Refrigerator

Abstract

The application provides a refrigerator, relates to the field of electronic equipment, and achieves the purpose of preserving food. The refrigerator comprises a refrigerator body, an air extraction joint and an air extraction device. The refrigerator body is internally provided with a refrigeration chamber and an air duct for air supply of the refrigeration chamber. At least one wall of the refrigeration chamber is provided with an air duct cover plate which at least partially shields the air duct. The air extraction joint is arranged on the air duct cover plate and can be detachably communicated with a joint on a preservation box. The air extraction device is arranged in the refrigerator body, is communicated with the air extraction joint, and can extract air from the preservation box through the air extraction joint to reduce the air pressure in the preservation box, thereby reducing the deterioration speed of the items in the refrigerator to a certain extent. The air extraction device is arranged in the refrigerator body, the air extraction joint is arranged in the refrigeration chamber, and the air extraction device is communicated with the air extraction joint arranged on the air duct cover plate. Compared with arranging the air extraction joint at other positions of the refrigeration chamber, the air extraction joint and the air extraction device can prevent the heat preservation property of the refrigeration chamber from being damaged when being communicated.

Description

Technical Field

[0001] This application relates to the field of electronic devices, and more particularly to a refrigerator. Background Technology

[0002] Refrigerators prevent food from spoiling by keeping it at low temperatures. However, food will still react with the air in the refrigerator during the refrigeration or freezing process and gradually deteriorate. As people's requirements for quality of life gradually increase, simply refrigerating or freezing food is no longer sufficient to meet their needs. Summary of the Invention

[0003] One objective of this application is to reduce the rate at which items in a refrigerator spoil to a certain extent.

[0004] To address the aforementioned problems, this application provides a refrigerator, wherein the refrigerator body has a refrigerator compartment and an air duct for supplying air to the refrigerator compartment, and at least one wall inside the refrigerator compartment has an air duct cover that at least partially covers the air duct; an air extraction connector is disposed on the air duct cover and can be detachably connected to a connector on a food storage container; and an air extraction device is disposed in the refrigerator body, connected to the air extraction connector, and can extract air from the food storage container through the air extraction connector.

[0005] In one embodiment of this application, the air extraction device includes: an air extraction pump disposed within the refrigerator body; and an air extraction pipe including a first air extraction end and a second air extraction end opposite to each other, wherein the first air extraction end is connected to the air extraction pump within the refrigerator body, and the second air extraction end is connected to the air extraction connector at the air duct cover.

[0006] In one embodiment of this application, the refrigerator body is provided with a compressor compartment for accommodating the compressor, the vacuum pump is disposed in the compressor compartment, and the first vacuum end is connected to the vacuum pump in the compressor compartment.

[0007] In one embodiment of this application, the duct cover is provided with an air outlet, and the exhaust connector is disposed at the air outlet.

[0008] In one embodiment of this application, the exhaust connector is disposed on the side of the air vent near the refrigerator compartment, and the second end passes through the air vent and communicates with the exhaust connector.

[0009] In one embodiment of this application, the exhaust connector includes: a connector disposed on the inner wall of the refrigerator compartment, corresponding to the food storage box; and a connector tube including a first connector end and a second connector end, wherein the first connector end is connected to the connector in the refrigerator compartment, and the second connector end is connected to the second exhaust end at the air vent.

[0010] In one embodiment of this application, the air extraction connector is rotatably connected to the air duct cover; the side of the air extraction connector facing away from the food storage container is provided with a magnetic element, and when the side of the air extraction connector facing away from the food storage container is in contact with the inner wall, the air extraction connector and the air duct cover are magnetically attracted.

[0011] In one embodiment of this application, the exhaust connector includes: a first connecting portion disposed on the side of the air vent near the air duct and connected to the second exhaust end; and a second connecting portion disposed on the side of the air vent near the refrigerator compartment and connected to the food storage container.

[0012] In one embodiment of this application, the first connecting portion and the second connecting portion are rotatably connected; the surface of the second connecting portion facing away from the food storage box is provided with a magnetic element, and when the surface of the second connecting portion facing away from the food storage box is in contact with the air duct cover, the second connecting portion and the air duct cover are magnetically attracted.

[0013] In one embodiment of this application, the vacuum connector includes: a connector seal disposed on the surface of the vacuum connector for communicating with the food storage container, wherein when the vacuum connector communicates with the food storage container through the connector of the food storage container, the connector seal covers the gap between the vacuum connector and the connector of the food storage container and is disposed between the vacuum connector and the food storage container.

[0014] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0015] The refrigerator proposed in this application includes a refrigerator body, an air extraction connector, and an air extraction device. The refrigerator body has a refrigerator compartment and an air duct for supplying air to the refrigerator compartment. At least one wall inside the refrigerator compartment has an air duct cover that at least partially covers the air duct. The air extraction connector is located on the air duct cover and can be detachably connected to a connector on a food storage container. The air extraction device is located inside the refrigerator body and is connected to the air extraction connector. It can extract air from the food storage container through the air extraction connector to reduce the air pressure inside the food storage container, which can reduce the rate of spoilage of the items in the refrigerator to a certain extent. The air extraction device is located in the refrigerator body, and the air extraction connector is located inside the refrigerator compartment. The air extraction device is connected to the air extraction connector located on the air duct cover. Compared with placing the air extraction connector in other locations in the refrigerator compartment, it can prevent the air extraction connector and the air extraction device from damaging the insulation of the refrigerator compartment when they are connected. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the refrigerator structure provided in an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the refrigerator structure provided in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the duct cover structure provided in an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the food storage container installation structure provided in an embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the installation of the air extraction connector provided in the embodiments of this application;

[0021] Figure 6 This is an exploded view of the food storage container structure provided in an embodiment of this application;

[0022] Figure 7 This is a schematic diagram illustrating the usage state of the food storage container provided in the embodiments of this application;

[0023] Figure 8 A cross-sectional structural diagram of the air extraction connector, covering device, and food storage container provided in the embodiments of this application;

[0024] Figure 9 A cross-sectional structural diagram of the covering device and the food storage container provided in the embodiments of this application;

[0025] Figure 10 This is a schematic diagram of the box lid structure provided in an embodiment of this application;

[0026] Figure 11 This is a cross-sectional structural diagram of the covering device and the box lid provided in the embodiments of this application.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1. Refrigerator body; 11. Refrigerator compartment; 12. Compressor compartment; 13. Air duct cover; 131. Air vent; 14. Food storage container fixing parts;

[0029] 2. Food storage container; 21. Container lid; 211. Container lid cover; 212. Snap-fit ​​protrusion; 213. Air extraction hole; 214. Ventilation groove; 215. Ventilation protrusion; 216. Covering protrusion; 22. Container body; 23. Sealing strip; 24. First locking component; 25. Second locking component.

[0030] 3. Air extraction connector; 31. Connector; 32. Connector tube; 33. Air extraction hood; 34. First seal; 341. First sealing groove; 35. Second sealing groove; 36. Claw; 37. Magnetic component; 38. Connector seal.

[0031] 4. Covering device; 41. Positioning component; 411. Limiting part; 42. Blocking component; 421. Blocking groove.

[0032] 5. Air extraction pipe, 6. Air pump, 7. Trunnion seat. Detailed Implementation

[0033] Typical embodiments embodying the features and advantages of this application will be described in detail in the following description. It should be understood that this application can have various variations in different embodiments, all of which do not depart from the scope of this application, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this application.

[0034] This embodiment provides a refrigerator, such as Figures 1 to 11 As shown, the refrigerator includes a refrigerator body 1, an air extraction connector 3, and an air extraction device. The refrigerator body 1 includes a refrigerator compartment 11 and an air duct for supplying air to the refrigerator compartment 11. At least one wall inside the refrigerator compartment 11 is provided with an air duct cover 13 that at least partially covers the air duct. The air extraction connector 3 is disposed on the air duct cover 13 and can be detachably connected to a connector on a food storage box 2. The air extraction device is disposed inside the refrigerator body 1, connected to the air extraction connector 3, and can extract air from the food storage box 2 through the air extraction connector 3.

[0035] In one embodiment of this application, there may be multiple food storage boxes 2. The food storage boxes 2 can be placed in the refrigerator compartment 11 or taken out of the refrigerator compartment 11. The food storage boxes 2 are provided with connectors. The air extraction connector 3 is provided on the air duct cover 13. The air extraction connector 3 is connected to the food storage boxes 2 in the refrigerator compartment 11 through the connectors of the food storage boxes 2. The air extraction device is provided in the refrigerator body 1 and is connected to the air extraction connector 3. Air is extracted from the food storage boxes 2 through the air extraction connector 3.

[0036] In one embodiment of this application, the refrigerator can be a frost-free refrigerator. An air duct can be provided between the refrigeration unit and the refrigerator compartment 11. Cold air generated by the refrigeration unit is transmitted to the refrigerator compartment 11 through the air duct to lower the temperature in the refrigerator compartment 11. An air duct cover 13 can be provided at the air duct opening connecting the air duct to the refrigerator compartment 11, and an air outlet 131 can be provided on the air duct cover 13. Figure 1 As shown, the hot air in the refrigerator compartment 11 and the cold air generated by the refrigeration unit can be exchanged through the air vent 131.

[0037] In one embodiment of this application, the air vent 131 on the air duct cover 13 may include an air inlet and an air outlet. Hot air in the refrigerator compartment 11 is discharged from the refrigerator compartment 11 through the air outlet, and cold air enters the refrigerator compartment 11 through the air inlet. Correspondingly, the air inlet may be connected to the air inlet pipe, and the air outlet may be connected to the air outlet pipe to separate the air inlet and the air outlet, thereby better reducing the temperature in the refrigerator compartment 11.

[0038] In one embodiment of this application, such as Figure 2 and Figure 3As shown, the air extraction device may include an air pump 6 and an air extraction pipe 5. The air pump 6 may be located outside the refrigerator compartment 11 in the refrigerator body 1. The air extraction pipe 5 may include a first air extraction end and a second air extraction end. The first air extraction end is located outside the refrigerator compartment 11 in the refrigerator body 1 and is connected to the air pump 6. The second air extraction end is connected to the air extraction connector 3 at the air duct cover plate 13.

[0039] In this embodiment, by placing the air pump 6 outside the refrigerator compartment 11 in the refrigerator body 1, space in the refrigerator compartment 11 can be saved, and the air pump 6 can be prevented from being accidentally stopped by the user.

[0040] In one embodiment of this application, the refrigerator body 1 may be provided with a compressor compartment 12 for accommodating the compressor, and an air pump 6 is disposed in the compressor compartment 12, with a first air extraction end communicating with the air pump 6 in the compressor compartment 12. The compressor in the compressor compartment 12 needs to be connected to a power source, and the air pump 6 also needs to be connected to a power source. By placing the air pump 6 and the compressor together, the structure for connecting the air pump 6 to an external power source can be simplified.

[0041] In one embodiment of this application, the evacuation pipe 5 can be fixed in the refrigerator body 1 by an evacuation pipe fastener.

[0042] In one embodiment of this application, the suction pipe fixing component may be a snap-fit ​​connector.

[0043] In one embodiment of this application, the exhaust connector 3 is located at the air outlet 131 of the duct cover 13. An insulation layer can be installed on the duct cover 13. The exhaust connector 3 located at the air outlet 131 will not hinder the installation of the insulation layer on the duct cover 13.

[0044] In one embodiment of this application, the insulation layer may be an insulation material covering the side of the air duct cover 13 away from the inner liner 11, and the insulation layer may be a foam layer.

[0045] In one embodiment of this application, the exhaust connector 3 can be set on the side of the air vent 131 near the refrigerator compartment 11, and the second end can pass through the air vent 131 and communicate with the exhaust connector 3. The exhaust pipe 5 and the exhaust connector 3 are connected by the existing air vent 131 on the air duct cover 13, without changing the structure of the air duct cover 13, thereby saving costs.

[0046] In one embodiment of this application, the exhaust pipe 5 can use the air inlet pipe or air outlet pipe in the above embodiment. The connection positions at both ends of the air inlet pipe or air outlet pipe can be changed, which can further save design costs.

[0047] In one embodiment of this application, such as Figure 4As shown, the air extraction connector 3 may include: a connector 31 and a connector tube 32 connected to each other. The connector 31 may be set on the inner wall of the refrigerator compartment 11, corresponding to the food storage container 2. The connector tube 32 may include a first connector end and a second connector end. The first connector end is connected to the connector 31 in the refrigerator compartment 11, and the second connector end is connected to the second air extraction end at the air vent 131. The connector tube 32 may extend to any position in the refrigerator compartment 11, so that the connector 31 connected to the first connector end can be set at any position in the refrigerator compartment 11, and the air extraction connector 3 can adapt to the food storage container 2 with the connector at any position.

[0048] In one embodiment of this application, the connector 32 can be a flexible hose, and a connector 32 storage piece can be provided on the air duct cover 13 or the inner wall of the refrigerator compartment 11. When the vacuum connector 3 is in use, the connector 31 connected to the flexible hose can be connected to the food storage box 2 at any position. When the vacuum connector 3 is not in use, the flexible hose can be stored in the connector 32 storage piece, so that the vacuum connector 3 can be connected to the food storage box 2 at any position in the refrigerator compartment 11 while saving space.

[0049] In one embodiment of this application, the exhaust connector 3 can be rotatably connected to the air duct cover 13 so that the exhaust connector 3 can be connected to the connectors of the food storage container 2 located in multiple positions.

[0050] In one embodiment of this application, the exhaust connector 3 can be flipped and connected to the air duct cover 13 so that the exhaust connector 3 can communicate with the connectors of the food storage box 2 provided on the top and side walls of the food storage box 2.

[0051] In one embodiment of this application, such as Figure 5 As shown, there can be multiple air extraction connectors 3. The air extraction connectors 3 can be fixedly connected to the air duct cover 13. The side of the air extraction connector 3 that connects to the food storage container 2 can be set away from the inner wall of the refrigerator compartment 11, so that the side of the air extraction connector 3 that connects to the food storage container 2 faces the storage area of ​​the refrigerator compartment 11. When the food storage container 2 is placed in the storage area of ​​the refrigerator compartment 11, the air extraction connector 3 can be connected to the food storage container by bringing the connector of the food storage container 2 close to the inner wall of the refrigerator compartment 11.

[0052] In one embodiment of this application, such as Figure 7 As shown, the side of the air extraction connector 3 facing away from the food storage container 2 may be provided with a magnetic element 37. When the side of the air extraction connector 3 facing away from the food storage container 2 is in contact with the inner wall, the air extraction connector 3 can be magnetically attracted to the air duct cover 13 to fix the air extraction connector 3.

[0053] In one embodiment of this application, the air extraction connector 3 can rotate on the air duct cover 13 along the position where the air extraction connector 3 connects to the air duct cover 13, so that the air extraction connector 3 can communicate with the connectors of the food preservation box 2 provided on the top and side of the food preservation box 2.

[0054] In one embodiment of this application, a trunnion seat 7 may be provided on the air duct cover 13, and the air extraction connector 3 may be connected to the refrigerator body 1 through the trunnion seat 7.

[0055] In other embodiments of this application, the exhaust connector 3 may include a first connecting part and a second connecting part that are interconnected. The first connecting part is located on the side of the air vent 131 near the air duct and is connected to the second exhaust end. The second connecting part is located on the side of the air vent 131 near the refrigerator compartment 11 and is connected to the food storage box 2. Part of the exhaust connector 3 is located in the refrigerator compartment 11 and the other part is located in the air duct. The exhaust connector 3 itself passes through the air vent 131. The exhaust pipe 5 is connected to the exhaust connector 3 in the air duct. The connecting part of the exhaust pipe 5 and the exhaust connector 3 can be hidden in the air duct, which can save space in the refrigerator compartment 11.

[0056] In other embodiments of this application, the first connecting part can be rotatably connected to the second connecting part, and the surface of the second connecting part away from the food storage box 2 can be provided with a magnetic element. When the surface of the second connecting part away from the food storage box 2 is in contact with the air duct cover 13, the second connecting part can be magnetically attracted to the air duct cover 13.

[0057] In other embodiments of this application, the first connecting part can be flipped to connect with the second connecting part so that the vacuum connector 3 can communicate with the connectors of the food storage box 2 provided on the top and side walls of the food storage box 2.

[0058] In other embodiments of this application, the first connecting part can be horizontally rotatably connected to the second connecting part so that the vacuum connector 3 can communicate with the connectors of the food storage box 2 provided on the top and side walls of the food storage box 2.

[0059] In one embodiment of this application, a food storage area can be provided inside the refrigerator body 1 to accommodate a food storage box 2. The food storage box 2 can be connected to the refrigerator door so that the food storage box 2 can be taken out when the refrigerator door is opened, making it convenient to put the food storage box 2 in and take it out.

[0060] In one embodiment of this application, a food storage container fixing member 14 may be provided in the refrigerator compartment 11, and the food storage container 2 may be detachably connected to the food storage container fixing member 14 so that the food storage container 2 can be fixed or removed from the refrigerator compartment 11.

[0061] In one embodiment of this application, the food storage container fixing member 14 can be a food storage container 2 receiving platform, and the food storage container 2 can be placed on the food storage container 2 receiving platform.

[0062] In other embodiments of this application, the food storage area may also be located in other positions within the refrigerator body 1, which is not limited here.

[0063] In one embodiment of this application, such as Figure 6As shown, the food storage container 2 may include a lid 21, a body 22, and a sealing strip 23 disposed on the edge of the lid 21. The lid 21 may be snapped or rotated to the body 22.

[0064] In one embodiment of this application, the sealing strip 23 may be a rubber strip disposed at the connection between the lid 21 and the body 22. When the lid 21 closes the body 22, the opening of the lid 21 presses against the side of the rubber strip facing the lid 21, and the opening of the body 22 presses against the side of the rubber strip facing the body 22. The rubber strip deforms, and the part of the rubber strip that is not compressed protrudes relative to the part of the rubber strip that is compressed. The protrusion of the rubber strip covers the recess at the connection between the lid 21 and the body 22, and the rubber strip covers the gap at the connection between the lid 21 and the body 22, thus sealing the connection between the lid 21 and the body 22.

[0065] In other embodiments of this application, the sealing strip 23 may be provided with a sealing groove for the lid 21 corresponding to the opening edge of the lid 21, and the opening of the lid 21 may be inserted into the sealing groove of the lid 21. The sealing strip 23 may be provided with a sealing groove for the box body 22 corresponding to the opening edge of the box body 22, and the opening of the box body 22 may be inserted into the sealing groove of the lid 21, so that the gap between the box body 22 and the lid 21 can be sealed.

[0066] In other embodiments of this application, the sealing strip 23 may be fixed at the opening of the lid 21 or the opening of the body 22 to prevent the sealing strip 23 from being lost.

[0067] In one embodiment of this application, the food storage box 2 may be provided with a lid cover 211 facing the box body 22. The lid cover 211 may be arranged around the opening of the lid 21 and may extend beyond the edge of the lid 21 toward the box body 22 to cover the connection gap between the lid 21 and the box body 22.

[0068] In one embodiment of this application, the lid cover 211 may be a lid cover plate disposed inside the food storage box 2 and surrounding the opening of the lid 21, and the lid cover plate may be connected to the lid 21.

[0069] In one embodiment of this application, a blocking and limiting member may be provided on the box body 22 corresponding to the box lid blocking member 211. When the box lid 21 closes the box body 22, the box lid blocking member 211 contacts the blocking and limiting member, which can prevent the rubber strip provided at the connection between the box lid 21 and the box body 22 from being excessively deformed, and avoid affecting the sealing effect of the sealing strip 23 on the food storage box 2.

[0070] In one embodiment of this application, the food storage box 2 may further include a first locking member 24, and the outer surfaces of the lid 21 and the body 22 may be provided with a second locking member 25 corresponding to the first locking member 24.

[0071] In one embodiment of this application, the first locking member 24 may be a locking groove, and the second locking member 25 may include a first locking protrusion disposed on the outer surface of the lid 21 and a second locking protrusion disposed on the outer surface of the body 22. The first locking protrusion and the second locking protrusion can be engaged together in the locking groove, and the locking groove fixes the relative position of the lid 21 and the body 22 by fixing the first locking protrusion and the second locking protrusion.

[0072] In one embodiment of this application, the box body 22 is used to hold items that need to be kept fresh. The connector of the food preservation box 2 can be a suction hole 213. The suction hole 213 can be set on the lid 21. When suctioning, the items in the box body 22 can prevent the suction hole 213 from being blocked.

[0073] In one embodiment of this application, the refrigerator may further include a covering device 4, which is movably connected to the food storage box 2, and the corresponding air extraction hole 213 is disposed between the air extraction connector 3 and the connector of the food storage box 2, for covering the air extraction hole 213.

[0074] In one embodiment of this application, an air extraction hood 33 may be provided in the air extraction connector 3, and the air extraction hood 33 covers the edge of the cover device 4 and covers the food storage box 2.

[0075] In one embodiment of this application, the outer surfaces of the food storage container 2 and the fume extraction hood 33, as well as the fume extraction hood 33, can cover the covering device 4. This allows the air drawn by the fume extraction connector 3 through the fume extraction hood 33 to come from the area covered by the fume extraction hood 33, enabling the fume extraction connector 3 to draw air from the edge of the covering device 4 within the area covered by the fume extraction hood 33. Consequently, air inside the food storage container 2 can enter the fume extraction hood 33 through the fume extraction hole 213 and the edge of the covering device 4, creating a negative pressure inside the food storage container 2. Figure 8 The arrows in the enlarged detail diagram indicate the airflow direction in the lid 21, the covering device 4, and the air extraction connector 3. Figure 8 It can be seen that the air flows from inside the food storage container 2 through the gap between the covering device 4 and the air extraction hole 213, then through the edge of the covering device 4 to the air extraction hood 33, and then from the air extraction hood 33 to the air extraction pipe 5, so as to expel the air from inside the food storage container 2.

[0076] In one embodiment of this application, the vacuum hood 33 may include a bottom connected to the vacuum pipe 5 and a wall extending from the bottom to the food storage container 2. The outer surface, bottom, and wall of the food storage container 2 corresponding to the vacuum hood 33 can cover the covering device 4.

[0077] In other embodiments of this application, when the covering device 4 itself has no gaps, the exhaust hood 33 may only cover the edge of the covering device 4 and not the center of the covering device 4, so as to save the material of the exhaust hood 33.

[0078] In one embodiment of this application, the air extraction connector 3 may further include a first sealing member 34, which is provided to cover the gap between the air extraction hood 33 and the food storage container 2, thereby sealing the gap between the air extraction hood 33 and the food storage container 2 and further preventing the air extraction connector 3 from drawing air outside the coverage area of ​​the air extraction hood 33.

[0079] In one embodiment of this application, the first sealing member 34 can be detachably connected to the food storage container 2. The first sealing member 34 can be snapped into the food storage container 2 to facilitate cleaning of the first sealing member 34 and to facilitate the return of the food storage container 2 from negative pressure to normal air pressure, making it easier to open the food storage container 2.

[0080] In one embodiment of this application, the first sealing member 34 can be engaged with the food storage container 2 by means of the claw 36, and the food storage container 2 can be provided with a engagement protrusion 212 facing the first sealing member 34 to cooperate with the claw 36.

[0081] In one embodiment of this application, the first sealing member 34 may be arranged around the connection between the vacuum hood 33 and the food storage container 2 to better seal the gap between the vacuum hood 33 and the food storage container 2.

[0082] In one embodiment of this application, a first sealing member 34 may be disposed between the fume extraction cover 33 and the food storage container 2; the end of the first sealing member 34 near the fume extraction cover 33 may be provided with a first sealing groove 341, the opening of the fume extraction cover 33 may be inserted into the first sealing groove 341, the opening of the fume extraction cover 33 is sandwiched in the middle by the two groove walls of the first sealing groove 341, the two groove walls of the first sealing groove 341 can prevent air from flowing out from the opening of the fume extraction cover 33, the food storage container 2 may be provided with a second sealing groove 35 adapted to the first sealing member 34, the end of the first sealing member 34 away from the fume extraction cover 33 may be inserted into the second sealing groove 35, the end of the first sealing member 34 away from the fume extraction cover 33 is sandwiched in the middle by the two groove walls of the second sealing groove 35, the two groove walls of the second sealing groove 35 can prevent air from flowing out from the end of the first sealing member 34 away from the fume extraction cover 33, through the cooperation of the first sealing member 34 and the second sealing groove 35, the gap between the fume extraction cover 33 and the food storage container 2 is sealed.

[0083] In other embodiments of this application, the second sealing groove 35 can be a blind hole provided on the outer surface of the food storage box 2, with the blind hole facing the first sealing member 34. The end of the first sealing member 34 away from the suction hood 33 can be inserted into the blind hole. The hole wall of the blind hole can block the gap between the end of the first sealing member 34 away from the suction hood 33 and the bottom of the blind hole on the surface of the food storage box 2, so as to prevent air from entering the suction hood 33 from the gap between the end of the first sealing member 34 away from the suction hood 33 and the surface of the food storage box 2.

[0084] In other embodiments of this application, the first sealing member 34 may be a baffle provided for the gap between the corresponding fume extraction hood 33 and the food storage container 2. The baffle can prevent air outside the coverage area of ​​the fume extraction hood 33 from entering the fume extraction hood 33 through the gap between the fume extraction hood 33 and the food storage container 2.

[0085] In one embodiment of this application, such as Figure 7 As shown, the vacuum connector 3 may include a connector seal 38, which is disposed on the surface of the vacuum connector 3 used to connect to the food storage container 2. When the vacuum connector 3 is connected to the food storage container 2 through the vacuum hole 213, the connector seal 38 covers the gap between the vacuum connector 3 and the vacuum hole 213 and is disposed between the vacuum connector 3 and the food storage container 2.

[0086] In one embodiment of this application, the outer surface of the food storage container 2 may be provided with a connector seal 38 corresponding to the edge of the vacuum connector 3. The connector seal 38 may be a connector sealing groove provided on the edge of the outer surface of the food storage container 2 facing the vacuum connector 3. The groove wall of the connector sealing groove will block the gap between the edge of the vacuum connector 3 and the food storage container 2 to prevent air from entering the vacuum connector 3 from the edge of the vacuum connector 3, thereby further increasing the airtightness of the vacuum connector 3.

[0087] In one embodiment of this application, reference is made to Figure 9 As shown, the covering device 4 is movably connected to the food storage container 2. The covering device 4 can move relative to the food storage container 2, but will not detach from the food storage container 2 under the action of the air extraction connector 3.

[0088] In one embodiment of this application, the covering device 4 corresponds to the suction hole 213. The covering device 4 can be disposed between the suction hole 213 and the suction cover 33. The covering device 4 is used to cover the suction hole 213. The negative pressure of the food storage container 2 after suction is completed can be adjusted by adjusting the gap between the edge of the covering device 4 and the suction hole 213. The larger the gap between the edge of the covering device 4 and the suction hole 213, the more air enters the suction connector 3 from the food storage container 2. Therefore, the air pressure inside the food storage container 2 is lower after the edge of the covering device 4 is completely attached to the suction hole 213. The smaller the gap between the edge of the covering device 4 and the suction hole 213, the less air enters the suction connector 3 from the food storage container 2. Therefore, the air pressure inside the food storage container 2 is higher after the edge of the covering device 4 is completely attached to the suction hole 213.

[0089] In one embodiment of this application, the negative pressure of the food storage box 2 after the air is evacuated can be adjusted by adjusting the material, size, and weight of the covering device 4.

[0090] In one embodiment of this application, the negative pressure of the food storage container 2 after the air is extracted can be adjusted by the diameter or length of the exhaust duct.

[0091] In one embodiment of this application, the air pressure inside the food storage box 2 can be set to 0.2 MPa to 0.3 MPa when the edge of the covering device 4 is completely in contact with the air extraction hole 213.

[0092] In one embodiment of this application, the covering device 4 may include a positioning member 41 and a blocking member 42. The positioning member 41 is inserted into the air extraction hole 213, and the blocking member 42 is arranged around the outer wall of the positioning member 41 and is disposed outside the food storage box 2 corresponding to the air extraction hole 213, for covering the gap between the positioning member 41 and the air extraction hole 213.

[0093] In this embodiment, by inserting the positioning member 41 of the covering device 4 into the air extraction hole 213, when the food storage container 2 is under negative pressure, the covering device 4 can be sucked towards the air extraction hole 213 along the positioning member 41, preventing the covering device 4 from deviating from the air extraction hole 213 when sucked by negative pressure, so that the covering device 4 can cover the air extraction hole 213 well; the blocking member 42 is arranged around the outer wall of the positioning member 41 and is set outside the food storage container 2, so that when the blocking member 42 is sucked by the negative pressure of the food storage container 2, it can move from the outside of the food storage container 2 towards the air extraction hole 213. The greater the negative pressure, the better the blocking member 42 can seal the air extraction hole 213. Even if the air extraction connector 3 stops sucking, the blocking member 42 can still be firmly sucked towards the air extraction hole 213 by the subsequent negative pressure inside the food storage container 2. If the shielding part 42 is placed inside the food storage container 2, when the air suction connector 3 stops sucking air, because the air pressure inside the food storage container 2 is lower than the air pressure outside the food storage container 2, the covering device 4 located at the air suction hole 213 will be pushed into the food storage container 2 by the outside, thereby causing the negative pressure inside the food storage container 2 to be lost, and the air inside the food storage container 2 will be the same as the outside, and the food storage container 2 will not be able to keep food fresh.

[0094] In one embodiment of this application, the area of ​​the surface of the shielding member 42 facing the air extraction hole 213 can be larger than the gap between the positioning member 41 and the air extraction hole 213, so that when the shielding member 42 is sucked towards the air extraction hole 213 by negative pressure, the surface of the shielding member 42 facing the air extraction hole 213 can fit against the outer surface of the food storage box 2, so that when the shielding member 42 is sucked towards the air extraction hole 213, the surface of the shielding member 42 facing the air extraction hole 213 can seal the surface of the air extraction hole 213, resulting in a better sealing effect.

[0095] In one embodiment of this application, the positioning member 41 can be a one-way valve. The one-way valve includes an air inlet and an air outlet. The air outlet is disposed facing the inside of the food storage container 2 and the air outlet is disposed facing the outside of the food storage container 2. The one-way valve can not only prevent air from outside the food storage container 2 from entering the food storage container 2, but the air inlet and air outlet of the one-way valve can also further help the air inside the food storage container 2 to be discharged to the outside of the food storage container 2.

[0096] In other embodiments of this application, the positioning element 41 may be a plug.

[0097] In one embodiment of this application, when the food storage container 2 is opened, the blocking member 42 can be manually or automatically moved away from the air extraction hole 213 outside the food storage container 2 to depressurize the inside of the food storage container 2, and the food storage container 2 can be easily opened after depressurization.

[0098] In one embodiment of this application, the shielding member may be a cover plate that is circumferentially arranged along the outer wall of the positioning member 41.

[0099] In other embodiments of this application, the covering device 4 may be a cover plate.

[0100] In one embodiment of this application, the positioning member 41 may include a limiting part 411, which may be disposed on the outer surface of the positioning member 41 to restrict the positioning member 41 from disengaging from the air extraction hole 213.

[0101] In one embodiment of this application, the end of the positioning member 41 facing the inside of the food storage container 2 can extend into the food storage container 2 through the air extraction hole 213. The blocking member 42 cooperates with the opening of the air extraction hole 213 facing the outer surface of the food storage container 2. The limiting part 411 of the positioning member 41 cooperates with the opening of the air extraction hole 213 facing the inner surface of the food storage container 2, so that the covering device 4 cannot disengage from the air extraction hole 213 from the opening of the air extraction hole 213 facing the outer surface of the food storage container 2, nor can it disengage from the air extraction hole 213 from the opening of the air extraction hole 213 facing the inner surface of the food storage container 2, so as to realize the movable connection between the covering device 4 and the food storage container 2.

[0102] In one embodiment of this application, the limiting part 411 can be a limiting protrusion disposed at the end of the positioning member 41 facing the inside of the food storage box 2, extending from the outer surface of the positioning member 41 in a direction away from the positioning member 41, and parallel to the opening of the air extraction hole 213 facing the inside of the food storage box 2. Since the limiting protrusion is parallel to the opening of the air extraction hole 213 facing the inside of the food storage box 2, when the positioning member 41 moves outward from the food storage box 2, the limiting protrusion can fit against the opening of the air extraction hole 213 inside the food storage box 2, so that the limiting protrusion can be engaged with the positioning hole, so that while the positioning member 41 is limited, the positioning member 41 can be fixed by the relative fixation between the limiting protrusion and the food storage box 2.

[0103] In this embodiment, the limiting part 411 can be arranged around the outer surface of the positioning member 41 to better fix the positioning member 41.

[0104] In other embodiments of this application, the limiting part 411 may be a limiting protrusion provided on the positioning member 41 extending toward the hole wall of the air extraction hole 213, and a limiting groove that cooperates with the limiting protrusion may be provided on the hole wall of the air extraction hole 213. The limiting protrusion and the limiting groove cooperate with each other to prevent the limiting part 411 from disengaging from the air extraction hole 213 inside and outside the food preservation box 2.

[0105] In one embodiment of this application, such as Figure 10 As shown, the food storage container 2 is also provided with a ventilation groove 214. The ventilation groove 214 is located between the positioning member 41 and the air extraction hole 213. The air inside the food storage container 2 flows out of the food storage container 2 through the ventilation groove 214, which helps to expel the air inside the food storage container 2.

[0106] In one embodiment of this application, the ventilation groove 214 may be disposed between the limiting portion 411 of the positioning member 41 and the air extraction hole 213.

[0107] In one embodiment of this application, if the limiting part 411 of the positioning member 41 is located inside the food storage box 2, and as the positioning member 41 moves outward from the food storage box 2, the limiting protrusion can fit with the position of the air extraction hole 213 connected to the inner surface of the food storage box 2, the ventilation groove 214 can be disposed between the limiting part 411 of the positioning member 41 and the position of the air extraction hole 213 connected to the inner surface of the food storage box 2. The ventilation groove 214 disposed on the inner surface of the food storage box 2 can facilitate the outflow of air inside the food storage box 2, and at the same time, can help the covering device 4 seal the air extraction hole 213.

[0108] In one embodiment of this application, the inner surface of the food storage container 2 may be provided with a ventilating protrusion 215 facing the inside of the food storage container 2 at the position where the air extraction hole 213 is connected. A ventilating groove 214 is provided on the ventilating protrusion 215, which can further facilitate the air inside the food storage container 2 to flow out through the ventilating groove 214.

[0109] In one embodiment of this application, there may be multiple air vents 214, and the multiple air vents 214 may be evenly distributed on the air vent protrusions 215.

[0110] In other embodiments of this application, the vent groove 214 is disposed between the positioning member 41 and the air extraction hole 213. The vent groove 214 may be disposed on the positioning member 41 and may be disposed on the outer surface of the positioning member 41 facing the air extraction hole.

[0111] In one embodiment of this application, the outer surface of the food storage container 2 facing the covering device 4 may be provided with a blocking protrusion 216. The blocking protrusion 216 may be arranged around the air extraction hole 213. When the blocking member 42 covers the air extraction hole 213, the blocking protrusion 216 fits against the blocking member 42 to further seal the air extraction hole.

[0112] In one embodiment of this application, such as Figure 11 As shown, the shielding member 42 is provided with a shielding groove 421 that is adapted to the shielding protrusion 216. The shielding protrusion 216 is inserted into the shielding groove 421, which can prevent air from entering the food storage box 2 from the edge of the shielding member 42 when the shielding member 42 seals the air extraction hole 213.

[0113] The refrigerator proposed in this application includes a refrigerator body 1, an air extraction connector 3, and an air extraction device. The refrigerator body 1 has a refrigerator compartment 11 and an air duct for supplying air to the refrigerator compartment 11. At least one wall of the refrigerator compartment 11 has an air duct cover 13 that at least partially covers the air duct. The air extraction connector 3 is disposed on the air duct cover 13 and can be detachably connected to a connector on a food storage box 2. The air extraction device is disposed in the refrigerator body 1 and is connected to the air extraction connector 3. It can extract air from the food storage box 2 through the air extraction connector 3 to reduce the air pressure inside the food storage box 2, which can reduce the rate of spoilage of the items in the refrigerator to a certain extent. The air extraction device is disposed in the refrigerator body 1, and the air extraction connector 3 is disposed in the refrigerator compartment 11. The air extraction device is connected to the air extraction connector 2 disposed on the air duct cover 13. Compared with placing the air extraction connector 2 in other positions in the refrigerator compartment 11, it can prevent the air extraction connector 3 from damaging the heat preservation of the refrigerator compartment 11 when connected to the air extraction device.

[0114] Although this application has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since this application can be embodied in many forms without departing from the spirit or substance of the application, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A refrigerator, characterized in that, include: The refrigerator body has a refrigerator compartment and an air duct for supplying air to the refrigerator compartment. At least one wall inside the refrigerator compartment has an air duct cover that at least partially covers the air duct. The air duct cover has an air outlet. An exhaust connector is provided on the air duct cover plate and can be detachably connected to a connector on a food storage container; the exhaust connector is located at the air outlet. An air extraction device is installed inside the refrigerator body. The air extraction device can pass through the air vent and communicate with the air extraction connector, and can extract air from the food storage box through the air extraction connector. The air extraction device includes: An air pump is installed inside the refrigerator body; The air extraction pipe includes a first air extraction end and a second air extraction end, the first air extraction end being connected to the air extraction pump in the refrigerator body, and the second air extraction end being connected to the air extraction connector at the air duct cover. The air extraction connector includes: A connector is provided on the inner wall of the refrigerator compartment, corresponding to the food storage container; The connector tube includes a first connector end and a second connector end, the first connector end being connected to the connector head in the refrigerator compartment, and the second connector end being connected to the second exhaust end at the air vent; the second exhaust end passes through the air vent and is connected to the second connector end; the connector tube is movable relative to the air duct cover through the air vent, so that the connector head can be connected to the food storage container at different locations in the refrigerator compartment.

2. The refrigerator according to claim 1, characterized in that, The refrigerator body has a compressor compartment for accommodating the compressor, and the air pump is located in the compressor compartment. The first air extraction end is connected to the air pump in the compressor compartment.

3. The refrigerator according to claim 1, characterized in that, The exhaust connector is located on the side of the air vent near the refrigerator compartment, and the second exhaust end passes through the air vent and communicates with the exhaust connector.

4. The refrigerator according to claim 3, characterized in that, The exhaust connector is rotatably connected to the air duct cover. The side of the air extraction connector facing away from the food storage container is equipped with a magnetic element. When the side of the air extraction connector facing away from the food storage container is in contact with the inner wall, the air extraction connector is magnetically attracted to the air duct cover.

5. The refrigerator according to claim 1, characterized in that, The air extraction connector includes: The first connecting part is located on the side of the air outlet near the air duct and is connected to the second air extraction end; The second connecting part is located on the side of the air vent near the refrigerator compartment and is connected to the food preservation box.

6. The refrigerator according to claim 5, characterized in that, The first connecting portion and the second connecting portion are rotatably connected; The second connecting part is provided with a magnetic element on the side facing away from the food storage box. When the side facing away from the food storage box of the second connecting part is in contact with the air duct cover, the second connecting part and the air duct cover are magnetically attracted.

7. The refrigerator according to claim 1, characterized in that, The air extraction connector includes: A connector seal is disposed on the surface of the air extraction connector used to connect to the food storage container. When the air extraction connector is connected to the food storage container through the connector of the food storage container, the connector seal covers the gap between the air extraction connector and the connector of the food storage container and is disposed between the air extraction connector and the food storage container.

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