A refrigerator

Abstract

The present invention discloses a refrigerator, on the outer side of the refrigerator door body, there is a vacuum pumping assembly, the vacuum pumping assembly includes a vacuum pump; a vacuum pumping pipe joint, which is arranged on the door body and communicated with the vacuum pump, and is used for performing gas extraction treatment on a sealed tank body inserted on it through a pipeline; a vacuum packaging device, which is arranged on the door body, the vacuum packaging device includes: an upper support and a lower support, the positions of the upper support and the lower support are relatively arranged; a driving device, which is used for driving the movement of the upper support and / or the lower support so that the upper support and the lower support approach or move away from each other, and a sealed cavity is formed after the opposite surfaces of the upper support and the lower support are butted and sealed; the sealed cavity is communicated with the vacuum pump and is used for performing gas extraction treatment on a storage bag placed in the sealed cavity with an opening. It can perform vacuum fresh-keeping treatment on the food materials stored in various compartments of the refrigerator, and expands 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 change. 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 uses a small vacuum pump installed outside the drawer to evacuate the drawer to keep the drawer in a negative pressure state, thus realizing the preservation of the food in the drawer. This preservation method has the following limitations: 1. Since the evacuation process needs to be achieved through a vacuum pump, the vacuum pump will occupy a part of the storage space in the refrigerating compartment; 2. This preservation method requires the drawer to be sealed. Otherwise, a vacuum state cannot be formed inside the drawer. Therefore, higher requirements are put forward for the forming and assembly processes of the drawer; 3. This preservation method can only preserve the food in the drawer and cannot play a preservation role for the food in other areas of the refrigerator. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing refrigerator has an unsatisfactory preservation effect. Furthermore, a refrigerator with a lower cost, without occupying storage space, and capable of preserving food in each area is proposed.

[0006] To solve the above technical problems, the present invention discloses a refrigerator, comprising: a storage compartment; a door body for opening or closing the storage compartment; characterized in that: it further comprises: a vacuum pumping assembly, the vacuum pumping assembly comprising a vacuum pump; a vacuum pumping tube connector disposed on the door body and communicating with the vacuum pump for performing gas extraction treatment on a sealed tank body plugged thereto through a pipeline; a vacuum packaging device disposed on the door body, the vacuum packaging device comprising: an upper support and a lower support, the positions of the upper support and the lower support being relatively arranged; a driving device for driving the movement of the upper support and / or the lower support to make the upper support and the lower support approach or move away from each other, and a sealed cavity being formed after the opposite surfaces of the upper support and the lower support are docked and sealed; the sealed cavity communicates with the vacuum pump for performing gas extraction treatment on a storage bag placed with an opening in the sealed cavity.

[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 and a vacuum pumping tube connector on the door body, and the user can perform vacuum packaging treatment on a storage bag containing food ingredients and perform vacuum pumping treatment on a sealed tank body by using the vacuum pumping tube connector; compared with the existing vacuum drawer, the vacuum packaging device of the present invention can perform vacuum pumping and fresh-keeping treatment on the food ingredients stored in various compartments of the refrigerator, expanding the fresh-keeping range. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The following will describe in detail the preferred embodiments of the present invention with the help of 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 7Explosion diagram of the upper support, drive device and vacuum pumping assembly in the vacuum packaging device of the present invention;

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

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

[0019] Figure 10 Schematic diagram of vacuum pumping the vacuum tank by using the vacuum pumping tube joint in the refrigerator of the present invention;

[0020] Figure 11A Stereogram of the vacuum pumping tube joint in the present invention;

[0021] Figure 11B Cross-sectional view of the vacuum pumping tube joint in the present invention;

[0022] Figure 12 Explosion diagram of the mounting seat and the pipeline connector in the vacuum packaging device of the present invention;

[0023] Figure 13 Explosion diagram of the upper support, heating device and sealing ring in the present invention;

[0024] Figure 14 Partial cross-sectional view of the connection between the upper support and the heating device in the present invention;

[0025] Figure 15 Schematic diagram of the connection relationship between the upper support and the drive device when the upper support is in the initial position in the present invention;

[0026] Figure 16 Schematic diagram of the connection relationship between the upper support and the drive device when the upper support is in the descending position in the present invention;

[0027] Figure 17A Schematic diagram of the structure of the lower support, heat preservation small door and door body in the locked state in Embodiment 1 of the present invention;

[0028] Figure 17B Schematic diagram of the structure of the lower support, heat preservation small door and door body in the unlocked state in Embodiment 1 of the present invention;

[0029] Figure 17C 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;

[0030] Figure 18 Schematic diagram of the front and reverse structures of the heat preservation small door and the lower support in the assembled state in Embodiment 1 of the present invention;

[0031] Figure 19 Explosion diagram of the heat preservation small door, lower support and lock hook assembly in Embodiment 1 of the present invention;

[0032] Figure 20 Schematic diagram of the installation of the lock hook assembly on the heat preservation small door in Embodiment 1 of the present invention;

[0033] Figure 21 Partial cross-sectional view of the installation of the lock hook assembly on the heat preservation small door in Embodiment 1 of the present invention;

[0034] Figure 22 Stereogram of the lower lock hook in Embodiment 1 of the present invention;

[0035] Figure 23 Front and reverse schematic diagrams of the upper lock hook in Embodiment 1 of the present invention;

[0036] Figure 24A Schematic diagram of the structure of the lower support, heat preservation small door and door body in the locked state in Embodiment 2 of the present invention;

[0037] Figure 24B Schematic diagram of the structure of the lower support and heat preservation small door removed from the door body in Embodiment 2 of the present invention;

[0038] Figure 25 Exploded view of the heat preservation small door, lower support and lock hook assembly in Embodiment 2 of the present invention;

[0039] Figure 26A Schematic diagram of the structure of the lower support, heat preservation small door and door body in the locked state in Embodiment 3 of the present invention;

[0040] Figure 26B Schematic diagram of the structure of the heat preservation small door and door body in the unlocked state in Embodiment 3 of the present invention;

[0041] Figure 26C Schematic diagram of the structure of the lower support and heat preservation small door removed from the door body in Embodiment 3 of the present invention. Detailed implementation manners

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and 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.

[0043] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two components. 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.

[0044] 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.

[0045] Embodiment 1

[0046] 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 approximately 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, wherein, referring to Figure 2 , the door body 200 includes a door body outer shell 210 located outside the storage compartment 100, a door body inner liner 220 located inside the storage compartment 100, an upper end cover 230, a lower end cover 240, and a heat insulation layer located between the door body outer shell 210, the door body inner liner 220, the upper end cover 230, and the lower end cover 240; generally, the heat insulation layer is filled with foaming material.

[0047] The storage compartment 100 has an open box body, and the storage compartment 100 is vertically partitioned into a lower freezer compartment A and an upper refrigerator compartment 100B. Each of the separated spaces may 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.

[0048] As Figure 3 , Figure 4 shown, a vacuum packaging device 300 is provided on the door body 200 of the refrigerator, and the vacuum packaging device 300 is used to evacuate and plasticize a storage bag; the vacuum packaging device 300 can be provided either on the freezer door body 200A or on the refrigerator door body 200B. Since the refrigerator door body 200B is located on the upper side, in order to conform to the user's usage habits, it is usually preferably provided on the refrigerator door body 200B.

[0049] As Figure 4 - Figure 17 is an embodiment of the vacuum packaging device 300. In this embodiment, as Figure 4 shown, the vacuum packaging device 300 includes: a lower support 310, and the lower support 310 is provided with a first open cavity 311; an upper support 320, the upper support 320 is provided with a second open cavity 321, and the upper support 320 can move in a direction approaching or departing 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 chamber 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.

[0050] Specifically, in order to improve the sealing performance of the sealed chamber 301, as Figure 4 shown, sealing parts for sealing the sealed chamber 301 are arranged 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 arranged inside. The two sealing rings 350 arranged in the first sealing groove 313 and the second sealing groove 323 seal the sealed chamber 301 inside, realizing reliable sealing of the sealed chamber 301.

[0051] Specifically, as Figure 5As shown, a limiting part is provided in the first open cavity 311 or the second open cavity 321, which is used to limit the insertion position of the storage bag inserted into the sealed chamber 301, so as to prevent the opening position of the storage bag from protruding out of the sealed chamber 301; specifically, the limiting part is a limiting rib 322 provided in the first open cavity 311 or the second open cavity 321, and the height of the limiting rib 322 is greater than the depth of the first open cavity 311 or the second open cavity 321; the length of the limiting rib 322 is slightly lower than the length of the first open cavity 311 or the second open cavity 321. When the user inserts the storage bag into the sealed chamber 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 chamber 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 chamber 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 can automatically detect whether the storage bag is in place, and the controller can then automatically control the on-off of the vacuum pump.

[0052] The vacuum packaging device 300 further includes a vacuum pumping assembly 330. As Figure 6 , Figure 7 shown, the vacuum pumping assembly 330 includes a vacuum pump 331 communicated with the sealed chamber 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 sealed chamber 301; the gas balance device 333 is specifically an electric balance valve. When the electric balance valve is opened, the sealed chamber 301 is communicated with the outside. When the user performs vacuum packaging, the vacuum pump 331 is turned on to perform vacuum pumping on the sealed chamber 301. When the pressure detection device 332 detects that the pressure in the sealed chamber 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 sealed chamber 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, the air pressure in the sealed chamber 301 can be increased to the standard atmospheric pressure by opening the above-mentioned electric balance valve, which is convenient for the user to take out the storage bag.

[0053] In order to prevent foreign objects in the sealed chamber 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 a pipeline 335. An inlet and an outlet are arranged at the upper end of the filtering container 334. The inlet is communicated with the sealing chamber 301 through a pipeline, and the outlet is communicated with the vacuum pump 331 through a pipeline. Foreign matters in the sealing chamber 301 enter the filtering container 334 through the pipeline 335 and are retained at the bottom of the filtering container 334, preventing the 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.

[0054] In another embodiment, as Figure 9 shown, the filtering and protecting device is a filter screen 336 arranged on the pipeline 335. Specifically, for the convenience of disassembly and assembly, the filter screen 336 is arranged at the position of the ventilation hole 324 at the connection position between the upper support 320 and the pipeline 335. After the user moves the upper support 320 to the highest position, the filter screen 336 can be disassembled, assembled or cleaned from the lower side. The connection hole between the sealing chamber 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 sealing chamber 301, resulting in a vacuum pumping failure, the pipeline 335 can also be connected to the sealing chamber 301 through two or more connection holes. The pipelines 335 are arranged in parallel and connected to the main pipeline through a tee or a multi-way connector. The pressure sensor and the electronic balance valve are arranged on the main pipeline.

[0055] Since a large amount of noise is generated when the vacuum pump exhausts, affecting the user experience, in order to further reduce the noise during the exhaust of the vacuum pump, as Figure 6 、 Figure 7 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.

[0056] Specifically, as Figure 6 、 Figure 7 shown, the driving device 340 and the vacuum pumping assembly 330 are both installed on the mounting seat 305 located above the upper support 320. The upper support 320 is provided with a ventilation hole 324 for communicating with the vacuum pumping assembly 330. Among them, as Figure 12As shown, the mounting base 305 includes a base body and a cover body 306. A vacuum pump mounting cavity 3051 is provided at the middle position on the base body of the mounting base 305, drive device mounting cavities 3052 are provided on the left and right sides of the vacuum pump mounting cavity 3051, a filter container mounting cavity 3053 is provided below the vacuum pump mounting cavity 3051; a silencer mounting cavity 3054 is provided above the vacuum pump mounting cavity 3051, and other component mounting cavities 3055 are provided above one of the drive device mounting cavities 3052. The other component mounting cavities 3055 are used for mounting an electric balance valve, a pressure sensor, etc. The cover body 306 is connected to the base body 305 to seal the vacuum pump mounting cavity 3051.

[0057] 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 all need to be connected through pipelines 305; and in order to achieve modular assembly, these components need to be assembled as a whole on the mounting base 305; therefore, in order to make the pipeline connection between the vacuum pumping components installed in the mounting base 305 more reasonable and easier during pipeline assembly on a mounting base with a relatively compact structure, pipeline connectors are provided on the pipelines. 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; wherein, a guiding structure is provided between the four-way connector 308A and the mounting base 305, and the four-way connector 308A is slidably inserted on the mounting base 305.

[0058] Specifically, as Figure 12 shown, the mounting base 305 is formed with a number of partition ribs 3056, and the partition ribs 3056 are used to divide the mounting base 305 into different mounting chambers; one of the partition ribs 3056 has an opening, and the partition rib 3056 is provided with a sliding protrusion along the thickness direction of the mounting base 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 sliding grooves along the thickness direction of the mounting base 305, and the plate body 3381 is slidably inserted on both sides of the opening of the partition rib 3056.

[0059] 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 mounting 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 partition 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. Moreover, this structure can embed the pipelines inside the seat body of the mounting base 305, avoiding the problem of messy routing of multiple pipelines.

[0060] In order to perform vacuum pumping on a sealed tank body with insertion ports, such as Figure 7 shown, a vacuum pumping pipe joint 337 communicated with the vacuum pumping assembly through a pipeline is further provided on the mounting base 305. When a user performs vacuum pumping on the sealed tank body with insertion ports, one end of a connecting pipe is inserted into the insertion port of the sealed tank body B, and the other end is inserted into the vacuum pumping pipe joint 337. Then, 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.

[0061] Specifically, the vacuum pumping pipe joint 337 is inserted into the cavity wall of the other component mounting cavity 3055; a switch valve is arranged inside the vacuum pumping pipe joint 337, and the switch valve is used to close the vacuum pumping pipeline in the initial state and open the vacuum pumping pipeline after the vacuum pumping pipe is inserted into the vacuum pumping pipe joint.

[0062] Such as Figure 11A 、 Figure 11B shown, the vacuum pumping pipe joint is formed by connecting a first interface portion 3371 and a second interface portion 3372. The first interface portion 3371 is provided with an interface for communicating with the vacuum pumping assembly, and the second interface portion 3372 is provided with an interface for communicating with the sealed tank body. A cavity is formed between the first interface portion 3371 and the second interface portion 3372. The switch valve is a plug 3373 and a return spring 3374 arranged in the cavity. The plug 3373 is used to block the interface portion of the second interface portion 3372, and the return spring 3374 is used to apply a force to the plug 3373 to block the interface of the second interface portion 3372.

[0063] Since the vacuum extraction interface 337 is directly connected to the filter container 334 through the pipeline 305, but since they are in two different chambers, therefore, the mounting seat 305 further includes a pipeline connector for connecting the pipeline between the vacuum extraction interface 337 and the filter container 334. Specifically, the pipeline connector is a two-way connector 338B. The two-way connector 338B includes a plate body 3381 and insertion interfaces 3382 located on both sides of the plate body 3381. One end of the insertion interface 3382 is connected to the vacuum extraction interface 337 through a pipeline; the other end is connected to the filter container 334 through a pipeline.

[0064] Since there are many pipeline components in the mounting seat, in order to make the pipeline connections between the vacuum extraction components more reasonable and orderly and avoid the pipelines being in a mess; 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 make the pipeline connections. By adopting the method of a narrow inner opening and a wide outer opening, a limiting structure for the pipeline connectors is formed, which can make the two pipeline connectors have better positioning. At the same time, the whole device has a simple structure and is convenient to install.

[0065] To maintain the overall aesthetics of the outer surface of the refrigerator door body 200 and the convenience of applying the vacuum packaging device 300, as Figure 3 shown, the door body housing 210 is provided with an inwardly recessed mounting cavity 211. After the driving device 340 is connected to the upper support 320, it is connected to the mounting seat 305 by screws. After the vacuum extraction assembly 330 is connected to the ventilation hole 324 on the upper support 320, it is installed on the mounting seat 305. After connecting the cover body 306 to the vacuum pump mounting cavity 3051 to form a component, the side of the mounting seat 305 with the cavity faces the door body housing 210, and the whole is installed in the mounting cavity 211 by screws passing through the ear parts on both sides of the mounting seat 305. Each component realizes modular assembly, and each part is not exposed on the outer surface, and the integrity of the device is better.

[0066] As Figure 4As shown, the vacuum packaging device 300 further includes a packaging area 302 located outside the sealing chamber 301. The packaging area 302 is used to perform plastic sealing on the storage bag after the vacuum pumping is completed. An insulating pad 360 and a heating device 370 are oppositely arranged in the packaging area 302. Specifically, the heating device 370 is installed in a groove on the lower surface of the upper support 320, and the insulating pad 360 is installed in a groove on the upper surface of the lower support 310 of the upper support 320. After the upper support 320 moves to form a sealed sealing chamber 301 with the lower support 310, the insulating pad 360 in the packaging area 302 abuts against the heating device 370. After the vacuum pumping is completed, the heating device 370 in the packaging area 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.

[0067] 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 to spread the heating area of the heating wire 371, so as to increase the plastic-sealing area of the storage bag and make the plastic sealing firm. The heating wire 371 extends along the length direction of the upper support 320 and bends upward on both sides of the upper support 320. The free ends of the heating wire 371 extending to the upper side of the upper support 320 are fixed to the upper support 320 through an insulating plate 372. Specifically, the insulating plate 372 is made of insulating material and is formed into a bent plate, covering the outside of the heating wire 371 to prevent the heating wire 371 from being exposed outside. Further, the two free ends of the heating wire 371 are respectively connected to two wires led out through a wiring terminal 374 through a spring 375. By setting the spring 375, the heating wire 371 can always be in a tensioned state, so that the heating wire 371 has a high flatness, and the heat conducting plate 373 located below the heating wire 371 is in close contact with the storage bag, avoiding the problem that the plastic sealing cannot be performed due to the unevenness of the heating wire 371 resulting in non-solid contact at individual positions.

[0068] In the above vacuum packaging device, the driving device 340 can be an electric driving device or a pneumatic driving device. Since the pneumatic driving device occupies a large space, in this embodiment, the driving device 340 adopts an electric driving device. Specifically, as Figure 7 、 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. 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.

[0069] 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-shaped pin holes are respectively provided on the guiding groove 3471 and the lower end of the output rack 345. The pin shaft 346 is inserted into 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.

[0070] 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 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 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 remain stable.

[0071] In the vacuum pumping stage, a sealed chamber 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, when the upper support 320 moves downward, the output rack 345 can remain stationary, playing a protective role for the entire driving device 340.

[0072] In order to precisely control the moving displacement of the upper support 320 and then determine whether the upper support 320 has moved in place to form a sealed space in the sealed chamber 301; in one implementation, the motor 341 is a stepper motor 341, and it is determined whether the upper support 320 has moved in place by detecting the rotation stroke of the stepper motor 341. In another implementation, a microswitch is provided on the lower support 310 or the upper support 320; after the upper support 320 moves in place, the microswitch is triggered, and the controller controls the drive device 340 to stop and lock at the current position according to the feedback signal of the microswitch.

[0073] The drive device 340 can be set to one, and the output gear is located in the middle area of the upper support 320. In this case, it is easy to cause the edge area of the upper support 320 to fit with the lower support 310 not tightly enough, resulting in air leakage in the sealed chamber 301; therefore, in order to provide the sealing performance of the sealed chamber 301, the drive devices 340 are respectively arranged on both sides of the upper support 320. Correspondingly, one connecting plate 347 is provided, and two guiding grooves 3471 are provided on the connecting plate 347; the two output racks 345 respectively extend into the guiding grooves 3471.

[0074] When a user applies the vacuum packaging device 300 to plastic-seal a food bag, especially when plastic-sealing foods with powder such as flour or liquids, etc., during the vacuum pumping process, the powder or liquid may enter the sealed chamber 301 and finally accumulate in the first open cavity 311 of the lower support 310; therefore, in order to facilitate the user to clean the food residues in the lower support 310, the lower support 310 is detachably installed relative to the door body 200.

[0075] 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, therefore, a heat preservation small door 250 is provided on the inner side part of the lower support 310 facing the storage chamber 100. Among them, as Figure 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.

[0076] 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 20As shown, the lower support 310 and the heat-insulating 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.

[0077] In order to further ensure the heat insulation of the door body 200 and avoid cold leakage through the gap between the mounting hole 201 and the heat-insulating small door 250, as Figure 18 、 Figure 19 shown, a small door seal 253 is provided between the heat-insulating 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 mounting hole 201. An installation groove surrounding the mounting hole 201 is provided on the support arm 2512, and the small door seal 253 is installed in the installation groove.

[0078] Specifically, in order 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 of the door body. The locking device 400 is used to lock or unlock the heat-insulating small door 250 on the door body 200.

[0079] As Figure 17A - Figure 17C 、 Figure 18 、 Figure 19 shown, the locking device 400 includes a lock hook assembly provided on the heat-insulating small door 250 and a locking groove 221 provided on the inner door liner 220 of the door body. The lock hook assembly includes a lock hook penetrating through the heat-insulating small door 250. The lock hook can be switched between a first position and a second position. When the lock hook is in the first position, it can cooperate with the locking groove 221 to lock the heat-insulating small door 250. When the lock hook is in the second position, it disengages from the locking groove 221 to unlock the heat-insulating small door 250.

[0080] Specifically, in order to improve the reliability of the locking device 400, two locking grooves 221 and lock 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 lock hook assembly includes an upper lock hook 420, a lower lock hook 410 and a return spring 430. As Figure 22As shown, the lower lock hook 410 includes a hook portion 414 that cooperates with the locking groove 221 on the lower side, is rotatably connected to the hinge portion 412 on the heat-insulating small door 250, and a handle portion 411 located on the lower side of the heat-insulating small door 250, wherein the handle portion 411 and the hook portion 414 are respectively located on both sides of the hinge portion 412. The lower lock hook 410 also includes a lower connection portion 413 connected to the upper lock hook 420, wherein the lower connection portion 413 extends along the upper side of the handle portion 411. Specifically, the end of the lower connection portion 413 is formed into a T-shaped protrusion 4131. Figure 20 As shown, the upper locking hook 420 includes a hooking portion 421 that cooperates with the locking groove 221 on the upper side and an upper connecting portion 423 that is connected to the lower locking hook 410. Specifically, the lower end of the upper connecting portion 423 is formed into an open groove structure 4231, and the T-shaped protrusion 4131 is inserted into the open groove 4231 to achieve the connection between the upper locking hook 420 and the lower locking hook 410. The reset spring 430 is arranged between the upper locking hook 420 and the upper end surface of the heat preservation small door 250. More specifically, a connecting shaft 422 is formed on the upper locking hook 420, and the reset spring 430 is sleeved on the connecting shaft 422.

[0081] like Figure 20 As shown, a guide positioning portion is formed on the inner surface of the second shell 252, the upper connecting portion 423 is clamped on the guide positioning portion, and the upper locking hook 420 can slide along the guide positioning portion. Specifically, the guide positioning portion is a hook 2521 formed on the inner surface of the second shell 252, the hook 2521 is located on the left and right sides of the upper connecting portion 423, and extends a certain distance in the up-down direction. The upper connecting portion 423 is clamped between the two hooks 2521.

[0082] In the initial state, under the elastic force of the return spring 430, the upper locking hook 420 and the lower locking hook 410 are located in the first position to realize the locking of the thermal insulation door 250 and the door body inner liner 220; when the user pulls the lower locking hook 410 by hand, the lower locking hook 410 rotates around the hinge part 412, and the hooking part 414 moves downward to disengage from the locking groove 221 on the lower side. At the same time, the connecting part pushes the upper locking hook 420 upward to move upward, and the upper locking hook 420 disengages from the locking groove 221 on the upper side. The upper locking hook 420 and the lower locking hook 410 are located in the second position to realize the unlocking of the thermal insulation door 250 and the door body inner liner 220.

[0083] In order to ensure the aesthetic appearance of the refrigerator door 200, refer to Figure 1 , Figure 2As shown, a bar door 260 is provided on the refrigerator door body 200 at the area where the vacuum packaging device 300 is located. The lower end of the bar door 260 is hinged to the door body 200 and can be flipped to a position perpendicular to the surface of the door body housing 210. The upper end of the bar door 260 is connected to the door body housing 210 through a first push-and-eject 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 users to operate. When the bar door 260 is closed, the appearance of the door body 200 is ensured to be beautiful.

[0084] The inner side of the bar door 260 further includes an operation panel 270 covering the outside of the installation cavity. An insertion opening 271 for inserting the storage bag to be packaged and a jack 273 for inserting the vacuum tube connector 337 are formed on the operation panel 270. Among them, the lower surface of the insertion opening 271 is flush with the upper surface of the first open cavity 311. In this way, the vacuum packaging device 300 can be hidden entirely behind the operation panel 270. When the user is performing vacuum packaging, the opening of the storage bag can be directly inserted into the insertion opening 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 chamber 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.

[0085] When the user performs vacuum packaging on the storage bag, 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 sealing chamber 301 is sealed), and then the vacuum pump 331 is controlled to start, and the sealing chamber 301 is subjected to vacuum pumping treatment. The storage bag is vacuumed through the storage bag opening located in the sealing chamber 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 that the user can take out the storage bag, and the vacuum packaging of the storage bag is completed.

[0086] When the user evacuates the sealed tank B with an insertion port, as Figure 10 shown, the sealed tank B with an insertion port is inserted through a connecting pipe onto the vacuum pipe joint 337 inside the jack 273 of the operation panel 270. After the insertion is in place, 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 until the sealing chamber 301 is sealed; at this time, the vacuum pump 331 is controlled to start, and the sealed tank B with an insertion port is subjected to vacuum pumping treatment. After the vacuum pumping treatment is completed, the gas balance device is controlled to work for a set time. After the air pressure in the sealing chamber 301 reaches the standard atmospheric pressure, the driving device is controlled to drive the upper support to move upward to the initial position. Since the pipelines of the sealed tank B 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 sealed tank B, therefore, by controlling the driving device to seal the sealing chamber and then evacuating the vacuum tank B, the vacuum pumping pipeline can be sealed, and normal operation can be achieved without isolating the pipelines of the sealed tank and the pipelines for pumping the storage bag through components such as on-off valves, simplifying the components and reducing the cost.

[0087] Embodiment 2

[0088] The structure of this Embodiment 2 is basically the same as that of Embodiment 1, the difference lies in the connection method between the lower support 310 and the heat preservation small door 250. Specifically, in this embodiment, referring to Figure 24A 、 Figure 24B shown, the lower support 310 is detachably connected to the heat preservation small door 250. AsFigure 25 As shown, the 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.

[0089] 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.

[0090] In order 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 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.

[0091] Specifically, in order 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 of the door body.

[0092] 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 provided 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 of the door body 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 make the locking hook 440 in a first position, enabling the heat-insulating small door 250 to be installed on the door body.

[0093] 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. Among them, 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 realize 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, pull the locking hook to make it away from the locking groove, and the locking device 400 is in the unlocked state. Pull out the heat-insulating small door 250 and the lower support 310 outward, and take out the lower support 310 from the heat-insulating small door 250 to clean the lower support 310. 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.

[0094] Embodiment 3

[0095] 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, the heat-insulating small door 250 and the door body 200.

[0096] As Figure 26A - Figure 26C shown, the lower support 310 and the heat-insulating small door 250 are independently arranged. A limiting part for restricting the in-place position of the lower support 310 is provided 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-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.

[0097] Obviously, the above embodiments are only examples clearly described and not 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 enumerate 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: A storage compartment; A door body for opening or closing the storage compartment, the door body comprising a door body outer shell, a door body inner liner, and a heat insulation layer located between the door body outer shell and the door body inner liner; Characterized in that: it further comprises a vacuum pumping assembly, the vacuum pumping assembly comprising a vacuum pump; a vacuum tube connector disposed on the door body and communicating with the vacuum pump, for performing gas extraction treatment on a sealed tank body plugged thereto through a pipeline; A vacuum packaging device, a cavity is formed inside the door body, the vacuum packaging device is disposed inside the cavity, and the vacuum packaging device is used for performing vacuum pumping and plastic sealing treatment on a storage bag, and the vacuum packaging device comprises: An upper support and a lower support, the positions of the upper support and the lower support are relatively arranged, the lower support is provided with a first open cavity, and the upper support is provided with a second open cavity; A driving device, the upper support can move in a direction approaching or away from the lower support under the drive of the driving device, and 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 sealed cavity communicates with the vacuum pump, and is used for performing gas extraction treatment on a storage bag with an opening placed in the sealed cavity; The vacuum packaging device further comprises a packaging area located outside the sealed cavity, the packaging area is used for performing plastic sealing treatment on the storage bag after vacuum pumping is completed, and the packaging area is provided with relatively arranged heat insulation pads and heating devices, 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; 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 compartment, an installation hole communicating inside and outside is opened on the door body, and 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, and the locking device is used for locking or unlocking the heat preservation small door on the door body; The locking device comprises 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 comprises: a pressure detection device and a gas balance device, the pressure detection device is used for detecting the pressure in the pipeline, and the gas balance device is used for communicating the gas in the pipeline with the outside gas; 3. The refrigerator according to claim 1 or 2, characterized in that: The vacuum pumping assembly further comprises a filtering protection device for filtering foreign matters sucked into the pipeline.

4. The refrigerator according to claim 3, wherein: The filtering and protecting device includes a filtering container connected in series on 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 vacuum pumping pipe joint through a pipeline; the outlet is communicated with the vacuum pump through a pipeline.

5. The refrigerator according to claim 1, characterized in that: A switching valve is arranged inside the vacuum pumping pipe joint, and the switching valve is used for closing the communication of the gas inside and outside the vacuum pumping pipe joint in the initial state.

6. The refrigerator according to claim 5, wherein: The vacuum pumping pipe joint is formed by connecting a first interface part and a second interface part. A cavity is formed between the first interface part and the second interface part. The switching valve is a plug and a return spring arranged in the cavity. The plug is used for blocking the interface part of the second interface part, and the return spring is used for applying a force to the plug to block the interface of the second interface part.

7. The refrigerator according to claim 2, wherein: It further includes a control system. After receiving the sealed tank body 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 sealed tank body, 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, characterized in that: The control system is configured to control the gas balance 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.

9. The refrigerator according to claim 1, characterized in that: The driving device, the vacuum pumping assembly and the vacuum pumping pipe joint are installed on a mounting seat, and the mounting seat and the upper support are installed in the mounting cavity.

10. The refrigerator according to claim 1, characterized in that: It further includes an operation panel covering the outside of the cavity. An insertion port suitable for inserting the bag to be packaged and a jack suitable for inserting the vacuum pumping pipe joint are formed on the operation panel.

Images