A refrigerator

Abstract

The present invention discloses a refrigerator, which includes a storage compartment and a door body for opening or closing the storage compartment. A vacuum packaging device is provided on the door body. The vacuum packaging device includes: a lower support, on the upper side of which there is a first open cavity; an upper support, on the lower side of which there is a corresponding second open cavity, and the upper support can move in a direction approaching or away from the lower support under the drive of a drive device; after the upper support moves in place in the direction approaching the lower support, the first open cavity and the second open cavity are docked and sealed to form a vacuum pumping area; a vacuum pumping assembly, which is connected to the vacuum pumping area through a pipeline and is used for vacuum pumping or pressure relief of the vacuum pumping area; wherein, a heat preservation small door is provided on the side of the door body where the lower support is close to the storage compartment, the lower support is detachably connected to the heat preservation small door, and the heat preservation small door is detachably connected to the inner liner of the door body. The refrigerator of the present invention can perform vacuum packaging treatment on a storage bag containing food ingredients; in addition, the lower support of the vacuum packaging device can be disassembled and cleaned, which is convenient for users to use.

Description

Technical Field

[0001] The present invention belongs to the field of household appliances, and particularly relates to a refrigerator. Background Art

[0002] In recent years, people's awareness of health has gradually increased, and the demand for food preservation has also increased accordingly. As the most commonly used household appliance for food storage, food preservation storage has become a technical requirement urgently to be solved in the field of refrigerators.

[0003] Currently, in response to the problem of food preservation storage, various manufacturers have introduced different preservation technologies. For example, vacuum preservation technology. Under vacuum conditions, the conditions for food spoilage have changed. First, in a vacuum environment, it is difficult for microorganisms and various promoting enzymes to survive, and it takes a long time to meet the requirements for microorganism growth. Second, in a vacuum state, the oxygen in the container is greatly reduced, and various chemical reactions cannot be completed, so the food will not be oxidized, which also enables the food to be preserved for a long time.

[0004] The vacuum preservation technology currently applied to refrigerators mainly sets a sealed drawer in the refrigerator. A small vacuum pump installed outside the drawer is used to evacuate the drawer to keep the drawer in a negative pressure state, thus realizing the preservation of the food in the drawer. This preservation method has the following limitations: 1. Since the evacuation process needs to be achieved through a vacuum pump, the vacuum pump will occupy a part of the storage space in the refrigerating compartment; 2. This preservation method requires the drawer to be sealed. Otherwise, a vacuum state cannot be formed inside the drawer. Therefore, higher requirements are put forward for the forming and assembly processes of the drawer; 3. This preservation method can only preserve the food in the drawer and cannot play a preservation role for the food in other areas of the refrigerator. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing refrigerator has an unsatisfactory preservation effect. Furthermore, a refrigerator with a low cost, no occupation of storage space, and capable of preserving food in each area is proposed.

[0006] To solve the above technical problems, the present invention discloses a refrigerator, which includes a storage compartment and a door body for opening or closing the storage compartment. A vacuum packaging device is provided on the door body, and the vacuum packaging device includes: a lower support, on the upper side of which there is a first open cavity; an upper support, on the lower side of which there is a corresponding second open cavity, and the upper support can move in a direction approaching or away from the lower support under the drive of a drive device; after the upper support moves in place in the direction approaching the lower support, the first open cavity and the second open cavity are docked and sealed to form a vacuum pumping area; a vacuum pumping assembly, which is connected to the vacuum pumping area through a pipeline and is used for pumping vacuum or relieving pressure in the vacuum pumping area; wherein, a heat preservation small door is provided on the side of the door body close to the inner liner of the door body, and the lower support is detachably connected to the heat preservation small door.

[0007] The technical solution of the present invention has the following technical effects compared with the prior art:

[0008] The refrigerator of the present invention is provided with a vacuum packaging device on the door body, which can perform vacuum packaging treatment on the storage bag containing food ingredients to be put into the refrigerator; compared with the existing vacuum drawer, the vacuum packaging device of the present invention can perform vacuum pumping and fresh-keeping treatment on the food ingredients stored in various compartments of the refrigerator, expanding the fresh-keeping range; in addition, the lower support in the vacuum packaging device can be detached from the door body; it is convenient for users to clean the food residues sucked into the lower support during the vacuum pumping process, with good user experience and improved intelligence level of the refrigerator. Description of the Drawings

[0009] The following will describe in detail the preferred embodiments of the present invention through the drawings, which will help to understand the purpose and advantages of the present invention, wherein:

[0010] Figure 1 is a schematic structural diagram of the refrigerator according to Embodiment 1 of the present invention;

[0011] Figure 2 is a schematic structural diagram of the refrigerating door body according to Embodiment 1 of the present invention;

[0012] Figure 3 is an exploded view of the refrigerating door body according to Embodiment 1 of the present invention;

[0013] Figure 4 is a side sectional view of the vacuum packaging device of the present invention;

[0014] Figure 5 is a front and reverse structural schematic diagram of the upper support of the vacuum packaging device of the present invention;

[0015] Figure 6 is an assembly schematic diagram of the upper support, the drive device and the vacuum pumping assembly in the vacuum packaging device of the present invention;

[0016] Figure 7 It is an exploded view of the upper support, drive device and vacuum pumping assembly in the vacuum packaging device of the present invention;

[0017] Figure 8 It is a connection relationship diagram of the upper support and the filter container in the vacuum packaging device of the present invention;

[0018] Figure 9 It is a connection relationship diagram of the upper support and the filter net in the vacuum packaging device of the present invention;

[0019] Figure 10 It is an exploded view of the upper support, heating device and sealing ring of the present invention;

[0020] Figure 11 It is a partial cross-sectional view of the connection between the upper support and the heating device of the present invention;

[0021] Figure 12 It is a schematic diagram of the connection relationship between the upper support and the drive device when the upper support is in the initial position of the present invention;

[0022] Figure 13 It is a schematic diagram of the connection relationship between the upper support and the drive device when the upper support is in the lowered position of the present invention;

[0023] Figure 14A It is a schematic diagram of the structure of the lower support, heat preservation small door and door body in the locked state in Embodiment 1 of the present invention;

[0024] Figure 14B It is a schematic diagram of the structure of the lower support, heat preservation small door and door body in the unlocked state in Embodiment 1 of the present invention;

[0025] Figure 14C It is a schematic diagram of the structure of the lower support and the heat preservation small door removed from the door body in Embodiment 1 of the present invention;

[0026] Figure 15 It is a front and reverse structure schematic diagram of the heat preservation small door and the lower support in the assembled state in Embodiment 1 of the present invention;

[0027] Figure 16 It is an exploded view of the heat preservation small door, lower support and lock hook assembly in Embodiment 1 of the present invention;

[0028] Figure 17 It is a schematic diagram of the structure of the lock hook assembly installed on the heat preservation small door in Embodiment 1 of the present invention;

[0029] Figure 18 It is a partial cross-sectional view of the lock hook assembly installed on the heat preservation small door in Embodiment 1 of the present invention;

[0030] Figure 19 It is a three-dimensional view of the lower lock hook in Embodiment 1 of the present invention;

[0031] Figure 20 Schematic diagrams of the forward and reverse structures of the upper locking hook in Embodiment 1 of the present invention;

[0032] Figure 21A Schematic diagram of the structure of the lower support, heat preservation small door and door body in the locked state in Embodiment 2 of the present invention;

[0033] Figure 21B Schematic diagram of the structure of the lower support and heat preservation small door removed from the door body in Embodiment 2 of the present invention;

[0034] Figure 22 Exploded view of the heat preservation small door, lower support and locking hook assembly in Embodiment 2 of the present invention;

[0035] Figure 23A Schematic diagram of the structure of the lower support, heat preservation small door and door body in the locked state in Embodiment 3 of the present invention;

[0036] Figure 23B Schematic diagram of the structure of the heat preservation small door and door body in the unlocked state in Embodiment 3 of the present invention;

[0037] Figure 23C Schematic diagram of the structure of the lower support and heat preservation small door removed from the door body in Embodiment 3 of the present invention;

[0038] Figure 24 Schematic diagram of the structure of the refrigerator in Embodiment 4 of the present invention;

[0039] Figure 25 Exploded view of the refrigerating door body in Embodiment 4 of the present invention;

[0040] Figure 26 Schematic diagram of the structure of the refrigerator in Embodiment 5 of the present invention;

[0041] Figure 27 Exploded view of the refrigerating door body in Embodiment 5 of the present invention;

[0042] Figure 28 Exploded view of the lower support in Embodiment 5 of the present invention;

[0043] Figure 29A Schematic diagram of the structure of the lower support and door body in the locked state in Embodiment 5 of the present invention;

[0044] Figure 29B Schematic diagram of the structure of the lower support in the state of being removed from the door body in Embodiment 5 of the present invention;

[0045] Figure 30A Schematic diagram of the structure of the lower support and door body in the locked state in Embodiment 6 of the present invention;

[0046] Figure 30B Schematic diagram of the structure of the lower support in the state of being removed from the door body in Embodiment 6 of the present invention. Detailed implementation manners

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0049] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] Embodiment 1

[0051] Figure 1 is a perspective view of a specific implementation manner of the refrigerator of the present invention; referring to Figure 1 , the refrigerator 1 of this embodiment has an approximate cuboid shape. The appearance of the refrigerator 1 is defined by a storage compartment 100 that defines a storage space and a plurality of door bodies 200 provided in the storage compartment 100. Among them, referring to Figure 2 , the door body 200 includes a door body outer shell 210 located outside the storage compartment 100, a door body inner liner 220 located inside the storage compartment 100, an upper end cover 230, a lower end cover 240, and a heat insulation layer located between the door body outer shell 210, the door body inner liner 220, the upper end cover 230, and the lower end cover 240; generally, the heat insulation layer is filled with foaming material.

[0052] The storage compartment 100 has an open box body, and the storage compartment 100 is vertically divided into a lower freezer compartment A and an upper refrigerator compartment 100B. Each of the separated spaces can have an independent storage space. Specifically, the freezer compartment 100A is located at the lower side of the storage compartment 100 and can be selectively covered by a drawer-type freezer door A. The space above the freezer compartment 100A is partitioned into left and right sides to respectively form the refrigerator compartment 100B, and the refrigerator compartment 100B can be selectively opened or closed by a refrigerator door body 200B pivotally mounted on the refrigerator compartment 100B.

[0053] As Figure 3 、 Figure 4 shown, a vacuum packaging device 300 is provided on the door body 200 of the refrigerator. The vacuum packaging device 300 is used to evacuate and seal a storage bag; the vacuum packaging device 300 can be provided either on the freezer door body 200A or on the refrigerator door body 200B. Since the refrigerator door body 200B is located on the upper side, for the sake of conforming to the user's usage habit, it is usually preferably provided on the refrigerator door body 200B.

[0054] As Figures 4 - 17 is an embodiment of the vacuum packaging device 300. In this embodiment, as Figure 4 shown, the vacuum packaging device 300 includes: a lower support 310 provided with a first open cavity 311; an upper support 320 provided with a second open cavity 321. The upper support 320 can move in a direction approaching or away from the lower support 310 under the drive of a drive device 340. After the upper support 320 moves in place in the direction approaching the lower support 310, the first open cavity 311 is docked and sealed with the second open cavity 321 to form a vacuum extraction area 301. The above-mentioned vacuum packaging device 300 realizes the locking and unlocking of the lower support 310 and the upper support 320 by controlling the automatic lifting of the drive device 340, realizes automatic vacuum packaging, and improves the intelligent level of the refrigerator.

[0055] Specifically, in order to improve the sealing performance of the vacuum extraction area 301, as Figure 4 shown, the lower support 310 is provided with a first sealing groove 313 on the outer periphery of the first open cavity 311, and the upper support 320 is provided with a second sealing groove 323 on the outer periphery of the second open cavity 321. The positions of the first sealing groove 313 and the second sealing groove 323 are opposite and a sealing ring 350 is provided inside. The two sealing rings 350 arranged in the first sealing groove 313 and the second sealing groove 323 seal the vacuum extraction area 301 inside, realizing reliable sealing of the vacuum extraction area 301.

[0056] Specifically, as Figure 5As shown, a limiting part is provided in the first open cavity 311 or the second open cavity 321 for limiting the insertion position of the storage bag inserted into the vacuum extraction area 301 to prevent the opening position of the storage bag from extending out of the vacuum extraction area 301. Specifically, the limiting part is a limiting rib 322 provided in the first open cavity 311 or the second open cavity 321, and the height of the limiting rib 322 is greater than the depth of the first open cavity 311 or the second open cavity 321; the length of the limiting rib 322 is slightly lower than the length of the first open cavity 311 or the second open cavity 321. When the user inserts the storage bag into the vacuum extraction area 301, the limiting rib 322 can block the storage bag from continuing to be inserted inward. In other embodiments, a position detection device may also be provided in the vacuum extraction area 301. Specifically, a microwave sensor or an infrared sensor can be used to detect the presence or absence of the storage bag inserted into the vacuum extraction area 301, and then send a signal indicating whether the storage bag is in place to the controller. The controller can control the opening of the vacuum pump according to the in-place signal. By providing the position detection device, it can automatically detect whether the storage bag is in place, and the controller can then automatically control the on-off of the vacuum pump.

[0057] The vacuum packaging device 300 further includes a vacuum extraction assembly 330, as Figure 6 , Figure 7 shown. The vacuum extraction assembly 330 includes a vacuum pump 331 communicated with the vacuum extraction area 301 through a pipeline 335; a pressure detection device 332 and a pressure relief device 333 are further provided on the pipeline 335. Among them, the pressure detection device 332 is specifically a pressure sensor for detecting the pressure in the vacuum extraction area 301; the pressure relief device 333 is specifically an electric pressure relief valve, and when the electric pressure relief valve is opened, the vacuum extraction area 301 is depressurized. When the user performs vacuum packaging, the vacuum pump 331 is turned on to perform vacuum extraction on the vacuum extraction area 301. When the pressure detection device 332 detects that the pressure in the vacuum extraction area 301 reaches the set negative pressure value, the controller controls the vacuum pump 331 to stop. By providing the pressure sensor, the vacuum degree of the vacuum extraction area 301 can be controlled, and the vacuum pump 331 can be turned on and off according to the detection value of the pressure sensor, ensuring the vacuum extraction effect. After the vacuum extraction and packaging operations are completed, the vacuum extraction area 301 can be automatically depressurized by opening the above-mentioned electric pressure relief valve, which is convenient for the user to take out the storage bag. To prevent foreign objects in the vacuum extraction area 301 from entering the vacuum pump 331 through the pipeline 335, a filter protection device is further included on the pipeline 335. In one embodiment, as Figure 8As shown, the filtering and protecting device is specifically a filtering container 334 connected in series on the pipeline 335. The upper end of the filtering container 334 is provided with an inlet and an outlet. The inlet is communicated with the vacuum pumping area 301 through the pipeline 335, and the outlet is communicated with the vacuum pump 331 through the pipeline 335. Foreign matters in the vacuum pumping area 301 enter the filtering container 334 through the pipeline 335 and are retained at the bottom of the filtering container 334, preventing foreign matters from entering the vacuum pump 331. To facilitate the cleaning of the filtering container 334, more specifically, the filtering container 334 includes a tank body with an opening and an upper cover detachably connected to the tank body. The inlet and the outlet are arranged on the upper cover. During cleaning, the tank body can be removed for cleaning, avoiding the problem of poor sealing of the pipeline 335 caused by frequent disassembly and assembly of the pipeline 335.

[0058] In another embodiment, as Figure 9 shown, the filtering and protecting device is a filter screen 336 arranged on the pipeline 335. Specifically, for the convenience of disassembly and assembly, the filter screen 336 is arranged at the position of the ventilation hole 324 at the connection position between the upper support 320 and the pipeline 335. After the user moves the upper support 320 to the highest position, the filter screen 336 can be disassembled, assembled or cleaned from the lower side.

[0059] The connection hole between the vacuum pumping area 301 and the pipeline 335 can be one. Of course, in order to avoid the problem that the connection hole is blocked by foreign matters in the vacuum pumping area 301, resulting in a vacuum pumping failure, the pipeline 335 can also be connected to the vacuum pumping area 301 through two or more connection holes. The pipelines 335 are arranged in parallel and are connected to the main pipeline through a tee or a multi-way connector; the pressure sensor and the electronic pressure relief valve are arranged on the main pipeline.

[0060] As Figure 4 shown, the vacuum packaging device 300 further includes a packaging area 302 located outside the vacuum pumping area 301. The packaging area 302 is used for plastic-sealing the storage bag after the vacuum pumping is completed. The packaging area 302 is provided with an oppositely arranged heat-insulating door seal 360 and a heating device 370; specifically, the heating device 370 is installed in a groove on the lower surface of the upper support 320; the heat-insulating door seal 360 is installed in a groove on the upper surface of the lower support 310 of the upper support 320; when the upper support 320 moves to form a sealed vacuum pumping area 301 with the lower support 310, the heat-insulating door seal 360 in the packaging area 302 abuts against the heating device 370. After the vacuum pumping is completed, the storage bag can be quickly plastic-sealed by the heating device 370 in the packaging area 302. After the working set time of the heating device 370, the driving device 340 is controlled to drive the upper support 320 to move upward, and the user can take out the storage bag to complete the plastic-sealing of the storage bag.

[0061] More specifically, as Figure 10 , Figure 11 shown, the heating device 370 includes a heating wire 371. A heat conducting plate 373 is arranged below the heating wire 371 and is used for diffusing the heating area of the heating wire 371 to increase the plastic sealing area of the storage bag and make the plastic sealing firm. The heating wire 371 extends along the length direction of the upper support 320 and bends upward on both sides of the upper support 320. The free ends of the heating wire 371 extending to the upper side of the upper support 320 are fixed to the upper support 320 through an insulating plate 372. Specifically, the insulating plate 372 is made of insulating material and is formed into a bent plate, covering the outside of the heating wire 371 to prevent the heating wire 371 from being exposed outside. Further, the two free ends of the heating wire 371 are respectively connected to two wires led out through a wiring terminal 374 through springs 375; by arranging the springs 375, the heating wire 371 can always be in a tensioned state, so that the heating wire 371 has a relatively high flatness, and the heat conducting plate 373 located below the heating wire 371 is in close contact with the storage bag; this can avoid the problem that the plastic sealing cannot be achieved due to the unevenness of the heating wire 371 resulting in non-solid contact at individual positions.

[0062] In the above-mentioned vacuum pumping and plastic sealing device, the driving device 340 can be an electric driving device or a pneumatic driving device; the pneumatic driving device occupies a relatively large space. Therefore, in this embodiment, the driving device 340 adopts an electric driving device. Specifically, as Figure 7 , Figure 12 and Figure 13 shown, the driving device 340 includes a motor 341 and a transmission mechanism. The transmission mechanism is used to convert the rotational motion of the motor into a linear motion, and the output end of the transmission mechanism is connected to the upper support. The transmission mechanism includes a first gear 342 fixedly connected to the output shaft of the motor; a second gear 343 meshing with the first gear 342; a third gear 344 fixedly connected to the second gear 343, and an output rack 345 meshing with the third gear 344. Among them, a pin hole is arranged below the output rack 345, and the upper support 320 is connected to the output rack 345 through a pin shaft 346 inserted into the pin hole. Through the above-mentioned transmission mechanism, the rotation of the motor 341 is converted into the up and down movement of the upper support 320.

[0063] Specifically, as Figure 7As shown, a connecting plate 347 is provided between the upper support 320 and the driving device 340. The connecting plate 347 is threadedly connected to the upper support 320, and a guiding groove 3471 is formed on the connecting plate 347. The lower end of the output rack 345 is inserted into the guiding groove 3471. Long strip-shaped pin holes are respectively provided on the guiding groove 3471 and the lower end of the output rack 345. The pin shaft 346 passes through the pin holes of the guiding groove 3471 and the output rack 345. There is a gap between the lower end surface of the output rack 345 and the bottom of the guiding groove 3471, and an elastic body 348 is provided in the gap.

[0064] As Figure 12 shown, in the initial position, the upper support 320 is located at the highest position; in the pressing stage, as Figure 13 shown, the driving device 340 drives the upper support 320 to move downward. In order to ensure the tight fit between the lower support 310 and the upper support 320, usually the set rotation stroke of the motor 341 is used as the in-place judgment signal. Therefore, setting the elastic body 348 between the output rack 345 and the guiding groove 3471 enables the output rack 345 to continue to move downward for a certain distance after the upper support 320 moves down to contact the lower support 310, compressing the elastic body 348, preventing the motor 341 from stalling, protecting the motor 341, and keeping the pressing force stable.

[0065] In the vacuum pumping stage, a sealed vacuum pumping area 301 is formed between the lower support 310 and the upper support 320. Due to the decrease in air pressure, under the action of atmospheric pressure, the upper support 320 moves downward. At this time, due to the existence of the long strip-shaped pin hole, the output rack 345 can remain stationary when the upper support 320 moves downward, protecting the entire driving device 340.

[0066] In order to accurately control the moving displacement of the upper support 320 and then judge whether the upper support 320 moves in place to form a sealed space for the vacuum pumping area 301; in one implementation, the motor 341 is a stepping motor 341, and it is judged whether the upper support 320 moves in place by detecting the rotation stroke of the stepping motor 341. In another implementation, a microswitch is provided on the lower support 310 or the upper support 320; after the upper support 320 moves in place, the microswitch is triggered, and the controller controls the driving device 340 to stop and lock at the current position according to the feedback signal of the microswitch.

[0067] The driving device 340 may be provided as one, and the output gear is located in the middle area of the upper support 320. In this case, it is easy to cause insufficient tight fitting between the edge area of the upper support 320 and the lower support 310, resulting in air leakage in the vacuum pumping area 301. Therefore, in order to provide the sealing performance of the vacuum pumping area 301, the driving devices 340 are respectively arranged on both sides of the upper support 320. Correspondingly, one connecting plate 347 is provided, and the connecting plate 347 is provided with two guiding grooves 3471; the two output racks 345 respectively extend into the guiding grooves 3471.

[0068] Specifically, as Figure 6 , Figure 7 shown, the driving device 340 and the vacuum pumping assembly 330 are both installed on the mounting seat 305 located on the upper side of the upper support 320. An air vent hole 324 is formed in the upper support 320 for communicating with the vacuum pumping assembly 330. Among them, one side of the mounting seat 305 is provided with three chambers, including a vacuum pump mounting chamber 3051 located at the middle position and driving device mounting chambers 3052 located on the left and right sides. In order to maintain the overall aesthetic appearance of the outer surface of the refrigerator door body 200 and the convenience of applying the vacuum packaging device 300, as Figure 3 shown, the door body housing 210 is provided with an inwardly recessed mounting chamber 211. After the driving device 340 is connected to the upper support 320, it is connected to the mounting seat 305 by screws. After the vacuum pumping assembly 330 is connected to the air vent hole 324 on the upper support 320, it is installed on the mounting seat 305. After forming a component, the whole is installed in the mounting chamber 211 by screws passing through the ear parts on both sides of the mounting seat 305. Each component realizes modular assembly, and each part is not exposed on the outer surface, and the integrity of the device is better.

[0069] When the user applies the vacuum packaging device 300 to seal a food bag, especially when sealing foods such as flour or liquids in powder form, during the vacuum pumping process, the powder or liquid may enter the vacuum pumping area 301 and finally accumulate in the first opening cavity 311 of the lower support 310. Therefore, in order to facilitate the user to clean the food residues in the lower support 310, the lower support 310 is detachably installed relative to the door body 200.

[0070] Among them, the manner in which the lower support 310 is installed on the door body 200 is not unique. In this embodiment, as Figures 14A - 14C shown, the lower support 310 can be detachably installed on the door body 200 from the inner side of the door body 200 (i.e., the side with the inner liner). Since the door body 200 of the refrigerator must ensure heat insulation, a heat preservation small door 250 is provided on the inner side part of the lower support 310 facing the storage chamber 100. Among them, as Figure 14CAs shown, an installation hole 201 communicating inside and outside is formed on the door body 200. The lower support 310 and the heat-insulating small door 250 are inserted into the installation hole 201 from the inner side of the door body 200, realizing the disassembly and cleaning of the lower support 310 and the heat-insulating performance of the door body 200 at the same time.

[0071] In one implementation, as Figure 13 shown, the lower support 310 and the heat-insulating small door 250 are integrally formed; as shown in FIGS. 14, Figure 15 shown, the lower support 310 and the heat-insulating small door 250 are formed by a first shell 251 and a second shell 252 having an open cavity structure and a heat-insulating member disposed between the first shell 251 and the second shell 252. Among them, the first shell 251 and the second shell 252 are snap-connected. The first shell 251 is provided with an extension arm 2511 in a direction away from the second shell 252. The lower support 310 is formed on the extension arm 2511. The first open cavity 311 is an open groove formed on the upper side of the extension arm 2511. A first sealing groove 313 is provided on the outer periphery of the open groove.

[0072] To further ensure the heat insulation of the door body 200 and avoid cold leakage through the gap between the installation hole 201 and the heat-insulating small door 250, as shown in FIGS. 14, Figure 15 shown, a small door seal 253 is provided between the heat-insulating small door 250 and the door inner liner 220. Specifically, the first shell 251 is provided with a support arm 2512 at a position where it cooperates with the door inner liner 220. The size of the support arm 2512 is larger than the size of the installation hole 201. An installation groove surrounding the installation hole 201 is provided on the support arm 2512. The small door seal 253 is installed in the installation groove.

[0073] Specifically, to ensure that the heat-insulating small door 250 is reliably fixed on the door body 200, a locking device 400 is provided between the heat-insulating small door 250 and the door inner liner 220. The locking device 400 is used to lock or unlock the heat-insulating small door 250 on the door body 200.

[0074] As Figures 14A - 14C , Figure 15 , Figure 16 shown, the locking device 400 includes: a hook assembly provided on the heat-insulating small door 250, and a locking groove 221 provided on the door inner liner 220. The hook assembly includes a hook penetrating through the heat-insulating small door 250. The hook can be switched between a first position and a second position. When the hook is in the first position, it can cooperate with the locking groove 221 to lock the heat-insulating small door 250. When the hook is in the second position, it disengages from the locking groove 221 to unlock the heat-insulating small door 250.

[0075] Specifically, in order to improve the reliability of the locking device 400, two locking grooves 221 and the locking hooks are respectively provided, wherein the locking grooves 221 are located on the upper and lower sides of the mounting hole 201. As Figures 15 - 20 shown, the locking hook assembly includes an upper locking hook 420, a lower locking hook 410 and a return spring 430. As Figure 19 shown, the lower locking hook 410 includes a hooking portion 414 that cooperates with the locking groove 221 on the lower side, a hinged portion 412 that is rotatably connected to the heat preservation small door 250, and a pulling portion 411 located on the lower side of the heat preservation small door 250. Among them, the pulling portion 411 and the hooking portion 414 are respectively located on both sides of the hinged portion 412. The lower locking hook 410 further includes a lower connecting portion 413 connected to the upper locking hook 420, wherein the lower connecting portion 413 extends above the pulling portion 411. Specifically, the end of the lower connecting portion 413 is formed into a T-shaped protrusion 4131. As Figure 20 shown, the upper locking hook 420 includes a hooking portion 421 that cooperates with the locking groove 221 on the upper side, and an upper connecting portion 423 connected to the lower locking hook 410. Specifically, the lower end of the upper connecting portion 423 is formed into an open groove structure 4231, and the T-shaped protrusion 4131 is inserted into the open groove 4231 to realize the connection between the upper locking hook 420 and the lower locking hook 410. A return spring 430 is provided between the upper locking hook 420 and the upper end surface of the heat preservation small door 250. More specifically, a connecting shaft 422 is formed on the upper locking hook 420, and the return spring 430 is sleeved on the connecting shaft 422.

[0076] As Figure 15 shown, a guiding and positioning portion is formed on the inner surface of the second housing 252, the upper connecting portion 423 is clamped on the guiding and positioning portion, and the upper locking hook 420 can slide along the guiding and positioning portion. Specifically, the guiding and positioning portion is a hook 2521 formed on the inner surface of the second housing 252. The hook 2521 is located on the left and right sides of the upper connecting portion 423 and extends a certain distance in the up and down direction. The upper connecting portion 423 is clamped between the two hooks 2521.

[0077] In the initial state, under the elastic force of the reset spring 430, the upper locking hook 420 and the lower locking hook 410 are located at the first position to lock the heat preservation small door 250 and the inner door liner 220; when the user manually operates the lower locking hook 410, the lower locking hook 410 rotates around the hinge portion 412, the hook portion 414 moves downward to disengage from the lower locking groove 221, and at the same time the connecting portion pushes the upper locking hook 420 upward, the upper locking hook 420 disengages from the upper locking groove 221, and the upper locking hook 420 and the lower locking hook 410 are located at the second position to unlock the heat preservation small door 250 and the inner door liner 220.

[0078] To ensure the aesthetic appearance of the refrigerator door body 200, as shown in Figure 1 、 Figure 2 A bar door 260 is provided on the refrigerator door body 200 at the area where the vacuum packaging device 300 is located. The lower end of the bar door 260 is hinged to the door body 200 and can be flipped to a position perpendicular to the surface of the door body housing 210; the upper end of the bar door 260 is connected to the door body housing 210 through a first push-and-spring switch 212. With the bar door 260 structure, when the bar door 260 is opened, a storage bag containing food can be placed on the bar door 260 for vacuum packaging treatment, which is convenient for the user to operate. When the bar door 260 is closed, the aesthetic appearance of the door body 200 is ensured.

[0079] The inner side of the bar door 260 further includes an operation panel 270 covering the outside of the installation cavity. An insertion port 271 is formed on the operation panel 270, and the lower surface of the insertion port 271 is flush with the upper surface of the first opening cavity 311. In this way, the vacuum packaging device 300 can be entirely hidden behind the operation panel 270. When the user performs vacuum packaging, the opening of the storage bag can be directly inserted into the insertion port 271 of the operation panel 270 and directly extended to the upper surface of the first opening cavity 311. When the upper support 320 moves downward, the opening of the storage bag can be placed in the vacuum extraction area 301. Specifically, the operation panel 270 is detachably connected to the door body housing 210. A display and control device 272 is also provided on the operation panel 270. The display and control device 272 includes an indicating device for displaying the working state of the vacuum packaging device 300; and a control button for controlling the start or stop of the vacuum packaging device 300. The user can determine whether the storage bag can be taken out according to the working state of the vacuum packaging device 300 displayed by the display and control device 272.

[0080] When the user applies this vacuum packaging device 300, the storage bag to be packaged is inserted through the insertion port 271 provided on the operation panel 270. After being inserted in place (the storage bag abuts against the limit rib 322), the user triggers the start button on the operation panel 270, and the motor 341 starts. Then, the upper support 320 is controlled to descend until the upper support 320 moves in place (the vacuum pumping area 301 is sealed), and then the vacuum pump 331 is controlled to start to perform vacuum pumping on the vacuum pumping area 301. The storage bag is vacuumed through the storage bag opening located in the vacuum pumping area 301; when the pressure sensor detects that the pressure value reaches the set negative pressure value, the vacuum pump 331 is controlled to stop and at the same time the heating device 370 is started to work. After the heating device 370 works for a set time, the electric pressure relief valve is controlled to start; then the linear motor 341 is controlled to start to control the upper support 320 to rise until the first open cavity 311 and the second open cavity 321 are separated; the display and control device 272 on the operation panel 270 indicates that the user can take out the storage bag, and the vacuum packaging of the storage bag is completed.

[0081] Embodiment 2

[0082] The structure of this Embodiment 2 is basically the same as that of Embodiment 1, and the difference lies in the connection method between the lower support 310 and the heat preservation small door 250. Specifically, in this embodiment, with reference to Figure 21A 、 Figure 21B as shown, the lower support 310 is detachably connected to the heat preservation small door 250. As Figure 22 shown, the heat preservation small door 250 is formed by a first shell 251 and a second shell 252 with an open cavity structure and a heat insulating member arranged between the first shell 251 and the second shell 252. Among them, the first shell 251 is snap-connected to the second shell 252. The first shell 251 is provided with an extension arm 2511 in the direction away from the second shell 252, and the lower support 310 is detachably connected to the extension arm 2511.

[0083] Specifically, a first limiting portion extending upward is formed at the end of the extension arm 2511, and a second limiting portion matching the first limiting portion is formed on the lower side of the lower support 310. The first limiting portion and the second limiting portion cooperate to position the lower support 310 on the extension arm 2511. More specifically, the first limiting portion is a limiting plate, and the limiting portion is a baffle formed at the bottom of the lower support 310 and extending downward. The baffle is inserted into the inner side of the limiting plate to install the lower support 310 on the extension arm 2511, avoiding the problem that the vacuum pumping area is not tightly sealed due to the horizontal movement of the lower support 310.

[0084] In order to further ensure the thermal insulation of the door body 200 and prevent cold from leaking through the gap between the mounting hole 201 and the thermal insulation small door 250, a small door seal 253 is provided between the thermal insulation small door 250 and the door body inner liner 220. Specifically, the first shell 251 is provided with a support arm 2512 at a position matching the door body inner liner 220, and the size of the support arm 2512 is larger than the size of the mounting hole 201. The support arm 2512 is provided with a mounting groove surrounding the mounting hole 201, and the small door seal 253 is installed in the mounting groove.

[0085] Specifically, in order to ensure that the small heat-insulating door 250 is reliably fixed to the door body 200 , a locking device 400 is provided between the small heat-insulating door 250 and the door body inner liner 220 .

[0086] like Figure 20 As shown, the locking device 400 includes: a locking hook 440 hinged at the bottom of the heat-insulating small door 250, the middle part of the locking hook 440 is arranged to be connected to the hinge shaft with the heat-insulating small door 250, and is connected to the heat-insulating small door 250; it also includes a locking groove formed on the inner liner 220 of the door body and cooperating with the locking hook; and a reset torsion spring 450 mounted on the hinge shaft; one leg of the reset torsion spring rests on the heat-insulating small door 250, and the other leg rests on the locking hook 440; in the initial state, the torsion of the reset torsion spring 450 is suitable for the locking hook 440 to be in the first position, so that the heat-insulating small door 250 can be installed on the door body.

[0087] Specifically, in order to improve the aesthetics of the small door, a mounting groove is formed at the bottom of the small door, and the lock hook is installed inside the mounting groove. Figure 21A , Figure 21B The process of disassembling the insulation door 250 and the lower support 310 is shown. When the insulation door 250 and the lower support 310 are installed on the door body 200, the locking hook cooperates with the locking groove to realize the locking state of the insulation door 250; when the insulation door 250 and the lower support 310 need to be disassembled, the locking hook is pulled away from the locking groove, the locking device 400 is in the unlocked state, the insulation door 250 and the lower support 310 are pulled outward, and the lower support 310 can be removed from the insulation door 250 to clean the lower support 310. In this embodiment, the lower support 310 is detachably connected to the insulation door 250, which can make the cleaning of the lower support 310 simpler and more convenient.

[0088] Example 3

[0089] The structure of the present embodiment 2 is basically the same as that of the embodiment 1, and the difference lies in the connection method between the lower support 310 and the heat-insulating small door 250 and the door body 200.

[0090] As shown Figures 23A - 23C in the figure, the lower support 310 and the heat preservation small door 250 are independently arranged. A limiting part for restricting the in-place position of the lower support 310 is arranged on the lower side of the mounting hole 201. One end of the lower support 310 abuts against the limiting part, and the other end abuts against the heat preservation small door 250. The heat preservation small door 250 can be installed on the door body 200 by using the locking device 400 in Embodiment 1 or Embodiment 2.

[0091] Embodiment 4

[0092] The structure of this Embodiment 4 is basically the same as that of Embodiment 1, the difference lies in the structure of the door body 200 in the area where the vacuum packaging device 300 is located.

[0093] Specifically, in this embodiment, referring to Figure 22 Figure 23, in order to ensure the aesthetic appearance of the refrigerator door body 200 and prevent the vacuum packaging device 300 from being exposed outside the door body 200, a secondary door panel 280 is provided on the door body 200 in the area where the vacuum packaging device 300 is located. The width of the secondary door panel 280 is the same as that of other areas of the door body 200. The secondary door panel 280 is connected to this area by clamping or bonding. The surface of the secondary door panel 280 is flush with the surface of other areas of the door body 200. An insertion opening 281 is formed on the secondary door panel 280, and the lower surface of the insertion opening 281 is flush with the upper surface of the first open cavity 311. When the user performs vacuum packaging, the opening of the storage bag can be directly inserted into the insertion opening 281 of the secondary door panel 280 and directly extend to the upper surface of the first open cavity 311. When the upper support 320 moves downward, the opening of the storage bag can be placed in the vacuum extraction area 301. A display and control device 282 is also provided on the secondary door panel 280. The display and control device 282 includes an indicating device for displaying the working state of the vacuum packaging device 300; and a control button for controlling the start or stop of the vacuum packaging device 300. The user can determine whether the storage bag can be evacuated according to the working state of the vacuum packaging device 300 displayed by the indicating device.

[0094] Embodiment 5

[0095] The structure of this Embodiment 5 is basically the same as that of Embodiment 1, the difference lies in the way the lower support 310 is installed on the door body 200.

[0096] Specifically, as Figures 26 - 2 shown in Figure 9, in this embodiment, the lower support 310 is detachably installed on the door body 200 from the outside of the door body 200.

[0097] More specifically, the lower support 310 is detachably connected to the door body 200 by means of pushing and ejecting. Among them, as Figure 27 , Figure 28 shown, a second push and eject switch 380 is provided on the connection surface between the lower support 310 and the door body 200. The second push and eject switch 380 includes a push and eject lock 381 and a lock catch 382; a groove for arranging the lock catch 382 is formed on the inner side surface of the lower support 310, and the push and eject lock 381 is fixed on the outer surface of the door body 200.

[0098] As Figure 29A shown, when the lower support 310 is pushed along the vertical direction of the door body 200, the push and eject lock 381 and the lock catch 382 are latched, and the lower support 310 is installed on the door body 200; as Figure 29B shown, when the lower support 310 is pushed again, the push and eject lock 381 releases the lock catch 382, so that the lower support 310 can be detached and moved out of the door body 200. The user can clean the lower support 310 separately, which is convenient for the user to operate.

[0099] Embodiment 6

[0100] The structure of this Embodiment 6 is basically the same as that of Embodiment 5, the difference lies in the way the lower support 310 is installed on the door body 200.

[0101] Specifically, in this embodiment, as Figure 30A , Figure 30B shown, the lower support 310 is detachably installed on the door body 200 from the outside of the door body 200.

[0102] More specifically, the lower support 310 is detachably connected to the door body 200 by means of snap connection. The lower support 310 and the door body 200 are respectively formed with a first snap connection portion 391 and a second snap connection portion 392 that cooperate with each other. Among them, the first snap connection portion 391 is formed on the lower surface of the lower support 310, specifically a folded hook, and the second snap connection portion 392 is fixedly connected to the front side surface of the door body 200. The lower support 310 moves inward in the direction close to the door body 200 until the first snap connection portion 391 and the second snap connection portion 392 cooperate to realize the installation of the lower support 310; during disassembly, the lower support 310 is pulled outward, and the first snap connection portion 391 and the second snap connection portion 392 are elastically deformed to disengage from each other. The user can clean the lower support 310 separately, which is convenient for the user to operate.

[0103] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or alterations derived therefrom still fall within the protection scope of the present invention.

Claims

1. A refrigerator, comprising a storage compartment and a door body for opening or closing the storage compartment, the door body including a door body outer shell, a door body inner liner, and a heat insulation layer located between the door body outer shell and the door body inner liner; A cavity is formed inside the door body, and a vacuum packaging device is arranged inside the cavity. The vacuum packaging device is used for evacuating and plastic-sealing a storage bag. It is characterized in that: The vacuum packaging device includes: A lower support, on the upper side of which there is a first open cavity; An upper support, on the lower side of which there is a corresponding second open cavity. The upper support can move in a direction approaching or away from the lower support under the drive of a drive device. After the upper support moves in place in the direction approaching the lower support, the first open cavity and the second open cavity are docked and sealed to form a vacuum pumping area; A vacuum pumping assembly, which is communicated with the vacuum pumping area through a pipeline and is used for pumping vacuum or relieving pressure in the vacuum pumping area; The vacuum packaging device further includes a packaging area located outside the vacuum pumping area, and the packaging area is used for plastic-sealing a storage bag after vacuum pumping is completed. In the packaging area, there is a heat-insulating door seal provided on one of the lower support and the upper support, and a heating device provided on the other of the lower support and the upper support, and the heat-insulating door seal is arranged opposite to the heating device; The lower support can be detachably installed on the door body from the inner side of the door body; On the inner side part of the lower support facing the storage compartment, a heat-insulating small door is provided. An installation hole communicating inside and outside is opened on the door body, and the heat-insulating small door is installed in the installation hole. The lower support and the heat-insulating small door are inserted into the installation hole from the inner side of the door body; The heat-insulating small door is formed by a first shell and a second shell having an open cavity structure and a heat-insulating member arranged between the first shell and the second shell. The first shell is provided with an extension arm in a direction away from the second shell, and the lower support is formed on the extension arm; A locking device is provided between the heat-insulating small door and the door body inner liner, and the locking device is used for locking or unlocking the heat-insulating small door on the door body; The locking device includes a lock hook assembly provided on the heat-insulating small door and a locking groove provided on the inner liner of the door body.

2. The refrigerator according to claim 1, characterized in that: The lower support is detachably installed on the heat-insulating small door longitudinally.

3. The refrigerator according to claim 1, characterized in that: The first shell and the second shell are snap-connected.

4. The refrigerator according to claim 1, characterized in that: At the end of the extension arm, a first limiting portion extending upward is formed, and on the lower side of the lower support, a second limiting portion matching the first limiting portion is formed. The first limiting portion and the second limiting portion cooperate to position the lower support on the extension arm.

5. The refrigerator according to claim 1, characterized in that: A small door seal is provided between the heat-insulating small door and the door body inner liner.

6. The refrigerator according to claim 1, wherein: The locking device includes: a lock hook assembly provided on the heat-insulating small door, and a locking groove provided on the inner liner of the door body. The lock hook assembly includes a lock hook penetrating through the heat-insulating small door. The lock hook can be switched between a first position and a second position. When the lock hook is in the first position, it can cooperate with the locking groove to lock the heat-insulating small door. When the lock hook is in the second position, it is disengaged from the locking groove to unlock the heat-insulating small door.

7. The refrigerator according to claim 1, characterized in that: The vacuum pumping assembly includes: a vacuum pump, which is communicated with the vacuum pumping area through a pipeline; a pressure detection device and a pressure relief device are further arranged on the pipeline, the pressure detection device is used for detecting the pressure in the vacuum pumping area, and the pressure relief device is controlled to relieve the pressure of the vacuum pumping area.

8. The refrigerator according to claim 1, characterized in that: The driving device includes a motor and a transmission mechanism, the transmission mechanism is used for converting the rotational motion of the motor into a linear motion, and the output end of the transmission mechanism is connected to the upper support.

9. The refrigerator according to claim 8, characterized in that: The driving device and the vacuum pumping assembly are installed on a mounting seat, the door body housing is provided with an inwardly recessed mounting cavity, and the mounting seat and the upper support are installed in the mounting cavity.

10. The refrigerator according to claim 1, wherein: A bar door is arranged on the outer side of the door body at the area where the vacuum packaging device is located, the lower end of the bar door is hinged to the door body, and the upper end is connected to the door body housing through a first push-and-release switch.

11. The refrigerator according to claim 10, characterized in that: The inner side of the bar door further includes an operation panel covering the outside of the cavity, an insertion interface suitable for inserting a bag to be packaged is formed on the operation panel, and a display and control device is further arranged on the operation panel, and the display and control device includes an indicating device for displaying the working state of the vacuum packaging device.

12. The refrigerator according to claim 1, characterized in that: A secondary door panel is arranged on the door body at the area where the vacuum packaging device is located, the surface of the secondary door panel is flush with the surface of the door body housing, an insertion interface suitable for inserting a bag to be packaged is formed on the secondary door panel, and a display and control device is further arranged on the secondary door panel, and the display and control device includes an indicating device for displaying the working state of the vacuum packaging device.

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