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 sealing element arranged on one of the shell and the door body. The sealing element comprises a bearing part, two water guide parts and a water collecting part; the bearing part extends in the width direction and is located on the upper side of the storage container. The two water guide parts are connected with the two ends, in the width direction, of the bearing part respectively and extend in the height direction; the water collecting part is connected with the ends, away from the bearing part, of the two water guiding parts. A plane which passes through the midpoint of the water guide part along the height direction and is vertical to the height direction is recorded as P1; in the width direction, the distance between the bearing part and the P1 is firstly increased and then decreased, and the distance between the water collecting part and the P1 is firstly increased and then decreased; according to the arrangement, condensate water on the sealing element is guided and concentrated, collection or cleaning is convenient, and it is avoided that when the door body is opened, the condensate water enters the storage container, and the food material storage state is affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, 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] However, when food in the internal space of the vacuum storage device is taken out or placed, condensate water is easily formed at the storage opening which is opened or closed by the door body of the vacuum storage device; when the door body opens the storage opening, the condensate water is easily flowed into the internal space of the vacuum storage device, resulting in water in the internal space of the vacuum storage device, which affects the internal storage environment of the vacuum storage device and thus affects the storage state of the food in the internal space of the vacuum storage device. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a refrigeration device, a sealing element of a low-pressure storage device of the refrigeration device is provided with a plurality of flow guide portions with different extension trends to guide and concentrate the condensate water thereon, so as to facilitate collection or cleaning, thereby avoiding the condensate water from entering the storage container when the door body is opened to affect the storage state of the food.

[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 housing having a storage opening;

[0011] a storage container which can be pulled out of or pushed into the housing through the storage opening;

[0012] a door body located on a side of the storage container away from a rear wall of the housing, for opening or closing the storage opening;

[0013] a sealing element arranged on one of the housing and the door body; when the storage container is in a pushed-in state, the sealing element is in abutment with the other one of the housing and the door body; the sealing element comprises:

[0014] The receiving portion is located on the upper side of the storage container and is used to collect the condensed water above the receiving portion;

[0015] The two water guide portions are respectively connected to the two ends of the receiving portion along the width direction of the low-pressure storage device and are used to guide the condensed water collected by the receiving portion downward;

[0016] The water collecting portion is connected to the end of the two water guide portions away from the receiving portion;

[0017] The plane passing through the midpoint of the water guide portion along the height direction and perpendicular to the height direction of the low-pressure storage device is defined as the first reference plane P1;

[0018] The distance between the receiving portion and the first reference plane P1 along the width direction of the low-pressure storage device first increases and then decreases, so as to guide the condensed water collected by the receiving portion to the two water guide portions;

[0019] The distance between the water collecting portion and the first reference plane P1 along the width direction of the low-pressure storage device first increases and then decreases, so as to guide the condensed water guided by the two water guide portions to the middle region of the water collecting portion along the width direction of the low-pressure storage device.

[0020] In the above technical solution, the extension trends of the receiving portion, the water guide portion, and the water collecting portion on the sealing element are matched with each other, so as to guide and concentrate the condensed water on the sealing element, facilitate collection or cleaning, and avoid the condensed water from entering the storage container when the door body is opened to affect the storage state of the food materials.

[0021] In some embodiments, the maximum point of the distance between the receiving portion and the first reference plane P1 is defined as the first convex point A1;

[0022] The end of the receiving portion connected to one of the water guide portions is defined as the first connection end, and the end connected to the other water guide portion is defined as the second connection end;

[0023] The distance between the first convex point A1 and the first connection end along the width direction of the low-pressure storage device is defined as D 11 , and the distance between the first convex point A1 and the second connection end is defined as D 12 ;

[0024] 0.8≤D 11 :D 12 ≤1.2.

[0025] In the above technical solution, when D 11 :D 12When <0.8, the maximum water flow path length from the first convex point A1 to the second sealing portion ( / the flow guide portion on the second sealing portion) is less than the maximum water flow path length from the first convex point A1 to the fourth sealing portion ( / the flow guide portion on the fourth sealing portion), the water amount shunted to the second sealing portion ( / the flow guide portion on the second sealing portion) from the first sealing portion ( / the flow guide portion on the first sealing portion) is less than the water amount shunted to the fourth sealing portion ( / the flow guide portion on the fourth sealing portion), which causes the water amount shunted to the fourth sealing portion ( / the flow guide portion on the fourth sealing portion) to exceed the flow capacity that the fourth sealing portion ( / the flow guide portion on the fourth sealing portion) can bear, resulting in the fourth sealing portion ( / the flow guide portion on the fourth sealing portion) being unable to effectively guide the flow.

[0026] When 1.2 11 : D 12 , the maximum water flow path length from the first convex point A1 to the second sealing portion ( / the flow guide portion on the second sealing portion) is greater than the maximum water flow path length from the first convex point A1 to the fourth sealing portion ( / the flow guide portion on the fourth sealing portion), the water amount shunted to the second sealing portion ( / the flow guide portion on the second sealing portion) from the first sealing portion ( / the flow guide portion on the first sealing portion) is greater than the water amount shunted to the fourth sealing portion ( / the flow guide portion on the fourth sealing portion), which causes the water amount shunted to the second sealing portion ( / the flow guide portion on the second sealing portion) to exceed the flow capacity that the second sealing portion ( / the flow guide portion on the second sealing portion) can bear, resulting in the second sealing portion ( / the flow guide portion on the second sealing portion) being unable to effectively guide the flow.

[0027] In this application, 0.8 11 : D 12 ≤1.2, which makes the maximum water flow path length from the first convex point A1 to the second sealing portion ( / the flow guide portion on the second sealing portion) similar to the maximum water flow path length from the first convex point A1 to the fourth sealing portion ( / the flow guide portion on the fourth sealing portion), the water amount shunted to the second sealing portion ( / the flow guide portion on the second sealing portion) from the first sealing portion ( / the flow guide portion on the first sealing portion) is similar to the water amount shunted to the fourth sealing portion ( / the flow guide portion on the fourth sealing portion), so as to more evenly guide the flow downward by the second sealing portion ( / the flow guide portion on the second sealing portion) or the fourth sealing portion ( / the flow guide portion on the fourth sealing portion), and ensure that the second sealing portion ( / the flow guide portion on the second sealing portion) or the fourth sealing portion ( / the flow guide portion on the fourth sealing portion) can effectively guide the flow.

[0028] In some embodiments, the receiving portion includes a first fitting portion and a first fitting portion distributed along the front-rear direction of the low-pressure storage device and extending along the width direction of the low-pressure storage device;

[0029] The first matching part is provided with a plurality of first positive supporting parts near one side of the first fitting part; wherein the plurality of first positive supporting parts are distributed at intervals along the width direction of the low-pressure storage device;

[0030] The first fitting part is provided with a first negative supporting part consistent with the extension direction of the first fitting part near one side of the first matching part;

[0031] When the door body is closed, the door body and the shell jointly extrude the receiving part, and the first positive supporting part cooperates with the first negative supporting part.

[0032] In the above technical solution, the first positive supporting part cooperates with the first negative supporting part, so that the first fitting part and the first matching part have mutual supporting effect, which can ensure effective sealing. In addition, the first positive supporting part and the first negative supporting part support each other, so that the two adjacent side walls of the first fitting part and the first matching part are separated, so that the condensed water can smoothly enter the receiving part (receiving groove) through the gap between the two adjacent first positive supporting parts, and the receiving part (receiving groove) can effectively collect water; and the extrusion force on the sealing element is avoided to be too large, so that the first fitting part and the first matching part are completely close to each other, and the receiving part cannot receive the condensed water on the upper part of the sealing element.

[0033] In some embodiments, the receiving part has an upward opening and a water receiving bottom wall opposite to the opening;

[0034] In the direction from the plane where the opening of the receiving part is located to the water receiving bottom wall, the cross-sectional area of the first positive supporting part perpendicular to the direction gradually decreases.

[0035] In the above technical solution, the above setting makes the receiving part (receiving groove) have a large enough space to receive condensed water away from the opening end. On the other hand, the above setting makes the first positive supporting part and the first matching part transitionally connected, and the connection strength is better.

[0036] In some embodiments, in the direction from the plane where the opening of the receiving part is located to the water receiving bottom wall, the distance between the two adjacent first positive supporting parts gradually increases.

[0037] In the above technical solution, the above setting makes the water entering the receiving part (receiving groove) flow quickly to the water receiving bottom wall of the receiving part. In addition, the above setting makes the receiving part (receiving groove) have a large enough space to receive condensed water away from the opening end.

[0038] In some embodiments, in the direction from the plane where the opening of the receiving part is located to the water receiving bottom wall, the maximum distance between the plane where the opening of the receiving part is located and the water receiving bottom wall is denoted as L 11; the first positive support portion extends in a direction pointing to the water receiving bottom wall from a plane where the opening of the receiving portion is located, and a length of the first positive support portion in the direction is denoted as L 12 ; wherein 0.4≤L 12 11 ≤0.8.

[0039] In the above technical solution, when L 12 11 <0.4, the length of the first positive support portion in the depth direction of the receiving portion (in the direction pointing to the water receiving bottom wall from the plane where the opening of the receiving portion is located) is too small, the length of the first positive support portion for interaction with the first negative support portion is too small, which is likely to cause the first positive support portion and the first negative support portion to be misaligned, so that the adjacent side walls of the first fitting portion and the first fitting portion are fitted or the first negative support portion and the first fitting portion are fitted, thereby failing to effectively collect water. On the other hand, the fitting of the adjacent side walls of the first fitting portion and the first fitting portion is likely to cause adhesion between them.

[0040] When 0.8 12 11 , the length of the first positive support portion in the depth direction of the receiving portion (in the direction pointing to the water receiving bottom wall from the plane where the opening of the receiving portion is located) is too large, the first positive support portion occupies a large internal space of the receiving portion, and the maximum water collection volume of the receiving portion is reduced; when the amount of water is too large, the excess condensed water cannot be effectively collected by the receiving portion and then guided downward by the second sealing portion or the fourth sealing portion.

[0041] In this application, the setting of 0.4≤L 12 11 ; on the other hand, ensures that the receiving portion has sufficient water collection space to effectively collect condensed water.

[0042] In some embodiments, the maximum distance point between the water collecting portion and the first reference surface P1 is denoted as a third convex point A3;

[0043] The end portion of the receiving portion connected to one of the water guiding portions is denoted as a first adapter end, and the end portion connected to the other water guiding portion is denoted as a second adapter end;

[0044] In the width direction of the low-pressure storage device, the distance between the third convex point A3 and the first adapter end is denoted as D 31 ; and the distance between the third convex point A3 and the second adapter end is denoted as D 32 ;

[0045] ​​​​wherein 0.8≤D 31 : D 32 ≤1.2.

[0046] In the above technical solution, when D 31 : D 32 <0.8, the maximum water flow path length from the third protrusion A3 to the second sealing portion ( / the flow guide portion on the second sealing portion) is excessively larger than the maximum water flow path length from the third protrusion A3 to the fourth sealing portion ( / the flow guide portion on the fourth sealing portion), the amount of water flowing downward by the second sealing portion ( / the flow guide portion on the second sealing portion) is smaller than the amount of water flowing downward by the fourth sealing portion ( / the flow guide portion on the fourth sealing portion), and it is easy to cause part of the water flowing downward by the fourth sealing portion ( / the flow guide portion on the fourth sealing portion) along the third sealing portion ( / the flow guide portion on the third sealing portion) to separate from the third sealing portion ( / the flow guide portion on the third sealing portion), which is inconvenient for centralized cleaning.

[0047] When 1.2 31 : D 32 , the maximum water flow path length from the third protrusion A3 to the second sealing portion ( / the flow guide portion on the second sealing portion) is excessively larger than the maximum water flow path length from the third protrusion A3 to the fourth sealing portion ( / the flow guide portion on the fourth sealing portion), the amount of water flowing downward by the second sealing portion ( / the flow guide portion on the second sealing portion) is larger than the amount of water flowing downward by the fourth sealing portion ( / the flow guide portion on the fourth sealing portion), and it is easy to cause part of the water flowing downward by the second sealing portion ( / the flow guide portion on the second sealing portion) along the third sealing portion ( / the flow guide portion on the third sealing portion) to separate from the third sealing portion ( / the flow guide portion on the third sealing portion), which is inconvenient for centralized cleaning.

[0048] In the present application, the setting of 0.8≤D 31 : D 32 ≤1.2 makes the maximum water flow path length from the third protrusion A3 to the second sealing portion ( / the flow guide portion on the second sealing portion) similar to the maximum water flow path length from the third protrusion A3 to the fourth sealing portion ( / the flow guide portion on the fourth sealing portion), so as to more evenly make the water flowing downward by the second sealing portion ( / the flow guide portion on the second sealing portion) or the fourth sealing portion ( / the flow guide portion on the fourth sealing portion) flow along the third sealing portion ( / the flow guide portion on the third sealing portion); on the other hand, it can avoid that one side path is too long to cause water to separate from the third sealing portion ( / the flow guide portion on the third sealing portion) without being guided to the third protrusion portion 0, which is inconvenient for centralized cleaning.

[0049] In some embodiments, the water collecting portion includes a third matching portion and a third fitting portion distributed in the front-rear direction of the low-pressure storage device and extending in the width direction of the low-pressure storage device;

[0050] The third matching part is provided with a plurality of third positive supporting parts on one side close to the third fitting part; wherein the plurality of third positive supporting parts are distributed at intervals along the width direction of the low-pressure storage device;

[0051] The third fitting part is provided with a third negative supporting part on one side close to the third matching part, which is consistent with the extension direction of the third fitting part;

[0052] When the door body is closed, the door body and the shell jointly extrude the receiving part, and the third positive supporting part cooperates with the third negative supporting part.

[0053] In the above technical solution, the third positive supporting part and the first negative supporting part support each other, so that the two adjacent side walls of the third fitting part and the third matching part are separated; the third positive supporting part, the third negative supporting part, the third fitting part, the third matching part, and the water collecting bottom wall jointly define a water collecting channel. The downwardly flowing condensate water from the second sealing part and / or the fourth sealing part enters the water collecting channel. In addition, the plurality of third positive supporting parts arranged at intervals cooperate with the third negative supporting parts, so that the third negative supporting parts interact with the third positive supporting parts at intervals, which can effectively prevent the two from adhering to each other.

[0054] In some embodiments, the water collecting part has a downward opening and a water collecting bottom wall arranged opposite to the opening;

[0055] In the direction from the plane where the opening of the water collecting part is located to the water collecting bottom wall, the interval between the two adjacent third positive supporting parts gradually increases.

[0056] In the above technical solution, the above arrangement makes the water collecting part (water collecting groove) have a large enough space to receive condensate water away from the opening end; in addition, it reduces the condensate water entering the water collecting channel from flowing out along the width direction through the gap between the two adjacent third positive supporting parts during the process of flowing along the width direction, thereby improving the efficiency of the water collecting part in guiding the flow along the width direction.

[0057] In a second aspect, a refrigeration device is provided, comprising:

[0058] A cabinet body defines a storage chamber;

[0059] A low-pressure storage device is accommodated in the storage chamber;

[0060] An air extraction device is used to extract air in the low-pressure storage device, so as to form a lower air pressure in the low-pressure storage device than the atmospheric pressure outside the cabinet body;

[0061] The low-pressure storage device comprises:

[0062] A shell has a storage opening;

[0063] A storage container can be pulled out or pushed into the shell;

[0064] a door body located on the side of the storage container away from the rear wall of the shell, for opening or closing the storage opening;

[0065] a sealing element provided on one of the shell and the door body; when the storage container is in the pushed-in state, the sealing element is in contact with the other of the shell and the door body, and surrounds the storage opening and a center of the sealing element O; the sealing element comprises:

[0066] a first sealing portion located above the storage container and extending in the width direction of the low-pressure storage device; the first sealing portion protrudes away from the center O;

[0067] a third sealing portion located below the storage container and extending in the width direction of the low-pressure storage device; the third sealing portion protrudes away from the center O;

[0068] a second sealing portion connecting the same end of the first sealing portion and the third sealing portion in the width direction of the low-pressure storage device;

[0069] a fourth sealing portion connecting the other end of the first sealing portion and the third sealing portion in the width direction of the low-pressure storage device;

[0070] a flow guide portion formed on the first sealing portion, the second sealing portion, the third sealing portion and the fourth sealing portion; the extension trend of the flow guide portion is consistent with the extension trend of the sealing portion where the flow guide portion is located, for guiding the condensed water on the sealing portion.

[0071] In the above technical solution, the extension trends of the sealing portions of the sealing element are matched with each other to guide and concentrate the condensed water on the sealing element, facilitating collection or cleaning, so as to avoid the condensed water from entering the storage container when the door body is opened to affect the storage state of the food materials. BRIEF DESCRIPTION OF DRAWINGS

[0072] Figure 1 a schematic diagram of the overall structure of the refrigeration device according to some embodiments is shown;

[0073] Figure 2 a schematic diagram of the overall structure of the low-pressure storage device in the closed state according to some embodiments is shown;

[0074] Figure 3 a schematic diagram of the overall structure of the low-pressure storage device in the open state according to some embodiments is shown;

[0075] Figure 4 a schematic diagram of the overall structure of the low-pressure storage device in the open state according to some embodiments is shown from another perspective;

[0076] Figure 5 Fig. 1 shows an exploded structural view of a drawer unit according to some embodiments;

[0077] Figure 6 Fig. 2 shows another exploded structural view of a drawer unit according to some embodiments;

[0078] Figure 7 Fig. 3 shows an exploded structural view of a door body and a sealing element according to some embodiments;

[0079] Figure 8 Fig. 4 shows a structural view of a sealing element according to some embodiments;

[0080] Figure 9 Fig. 5 shows a partial structural view of a first sealing portion and a second sealing portion of a sealing element according to some embodiments;

[0081] Figure 10 Fig. 6 shows a partial structural view of a third sealing portion and a fourth sealing portion of a sealing element according to some embodiments;

[0082] Figure 11 Fig. 7 shows a cross-sectional view of a sealing element according to some embodiments;

[0083] Figure 12 Fig. 8 shows another cross-sectional view of a sealing element according to some embodiments;

[0084] Figure 13 Fig. 9 shows a relative position view of a door body, a locking assembly and a pressure relief assembly according to some embodiments;

[0085] Figure 14 Fig. 10 shows another relative position view of a door body, a locking assembly and a pressure relief assembly according to some embodiments;

[0086] Figure 15 Fig. 11 shows an exploded structural view of a door body, a locking assembly and a pressure relief assembly according to some embodiments;

[0087] Figure 16 Fig. 12 shows a structural view of a pressure relief fixing portion according to some embodiments;

[0088] Figure 17 Fig. 13 shows another structural view of a pressure relief fixing portion according to some embodiments;

[0089] Figure 18 Fig. 14 shows a structural view of a transmission connecting portion according to some embodiments;

[0090] Figure 19Exemplary shows an assembly structure diagram of the pressure relief fixing part and the transmission connecting part according to some embodiments;

[0091] Figure 20 Exemplary shows a projection view of the second locking part and the transmission connecting part in a plane perpendicular to the rotation axis of the pressure relief fixing part according to some embodiments;

[0092] Figure 21 Exemplary shows a cross-sectional view of the door body, the locking assembly and the pressure relief assembly according to some embodiments;

[0093] Figure 22 Exemplary shows a structure diagram of the low-pressure storage device according to some embodiments;

[0094] Figure 23 Exemplary shows a structure diagram of the low-pressure storage device from another perspective; Figure 22 Exemplary shows a structure diagram of the low-pressure storage device from another perspective;

[0095] Figure 24 Exemplary shows a structure diagram of the storage container according to some embodiments;

[0096] Figure 25 Exemplary shows a structure diagram of the storage container from another perspective according to some embodiments;

[0097] Figure 26 Exemplary shows a cross-sectional view of the storage container according to some embodiments;

[0098] Figure 27 Exemplary shows another cross-sectional view of the storage container according to some embodiments;

[0099] Figure 28 Exemplary shows a partial cross-sectional view of the drawer unit according to some embodiments;

[0100] Figure 29 Exemplary shows another partial cross-sectional view of the drawer unit according to some embodiments;

[0101] Figure 30 Exemplary shows another partial cross-sectional view of the drawer unit according to some embodiments;

[0102] Figure 31 Exemplary shows a cross-sectional view of the low-pressure storage device according to some embodiments.

[0103] The refrigerator 100; the cabinet 101; the cabinet door 102; the low-pressure storage device 1; the air hole 10; the pressure relief hole 11; the shell 2; the storage room 20; the storage port 21; the storage container 3; the storage bottom plate 30; the first storage side plate 31; the second storage side plate 32; the storage end plate 33; the first mounting part 34; the first support part 341; the support groove bottom 3410; the first support groove wall 3411; the second support groove wall 3412; the first connecting piece 3413; the first assembly part 342; the first matching plate 3421; the second matching plate 3422; the third matching plate 3423; the first connecting plate 3424; the second connecting piece 3425; the door body 4; the transparent part 40; the shielding part 41; the first shielding piece 42; the locking connecting piece 43; the second shielding piece 44; the containing part 45; the second mounting part 46; the second support part 461; the first support plate 4611; the second support plate 4612; the second assembly part 462; the first assembly plate 4621; the second assembly plate 4622; the third assembly plate 4623; the fourth assembly plate 4624; the first limiting part 47; the second limiting part 48; the spacing channel 49; the first fixing part 491; the second fixing part 492; the third fixing part 493; the locking assembly 5; the first locking part 51; the locking matching part 510; the locking wall 511; the guide wall 512; the second locking part 52; the locking plate 520; the first locking plate strip 5201; the second locking plate strip 5202; the third locking plate strip 5203; the fourth locking plate strip 5204; the lock block 521; the handle 53; the pressure relief assembly 6; the pressure relief piece 60; the elastic piece 61; the torsional spring main body part 610; the first torsional arm 611; the second torsional arm 612; the first branch arm 6121; the second branch arm 6122; the pressure relief fixing part 62; the rotating column 620; the first pressure relief plate 621; the second pressure relief plate 622; the reinforcing part 623; the transmission connecting part 63; the first transmission part 631; the transmission plate 6310; the first transmission plate strip 63101; the second transmission plate strip 63102; the third transmission plate strip 63103; the fourth transmission plate strip 63104; the second transmission part 632; the sealing element 7; the centroid O; the first sealing part 71; the first protruding part 710; the first protruding point A1; the first matching part 711; the first abutting part 712; the first positive support part 713; the first negative support part 714; the receiving part 715; the first connecting part 716; the second sealing part 72; the second midpoint I2; the second matching part 721; the second abutting part 722; the second positive support part 723; the second negative support part 724; the water guide part 725; the second connecting part 726; the third sealing part 73; the third protruding part 730; the third protruding point A3; the third matching part 731; the third abutting part 732; the third positive support part 733; the third negative support part 734; the water collecting part 735; the third connecting part 736; the fourth sealing part 74; the fourth midpoint I4; the blocking piece 8. DETAILED DESCRIPTION

[0104] In order to make the purposes and embodiments of the present application clearer, the following will clearly and completely describe the exemplary embodiments of the present application with reference to the accompanying drawings of the exemplary embodiments. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments.

[0105] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the subsequently described embodiments, and is not intended to limit the embodiments of the present application. Unless otherwise specified, these terms should be understood according to their ordinary and general meanings.

[0106] The terms "first", "second", "third", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar or identical objects or entities, and do not necessarily mean a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchanged under appropriate circumstances.

[0107] The terms "include" and "have" and any variations thereof are intended to cover but not exclusive inclusion, for example, a product or device including a series of components does not have to be limited to all the components clearly listed, but can include other components not clearly listed or inherent to these products or devices.

[0108] The refrigeration device provided by the embodiments of the present application can have various implementation forms, for example, can be a refrigerator, a wine cabinet, or the like, which has a refrigeration function. The embodiments of the present application take the refrigerator as an example for description.

[0109] 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 to open and close the storage compartment, and a refrigeration device for supplying cold air to the storage compartment. The cabinet 101 includes an inner container defining the storage compartment, an outer shell connected to the outer side of the inner container to form the appearance of the refrigerator 100, and a heat insulation layer provided between the inner container and the outer shell to thermally insulate the storage compartment.

[0110] The refrigerator 100 includes a plurality of storage compartments to store items respectively. In some embodiments of the present application, the plurality of storage compartments include a refrigerating compartment and a freezing compartment. In some embodiments of the present application, the refrigerating compartment is located above or below the freezing compartment, or the refrigerating compartment and the freezing compartment are arranged side by side along the width direction of the cabinet 101. It should be noted that the arrangement of the plurality of storage compartments of the refrigerator 100 is not limited to the above example.

[0111] In some embodiments of the present application, the front end of the storage compartment is formed with a taking and placing opening to place the storage items into the storage compartment or take the storage items out of the storage compartment through the taking and placing opening. The door 102 is connected to the cabinet 101 to open or close the taking and placing opening of the storage compartment.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] The storage container 3 has an open storage port, and a storage bottom plate 30 arranged opposite to the storage port. A direction perpendicular to the storage bottom plate 30 is defined as a height direction of the low-pressure storage device 1. In some embodiments of the present application, the storage bottom plate 30 is located below a plane in which the storage port is located.

[0122] A direction orthogonal to the front-rear direction and the height direction is defined as a width direction of the low-pressure storage device 1. It should be noted that in the description of the directions, the shell 2, the storage container 3, and the door body 4 are consistent with the above directions of the low-pressure storage device.

[0123] A direction along the shell rear wall and pointing to the plane in which the storage port 21 is located is defined as a first moving direction; a direction along the plane in which the storage port 21 is located and pointing to the shell rear wall is defined as a second moving direction. The first moving direction is opposite to the second moving direction, and the drawer unit can move along the first moving direction or the second moving direction.

[0124] When the storage port 21 of the storage chamber 20 is closed by the door body 4 and the air extraction device is started, the gas in 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 an embodiment of the present application, at the end of the air extraction process, the pressure in the storage chamber 20 is lower than one standard atmosphere or between one standard atmosphere and absolute vacuum. Since the air pressure in the storage chamber 20 is lower than one standard atmosphere, it is also commonly referred to as a “vacuum chamber” by those skilled in the art.

[0125] In some embodiments of the present application, a sealing element 7 can be arranged on the door body 4. When the door body 4 is in the closed position, the door body 4 and the shell 2 press the sealing element 7 together, so that the door body 4 and the shell 2 form an airtight joint when the door body 4 is in the closed position, i.e. the sealing element 7 is used to seal the joint between the door body 4 and the shell 2 when the door body 4 is closed, preventing gas from entering the storage chamber (the storage chamber is in a normal pressure state when the air extraction device is not extracting air, or in a low pressure state after the air extraction device extracts air) between the shell 2 and the door body 4.

[0126] In some embodiments of the present application, the sealing element 7 can also be arranged at the front end of the shell 2, for example, connected to the end wall of the shell 2 surrounding the storage port 21. When the door body 4 closes the storage port 21, the door body 4 and the shell 2 are sealed together by the sealing element 7, and the storage chamber 20 of the shell 2 forms a closed storage space.

[0127] In some embodiments of the present application, the sealing element 7 is annular. The sealing element 7 is arranged around the storage port 21 to effectively seal the door body 4 and the shell 2.

[0128] In some embodiments of the present application, the sealing element 7 is a compressible seal.

[0129] The sealing element 7 has a deformable length along the moving direction (first moving direction or second moving direction) of the storage container 3 being pushed into or pulled out of the housing 2. When the door body 4 closes the storage opening 21, the sealing element 7 is compressed under the joint pressing of the door body 4 and the housing 2, so that the door body 4 and the housing 2 are sealedly matched. When the door body 4 is opened, the door body 4 and the housing 2 are separated, the pressure applied to the sealing element 7 is removed, and the sealing element 7 returns to the natural state.

[0130] In some embodiments of the present application, the sealing element 7 is a rubber sealing element.

[0131] In some embodiments of the present application, as shown in Figures 5-7 , the sealing element 7 is arranged on the door body 4, which is annular and surrounds the storage container 3, so as to be sealed around the storage opening 21 when the door body 4 and the housing 2 are closed and matched.

[0132] In some embodiments of the present application, as shown in Figures 8-12 , the sealing element 7 includes a first sealing portion 71, a second sealing portion 72, a third sealing portion 73 and a fourth sealing portion 74 connected in sequence.

[0133] Among them, 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.

[0134] 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.

[0135] In some embodiments of the present application, referring to Figure 8 , the center of the annular sealing element 7 is surrounded by the sealing element 7.

[0136] In some embodiments of the present application, the sealing element 7 includes a flow guide portion 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 (the first sealing portion 71 or the second sealing portion 72 or the third sealing portion 73 or the fourth sealing portion 74) where the flow guide portion is located can guide the condensed water located thereon.

[0137] In some embodiments of the present application, the extension trend of the flow guide portion is consistent with the extension trend of the sealing portion (the first sealing portion 71 or the second sealing portion 72 or the third sealing portion 73 or the fourth sealing portion 74) where the flow guide portion is located.

[0138] In some embodiments of the present application, the first sealing portion 71 ( / the flow guide portion on the first sealing portion 71) is located above the centroid O. The first sealing portion 71 ( / the flow guide portion on the first sealing portion 71) protrudes to the side away from the centroid O, and a first protruding portion 710 is formed at the middle of the first sealing portion 71 ( / the flow guide portion on the first sealing portion 71) in the width direction. In the above, the arrangement of the first sealing portion 71 ( / the flow guide portion on the first sealing portion 71) causes the water on the first sealing portion 71 ( / the flow guide portion on the first sealing portion 71) to flow to both sides of the first protruding portion 710 in the width direction, and the water on the first sealing portion 71 ( / the flow guide portion on the first sealing portion 71) is guided 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 flow guide portion on the second sealing portion 72 and the fourth sealing portion 74), the water at the upper end of the sealing element 7 can be guided to the lower end of the sealing element 7.

[0139] In some embodiments of the present application, the third sealing portion 73 ( / the flow guide portion on the third sealing portion 73) is located below the centroid O. The third sealing portion 73 ( / the flow guide portion on the third sealing portion 73) protrudes to the side away from the centroid O, and a third protruding portion 730 is formed at the middle of the third sealing portion 73 ( / the flow guide portion on the third sealing portion 73) in the width direction. In the above, the arrangement of the third sealing portion 73 ( / the flow guide portion on the third sealing portion 73) causes the water guided downward by the second sealing portion 72 and / or the fourth sealing portion 74 ( / the flow guide portion on the second sealing portion 72 and the fourth sealing portion 74) to flow along the third sealing portion 73 ( / the flow guide portion on the third sealing portion 73); it is convenient to guide the water to the third protruding portion 730 to facilitate the collection or cleaning of the water, so as to avoid the condensed water from entering the storage container 3 when the door body 4 is opened to affect the storage state of the food materials.

[0140] In some embodiments of the present application, the second sealing portion 72 ( / the flow guide portion on the second sealing portion 72) extends linearly in the height direction. The fourth sealing portion 74 ( / the flow guide portion on the fourth sealing portion 74) extends linearly in the height direction.

[0141] In some embodiments of the present application, the midpoint of the second sealing portion 72 ( / the flow guide portion on the second sealing portion 72) in the height direction is denoted as the second midpoint I2; and the midpoint of the fourth sealing portion 74 ( / the flow guide portion on the fourth sealing portion 74) in the height direction is denoted as the fourth midpoint I4.

[0142] 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.

[0143] In some embodiments of the present application, the straight line on which the second midpoint I2 and the fourth midpoint I4 are located is consistent with the width direction.

[0144] In some embodiments of the present application, the first sealing portion 71 (or the flow 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 (or the flow guide portion on the first sealing portion 71) is connected to the second sealing portion 72 (or the flow guide portion on the second sealing portion 72), and the second connecting end of the first sealing portion 71 (or the flow guide portion on the first sealing portion 71) is connected to the fourth sealing portion 74 (or the flow guide portion on the fourth sealing portion 74).

[0145] In the direction from the first connecting end to the second connecting end, the distance between the first sealing portion 71 (or the flow guide portion on the first sealing portion 71) and the first reference surface P1 first increases and then decreases.

[0146] The first sealing portion 71 (or the flow guide portion on the first sealing portion 71) forms a first protruding portion 710 at the position where the distance to the first reference surface P1 is the largest. Water on the first sealing portion 71 (or the flow guide portion on the first sealing portion 71) can flow from the first protruding portion 710 to the first connecting end and the second connecting end on the opposite sides of the first protruding portion 710 under the action of gravity, and then flow to the second sealing portion 72 (or the flow guide portion on the second sealing portion 72) through the first connecting end and to the fourth sealing portion 74 (or the flow guide portion on the fourth sealing portion 74) through the second connecting end.

[0147] In some embodiments of the present application, the first protruding portion 710 is located at the midpoint of the first sealing portion 71 (or the flow guide portion on the first sealing portion 71) along the width direction. The above arrangement makes the water flow path length from the first protruding portion 710 to the second sealing portion 72 (or the flow guide portion on the second sealing portion 72) equal to the water flow path length from the first protruding portion 710 to the fourth sealing portion 74 (or the flow guide portion on the fourth sealing portion 74), so as to more evenly distribute the water on the first sealing portion 71 (or the flow guide portion on the first sealing portion 71) to the second sealing portion 72 (or the flow guide portion on the second sealing portion 72) and the fourth sealing portion 74 (or the flow guide portion on the fourth sealing portion 74), and then guide the water downward through the second sealing portion 72 (or the flow guide portion on the second sealing portion 72) or the fourth sealing portion 74 (or the flow guide portion on the fourth sealing portion 74). On the other hand, it can avoid the situation that the water flow path on one side is too long, causing the water flow to be too large to be effectively guided by the second sealing portion 72 (or the flow guide portion on the second sealing portion 72) or the fourth sealing portion 74 (or the flow guide portion on the fourth sealing portion 74) on the corresponding side.

[0148] In some embodiments of the present application, the maximum distance between the first protruding portion 710 and the first reference surface P1 is denoted as a first protruding point A1.

[0149] It is to be noted that the first sealing portion 71 (the flow guide portion on the first sealing portion 71) has a dimension in the height direction greater than 0, and the point farthest from the first reference surface PI on the surface of the first sealing portion 71 (the flow guide portion on the first sealing portion 71) away from the center of mass O of the sealing element 7 is the point farthest from the first reference surface PI.

[0150] In 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 protrusion A1 and the second connecting end is denoted as D 12 ; in some embodiments of the present application, 0.8≤D 11 : D 12 ≤1.2.

[0151] When D 11 : D 12 <0.8, the maximum water flow path length from the first protrusion A1 to the second sealing portion 72 (the flow guide portion on the second sealing portion 72) is excessively greater than the maximum water flow path length from the first protrusion A1 to the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74), the amount of water shunted to the second sealing portion 72 (the flow guide portion on the second sealing portion 72) from the first sealing portion 71 (the flow guide portion on the first sealing portion 71) is less than the amount of water shunted to the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74), which causes the amount of water shunted to the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74) to exceed the carrying capacity of the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74), resulting in the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74) being unable to effectively guide water flow.

[0152] When 1.2<D 11 : D 12 , the maximum water flow path length from the first protrusion A1 to the second sealing portion 72 (the flow guide portion on the second sealing portion 72) is excessively greater than the maximum water flow path length from the first protrusion A1 to the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74), the amount of water shunted to the second sealing portion 72 (the flow guide portion on the second sealing portion 72) from the first sealing portion 71 (the flow guide portion on the first sealing portion 71) is greater than the amount of water shunted to the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74), which causes the amount of water shunted to the second sealing portion 72 (the flow guide portion on the second sealing portion 72) to exceed the carrying capacity of the second sealing portion 72 (the flow guide portion on the second sealing portion 72), resulting in the second sealing portion 72 (the flow guide portion on the second sealing portion 72) being unable to effectively guide water flow.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] In some embodiments of the present application, D 11 = D 12 The above arrangement makes the maximum water flow path length from the first convex point A1 to the second sealing portion 72 (the flow guide portion on the second sealing portion 72) equal to the maximum water flow path length from the first convex point A1 to the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74), so as to more evenly distribute the water on the first sealing portion 71 (the flow guide portion on the first sealing portion 71) to the second sealing portion 72 (the flow guide portion on the second sealing portion 72) or the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74), and then downwardly guide the water through the second sealing portion 72 (the flow guide portion on the second sealing portion 72) or the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74). On the other hand, it can avoid the situation that the water flow on one side is too large due to the excessively long path on that side, so that the water flow cannot be effectively guided through the second sealing portion 72 (the flow guide portion on the second sealing portion 72) or the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74) on the corresponding side.

[0157] In some embodiments of the present application, the third sealing portion 73 (the flow 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 flow guide portion on the third sealing portion 73) is connected to the second sealing portion 72 (the flow guide portion on the second sealing portion 72), and the second transition end of the third sealing portion 73 (the flow guide portion on the third sealing portion 73) is connected to the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74).

[0158] In the direction from the first transition end to the second transition end, the distance between the third sealing portion 73 (the flow guide portion on the third sealing portion 73) and the first reference surface P1 first increases and then decreases.

[0159] The maximum distance between the third sealing portion 73 (the flow guide portion on the third sealing portion 73) and the first reference surface P1 forms a third convex portion 730. The water guided by the second sealing portion 72 (the flow guide portion on the second sealing portion 72) flows along the third sealing portion 73 (the flow guide portion on the third sealing portion 73) after being diverted through the first transition end, and is guided by the third sealing portion 73 (the flow guide portion on the third sealing portion 73) to the third convex portion 730. In addition, the water guided by the fourth sealing portion 74 (the flow guide portion on the fourth sealing portion 74) flows along the third sealing portion 73 (the flow guide portion on the third sealing portion 73) after being diverted through the second transition end, and is guided by the third sealing portion 73 (the flow guide portion on the third sealing portion 73) to the third convex portion 730, so as to facilitate collection or cleaning, so as to avoid the situation that the condensed water enters the storage container 3 when the door body 4 is opened, affecting the storage state of the food materials.

[0160] The water on the first sealing part 71 (the flow guide part on the first sealing part 71), the second sealing part 72 (the flow guide part on the second sealing part 72), and the fourth sealing part 74 (the flow guide part on the fourth sealing part 74) of the sealing element 7 can be concentrated at the third protruding part 730 by the flow guide effect of the third sealing part 73 (the flow guide part on the third sealing part 73), which facilitates collection or cleaning to avoid the condensed water from entering the storage container 3 when the door body 4 is opened to affect the preservation state of the food materials.

[0161] In some embodiments of the present application, the third protruding part 730 is located at the midpoint of the third sealing part 73 (the flow guide part on the third sealing part 73) in the width direction. The above arrangement makes the water flow path length from the second sealing part 72 (the flow guide part on the second sealing part 72) to the third protruding part 730 equal to the water flow path length from the fourth sealing part 74 (the flow guide part on the fourth sealing part 74) to the third protruding part 730, so as to more evenly make the water flowing downward from the second sealing part 72 (the flow guide part on the second sealing part 72) or the fourth sealing part 74 (the flow guide part on the fourth sealing part 74) flow along the third sealing part 73 (the flow guide part on the third sealing part 73); on the other hand, it can avoid that the water is not guided to the third protruding part 730 but escapes from the third sealing part 73 due to the too long path on one side, which is not convenient for centralized cleaning.

[0162] In some embodiments of the present application, the maximum point of the distance between the third protruding part 730 and the first reference surface P1 is referred to as the third protruding point A3.

[0163] It should be noted that the dimension of the third sealing part 73 (the flow guide part on the third sealing part 73) in the height direction is greater than 0, and the maximum point of the distance between the third protruding part 730 and the first reference surface P1 is the point on the surface of the third sealing part 73 (the flow guide part on the third sealing part 73) farthest away from the centroid O of the sealing element 7.

[0164] In the width direction, the distance between the third protruding point A3 and the first adapter end is referred to as D 31 , and the distance between the third protruding point A3 and the second adapter end is referred to as D 32 . In some embodiments of the present application, 0.8≤D 31 : D 32 ≤1.2.

[0165] When D 31 : D 32When <0.8, the maximum water flow path length from the third protrusion A3 to the second sealing portion 72 ( / the flow guide portion on the second sealing portion 72) is excessively larger than the maximum water flow path length from the third protrusion A3 to the fourth sealing portion 74 ( / the flow guide portion on the fourth sealing portion 74), the amount of water flowing downward from the second sealing portion 72 ( / the flow guide portion on the second sealing portion 72) is less than the amount of water flowing downward from the fourth sealing portion 74 ( / the flow guide portion on the fourth sealing portion 74), and it is easy to cause part of the water flowing downward from the fourth sealing portion 74 ( / the flow guide portion on the fourth sealing portion 74) along the third sealing portion 73 ( / the flow guide portion on the third sealing portion 73) to separate from the third sealing portion 73 ( / the flow guide portion on the third sealing portion 73), which is inconvenient for centralized cleaning.

[0166] When 1.2 31 : D 32 , the maximum water flow path length from the third protrusion A3 to the second sealing portion 72 ( / the flow guide portion on the second sealing portion 72) is excessively larger than the maximum water flow path length from the third protrusion A3 to the fourth sealing portion 74 ( / the flow guide portion on the fourth sealing portion 74), the amount of water flowing downward from the second sealing portion 72 ( / the flow guide portion on the second sealing portion 72) is greater than the amount of water flowing downward from the fourth sealing portion 74 ( / the flow guide portion on the fourth sealing portion 74), and it is easy to cause part of the water flowing downward from the second sealing portion 72 ( / the flow guide portion on the second sealing portion 72) along the third sealing portion 73 ( / the flow guide portion on the third sealing portion 73) to separate from the third sealing portion 73 ( / the flow guide portion on the third sealing portion 73), which is inconvenient for centralized cleaning.

[0167] When 0.8 31 : D 32 , the maximum water flow path length from the third protrusion A3 to the second sealing portion 72 ( / the flow guide portion on the second sealing portion 72) is similar to the maximum water flow path length from the third protrusion A3 to the fourth sealing portion 74 ( / the flow guide portion on the fourth sealing portion 74), so as to more evenly cause the water flowing downward from the second sealing portion 72 ( / the flow guide portion on the second sealing portion 72) or the fourth sealing portion 74 ( / the flow guide portion on the fourth sealing portion 74) to flow along the third sealing portion 73 ( / the flow guide portion on the third sealing portion 73); on the other hand, it can avoid that one side path is too long to cause water to separate from the third sealing portion 73 ( / the flow guide portion on the third sealing portion 73) without being guided to the third protrusion 730, which is inconvenient for centralized cleaning.

[0168] When D 31 : D 32≤1.2, the maximum water flow path length from the third convex point A3 to the second sealing portion 72 ( / the water flow guide portion on the second sealing portion 72) is similar to the maximum water flow path length from the third convex point A3 to the fourth sealing portion 74 ( / the water flow guide portion on the fourth sealing portion 74), so that the water flowing downward guided by the second sealing portion 72 ( / the water flow guide portion on the second sealing portion 72) or the fourth sealing portion 74 ( / the water flow guide portion on the fourth sealing portion 74) flows along the third sealing portion 73 ( / the water flow guide portion on the third sealing portion 73) more evenly; on the other hand, it can avoid that the water is not guided to the third convex portion 730 and escapes from the third sealing portion 73 ( / the water flow guide portion on the third sealing portion 73) due to the too long path on one side, which is not convenient for centralized cleaning.

[0169] In the present application, 0.8≤D 31 : D 32 ≤1.2, the maximum water flow path length from the third convex point A3 to the second sealing portion 72 ( / the water flow guide portion on the second sealing portion 72) is similar to the maximum water flow path length from the third convex point A3 to the fourth sealing portion 74 ( / the water flow guide portion on the fourth sealing portion 74), so that the water flowing downward guided by the second sealing portion 72 ( / the water flow guide portion on the second sealing portion 72) or the fourth sealing portion 74 ( / the water flow guide portion on the fourth sealing portion 74) flows along the third sealing portion 73 ( / the water flow guide portion on the third sealing portion 73) more evenly; on the other hand, it can avoid that the water is not guided to the third convex portion 730 and escapes from the third sealing portion 73 ( / the water flow guide portion on the third sealing portion 73) due to the too long path on one side, which is not convenient for centralized cleaning.

[0170] In some embodiments of the present application, D 31 =D 32 . The above setting makes the maximum water flow path length from the third convex point A3 to the second sealing portion 72 ( / the water flow guide portion on the second sealing portion 72) equal to the maximum water flow path length from the third convex point A3 to the fourth sealing portion 74 ( / the water flow guide portion on the fourth sealing portion 74), so that the water flowing downward guided by the second sealing portion 72 ( / the water flow guide portion on the second sealing portion 72) or the fourth sealing portion 74 ( / the water flow guide portion on the fourth sealing portion 74) flows along the third sealing portion 73 ( / the water flow guide portion on the third sealing portion 73) more evenly; on the other hand, it can avoid that the water is not guided to the third convex portion 730 and escapes from the third sealing portion 73 ( / the water flow guide portion on the third sealing portion 73) due to the too long path on one side, which is not convenient for centralized cleaning.

[0171] In some embodiments of the present application, as Figure 9 , the water flow guide portion on the first sealing portion 71 is a water receiving portion 715. That is, the water receiving portion 715 (the water flow guide portion on the first sealing portion 71) is formed on the first sealing portion 71. The opening of the water receiving portion 715 faces away from the center O of the sealing element 7, so as to at least collect the condensed water above the sealing element 7.

[0172] In some embodiments of the present application, the receiving portion 715 is provided as a receiving groove. The opening of the receiving groove faces upward.

[0173] In some embodiments of the present application, the first sealing portion 71 comprises a first matching portion 711.

[0174] In some embodiments of the present application, the first sealing portion 71 comprises a first matching portion 711.

[0175] In some embodiments of the present application, the first matching portion 711 cooperates with the door body 4, and the first matching portion 712 is located on the side of the first matching portion 711 away from the door body 4. When the sealing element 7 is arranged on the door body 4, the first matching portion 712 is used to cooperate with the shell 2 when the door body 4 is closed, so as to seal the door body 4 and the shell 2.

[0176] In some embodiments of the present application, the first matching portion 711 cooperates with the door body 4, and the first matching portion 712 is located on the side of the first matching portion 711 away from the door body 4. When the sealing element 7 is arranged on the door body 4, the first matching portion 712 is used to cooperate with the shell 2 when the door body 4 is closed, so as to seal the door body 4 and the shell 2.

[0177] In some embodiments of the present application, the first matching portion 711 cooperates with the door body 4, and the first matching portion 712 is located on the side of the first matching portion 711 away from the door body 4. When the sealing element 7 is arranged on the door body 4, the first matching portion 712 is used to cooperate with the shell 2 when the door body 4 is closed, so as to seal the door body 4 and the shell 2.

[0178] In some embodiments of the present application, the first matching portion 711 cooperates with the door body 4, and the first matching portion 712 is located on the side of the first matching portion 711 away from the door body 4. When the sealing element 7 is arranged on the door body 4, the first matching portion 712 is used to cooperate with the shell 2 when the door body 4 is closed, so as to seal the door body 4 and the shell 2.

[0179] When the door body 4 is closed, the door body 4 and the shell 2 extrude the sealing element 7, and the first positive support portion 713 and the first negative support portion 714 abut. The cooperation between the first positive support portion 713 and the first negative support portion 714 enables the first matching portion 712 and the first matching portion 711 to support each other, thereby ensuring effective sealing. In addition, the first positive support portion 713 and the first negative support portion 714 support each other, thereby separating the adjacent two side walls of the first matching portion 712 and the first matching portion 711, so that the condensed water can smoothly enter the receiving portion 715 (the receiving groove) through the gap between the adjacent two first positive support portions 713, thereby ensuring that the receiving portion 715 (the receiving groove) effectively collects water; and avoiding that the extrusion force on the sealing element 7 is too large, so that the first matching portion 712 and the first matching portion 711 are completely close to each other, thereby preventing the receiving portion 715 from receiving the condensed water on the upper part of the sealing element 7.

[0180] In addition, the first positive support portions 713 arranged at intervals cooperate with the first negative support portions 714, so that the first negative support portions 714 interact with the first positive support portions 713 at intervals, thereby effectively preventing the first positive support portions 713 and the first negative support portions 714 from adhering to each other.

[0181] In some embodiments of the present application, the receiving portion 715 includes a water receiving bottom wall arranged opposite to the opening thereof.

[0182] In some embodiments of the present application, along a direction from the plane in which the opening of the receiving portion 715 is located to the water receiving bottom wall, the cross-sectional area of the first positive support portion 713 perpendicular to the height direction (the direction from the plane in which the opening of the receiving portion 715 is located to the water receiving bottom wall) gradually decreases. The above arrangement allows the receiving portion 715 (the receiving groove) to have a large enough space to receive condensed water away from the opening end thereof. On the other hand, the above arrangement allows the first positive support portion 713 to be transitionally connected to the first cooperation portion 711, so that the connection strength is better.

[0183] In some embodiments of the present application, along a direction from the plane in which the opening of the receiving portion 715 is located to the water receiving bottom wall, the distance between two adjacent first positive support portions 713 gradually increases. The above arrangement allows water entering the receiving portion 715 (the receiving groove) to quickly flow to the water receiving bottom wall of the receiving portion 715. In addition, the above arrangement allows the receiving portion 715 (the receiving groove) to have a large enough space to receive condensed water away from the opening end thereof.

[0184] In some embodiments of the present application, along the height direction, the maximum distance between the plane in which the opening of the receiving portion 715 is located and the water receiving bottom wall is denoted as L 11 . The first positive support portion 713 extends along a direction from the plane in which the opening of the receiving portion 715 is located to the water receiving bottom wall (the depth direction of the receiving portion 715), and the length thereof in the direction is denoted as L 12 . Wherein, 0.4≤L 12 :L 11 ≤0.8.

[0185] When L 12 :L 11 <0.4, along the depth direction of the receiving portion 715 (the direction from the plane in which 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, and the length of the first positive support portion 713 for interacting with the first negative support portion 714 is too small, which easily causes the first positive support portion 713 and the first negative support portion 714 to be misaligned with each other, so that the first cooperation portion 711 and the adjacent side wall of the first fitting portion 712 are fitted or the first negative support portion 714 and the first cooperation portion 711 are fitted, thereby failing to effectively collect water. On the other hand, the fitting of the first cooperation portion 711 and the adjacent side wall of the first fitting portion 712 easily causes the two to adhere to each other.

[0186] When 0.812 : L 11 When L 12 : L 11 , the length of the first positive support portion 713 is too large in the depth direction of the receiving portion 715 (in the direction from the plane where the opening of the receiving portion 715 is located to the water bottom wall), the first positive support portion 713 occupies a large internal space of the receiving portion 715, and the maximum water collection volume of the receiving portion 715 is reduced; when the water volume is too large, the excess condensed water cannot be effectively collected by the receiving portion 715 and then guided downward by the second sealing portion 72 or the fourth sealing portion 74.

[0187] When 0.4≤L 12 : L 11 , the first positive support portion 713 and the first negative support portion 714 can have sufficient interaction area, so that the first positive support portion 713 and the first negative support portion 714 are not misaligned with each other, the adjacent side walls of the first matching portion 711 and the first fitting portion 712 are fitted, or the first negative support portion 714 and the first matching portion 711 are fitted so that the condensed water above them cannot enter the receiving portion 715 or the first matching portion 711 and the first fitting portion 712 are adhered, which is not conducive to water collection.

[0188] When L 12 : L 11 ≤0.8, the receiving portion 715 can have sufficient water collection space to effectively collect condensed water.

[0189] In this application, 0.4≤L 12 : L 11 ≤0.8, on the one hand, the first positive support portion 713 and the first negative support portion 714 can have sufficient interaction area, so that the first positive support portion 713 and the second negative support portion 724 are not misaligned with each other, the adjacent side walls of the first matching portion 711 and the first fitting portion 712 are fitted, or the first negative support portion 714 and the first matching portion 711 are fitted so that the condensed water above them cannot be collected or the two are adhered. On the other hand, the receiving portion 715 can have sufficient water collection space to effectively collect condensed water.

[0190] In some embodiments of the application, the first sealing portion 71 includes a first connecting portion 716, and the first connecting portion 716 is located on the side of the first matching portion 711 away from the first fitting portion 712.

[0191] The door body 4 is provided with a first fixing portion 491. The first connecting portion 716 cooperates with the first fixing portion 491 to connect the first sealing portion 71 to the door body 4.

[0192] In some embodiments of the application, the first connecting portion 716 is provided in a protruding strip shape. The first fixing portion 491 is provided in a groove shape.

[0193] In some embodiments of the present application, the flow guide portion on the second sealing portion 72 (and / or the fourth sealing portion 74) is a water guide portion 725. That is, the water guide portion 725 is formed on the second sealing portion 72 (and / or the fourth sealing portion 74) (the flow guide portion on the second sealing portion 72 (and / or the fourth sealing portion 74)). The opening of the water guide portion 725 faces away from the center O of the sealing element 7. The water guide portion 725 is in communication with the receiving portion 715 to guide the condensed water in the receiving portion 715 to the side close to the third sealing portion 73.

[0194] In some embodiments of the present application, the water guide portion 725 is provided as a water guide groove. The opening of the water guide groove faces away from the center O of the sealing element 7.

[0195] In some embodiments of the present application, the second sealing portion 72 comprises a second matching portion 721.

[0196] In some embodiments of the present application, the second sealing portion 72 comprises a second matching portion 721.

[0197] In some embodiments of the present application, the second matching portion 721 is located on the side of the second sealing portion 72 away from the door body 4, and the second matching portion 721 is matched with the door body 4. When the sealing element 7 is arranged on the door body 4, the second matching portion 721 is matched with the shell 2 when the door body 4 is closed to seal the door body 4 and the shell 2.

[0198] In some embodiments of the present application, the second matching portion 721 is located on the side of the second sealing portion 72 away from the door body 4, and the second matching portion 721 is matched with the door body 4. When the sealing element 7 is arranged on the door body 4, the second matching portion 721 is matched with the shell 2 when the door body 4 is closed to seal the door body 4 and the shell 2.

[0199] In some embodiments of the present application, the second matching portion 721 is located on the side of the second sealing portion 72 away from the door body 4, and the second matching portion 721 is matched with the door body 4. When the sealing element 7 is arranged on the door body 4, the second matching portion 721 is matched with the shell 2 when the door body 4 is closed to seal the door body 4 and the shell 2.

[0200] In some embodiments of the present application, the second matching portion 721 is located on the side of the second sealing portion 72 away from the door body 4, and the second matching portion 721 is matched with the door body 4. When the sealing element 7 is arranged on the door body 4, the second matching portion 721 is matched with the shell 2 when the door body 4 is closed to seal the door body 4 and the shell 2.

[0201] When the door body 4 is closed, the door body 4 and the shell 2 press the sealing element 7, and the second positive support portion 723 and the second negative support portion 724 abut. The cooperation between the second positive support portion 723 and the second negative support portion 724 ensures that the second matching portion 721 and the second matching portion 721 support each other, thereby ensuring effective sealing.

[0202] In some embodiments of the present application, the water guide portion 725 comprises a water guide bottom wall arranged opposite to the plane in which the opening of the water guide portion 725 is located. The second positive support portion 723 and the second negative support portion 724 support each other after being arranged opposite to each other, and the second fitting portion 722 is separated from the two adjacent side walls of the second fitting portion 721. The second positive support portion 723, the second negative support portion 724, the second fitting portion 722, the second fitting portion 721, and the water guide bottom wall jointly define a water guide channel. The condensed water guided by the receiving portion 715 of the first sealing portion 71 flows to the side close to the third sealing portion 73 through the water guide channel.

[0203] In some embodiments of the present application, the plurality of second positive support portions 723 are arranged at intervals along the height direction of the second fitting portion 721. The second positive support portion 723 and the second negative support portion 724 are arranged opposite to each other, and the second fitting portion 722 is separated from the two adjacent side walls of the second fitting portion 721. The plurality of second positive support portions 723 arranged at intervals and the second negative support portion 724 are arranged opposite to each other, and the second negative support portion 724 is arranged at intervals and interacts with the second positive support portion 723, which can effectively prevent the two from adhering to each other.

[0204] In some embodiments of the present application, along the direction from the plane in which the opening of the water guide portion 725 is located to the water guide bottom wall of the water guide portion 725, the cross-sectional area of the second positive support portion 723 perpendicular to the width direction gradually decreases. The above arrangement makes the water guide portion 725 (water guide groove) have a large enough space to receive condensed water away from the opening end of the water guide portion 725. On the other hand, the above arrangement makes the second positive support portion 723 and the second fitting portion 721 transitionally connected, and the connection strength is better.

[0205] In some embodiments of the present application, along the direction from the plane in which the opening of the water guide portion 725 is located to the water guide bottom wall of the water guide portion 725, the interval between the two adjacent second positive support portions 723 gradually increases. The above arrangement makes the water guide portion 725 (water guide groove) have a large enough space to receive condensed water away from the opening end of the water guide portion 725; in addition, the condensed water entering the water guide channel is prevented from flowing out along the width direction through the interval between the two adjacent second positive support portions 723 during the downward flow, and the efficiency of the downward flow of the water guide portion 725 is improved.

[0206] The maximum distance between the plane in which the opening of the water guide portion 725 is located and the water guide bottom wall in the width direction is denoted as L 21 . The second positive support portion 723 extends along the direction from the plane in which the opening of the water guide portion 725 is located to the water guide bottom wall (the depth direction of the water guide portion 725), and the length of the second positive support portion 723 in this direction is denoted as L 22 . Wherein, 0.4≤L 22 : L 21 ≤0.8.

[0207] When L 22 : L 21When <0.4, the length of the second positive support portion 723 in the depth direction of the water guide portion 725 (in 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 725) is too small, the length of the second positive support portion 723 for interaction with the second negative support portion 724 is too small, and the second positive support portion 723 and the second negative support portion 724 are easily misaligned, causing the adjacent side walls of the second fitting portion 721 and the second fitting portion 722 to at least partially fit or causing the second negative support portion 724 and the second fitting portion 721 to fit, resulting in the second fitting portion 721 and the second fitting portion 722 being adhered.

[0208] When 0.8 < L 22 : L 21 , the length of the second positive support portion 723 in the depth direction of the water guide portion 725 (in 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 725) is too large, the second positive support portion 723 occupies too much internal space of the water guide portion 725, and the maximum water collection volume of the water guide portion 725 is reduced; when there is too much water, the excess condensed water cannot be guided downward by the water guide portion 725 to the third sealing portion 73; causing the condensed water to drip below the sealing element 7 along the width of both ends, resulting in a large area of water accumulation on the bottom wall of the storage room where the low-pressure storage device 1 is placed, which is inconvenient to clean.

[0209] When 0.4 ≤ L 22 : L 21 , the second positive support portion 723 and the second negative support portion 724 have sufficient interaction area, avoiding misalignment of the second positive support portion 723 and the second negative support portion 724, which causes the adjacent side walls of the second fitting portion 721 and the second fitting portion 722 to fit or the second negative support portion 724 and the second fitting portion 721 to fit, resulting in the two being adhered.

[0210] When L 22 : L 21 ≤ 0.8, the water guide portion 725 has sufficient water collection space to effectively collect condensed water.

[0211] In this application, the setting of 0.4 ≤ L 22 : L 21 ≤ 0.8 on the one hand ensures that the second positive support portion 723 and the second negative support portion 724 have sufficient interaction area, avoiding misalignment of the second positive support portion 723 and the second negative support portion 724, which causes the adjacent side walls of the second fitting portion 721 and the second fitting portion 722 to fit or the second negative support portion 724 and the second fitting portion 721 to fit, resulting in the two being adhered. On the other hand, it ensures that the water guide portion 725 has sufficient water collection space to effectively collect and guide the condensed water.

[0212] In some embodiments of the present application, the second sealing portion 72 comprises a second connecting portion 726, which is located on the side of the second fitting portion 721 away from the second abutting portion 722.

[0213] The door body 4 is provided with a second fixing portion 492. The second connecting portion 726 cooperates with the second fixing portion 492 to connect the second sealing portion 72 with the door body 4.

[0214] In some embodiments of the present application, the second connecting portion 726 is provided in the form of a convex strip. The second fixing portion 492 is provided in the form of a concave groove.

[0215] It should be noted that in some embodiments of the present application, the structure of the fourth sealing portion 74 is the same as that of the second sealing portion 72, which will not be described here. In some embodiments of the present application, the fourth sealing portion 74 comprises a second fitting portion 721, a second abutting portion 722, a second connecting portion 726, a water guiding portion 725, a second positive supporting portion 723, a second negative supporting portion 724, and other components identical in structure to those of the third sealing portion 73.

[0216] In some embodiments of the present application, L 11 = L 21 The above arrangement facilitates the processing design of the sealing element 7.

[0217] In some embodiments of the present application, L 12 = L 22 The above arrangement facilitates the processing design of the sealing element 7.

[0218] In some embodiments of the present application, the water guiding portion on the third sealing portion 73 is a water collecting portion 735. That is, the third sealing portion 73 is formed with a water collecting portion 735 (water guiding portion on the third sealing portion 73). The opening of the water collecting portion 735 faces away from the first sealing portion 71 (away from the centroid O) to at least concentrate the condensed water flowing downward from the second sealing portion 72 and / or the fourth sealing portion 74 in the water collecting portion 735.

[0219] In some embodiments of the present application, the water collecting portion 735 is provided in the form of a water collecting groove. The opening of the water collecting groove faces downward.

[0220] In some embodiments of the present application, the third sealing portion 73 comprises a third fitting portion 731.

[0221] In some embodiments of the present application, the third sealing portion 73 comprises a third abutting portion 732. The third abutting portion 732 is arranged at a distance from the third fitting portion 731.

[0222] In some embodiments of the present application, the third abutting portion 732 is located on the side of the third matching portion 731 away from the door body 4. The third matching portion 731 is matched with the door body 4. When the sealing element 7 is arranged on the door body 4, the third abutting portion 732 is used to match with the shell 2 when the door body 4 is closed, so as to seal the door body 4 and the shell 2.

[0223] In some embodiments of the present application, the third abutting portion 732 and the third matching portion 731 are respectively opposite two groove walls of the water collecting groove.

[0224] In some embodiments of the present application, a plurality of third positive supporting portions 733 are arranged on the side wall of the third matching portion 731 close to the third abutting portion 732. As a settable way, the third positive supporting portion 733 is a protrusion formed on the third matching portion 731.

[0225] In some embodiments of the present application, a third negative supporting portion 734 extending along the width direction of the third abutting portion 732 is arranged on the side wall of the third matching portion 731 close to the third abutting portion 732. As a settable way, the third negative supporting portion 734 is a convex strip formed on the third abutting portion 732.

[0226] In some embodiments of the present application, the water collecting portion 735 includes a water collecting bottom wall arranged opposite to the plane where the opening is located. When the third positive supporting portion 733 and the first negative supporting portion 714 support each other, the adjacent two side walls of the third abutting portion 732 and the third matching portion 731 are separated; the third positive supporting portion 733, the third negative supporting portion 734, the third abutting portion 732, the third matching portion 731, and the water collecting bottom wall jointly define a water collecting channel. The condensed water flowing downward through the second sealing portion 72 and / or the fourth sealing portion 74 enters the water collecting channel.

[0227] In some embodiments of the present application, the distance between the third sealing portion 73 and the first reference surface P1 increases first and then decreases along the direction from the first adapter end to the second adapter end; the condensed water entering the water collecting channel through the second sealing portion 72 and / or the fourth sealing portion 74 flows to the third protruding portion 730. The condensed water is gathered at the third protruding portion 730 through the third sealing portion 73, so as to facilitate the collection or cleaning of the condensed water, and to avoid the condensed water from entering the storage container 3 when the door body 4 is opened, thereby affecting the storage state of the food materials.

[0228] In some embodiments of the present application, the plurality of third positive supporting portions 733 are arranged at intervals along the width direction of the third matching portion 731. The third positive supporting portion 733 and the third negative supporting portion 734 are matched, so that the adjacent two side walls of the third abutting portion 732 and the third matching portion 731 are separated. The plurality of third positive supporting portions 733 arranged at intervals and the third negative supporting portion 734 are matched, so that the third negative supporting portion 734 interacts with the third positive supporting portion 733 at intervals, which can effectively avoid the adhesion of the two.

[0229] In some embodiments of the present application, the cross-sectional area of the third positive support portion 733 perpendicular to the height direction gradually decreases in the direction from the opening plane of the water collecting portion 735 to the water collecting bottom wall. The above arrangement allows the water collecting portion 735 (water collecting groove) to have a large enough space to receive condensed water away from the opening end thereof. On the other hand, the above arrangement allows the third positive support portion 733 to be transitionally connected with the third matching portion 731, and the connection strength is better.

[0230] In some embodiments of the present application, the distance between two adjacent third positive support portions 733 gradually increases in the direction from the opening plane of the water collecting portion 735 to the water collecting bottom wall. The above arrangement allows the water collecting portion 735 (water collecting groove) to have a large enough space to receive condensed water away from the opening end thereof; in addition, the condensed water entering the water collecting channel is less likely to flow out in the width direction through the gap between two adjacent third positive support portions 733 during the process of flowing in the width direction, and the efficiency of the water collecting portion 735 in guiding the flow in the width direction is improved.

[0231] The maximum distance between the opening plane of the water collecting portion 735 and the water collecting bottom wall in the height direction is denoted as L 31 The third positive support portion 733 extends in the direction from the opening plane of the water collecting portion 735 to the water collecting bottom wall (the depth direction of the water guiding portion 725), and the length thereof in this direction is denoted as L 32 . Wherein, 0.4≤L 32 : L 31 ≤0.8.

[0232] When L 32 : L 31 <0.4, the length of the third positive support portion 733 in the depth direction of the water collecting portion 735 (in the direction from the opening plane of the water collecting portion 735 to the water collecting bottom wall) is too small, the length of the third positive support portion 733 for interacting with the third negative support portion 734 is too small, and the third positive support portion 733 and the third negative support portion 734 are likely to be misaligned with each other, which causes the adjacent side walls of the third matching portion 731 and the third adhering portion 732 to be adhered or the third negative support portion 734 and the third matching portion 731 to be adhered, resulting in the adhesion of the third matching portion 731 and the third adhering portion 732.

[0233] When 0.8 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.

[0234] 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.

[0235] 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.

[0236] 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.

[0237] 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.

[0238] 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.

[0239] In some embodiments of this application, L 32 =L22 or L 32 = L 12 The above setting facilitates the processing design of the sealing element 7. Among them, L 32 = L 12 So that the first sealing part 71 and the third sealing part 73 have versatility, convenient to install and use.

[0240] In some embodiments of the application, the third sealing part 73 comprises a third connecting part 736, which is located on the side of the third matching part 731 away from the second fitting part 722.

[0241] 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 with the door body 4.

[0242] In some embodiments of the application, the third connecting part 736 is provided in a convex strip shape. The third fixing part 493 is provided in a groove shape.

[0243] In some embodiments of the application, the first connecting part 716, the second connecting part 726 of the second sealing part 72, the third connecting part 736, and the second connecting part 726 of the fourth sealing part 74 are sequentially connected in a ring shape.

[0244] Correspondingly, the first fixing part 491, the second fixing part 492 cooperating with the second connecting part 726 of the second sealing part 72, the third fixing part 493, and the second fixing part 492 cooperating with the second connecting part 726 of the fourth sealing part 74 are sequentially connected in a ring shape on the door body 4. The above setting facilitates the processing design of the sealing element 7, and also facilitates the installation of the sealing element 7.

[0245] In some embodiments of the 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 have versatility, and at the same time, the second sealing part 72 and the fourth sealing part 74 have versatility, convenient to install and use.

[0246] It should be noted that in some embodiments of the application, when the sealing element 7 is fixed on the shell 2, the first connecting part 716 is arranged on the side of the first fitting part 712 away from the first fitting part 711; the second connecting part 726 is arranged on the side of the second fitting part 722 away from the second fitting part 721; the third connecting part 736 is arranged on the side of the third fitting part 732 away from the third fitting part 731. Correspondingly, the first fixing part 491, the second fixing part 492, and the third fixing part 493 are arranged on the shell 2.

[0247] In some embodiments of the present application, when the sealing element 7 is fixed to the shell 2, the first fitting part 711, the second fitting part 721, and the third fitting part 731 are fitted with the shell 2, and the first bonding part 712, the second bonding part 722, and the third bonding part 732 are used to cooperate with the door body 4 when the door body 4 is closed. Correspondingly, the first fixing part 491, the second fixing part 492, and the third fixing part 493 are arranged on the shell 2; the first connecting part arranged on the first fitting part 711, the second connecting part 726 arranged on the second fitting part 721, the third connecting part 736 arranged on the third fitting part 731, and the second connecting part 726 arranged on the fourth sealing part 74 are connected with the fixing parts (the first fixing part 491, the second fixing part 492, and the third fixing part 493) on the shell 3.

[0248] In some embodiments of the present application, the sealing element 7 is pasted on the door body 4 or the shell 2 through the first fitting part 711, the second fitting part 721, and the third fitting part 731.

[0249] In some embodiments of the present application, the sealing element 7 is pasted on the shell 2 through the first bonding part 712, the second bonding part 722, and the third bonding part 732.

[0250] In some embodiments of the present application, as shown in Figure 2 , Figures 5-7 and Figures 13-15 , the door body 4 comprises a transparent part 40. The transparent part 40 is located at the front end of the storage container 3, so that the stored materials placed in the storage container 3 can be visible through the transparent part 40.

[0251] In the present application, the transparent part 40 of the door body 4 is arranged to make the storage container 3 visible through the door body 4, so that the user can see the state of the internal food materials without opening the low-pressure storage device 1, further improving the convenience of the user using the low-pressure storage device 1, while reducing the frequency of the user opening and closing the low-pressure storage device 1, thereby reducing the frequency of the drawer device pumping the low-pressure storage device 1, improving the service life of the vacuum drawer, avoiding the increase of energy consumption, and ensuring the vacuum preservation effect of the food materials.

[0252] In some embodiments of the present application, the storage container 3 comprises a storage bottom 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 bottom plate 30. The first storage side plate 31 and the second storage side plate 32 are oppositely arranged, and the storage end plate 33 is located at one end of the storage bottom plate 30 away from the door body 4. The first storage side plate 31 and the second storage side plate 32 extend in the front-rear direction.

[0253] In some embodiments of the present application, the storage container 3 comprises a first mounting portion 34 at one end of the storage bottom plate 30 opposite the storage end plate 33, which is used to connect with the door body 4.

[0254] In some embodiments of the present application, the maximum height of the first mounting portion 34 in the direction perpendicular to the storage bottom plate 30 (in the height direction) is less than the height of the storage end plate 33, so as to reduce the obstruction of the first mounting portion 34 to the transparent portion 40 and increase the area of the interior space of the storage container 3 visible through the transparent portion 40.

[0255] In some embodiments of the present application, the maximum height of the first mounting portion 34 in the direction perpendicular to the storage bottom plate 30 (in the height direction) is less than the height of the storage opening 21, so as to reduce the obstruction of the first mounting portion 34 to the transparent portion 40 and increase the area of the interior space of the storage container 3 visible through the transparent portion 40.

[0256] The transparent portion 40 of the door body 4 cooperates with the first mounting portion 34 of the storage container 3 to fix the connection between the door body 4 and the storage container 3. The maximum height of the first mounting portion 34 in the direction perpendicular to the storage bottom plate 30 (in the height direction) is less than the height of the transparent portion 40, so as to reduce the obstruction of the first mounting portion 34 to the transparent portion 40 and increase the area of the interior space of the storage container 3 visible through the transparent portion 40. Wherein, the maximum height of the first mounting portion 34 in the direction perpendicular to the storage bottom plate 30 (in the height direction) is denoted as H1, and the height of the transparent portion 40 is denoted as H2. Wherein, 0≤H1:H2≤0.3.

[0257] When 0.3<H1:H2, the obstruction of the first mounting portion 34 to the transparent portion 40 is too large, the visible area of the interior space of the storage container 3 through the transparent portion 40 is reduced, which is not conducive to observing the storage through the transparent portion 40.

[0258] In the present application, 0≤H1:H2≤0.3 effectively ensures the visible area of the interior space of the storage container 3 through the transparent portion 40, which is convenient for observing the storage through the transparent portion 40.

[0259] It should be noted that the maximum height of the first mounting portion 34 is the maximum distance between the end of the first mounting portion 34 away from the storage bottom plate 30 and the storage bottom plate 30.

[0260] In some embodiments of the present application, the end surface of the first mounting portion 34 away from the storage bottom plate 30 is parallel to the storage bottom plate 30. At this time, the distance between any point on the end surface of the first mounting portion 34 away from the storage bottom plate 30 and the storage bottom plate 30 is equal, and the distance between any point on the end surface of the first mounting portion 34 away from the storage bottom plate 30 and the storage bottom plate 30 is the maximum height of the first mounting portion 34.

[0261] In some embodiments of the present application, as shown inFigures 2-7 , Figures 13-15 The low-pressure storage device 1 comprises a locking assembly 5 for locking or unlocking the door body 4 and the shell 2.

[0262] In some embodiments of the present application, the locking assembly 5 comprises a first locking portion 51. The first locking portion 51 is arranged at opposite ends of the shell 2 along the width direction.

[0263] In some embodiments of the present application, the locking assembly 5 comprises a second locking portion 52. The second locking portion 52 is arranged at opposite ends of the door body 4 along the width direction, and is used for cooperating with the first locking portion 51 at the corresponding side to lock or unlock the door body 4 and the shell 2.

[0264] In some embodiments of the present application, the locking assembly 5 comprises a handle 53 extending along the width direction of the door body 4. The handle 53 is connected with the second locking portion 52 at the corresponding side along the end of the width direction. When the handle 53 moves, the second locking portion 52 at both ends of the handle 53 is driven to move, so that the second locking portion 52 moves relative to the first locking portion 51, and the locking or unlocking of the first locking portion 51 and the second locking portion 52 is realized, and then the locking or unlocking of the shell 2 and the door body 4 is realized.

[0265] In some embodiments of the present application, the handle 53 is rotatably connected with the door body 4 through the second locking portion 52 at opposite ends of the handle 53. The rotation axis of the handle 53 extends along the width direction of the door body 4.

[0266] In some embodiments of the present application, as shown in Figure 4 The first locking portion 51 comprises a locking matching portion 510 arranged on the shell 2. The locking matching portion 510 comprises a locking wall 511 perpendicular to the bottom wall of the shell 2 and a guide wall 512 arranged obliquely relative to the locking wall 511; the guide wall 512 is located on the side (front side) of the locking wall 511 close to the storage port 21. The guide wall 512 is formed by extending from one end of the locking wall 511 close to the bottom wall of the shell 2 to the side close to the storage port 21 and the top wall of the shell.

[0267] In some embodiments of the present application, as shown in Figures 5-6 The second locking portion 52 comprises a locking plate 520 and a locking block 521 arranged on one side of the locking plate 520 facing the side wall of the shell 2. When the locking plate 520 rotates under the driving of the handle 53, the locking block 521 slides along the guide wall 512 to the rear side of the locking wall 511 to realize the locking of the door body 4 and the shell 2.

[0268] In some embodiments of the present application, the locking plate 520 is in the form of a flat plate, which comprises a first locking plate strip 5201, a second locking plate strip 5202 and a third locking plate strip 5203 connected in sequence.

[0269] The locking plate 520 further comprises a fourth locking plate strip 5204 at the joint of the first locking plate strip 5201 and the third locking plate strip 5203. The fourth locking plate strip 5204 is on the same side of the first locking plate strip 5201 as the third locking plate strip 5203. The fourth locking plate strip 5204 forms an acute angle with the first locking plate strip 5201.

[0270] In some embodiments of the present application, the middle position of the second locking plate strip 5202 is rotatably fixed to the end of the door body 45. The locking block 521 is arranged at the joint of the second locking plate strip 5202 and the third locking plate strip 5203. The end of the fourth locking plate strip 5204 away from the third locking plate strip 5203 is fixed to the corresponding end of the handle 53. When the handle 53 rotates and moves, the handle 53 drives the second locking part 52 as a whole to rotate around the rotation axis at the middle position of the second locking plate strip 5202.

[0271] The above arrangement of the second locking part makes the second locking part occupy a small width space of the low-pressure storage device 1, so as to increase the width size of the door body 4, adaptively increase the width size of the storage opening 21, increase the width size of the storage container 3, thereby increasing the volume of the storage container 3 and the storable amount of the low-pressure storage device 1.

[0272] In some embodiments of the present application, as shown in FIG. 1, Figures 13-21 , Figures 28-30 The low-pressure storage device 1 comprises a pressure relief assembly 6 for relieving the low-pressure storage device 1 that is vacuumed, so as to facilitate the opening of the door body 4.

[0273] In some embodiments of the present application, the door body 4 is provided with a pressure relief hole 11 that communicates the external environment of the low-pressure storage device 1 with the internal space thereof. The pressure relief assembly 6 is arranged on the door body 4 and is used to open or close the pressure relief hole 11. Before the air extraction device extracts air to form a low-pressure environment, the pressure relief assembly 6 closes the pressure relief hole 11, so as to form a sealed space inside the low-pressure storage device 1; and the air inside the low-pressure storage device 1 is extracted by the air extraction device, so as to form a low-pressure storage environment.

[0274] When it is needed to open the door body 4, the pressure relief assembly 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, so that the pressure difference between the inside and outside of the low-pressure storage device 1 gradually decreases, thereby facilitating the user to open the door body 4.

[0275] In some embodiments of the present application, the pressure relief assembly 6 comprises a pressure relief piece 60 for opening or closing the pressure relief hole 11.

[0276] In some embodiments of the present application, the pressure relief assembly 6 comprises a pressure relief fixing portion 62. The pressure relief member 60 is mounted on the pressure relief fixing portion 62. The pressure relief fixing portion 62 is rotatably connected to the door body 4 and can drive the pressure relief member 60 disposed thereon to rotate relative to the door body 4 to open or close the pressure relief hole 11.

[0277] In some embodiments of the present application, the rotation axis of the pressure relief fixing portion 62 relative to the door body 4 extends along the width direction of the door body 4.

[0278] In some embodiments of the present application, the rotation axis of the pressure relief fixing portion 62 is coaxial with the rotation axis of the handle 53 (or the second locking portion 52).

[0279] In some embodiments of the present application, the pressure relief assembly 6 comprises a resilient member 61. The resilient member 61 connects the door body 4 and the pressure relief fixing portion 62.

[0280] When the pressure relief member 60 opens the pressure relief hole 11, the resilient member 61 is compressed, and the resilient member 61 accumulates elastic potential energy.

[0281] When the pressure relief member 60 is switched from the state of opening the pressure relief hole 11 to the state of closing the pressure relief hole 11, the resilient member 61 releases at least part of the elastic potential energy to drive the pressure relief fixing portion 62 to move, and the pressure relief fixing portion 62 drives the pressure relief member 60 to approach the pressure relief hole 11 and finally closes the pressure relief hole 11.

[0282] In some embodiments of the present application, when the pressure relief member 60 closes the pressure relief hole 11, the resilient member 61 still accumulates elastic potential energy, and the resilient member 61 still has a tendency to drive the pressure relief fixing portion 62 to move the pressure relief member 60 to the side close to the pressure relief hole 11. The above makes the pressure relief member 60 able to press the pressure relief hole 11 when the pressure relief member 60 closes the pressure relief hole 11, ensuring the sealing performance of the pressure relief member 60 closing the pressure relief hole 11.

[0283] In some embodiments of the present application, the resilient member 61 is a torsion spring. The torsion spring comprises a torsion spring main body portion 610 coaxial with the rotation axis of the pressure relief fixing portion 62, a first torsion arm 611, and a second torsion arm 612. 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 portion 62. The above arrangement efficiently and stably transmits elastic force under the interaction of the door body 4 and the pressure relief fixing portion 62 through the first torsion arm 611 and the second torsion arm 612, and cooperates with the rotational movement of the pressure relief fixing portion 62, so that the pressure relief member 60 can be closely matched with the pressure relief hole 11.

[0284] In some embodiments of the present application, along the width direction of the door body 4, the resilient member 61 (torsion spring) is close to the pressure relief member 60, so that the force of the resilient member 61 (torsion spring) is more effectively transmitted to the pressure relief member 60, and the pressure relief member 60 is tightly matched with the pressure relief hole 11.

[0285] In some embodiments of the present application, the second torsion arm 612 includes a first branch arm 6121 extending from one end of the torsion spring body portion 610 along a tangential direction thereof (the torsion spring body portion 610). The first branch arm 6121 cooperates with the pressure relief fixing portion 62 to apply the force of the torsion spring to the pressure relief fixing portion 62.

[0286] In some embodiments of the present application, the second torsion arm 612 includes a first branch arm 6121 extending from one end of the torsion spring body portion 610, and a second branch arm 6122 extending from the first branch arm 6121 away from the one end of the torsion spring body portion 610 along a central axis direction of the torsion spring body portion 610.

[0287] In some embodiments of the present application, in the width direction, the second branch arm 6122 and the pressure relief member 60 are located on the same side of the first branch arm 6121, so that the force of the torsion spring applied to the pressure relief fixing portion 62 is more effectively transmitted to the pressure relief member 60 through the second branch arm 6122, and the pressure relief member 60 is tightly fitted with the pressure relief hole 11.

[0288] In some embodiments of the present application, in the width direction, the second branch arm 6122 at least partially overlaps with the pressure relief member 60, so that the force of the torsion spring applied to the pressure relief fixing portion 62 is more effectively transmitted to the pressure relief member 60 through the second branch arm 6122, and the pressure relief member 60 is tightly fitted with the pressure relief hole 11.

[0289] In some embodiments of the present application, in the width direction, the central axis of the pressure relief hole 11 is located between the opposite ends of the second branch arm 6122. So that the force of the torsion spring applied to the pressure relief fixing portion 62 is more effectively transmitted to the pressure relief member 60 through the second branch arm 6122, and the pressure relief member 60 is tightly fitted with the pressure relief hole 11.

[0290] In some embodiments of the present application, in the width direction of the door body 4, the distance between the end of the second branch arm 6122 of the torsion spring away from the first branch arm 6121 and the central axis of the pressure relief hole 11 is denoted as a first interval J1; wherein 0mm≤J1≤10mm.

[0291] When 10mm

[0292] In the present application, 0mm≤J1≤10mm, the distance between the second arm 6122 of the torsion spring and the pressure relief member 60 is sufficient to make the force exerted by the second arm 6122 of the torsion spring on the pressure relief member 60 through the pressure relief fixing part 62 to press the pressure relief member 60 against the pressure relief hole 11, effectively ensuring the air tightness of the cooperation between the two, ensuring the pumping efficiency of the pumping device, and also improving the low-pressure state maintaining capability of the low-pressure storage device 1.

[0293] In some embodiments of the present application, the rotation axis of the pressure relief fixing part 62 is located on the side of the pressure relief hole 11 close to the top wall of the shell 2. The above arrangement makes the pressure relief assembly 6 mainly distributed on the side of the pressure relief fixing part 62 close to the pressure relief hole 11, so as to reduce the shielding of the door body 4 (transparent part 40) on the side of the pressure relief fixing part 62 away from the pressure relief hole 11, so as to ensure the visualization area for observing the contents in the storage container 3 through the transparent part 40.

[0294] In some embodiments of the present application, the elastic member 61 and the pressure relief member 60 are respectively arranged on opposite sides of the pressure relief fixing part 62. The pressure relief member 60 is arranged on the side of the pressure relief fixing part 62 close to the pressure relief hole 11. The elastic member 61 connects the side of the pressure relief fixing part 62 away from the pressure relief member 60 and the door body 4.

[0295] In some embodiments of the present application, the pressure relief fixing part 62 comprises a first pressure relief plate 621. The pressure relief member 60 is arranged on the first pressure relief plate 621 and located on the side of the first pressure relief plate 621 close to the pressure relief hole 11. The first pressure relief plate 621 is rotatably connected with the door body 4, so as to drive the pressure relief member 60 to rotatably move relative to the door body 4, so as to make the pressure relief member 60 cooperate with or separate from the pressure relief hole 11, thereby closing or opening the pressure relief hole 11.

[0296] In some embodiments of the present application, when the pressure relief member 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 close to the first pressure relief plate 621 is denoted as a first included angle γ1, and 0°≤γ1≤3°.

[0297] When γ1>3°, γ1 is too large, the distance between the first pressure relief plate 621 and the plane where the pressure relief hole 11 is located is large, the distance between the first pressure relief plate 621 and the end face of the pressure relief hole 11 away from the storage container 3 on the door body 4 is large, the pressing force of the pressure relief member 60 on the pressure relief hole 11 is small, the air tightness of the cooperation between the pressure relief hole 11 and the pressure relief member 60 is poor, the pumping efficiency of the pumping device is reduced, and the effect of maintaining the low-pressure state of the low-pressure storage device 1 is also reduced. In addition, when γ1 is too large, the space required for the rotation of the first pressure relief plate 621 to drive the pressure relief member 60 away from the pressure relief hole 11 increases in the front-rear direction, which requires the door body 4 to reserve sufficient space, resulting in that the thickness of the door body 4 is too large.

[0298] In the present application, 0°≤γ1≤3°, so that the pressure relief member 60 can be closely matched with the pressure relief hole 11, effectively ensuring the air tightness of the two matched parts, ensuring the pumping efficiency of the pumping device, and also improving the low-pressure state maintaining capability of the low-pressure storage device 1. In addition, γ1 is limited in a small angle range, and when the first pressure relief plate 621 rotates to drive the pressure relief member 60 away from the pressure relief hole 11, the first pressure relief plate 621 needs less space in the front-back direction, which can reduce the occupation of the space of the door body 4 in the front-back direction, and reduce the thickness of the door body 4; so that there is more space in the storage room with fixed front-back direction size to increase the size of the shell 2 in the front-back direction, and increase the containing volume of the low-pressure storage device 1.

[0299] In some embodiments of the present application, the pressure relief fixing part 62 comprises 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 with the door body 4 through the elastic member 61. When the elastic member 61 is a torsion spring, the second torsion arm 612 of the torsion spring is connected with the second pressure relief plate 622.

[0300] In some embodiments of the present application, the second pressure relief plate 622 has the same rotation axis as the first pressure relief plate 621.

[0301] The above 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 be closely matched with the pressure relief hole 11, effectively ensuring the air tightness of the two matched parts, ensuring the pumping efficiency of the pumping device, and also improving the low-pressure state maintaining capability of the low-pressure storage device 1.

[0302] In some embodiments of the present application, as Figure 17 , the included angle between the second pressure relief plate 622 and the first pressure relief plate 621 is denoted as a second included angle γ2. Wherein, 55°≤γ2≤75°.

[0303] When γ2>75°, γ2is too large, 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, and when the second pressure relief plate 622 and the first pressure relief plate 621 rotate to drive the pressure relief member 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 that the thickness of the door body 4 is too large.

[0304] When γ2< 55°, γ2is too small, 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, which causes the opening angle between the first torsion arm 611 and the first branch arm 6121 of the torsion spring to be too large, the force of the torsion spring on the second pressure relief plate 622 is small, the compression force of the pressure relief part 60 on the pressure relief hole 11 is small, the air tightness of the pressure relief hole 11 and the pressure relief part 60 is poor, which reduces the pumping efficiency of the air pumping device and also reduces the effect of the low-pressure storage device 1 to maintain a low-pressure state.

[0305] The setting of γ2≤ 75° in the present application makes the space required by the second pressure relief plate 622 in the front-rear direction smaller when the second pressure relief plate 622 rotates to drive the pressure relief part 60 away from the pressure relief hole 11, which can reduce the occupation of the space of the door body 4 in the front-rear direction and reduce the thickness of the door body 4; and makes more space in the storage room with a fixed front-rear direction size to increase the size of the shell 2 in the front-rear direction and increase the containing volume of the low-pressure storage device 1.

[0306] The setting of 55°≤ γ2 in the present application makes the opening angle between the first torsion arm 611 and the second torsion arm 612 (the first branch arm 6121) of the torsion spring have sufficient force, so that the pressure relief part 60 can be tightly matched with the pressure relief hole 11, effectively ensuring the air tightness of the two, ensuring the pumping efficiency of the air pumping device, and also improving the low-pressure state maintaining ability of the low-pressure storage device 1.

[0307] In the present application, the setting of 55°≤ γ2≤ 75° makes the space required by the second pressure relief plate 622 in the front-rear direction smaller when the second pressure relief plate 622 rotates to drive the pressure relief part 60 away from the pressure relief hole 11, which can reduce the occupation of the space of the door body 4 in the front-rear direction and reduce the thickness of the door body 4; and makes more space in the storage room with a fixed front-rear direction size to increase the size of the shell 2 in the front-rear direction and increase the containing volume of the low-pressure storage device 1; on the other hand, the opening angle between the first torsion arm 611 and the second torsion arm 612 (the first branch arm 6121) of the torsion spring has sufficient force, so that the pressure relief part 60 can be tightly matched with the pressure relief hole 11, effectively ensuring the air tightness of the two, ensuring the pumping efficiency of the air pumping device, and also improving the low-pressure state maintaining ability of the low-pressure storage device 1.

[0308] In some embodiments of the present application, the radial size of the first pressure relief plate 621 is denoted as the first radius R1; wherein 35mm≤ R1≤ 55mm.

[0309] When R1< 35mm, R1 is too small, and the size of the pressure relief member 60 mounted on the first pressure relief plate 621 is limited by the size of the first pressure relief plate 621; to ensure the sealing performance of the pressure relief member 60 when sealing the pressure relief hole 11, the hole diameter of the pressure relief hole 11 opened or closed by the pressure relief member 60 is correspondingly reduced; the small hole diameter of the pressure relief hole 11 causes the path of the airflow to be too narrow, resulting in low efficiency of balancing the internal and external air pressures during pressure relief.

[0310] When 55mm < R1, R1 is too large, and the first pressure relief plate 621 blocks too much of the transparent part 40, resulting in a reduced visual area of the transparent part 40, which is not conducive to observing the food materials placed in the low-pressure storage device 1.

[0311] In this application, when 35mm ≤ R1, the hole diameter of the pressure relief hole 11 is sufficient to quickly pass the airflow, thereby improving the efficiency of balancing the internal and external air pressures.

[0312] In this application, when ≤ R1 ≤ 55mm, the blocking area of the transparent part 40 is reduced to ensure the visual area, making it convenient to observe the food materials in the low-pressure storage device 1 through the transparent part 40.

[0313] In this application, the setting of 35mm ≤ R1 ≤ 55mm can on the one hand make the hole diameter of the pressure relief hole 11 sufficient to quickly pass the airflow, thereby improving the efficiency of balancing the internal and external air pressures; on the other hand, it reduces the blocking area of the transparent part 40 to ensure the visual area, making it convenient to observe the food materials in the low-pressure storage device 1 through the transparent part 40.

[0314] In some embodiments of the present application, the radial dimension of the second pressure relief plate 622 is denoted as a second radius R2; wherein 10mm ≤ R2 ≤ 30mm.

[0315] When R2 < 10mm, the radial dimension of the second pressure relief plate 622 is too small, the force arm of the force exerted by the elastic member 61 (torsional spring) on the second pressure relief plate 622 is small, the torque of the elastic member 61 promoting the rotation of the second pressure relief plate 622 is small, and the ability of the elastic member 61 to promote the change in the motion state of the pressure relief fixed part 62 is small.

[0316] When 30mm < R2, the radial dimension of the second pressure relief plate 622 is too large, and during the rotation of the second pressure relief plate 622 to drive the pressure relief member 60 away from the pressure relief hole 11, a larger space in the front-rear direction is required, which requires the door body 4 to reserve sufficient space, resulting in an excessively large thickness of the door body 4.

[0317] When 10mm ≤ R2, the elastic member 61 has sufficient torque to promote the rotation of the second pressure relief plate 622.

[0318] When R2 is less than or equal to 30 mm, the space required for the second pressure relief plate 622 to rotate to drive the pressure relief member 60 away from the pressure relief hole 11 in the front-rear direction is smaller, the space occupied by the door body 4 in the front-rear direction can be reduced, and the thickness of the door body 4 can be reduced. In addition, the size of the shell 2 in the front-rear direction can be increased, and the storage volume of the low-pressure storage device 1 can be increased.

[0319] In the present application, 10 mm≤R2≤30 mm. On the one hand, the elastic member 61 has sufficient torque to rotate the second pressure relief plate 622. On the other hand, when the second pressure relief plate 622 rotates to drive the pressure relief member 60 away from the pressure relief hole 11, the space required for the second pressure relief plate 622 in the front-rear direction is smaller, the space occupied by the door body 4 in the front-rear direction can be reduced, and the thickness of the door body 4 can be reduced. In addition, the size of the shell 2 in the front-rear direction can be increased, and the storage volume of the low-pressure storage device 1 can be increased.

[0320] In some embodiments of the present application, the pressure relief fixing portion 62 includes a reinforcing portion 623. The reinforcing portion 623 connects the first pressure relief plate 621 and the second pressure relief plate 622 to increase the connection strength and the integrity of the first pressure relief plate 621 and the second pressure relief plate 622.

[0321] In some embodiments of the present application, the reinforcing portion 623 is plate-shaped. The reinforcing portion 623 includes a first connecting edge and a second connecting edge. The first connecting edge of the reinforcing portion 623 is connected to the second pressure relief plate 622. The first connecting edge extends in the radial direction of the second pressure relief plate 622 perpendicular to the rotation axis of the second pressure relief plate 622. The second connecting edge of the reinforcing portion 623 is connected to the first pressure relief plate 621. The second connecting edge extends in the radial direction of the first pressure relief plate 621 perpendicular to the rotation axis of the first pressure relief plate 621.

[0322] The reinforcing portion 623 includes a third connecting edge. The third connecting edge connects one end of the first connecting edge away from the rotation axis of the pressure relief fixing portion 62 and one end of the second connecting edge away from the rotation axis of the pressure relief fixing portion 62. The above arrangement allows the reinforcing portion 623 to be arranged in the space between the first pressure relief plate 621 and the second pressure relief plate 622 without increasing the space occupation, thereby avoiding increasing the thickness of the door body 4.

[0323] In some embodiments of the present application, when the door body 4 is closed, the projection of the second pressure relief plate 622 in the plane perpendicular to the height direction contains the projection of the reinforcing portion 623. The above arrangement allows the reinforcing portion 623 to be arranged in the space between the first pressure relief plate 621 and the second pressure relief plate 622 without increasing the space occupation, thereby avoiding further increasing the thickness of the door body 4.

[0324] In some embodiments of the present application, the plurality of reinforcing portions 623 are distributed along the rotating axis of the pressure relief fixing portion 62.

[0325] In some embodiments of the present application, the minimum distance between the first arm 6121 of the torsion spring and the reinforcing portion 623 along the width direction is denoted as the second distance J2. 0mm≤J2≤5mm.

[0326] When 5mm

[0327] In the present application, 0mm≤J1≤5mm, the first arm 6121 of the torsion spring is close to the reinforcing portion 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 portion 623, so as to ensure that the pressure relief member 60 has sufficient force to press the pressure relief hole 11, effectively ensure the air tightness of the cooperation between the two, ensure the air extraction efficiency of the air extraction device, and also improve the low pressure state maintaining ability of the low pressure storage device 1.

[0328] It should be noted that the minimum distance between the first arm 6121 of the torsion spring and the reinforcing portion 623 is the distance between the same reference of the first arm 6121 and the reinforcing portion 623. For example, the distance between the midpoint of the first arm 6121 and the midpoint of the reinforcing portion 623 along the width direction.

[0329] In some embodiments of the present application, the pressure relief fixing portion 62 comprises a rotating column 620. The first pressure relief plate 621 and the second pressure relief plate 622 are arranged along the circumference of the rotating column 620. The rotating column 620 is rotatably connected to the transparent portion 40 of the door body 4.

[0330] In some embodiments of the present application, the elastic member 61 is sleeved on one end of the rotating column 620 along the central axis thereof. For example, when the elastic member 61 is a torsion spring, the torsion spring main body portion 610 is sleeved on the rotating column 620 and located at the end of the rotating column 620.

[0331] In some embodiments of the present application, as shown in Figures 13-15 , Figures 18-21 The pressure relief assembly 6 comprises a transmission connecting portion 63 connected to the pressure relief fixing portion 62. The transmission connecting portion 63 is used to drive the pressure relief fixing portion 62 to move relative to the door body 4, so as to open or close the pressure relief hole 11.

[0332] 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.

[0333] 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.

[0334] 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.

[0335] 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.

[0336] 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.

[0337] 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.

[0338] 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.

[0339] In some embodiments of the present application, the two ends of the rotating column 620 are fixedly connected with the first transmission part 631 on the corresponding side, and the opposite ends of the first pressure relief plate 621 along its rotating axis are fixedly connected with the first transmission part 631 on the corresponding side. The above arrangement enhances the connection strength of the transmission connection part 63 and the pressure relief fixing part 62, and further improves the rotation stability of the pressure relief fixing part 62.

[0340] In some embodiments of the present application, the first transmission part 631 is connected with the handle 53. The handle 53 drives the second locking part 52 to move away from the first locking part 51, and at the same time drives the first transmission part 631 to move. The first transmission part 631 drives the pressure relief fixing part 62 to move, and the pressure relief fixing part 62 drives the pressure relief part 60 to move away from the pressure relief hole 11, so that the gas outside the low-pressure storage device 1 enters its inside through the pressure relief hole 11, reduces the pressure difference between the inside and outside of the low-pressure storage device 1, and facilitates opening of the door body 4. The above arrangement links the pressure relief assembly 6 and the locking assembly 5, so as to perform pressure relief when the door body 4 is opened by the handle 53, which is more convenient and fast.

[0341] In some embodiments of the present application, the transmission connection part 63 includes a second transmission part 632 connecting the first transmission part 631 and the handle 53.

[0342] In some embodiments of the present application, the second transmission part 632 is provided as a connecting groove. The bottom of the connecting groove is connected with the first transmission part 631 away from the side of the groove opening. The handle 53 is installed in the connecting groove. The above second transmission part 632 is provided as a connecting groove, so that the handle 53 is more convenient and fast to install in the connecting groove.

[0343] In some embodiments of the present application, the second transmission part 632 and the first transmission part 631 connected therewith are integrally formed.

[0344] In some embodiments of the present application, the second transmission part 632 is connected with the first transmission part 631 on the corresponding side. It can be provided that each first transmission part 631 is provided with a second transmission part 632 (connecting groove), and is connected with the handle 53 through the second transmission part 632 (connecting groove) connected therewith. The user can drive the handle 53 to move by applying a force to the part of the handle 53 between the two second transmission parts 632, then drive the first transmission part 631 to move through the second transmission part 632, and drive the pressure relief fixing part 62 to move through the first transmission part 631, so as to open or close the pressure relief hole 11 of the pressure relief part 60. At the same time, the second locking part 52 is driven to move by the handle 53, so that the second locking part 52 is locked or unlocked with the first locking part 51.

[0345] In some embodiments of the present application, the second transmission part 632 connects two first transmission parts 631 which are located at opposite ends of the pressure relief fixed part 62 along its rotation axis (central axis). One second transmission part 632 (connecting groove) can be provided to connect the two first transmission parts 631, and then the second transmission part 632 (connecting groove) is connected with the handle 53. The user can drive the handle 53 to move by applying a force to the second transmission part 632 located between the two first transmission parts 631, so as to drive the first transmission part 631 to move through the second transmission part 632, and drive the pressure relief fixed part 62 to move through the first transmission part 631, so as to open or close the pressure relief hole 11 of the pressure relief part 60; at the same time, the second locking part 52 is driven to move by the handle 53, so as to lock or unlock the second locking part 52 with the first locking part 51.

[0346] In the present application, the first transmission part 631 includes a transmission plate 6310. When the transmission plate 6310 is driven to rotate by the second transmission part 632, the transmission plate 6310 drives the pressure relief fixed part 62 to rotate, and the pressure relief part 60 opens or closes the pressure relief hole 11.

[0347] In some embodiments of the present application, the transmission plate 6310 is in the form of a flat plate, which includes a first transmission plate strip 63101, a second transmission plate strip 63102 and a third transmission plate strip 63103 which are connected in sequence.

[0348] The transmission plate 6310 includes a fourth transmission plate strip 63104 located at the connection between the first transmission plate strip 63101 and the third transmission plate strip 63103. The fourth transmission plate strip 63104 is located on the same side of the first transmission plate strip 63101 as the third transmission plate strip 63103. The fourth transmission plate strip 63104 and the first transmission plate strip 63101 form an acute angle.

[0349] The above arrangement of the first transmission part 631 makes the first transmission part 631 occupy a small width space of the door body 4, and the first transmission part 631 has a small shielding area of the transparent part 40 of the door body 4, so as to increase the area of the visual transparent region of the door body 4.

[0350] In some embodiments of the present application, the rotation axis of the rotating column 620 passes through the connection between the second transmission plate strip 63102 and the third transmission plate strip 63103. The end of the fourth transmission plate strip 63104 away from the third transmission plate strip 63103 is fixed with the handle 53 through the second transmission part 632 (connecting groove). When the handle 53 rotates and moves, the handle 53 drives the first transmission part 631 as a whole to rotate around the rotation axis located at the connection between the second transmission plate strip 63102 and the third transmission plate strip 63103 through the fourth transmission plate strip 63104.

[0351] It should be noted that the transmission connection part 63, the pressure relief fixed part 62 and the handle 53 share the rotation axis.

[0352] In some embodiments of the present application, in the planar projection perpendicular to the rotation axis (the rotation axis of the handle 53 / the transmission connection part 63 / the pressure relief fixing part 62), the projection of the first transmission strip 63101 coincides with the projection of the first locking strip 5201; the projection of the second locking strip 5202 contains the projection of the second transmission strip 63102. The above arrangement makes the structure of the locking plate 520 and the transmission plate 6310 more consistent, effectively ensures the movement consistency of 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 to move, and improves the stability of the linkage movement of the pressure relief assembly 6 and the locking assembly 5.

[0353] In some embodiments of the present application, in the planar projection perpendicular to the rotation axis (the rotation axis of the handle 53 / the transmission connection part 63 / the pressure relief fixing part 62), the overall outer contour projection of the first locking strip 5201, the second locking strip 5202 and the third locking strip 5203 contains the overall outer contour projection of the first transmission strip 63101, the second transmission strip 63102 and the third transmission strip 63103. The above arrangement makes the shape consistency of the locking plate 520 and the transmission plate 6310 higher, and fully utilizes the space to avoid the first transmission part 631 from increasing the space occupation and causing the door body 4 to become larger.

[0354] It should be noted that in the foregoing description of the present application, the second transmission part 632 is linked with the handle 53 of the locking assembly 5 to link the pressure relief assembly with the locking assembly 5. In some embodiments of the present application, the second transmission part 632 of the pressure relief assembly 6 is not linked with the handle of the locking assembly 5, so that the pressure relief assembly 6 can work independently and control the pressure relief piece 60 to close or open the pressure relief hole 11. At this time, by applying a force to the second transmission part 632 to make it move, the pressure relief fixing part 62 and the pressure relief piece 60 fixed thereon can be driven by the first transmission part 631 to make the pressure relief piece 60 close or open the pressure relief hole 11.

[0355] In some embodiments of the present application, as shown in Figure 21 , the end of the first pressure relief plate 621 along the rotation axis direction of the handle 53 is connected with the third transmission strip 63103 on the corresponding side. This enhances the connection strength of the transmission connection part 63 and the pressure relief fixing part 62, and further improves the rotation stability of the pressure relief fixing part 62.

[0356] In the present application, the area of the pressure relief assembly 6 occupying the transparent part 40 of the door body 4 is limited to increase the visualization area for observing the storage container 3 through the transparent part 40. And the pressure relief assembly 6 is linked with the locking assembly 5 through the transmission connection part 63, so that the pressure relief can be performed at the same time when the door body 4 is opened through the handle 53, which is convenient and fast to operate.

[0357] In some embodiments of the present application, the door body 4 comprises a shielding portion 41. The shielding portion 41 is used to shield the pressure relief assembly 6 arranged on the door body 4. The storage opening 21 is covered by the transparent portion 40, and the shielding portion 41 is arranged on the side of the transparent portion 40 away from the storage container 3 to shield the pressure relief assembly 6.

[0358] In some embodiments of the present application, the transparent portion 40 is formed with a containing portion 45 protruding towards the side of the storage container 3. The pressure relief assembly 6 is accommodated in the containing portion 45. The shielding portion 41 is connected with the containing portion 45 to shield the pressure relief assembly 6 located in the containing portion 45.

[0359] In some embodiments of the present application, the containing 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 along the width direction of the door body 4. The above arrangement makes the handle 53 more stable in driving the second locking portion 52 to move while driving the pressure relief member 60 to move through the transmission connecting portion 63.

[0360] It should be noted that the pressure relief assembly 6 is arranged as described above, and will not be described again here.

[0361] In some embodiments of the present application, along the width direction (the direction of the rotation axis of the pressure relief fixing portion), the size of the shielding portion 41 is denoted as a first width size Z1, and the size of the door body 3 is denoted as a second width size Z2. Wherein, 0.1≤Z1:Z2≤0.5.

[0362] When Z1:Z2<0.1, the width size occupied by the shielding portion 41 is too small, and the width size of the pressure relief assembly 6 is too small, resulting in that the strength of the pressure relief assembly 6 is too low.

[0363] When 0.5

[0364] In the present application, 0.1≤Z1:Z2 makes the pressure relief assembly 6 have sufficient strength to ensure the effective action of the pressure relief assembly 6.

[0365] In the present application, the setting of Z1:Z2≤0.5 limits the area of the transparent portion 40 shielded by the shielding portion 41, increases the visualization area of the transparent portion 40 corresponding to the storage opening 21, and facilitates the user to observe the food materials in the low-pressure storage device 1.

[0366] In the present application, the setting of 0.1≤Z1:Z2≤0.5 on the one hand makes the pressure relief assembly 6 have sufficient strength to ensure the effective action of the pressure relief assembly 6. On the other hand, the area of the transparent part 40 blocked by the blocking part 41 is limited, the visualization area of the transparent part 40 corresponding to the storage port 21 is increased, and the user can observe the food materials in the low-pressure storage device 1 more conveniently.

[0367] In some embodiments of the present application, as shown in Figures 22-23 , the size of the blocking part 41 in the height direction (in the direction perpendicular to the bottom plate of the storage container 3) is denoted as the first height size H1; the size of the transparent visual area above the blocking part 41 is denoted as the second height size H2. Wherein, 1≤H1: H2≤3.

[0368] When H1: H2<1, the height occupied by the blocking part 41 is too small, and the height of the pressure relief assembly 6 is too small, resulting in that the strength of the pressure relief assembly 6 is too low.

[0369] When 3<H1: H2, the height occupied by the blocking part 41 is too large, the blocked area of the transparent part 40 is too large, the visualization area of the transparent part 40 corresponding to the storage port 21 is reduced, and it is not conducive to observe the food materials in the low-pressure storage device 1.

[0370] In the present application, 1≤H1: H2 makes the pressure relief assembly 6 have sufficient strength to ensure the effective action of the pressure relief assembly 6.

[0371] In the present application, the setting of H1: H2≤3 limits the area of the transparent part 40 blocked by the blocking part 41, increases the visualization area of the transparent part 40 corresponding to the storage port 21, and facilitates the user to observe the food materials in the low-pressure storage device 1.

[0372] In the present application, the setting of 1≤H1: H2≤3 on the one hand makes the pressure relief assembly 6 have sufficient strength to ensure the effective action of the pressure relief assembly 6. On the other hand, the area of the transparent part 40 blocked by the blocking part 41 is limited, the visualization area of the transparent part 40 corresponding to the storage port 21 is increased, and the user can observe the food materials in the low-pressure storage device 1 more conveniently.

[0373] It should be noted that the transparent visual area above the blocking part 41 refers to the area that belongs to the transparent part 40 but is not blocked and can observe the internal space of the storage container 3.

[0374] In some embodiments of the present application, as shown in Figure 15 , 22The transparent part 40 is provided with a locking connector 43 at opposite ends in the width direction, and the second locking part 52 is fixedly connected to the door body 4 through the locking connector 43. The door body 4 comprises a first shielding part 42 provided at opposite ends in the width direction of the transparent part 40, for shielding the corresponding locking connector 43, to increase the overall fitting degree and aesthetic appearance of the door body 4.

[0375] In some embodiments of the present application, the first shielding part 42 shields the sealing element 7 at the corresponding position while shielding the locking connector 43, to increase the overall fitting degree and aesthetic appearance of the door body 4.

[0376] In some embodiments of the present application, as shown in FIG. Figures 22-23 The door body 4 comprises a second shielding part 44. The second shielding part 44 is arranged at the upper end of the door body 4, for shielding the first sealing part 71 of the sealing element 7, to increase the overall fitting degree and aesthetic appearance of the door body 4.

[0377] In some embodiments of the present application, the second shielding part 44 is arranged at the lower end of the door body 4, for shielding the third sealing part 73 of the sealing element 7.

[0378] In some embodiments of the present application, the third sealing part 73 is located at the lower end of the door body 4, and the third sealing part 73 is easily observed, which does not affect the overall aesthetic appearance of the door body 4, and the second shielding part 44 is not needed.

[0379] In some embodiments of the present application, the third sealing part 73 is located at the lower end of the door body 4, and the third sealing part 73 is shielded by the handle 53 in the locked state; the above third sealing part 73 does not affect the overall aesthetic appearance of the door body 4, and the second shielding part 44 is not needed.

[0380] In some embodiments of the present application, in the projection in the plane perpendicular to the width direction, the front surface of the door body 4 as a whole is in a curved shape protruding away from the storage container 3. As a settable manner, in the projection in the plane perpendicular to the width direction, the front surface of the door body 4 as a whole is in an arc shape protruding away from the storage container 3. The above setting can increase the area of the door body 4 in contact with the external environment, to increase the pressure bearing capacity of the door body 4 and improve the anti-deformation ability of the door body 4.

[0381] In some embodiments of the present application, the transparent part 40 cooperates with the first mounting part 34 on the storage container 3 to fixedly connect the storage container 3 and the door body 4. The pressure relief hole 11 penetrates the transparent part 40 and is blocked by the first mounting part 34. That is, the pressure relief hole 11 is arranged in the region where the transparent part 40 cooperates with the first mounting part 34, so that the first mounting part 34 blocks the pressure relief hole 11, so that the pressure relief hole 11 cannot be observed from the inside of the storage container 3, realizing the hidden arrangement of the pressure relief hole 11; avoiding that the article placed in the storage container 3 blocks the pressure relief hole 11, causing the pressure relief to be unable to be normally or efficiently performed; and also ensuring that the pressure relief hole is effectively sealed when vacuumizing, ensuring the air extraction efficiency of the air extraction device, and also improving the low-pressure state maintaining capability of the low-pressure storage device.

[0382] In some embodiments of the present application, the pressure relief hole 11 is in communication with the internal space of the low-pressure storage device 1 through the cooperation gap between the first mounting part 34 and the transparent part 40.

[0383] In some embodiments of the present application, as shown in Figure 5 , Figures 24-27 The first mounting part 34 comprises a first supporting part 341. The first supporting part 341 comprises a supporting groove bottom 3410, a first supporting groove wall 3411, and a second supporting groove wall 3412. The supporting groove bottom 3410 is arranged along the height direction. Optionally, the supporting groove bottom 3410 is parallel to the plane where the storage port 21 is located.

[0384] The first supporting groove wall 3411 and the second supporting groove wall 3412 are located on the side of the supporting groove bottom 3410 close to the door body 4. The first supporting groove wall 3411 is connected to the top end of the supporting groove bottom 3410, and the second supporting groove wall 3412 is connected to the bottom end of the supporting groove bottom 3410. The first supporting groove wall 3411, the supporting groove bottom 3410, and the second supporting groove wall 3412 are sequentially connected to define a supporting groove.

[0385] In some embodiments of the present application, the first connecting piece 3413 is arranged in the supporting groove. The first connecting piece 3413 is sequentially connected to the first supporting groove wall 3411, the supporting groove bottom 3410, and the second supporting groove wall 3412 to strengthen the overall strength of the supporting groove.

[0386] In some embodiments of the present application, a plurality of first connecting pieces 3413 are distributed at intervals along the extension direction (width direction) of the supporting groove.

[0387] In some embodiments of the present application, the first mounting part 34 comprises a first assembly part 342. The first assembly part 342 comprises a first cooperation plate 3421, a second cooperation plate 3422, and a third cooperation plate 3423. The second cooperation plate 3422 is arranged along the height direction. Optionally, the second cooperation plate 3422 is parallel to the plane where the storage port 21 is located.

[0388] The first fitting plate 3421 and the third fitting plate 3423 are located on the side of the second fitting plate 3422 close to the door body 4. The first fitting plate 3421 is connected to the top end of the second fitting plate 3422, and the third fitting plate 3423 is connected to the bottom end of the second fitting plate 3422.

[0389] In some embodiments of the present application, the height of the second fitting plate 3422 is greater than the height of the support groove bottom 3410. The first fitting plate 3421 is located above the first support groove wall 3411. The above makes the first support part 341 and the first assembly part 342 misaligned in the height direction to cooperate with the door body 4, thereby enhancing the connection stability of the door body 4 and the storage container 3.

[0390] In some embodiments of the present application, in the front-rear direction, the second fitting plate 3422 is located on the rear side of the support groove bottom 3410. The above makes the first support part 341 and the first assembly part 342 misaligned in the front-rear direction to cooperate with the door body 4, thereby enhancing the connection stability of the door body 4 and the storage container 3. The above misalignment of the first support part 341 and the first assembly part 342 in the front-rear direction to cooperate with the door body 4 also limits the relative position of the door body 4 and the storage container 3 in the width direction, thereby enhancing the connection stability of the door body 4 and the storage container 3 in the width direction.

[0391] In some embodiments of the present application, the upper surface of the third fitting plate 3423 is coplanar with the upper surface of the second support groove wall 3412. The lower surface of the third fitting plate 3423 is coplanar with the lower surface of the second support groove wall 3412. The above arrangement makes the third fitting plate 3423 and the second support groove wall 3412 have integrity and integrity, effectively increasing the overall strength of the first support part 341 and the first assembly part 342.

[0392] In some embodiments of the present application, the upper surface of the third fitting plate 3423, the upper surface of the second support groove wall 3412, and the upper surface of the storage bottom plate 30 are coplanar. The lower surface of the third fitting plate 3423, the lower surface of the second support groove wall 3412, and the lower surface of the storage bottom plate 30 are coplanar. The above arrangement makes the third fitting plate 3423, the second support groove wall 3412, and the storage bottom plate 30 have integrity and integrity, effectively ensuring the overall strength of the storage container 3.

[0393] In some embodiments of the present application, the first support part 341 and the first assembly part 342 are arranged adjacent to each other.

[0394] In some embodiments of the present application, two first support parts 341 are located on opposite sides of the first assembly part 342. The above arrangement increases the misalignment section of the relative misalignment restriction, thereby enhancing the connection stability of the door body 4 and the storage container 3.

[0395] In some embodiments of the present application, the second fitting plate 3422 is located on the side of the support groove bottom 3410 away from the door body 4. In the width direction, the second fitting plate 3422 is provided with a first connecting plate 3424 near the end of the support groove bottom 3410, and the first connecting plate 3424 connects the second fitting plate 3422, the support groove bottom 3410 adjacent to the second fitting plate 3422, and the first support groove wall 3411. The above arrangement increases the integrity of the first support part 341 and the first assembly part 342 to increase the connection strength, thereby improving the assembly strength of the door body 4 and the storage container 3.

[0396] In some embodiments of the present application, the first fitting plate 3421 is provided at the top end of the first connecting plate 3424. The first fitting plate 3421 provided at the top end of the second fitting plate 3422 is connected with the first fitting plate 3421 provided at the top end of the first connecting plate 3424. The first fitting plate 6421 connects the first connecting plate 6424 and the second fitting plate 3422 into one body, thereby strengthening the integrity and firmness of the first assembly part 342.

[0397] In some embodiments of the present application, the first assembly part 342 includes a second connecting piece 3425, which sequentially connects the first fitting plate 3421, the second fitting plate 3422, and the third fitting plate 3423 to strengthen the overall strength of the first assembly part 342.

[0398] In some embodiments of the present application, a plurality of second connecting pieces 3425 are distributed at intervals in the width direction.

[0399] In some embodiments of the present application, referring to Figures 6-7 , Figure 21 The door body 4 includes a second mounting part 46. The second mounting part 46 is used to cooperate with the first mounting part 34 on the storage container 3 to connect the door body 4 and the storage container 3.

[0400] In some embodiments of the present application, the second mounting part 46 is formed on the transparent part 40 of the door body 4.

[0401] In some embodiments of the present application, the second mounting part 46 includes a second support part 461. The second support part 461 includes first support plates 4611 and second support plates 4612 arranged at intervals. The first support plates 4611 and the second support plates 4612 extend in the width direction. Among them, in the height direction, the first support plates 4611 are located above the second support plates 4612.

[0402] In some embodiments of the present application, the second mounting portion 46 comprises a second assembly portion 462. The second assembly portion 462 comprises a first assembly plate 4621, a second assembly plate 4622 and a third assembly plate 4623 connected in sequence. The second assembly plate 4622 is arranged along the height direction, and 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 close 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.

[0403] In some embodiments of the present application, the second support portion 461 is arranged adjacent to the second assembly portion 462.

[0404] In some embodiments of the present application, the two second support portions 461 are located on opposite sides of the second assembly portion 462.

[0405] In some embodiments of the present application, along the height direction, the third assembly plate 4623 of the second assembly portion 462 is located above the second support plate 4612 of the second support portion 461. Along the height direction, the third assembly plate 4623 is located above the second support plate 4612, and the third assembly plate 4623 of the second assembly portion 462 and the second support plate 4612 of the second support portion 461 together define an assembly channel extending along the width direction.

[0406] In some embodiments of the present application, the second assembly plate 4622 has a mounting channel between the adjacent first support plate 4611 and / or second support plate 4612.

[0407] In some embodiments of the present application, the second assembly portion 462 comprises a fourth assembly plate 4624 located on the side of the second assembly plate 4622 away from the storage container 3 and connected to the first assembly plate 4621, the second assembly plate 4622 and the third assembly plate 4623. The fourth assembly plate 4624 and the end of the adjacent first support plate 4611 define a mounting channel.

[0408] In some embodiments of the present application, the pressure relief hole 11 penetrates the second assembly plate 4622.

[0409] In some embodiments of the present application, the first assembly plate 4621, the second assembly plate 4622, the third assembly plate 4623 and the fourth assembly plate 4624 are all part of the receiving portion 45 that defines the accommodation of the pressure relief assembly 6. That is, the receiving portion 45 comprises the second assembly portion 462.

[0410] In some embodiments of the present application, as Figures 28-31The door body 4 includes a first limiting part 47 near the top of the door body 4. The first limiting part 47 is used to cooperate with the top plate of the shell 2 to limit the deformation of the shell 2 in the height direction, so as to avoid the shell 2 from being damaged due to excessive deformation during vacuumizing.

[0411] In some embodiments of the present application, the accommodating part 45 includes the first limiting part 47.

[0412] In some embodiments of the present application, the first limiting part 47 is located above the second assembly part 462. In this way, the first limiting part 47 and the second assembly part 462 have better force transmission performance in the height direction.

[0413] In some embodiments of the present application, as shown in Figure 13 , Figure 29 The door body 4 is provided with a second limiting part 48 extending in the height direction. The second limiting part 48 can effectively limit the deformation of the door body 4 in the height direction, so as to avoid the shell 2 from being damaged due to excessive deformation during vacuumizing. In this way, the deformation of the shell 2 in the height direction is further limited by the cooperation of the door body 4 and the container 3 in the height direction during the air extraction of the air extraction device, so as to avoid the shell 2 from being damaged due to excessive deformation during vacuumizing. In some embodiments of the present application, the second limiting part 48 extending in the height direction is arranged above the area of the transparent part 40 of the door body 4 relative to the pressure relief assembly 6.

[0414] In some embodiments of the present application, the second limiting part 48 connects the first limiting part 47 and the first assembly plate 4621, so as to strengthen the force transmission performance of the first limiting part 47 and the second assembly part 462 in the height direction, effectively limit the deformation of the shell 2, and avoid the shell 2 from being damaged due to excessive deformation during vacuumizing.

[0415] In some embodiments of the present application, a plurality of second limiting parts 48 are distributed in the width direction.

[0416] In some embodiments of the present application, the second limiting part 48 is arranged in a flat plate shape.

[0417] In some embodiments of the present application, as shown in Figures 28-31 When the door body 4 is connected with the container 3, the first support groove wall 3411 on the container 3 cooperates with the first support plate 4611 on the door body 4. The first support groove wall 3411 on the container 3 is located below the first support plate 4611 on the door body 4.

[0418] The second support groove wall 3412 on the container 3 cooperates with the second support plate 4612 on the door body 4. The second support groove wall 3412 on the container 3 is located above the second support plate 4612 on the door body 4.

[0419] The first matching plate 3421 on the storage container 3 matches the first assembly plate 4621 on the door body 4. The first matching plate 3421 is located on the lower side of the first assembly plate 4621.

[0420] The third matching plate 3423 on the storage container 3 matches the third assembly plate 4623 on the door body 4. The third matching plate 3423 is located on the lower side of the third assembly plate 4623. The third matching plate 3423 is located in the assembly channel defined by the third assembly plate 4623 and the second support plate 4612.

[0421] The above arrangement allows the storage container 3 and the door body 4 to interact and support each other in the height direction when connected. The vacuum device performs air extraction, and due to the internal and external pressure difference, the shell 2 deforms. Through the cooperation of the door body 4 and the storage container 3 in the width direction, the deformation amount of the shell 2 in the width direction can be limited, avoiding the shell 2 from being damaged due to excessive deformation during vacuuming.

[0422] 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 limited between the first support plate 4611 and the second matching plate 3422 (the fourth assembly plate 4624) to limit the relative position of the storage container 3 and the door body 4 in the width direction.

[0423] The above arrangement allows the storage container 3 and the door body 4 to interact in the width direction when connected. The vacuum device performs air extraction, and due to the internal and external pressure difference, the shell 2 deforms. Through the cooperation of the door body 4 and the storage container 3 in the width direction, the deformation amount of the shell 2 in the width direction can be limited, avoiding the shell 2 from being damaged due to excessive deformation during vacuuming.

[0424] In some embodiments of the present application, when the door body 4 is connected to the storage container 3, the upper surface of the first matching plate 3421 on the storage container 3 is used to match the lower surface of the first assembly plate 4621 on the door body 4. The first matching plate 3421 on the storage container 3 is located on the side of the second matching plate 3422 close to the door body 4. The second matching plate 3422 is arranged opposite to the second assembly plate 4622, so that there is a spacing channel 49 between the second matching plate 3422 on the storage container 3 and the second assembly plate 4622 on the door body 4. The pressure relief hole 11 is provided on the second assembly plate 4622 and communicates with the spacing channel 49. The pressure relief hole 11 is blocked by the second matching plate 6422, so that the pressure relief hole 11 is hidden by the storage container 3, avoiding the pressure relief hole being blocked (avoiding the items placed in the storage container blocking the pressure relief hole), which causes the pressure relief to be unable to be normal or efficient.

[0425] In some embodiments of the present application, the second support groove wall 3412 is provided with a vent hole 10, which is used to connect the pressure relief hole 11 on the door body 4 with the internal space of the low-pressure storage device 1 when the door body 4 is closed. As described above, when the door body 4 is connected with 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 second support groove wall 3412 on the storage container 3 cooperates with the second support plate 4612 on the door body 4. A ventilation passage is formed between the support groove bottom 3410 and the transparent part 40. The ventilation passage is connected with the spacing passage 49, so that the vent hole 10 on the second support groove wall 3412 is connected with the spacing passage 49 through the ventilation passage. This makes the pressure relief hole 11 on the door body 4 connected with the internal space of the low-pressure storage device 1 through the vent hole 10 on the second support groove wall 3412, so that the connectivity between the pressure relief hole 11 on the door body 4 and the internal space of the low-pressure storage device 1 is better when the door body 4 is closed, and the pressure relief efficiency is improved.

[0426] In some embodiments of the present application, the third cooperation plate 3423 is provided with a vent hole 10, which is connected with the spacing passage 49. At the same time, the pressure relief hole 11 is connected with the spacing passage 49, so that the connectivity between the pressure relief hole 11 on the door body 4 and the internal space of the low-pressure storage device 1 is better when the door body 4 is closed, and the pressure relief efficiency is improved.

[0427] In some embodiments of the present application, the storage bottom plate 30 of the storage container 3 is provided with a blocking piece 8. The vacuumizing device performs air extraction, and the shell 2 deforms due to the pressure difference between the inside and outside. Through the cooperation of the door body 4, the storage container 3, and the blocking piece 8 in the height direction, the deformation amount of the shell 2 in the height direction can be limited, so as to avoid the shell 2 from being damaged due to excessive deformation during vacuumizing.

[0428] In the present application, in the state that the door body 4 is closed, the air extraction device performs air extraction on the low-pressure storage device 1, and the air pressure in the low-pressure storage device 1 decreases. Under the action of 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 amount of the shell top plate, so as to avoid the shell 2 from being damaged due to excessive deformation during vacuumizing. The blocking piece 8 is located between the storage bottom plate 30 of the storage container 3 and the bottom plate of the shell 2, so as to limit the upward deformation amount of the bottom plate of the shell 2, so as to avoid the shell 2 from being damaged due to excessive deformation during vacuumizing. The storage container 3 and the door body 4 are connected as a whole through the cooperation of the first mounting part 34 and the second mounting part 46, so that the force in the height direction of the low-pressure storage device 1 is transmitted between the storage container 3 and the door body 4. The overall drawer unit of the storage container 3 and the door body 4 can effectively limit the deformation amount of the shell 2 in the height direction, so as to avoid the shell 2 from being damaged due to excessive deformation during vacuumizing.

[0429] In some embodiments of the present application, the barrier 8 is arranged in a grid shape. In the projection of the storage bottom plate 30, the projected contour of the barrier 8 contains the projections of the air holes 10 arranged on the third matching plate 3423 and / or the second support groove wall 3412. The above arrangement can avoid the sundries falling into the shell 2 from blocking the air holes 10 arranged on the third matching plate 3423 and / or the second support groove wall 3412, so as to ensure the connectivity of the air holes 10.

[0430] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0431] For the convenience of explanation, the above description has been made in combination with specific embodiments. However, the above exemplary discussion is not intended to exhaust or limit the embodiments to the specific forms disclosed above. Various modifications and variations can be derived according to the above teachings. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified 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 capable of being pulled out of or pushed into the housing through the storage opening; a door body located on a side of the storage container away from a rear wall of the housing, used for opening or closing the storage opening; a sealing element provided on one of the housing and the door body; when the storage container is in a pushed-in state, the sealing element is in contact with the other one of the housing and the door body; the sealing element comprises: a receiving portion extending along the width direction of the low-pressure storage device; the receiving portion is located on the upper side of the storage container and is used for collecting condensate water located above the receiving portion; two water guide portions respectively connected to the two ends of the receiving portion along the width direction of the low-pressure storage device, used for guiding the condensate water collected by the receiving portion downward; a water collecting portion connected to the ends of the two water guide portions away from the receiving portion; wherein a plane passing through the midpoint of the water guide portion in the height direction and perpendicular to the height direction of the low-pressure storage device is defined as a first reference plane P1; along the width direction of the low-pressure storage device, the distance between the receiving portion and the first reference plane P1 first increases and then decreases, so as to guide the condensate water collected by the receiving portion to the two water guide portions; along the width direction of the low-pressure storage device, the distance between the water collecting portion and the first reference plane P1 first increases and then decreases, so as to guide the condensate water guided by the two water guide portions to the middle region of the water collecting portion along the width direction of the low-pressure storage device.

2. The cold storage device according to claim 1, wherein: the maximum point of the distance between the receiving portion and the first reference plane P1 is defined as a first convex point A1; the end of the receiving portion connected to one of the water guide portions is defined as a first connecting end, and the end connected to the other water guide portion is defined as a second connecting end; Wherein, along the width direction of the low-pressure storage device, the distance between the first convex point A1 and the first connecting end is recorded as D 11 ; the distance between the first convex point A1 and the second connecting end is recorded as D 12 ; wherein 0.8≤D 11 : D 12 ≤1.

2.

3. The cold appliance of claim 1 or 2, characterized in that the receiving portion comprises a first fitting portion and a first abutting portion distributed in the front-rear direction of the low-pressure storage device and extending along the width direction of the low-pressure storage device; the side of the first fitting portion close to the first abutting portion is provided with a plurality of first positive support portions; wherein the plurality of first positive support portions are distributed in the width direction of the low-pressure storage device; the side of the first abutting portion close to the first fitting portion is provided with a first negative support portion consistent with the extension direction of the first abutting portion; when the door body is closed, the door body and the housing jointly extrude the receiving portion, and the first positive support portion cooperates with the first negative support portion.

4. The cold appliance of claim 3, characterized in that the receiving portion has an upward opening and a water receiving bottom wall opposite to the opening; along the direction from the opening of the receiving portion to the water receiving bottom wall, the cross-sectional area of the first positive support portion perpendicular to the direction gradually decreases.

5. The cold appliance of claim 3, characterized in that along the direction from the opening of the receiving portion to the water receiving bottom wall, the distance between adjacent two first positive support portions gradually increases.

6. The refrigerator according to claim 4 or 5, characterized in that, The maximum distance between the plane in which the opening of the receiving portion is located and the water receiving bottom wall in a direction pointing from the plane in which the opening of the receiving portion is located to the water receiving bottom wall is denoted as L 11 ; the first positive support portion extends in a direction pointing from the plane in which the opening of the receiving portion is located to the water receiving bottom wall, and the length of the first positive support portion in the direction is denoted as L 12 ; wherein 0.4≤L 12 : L 11 ≤0.

8.

7. The cold appliance of claim 1 or 2, characterized by a distance between the water collecting portion and the first reference surface P1 is the largest at a third convex point A3; an end of the receiving portion connected with one of the water guiding portions is a first transition end, and an end connected with the other water guiding portion is a second transition end; The distance between the third convex point A3 and the first adapter end is recorded as D along the width direction of the low-pressure storage device 31 ; and the distance between the third convex point A3 and the second adapter end is recorded as D 32 ; wherein 0.8≤D 31 : D 32 ≤1.

2.

8. The refrigerator according to claim 1 or 2 or 4 or 5, characterized in that, the water collecting portion comprises a third matching portion and a third fitting portion distributed along the front-rear direction of the low-pressure storage device and extending along the width direction of the low-pressure storage device; a plurality of third positive support portions are arranged on a side of the third matching portion close to the third fitting portion, and the third positive support portions are distributed along the width direction of the low-pressure storage device; a third negative support portion is arranged on a side of the third fitting portion close to the third matching portion, and the third negative support portion is consistent with the extending direction of the third fitting portion; when the door body is closed, the door body and the shell jointly press the receiving portion, and the third positive support portion cooperates with the third negative support portion.

9. The refrigerator according to claim 8, characterized in that, the water collecting portion has an opening facing downward, and a water collecting bottom wall opposite to the opening; the distance between two adjacent third positive support portions gradually increases in a direction from the plane where the opening of the water collecting portion is located to the water collecting bottom wall.

10. A cold appliance, characterized by including: a cabinet defining a storage chamber; a low-pressure storage device accommodated in the storage chamber; an air extraction device for extracting air in the low-pressure storage device, so that a lower air pressure than the atmospheric pressure outside the cabinet is formed in the low-pressure storage device; 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; a door body located on a side of the storage container away from a rear wall of the shell, for opening or closing the storage opening; a sealing element arranged on one of the shell and the door body; when the storage container is in a pushed-in state, the sealing element is fitted to the other one of the shell and the door body, and surrounds the storage opening and a center of the sealing element O; the sealing element comprises: a first sealing portion located above the storage container and extending along the width direction of the low-pressure storage device; the first sealing portion protrudes away from the center O; a third sealing portion located below the storage container and extending along the width direction of the low-pressure storage device; the third sealing portion protrudes away from the center O; a second sealing portion connecting the same end of the first sealing portion and the third sealing portion along the width direction of the low-pressure storage device; a fourth sealing portion connecting the other end of the first sealing portion and the third sealing portion along the width direction of the low-pressure storage device; a flow guiding portion formed on the first sealing portion, the second sealing portion, the third sealing portion and the fourth sealing portion; the extending trend of the flow guiding portion is consistent with the extending trend of the sealing portion where the flow guiding portion is located, and the flow guiding portion is used for guiding condensate water on the sealing portion.

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