Refrigerating apparatus

Abstract

The application discloses a refrigeration device, which comprises a cabinet, a low-pressure storage device, and a suction device; the low-pressure storage device comprises a shell, a storage container, a door frame defining a window opening, a door body comprising a transparent part, and a pressure relief assembly; the transparent part comprises a perspective part protruding away from the storage container, the perspective part corresponds to the window opening, and is used for making the internal space of the storage container visible through the perspective part; and a locking piece is shielded by a lower frame of the door frame; the visible area of the refrigeration device is large and has integrity and continuity, and the user can conveniently check the state of the stored articles.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and more particularly to a refrigeration device. Background Technology

[0002] As consumers demand higher quality fresh food, their requirements for refrigerators are also increasing. They need refrigerators with better configurations and more powerful functions, especially hoping that the stored fresh food can have a longer shelf life to ensure the freshness of the ingredients and prevent the loss of nutrients.

[0003] To better preserve food, vacuum storage devices have been developed for refrigerators. These devices remove oxygen from the interior of the refrigerator to prevent food spoilage and ensure freshness.

[0004] To facilitate users' viewing of the food inside the vacuum storage device and reduce the frequency of users opening and closing the vacuum storage device and the number of times the vacuuming device needs to vacuum, the door of the vacuum storage device is now made transparent, allowing users to observe the state of the stored items inside the vacuum storage device without opening it.

[0005] However, the door of the vacuum storage device is obstructed by a component located on its front side, which divides the visible area of ​​the door into multiple areas, making it difficult for users to check the status of the stored items without opening the door. Summary of the Invention

[0006] This application provides a refrigeration device with a large, continuous, and integrated low-pressure storage area, which facilitates users in observing the status of the stored items.

[0007] In a first aspect, a refrigeration device is provided, comprising:

[0008] The enclosure defines the storage space;

[0009] A low-pressure storage device, which is housed within the storage chamber;

[0010] A vacuum device for removing gas from the low-pressure storage device;

[0011] The low-pressure storage device includes:

[0012] case;

[0013] The storage container can be pulled out or pushed into the housing;

[0014] The door body includes:

[0015] A transparent portion, one side of which is connected to the storage container; the transparent portion includes:

[0016] A perspective section protrudes from the side away from the container, allowing the interior space of the container to be seen through the perspective section;

[0017] A door frame that mates with the transparent portion; the door frame defines a viewing window opening that corresponds to the perspective portion;

[0018] A pressure relief assembly is used to relieve pressure on a low-pressure storage device after the gas has been extracted by the extraction device; the pressure relief assembly is obscured by the lower frame of the door frame.

[0019] In the aforementioned technical solution, the door frame and the transparent section work together. The door frame blocks the circumferential area of ​​the transparent section near the edge, creating a large, continuous, and integrated viewing area. This allows users to easily observe the food inside the container through the viewing window and the corresponding transparent area. Furthermore, the pressure relief component is concealed by the door frame, ensuring the viewing area remains unobstructed and maintaining its integrity and continuity. This also allows users to easily observe the food inside. Additionally, the pressure relief component is protected from external influences, resulting in a cleaner door appearance.

[0020] In some embodiments, the surface of the transparent portion near the storage container is referred to as the first surface B1; the first surface B1 protrudes to the side away from the storage container.

[0021] In the above technical solution, the first surface B1 protrudes to the side away from the storage container, so as to form a curved surface on the side of the door body close to the inner cavity of the storage container, thereby increasing the contact area between the door body and the storage chamber of the low-pressure storage device; under the same pressure, the pressure borne by the door body is reduced, thereby improving the pressure-bearing capacity and deformation resistance of the door body.

[0022] In some embodiments, the surface of the transparent portion away from the storage container is referred to as the second surface B2; the second surface B2 protrudes to the side away from the storage container.

[0023] The above technical solution increases the observation area for viewing the interior of the storage container from the outside of the low-pressure storage device, increasing the number of observation points and providing convenience for users. In addition, it increases the contact area between the door and the external environment of the low-pressure storage device; under the same pressure, the pressure exerted on the door near the outside of the low-pressure storage device is reduced, improving the door's pressure-bearing capacity and resistance to deformation.

[0024] In some embodiments, at least a portion of the transparent portion protrudes to the side of the plane where the viewing window opening is located that is away from the storage container;

[0025] The plane containing the opening of the view window is denoted as the view window plane P;

[0026] The point at which the distance between the second surface B2 of the perspective section and the viewing window plane P is the maximum is denoted as the first point a;

[0027] The distance between the first point a and the viewport plane P is denoted as the first distance J; where 2mm≤J≤7mm.

[0028] In the above technical solution, when J < 2mm, the protrusion of the viewing element from the side of the door frame furthest from the container is too small, increasing the gap between the door frame and the viewing element, which affects the overall appearance and aesthetics of the door. Furthermore, the increased gap between the door frame and the viewing element makes it easier for dust and debris to accumulate, affecting the cleanliness of the door.

[0029] When J > 7mm, the visible portion protrudes excessively from the door frame on the side furthest from the storage container. This results in a noticeably convex surface on the visible portion of the door, reducing the aesthetic compatibility between the low-pressure storage unit and other devices placed inside the refrigerator. It also increases the overall clutter in the arrangement of all devices within the refrigerator, including the low-pressure storage unit. Furthermore, it increases the door's thickness. With a fixed refrigerator depth, increased door thickness leads to a decreased outer shell depth, resulting in a smaller storage container volume and consequently, less storage space for the low-pressure storage unit.

[0030] When 2mm ≤ J ≤ 7mm, the gap between the door frame and the viewing area is reduced, increasing the overall appearance and aesthetics of the door and reducing dust and debris accumulation, thus improving the cleanliness of the door. It also ensures a high degree of visual compatibility between the low-pressure storage unit and other devices placed inside the refrigerator, enhancing their suitability and improving the neatness and aesthetics of the arrangement of all devices, including the low-pressure storage unit. Furthermore, limiting the space occupied by the door ensures sufficient storage space for the low-pressure storage unit.

[0031] In some embodiments, the transparent portion is located on the side of the plane where the viewing window opening is located, closer to the storage container;

[0032] The door includes a viewing window; the viewing window is located at the opening of the viewing window.

[0033] The aforementioned technical solution utilizes a transparent section (viewing section) and a viewing window to allow the contents placed inside the storage container to be seen through both. This enables users to observe the condition of the food inside the low-pressure storage device without opening it, further enhancing user convenience. Simultaneously, it reduces the frequency of opening and closing the low-pressure storage device, thereby reducing the frequency of evacuation of the drawer, extending the lifespan of the vacuum drawer, preventing increased energy consumption, and ensuring the vacuum preservation effect of the food. Furthermore, the viewing window fits more tightly with the door frame, reducing the accumulation of dust and debris. Moreover, the window's fit with the door frame also shields the viewing section from external influences.

[0034] In some embodiments, the window portion cooperates with the door frame to define a front surface of the door located on the side away from the storage container;

[0035] The surface with the largest distance between the front surface of the door and the rear wall of the housing is denoted as the third surface B3, and the third surface B3 is a plane.

[0036] In the above technical solution, the viewing window cooperates with the door frame, defining the third surface B3, which has the largest distance between the door body and the rear wall of the housing, as the frontmost front surface of the door body. By setting the third surface B3 as a plane, the frontmost front surface of the door body is also a plane, resulting in a high degree of visual compatibility between the low-pressure storage device and other devices placed inside the refrigerator. This improves the adaptability of the low-pressure storage device to other devices inside the refrigerator and increases the neatness and aesthetics of the arrangement of all devices inside the refrigerator, including the low-pressure storage device.

[0037] In some embodiments, the door frame includes a lower border located below the window opening; the transparent portion and the lower border cooperate to define a receiving cavity;

[0038] The low-pressure storage unit includes a pressure relief assembly; the pressure relief assembly includes:

[0039] A pressure relief channel is used to connect the inner and outer sides of the low-pressure storage device; the pressure relief channel includes:

[0040] The pressure relief port, facing away from the storage container, is used to connect to the outside of the low-pressure storage device.

[0041] A pressure relief device is located within the receiving cavity on the side of the pressure relief port away from the storage container;

[0042] A pressure relief rod is rotatably connected to the door body and fixedly connected to the pressure relief component; the pressure relief rod is located inside the receiving cavity and can rotate about a first central axis relative to the door body;

[0043] The central axis of the pressure relief rod is referred to as the second central axis;

[0044] In the projection of the plane containing the rear wall of the housing, the straight line perpendicular to the first central axis is denoted as the first direction line L1; the dimension of the door body on the first direction line L1 is denoted as the door body height H0; when the pressure relief component closes the pressure relief port, the distance between the second central axis and the lower edge of the door body is denoted as the second distance H2;

[0045] Where 0.2≤H2:H0≤0.5.

[0046] In the aforementioned technical solution, when H2:H0 > 0.5, the pressure relief rod and the pressure relief component mounted on it are located in the area near the upper part of the transparent section, significantly obstructing the upper part of the door. This results in a reduction in the viewing area of ​​the upper part of the door or necessitates lowering the viewing area. Since the low-pressure storage device is typically positioned below the user's eye level within the refrigerator, the user's line of sight is tilted downwards when observing the stored items through the window and transparent section. The significant obstruction of the upper part of the door by the pressure relief rod and the component directly blocks the user's view. The user needs to further lower their line of sight and pass over the pressure relief rod and component to observe the area below, which is inconvenient. Furthermore, when other components below the pressure relief component obstruct the door, the viewing area is still reduced, directly preventing the user from directly viewing the stored items. The user must then search for an unobstructed area, causing significant inconvenience.

[0047] When H2:H0 < 0.2, the pressure relief rod and the pressure relief components mounted on it are located near the lower edge of the transparent part, and correspondingly, the pressure relief port is located at the lower edge of the transparent part. Items near the bottom of the container are more tightly packed due to the gravity of the items above them, easily causing blockage of the pressure relief channel. Furthermore, the proximity of the pressure relief rod and the pressure relief components to the lower edge of the transparent part prevents other components from being placed in the area below the pressure relief components, requiring additional obstruction of the upper space.

[0048] When 0.2≤H2:H0≤0.5, the upper area of ​​the door is not obstructed, ensuring that the area of ​​the viewing section meets the viewing requirements and also ensuring the connectivity of the pressure relief channel; in addition, space is reserved for other components to be installed in the lower area of ​​the door. These settings do not obstruct the viewing path that aligns with the user's line of sight, allowing the user to directly view the stored items through the viewing section in the upper area of ​​the door.

[0049] In some embodiments, in the projection of the plane containing the rear wall of the housing, the distance between the first central axis and the lower edge of the door body is denoted as the first distance H1;

[0050] Where 1.2≤H1:H2≤1.5.

[0051] In the above technical solution, when H1:H2>1.5, the distance between the second central axis B and the first central axis of the pressure relief rod is too large, and the rotation radius of the pressure relief rod is too large. This results in the pressure relief rod having to rotate too far for the same angle, which in turn requires too much space. Consequently, the receiving cavity becomes too large to meet the space required for its movement, ultimately leading to an overall increase in the thickness of the door.

[0052] When H1:H2<1.2, the distance between the second central axis B and the first central axis of the pressure relief rod is too small, and the rotation radius of the pressure relief rod is too small. As a result, when rotating by the same angle, the rotation distance of the pressure relief rod is too small, which leads to the movement of the pressure relief component driven by the pressure relief rod being too small, resulting in the inability to effectively control the opening or closing of the pressure relief port.

[0053] Specifically, pressure relief components are often made of elastic elements such as rubber to seal the pressure relief port through elastic deformation. When the pressure relief port needs to be opened, the pressure relief rod needs to move a certain distance to allow the elastic pressure relief component to return to its original shape. Then, the pressure relief rod needs to move further to separate the returned pressure relief component from the pressure relief port, thus completing the action of opening the pressure relief port. Conversely, when the pressure relief component is completely separated from the pressure relief port, the pressure relief rod needs to move a certain distance to bring the pressure relief component closer to the pressure relief port. When the pressure relief component and the pressure relief port are in contact but not interacting, the pressure relief rod needs to move further to press the pressure relief component, and the pressure relief component's elastic deformation further presses the pressure relief port. All of the above require the pressure relief rod to have sufficient range of motion to meet the control of the pressure relief component over the pressure relief port.

[0054] When 1.2≤H1:H2≤1.5, on the one hand, the rotation radius of the pressure relief rod is more suitable for the size of the receiving cavity, without causing additional changes such as increasing the thickness of the door. On the other hand, it allows the pressure relief rod to have sufficient range of motion to effectively control the smoothness of opening the pressure relief port or the sealing performance when closing it.

[0055] In some embodiments, the low-pressure storage device includes a locking assembly; the locking assembly includes:

[0056] A first locking part is provided on the housing;

[0057] The second locking part is used to cooperate with the first locking part to lock or unlock the door body from the housing.

[0058] The pressure relief rod is connected to the second locking part;

[0059] When the second locking part is locked or unlocked with the first locking part, the second locking part drives the pressure relief rod to rotate, and the pressure relief rod drives the pressure relief component to rotate, so that the pressure relief component opens or closes the pressure relief port.

[0060] In the above technical solution, the pressure relief component and the locking component are linked. While the locking component unlocks or locks the housing and the door, it drives the pressure relief component to move to open or close the pressure relief port, thereby opening or sealing the low-pressure storage device.

[0061] Specifically, when the first and second locking parts cooperate to lock the door and housing, the pressure relief component seals the pressure relief port, creating a sealed storage space for the low-pressure storage device, facilitating vacuuming to create a low-pressure storage environment. When the first and second locking parts cooperate to unlock the door and housing, the pressure relief component opens the pressure relief port, allowing outside gas to enter the low-pressure storage device, balancing the internal and external air pressures and making it easier for the user to pull out the container through the door.

[0062] Secondly, a refrigeration device is provided, comprising:

[0063] The enclosure defines the storage space;

[0064] A low-pressure storage device, which is housed within the storage chamber;

[0065] A vacuum device for removing gas from the low-pressure storage device;

[0066] The low-pressure storage device includes:

[0067] case;

[0068] The storage container can be pulled out or pushed into the housing;

[0069] The door body includes:

[0070] A transparent portion, which is connected to the storage container; the transparent portion includes:

[0071] A perspective section protrudes from the side away from the container, allowing the interior space of the container to be seen through the perspective section;

[0072] A door frame that mates with the transparent portion; the door frame surrounds the transparent portion;

[0073] A pressure relief assembly is used to relieve pressure on a low-pressure storage device after the gas has been extracted by the extraction device; the pressure relief assembly is concealed by the lower frame of the door frame;

[0074] In the projection of the plane containing the rear wall of the housing, the straight line perpendicular to the first central axis is denoted as the first direction line L1; the dimension of the door body on the first direction line L1 is denoted as the door body height H0; the distance between the lower edge of the transparent part and the lower edge of the door body is denoted as the third distance H3.

[0075] Where 0.2≤H3:H0≤0.6.

[0076] In the aforementioned technical solution, the door frame and the transparent section work together. The door frame blocks the circumferential area of ​​the transparent section near the edge, creating a large, continuous, and integrated viewing area. This allows users to easily observe the food inside the container through the viewing window and the corresponding transparent area. Furthermore, the pressure relief component is concealed by the door frame, ensuring the viewing area remains unobstructed and maintaining its integrity and continuity. This also allows users to easily observe the food inside. Additionally, the pressure relief component is protected from external influences, resulting in a cleaner door appearance.

[0077] When H3:H0 > 0.6, the viewing area is too high relative to the door; additionally, the area of ​​the viewing area is too small. Since the low-pressure storage unit is typically positioned below the user's eye level within the refrigerator, the user's line of sight is tilted downwards when viewing the stored items through the window and / or transparent section. The viewing area is only near the top of the door, requiring the user to move away from the door to reduce the downward angle of their line of sight in order to see the stored items. This is inconvenient for direct observation and causes significant discomfort to the user.

[0078] When H2:H0 < 0.2, the area of ​​the viewing section is too large, occupying too much space in the lower part of the door. Pressure relief components are located below the viewing section to avoid obstructing it, and the corresponding pressure relief vents are also located below the viewing section. Items near the bottom of the container are packed more tightly due to the weight of the items above them, easily causing blockage of the pressure relief channels. Furthermore, the distance between the lower edge of the viewing section and the lower edge of the door is too small, preventing other components (such as pressure relief components) from being positioned at the lower edges of both the viewing section and the door.

[0079] When 0.2≤H2:H0≤0.6, the area of ​​the viewing section meets the viewing requirements. Users can directly view stored items even with a slight tilt of their gaze, without needing to adjust the distance between the viewing section and the door, facilitating direct observation. Furthermore, it ensures the connectivity of the pressure relief channel; moreover, it provides space for other components to be installed in the lower area of ​​the door. Attached Figure Description

[0080] Figure 1 A schematic diagram of the overall structure of a refrigeration device according to some embodiments is shown;

[0081] Figure 2 A schematic diagram of a low-pressure storage device in a closed state is shown according to some embodiments;

[0082] Figure 3 A schematic diagram of a low-pressure storage device in an open state is shown according to some embodiments;

[0083] Figure 4 A schematic diagram showing the relative structures of the door body, locking assembly, and pressure relief assembly according to some embodiments is shown;

[0084] Figure 5 An exploded structural diagram of a door body, locking assembly, and pressure relief assembly according to some embodiments is shown as an example.

[0085] Figure 6 A partial cross-sectional view of a low-pressure storage unit according to some embodiments is shown as an example;

[0086] Figure 7 Another partial cross-sectional view of a low-pressure storage unit according to some embodiments is shown exemplarily;

[0087] Figure 8 Another partial cross-sectional view of a low-pressure storage unit according to some embodiments is shown exemplarily;

[0088] Figure 9 An exemplary schematic diagram of a partial structure of a door according to some embodiments is shown;

[0089] Figure 10 An exemplary partial structural schematic diagram of a door body from another perspective according to some embodiments is shown;

[0090] Figure 11 An exemplary schematic diagram of the structure of a pressure relief fixing part according to some embodiments is shown;

[0091] Figure 12 An exemplary structural schematic diagram of a pressure relief fixing part according to some embodiments is shown from another perspective;

[0092] Figure 13 An exemplary schematic diagram of a door structure according to some embodiments is shown;

[0093] Figure 14 An exploded structural schematic diagram of a fastening assembly, a second locking part, and a torsion spring according to some embodiments is shown as an example;

[0094] Figure 15 An exploded structural schematic diagram from another perspective is shown as an example of the fastening assembly, the second locking part, and the torsion spring according to some embodiments;

[0095] Figure 16 An exemplary schematic diagram of the assembly structure of the torsion spring and the second locking part according to some embodiments is shown;

[0096] Figure 17 An exemplary schematic diagram of the assembly structure of a torsion spring and a door frame according to some embodiments is shown;

[0097] Figure 18An exemplary schematic diagram of the assembly structure of the fastening assembly, the second locking part, and the torsion spring according to some embodiments is shown.

[0098] The refrigerator includes: a refrigerator body 101; a door 102; a low-pressure storage device 1; a storage container 2; a shell 3; a storage compartment 30; a storage opening 31; a door 4; a transparent part 41; a first surface B1; a viewing part 411; a second surface B2; a receiving part 410; a first limiting groove 412; a second limiting groove 413; a door frame 42; a viewing window opening 40; and a lower frame 421.

[0099] Receiving cavity 43; viewing window 44; third surface B3; pressure relief port 60; pressure relief component 61; pressure relief fixing part 62; connecting part 621; mounting base 622; first limiting post 6221; second limiting post 6222; pressure relief rod 63; torsion spring 64; torsion spring body 640; first torsion arm 641; first support arm 6411; second support arm 6412; second torsion arm 642; locking assembly 7; first locking part 71; second locking part 72; first locking component 721; First locking strip 7211; Second locking strip 7212; Third locking strip 7213; Fourth locking strip 7214; Handle 73; Countersunk hole 74; Fixing post 51; Fixing hole 52; Recess 53; Fixing seat 54; First fixing plate 541; First support plate 5411; Second support plate 5412; Third support plate 5413; Second fixing plate 542; Fastening connector 55; Fastening post 551; Stop block 552; Fastening gasket 56. Detailed Implementation

[0100] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0101] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0102] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0103] The terms “include” and “have”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0104] The refrigeration device provided in this application can have various implementation forms, such as a refrigerator 100, a wine cabinet, or other devices with refrigeration functions. This application will describe the refrigeration device as a refrigerator 100 as an example.

[0105] Please refer to Figures 1-18 As shown, the refrigerator 100 includes a cabinet 101 having a storage compartment, a door 102 connected to the cabinet 101 for opening and closing the storage compartment, and a refrigeration device for supplying cold air to the storage compartment. The cabinet 101 includes an inner liner defining the storage compartment, an outer shell connected to the outside of the inner liner to form the appearance of the refrigerator 100, and a heat insulation layer disposed between the inner liner and the outer shell to insulate the storage compartment.

[0106] Refrigerator 100 includes multiple storage compartments for storing items. In some embodiments of this application, the multiple storage compartments include a refrigerator compartment and a freezer compartment. In some embodiments of this application, the refrigerator compartment is located above or below the freezer compartment, or the refrigerator compartment and the freezer compartment are arranged side by side along the width direction of the refrigerator body 101. It should be noted that the arrangement of the multiple storage compartments of refrigerator 100 is not limited to the examples described above.

[0107] In some embodiments of this application, a retrieval opening is formed at the front end of the storage compartment to allow for placing stored items into or retrieving stored items from the storage compartment. For example... Figure 1 As shown, the door 102 is connected to the box body 101 to open or close the access port of the storage room.

[0108] 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 body 101.

[0109] 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.

[0110] like Figures 2-3As shown, the low-pressure storage device 1 includes a housing 3 defining a storage chamber 30 and having a storage opening 31, a storage container 2 that can be pushed into or pulled out of the storage chamber 30 defined by the housing 3, and a door 4 located on the side of the storage container 2 away from the rear wall of the housing 3. When the storage container 2 is pushed into the storage chamber 30, the door 4 closes the storage opening 31. The door 4 and the storage container 2 together constitute a drawer unit that can be pushed into and pulled out of the housing 3. The drawer unit is pushed into or pulled out of the housing 3 along a first line of motion. That is, the drawer unit moves along the first line of motion. The first line of motion is a straight line. That is, the drawer unit moves in a straight line when pushed into or pulled out of the housing 3. As one possible configuration, the first line of motion is perpendicular to the rear wall of the housing 32.

[0111] In some embodiments of this application, when the storage port 31 of the storage chamber 30 is closed by the door 4 and the air extraction device is activated, the gas in the storage chamber 30 is extracted, and the storage chamber 30 is in a low-pressure state, forming a low-pressure storage environment.

[0112] According to one embodiment of this application, at the end of the evacuation process, the pressure inside the storage chamber 30 is lower than one standard atmosphere or between one standard atmosphere and absolute vacuum. Because the pressure inside the storage chamber 30 is lower than one standard atmosphere, it is commonly referred to by those skilled in the art as a "vacuum chamber".

[0113] In some embodiments of this application, the door 4 and the storage container 2 are assembled and connected. The door 4 and the storage container 2 are constructed as separate units to meet different needs.

[0114] In some embodiments of this application, the door 4 and the storage container 2 are integrally formed.

[0115] In some embodiments of this application, the housing 3 includes a first housing sidewall and a second housing sidewall (i.e., the left sidewall and the right sidewall of the housing 3) disposed opposite to each other.

[0116] In some embodiments of this application, one end of the opposite ends of the top wall of the housing 3 is connected to the upper end of the first housing side wall, and the other end is connected to the upper end of the second housing side wall. One end of the opposite ends of the bottom wall of the housing 3 is connected to the lower end of the first housing side wall, and the other end is connected to the lower end of the second housing side wall; the rear wall of the housing 3 is connected to the rear end of the first housing side wall, the rear end of the top wall of the housing 3, the rear end of the second housing side wall, and the rear end of the bottom wall of the housing 3.

[0117] The first shell sidewall, the top wall of shell 3, the second shell sidewall, and the front end of the top wall of shell 3 together define the storage port 31. The first shell sidewall, the top wall of shell 3, the second shell sidewall, the bottom wall of shell 3, and the rear wall of shell 3 together define shell 3.

[0118] In some embodiments of this application, such as Figures 3-7As shown, the door body 4 includes a transparent portion 41. The transparent portion 41 is located at the front end of the storage container 2. The transparent portion 41 includes a first surface B1 near the inner cavity of the storage container 2, and the first surface B1 protrudes to the side away from the storage container 2.

[0119] As a configurable method, the first surface B1 is an arc-shaped surface.

[0120] In the above technical solution, the transparent part 41 of the door 4 makes the storage container 2 visible through the door 4, allowing the user to see the state of the food inside without opening the low-pressure storage device 1, further improving the convenience of the user in using the low-pressure storage device 1; at the same time, it can reduce the frequency of the user opening and closing the low-pressure storage device 1, thereby reducing the frequency of the drawer device to evacuate the low-pressure storage device 1, improving the service life of the vacuum drawer, avoiding increased energy consumption, and ensuring the vacuum preservation effect of the food.

[0121] On the other hand, the first surface B1 of the transparent part 41 near the storage container 2 protrudes away from the storage container 2 to form a curved surface on the side of the door body 4 near the inner cavity of the storage container 2, thereby increasing the contact area between the door body 4 and the storage chamber 30 of the low-pressure storage device 1; under the same pressure, the pressure on the door body 4 is reduced and the deformation resistance is increased, thereby improving the pressure bearing capacity of the door body 4 and preventing the door body 4 from deforming due to vacuuming.

[0122] In some embodiments of this application, such as Figures 3-7 As shown, the door 4 includes a door frame 42. The door frame 42 defines a viewing window opening 40. The door frame 42 cooperates with the transparent part 41, and it blocks the circumferential area near the edge of the transparent part 41, forming a large and continuous viewing area, which makes it easy for users to observe the state of the food inside the container 2 through the viewing window opening 40 and the transparent part 41 area corresponding to the viewing window opening 40.

[0123] In some embodiments of this application, the transparent portion 41 includes a viewing portion 411 protruding away from the storage container 2. The viewing portion 411 corresponds to the viewing window opening 40. Optionally, a door frame 42 surrounds the viewing portion 411.

[0124] The above technical solutions ensure that the transparent section 411 is not obstructed by the door frame 42, forming a complete and continuous large-area visible area. On the other hand, since the transparent section 411 is not obstructed by the door frame 42, a single-layer transparent section 411 can be provided for the user to observe the state of the food inside the container 2; and the visible area formed by the single-layer transparent section 411 has high transparency, making the field of vision clearer.

[0125] In some embodiments of this application, the surface of the viewing portion 411 away from the storage container 2 is designated as the second surface B2. The second surface B2 protrudes to the side away from the storage container 2. The above technical solutions increase the observation area for viewing the interior of the storage container 2 from the outside of the low-pressure storage device 1, increasing the number of observation points and providing convenience for the user. Furthermore, increasing the contact area between the door 4 and the external environment of the low-pressure storage device 1; under the same pressure, the pressure borne by the door 4 near the outside of the low-pressure storage device 1 is reduced, improving the pressure-bearing capacity and deformation resistance of the door 4.

[0126] In some embodiments of this application, the viewing portion 411 is a convex plate protruding away from the storage container 2. The surface of the convex plate-shaped viewing portion 411 near the inner cavity of the storage container 2 is the first surface B1, and the surface of the convex plate-shaped viewing portion 411 away from the inner cavity of the storage container 2 is the second surface B2.

[0127] The above technical solution incorporates a convex-plate-shaped viewing section 411, ensuring that both the surfaces of the viewing section 411 near and away from the storage container 2 are curved. This simultaneously increases the contact area between the door 4 and the storage chamber 30 of the low-pressure storage unit, as well as the area between the door 4 and the external environment. Under the same pressure, the pressure on both sides of the door 4 is reduced, improving the door 4's pressure-bearing capacity. Furthermore, the surface of the viewing section 411 away from the storage container 2 protrudes to the side furthest from the container 2, increasing the observation area for viewing the interior of the storage container 2 from the outside of the low-pressure storage device 1, thus increasing the number of viewing points and providing convenience for the user. Additionally, the curved surfaces of the viewing section 411 near and away from the storage container 2 facilitate its manufacturing process.

[0128] In some embodiments of this application, at least a portion of the viewing portion 411 protrudes from the side of the plane containing the viewing window opening 40 away from the container 2. That is, at least a portion of the viewing portion 411 is located on the side of the plane containing the viewing window opening 40 away from the container 2.

[0129] The above technical solutions ensure a tight fit between the door frame 42 and the viewing portion 411, preventing the convex viewing portion 411 from retracting into the door frame 42 and increasing the gap between them, which would affect the overall appearance and aesthetics of the door 4. Furthermore, an increased gap between the door frame 42 and the viewing portion 411 makes it easier for dust and debris to accumulate, affecting the cleanliness of the door 4.

[0130] In some embodiments of this application, the plane containing the viewing window opening 40 is denoted as the viewing window plane P. The point at which the second surface B2 of the perspective portion 411 is furthest from the viewing window plane P is denoted as the first point a; wherein, the distance between the first point a and the viewing window plane P is denoted as the first distance J. Wherein, 2mm≤J≤7mm.

[0131] In the above technical solutions, when J < 2mm, because the transparent part 41 is convex, the size of the viewing part 411 protruding from the side of the door frame 42 away from the storage container 2 is too small. This increases the gap between the door frame 42 and the viewing part 411, affecting the overall appearance and aesthetics of the door 4. In addition, the increased gap between the door frame 42 and the viewing part 411 makes it easier for dust and debris to accumulate in the gap, affecting the cleanliness of the door 4.

[0132] When J > 7mm, because the transparent part 41 is convex, the size of the viewing part 411 protruding from the door frame 42 away from the storage container 2 is too large. This makes the surface of the viewing part 411 of the door body 4 away from the storage container 2 obviously convex, reducing the appearance matching degree between the low-pressure storage device 1 and other devices placed inside the refrigerator 100, reducing the adaptability of the low-pressure storage device 1 and other devices placed inside the refrigerator 100, and increasing the disorder of the arrangement of various devices inside the refrigerator 100, including the low-pressure storage device 1. In addition, it increases the thickness of the door body 4; with the depth of the refrigerator 100 fixed, the increase in the thickness of the door body 4 leads to the decrease in the depth of the shell 3, which leads to the decrease in the volume of the storage container 2, and reduces the storage space of the low-pressure storage device 1.

[0133] When 2mm ≤ J ≤ 7mm, the gap between the door frame 42 and the viewing part 411 is reduced, increasing the overall appearance and aesthetics of the door 4, reducing the accumulation of dust and debris, and improving the cleanliness of the door 4. It also ensures a high degree of visual compatibility between the low-pressure storage device 1 and other devices placed inside the refrigerator 100, improving their suitability and enhancing the neatness and aesthetics of the arrangement of all devices inside the refrigerator 100, including the low-pressure storage device 1. Furthermore, limiting the space occupied by the door 4 ensures sufficient storage space for the low-pressure storage device 1.

[0134] In some embodiments of this application, such as Figure 8 As shown, the viewing section 411 is located on the side of the plane where the viewing window opening 40 is located, closer to the storage container 2. The door body 4 includes a viewing window 44. The viewing window 44 is provided at the viewing window opening 40, and it is located on the side of the transparent section 41 away from the storage container 2. The viewing window 44 is transparent, and the state of the items stored in the storage container 2 can be viewed through the viewing window 44 and the viewing section 441.

[0135] The above technical solution utilizes the transparent section 41 (viewing section 411) and the viewing window 44 to allow the contents placed in the storage container 2 to be visible through both sections. This enables users to see the condition of the food inside the low-pressure storage device 1 without opening it, further enhancing the convenience of using the device. Simultaneously, it reduces the frequency of opening and closing the device, thereby reducing the frequency of vacuuming the drawer, extending the lifespan of the vacuum drawer, preventing increased energy consumption, and ensuring the vacuum preservation effect of the food. Furthermore, the viewing window 44 fits more tightly with the door frame 42, reducing the accumulation of dust and debris. Moreover, the viewing window 44, in conjunction with the door frame 42, blocks the viewing section 411, protecting it from external influences.

[0136] In some embodiments of this application, such as Figure 8 As shown, the viewing window 44 and the door frame 42 together define the front surface of the door body located on the side away from the storage container 2. The surface with the largest distance between the front surface of the door body and the rear wall of the housing 3 is denoted as the third surface B3, and the third surface B3 is a plane.

[0137] In the above technical solution, the viewing window 44 cooperates with the door frame 42, and the third surface B3, which has the largest distance between the door body 4 and the rear wall of the housing, is defined as the frontmost front surface of the door body 4. By setting the third surface B3 as a plane, the frontmost front surface of the door body 4 is also a plane, resulting in a high degree of visual compatibility between the low-pressure storage device 1 and other devices placed inside the refrigerator 100. This improves the adaptability of the low-pressure storage device 1 to other devices placed inside the refrigerator 100 and increases the neatness and aesthetics of the arrangement of all devices inside the refrigerator 100, including the low-pressure storage device 1.

[0138] The above technical solution, with the arrangement of the transparent part 41 (viewing part 411) and the viewing window part 44 of the door body 42, ensures the pressure-bearing capacity of the door body 4 and prevents the door body 4 from deforming due to vacuuming; and also improves the appearance adaptability of the low-pressure storage device 1.

[0139] In some embodiments of this application, the door frame 42 includes a lower frame 421 near the bottom wall of the housing 3. That is, the lower frame 421 is located below the viewing window opening 40. The transparent portion 41 and the lower frame 421 of the door frame 42 cooperate to define a receiving cavity 43. The receiving cavity 43 is located below the viewing portion 411. The receiving cavity 43 communicates with the outside of the low-pressure storage device 1 when the door body 4 is in the closed state. Specifically, the receiving cavity 43 communicates with the outside of the low-pressure storage device 1 when the door body 4 is in the closed state through the assembly gap of the transparent portion 41, the door frame 42 (viewing window portion 44), etc.

[0140] In some embodiments of this application, the low-pressure storage device 1 includes a pressure relief component to relieve pressure on the low-pressure storage device 1, which is in a "vacuum" state, when the door 4 needs to be opened, so that the air pressure on the inside and outside of the low-pressure storage device 1 tends to be balanced, so as to facilitate the user to open the door 4.

[0141] In some embodiments of this application, the pressure relief component is obscured by the door frame 42. This ensures that the viewing portion 411 is not obstructed by the pressure relief component, maintaining the integrity and continuity of the viewing portion 411 and allowing the user to easily observe the condition of the food inside through the viewing portion 411. On the other hand, it also protects the pressure relief component from external influences, making the door 4 appear neater.

[0142] In some embodiments of this application, the pressure relief assembly includes a pressure relief channel for connecting the inner and outer sides of the low-pressure storage device 1, so that when pressure relief is required, the inner and outer sides of the low-pressure storage device 1 are connected, so that the air pressure on the inner and outer sides of the low-pressure storage device 1 tends to be balanced.

[0143] In some embodiments of this application, a pressure relief channel extends through the transparent portion 41. The pressure relief channel includes a pressure relief port 60 facing away from the storage container 2. The pressure relief port 60 communicates with the receiving cavity 43; the pressure relief port 60 is used to communicate with the outside of the low-pressure storage device 1. As one possible configuration, the pressure relief port 60 is located below the transparent portion 411.

[0144] During depressurization, because the air pressure inside the low-pressure storage device 1 is lower than the external air pressure, the airflow outside the low-pressure storage device 1 enters the depressurization channel through the depressurization port 60 and then enters the interior of the low-pressure storage device 1 along the depressurization channel. The air pressure inside the low-pressure storage device 1 tends to balance with its external air pressure, making it convenient for the user to open the door 4. It should be noted that, as a type of airflow, the gas outside the low-pressure storage device 1 enters the receiving cavity 43 through the assembly gaps between the components of the door 4, and then enters the depressurization channel through the depressurization port 60 from the receiving cavity 43.

[0145] During vacuuming, the low-pressure storage device 1 needs to form a sealed environment. At this time, the door 4 needs to close the storage port 31 and the pressure relief port 60. Then the vacuuming device will work again to vacuum the low-pressure storage device 1.

[0146] In some embodiments of this application, the pressure relief assembly includes a pressure relief member 61. The pressure relief member 61 is located on the side of the pressure relief port 60 away from the storage container 2. The pressure relief member 61 is used to cooperate with the pressure relief port 60 to open or close the pressure relief port 60. The pressure relief member 61 is located within the receiving cavity 43 to fully utilize the internal space of the door body 4, reduce the overall space occupied by the door body 4, increase the volume of the housing 3 of the low-pressure storage device 1, and increase the volume of the storage chamber 30.

[0147] In some embodiments of this application, the pressure relief assembly includes a pressure relief fixing part 62. The pressure relief fixing part 62 is rotatably connected to the transparent part 41. When the pressure relief fixing part 62 rotates relative to the transparent part 41, it drives the pressure relief member 61 to move towards or away from the pressure relief port 60.

[0148] In some embodiments of this application, the pressure relief fixing part 62 is rotatably connected to the transparent part 41 via a pressure relief rod 63. Driving the pressure relief rod 63 to rotate causes the pressure relief fixing part 62 to rotate, which in turn causes the pressure relief component 61 to rotate, thereby opening or closing the pressure relief port 60.

[0149] In some embodiments of this application, the pressure relief component 61 is inserted into the pressure relief fixing part 62, which facilitates the disassembly and assembly of the pressure relief component 61 and makes it easy to replace the pressure relief component 61.

[0150] In some embodiments of this application, a receiving portion 410 with an opening is formed on the transparent portion 41. The receiving portion 410 is located below the transparent portion 411. The opening of the receiving portion 410 faces away from the container 2. The receiving portion 410 includes an upper receiving wall, a first receiving side wall, a second receiving side wall, and a lower receiving wall. The upper receiving wall and the lower receiving wall are disposed opposite to each other, and the first receiving side wall and the second receiving side wall are disposed opposite to each other. The first receiving side wall and the second receiving side wall are arranged along the rotation axis of the pressure relief rod 63.

[0151] With the pressure relief component 61 closed at the pressure relief port 60, the pressure relief fixing part 62 and the pressure relief component 61 fixed thereto are at least partially located within the receiving part 410.

[0152] The above technical solutions make full use of the internal space of the door 4 to install pressure relief components.

[0153] In some embodiments of this application, such as Figure 6 , Figure 8 and Figures 9-12 As shown, relative to the plane containing the rear wall of the housing 3, the upper receiving wall slopes downwards towards the rear wall of the housing 3. A pressure relief port 60 is formed on the upper receiving wall. It can be understood that the distance between the upper end of the upper receiving wall and the rear wall of the housing 3 is greater than the distance between the lower end of the upper receiving wall and the rear wall of the housing 3.

[0154] The pressure relief fixing part 62 includes a connecting part 621 fixed to the pressure relief rod 63. The connecting part 621 is connected to the pressure relief rod 63. In a plane projection perpendicular to the central axis of the pressure relief rod 63, the connecting part 621 extends radially along the pressure relief rod 63.

[0155] The pressure relief fixing part 62 includes a mounting base 622. The mounting base 622 and the pressure relief rod 63 are respectively connected to the opposite ends of the connecting part 621. The mounting base 622 is inclined relative to the connecting part 621. The pressure relief member 61 is mounted on the mounting base 622 and is used to cooperate with the pressure relief port 60 on the upper wall of the receiving part 410 to open or close the pressure relief port 60.

[0156] In the above technical solution, with the pressure relief component 61 closing the pressure relief port 60, the connecting portion 621 of the pressure relief fixing portion 62 extends in the direction from the pressure relief rod 63 towards the container 2, so that the mounting base 622 and the pressure relief component 61 mounted on it are located inside the receiving portion 410, making full use of the thickness space of the transparent portion 41 of the door body 4. Furthermore, with the pressure relief component 61 closing the pressure relief port 60, the pressure relief component 61 mounted on the inclined mounting base 622 is also inclined, and the pressure relief component 61 cooperates with the inclined upper wall of the receiving portion to close the pressure relief port 60 located on the upper wall of the receiving portion. The inclined arrangement of the mounting base 622 restricts the space occupied by the mounting base 622 and the pressure relief component 61, which rotate under the drive of the pressure relief rod 63, to the receiving portion 410, without requiring an additional increase in the thickness of the door body 4. In addition, the mounting base 622 is inclined, and its projected area in the plane where the rear wall of the housing 3 is located is smaller than its own area corresponding to the upper wall of the housing (similarly, the projected area of ​​the pressure relief member 61 is smaller than its own area corresponding to the upper wall of the housing), which reduces the obstruction of the transparent part 41 by the mounting base 622 and the pressure relief member 61 on it; it is particularly suitable for cases where at least the lower frame 421 of the door frame 42 is set to be transparent.

[0157] In some embodiments of this application, such as Figures 9-12 As shown, a first limiting groove 412 is provided on the first receiving side wall. A first limiting post 6221 is provided on the mounting base 622. The first limiting post 6221 cooperates with the first limiting groove 412. When the pressure relief rod 63 drives the mounting base 622 to rotate, the first limiting post 6221 moves relative to the first limiting groove 412 to limit the movement of the mounting base 622.

[0158] In some embodiments of this application, a second limiting groove 413 is provided on the second receiving sidewall. A second limiting post 6222 is provided on the mounting base 622. The second limiting post 6222 cooperates with the second limiting groove 413. When the pressure relief rod 63 drives the mounting base 622 to rotate, the second limiting post 6222 moves relative to the second limiting groove 413 to limit the movement of the mounting base 622.

[0159] The above technical solutions, where the first limiting groove 412 cooperates with the first limiting groove 412, and / or the first limiting groove 412 cooperates with the second limiting groove 413, make the movement trajectory of the pressure relief fixing part 62 more precise, so that the pressure relief part 61 can accurately cooperate with the pressure relief port 60, so as to accurately open or close the pressure relief port 60.

[0160] In some embodiments of this application, at least the lower frame 421 of the door frame 42 is transparent. The appearance of the door frame 42 and the transparent part 41 (view part 411) provided above is more consistent and uniform, and can cover the components between the transparent part 41 and the door frame 42, so as to protect them from external influences, make full use of the internal space of the door body 4, and improve the cleanliness of the appearance of the door body 4.

[0161] In some embodiments of this application, the door frame 42 is opaque to block the surrounding area of ​​the transparent portion 41, leaving only the transparent portion 411 as the visible area. Furthermore, the opaque door frame 42 can conceal the components between the transparent portion 41 and the door frame 42, thus making full use of the internal space of the door body 4 while preventing the components located between the transparent portion 41 and the door frame 42 from being exposed on the outside of the door body 4, thereby improving the neatness of the door body 4's appearance.

[0162] In some embodiments of this application, the rotation center axis of the pressure relief rod 63 is denoted as the first center axis A. The center axis of the pressure relief rod 63 is denoted as the second center axis B. The first center axis A and the second center axis B are parallel.

[0163] like Figure 13 As shown, the definition is: in the projection onto the plane perpendicular to the first line of motion (or in the projection onto the plane containing the rear wall of the housing 32), the straight line perpendicular to the first central axis A is denoted as the first direction line L1. It should be noted that... Figure 10 The red center line shows the projection of door frame 42.

[0164] In the projection onto the plane perpendicular to the first line of motion (or in the projection onto the plane containing the rear wall of the housing 3), the dimension of the door 4 on the first direction line L1 is denoted as the height H0 of the door 4. The distance between the first central axis A and the lower edge of the door 4 is denoted as the first distance H1. When the pressure relief component 61 closes the pressure relief port 60, the distance between the second central axis B of the pressure relief rod 63 and the lower edge of the door 4 is denoted as the second distance H2. It should be noted that the lower edge of the door 4, as the reference object above, refers to the lowest edge of the entire door 4 on the first direction line L1. As an optional configuration, corresponding to the attached... Figure 10 The projection of the door frame 42 includes the projection of the transparent part 41, and the lower edge of the door body 4 here refers to the lower edge of the door frame 42.

[0165] In some embodiments of this application, 0.2≤H2:H0≤0.5.

[0166] When H2:H0 > 0.5, the pressure relief rod 63 and the pressure relief component 61 mounted on it are located in the area of ​​the transparent part 41 near the upper end of the door body 4, which greatly obstructs the upper area of ​​the door body 4. This results in a reduction in the area of ​​the transparent part 411 located in the upper area of ​​the door body 4, or the transparent part 411 needs to be moved down. Since the low-pressure storage device 1 is located in the refrigerator 100 at a height below the user's horizontal line of sight, the user's line of sight is tilted downwards when observing the stored items through the window part 44 and the transparent part 41. The pressure relief rod 63 and the pressure relief component 61 mounted on it greatly obstruct the upper area of ​​the door body 4, directly blocking the user's line of sight. The user needs to further lower their line of sight and pass over the pressure relief rod 63 and the pressure relief component 61 to see the area below them, which is inconvenient for the user. In addition, when other components below the pressure relief component 61 block the door 4, the area of ​​the viewing section 411 is reduced, which will directly prevent the user from directly viewing the stored items. The user will have to search for an unblocked area to view them, causing great inconvenience to the user.

[0167] When H2:H0 < 0.2, the pressure relief rod 63 and the pressure relief component 61 mounted on it are located near the lower edge of the transparent part 41, and correspondingly, the pressure relief port 60 is located at the lower edge of the transparent part 41. Items near the bottom of the container 2 are stacked more tightly due to the gravity of the items above them, which can easily cause the items to block the pressure relief channel. Furthermore, the proximity of the pressure relief rod 63 and the pressure relief component 61 to the lower edge of the transparent part 41 prevents other components from being placed in the area below the pressure relief component 61, requiring additional obstruction of the upper space.

[0168] When 0.2≤H2:H0≤0.5, it does not obstruct the upper area of ​​the door 4, ensuring that the area of ​​the viewing section 411 meets the viewing requirements and also ensures the connectivity of the pressure relief channel; in addition, it also reserves space for other components to be installed in the lower area of ​​the door 4. The above settings do not obstruct the viewing path that conforms to the user's line of sight, allowing the user to directly view the stored items through the viewing section 411 in the upper area of ​​the door 4.

[0169] In some embodiments of this application, 0.2≤H1:H0≤0.6.

[0170] When H1:H0>0.6, due to the position limitation of the pressure relief rod 63, the distance between the second central axis B and the first central axis A of the pressure relief rod 63 is too large, and the rotation radius of the pressure relief rod 63 is too large. As a result, when rotating by the same angle, the rotation distance of the pressure relief rod 63 is too large, which makes the space required too large. Consequently, the receiving cavity 43 becomes too large to meet the space required for its movement, and ultimately the overall thickness of the door body 4 increases.

[0171] When H1:H0 < 0.2, due to the position limitation of the pressure relief rod 63, the distance between the second central axis B and the first central axis A of the pressure relief rod 63 is too small, and the rotation radius of the pressure relief rod 63 is too small. As a result, when rotating by the same angle, the rotation distance of the pressure relief rod 63 is too small, which causes the movement of the pressure relief component 61 driven by the pressure relief rod 63 to be too small, resulting in the inability to effectively control the opening or closing of the pressure relief port 60.

[0172] Specifically, the pressure relief component 61 is often designed as an elastic element such as rubber to seal the pressure relief port 60 through elastic deformation. When it is necessary to open the pressure relief port 60, the pressure relief rod 63 needs to move a certain distance to allow the elastic pressure relief component 61 to return to its original shape. Then, the pressure relief rod 63 needs to continue moving to separate the restored pressure relief component 61 from the pressure relief port 60, thus completing the action of opening the pressure relief port 60. Correspondingly, when the pressure relief component 61 is completely separated from the pressure relief port 60 by a certain distance, the pressure relief rod 63 needs to move a certain distance to bring the pressure relief component 61 closer to the pressure relief port 60. When the pressure relief component 61 is in contact with the pressure relief port 60 and there is no interaction, the pressure relief rod 63 needs to move further to press the pressure relief component 61, and the pressure relief component 61 further presses the pressure relief port 60 through elastic deformation. All of the above require the pressure relief rod 63 to have sufficient range of motion to satisfy the control of the pressure relief component 61 over the pressure relief port 60.

[0173] When 0.2≤H1:H0≤0.6, on the one hand, the rotation radius of the pressure relief rod 63 is more suitable for the size of the receiving cavity 43, and will not cause any changes such as additional thickness to the door body 4. On the other hand, it allows the pressure relief rod 63 to have sufficient range of motion to effectively control the smoothness of opening the pressure relief port 60 or the sealing performance when closing it.

[0174] In some embodiments of this application, 1.2≤H1:H2≤1.5.

[0175] When H1:H2>1.5, the distance between the second central axis B and the first central axis A of the pressure relief rod 63 is too large, and the rotation radius of the pressure relief rod 63 is too large. This results in the pressure relief rod 63 rotating too far for the same angle, which in turn requires too much space. Consequently, the receiving cavity 43 becomes too large to meet the space required for its movement, ultimately leading to an overall increase in the thickness of the door body 4.

[0176] When H1:H2<1.2, the distance between the second central axis B and the first central axis A of the pressure relief rod 63 is too small, and the rotation radius of the pressure relief rod 63 is too small. As a result, when rotating by the same angle, the rotation distance of the pressure relief rod 63 is too small, which causes the movement of the pressure relief component 61 driven by the pressure relief rod 63 to be too small, resulting in the inability to effectively control the opening or closing of the pressure relief port 60.

[0177] Specifically, the pressure relief component 61 is often designed as an elastic element such as rubber to seal the pressure relief port 60 through elastic deformation. When it is necessary to open the pressure relief port 60, the pressure relief rod 63 needs to move a certain distance to allow the elastic pressure relief component 61 to return to its original shape. Then, the pressure relief rod 63 needs to continue moving to separate the restored pressure relief component 61 from the pressure relief port 60, thus completing the action of opening the pressure relief port 60. Correspondingly, when the pressure relief component 61 is completely separated from the pressure relief port 60 by a certain distance, the pressure relief rod 63 needs to move a certain distance to bring the pressure relief component 61 closer to the pressure relief port 60. When the pressure relief component 61 is in contact with the pressure relief port 60 and there is no interaction, the pressure relief rod 63 needs to move further to press the pressure relief component 61, and the pressure relief component 61 further presses the pressure relief port 60 through elastic deformation. All of the above require the pressure relief rod 63 to have sufficient range of motion to satisfy the control of the pressure relief component 61 over the pressure relief port 60.

[0178] When 1.2≤H1:H2≤1.5, on the one hand, the rotation radius of the pressure relief rod 63 is more suitable for the size of the receiving cavity 43, and will not cause any additional changes such as increasing the thickness of the door body 4. On the other hand, it allows the pressure relief rod 63 to have sufficient range of motion to effectively control the smoothness of opening the pressure relief port 60 or the sealing performance when closing it.

[0179] In some embodiments of this application, in a plane perpendicular to the first line of motion, along the first direction line L1, the highest point of the pressure relief member 61 is located below the highest point of the pressure relief rod 63.

[0180] The above technical solutions reduce the obstruction of the transparent part 41 by the pressure relief component 61 in the area above the pressure relief rod 63, thereby increasing the area and continuity of the upper visible area (transparent part 411) of the door body 4.

[0181] In some embodiments of this application, in the projection in a plane perpendicular to the first line of motion (or in the projection in the plane where the rear wall of the housing 3 is located), the lower edge of the perspective portion 411 (attached) Figure 13 The distance between the dashed line L0 and the lower edge of the door body 4 is denoted as the third distance H3.

[0182] In some embodiments of this application, 0.2≤H3:H0≤0.6.

[0183] When H3:H0 > 0.6, the viewing section 411 is too high relative to the door 4; in addition, the area of ​​the viewing section 411 is too small. Since the low-pressure storage device 1 is positioned inside the refrigerator 100 below the user's eye level, the user's line of sight is tilted downwards when observing the stored items through the viewing window 44 and / or the transparent section 41. The area occupied by the viewing section 411 is only near the area above the door 4. To view the stored items through the viewing section 411, the user needs to move away from the door 4 to reduce the downward angle of their line of sight; this is not conducive to direct observation and causes great inconvenience to the user.

[0184] When H2:H0 < 0.2, the area of ​​the viewing section 411 is too large, occupying too much space in the lower part of the door 4. Pressure relief components are located below the viewing section 411 to avoid obstructing it, and the corresponding pressure relief port 60 is located below the viewing section 411. Items near the bottom of the storage container 2 are packed more tightly due to the weight of the items above them, easily causing blockage of the pressure relief channel. Furthermore, the distance between the lower edge of the viewing section 411 and the lower edge of the door 4 is too small, preventing other components (such as pressure relief components) from being positioned at the lower edges of the viewing section 411 and the door 4.

[0185] When 0.2≤H2:H0≤0.6, the area of ​​the viewing section 411 meets the viewing requirements. Users can directly view the stored items even with a slight tilt of their gaze, without needing to adjust the distance between the viewing section and the door 4, facilitating direct observation. Furthermore, it ensures the connectivity of the pressure relief channel; moreover, it provides space for other components to be installed in the lower area of ​​the door 4.

[0186] In some embodiments of this application, such as Figures 4-5 , Figure 7 , Figures 14-18 As shown, the low-pressure storage device 1 includes a locking assembly 7. The locking assembly 7 is used to lock or unlock the door 4 and the housing 3.

[0187] The locking assembly 7 includes a first locking part 71 and a second locking part 72. The first locking part 71 is disposed on the first side wall of the housing 3; the second locking part 72 is disposed on the door 4 and is used to cooperate with the first locking part 71 to lock or unlock the door 4 and the housing 3. The pressure relief rod 63 is connected to the second locking part 72.

[0188] The second locking part 72 moves to lock or unlock with the first locking part 71; simultaneously, the second locking part 72 drives the pressure relief rod 63 to rotate around the first central axis A, and the pressure relief rod 63 drives the pressure relief fixing part 62 to move synchronously, so that the pressure relief fixing part 62 drives the pressure relief component 61 to rotate around the first central axis A to close or open the pressure relief port 60. The specific operation process is as follows:

[0189] When the door 4 changes from the open state to the closed state, the second locking part 72 approaches the first locking part 71. The second locking part 72 drives the pressure relief rod 63 to rotate around the first central axis A. The pressure relief rod 63 drives the pressure relief fixing part 62 and the pressure relief component 61 to rotate around the first central axis A, so that the pressure relief component 61 approaches the pressure relief port 60.

[0190] When the second locking part 72 locks with the first locking part 71, the door body 4 locks with the housing 3, and the pressure relief member 61 presses against the pressure relief port 60 so that the pressure relief member 61 closes the pressure relief port 60.

[0191] When the door 4 changes from the closed state to the open state, the second locking part 72 unlocks from the first locking part 71. The second locking part 72 drives the pressure relief rod 63 to rotate around the first central axis A. The pressure relief rod 63 drives the pressure relief fixing part 62 and the pressure relief component 61 to rotate around the first central axis A, so that the pressure relief component 61 moves away from the pressure relief port 60, and the pressure relief component 61 opens the pressure relief port 60.

[0192] In the above technical solution, the pressure relief component and the locking component 7 are linked. While the locking component 7 unlocks or locks the housing 3 and the door 4, it simultaneously moves the pressure relief component 61 to open or close the pressure relief port 60, thereby opening or sealing the low-pressure storage device 1. Specifically, when the first locking part 71 and the second locking part 72 cooperate to lock the door 4 and the housing 3, the pressure relief component 61 seals the pressure relief port 60, creating a sealed storage space in the low-pressure storage device 1, facilitating vacuuming to create a low-pressure storage environment. When the first locking part 71 and the second locking part 72 cooperate to unlock the door 4 and the housing 3, the pressure relief component 61 opens the pressure relief port 60, allowing gas outside the low-pressure storage device 1 to enter, making the internal and external air pressures of the low-pressure storage device 1 parallel, allowing the user to easily pull out the storage container 2 through the door 4.

[0193] In some embodiments of this application, the second locking part 72 includes a first locking member 721. The first locking member 721 is rotatably connected to the door body 4 about a first central axis A. The pressure relief rod 63 is fixedly connected to the first locking member 721.

[0194] In some embodiments of this application, such as Figures 14-18 As shown, the locking assembly includes a reset member. The reset member acts on the door frame 42 and the first locking member 721.

[0195] When the door 4 is in the open state (at this time, the pressure relief port 60 is opened in the pressure relief component 61), the reset component is compressed and the reset component accumulates elastic potential energy.

[0196] When the door 4 transitions from the open state to the closed state (correspondingly, during the transition from the state where the pressure relief member 61 opens the pressure relief port 60 to the state where the pressure relief member 61 closes the pressure relief port 60), the reset member releases at least part of the elastic potential energy to drive the second locking part (the first locking member 721) to move, so that the second locking part and the first locking part are finally locked; in addition, during the above process, the reset member drives the pressure relief rod 63 to move, and the pressure relief rod 63 drives the pressure relief member 61 to approach the pressure relief port 60 through the pressure relief fixing part 62, and finally closes the pressure relief port 60.

[0197] In some embodiments of this application, when the pressure relief member 61 closes the pressure relief port 60, the reset member still accumulates elastic potential energy and tends to drive the second locking part to continue moving, so that the second locking part and the first locking part can be stably kept in the locked state. In addition, during the above process, the reset member still tends to drive the pressure relief rod 63 to continue moving, and the pressure relief rod 63 causes the pressure relief fixing part 62 and the pressure relief member 61 to continue moving. This ensures that when the pressure relief member 61 closes the pressure relief port 60, the pressure relief member 61 can press the pressure relief port 60 tightly, ensuring the sealing of the pressure relief member 61 when closing the pressure relief port 60.

[0198] The above technical solutions effectively ensure the airtightness of the low-pressure storage device 1 when the door 4 is closed.

[0199] In some embodiments of this application, the reset element is a torsion spring 64. The torsion spring 64 includes a torsion spring body 640, a first torsion arm 641, and a second torsion arm 642. The torsion spring body 640 is connected to the end of the door frame 42 near the first locking member 721 (the end of the door frame 42 away from the second housing sidewall), and the central axis of the torsion spring body 640 is the first central axis A. The first torsion arm 641 engages with the door frame 42, and the second torsion arm 642 engages with the first locking member 721.

[0200] The first torsion arm 641 includes a first arm 6411 and a second arm 6412. One end of the first arm 6411 is connected to the torsion spring body 640, and the other end is connected to the second arm 6412. The second arm 6412 extends along the first central axis A. Optionally, the second arm 6412 is formed by bending the end of the first arm 6411 away from the torsion spring body 640 and extending it along the first central axis A.

[0201] In some embodiments of this application, the torsion spring 64 connects the door frame 42 to the first locking member 721 via a fastening assembly.

[0202] The fastening assembly includes a fixing post 51, which is located on the end of the door frame 42 near the first locking member 721, and the torsion spring body 640 is fitted onto the fixing post 51.

[0203] The fastening assembly includes a fixing hole 52 located on the end of the door frame 42 near the first locking member 721. The fixing hole 52 is located near the fixing post 51. The second arm 6412 of the torsion spring 64 is mounted within the fixing hole 52.

[0204] The above technical solution uses a fixing post 51 to fix the main body 640 of the torsion spring and a fixing hole 52 to fix the second arm 6412, ensuring the connection strength between the torsion spring 64 and the door frame 42.

[0205] The fastening assembly includes a recess 53, which is formed on the end of the door body 4 near the first locking member 721. The fixing post 51 and the fixing hole 52 are both located on the inner wall of the recess 53 away from the first locking member 721.

[0206] The above technical solution places the fixing post 51 and the fixing hole 52 within the recess 53 to reduce the space occupied by the door body 4 along the first central axis A. Furthermore, the torsion spring 64 is located at the side end of the door body 4, reducing its obstruction of the middle area of ​​the door body 4 and effectively ensuring the effective viewing area and connectivity of the viewing zone. Additionally, the shared rotation axis of the torsion spring 64 and the first locking member 721 improves the consistency of the rotational movement of the components and increases the stability of the rotational movement.

[0207] In some embodiments of this application, the fastening assembly includes a fixing seat 54, which is disposed on the side of the first locking member 721 near the door frame 42. The fixing seat 54 corresponds to and is installed within the recess 53. The outer peripheral wall of the fixing seat 54 engages with the inner peripheral wall of the recess 53, and the end of the fixing seat 54 away from the first locking member 721 abuts against the inner wall of the recess 53 away from the first locking member 721.

[0208] The above technical solutions reduce the space occupied by components located on the side of the door frame 42 away from the second shell sidewall, thus reducing the obstruction of the transparent part 41. Furthermore, the above technical solutions make full use of the obstruction area occupied by the door frame 42, avoiding increased obstruction of the transparent part 41 due to the installation of the torsion spring 64.

[0209] The mounting base 54 is fitted onto the torsion spring 64. The second arm 6412 of the torsion spring 64 cooperates with the mounting base 54 so that the torsion spring 64 acts on the first locking member 721 and the door frame 42.

[0210] In some embodiments of this application, the fastening assembly includes a fastening connector 55. The fastening connector 55 includes a fastening post 551 and a stop 552 located at one end of the fastening post 551. The fastening post 551 passes through the first locking member 721 and the fixing post 51 (torsion spring 64, fixing seat 54) to connect the first locking member 721, the door frame 42 and the torsion spring 64. The stop 552 is located on the side of the first locking member 721 away from the door frame 42.

[0211] In some embodiments of this application, the first locking member 721 has a countersunk hole 74 on the side away from the door frame 42, and the stop 552 of the fastening connector 55 is received in the countersunk hole 74. This reduces the space occupied by the door body 4 along the first central axis A.

[0212] As an alternative configuration, the fastening connector 55 is provided as a screw. The first locking member 721 is fixedly connected to the door frame 42 by the screw. These screws are readily available, and the fixing is simple, convenient, and quick.

[0213] In some embodiments of this application, the fastening assembly includes a fastening washer 56. The fastening washer 56 is located on the side of the first locking member 721 away from the door frame 42 (located within the countersunk hole 74), and the stop block 552 cooperates with the fastening washer 56. That is, the fastening washer 56 is fixed between the fastening head and the first locking member 721. In the above technical solution, the fastening washer 56 is used to increase the friction between the stop block 552 and the fastening washer, preventing the fastening connector 55 from loosening.

[0214] In some embodiments of this application, the fixing base 54 includes a first fixing plate 541 and a second fixing plate 542. The first fixing plate 541 includes a first support plate 5411 and a second support plate 5412. The first support plate 5411 is arc-shaped and is used to cooperate with the outer periphery of the torsion spring body 640 fitted onto the fixing post 51. The second support plate 5412 is straight and extends outward from one end of the first support plate 5411.

[0215] The second fixing plate 542 is arc-shaped. The second fixing plate 542 and the first support plate 5411 are concentric circles. There is a first gap between the second fixing plate 542 and the end of the first support plate 5411 away from the second support plate 5412, and there is a second gap between the second fixing plate 542 and the second support plate 5412.

[0216] After the fixing seat 54 is fitted onto the fixing post 51, the torsion spring body 640 is located around the fixing post 51 and is located near the inner perimeter of the first support plate 5411 and the second fixing plate 542 close to the fixing post 51. The first arm 6411 of the first torsion arm 641 of the torsion spring 64 passes through the first gap, and the second arm 6412 of the torsion spring 64 passes through the second gap.

[0217] The above technical solution effectively fixes the torsion spring 64 on the one hand, and ensures the torsion space of the torsion spring 64 on the other hand.

[0218] In some embodiments of this application, the first fixing plate 541 includes a third support plate 5413. The third support plate 5413 is located at the end of the second support plate 5412 away from the first support plate 5411. The third support plate 5413 is formed by bending the end of the second support plate 5412 away from the first support plate 5411 toward the other end of the first support plate 5411 (the end of the first support plate 5411 away from the second support plate 5412). The third support plate 5413 is used to cooperate with the end of the second torsion arm 642 away from the torsion spring body 640 to further position the torsion spring 64, limit the amount of rotation of the torsion spring 64 as a whole relative to the fixing post 51, and enable the torsion spring 64 to torsion efficiently under the action of external force.

[0219] In some embodiments of this application, the first locking member 721 rotates to lock or unlock the second locking part 72 with the first locking part 71. Simultaneously, the first locking member 721 drives the pressure relief rod 63 to rotate synchronously, and the pressure relief rod 63 drives the pressure relief fixing part 62 and the pressure relief member 61 to rotate around the first central axis A to open or close the pressure relief port 60; at the same time, the first locking member 721 acts on the torsion spring 64, causing the torsion spring 64 to deform to accumulate or release elastic potential energy. The specific operation process is as follows:

[0220] Definition: The direction in which the second locking part 72 rotates clockwise is denoted as the first clockwise direction. The second locking part 72 is located on the side away from the second shell sidewall and faces the second shell sidewall.

[0221] When the door 4 transitions from the open state to the closed state, the first locking member 721 rotates around the first central axis A in the first clockwise direction, and drives the pressure relief rod 63 to rotate synchronously; the pressure relief rod 63 drives the pressure relief fixing part 62 and the pressure relief member 61 to rotate around the first central axis A in the first clockwise direction, so that the pressure relief member 61 is close to the pressure relief port 60; at the same time, the first locking member 721 interacts with the door frame 42, the deformation of the torsion spring 64 decreases, the torsion spring 64 releases elastic potential energy, so as to drive the first locking member 721 to rotate in the first clockwise direction, and drive the pressure relief rod 63 into the pressure relief member 61 to move.

[0222] When the second locking part 72 locks with the first locking part 71, the door body 4 locks with the housing 3, and the pressure relief member 61 presses against the pressure relief port 60 to close the pressure relief port 60. At this time, the torsion spring 64 still accumulates elastic potential energy and still has the tendency to drive the pressure relief rod 63 to continue moving. The pressure relief rod 63 also causes the pressure relief fixing part 62 and the pressure relief member 61 to continue moving. This ensures that when the pressure relief member 61 closes the pressure relief port 60, it can press against the pressure relief port 60, ensuring the sealing of the pressure relief member 61 when closing the pressure relief port 60.

[0223] When the door 4 transitions from the closed state to the open state, the first locking member 721 rotates around the first central axis A in a direction opposite to the first clockwise direction, and drives the pressure relief rod 63 to rotate synchronously. The pressure relief rod 63 drives the pressure relief fixing part 62 and the pressure relief member 61 to rotate around the first central axis A in a direction opposite to the first clockwise direction, so that the pressure relief member 61 opens the pressure relief port 60. At the same time, the first locking member 721 interacts with the door frame 42, the deformation of the torsion spring 64 increases, and the torsion spring 64 accumulates elastic potential energy.

[0224] In the above technical solution, the second locking part 72 includes a first locking member 721 that can rotate around the first central axis A, so as to directly drive the pressure relief rod 63 to rotate around the first central axis A. The rotational movement of the first locking member 721 locks or unlocks the door 4 and the housing 3, and at the same time closes or opens the pressure relief port 60 of the pressure relief member 61, making the linkage between the locking assembly 7 and the pressure relief assembly more stable and consistent.

[0225] It should be noted that the locking assembly 7 is provided in two sets. In one set, the first locking part 71 is provided on the first shell side wall of the housing 3, and the corresponding second locking part 72 is provided on the corresponding side of the door body 4; in the other set, the first locking part 71 is provided on the second shell side wall of the housing 3, and the corresponding second locking part 72 is provided on the corresponding side of the door body 4.

[0226] The locking assembly 7 includes a handle 73. The handle 73 connects to two second locking parts 72 arranged along the first central axis A. The handle 73 drives the two second locking parts 72 to move synchronously, so that the second locking parts 72 lock or unlock synchronously with the first locking part 71 on the corresponding side.

[0227] In the above technical solution, the low-pressure storage device 1 is equipped with locking components 7 at both ends along the first central axis A to lock the door 4 and the housing 3 at both ends. The locking force is more evenly distributed, making the door 4 fit more tightly with the housing 3 when closed, effectively ensuring the airtightness of the low-pressure storage device 1.

[0228] In some embodiments of this application, the first locking member 721 includes a first locking strip 7211, a second locking strip 7212, and a third locking strip 7213 connected end to end in sequence.

[0229] The second locking strip 7212 is rotatably connected to the end of the door body 4. The first locking strip 7211 is connected to the end of the second locking strip 7212 away from the storage container 2.

[0230] Projected onto a plane perpendicular to the first central axis A, the first locking strip 7211, the second locking strip 7212, and the third locking strip 7213 are connected in sequence and form a triangle.

[0231] In some embodiments of this application, the first locking member 721 further includes a fourth locking strip 7214 located at the connection between the first locking strip 7211 and the third locking strip 7213. The fourth locking strip 7214 and the first locking strip 7211 are located on the same side of the third locking strip 7213, and the fourth locking strip 7214 and the first locking strip 7211 form an acute angle. The end of the fourth locking strip 7214 away from the third locking strip 7213 is fixed to the handle 73.

[0232] The above technical solution, through the setting of the first locking member 721, places the handle 73, which applies force to the first locking member 721, on the front side of the door body 4, making it convenient for the user to apply force to the handle 73. The handle 73 drives the first locking member 721 to move, so that the second locking part 72 locks or unlocks the first locking part 71. At the same time, the first locking member 721 drives the pressure relief rod 63 to rotate, so that the pressure relief fixing part 62 and the pressure relief member 61 rotate synchronously, so that the pressure relief member 61 closes the pressure relief port 60 when the second locking part 72 locks the first locking part 71, or opens the pressure relief port 60 when the second locking part 72 unlocks the first locking part 71.

[0233] In some embodiments of this application, the pressure relief rod 63 is connected to the first locking strip 7211. This connects the pressure relief assembly and the locking assembly 7 via the fixed linkage of the pressure relief rod 63 and the first locking strip 7211, allowing the pressure relief port 60 to open or close simultaneously when locking or unlocking the door 4 and the housing 3. This enables the user to complete both actions of the low-pressure storage device 1 with a single operation, facilitating user operation.

[0234] In some embodiments of this application, the second locking part 72 includes a second locking member. The second locking member is connected to the first locking member 721 and is located on the side of the first locking member 721 closer to the first locking part 71. When the first locking member 721 rotates about the first central axis A, it drives the second locking member to rotate coaxially, thereby locking or unlocking the second locking member with the first locking part 71. That is, the second locking part 72 is rotatably connected to the door body 4 about the first central axis A.

[0235] In the above technical solution, the second locking member of the second locking part 72 rotates synchronously with the first locking member 721, effectively ensuring the consistency and coordination of the movement.

[0236] In some embodiments of this application, the second locking part 72 includes a second locking member. The second locking member is disposed on the door body 4. When the first locking member 721 rotates about the first central axis A, it drives the second locking member to move, so that the second locking member locks or unlocks with the first locking part 71.

[0237] In one configurable manner, the second locking member is rotatably connected to the door body 4. The second locking member can rotate about a fourth central axis. The fourth central axis is parallel to the first central axis A. That is, the rotational central axis of the second locking member is not coaxial with the rotational central axis of the first locking member 721. When the first locking member 721 rotates about the first central axis A, its end near the second locking member interacts with the second locking member, causing the second locking member to rotate about the fourth central axis, thereby locking or unlocking the second locking member with the first locking part 71.

[0238] In the above technical solution, the second locking member locked with the first locking part 71 is driven to rotate by the rotatable first locking member 721. The locking or unlocking of the door 4 and the housing 3 is achieved through the two-stage rotational motion, so that the first locking member 721 that performs the first-stage rotational motion can be miniaturized.

[0239] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0240] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigeration device, characterized in that, include: The enclosure defines the storage space; A low-pressure storage device, which is housed within the storage chamber; A vacuum device for removing gas from the low-pressure storage device; The low-pressure storage device includes: case; The storage container can be pulled out or pushed into the housing; The door body includes: A transparent portion, one side of which is connected to the storage container; the transparent portion includes: A perspective section protrudes from the side away from the container, allowing the interior space of the container to be seen through the perspective section; A door frame that mates with the transparent portion; the door frame defines a viewing window opening that corresponds to the perspective portion; A pressure relief assembly is used to relieve pressure on a low-pressure storage device after the gas has been extracted by the extraction device; the pressure relief assembly is obscured by the lower frame of the door frame.

2. The refrigeration device according to claim 1, characterized in that, The surface of the transparent section near the storage container is designated as the first surface B1; the first surface B1 protrudes to the side away from the storage container.

3. The refrigeration device according to claim 1 or 2, characterized in that, The surface of the transparent section away from the container is designated as the second surface B2; the second surface B2 protrudes to the side away from the container.

4. The refrigeration device according to claim 3, characterized in that, At least a portion of the transparent portion protrudes to the side of the plane where the viewing window opening is located, away from the storage container; The plane containing the opening of the view window is denoted as the view window plane P; The point at which the distance between the second surface B2 of the perspective section and the viewing window plane P is the maximum is denoted as the first point a; The distance between the first point a and the viewport plane P is denoted as the first distance J; where 2mm≤J≤7mm.

5. The refrigeration apparatus according to claim 1 or 2, characterized in that, The transparent section is located on the side of the plane where the viewing window opening is located, closer to the storage container; The door includes a viewing window; the viewing window is located at the opening of the viewing window.

6. The refrigeration apparatus according to claim 5, characterized in that, The viewing window and the door frame together define the front surface of the door body located on the side away from the storage container; The surface with the largest distance between the front surface of the door and the rear wall of the housing is denoted as the third surface B3, and the third surface B3 is a plane.

7. The refrigeration apparatus according to claim 1, 2, 4, or 6, characterized in that, The door frame includes a lower frame located below the window opening; the transparent portion and the lower frame cooperate to define a receiving cavity; The pressure relief assembly includes: A pressure relief channel is used to connect the inner and outer sides of the low-pressure storage device; the pressure relief channel includes: The pressure relief port, facing away from the storage container, is used to connect to the outside of the low-pressure storage device. A pressure relief device is located within the receiving cavity on the side of the pressure relief port away from the storage container; A pressure relief rod is rotatably connected to the door body and fixedly connected to the pressure relief component; the pressure relief rod is located inside the receiving cavity and can rotate about a first central axis relative to the door body; The central axis of the pressure relief rod is referred to as the second central axis; In the projection of the plane containing the rear wall of the housing, the straight line perpendicular to the first central axis is denoted as the first direction line L1; the dimension of the door body on the first direction line L1 is denoted as the door body height H0; when the pressure relief component closes the pressure relief port, the distance between the second central axis and the lower edge of the door body is denoted as the second distance H2; Where 0.2≤H2:H0≤0.

5.

8. The refrigeration apparatus according to claim 7, characterized in that, In the projection of the plane containing the rear wall of the housing, the distance between the first central axis and the lower edge of the door body is denoted as the first distance H1; Where 1.2≤H1:H2≤1.

5.

9. The refrigeration apparatus according to claim 7, characterized in that, The low-pressure storage device includes a locking assembly; the locking assembly includes: A first locking part is provided on the housing; The second locking part is used to cooperate with the first locking part to lock or unlock the door body from the housing. The pressure relief rod is connected to the second locking part; When the second locking part is locked or unlocked with the first locking part, the second locking part drives the pressure relief rod to rotate, and the pressure relief rod drives the pressure relief component to rotate, so that the pressure relief component opens or closes the pressure relief port.

10. A refrigeration device, characterized in that, include: The enclosure defines the storage space; A low-pressure storage device, which is housed within the storage chamber; A vacuum device for removing gas from the low-pressure storage device; The low-pressure storage device includes: case; The storage container can be pulled out or pushed into the housing; The door body includes: A transparent portion, which is connected to the storage container; the transparent portion includes: A perspective section protrudes from the side away from the container, allowing the interior space of the container to be seen through the perspective section; A door frame that mates with the transparent portion; the door frame surrounds the transparent portion; A pressure relief assembly is used to relieve pressure on a low-pressure storage device after the gas has been extracted by the extraction device; the pressure relief assembly is concealed by the lower frame of the door frame; In the projection of the plane containing the rear wall of the housing, the straight line perpendicular to the first central axis is denoted as the first direction line L1; the dimension of the door body on the first direction line L1 is denoted as the door body height H0; the distance between the lower edge of the transparent part and the lower edge of the door body is denoted as the third distance H3. Where 0.2≤H3:H0≤0.6.

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