A refrigerator

Abstract

The present invention discloses a refrigerator, comprising a storage chamber and a door body for opening or closing the storage chamber, wherein a vacuum packaging device is provided on the door body, and the vacuum packaging device comprises: a lower support, wherein a first opening cavity is provided on the upper side of the lower support; an upper support, wherein a second opening cavity is provided on the lower side of the upper support, and the upper support can be moved toward or away from the lower support under the driving of a driving device; after the upper support moves into position toward the direction close to the lower support, the first opening cavity is docked with the second opening cavity and sealed to form a vacuum zone; a vacuum assembly is used to vacuum or release the vacuum zone; wherein a small heat preservation door is provided on the side of the door body close to the storage chamber of the lower support, and the small heat preservation door is detachably connected to the inner liner of the door body through a locking device. The refrigerator of the present invention can perform vacuum packaging on storage bags containing food; in addition, the lower support of the vacuum packaging device can be disassembled and washed, which is convenient for users to use.

Description

Technical Field

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

[0002] In recent years, people's health awareness 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 and storage has become a technical demand that needs to be urgently addressed in the refrigerator field.

[0003] At present, various manufacturers have introduced different preservation technologies to address the issue of food preservation and storage. For example, vacuum preservation technology changes the conditions for food spoilage under vacuum conditions. First, in a vacuum environment, it is difficult for microorganisms and various enzymes to survive, and it takes a long time to meet the requirements for microbial growth; secondly, in a vacuum state, the oxygen in the container is greatly reduced, various chemical reactions cannot be completed, and food will not be oxidized, which also allows food to be kept fresh for a long time.

[0004] The vacuum preservation technology currently used in refrigerators mainly involves setting up sealed drawers in the refrigerator, and using a small vacuum pump installed outside the drawer to evacuate the drawer, so that the drawer maintains a negative pressure state, thereby preserving the food in the drawer. This preservation method has the following limitations: 1. Since the vacuum treatment needs to be achieved through a vacuum pump, the vacuum pump will occupy part of the storage space in the refrigerated compartment; 2. This preservation method requires the drawer to be sealed, otherwise a vacuum state cannot be formed in the drawer, so it places high demands on the molding and assembly process of the drawer; 3. This preservation method can only preserve the food in the drawer, but cannot preserve 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 preservation effect of existing refrigerators is not ideal, and thus a refrigerator with low cost, no storage space occupation and the ability to preserve food in all areas is proposed.

[0006] In order to solve the above technical problems, the present invention discloses a refrigerator, comprising a storage chamber and a door body for opening or closing the storage chamber, the door body comprising a door body outer shell and a door body inner shell, a vacuum packaging device is provided on the door body, and the vacuum packaging device comprises: an upper support and a lower support, the upper support can be moved in a direction close to or away from the lower support under the drive of a driving device; after the upper support and the lower support are connected to the opposite surfaces, a vacuum zone and a packaging zone are formed, the vacuum zone is used to vacuum a storage bag plugged therein, and the packaging zone is used to heat and plastic-seal the storage bag plugged therein; a vacuum assembly, the vacuum assembly is connected to the vacuum zone through a pipeline, and is used to vacuum or relieve pressure on the vacuum zone; wherein, the door body is provided with a small insulation door on one side of the door body inner shell, the lower support is detachably connected to the door body through the small insulation door, and the small insulation door and the door body inner shell are connected by a locking device.

[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 storage bags containing food that are about to be placed in the refrigerator; compared with the existing vacuum drawers, the vacuum packaging device of the present invention can perform vacuum packaging and fresh-keeping treatment on food stored in various compartments of the refrigerator, thereby expanding the preservation range; in addition, the lower support in the vacuum packaging device can be removed from the door body; it is convenient for users to clean up food residues sucked into the lower support during the vacuuming process, which provides good user experience and improves the intelligence level of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the objects and advantages of the present invention, wherein:

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

[0011] Figure 2 This is a schematic diagram of the structure of a refrigerated door body in Example 1 of the present invention;

[0012] Figure 3 This is an exploded view of a refrigerated door body in Example 1 of the present invention;

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

[0014] Figure 5 It is a schematic diagram of the structure of the upper support of the vacuum packaging device of the present invention in the forward and reverse directions;

[0015] Figure 6It is a schematic diagram of the assembly of the upper support, the driving device and the vacuum pumping component in the vacuum packaging device of the present invention;

[0016] Figure 7 An exploded view of the upper support, the driving device and the vacuum pumping assembly in the vacuum packaging device of the present invention;

[0017] Figure 8 A diagram showing the connection relationship between the upper support and the filter container in the vacuum packaging device of the present invention;

[0018] Fig. 9 A diagram showing the connection relationship between the upper support and the filter screen in the vacuum packaging device of the present invention;

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

[0020] Fig.11 A partial cross-sectional view of the connection between the upper support and the heating device of the present invention;

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

[0022] Fig.13 It is a schematic diagram of the connection relationship between the upper support and the driving device when the upper support is in the descending position of the present invention;

[0023] Fig.14A This is a schematic diagram of the structure of the lower support, the heat-insulating small door and the door body in a locked state in Embodiment 1 of the present invention;

[0024] Fig. 14B This is a schematic diagram of the structure of the lower support, the heat-insulating small door and the door body in the unlocked state in Embodiment 1 of the present invention;

[0025] Fig. 14C This is a schematic diagram of the structure in which the lower support and the small heat-insulating door are removed from the door body in Embodiment 1 of the present invention;

[0026] Fig.15 It is a schematic diagram of the forward and reverse structures of the thermal insulation door and the lower support in the assembled state in Example 1 of the present invention;

[0027] Fig.16 It is an exploded view of the thermal insulation door, the lower support and the lock hook assembly in Example 1 of the present invention;

[0028] Fig.17 This is a schematic diagram of the structure in which the lock hook assembly is installed on the thermal insulation door in Example 1 of the present invention;

[0029] Fig.18 It is a partial cross-sectional view of the lock hook assembly installed on the thermal insulation door in Example 1 of the present invention;

[0030] Fig.19 It is a three-dimensional diagram of the lower locking hook in Embodiment 1 of the present invention;

[0031] Fig. 20 Schematic diagram of the forward and reverse structures of the locking hook in Embodiment 1 of the present invention;

[0032] Fig.21A This is a schematic diagram of the structure of the lower support, the heat-insulating small door and the door body in a locked state in Embodiment 2 of the present invention;

[0033] Fig.21B This is a schematic diagram of the structure in which the lower support and the small heat-insulating door are removed from the door body in Embodiment 2 of the present invention;

[0034] Fig. 22 An exploded view of the thermal insulation door, the lower support and the lock hook assembly in Example 2 of the present invention;

[0035] Fig.23A This is a schematic diagram of the structure of the lower support, the heat-insulating small door and the door body in a locked state in Embodiment 3 of the present invention;

[0036] Fig. 23B This is a schematic diagram of the structure of the thermal insulation small door and the door body in the unlocked state in Example 3 of the present invention;

[0037] Fig.23C This is a schematic diagram of the structure in which the lower support and the small heat-insulating door are removed from the door body in Embodiment 3 of the present invention;

[0038] Fig.24 This is a schematic structural diagram of a refrigerator according to Embodiment 4 of the present invention;

[0039] Fig.25 This is an exploded view of a refrigerated door body in Example 4 of the present invention;

[0040] Fig.26 This is a schematic structural diagram of a refrigerator according to Embodiment 5 of the present invention;

[0041] Fig. 27 This is an exploded view of a refrigerated door body in Example 5 of the present invention;

[0042] Fig.28 is an exploded view of the lower support in Example 5 of the present invention;

[0043] Fig.29A This is a schematic diagram of the structure of the lower support and the door body in a locked state in Embodiment 5 of the present invention;

[0044] Fig.29B This is a schematic structural diagram of a state in which the lower support is removed from the door body in Embodiment 5 of the present invention;

[0045] Fig. 30A This is a schematic diagram of the structure of the lower support and the door body in a locked state in Embodiment 6 of the present invention;

[0046] Fig. 30B It is a schematic structural diagram of the state where the lower support is removed from the door body in Example 6 of the present invention. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, 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 a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In addition, the technical features involved in the 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] Example 1

[0051] Figure 1 is a stereogram of a specific embodiment of the refrigerator of the present invention; Figure 1 The refrigerator 1 of this embodiment has an approximately rectangular parallelepiped shape. The appearance of the refrigerator 1 is defined by a storage chamber 100 defining a storage space and a plurality of door bodies 200 disposed in the storage chamber 100. Figure 2 The door body 200 includes a door body outer shell 210 located outside the storage chamber 100, a door body inner shell 220 located inside the storage chamber 100, an upper end cover 230, a lower end cover 240, and an insulation layer located between the door body outer shell 210, the door body inner shell 220, the upper end cover 230, and the lower end cover 240; usually, the insulation layer is filled with foam material.

[0052] The storage chamber 100 has an open box body, and the storage chamber 100 is vertically divided into a freezing chamber A below and a refrigerating chamber 100B above. Each of the separated spaces may have an independent storage space. In detail, the freezing chamber 100A is located at the lower side of the storage chamber 100 and can be selectively covered by a drawer-type freezing chamber door A. The space above the freezing chamber 100A is divided into a left side and a right side to form a refrigerating chamber 100B, respectively, and the refrigerating chamber 100B can be selectively opened or closed by a refrigerating chamber door body 200B pivotably mounted on the refrigerating chamber 100B.

[0053] like Figure 3 , Figure 4 As shown, a vacuum packaging device 300 is provided on the door body 200 of the refrigerator, and the vacuum packaging device 300 is used to evacuate and plastic-seal the storage bag; the vacuum packaging device 300 can be set on the freezing door body 200A or the refrigerating door body 200B. Since the refrigerating door body 200B is located on the upper side, in order to comply with the user's usage habits, it is usually preferably set on the refrigerating door body 200B.

[0054] like Figure 4-Figure 17 is an embodiment of the vacuum packaging device 300. In this embodiment, Figure 4 As shown, the vacuum packaging device 300 includes: a lower support 310, the lower support 310 is provided with a first opening cavity 311; an upper support 320, the upper support 320 is provided with a second opening cavity 321, and the upper support 320 can move toward or away from the lower support 310 under the drive of the driving device 340. After the upper support 320 moves toward the direction close to the lower support 310 and is in place, the first opening cavity 311 and the second opening cavity 321 are docked and sealed to form a vacuum zone 301. The 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 driving device 340, realizes automatic vacuum packaging, and improves the intelligence of the refrigerator.

[0055] Specifically, in order to improve the sealing performance of the vacuum zone 301, Figure 4 As shown, the lower support 310 is provided with a first sealing groove 313 on the outer periphery of the first opening cavity 311, and the upper support 320 is provided with a second sealing groove 323 on the outer periphery of the second opening cavity 321. The first sealing groove 313 and the second sealing groove 323 are opposite to each other and are provided with sealing rings 350 inside. The two sealing rings 350 provided in the first sealing groove 313 and the second sealing groove 323 seal the vacuum zone 301 inside, thereby achieving reliable sealing of the vacuum zone 301.

[0056] Specifically, Figure 5As shown, a limiting part is provided in the first opening cavity 311 or the second opening cavity 321, which is used to limit the insertion position of the storage bag inserted into the vacuum zone 301, so as to prevent the opening position of the storage bag from extending out of the vacuum zone 301; specifically, the limiting part is a limiting rib 322 provided in the first opening cavity 311 or the second opening cavity 321, and the height of the limiting rib 322 is greater than the depth of the first opening cavity 311 or the second opening cavity 321; the length of the limiting rib 322 is slightly less than the length of the first opening cavity 311 or the second opening cavity 321. When the user inserts the storage bag into the vacuum zone 301, the limiting rib 322 can prevent the storage bag from continuing to be inserted inward; in other embodiments, the vacuum zone 301 can also be provided with an in-place detection device, 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 zone 301, and then send a signal to the controller whether the storage bag is in place, and the controller can control the vacuum pump to start according to the in-place signal. By providing an in-place detection device, it is possible to automatically detect whether the storage bag is in place, and the controller then automatically controls the on and off of the vacuum pump.

[0057] The vacuum packaging device 300 further includes a vacuum pumping component 330, such as Figure 6 , Figure 7 As shown, the vacuum assembly 330 includes a vacuum pump 331 connected to the vacuum area 301 through a pipeline 335; the pipeline 335 is also provided with a pressure detection device 332 and a pressure relief device 333, wherein the pressure detection device 332 is specifically a pressure sensor, which is used to detect the pressure of the vacuum 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 area 301 is depressurized. When the user performs vacuum packaging, the vacuum pump 331 is turned on to vacuum the vacuum area 301. When the pressure detection device 332 detects that the pressure of the vacuum area 301 reaches the set negative pressure value, the controller controls the vacuum pump 331 to stop. By setting a pressure sensor, the vacuum degree of the vacuum 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, thereby ensuring the vacuum effect. After the vacuum and packaging operations are completed, the vacuum area 301 can be automatically controlled to be depressurized by opening the above-mentioned electric pressure relief valve, so that the user can take out the storage bag conveniently. In order to prevent foreign matter in the vacuum zone 301 from entering the vacuum pump 331 through the pipeline 335, the pipeline 335 also includes a filtering protection device. In one embodiment, Figure 8As shown, the filtering protection device is specifically a filtering container 334 connected in series to a pipeline 335, an inlet and an outlet are arranged at the upper end of the filtering container 334, the inlet is communicated with the vacuum zone 301 through the pipeline 335, and the outlet is communicated with the vacuum pump 331 through the pipeline 335; foreign matter in the vacuum zone 301 enters the filtering container 334 through the pipeline 335 and is retained at the bottom of the filtering container 334, so as to prevent foreign matter from entering the vacuum pump 331. In order 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, and the tank body can be removed for cleaning when cleaning, so as to avoid the problem of poor sealing of the pipeline 335 due to frequent disassembly and assembly of the pipeline 335.

[0058] In another embodiment, if Fig. 9 As shown, the filtering protection device is a filter screen 336 arranged on the pipeline 335. Specifically, in order to facilitate disassembly and assembly, the filter screen 336 is arranged at the vent 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 or cleaned from the bottom.

[0059] The connection hole between the vacuum zone 301 and the pipeline 335 can be one. Of course, in order to avoid a vacuum failure caused by foreign matter in the vacuum zone 301 blocking the connection hole when there is only one connection hole, two or more connection holes can be provided to be connected to the pipeline 335 respectively. The pipelines 335 are arranged in parallel and connected to the main pipe through a three-way or multi-way connector. The pressure sensor and the electronic pressure relief valve are arranged on the main pipe.

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

[0061] More specifically, if Fig.10 , Fig.11 As shown, the heating device 370 includes a heating wire 371, and a heat conducting plate 373 is provided at the lower side of the heating wire 371, which is used to diffuse the heating area of ​​the heating wire 371 so as 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 is bent upward on both sides of the upper support 320. The free end of the heating wire 371 extending to the upper side of the upper support 320 is 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, which is coated on the outer side of the heating wire 371 to prevent the heating wire 371 from being exposed to the outside. Furthermore, the two free ends of the heating wire 371 are connected to two wires led out through the wiring terminal 374 through springs 375 respectively; by providing the spring 375, the heating wire 371 can be always in a tensioned state, so that the heating wire 371 has a higher flatness, and the heat conducting plate 373 located on the lower side of the heating wire 371 is in close contact with the storage bag, thereby avoiding the problem of poor contact and failure to be plastic-sealed at individual positions due to the unevenness of the heating wire 371.

[0062] In the above vacuum packaging device, the driving device 340 can be an electric driving device or a pneumatic driving device; the pneumatic driving device occupies a large space, so in this embodiment, the driving device 340 is an electric driving device. Figure 7 , Fig.12 and Fig.13 As 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 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, wherein a pin hole is provided on the lower side of the output rack 345, and the upper support 320 is connected to the output rack 345 via a pin shaft 346 inserted into the pin hole. Through the above transmission mechanism, the rotation of the motor 341 is converted into the up and down movement of the upper support 320.

[0063] Specifically, 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 guide groove 3471 is formed on the connecting plate 347, the lower end of the output rack 345 is inserted into the guide groove 3471, the guide groove 3471 and the lower end of the output rack 345 are respectively provided with long pin holes, the pin shaft 346 is penetrated into the guide groove 3471 and the pin holes of the output rack 345, the lower end surface of the output rack 345 and the bottom of the guide groove 3471 have a gap, and an elastomer 348 is provided in the gap.

[0064] like Fig.12 As shown, in the initial position, the upper support 320 is located at the highest position; in the pressing stage, as shown Fig.13 As shown, the driving device 340 drives the upper support 320 to move downward. In order to ensure that the lower support 310 and the upper support 320 are closely matched, the set rotation stroke of the motor 341 is usually used as the in-position judgment signal. Therefore, an elastic body 348 is arranged between the output rack 345 and the guide groove 3471 so that the upper support 320 can move downward to contact the lower support 310. The output rack 345 can continue to move downward for a distance, so that the elastic body 348 is compressed, preventing the motor 341 from being blocked, protecting the motor 341, and keeping the pressing force stable.

[0065] During the vacuum stage, the closed vacuum area 301 formed between the lower support 310 and the upper support 320 has a lower air pressure. Under the action of atmospheric pressure, the upper support 320 moves downward. At this time, due to the presence of the long pin hole, the output rack 345 can remain in place when the upper support 320 moves downward, thereby protecting the entire drive device 340.

[0066] In order to accurately control the movement displacement of the upper support 320 and then determine whether the upper support 320 is moved into place so that the vacuum zone 301 forms a sealed space; in the embodiment, the motor 341 is a stepper motor 341, and whether the upper support 320 is moved into place is determined by detecting the rotation stroke of the stepper motor 341. In another embodiment, a micro switch is provided on the lower support 310 or the upper support 320; after the upper support 320 is moved into place, the micro switch 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 micro switch.

[0067] The driving device 340 can be provided as one, and the output gear is located in the middle area of ​​the upper support 320. This situation easily leads to the edge area of ​​the upper support 320 not fitting tightly with the lower support 310, resulting in air leakage in the vacuum zone 301; therefore, in order to provide the sealing of the vacuum zone 301, the driving devices 340 are respectively provided on both sides of the upper support 320. Accordingly, one connecting plate 347 is provided, and the connecting plate 347 is provided with two guiding grooves 3471; the two output racks 345 extend into the guiding grooves 3471 respectively.

[0068] Specifically, Figure 6 , Figure 7 As shown, the driving device 340 and the vacuum assembly 330 are both installed on the mounting base 305 located on the upper side of the upper support 320. The upper support 320 is provided with a vent hole 324 for communicating with the vacuum assembly 330. Among them, one side of the mounting base 305 is provided with three chambers, including a vacuum pump installation chamber 3051 located in the middle, and a driving device installation chamber 3052 located on the left and right sides. In order to maintain the overall aesthetics of the outer surface of the refrigerator door 200 and the convenience of using the vacuum packaging device 300, as shown in FIG. Figure 3 As shown, the door body shell 210 is provided with an inwardly recessed installation cavity 211. The driving device 340 is connected to the upper support 320 and then connected to the installation seat 305 through screws. The vacuum assembly 330 is connected to the vent hole 324 on the upper support 320 and then installed on the installation seat 305. After forming an assembly, the whole is installed in the installation cavity 211 by screws penetrated on the support ears on both sides of the installation seat 305. The various components are modularly assembled, and the various parts are not exposed on the outer surface. The integrity of the device is good.

[0069] When the user uses the vacuum packaging device 300 to plastic-seal a food bag, especially when powdered food such as flour or liquid is plastic-seal, the powder or liquid may enter the vacuum zone 301 during vacuuming and eventually accumulate in the first opening 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] There are many ways to install the lower support 310 on the door body 200. Figure 14A-Figure 14C As shown, the lower support 310 can be detachably mounted on the door body 200 from the inner side (i.e., the side with the inner liner) of the door body 200. Since the door body 200 of the refrigerator must ensure thermal insulation, the lower support 310 is provided with a heat preservation small door 250 on the inner side facing the storage chamber 100. Fig. 14CAs shown, the door body 200 is provided with a mounting hole 201 connecting the inside and the outside, and the lower support 310 and the heat-insulating small door 250 are plugged into the mounting hole 201 from the inside of the door body 200, thereby achieving the disassembly and cleaning of the lower support 310 and the heat-insulating performance of the door body 200.

[0071] In one embodiment, Fig.13 As shown, the lower support 310 and the heat preservation door 250 are integrally formed; as shown in FIG. 14, Fig.15 As shown, the lower support 310 and the heat-insulating 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. The first shell 251 is snap-connected with the second shell 252, 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, and a first sealing groove 313 is provided on the periphery of the open groove.

[0072] In order to further ensure the thermal insulation of the door body 200, it is prevented that cold air leaks through the gap between the mounting hole 201 and the thermal insulation small door 250, as shown in FIG. 14, Fig.15 As shown, a small door seal 253 is provided between the small insulation 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.

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

[0074] like Figure 14A-Figure 14C , Fig.15 , Fig.16 As shown, the locking device 400 includes: a locking hook assembly arranged on the thermal insulation door 250, and a locking groove 221 arranged on the door body 220, the locking hook assembly includes a locking hook passing through the thermal insulation door 250, the locking hook can be switched between a first position and a second position, the locking hook can cooperate with the locking groove 221 to lock the thermal insulation door 250 when in the first position, and the locking hook is disengaged from the locking groove 221 when in the second position to unlock the thermal insulation door 250.

[0075] Specifically, in order to improve the reliability of the locking device 400, two locking grooves 221 and two locking hooks are respectively provided, wherein the locking grooves 221 are located at the upper and lower sides of the mounting hole 201. Figure 15-Figure 20 As shown, the lock hook assembly includes an upper lock hook 420, a lower lock hook 410 and a return spring 430. Fig.19 As shown, the lower lock hook 410 includes a hook portion 414 that cooperates with the locking groove 221 on the lower side, is rotatably connected to the hinge portion 412 on the heat-insulating small door 250, and a handle portion 411 located on the lower side of the heat-insulating small door 250, wherein the handle portion 411 and the hook portion 414 are respectively located on both sides of the hinge portion 412. The lower lock hook 410 also includes a lower connection portion 413 connected to the upper lock hook 420, wherein the lower connection portion 413 extends along the upper side of the handle portion 411. Specifically, the end of the lower connection portion 413 is formed into a T-shaped protrusion 4131. Fig. 20 As 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 that is 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 achieve the connection between the upper locking hook 420 and the lower locking hook 410. The reset spring 430 is arranged 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 reset spring 430 is sleeved on the connecting shaft 422.

[0076] like Fig.15 As shown, a guide positioning portion is formed on the inner surface of the second shell 252, the upper connecting portion 423 is clamped on the guide positioning portion, and the upper locking hook 420 can slide along the guide positioning portion. Specifically, the guide positioning portion is a hook 2521 formed on the inner surface of the second shell 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-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 return spring 430, the upper locking hook 420 and the lower locking hook 410 are located in the first position to realize the locking of the thermal insulation door 250 and the door body inner liner 220; when the user pulls the lower locking hook 410 by hand, the lower locking hook 410 rotates around the hinge part 412, and the hooking part 414 moves downward to disengage from the locking groove 221 on the lower side. At the same time, the connecting part pushes the upper locking hook 420 upward to move upward, and the upper locking hook 420 disengages from the locking groove 221 on the upper side. The upper locking hook 420 and the lower locking hook 410 are located in the second position to realize the unlocking of the thermal insulation door 250 and the door body inner liner 220.

[0078] In order to ensure the aesthetic appearance of the refrigerator door 200, refer to Figure 1 , Figure 2 As shown, 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 it can be flipped to a position perpendicular to the surface of the door body shell 210; the upper end of the bar door 260 is connected to the door body shell 210 through a first push switch 212. The bar door 260 structure allows a storage bag containing food to be placed on the bar door 260 and then vacuum packaged when the bar door 260 is open, which is convenient for user operation. When the bar door 260 is closed, the appearance of the door body 200 is ensured to be aesthetically pleasing.

[0079] The inner side of the bar door 260 also includes an operation panel 270 covering the outer side of the installation cavity. The operation panel 270 is formed with an insertion port 271, 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 hidden as a whole behind the operation panel 270. When the user performs vacuum plastic sealing, the storage bag opening can be directly inserted from 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 zone 301. Specifically, the operation panel 270 is detachably connected to the door body shell 210. The operation panel 270 is also provided with a display control device 272, which includes an indicator device for displaying the working status 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 to extract the storage bag based on the working status of the vacuum packaging device 300 displayed on the display control device 272 .

[0080] When the user uses the vacuum packaging device 300, the user inserts the storage bag to be packaged through the insertion interface 271 set on the operation panel 270. After the storage bag is inserted into place (the storage bag contacts the limiting ribs 322), the user triggers the start button on the operation panel 270, the motor 341 starts, and controls the upper support 320 to descend until the upper support 320 moves into place (the vacuum area 301 is sealed), and then controls the vacuum pump 331 to start, vacuumize the vacuum area 301, and the storage bag passes through the vacuum area. The storage bag opening in 301 is evacuated; when the pressure sensor detects that the pressure value reaches the set negative pressure value, the vacuum pump 331 is controlled to stop and the heating device 370 is started. 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 and control the upper support 320 to rise until the first opening cavity 311 and the second opening cavity 321 are separated; the display control device 272 on the operation panel 270 indicates that the user can draw out the storage bag, and the vacuum packaging of the storage bag is completed.

[0081] Example 2

[0082] The structure of the present embodiment 2 is basically the same as that of the embodiment 1, except that the connection method between the lower support 310 and the heat preservation door 250 is different. Fig.21A , Fig.21B As shown, the lower support 310 is detachably connected to the heat preservation door 250. Fig. 22 The heat-insulating door 250 is formed by a first shell 251 with an open cavity structure and a second shell 252, and a heat-insulating member disposed between the first shell 251 and the second shell 252. The first shell 251 is snap-connected with the second shell 252, and the first shell 251 is provided with an extension arm 2511 in a 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 on 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, and 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, and the baffle is plugged into the inner side of the limiting plate to realize the installation of the lower support 310 on the extension arm 2511, so as to avoid the problem of the lower support 310 moving in the horizontal direction and causing the vacuum zone to be poorly sealed.

[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 Fig. 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. Fig.21A , Fig.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] like Figure 23A-23C As shown, the lower support 310 and the heat preservation door 250 are independently arranged, and a limiting portion for limiting the position of the lower support 310 is provided on the lower side of the mounting hole 201, and one end of the lower support 310 abuts against the limiting portion, and the other end abuts against the heat preservation door 250. The heat preservation door 250 can be installed on the door body 200 using the locking device 400 in Example 1 or Example 2.

[0091] Example 4

[0092] The structure of the present embodiment 4 is basically the same as that of the embodiment 1, and 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 Fig. 22 As shown in FIG. 23 , in order to ensure the aesthetic appearance of the refrigerator door 200 and to prevent the vacuum packaging device 300 from being exposed outside the door 200, the door 200 is provided with a sub-door plate 280 at the area where the vacuum packaging device 300 is located. The sub-door plate 280 has the same width as other areas of the door 200. The sub-door plate 280 is connected to this area by snapping or bonding, and the surface of the sub-door plate 280 is flush with the surface of other areas of the door 200. The sub-door plate 280 is formed with an insertion port 281, and the lower surface of the insertion port 281 is flush with the upper surface of the first opening cavity 311. When the user performs vacuum plastic sealing, the storage bag opening can be directly inserted from the insertion port 281 of the sub-door plate 280, 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 zone 301. The auxiliary door panel 280 is also provided with a display control device 282, which includes an indicator 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 to extract the storage bag according to the working state of the vacuum packaging device 300 displayed by the indicator device.

[0094] Example 5

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

[0096] Specifically, Figure 26-Figure 2 As shown in FIG. 9 , in this embodiment, the lower support 310 is detachably mounted 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 pushing and launching. Fig. 27 , Fig.28 As shown, a second push-to-pop switch 380 is arranged on the connecting surface between the lower support 310 and the door body 200, and the second push-to-pop switch 380 includes a push-to-pop lock 381 and a lock buckle 382; a groove for setting the lock buckle 382 is formed on the inner side surface of the lower support 310, and the push-to-pop lock 381 is fixed on the outer surface of the door body 200.

[0098] like Fig.29A As shown, when the lower support 310 is pushed in the vertical direction of the door body 200, the push lock 381 is engaged with the lock buckle 382, ​​and the lower support 310 is installed on the door body 200; Fig.29B As shown, when the lower support 310 is pushed again, the push-up lock 381 releases the lock catch 382, ​​so that the lower support 310 can be removed 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] Example 6

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

[0101] Specifically, in this embodiment, if Fig. 30A , Fig. 30B As shown, the lower support 310 is detachably mounted 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 a 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, wherein the first snap connection portion 391 is formed on the lower surface of the lower support 310, specifically a bending hook, and the second snap connection portion 392 is fixedly connected to the front surface of the door body 200. The lower support 310 is moved inwardly toward 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; when disassembling, 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 separate the two, and the user can clean the lower support 310 separately, which is convenient for user operation.

[0103] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A refrigerator, comprising a storage chamber and a door for opening or closing the storage chamber, wherein the door comprises a door shell and a door inner shell, and a vacuum packaging device is provided on the door, characterized in that: The vacuum packaging device comprises: The upper support and the lower support, the upper support can move towards or away from the lower support when driven by the driving device; the upper support and the lower support are connected to each other to form a vacuum zone and a packaging zone, the vacuum zone is used to vacuum the storage bag plugged therein, and the packaging zone is used to heat and plastic-seal the storage bag plugged therein; A vacuum pumping component, the vacuum pumping component is connected to the vacuum pumping area through a pipeline, and is used to vacuum or relieve the pressure of the vacuum pumping area; Wherein, the door body is provided with a small heat preservation door on one side of the door body liner, the lower support is detachably connected to the door body through the small heat preservation door, and the small heat preservation door is connected to the door body liner through a locking device; The heat preservation small door is arranged on the inner side of the lower support toward the storage chamber, and a mounting hole communicating the inside and the outside is arranged on the door body, and the lower support and the heat preservation small door are plugged into the mounting hole from the inner side of the door body; The lower support is integrally formed with the heat-insulating small door, and the lower support and the heat-insulating small door are formed by a first shell body having an open cavity structure and a second shell body and a heat-insulating member arranged between the first shell body and the second shell body; the first shell body is provided with an extension arm in a direction away from the second shell body, and the lower support is formed on the extension arm; A small door seal is provided between the heat-insulating small door and the door body liner.

2. The refrigerator according to claim 1, characterized in that: The first shell is snap-connected to the second shell.

3. The refrigerator according to claim 1 or 2, characterized in that: The locking device includes: a locking hook assembly arranged on the thermal insulation door, and a locking groove arranged on the door body. The locking hook assembly includes a locking hook passed through the thermal insulation door, and the locking hook can be switched between a first position and a second position. When the locking hook is in the first position, it can cooperate with the locking groove to achieve locking of the thermal insulation door. When the locking hook is in the second position, it disengages from the locking groove to achieve unlocking of the thermal insulation door.

4. The refrigerator according to claim 3, characterized in that: The locking groove is arranged on the lower side of the mounting hole, and the locking hook assembly includes a locking hook, a middle part of which is connected to the heat-insulating door through a hinge shaft, and also includes a reset torsion spring sleeved on the hinge shaft; the torsion of the reset torsion spring is suitable for the locking hook to be in the first position cooperating with the locking groove.

5. The refrigerator according to claim 3, characterized in that: The locking grooves are respectively located at the upper and lower sides of the mounting hole, the locking hook assembly includes an upper locking hook, a lower locking hook and a reset spring, the upper locking hook includes a hooking portion cooperating with the locking groove on the upper side and an upper connecting portion connected to the lower locking hook, the lower locking hook includes a hooking portion cooperating with the locking groove on the lower side, a hinge portion rotatably connected to the heat-insulating door, a handle portion located at the lower side of the heat-insulating door, and a lower connecting portion connected to the upper locking hook; the reset spring is arranged between the upper locking hook and the upper end surface of the heat-insulating door.

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