Refrigerator

Abstract

The application provides a refrigerator. The refrigerator comprises a cabinet and a vacuum packaging structure. The vacuum packaging structure comprises a first support, a second support and a vacuumizing assembly. 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 is used for vacuumizing or depressurizing the vacuumizing cavity. The vacuum packaging structure further comprises a driving device. The driving device comprises a driving rod. The first support is provided with a clearance hole. The driving rod is drivingly connected with the first support through the clearance hole. The driving rod is rotatably arranged in the clearance hole and is limited in the first support. The driving device of the above refrigerator is convenient to install and realize.

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, which preserves 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, creating 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, and the outer side of the box has an installation groove.

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

[0008] The vacuum sealing structure further includes a driving device, which includes a driving rod. The first support has a clearance hole, and the driving rod passes through the clearance hole and is driven to connect with the first support. The driving rod is rotatably disposed in the clearance hole, so that the driving rod is confined within the first support.

[0009] In one embodiment, the drive rod includes a rotating shaft and a stop portion. The rotating shaft is rotatably received within the clearance hole, and the stop portion is located at the free end of the drive rod, and the stop portion abuts against and limits the first support.

[0010] In one embodiment, the stop portion is provided with protruding wings on both sides, the protruding wings protruding from the outside of the rotating shaft, and the protruding wings are used to abut against the first support.

[0011] In one embodiment, the outer edge of the convex fin has an arc-shaped edge.

[0012] In one embodiment, the clearance hole includes a pair of opposing first arc segments and a pair of opposing second arc segments, the first arc segments being adapted to the rotating shaft, the second arc segments being adapted to the stop portion, and the drive rod being able to pass through the clearance hole.

[0013] In one embodiment, the radius corresponding to the first arc segment is smaller than the radius corresponding to the second arc segment.

[0014] In one embodiment, the rotating shaft and the stop are integrally formed.

[0015] In one embodiment, the driving device further includes an elastic element that abuts against the driving rod and the first support; the driving rod extends and retracts to drive the first support to move, and the first support presses against the second support, causing the elastic element to undergo elastic deformation; the elastic element returns to its original shape, and the first support resets.

[0016] In one embodiment, the first support includes a base and a cover, the clearance hole is formed on the cover, and the base is provided with a receiving cavity for accommodating the elastic member at the position of the clearance hole, the elastic member being confined within the receiving cavity.

[0017] In one embodiment, a positioning post is provided inside the receiving cavity, and the elastic element is sleeved on the positioning post.

[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-sealed structure, the drive device is connected to the first support via a drive rod. The refrigerator described above offers convenient installation of the drive device, requiring no additional auxiliary structures to establish the connection between the drive rod and the first support. The drive device is easy to install and implement. Attached Figure Description

[0020] Figure 1 This is a perspective view of the refrigerator according to this embodiment;

[0021] Figure 2 for Figure 1 The exploded view of the refrigerator door shown;

[0022] Figure 3 for Figure 2 The sectional view of the door shown;

[0023] Figure 4 for Figure 2 A three-dimensional view of the vacuum packaging structure shown;

[0024] Figure 5 for Figure 4 A cross-sectional view of a portion of the vacuum packaging structure shown.

[0025] Figure 6 for Figure 5 The exploded view of the first support shown;

[0026] Figure 7 for Figure 5 A perspective view of the drive unit shown;

[0027] Figure 8 for Figure 7 A cross-sectional view of a portion of the drive unit shown.

[0028] Figure 9 for Figure 5 The diagram shown is an exploded view of the drive unit and the cover.

[0029] Figure 10 for Figure 9 The diagram shows the assembly process of the drive unit and the cover.

[0030] Figure 11 for Figure 9 The diagram shows the assembled structure of the drive unit and the cover.

[0031] Figure 12 for Figure 6 The diagram shows a partial structural diagram of the base.

[0032] The labels on the attached diagram are explained as follows: 1. Refrigerator;

[0033] 2. Box body; 22. Door body; 221. Mounting groove; 222. Insertion port;

[0034] 3. Vacuum sealing structure; 31. First support; 311. First cavity; 312. First sealing ring; 314. Stop rib; 313. Seat body; 314. Receiving cavity; 315. Cover body; 316. Relief hole; 3161. First arc-shaped segment; 3162. Second arc-shaped segment; 317. Positioning post;

[0035] 32. Second support; 321. Second cavity; 322. Second sealing ring;

[0036] 33. Mounting base; 330. Connecting ear; 335. Limiting rib; 3350. Mounting cavity;

[0037] 34. Drive unit; 341. Motor; 342. Drive rod; 3421. Shaft; 3422. Stop; 3423. Protruding fin; 3424. Arc edge; 345. Elastic element; 349. Connector;

[0038] 35. Vacuum assembly; 351. Vacuum pump; 352. Pressure detection device; 353. Pressure relief device;

[0039] 36. Vacuum chamber;

[0040] 38. Encapsulated components;

[0041] 4. Sealing plate; 80. Packaging bag; 9. Screws. Detailed Implementation

[0042] 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.

[0043] Traditional vacuum packaging machines mostly rely on manual mechanical transmission when packaging food, requiring users to manually press the lid to complete the vacuuming and sealing process. Therefore, traditional vacuum packaging machines are relatively inconvenient to use. Currently, in refrigerator vacuum preservation technology, most vacuum sealing structures use automatic pressing methods, improving ease of use. However, due to the space limitations of refrigerators, the automatic drive device for vacuum sealing structures presents many inconveniences and has low installation efficiency during installation.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Each functional space can be separated by an independent door 22 to seal that functional space. Alternatively, multiple functional spaces can share a single door 22 to seal all of them simultaneously. The correspondence between the door 22 and the functional spaces is not limited here.

[0048] 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 side wall of the door 22 of the cabinet 2, or on the inner or outer side wall of the storage compartment. To meet the usage habits of most users, the vacuum sealing structure 3 is disposed on the outer side wall of the door 22 of the cabinet 2. A mounting groove 221 for installing the vacuum sealing structure 3 is provided on the outer side wall of the door 22. The vacuum sealing structure 3 is fixedly installed in the mounting groove 221 by screws 9, expansion screws, etc. Furthermore, since the mounting groove 221 is located in the upper middle part of the door 22, 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.

[0049] Furthermore, a sealing plate 4 is provided at the opening of the mounting groove on the door body 22. The sealing plate 4 is used to cover the mounting groove. The sealing plate has an insertion port 222 for inserting a packaging bag. The insertion port 222 is provided on the door body 22 for user convenience and easy operation.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] The motion 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 specific motion of 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.

[0055] 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.

[0056] Please refer to it again. Figure 3 Specifically, 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.

[0057] 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.

[0058] 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 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] Mounting base 33 is used to support vacuum assembly 35. Vacuum assembly 35 is fixedly installed in mounting groove 221 of door body 22 via mounting base 33. Specifically, in this embodiment, mounting base 33 is provided with connecting lug 330 at its edge, through which mounting base 33 is fixedly connected to door body 22. Connecting lug 330 can be in the form of snap-fit, slot, screw hole, etc.

[0063] 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.

[0064] The mounting base 33 is equipped with multiple limiting ribs. The mounting base 33 can be a one-piece injection-molded plate structure. Therefore, the limiting ribs are also one-piece injection-molded. The mounting base 33 has a simple structure and can complete the assembly of the vacuum assembly without the need for additional fasteners, making it easy to operate.

[0065] The limiting ribs form multiple mounting cavities on the mounting base 33, and the vacuum assembly 35 is fixedly installed within these cavities. The mounting cavities can be designed with appropriate shapes and structures according to the specific device to be assembled, and can meet the installation requirements of various different devices. The mounting cavities can be square, arc-shaped, etc. The specific shape of the mounting cavities is not limited here. The vacuum assembly 35 is connected to the vacuum chamber 36. The vacuum assembly 35 is used to evacuate or depressurize the vacuum chamber 36.

[0066] Please see Figure 4 The vacuum pump 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 and mounting cavities for mounting the vacuum pump 351, the pressure detection device 352, and the pressure relief device 353.

[0067] Please also refer to Figure 5 Specifically, in this embodiment, the vacuum sealing structure 3 further includes a driving device 34. The driving device 34 is also mounted on the mounting base 33. The limiting ribs 335 of the mounting base 33 form a mounting cavity 3350 for mounting the driving device 34. There are two mounting cavities 3350, respectively located on both sides of the mounting base 33. The mounting cavities 3350 are adapted to the driving device 34. The driving device 34 needs to be fixedly mounted in the mounting cavity 3350 with screws to ensure stable installation.

[0068] The drive unit 34 drives the first support 31 and the second support 32 to move towards or away from each other. The drive unit 34 can control the automatic lifting and lowering of the first support 31 and / or the second support 32 to achieve automatic vacuum sealing and improve the automation performance of the refrigerator 1.

[0069] Specifically, in this embodiment, the driving device 34 is used to drive the first support 31 to move toward the second support 32. Furthermore, there are two driving devices 34, integrated into a box-like structure. The two driving devices 34 correspond to the two ends of the first support 31 and are mounted on both sides of the mounting base 33. During the movement of the first support 31, the two driving devices 34 can maintain the first support 31 in a balanced force-bearing motion toward the second support 32. Furthermore, when the driving devices 34 stop moving, they apply uniform pressure to the first support 31, ensuring a tight seal in the vacuum chamber 36 between the first support 31 and the second support 32.

[0070] In other embodiments, a single drive device may be provided, positioned in the middle region of the first support to ensure uniform force distribution between the first and second supports. Alternatively, three or more drive devices may be used, further enhancing the sealing effect between the first and second supports. The number of drive devices is not limited here.

[0071] In the vacuum sealing structure 3 described above, the driving device 34 can be either an electric driving device or a pneumatic driving device. Since a pneumatic driving device occupies a larger space, in this embodiment, the driving device 34 is an electric driving device. The driving device 34 is provided with a connector 349, which can transmit current and also be used to transmit electronic control signals.

[0072] Specifically, the drive device 34 may include a motor 341 and a transmission mechanism, which converts the rotational motion of the motor into linear motion. The transmission mechanism includes a gear set fixedly connected to the output shaft of the motor and a drive rod 342 meshing with the gear set. The drive rod 342 extends and retracts to drive the first support 31 to move up and down.

[0073] like Figure 6 As shown, specifically, the first support 31 includes a base 313 and a cover 315. The base 313 and the cover 315 are threaded together. A clearance hole 316 is provided on the cover 315. Please also refer to... Figure 5 The lower end of the drive rod 342 passes through the relief hole 316 and enters the seat 313. The drive rod 342 is driven to connect with the first support 31. The drive rod 342 is rotatably disposed in the relief hole 316, so that the drive rod 342 is confined within the first support 31.

[0074] The aforementioned driving device 34 is driven to the first support 31 via a driving rod 342. The driving rod 342 enters the base 313 through the clearance hole 316. When the driving rod 342 rotates within the clearance hole 316, it can be positioned relative to the first support 31. Therefore, the refrigerator described above is easy to install, requiring no other auxiliary structures to establish the connection between the driving rod 342 and the first support 31. Thus, the driving device 34 is easy to install and implement.

[0075] For details in this embodiment, please refer to Figure 7 and Figure 8 The drive rod 342 includes a rotating shaft 3421 and a stop portion 3422. The rotating shaft 3421 is rotatably housed within a clearance hole 316. The stop portion 3422 is located at the free end of the drive rod 342, and it abuts against and limits the movement of the first support 31. The rotating shaft 3421 is cylindrical. The stop portion 3422 is plate-shaped and is perpendicular to the axial direction of the rotating shaft 3421. Furthermore, the width of the stop portion 3422 is greater than the diameter of the rotating shaft 3421, and the stop portion 3422 protrudes relative to the outer surface of the rotating shaft 3421. When the rotating shaft 3421 rotates within the clearance hole 316, and the stop portion 3422 rotates to a point where it is misaligned with the clearance hole 316, the stop portion 3422 cannot disengage from the clearance hole 316, thereby driving the drive rod 342 into a connection with the first support 31.

[0076] The stop portion 3422 has protruding wings 3423 on both sides, which protrude from the outer side of the rotating shaft 3421. The protruding wings 3423 are used to abut against the first support 31. When the drive rod 342 rotates, the protruding wings 3423 are misaligned with the clearance hole 316, and then the protruding wings 3423 abut against the cover 315.

[0077] The outer edge of the convex fin 3423 is provided with an arc-shaped edge 3424. The arc-shaped edge 3424 can facilitate the alignment of the stop part 3422 with the relief hole 316, so that the drive rod 342 can smoothly extend into the relief hole 316.

[0078] Please see Figure 9 The clearance hole 316 includes a pair of oppositely arranged first arc-shaped segments 3161 and a pair of oppositely arranged second arc-shaped segments 3162. The first arc-shaped segment 3161 is adapted to the rotating shaft 3421, and the second arc-shaped segment 3162 is adapted to the arc-shaped edge 3424 of the convex fin 3423, so that the drive rod 342 can pass through the clearance hole 316.

[0079] Furthermore, the first arc-shaped segment 3161 is adapted to the rotating shaft 3421 so that the rotating shaft 3421 can rotate within the space enclosed by the first arc-shaped segment 3161. During the up-and-down movement of the drive rod 342, the rotating shaft 3421 and the first arc-shaped segment 3161 cooperate with each other to guide the up-and-down movement of the drive rod 342.

[0080] The rotation of the pivot 3421 drives the stop 3422 to rotate, causing the stop 3422 to be offset from the second arc-shaped segment 3162. The stop 3422 abuts and limits the first cover 315. The radius corresponding to the first arc-shaped segment 3161 is smaller than the radius corresponding to the second arc-shaped segment 3162. Therefore, the rotation position of the stop 3422 only needs to be offset from the position of the second arc-shaped segment 3162 to achieve the limiting and abutting effect of the stop 3422.

[0081] Please see Figure 10 and Figure 11 Specifically, in this embodiment, the central axes of the two first arc-shaped segments 3161 are perpendicular to the central axes of the two second arc-shaped segments 3162. After the stop part 3422 passes through the clearance hole 316, the rotating shaft 3421 is housed within the rotation space of the first arc-shaped segment 3161. The drive device 34 rotates 90 degrees as a whole, causing the rotating shaft 3421 to rotate 90 degrees, and the stop part 3422 to rotate 90 degrees. After the stop part 3422 rotates 90 degrees from its initial position coinciding with the second arc-shaped segment 3162, the central axes of the two stop parts 3422 coincide with the central axes of the two first arc-shaped segments 3161. Since the radius corresponding to the first arc-shaped segment 3161 is smaller than the radius corresponding to the second arc-shaped segment 3162, the stop part 3422 is stopped by the cover 315, and the drive rod 342 cannot be moved out of the clearance hole 316, thus realizing the installation of the drive rod 342.

[0082] The rotating shaft 3421 and the stop part 3422 are integrally formed. The drive rod 342 has a simple structure, avoiding assembly and other operations.

[0083] In other embodiments, the pivot 3421 may also be omitted. As long as the drive rod 342 can rotate within the relief hole 316 and the stop 3422 can be stopped and limited by the cover 315, the drive device 34 can also be installed.

[0084] The drive device 34 also includes an elastic element 345. The elastic element 345 abuts against the drive rod 342 and the first support 31. The drive rod 342 drives the first support 31 to move toward the second support 32. After the first support 31 contacts the second support 32, the first support 31 presses against the second support 32, and the second support 32 provides support to the first support 31. A relative force exists between the first support 31 and the drive rod 342. When the drive rod 342 continues to move downward, the elastic element 345 is compressed and undergoes elastic deformation. The elastic element 345 returns to its original deformation, and the first support 31 resets.

[0085] After the first support 31 comes into contact with the second support 32, the first support 31 needs to continue to move a certain distance relative to the second support 32 to ensure that the vacuum chamber 36 formed between the first support 31 and the second support 32 has a high sealing performance.

[0086] Furthermore, when the motor stops rotating, it will still rotate a short buffer distance due to inertia. The elastic element 345 contracts to provide this buffer distance, which can prevent the motor from stalling and protect the motor.

[0087] Specifically, corresponding to the position of the relief hole 316, the seat body 313 is provided with a receiving cavity 314 for accommodating the elastic member 345, and the elastic member 345 is confined within the receiving cavity 314.

[0088] Please see Figure 5 and Figure 12 Furthermore, a positioning post 317 is provided inside the receiving cavity 314, and the elastic element 345 is sleeved on the positioning post 317. The positioning post 317 and the receiving cavity 314 ensure that the elastic element 345 remains in position and prevent the elastic element 345 from moving during the elastic deformation process.

[0089] Furthermore, the positioning post 317 is located at the bottom of the receiving cavity 314, and the height of the positioning post 317 is less than the depth of the receiving cavity 314. The height setting of the positioning post 317 can prevent the drive rod 342 from abutting against the positioning post 317, thus avoiding affecting the fit between the drive rod 342 and the elastic member 345.

[0090] The elastic element 345 can be a spring or a rubber sleeve, etc. The specific form of the elastic element 345 is not limited here.

[0091] During the vacuuming phase, the sealed vacuum chamber 36 formed between the first support 31 and the second support 32 stops the drive rod 342 of the drive device 34 from driving the first support 31 to continue moving. However, due to the low air pressure inside the vacuum chamber 36, the first support 31 will move downward under pressure. Therefore, the elastic connection between the drive rod 342 and the elastic element 345 can protect the drive device 34.

[0092] In one embodiment, the motor is a stepper motor. The motor can be equipped with a stroke detector to detect the rotational stroke of the stepper motor and determine whether the first support has moved into position, thus precisely controlling the motor's operation. When the first support is in position, the motor is stopped. Alternatively, a microswitch can be installed on the first or second support. When the first support moves into position, it actuates the microswitch, and the controller, based on the feedback signal from the microswitch, controls the motor of the drive device to stop and lock at the current position. The microswitch can be a distance sensor, pressure sensor, etc.

[0093] After vacuuming is completed, the sealing assembly 38 is used to seal the packaging bag. 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 34 drives the first support 31 to move in the opposite direction. The elastic element 345 then returns to its original deformation, the stop part 3422 of the driving rod 342 abuts against the cover 315, and the driving rod 342 moves 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.

[0094] 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.

[0095] Furthermore, in the aforementioned vacuum-sealed structure, the drive device 34 is driven to the first support via the drive rod 342. The refrigerator described above is easy to install, requiring no other auxiliary structures to establish the connection between the drive rod 342 and the first support. The drive device is convenient to install and easy to implement.

[0096] 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, and the outer side of the box has an installation groove. A vacuum sealing structure is installed in the mounting groove. The vacuum sealing structure includes a first support, a second support, and a vacuum pumping assembly. The first support and the second support are movable relative to each other to form a vacuum chamber. The vacuum pumping assembly is connected to the vacuum chamber and is used to evacuate or depressurize the vacuum chamber. The vacuum packaging structure further includes a driving device, which includes a driving rod. The first support has a clearance hole, and the driving rod passes through the clearance hole and is drivingly connected to the first support. The drive rod includes a rotating shaft and a stop portion. The rotating shaft is rotatably housed in the clearance hole, and the stop portion is located at the free end of the drive rod. The stop portion has protruding wings on both sides, which protrude outward from the outside of the rotating shaft and are used to abut against the first support. The outer edge of the protruding wings has an arc-shaped edge. The clearance hole includes a pair of oppositely arranged first arc segments and a pair of oppositely arranged second arc segments. The first arc segments are adapted to the rotating shaft, and the second arc segments are adapted to the arc edge of the convex fin. The drive rod can pass through the clearance hole. The radius corresponding to the first arc segment is smaller than the radius corresponding to the second arc segment. The rotation of the shaft drives the stop to rotate, so that the stop and the second arc segment are staggered, so as to achieve the stop and the first support abutting and limiting.

2. The refrigerator according to claim 1, characterized in that, The rotating shaft and the stop are integrally formed.

3. The refrigerator according to any one of claims 1-2, characterized in that, The driving device further includes an elastic element, which abuts against the driving rod and the first support; the driving rod extends and retracts to drive the first support to move, and the first support presses against the second support, causing the elastic element to undergo elastic deformation; the elastic element returns to its original shape, and the first support resets.

4. The refrigerator according to claim 3, characterized in that, The first support includes a base and a cover. The clearance hole is formed on the cover. The base has a receiving cavity for accommodating the elastic member at the position of the clearance hole. The elastic member is confined within the receiving cavity.

5. The refrigerator according to claim 4, characterized in that, The receiving cavity is provided with a positioning post, and the elastic element is sleeved on the positioning post.

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