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 top surface of the box cover, and the sealing surface is arranged on the peripheral side of the top of the vacuumizing opening in a surrounding manner; the vacuum air valve is arranged in the vacuumizing opening; the top of the vacuum air valve abuts against the sealing face. The box cover comprises an injection ring, and the injection ring is in an annular shape and is arranged on the peripheral side wall of the vacuumizing opening in a circumferential surrounding mode. When the box cover is subjected to injection molding, injection molding melt can enter the peripheral area of the vacuumizing opening through the injection ring and is injected into the box cover, so that the box cover is formed. After injection molding is finished and the box cover is cooled, the flatness of the sealing face can be ensured, the smoothness of the sealing face can be improved, the sealing performance of the formed box cover can be improved, and the overall sealing performance of the vacuum preservation box can be 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 relevant refrigeration equipment, a vacuum fresh-keeping box is provided on the door, which includes a box body, a box lid and a vacuum air valve. The box lid is provided on the top of the box body, and a vacuum port is usually provided on the box lid, which is used to evacuate the inside of the box body. The vacuum air valve is provided at the vacuum port, and the vacuum air valve is used to seal the vacuum port. The box lid of an existing vacuum fresh-keeping box is usually injection molded. When the injection molding melt converges at the vacuum port, it usually flows from one side of the vacuum port to the other side, and convergence marks are easily generated at the convergence point on the other side, resulting in an uneven top surface area of ​​the box lid around the vacuum port, which affects the sealing performance of the vacuum air valve when sealing the vacuum port. 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 improve the sealing performance 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 preservation box, which includes: a box body with an open top, and a storage cavity formed in the box body; a box lid that is detachably covered on the top of the box body to seal the storage cavity; a vacuum port, which is opened on the box lid and passes through the box lid up and down; a sealing surface is provided on the top surface of the box lid, and the sealing surface is arranged around the top of the vacuum port; a vacuum air valve is provided in the vacuum port; the top of the vacuum air valve protrudes out of the top of the vacuum port and abuts against the sealing surface to seal the vacuum port; wherein the box lid includes: an injection ring formed on the peripheral side wall of the vacuum port, the injection ring is annular and circumferentially arranged on the peripheral side wall of the vacuum port; the injection ring is configured so that when the box lid is injection molded, the injection melt can enter the peripheral area of ​​the vacuum port through the injection ring and be injected into the box lid to form the box lid.

[0008] The technical scheme has the following advantages or beneficial effects: in the process of injection molding of the box cover, the injection melt can enter the peripheral side area of the vacuum extraction port through the injection ring and other areas in the box cover, and then the entire box cover can be integrally formed. For example, in the injection mold of the box cover, the injection inlet of the injection material can be communicated with the injection ring, and then the injection melt formed by heating the injection material can uniformly enter the peripheral side area of the vacuum extraction port through the injection ring, and then continuously flow to other areas of the box cover from the peripheral side area of the vacuum extraction port. During the continuous injection of the injection melt by the injection ring, the position corresponding to the sealing surface can remain flat without air bubble residue.

[0009] After the injection is completed and the box cover is cooled, the flatness of the sealing surface can be ensured, which is beneficial to improve the smoothness of the sealing surface, and then beneficial to improve the sealing performance of the formed box cover and the overall sealing performance of the vacuum preservation box.

[0010] In some embodiments of the present application, the box cover comprises an injection column arranged inside the vacuum extraction port, the injection column is columnar and extends upward and downward, the outer peripheral wall of the top end of the injection column is connected with the injection ring, and the bottom end of the injection column is a feeding end. During the injection molding of the box cover, the injection melt can enter the injection column through the feeding end and then enter the peripheral side area of the vacuum extraction port through the injection ring.

[0011] The technical scheme has the following advantages or beneficial effects: in the process of injection molding of the box cover, the injection melt can move from the bottom of the injection column to the top of the injection column, and the injection melt needs to overcome gravity when rising, so that the injection melt rises uniformly and continuously through the injection ring into the peripheral side area of the vacuum extraction port, which is beneficial to improve the flatness and smoothness of the sealing surface, and then beneficial to improve the sealing performance of the formed box cover and the overall sealing performance of the vacuum preservation box.

[0012] In some embodiments of the present application, after the box cover is formed, the injection column can be separated from the peripheral wall of the vacuum extraction port at the injection ring under the action of external force.

[0013] The technical scheme has the following advantages or beneficial effects: by pressing with fingers or inserting a columnar tool into the vacuum extraction port, the injection column can be separated from the peripheral wall of the vacuum extraction port at the injection ring, and then the vacuum extraction port can be opened, and punching can be avoided, which is beneficial to reduce the processing cost.

[0014] In some embodiments of the present application, the size of the injection ring in the height direction of the vacuum extraction port is in the range of 0.3mm-0.8mm.

[0015] The above technical solution has the following advantages or beneficial effects: by setting the injection ring size height within the range of 0.3mm-0.8mm, it can ensure that the injection column can be easily separated from the surrounding side wall of the vacuum port at the injection ring; and it can also ensure the injection speed of the injection melt at the injection ring to improve the injection molding efficiency of the box cover.

[0016] In some embodiments of the present application, the dimension of the injection ring in the height direction of the vacuum port is 0.5 mm.

[0017] The above technical solution has the following advantages or beneficial effects: by setting the injection ring height at 0.5 mm, the injection ring size is made more reasonable to ensure that the injection column is easily separated from the peripheral side wall of the vacuum port, and to ensure the injection speed of the injection melt at the injection ring.

[0018] 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.

[0019] The above technical solution has the following advantages or beneficial effects: by designing an injection ring at the vacuum port of the box cover, it is beneficial to improve the sealing of the molded box cover, and to improve the overall sealing of the vacuum preservation box, thereby improving the product performance of the refrigeration equipment.

[0020] 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.

[0021] 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.

[0022] 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 vacuum port, and the vacuum pump can vacuum the storage cavity through the vacuum pump pipeline, the vacuum pump connector and the vacuum port.

[0023] 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.

[0024] 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; when the vacuum joint is flipped over, the vacuum joint can be sealed against the positioning ring to enable the vacuum joint to dock with the vacuum port.

[0025] 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.

[0026] 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 forms the bottom surface of the sealing groove; and the positioning ring is arranged around the circumference of the sealing groove.

[0027] 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.

[0028] Details of other embodiments are included in the detailed description and accompanying drawings.

[0029] 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

[0030] Figure 1 It is a structural schematic diagram of refrigeration equipment in some embodiments of the present utility model.

[0031] Figure 2 yes Figure 1 Schematic diagram of the middle box door structure.

[0032] Figure 3 yes Figure 2 The schematic diagram of the structure of the box door in another state is shown.

[0033] Figure 4 yes Figure 3 The structural diagram of the vacuum preservation box shown.

[0034] Figure 5 yes Figure 4 A schematic diagram of the decomposition structure.

[0035] Figure 6 yes Figure 5 Schematic diagram of the structure of the middle box cover.

[0036] Figure 7 yes Figure 6 A schematic diagram of the decomposition structure.

[0037] Figure 8 yes Figure 7 Schematic diagram of the local enlarged structure.

[0038] Figure 9 yes Figure 4 A cross-sectional view of the vacuum container shown in FIG.

[0039] Figure 10 yes Figure 9 Schematic diagram of the local enlarged structure.

[0040] Figure 11 yes Figure 3 A cross-sectional view of the layout is shown.

[0041] Figure 12 yes Figure 11 Schematic diagram of the local enlarged structure.

[0042] Figure 13 yes Figure 7 A cross-sectional view of the box cover is shown.

[0043] Figure 14 yes Figure 13 Schematic diagram of the local enlarged structure.

[0044] Figure 15 yes Figure 13 The diagram shows a structural diagram of the box cover during the molding process.

[0045] Figure 16 yes Figure 15 Schematic diagram of the local enlarged structure.

[0046] The accompanying drawings are marked as follows: 1. Box body; 2. Box door; 21. Door shell; 22. Door liner; 221. liner rib; 23. Door shelf; 3. Vacuum preservation box; 31. Box body; 310. Storage cavity; 32. Box cover; 321. Vacuum port; 3211. Injection ring; 322. Sealing surface; 323. Stop rib; 3231. Stop part; 3232. Vent groove; 324. Reinforcement rib; 325. Positioning ring; 326. Sealing groove; 327. Injection column; 3271. Conical part; 3272. Columnar part; 33. Sealing ring; 34. Vacuum air valve; 341. Column part; 342. Sealing part; 343. Abutment part; 4. Vacuum joint; 41. Sealing ring. DETAILED DESCRIPTION

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] Figure 1 It is a structural schematic diagram of refrigeration equipment in some embodiments of the present utility model.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle box door 2.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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 .

[0072] 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.

[0073] Figure 3 yes Figure 2 The structure diagram of the door 2 shown is in another state.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] Figure 4 yes Figure 3 The structural diagram of the vacuum preservation box 3 is shown.

[0083] like Figure 3 and Figure 4As 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.

[0084] Figure 5 yes Figure 4 A schematic diagram of the decomposition structure.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] like Figure 5 、 Figure 6 and Figure 7As 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.

[0090] 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.

[0091] Figure 8 yes Figure 7 Schematic diagram of the local enlarged structure. Figure 9 yes Figure 4 sectional view of the vacuum preservation box 3 shown in FIG. Figure 10 yes Figure 9 Schematic diagram of the local enlarged structure.

[0092] like Figure 8 、 Figure 9 and Figure 10 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 321. The vacuum air valve 34 may be used to seal the vacuum port 321, thereby sealing the storage cavity 310 inside the vacuum preservation box 3.

[0093] 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 321. The outer diameter of the column portion 341 may be smaller than the inner diameter of the vacuum port 321, 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 321. When the vacuum joint 4 vacuums the vacuum port 321, 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.

[0094] like Figure 10As 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 322 may be formed on the top surface of the box cover 32. The sealing surface 322 may be arranged around the circumferential side of the top opening of the vacuum port 321. The sealing portion 342 may protrude from the top of the vacuum port 321. The sealing portion 342 may be provided above the sealing surface 322. The sealing portion 342 may be used to abut against the sealing surface 322 to achieve sealing of the vacuum port 321, thereby sealing the storage cavity 310 inside the vacuum preservation box 3.

[0095] Figure 11 yes Figure 3 A cross-sectional view of the layout is shown. Figure 12 yes Figure 11 Schematic diagram of the local enlarged structure.

[0096] like Figure 12 As 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.

[0097] 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.

[0098] 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.

[0099] like Figure 10 and Figure 12As 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.

[0100] 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.

[0101] 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 .

[0102] like Figure 8 and Figure 10 As 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.

[0103] 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.

[0104] 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.

[0105] 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 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] like Figure 11 and Figure 12As shown, in some embodiments, a sealing ring 41 can be provided on the vacuuming joint 4. The sealing ring 41 can be made of a flexible material. The sealing ring 41 can have a ring shape. When the vacuuming joint 4 is connected to the top of the vacuum preservation box 3, the sealing ring 41 can be sealed against the positioning ring 325, thereby ensuring the sealing of the connection between the vacuuming joint 4 and the vacuuming port 321, so that the air inside the vacuum preservation box 3 can be smoothly extracted.

[0111] Figure 13 is Figure 7 A sectional view of the box cover 32. Figure 14 is Figure 13 A partial enlarged structural schematic view of the box cover 32.

[0112] As shown in Figure 12 and Figure 14 In some embodiments, a sealing groove 326 can be concavely provided on the top surface of the box cover 32, and the sealing groove 326 can be circumferentially arranged on the side of the top opening of the vacuuming port 321. A sealing surface 322 can be formed on the groove bottom surface of the sealing groove 326. A sealing portion 342 can be arranged within the contour of the sealing groove 326. The positioning ring 325 can be circumferentially arranged on the side of the sealing groove 326. In this way, by arranging the sealing portion 342 within the sealing groove 326, the height of the vacuum air valve 34 can be reduced, so that the vacuum air valve 34 does not protrude above the top surface of the positioning ring 325, thereby facilitating the reduction of the height requirement of the positioning ring 325.

[0113] Figure 15 is Figure 13 A structural schematic view of the box cover 32 during the molding process. Figure 14 is Figure 13 A partial enlarged structural schematic view of the box cover 32.

[0114] As shown in Figure 15 and Figure 16 In some embodiments, the box cover 32 can be integrally injection molded. The box cover 32 can be made by injection molding.

[0115] As shown in Figure 14 and Figure 16 In some embodiments, the box cover 32 can include an injection ring 3211. The injection ring 3211 can be formed on the circumferential wall of the vacuuming port 321. The injection ring 3211 can have a ring structure. The injection ring 3211 can be circumferentially and annularly arranged on the circumferential wall of the vacuuming port 321.

[0116] During the injection molding process of the box cover 32, the injection melt can enter the surrounding area of ​​the vacuum port 321 through the injection ring 3211 and be injected into other areas of the box cover 32, thereby integrally forming the entire box cover 32. Specifically, in the injection mold of the box cover 32, the injection port of the injection molding material can be connected to the injection ring 3211, thereby allowing the injection melt formed by heating the injection molding material to evenly enter the surrounding area of ​​the vacuum port 321 through the injection ring 3211, and then continuously flow from the surrounding area of ​​the vacuum port 321 to other areas of the box cover 32. During the process of the injection melt being continuously injected by the injection ring 3211, the position corresponding to the sealing surface 322 can remain flat without any bubbles remaining.

[0117] After the injection molding is completed and the lid 32 cools, the flatness of the sealing surface 322 can be ensured, which is conducive to improving the smoothness of the sealing surface 322. When the vacuum air valve 34 is installed at the vacuum port 321, it can ensure that the sealing surface 322 and the sealing portion 342 of the vacuum air valve 34 are in close contact, which is conducive to improving the sealing performance of the sealing portion 342 of the vacuum air valve 34, thereby improving the sealing performance of the molded lid 32 and the overall sealing performance of the vacuum storage container 3.

[0118] It should be noted that in the injection molding schemes of the relevant box lid 32 on the market, the injection ports of the injection molding raw materials are usually arranged at intervals on one side of the vacuum port 321. Therefore, during the injection molding process of the box lid 32, when the injection molding melt of the injection molding raw material enters the interior of the box lid 32 through the injection port, it will first enter the area on one side of the vacuum port 321, and then flow along the peripheral side wall of the vacuum port 321 to the area on the other side of the vacuum port 321. In this way, the injection molding melt will converge at the area on the other side of the vacuum port 321, and injection molding marks will be formed at the convergence point, which may easily lead to the formation of corresponding trace lines or trace grooves on the sealing surface 322 of the box lid 32 after molding, so that the flatness and smoothness of the sealing surface 322 do not meet the requirements, which may easily affect the sealing performance of the box lid 32 and the sealing performance of the vacuum preservation box 3 as a whole.

[0119] like Figure 14 and Figure 16 As shown, in some embodiments, the box cover 32 may include an injection molding column 327. The injection molding column 327 may be disposed inside the vacuum port 321. The injection molding column 327 is cylindrical and extends vertically. The outer peripheral wall of the top end of the injection molding column 327 may be connected to the injection ring 3211. The bottom end of the injection molding column 327 may be a feed end.

[0120] During the injection molding process of the box cover 32, the injection melt can enter the injection column 327 through the feed end at the bottom of the injection column 327, and then enter the surrounding area of ​​the vacuum port 321 from the top of the injection column 327 through the injection ring 3211, and then continue to flow from the surrounding area of ​​the vacuum port 321 to other areas of the box cover 32.

[0121] In this way, during the injection molding process of the box cover 32, the injection melt can move from the bottom of the injection column 327 to the top thereof. When the injection melt rises, it needs to overcome gravity so that the injection melt rises evenly, and then can evenly and continuously pass through the injection ring 3211 into the surrounding area of ​​the vacuum port 321, which is beneficial to improving the flatness and smoothness of the sealing surface 322, and thus is beneficial to improving the sealing of the molded box cover 32, as well as improving the overall sealing of the vacuum preservation box 3.

[0122] In some embodiments, the bottom end of the injection molding column 327 may be provided with an inlet (not shown). The inlet may serve as the feed end of the injection molding column 327. The injection molding melt may enter the injection molding column 327 through the inlet to reduce the injection speed of the injection molding melt. The injection molding melt entering the injection molding column 327 may rise evenly along the injection molding column 327.

[0123] It should be noted that the size of the feed opening can be smaller than the outer diameter of the bottom surface of the injection column 327. The size of the feed opening can be adjusted as needed and is not limited here.

[0124] like Figure 16 As shown, in some embodiments, the injection column 327 may include a tapered portion 3271. The tapered portion 3271 may have a conical structure. The outer diameter of the top end of the tapered portion 3271 may be greater than the outer diameter of the bottom end of the tapered portion 3271. The outer peripheral wall of the top end of the tapered portion 3271 may be connected to the injection ring 3211. The injection melt entering the injection column 327 may rise along the tapered portion 3271 to gradually reduce the flow rate of the injection melt, and then be able to evenly and continuously pass through the injection ring 3211 into the peripheral area of ​​the vacuum port 321, which is conducive to improving the uniformity of injection molding.

[0125] In some embodiments, the injection molding column 327 may include a cylindrical portion 3272. The cylindrical portion 3272 may be a cylindrical structure. A tapered portion 3271 may be disposed above the cylindrical portion 3272. The bottom end of the tapered portion 3271 may be connected to the top end of the cylindrical portion 3272. The bottom end of the cylindrical portion 3272 may form an inlet port. The injection molding melt entering the injection molding column 327 through the inlet port may rise evenly along the cylindrical portion 3272.

[0126] like Figure 14 and Figure 16As shown, in some embodiments, after the box cover 32 is formed, the injection column 327 can be separated from the surrounding side walls of the vacuum port 321 at the injection ring 3211 under the action of an external force. For example, by pressing with a finger or inserting a cylindrical tool into the vacuum port 321, the injection column 327 can be separated from the surrounding side walls of the vacuum port 321 at the injection ring 3211, thereby opening the vacuum port 321. This eliminates the need for drilling and helps reduce processing costs.

[0127] It should be noted that after separation, traces of the injection ring 3211 may remain on the sidewalls surrounding the vacuum port 321. These traces of the injection ring 3211 may also remain on the sidewalls surrounding the vacuum port 321 without undergoing machining. Since these traces of the injection ring 3211 are located away from the sealing surface 322, they do not affect the sealing performance of the sealing surface 322, and thus, the overall sealing performance of the vacuum container 3. Of course, these traces of the injection ring 3211 can be removed through machining and polishing.

[0128] In some embodiments, the injection ring 3211 can be smaller than 0.8 mm in height relative to the vacuum port 321. By making the injection ring 3211 smaller than 0.8 mm, the connection strength between the injection column 327 and the sidewall of the vacuum port 321 can be reduced. Consequently, with minimal external force, the injection column 327 can be easily separated from the sidewall of the vacuum port 321 at the injection ring 3211, eliminating the need for drilling.

[0129] In some embodiments, the injection ring 3211 may have a dimension greater than 0.3 mm in the height direction of the vacuum port 321. By having the injection ring 3211 dimension greater than 0.3 mm, the injection ring 3211 can have a sufficient opening width, thereby ensuring the injection speed of the injection melt and improving the injection efficiency of the box cover 32.

[0130] In some embodiments, the injection ring 3211 can have a height dimension in the range of 0.3 mm to 0.8 mm in the direction of the vacuum port 321. By keeping the injection ring 3211 height dimension in the range of 0.3 mm to 0.8 mm, the injection column 327 can be easily separated from the sidewall of the vacuum port 321 at the injection ring 3211, while also ensuring a high injection speed for the injection melt at the injection ring 3211, thereby improving the injection efficiency of the box cover 32.

[0131] In some embodiments, the injection ring 3211 may be 0.5 mm in height from the vacuum port 321. By keeping the injection ring 3211 at 0.5 mm, the size of the injection ring 3211 can be more reasonable, ensuring that the injection column 327 can be easily separated from the peripheral sidewall of the vacuum port 321 and that the injection speed of the injection melt at the injection ring 3211 is maintained.

[0132] 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 provided in the vacuum port; The top of the vacuum air valve protrudes from the top of the vacuum port and abuts against the sealing surface to seal the vacuum port; Wherein, the box cover comprises: An injection ring is formed on the peripheral side wall of the vacuum port, and the injection ring is annular and circumferentially arranged on the peripheral side wall of the vacuum port; The injection ring is configured as follows: During the injection molding of the box cover, the injection melt can enter the peripheral area of ​​the vacuum port through the injection ring and be injected into the box cover to form the box cover.

2. The vacuum fresh-keeping container according to claim 1, wherein: The box cover comprises: An injection molding column is provided inside the vacuum port, and the injection molding column is columnar and extends up and down; The outer peripheral wall of the top end of the injection molding column is connected to the injection ring, and the bottom end of the injection molding column is the feeding end; During the injection molding of the box cover, the injection melt can enter the injection column through the feed end and then enter the peripheral area of ​​the vacuum port through the injection ring.

3. The vacuum fresh-keeping container according to claim 2, wherein: After the box cover is formed, the injection column can be separated from the peripheral side wall of the vacuum port at the injection ring under the action of external force.

4. The vacuum fresh-keeping container according to claim 2, wherein: The dimension of the injection ring in the height direction of the vacuum port is in the range of 0.3 mm to 0.8 mm.

5. The vacuum fresh-keeping container according to claim 4, wherein: The dimension of the injection ring in the height direction of the vacuum port is 0.5 mm.

6. 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.

7. The refrigeration equipment according to claim 6, 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.

8. The refrigeration equipment according to claim 6, 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 vacuum port, and the vacuum pump can vacuum the storage cavity through the vacuum pipeline, the vacuum joint and the vacuum port.

9. The refrigeration equipment according to claim 8, characterized in that 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 sealing surface; When the vacuum joint is turned over, the vacuum joint can be sealed against the positioning ring, so that the vacuum joint is connected to the vacuum port.

10. The refrigeration equipment according to claim 9, characterized in that 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 forms the bottom surface of the sealing groove; The positioning ring is arranged around the circumference of the sealing groove.

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