Refrigerator

Abstract

The application provides a refrigerator. The refrigerator comprises a cabinet and a vacuum packaging structure. The outer shell is provided with a first mounting cavity, the inner container is provided with a second mounting cavity, and the first mounting cavity and the second mounting cavity are communicated. The vacuum packaging structure comprises a first support, a second support and a vacuumizing assembly, the first support, the second support and the vacuumizing assembly are installed in the first mounting cavity, the first support and the second support are relatively movable to form a vacuumizing cavity, the vacuumizing assembly is communicated with the vacuumizing cavity, and the vacuumizing assembly is used for vacuumizing or depressurizing the vacuumizing cavity. The second support is provided with a heat preservation door close to one side of the inner container, the heat preservation door is detachably installed at the opening of the second mounting cavity, the second support can be detached from the second mounting cavity through the heat preservation door, and the heat preservation door is provided with a handle which is rotatably connected. A locking structure is used for locking the heat preservation door on the inner container, and the handle is rotated to drive the locking structure to unlock or lock the heat preservation door. The above-mentioned refrigerator can conveniently clean the food residues spilled on the second support for the user.

Description

Technical Field

[0001] This invention relates to a household appliance, and more particularly to a refrigerator. Background Technology

[0002] A refrigerator is a device that maintains low temperatures to prevent food or other items from spoiling. As people's living standards improve, their demand for food preservation is also increasing.

[0003] Vacuum preservation technology has been applied to refrigerators to address the issue of food preservation. Currently, refrigerators use vacuum drawers to create a vacuum zone within the cabinet, preserving the food within that zone. However, due to the space limitations of the vacuum drawer, users typically need to place all the food requiring vacuum preservation into it before vacuuming to create a relative vacuum. Then, when a specific food item needs to be used, the drawer must be opened, breaking the vacuum. If continued vacuum preservation is required, the process must be repeated, wasting resources. Therefore, traditional refrigerators using vacuum drawers for vacuum preservation have low efficiency, hindering the widespread adoption of this technology. Summary of the Invention

[0004] This invention provides a refrigerator that can increase the vacuum preservation space and improve the vacuum preservation efficiency.

[0005] A refrigerator, comprising:

[0006] The box has an interior that forms a low-temperature storage space. The box includes an outer shell and an inner liner. The outer shell has a first mounting cavity, and the inner liner has a second mounting cavity. The first mounting cavity and the second mounting cavity are in communication.

[0007] A vacuum sealing structure includes: a first support, a second support, and a vacuum pumping assembly. The first support, the second support, and the vacuum pumping assembly are installed in a first mounting cavity. The first support and the second support are movable relative to each other to form a vacuum pumping cavity. The vacuum pumping assembly is connected to the vacuum pumping cavity and is used to evacuate or depressurize the vacuum pumping cavity.

[0008] The second support is provided with a heat-insulating door on the side near the inner liner. The heat-insulating door is detachably installed at the opening of the second mounting cavity. The second support can be detached from the second mounting cavity through the heat-insulating door. The heat-insulating door is provided with a rotatably connected handle. The vacuum sealing structure also includes a locking structure. The locking structure is used to lock the heat-insulating door to the inner liner. The handle is rotated to drive the locking structure to unlock or lock the heat-insulating door.

[0009] In one embodiment, the locking structure includes a first engaging portion disposed on the handle and a second engaging portion disposed on the inner liner; the first engaging portion and the second engaging portion can be engaged and connected in a limiting manner, and the rotation of the handle causes the first engaging portion to switch between a first position and a second position. When the first engaging portion is in the first position, it can cooperate with the second engaging portion to lock and position the heat preservation door; when the first engaging portion is in the second position, it can disengage from the second engaging portion to unlock and detach the heat preservation door.

[0010] In one embodiment, the locking structure includes an elastic element, which is positioned between the handle and the insulated door. When the handle is rotated to the second position, the elastic element undergoes elastic deformation, unlocking the first engaging portion and the second engaging portion. The insulated door can then be detached from the inner liner. When the elastic element returns to its elastic deformation, the handle returns to the first position, locking the insulated door.

[0011] In one embodiment, the elastic element includes a spiral tube, a first arm, and a second arm. The first arm is mounted on the handle, and the second arm is positioned and abuts against the insulated door. When the handle rotates, the first arm and the second arm move relative to each other.

[0012] In one embodiment, the handle has lugs at both ends, and the insulated door has through holes at both ends. The lugs pass through the through holes to enter the insulated door, and the lugs have guide grooves for installing the first arm.

[0013] In one embodiment, the guide groove is elongated, the handle rotates to drive the first arm to rotate, and the first arm moves along the guide groove.

[0014] In one embodiment, the handle is located on the outside of the heat-insulating door, and the two ends of the handle are provided with connecting arms. The connecting arms are provided with first shaft holes, the heat-insulating door is located between the two connecting arms, and the two sides of the heat-insulating door are provided with second shaft holes. The first shaft holes and the second shaft holes are rotatably connected by a rotating shaft.

[0015] In one embodiment, the rotating shaft is connected through two first shaft holes and two second shaft holes.

[0016] In one embodiment, a fixing seat is further included, which is fixedly disposed on the inner liner. The fixing seat has a disassembly port, which is opposite to the opening of the second mounting cavity and communicates with the second mounting cavity.

[0017] In one embodiment, when the locking structure locks the insulated door, the outer side of the insulated door facing the low-temperature storage space is flush with the outer side of the handle facing the low-temperature storage space.

[0018] The refrigerator described above is equipped with a vacuum sealing structure, which can vacuum-seal and seal packaging bags, thus enabling independent vacuum packaging of various foods. Therefore, vacuum-sealed foods maintain their freshness well in the refrigerator, and multiple vacuuming processes are avoided. Consequently, compared to traditional refrigerators, the vacuum preservation space of this refrigerator is not limited to the size of the vacuum drawer, expanding the range of vacuum preservation and improving its efficiency.

[0019] Furthermore, in the aforementioned vacuum sealing structure, the second support can be detached from the door; this makes it convenient for users to clean up food residue spilled during the vacuuming process, resulting in a better user experience and improving the refrigerator's level of intelligence.

[0020] Furthermore, the second support can be locked and unlocked via a locking mechanism. The locking and unlocking of the second support is achieved by rotating a handle, making operation convenient and providing a superior user experience. Attached Figure Description

[0021] Figure 1 This is a perspective view of the refrigerator according to this embodiment;

[0022] Figure 2 for Figure 1 The exploded view of the refrigerator door shown;

[0023] Figure 3 for Figure 2 An exploded view of the door from another angle;

[0024] Figure 4 for Figure 2 The sectional view of the door shown;

[0025] Figure 5 for Figure 4 A cross-sectional view of another state of the door shown;

[0026] Figure 6 for Figure 3 An exploded view of the insulated door shown.

[0027] Figure 7 for Figure 6 The exploded view of the second support and the insulated door shown;

[0028] Figure 8 for Figure 7 An exploded view of the second support and the insulated door from another angle;

[0029] Figure 9 for Figure 7 A three-dimensional view of the panel from another angle;

[0030] Figure 10 for Figure 8 A cross-sectional view showing the connection state between the panel and the handle.

[0031] Figure 11 for Figure 10 A cross-sectional view of the panel and handle when they rotate relative to each other;

[0032] Figure 12 for Figure 7 A three-dimensional view of the elastic element shown;

[0033] Figure 13 for Figure 7 A three-dimensional view of the handle from another angle;

[0034] Figure 14 for Figure 5 The diagram shows the process of removing the insulated door and the second support from the door body;

[0035] Figure 15 for Figure 14 The diagram shows the assembly process of the insulated door and the second support.

[0036] Figure 16 for Figure 14 The diagram shows the assembled structure of the insulated door and the second support.

[0037] The labels on the attached diagram are explained as follows: 1. Refrigerator;

[0038] 2. Housing; 22. Door; 221. First mounting cavity; 222. Insertion port; 23. Outer shell; 24. Inner liner; 241. Second mounting cavity;

[0039] 3. Vacuum sealing structure; 31. First support; 311. First cavity; 312. First sealing ring; 314. Stop rib; 32. Second support; 321. Second cavity; 322. Second sealing ring;

[0040] 33. Mounting base; 330. Connecting ear;

[0041] 34. Insulated door; Insulation layer 340; 341. Base plate; 342. Panel; 343. Buckle; 344. Slot; 345. Handle; 3451. Connecting arm; 3452. First shaft hole; 3421. Second shaft hole; 3454. Lug; 3456. Guide groove; 346. Rotating shaft; 347. Clearance groove; 348. Through hole; 349. 3459. Reinforcing rib;

[0042] 35. Vacuum assembly; 351. Vacuum pump; 352. Pressure detection device; 353. Pressure relief device;

[0043] 36. Vacuum chamber;

[0044] 37. Locking structure; 371. First engaging part; 372. Second engaging part; 373. Fixing base; 3730. Removal port; 3731. Fixing piece; 3732. Door seal; 3711. First holding surface; 374. Elastic element; 3741. Spiral tube; 3742. First arm; 3743. Second arm; 3744. Bending part;

[0045] 38. Encapsulated components;

[0046] 4. Sealing plate; 80. Packaging bag; 9. Screws. Detailed Implementation

[0047] Typical embodiments embodying 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 can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations herein are for illustrative purposes only and not intended to limit the present invention.

[0048] When using a vacuum packaging machine to package food, for foods containing moisture or broth, some liquid will inevitably seep into the lower cover of the machine during the vacuum process. This liquid will be collected in the receiving cavity of the lower cover. This liquid needs to be cleaned promptly to prevent spoilage or mold growth, which would make the packaging machine unsanitary.

[0049] The same problems exist for refrigerators using vacuum packaging machines. Furthermore, in the vacuum sealing structure of a refrigerator, when the upper and lower covers move vertically, the limited space on top restricts the separation distance between them, making the lower cover difficult to clean. To address this issue, a new door layout has been developed to facilitate the installation and cleaning of the vacuum packaging machine.

[0050] This application provides a refrigerator. The refrigerator can be a double-door, multi-door, French-door, or French-door refrigerator, etc. The type of refrigerator is not limited here.

[0051] Please see Figure 1The interior of the cabinet 1 forms a low-temperature storage space. The refrigerator 1 includes a cabinet 2. The cabinet 2 is generally rectangular. The cabinet 2 includes a door 22 and a storage compartment for storing food. One side of the storage compartment is open. The door 22 has an opening for the storage compartment and can close it. The interior of the storage compartment forms the storage space of the refrigerator 1. The interior of the cabinet 2 can be divided into multiple independent functional spaces according to different uses, including a refrigerator compartment, a freezer compartment, a quick-freeze compartment, and a defrost compartment, etc.

[0052] For the arrangement of multiple functional spaces, the refrigerator compartment is typically located at the top of cabinet 2, and the freezer compartment is located at the bottom of cabinet 2. It is understandable that for other types of refrigerators, the distribution of each space on cabinet 2 can be in other ways; this is not limited here.

[0053] Each functional space can be separated by an independent door 22 to seal off that functional space. Alternatively, multiple functional spaces can share a single door 22 to seal off all of them simultaneously. The correspondence between the door 22 and the functional spaces is not limited here.

[0054] The door body 22 includes an outer shell 23, an inner liner 24, and an insulation layer disposed between the outer shell 23 and the inner liner 24. The insulation layer may be filled with foam material. The outer shell 23 has a first mounting cavity 221. The inner liner 24 has a second mounting cavity 241, and the first mounting cavity 221 and the second mounting cavity 241 are in communication.

[0055] Please see Figure 2 and Figure 3 The refrigerator 11 of this embodiment also includes a vacuum sealing structure 3 disposed on the cabinet 2. This vacuum sealing structure 3 can be disposed on the inner or outer wall of the door 22 of the cabinet 2, or on the inner or outer wall of the storage compartment. To meet the usage habits of most users, the vacuum sealing structure 3 is disposed on the outer wall of the door 22 of the cabinet 2.

[0056] The vacuum sealing mechanism 3 is fixedly installed in the first mounting cavity 221 and the second mounting cavity 241 by screws 9, expansion screws, etc. Furthermore, the first mounting cavity 221 is located in the upper middle part of the door 22, thus the vacuum sealing structure 3 is located in the middle of the refrigerator 1. Users can directly face the vacuum sealing structure, and the operating height of the vacuum sealing structure 3 also meets ergonomic design requirements.

[0057] Furthermore, a sealing plate 4 is provided at the opening of the first mounting cavity 221 on the door body 22. The sealing plate 4 is used to cover the first mounting cavity 221. The sealing plate 4 has an insertion port 222 for inserting a packaging bag. The insertion port 222 communicates with the first mounting cavity 221. The insertion port 222 is located on the door body 22 for user convenience and easy operation.

[0058] Specifically, in this embodiment, the sealing plate 4 can be a display and control board. The vacuum packaging structure 3 is electrically connected to the display and control board. On one hand, the display and control board 4 can display the working status of the vacuum packaging structure 3. On the other hand, the working process of the vacuum packaging structure 3 can also be controlled by touching or pressing the display and control board 4.

[0059] The vacuum sealing structure 3 includes a first support 31, a second support 32, a mounting base 33, a vacuum pumping component 35, and a sealing component 38.

[0060] The first support 31 and the second support 32 form the main frame structure of the vacuum sealing structure 3. The first support 31 and the second support 32 can move towards or away from each other to clamp and separate the packaging bag 80.

[0061] Please see Figure 3 Specifically, the first support 31 and the second support 32 move toward each other to clamp the packaging bag 80. After the vacuum sealing structure 3 has completed the vacuuming and sealing of the packaging bag 80, the first support 31 and the second support 32 can separate from each other, allowing the packaging bag 80 to be removed from the vacuum sealing structure 3, thus completing the vacuum sealing.

[0062] The movement relationship between the first support 31 and the second support 32 can be as follows: the first support 31 moves toward or away from the second support 32; or the second support 32 moves toward or away from the first support 31; or both the first support 31 and the second support 32 move toward or away from each other. The movement mode between the first support 31 and the second support 32 is not limited here, as long as they can move closer to each other and separate from each other. Furthermore, the first support 31 and the second support 32 can be driven manually, electrically, or pneumatically. The vacuum sealing structure 3 of this embodiment includes a driving device. This driving device can control the automatic lifting and lowering movement of the first support 31 and / or the second support 32 to achieve automatic vacuum sealing, improving the automation performance of the refrigerator 1.

[0063] The placement of the first support 31 and the second support 32 can be determined based on user habits and the spatial division of the refrigerator 1's door 22. The first support 31 and the second support 32 can be positioned vertically opposite each other on the door 22; alternatively, they can be positioned horizontally opposite each other on the door 22; and even, both can be tilted onto the door 22. Here, "vertical," "left," and "right" refer to the orientation of the refrigerator 1 when it is upright and placed vertically, directly facing the refrigerator.

[0064] Please see Figure 4Specifically, in this embodiment, the first support 31 is positioned above the second support 32. Furthermore, the first support 31 moves downward relative to the second support 32, causing the first support 31 and the second support 32 to engage with each other. This vertical arrangement of the first support 31 and the second support 32 better suits user habits. The first support 31 presses down on the packaging bag 80 on the second support 32, making it easier for the user to hold the left and right ends of the packaging bag 80 and preventing the food inside the packaging bag 80 from tipping over.

[0065] Specifically, in this embodiment, the first support 31 and the second support 32 can move relative to each other to form a vacuum chamber 36. The first support 31 has a first cavity 311, and the second support 32 has a second cavity 322. The shapes of the first support 31 and the second support 32 are adapted to each other. When the first support 31 and the second support 32 move towards each other and dock with each other, the first cavity 311 and the second cavity 322 form a sealed vacuum chamber 36.

[0066] A stop rib 314 is provided in either the first cavity 311 or the second cavity 321 to prevent the packaging bag 80 inserted into the vacuum chamber 36 from extending beyond the vacuum chamber 36. Specifically, the stop rib 314 is located within the first cavity 311, and its height is greater than the depth of the first cavity 311. When the user inserts the packaging bag 80 into the vacuum chamber 36, the stop rib 314 prevents the bag from being inserted further. Furthermore, a gap exists between the stop rib 314 and the bottom of the second cavity 322 to allow for unobstructed airflow.

[0067] In other embodiments, the vacuum chamber 36 may also be equipped with a positioning detection device. Specifically, a microwave sensor or an infrared sensor may be used to detect whether a packaging bag has been inserted into the vacuum chamber 36, send a signal indicating whether the packaging bag is in position, and control the vacuuming operation.

[0068] Specifically, the first support 31 has a first sealing groove on the outer periphery of the first cavity 311, and a first sealing ring 312 is provided in the first sealing groove. The second support 32 has a second sealing groove on the outer periphery of the second cavity 322. A second sealing ring 322 is also provided in the second sealing groove. The first support 31 and the second support 32 are connected in a sealed manner through the first sealing ring 312 and the second sealing ring 322, thereby improving the sealing performance of the vacuum chamber 36.

[0069] The insertion port 222 is connected to the vacuum chamber 36, allowing the packaging bag 80 to enter the vacuum chamber 36 through the insertion port 222. Alternatively, the packaging bag 80 can directly enter the vacuum chamber 36 from the outside of the door 22. The opening of the packaging bag 80 is located inside the vacuum chamber 36, and the internal space of the packaging bag 80 communicates with the vacuum chamber 36 through the opening, forming a complete sealed chamber. When the user wants to vacuum seal the packaging bag 80, they can simply insert the packaging bag into the insertion port 222 located on the outside of the box 2 for convenient operation.

[0070] The vacuum assembly 35 is connected to the vacuum chamber 36 and is used to evacuate or depressurize the vacuum chamber 36. The vacuum assembly 35 is fixedly installed in the first mounting cavity 221 of the door body 22 via the mounting base 33. Specifically, in this embodiment, the mounting base 33 has a connecting ear 330 at its edge, through which the mounting base 33 is fixedly connected to the door body 22. The connecting ear 330 can be in the form of a snap-fit, a slot, or a screw hole.

[0071] Mounting base 33 is installed above the first support 31. In other embodiments, depending on the spatial layout of the door body 22, mounting base 33 can also be installed below the first support 31. Mounting base 33 is installed on the door body 22, and its shape is adapted to the shape of the door body 22. Mounting base 33 has a plate-like structure, and the installation direction of mounting base 33 is parallel to the direction of the door body 22. Then, the side of mounting base 33 parallel to the door body 22 is used to install the vacuum assembly.

[0072] Please see Figure 2 The mounting base 33 is used to support the vacuum pumping assembly 35. The vacuum pumping assembly 35 includes a vacuum pump 351, a pressure detection device 352, and a pressure relief device 353. The vacuum pump 351 is used to evacuate the vacuum chamber 36. The pressure detection device 352 is used to detect the pressure inside the vacuum chamber 36. The pressure relief device 353 is used to relieve pressure in the vacuum chamber 36. The mounting base 33 is provided with limiting ribs for mounting the vacuum pump 351, the pressure detection device 352, and the pressure relief device 353.

[0073] The mounting base 33 can be a one-piece injection-molded plate structure. The limiting ribs are also one-piece injection-molded. The vacuum assembly 35 is mounted on the mounting base 33 via the limiting ribs. The mounting base 33 has a simple structure, requiring no additional fasteners to assemble the vacuum assembly, making it easy to operate.

[0074] After vacuuming is completed, the sealing assembly 38 is used to seal the opening of the packaging bag 80. The sealing assembly 38 is installed inside the first support 31. The sealing assembly 38 is located on one side of the vacuum chamber 36 and corresponds to the sealing position of the packaging bag. When the sealing assembly 38 completes the sealing operation of the packaging bag 80, the driving device drives the first support 31 to move in the opposite direction, moving the first support 31 away from the second support 32, so that the packaging bag 80 can be removed from the vacuum sealing device 3.

[0075] During the vacuuming and sealing process of the packaging bag 80, dust and liquid may inevitably be sucked out or spilled from the packaging bag 80. The spilled dust and liquid will then accumulate in the second cavity 321 of the second support 32. For example... Figure 5 As shown, in order to facilitate cleaning of the second support 32, the second support 32 of the refrigerator in this embodiment is detachably mounted on the inner liner of the refrigerator body.

[0076] The second support 32 has a heat-insulating door 34 on the side near the inner liner 24. The heat-insulating door 34 is detachably installed at the opening of the second mounting cavity 241, and the second support 32 can be removed from the second mounting cavity 241 through the heat-insulating door 34. The inner liner 24 of the refrigerator body 2 has the function of heat preservation and insulation to ensure that the storage space of the refrigerator 1 maintains a low preservation temperature. Since the inner liner 24 has a second mounting cavity 241, and the heat-insulating door 34 has an insulation layer 340, the heat-insulating door 34 can cover the opening of the second mounting cavity 241 to ensure that the entire inner liner 24 of the refrigerator 1 can also maintain heat preservation at the position of the second mounting cavity 241. Therefore, the heat-insulating door 34 can maintain the heat preservation performance of the inner liner 24.

[0077] Please also refer to Figure 6 and Figure 7 Specifically, in this embodiment, the insulated door 34 includes a base plate 341 and a panel 342. The base plate 341 and the panel 342 are joined together to form a box, and the insulation layer 340 is filled inside the box, thus forming the insulated door 34. The base plate 341 is connected to the second support, and the panel 342 faces the inside of the box. Furthermore, the base plate 341 and the second support 32 can be an integral structure.

[0078] Please see Figure 8 and Figure 9 The base plate 341 and the panel 342 are provided with corresponding buckles 343 and slots 344 at their four edges. The buckles 343 and slots 344 cooperate with each other to engage and connect the base plate 341 and the panel 342. In other embodiments, the base plate 341 and the panel 342 can also be connected by bolts or threads.

[0079] Please see Figure 7The insulated door 34 is equipped with a rotatably connected handle 345. The handle 345 is located on the outside of the panel 342 and is rotatably connected to the panel 342. Specifically, the handle 345 is located on the outside of the insulated door 34, and connecting arms 3451 are provided at both ends of the handle 345. A first shaft hole 3452 is provided on the connecting arm 3451. The insulated door 34 is located between the two connecting arms 3451, and a second shaft hole 3421 is provided on both sides of the insulated door 34. The first shaft hole 3452 and the second shaft hole 3421 are rotatably connected by a rotating shaft 346.

[0080] Please see Figure 8 Furthermore, there is a single pivot 346, which connects the two first pivot holes 3452 and the two second pivot holes 3421. The single pivot 346 increases the connection strength between the handle 345 and the heat preservation door 34, and ensures the consistency of the rotation of the handle 345 relative to the heat preservation door 34.

[0081] Please see Figure 9 The side of the insulated door 34 facing the second mounting cavity 241 is provided with multiple reinforcing ribs 349. Each reinforcing rib 349 has a clearance groove 347 for accommodating and fixing the rotating shaft 346. This clearance groove 347 ensures the rotating shaft 346 is stably mounted on the insulated door 34, preventing deformation or movement of the rotating shaft 346 and reducing the reliability of the handle 345's rotation. Similarly, the side of the handle 345 facing the second mounting cavity 241 is provided with multiple reinforcing ribs 3459, which enhance the strength of the handle 345.

[0082] The vacuum sealing structure also includes a locking structure 37. The locking structure 37 is used to lock the heat preservation door 34 onto the inner liner 24, and the handle 345 is rotated to drive the locking structure 37 to unlock or lock the heat preservation door 34.

[0083] Please see Figure 13 and Figure 14 Specifically, in this embodiment, the locking structure 37 includes a first engaging portion 371 and a second engaging portion 372. The first engaging portion 371 and the second engaging portion 372 can be engaged and connected in a limiting manner. Specifically, the first engaging portion 371 is provided on the handle 345, and the second engaging portion 372 is provided on the inner liner 34. Rotation of the handle 345 causes the first engaging portion 371 to switch between a first position and a second position. When the first engaging portion 371 is in the first position, it can cooperate with the second engaging portion 372 to lock and position the heat preservation door 34. When the first engaging portion 371 is in the second position, it can disengage from the second engaging portion 372 to unlock and detach the heat preservation door 34.

[0084] Specifically, in this embodiment, the first engaging portion 371 is provided on the side of the handle 345 facing the inner liner 24. Specifically, the first engaging portion 371 is a hook. The hook can be provided at both ends of the handle 345, and the hook can be provided on the connecting arm 3451.

[0085] Please see Figure 6 The locking structure 37 also includes a fixing seat 373. The fixing seat 373 is fixedly disposed on the inner liner 24. The fixing seat 373 has a disassembly port 3730, which is opposite to the opening of the second mounting cavity 241 and is connected to the second mounting cavity 241. The fixing seat 373 is frame-shaped. The fixing seat 373 covers the opening of the second mounting cavity 241 located on one side of the inner liner 24, thus protecting the inner liner 24 at that location.

[0086] The mounting base 373 includes a mounting plate 3731 and a door seal 3732. The mounting plate 3731 is used for fixed connection with the inner liner 24. The disassembly port 3730 is opened in the middle of the mounting plate 3731. The mounting plate 3731 is fixedly connected to the inner liner 24 by screws. The second engaging part 372 is fixedly disposed on the outer surface of the mounting plate 3731 to realize the fixed setting of the second engaging part 372.

[0087] The door seal 3732 is provided to cover the periphery of the disassembly port 3730. The door seal 3732 can ensure that the insulation door 34 and the fixing seat 373 remain sealed, preventing heat from being lost from the edges of the insulation door 34 and the disassembly port 3730.

[0088] Specifically, in this embodiment, the first engaging part 371 is a hook. The second engaging part 372 is a slot. The handle 345 rotates to drive the hook to switch between a first position and a second position. When the hook is in the first position, it can cooperate with the slot to lock and position the heat preservation door 34. When the hook is in the second position, it disengages from the slot to unlock and detach the heat preservation door 34.

[0089] In other embodiments, the first engaging portion 371 can also be a slot, and correspondingly, the second engaging portion 372 can be a hook. Alternatively, the first engaging portion 371 can also be a buckle, a spring-loaded latch, etc. Then the second engaging portion 372 can also be a groove, etc. The specific structure of the first engaging portion 371 and the second engaging portion 372 is not limited here.

[0090] Please see Figure 15 The card hook is provided on the first card holding surface 3711. The card slot is provided with a second card holding surface 3721. The first card holding surface 3711 and the second card holding surface 3721 abut against each other, increasing the contact area between the first engaging part 371 and the second engaging part 372, and ensuring that the first engaging part 371 and the second engaging part 372 are stably engaged.

[0091] When the first latching surface 3711 and the second latching surface 3721 abut against each other, the outer surface of the insulated door 34 facing the low-temperature storage space and the outer surface of the handle 345 facing the low-temperature storage space remain flush. When the refrigerator door 22 is opened, the outer surfaces of the insulated door 34 and the handle 345 facing the low-temperature storage space become its exterior surfaces. Therefore, the exterior surfaces of the insulated door 34 and the handle 345 remain flush. This ensures that the handle 345 does not affect the overall flatness of the refrigerator's inner liner 24, preventing the handle 345 from protruding and affecting the refrigerator's internal cold storage space.

[0092] In other embodiments, the fixing base 373 can be omitted, and the second engaging part 372 is directly fixed to the inner liner 24. In this case, the first engaging part 371 and the second engaging part 372 can also achieve engaging and locking.

[0093] Please see Figure 10 , Figure 11 The locking structure 37 also includes an elastic element 374. The elastic element 374 is located between the handle 345 and the insulated door 34, and is confined between the handle 345 and the inner liner 24. The elastic element 374 has a certain pre-compression amount. (See also...) Figure 10 If the handle 345 is initially in the first position, then the elastic element 374 exerts a certain pressure on the handle 345. Please refer to [link / reference]. Figure 11 When the handle 345 is rotated to the second position, the elastic element 374 undergoes elastic deformation, and the first engaging part 371 disengages from the second engaging part 372, thus unlocking the insulation door 34, which can then be detached from the inner liner 24. When the handle 345 is released, the elastic element 374 returns to its elastic deformation, the handle 345 resets to the first position, and the locking structure 37 relocks the insulation door 34.

[0094] Please see Figure 12 Specifically, the elastic element 374 includes a spiral tube 3741, a first arm 3742, and a second arm 3743. The first arm 3742 and the second arm 3743 are located at the beginning and end of the spiral tube 3741, respectively. A rotating shaft 346 passes through the spiral tube 3741 and is rotatably connected to the elastic element 374. The first arm 3742 is mounted on a handle 345, and the second arm 3743 is limited and abuts against the insulated door 34. When the handle 345 rotates, the first arm 3742 and the second arm 3743 move relative to each other. Specifically, the elastic element 374 can be a torsion spring.

[0095] Please see Figure 13 The handle 345 has lugs 3454 at both ends, and the insulated door 34 has corresponding through holes 348 at both ends. The lugs 3454 pass through the through holes 348, positioning themselves between the insulated door 34 and the inner liner 24. The lugs 3454 have guide grooves 3456 for installing the first arm 3742. (See also...) Figure 10 , Figure 11The guide groove 3456 is long and narrow. When the handle 345 rotates, it drives the first arm 3472 to rotate. The first arm 3742 moves along the guide groove 3456.

[0096] Specifically, the first arm 3742 is provided with a bending portion 3744, which is slidably disposed within the guide groove 3456. The bending portion 3744 facilitates the connection between the first arm 3472 and the guide groove 3456.

[0097] Please see Figure 14 When it is necessary to disassemble the second support 32, pull the handle 345. The handle 345 rotates along the pivot 346, causing the first arm 3742 of the elastic element 374 to rotate around the pivot 346 and move along the guide groove 3456, so that the elastic element 374 is in a compressed state. At the same time, the first engaging part 371 and the second engaging part 372 on the handle 345 separate, and the locking structure 37 is unlocked. At this time, the heat preservation door 34 can be removed from the door body 22, and then the second support 32 can be cleaned.

[0098] Please see Figure 15 , Figure 16 After cleaning, when reinstalling the second support 32 and the insulation door 34, first insert the second support 32 into the first mounting cavity 221 through the disassembly port 3730 of the fixing seat 373. Then press down the handle 345, so that the first engaging part 371 of the handle 345 rotates and can avoid the obstruction of the second engaging part 372, allowing the insulation door 34 to enter the second mounting cavity 241. After the second support 32 and the insulation door 34 are in place, release the handle 345. The elastic element 374 in the locking structure 37 returns to its elastic deformation, and the first arm 3742 rotates around the pivot 346 and moves back along the guide groove 3456, so that the first engaging part 371 and the second engaging part 372 return to the locked state of relative engagement and resistance. At this time, the handle 345 and the outer surface of the panel 342 of the insulation door 34 remain flush.

[0099] In this embodiment, the refrigerator 1 uses a vacuum sealing structure 3 to vacuum-seal and seal the packaging bag 80, thereby achieving independent vacuum packaging of various foods. Therefore, multiple foods will not interfere with each other during vacuum preservation, and there will be no cross-contamination. Furthermore, when retrieving food, the packaging bag containing the corresponding food can be removed separately. Breaking the vacuum state of one packaging bag will not affect the vacuum state of other packaging bags. Packaging bags containing other foods can maintain a vacuum state, eliminating the need for multiple vacuuming processes. Therefore, compared to conventional refrigerators, the vacuum preservation space of the refrigerator in this embodiment is not limited to the size of the vacuum drawer, expanding the vacuum preservation range of the refrigerator 1 and improving its efficiency.

[0100] Furthermore, in the aforementioned vacuum sealing structure, the second support 32 can be detached from the door 22; this makes it convenient for users to clean up food residue spilled during the vacuuming process, providing a better user experience and improving the refrigerator's level of intelligence.

[0101] Furthermore, the second support 32 can be locked and unlocked by the locking structure 37. The locking and unlocking of the second support 32 is achieved by rotating the handle 345, which is convenient and provides a high level of user experience.

[0102] Although the invention has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary, and not restrictive. Since the invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A refrigerator, characterized in that, include: The box has an interior that forms a low-temperature storage space. The box includes an outer shell and an inner liner. The outer shell has a first mounting cavity, and the inner liner has a second mounting cavity. The first mounting cavity and the second mounting cavity are in communication. A vacuum sealing structure includes: a first support, a second support, and a vacuum pumping assembly. The first support, the second support, and the vacuum pumping assembly are installed in a first mounting cavity. The first support and the second support are movable relative to each other to form a vacuum pumping cavity. The vacuum pumping assembly is connected to the vacuum pumping cavity and is used to evacuate or depressurize the vacuum pumping cavity. The second support has a heat-insulating door on the side near the inner liner. The heat-insulating door is detachably installed at the opening of the second mounting cavity. The second support can be detached from the second mounting cavity through the heat-insulating door. The heat-insulating door has a rotatably connected handle. The vacuum sealing structure also includes a locking structure for locking the heat-insulating door to the inner liner. The handle is rotated to drive the locking structure to unlock or lock the heat-insulating door. The locking structure is located on both sides of the handle. The locking structure includes a first engaging portion on the handle and a second engaging portion on the inner liner; the first engaging portion and the second engaging portion can be engaged and connected in a limiting manner, and the rotation of the handle causes the first engaging portion to switch between a first position and a second position. When the first engaging portion is in the first position, it can cooperate with the second engaging portion to lock and position the heat preservation door; when the first engaging portion is in the second position, it can disengage from the second engaging portion to unlock and detach the heat preservation door. The locking structure includes an elastic element, which is positioned between the handle and the insulated door. When the handle is rotated to the second position, the elastic element undergoes elastic deformation, unlocking the first and second engaging parts. The insulated door can then be detached from the inner liner. When the elastic element returns to its elastic deformation, the handle returns to the first position, locking the insulated door. The elastic element includes a spiral tube, a first arm and a second arm. The first arm is mounted on the handle, and the second arm is limited and abuts against the heat-insulating door. When the handle is rotated, the first arm and the second arm move relative to each other. The handle has lugs at both ends, and the insulated door has through holes at both ends. The lugs pass through the through holes and enter the insulated door. The lugs have guide grooves for installing the first arm. The handle is located on the outside of the insulated door, and connecting arms are provided at both ends of the handle. The insulated door is located between the two connecting arms, and the connecting arms are located on the outside of the insulated door. The handle extends across both sides of the insulated door. A first shaft hole is provided on the connecting arm, and a second shaft hole is provided on both sides of the insulated door. The first shaft hole and the second shaft hole are rotatably connected by a rotating shaft. The rotating shaft passes through the handle and connects the two first shaft holes and the two second shaft holes.

2. The refrigerator according to claim 1, characterized in that, The guide groove is long and narrow. The handle rotates, causing the first arm to rotate, and the first arm moves along the guide groove.

3. The refrigerator according to claim 1, characterized in that, The rotating shaft is a single shaft that passes through and connects the two first shaft holes and the two second shaft holes.

4. The refrigerator according to claim 1, characterized in that, It also includes a fixing seat, which is fixedly disposed on the inner liner. The fixing seat has a disassembly port, which is opposite to the opening of the second mounting cavity and communicates with the second mounting cavity.

5. The refrigerator according to any one of claims 1-4, characterized in that, When the locking structure locks the insulated door, the outer side of the insulated door facing the low-temperature storage space is flush with the outer side of the handle facing the low-temperature storage space.

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