A refrigerator

Abstract

The present invention discloses a refrigerator. A vacuum packaging device is provided on the door body of the refrigerator. The vacuum packaging device includes a vacuum pumping area and a packaging area arranged from the inside to the outside. The open ends of the storage bags are respectively inserted into the vacuum pumping area and the packaging area. The vacuum pumping area performs vacuum pumping treatment on the storage bags, and the packaging area is used for plastic packaging treatment of the storage bags. It further includes a vacuum pumping assembly, and the vacuum pumping assembly is installed on a mounting seat. The vacuum pumping assembly includes: a vacuum pump, and the vacuum pump is communicated with the vacuum pumping area through a pipeline. A vibration damping member is provided between the vacuum pump and the mounting seat. The refrigerator of the present invention can perform vacuum packaging treatment on the storage bags containing food ingredients; it can perform vacuum pumping and fresh-keeping treatment on the food ingredients stored in various compartments of the refrigerator, expanding the fresh-keeping range. At the same time, by providing a first vibration damping member between the vacuum pump and the mounting seat, the noise and vibration during the operation of the vacuum packaging device can be reduced.

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 reach the requirements for microbial 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 outside the drawer is used to evacuate the drawer to keep the drawer in a negative pressure state, realizing the preservation of the food materials in the drawer. This preservation method has the following limitations: 1. Since the evacuation process needs to be realized through a vacuum pump, the vacuum pump will occupy 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 materials in the drawer and cannot play a preservation role for the food materials 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 refrigerators have unsatisfactory preservation effects, and further to propose a refrigerator with low cost, no occupation of storage space and capable of preserving food materials in each area.

[0006] To solve the above technical problem, the present invention discloses a refrigerator, including 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 is characterized in that: the vacuum packaging device includes a vacuum pumping area and a packaging area arranged from inside to outside. The open ends of the storage bags are respectively inserted into the vacuum pumping area and the packaging area. The vacuum pumping area evacuates the storage bags, and the packaging area is used for plastic-sealing the storage bags; a vacuum pumping component for evacuating the vacuum pumping area, and the vacuum pumping component is installed on a mounting seat; the vacuum pumping component includes: a vacuum pump, and the vacuum pump is communicated with the vacuum pumping area through a pipeline; a vibration damping member is provided between the vacuum pump and the mounting seat.

[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 fresh-keeping treatment on the food ingredients stored in various compartments of the refrigerator, expanding the fresh-keeping range; in addition, a first shock-absorbing member is provided between the vacuum pump and the mounting seat in the vacuum pumping assembly of the vacuum packaging device, which can reduce the noise and vibration during the operation of the vacuum packaging device, and the user experience is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The preferred embodiments of the present invention will be described in detail below with reference to 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 driving device and the vacuum pumping assembly in the vacuum packaging device of the present invention;

[0016] Figure 7 is 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 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 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 is a three-dimensional view of the vacuum pump in the vacuum packaging device of the present invention;

[0020] Figure 11 is a sectional view of the silencer in the vacuum packaging device of the present invention;

[0021] Figure 12 This is an exploded view of the mounting base and the pipeline connector in the vacuum packaging device of the present invention;

[0022] Figure 13 This is an exploded view of the upper support, the heating device and the sealing ring of the present invention;

[0023] Figure 14 This is a partial cross-sectional view of the connection between the upper support and the heating device of the present invention;

[0024] Figure 15 This is a schematic diagram of the connection relationship between the upper support and the driving device when the upper support of the present invention is in the initial position;

[0025] Figure 16 This is a schematic diagram of the connection relationship between the upper support and the driving device when the upper support of the present invention is in the descending position;

[0026] Figure 17A This is a schematic diagram of the structure of the lower support, the heat preservation small door and the door body in the locked state in Embodiment 1 of the present invention;

[0027] Figure 17B This is a schematic diagram of the structure of the lower support, the heat preservation small door and the door body in the unlocked state in Embodiment 1 of the present invention;

[0028] Figure 17C This 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;

[0029] Figure 18 This 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;

[0030] Figure 19 This is an exploded view of the heat preservation small door, the lower support and the lock hook assembly in Embodiment 1 of the present invention;

[0031] Figure 20 This 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;

[0032] Figure 21 This 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;

[0033] Figure 22 This is a three-dimensional view of the lower lock hook in Embodiment 1 of the present invention;

[0034] Figure 23 This is a front and reverse structure schematic diagram of the upper lock hook in Embodiment 1 of the present invention;

[0035] Figure 24A This is a schematic diagram of the structure of the lower support, the heat preservation small door and the door body in the locked state in Embodiment 2 of the present invention;

[0036] Figure 24B It is a schematic structural diagram of the lower support and the heat preservation small door being removed from the door body in Embodiment 2 of the present invention;

[0037] Figure 25 It is an exploded view of the heat preservation small door, the lower support and the lock hook assembly in Embodiment 2 of the present invention;

[0038] Figure 26A It is a schematic structural diagram of the lower support and the heat preservation small door and the door body in the locked state in Embodiment 3 of the present invention;

[0039] Figure 26B It is a schematic structural diagram of the heat preservation small door and the door body in the unlocked state in Embodiment 3 of the present invention;

[0040] Figure 26C It is a schematic structural diagram of the lower support and the heat preservation small door being removed from the door body in Embodiment 3 of the present invention;

[0041] Figure 27 It is a schematic structural diagram of the refrigerator in Embodiment 4 of the present invention;

[0042] Figure 28 It is an exploded view of the refrigerating door body in Embodiment 4 of the present invention;

[0043] Figure 29 It is a schematic structural diagram of the refrigerator in Embodiment 5 of the present invention;

[0044] Figure 30 It is an exploded view of the refrigerating door body in Embodiment 5 of the present invention;

[0045] Figure 31 It is an exploded view of the lower support in Embodiment 5 of the present invention;

[0046] Figure 32A It is a schematic structural diagram of the lower support and the door body in the locked state in Embodiment 5 of the present invention;

[0047] Figure 32B It is a schematic structural diagram of the lower support in the state of being removed from the door body in Embodiment 5 of the present invention;

[0048] Figure 33A It is a schematic structural diagram of the lower support and the door body in the locked state in Embodiment 6 of the present invention;

[0049] Figure 33B It is a schematic structural diagram of the lower support in the state of being removed from the door body in Embodiment 6 of the present invention. Detailed implementation manners

[0050] The technical solution of the present invention will be clearly and completely described below in conjunction with 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. It is 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 therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "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 circumstances.

[0052] 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.

[0053] Embodiment 1

[0054] Figure 1 is a perspective view of a specific embodiment 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 an insulating 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 insulating layer is filled with foaming material.

[0055] 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.

[0056] 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 plastic-seal a storage bag; the vacuum packaging device 300 can be provided on the freezer door body 200A or on the refrigerating door body 200B. Since the refrigerating door body 200B is located on the upper side, in order to conform to the user's usage habits, it is usually preferably provided on the refrigerating door body 200B.

[0057] As Figures 4 - 1 Figure 7 shows 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 and the second open cavity 321 are docked and sealed 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.

[0058] Specifically, in order to improve the sealing performance of the vacuum extraction area 301, as Figure 4 shown, sealing parts for sealing the vacuum extraction area 301 are provided on the opposite surfaces of the lower support 310 and the upper support 320. Specifically, 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 provided 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.

[0059] Specifically, as Figure 5As shown, a limiting portion is provided in the first open cavity 311 or the second open cavity 321 for restricting 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 portion 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 may 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 setting the position detection device, it is possible to automatically detect whether the storage bag is in place, and the controller can then automatically control the on / off of the vacuum pump.

[0060] 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 gas balance 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 gas balance device 333 is specifically an electric balance valve. When the electric balance valve is opened, the vacuum extraction area 301 is communicated with the outside. When the user performs vacuum extraction and 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 setting 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, by opening the above-mentioned electric balance valve, the vacuum extraction area 301 can be communicated with the outside, and the air pressure rises to the standard atmospheric pressure, facilitating the user to take out the storage bag.

[0061] 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 a pipeline, and the outlet is communicated with the vacuum pump 331 through a pipeline. 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 that the sealing performance of the pipeline 335 deteriorates due to frequent disassembly and assembly of the pipeline 335.

[0062] 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 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, assembled or cleaned from the lower side. 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 vacuum pumping failure, the connection holes can also be arranged in two or more to be respectively connected with the pipeline 335. The pipelines 335 are arranged in parallel and connected to the main pipeline through a tee or multi-way connector; the pressure sensor and the electronic balance valve are arranged on the main pipeline.

[0063] When the vacuum pump operates, it will generate relatively large vibration noise, bringing a bad user experience. Since the noise generated during the operation of the vacuum pump 331 is mainly caused by the vibration of the vacuum pump 331 hitting the outer mounting seat 305, to solve this problem, as Figure 6 、 Figure 7 shown, a first vibration damping member 331A is provided between the vacuum pump 331 and the mounting seat 305. The first vibration damping member 331A is made of a flexible material, such as damping sponge, etc.

[0064] The vacuum pump 331 includes a square pump body part 3311 and a cylindrical motor part 3312; the first vibration damping member 331A is a damping sleeve sleeved on the pump body part 3311.

[0065] As Figure 12As shown, the mounting base 305 includes: a base body, on which a vacuum pump mounting cavity 3051 for mounting the vacuum pump is formed; and a cover body 306, which is connected to the base body 305 to close the vacuum pump mounting cavity 3051. Among them, a number of protruding ribs 3051A are formed on the inner wall of the cover body 306 and the vacuum pump mounting cavity 3051, and the first damping sleeve is in contact with the ribs 3051A.

[0066] Since a large amount of noise is generated when the vacuum pump exhausts, affecting the user experience, in order to further reduce the noise when the vacuum pump exhausts, a silencer 339 is also provided on the mounting base 305, and the air inlet 3393 of the silencer 339 is communicated with the exhaust port of the vacuum pump 331.

[0067] Specifically, as Figure 11 shown, the silencer 339 includes a first connecting member 3391 and a second connecting member 3392. The first connecting member 3391 and the second connecting member 3392 are connected to form a sound absorption cavity 339A. The sound absorption cavity 339A includes a first part with a larger cross-section and a second part with a smaller cross-section. The air inlet 3393 of the silencer is provided on the first part, and the exhaust port 3394 of the silencer is not on the same surface as the air inlet.

[0068] The first connecting member 3391 is a square box body with an opening, and the second connecting member 3392 is a cylindrical body with an opening. An extension edge is provided at the opening end of the cylindrical body. The square box body is disposed opposite to the opening end of the cylindrical body, and the extension edge is connected to the inner wall of the square box body in a matching manner. Among them, the air inlet 3393 of the silencer 339 is provided on the wall surface of the square box body opposite to the opening end, and the exhaust port 3393 of the silencer 339 is provided on the wall surface of the square box body adjacent to the opening end. The gas discharged by the vacuum pump 331, as the carrier of the vacuum pump sound source, carries sound waves into the sound absorption cavity 339A. Since the cross-sectional area of the sound absorption cavity 339A is changing, larger at the lower part and smaller at the upper part, some sound waves are affected by the change in cross-sectional area during movement in the sound absorption cavity 339A, which will cause the frequency of the sound waves to change to the opposite of the original inherent sound wave frequency and thus cancel each other out and be converted into heat energy, thereby achieving the sound absorption effect.

[0069] Specifically, as Figure 6 、 Figure 7As shown, the driving device 340 and the vacuum pumping assembly 330 are both installed on the mounting seat 305 located above the upper support 320. The upper support 320 is provided with a vent hole 324 for communicating with the vacuum pumping assembly 330. Among them, the body of the mounting seat 305 is provided with a vacuum pump installation cavity 3051 at the middle position, driving device installation cavities 3052 on the left and right sides of the vacuum pump installation cavity 3051, a filter container installation cavity 3053 below the vacuum pump installation cavity 3051; a silencer installation cavity 3054 above the vacuum pump installation cavity 3051, and other component installation cavities 3055 above one of the driving device installation cavities 3052. The other component installation cavities 3055 are used for installing an electric balance valve, a pressure sensor, etc.

[0070] In order to further reduce the vibration of the silencer 339, a second vibration damping member is provided between the silencer 339 and the silencer installation cavity 3054. The second vibration damping member is made of a flexible material, such as damping sponge, etc.

[0071] Since each component in this vacuum pumping assembly: the vacuum pump 331, the pressure sensor 332, the gas balance device 333, and the filter protection device 334 need to be connected through pipelines 305; and in order to achieve modular assembly, these components need to be assembled integrally on the mounting seat 305; therefore, in order to make the pipeline connection between the vacuum pumping assemblies installed in the mounting seat 305 more reasonable and easier during pipeline assembly on a mounting seat with a relatively compact structure, a pipeline connector is provided on the pipeline. Specifically, the pipeline connector is a four-way connector 308A. One path of the four-way connector 308A is connected to the air extraction port of the vacuum pump 331, one path is connected to the pressure sensor 332, one path is connected to the electric balance valve 333, and one path is connected to the filter container 334; among them, a slide rail is provided between the four-way connector 308A and the mounting seat 305, and the four-way connector 308A is slidably inserted on the mounting seat 305.

[0072] Specifically, as Figure 12 shown, the mounting seat 305 is formed with a reinforcing rib 3056 having an opening. The reinforcing rib 3056 is provided with a sliding protrusion or a sliding groove in the thickness direction of the mounting seat 305 at the opening; the four-way connector 308A includes a plate body 3381 and insertion ports 3382 respectively provided on both sides of the plate body; the plate body 3381 is correspondingly provided with a sliding groove or a sliding protrusion in the thickness direction of the mounting seat 305.

[0073] When installing the pipeline 305 of the vacuum pumping assembly 330, first install the vacuum pump 331, the pressure sensor 332, the gas balance device 333, and the filter protection device 334 at their corresponding installation positions on the mounting base 305; then insert the four pipelines into the four insertion ports 3382 of the four-way connector 338A, and then insert the plate body 3381 of the four-way connector 338A into the opening of the reinforcing rib 3056. The free ends of the respective pipelines 305 are communicated with the air extraction port of the vacuum pump 331, the pressure sensor 332, the electric balance valve 333, and the outlet of the filter container 334, so as to complete the installation of the entire vacuum pumping assembly, with a compact structure and convenient assembly.

[0074] To perform vacuum pumping on the vacuum tank, as Figure 7 shown, a vacuum tube connector 337 is further provided on the mounting base 305 and is communicated with the vacuum pumping assembly through a pipeline. When the user performs vacuum pumping on the vacuum tank, the vacuum tank is inserted into the vacuum tube connector 337 through a connecting pipe, and the vacuum pump 331 is turned on for vacuum pumping. When the pressure detection device 332 detects that the pressure in the pipeline reaches the set negative pressure value, the vacuum pump 331 is controlled to stop.

[0075] Since the vacuum pumping interface 337 is directly communicated with the filter container 334 through the pipeline 305, but since they are in two different chambers, a pipeline connector 338B for connecting the pipelines between the vacuum pumping interface 337 and the filter container 334 is further included in the mounting base 305. The pipeline connector 338B includes a plate body 3381 and insertion ports 3382 respectively formed on both sides of the connecting plate body. One end of the insertion port 3382 is communicated with the vacuum pumping interface 337 through a pipeline; the other end is communicated with the filter container 334 through a pipeline.

[0076] Since there are many pipeline components in the mounting base, to make the pipeline connections between the respective vacuum pumping assemblies more reasonable and orderly and avoid chaotic pipelines; two pipeline connectors are inserted from the inside to the outside at the opening of the partition rib 3056, wherein the width of the inner opening is smaller than that of the outer opening. During installation, first insert the two-way connector 338B into the opening with a smaller width; after connecting the pipelines of the two-way connector 338B, then connect the four-way connector 338A to the outer opening, and then perform pipeline connection. By adopting the method of a narrow inner opening and a wide outer opening, a limiting structure for the pipeline connector is formed, which can enable better positioning of the two pipeline connectors. At the same time, the entire device has a simple structure and convenient installation.

[0077] 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 3As shown, the door body housing 210 is provided with an inwardly recessed mounting cavity 211. After the driving device 340 is connected to the upper support 320, it is connected to the mounting seat 305 by screws. The vacuum pumping assembly 330 is connected to the vent hole 324 on the upper support 320 and then mounted on the mounting seat 305. After connecting the cover body 306 to the vacuum pump mounting cavity 3051 to form an assembly, the side of the mounting seat 305 with the cavity faces the door body housing 210, and the whole is mounted in the mounting cavity 211 by screws passing through the lugs on both sides of the mounting seat 305. Each component realizes modular assembly, and each part is not exposed on the outer surface, so the integrity of the device is better. 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 a heat insulation pad 360 and a heating device 370 arranged oppositely; specifically, the heating device 370 is installed in the groove on the lower surface of the upper support 320; the heat insulation pad 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 form a sealed vacuum pumping area 301 with the lower support 310, the heat insulation pad 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 setting the working duration 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.

[0078] More specifically, as Figure 13 、 Figure 14 shown, the heating device 370 includes a heating wire 371. A heat conducting plate 373 is arranged below the heating wire 371, which is used to spread 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 by 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 by springs 375; by arranging the springs 375, the heating wire 371 can always be in a tensioned state, so that the flatness of the heating wire 371 is relatively high, 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 heating wire 371 is not flat, resulting in non-contact at individual positions and inability to plastic-seal.

[0079] In the above vacuum encapsulation 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 15 and Figure 16 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. 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 through 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.

[0080] Specifically, as Figure 7 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 pin holes are respectively provided on the guiding groove 3471 and the lower end of the output rack 345. The pin shaft 346 penetrates 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.

[0081] As Figure 15 shown, in the initial position, the upper support 320 is located at the highest position; in the pressing stage, as Figure 16 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 can enable the upper support 320 to continue to move downward for a certain distance after moving down to contact the lower support 310, so that the elastic body 348 is compressed, preventing the motor 341 from stalling, playing a protective role for the motor 341, and enabling the pressing force to be kept stable.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] Vacuum pump installation cavity 3051 When the user uses the vacuum packaging device 300 to plastic-seal a food bag, especially when plastic-seals powdered food such as flour or liquid, 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.

[0086] There are many ways to install the lower support 310 on the door body 200. Figures 17A - 17C 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. Figure 17CAs shown, an installation hole 201 communicating inside and outside is formed on the door body 200. The lower support 310 and the heat preservation 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 preservation performance of the door body 200 at the same time.

[0087] In one implementation, as Figure 18 shown, the lower support 310 and the heat preservation small door 250 are integrally formed; as Figure 19 、 Figure 20 shown, the lower support 310 and the heat preservation small door 250 are formed by a first housing 251 and a second housing 252 having an open cavity structure and a heat insulating member disposed between the first housing 251 and the second housing 252. Among them, the first housing 251 and the second housing 252 are snap-connected. The first housing 251 is provided with an extension arm 2511 in a direction away from the second housing 252. The lower support 310 is formed on the extension arm 2511. The first open cavity 311 is an opening groove formed on the upper side of the extension arm 2511, and a first sealing groove 313 is provided on the outer periphery of the opening groove.

[0088] 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 preservation small door 250, as Figure 18 、 Figure 19 shown, a small door seal 253 is provided between the heat preservation small door 250 and the inner door liner 220 of the door body. Specifically, the first housing 251 is provided with a support arm 2512 at a position where it cooperates with the inner door liner 220 of the door body. 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, and the small door seal 253 is installed in the installation groove.

[0089] Specifically, to ensure that the heat preservation small door 250 is reliably fixed on the door body 200, a locking device 400 is provided between the heat preservation small door 250 and the inner door liner 220 of the door body. The locking device 400 is used to lock or unlock the heat preservation small door 250 on the door body 200.

[0090] As Figures 17A - 17C 、 Figure 18 、 Figure 19As shown, the locking device 400 includes a locking hook assembly disposed on the heat preservation small door 250 and a locking slot 221 disposed on the inner liner 220 of the door body. The locking hook assembly includes a locking hook penetrating through the heat preservation small door 250. 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 slot 221 to lock the heat preservation small door 250. When the locking hook is in the second position, it disengages from the locking slot 221 to unlock the heat preservation small door 250.

[0091] Specifically, in order to improve the reliability of the locking device 400, two locking slots 221 and locking hooks are respectively provided. Among them, the locking slots 221 are located on the upper and lower sides of the mounting hole 201. As Figures 18 - 23 shown, the locking hook assembly includes an upper locking hook 420, a lower locking hook 410 and a return spring 430. As Figure 22 shown, the lower locking hook 410 includes a hooking portion 414 that cooperates with the lower locking slot 221, a hinged portion 412 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, and 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 upper locking slot 221 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 slot structure 4231, and the T-shaped protrusion 4131 is inserted into the open slot 4231 to connect the upper locking hook 420 and the lower locking hook 410. A return spring 430 is disposed 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.

[0092] As Figure 20 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.

[0093] 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 at the first position to lock the heat preservation small door 250 and the inner liner 220 of the door body; when the user manually operates the lower locking hook 410, the lower locking hook 410 rotates around the hinge portion 412, and the hook portion 414 moves downward to disengage from the lower locking groove 221. At the same time, the connecting portion pushes the upper locking hook 420 upward, and the upper locking hook 420 disengages from the upper locking groove 221. 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 liner 220 of the door body.

[0094] 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 spring switch 212. With the structure of the bar door 260, 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.

[0095] The inner side of the bar door 260 further includes an operation panel 270 covering the outside of the installation cavity. An insertion interface 271 is formed on the operation panel 270, and the lower surface of the insertion interface 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 interface 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.

[0096] 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 the insertion is in place (the storage bag abuts against the limiting rib 322), the user triggers the start button on the operation panel 270, and the motor 341 starts. 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 vacuum pumped 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 the heating device 370 is started to work. After the heating device 370 works for a set time, the electric balance 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 to the user that the storage bag can be taken out, and the vacuum packaging of the storage bag is completed.

[0097] Embodiment 2

[0098] The structure of this Embodiment 2 is basically the same as that of Embodiment 1, except for the connection manner between the lower support 310 and the heat preservation small door 250. Specifically, in this embodiment, with reference to Figure 24A 、 Figure 24B as shown, the lower support 310 is detachably connected to the heat preservation small door 250. As Figure 25 shown, the heat preservation small door 250 is formed by a first shell 251 and a second shell 252 having an open cavity structure and a heat insulating member provided 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 the direction away from the second shell 252, and the lower support 310 is detachably connected to the extension arm 2511.

[0099] 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.

[0100] 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.

[0101] 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 .

[0102] like Figure 25 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.

[0103] 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 24A , Figure 24B 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.

[0104] Example 3

[0105] 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.

[0106] As Figures 26A - 26C shown, 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.

[0107] Embodiment 4

[0108] 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.

[0109] Specifically, in this embodiment, referring to Figure 27 、 Figure 28 shown, 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 means of snap connection or bonding. The surface of the secondary door panel 280 is flush with the surfaces 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 extended 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.

[0110] Embodiment 5

[0111] 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.

[0112] Specifically, as Figures 29 - 31 shown, in this embodiment, the lower support 310 is detachably installed on the door body 200 from the outside of the door body 200.

[0113] More specifically, the lower support 310 is detachably connected to the door body 200 by means of pushing and ejecting. Among them, as Figure 30 and Figure 31 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.

[0114] As Figure 32A shown, when the lower support 310 is pushed along the vertical direction of the door body 200, the push and eject lock 381 is engaged with the lock catch 382, and the lower support 310 is installed on the door body 200; as Figure 32B 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 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.

[0115] Embodiment 6

[0116] 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.

[0117] Specifically, in this embodiment, as Figure 33A and Figure 33B shown, the lower support 310 is detachably installed on the door body 200 from the outside of the door body 200.

[0118] 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. When 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 are engaged, the installation of the lower support 310 is realized; when disassembling, the lower support 310 is pulled outward, and the first snap connection portion 391 and the second snap connection portion 392 elastically deform to disengage from each other. The user can clean the lower support 310 separately, which is convenient for the user to operate.

[0119] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill 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 enumerate all implementation manners here. And the obvious changes or modifications 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 and a door body inner liner, and a vacuum packaging device being provided on the door body, characterized in that: The vacuum packaging device includes an evacuated area and a packaging area arranged from the inside to the outside. The open ends of the storage bags are respectively inserted into the evacuated area and the packaging area. The evacuated area evacuates the storage bags, and the packaging area is used for plastic-sealing the storage bags. An evacuation assembly for evacuating the evacuated area, the evacuation assembly being mounted on a mounting seat; the evacuation assembly includes a vacuum pump, and the vacuum pump is connected to the evacuated area through a pipeline; a first shock absorber is provided between the vacuum pump and the mounting seat. The vacuum packaging device further includes an upper support and a lower support. The upper support can move in a direction approaching or away from the lower support under the drive of a driving device; the opposite surfaces of the upper support and the lower support form an evacuated area and a packaging area after docking. Wherein, a heat-insulating small door is provided on one side of the inner liner of the door body. The lower support is detachably connected to the door body through the heat-insulating small door, and the heat-insulating small door and the inner liner of the door body are connected through a locking device. The heat-insulating small door is provided on the inner side part of the lower support facing the storage chamber. An installation hole communicating inside and outside is formed on the door body, and the lower support and the heat-insulating small door are inserted into the installation hole from the inner side of the door body. The lower support and the heat-insulating small door are integrally formed. The lower support and the heat-insulating small door are formed by a first shell and a second shell having an open cavity structure and a heat-insulating member provided 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 small door seal is provided between the heat-insulating small door and the inner liner of the door body.

2. The refrigerator according to claim 1, characterized in that: The mounting seat includes a seat body, and a vacuum pump installation cavity for installing the vacuum pump is formed on the seat body; and a cover body, the cover body is connected to the seat body for closing the vacuum pump installation cavity; wherein, a plurality of protruding ribs are formed on the inner wall of the cover body and the vacuum pump installation cavity, and the first shock absorber contacts the ribs.

3. The refrigerator according to claim 1, characterized in that: The vacuum pump includes a pump body part and a motor part, and the outer peripheral dimension of the motor part is smaller than the outer peripheral dimension of the pump body part. The first shock absorber is a flexible shock-absorbing sleeve sleeved on the pump body part.

4. The refrigerator according to any one of claims 1 to 3, characterized in that: A silencer is further provided on the mounting seat, and the air inlet of the silencer is communicated with the exhaust port of the vacuum pump.

5. The refrigerator according to claim 4, characterized in that: A silencer installation cavity is formed on the seat body, and a second shock absorber is provided between the silencer and the silencer installation cavity.

6. The refrigerator according to claim 5, wherein: The silencer includes a first connecting member and a second connecting member, and the first connecting member and the second connecting member are connected to form a sound-absorbing cavity. The sound-absorbing cavity includes a first part with a larger cross-section and a second part with a smaller cross-section. The air inlet of the silencer is provided on the first part, and the exhaust port of the silencer and the air inlet are not on the same surface.

7. The refrigerator according to claim 6, characterized in that: The first connecting member is a square box body with an opening, the second connecting member is a cylindrical body with an opening, an extending edge is provided at the opening end of the cylindrical body, the square box body is disposed opposite to the opening end of the cylindrical body, and the extending edge is cooperatively connected with the inner wall of the square box body. Wherein, the air inlet of the silencer is disposed on the wall surface of the square box body opposite to the opening end, and the air outlet of the silencer is disposed on the wall surface of the square box body adjacent to the opening end.

8. The refrigerator according to claim 1, characterized in that: The upper support and / or the lower support are provided with open cavities on their opposite surfaces. The upper support can move in a direction approaching or departing from the lower support under the drive of a driving device. When the upper support moves in a direction approaching the lower support until the upper support is docked with the lower support, the open cavity is sealed by a sealing portion to form the vacuum pumping area; the encapsulation area is formed on the two mating surfaces of the upper support and the lower support that are disposed opposite to each other; wherein, one of the upper support and the lower support is provided with a heating device; and the other of the upper support and the lower support is provided with a heat insulation pad at a position corresponding to the heating device.

9. The refrigerator according to claim 8, characterized in that: The lower support is detachably connected to the door body, and the vacuum pumping assembly is communicated with the upper support through a pipeline.

10. The refrigerator according to claim 8, characterized in that: The mounting seat is further used for mounting the driving device. The door body housing is provided with an inwardly recessed mounting cavity, and the mounting seat is mounted in the mounting cavity.

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