Refrigeration device

Abstract

The utility model discloses a refrigeration device. The refrigeration device comprises a box body and a low-pressure storage device, the low-pressure storage device comprises a shell, a storage container capable of being pulled out of or connected into the shell, a door body and a partition piece. The storage container comprises a first mounting part; the door body comprises a second installation part used for being matched with the first installation part and a first limiting part which is close to the top of the door body, located on the lower side of the top plate of the shell when the door body is closed and used for being matched with the top plate of the shell. Wherein the blocking piece is located between a bottom plate of the storage container and a bottom plate of the shell; according to the low-pressure storage device, through cooperation of the door body, the storage container and the partition piece in the height direction, the deformation amount of the shell in the height direction can be limited, and air leakage caused by excessive deformation of the shell during vacuumizing is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, and in particular to a refrigeration device. BACKGROUND

[0002] In order to better store food, a vacuum storage device is arranged in a refrigerator, and a vacuumizing device is used to perform vacuumizing treatment on the vacuum storage device to remove oxygen in the vacuum storage device, so as to prevent food from deteriorating and ensure the freshness of food.

[0003] When the vacuumizing treatment is performed, the pressure difference between the inside and outside of the vacuum storage device continuously increases, and the force exerted by the pressure difference on the shell of the vacuum storage device causes the shell to deform, which easily leads to the shell being damaged due to deformation and leaking, and thus the vacuum preservation function of the vacuum storage device is reduced or lost. SUMMARY

[0004] The present application provides a refrigeration device, and the low-pressure storage device of the refrigeration device is capable of limiting the deformation amount of the shell in the height direction by cooperation of the door body, the storage container and the blocking piece in the height direction, so as to avoid the shell from being damaged due to excessive deformation when vacuumizing.

[0005] In a first aspect, a refrigeration device is provided, comprising:

[0006] a cabinet defining a storage chamber;

[0007] a low-pressure storage device accommodated in the storage chamber;

[0008] a gas extraction device for extracting gas in the low-pressure storage device, so that a lower gas pressure than the atmospheric pressure outside the cabinet is formed in the low-pressure storage device;

[0009] The low-pressure storage device comprises:

[0010] a shell having a storage opening;

[0011] a storage container capable of being extracted from or pushed into the shell; the storage container comprises:

[0012] a first mounting portion away from the rear wall of the shell when the storage container is in a pushed-in state;

[0013] a door body for closing or opening the storage opening; the door body comprises:

[0014] a second mounting portion for cooperating with the first mounting portion to connect the door body and the storage container;

[0015] A first limiting part is arranged near the top of the door body; when the door body closes the storage opening, the first limiting part is arranged on the lower side of the top plate of the shell and is used to cooperate with the top plate of the shell;

[0016] A partition is arranged between the bottom plate of the storage container and the bottom plate of the shell and is used to cooperate with the bottom plate of the storage container and the bottom plate of the shell.

[0017] In the above technical solution, when the vacuumizing device performs air extraction, the shell is deformed due to the pressure difference between the inside and the outside, and the cooperation of the door body, the storage container and the partition in the height direction can limit the deformation amount of the shell in the height direction.

[0018] In some embodiments, the first mounting part comprises a first supporting part; the first supporting part comprises:

[0019] A supporting groove bottom is arranged in the height direction of the low-pressure storage device;

[0020] A first supporting groove wall is connected to the top end of the supporting groove bottom and is arranged on the side of the supporting groove bottom near the door body;

[0021] A second supporting groove wall is connected to the bottom end of the supporting groove bottom and is arranged on the side of the supporting groove bottom near the door body;

[0022] The second mounting part comprises a second supporting part; the second supporting part comprises:

[0023] A first supporting plate;

[0024] A second supporting plate is arranged at a distance from the first supporting plate in the height direction of the low-pressure storage device; the first supporting plate is arranged above the second supporting plate;

[0025] The first supporting groove wall cooperates with the first supporting plate, and the first supporting groove wall is arranged below the first supporting plate; the second supporting groove wall cooperates with the second supporting plate, and the second supporting groove wall is arranged above the second supporting plate.

[0026] In the above technical solution, the above arrangement makes the storage container and the door body interact and support each other in the height direction when they are connected. When the vacuumizing device performs air extraction, the shell is deformed due to the pressure difference between the inside and the outside, and the cooperation of the door body and the storage container in the height direction can limit the deformation amount of the shell in the height direction, thereby avoiding damage caused by excessive deformation of the shell during vacuumizing.

[0027] In some embodiments, the first mounting part comprises a first assembly part; the first assembly part comprises:

[0028] A second matching plate is arranged along the height direction of the low-pressure storage device.

[0029] A first matching plate is connected to the top end of the second matching plate and is arranged on the side of the second matching plate close to the door body.

[0030] A third matching plate is connected to the bottom end of the second matching plate and is arranged on the side of the second matching plate close to the door body.

[0031] The second mounting portion includes a second assembly portion, and the second assembly portion includes:

[0032] A second assembly plate is arranged along the height direction of the low-pressure storage device.

[0033] A first assembly plate is connected to the top end of the second assembly plate and is arranged on the side of the second assembly plate close to the storage container.

[0034] A third assembly plate is connected to the bottom end of the second assembly plate and is arranged on the side of the second assembly plate away from the storage container.

[0035] In the height direction of the low-pressure storage device, the third assembly plate is arranged above the second support plate, and the third assembly plate and the second support plate jointly define an assembly channel extending in the width direction.

[0036] The first matching plate cooperates with the first assembly plate, and the first matching plate is arranged on the lower side of the first assembly plate.

[0037] The third matching plate cooperates with the third assembly plate, and the third matching plate is arranged on the lower side of the third assembly plate.

[0038] The third matching plate is arranged in the assembly channel defined by the third assembly plate and the second support plate.

[0039] In the above technical solution, the above arrangement allows the storage container and the door body to interact and support each other in the height direction when they are connected. The vacuumizing device performs air extraction, and due to the pressure difference between the inside and the outside, the shell deforms. Through the cooperation of the door body and the storage container in the height direction, the deformation amount of the shell in the height direction can be limited, and the shell can be prevented from being damaged due to excessive deformation during vacuumizing.

[0040] In some embodiments, the door body includes a second limiting portion extending along the height direction of the low-pressure storage device.

[0041] In the technical solution, the second limiting part can effectively limit the deformation of the door body in the height direction. When the air extraction device is extracting air, the deformation of the shell in the height direction is further limited through the cooperation of the door body and the storage container in the height direction, so as to avoid damage of the shell due to excessive deformation during vacuum extraction.

[0042] In some embodiments, the second limiting part is connected to the first limiting part and the first assembly plate.

[0043] In the technical solution, the force transmission performance of the first limiting part and the second assembly part in the height direction is enhanced, the deformation of the shell is effectively limited, and damage of the shell due to excessive deformation during vacuum extraction is avoided.

[0044] In some embodiments, the second assembly plate has a mounting channel between the adjacent first support plate and / or second support plate.

[0045] The second cooperation plate is located on the side of the support groove bottom away from the door body.

[0046] Along the width direction of the low-pressure storage device, the second cooperation plate is provided with a first connecting plate near the end of the support groove bottom; the first connecting plate connects the second cooperation plate, the support groove bottom adjacent to the second cooperation plate, and the first support groove wall.

[0047] The first connecting plate is mounted in the mounting channel.

[0048] In the technical solution, the first connecting plate is limited between the first support plate and the second cooperation plate (fourth assembly plate), so as to limit the relative position of the storage container and the door body in the width direction.

[0049] In some embodiments, the height of the second cooperation plate is greater than the height of the support groove bottom; and the first cooperation plate is located above the first support groove wall.

[0050] Along the front-rear direction of the low-pressure storage device, the second cooperation plate is located on the rear side of the support groove bottom.

[0051] In the technical solution, the first support part and the first assembly part are misaligned in the height direction and cooperate with the door body 4, and the first support part and the first assembly part are misaligned in the front-rear direction and cooperate with the door body, so as to enhance the connection stability of the door body and the storage container.

[0052] In some embodiments, the storage container comprises a storage end plate arranged opposite to the first mounting part, and a storage bottom plate connected to the bottom end of the storage end plate.

[0053] The upper surface of the third matching plate, the upper surface of the second support groove wall and the upper surface of the storage bottom plate are coplanar; the lower surface of the third matching plate, the lower surface of the second support groove wall and the lower surface of the storage bottom plate are coplanar.

[0054] In the above technical solution, the third matching plate, the second support groove wall and the storage bottom plate have integrity and wholeness, and the overall strength of the storage container is effectively ensured.

[0055] In a second aspect, a refrigeration device is provided, comprising:

[0056] A cabinet defines a storage chamber;

[0057] A low-pressure storage device is accommodated in the storage chamber;

[0058] A gas extraction device is used to extract gas in the low-pressure storage device, so that a lower gas pressure than the atmospheric pressure outside the cabinet is formed in the low-pressure storage device;

[0059] The low-pressure storage device comprises:

[0060] A housing has a storage opening;

[0061] A storage container can be pulled out or pushed into the housing; the storage container comprises:

[0062] A first mounting portion is away from the rear wall of the housing when the storage container is in a pushed-in state;

[0063] A door body is used to close or open the storage opening; the door body comprises:

[0064] A transparent portion is fixed with the first mounting portion of the storage container; the maximum height of the first mounting portion in the height direction of the low-pressure storage device is less than the height of the transparent portion; the transparent portion comprises:

[0065] A second limiting portion extends in the height direction of the low-pressure storage device;

[0066] A barrier is located between the bottom plate of the storage container and the bottom plate of the housing, and is used to cooperate with the bottom plate of the storage container and the bottom plate of the housing.

[0067] In the above technical solution, when the vacuum extraction device extracts gas, the housing deforms due to the pressure difference between the inside and outside. Through the cooperation of the door body, the storage container and the barrier in the height direction, the deformation amount of the housing in the height direction can be limited, and the housing is prevented from being damaged due to excessive deformation during vacuum extraction.

[0068] In some embodiments, along the height direction of the low-pressure storage device, the maximum height of the first mounting portion is denoted as H1, and the height of the transparent portion is denoted as H2; wherein, 0≤H1:H2≤0.3.

[0069] In the above technical solution, when 0.3 < H1:H2, the first mounting part obstructs the transparent part too much, reducing the visible area inside the storage container in the observation chamber through the transparent part, which is not conducive to viewing the stored items through the transparent part.

[0070] In this application, 0≤H1:H2≤0.3 effectively ensures the visible area inside the storage container in the transparent observation chamber, making it convenient to observe the stored items through the transparent part. Attached Figure Description

[0071] Figure 1 A schematic diagram of the overall structure of a refrigeration device according to some embodiments is shown;

[0072] Figure 2 A schematic diagram of the overall structure of the low-pressure storage device according to some embodiments is shown when it is in the off state;

[0073] Figure 3 A schematic diagram of the overall structure of the low-pressure storage device according to some embodiments is shown when it is in the open state;

[0074] Figure 4 A schematic diagram of the overall structure of the low-pressure storage device according to some embodiments is shown from another perspective when it is in the open state;

[0075] Figure 5 An exemplary schematic diagram of the exploded structure of a drawer unit according to some embodiments is shown;

[0076] Figure 6 An exploded structural diagram of a drawer unit according to some embodiments is shown as an example from another perspective;

[0077] Figure 7 An exploded structural diagram of a door body and sealing element according to some embodiments is shown as an example;

[0078] Figure 8 Exemplary schematic diagrams of the structure of a sealing element according to some embodiments are shown;

[0079] Figure 9 A partial structural schematic diagram of a first sealing portion and a second sealing portion of a sealing element according to some embodiments is shown as an example;

[0080] Figure 10 A partial structural schematic diagram of the third and fourth sealing portions of a sealing element according to some embodiments is shown as an example;

[0081] Figure 11 An exemplary cross-sectional view of a sealing element according to some embodiments is shown;

[0082] Figure 12 Another cross-sectional view of a sealing element according to some embodiments is shown exemplarily;

[0083] Figure 13 An exemplary schematic diagram illustrating the relative positions of a door, a locking assembly, and a pressure relief assembly according to some embodiments is shown;

[0084] Figure 14 An exemplary schematic diagram of the relative positions of a door, locking assembly, and pressure relief assembly according to some embodiments is shown from another perspective;

[0085] Figure 15 An exploded view of a door body, locking assembly, and pressure relief assembly according to some embodiments is shown as an example;

[0086] Figure 16 An exemplary schematic diagram of the structure of a pressure relief fixing part according to some embodiments is shown;

[0087] Figure 17 An exemplary schematic diagram of the pressure relief fixing part from another perspective is shown;

[0088] Figure 18 An exemplary schematic diagram of the transmission connection portion according to some embodiments is shown;

[0089] Figure 19 An exemplary schematic diagram of the assembly structure of the pressure relief fixing part and the transmission connection part according to some embodiments is shown;

[0090] Figure 20 An exemplary view is shown of a projection view of the second locking portion and the transmission connection portion in a plane perpendicular to the rotation axis of the pressure relief fixing portion, according to some embodiments;

[0091] Figure 21 Exemplary cross-sectional views of a door body, locking assembly, and pressure relief assembly according to some embodiments are shown;

[0092] Figure 22 An exemplary schematic diagram of a low-pressure storage device according to some embodiments is shown;

[0093] Figure 23 An example is shown Figure 22 A schematic diagram of the low-pressure storage device from another perspective;

[0094] Figure 24 An exemplary schematic diagram of a storage container according to some embodiments is shown;

[0095] Figure 25An exemplary schematic diagram of the structure of a storage container according to some embodiments is shown from another perspective;

[0096] Figure 26 An exemplary cross-sectional view of a storage container according to some embodiments is shown;

[0097] Figure 27 Another cross-sectional view of a storage container according to some embodiments is shown exemplarily;

[0098] Figure 28 A partial cross-sectional view of a drawer unit according to some embodiments is shown as an example;

[0099] Figure 29 Another partial cross-sectional view of a drawer unit according to some embodiments is shown exemplarily;

[0100] Figure 30 Another partial cross-sectional view of a drawer unit according to some embodiments is shown exemplarily;

[0101] Figure 31 A cross-sectional view of a low-pressure storage device according to some embodiments is shown as an example.

[0102] The refrigerator comprises: a refrigerator 100; a cabinet 101; a cabinet door 102; a low-pressure storage device 1; a vent 10; a pressure relief hole 11; a shell 2; a storage compartment 20; a storage opening 21; a storage container 3; a storage base 30; a first storage side panel 31; a second storage side panel 32; a storage end panel 33; a first mounting part 34; a first support part 341; a support groove bottom 3410; a first support groove wall 3411; a second support groove wall 3412; a first connector 3413; a first assembly part 342; a first mating plate 3421; a second mating plate 3422; a third mating plate 3423; a first connecting plate 3424; a second connector 3425; a door 4; a transparent part 40; a blocking part 41; and a first blocking part 4. 2; Locking connector 43; Second shield 44; Receiving part 45; Second mounting part 46; Second support part 461; First support plate 4611; Second support plate 4612; Second assembly part 462; First assembly plate 4621; Second assembly plate 4622; Third assembly plate 4623; Fourth assembly plate 4624; First limiting part 47; Second limiting part 48; Spacing channel 49; First fixing part 491; Second fixing part 492; Third fixing part 493; Locking assembly 5; First locking part 51; Locking mating part 510; Locking wall 511; Guide wall 512; Second locking part 52; Locking plate 520; First locking strip 5201; Second locking strip 5202; Three locking strips 5203; fourth locking strip 5204; locking block 521; handle 53; pressure relief assembly 6; pressure relief component 60; elastic component 61; torsion spring body 610; first torsion arm 611; second torsion arm 612; first support arm 6121; second support arm 6122; pressure relief fixing part 62; rotating column 620; first pressure relief plate 621; second pressure relief plate 622; reinforcing part 623; transmission connection part 63; first transmission part 631; transmission plate 6310; first transmission strip 63101; second transmission strip 63102; third transmission strip 63103; fourth transmission strip 63104; second transmission part 632; sealing element 7; centroid O; first sealing part 71; first Protrusion 710; First protrusion A1; First mating part 711; First fitting part 712; First positive support part 713; First negative support part 714; Receiving part 715; First connecting part 716; Second sealing part 72; Second midpoint I2; Second mating part 721; Second fitting part 722; Second positive support part 723; Second negative support part 724; Water guiding part 725; Second connecting part 726; Third sealing part 73; Third protrusion 730; Third protrusion A3; Third mating part 731; Third fitting part 732; Third positive support part 733; Third negative support part 734; Water collecting part 735; Third connecting part 736; Fourth sealing part 74; Fourth midpoint I4; Partition 8. Detailed Implementation

[0103] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0104] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0105] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0106] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0107] The refrigeration device provided in this application can have various implementation forms, such as a refrigerator, wine cabinet, or other device with refrigeration function. This application will describe the refrigeration device as a refrigerator.

[0108] Please refer to Figures 1-31 The refrigerator 100 includes a cabinet 101 having a storage compartment, a door 102 connected to the cabinet 101 for opening and closing the storage compartment, and a refrigeration device for supplying cold air to the storage compartment. The cabinet 101 includes an inner liner defining the storage compartment, an outer shell connected to the outside of the inner liner to form the appearance of the refrigerator 100, and a heat insulation layer disposed between the inner liner and the outer shell to insulate the storage compartment.

[0109] Refrigerator 100 includes multiple storage compartments for storing items. In some embodiments of this application, the multiple storage compartments include a refrigerator compartment and a freezer compartment. In some embodiments of this application, the refrigerator compartment is located above or below the freezer compartment, or the refrigerator compartment and the freezer compartment are arranged side by side along the width direction of the refrigerator body 101. It should be noted that the arrangement of the multiple storage compartments of refrigerator 100 is not limited to the examples described above.

[0110] In some embodiments of this application, a retrieval opening is formed at the front end of the storage compartment to allow items to be placed into or retrieved from the storage compartment. A door 102 is connected to the compartment body 101 to open or close the retrieval opening of the storage compartment.

[0111] The refrigerator 100 is equipped with a low-pressure storage device 1 that can be maintained in a low-pressure state, and an air extraction device (not shown in the figure) for extracting gas from the low-pressure storage device 1 to form a low-pressure state in the inner cavity of the low-pressure storage device 1. The above low-pressure state is the gas pressure inside the low-pressure storage device 1 being lower than the atmospheric pressure outside the refrigerator 100.

[0112] In some embodiments of this application, the evacuation device includes a vacuum pump and a pipeline connected between the vacuum pump and the low-pressure storage device 1. When the evacuation device is in operation, the vacuum pump is activated to extract the gas from the low-pressure storage device 1, thereby reducing the pressure inside the low-pressure storage device 1 and creating a low-pressure (vacuum) storage environment.

[0113] The refrigerator 100 is equipped with a controller, which can control the vacuum device to evacuate the low-pressure storage device 1, so as to realize the automatic control of evacuating the low-pressure storage device 1.

[0114] In some embodiments of this application, the low-pressure storage device 1 is housed within a storage chamber. Alternatively, the low-pressure storage device 1 may be located within a cold storage chamber. It should be understood that in other embodiments, the low-pressure storage device 1 may also be located within other storage chambers, such as a variable temperature chamber where the temperature range can switch between a cold storage zone and a freezing zone.

[0115] In some embodiments of this application, the low-pressure storage device 1 is located at the bottom of the cold storage compartment and is supported on the bottom wall of the cold storage compartment.

[0116] In some embodiments of this application, the low-pressure storage device 1 can be constructed independently of the housing 101 and then assembled inside the housing 101. The low-pressure storage device 1 can be inserted into the storage chamber or pulled out from the storage chamber.

[0117] like Figures 2-4 As shown, the low-pressure storage device 1 includes a housing 2 defining a storage chamber 20 and having a storage opening 21, a storage container 3 that can be pushed into or pulled out of the storage chamber 20 defined by the housing 2, and a door 4 located on the side of the storage container 3 away from the rear wall of the housing 2. When the storage container 3 is pushed into the storage chamber 20, the door 4 closes the storage opening 21. The door 4 and the storage container 3 together constitute a drawer unit that can be pushed into and pulled out of the housing 2.

[0118] In some embodiments of this application, the door 4 and the storage container 3 are assembled and connected. The door 4 and the storage container 3 are constructed as separate parts to meet different needs.

[0119] In some embodiments of this application, the housing 2 has a rear wall disposed opposite to the storage port 21. The direction perpendicular to the rear wall of the housing is referred to as the front-rear direction of the low-pressure storage device 1. In some embodiments of this application, the plane containing the storage port 21 is located on the front side of the rear wall of the housing.

[0120] The storage container 3 has an open storage opening and a storage base 30 disposed opposite to the storage opening. The direction perpendicular to the storage base 30 is referred to as the height direction of the low-pressure storage device 1. In some embodiments of this application, the storage base 30 is located below the plane of the storage opening.

[0121] The direction orthogonal to both the front-back and height directions is denoted as the width direction of the low-pressure storage device 1. It should be noted that in the description of directions in this application, the shell 2, the storage container 3, and the door 4 all maintain the same direction as the aforementioned low-pressure storage device.

[0122] The direction along the rear wall of the housing towards the plane where the storage opening 21 is located is denoted as the first moving direction; the direction along the plane where the storage opening 21 is located towards the rear wall of the housing is denoted as the second moving direction. The first moving direction and the second moving direction are opposite, and the drawer unit can move along either the first or the second moving direction.

[0123] When the storage port 21 of the storage chamber 20 is closed by the door 4 and the evacuation device is activated, the gas inside the storage chamber 20 is extracted, and the storage chamber 20 is in a low-pressure state, forming a low-pressure storage environment. According to one embodiment of this application, at the end of the evacuation process, the pressure inside the storage chamber 20 is lower than one standard atmosphere or between one standard atmosphere and absolute vacuum. Because the gas pressure inside the storage chamber 20 is lower than one standard atmosphere, it is commonly referred to by those skilled in the art as a "vacuum chamber".

[0124] In some embodiments of this application, a sealing element 7 may be provided on the door 4. When the door 4 is in the closed position, the door 4 and the housing 2 together press the sealing element 7 to form an airtight joint between the housing 2 and the door 4 when the door 4 is in the closed position. That is, the sealing element 7 is used to seal the connection between the door 4 and the housing 2 when the door 4 is closed, preventing gas from entering the storage chamber from the joint between the housing 2 and the door 4 (the storage chamber is in a normal pressure state when the exhaust device is not evacuating, or in a low pressure state after the exhaust device has evacuated).

[0125] In some embodiments of this application, the sealing element 7 may also be disposed at the front end of the housing 2. For example, it may be connected to the end wall of the housing 2 surrounding its storage opening 21. When the door 4 closes the storage opening 21, the door 4 and the housing 2 are sealed together by the sealing element 7, and the storage chamber 20 of the housing 2 forms a closed storage space.

[0126] In some embodiments of this application, the sealing element 7 is annular. The sealing element 7 is disposed around the storage opening 21 to effectively seal the door 4 and the housing 2.

[0127] In some embodiments of this application, the sealing element 7 is a compressible seal.

[0128] The sealing element 7 has a deformable length along the direction of movement of the storage container 3 when it is pushed into or pulled out of the housing 2 (either the first or second direction of movement). When the door 4 closes the storage opening 21, the sealing element 7 is compressed under the combined squeezing action of the door 4 and the housing 2 to achieve a sealing fit between the door 4 and the housing 2. When the door 4 is opened, the door 4 separates from the housing 2, the pressure applied to the sealing element 7 is removed, and the sealing element 7 returns to its natural state.

[0129] In some embodiments of this application, the sealing element 7 is a rubber seal.

[0130] In some embodiments of this application, such as Figures 5-7 As shown, the sealing element 7 is disposed on the door body 4. It is ring-shaped and surrounds the storage container 3 so that when the door body 4 and the housing 2 are closed, the sealing element 7 surrounds the storage opening 21 to seal it.

[0131] In some embodiments of this application, such as Figures 8-12 As shown, the sealing element 7 includes a first sealing part 71, a second sealing part 72, a third sealing part 73, and a fourth sealing part 74 connected end to end in sequence. The first sealing part 71 and the third sealing part 73 are disposed opposite to each other, and the second sealing part 72 and the fourth sealing part 74 are disposed opposite to each other.

[0132] The first sealing portion 71 and the third sealing portion 73 are distributed along the height direction. The first sealing portion 71 is located above the third sealing portion 73. The first sealing portion 71 extends along the width direction, and the third sealing portion 73 extends along the width direction.

[0133] The second sealing portion 72 and the fourth sealing portion 74 are distributed along the width direction. The second sealing portion 72 extends along the height direction. The fourth sealing portion 74 extends along the height direction.

[0134] In some embodiments of this application, see Figure 8 The centroid O of the annular sealing element 7 is surrounded by the sealing element 7.

[0135] In some embodiments of this application, the sealing element 7 includes a flow guide formed on the first sealing portion 71, the second sealing portion 72, the third sealing portion 73, and the fourth sealing portion 74, so that the sealing portion (first sealing portion 71, second sealing portion 72, third sealing portion 73, or fourth sealing portion 74) thereon can guide the condensate located thereon.

[0136] In some embodiments of this application, the extension trend of the guide portion is consistent with the extension trend of the sealing portion (first sealing portion 71, second sealing portion 72, third sealing portion 73, or fourth sealing portion 74) to which it is located.

[0137] In some embodiments of this application, the first sealing portion 71 ( / the guide portion on the first sealing portion 71) is located above the centroid O. The first sealing portion 71 ( / the guide portion on the first sealing portion 71) protrudes away from the centroid O, and a first protrusion 710 is formed at the middle of the first sealing portion 71 ( / the guide portion on the first sealing portion 71) along the width direction. The arrangement of the first sealing portion 71 ( / the guide portion on the first sealing portion 71) allows water on the first sealing portion 71 ( / the guide portion on the first sealing portion 71) to flow from the first protrusion 710 to both sides along its width, guiding the water on the first sealing portion 71 ( / the guide portion on the first sealing portion 71) to the second sealing portion 72 and the fourth sealing portion 74. Through the second sealing portion 72 and the fourth sealing portion 74 ( / the guide portions on the second sealing portion 72 and the fourth sealing portion 74), water located at the upper end of the sealing element 7 can be guided to the lower end of the sealing element 7.

[0138] In some embodiments of this application, the third sealing portion 73 ( / the guide portion on the third sealing portion 73) is located below the centroid O. The third sealing portion 73 ( / the guide portion on the third sealing portion 73) protrudes away from the centroid O, and a third protrusion 730 is formed at the middle of the third sealing portion 73 ( / the guide portion on the third sealing portion 73) in the width direction. The arrangement of the third sealing portion 73 ( / the guide portion on the third sealing portion 73) allows water flowing downwards from the second sealing portion 72 and / or the fourth sealing portion 74 ( / the guide portions on the second sealing portion 72 and the fourth sealing portion 74) to flow along the third sealing portion 73 ( / the guide portion on the third sealing portion 73); it facilitates the guidance of water to the third protrusion 730 for easy collection or cleaning of water, and prevents condensate from entering the storage container 3 when the door 4 is opened, thus affecting the preservation of food.

[0139] In some embodiments of this application, the second sealing portion 72 ( / the guide portion on the second sealing portion 72) extends linearly along the height direction. The fourth sealing portion 74 ( / the guide portion on the fourth sealing portion 74) extends linearly along the height direction.

[0140] In some embodiments of this application, the midpoint of the second sealing part 72 ( / the guide part on the second sealing part 72) along the height direction is denoted as the second midpoint I2; the midpoint of the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) along the height direction is denoted as the fourth midpoint I4.

[0141] The plane passing through the second midpoint I2 and / or the fourth midpoint I4, and perpendicular to the height direction, is denoted as the first reference plane P1.

[0142] In some embodiments of this application, the line containing the second midpoint I2 and the fourth midpoint I4 is consistent with the width direction.

[0143] In some embodiments of this application, the first sealing portion 71 ( / the guide portion on the first sealing portion 71) includes a first connecting end and a second connecting end distributed along the width direction. The first connecting end of the first sealing portion 71 ( / the guide portion on the first sealing portion 71) is connected to the second sealing portion 72 ( / the guide portion on the second sealing portion 72), and the second connecting end of the first sealing portion 71 ( / the guide portion on the first sealing portion 71) is connected to the fourth sealing portion 74 ( / the guide portion on the fourth sealing portion 74).

[0144] Along the direction from the first connecting end to the second connecting end, the distance between the first sealing part 71 ( / the guide part on the first sealing part 71) and the first reference surface P1 first increases and then decreases.

[0145] The first protrusion 710 is formed at the point where the distance between the first sealing part 71 ( / the guide part on the first sealing part 71) and the first reference surface P1 is the greatest. Water on the first sealing part 71 ( / the guide part on the first sealing part 71) can flow from the first protrusion 710 to the first connecting end and the second connecting end located on opposite sides of the first protrusion 710 under the action of gravity; and flow through the first connecting end to the second sealing part 72 ( / the guide part on the second sealing part 72), and through the second connecting end to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74).

[0146] In some embodiments of this application, the first protrusion 710 is located at the midpoint of the first sealing portion 71 ( / the guide portion on the first sealing portion 71) along the width direction. The above arrangement ensures that the water flow path length from the first protrusion 710 to the second sealing part 72 ( / the guide part on the second sealing part 72) is equal to the water flow path length from the first protrusion 710 to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74), so as to more evenly divert the water on the first sealing part 71 ( / the guide part on the first sealing part 71) to the second sealing part 72 ( / the guide part on the second sealing part 72) and the fourth sealing part 74 ( / the guide part on the fourth sealing part 74), and then guide it downward through the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74); on the other hand, it can avoid the path on one side being too long, causing the water volume to be too large and exceed the guiding volume of the corresponding second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74), so that it cannot be effectively guided.

[0147] In some embodiments of this application, the point at which the first protrusion 710 is at the maximum distance from the first reference surface P1 is denoted as the first protrusion point A1.

[0148] It should be noted that the dimension of the first sealing part 71 ( / the guide part on the first sealing part 71) is greater than 0 in the height direction. Here, the point where the first protrusion 710 is at its maximum distance from the first reference surface P1 is the point on the surface of the first sealing part 71 ( / the guide part on the first sealing part 71) that is furthest from the centroid O of the sealing element 7 and is at its maximum distance from the first reference surface P1.

[0149] Along the width direction, the distance between the first protrusion A1 and the first connecting end is denoted as D. 11 The distance between the first convex point A1 and the second connecting end is denoted as D. 12 In some embodiments of this application, 0.8 ≤ D 11 :D 12 ≤1.2.

[0150] When D 11 :D 12 When the value is less than 0.8, the maximum water flow path length from the first protrusion A1 to the second sealing part 72 ( / the guide part on the second sealing part 72) is too large compared to the maximum water flow path length from the first protrusion A1 to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74). As a result, the amount of water diverted from the first sealing part 71 ( / the guide part on the first sealing part 71) to the second sealing part 72 ( / the guide part on the second sealing part 72) is less than the amount of water diverted to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74). This causes the amount of water diverted to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) to exceed the flow rate that the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) can carry, thus preventing the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) from effectively guiding the water.

[0151] When 1.2 < D 11 :D 12 When the maximum water flow path length from the first protrusion A1 to the second sealing part 72 ( / the guide part on the second sealing part 72) is too large, the water flow path length from the first protrusion A1 to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) is too large. As a result, the amount of water diverted from the first sealing part 71 ( / the guide part on the first sealing part 71) to the second sealing part 72 ( / the guide part on the second sealing part 72) is greater than the amount of water diverted to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74). This causes the amount of water diverted to the second sealing part 72 ( / the guide part on the second sealing part 72) to exceed the flow rate that the second sealing part 72 ( / the guide part on the second sealing part 72) can carry, resulting in the second sealing part 72 ( / the guide part on the second sealing part 72) being unable to effectively guide the water flow.

[0152] When 0.8≤D 11 :D 12At this time, the maximum water flow path length from the first protrusion A1 to the second sealing part 72 ( / the guide part on the second sealing part 72) is similar to the maximum water flow path length from the first protrusion A1 to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74). The amount of water flowing from the first sealing part 71 ( / the guide part on the first sealing part 71) to the second sealing part 72 ( / the guide part on the second sealing part 72) is similar to the amount of water flowing to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74), so that the water is guided downward from the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) in a more balanced manner, ensuring that the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) can effectively guide the water.

[0153] When D 11 :D 12 When the value is ≤1.2, the maximum water flow path length from the first protrusion A1 to the second sealing part 72 ( / the guide part on the second sealing part 72) is similar to the maximum water flow path length from the first protrusion A1 to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74). The amount of water flowing from the first sealing part 71 ( / the guide part on the first sealing part 71) to the second sealing part 72 ( / the guide part on the second sealing part 72) is similar to the amount of water flowing to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74), so that the water is guided downward from the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) in a more balanced manner, ensuring that the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) can effectively guide the water.

[0154] In this application, 0.8 ≤ D 11 :D 12 The setting of ≤1.2 makes the maximum water flow path length from the first protrusion A1 to the second sealing part 72 ( / the guide part on the second sealing part 72) similar to the maximum water flow path length from the first protrusion A1 to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74). The amount of water flowing from the first sealing part 71 ( / the guide part on the first sealing part 71) to the second sealing part 72 ( / the guide part on the second sealing part 72) is similar to the amount of water flowing to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74), so that the water is guided downward from the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) more evenly, ensuring that the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) can effectively guide the water.

[0155] In some embodiments of this application, D 11 =D 12 The above configuration ensures that the maximum water flow path length from the first protrusion A1 to the second sealing part 72 ( / the guide part on the second sealing part 72) is equal to the maximum water flow path length from the first protrusion A1 to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74). This allows for a more balanced flow of water from the first sealing part 71 ( / the guide part on the first sealing part 71) to the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74), and then downwards through the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74). On the other hand, it avoids the situation where the path on one side is too long, causing the water volume to exceed the flow rate of the corresponding second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74), thus preventing effective flow.

[0156] In some embodiments of this application, the third sealing portion 73 ( / the guide portion on the third sealing portion 73) includes a first transition end and a second transition end distributed along the width direction. The first transition end of the third sealing portion 73 ( / the guide portion on the third sealing portion 73) is connected to the second sealing portion 72 ( / the guide portion on the second sealing portion 72), and the second transition end of the third sealing portion 73 ( / the guide portion on the third sealing portion 73) is connected to the fourth sealing portion 74 ( / the guide portion on the fourth sealing portion 74).

[0157] Along the direction from the first adapter end to the second adapter end, the distance between the third sealing part 73 ( / the guide part on the third sealing part 73) and the first reference surface P1 first increases and then decreases.

[0158] The third protrusion 730 is formed at the point where the distance between the third sealing part 73 ( / the guide part on the third sealing part 73) and the first reference surface P1 is the greatest. Water flowing down from the second sealing part 72 ( / the guide part on the second sealing part 72) is diverted through the first adapter end and flows along the third sealing part 73 ( / the guide part on the third sealing part 73), and is then guided to the third protrusion 730. Additionally, water flowing down from the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) is diverted through the second adapter end and flows along the third sealing part 73 ( / the guide part on the third sealing part 73), and is then guided to the third protrusion 730. This facilitates collection or cleaning, preventing condensate from entering the storage container 3 when the door 4 is opened and affecting the preservation of the food.

[0159] The water from the first sealing part 71 ( / guide part on the third sealing part 73), the second sealing part 72 ( / guide part on the second sealing part 72), and the fourth sealing part 74 ( / guide part on the fourth sealing part 74) on the sealing element 7 is concentrated at the third protrusion 730 for easy collection or cleaning, so as to prevent condensate from entering the storage container 3 when the door 4 is opened and affecting the food preservation.

[0160] In some embodiments of this application, the third protrusion 730 is located at the midpoint of the third sealing portion 73 ( / the guide portion on the third sealing portion 73) along its width direction. This arrangement ensures that the water flow path length from the second sealing portion 72 ( / the guide portion on the second sealing portion 72) to the third protrusion 730 is equal to the water flow path length from the fourth sealing portion 74 ( / the guide portion on the fourth sealing portion 74) to the third protrusion 730, thereby more evenly ensuring that water guided downwards by the second sealing portion 72 ( / the guide portion on the second sealing portion 72) or the fourth sealing portion 74 ( / the guide portion on the fourth sealing portion 74) flows along the third sealing portion 73 ( / the guide portion on the third sealing portion 73). Furthermore, it prevents water from leaving the third sealing portion 73 before reaching the third protrusion 730 due to an excessively long path on one side, which would be inconvenient for centralized cleaning.

[0161] In some embodiments of this application, the point at which the third protrusion 730 is at its maximum distance from the first reference surface P1 is denoted as the third protrusion point A3.

[0162] It should be noted that the dimension of the third sealing part 73 ( / the guide part on the third sealing part 73) in the height direction is greater than 0. Here, the point where the third protrusion 730 is at its maximum distance from the first reference surface P1 is the point on the surface of the third sealing part 73 ( / the guide part on the third sealing part 73) away from the centroid O of the sealing element 7 at which the distance from the first reference surface P1 is the largest.

[0163] Along the width direction, the distance between the third protrusion A3 and the first transition end is denoted as D. 31 The distance between the third convex point A3 and the second adapter end is denoted as D. 32 In some embodiments of this application, 0.8 ≤ D 31 :D 32 ≤1.2.

[0164] When D 31 :D 32When the value is less than 0.8, the maximum water flow path length from the third protrusion A3 to the second sealing part 72 ( / the guide part on the second sealing part 72) is too large, which means the water flow downward from the second sealing part 72 ( / the guide part on the second sealing part 72) is less than the water flow downward from the fourth sealing part 74 ( / the guide part on the fourth sealing part 74). This can easily cause some of the water flowing downward from the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) along the third sealing part 73 ( / the guide part on the third sealing part 73) to detach from the third sealing part 73 ( / the guide part on the third sealing part 73), making it inconvenient to clean.

[0165] When 1.2 < D 31 :D 32 When the maximum water flow path length from the third protrusion A3 to the second sealing part 72 ( / the guide part on the second sealing part 72) is too large, the maximum water flow path length from the third protrusion A3 to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) is too large. The amount of water flowing downward from the second sealing part 72 ( / the guide part on the second sealing part 72) is greater than the amount of water flowing downward from the fourth sealing part 74 ( / the guide part on the fourth sealing part 74). This can easily cause some of the water flowing downward from the second sealing part 72 ( / the guide part on the second sealing part 72) along the third sealing part 73 ( / the guide part on the third sealing part 73) to detach from the third sealing part 73 ( / the guide part on the third sealing part 73), making it inconvenient to clean.

[0166] When 0.8≤D 31 :D 32 At the same time, the maximum water flow path length from the third protrusion A3 to the second sealing part 72 ( / the guide part on the second sealing part 72) is similar to the maximum water flow path length from the third protrusion A3 to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74), so that the water guided downward by the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) flows along the third sealing part 73 ( / the guide part on the third sealing part 73) in a more balanced way; on the other hand, it can avoid the water from leaving the third sealing part 73 ( / the guide part on the third sealing part 73) before being guided to the third protrusion 730 due to the excessively long path on one side, which would be inconvenient for centralized cleaning.

[0167] When D 31 :D 32When the value is ≤1.2, the maximum water flow path length from the third protrusion A3 to the second sealing part 72 ( / the guide part on the second sealing part 72) is similar to the maximum water flow path length from the third protrusion A3 to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74), so that the water guided downward by the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) flows along the third sealing part 73 ( / the guide part on the third sealing part 73) in a more balanced manner; on the other hand, it can prevent the path on one side from being too long, so that the water does not flow to the third protrusion 730 and leaves the third sealing part 73 ( / the guide part on the third sealing part 73), which is inconvenient for centralized cleaning.

[0168] In this application, 0.8 ≤ D 31 :D 32 The setting of ≤1.2 makes the maximum water flow path length from the third protrusion A3 to the second sealing part 72 ( / the guide part on the second sealing part 72) similar to the maximum water flow path length from the third protrusion A3 to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74), so that the water guided downward by the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) flows along the third sealing part 73 ( / the guide part on the third sealing part 73) in a more balanced way; on the other hand, it can prevent the path on one side from being too long, so that the water leaves the third sealing part 73 ( / the guide part on the third sealing part 73) before being guided to the third protrusion 730, which is inconvenient for centralized cleaning.

[0169] In some embodiments of this application, D 31 =D 32 The above arrangement ensures that the maximum water flow path length from the third protrusion A3 to the second sealing part 72 ( / the guide part on the second sealing part 72) is equal to the maximum water flow path length from the third protrusion A3 to the fourth sealing part 74 ( / the guide part on the fourth sealing part 74), so that the water guided downward by the second sealing part 72 ( / the guide part on the second sealing part 72) or the fourth sealing part 74 ( / the guide part on the fourth sealing part 74) flows along the third sealing part 73 ( / the guide part on the third sealing part 73) in a more balanced manner; on the other hand, it can prevent the path on one side from being too long, causing the water to leave the third sealing part 73 ( / the guide part on the third sealing part 73) before being guided to the third protrusion 730, which would be inconvenient for centralized cleaning.

[0170] In some embodiments of this application, such as Figure 9 The guide portion on the first sealing portion 71 is a water-receiving portion 715. That is, a receiving portion 715 (the guide portion on the first sealing portion 71) is formed on the first sealing portion 71. The opening of the receiving portion 715 faces the side away from the centroid O of the sealing element 7, so as to be able to collect at least the condensate located above the sealing element 7.

[0171] In some embodiments of this application, the receiving portion 715 is configured as a receiving groove. The opening of the receiving groove faces upward.

[0172] In some embodiments of this application, the first sealing part 71 includes a first mating part 711.

[0173] In some embodiments of this application, the first sealing portion 71 includes a first fitting portion 712. The first fitting portion 712 and the first mating portion 711 are spaced apart.

[0174] In some embodiments of this application, the first mating part 711 mates with the door body 4, and the first fitting part 712 is located on the side of the first mating part 711 away from the door body 4. When the sealing element 7 is provided on the door body 4, the first fitting part 712 is used to mate with the housing 2 when the door body 4 is closed, to seal the door body 4 and the housing 2.

[0175] In some embodiments of this application, the first fitting portion 712 and the first mating portion 711 are the two opposite groove walls of the receiving groove.

[0176] In some embodiments of this application, a plurality of first positive support portions 713 are provided on the side wall of the first mating portion 711 near the first fitting portion 712. The plurality of first positive support portions 713 are arranged at intervals along the width direction of the first mating portion 711. As one possible configuration, the first positive support portion 713 is a protrusion formed on the first mating portion 711.

[0177] In some embodiments of this application, a first counter-support portion 714 extending along the width direction of the first fitting portion 712 is provided on the side wall near the first mating portion 711. Alternatively, the first counter-support portion 714 may be a protrusion formed on the first fitting portion 712.

[0178] When the door 4 is closed, the door 4 and the housing 2 press against the sealing element 7, and the first positive support part 713 and the first negative support part 714 abut against each other. The cooperation of the first positive support part 713 and the first negative support part 714 makes the first fitting part 712 and the first mating part 711 mutually supportive, ensuring effective sealing. In addition, the mutual support of the first positive support part 713 and the first negative support part 714 separates the adjacent side walls of the first fitting part 712 and the first mating part 711, allowing condensate to smoothly enter the receiving part 715 (receiving groove) through the gap between two adjacent first positive support parts 713, ensuring that the receiving part 715 (receiving groove) effectively collects water; and preventing the sealing element 7 from being subjected to excessive pressure, which would cause the first fitting part 712 and the first mating part 711 to be completely pressed together, preventing the receiving part 715 from catching the condensate on the upper part of the sealing element 7.

[0179] In addition, the first positive support portion 713 arranged at intervals cooperates with the first negative support portion 714, so that the first negative support portion 714 interacts with each of the first positive support portions 713 at intervals, which can effectively prevent the two from sticking together.

[0180] In some embodiments of this application, the receiving portion 715 includes a water-receiving bottom wall disposed opposite to its opening.

[0181] In some embodiments of this application, along the direction from the plane containing the opening of the receiving portion 715 towards the water-receiving bottom wall, the cross-sectional area of ​​the first positive support portion 713 gradually decreases in the direction perpendicular to its height (along the direction from the plane containing the opening of the receiving portion 715 towards the water-receiving bottom wall). This arrangement ensures that the receiving portion 715 (receiving groove) has a sufficiently large space away from its opening end to collect condensate. Furthermore, this arrangement allows for a smoother transition between the first positive support portion 713 and the first mating portion 711, resulting in a stronger connection.

[0182] In some embodiments of this application, the distance between two adjacent first support portions 713 gradually increases along the direction from the plane containing the opening of the receiving portion 715 towards the water-receiving bottom wall. This arrangement allows water entering the receiving portion 715 (receiving groove) to flow quickly to the water-receiving bottom wall of the receiving portion 715. Furthermore, this arrangement ensures that the receiving portion 715 (receiving groove) has a sufficiently large space away from its opening end to collect condensate.

[0183] In some embodiments of this application, the maximum distance between the plane containing the opening of the receiving portion 715 and the water-receiving bottom wall along the height direction is denoted as L. 11 The first positive support portion 713 extends along the direction from the plane where the opening of the receiving portion 715 is located to the water-receiving bottom wall (the depth direction of the receiving portion 715), and its length in this direction is denoted as L. 12 Where 0.4≤L 12 :L 11 ≤0.8.

[0184] When L 12 :L 11 When the length is less than 0.4, along the depth direction of the receiving portion 715 (from the plane where the opening of the receiving portion 715 is located to the water-receiving bottom wall), the length of the first positive support portion 713 is too small. The length of the first positive support portion 713 for interaction with the first negative support portion 714 is too small, which easily leads to the misalignment of the first positive support portion 713 and the first negative support portion 714, causing the adjacent sidewalls of the first mating portion 711 and the first fitting portion 712 to adhere, or causing the first negative support portion 714 to adhere to the first mating portion 711, thus failing to effectively collect water. On the other hand, the adhesion of the adjacent sidewalls of the first mating portion 711 and the first fitting portion 712 easily leads to their adhesion.

[0185] When 0.8 < L12 :L 11 At that time, along the depth direction of the receiving part 715 (along the direction from the plane where the opening of the receiving part 715 is located to the bottom wall of the water-receiving part), the length of the first positive support part 713 is too large, the first positive support part 713 occupies a large amount of internal space of the receiving part 715, and the maximum water collection volume of the receiving part 715 is reduced; when the water volume is too large, the excess condensate will not be effectively collected by the receiving part 715 and then guided downward by the second sealing part 72 or the fourth sealing part 74.

[0186] When 0.4≤L 12 :L 11 At the same time, it can ensure that the first positive support part 713 and the first negative support part 714 have sufficient interaction area, and avoid the first positive support part 713 and the first negative support part 714 from being misaligned with each other, which would cause the adjacent side wall of the first mating part 711 to be attached to the first fitting part 712, or cause the first negative support part 714 to be attached to the first mating part 711, so that the condensate above it cannot enter the receiving part 715, or cause the first mating part 711 and the first fitting part 712 to stick together, which is not conducive to water collection.

[0187] When L 12 :L 11 When the value is ≤0.8, it can ensure that the receiving part 715 has sufficient water collection space to effectively collect condensate.

[0188] In this application, 0.4 ≤ L 12 :L 11 The setting of ≤0.8 ensures, on the one hand, that the first positive support 713 and the first negative support 714 have sufficient interaction area, preventing misalignment between the first positive support 713 and the second negative support 724, which could lead to the adjacent sidewalls of the first mating part 711 and the first fitting part 712 becoming stuck together, or the first negative support 714 becoming stuck together with the first mating part 711, thus preventing water collection or causing them to stick together. On the other hand, it ensures that the receiving part 715 has sufficient water collection space to effectively collect condensate.

[0189] In some embodiments of this application, the first sealing portion 71 includes a first connecting portion 716, which is located on the side of the first mating portion 711 away from the first fitting portion 712.

[0190] The door body 4 is provided with a first fixing part 491. The first connecting part 716 cooperates with the first fixing part 491 to connect the first sealing part 71 to the door body 4.

[0191] In some embodiments of this application, the first connecting portion 716 is configured as a protruding strip, and the first fixing portion 491 is configured as a groove.

[0192] In some embodiments of this application, the guide portion on the second sealing portion 72 (and / or the fourth sealing portion 74) is a water guide portion 725. That is, a water guide portion 725 (a guide portion on the second sealing portion 72 (and / or the fourth sealing portion 74)) is formed on the second sealing portion 72 (and / or the fourth sealing portion 74). The opening of the water guide portion 725 faces the side away from the centroid O of the sealing element 7. The water guide portion 725 communicates with the receiving portion 715 to guide the condensate in the receiving portion 715 toward the side closer to the third sealing portion 73.

[0193] In some embodiments of this application, the water guiding portion 725 is configured as a water guiding groove. The opening of the water guiding groove faces the side away from the centroid O of the sealing element 7.

[0194] In some embodiments of this application, the second sealing portion 72 includes a second mating portion 721.

[0195] In some embodiments of this application, the second sealing portion 72 includes a second fitting portion 722. The second fitting portion 722 and the second mating portion 721 are spaced apart.

[0196] In some embodiments of this application, the second fitting portion 722 is located on the side of the second mating portion 721 away from the door body 4, and the second mating portion 721 mates with the door body 4. When the sealing element 7 is provided on the door body 4, the second fitting portion 722 is used to mate with the housing 2 when the door body 4 is closed, to seal the door body 4 and the housing 2.

[0197] In some embodiments of this application, the second fitting part 722 and the second mating part 721 are the two opposite walls of the water guide channel.

[0198] In some embodiments of this application, a plurality of second positive support portions 723 are provided on the side wall of the second mating portion 721 near the second fitting portion 722. As one possible configuration, the second positive support portion 723 is a protrusion formed on the second mating portion 721.

[0199] In some embodiments of this application, a second anti-support portion 724 extending along the width direction of the second fitting portion 722 is provided on the side wall of the second fitting portion 722 near the second mating portion 721. Alternatively, the second anti-support portion 724 may be a protrusion formed on the second fitting portion 722.

[0200] When the door 4 is closed, the door 4 and the housing 2 press against the sealing element 7, and the second positive support part 723 and the second negative support part 724 abut against each other. The cooperation of the second positive support part 723 and the second negative support part 724 makes the second fitting part 722 and the second mating part 721 mutually supportive, thus ensuring effective sealing.

[0201] In some embodiments of this application, the water guiding portion 725 includes a water guiding bottom wall disposed opposite to the plane of its opening. Wherein, after the second positive support portion 723 and the second negative support portion 724 support each other, the adjacent side walls of the second fitting portion 722 and the second mating portion 721 are separated. The second positive support portion 723, the second negative support portion 724, the second fitting portion 722, the second mating portion 721, and the water guiding bottom wall together define a water guiding channel. The condensate guided by the receiving portion 715 of the first sealing portion 71 flows through the water guiding channel toward the side closer to the third sealing portion 73.

[0202] In some embodiments of this application, a plurality of second positive support portions 723 are arranged at intervals along the height direction of the second mating portion 721. The second positive support portions 723 cooperate with the second negative support portions 724, causing the second fitting portion 722 to separate from the adjacent side walls of the second mating portion 721; the plurality of spaced second positive support portions 723 cooperate with the second negative support portions 724, so that the second negative support portions 724 interact with the second positive support portions 723 at intervals, which can effectively prevent the two from sticking together.

[0203] In some embodiments of this application, along the direction from the plane containing the opening of the water guide 725 to its bottom wall, the cross-sectional area of ​​the second positive support 723, perpendicular to its width, gradually decreases. This arrangement ensures that the water guide 725 (water guide channel) has a sufficiently large space away from its opening end to collect condensate. Furthermore, this arrangement allows for a smoother transition between the second positive support 723 and the second mating part 721, resulting in a stronger connection.

[0204] In some embodiments of this application, the distance between two adjacent second positive support portions 723 gradually increases along the direction from the plane containing the opening of the water guide portion 725 to its bottom wall. This arrangement ensures that the water guide portion 725 (water guide channel) has a sufficiently large space away from its opening to receive condensate; furthermore, it reduces the amount of condensate entering the water guide channel that flows out along the width direction through the distance between adjacent second positive support portions 723 during downward flow, thus improving the downward guiding efficiency of the water guide portion 725.

[0205] Along the width direction, the maximum distance between the plane containing the opening of the water guide section 725 and the bottom wall of the water guide section is denoted as L. 21 The second positive support portion 723 extends along the direction from the plane containing the opening of the water guide portion 725 to the bottom wall of the water guide portion (the depth direction of the water guide portion 725), and its length in this direction is denoted as L. 22 Where 0.4≤L 22 :L 21 ≤0.8.

[0206] When L 22 :L 21When the length is less than 0.4, along the depth direction of the water guide portion 725 (along the direction from the plane where the opening of the water guide portion 725 is located to the bottom wall of the water guide portion), the length of the second positive support portion 723 is too small. The length of the second positive support portion 723 for interacting with the second negative support portion 724 is too small, which easily leads to the misalignment of the second positive support portion 723 and the second negative support portion 724, causing the adjacent sidewalls of the second mating portion 721 and the second fitting portion 722 to at least partially fit together, or causing the second negative support portion 724 to fit together with the second mating portion 721, resulting in the second mating portion 721 and the second fitting portion 722 sticking together.

[0207] When 0.8 < L 22 :L 21 When the water flow is too large, along the depth direction of the water guide section 725 (along the direction from the plane where the opening of the water guide section 725 is located to the bottom wall of the water guide section), the length of the second positive support section 723 is too large, and the second positive support section 723 occupies a large amount of internal space of the water guide section 725, thus reducing the maximum water collection volume of the water guide section 725. When there is too much water, the excess condensate cannot be guided downward by the water guide section 725 to the third sealing section 73. This causes the condensate to drip down below both ends of the sealing element 7 along its width, resulting in a large area of ​​water accumulation on the bottom wall of the storage chamber where the low-pressure storage device 1 is placed, which is inconvenient to clean.

[0208] When 0.4≤L 22 :L 21 At the same time, it can ensure that the second positive support portion 723 and the second negative support portion 724 have sufficient interaction area, and avoid the second positive support portion 723 and the second negative support portion 724 from being misaligned with each other, causing the adjacent sidewalls of the second mating portion 721 and the second fitting portion 722 to be attached, or causing the second negative support portion 724 and the second mating portion 721 to be attached and stick together.

[0209] When L 22 :L 21 When the value is ≤0.8, it can ensure that the water guide section 725 has sufficient water collection space to effectively collect condensate.

[0210] In this application, 0.4 ≤ L 22 :L 21 The setting of ≤0.8 ensures, on the one hand, that the second positive support 723 and the second negative support 724 have sufficient interaction area, preventing misalignment between the second positive support 723 and the second negative support 724 from causing the adjacent sidewalls of the second mating part 721 and the second fitting part 722 to adhere, or causing the second negative support 724 and the second mating part 721 to adhere and stick together. On the other hand, it ensures that the water guiding part 725 has sufficient water collection space to effectively collect and guide condensate.

[0211] In some embodiments of this application, the second sealing portion 72 includes a second connecting portion 726, which is located on the side of the second mating portion 721 away from the second fitting portion 722.

[0212] The door body 4 is provided with a second fixing part 492. The second connecting part 726 cooperates with the second fixing part 492 to connect the second sealing part 72 to the door body 4.

[0213] In some embodiments of this application, the second connecting portion 726 is configured as a protruding strip. The second fixing portion 492 is configured as a groove.

[0214] It should be noted that in some embodiments of this application, the structure of the fourth sealing part 74 is the same as that of the second sealing part 72, and will not be described again here. In some embodiments of this application, the fourth sealing part 74 includes components with the same structure as the third sealing part 73, such as the second mating part 721, the second fitting part 722, the second connecting part 726, the water guiding part 725, the second positive support part 723, and the second negative support part 724.

[0215] In some embodiments of this application, L 11 =L 21 The above settings facilitate the processing and design of the sealing element 7.

[0216] In some embodiments of this application, L 12 =L 22 The above settings facilitate the processing and design of the sealing element 7.

[0217] In some embodiments of this application, the guide portion on the third sealing portion 73 is a water collecting portion 735. That is, a water collecting portion 735 (the guide portion on the third sealing portion 73) is formed on the third sealing portion 73. The opening of the water collecting portion 735 faces the side away from the first sealing portion 71 (away from the centroid O), so as to collect at least the condensate flowing downward by the second sealing portion 72 and / or the fourth sealing portion 74 within the water collecting portion 735.

[0218] In some embodiments of this application, the water collection part 735 is configured as a water collection tank. The opening of the water collection tank faces downward.

[0219] In some embodiments of this application, the third sealing part 73 includes a third mating part 731.

[0220] In some embodiments of this application, the third sealing portion 73 includes a third fitting portion 732. The third fitting portion 732 and the third mating portion 731 are spaced apart.

[0221] In some embodiments of this application, the third fitting portion 732 is located on the side of the third mating portion 731 away from the door body 4. The third mating portion 731 mates with the door body 4. Wherein, when the sealing element 7 is provided on the door body 4, the third fitting portion 732 is used to mate with the housing 2 when the door body 4 is closed, so as to seal the door body 4 and the housing 2.

[0222] In some embodiments of this application, the third fitting part 732 and the third mating part 731 are the two opposite walls of the water collection tank.

[0223] In some embodiments of this application, a plurality of third positive support portions 733 are provided on the side wall of the third mating portion 731 near the third fitting portion 732. As one possible configuration, the third positive support portion 733 is a protrusion formed on the third mating portion 731.

[0224] In some embodiments of this application, a third counter-support portion 734 extending along the width direction of the third fitting portion 732 is provided on the side wall of the third fitting portion 732 near the third mating portion 731. Alternatively, the third counter-support portion 734 may be a protrusion formed on the third fitting portion 732.

[0225] In some embodiments of this application, the water collecting part 735 includes a water collecting bottom wall disposed opposite to the plane of its opening. Wherein, after the third positive support part 733 and the first negative support part 714 support each other, the adjacent side walls of the third fitting part 732 and the third mating part 731 are separated; the third positive support part 733, the third negative support part 734, the third fitting part 732, the third mating part 731, and the water collecting bottom wall together define a water collecting channel. Condensate guided downwards by the second sealing part 72 and / or the fourth sealing part 74 enters the water collecting channel.

[0226] In some embodiments of this application, the distance between the third sealing part 73 and the first reference surface P1 first increases and then decreases along the direction from the first transition end to the second transition end; condensate entering the water collection channel through the second sealing part 72 and / or the fourth sealing part 74 flows towards the third protrusion 730. The condensate is collected at the third protrusion 730 by the third sealing part 73 to facilitate the collection or cleaning of condensate, so as to prevent condensate from entering the storage container 3 when the door 4 is opened and affecting the preservation of food.

[0227] In some embodiments of this application, a plurality of third positive support portions 733 are arranged at intervals along the width direction of the third mating portion 731. The third positive support portions 733 cooperate with the third negative support portions 734, causing the third fitting portion 732 to separate from the adjacent side walls of the third mating portion 731. The plurality of spaced third positive support portions 733 cooperate with the third negative support portions 734, so that the third negative support portions 734 interact with the third positive support portions 733 at intervals, which can effectively prevent the two from sticking together.

[0228] In some embodiments of this application, along the direction from the plane containing the opening of the water collection part 735 to its bottom wall, the cross-sectional area of ​​the third positive support part 733, perpendicular to the height direction, gradually decreases. This arrangement ensures that the water collection part 735 (water collection tank) has a sufficiently large space away from its opening end to collect condensate. Furthermore, this arrangement allows for a smoother transition between the third positive support part 733 and the third mating part 731, resulting in a stronger connection.

[0229] In some embodiments of this application, the distance between two adjacent third positive support portions 733 gradually increases along the direction from the plane containing the opening of the water collection portion 735 to its bottom wall. This arrangement ensures that the water collection portion 735 (water collection tank) has a sufficiently large space away from its opening to collect condensate; furthermore, it reduces the amount of condensate entering the water collection channel that flows out along the width direction through the gap between adjacent third positive support portions 733, thus improving the efficiency of the water collection portion 735 in guiding the flow along the width direction.

[0230] Along the vertical direction, the maximum distance between the plane containing the opening of the water collection section 735 and the bottom wall of the water collection section is denoted as L. 31 The third positive support 733 extends along the direction from the plane containing the opening of the water collecting part 735 to the bottom wall of the water collecting part (the depth direction of the water guiding part 725), and its length in this direction is denoted as L. 32 Where 0.4≤L 32 :L 31 ≤0.8.

[0231] When L 32 :L 31 When the length is less than 0.4, along the depth direction of the water collection part 735 (along the direction from the plane where the opening of the water collection part 735 is located to the bottom wall of the water collection part), the length of the third positive support part 733 is too small. The length of the third positive support part 733 for interacting with the third negative support part 734 is too small, which can easily lead to the third positive support part 733 and the third negative support part 734 being misaligned with each other, causing the adjacent side wall portion of the third mating part 731 to be attached to the third fitting part 732, or causing the third negative support part 734 to be attached to the third mating part 731, resulting in the third mating part 731 and the third fitting part 732 sticking together.

[0232] When 0.8 < L 32 :L 31When the water volume is too large, along the depth direction of the water collection section 735 (along the direction from the plane where the opening of the water collection section 735 is located to the bottom wall of the water collection section), the length of the third positive support section 733 is too large, the third positive support section 733 occupies a large amount of internal space of the water collection section 735, and the maximum water collection volume of the water collection section 735 is reduced; when the water volume is too large, the excess condensate will not be able to enter the third sealing section 73 from the second sealing section 72 or the fourth sealing section 74; causing the condensate to drip directly onto the sealing element 7 along its width, resulting in a large area of ​​water accumulation on the bottom wall of the storage chamber where the low-pressure storage device 1 is placed, which is inconvenient to clean.

[0233] When 0.4≤L 32 :L 31 At the same time, it can ensure that the third positive support portion 733 and the third negative support portion 734 have sufficient interaction area, so as to avoid the third positive support portion 733 and the third negative support portion 734 misaligning with each other, causing the adjacent sidewalls of the third mating portion 731 and the third fitting portion 732 to at least partially fit together, or causing the third negative support portion 734 and the third mating portion 731 to fit together and stick together.

[0234] When L 32 :L 31 When the value is ≤0.8, it can ensure that the water guide section 725 has sufficient water collection space to effectively collect condensate.

[0235] In this application, 0.4 ≤ L 32 :L 31 The setting of ≤0.8 ensures, on the one hand, that the third positive support 733 and the third negative support 734 have sufficient interaction area, preventing misalignment between the third positive support 733 and the third negative support 734 from causing the adjacent sidewalls of the third mating part 731 and the third fitting part 732 to adhere, or causing the third negative support 734 and the third mating part 731 to adhere and stick together. On the other hand, it ensures that the water guiding part 725 has sufficient water collection space to effectively collect and guide condensate.

[0236] It should be noted that in some embodiments of this application, the structure of the fourth sealing part 74 is the same as that of the second sealing part 72, and will not be described again here.

[0237] In some embodiments of this application, L 31 =L 21 , or L 31 =L 11 The above settings facilitate the processing and design of the sealing element 7. Wherein, L 31 =L 11 This makes the first sealing part 71 and the third sealing part 73 interchangeable, facilitating installation and use.

[0238] In some embodiments of this application, L 32 =L22 , or L 32 =L 12 The above settings facilitate the processing and design of the sealing element 7. Wherein, L 32 =L 12 This makes the first sealing part 71 and the third sealing part 73 interchangeable, facilitating installation and use.

[0239] In some embodiments of this application, the third sealing portion 73 includes a third connecting portion 736, which is located on the side of the third mating portion 731 away from the second fitting portion 722.

[0240] The door body 4 is provided with a third fixing part 493. The third connecting part 736 cooperates with the third fixing part 493 to connect the third sealing part 73 to the door body 4.

[0241] In some embodiments of this application, the third connecting portion 736 is configured as a protruding strip, and the third fixing portion 493 is configured as a groove.

[0242] In some embodiments of this application, the second connecting portion 726 of the first connecting portion 716, the second connecting portion 72 of the second sealing portion 72, the third connecting portion 736, and the second connecting portion 726 of the fourth sealing portion 74 are connected end to end in a ring.

[0243] Correspondingly, on the door body 4, the first fixing part 491, the second fixing part 492 that cooperates with the second connecting part 726 of the second sealing part 72, the third fixing part 493, and the second fixing part 492 that cooperates with the second connecting part 726 of the fourth sealing part 74 are arranged in a ring shape, connected end to end. This arrangement facilitates the processing and design of the sealing element 7, and also facilitates the installation of the sealing element 7.

[0244] In some embodiments of this application, the sealing element 7 is symmetrically arranged about its centroid O, so that the first sealing part 71 and the third sealing part 73 of the sealing element 7 are universal, and the second sealing part 72 and the fourth sealing part 74 are universal, which facilitates installation and use.

[0245] It should be noted that in some embodiments of this application, when the sealing element 7 is fixed to the housing 2, the first connecting portion 716 is located on the side of the first fitting portion 712 away from the first mating portion 711; the second connecting portion 726 is located on the side of the second fitting portion 722 away from the second mating portion 721; and the third connecting portion 736 is located on the side of the third fitting portion 732 away from the third mating portion 731. Correspondingly, the first fixing portion 491, the second fixing portion 492, and the third fixing portion 493 are located on the housing 2.

[0246] In some embodiments of this application, when the sealing element 7 is fixed to the housing 2, the first mating part 711, the second mating part 721, and the third mating part 731 mate with the housing 2, and the first fitting part 712, the second fitting part 722, and the third fitting part 732 are used to mate with the door 4 when the door 4 is closed. Correspondingly, the first fixing part 491, the second fixing part 492, and the third fixing part 493 are provided on the housing 2; the first connecting part provided on the first mating part 711, the second connecting part 726 provided on the second mating part 721, the third connecting part 736 provided on the third mating part 731, and the second connecting part 726 provided on the second mating part 721 of the fourth sealing part 74 are mated and connected with each fixing part (first fixing part 491, second fixing part 492, and third fixing part 493) on the housing 3.

[0247] In some embodiments of this application, the sealing element 7 is attached to the door body 4 or the housing 2 via the first mating part 711, the second mating part 721 and the third mating part 731.

[0248] In some embodiments of this application, the sealing element 7 is adhered to the housing 2 via the first bonding portion 712, the second bonding portion 722 and the third bonding portion 732.

[0249] In some embodiments of this application, such as Figure 2 , Figures 5-7 and Figures 13-15 The door 4 includes a transparent section 40. The transparent section 40 is located at the front end of the storage container 3 so that the stored items placed in the storage container 3 can be seen through the transparent section 40.

[0250] In this application, the transparent part 40 of the door 4 makes the storage container 3 visible through the door 4, allowing the user to see the condition of the food inside without having to open the low-pressure storage device 1. This further improves the convenience of using the low-pressure storage device 1 and reduces the frequency of opening and closing the low-pressure storage device 1, thereby reducing the frequency of the drawer device pulling out the air to evacuate the low-pressure storage device 1, extending the service life of the vacuum drawer, avoiding increased energy consumption, and ensuring the vacuum preservation effect of the food.

[0251] In some embodiments of this application, the storage container 3 includes a storage base plate 30, a first storage side plate 31, a second storage side plate 32, and a storage end plate 33. The first storage side plate 31, the storage end plate 33, and the second storage side plate 32 are sequentially connected and arranged along the storage base plate 30. The first storage side plate 31 and the second storage side plate 32 are arranged opposite to each other, and the storage end plate 33 is located at the end of the storage base plate 30 away from the door 4. The first storage side plate 31 and the second storage side plate 32 extend in a front-back direction.

[0252] In some embodiments of this application, the storage container 3 includes a first mounting portion 34 located at opposite ends of the base plate, which is different from the storage end plate 33. The first mounting portion 34 is used to connect to the door body 4.

[0253] In some embodiments of this application, the maximum height of the first mounting portion 34 is less than the height of the end plate 33 in the direction perpendicular to the bottom plate 30 (along the height direction); in order to reduce the obstruction of the transparent portion 40 by the first mounting portion 34 and increase the area through which the internal space of the storage container 3 is visible.

[0254] In some embodiments of this application, the maximum height of the first mounting portion 34 is less than the height of the storage opening 21 in the direction perpendicular to the bottom plate 30 (along the height direction); in order to reduce the obstruction of the transparent portion 40 by the first mounting portion 34 and increase the area through which the internal space of the storage container 3 is visible.

[0255] The transparent portion 40 of the door 4 mates with the first mounting portion 34 of the storage container 3 to fix the door 4 to the storage container 3. Along the direction perpendicular to the storage base plate 30 (along the height direction), the maximum height of the first mounting portion 34 is less than the height of the transparent portion 40; this reduces the obstruction of the transparent portion 40 by the first mounting portion 34 and increases the area through which the interior space of the storage container 3 is visible. The maximum height of the first mounting portion 34 along the direction perpendicular to the storage base plate 30 (along the height direction) is denoted as H1, and the height of the transparent portion 40 is denoted as H2. Where 0 ≤ H1 : H2 ≤ 0.3.

[0256] When 0.3 < H1:H2, the first mounting part 34 obstructs the transparent part 40 too much, reducing the visible area inside the storage container 3 through the transparent part 40, which is not conducive to viewing the stored items through the transparent part 40.

[0257] In this application, 0≤H1:H2≤0.3 effectively ensures the visible area inside the storage container 3 in the observation chamber of the transparent part 40, making it convenient to observe the stored items through the transparent part 40.

[0258] It should be noted that the maximum height of the first mounting part 34 is the maximum distance between the end of the first mounting part 34 away from the bottom plate 30 and the bottom plate 30.

[0259] In some embodiments of this application, the end face of the first mounting portion 34 away from the base plate 30 is parallel to the base plate 30. In this case, any point on the end face of the first mounting portion 34 away from the base plate 30 is equidistant from the base plate 30, and the distance between any point on the end face of the first mounting portion 34 away from the base plate 30 and the base plate 30 is the maximum height of the first mounting portion 34.

[0260] In some embodiments of this application, such asFigures 2-7 , Figures 13-15 The low-pressure storage device 1 includes a locking assembly 5 for locking or unlocking the door 4 and the housing 2.

[0261] In some embodiments of this application, the locking component 5 includes a first locking part 51. The first locking part 51 is disposed at opposite ends of the housing 2 along the width direction.

[0262] In some embodiments of this application, the locking component 5 includes a second locking part 52. The second locking part 52 is disposed at opposite ends of the door body 4 along the width direction, and is used to cooperate with the first locking part 51 on the corresponding side to lock or unlock the door body 4 and the housing 2.

[0263] In some embodiments of this application, the locking component 5 includes a handle 53 that extends along the width direction of the door body 4. The end of the handle 53 along the width direction is connected to a second locking portion 52 on the corresponding side. When the handle 53 moves, it drives the second locking portions 52 at both ends to move, causing the second locking portions 52 to move relative to the first locking portion 51, thereby locking or unlocking the first locking portion 51 and the second locking portion 52, and thus locking or unlocking the housing 2 and the door body 4.

[0264] In some embodiments of this application, the handle 53 is rotatably connected to the door body 4 via second locking portions 52 at its opposite ends. The rotation axis of the handle 53 extends along the width direction of the door body 4.

[0265] In some embodiments of this application, such as Figure 4 The first locking part 51 includes a locking engagement part 510 disposed on the housing 2. The locking engagement part 510 includes a locking wall 511 perpendicular to the bottom wall of the housing 2 and a guide wall 512 inclined relative to the locking wall 511; the guide wall 512 is located on the side (front side) of the locking wall 511 near the storage opening 21. The guide wall 512 is formed by extending from the end of the locking wall 511 near the bottom wall of the housing 2 towards the side near the storage opening 21 and the top wall of the housing.

[0266] In some embodiments of this application, such as Figures 5-6 The second locking part 52 includes a locking plate 520 and a locking block 521 disposed on the side of the locking plate 520 facing the side wall of the housing 2. When the locking plate 520 is rotated under the drive of the handle 53, the locking block 521 slides along the guide wall 512 to the rear side of the locking wall 511 to lock the door 4 and the housing 2.

[0267] In some embodiments of this application, the locking plate 520 is flat and includes a first locking strip 5201, a second locking strip 5202 and a third locking strip 5203 connected end to end in sequence.

[0268] The locking plate 520 also includes a fourth locking plate 5204 located at the connection between the first locking plate 5201 and the third locking plate 5203. The fourth locking plate 5204 is located on the same side as the first locking plate 5201 and the third locking plate 5203. The fourth locking plate 5204 and the first locking plate 5201 form an acute angle.

[0269] In some embodiments of this application, the middle position of the second locking strip 5202 is rotatably fixed to the end of the door body 45. A locking block 521 is located at the connection between the second locking strip 5202 and the third locking strip 5203. The end of the fourth locking strip 5204 away from the third locking strip 5203 is fixed to the corresponding end of the handle 53. When the handle 53 rotates, the handle 53, through the fourth locking strip 5204, drives the second locking part 52 to rotate around its rotation axis located at the middle position of the second locking strip 5202.

[0270] The second locking part is designed to occupy less space in the low-pressure storage device 1, thereby increasing the width of the door 4 and the storage opening 21 and the storage container 3, thus increasing the volume of the storage container 3 and the storage capacity of the low-pressure storage device 1.

[0271] In some embodiments of this application, such as Figures 13-21 , Figures 28-30 The low-pressure storage device 1 includes a pressure relief component 6, which is used to relieve pressure on the vacuumed low-pressure storage device 1 to facilitate the opening of the door 4.

[0272] In some embodiments of this application, the door 4 is provided with a pressure relief hole 11 that connects the external environment of the low-pressure storage device 1 with its internal space. A pressure relief assembly 6 is provided on the door 4 for opening or closing the pressure relief hole 11. Before the air extraction device evacuates the air to form a low-pressure environment, the pressure relief assembly 6 closes the pressure relief hole 11 to form a sealed space inside the low-pressure storage device 1; the air extraction device then evacuates the gas inside the device to form a low-pressure storage environment.

[0273] When it is necessary to open the door 4, the pressure relief component 6 opens the pressure relief hole 11, and the gas in the external environment of the low-pressure storage device 1 enters the internal space of the low-pressure storage device 1 through the pressure relief hole 11. The pressure difference between the inside and outside of the low-pressure storage device 1 gradually decreases, making it convenient for the user to open the door 4.

[0274] In some embodiments of this application, the pressure relief assembly 6 includes a pressure relief member 60, which is used to open or close the pressure relief port 11.

[0275] In some embodiments of this application, the pressure relief assembly 6 includes a pressure relief fixing part 62. A pressure relief member 60 is mounted on the pressure relief fixing part 62. The pressure relief fixing part 62 is rotatably connected to the door body 4 and can drive the pressure relief member 60 mounted thereon to rotate relative to the door body 4, so as to realize the opening or closing of the pressure relief hole 11 by the pressure relief member 60.

[0276] In some embodiments of this application, the pressure relief fixing part 62 has a rotation axis that is rotatable relative to the door body 4, extending along the width direction of the door body 4.

[0277] In some embodiments of this application, the rotation axis of the pressure relief fixing part 62 is coaxial with the rotation axis of the handle 53 (or the second locking part 52).

[0278] In some embodiments of this application, the pressure relief assembly 6 includes an elastic element 61. The elastic element 61 connects the door body 4 and the pressure relief fixing part 62.

[0279] When the pressure relief component 60 opens the pressure relief hole 11, the elastic component 61 is compressed, and the elastic component 61 accumulates elastic potential energy.

[0280] When the pressure relief member 60 changes from the state of opening the pressure relief hole 11 to the state of closing the pressure relief hole 11, the elastic member 61 releases at least part of the elastic potential energy to drive the pressure relief fixing part 62 to move. The pressure relief fixing part 62 drives the pressure relief member 60 to approach the pressure relief hole 11 and finally closes the pressure relief hole 11.

[0281] In some embodiments of this application, when the pressure relief hole 11 is closed, the elastic member 61 still accumulates elastic potential energy, and the elastic member 61 still has the tendency to drive the pressure relief fixing part 62 to move the pressure relief member 60 towards the side closer to the pressure relief hole 11. This makes it possible for the pressure relief member 60 to press the pressure relief hole 11 tightly when the pressure relief member 60 closes the pressure relief hole 11, ensuring the sealing performance of the pressure relief member 60 when closing the pressure relief hole 11.

[0282] In some embodiments of this application, the elastic element 61 is a torsion spring. The torsion spring includes a torsion spring body 610 coaxial with the rotation axis of the pressure relief fixing part 62, a first torsion arm 611, and a second torsion arm 612; wherein, the first torsion arm 611 is fixedly connected to the door body 4, and the second torsion arm 612 is connected to the pressure relief fixing part 62. The above arrangement, through the arrangement of the first torsion arm 611 and the second torsion arm 612, efficiently and stably transmits elastic force under the interaction between the door body 4 and the pressure relief fixing part 62, and in conjunction with the rotational movement of the pressure relief fixing part 62, enables the pressure relief element 60 to fit tightly with the pressure relief hole 11.

[0283] In some embodiments of this application, along the width direction of the door body 4, the elastic element 61 (torsion spring) is close to the pressure relief element 60; so that the force of the elastic element 61 (torsion spring) is more effectively transmitted to the pressure relief element 60, so that the pressure relief element 60 is pressed tightly against the pressure relief hole 11.

[0284] In some embodiments of this application, the second torsion arm 612 includes a first arm 6121 formed by extending one end of the torsion spring body 610 along its tangential direction. The first arm 6121 cooperates with the pressure relief fixing part 62 to apply the force of the torsion spring to the pressure relief fixing part 62.

[0285] In some embodiments of this application, the second torsion arm 612 includes a first arm 6121 extending from one end of the torsion spring body 610, and a second arm 6122 extending from the end of the first arm 6121 away from the torsion spring body 610 in the direction of the central axis of the torsion spring body 610.

[0286] Along the width direction, the second arm 6122 and the pressure relief component 60 are located on the same side of the first arm 6121, so that the force of the torsion spring acting on the pressure relief fixing part 62 can be more effectively transmitted to the pressure relief component 60 through the second arm 6122, so that the pressure relief component 60 fits tightly with the pressure relief hole 11.

[0287] In some embodiments of this application, the second arm 6122 at least partially overlaps with the pressure relief member 60 in the width direction; so that the force of the torsion spring acting on the pressure relief fixing part 62 can be more effectively transmitted to the pressure relief member 60 through the second arm 6122, so that the pressure relief member 60 and the pressure relief hole 11 fit tightly together.

[0288] In some embodiments of this application, the central axis of the pressure relief hole 11 is located between the two opposite ends of the second support arm 6122 in the width direction. This allows the force exerted by the torsion spring on the pressure relief fixing part 62 to be transmitted to the pressure relief member 60 more efficiently through the second support arm 6122, facilitating a tight fit between the pressure relief member 60 and the pressure relief hole 11.

[0289] In some embodiments of this application, along the width direction of the door body 4, the distance between the end of the second arm 6122 of the torsion spring away from its first arm 6121 and the central axis of the pressure relief hole 11 is denoted as the first spacing J1; wherein, 0mm≤J1≤10mm.

[0290] When 10mm < J1, the gap between the second arm 6122 of the torsion spring and the pressure relief component 60 is too large, and the force applied by the second arm 6122 of the torsion spring to the pressure relief component 60 through the pressure relief fixing part 62 is too small, which reduces the airtightness of the pressure relief component 60 and the pressure relief hole 11, reduces the pumping efficiency of the pumping device, and also reduces the low-pressure holding effect of the pressure storage device 1 in maintaining a low-pressure state.

[0291] In this application, 0mm≤J1≤10mm, the distance between the second arm 6122 of the torsion spring and the pressure relief member 60 is such that the force applied by the second arm 6122 of the torsion spring to the pressure relief member 60 through the pressure relief fixing part 62 is sufficient to make the pressure relief member 60 press against the pressure relief hole 11, effectively ensuring the airtightness of the two, ensuring the pumping efficiency of the pumping device, and also improving the low-pressure state maintenance capability of the low-pressure storage device 1.

[0292] In some embodiments of this application, the rotation axis of the pressure relief fixing part 62 is located on the side of the pressure relief hole 11 near the top wall of the housing 2. This arrangement ensures that the pressure relief components 6 are mainly distributed on the side of the rotation axis of the pressure relief fixing part 62 near the pressure relief hole 11, thereby reducing the obstruction of the door body 4 (transparent part 40) on the side of the rotation axis of the pressure relief fixing part 62 away from the pressure relief hole 11, and ensuring the visible area inside the storage container 3 can be observed through the transparent part 40.

[0293] In some embodiments of this application, the elastic element 61 and the pressure relief element 60 are respectively disposed on opposite sides of the pressure relief fixing part 62. The pressure relief element 60 is disposed on the side of the pressure relief fixing part 62 closest to the pressure relief hole 11. The elastic element 61 connects the side of the pressure relief fixing part 62 away from the pressure relief element 60 to the door body 4.

[0294] In some embodiments of this application, the pressure relief fixing part 62 includes a first pressure relief plate 621. A pressure relief member 60 is disposed on the first pressure relief plate 621 and located on the side of the first pressure relief plate 621 closest to the pressure relief hole 11. The first pressure relief plate 621 is rotatably connected to the door body 4 to drive the pressure relief member 60 to rotate relative to the door body 4, so that the pressure relief member 60 engages or disengages from the pressure relief hole 11, thereby closing or opening the pressure relief hole 11.

[0295] In some embodiments of this application, when the pressure relief component 60 closes the pressure relief hole 11, the included angle between the first pressure relief plate 621 and the end face of the pressure relief hole 11 near the first pressure relief plate 621 is denoted as the first included angle γ1, where 0°≤γ1≤3°.

[0296] When γ1 > 3°, γ1 is too large, resulting in a large distance between the plane where the first pressure relief plate 621 and the pressure relief hole 11 are located, and a large distance between the first pressure relief plate 621 and the end face of the pressure relief hole 11 on the door body 4 away from the storage container 3. This leads to a small clamping force of the pressure relief component 60 on the pressure relief hole 11, poor airtightness between the pressure relief hole 11 and the pressure relief component 60, reduced air extraction efficiency of the extraction device, and reduced effectiveness of the pressure storage device 1 in maintaining a low-pressure state. In addition, when γ1 is too large, the space required by the first pressure relief plate 621 in the front-to-back direction increases when the first pressure relief plate 621 rotates to move the pressure relief component 60 away from the pressure relief hole 11, requiring sufficient space to be reserved in the door body 4, resulting in an excessively large thickness of the door body 4.

[0297] In this application, 0°≤γ1≤3° ensures that the pressure relief component 60 can fit tightly with the pressure relief hole 11, effectively ensuring the airtightness of the fit and the pumping efficiency of the pumping device, while also improving the low-pressure state maintenance capability of the low-pressure storage device 1. Furthermore, with γ1 limited to a small angle range, when the first pressure relief plate 621 rotates to move the pressure relief component 60 away from the pressure relief hole 11, the space required by the first pressure relief plate 621 in the front-back direction is smaller, reducing the space occupied by the door 4 in the front-back direction and decreasing the thickness of the door 4. This allows for more space within the storage chamber with a fixed front-back dimension to increase the front-back dimension of the shell 2, thereby increasing the capacity of the low-pressure storage device 1.

[0298] In some embodiments of this application, the pressure relief fixing part 62 includes a second pressure relief plate 622. The second pressure relief plate 622 is located on the side of the first pressure relief plate 621 away from the pressure relief member 60. The second pressure relief plate 622 is connected to the door body 4 via an elastic member 61. When the elastic member 61 is set as a torsion spring, the second torsion arm 612 of the torsion spring is connected to the second pressure relief plate 622.

[0299] In some embodiments of this application, the second pressure relief plate 622 and the first pressure relief plate 621 have the same rotation axis.

[0300] The arrangement of the first pressure relief plate 621 and the second pressure relief plate 622 can limit the rotation angle of the pressure relief fixing part 62, so that the elastic member 61 has sufficient elastic force on the second pressure relief plate 622, so that the pressure relief member 60 can fit tightly with the pressure relief hole 11, effectively ensuring the airtightness of the fit between the two, ensuring the pumping efficiency of the pumping device, and also improving the low-pressure state maintenance capability of the low-pressure storage device 1.

[0301] In some embodiments of this application, such as Figure 17 The included angle between the second pressure relief plate 622 and the first pressure relief plate 621 is denoted as the second included angle γ2. Wherein, 55°≤γ2≤75°.

[0302] When γ2 > 75°, γ2 is too large, and the dihedral angle between the two adjacent surfaces of the second pressure relief plate 622 and the first pressure relief plate 621 is too large. When the second pressure relief plate 622 and the first pressure relief plate 621 rotate to drive the pressure relief component 60 away from the pressure relief hole 11, the space required by the second pressure relief plate 622 in the front-back direction increases, and the door body 4 needs to reserve enough space, resulting in the door body 4 being too thick.

[0303] When γ2 < 55°, γ2 is too small, and the dihedral angle between the two adjacent surfaces of the second pressure relief plate 622 and the first pressure relief plate 621 is too small. This results in an excessively large opening angle between the first torsion arm 611 and the first support arm 6121 of the torsion spring. Consequently, the force exerted by the torsion spring on the second pressure relief plate 622 is small, resulting in a small clamping force of the pressure relief component 60 on the pressure relief hole 11. This leads to poor airtightness between the pressure relief hole 11 and the pressure relief component 60, reducing the pumping efficiency of the pumping device and also reducing the effect of the pressure storage device 1 in maintaining a low-pressure state.

[0304] The setting of γ2≤75° in this application makes the space required by the second pressure relief plate 622 in the front-back direction smaller when the second pressure relief plate 622 rotates to drive the pressure relief component 60 away from the pressure relief hole 11. This reduces the space occupied by the door body 4 in the front-back direction and reduces the thickness of the door body 4. This allows for more space in the storage room with a fixed front-back dimension to increase the front-back dimension of the shell 2 and increase the capacity of the low-pressure storage device 1.

[0305] The setting of 55°≤γ2 in this application ensures that the opening angle between the first torsion arm 611 and the second torsion arm 612 (first support arm 6121) of the torsion spring has sufficient force, so that the pressure relief component 60 can fit tightly with the pressure relief hole 11, effectively ensuring the airtightness of the fit between the two, ensuring the pumping efficiency of the pumping device, and also improving the low-pressure state maintenance capability of the low-pressure storage device 1.

[0306] In this application, the setting of 55°≤γ2≤75° on the one hand makes the space required by the second pressure relief plate 622 in the front-back direction smaller when the second pressure relief plate 622 rotates to drive the pressure relief component 60 away from the pressure relief hole 11, thereby reducing the space occupied by the door body 4 in the front-back direction and reducing the thickness of the door body 4; it also allows more space in the storage chamber with a fixed front-back dimension to increase the front-back dimension of the shell 2 and increase the capacity of the low-pressure storage device 1; on the other hand, it makes the opening angle between the first torsion arm 611 and the second torsion arm 612 (first support arm 6121) of the torsion spring have sufficient force, so that the pressure relief component 60 can fit tightly with the pressure relief hole 11, effectively ensuring the airtightness of the fit between the two, ensuring the pumping efficiency of the pumping device, and also improving the low-pressure state maintenance capability of the low-pressure storage device 1.

[0307] In some embodiments of this application, the radial dimension of the first pressure relief plate 621 is denoted as the first radius R1; wherein, 35mm≤R1≤55mm.

[0308] When R1 < 35mm, R1 is too small. Due to the size limitation of the first pressure relief plate 621, the size of the pressure relief component 60 installed on the first pressure relief plate 621 is small. In order to ensure the sealing performance of the pressure relief component 60 when sealing the pressure relief hole 11, the diameter of the pressure relief hole 11 opened or closed by the pressure relief component 60 is reduced accordingly. The small diameter of the pressure relief hole 11 results in a narrow airflow path, which causes low efficiency of internal and external air pressure balance during pressure relief.

[0309] When 55mm < R1, R1 is too large, and the first pressure relief plate 621 blocks too much area of ​​the transparent part 40, resulting in a reduction in the visibility area of ​​the transparent part 40, which is not conducive to observing the food placed in the low-pressure storage device 1.

[0310] In this application, when 35mm≤R1, the diameter of the pressure relief hole 11 is large enough to allow airflow to pass through quickly, thereby improving the efficiency of internal and external air pressure balance.

[0311] In this application, when ≤R1≤55mm, the area obstructed by the transparent part 40 can be reduced to ensure the visibility area and facilitate observation of the food inside the low-pressure storage device 1 through the transparent part 40.

[0312] In this application, the setting of 35mm≤R1≤55mm can, on the one hand, enable the pressure relief hole 11 to pass through the airflow quickly enough to improve the efficiency of internal and external air pressure balance; on the other hand, it reduces the area of ​​obstruction of the transparent part 40 to ensure the visibility area and facilitate the observation of the food in the low-pressure storage device 1 through the transparent part 40.

[0313] In some embodiments of this application, the radial dimension of the second pressure relief plate 622 is denoted as the second radius R2; wherein, 10mm≤R2≤30mm.

[0314] When R2 < 10mm, the radial dimension of the second pressure relief plate 622 is too small, the lever arm of the force applied by the elastic element 61 (torsion spring) to the second pressure relief plate 622 is small, the torque of the elastic element 61 causing the second pressure relief plate 622 to rotate is small, and the ability of the elastic element 61 to cause the pressure relief fixing part 62 to change its motion state is small.

[0315] When 30mm < R2, the radial dimension of the second pressure relief plate 622 is too large. During the process of rotating the second pressure relief plate 622 to drive the pressure relief component 60 away from the pressure relief hole 11, a larger space is required in the front-to-back direction. The door body 4 needs to reserve enough space, resulting in the door body 4 being too thick.

[0316] When 10mm≤R2, the elastic element 61 has sufficient torque to cause the second pressure relief plate 622 to rotate.

[0317] When R2≤30mm, the second pressure relief plate 622 rotates to move the pressure relief component 60 away from the pressure relief hole 11, the space required by the second pressure relief plate 622 in the front-back direction is smaller, which can reduce the space occupied by the door body 4 in the front-back direction and reduce the thickness of the door body 4; thus, there is more space in the storage room with a fixed front-back dimension to increase the front-back dimension of the shell 2 and increase the capacity of the low-pressure storage device 1.

[0318] In this application, the setting of 10mm≤R2≤30mm ensures that the elastic element 61 has sufficient torque to cause the second pressure relief plate 622 to rotate. On the other hand, when the second pressure relief plate 622 rotates to move the pressure relief element 60 away from the pressure relief hole 11, the space required by the second pressure relief plate 622 in the front-back direction is smaller, which can reduce the space occupied by the door body 4 in the front-back direction and reduce the thickness of the door body 4. This allows for more space in the storage chamber with a fixed front-back dimension to increase the front-back dimension of the shell 2 and increase the capacity of the low-pressure storage device 1.

[0319] In some embodiments of this application, the pressure relief fixing part 62 includes a reinforcing part 623, which connects the first pressure relief plate 621 and the second pressure relief plate 622 to strengthen the connection strength between the first pressure relief plate 621 and the second pressure relief plate 622 and increase the integrity of the first pressure relief plate 621 and the second pressure relief plate 622.

[0320] In some embodiments of this application, the reinforcing portion 623 is plate-shaped. The reinforcing portion 623 includes a first connecting edge and a second connecting edge connected to each other. The first connecting edge of the reinforcing portion 623 is connected to a second pressure relief plate 622. The first connecting edge extends radially along the second pressure relief plate 622 perpendicular to its axis of rotation. The second connecting edge of the reinforcing portion 623 is connected to a first pressure relief plate 621. The second connecting edge extends radially along the first pressure relief plate 621 perpendicular to its axis of rotation.

[0321] The reinforcing part 623 includes a third connecting edge, which connects one end of the first connecting edge away from the rotation axis of the pressure relief fixing part 62 and the other end of the second connecting edge away from the rotation axis of the pressure relief fixing part 62. This arrangement ensures that the reinforcing part 623 is positioned within the space between the first pressure relief plate 621 and the second pressure relief plate 622, without increasing space occupancy and preventing an increase in the thickness of the door body 4 due to the reinforcing part 623.

[0322] In some embodiments of this application, when the door 4 is closed, the projection of the second pressure relief plate 622 includes the projection of the reinforcing part 623 in a plane projection perpendicular to the height direction. This arrangement ensures that the reinforcing part 623 is disposed within the space between the first pressure relief plate 621 and the second pressure relief plate 622, without additional space occupation, and avoids further increase in the thickness of the door 4 due to the reinforcing part 623.

[0323] In some embodiments of this application, multiple reinforcing portions 623 are distributed along the rotation axis of the pressure relief fixing portion 62.

[0324] In some embodiments of this application, the minimum distance between the first arm 6121 of the torsion spring and the reinforcing part 623 along the width direction is denoted as the second spacing J2. 0mm≤J2≤5mm.

[0325] When 5mm < J2, the gap between the first arm 6121 of the torsion spring and the reinforcing part 623 is too large. The force exerted by the first arm 6121 of the torsion spring on the first pressure relief plate 621 through the second pressure relief plate 622 and the reinforcing part 623 is too small, resulting in a small force on the pressure relief component 60. This reduces the airtightness of the pressure relief component 60 and the pressure relief hole 11, reduces the pumping efficiency of the pumping device, and also reduces the effect of the pressure storage device 1 in maintaining a low-pressure state.

[0326] In this application, 0mm≤J1≤5mm, the first arm 6121 of the torsion spring is close to the reinforcing part 623, and the torsion spring can efficiently transmit the force to the first pressure relief plate 621 through the second pressure relief plate 622 and the reinforcing part 623, so as to ensure that there is sufficient force on the pressure relief component 60 so that the pressure relief component 60 presses the pressure relief hole 11, effectively ensuring the airtightness of the two, ensuring the air extraction efficiency of the air extraction device, and also improving the low-pressure state maintenance capability of the low-pressure storage device 1.

[0327] It should be noted that the minimum distance between the first arm 6121 and the reinforcing part 623 of the torsion spring is the distance between the first arm 6121 and the reinforcing part 623 with the same reference point. For example, the distance between the midpoint of the first arm 6121 and the midpoint of the reinforcing part 623 along the width direction.

[0328] In some embodiments of this application, the pressure relief fixing part 62 includes a rotating column 620. A first pressure relief plate 621 and a second pressure relief plate 622 are arranged circumferentially along the rotating column 620. The rotating column 620 is rotatably connected to the transparent part 40 of the door body 4.

[0329] In some embodiments of this application, the elastic element 61 is fitted onto one end of the rotating column 620 along its central axis. For example, when the elastic element 61 is configured as a torsion spring, its torsion spring body 610 is fitted onto the rotating column 620 and located at the end of the rotating column 620.

[0330] In some embodiments of this application, such as Figures 13-15 , Figures 18-21 The pressure relief assembly 6 includes a transmission connection 63 connected to the pressure relief fixing part 62. The transmission connection 63 is used to drive the pressure relief fixing part 62 to move relative to the door body 4, so that the pressure relief member 60 opens or closes the pressure relief hole 11.

[0331] In some embodiments of this application, the transmission connection 63 is connected to the handle 53. When the handle 53 rotates relative to the door body 4, the handle 53 drives the pressure relief fixing part 62 to move relative to the door body 4 through the transmission connection 63, so as to drive the pressure relief member 60 to open or close the pressure relief hole 11.

[0332] In some embodiments of this application, the transmission connection 63 includes a first transmission part 631 connected to the pressure relief fixing part 62. The first transmission part 631 is used to drive the pressure relief fixing part 62 to rotate.

[0333] In some embodiments of this application, the first transmission part 631 is located at the end of the rotating column 620 along its central axis.

[0334] In some embodiments of this application, the elastic element 61 is located (fitted) at one end of the rotating column 620 along its central axis and close to the first transmission part 631. For example, when the elastic element 61 is configured as a torsion spring, its torsion spring body 610 is fitted onto the end of the rotating column 620 and close to the first transmission part 631. This arrangement of the elastic element 61 (torsion spring) close to the first transmission part 631 ensures that the force exerted by the first transmission part 631 is efficiently transmitted to the elastic element 61, enabling the elastic element 61 to deform stably and improving the overall motion stability of the pressure relief fixing part 62.

[0335] In some embodiments of this application, two first transmission parts 631 are located at opposite ends of the rotating column 620 along its central axis. This allows the pressure relief fixing part 62 to rotate synchronously from opposite ends along its rotation axis, thereby improving the rotational stability of the pressure relief fixing part 62.

[0336] In some embodiments of this application, the two ends of the rotating column 620 are fixedly connected to the corresponding first transmission part 631. The first transmission part 631 drives the rotating column 620 to rotate, thereby driving the pressure relief fixing part 62 to move as a whole, which in turn drives the pressure relief member 60 provided on the pressure relief fixing part 62 to move, so as to open or close the pressure relief hole 11.

[0337] In some embodiments of this application, such as Figure 21 The first pressure relief plate 621 is fixedly connected to the corresponding first transmission part 631 at its two opposite ends along its rotation axis. The first transmission part 631 drives the first pressure relief plate 621 to rotate, thereby driving the pressure relief fixing part 62 to move as a whole, which in turn drives the pressure relief member 60 provided on the pressure relief fixing part 62 to move, so as to open or close the pressure relief hole 11.

[0338] In some embodiments of this application, the two ends of the rotating column 620 are fixedly connected to the corresponding first transmission part 631, and the two opposite ends of the first pressure relief plate 621 along its rotation axis are fixedly connected to the corresponding first transmission part 631. This arrangement enhances the connection strength between the transmission connection part 63 and the pressure relief fixing part 62, further improving the rotational stability of the pressure relief fixing part 62.

[0339] In some embodiments of this application, the first transmission part 631 is connected to the handle 53. The handle 53 drives the second locking part 52 to move, separating it from the first locking part 51, while simultaneously driving the first transmission part 631. The first transmission part 631 then drives the pressure relief fixing part 62 to move, causing the pressure relief component 60 to move away from the pressure relief hole 11. This allows gas outside the low-pressure storage device 1 to enter its interior through the pressure relief hole 11, reducing the pressure difference between the inside and outside of the low-pressure storage device 1 and facilitating the opening of the door 4. This configuration links the pressure relief component 6 with the locking component 5, allowing pressure relief to occur simultaneously with opening the door 4 via the handle 53, making operation more convenient and faster.

[0340] In some embodiments of this application, the transmission connection 63 includes a second transmission part 632 that connects the first transmission part 631 and the handle 53.

[0341] In some embodiments of this application, the second transmission part 632 is configured as a connecting groove. The bottom of the connecting groove, away from its opening, is connected to the first transmission part 631. The handle 53 is installed in the connecting groove. The configuration of the second transmission part 632 as a connecting groove makes the installation of the handle 53 and the connecting groove more convenient and quick.

[0342] In some embodiments of this application, the second transmission part 632 and the first transmission part 631 connected thereto are integrally formed.

[0343] In some embodiments of this application, the second transmission part 632 is connected to the corresponding first transmission part 631. Each first transmission part 631 may be provided with a second transmission part 632 (connecting groove), and the second transmission part 632 (connecting groove) is connected to the handle 53. The user can apply force to the handle 53 located between the two second transmission parts 632 to drive the handle 53 to move, which in turn drives the first transmission part 631 to move, and the first transmission part 631 drives the pressure relief fixing part 62 to move, thereby opening or closing the pressure relief hole 11 of the pressure relief member 60. Simultaneously, the handle 53 drives the second locking part 52 to move, locking or unlocking the second locking part 52 with the first locking part 51.

[0344] In some embodiments of this application, the second transmission part 632 connects two first transmission parts 631 located at opposite ends of the pressure relief fixing part 62 along its rotation axis (central axis). Alternatively, a second transmission part 632 (connecting groove) can connect the two first transmission parts 631; then, it connects to the handle 53 via the second transmission part 632 (connecting groove). The user can apply force to the second transmission part 632 located between the two first transmission parts 631 to drive the handle 53, thereby moving the first transmission parts 631 via the second transmission part 632, and moving the pressure relief fixing part 62 via the first transmission parts 631, thus opening or closing the pressure relief hole 11 of the pressure relief member 60; simultaneously, the handle 53 moves the second locking part 52, locking or unlocking the second locking part 52 with the first locking part 51.

[0345] In this application, the first transmission part 631 includes a transmission plate 6310. When the transmission plate 6310 rotates under the drive of the second transmission part 632, the transmission plate 6310 drives the pressure relief fixing part 62 to rotate, and the pressure relief member 60 opens or closes the pressure relief hole 11.

[0346] In some embodiments of this application, the transmission plate 6310 is flat and includes a first transmission plate strip 63101, a second transmission plate strip 63102 and a third transmission plate strip 63103 connected end to end in sequence.

[0347] The transmission plate 6310 includes a fourth transmission plate 63104 located at the connection between the first transmission plate 63101 and the third transmission plate 63103. The fourth transmission plate 63104 and the first transmission plate 63101 are located on the same side of the third transmission plate 63103. The fourth transmission plate 63104 and the first transmission plate 63101 form an acute angle.

[0348] The arrangement of the first transmission part 631 as described above results in a small space occupied by the first transmission part 631 in the width of the door body 4, and a small area of ​​the first transmission part 631 obstructing the transparent part 40 of the door body 4, thereby increasing the area of ​​the visible transparent area of ​​the door body 4.

[0349] In some embodiments of this application, the rotation axis of the rotating column 620 passes through the connection between the second transmission strip 63102 and the third transmission strip 63103. The end of the fourth transmission strip 63104 away from the third transmission strip 63103 is fixed to the handle 53 via the second transmission part 632 (connecting groove). When the handle 53 rotates, the handle 53 drives the first transmission part 631 to rotate around its rotation axis located at the connection between the second transmission strip 63102 and the third transmission strip 63103 via the fourth transmission strip 63104.

[0350] It should be noted that the transmission connection part 63, the pressure relief fixing part 62, and the handle 53 share a common rotating shaft.

[0351] In some embodiments of this application, in the plane projection perpendicular to the rotation axis (the rotation axis of the handle 53 / transmission connection 63 / pressure relief fixing part 62), the projection of the first transmission plate 63101 coincides with the projection of the first locking plate 5201; the projection of the second locking plate 5202 includes the projection of the second transmission plate 63102. This arrangement improves the structural consistency between the locking plate 520 and the transmission plate 6310, effectively ensuring the motion consistency between the second locking part 52 (locking plate 520) and the first transmission part 631 (transmission plate 6310) when the handle 53 drives the second locking part 52 and the first transmission part 631, thus improving the stability of the linkage motion between the pressure relief assembly 6 and the locking assembly 5.

[0352] In some embodiments of this application, in the planar projection perpendicular to the rotation axis (the rotation axis of handle 53 / transmission connection 63 / pressure relief fixing part 62), the overall outer contour projection of the first locking plate 5201, the second locking plate 5202, and the third locking plate 5203 includes the overall outer contour projection of the first transmission plate 63101, the second transmission plate 63102, and the third transmission plate 63103. This arrangement results in a higher consistency in shape between the locking plate 520 and the transmission plate 6310, and makes full use of space, avoiding the additional space occupied by the first transmission part 631 that would increase the volume of the door body 4.

[0353] It should be noted that, in the foregoing description of this application, the second transmission part 632 is linked with the handle 53 of the locking component 5, so that the pressure relief component and the locking component 5 are linked. In some embodiments of this application, the second transmission part 632 of the pressure relief component 6 is not linked with the handle of the locking component 5, so that the pressure relief component 6 can work independently and control the pressure relief member 60 to close or open the pressure relief hole 11 independently. In this case, by applying a force to the second transmission part 623 to make it move, the first transmission part 631 can drive the pressure relief fixing part 62 and the pressure relief member 60 fixed thereon to move, so that the pressure relief member 60 closes or opens the pressure relief hole 11.

[0354] In some embodiments of this application, such as Figure 21 The end of the first pressure relief plate 621 along the rotation axis of the handle 53 is connected to the third transmission plate 63103 on the corresponding side. This enhances the connection strength between the transmission connection part 63 and the pressure relief fixing part 62, and further improves the rotational stability of the pressure relief fixing part 62.

[0355] In this application, the area occupied by the pressure relief component 6 in the transparent portion 40 of the door body 4 is limited to increase the visible area of ​​the storage container 3 through the transparent portion 40. Furthermore, the pressure relief component 6 is linked to the locking component 5 via the transmission connection portion 63, so that pressure is released simultaneously when the door body 4 is opened via the handle 53, making operation convenient and quick.

[0356] In some embodiments of this application, the door 4 includes a shielding portion 41. The shielding portion 41 is used to shield the pressure relief assembly 6 disposed on the door 4. The storage opening 21 is covered by the transparent portion 40, and the shielding portion 41 is disposed on the side of the transparent portion 40 away from the storage container 3 to shield the pressure relief assembly 6.

[0357] In some embodiments of this application, a receiving portion 45 protruding toward the container 3 is formed on the transparent portion 40. The pressure relief assembly 6 is housed within the receiving portion 45. The blocking portion 41 is connected to the receiving portion 45 to block the pressure relief assembly 6 located within the receiving portion 45.

[0358] In some embodiments of this application, the receiving portion 45 is located in the middle region of the transparent portion 40 along the width direction. The pressure relief assembly 6 is located in the middle region of the transparent portion 40 of the door body 4 along the width direction. This arrangement makes it more stable for the handle 53 to drive the pressure relief member 60 to move via the transmission connection portion 63 while driving the second locking portion 52 to move.

[0359] It should be noted that the setting of pressure relief component 6 is the same as described above, and will not be repeated here.

[0360] In some embodiments of this application, the dimension of the shielding part 41 along the width direction (along the direction of the rotation axis of the pressure relief fixing part) is denoted as the first width dimension Z1, and the dimension of the door body 3 is denoted as the second width dimension Z2. Wherein, 0.1≤Z1:Z2≤0.5.

[0361] When Z1:Z2<0.1, the width occupied by the shielding part 41 is too small, and the width of the pressure relief component 6 is too small, resulting in the low strength of the pressure relief component 6.

[0362] When 0.5 < Z1:Z2, the width occupied by the blocking part 41 is too large, the blocking area of ​​the transparent part 40 is too large, the visibility area of ​​the transparent part 40 corresponding to the storage port 21 is reduced, which is not conducive to observing the food in the low-pressure storage device 1.

[0363] In this application, 0.1≤Z1:Z2 ensures that the pressure relief component 6 has sufficient strength to ensure its effective function.

[0364] In this application, the setting of Z1:Z2≤0.5 limits the area of ​​the transparent part 40 blocked by the blocking part 41, increases the visibility area of ​​the transparent part 40 corresponding to the storage port 21, and makes it easier for users to observe the food in the low-pressure storage device 1.

[0365] In this application, the setting of 0.1≤Z1:Z2≤0.5 ensures that the pressure relief component 6 has sufficient strength to guarantee its effective function. Furthermore, limiting the area of ​​the transparent portion 40 blocked by the shielding portion 41 increases the visibility area of ​​the transparent portion 40 corresponding to the storage opening 21, making it easier for the user to observe the food inside the low-pressure storage device 1.

[0366] In some embodiments of this application, such as Figures 22-23 Along the height direction (along the direction perpendicular to the bottom plate of the storage container 3), the dimension of the shielding part 41 is denoted as the first height dimension H1; the dimension of the transparent visible area located above the shielding part 41 is denoted as the second height dimension H2. Wherein, 1≤H1:H2≤3.

[0367] When H1:H2<1, the height occupied by the shielding part 41 is too small, the height of the pressure relief component 6 is too small, resulting in the pressure relief component 6 having too low strength.

[0368] When 3 < H1: H2, the height occupied by the blocking part 41 is too large, the blocking area of ​​the transparent part 40 is too large, the visibility area of ​​the transparent part 40 corresponding to the storage port 21 is reduced, which is not conducive to observing the food in the low-pressure storage device 1.

[0369] In this application, 1≤H1:H2 ensures that the pressure relief assembly 6 has sufficient strength to ensure the effective function of the pressure relief assembly 6.

[0370] In this application, the setting of H1:H2≤3 limits the area of ​​the transparent part 40 blocked by the blocking part 41, increases the visibility area of ​​the transparent part 40 corresponding to the storage port 21, and makes it easier for users to observe the food in the low-pressure storage device 1.

[0371] In this application, the setting of 1≤H1:H2≤3 ensures that the pressure relief component 6 has sufficient strength to ensure its effective function. On the other hand, it limits the area of ​​the transparent part 40 blocked by the shielding part 41, increases the visibility area of ​​the transparent part 40 corresponding to the storage port 21, and facilitates the user's observation of the food inside the low-pressure storage device 1.

[0372] It should be noted that the transparent visible area above the shielding part 41 refers to the area that belongs to the transparent part 40 but is not shielded, and the internal space of the storage container 3 can be observed.

[0373] In some embodiments of this application, such as Figure 15 , 22The transparent portion 40 has locking connectors 43 at its two opposite ends along its width direction, and the second locking portion 52 is fixedly connected to the door body 4 through the locking connectors 43. The door body 4 includes a first blocking member 42, which is provided at the two opposite ends of the transparent portion 40 along its width direction to block the locking connectors 43 on the corresponding sides, thereby increasing the overall fit and aesthetics of the door body 4.

[0374] In some embodiments of this application, the first blocking member 42 blocks the sealing element 7 on the corresponding side while blocking the locking connector 3, so as to increase the overall adaptability and aesthetics of the door 4.

[0375] In some embodiments of this application, as shown in the figures Figures 22-23 The door body 4 includes a second blocking member 44. The second blocking member 44 is provided along the upper end of the door body 4 and is used to block the first sealing part 71 of the sealing element 7 to increase the overall fit and aesthetics of the door body 4.

[0376] In some embodiments of this application, the second blocking member 44 is provided along the lower end of the door body 4 to block the third sealing part 73 of the sealing element 7.

[0377] In some embodiments of this application, the third sealing part 73 is located at the lower end of the door body 4. The third sealing part 73 is easily observed and does not affect the overall aesthetics of the door body 4, and does not require the second blocking member 44 to block it.

[0378] In some embodiments of this application, the third sealing part 73 is located at the lower end of the door body 4, and the third sealing part 73 is covered by the handle 53 when it is in the locked state; the third sealing part 73 does not affect the overall aesthetics of the door body 4, and there is no need to set a second covering part 44 separately for covering.

[0379] In some embodiments of this application, in the projection onto a plane perpendicular to the width direction, the front surface of the door body 4 is a curved shape protruding away from the storage container 3. Alternatively, in the projection onto a plane perpendicular to the width direction, the front surface of the door body 4 is an arc shape protruding away from the storage container 3. This arrangement increases the contact area between the door body 4 and the external environment, thereby increasing the pressure-bearing capacity of the door body 4 and improving its resistance to deformation.

[0380] In some embodiments of this application, the transparent portion 40 cooperates with the first mounting portion 34 on the storage container 3 to fix the storage container 3 to the door 4. The pressure relief hole 11 penetrates the transparent portion 40 and is blocked by the first mounting portion 34. That is, the pressure relief hole 11 is located in the area where the transparent portion 40 and the first mounting portion 34 cooperate, so that the first mounting portion 34 blocks the pressure relief hole 11, making it impossible to see the pressure relief hole 11 from inside the storage container 3, thus achieving a hidden setting of the pressure relief hole 11; avoiding the blockage of the pressure relief hole 11 by items placed in the storage container 3, which would prevent normal or efficient pressure relief; it also ensures that the pressure relief hole is effectively sealed during vacuuming, ensuring the vacuuming efficiency of the vacuuming device, and improving the low-pressure state maintenance capability of the low-pressure storage device.

[0381] In some embodiments of this application, the pressure relief hole 11 is connected to the internal space of the low-pressure storage device 1 through the fitting gap between the first mounting part 34 and the transparent part 40.

[0382] In some embodiments of this application, such as Figure 5 , Figures 24-27 The first mounting part 34 includes a first support part 341. The first support part 341 includes a support groove bottom 3410, a first support groove wall 3411, and a second support groove wall 3412. The support groove bottom 3410 is arranged along the height direction. Optionally, the support groove bottom 3410 is parallel to the plane where the storage port 21 is located.

[0383] The first support groove wall 3411 and the second support groove wall 3412 are located on the side of the support groove bottom 3410 closest to the door body 4. The first support groove wall 3411 is connected to the top of the support groove bottom 3410, and the second support groove bottom 3410 is connected to the bottom of the support groove bottom 3410. The first support groove wall 3411, the support groove bottom 3410, and the second support groove wall 3412 are connected in sequence to define the support groove.

[0384] In some embodiments of this application, a first connector 3413 is provided in the support groove. The first connector 3413 is sequentially connected to the first support groove wall 3411, the support groove bottom 3410, and the second support groove wall 3412 to enhance the overall strength of the support groove.

[0385] In some embodiments of this application, a plurality of first connectors 3413 are spaced apart along the extension direction (width direction) of the support groove.

[0386] In some embodiments of this application, the first mounting portion 34 includes a first assembly portion 342. The first assembly portion 342 includes a first mating plate 3421, a second mating plate 3422, and a third mating plate 3423. The second mating plate 3422 is disposed along the height direction. Optionally, the second mating plate 3422 is parallel to the plane containing the storage port 21.

[0387] The first mating plate 3421 and the third mating plate 3423 are located on the side of the second mating plate 3422 closer to the door body 4. The top of the first mating plate 3421 is connected to the top of the second mating plate 3422, and the bottom of the third mating plate 3423 is connected to the bottom of the second mating plate 3422.

[0388] In some embodiments of this application, the height of the second mating plate 3422 is greater than the height of the support groove bottom 3410. The first mating plate 3421 is located above the first support groove wall 3411. This causes the first support part 341 and the first assembly part 342 to be misaligned in the height direction to cooperate with the door body 4, thereby enhancing the connection stability between the door body 4 and the storage container 3.

[0389] In some embodiments of this application, the second mating plate 3422 is located behind the bottom of the support groove 3410 in the front-back direction. This causes the first support portion 341 and the first assembly portion 342 to be misaligned in the front-back direction when mating with the door body 4, enhancing the connection stability between the door body 4 and the storage container 3. The misalignment of the first support portion 341 and the first assembly portion 342 in the front-back direction when mating with the door body 4 also limits the relative position of the door body 4 and the storage container 3 in the width direction, thus improving the connection stability between the door body 4 and the storage container 3 in the width direction.

[0390] In some embodiments of this application, the upper surface of the third mating plate 3423 is coplanar with the upper surface of the second support groove wall 3412. The lower surface of the third mating plate 3423 is coplanar with the lower surface of the second support groove wall 3412. This arrangement makes the third mating plate 3423 and the second support groove wall 3412 have integrality and overall integrity, effectively increasing the overall strength of the first support part 341 and the first assembly part 342.

[0391] In some embodiments of this application, the upper surface of the third mating plate 3423, the upper surface of the second support groove wall 3412, and the upper surface of the storage base plate 30 are coplanar. The lower surface of the third mating plate 3423, the lower surface of the second support groove wall 3412, and the lower surface of the storage base plate 30 are also coplanar. This arrangement ensures that the third mating plate 3423, the second support groove wall 3412, and the storage base plate 30 possess integrity and unity, effectively guaranteeing the overall strength of the storage container 3.

[0392] In some embodiments of this application, the first support portion 341 and the first assembly portion 342 are arranged adjacent to each other.

[0393] In some embodiments of this application, the two first support portions 341 are located on opposite sides of the first assembly portion 342. This arrangement increases the misalignment segment that limits relative displacement, thereby enhancing the connection stability between the door body 4 and the storage container 3.

[0394] In some embodiments of this application, the second mating plate 3422 is located on the side of the support groove bottom 3410 away from the door body 4. Along the width direction, a first connecting plate 3424 is provided at the end of the second mating plate 3422 near the support groove bottom 3410. The first connecting plate 3424 connects the second mating plate 3422, the support groove bottom 3410 adjacent to the second mating plate 3422, and the first support groove wall 3411. This arrangement increases the overall integrity of the first support portion 341 and the first assembly portion 342, thereby increasing their connection strength and improving the assembly strength of the door body 4 and the storage container 3.

[0395] In some embodiments of this application, a first mating plate 3421 is disposed at the top of a first connecting plate 3424. The first mating plate 3421 disposed at the top of a second mating plate 3422 is connected to the first mating plate 3421 disposed at the top of the first connecting plate 3424. The first mating plate 6421 connects the first connecting plate 6424 and the second mating plate 3422 into a single unit, enhancing the integrity and robustness of the first assembly part 342.

[0396] In some embodiments of this application, the first assembly part 342 includes a second connector 3425, which sequentially connects the first mating plate 3421, the second mating plate 3422 and the third mating plate 3423 to enhance the overall strength of the first assembly part 342.

[0397] In some embodiments of this application, a plurality of second connectors 3425 are spaced apart along the width direction.

[0398] In some embodiments of this application, see Figures 6-7 , Figure 21 The door body 4 includes a second mounting portion 46. The second mounting portion 46 is used to cooperate with the first mounting portion 34 on the storage container 3 to connect the door body 4 to the storage container 3.

[0399] In some embodiments of this application, the second mounting portion 46 is formed on the transparent portion 40 of the door body 4.

[0400] In some embodiments of this application, the second mounting portion 46 includes a second support portion 461. The second support portion 461 includes a first support plate 4611 and a second support plate 4612 spaced apart. The first support plate 4611 and the second support plate 4612 extend in the width direction. In the height direction, the first support plate 4611 is located above the second support plate 4612.

[0401] In some embodiments of this application, the second mounting portion 46 includes a second assembly portion 462. The second assembly portion 462 includes a first assembly plate 4621, a second assembly plate 4622, and a third assembly plate 4623 connected sequentially. The second assembly plate 4622 is arranged along the height direction, while the first assembly plate 4621 and the third assembly plate 4623 are arranged along the front-rear direction. The first assembly plate 4621 is connected to the top end of the second assembly plate 4622 and is located on the side of the second assembly plate 4622 closest to the storage container 3. The third assembly plate 4623 is connected to the bottom end of the second assembly plate 4622 and is located on the side of the second assembly plate 4622 away from the storage container 3.

[0402] In some embodiments of this application, the second support portion 461 and the second assembly portion 462 are arranged adjacent to each other.

[0403] In some embodiments of this application, two second support portions 461 are located on opposite sides of the second assembly portion 462.

[0404] In some embodiments of this application, along the height direction, the third mounting plate 4623 of the second mounting portion 462 is located above the second support plate 4612 of the second support portion 461. The third mounting plate 4623 of the second mounting portion 462 and the second support plate 4612 of the second support portion 461 together define an assembly channel extending along the width direction.

[0405] In some embodiments of this application, the second mounting plate 4622 has an installation channel between it and the adjacent first support plate 4611 and / or second support plate 4612.

[0406] In some embodiments of this application, the second assembly portion 462 includes a fourth assembly plate 4624, which is located on the side of the second assembly plate 4622 away from the storage container 3 and connects the first assembly plate 6421, the second assembly plate 4622, and the third assembly plate 4623. An installation channel is defined between the fourth assembly plate 4624 and the end of the adjacent first support plate 4611.

[0407] In some embodiments of this application, the pressure relief hole 11 penetrates the second assembly plate 4622.

[0408] In some embodiments of this application, the first mounting plate 4621, the second mounting plate 4622, the third mounting plate 4623, and the fourth mounting plate 4624 all define a portion of the receiving portion 45 that houses the pressure relief assembly 6. That is, the receiving portion 45 includes the second mounting portion 462.

[0409] In some embodiments of this application, such as Figures 28-31The door body 4 includes a first limiting part 47 near its top. The first limiting part 47 is used to cooperate with the top plate of the housing 2 to limit the amount of deformation of the housing 2 in the height direction, so as to prevent the housing 2 from being damaged due to excessive deformation during vacuuming.

[0410] In some embodiments of this application, the receiving portion 45 includes a first limiting portion 47.

[0411] In some embodiments of this application, the first limiting portion 47 is located above the second assembly portion 462. This is to give the first limiting portion 47 and the second assembly portion 462 better force transmission performance along the height direction.

[0412] In some embodiments of this application, such as Figure 13 , Figure 29 The door body 4 is provided with a second limiting part 48 extending along the height direction. The second limiting part 48 can effectively limit the amount of deformation of the door body 4 along the height direction, preventing the housing 2 from deforming too much and breaking during vacuuming. When the vacuuming device is evacuating, the cooperation between the door body 4 and the storage container 3 in the height direction further limits the amount of deformation of the housing 2 in the height direction, preventing the housing 2 from deforming too much and breaking during vacuuming. In some embodiments of this application, the second limiting part 48 extending along the height direction is located in the area above the pressure relief assembly 6 of the transparent portion 40 of the door body 4.

[0413] In some embodiments of this application, the second limiting part 48 connects the first limiting part 47 and the first assembly plate 4621 to enhance the force transmission performance of the first limiting part 47 and the second assembly part 462 along the height direction, effectively limit the deformation of the shell 2, and prevent the shell 2 from being damaged due to excessive deformation during vacuuming.

[0414] In some embodiments of this application, a plurality of second limiting portions 48 are distributed at intervals along the width direction.

[0415] In some embodiments of this application, the second limiting part 48 is configured as a flat plate.

[0416] In some embodiments of this application, such as Figures 28-31 When the door body 4 is connected to the storage container 3, the first support groove wall 3411 on the storage container 3 cooperates with the first support plate 4611 on the door body 4. The first support groove wall 3411 on the storage container 3 is located below the first support plate 4611 on the door body 4.

[0417] The second support groove wall 3412 on the storage container 3 cooperates with the second support plate 4612 on the door body 4. The second support groove wall 3412 on the storage container 3 is located above the second support plate 4612 on the door body 4.

[0418] The first mating plate 3421 on the storage container 3 mates with the first assembly plate 4621 on the door 4. The first mating plate 3421 is located on the lower side of the first assembly plate 4621.

[0419] The third mating plate 3423 on the storage container 3 mates with the third assembly plate 4623 on the door 4. The third mating plate 3423 is located below the third assembly plate 4623. The third mating plate 3423 is situated within the assembly channel defined by the third assembly plate 4623 and the second support plate 4612.

[0420] The above configuration ensures that the storage container 3 and the door 4 interact and support each other in the height direction when connected. When the vacuum device pumps air, the shell 2 deforms due to the pressure difference between the inside and outside. The cooperation between the door 4 and the storage container 3 in the height direction can limit the amount of deformation of the shell 2 in the height direction, preventing the shell 2 from being damaged due to excessive deformation during vacuuming.

[0421] The first connecting plate 3424 on the storage container 3 is installed in the mounting channel on the door body 4. The first connecting plate 3424 is constrained between the first support plate 4611 and the second mating plate 3422 (fourth assembly plate 4624) to restrict the relative position of the storage container 3 and the door body 4 in the width direction.

[0422] The above configuration allows the storage container 3 and the door 4 to interact in the width direction when connected. When the vacuum device pumps air, the shell 2 deforms due to the pressure difference between the inside and outside. The cooperation between the door 4 and the storage container 3 in the width direction can limit the amount of deformation of the shell 2 in the width direction, preventing the shell 2 from being damaged due to excessive deformation during vacuuming.

[0423] In some embodiments of this application, when the door 4 is connected to the storage container 3, the upper surface of the first mating plate 3421 on the storage container 3 is used to mate with the lower surface of the first mounting plate 4621 on the door 4. The first mating plate 3421 on the storage container 3 is located on the side of the second mating plate 3422 closer to the door 4. The second mating plate 3422 and the second mounting plate 4622 are arranged opposite to each other, so that there is a gap channel 49 between the second mating plate 3422 on the storage container 3 and the second mounting plate 4622 on the door 4. A pressure relief hole 11 is provided on the second mounting plate 4622, and the pressure relief hole 11 is connected to the gap channel 49. The pressure relief hole 11 is blocked by the second mating plate 6422, so that the pressure relief hole 11 is hidden by the storage container 3, avoiding the pressure relief hole being blocked (avoiding items placed in the storage container from blocking the pressure relief hole), which would prevent normal or efficient pressure relief.

[0424] In some embodiments of this application, the second support groove wall 3412 is provided with a vent hole 10 for connecting the pressure relief hole 11 located on the door 4 when the door 4 is closed to the internal space of the low-pressure storage device 1. When the door 4 is connected to the storage container 3, the first support groove wall 3411 on the storage container 3 cooperates with the first support plate 4611 on the door 4. The second support groove wall 3412 on the storage container 3 cooperates with the second support plate 4612 on the door 4. This forms a ventilation channel between the bottom of the support groove 3410 and the transparent part 40. This ventilation channel is connected to the spacing channel 49, allowing the vent hole 10 on the second support groove wall 3412 to communicate with the spacing channel 49 through the ventilation channel. This allows the pressure relief hole 11 on the door 4 to be connected to the internal space of the low-pressure storage device 1 through the vent hole 10 on the second support groove wall 3412, so that when the door 4 is closed, the communication between the pressure relief hole 11 on the door 4 and the internal space of the low-pressure storage device 1 is better, thereby improving the pressure relief efficiency.

[0425] In some embodiments of this application, a vent 10 is provided on the third mating plate 3423, and the vent 10 on the third mating plate 3423 is connected to the spacing channel 49. At the same time, the pressure relief hole 11 is connected to the spacing channel 49, so that when the door 4 is closed, the pressure relief hole 11 on the door 4 has better communication with the internal space of the low-pressure storage device 1, thereby improving the pressure relief efficiency.

[0426] In some embodiments of this application, a partition 8 is provided below the bottom plate 30 of the storage container 3. When the vacuum device pumps air, the shell 2 deforms due to the pressure difference between the inside and outside. The deformation of the shell 2 in the height direction is limited by the cooperation of the door 4, the storage container 3, and the partition 8, thus preventing the shell 2 from being damaged due to excessive deformation during vacuuming.

[0427] In this application, with the door 4 closed, the vacuum device evacuates the low-pressure storage device 1, reducing the air pressure inside. Under the pressure difference between the inside and outside of the low-pressure storage device, the shell 2 deforms. The first limiting part on the transparent part 40 cooperates with the top plate of the shell 2 to limit the downward deformation of the top plate, preventing excessive deformation and damage to the shell 2 during vacuuming. The partition 8 is located between the bottom plate 30 of the storage container 3 and the bottom plate of the shell 2 to limit the upward deformation of the bottom plate of the shell 2, preventing excessive deformation and damage to the shell 2 during vacuuming. The storage container 3 and the door 4 are connected as a single unit through the cooperation of the first mounting part 34 and the second mounting part 46, allowing the force along the height direction of the low-pressure storage device 1 to be transmitted between the storage container 3 and the door 4. This ensures that the integrated drawer unit of the storage container 3 and the door 4 effectively limits the deformation of the shell 2 in the height direction, preventing excessive deformation and damage to the shell 2 during vacuuming.

[0428] In some embodiments of this application, the partition 8 is arranged in a grid pattern. In the projection of the base plate 30, the outer contour of the projection of the partition 8 includes the projection of the vent hole 10 provided on the third mating plate 3423 and / or the second support groove wall 3412. The above arrangement can prevent debris falling into the housing 2 from blocking the vent hole 10 provided on the third mating plate 3423 and / or the second support groove wall 3412, thereby ensuring the connectivity of the vent hole 10.

[0429] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0430] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A cold appliance, characterized in The cold storage device comprises: a box body defining a storage chamber; a low-pressure storage device accommodated in the storage chamber; a gas extraction device for extracting gas in the low-pressure storage device to form a low pressure in the low-pressure storage device lower than the atmospheric pressure outside the box body; the low-pressure storage device comprises: a housing having a storage opening; a storage container which can be pulled out or pushed into the housing; the storage container comprises: a first mounting portion which is away from the rear wall of the housing when the storage container is in a pushed-in state; a door body for closing or opening the storage opening; the door body comprises: a second mounting portion for cooperating with the first mounting portion to connect the door body and the storage container; a first limiting portion near the top of the door body; when the door body closes the storage opening, the first limiting portion is located on the lower side of the top plate of the housing for cooperating with the top plate of the housing; a barrier between the bottom plate of the storage container and the bottom plate of the housing for cooperating with the bottom plate of the storage container and the bottom plate of the housing.

2. The cold storage device according to claim 1, wherein the first mounting portion comprises a first support portion; the first support portion comprises: a support groove bottom provided along the height direction of the low-pressure storage device; a first support groove wall connected to the top end of the support groove bottom and located on the side of the support groove bottom close to the door body; a second support groove wall connected to the bottom end of the support groove bottom and located on the side of the support groove bottom close to the door body; the second mounting portion comprises a second support portion; the second support portion comprises: a first support plate; a second support plate spaced apart from the first support plate along the height direction of the low-pressure storage device; the first support plate is located above the second support plate; wherein the first support groove wall cooperates with the first support plate, and the first support groove wall is located below the first support plate; the second support groove wall cooperates with the second support plate, and the second support groove wall is located above the second support plate.

3. The cold appliance of claim 2, characterized in that the first mounting portion comprises a first assembly portion; the first assembly portion comprises: a second cooperation plate provided along the height direction of the low-pressure storage device; a first cooperation plate connected to the top end of the second cooperation plate and located on the side of the second cooperation plate close to the door body; a third cooperation plate connected to the bottom end of the second cooperation plate and located on the side of the second cooperation plate close to the door body; the second mounting portion comprises a second assembly portion; the second assembly portion comprises: a second assembly plate provided along the height direction of the low-pressure storage device; a first assembly plate connected to the top end of the second assembly plate and located on the side of the second assembly plate close to the storage container; a third assembly plate connected to the bottom end of the second assembly plate and located on the side of the second assembly plate away from the storage container; in the height direction of the low-pressure storage device, the third assembly plate is located above the second support plate, and the third assembly plate and the second support plate jointly define an assembly channel extending in the width direction; The first matching plate is matched with the first assembly plate, and the first matching plate is located on the lower side of the first assembly plate; The third matching plate is matched with the third assembly plate, and the third matching plate is located on the lower side of the third assembly plate; The third matching plate is located in the assembly channel defined by the third assembly plate and the second support plate.

4. The refrigeration device according to claim 3, wherein The door body comprises a second limiting portion; the second limiting portion extends along the height direction of the low-pressure storage device, and is used to limit the deformation amount of the door body along the height direction.

5. The refrigeration device according to claim 4, wherein The second limiting portion connects the first limiting portion and the first assembly plate.

6. The cold appliance of claim 3, wherein The second assembly plate has a mounting channel between the adjacent first support plate and / or second support plate; The second matching plate is located on the side of the support groove bottom away from the door body; Along the width direction of the low-pressure storage device, the second matching plate is provided with a first connecting plate close to the end of the support groove bottom; the first connecting plate connects the second matching plate, the support groove bottom adjacent to the second matching plate, and the first support groove wall; The first connecting plate is mounted in the mounting channel.

7. The cold appliance of claim 3, wherein The height of the second matching plate is greater than the height of the support groove bottom; and the first matching plate is located above the first support groove wall; Along the front-rear direction of the low-pressure storage device, the second matching plate is located on the rear side of the support groove bottom.

8. The cold appliance of claim 3, wherein The storage container comprises a storage end plate arranged opposite to the first mounting portion, and a storage bottom plate connected to the bottom end of the storage end plate; The upper surface of the third matching plate, the upper surface of the second support groove wall, and the upper surface of the storage bottom plate are coplanar; The lower surface of the third matching plate, the lower surface of the second support groove wall, and the lower surface of the storage bottom plate are coplanar.

9. A cold appliance, characterized in Comprise: A box body defining a storage chamber; A low-pressure storage device accommodated in the storage chamber; An air extraction device for extracting gas in the low-pressure storage device, so as to form a lower gas pressure in the low-pressure storage device than the atmospheric pressure outside the box body; The low-pressure storage device comprises: A shell having a storage opening; A storage container which can be pulled out or pushed into the shell; the storage container comprises: A first mounting portion which is away from the rear wall of the shell when the storage container is in a pushed-in state; A door body for closing or opening the storage opening; the door body comprises: A transparent portion fixed with the first mounting portion of the storage container; along the height direction of the low-pressure storage device, the maximum height of the first mounting portion is less than the height of the transparent portion; the transparent portion comprises: A second limiting portion extending along the height direction of the low-pressure storage device; A blocking piece located between the bottom plate of the storage container and the bottom plate of the shell, and matched with the bottom plate of the storage container and the bottom plate of the shell.

10. The refrigeration device according to claim 9, wherein Along the height direction of the low-pressure storage device, the maximum height of the first mounting portion is denoted as H1, and the height of the transparent portion is denoted as H2; wherein 0≤H1:H2≤0.3.

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