CN112284003B - Refrigerator with a refrigerator body - Google Patents

Abstract

The present invention discloses a refrigerator, wherein a vacuum packaging device is arranged on the outer side of the refrigerator door body, and the vacuum packaging device comprises: an upper support and a lower support, wherein one of the upper support and the lower support is fixedly connected to the door body; the other of the upper support and the lower support moves up and down under the drive of a driving device; after the upper support and the lower support move to docking, the cavity between the two forms a vacuum zone, wherein the vacuum zone is connected to a vacuum pumping component; a bar door is arranged on the outer side of the door body at the area where the vacuum packaging device is located, and a switch door detection device for detecting the switch of the bar door is arranged at the position corresponding to the bar door and the door body; a control unit determines the opening or closing of the drive device and the electric signal of the vacuum pumping component according to the detection signal of the switch door detection device. The refrigerator of the present invention can perform vacuum packaging processing on storage bags containing food materials, thereby expanding the preservation range; the drive device and the electric signal of the vacuum pumping component are controlled by the switch of the bar door, thereby improving the energy saving and safety of the refrigerator.

Description

A refrigerator

Technical Field

The present invention relates to the field of household appliances, and in particular to a refrigerator.

Background Art

In recent years, people's health awareness has gradually increased, and the demand for food preservation has also increased accordingly. As the most commonly used household appliance for food storage, food preservation and storage has become a technical demand that needs to be urgently addressed in the refrigerator field.

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

The vacuum preservation technology currently used in refrigerators mainly involves setting up sealed drawers in the refrigerator, and using a small vacuum pump installed outside the drawer to evacuate the drawer, so that the drawer maintains a negative pressure state, thereby preserving the food in the drawer. This preservation method has the following limitations: 1. Since the vacuum treatment needs to be achieved through a vacuum pump, the vacuum pump will occupy part of the storage space in the refrigerated compartment; 2. This preservation method requires the drawer to be sealed, otherwise a vacuum state cannot be formed in the drawer, so it places high demands on the molding and assembly process of the drawer; 3. This preservation method can only preserve the food in the drawer, but cannot preserve the food in other areas of the refrigerator.

Summary of the invention

The technical problem to be solved by the present invention is that the preservation effect of existing refrigerators is not ideal, and thus a refrigerator with low cost, no storage space occupation and the ability to preserve food in all areas is proposed.

In order to solve the above technical problems, the present invention discloses a refrigerator, wherein a vacuum packaging device is arranged on the outer side of the refrigerator door body, and the vacuum packaging device comprises: an upper support and a lower support, one of the upper support and the lower support is fixedly connected to the door body; the other of the upper support and the lower support moves up and down under the drive of a driving device; after the upper support and the lower support move to dock with each other, a vacuum zone is formed in the cavity between the two, wherein the vacuum zone is connected to a vacuum assembly; a bar door is arranged on the outer side of the door body in the area where the vacuum packaging device is located, and a door opening and closing detection device for detecting the switch of the bar door is arranged at the position corresponding to the bar door and the door body; the door opening and closing detection device, the driving device and the vacuum assembly are respectively electrically connected to a control unit, and after receiving the detection signal of the door opening and closing detection device, the control unit sends a control signal to turn on or off the electrical signals of the driving device and the vacuum assembly.

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

The refrigerator of the present invention is provided with a vacuum packaging device on the door body, which can perform vacuum packaging treatment on the storage bag containing food to be placed in the refrigerator; compared with the existing vacuum drawer, the vacuum packaging device of the present invention can perform vacuum preservation treatment on the food stored in various compartments of the refrigerator, expanding the preservation range; in addition, the outer side of the door body is provided with a bar door at the area where the vacuum packaging device is located, and the bar door is provided with a switch door detection device for detecting the switch of the bar door at the position corresponding to the door body; the control unit determines the opening or closing of the driving device and the electrical signal of the vacuum component according to the detection signal of the switch door detection device. It can cut off the power of the driving device when the bar door is closed, which is energy-saving and avoids safety hazards.

BRIEF DESCRIPTION OF THE DRAWINGS

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

FIG1 is a schematic structural diagram of a refrigerator according to Embodiment 1 of the present invention;

FIG2 is a schematic structural diagram of a refrigerated door body in Embodiment 1 of the present invention;

FIG3 is an exploded view of a refrigerated door body in Embodiment 1 of the present invention;

FIG4 is an exploded view of the connection between the bar door and the door body in Embodiment 1 of the present invention;

FIG5 is a schematic diagram of the coordination between the bar door and the damping device in Embodiment 1 of the present invention;

FIG6 is an exploded view of another connection method between the bar door and the door body in Embodiment 1 of the present invention;

FIG7 is a side cross-sectional view of the vacuum packaging device of the present invention;

FIG8 is a schematic diagram of the structure of the upper support of the vacuum packaging device of the present invention in the forward and reverse directions;

FIG9 is a schematic diagram of the assembly of the upper support, the driving device and the vacuum pumping assembly in the vacuum packaging device of the present invention;

FIG10 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;

FIG11 is a diagram showing the connection relationship between the upper support and the filter container in the vacuum packaging device of the present invention;

FIG12 is a diagram showing the connection relationship between the upper support and the filter screen in the vacuum packaging device of the present invention;

FIG13 is an exploded view of the upper support, the heating device and the sealing ring of the present invention;

FIG14 is a partial cross-sectional view of the connection between the upper support and the heating device of the present invention;

FIG15 is a schematic diagram of the connection relationship between the upper support and the driving device in the initial position of the present invention;

FIG16 is a schematic diagram of the connection relationship between the upper support and the driving device when the upper support is in the lowered position of the present invention;

17A is a schematic structural diagram of the lower support and the heat-insulating small door and the door body in a locked state in Embodiment 1 of the present invention;

17B is a schematic diagram of the structure of the lower support and the heat-insulating small door and the door body in the unlocked state in Example 1 of the present invention;

FIG17C is a schematic diagram of the structure of the lower support and the heat-insulating small door being removed from the door body in Embodiment 1 of the present invention;

FIG18 is a schematic diagram of the forward and reverse structures of the heat-insulating door and the lower support in the assembled state in Example 1 of the present invention;

FIG19 is an exploded view of the heat preservation door, the lower support and the lock hook assembly in Example 1 of the present invention;

FIG20 is a schematic diagram of the structure of the lock hook assembly installed on the thermal insulation door in Example 1 of the present invention;

FIG21 is a partial cross-sectional view of the lock hook assembly installed on the thermal insulation door in Example 1 of the present invention;

FIG22 is a perspective view of the lower locking hook in Embodiment 1 of the present invention;

FIG. 23 is a schematic diagram of the forward and reverse structures of the locking hook in Embodiment 1 of the present invention.

DETAILED DESCRIPTION

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

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

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

FIG1 is a perspective view of a specific embodiment of a refrigerator of the present invention; with reference to FIG1 , the refrigerator 1 of this embodiment has an approximately rectangular parallelepiped shape. The appearance of the refrigerator 1 is defined by a storage chamber 100 defining a storage space and a plurality of door bodies 200 disposed in the storage chamber 100, wherein, with reference to FIG2 , the door body 200 includes a door body shell 210 located outside the storage chamber 100, a door body liner 220 located inside the storage chamber 100, an upper end cover 230, a lower end cover 240, and an insulation layer located between the door body shell 210, the door body liner 220, the upper end cover 230, and the lower end cover 240; generally, the insulation layer is filled with foam material.

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

As shown in Figures 3 and 7, a vacuum packaging device 300 is provided on the door body 200 of the refrigerator, and the vacuum packaging device 300 is used to vacuum and plastic-seal the storage bag; the vacuum packaging device 300 can be set on the freezing door body 200A or the refrigerating door body 200B. Since the refrigerating door body 200B is located on the upper side, in order to comply with the user's usage habits, it is usually preferably set on the refrigerating door body 200B.

FIG. 7 to FIG. 23 are an embodiment of the vacuum packaging device 300. In this embodiment, as shown in FIG. 7, the vacuum packaging device 300 includes: a lower support 310, the lower support 310 is provided with a first opening cavity 311; an upper support 320, the upper support 320 is provided with a second opening cavity 321, and the upper support 320 can move toward or away from the lower support 310 under the drive of the driving device 340. After the upper support 320 moves toward the direction close to the lower support 310 and is in place, the first opening cavity 311 and the second opening cavity 321 are docked and sealed to form a vacuum zone 301. The vacuum packaging device 300 realizes the locking and unlocking of the lower support 310 and the upper support 320 by controlling the automatic lifting of the driving device 340, realizes automatic vacuum packaging, and improves the intelligence of the refrigerator.

In other embodiments, the vacuum packaging device 300 may also adopt an upper support 320 fixedly connected to the door body 200, and the driving device 340 drives the lower support 310 to move up and down to approach the upper support 320 to achieve a butt seal between the two.

Specifically, in order to improve the sealing performance of the vacuum zone 301, as shown in FIG7, a sealing portion for sealing the vacuum zone 301 is provided on the opposing 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 periphery of the first opening cavity 311, and the upper support 320 is provided with a second sealing groove 323 on the periphery of the second opening cavity 321. The first sealing groove 313 and the second sealing groove 323 are located opposite to each other and are provided with a sealing ring 350 inside. The two sealing rings 350 provided in the first sealing groove 313 and the second sealing groove 323 seal the vacuum zone 301 inside, thereby realizing reliable sealing of the vacuum zone 301.

Specifically, as shown in FIG8 , a limiting portion is provided in the first opening cavity 311 or the second opening cavity 321, which is used to limit the insertion position of the storage bag inserted into the vacuum zone 301, so as to prevent the opening position of the storage bag from extending out of the vacuum zone 301; specifically, the limiting portion is a limiting rib 322 provided in the first opening cavity 311 or the second opening cavity 321, and the height of the limiting rib 322 is greater than the depth of the first opening cavity 311 or the second opening cavity 321; the length of the limiting rib 322 is slightly less than the length of the first opening cavity 311 or the second opening cavity 321. When the user inserts the storage bag into the vacuum zone 301, the limiting rib 322 can prevent the storage bag from continuing to be inserted inward; in other embodiments, the vacuum zone 301 can also be provided with a position detection device, specifically, a microwave sensor or an infrared sensor can be used to detect whether the storage bag is inserted into the vacuum zone 301, and then send a signal to the controller whether the storage bag is in place, and the controller can control the vacuum pump to start according to the in place signal. By providing an in-place detection device, it is possible to automatically detect whether the storage bag is in place, and the controller then automatically controls the on and off of the vacuum pump.

The vacuum packaging device 300 also includes a vacuum pump 330, as shown in FIG9 and FIG10, the vacuum pump 330 includes a vacuum pump 331 connected to the vacuum zone 301 through a pipeline 335; the pipeline 335 is also provided with a pressure detection device 332 and a pressure relief device 333, wherein the pressure detection device 332 is specifically a pressure sensor, which is used to detect the pressure of the vacuum zone 301; the pressure relief device 333 is specifically an electric pressure relief valve, and when the electric pressure relief valve is opened, the vacuum zone 301 is depressurized. When the user performs vacuum packaging, the vacuum pump 331 is turned on to vacuum the vacuum zone 301, and when the pressure detection device 332 detects that the pressure of the vacuum zone 301 reaches the set negative pressure value, the controller controls the vacuum pump 331 to stop. The vacuum degree of the vacuum zone 301 can be controlled by setting a pressure sensor, and the vacuum pump 331 can be turned on and off according to the detection value of the pressure sensor, thereby ensuring the vacuum effect. After the vacuuming and packaging operations are completed, the vacuuming area 301 can be automatically controlled to release pressure by opening the electric pressure relief valve, so that the user can take out the storage bag. In order to prevent foreign matter in the vacuuming area 301 from entering the vacuum pump 331 through the pipeline 335, the pipeline 335 also includes a filtering protection device. In one embodiment, as shown in Figure 11, the filtering protection device is specifically a filtering container 334 connected in series to the pipeline 335. The upper end of the filtering container 334 is provided with an inlet and an outlet. The inlet is connected to the vacuuming area 301 through a pipeline, and the outlet is connected to the vacuum pump 331 through a pipeline; the foreign matter in the vacuuming area 301 enters the filtering container 334 through the pipeline 335 and is retained at the bottom of the filtering container 334, so as to prevent foreign matter from entering the vacuum pump 331. In order to facilitate the cleaning of the filter container 334, more specifically, the filter container 334 includes a tank body with an opening and an upper cover detachably connected to the tank body, and the inlet and outlet are arranged on the upper cover. When cleaning, the tank body can be removed for cleaning, thereby avoiding the problem of frequent disassembly and assembly of the pipeline 335 causing the sealing of the pipeline 335 to deteriorate.

In another embodiment, as shown in FIG. 12 , the filtering protection device is a filter screen 336 disposed on the pipeline 335. Specifically, in order to facilitate disassembly and assembly, the filter screen 336 is disposed at the vent hole 324 at the connection position between the upper support 320 and the pipeline 335. After the user moves the upper support 320 to the highest position, the filter screen 336 can be disassembled or cleaned from the bottom.

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

As shown in FIG7 , the vacuum packaging device 300 further includes a packaging area 302 located outside the vacuuming area 301. The packaging area 302 is used to perform plastic sealing on the storage bag after vacuuming is completed. The packaging area 302 is provided with a heat insulation pad 360 and a heating device 370 arranged opposite to each other. 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 the vacuuming area 301 that forms a seal with the lower support 310, the heat insulation pad 360 in the packaging area 302 abuts against the heating device 370. After vacuuming is completed, the storage bag can be quickly plastic sealed by the heating device 370 in the packaging area 302. After the heating device 370 works for a set time, the driving device 340 is controlled to drive the upper support 320 to move upward, and the user can pull out the storage bag to complete the plastic sealing of the storage bag.

More specifically, as shown in FIG. 13 and FIG. 14 , the heating device 370 includes a heating wire 371, and a heat conducting plate 373 is provided at the lower side of the heating wire 371 to diffuse the heating area of the heating wire 371 so as to increase the plastic sealing area of the storage bag and make the plastic sealing firm. The heating wire 371 extends along the length direction of the upper support 320 and is bent upward on both sides of the upper support 320. The free end of the heating wire 371 extending to the upper side of the upper support 320 is fixed to the upper support 320 through an insulating plate 372. Specifically, the insulating plate 372 is made of insulating material and is formed as a bent plate, which is coated on the outer side of the heating wire 371 to prevent the heating wire 371 from being exposed to the outside. Furthermore, the two free ends of the heating wire 371 are connected to two wires led out through the terminal 374 through a spring 375 respectively; by providing the spring 375, the heating wire 371 can be always in a tensioned state, so that the heating wire 371 has a higher flatness, and the heat conducting plate 373 located on the lower side of the heating wire 371 is in close contact with the storage bag, thereby avoiding the problem of poor contact and failure to be plastic-sealed at individual positions due to the unevenness of the heating wire 371.

In the above vacuum 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, so in this embodiment, the driving device 340 adopts an electric driving device. Specifically, as shown in Figures 10, 15 and 16, 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.

Specifically, as shown in Figure 10, a connecting plate 347 is provided between the upper support 320 and the driving device 340, the connecting plate 347 is threadedly connected to the upper support 320, and a guide groove 3471 is formed on the connecting plate 347, the lower end of the output rack 345 is inserted into the guide groove 3471, the guide groove 3471 and the lower end of the output rack 345 are respectively provided with long pin holes, the pin shaft 346 is penetrated into the pin holes of the guide groove 3471 and the output rack 345, the lower end surface of the output rack 345 and the bottom of the guide groove 3471 have a gap, and an elastomer 348 is provided in the gap.

As shown in FIG15 , in the initial position, the upper support 320 is located at the highest position; in the pressing stage, as shown in FIG16 , the driving device 340 drives the upper support 320 to move downward. In order to ensure that the lower support 310 and the upper support 320 are closely matched, the set rotation stroke of the motor 341 is usually used as the in-position judgment signal. Therefore, an elastic body 348 is arranged between the output rack 345 and the guide groove 3471 so that the upper support 320 can move downward to contact with the lower support 310. After that, the output rack 345 can continue to move downward for a distance, so that the elastic body 348 is compressed, thereby preventing the motor 341 from being blocked, protecting the motor 341, and keeping the pressing force stable.

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

In order to accurately control the movement displacement of the upper support 320 and then determine whether the upper support 320 is moved into place so that the vacuum zone 301 forms a sealed space; in the embodiment, the motor 341 is a stepper motor 341, and whether the upper support 320 is moved into place is determined by detecting the rotation stroke of the stepper motor 341. In another embodiment, a micro switch is provided on the lower support 310 or the upper support 320; after the upper support 320 is moved into place, the micro switch is triggered, and the controller controls the driving device 340 to stop and lock at the current position according to the feedback signal of the micro switch.

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

Specifically, as shown in Figures 9 and 10, the driving device 340 and the vacuum assembly 330 are both installed on the mounting base 305 located on the upper side of the upper support 320. The upper support 320 is provided with a vent hole 324 for communicating with the vacuum assembly 330. Among them, one side of the mounting base 305 is provided with three chambers, including a vacuum pump installation chamber 3051 located in the middle, and a driving device installation chamber 3052 located on the left and right sides. In order to maintain the overall aesthetics of the outer surface of the refrigerator door 200 and the convenience of using the vacuum packaging device 300, as shown in Figure 3, the door body shell 210 is provided with an inwardly recessed installation cavity 211, and the driving device 340 is connected to the upper support 320 and then connected to the mounting seat 305 by screws, and 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 installation cavity 211 by screws penetrated on the support ears on both sides of the mounting seat 305, and each component realizes modular assembly, and each part is not exposed on the outer surface, and the integrity of the device is good.

When the user uses the vacuum packaging device 300 to plastic-seal a food bag, especially when powdered food such as flour or liquid is plastic-seal, the powder or liquid may enter the vacuum zone 301 during vacuuming and eventually accumulate in the first opening 311 of the lower support 310; therefore, in order to facilitate the user to clean the food residues in the lower support 310, the lower support 310 is detachably installed relative to the door body 200.

There are multiple ways to install the lower support 310 on the door body 200. In this embodiment, as shown in FIGS. 17A to 17C, 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 be thermally insulated, a small heat preservation door 250 is provided on the inner side of the lower support 310 facing the storage chamber 100. As shown in FIG. 17C, a mounting hole 201 connecting the inside and the outside is provided on the door body 200, and the lower support 310 and the small heat preservation door 250 are plugged into the mounting hole 201 from the inner side of the door body 200, thereby achieving the disassembly and cleaning of the lower support 310 and the heat preservation performance of the door body 200.

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

In order to further ensure the thermal 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 shown in Figures 19 and 20, a small door seal 253 is provided between the heat-insulating small door 250 and the door body inner liner 220. Specifically, the first shell 251 is provided with a support arm 2512 at a position matching the door body inner liner 220, and the size of the support arm 2512 is larger than the size of the mounting hole 201. The support arm 2512 is provided with a mounting groove surrounding the mounting hole 201, and the small door seal 253 is installed in the mounting groove.

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

As shown in Figures 17A-17C, Figure 18 and Figure 19, the locking device 400 includes: a locking hook assembly arranged on the thermal insulation door 250, and a locking groove 221 arranged on the door body 220, the locking hook assembly includes a locking hook passed through the thermal insulation door 250, the locking hook can be switched between a first position and a second position, the locking hook can cooperate with the locking groove 221 to lock the thermal insulation door 250 when in the first position, and the locking hook is disengaged from the locking groove 221 when in the second position to unlock the thermal insulation door 250.

Specifically, in order to improve the reliability of the locking device 400, two locking grooves 221 and two locking hooks are respectively provided, wherein the locking grooves 221 are located at the upper and lower sides of the mounting hole 201. As shown in Figures 18 to 23, the locking hook assembly includes an upper locking hook 420, a lower locking hook 410 and a reset spring 430. As shown in Figure 22, the lower locking hook 410 includes a hooking portion 414 that cooperates with the locking groove 221 on the lower side, a hinged portion 412 that is rotatably connected to the heat preservation door 250, and a handle portion 411 located at the lower side of the heat preservation door 250, wherein the handle portion 411 and the hooking portion 414 are respectively located on both sides of the hinged portion 412. The lower locking hook 410 also includes a lower connecting portion 413 connected to the upper locking hook 420, wherein the lower connecting portion 413 extends along the upper side of the handle portion 411. Specifically, the end of the lower connecting portion 413 is formed into a T-shaped protrusion 4131. As shown in FIG. 23 , 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 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.

As shown in FIG. 18 , a guide positioning portion is formed on the inner surface of the second shell 252, and 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, and 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.

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.

In order to ensure the aesthetic appearance of the refrigerator door 200, as shown in Figures 1 and 2, a bar door 260 is provided on the refrigerator door 200 in the area where the vacuum packaging device 300 is located. As shown in Figures 4 to 6, the lower end of the bar door 260 is hinged to the door 200 through a damping device 280, which can ensure that the bar door 260 slowly flips to a position perpendicular to the surface of the door shell 210; the upper end of the bar door 260 is connected to the door shell 210 through a first push switch 212. The bar door 260 structure allows a storage bag containing food to be placed on the bar door 260 and then vacuum packaged when the bar door 260 is open, which is convenient for user operation. When the bar door 260 is closed, the aesthetic appearance of the door 200 is ensured.

The damping device 280 includes a damper body 280A and a rotating shaft 280B rotatably connected to the damper body 280A, wherein the rotating shaft 280B includes an extension section extending to the outside of the damper body.

The bar door 260 is provided with a mounting support 261, and the mounting support 261 is provided with a mounting hole, the damper body 280A is non-rotatably connected to the mounting hole, and the extension section of the rotating shaft is fixedly connected to the door body 200. More specifically, an axially extending anti-rotation protrusion is provided on the circumference of the damper body 280A, and an anti-rotation groove matching the protrusion is correspondingly provided on the mounting hole, and the damper body 280A is non-rotatably connected to the mounting support 261 after being inserted into the mounting hole.

As an embodiment, as shown in Fig. 4 and Fig. 5, the extension section is fixedly connected to the door body 200 via a connecting assembly, and the connecting assembly includes a sleeve 281 and a connecting plate 282. One end of the sleeve 281 is connected to the extension section in a non-rotatable manner, and the other end is connected to the connecting plate 282 in a non-rotatable manner; the other end of the connecting plate 282 is threadedly connected to the door body; and the sleeve is rotatably connected to the mounting hole. By providing the sleeve 281 and the connecting plate 282, the connection strength between the damping device and the door body can be increased, so as to avoid the rotation axis 280B of the damping device being directly connected to the door body and causing the position of the bar door to change due to insufficient strength.

There is not only one way to connect one end of the sleeve 281 to the extension section without relative rotation. Specifically, as shown in FIG. 5 , the extension section is formed into a flat cylindrical shape, and a first connecting hole corresponding to the extension section is provided on the sleeve 281. The extension section is inserted into the first connecting hole and fixedly connected to the extension section by a pin shaft.

A second connection hole is formed at one end of the shaft sleeve 281 that cooperates with the connection plate 282, and the connection plate is inserted into the inner side of the second connection hole.

As another embodiment, as shown in FIG. 6 , the extension section of the rotating shaft 280B extends out of the outer surface of the mounting bracket and is directly connected to the door body via screws.

As shown in FIG3 , a door opening and closing detection device 290 for detecting the opening and closing of the bar door 260 is provided at the position corresponding to the door body 200; the control unit determines the opening or closing of the electric signal of the driving device and the vacuum component according to the signal of the door opening and closing detection device 290. Specifically, when the door opening and closing detection device 290 detects that the bar door 260 is in an open state, the electric signal of the driving device and the vacuum component is turned on; when the door opening and closing detection device 290 detects that the bar door 260 is in a closed state, the electric signal of the driving device and the vacuum component is turned off. In this way, by opening and closing the bar door 260, it is possible to identify whether the user is using the device, control the power on and off of the device, achieve energy saving and safety protection of the device, and improve the convenience and safety of user use.

Specifically, the bar door switch detection device includes a magnetic switch 290, which includes a switch body 291 installed on the door body side and a magnetic attraction member 292 installed at a corresponding position of the bar door 260. The magnetic switch 290 is located on the non-hinged side of the bar door.

As shown in FIG. 2 , the inner side of the bar door 260 also includes an operation panel 270 covering the outer side of the installation cavity. The operation panel 270 is formed with an insertion port 271, and the lower surface of the insertion port 271 is flush with the upper surface of the first opening cavity 311. In this way, the vacuum packaging device 300 can be hidden as a whole behind the operation panel 270. When the user performs vacuum plastic sealing, the storage bag opening can be directly inserted from the insertion port 271 of the operation panel 270, and directly extended to the upper surface of the first opening cavity 311. When the upper support 320 moves downward, the opening of the storage bag can be placed in the vacuum zone 301. Specifically, the operation panel 270 is detachably connected to the door body shell 210. The operation panel 270 is also provided with a display control device 272, which includes an indicator device for displaying the working status of the vacuum packaging device 300; and a control button for controlling the start or stop of the vacuum packaging device 300. The user can determine whether to extract the storage bag based on the working status of the vacuum packaging device 300 displayed on the display control device 272 .

Furthermore, the control unit determines the switch of the electrical signal of the display control device 272 according to the signal of the door opening and closing detection device 290. When the door opening and closing detection device 290 detects that the bar door 260 is in the closed state, the control system sends a power-off signal to the display control device 272. At this time, since the display control device 272 is powered off, the vacuum packaging device is in an energy-saving and safe state; when the user needs to perform vacuuming, the bar door 260 is opened, and the magnet 292 in the bar door 260 moves away from the switch body 291 with the bar door 260, and a power-on signal is sent to the display control device 272. At this time, the display control device 272 is powered on, and the user can control the vacuum packaging device through the control button of the display control device 272 to put it in a working state, and the user uses the vacuum packaging device 300 to perform vacuuming operation.

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

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

Claims (7)

1. A refrigerator, comprising a door body, wherein the door body comprises a door body outer shell, a door body inner shell, and an insulating layer located between the door body outer shell and the door body inner shell; A cavity is formed in the door body, and a vacuum packaging device is provided in the cavity. The vacuum packaging device is used to vacuumize and plastic-seal the storage bag, and is characterized in that: the vacuum packaging device includes: An upper support and a lower support, wherein the lower support is detachably fixedly installed relative to the door body, the lower support is provided with a first opening cavity, and the upper support is provided with a second opening cavity, and the upper support can be moved toward or away from the lower support under the drive of a driving device, and after the upper support moves toward the direction close to the lower support, the first opening cavity is butted against the second opening cavity and sealed to form a vacuum zone, and the vacuum zone is connected to a vacuum assembly; The vacuum packaging device also includes a packaging area located outside the vacuuming area, the packaging area is used to perform plastic sealing on the storage bag after the vacuuming is completed, and a heat insulation pad and a heating device are arranged opposite to each other in the packaging area, the heating device is installed in the groove on the lower surface of the upper support, and the heat insulation pad is installed in the groove on the upper surface of the lower support; The outer side of the door body is provided with a bar door at the area where the vacuum packaging device is located, and the bar door is used to open or close the front opening of the cavity. A door opening and closing detection device for detecting the opening and closing of the bar door is provided at the position corresponding to the bar door and the door body; The door opening and closing detection device, the driving device and the vacuum pumping component are electrically connected to a control unit respectively, and the control unit sends a control signal after receiving the detection signal of the door opening and closing detection device to turn on or off the electrical signals of the driving device and the vacuum pumping component; The lower support can be detachably mounted on the door body from the inner side of the door body; The lower support is provided with a small heat preservation door on the inner side of the storage chamber, and a mounting hole communicating with the inside and the outside is provided on the door body, and the lower support and the small heat preservation door are plugged into the mounting hole from the inner side of the door body; The heat-insulating door is formed by a first shell body and a second shell body having an open cavity structure and a heat-insulating member arranged between the first shell body and the second shell body; The first shell is provided with an extension arm in a direction away from the second shell, and the lower support is formed on the extension arm; A locking device is provided between the thermal insulation door and the door body, and the locking device is used to lock or unlock the thermal insulation door on the door body; The locking device comprises a lock hook assembly arranged on the thermal insulation door and a locking groove arranged on the inner liner of the door body; The lower end of the bar door is hinged to the door body through a damping device, and the upper end is connected to the door body through a locking device; The damping device includes a damper body and a rotating shaft rotatably connected to the damper body, wherein the rotating shaft includes an extension section extending to the outside of the damper body; a mounting support is provided on the bar door, the mounting support is provided with a mounting hole, the damper body is non-rotatably connected to the mounting hole, and the extension section of the rotating shaft is fixedly connected to the door body. 2. The refrigerator according to claim 1 is characterized in that: the bar door switch detection device includes a magnetic switch, the magnetic switch includes a switch body installed on the door body side, and a magnetic attraction part installed at a corresponding position of the bar door, and the magnetic switch is located on the non-hinged side of the bar door. 3. The refrigerator according to claim 1 is characterized in that: the vacuum pump assembly includes a vacuum pump connected to the vacuum zone through a pipeline; the pipeline is also provided with a pressure detection device for detecting the pressure of the vacuum zone and a pressure relief device for controlling the pressure relief of the vacuum zone. 4. The refrigerator according to claim 1 is characterized in that: the driving device includes a motor and a transmission mechanism, the transmission mechanism is used to convert the rotational motion of the motor into linear motion, and the output end of the transmission mechanism is connected to the upper support or the lower support. 5. The refrigerator according to claim 1 is characterized in that: the extension section is fixedly connected to the door body through a connecting assembly, the connecting assembly includes a sleeve and a connecting plate, one end of the sleeve is connected to the extension section in a non-rotatable manner, and the other end is connected to the connecting plate in a non-rotatable manner; the other end of the connecting plate is threadedly connected to the door body; the sleeve is rotatably connected to the mounting hole. 6. The refrigerator according to claim 1 is characterized in that: the driving device is provided in two, and the two driving devices are symmetrically arranged on both sides of the upper support; the driving device and the vacuum pumping assembly are installed on a mounting seat, the door body shell is provided with an inwardly recessed mounting cavity, and the mounting seat and the upper support are installed in the mounting cavity. 7. The refrigerator according to claim 6 is characterized in that it also includes an operation panel covering the outside of the installation cavity, the operation panel is formed with an insertion port suitable for inserting a front packaging bag, and the operation panel is also provided with a display and control device, the display and control device includes an indicator device for displaying the working status of the vacuum packaging device and a control button for controlling the operation of the vacuum packaging device; the control unit determines whether the electrical signal of the display and control device is turned on or off according to the door opening and closing detection device.