Refrigerator

Abstract

The invention discloses a refrigerator, belongs to the technical field of refrigeration equipment, and aims to solve the technical problem of long time consumption in the process of opening a vacuum drawer. According to the refrigerator, the pressure relief structure is arranged on the top wall of the chamber, the limiting guide rail is arranged on the side wall of the chamber, the lifting rail is arranged on the outer side wall of the drawer, and in the process that the vacuum drawer is gradually pulled out, the limiting matching pieces at the two ends of the cover body are matched with the limiting guide rail, so that the cover body and the vacuum drawer synchronously move forwards; the pressure relief piece on the upper cover assembly is matched with the pressure relief structure to open the pressure relief hole in the cover body for pressure relief; and after pressure relief is completed and when the limiting matching piece moves to the front end of the limiting guide rail, the guiding matching piece is gradually matched with the lifting rail, so that the front end of the cover body moves upwards, and a taking and placing opening of the vacuum drawer is opened. In the process that the vacuum drawer is pulled out, the actions of pressure relief and cover body lifting are synchronously achieved, the time consumed in the whole process is only the time consumed for pulling out the drawer, and the time needed for opening the vacuum drawer is shortened.

Description

Technical Field

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

[0002] A vacuum refrigerator is a type of refrigerator that uses vacuum technology to improve food storage conditions. A vacuum refrigerator has a vacuum drawer inside the refrigerator. A vacuum pump removes air from the drawer, creating a vacuum or low-pressure environment. This reduces the oxygen content inside the drawer, and the low-oxygen environment helps slow down the oxidation process of food, inhibiting the growth of bacteria and mold, thereby extending the shelf life of food.

[0003] In related technologies, a food preservation vacuum drawer includes a top cover, a vacuum drawer, and a pressure relief structure. The top cover is slidably connected to the vacuum drawer to open or close the vacuum drawer. The pressure relief structure is located on the top cover. After the pressure is released from the closed chamber formed by the vacuum drawer and the top cover, the vacuum drawer is pulled out to separate the vacuum drawer from the top cover, thereby opening the top opening of the vacuum drawer to retrieve the items inside.

[0004] However, the vacuum drawer for food preservation needs to be depressurized before it can be pulled out. This process involves multiple steps, is complex, and time-consuming. Summary of the Invention

[0005] This application provides a refrigerator that solves the technical problem of long opening time for the vacuum drawer in related refrigerators.

[0006] In a first aspect, embodiments of this application provide a refrigerator, comprising:

[0007] The cabinet has a refrigeration compartment with an opening on the front side. The side wall of the refrigeration compartment is constructed with a limiting guide rail, which extends along the depth direction of the cabinet.

[0008] The pressure relief structure is installed on the top wall of the refrigeration compartment, and the bottom of the pressure relief structure has a pressure relief guide surface that extends downward from back to front.

[0009] The vacuum drawer forms a storage cavity with an opening at the top for taking out and putting in. The vacuum drawer is installed in the refrigeration compartment through the opening. The side of the vacuum drawer facing the side wall of the compartment is equipped with a lifting rail, which extends upward at an angle from front to back.

[0010] A top cover assembly, disposed within the refrigeration room, and configured to open or close the access port; the top cover assembly includes:

[0011] The cover has a limiting fitting and a guide fitting at its width end. The guide fitting is located in front of the limiting fitting. The limiting fitting moves relative to the limiting guide rail, and the guide fitting moves relative to the lifting rail. The cover has a pressure relief hole.

[0012] The pressure relief component includes a connected sealing part and a pressure rod part; the pressure relief component is rotatably connected to the cover body so that the sealing part can open or close the pressure relief hole.

[0013] Among them, the pressure rod part presses against the pressure relief guide surface during part of the stroke range of the vacuum drawer being pulled out, and rotates under the pressure of the pressure relief guide surface to open the pressure relief hole of the sealing part;

[0014] Before the pressure rod separates from the pressure relief guide surface, the limiting fitting moves forward along the limiting guide rail; after the pressure rod separates from the pressure relief guide surface, and the limiting fitting engages with the front stop of the limiting guide rail, the guiding fitting moves upward relative to the vacuum drawer along the lifting rail, so that the cover moves upward relative to the vacuum drawer and opens the loading and unloading port.

[0015] In the refrigerator of this application embodiment, during the process of gradually pulling the vacuum drawer out from the closed state, the pressure relief and lid lifting actions are realized simultaneously. The entire process takes only the time required to pull out the vacuum drawer, thus shortening the time required to open the vacuum drawer.

[0016] In some embodiments of this application, a retaining rail is also provided on the side of the vacuum drawer facing the side wall of the compartment. The retaining rail extends along the depth direction of the box and the front end of the retaining rail is connected to the rear end of the lifting rail.

[0017] When the vacuum drawer is pulled out, the guide fitting moves from the rear end of the lifting rail into the retaining rail for relative displacement.

[0018] This design allows the retaining rail to support the guide fittings, ensuring that the lid remains at the raised height after being lifted, thus reducing interference from the lid on the drawer's continued pull-out action.

[0019] In some embodiments of this application, the bottom of the pressure relief structure is further provided with a support guide surface, which extends along the depth direction of the housing, and the rear end of the support guide surface is connected to the front end of the pressure relief guide surface.

[0020] When the top of the pressure bar moves to the front end of the pressure relief guide surface, there is a gap between the limiting fitting and the front end of the limiting guide rail;

[0021] When the vacuum drawer is pulled out, the top of the pressure rod moves from the front end of the pressure relief guide surface to engage with the support guide surface.

[0022] With this configuration, the support guide surface keeps the pressure rod at the second height, so that when the vacuum drawer is closed, the pressure rod can move backward along the support guide surface to the pressure relief guide surface, making it easier for the pressure rod to return to the first height, that is, to return the pressure relief component to the position where the sealing part closes the pressure relief hole.

[0023] In some embodiments of this application, the bottom of the pressure relief structure is further provided with a clearance surface, and the front end of the clearance surface is connected to the rear end of the pressure relief guide surface;

[0024] When the pressure relief hole is sealed, the top of the pressure rod is located below the clearance surface.

[0025] With this configuration, when the sealing part closes the pressure relief hole, the top of the pressure rod is located below the clearance surface, so that the pressure rod and the pressure relief structure are spaced apart, reducing the possibility that the top of the pressure rod will be subjected to downward pressure from the pressure relief structure. This allows the sealing part to remain in the position of sealing the pressure relief hole, improving the sealing effect of the vacuum drawer when it is closed.

[0026] In some embodiments of this application, a first elastic member is provided between the cover and the side wall of the compartment. The first elastic member is configured to apply a forward pulling force to the cover so that when the limiting fitting member moves to the front end of the limiting guide rail, the limiting fitting member is held in a position that engages with the front end stop of the limiting guide rail.

[0027] With this configuration, when the limiting engagement component moves to the front end of the limiting guide rail, the first elastic element keeps the limiting engagement component in a position that engages with the front stop of the limiting guide rail, so that when the vacuum drawer is closed, the vacuum drawer can push the lid to move backward synchronously, so that the lid can be reset synchronously with the closing process of the vacuum drawer.

[0028] In some embodiments of this application, a connecting post is provided at the end of the cover along the width direction, and the axis of the connecting post extends along the width direction of the box.

[0029] The first elastic element includes a tension spring, the front end of which is connected to the side wall of the compartment, and the rear end of which is connected to the connecting column.

[0030] With this configuration, the end of the tension spring connected to the connecting column moves forward under the elastic restoring force of the tension spring, thereby applying a forward pulling force to the connecting column. This ensures that when the limiting fitting moves to the front end of the limiting guide rail, the limiting fitting is held in a position where it engages with the front stop of the limiting guide rail.

[0031] In some embodiments of this application, the cover assembly further includes a second elastic member, which is connected to the cover body and the pressure relief member respectively. The second elastic member is configured to apply a spring force to the pressure relief member to rotate the sealing part toward the pressure relief hole, so that the sealing part closes the pressure relief hole.

[0032] With this configuration, the second elastic element applies a spring force to the pressure relief element, causing the sealing part to rotate toward the pressure relief hole. After the downward pressure applied to the top of the pressure rod by the pressure relief structure is released, the pressure relief element can rotate the sealing part toward the pressure relief hole under the spring force of the second elastic element, thus sealing the pressure relief hole.

[0033] In some embodiments of this application, the pressure relief component further includes a connecting shaft, which is rotatably connected to the cover, and the sealing part and the pressure rod part are respectively connected to the connecting shaft;

[0034] The second elastic element includes a torsion spring, which includes a spring body, a first torsion arm, and a second torsion arm. The spring body is sleeved on the outside of the connecting shaft. The first torsion arm and the second torsion arm are respectively connected to the two ends of the spring body. The first torsion arm is connected to the cover, and the second torsion arm is connected to the sealing part or the pressure rod part.

[0035] With this configuration, when the top of the pressure rod is subjected to downward pressure from the pressure relief structure and rotates downward, the first and second torsion arms undergo elastic torsional deformation around the axis of the spring body and store torsional potential energy. When the downward pressure applied to the top of the pressure rod by the pressure relief structure is released, the torsion spring releases the torsional potential energy and drives the pressure relief component to rotate in the opposite direction until it returns to the state when the sealing part blocks the pressure relief hole.

[0036] In some embodiments of this application, the housing includes:

[0037] The liner has a refrigeration compartment and a side wall.

[0038] The side guide rail is fixedly installed on the side wall of the gallbladder, and a limit guide rail is constructed on the side of the side guide rail away from the side wall where it is located.

[0039] This design, with the limiting guide rail integrated into the side guide rail, reduces the structural complexity of the box liner, simplifies its structure, and improves its manufacturing efficiency.

[0040] Secondly, embodiments of this application provide a refrigerator, comprising:

[0041] The cabinet has a refrigeration compartment with an opening on the front side. The side wall of the refrigeration compartment is constructed with a limiting guide rail, which extends along the depth direction of the cabinet.

[0042] The pressure relief structure is installed on the top wall of the refrigeration compartment, and the bottom of the pressure relief structure has a pressure relief guide surface that extends downward from back to front.

[0043] The vacuum drawer forms a storage cavity with an opening at the top for taking out and putting in. The vacuum drawer is installed in the refrigeration compartment through the opening. The side of the vacuum drawer facing the side wall of the compartment is equipped with a lifting rail, which extends upward at an angle from front to back.

[0044] A top cover assembly, disposed within the refrigeration room, and configured to open or close the access port; the top cover assembly includes:

[0045] The cover has a limit fitting and a guide fitting at its width end. The limit fitting moves relative to the limit guide rail, and the guide fitting moves relative to the lifting rail. The cover has a pressure relief hole.

[0046] The pressure relief component includes a connected sealing part and a pressure rod part; the pressure relief component is rotatably connected to the cover body so that the sealing part can open or close the pressure relief hole.

[0047] When the vacuum drawer is closed, the top of the pressure rod is located behind the pressure relief guide surface, the sealing part closes the pressure relief hole, the limiting fitting part cooperates with the rear end of the limiting guide rail, and the cover closes the take-out port and sucks into the vacuum drawer.

[0048] As the vacuum drawer is gradually pulled out from the closed state to the first position, the top of the pressure rod part presses against the pressure relief guide surface and moves forward along the pressure relief guide surface. The sealing part opens the pressure relief hole, the limiting fit part moves forward along the limiting guide rail, and the cover closes to the take-out port.

[0049] When the vacuum drawer is pulled out to the first position, the top of the pressure rod moves to the front end of the pressure relief guide surface, and the limiting fitting moves to the front end of the limiting guide rail or has a gap with the front end of the limiting guide rail.

[0050] When the vacuum drawer is pulled out until the limiting fitting engages with the front stop of the limiting guide rail, continue pulling the vacuum drawer forward. The guide fitting moves upward relative to the vacuum drawer along the lifting rail, and the cover moves upward relative to the vacuum drawer and opens the retrieval port.

[0051] In the refrigerator of this application embodiment, during the process of gradually pulling the vacuum drawer out from the closed state, the pressure relief and lid lifting actions are realized simultaneously. The entire process takes only the time required to pull out the vacuum drawer, thus shortening the time required to open the vacuum drawer. Attached Figure Description

[0052] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0053] Figure 1 This is a schematic diagram of the structure of a refrigerator according to an embodiment of this application;

[0054] Figure 2 This is a schematic diagram of the refrigerator in the embodiment of this application when the vacuum drawer is closed;

[0055] Figure 3 This is a schematic diagram of the refrigerator in the present application embodiment when the vacuum drawer is in the open state;

[0056] Figure 4 for Figure 2 Sectional view along the middle AA direction;

[0057] Figure 5 for Figure 3 Sectional view along the BB direction;

[0058] Figure 6 This is a partial exploded structural diagram of the vacuum drawer, top cover assembly, side guide rails, and pressure relief structure in a refrigerator according to an embodiment of this application.

[0059] Figure 7 This is a schematic diagram of the structure of the refrigerator cover according to an embodiment of this application;

[0060] Figure 8 This is a schematic diagram of the pressure relief component and torsion spring in a refrigerator according to an embodiment of this application. Figure 1 ;

[0061] Figure 9 This is a schematic diagram of the pressure relief component and torsion spring in a refrigerator according to an embodiment of this application. Figure 2 ;

[0062] Figure 10 for Figure 4 A magnified view of a portion of point P1 in the middle;

[0063] Figure 11 for Figure 5 A magnified view of a portion of point P2 in the middle;

[0064] Figure 12 This is a schematic diagram of the pressure relief structure in a refrigerator according to an embodiment of this application;

[0065] Figure 13 This is a schematic diagram of the refrigerator in an embodiment of this application when the vacuum drawer is depressurized;

[0066] Figure 14 for Figure 13 A magnified view of a portion of point P3 in the middle;

[0067] Figure 15 for Figure 4 A schematic diagram of the structure after the inner liner has been removed;

[0068] Figure 16 for Figure 15 A cross-sectional view along the CC direction;

[0069] Figure 17 for Figure 16 A schematic diagram of the structure of the limiting fit component after it moves forward along the limiting guide rail;

[0070] Figure 18 for Figure 17 A schematic diagram of the structure as the vacuum drawer continues to be pulled forward;

[0071] Figure 19 for Figure 5 A schematic diagram of the structure after the inner liner has been removed;

[0072] Figure 20 for Figure 19 Sectional view along the DD direction.

[0073] Explanation of reference numerals in the attached figures:

[0074] 10-Enclosure; 110-Shell; 120-Inner liner; 121-Opening; 122-Refrigeration compartment; 130-Side rail; 131-Limiting rail;

[0075] 20 - Pressure relief structure; 210 - Pressure relief guide surface; 220 - Support guide surface; 230 - Clearance surface;

[0076] 30 - Vacuum drawer; 310 - Drawer body; 311 - Access opening; 312 - Storage cavity; 313 - Lifting rail; 314 - Retaining rail; 320 - Drawer door;

[0077] 40 - Top cover assembly; 410 - Cover body; 411 - Guide fitting; 412 - Pressure relief hole; 413 - Sealing strip; 414 - Limiting fitting; 415 - Connecting post; 420 - Pressure relief component; 421 - Sealing part; 4211 - Connecting plate; 4212 - Plug; 422 - Pressure rod part; 423 - Connecting shaft; 430 - Second elastic element; 431 - Spring body; 432 - First torsion arm; 433 - Second torsion arm;

[0078] 50 - First elastic element. Detailed Implementation

[0079] 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.

[0080] 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.

[0081] 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.

[0082] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0083] As stated in the background section, refrigerators in related technologies suffer from a problem where the vacuum drawer takes a long time to open. The inventors discovered that this issue arises because when the vacuum drawer is closed, the top cover is locked to the top opening of the drawer. Because the vacuum pump has drawn air from inside the drawer, the interior is a vacuum or negative pressure environment, causing the top cover to adhere tightly. To pull the drawer out, the drawer needs to be depressurized first to ensure the internal pressure is roughly equal to the external pressure of the top cover. Only then can the seal be released, allowing the drawer to be pulled out. Therefore, the drawer needs to be depressurized before it can be pulled out, and the total time required is the sum of the time spent depressurizing and the time spent pulling the drawer out, resulting in the long opening time for the vacuum drawer.

[0084] To address the aforementioned technical problems, this application provides a refrigerator with a pressure relief structure on the top wall of the compartment, a limiting guide rail on the side wall of the compartment, and a lifting rail on the outer wall of the drawer. During the gradual pulling out of the vacuum drawer, the limiting fittings at both ends of the lid engage with the limiting guide rail to allow the lid and vacuum drawer to move forward synchronously. Simultaneously, the pressure relief component on the top cover assembly engages with the pressure relief structure to open the pressure relief hole on the lid for pressure relief. After pressure relief is complete, as the vacuum drawer continues to be pulled out, when the limiting fitting moves to the front end of the limiting guide rail, the lid cannot move further forward due to the stop action at the front end of the limiting guide rail. When the drawer continues to be pulled out, only the drawer is pulled out. The guiding fitting engages with the lifting rail to allow the front end of the lid to move upwards relative to the drawer along the lifting rail, opening the retrieval and placement opening of the vacuum drawer for easy access to items. Therefore, the refrigerator of this application embodiment simultaneously achieves pressure relief and lid lifting during the gradual pulling out of the drawer. The entire process takes only the time required to pull out the drawer, thus shortening the time required to open the vacuum drawer.

[0085] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0086] refer to Figure 1 , Figure 2 and Figure 3 The refrigerator of this application embodiment may include a cabinet 10 having a cooling compartment 122, a vacuum drawer 30 that is removably disposed in the cooling compartment 122, a top cover assembly 40 for opening or closing the top access port 311 of the vacuum drawer 30, and a refrigeration device disposed in the cabinet 10 for supplying cold air to the cooling compartment 122.

[0087] refer to Figure 2 and Figure 3 An opening 121 may be formed on the front side of the refrigeration chamber 122, and the opening 121 is connected to the refrigeration chamber 122.

[0088] It should be noted that, in the embodiments of this application, "front side" refers to the side of the refrigerator facing the user when it is in normal use, that is... Figure 2 The positive direction of the depth Y of the middle cabinet 10 is "front". "Rear side" refers to the side opposite to the front, that is, the side of the refrigerator that faces away from the user during normal use. Figure 2 The negative direction of the depth direction Y of the middle box 10 is "rear".

[0089] It is understood that the number of refrigeration compartments 122 can be one, two, or more than three. Refrigeration compartments 122 can be configured as refrigerators, freezers, or variable temperature compartments with internal temperature variations.

[0090] The refrigeration compartment 122 may have two compartment side walls that are opposite to each other and spaced apart along the width direction X of the housing 10.

[0091] The refrigeration compartment 122 may also have a top wall and a bottom wall that are opposite to and spaced apart along the height Z direction of the housing 10. The top wall is located above the bottom wall.

[0092] The refrigeration compartment 122 may also have a rear wall, which is opposite to and spaced apart from the opening 121 along the depth direction Y of the housing 10.

[0093] The top wall, bottom wall, rear wall, and two side walls of the compartment enclose the refrigeration compartment 122.

[0094] refer to Figure 1The housing 10 may include a liner 120 and a shell 110. The liner 120 may be configured to have a cooling compartment 122 and an opening 121. The shell 110 is attached to the outside of the liner 120 to form the appearance of the housing 10.

[0095] In an implementation where there are multiple refrigeration compartments 122, at least some of the refrigeration compartments 122 may be equipped with vacuum drawers 30. The vacuum drawers 30 are removably installed in the refrigeration compartment 122 via openings 121. Exemplarily, the vacuum drawers 30 may be slidably connected to the side wall of the compartment, and the sliding direction of the vacuum drawers 30 relative to the side wall of the compartment may be along the depth direction Y of the housing 10, so that the vacuum drawers 30 can slide relative to the side wall of the compartment along the depth direction Y of the housing 10.

[0096] In an implementation where a vacuum drawer 30 is provided in part of the refrigeration compartment 122, the refrigerator may also include a door, which is rotatably connected to the body 10 to at least open or close the refrigeration compartment 122 that is not provided with a vacuum drawer 30.

[0097] The vacuum drawer 30 may be constructed with a storage cavity 312 having a top opening 311 for taking out or removing items. When the vacuum drawer 30 is pulled out, items can be placed into or taken out of the storage cavity 312 through the opening 311.

[0098] refer to Figure 3 The vacuum drawer 30 may include a drawer body 310 and a drawer door 320. The drawer body 310 is slidably disposed in the refrigeration compartment 122 via an opening 121. The drawer door 320 is disposed on the front side of the drawer body 310. The drawer body 310 may be configured to form an access opening 311 and a storage cavity 312, or the access opening 311 and the storage cavity 312 may be enclosed by the drawer door 320.

[0099] In some possible implementations of the embodiments of this application, a portion of the drawer door 320 may constitute part of the exterior surface of the refrigerator, that is, when the vacuum drawer 30 is closed, a portion of the drawer door 320 faces the user.

[0100] In some other possible implementations of this application, a cabinet door may also be provided on the outside of the drawer door 320, and the cabinet door constitutes part of the exterior surface of the refrigerator. That is, when both the vacuum drawer 30 and the cabinet door are closed, the cabinet door is located on the front side of the drawer door 320, and the cabinet door faces the user.

[0101] refer to Figure 3 The top cover assembly 40 is disposed in the refrigeration compartment 122 and is configured to open or close the access port 311.

[0102] refer to Figure 2 and Figure 4When the vacuum drawer 30 is closed, the top cover assembly 40 closes to the access port 311 to seal the storage cavity 312.

[0103] refer to Figure 3 and Figure 5 When the vacuum drawer 30 is in the open state, the top cover assembly 40 at least partially opens the access port 311 to facilitate placing or removing items into or from the storage cavity 312 via the access port 311.

[0104] The refrigerator in this embodiment may also include a vacuum pump. The vacuum pump is used to draw air from the storage cavity 312 when the top cover assembly 40 is closed to the access port 311, so that the air pressure in the storage cavity 312 is reduced to below the standard atmospheric pressure, forming a vacuum or low-pressure environment. This low-pressure environment can reduce the oxygen content in the storage cavity 312, thereby slowing down the oxidation process of food in the storage cavity 312, delaying the growth of bacteria and mold, and thus extending the shelf life of food and achieving the function of food preservation.

[0105] In the refrigerator of this application embodiment, reference is made to Figure 4 and Figure 6 The cover assembly 40 may include a cover body 410 and a pressure relief component 420.

[0106] The cover 410 is used to open or close the opening 311.

[0107] In some possible implementations of the embodiments of this application, reference is made to Figure 4 and Figure 5 A sealing strip 413 may be provided on the bottom edge of the cover 410. When the cover 410 closes the opening 311, the sealing strip 413 undergoes elastic deformation and fills the gap between the vacuum drawer 30 and the cover 410, so as to improve the sealing effect of the cover 410 on the opening 311.

[0108] refer to Figure 7 The cover 410 has a pressure relief hole 412, and the axis of the pressure relief hole 412 can extend approximately along the height direction Z of the box 10.

[0109] refer to Figure 6 , Figure 8 and Figure 9 The pressure relief component 420 includes a sealing part 421 and a pressure rod part 422 connected to each other. The pressure relief component 420 is rotatably connected to the cover body 410 so that the sealing part 421 opens or closes the pressure relief hole 412.

[0110] In some possible implementations of the embodiments of this application, reference is made to Figure 8The sealing part 421 may include a connecting plate 4211 and a plug 4212. The connecting plate 4211 is connected to the pressure rod part 422. The plug 4212 is disposed on the bottom surface of the connecting plate 4211 and is used to open or close the pressure relief hole 412.

[0111] The pressure rod portion 422 can extend upwards and tilted from front to back, and the sealing portion 421 can be connected to the front end of the pressure rod portion 422. (Reference) Figure 4 and Figure 10 When the pressure relief component 420 rotates relative to the cover 410 until the sealing part 421 blocks the pressure relief hole 412, the top end of the pressure rod part 422 is at a first height. When the top end of the pressure rod part 422 is at the first height, pressing down on the top end of the pressure rod part 422 will cause the sealing part 421 to tilt upwards and open the pressure relief hole 412. (Reference) Figure 5 and Figure 11 When the top of the pressure rod 422 is pressed down to the second height, which is less than the first height, the sealing part 421 separates from the pressure relief hole 412, and the pressure relief hole 412 is fully opened.

[0112] refer to Figure 4 , Figure 6 and Figure 12 The refrigerator in this embodiment may further include a pressure relief structure 20, which is disposed on the top wall of the compartment. The bottom of the pressure relief structure 20 is provided with a pressure relief guide surface 210 that extends downward from back to front and faces the cover 410.

[0113] refer to Figure 13 and Figure 14 During the process of pulling out the vacuum drawer 30, the pressure rod part 422 is in partial travel range with the pressure relief guide surface 210 and rotates under the pressure of the pressure relief guide surface 210 to open the pressure relief hole 412 of the sealing part 421.

[0114] The top end of the pressure rod 422 can be a curved surface or an arc surface, with the curved or arc surface protruding upwards to reduce the contact area between the top end of the pressure rod 422 and the pressure relief structure 20, thereby reducing the frictional resistance when the top end of the pressure rod 422 slides relative to the pressure relief structure 20 and improving the smoothness of the sliding of the top end of the pressure rod 422 relative to the pressure relief structure 20.

[0115] refer to Figure 6 , Figure 15 and Figure 16 The side wall of the compartment can be constructed with a limiting guide rail 131, which extends along the depth direction Y of the box 10.

[0116] refer to Figure 6 , Figure 7 and Figure 16The cover 410 can be provided with limiting fitting parts 414 at both ends along the width direction X, and the limiting fitting parts 414 can be relatively displaced along the limiting guide rail 131.

[0117] In some possible implementations of the embodiments of this application, the limiting fitting 414 includes a first roller, the axis of which extends along the width direction X of the box 10. The first roller is rotatably connected to the cover 410, and the first roller is in rolling engagement with the limiting guide rail 131 to reduce the frictional force when the first roller moves relative to the limiting guide rail 131, thereby improving the smoothness of the movement of the cover 410 relative to the box 10.

[0118] In one embodiment of the enclosure 10 including the liner 120, the liner 120 may have two liner sidewalls that are opposite to each other and spaced apart along the width direction X of the liner 120. (See reference) Figure 6 The housing 10 may also include a side guide rail 130, which is fixedly mounted on the side wall of the inner chamber. A limiting guide rail 131 is constructed on the side of the side guide rail 130 away from the side wall of the inner chamber. Constructing the limiting guide rail 131 on the side guide rail 130 reduces the structural complexity of the inner chamber 120, simplifies the structure of the inner chamber 120, and improves the processing and manufacturing efficiency of the inner chamber 120.

[0119] refer to Figure 13 and Figure 14 Before the pressure rod part 422 separates from the pressure relief guide surface 210, the limiting mating part 414 moves forward along the limiting guide rail 131.

[0120] refer to Figure 6 and Figure 16 The side of the vacuum drawer 30 facing the side wall of the compartment may be equipped with a lifting rail 313, which extends upward at an angle from front to back.

[0121] refer to Figure 6 , Figure 7 and Figure 16 The cover 410 may be provided with guide fittings 411 at both ends along the width direction X. The guide fittings 411 are located in front of the limiting fittings 414 and the guide fittings 411 are relatively displaced along the lifting rail 313.

[0122] Talent test Figure 17 and Figure 18 After the pressure rod part 422 separates from the pressure relief guide surface 210, the guide mating part 411 moves upward relative to the vacuum drawer 30 along the lifting rail 313, so that the cover 410 moves upward relative to the vacuum drawer 30 and opens the take-out port 311.

[0123] refer to Figure 10 and Figure 16When the vacuum drawer 30 is closed, since the storage cavity 312 is not depressurized, the storage cavity 312 is in a low-pressure environment. The cover 410 is attracted to the top of the vacuum drawer 30 and closes the access port 311.

[0124] refer to Figure 14 As the vacuum drawer 30 is gradually pulled out from the closed state, the pressure lever 422 gradually presses against the pressure relief guide surface 210 and slides forward along it. Since the pressure relief guide surface 210 extends downwards and tilts from back to front, the top of the pressure lever 422 is gradually pressed down by the pressure relief guide surface 210, and the degree of pressure on the pressure lever 422 increases with the length of the vacuum drawer 30 pulled out. The sealing part 421 gradually opens the pressure relief hole 412 to release pressure. During this process, the cover 410 is attracted to the vacuum drawer 30, and the cover 410 is pulled out synchronously with the vacuum drawer 30. (Reference) Figure 16 and Figure 17 The limiting fitting 414 moves forward along the limiting guide rail 131 to guide the cover 410.

[0125] Depressurization is complete when the pressure lever 422 moves to the front end of the pressure relief guide surface 210. At this point, continue pulling the vacuum drawer 30 forward, referring to... Figure 17 When the limiting engagement 414 moves forward to the front end of the limiting guide rail 131, the cover 410 will not be able to move forward further due to the stop action at the front end of the limiting guide rail 131. When the drawer is pulled out further, only the drawer will be pulled out. Since the storage cavity 312 has been depressurized, the cover 410 will no longer engage with the vacuum drawer 30.

[0126] refer to Figure 18 Continue pulling the vacuum drawer 30 forward. The guide fitting 411 moves upward along the lifting rail 313 relative to the vacuum drawer 30, thereby driving the front end of the cover 410 to move upward, so that the front end of the cover 410 gradually moves upward and separates from the vacuum drawer 30, making it easier for the vacuum drawer 30 to be pulled out.

[0127] In other words, when the vacuum drawer 30 is closed, the top of the pressure rod 422 is located behind the pressure relief guide surface 210, the sealing part 421 seals the pressure relief hole 412, the limiting fitting part 414 engages with the rear end of the limiting guide rail 131, and the cover 410 seals the take-out port 311 and is attracted to the vacuum drawer 30.

[0128] refer to Figure 10 and Figure 14During the process of gradually pulling the vacuum drawer 30 out from the closed state to the first position, the top of the pressure rod part 422 abuts against the pressure relief guide surface 210 and moves forward along the pressure relief guide surface 210. The sealing part 421 opens the pressure relief hole 412, the limiting fitting part 414 moves forward along the limiting guide rail 131, and the cover 410 covers the take-out port 311.

[0129] When the vacuum drawer 30 is pulled out to the first position, the top of the pressure rod 422 moves to the front end of the pressure relief guide surface 210. At this time, the storage cavity 312 is depressurized and the limiting fitting 414 moves to the front end of the limiting guide rail 131 or has a gap with the front end of the limiting guide rail 131.

[0130] refer to Figure 17 When the vacuum drawer 30 is pulled out to the point where the limiting fitting 414 engages with the front stop of the limiting guide rail 131, the lid 410 will not be able to move forward further due to the stop action of the front end of the limiting guide rail 131. When the drawer is pulled out further, only the drawer will be pulled out. (Reference) Figure 18 Continue to pull the vacuum drawer 30 forward. The guide fitting 411 moves upward relative to the vacuum drawer 30 along the lifting rail 313. The front end of the cover 410 moves upward relative to the vacuum drawer 30 and opens the take-out port 311.

[0131] As can be seen, in the refrigerator of this application embodiment, during the process of gradually pulling the vacuum drawer 30 out from the closed state, the pressure relief and the lifting of the cover 410 are realized simultaneously. The entire process takes only the time required to pull out the vacuum drawer 30, thus shortening the time required to open the vacuum drawer 30.

[0132] In some possible implementations of the embodiments of this application, reference is made to Figure 6 and Figure 16 A first elastic element 50 may be provided between the cover 410 and the side wall of the compartment. The first elastic element 50 is configured to apply a forward pulling force to the cover 410 so that when the limiting engagement 414 moves to the front end of the limiting guide rail 131, the limiting engagement 414 is held in a position that engages with the front end stop of the limiting guide rail 131 so that when the vacuum drawer 30 is closed, the vacuum drawer 30 can push the cover 410 to move backward synchronously so that the cover 410 is reset synchronously with the closing process of the vacuum drawer 30.

[0133] Furthermore, the first elastic element 50 is configured to apply a forward pulling force to the cover 410, and can also pull the cover 410 forward with the vacuum drawer 30 before the limiting fitting 414 engages with the front stop of the limiting guide rail 131. When the cover 410 and the vacuum drawer 30 move forward synchronously, the first elastic element 50 applies a forward pulling force to the cover 410, reducing the external force required to open the vacuum drawer 30, making the vacuum drawer 30 easier to pull out.

[0134] In some embodiments, reference Figure 6 , Figure 7 and Figure 16 A connecting post 415 may be provided at the end of the cover 410 along the width direction X, and the axis of the connecting post 415 may extend along the width direction X of the box 10.

[0135] refer to Figure 6 The first elastic element 50 can be a tension spring, with its front end connected to the side wall of the compartment and its rear end connected to the connecting post 415. Since the end of the tension spring connected to the side wall of the compartment is fixed and is under tension, the end of the tension spring connected to the connecting post 415 moves forward under the elastic restoring force of the tension spring, thereby applying a forward pulling force to the connecting post 415. When the limiting engagement 414 moves to the front end of the limiting guide rail 131, the limiting engagement 414 is kept in a position that engages with the front stop of the limiting guide rail 131. This allows the vacuum drawer 30 to push the cover 410 backward synchronously when the vacuum drawer 30 is closed, so that the cover 410 is reset synchronously with the closing process of the vacuum drawer 30.

[0136] In other embodiments, the first elastic element 50 can be an elastic rubber band, with its front end connected to the side wall of the compartment and its rear end connected to the cover 410. The elastic rubber band is in a stretched state and applies a forward pulling force to the cover 410 so that when the limiting engagement 414 moves to the front end of the limiting guide rail 131, the limiting engagement 414 is held in a position that engages with the front end stop of the limiting guide rail 131, so that when the vacuum drawer 30 is closed, the vacuum drawer 30 can push the cover 410 to move backward synchronously, so that the cover 410 is reset synchronously with the closing process of the vacuum drawer 30.

[0137] In some possible implementations of the embodiments of this application, reference is made to Figure 6 , Figure 16 , Figure 19 and Figure 20 The vacuum drawer 30 is also provided with a retaining rail 314 on the side facing the side wall of the compartment. The retaining rail 314 extends along the depth direction Y of the box 10, and the front end of the retaining rail 314 is connected to the rear end of the lifting rail 313.

[0138] When the vacuum drawer 30 is pulled out, the guide fitting 411 moves from the rear end of the lifting rail 313 into the retaining rail 314 for relative displacement.

[0139] refer to Figure 18 When the vacuum drawer 30 is pulled forward, when the guide engagement 411 moves to the top of the lifting rail 313, if the vacuum drawer 30 is pulled forward further, the guide engagement 411 will move backward relative to the vacuum drawer 30 along the retaining rail 314 (see reference). Figure 20The retaining rail 314 increases the pull-out length of the vacuum drawer 30, thereby increasing the size of the access opening 311 exposed when the vacuum drawer 30 is pulled out, facilitating the retrieval and placement of items. Since the retaining rail 314 extends along the depth direction Y of the drawer body 10, it supports the guide fitting 411, preventing it from sliding down the lifting rail 313 and keeping the lid 410 at the raised height, thus reducing interference from the lid 410 with the drawer's continued pull-out action.

[0140] In some possible implementations of the embodiments of this application, reference is made to Figure 5 , Figure 11 and Figure 12 The bottom of the pressure relief structure 20 may also be provided with a support guide surface 220, which extends along the depth direction Y of the housing 10. The rear end of the support guide surface 220 is connected to the front end of the pressure relief guide surface 210. When the vacuum drawer 30 is pulled out, the top end of the pressure rod 422 moves from the front end of the pressure relief guide surface 210 to press against the support guide surface 220.

[0141] When the pressure rod 422 moves to the front end of the pressure relief guide surface 210, the pressure relief is completed. At this time, there is a gap between the front end of the limiting fitting 414 and the limiting guide rail 131. Although the storage cavity 312 has completed pressure relief, the cover 410 still closes to the access port 311. Continuing to pull the vacuum drawer 30 forward, the cover 410 continues to move forward with the vacuum drawer 30. (Refer to...) Figure 11 The top end of the pressure lever 422 will move to abut against the support guide surface 220. The top end of the pressure lever 422 can move forward along the support guide surface 220 until the limiting engagement 414 engages with the front stop of the limiting guide rail 131. At this point, the top end of the pressure lever 422 can no longer move forward along the support guide surface 220. The support guide surface 220 keeps the pressure lever 422 at a second height so that when the vacuum drawer 30 is closed, the pressure lever 422 can move backward along the support guide surface 220 to the pressure relief guide surface 210, making it easier for the pressure lever 422 to return to the first height, that is, to return the pressure relief component 420 to the position where the sealing part 421 closes the pressure relief hole 412.

[0142] In some possible implementations of the embodiments of this application, reference is made to Figure 4 , Figure 10 and Figure 12 The bottom of the pressure relief structure 20 may also be provided with a clearance surface 230, the front end of which is connected to the rear end of the pressure relief guide surface 210.

[0143] When the sealing part 421 closes the pressure relief hole 412, the top end of the pressure rod part 422 is located below the clearance surface 230, so that the pressure rod part 422 and the pressure relief structure 20 are spaced apart from each other, reducing the possibility that the top end of the pressure rod part 422 will be subjected to downward pressure from the pressure relief structure 20, thereby allowing the sealing part 421 to remain in the position of sealing the pressure relief hole 412, improving the sealing effect of the vacuum drawer 30 when it is closed.

[0144] In some possible implementations of the embodiments of this application, reference is made to Figure 8 and Figure 9 The cover assembly 40 may also include a second elastic member 430, which is connected to the cover body 410 and the pressure relief member 420 respectively. The second elastic member 430 is configured to apply a spring force to the pressure relief member 420 to rotate the sealing part 421 toward the pressure relief hole 412 so that the sealing part 421 closes the pressure relief hole 412.

[0145] The second elastic member 430 applies a spring force to the pressure relief member 420, causing the sealing part 421 to rotate toward the pressure relief hole 412. After the downward pressure applied by the pressure relief structure 20 to the top of the pressure rod part 422 is released, the pressure relief member 420 can rotate the sealing part 421 toward the pressure relief hole 412 under the action of the spring force of the second elastic member 430, and close the pressure relief hole 412.

[0146] In some embodiments, reference Figure 8 and Figure 9 The pressure relief component 420 may also include a connecting shaft 423, which is rotatably connected to the cover 410, and the sealing part 421 and the pressure rod part 422 are respectively fixedly connected to the connecting shaft 423.

[0147] refer to Figure 8 and Figure 9 The second elastic element 430 can be a torsion spring, which includes a spring body 431, a first torsion arm 432, and a second torsion arm 433. The spring body 431 is sleeved on the outside of the connecting shaft 423. The first torsion arm 432 and the second torsion arm 433 are respectively connected to the two ends of the spring body 431. The first torsion arm 432 is connected to the cover 410, and the second torsion arm 433 is connected to the sealing part 421 or the pressure rod part 422.

[0148] When the top of the pressure rod 422 is subjected to downward pressure from the pressure relief structure 20 and rotates downward, the first torsion arm 432 and the second torsion arm 433 undergo elastic torsional deformation around the axis of the spring body 431 and store torsional potential energy. When the downward pressure applied to the top of the pressure rod 422 by the pressure relief structure 20 is released, the torsion spring releases the torsional potential energy and drives the pressure relief component 420 to rotate in the opposite direction until it returns to the state when the sealing part 421 blocks the pressure relief hole 412.

[0149] In other embodiments, the second elastic element 430 may be a compression spring, the axis of which may extend along the height direction Z of the housing 10. The compression spring is disposed in a compressed state between the bottom of the pressure rod portion 422 and the cover 410. When the top of the pressure rod portion 422 is subjected to downward pressure from the pressure relief structure 20 and rotates downward, the compression spring is compressed and stores elastic potential energy. When the downward pressure applied to the top of the pressure rod portion 422 by the pressure relief structure 20 is released, the compression spring releases the stored elastic potential energy and pushes the top of the pressure rod portion 422 to rotate upward until it returns to the state when the sealing portion 421 blocks the pressure relief hole 412.

[0150] In some possible implementations of the embodiments of this application, reference is made to Figure 4 , Figure 13 , Figure 16 and Figure 17 When the cover 410 closes the access opening 311, the front end of the cover 410 contacts the rear end of the drawer door 320. When the vacuum drawer 30 is pulled forward from the closed state, the front end of the cover 410 is also pulled out to the front of the opening 121. As the vacuum drawer 30 gradually closes from the open state, pushing the vacuum drawer 30 backward causes the guide fitting 411 to move forward relative to the vacuum drawer 30 along the retaining rail 314. When the guide fitting 411 moves to the rear end of the lifting rail 313, pushing the vacuum drawer 30 backward continues causes the guide fitting 411 to move downward relative to the vacuum drawer 30 along the lifting rail 313, so that the cover 410 gradually moves downward. When the guide fitting 411 moves to the front end of the lifting rail 313, the cover 410 closes the access opening 311, at which point the front end of the cover 410 contacts the rear end of the drawer door 320. As the vacuum drawer 30 continues to be pushed backward, the cover 410 will move backward synchronously with the vacuum drawer 30. The limiting fitting 414 moves backward along the limiting guide rail 131, and the pressure rod 422 also moves backward gradually with the cover 410. The top of the pressure rod 422 gradually moves backward and upward along the pressure relief guide surface 210, so that the sealing part 421 gradually rotates toward the pressure relief hole 412. When the top of the pressure rod 422 moves to the top of the pressure relief guide surface 210, the sealing part 421 closes the pressure relief hole 412, so that the subsequent vacuum pump can evacuate the storage cavity 312.

[0151] As can be seen, in the refrigerator of this application embodiment, during the process of the vacuum drawer 30 gradually closing from the open state, the lowering of the cover 410 and the sealing action of the pressure relief hole 412 are realized simultaneously, which shortens the time required to close the vacuum drawer 30.

[0152] 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.

[0153] 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 above embodiments and various different variations of embodiments suitable for specific application considerations.

Claims

1. A refrigerator, characterized in that, include: The housing (10) has a refrigeration chamber (122) with an opening (121) on the front side. The side wall of the refrigeration chamber (122) is constructed with a limiting guide rail (131), which extends along the depth direction of the housing (10). The pressure relief structure (20) is installed on the top wall of the refrigeration compartment (122). The bottom of the pressure relief structure (20) has a pressure relief guide surface (210) that extends downward from back to front. A vacuum drawer (30) is formed with a storage cavity (312) having a top opening (311). The vacuum drawer (30) is slidably installed in the refrigeration compartment (122) through the opening (121). A lifting rail (313) is constructed on the side of the vacuum drawer (30) facing the side wall of the compartment. The lifting rail (313) extends upward from front to back at an angle. A top cover assembly (40) is disposed within the refrigeration compartment (122) and configured to open or close the access port (311); the top cover assembly (40) includes: The cover (410) has a limiting fitting (414) and a guide fitting (411) at its wide end. The guide fitting (411) is located in front of the limiting fitting (414). The limiting fitting (414) moves relative to the limiting guide rail (131), and the guide fitting (411) moves relative to the lifting rail (313). The cover (410) has a pressure relief hole (412). The pressure relief component (420) includes a sealing part (421) and a pressure rod part (422) connected to each other; the pressure relief component (420) is rotatably connected to the cover (410) so that the sealing part (421) opens or closes the pressure relief hole (412). During the process of pulling out the vacuum drawer (30), the pressure rod part (422) presses against the pressure relief guide surface (210) within a certain range of its stroke, and rotates under the pressure of the pressure relief guide surface (210) to open the pressure relief hole (412) of the sealing part (421). Before the pressure rod (422) separates from the pressure relief guide surface (210), the limiting fitting (414) moves forward along the limiting guide rail (131); after the pressure rod (422) separates from the pressure relief guide surface (210), and when the limiting fitting (414) engages with the front stop of the limiting guide rail (131), the guide fitting (411) moves upward relative to the vacuum drawer (30) along the lifting rail (313) so that the cover (410) moves upward relative to the vacuum drawer (30) and opens the take-out port (311).

2. The refrigerator according to claim 1, characterized in that, The vacuum drawer (30) is also provided with a retaining rail (314) on the side facing the side wall of the compartment. The retaining rail (314) extends along the depth direction of the box (10), and the front end of the retaining rail (314) is connected to the rear end of the lifting rail (313). When the vacuum drawer (30) is pulled out, the guide mating part (411) moves from the rear end of the lifting rail (313) into the retaining rail (314) for relative displacement.

3. The refrigerator according to claim 1, characterized in that, The bottom of the pressure relief structure (20) is also provided with a support guide surface (220), which extends along the depth direction of the box (10), and the rear end of the support guide surface (220) is connected to the front end of the pressure relief guide surface (210); When the top of the pressure bar (422) moves to the front end of the pressure relief guide surface (210), the limiting mating part (414) and the front end of the limiting guide rail (131) are spaced apart; When the vacuum drawer (30) is pulled out, the top of the pressure rod (422) moves from the front end of the pressure relief guide surface (210) to press against the support guide surface (220).

4. The refrigerator according to claim 1, characterized in that, The bottom of the pressure relief structure (20) is also provided with a clearance surface (230), and the front end of the clearance surface (230) is connected to the rear end of the pressure relief guide surface (210); When the sealing part (421) closes the pressure relief hole (412), the top of the pressure rod part (422) is located below the clearance surface (230).

5. The refrigerator according to any one of claims 1-4, characterized in that, A first elastic element (50) is provided between the cover (410) and the side wall of the compartment. The first elastic element (50) is configured to apply a forward pulling force to the cover (410) so that when the limiting engagement (414) moves to the front end of the limiting guide (131), the limiting engagement (414) is held in a position that engages with the front end stop of the limiting guide (131).

6. The refrigerator according to claim 5, characterized in that, A connecting post (415) is provided at the end of the cover (410) along the width direction, and the axis of the connecting post (415) extends along the width direction of the box (10); The first elastic element (50) includes a tension spring, the front end of which is connected to the side wall of the compartment, and the rear end of which is connected to the connecting post (415).

7. The refrigerator according to any one of claims 1-4, characterized in that, The cover assembly (40) also includes a second elastic member (430) connected to the cover body (410) and the pressure relief member (420), respectively. The second elastic member (430) is configured to apply a spring force to the pressure relief member (420) to rotate the sealing part (421) toward the pressure relief hole (412) so that the sealing part (421) closes the pressure relief hole (412).

8. The refrigerator according to claim 7, characterized in that, The pressure relief component (420) also includes a connecting shaft (423), which is rotatably connected to the cover (410), and the sealing part (421) and the pressure rod part (422) are respectively connected to the connecting shaft (423). The second elastic element (430) includes a torsion spring, which includes a spring body (431), a first torsion arm (432) and a second torsion arm (433); the spring body (431) is sleeved on the outside of the connecting shaft (423); the first torsion arm (432) and the second torsion arm (433) are respectively connected to the two ends of the spring body (431), the first torsion arm (432) is connected to the cover (410), and the second torsion arm (433) is connected to the sealing part (421) or the pressure rod part (422).

9. The refrigerator according to any one of claims 1-4, characterized in that, The housing (10) includes: The liner (120) has a refrigeration compartment (122) and the liner (120) has a side wall; A side guide rail (130) is fixedly installed on the side wall of the gallbladder, and a limit guide rail (131) is constructed on the side of the side guide rail (130) away from the side wall of the gallbladder where it is located.

10. A refrigerator, characterized in that, include: The housing (10) has a refrigeration chamber (122) with an opening (121) on the front side. The side wall of the refrigeration chamber (122) is constructed with a limiting guide rail (131), which extends along the depth direction of the housing (10). The pressure relief structure (20) is installed on the top wall of the refrigeration compartment (122). The bottom of the pressure relief structure (20) has a pressure relief guide surface (210) that extends downward from back to front. A vacuum drawer (30) is formed with a storage cavity (312) having a top opening (311). The vacuum drawer (30) is slidably installed in the refrigeration compartment (122) through the opening (121). A lifting rail (313) is constructed on the side of the vacuum drawer (30) facing the side wall of the compartment. The lifting rail (313) extends upward from front to back at an angle. A top cover assembly (40) is disposed within the refrigeration compartment (122) and configured to open or close the access port (311); the top cover assembly (40) includes: The cover (410) has a limiting fitting (414) and a guide fitting (411) at its wide end. The limiting fitting (414) moves relative to the limiting guide rail (131), and the guide fitting (411) moves relative to the lifting rail (313). The cover (410) has a pressure relief hole (412). The pressure relief component (420) includes a sealing part (421) and a pressure rod part (422) connected to each other; the pressure relief component (420) is rotatably connected to the cover (410) so that the sealing part (421) opens or closes the pressure relief hole (412). When the vacuum drawer (30) is closed, the top of the pressure rod (422) is located behind the pressure relief guide surface (210), the sealing part (421) closes the pressure relief hole (412), the limiting fitting part (414) cooperates with the rear end of the limiting guide rail (131), and the cover (410) closes the take-out port (311) and is attracted to the vacuum drawer (30). As the vacuum drawer (30) is gradually pulled out from the closed state to the first position, the top of the pressure rod (422) abuts against the pressure relief guide surface (210) and moves forward along the pressure relief guide surface (210). The sealing part (421) opens the pressure relief hole (412), the limiting fitting (414) moves forward along the limiting guide rail (131), and the cover (410) closes to the take-out port (311). When the vacuum drawer (30) is pulled out to the first position, the top of the pressure rod (422) moves to the front end of the pressure relief guide surface (210), and the limiting mating part (414) moves to the front end of the limiting guide rail (131) or has a gap with the front end of the limiting guide rail (131). When the vacuum drawer (30) is pulled out to the point where the limiting fitting (414) engages with the front stop of the limiting guide rail (131), the vacuum drawer (30) continues to be pulled forward. The guide fitting (411) moves upward relative to the vacuum drawer (30) along the lifting rail (313), and the cover (410) moves upward relative to the vacuum drawer (30) and opens the take-out port (311).

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