A refrigerator

Abstract

The present invention discloses a refrigerator, which includes a storage chamber and a door body for opening or closing the storage chamber. The door body includes a door body outer shell, a door body inner liner, an upper end cover, and a lower end cover. An installation cavity is formed on the door body outer shell, and a vacuum pumping assembly is provided in the installation cavity. The vacuum pumping assembly includes a vacuum pump. A bar door is provided at the opening of the installation cavity of the door body, and the lower end of the bar door is hinged to the door body. The bar door includes a bar door inner plate and a bar door outer plate. An air extraction pipe joint is provided on the bar door inner plate and / or the bar door outer plate. The air extraction pipe joint is communicated with the vacuum pump through an air extraction pipe. A cavity for accommodating the air extraction pipe is formed between the bar door inner plate and the bar door outer plate. The refrigerator of the present invention can perform vacuum packaging treatment on a sealed jar containing food ingredients; it can perform vacuum fresh-keeping treatment on food ingredients stored in various compartments of the refrigerator, expanding the fresh-keeping range.

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 storing food, food preservation storage has become a technical need to be urgently 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, and 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 in the drawer. This preservation method has the following limitations: 1. Since the evacuation process needs to be achieved through a vacuum pump, the vacuum pump will occupy part of the storage space in the refrigerating compartment; 2. This preservation method requires the drawer to be sealed, otherwise a vacuum state cannot be formed inside the drawer. Therefore, higher requirements are put forward for the forming and assembly processes of the drawer; 3. This preservation method can only preserve the food in the drawer and cannot play a preservation role for the food in other areas of the refrigerator. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing refrigerator has an unsatisfactory preservation effect, and further provides a refrigerator with a low cost, no occupation of storage space, and capable of preserving food 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. The door body includes a door body outer shell, a door body inner liner, an upper end cover, and a lower end cover; an installation cavity is formed on the door body outer shell, and a vacuum extraction assembly is arranged in the installation cavity. The vacuum extraction assembly includes a vacuum pump; a bar door is arranged at the opening of the installation cavity of the door body, and the lower end of the bar door is hinged to the door body; the bar door includes a bar door inner plate and a bar door outer plate, and an air extraction pipe joint is arranged on the bar door inner plate and / or the bar door outer plate. The air extraction pipe joint is communicated with the vacuum pump through an air extraction pipe, and a cavity for accommodating the air extraction pipe is formed between the bar door inner plate and the bar door outer plate.

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

[0008] In the refrigerator of the present invention, an installation cavity is formed on the door body. A vacuum pumping assembly is provided in the installation cavity, and a bar door for opening or closing the installation cavity is further included. An air extraction pipe joint is formed on the bar door, and the air extraction pipe joint is communicated with the vacuum pump through an air extraction pipe. Users can perform vacuum pumping treatment by inserting one end of a connecting pipe into the air extraction pipe joint and the other end into a sealed tank body with a socket; with the structure of the present invention, the food materials placed in the sealed tank body can be subjected to vacuum fresh-keeping treatment, expanding the fresh-keeping range. 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 an exploded view of the connection manner between the bar door and the door body according to Embodiment 1 of the present invention;

[0014] Figure 5 is a cross-sectional view of the cooperation structure between the bar door and the door body according to Embodiment 1 of the present invention;

[0015] Figure 6 is Figure 5 a partial enlarged view of A in

[0016] Figure 7 is a side cross-sectional view of the vacuum packaging device of the present invention;

[0017] Figure 8 is a front and reverse structural schematic diagram of the upper support of the vacuum packaging device of the present invention;

[0018] Figure 9 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;

[0019] Figure 10 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;

[0020] Figure 11 is a connection relationship diagram of the upper support and the filter container in the vacuum packaging device of the present invention;

[0021] Figure 12 It is a connection relationship diagram of the upper support and the filter screen in the vacuum packaging device of the present invention;

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

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

[0024] Figure 15 It 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 It 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 lowered position;

[0026] Figure 17A It 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 It 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 It is a schematic diagram of the structure of the lower support and the heat preservation small door removed from the door body in Embodiment 1 of the present invention;

[0029] Figure 18 It is a front and reverse structure schematic diagram of the heat preservation small door and the lower support in the assembled state in Embodiment 1 of the present invention;

[0030] Figure 19 It 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 It is a schematic diagram of the structure of the lock hook assembly installed on the heat preservation small door in Embodiment 1 of the present invention;

[0032] Figure 21 It is a partial cross-sectional view of the lock hook assembly installed on the heat preservation small door in Embodiment 1 of the present invention;

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

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

[0035] Figure 24A It 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 view of the lower support and the heat preservation small door 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 view 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 view 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 view of the lower support and the heat preservation small door removed from the door body in Embodiment 3 of the present invention. Detailed implementation manners

[0041] Next, the technical solutions of the present invention will be clearly and completely described with reference to the accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. 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 thus 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 should not be construed as indicating or implying relative importance.

[0042] 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 situations.

[0043] 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.

[0044] Embodiment 1

[0045] Figure 1 It is a perspective view of a specific implementation manner of the refrigerator of the present invention; Refer to Figure 1, the refrigerator 1 of this embodiment has an approximately cuboid shape. The appearance of the refrigerator 1 is defined by a storage chamber 100 that defines a storage space and a plurality of door bodies 200 provided in the storage chamber 100. Among them, referring to Figure 2 , the door body 200 includes a door body outer shell 210 located outside the storage chamber 100, a door body inner liner 220 located inside the storage chamber 100, an upper end cover 230, a lower end cover 240, and a heat insulation layer located between the door body outer shell 210, the door body inner liner 220, the upper end cover 230, and the lower end cover 240; generally, the heat insulation layer is filled with foaming material.

[0046] The storage chamber 100 has an open box body, and the storage chamber 100 is vertically partitioned into a lower freezer compartment A and an upper refrigerating 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 chamber 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 refrigerating compartment 100B, and the refrigerating compartment 100B can be selectively opened or closed by a refrigerating compartment door body 200B pivotally mounted on the refrigerating compartment 100B.

[0047] As Figure 3 , Figure 4 shown, an installation cavity 211 is formed on the door body outer shell, and a vacuum pumping assembly 330 is provided in the installation cavity 211. The vacuum pumping assembly 330 includes a vacuum pump 331; a bar door 260 is provided on the door body 200 at the area where the installation cavity 211 is located, and the lower end of the bar door 260 is hinged to the door body 200; as Figure 5 shown, the bar door 260 includes a bar door inner plate 260A and a bar door outer plate 260B. A vacuum pipe joint 337 is formed on the bar door inner plate 260A and / or the bar door outer plate 260B. The vacuum pipe joint 337 is communicated with the vacuum pump 331 through a vacuum pipe 338, and a cavity for accommodating the vacuum pipe 338 is formed between the bar door inner plate 260A and the bar door outer plate 260B.

[0048] As Figure 6 shown, a switch valve 3371 is provided inside the vacuum pipe joint 337. The switch valve 3371 is used to close the vacuum pipe 338 in the initial state and open the vacuum pipe 338 after an external pipe is inserted into the vacuum pipe joint 337. The vacuum pipe 338 is introduced into the cavity from the hinged end of the bar door 260, and the end of the vacuum pipe 338 is inserted into the vacuum pipe joint 337.

[0049] The vacuum pumping assembly 330 further includes: a pressure detection device 332 and a gas balance device 333. The pressure detection device 332 is used to detect the pressure in the vacuum pumping pipe 338, and the gas balance device 333 is controlled to adjust the gas in the vacuum pumping pipe to communicate with the external gas. Among them, the pressure detection device 332 is specifically a pressure sensor; the gas balance device 333 is specifically an electric balance valve. When the user evacuates the sealed tank body with the insertion interface, one end of the connecting pipe is inserted into the insertion interface of the sealed tank body, and the other end is inserted into the vacuum pumping pipe joint 337. Turning on the vacuum pump 331 can perform the vacuum pumping process. 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.

[0050] As Figure 3 , Figure 7 shown, the door body 200 of the refrigerator is further provided with a vacuum packaging device 300, and the vacuum packaging device 300 is used for evacuating and plastic-sealing a storage bag; as Figure 7 shown, the vacuum packaging device 300 includes: a lower support 310, and the lower support 310 is provided with a first open cavity 311; an upper support 320, and the upper support 320 is provided with a second open cavity 321. The upper support 320 can move in a direction approaching or away from the lower support 310 under the drive of a drive device 340. After the upper support 320 moves in place in the direction approaching the lower support 310, the first open cavity 311 is docked and sealed with the second open cavity 321 to form a sealed cavity 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.

[0051] Specifically, in order to improve the sealing performance of the sealed cavity 301, as Figure 7 shown, a sealing portion for sealing the sealed cavity 301 is 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 arranged in the first sealing groove 313 and the second sealing groove 323 seal the sealed cavity 301 inside, realizing reliable sealing of the sealed cavity 301.

[0052] Specifically, as Figure 8As 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 sealed cavity 301 to prevent the opening position of the storage bag from extending out of the sealed cavity 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 sealed cavity 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 sealed cavity 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 sealed cavity 301, and then send a signal indicating whether the storage bag is in place to the controller. The controller can control the vacuum pump to start according to the in-place signal. By providing the position detection device, it can automatically detect whether the storage bag is in place, and the controller can then automatically control the on / off of the vacuum pump.

[0053] As Figure 9 , Figure 10 As shown, the vacuum pumping assembly 330 is communicated with the sealed cavity 301 through a pipeline. When the user performs vacuum packaging, the vacuum pump 331 is turned on to perform vacuum pumping on the sealed cavity 301. When the pressure detection device 332 detects that the pressure in the sealed cavity 301 reaches the set negative pressure value, the controller controls the vacuum pump 331 to stop. By providing the pressure sensor, the vacuum degree of the sealed cavity 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 pumping effect. After the vacuum pumping and packaging operations are completed, by opening the above-mentioned electric balance valve, the sealed cavity 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.

[0054] To prevent foreign objects in the sealed cavity 301 from entering the vacuum pump 331 through the pipeline, a filtering and protection device is also included in the pipeline. In one embodiment, as Figure 10 , Figure 11As shown, the filtering and protecting device is specifically a filtering container 334 connected in series on the pipeline. Two inlets and an outlet are provided at the upper end of the filtering container 334. One of the inlets is communicated with the sealed cavity 301, and the other inlet is communicated with the vacuum pumping pipe joint 337. The outlet is communicated with the vacuum pump 331 through a pipeline. Foreign matters enter the filtering container 334 through the pipeline 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 inlets and the outlet are arranged on the upper cover. During cleaning, the tank body can be removed for cleaning, avoiding the problem of poor pipeline sealing caused by frequent disassembly and assembly of the pipeline.

[0055] In another embodiment, as Figure 12 shown, the filtering and protecting device is a filter screen 336 arranged on the pipeline. Specifically, for the convenience of disassembly and assembly, the filter screen 336 is arranged at the position of the ventilation hole 324 at the connection position between the upper support 320 and the pipeline. 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.

[0056] Since a great deal of noise will be generated when the vacuum pump exhausts, affecting the user experience, to further reduce the noise during the vacuum pump exhaust, as Figure 9 、 Figure 10 shown, a silencer 339 is further arranged on the mounting seat 305. The air inlet 3393 of the silencer 339 is communicated with the exhaust port of the vacuum pump 331.

[0057] The connection hole between the sealed cavity 301 and the pipeline can be one. Of course, to avoid the problem that the connection hole is blocked by foreign matters in the sealed cavity 301 resulting in a vacuum pumping failure in the case of a single connection hole, the pipeline can also be connected through two or more connection holes respectively.

[0058] As Figure 7As shown, the vacuum packaging device 300 further includes a packaging device 302 located outside the sealed cavity 301. The packaging device 302 is used to perform plastic sealing on the storage bag after the vacuum pumping is completed. The packaging device 302 includes a heat insulation pad 360 and a heating device 370 arranged oppositely. Specifically, the heating device 370 is installed in a groove on the lower surface of the upper support 320; the heat insulation pad 360 is installed in a groove on the upper surface of the lower support 310 of the upper support 320. When the upper support 320 moves to form a sealed cavity 301 with the lower support 310, the heat insulation pad 360 in the packaging device 302 abuts against the heating device 370. After the vacuum pumping is completed, the heating device 370 of the packaging device 302 can quickly plastic-seal the storage bag. 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.

[0059] More specifically, as Figure 13 、 Figure 14 shown, the heating device 370 includes a heating wire 371. A heat conduction 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 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, covering the outside of the heating wire 371 to prevent the heating wire 371 from being exposed outside. Further, the two free ends of the heating wire 371 are respectively connected to two wires led out through a wiring terminal 374 through a spring 375. By setting the spring 375, the heating wire 371 can always be in a tensioned state, making the heating wire 371 have a high flatness, and the heat conduction plate 373 located below the heating wire 371 is in close contact with the storage bag, avoiding the problem that the heating wire 371 is not flat and causing non-sealing at individual positions.

[0060] In the above vacuum pumping and plastic-sealing device, the driving device 340 can be an electric driving device or a pneumatic driving device. The pneumatic driving device occupies a large space. Therefore, in this embodiment, the driving device 340 adopts an electric driving device. Specifically, as Figure 10 、 Figure 15 and Figure 16As shown, the driving device 340 includes a motor 341 and a transmission mechanism. The transmission mechanism is used to convert the rotational motion of the motor into a linear motion, and the output end of the transmission mechanism is connected to the upper support. The transmission mechanism includes a first gear 342 fixedly connected to the output shaft of the motor; a second gear 343 meshing with the first gear 342; a third gear 344 fixedly connected to the second gear 343, and an output rack 345 meshing with the third gear 344. Among them, a pin hole is 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.

[0061] Specifically, as Figure 10 shown, a connecting plate 347 is provided between the upper support 320 and the driving device 340. The connecting plate 347 is threadedly connected to the upper support 320, and a guiding groove 3471 is formed on the connecting plate 347. The lower end of the output rack 345 is inserted into the guiding groove 3471. Long-strip-shaped pin holes are respectively provided on the guiding groove 3471 and the lower end of the output rack 345. The pin shaft 346 passes through the pin holes of the guiding groove 3471 and the output rack 345. There is a gap between the lower end surface of the output rack 345 and the bottom of the guiding groove 3471, and an elastic body 348 is provided in the gap.

[0062] As Figure 15 shown, at 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 close 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 output rack 345 to continue to move downward for a certain distance after the upper support 320 moves downward 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.

[0063] In the vacuum pumping stage, a sealed cavity 301 is formed between the lower support 310 and the upper support 320. Due to the decrease in air pressure, under the action of atmospheric pressure, the upper support 320 moves downward. At this time, due to the existence of the long-strip-shaped pin hole, the output rack 345 can remain stationary when the upper support 320 moves downward, playing a protective role for the entire driving device 340.

[0064] 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 sealed cavity 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.

[0065] 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 sealed cavity 301; therefore, in order to provide the sealing performance of the sealed cavity 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.

[0066] Specifically, Figure 9 , Figure 10 As shown, the driving device 340 and the vacuum assembly 330 are both mounted on the mounting seat 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.

[0067] 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 driving device 340 is connected to the upper support 320 and then connected to the mounting 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 mounting seat 305. After forming an assembly, the whole is installed in the mounting cavity 211 through screws penetrated on the support ears on both sides of the mounting seat 305. Each component realizes modular assembly, and each part is not exposed on the outer surface, and the integrity of the device is good.

[0068] 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-sealable, the powder or liquid may enter the sealed cavity 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.

[0069] Among them, the way the lower support 310 is installed on the door body 200 is not unique. In this embodiment, as Figure 17A - Figure 17C shown, the lower support 310 can be detachably installed on the door body 200 from the inner side of the door body 200 (i.e., the side with the inner liner). Since the door body 200 of the refrigerator must ensure heat insulation, a heat preservation small door 250 is provided at the inner part of the lower support 310 facing the storage chamber 100. Among them, as Figure 17C shown, an installation hole 201 communicating inside and outside is opened on the door body 200, and 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.

[0070] In one implementation manner, 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 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 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.

[0071] 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 19 、 Figure 20 shown, a small door seal 253 is provided between the heat preservation small door 250 and the inner liner 220 of the door body. Specifically, the first shell 251 is provided with a support arm 2512 at the position where it cooperates with the inner 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.

[0072] 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 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.

[0073] As Figure 17A - Figure 17C 、 Figure 18 、Figure 19 As shown, the locking device 400 includes a locking hook assembly disposed on the heat-insulating small door 250 and a locking groove 221 disposed on the inner liner 220 of the door body. The locking hook assembly includes a locking hook penetrating through the heat-insulating 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 groove 221 to lock the heat-insulating small door 250. When the locking hook is in the second position, it disengages from the locking groove 221 to unlock the heat-insulating small door 250.

[0074] Specifically, in order to improve the reliability of the locking device 400, two locking grooves 221 and two locking hooks are respectively provided. Among them, the locking grooves 221 are located on the upper and lower sides of the mounting hole 201. As Figure 18 - Figure 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 groove 221, a hinge portion 412 rotatably connected to the heat-insulating small door 250, and a pulling portion 411 located on the lower side of the heat-insulating small door 250. Among them, the pulling portion 411 and the hooking portion 414 are respectively located on both sides of the hinge 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 23 shown, the upper locking hook 420 includes a hooking portion 421 that cooperates with the upper locking groove 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 groove structure 4231, and the T-shaped protrusion 4131 is inserted into the open groove 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-insulating 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.

[0075] As Figure 18 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 catch 2521 formed on the inner surface of the second housing 252. The catch 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 catches 2521.

[0076] 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 moves the lower locking hook 410, the lower locking hook 410 rotates around the hinge portion 412, the hook portion 414 moves downward to disengage from the lower locking groove 221, and at the same time the connecting portion pushes the upper locking hook 420 upward, the upper locking hook 420 disengages from the upper locking groove 221, and the upper locking hook 420 and the lower locking hook 410 are located at the second position to unlock the heat preservation small door 250 and the inner liner 220 of the door body.

[0077] 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 open cavity 311. In this way, the vacuum packaging device 300 can be integrally 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 open cavity 311. When the upper support 320 moves downward, the opening of the storage bag can be placed in the sealing cavity 301. Specifically, the operation panel 270 is detachably connected to the door body housing 210. The operation panel 270 is also provided with a display and control device 272, and 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.

[0078] 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. Then, the upper support 320 is controlled to descend until the upper support 320 moves in place (the sealing cavity 301 is sealed), and then the vacuum pump 331 is controlled to start to perform vacuum pumping on the sealing cavity 301. The storage bag realizes vacuum pumping through the opening of the storage bag located in the sealing cavity 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 the 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 that the user can take out the storage bag, and the vacuum packaging of the storage bag is completed.

[0079] When the user performs vacuum pumping on the sealed tank body with an insertion port, the sealed tank body with an insertion port is connected to the vacuum tube joint 337 through a connecting pipe. After the connection is in place, the user triggers the start button on the operation panel 270, and the motor 341 starts. Then, the upper support 320 is controlled to descend until the upper support 320 moves in place until the sealing chamber 301 is sealed. At this time, the vacuum pump 331 is controlled to start to perform vacuum pumping on the sealed tank body with an insertion port. After the vacuum pumping process is completed, the gas balance device is controlled to work for the set time. After the air pressure in the sealing chamber 301 reaches one standard atmospheric pressure, the driving device is controlled to drive the upper support 320 to move upward to the initial position. Since the pipelines of the sealed tank body and the pipelines for pumping the storage bag are interconnected, in order to prevent the pipelines from communicating with the outside through the chamber between the upper support 320 and the lower support 310 when sealing the tank body, therefore, by controlling the driving device to seal the sealing chamber and then performing vacuum pumping on the sealed tank body, the vacuum pumping pipeline can be sealed, and it is not necessary to isolate the pipelines of the sealed tank body and the pipelines for pumping the storage bag through components such as a switching valve to achieve normal operation, which simplifies the components and reduces the cost.

[0080] Embodiment 2

[0081] The structure of this Embodiment 2 is basically the same as that of Embodiment 1, the difference lies in the connection manner between the lower support 310 and the heat preservation small door 250. Specifically, in this embodiment, referring to Figure 24A 、 Figure 24B As shown, the lower support 310 is detachably connected to the heat preservation small door 250. As Figure 25The shown heat-insulating small door 250 is 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 is snap-connected to the second housing 252. The first housing 251 is provided with an extension arm 2511 in a direction away from the second housing 252, and the lower support 310 is detachably connected to the extension arm 2511.

[0082] Specifically, a first limiting portion extending upward is formed at an end of the extension arm 2511, and a second limiting portion matching the first limiting portion is formed on a 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 sealing of the sealing chamber is not tight due to the horizontal movement of the lower support 310.

[0083] To further ensure the heat insulation of the door body 200 and avoid cold leakage through the gap between the installation hole 201 and the heat-insulating small door 250, a small door seal 253 is provided between the heat-insulating small door 250 and the inner door liner 220. Specifically, the first housing 251 is provided with a support arm 2512 at a position where it cooperates with the inner door liner 220. The size of the support arm 2512 is larger than the size of the installation hole 201. An installation groove surrounding the installation hole 201 is provided on the support arm 2512, and the small door seal 253 is installed in the installation groove.

[0084] Specifically, to ensure that the heat-insulating small door 250 is reliably fixed to the door body 200, a locking device 400 is provided between the heat-insulating small door 250 and the inner door liner 220.

[0085] As Figure 25 shown, the locking device 400 includes: a locking hook 440 hinged to the bottom of the heat-insulating small door 250. A hinge shaft for connecting with the heat-insulating small door 250 is disposed in the middle of the locking hook 440 and is connected to the heat-insulating small door 250; it also includes a locking groove formed on the inner door liner 220 and cooperating with the locking hook; and a return torsion spring 450 sleeved on the hinge shaft. One leg of the return torsion spring abuts against the heat-insulating small door 250, and the other leg abuts against the locking hook 440. In an initial state, the torsion of the return torsion spring 450 is adapted to keep the locking hook 440 in a first position, enabling the heat-insulating small door 250 to be installed on the door body.

[0086] Specifically, in order to improve the aesthetics of the small door, an installation groove is formed at the bottom of the small door, and the locking hook is installed inside the installation groove. As Figure 24A , Figure 24B shows the process of disassembling the heat-insulating small door 250 and the lower support 310. When the heat-insulating small door 250 and the lower support 310 are installed on the door body 200, the locking hook cooperates with the locking groove to achieve the locked state of the heat-insulating small door 250; when it is necessary to disassemble the heat-insulating small door 250 and the lower support 310, the locking hook is pulled to make it away from the locking groove, and the locking device 400 is in the unlocked state. The heat-insulating small door 250 and the lower support 310 are pulled outwards, and the lower support 310 is taken out from the heat-insulating small door 250, and then the lower support 310 can be cleaned. In this embodiment, the lower support 310 is detachably connected to the heat-insulating small door 250, which can make the cleaning of the lower support 310 simpler and more convenient.

[0087] Embodiment 3

[0088] The structure of this Embodiment 2 is basically the same as that of Embodiment 1, the difference lies in the connection manner between the lower support 310, the heat-insulating small door 250 and the door body 200.

[0089] As Figure 26A - Figure 26C shown, the lower support 310 and the heat-insulating small door 250 are independently arranged. A limiting portion for restricting the in-place position of the lower support 310 is provided below the installation hole 201. One end of the lower support 310 abuts against the limiting portion, and the other end abuts against the heat-insulating small door 250. The heat-insulating small door 250 can be installed on the door body 200 by using the locking device 400 in Embodiment 1 or Embodiment 2.

[0090] Obviously, the above embodiments are only examples given for clear illustration, rather than limitations on the embodiments. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the embodiments here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A refrigerator, comprising: Storage room; Open or close the door body of the storage room. The door body includes a door body outer shell, a door body inner liner, an upper end cover, a lower end cover, and a heat insulation layer located between the door body outer shell, the door body inner liner, the upper end cover, and the lower end cover; It is characterized in that an installation cavity is formed on the door body outer shell, and a vacuum pumping assembly is arranged in the installation cavity. The vacuum pumping assembly includes a vacuum pump; A vacuum packaging device is further arranged on the door body. The vacuum packaging device is arranged in the installation cavity and is used for vacuum pumping and plastic sealing treatment of a storage bag. The vacuum packaging device includes: A lower support, and the lower support is provided with a first open cavity; An upper support, and the upper support is provided with a second open cavity. The upper support can move in a direction approaching or away from the lower support under the drive of a driving device. After the upper support moves in place in the direction approaching the lower support, the first open cavity and the second open cavity are butted and sealed to form a sealed cavity; The vacuum pumping assembly is communicated with the sealed cavity through a pipeline and is used for vacuum pumping or pressure relief of the sealed cavity; The vacuum packaging device further includes a packaging device located outside the sealed cavity. The packaging device is used for plastic sealing treatment of the storage bag after vacuum pumping is completed. The packaging device includes a heat insulation pad and a heating device arranged oppositely. The heating device is installed in a groove on the lower surface of the upper support, and the heat insulation pad is installed in a groove on the upper surface of the lower support; A bar door is arranged on the door body at the area where the installation cavity is located. The lower end of the bar door is hinged to the door body, and the bar door is used for opening or closing the front opening of the installation cavity; The bar door includes a bar door inner plate and a bar door outer plate. An air extraction pipe joint is arranged on the bar door inner plate and / or the bar door outer plate. The air extraction pipe joint is communicated with the vacuum pump through an air extraction pipe. A cavity for accommodating the air extraction pipe is formed between the bar door inner plate and the bar door outer plate; The lower support can be detachably installed on the door body from the inner side of the door body; A heat preservation small door is arranged on the inner side part of the lower support facing the storage room. An installation hole communicating inside and outside is opened on the door body. The lower support and the heat preservation small door are inserted into the installation hole from the inner side of the door body; The heat preservation small door is formed by a first shell and a second shell having an open cavity structure and a heat insulation member arranged between the first shell and the second shell. The first shell is provided with an extension arm in a direction away from the second shell, and the lower support is formed on the extension arm; A locking device is arranged between the heat preservation small door and the door body inner liner. The locking device is used for locking or unlocking the heat preservation small door on the door body; The locking device includes a lock hook assembly arranged on the heat preservation small door and a locking groove arranged on the inner liner of the door body; 2. The refrigerator according to claim 1, characterized in that: The vacuum pumping assembly further includes: a pressure detection device and a gas balance device. The pressure detection device is used for detecting the pressure in the air extraction pipe, and the gas balance device is controlled to adjust the gas in the air extraction pipe to communicate with the outside gas.

3. The refrigerator according to claim 2, characterized in that: The suction pipe is introduced into the cavity from the hinged end of the bar door, and the end of the suction pipe is inserted into the suction pipe joint.

4. The refrigerator according to claim 1, characterized in that: The vacuum pumping assembly further includes a filtering and protecting device for filtering foreign matters sucked into the pipeline.

5. The refrigerator according to claim 4, characterized in that: The filtering and protecting device includes a filtering container connected in series in the pipeline. Two inlets and an outlet are arranged at the upper end of the filtering container. One of the inlets is communicated with the sealed chamber through a pipeline, and the other inlet is communicated with the suction pipe joint through a pipeline; the outlet is communicated with the vacuum pump through a pipeline.

6. The refrigerator according to claim 5, characterized in that: A switching valve is arranged in the air extraction port, and the switching valve is used for closing the communication between the inside and outside of the air extraction port in the initial state.

7. The refrigerator according to claim 2, characterized in that: It further includes a control system. After receiving the vacuum pumping tank instruction issued by the user, the control system controls the driving device to drive the upper support and the lower support to approach relatively until the sealed chamber is sealed, and then controls the vacuum pumping assembly to perform vacuum pumping on the vacuum pumping tank, and controls the vacuum pump to stop when it is determined that the pressure detected by the pressure detection device meets the preset conditions.

8. The refrigerator according to claim 7, wherein: The control system is configured to control the gas balancing device to work for a set time after controlling the vacuum pump to stop, and control the driving device to drive the upper support and the lower support to move away relatively until they return to the initial position.

Images