Refrigerator

Abstract

The invention provides a refrigerator. The through hole is formed in the top of the storage device or the rear wall of a shell; the conductive structure is used for electrically connecting a first electric device and a second electric device; the sealing structure is arranged on the conductive structure in a sleeving manner; the mounting structure is used for applying pre-tightening force towards the interior of the storage device to the conductive structure; according to the application, the sealing structure and the mounting structure are arranged at the matching part of the conductive structure and the shell, and the conductive structure moves towards the direction close to the interior of the shell and extrudes the sealing structure by utilizing the pre-tightening force applied by the mounting structure towards the interior of the shell; the conductive structure is arranged in the shell, so that the assembled sealing structure generates a first shrinkage distance compared with the unassembled sealing structure, and in the air exhaust process of the air exhaust device, the conductive structure is pressed towards the interior of the shell under the action of internal and external pressure difference, so that the sealing structure is further compressed and forms a second shrinkage distance, and further sealing is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigerators, and in particular relates to a refrigerator. Background Art

[0002] In order to store food better, a vacuum drawer is installed in the refrigerator, and the vacuum drawer is evacuated by a vacuum device. The main function of vacuuming is to deoxygenate the inside of the vacuum drawer to prevent food from spoiling.

[0003] At present, due to the high requirements for vacuum degree and sealing level, vacuum drawers cannot be wired and powered on, and powered components such as temperature sensors and ion modules cannot be placed inside the vacuum drawers. This will result in the inability to accurately control the temperature inside the vacuum drawer and only fuzzy temperature control can be performed. The powered ion module cannot be used and only cold catalysts can be used, resulting in poor sterilization and odor removal effects. Summary of the invention

[0004] The invention solves one of the technical problems in the related art at least to some extent.

[0005] To this end, the present application aims to provide a refrigerator which has a simple structure, occupies a small space, has low requirements for user operation, and can meet the needs of vacuuming.

[0006] The refrigerator according to the present application comprises:

[0007] Box;

[0008] A storage device is defined and formed in the box body, the storage device includes a shell defining a storage chamber and having a storage opening, the shell includes a top and a bottom arranged opposite to each other, and the shell has a shell rear wall arranged opposite to the storage opening;

[0009] An air extraction device, connected to the storage chamber, for extracting air from the storage chamber to form a low-pressure state in the storage chamber;

[0010] A through hole, which is provided on the top of the housing or the rear wall of the housing and is used to connect the inside and outside of the storage chamber;

[0011] A first electrical device, which is disposed inside the storage chamber;

[0012] a second electrical device disposed outside the storage chamber;

[0013] A conductive structure, the conductive structure is used to realize the electrical connection between the first electrical device and the second electrical device, and the conductive structure further includes:

[0014] The conductive part, part of which enters the storage chamber through the through hole and part of which is placed outside the storage chamber, the part placed inside the storage chamber is connected to the first electrical device, and the part placed outside the storage chamber is connected to the second electrical device;

[0015] A fixing plate, which is arranged at the periphery of the conductive part and is placed outside the storage chamber;

[0016] The refrigerator also includes:

[0017] A sealing structure is sleeved on the conductive part and is placed on a side of the fixed plate close to the interior of the storage chamber;

[0018] A mounting structure, which is arranged on a side of the fixing plate away from the interior of the storage chamber, and the mounting structure is used to apply a pre-tightening force toward the interior of the storage chamber to the fixing plate;

[0019] After the conductive structure, the sealing structure and the mounting structure are assembled, under the action of the pre-tightening force of the mounting structure, the conductive structure moves toward the direction close to the interior of the storage chamber and squeezes the sealing structure, so that the assembled sealing structure has a first contraction distance compared to the unassembled sealing structure;

[0020] During the vacuuming process of the vacuum device, the air pressure in the storage chamber gradually decreases to below the external atmospheric pressure, and the conductive structure tends to move toward the sealing structure under the pressure difference between inside and outside the storage chamber, so that the sealing structure is further compressed and forms a second contraction distance, wherein the second contraction distance is smaller than the first contraction distance.

[0021] The refrigerator according to the present application comprises:

[0022] Box;

[0023] A storage device is defined and formed in the box body, the storage device includes a shell defining a storage chamber and having a storage opening, the shell includes a top and a bottom arranged opposite to each other, and the shell has a shell rear wall arranged opposite to the storage opening;

[0024] An air extraction device, connected to the storage chamber, for extracting air from the storage chamber to form a low-pressure state in the storage chamber;

[0025] A through hole, which is provided on the top of the housing or the rear wall of the housing and is used to connect the inside and outside of the storage chamber;

[0026] A first electrical device disposed inside the storage chamber;

[0027] a second electrical device disposed outside the storage chamber;

[0028] A conductive structure, the conductive structure is used to realize the electrical connection between the first electrical device and the second electrical device, and the conductive structure further includes:

[0029] The conductive part, part of which enters the storage chamber through the through hole, and part of which is placed outside the storage chamber; the part placed inside the storage chamber is connected to the first electrical device, and the part placed outside the storage chamber is connected to the second electrical device;

[0030] A fixing plate, which is arranged at the periphery of the conductive part and is placed outside the storage chamber;

[0031] The refrigerator also includes:

[0032] A sealing structure is sleeved on the conductive part and is placed on a side of the fixed plate close to the interior of the storage chamber, wherein the through hole, the sealing structure, the fixed plate and the conductive part form a chamber connected to the storage chamber;

[0033] A mounting structure, which is arranged on a side of the fixing plate away from the interior of the storage chamber, and the mounting structure is used to apply a pre-tightening force toward the interior of the storage chamber to the fixing plate;

[0034] After the conductive structure, the sealing structure and the mounting structure are assembled, under the action of the pre-tightening force of the mounting structure, the conductive structure moves toward the direction close to the interior of the storage chamber and squeezes the sealing structure, so that the space of the chamber is reduced by a first contraction volume;

[0035] During the vacuuming process of the vacuum device, the air pressure in the storage chamber gradually decreases to below the external atmospheric pressure, and the conductive structure tends to move toward the sealing structure under the action of the pressure difference inside and outside the storage chamber, so as to further compress the space of the chamber and reduce the second contraction volume, thereby shortening the sealing boundary of the storage chamber, wherein the second contraction volume is smaller than the first contraction volume.

[0036] In some embodiments of the present application, a receiving portion is further included, which is disposed on the top of the housing or the rear wall of the housing and is recessed toward the inside of the housing, and a through hole is disposed at the bottom of the receiving portion;

[0037] The sealing structure is pressed on the bottom of the accommodating portion under the action of the pre-tightening force of the mounting structure to seal the through hole.

[0038] In some embodiments of the present application, the mounting structure includes:

[0039] A pressing plate, which is sleeved on the conductive part and matched with the fixing plate;

[0040] A connecting plate, which is located at the periphery of the pressing plate away from the conductive part and is fixedly connected to the housing;

[0041] After the connecting plate is fixedly connected to the shell, the pressing plate presses against the fixing plate, and the sealing structure is squeezed through the fixing plate and the shell, providing a pre-tightening force on the sealing structure, so that the sealing structure is sealed and connected to the fixing plate and the shell.

[0042] In some embodiments of the present application, the mounting structure includes:

[0043] A mounting portion, one end of which is connected to the housing, and the other end of which extends to a side of the fixing plate away from the sealing structure;

[0044] The abutment portion is arranged at the other end of the mounting portion and is arranged on a side of the mounting portion close to the fixing plate;

[0045] The abutting portion is pressed toward the fixing plate, and the sealing structure is squeezed by the fixing plate and the shell, providing a pre-tightening force on the sealing structure, so that the sealing structure is sealed and connected with the fixing plate and the shell.

[0046] In some embodiments of the present application, a first protective cover is further included, which is arranged on a side of the accommodating portion away from the interior of the storage chamber, and the first protective cover cooperates with the end of the accommodating portion away from the interior of the storage chamber to form a first accommodating cavity.

[0047] In some embodiments of the present application, a sealing strip is further included, and the sealing strip is arranged at the matching position of the first protective cover and the accommodating portion.

[0048] In some embodiments of the present application, the first electrical device is configured as a photodynamic sterilization module, and the photodynamic sterilization module is disposed on the top wall of the housing to sterilize the storage chamber through the light emitted thereby.

[0049] In some embodiments of the present application, the photodynamic sterilization module includes:

[0050] A circuit board is arranged on the top wall of the housing;

[0051] a light emitting component, which is electrically connected to the circuit board,

[0052] The glass plate is located on a side of the light-emitting component close to the storage chamber, and the glass plate protrudes toward the side close to the storage chamber. The light emitted by the light-emitting component passes through the glass plate and enters the storage chamber.

[0053] In some embodiments of the present application, the conductive portion includes a first conductive portion and a second conductive portion disposed on opposite sides of the fixed plate;

[0054] The refrigerator also includes:

[0055] One end of the wire is connected to the first electrical component, and the other end of the wire is sleeved on the first conductive part.

[0056] Compared with the prior art, the advantages and positive effects of this application are:

[0057] The refrigerator proposed in the present application includes a storage device, an exhaust device that can exhaust air from the storage device to reduce the internal pressure of the storage device, and also includes a first electrical device located inside the storage chamber and a second electrical device located outside the storage chamber. In order to meet the power supply requirements of the first electrical device and the second electrical device without reducing the overall sealing of the storage device, the refrigerator in the present application includes a conductive part for connecting the first electrical device and the second electrical device, a sealing structure for being sleeved on the conductive part, and a mounting structure arranged on a side of a fixed plate away from the storage chamber. The mounting structure can apply a pre-tightening force toward the storage chamber on the fixed plate. When the conductive structure, the sealing structure and the mounting structure are assembled, under the action of the mounting structure, the conductive structure moves toward the direction close to the interior of the storage chamber and squeezes the sealing structure, so that the assembled sealing structure has a first contraction distance compared to the unassembled sealing structure.

[0058] At the same time, during the vacuum process of the vacuum device, the air pressure in the storage chamber gradually decreases to below the external atmospheric pressure. Under the action of the pressure difference between inside and outside the storage chamber, the conductive structure tends to move toward the sealing structure. The sealing structure is further compressed and forms a second contraction distance, wherein the second contraction distance is smaller than the first contraction distance.

[0059] Through the above-mentioned power-on sealing scheme, when air is not pumped out, the pre-tightening force of the mounting structure and the cooperation of the sealing structure are used to seal the through-holes of the conductive structure. When air is pumped out, the pressure difference between the inside and outside of the storage chamber is used to further compress the sealing structure, effectively improving the sealing effect. The above-mentioned power-on sealing scheme can meet the power-on and related power requirements of temperature and humidity sensors, ion modules, etc., and can effectively reduce the power-on cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0061] Figure 1 is a three-dimensional diagram of the refrigerator of the present application;

[0062] Figure 2 It is a structural schematic diagram of the low-pressure storage device of the refrigerator of the present application when it is in a closed state;

[0063] Figure 3 It is a structural schematic diagram of the low-pressure storage device of the refrigerator of the present application when it is in an open state;

[0064] Figure 4 is a cross-sectional view of a low-pressure storage device of the refrigerator of the present application;

[0065] Figure 5 yes Figure 4 A magnified image of area A;

[0066] Figure 6 It is an overall schematic diagram of a low-pressure storage device with a mechanical ventilation unit of the refrigerator of the present application;

[0067] Figure 7 It is a structural schematic diagram of a door body with a mechanical ventilation unit of the refrigerator of the present application;

[0068] Figure 8 It is a schematic diagram of the exploded structure of the ventilation unit of the refrigerator of the present application;

[0069] Fig. 9 It is a structural schematic diagram of the fixing parts of the refrigerator of the present application;

[0070] Fig.10 is a cross-sectional view of a door body with a mechanical ventilation unit of the refrigerator of the present application;

[0071] Fig.11 It is a structural schematic diagram of the buttons of the refrigerator of the present application;

[0072] Fig.12 It is a structural schematic diagram of the first adapter of the refrigerator of the present application;

[0073] Fig.13 is a structural schematic diagram of the first adapter of the refrigerator of the present application from another perspective;

[0074] Fig.14 is a structural schematic diagram of the first adapter of the refrigerator of the present application from another perspective;

[0075] Fig.15 It is a structural schematic diagram of the second adapter and the sealing plug of the refrigerator of the present application;

[0076] Fig.16 is a structural schematic diagram of the second adapter and the sealing plug of the refrigerator of the present application from another perspective;

[0077] Fig.17 It is a structural schematic diagram of the mechanical ventilation unit in the initial state when the door of the refrigerator of the present application is closed;

[0078] Fig.18 It is a structural schematic diagram when the button of the mechanical ventilation unit of the refrigerator of the present application is pressed and the button protrudes outside the door panel when the door of the refrigerator is closed;

[0079] Fig.19 It is a structural schematic diagram when the button of the mechanical ventilation unit of the refrigerator of the present application is pressed and the button is flush with the door panel when the door of the refrigerator is closed;

[0080] Fig. 20It is a structural schematic diagram when the button of the mechanical ventilation unit is pressed and the button is located on the side of the door panel close to the shell when the door of the refrigerator of the present application is closed;

[0081] Fig.21 It is a structural schematic diagram of the refrigerator of the present application when the guide rail device provided with a push-open locking structure is in an open state;

[0082] Fig. 22 It is a structural schematic diagram of the refrigerator of the present application when the guide rail device provided with a locking structure having a double self-locking function is in an open state;

[0083] Fig.23 It is a structural schematic diagram of the refrigerator of the present application when the guide rail device provided with a locking structure having a double self-locking function is in a closed state;

[0084] Fig.24 It is a schematic structural diagram of the refrigerator of the present application when the guide rail device with a locking structure of a lock switch type is in an open state;

[0085] Fig.25 It is a schematic diagram of the structure of the refrigerator of the present application when the door is closed;

[0086] Fig.26 It is a schematic diagram of the relative positions of the flip beam and the door body of the low-pressure storage device when the refrigerator door of the present application is closed;

[0087] Fig. 27 It is a schematic diagram of the exploded structure of the low-pressure storage device of the refrigerator of the present application;

[0088] Fig.28 It is a schematic diagram of the exploded structure of the low-pressure storage device of the refrigerator of the present application from another perspective;

[0089] Fig.29 It is a schematic diagram of the exploded structure of the low-pressure storage device of the refrigerator of the present application from another perspective;

[0090] Fig.30 It is a structural schematic diagram of the adapter plate and the power supply device of the refrigerator of the present application;

[0091] Fig.31 It is a schematic diagram of the exploded structure of the adapter plate and the power supply device of the refrigerator of the present application;

[0092] Fig.32 It is a structural schematic diagram of the adapter plate, the power supply device and the ion generating module of the refrigerator of the present application;

[0093] Fig.33 It is a schematic diagram of the exploded structure of the adapter plate, the power supply device and the gas-controlled membrane assembly of the refrigerator of the present application;

[0094] Fig.34It is a schematic diagram of the exploded structure of the adapter plate, the power supply device and the ion generating module of the refrigerator of the present application;

[0095] Fig.35 It is a structural schematic diagram of the low-pressure storage device and the photodynamic sterilization module of the refrigerator of the present application;

[0096] Fig.36 It is a structural schematic diagram of the low-pressure storage device and the photodynamic sterilization module of the refrigerator of the present application from another perspective;

[0097] Fig.37 It is a structural schematic diagram of the adapter plate, power supply device and photodynamic sterilization module of the refrigerator of the present application;

[0098] Fig.38 It is a schematic diagram of the exploded structure of the housing of the low-pressure storage device and the photodynamic sterilization module of the refrigerator of the present application;

[0099] Fig.39 It is a cross-sectional view of the housing of the low-pressure storage device and the photodynamic sterilization module of the refrigerator of the present application;

[0100] Fig.40 It is an exploded view of the adapter plate of the refrigerator of the present application and a power supply device of one structure;

[0101] Fig.41 It is an exploded view of the adapter plate of the refrigerator of the present application and a power supply device of another structure;

[0102] Fig.42 It is a structural schematic diagram of the adapter plate and the power supply device of the refrigerator of the present application;

[0103] Fig.43 yes Fig.42 The cross-sectional view of the C position after the middle power supply device is assembled;

[0104] Fig.44 yes Fig.43 A partial enlarged view of

[0105] Fig.45 yes Fig.42 The cross-sectional view at position C after the middle air extraction device has been used for air extraction;

[0106] Fig.46 yes Fig.45 A partial enlarged view of .

[0107] In the above figures: box body 10; box door 11; storage room 12; access opening 13; storage container 14; second protective cover 16; cover shell 17; matching plate 18; support plate 19; electronic ventilation unit 31; vacuum pump 32; outer rail 35; middle rail 34; inner rail 33; nitrogen and oxygen separation membrane 36;

[0108] Shell 2; storage chamber 20; storage port 21; sealing convex strip 22; groove 23; support platform 24; mounting groove 25; first through hole 26; second through hole 27; opening 28; accommodating portion 200;

[0109] Door body 3; connecting groove 30;

[0110] Sealing element 4; first connecting strip 40; matching strip 41; second connecting strip 42; connecting portion 43; hooking portion 44; sealing groove 45;

[0111] Flip beam 5; free end 50;

[0112] Conductive structure 6; first conductive part 61; second conductive part 62; fixing plate 63; sealing structure 64; mounting structure 65; first protective cover 66; sealing strip 67; mounting part 651651; abutting part 652; pressing plate 653; connecting plate 654;

[0113] Adapter plate 7; receiving portion 70; sealing ring 71;

[0114] First circuit board 90; discharge module 91;

[0115] Glass plate 8; mounting strip 80;

[0116] A second circuit board 92; a light emitting component 93;

[0117] Main body 37; Recessed portion 371;

[0118] Door panel 38; through hole 381;

[0119] Button 51; pressing wall 52; pressing side wall 53; first guide plate 54; second guide plate 55; first matching hole 56; second matching hole 57; pressing spring 58;

[0120] Fixing member 81; spring mounting column 82; third through hole 821; first guide groove 83; second guide groove 84; third guide groove 85; first fixing plate 86; second fixing plate 87; first limiting column 88; second limiting column 89;

[0121] First adapter 93; first connecting plate 94; first convex column 941; second convex column 942;

[0122] The second connecting plate 95; the first rotating boss 951; the second rotating boss 952;

[0123] A third connecting plate 96; a third through hole 961;

[0124] Conversion plate 72; first connection boss 73; second connection boss 74; first through hole 75; second through hole 76;

[0125] A first return torsion spring 46; a second return torsion spring 47;

[0126] Sealing plug 9; connecting column 48; blocking portion 49; mounting seat 29; first connecting plate 291; second connecting plate 292; third connecting plate 293; fourth connecting plate 294. DETAILED DESCRIPTION

[0127] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0128] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0129] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0130] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0131] Please refer to Figure 1-Figure 22 The refrigerator includes a cabinet 10 having a storage chamber 12 , a cabinet door 11 connected to the cabinet 10 to open and close the storage chamber 12 , and a refrigeration device that supplies cold air to the storage chamber 12 .

[0132] The cabinet 10 includes an inner tank defining a storage chamber 12 , an outer shell connected to the outer side of the inner tank to form the appearance of a refrigerator, and an insulating layer provided between the inner tank and the outer shell to insulate the storage chamber 12 .

[0133] The inner shell of the box body 10 defines a plurality of storage chambers 12 .

[0134] In some embodiments of the present application, the multiple storage chambers 12 include a refrigerating chamber and a freezing chamber located below the refrigerating chamber; it should be noted that the arrangement of the multiple storage chambers 12 of the refrigerator is not limited to the above examples.

[0135] A loading and unloading opening 13 is formed at the front end of the storage chamber 12 for placing food into the storage chamber 12 or taking food out of the storage chamber 12 .

[0136] The box door 11 is connected to the box body 10 to open or close the access opening 13 of the storage chamber 12 .

[0137] The refrigerator is provided with a low-pressure storage device which can be maintained in a low-pressure state and an exhaust device which is used for extracting gas from the low-pressure storage device so as to form an inner cavity of the low-pressure storage device in a low-pressure state.

[0138] It should be noted that the storage device in the present application refers to a space that can reach a low-pressure state, a low-oxygen state, or a low-pressure and low-oxygen state.

[0139] In some embodiments of the present application, the vacuum device includes a vacuum pump 32 and a pipeline connected between the vacuum pump 32 and the low-pressure storage device. When the vacuum device is working, the vacuum pump 32 is started to extract the gas in the low-pressure storage device, thereby reducing the pressure in the low-pressure storage device and forming a vacuum storage environment.

[0140] The refrigerator is provided with a controller, and the controller can control the vacuum device to evacuate the low-pressure storage device, so as to realize automatic control of the vacuum evacuation of the low-pressure storage device.

[0141] In some embodiments of the present application, the low-pressure storage device is disposed in a refrigerating chamber. It should be understood that in other embodiments, the low-pressure storage device may also be disposed in other storage rooms, such as a variable temperature room whose temperature range can be switched between a refrigerating temperature zone and a freezing temperature zone.

[0142] In some embodiments of the present application, the low-pressure storage device is located at the bottom of the refrigerating chamber and is supported on the bottom wall of the refrigerating chamber.

[0143] In some embodiments of the present application, the low-pressure storage device can be constructed independently of the box body 10 and then assembled in the box body 10. The low-pressure storage device can be inserted into the refrigerating chamber or pulled out from the refrigerating chamber.

[0144] The refrigerator is provided with a low oxygen storage device capable of maintaining a low oxygen state, an atmosphere-controlled membrane arranged at an exhaust port of the low oxygen storage device, and an exhaust device for extracting gas from the low oxygen storage device through the atmosphere-controlled membrane so that the inner cavity of the low oxygen storage device forms a low oxygen device.

[0145] Since different polymer membranes have different permeabilities and selectivities for different types of gas molecules, the gas-controlled membrane can be used to separate a certain type of air from a gas mixture. In this application, oxygen is separated from the air. In some embodiments, the gas-controlled membrane is a thin film made of a conductive organic material such as polyaniline. This polymer can be doped with charged atoms, and the permeability of the film can be changed by the content of the dopant. When passing through this film, oxygen is faster than nitrogen, so oxygen produced by this film can be used.

[0146] In some embodiments of the present application, the gas extraction device includes a vacuum pump 32 and a pipeline connected between the vacuum pump 32 and the hypoxic storage device. When the gas extraction device is working, the vacuum pump 32 is started to extract the gas in the hypoxic storage device, thereby reducing the oxygen content in the hypoxic storage device and forming a hypoxic storage environment.

[0147] The refrigerator is provided with a controller, and the controller can control the exhaust device to exhaust low oxygen from the low oxygen storage device, so as to realize automatic control of the exhaust of low oxygen from the low oxygen storage device.

[0148] In some embodiments of the present application, the low oxygen storage device is arranged in a cold storage room. It should be understood that in other embodiments, the low oxygen storage device can also be arranged in other storage rooms, such as a variable temperature room whose temperature range can be switched between a refrigeration temperature zone and a freezing temperature zone.

[0149] In some embodiments of the present application, the refrigerator may be provided with a controlled atmosphere membrane at the exhaust port of the low-pressure storage device. When the vacuum pump 32 is started, the gas in the inner cavity is extracted to reduce the pressure in the inner cavity. At the same time, the gas passes through the controlled atmosphere membrane when being extracted, thereby reducing the oxygen content in the inner cavity and forming a low-pressure and low-oxygen storage environment.

[0150] In some embodiments of the present application, the low oxygen storage device is located at the bottom of the refrigerating chamber and is supported on the bottom wall of the refrigerating chamber.

[0151] In some embodiments of the present application, the low oxygen storage device may be configured to be independent of the structure of the box and then assembled in the box, and the low oxygen storage device may be inserted into or pulled out of the refrigerating chamber.

[0152] It should be noted that, compared with the low-pressure storage device, the structure of the low-oxygen storage device adds a modified atmosphere membrane arranged at the air extraction port to separate oxygen from the mixed gas.

[0153] The structure of one of the storage devices in the present application is described below by taking a low-pressure storage device as an example.

[0154] like Figure 1-Figure 3As shown, the low-pressure storage device includes a housing 2 defining a storage chamber 20 and having a storage opening 21, a storage container 14 that can be pushed into or pulled out of the storage chamber 20 defined by the housing 2, and a door body 3 fixedly connected to the storage container 14. When the storage container 14 is pushed into the storage chamber 20, the door body 3 closes the storage opening 21. The door body 3 and the storage container 14 together constitute a drawer unit that can be pushed into and pulled out of the housing 2.

[0155] Among them, the shell 2 has a shell rear wall arranged opposite to the storage port 21; the direction along the shell rear wall pointing to the plane where the storage port 21 is located is recorded as the first moving direction, and the direction along the plane where the storage port 21 is located pointing to the shell rear wall is recorded as the second moving direction. The first moving direction is opposite to the second moving direction, and the drawer unit can move along the first moving direction or the second moving direction.

[0156] When the storage chamber 20 is closed by the door 3 and the vacuum device is activated, the gas in the storage chamber 20 is evacuated and the storage chamber 20 is in a low pressure state. According to one embodiment of the present invention, at the end of the vacuuming process, the pressure in the storage chamber 20 is lower than one standard atmospheric pressure or between one standard atmospheric pressure and absolute vacuum. Since the gas pressure in the storage chamber 20 is lower than one standard atmospheric pressure, those skilled in the art also commonly refer to it as a "vacuum chamber".

[0157] In some embodiments of the present application, the door body 3 may be provided with a sealing element 4, so that when the door body 3 is in a closed position, an airtight joint is formed between the housing 2 and the door body 3, thereby preventing gas from entering the low-pressure storage chamber 12 from the joint between the housing 2 and the door body 3. As another possible arrangement, the sealing element 4 may also be provided at the front end of the housing 2, for example, connected to the front end wall of the housing 2. When the door body 3 closes the storage opening 21, the door body 3 and the housing 2 are sealed and matched through the sealing element 4, and the storage chamber 20 of the housing 2 forms a closed storage space.

[0158] In some embodiments of the present application, the sealing element 4 is annular.

[0159] In some embodiments of the present application, the sealing element 4 is a compressible sealing member.

[0160] The sealing element 4 has a deformable length along the moving direction of the storage container 14 being pushed into or pulled out of the housing 2. The maximum length of the sealing element 4 deformed by being compressed from its natural state is recorded as the maximum deformable distance L. 0 When the door body 3 is closed, the sealing element 4 is compressed under the joint extrusion of the door body 3 and the front end wall of the housing 2, and the compressed deformation length of the sealing element 4 is not greater than the maximum deformable distance L 0 When the door body 3 is opened, the door body 3 is separated from the housing 2, the pressure applied to the sealing element 4 is removed, and the sealing element 4 returns to a natural state.

[0161] In some embodiments of the present application, the sealing element 4 is a rubber seal.

[0162] In some embodiments of the present application, the sealing element 4 may be configured as an airbag seal.

[0163] In some embodiments of the present application, Figure 4-Figure 5 As shown, the sealing element 4 is disposed on the door body 3 , and is annular and surrounds the storage container 14 , so that when the door body 3 and the housing 2 are closed, the sealing element 4 surrounds the storage opening 21 for sealing.

[0164] The sealing element 4 has a first connecting strip 40, a matching strip 41, and a second connecting strip 42. A connecting groove 30 is formed on the door body 3 around the storage container 14, and the first connecting strip 40 is installed in the connecting groove 30, and the first connecting strip 40 is sealed and connected to the connecting groove 30, so as to seal and fix the sealing element 4 to the door body 3.

[0165] The matching strip 41 is located on the side of the first connecting strip 40 close to the housing 2. A sealing groove 45 is provided on the side of the matching strip 41 close to the housing 2. A sealing convex strip 22 is provided at the front end of the housing 2. When the door body 3 is closed, the sealing convex strip 22 on the housing 2 is installed in the sealing groove 45, and the sealing groove 45 and the sealing convex strip 22 are sealed and matched, effectively ensuring the sealing of the connection between the sealing element 4 and the housing 2.

[0166] In some embodiments of the present application, a recessed strip is formed on the wall surface of the sealing convex strip 22 opposite to the door body 3 to increase the deformation space of the sealing convex strip 22 .

[0167] The second connecting strip 42 is located on the side of the matching strip 41 close to the housing 2 and the second connecting strip 42 is located on the side of the sealing groove 45 close to the storage container 14. That is, the second connecting strip 42 is surrounded by the sealing groove 45, and the sealing groove 45 surrounds the periphery of the second connecting strip 42.

[0168] The second connecting strip 42 includes a connecting portion 43 extending from one end thereof connected to the matching strip 41 to a side away from the first connecting strip 40 .

[0169] The second connecting strip 42 includes a connecting portion 43 extending from one end thereof connected to the matching strip 41 to a side away from the first connecting strip 40, and a hooking portion 44 extending from one end of the connecting portion 43 away from the first connecting strip 40 to a side close to the sealing groove 45. A groove 23 is provided on the bottom wall of the storage chamber 20, and the groove 23 is close to the storage opening 21. When the door body 3 is closed, the connecting portion 43 extends into the storage chamber 20 and is located above the bottom wall of the storage chamber 20; the hooking portion 44 is matched with the groove 23.

[0170] The above-mentioned setting of the sealing element 4 enables there to be multiple fitting points between the sealing element 4 and the shell 2, and the multiple fitting points are not on the same plane. The gas needs to slowly enter the storage chamber 20 through multiple fitting gaps that are not on the same plane. The path for the gas to enter the storage chamber 20 is extended, and the path has many bends and turns, which effectively reduces the amount of gas entering the storage chamber 20, ensures the pressure maintenance performance of the vacuum degree in the storage chamber 20, and extends the vacuum maintenance time.

[0171] In some embodiments of the present application, the low-pressure storage device is provided with a ventilation unit to control the disconnection or connection between the storage chamber 20 and the external environment of the low-pressure storage device. When the vacuum device is started, the ventilation unit disconnects the storage chamber 20 from the external environment of the low-pressure storage device. When the low-pressure storage device needs to be opened, the ventilation unit connects the storage chamber 20 with the external environment of the low-pressure storage device, and the gas of the external environment enters the low-pressure storage device, and the difference between the atmospheric pressure of the external environment and the pressure in the storage chamber 20 gradually decreases; at this time, the user has little resistance when pulling the drawer unit out of the storage chamber 20, which is convenient for the user to operate.

[0172] In some embodiments of the present application, the ventilation unit is configured as an electronic ventilation unit 31. As a configurable manner, when the electronic ventilation unit 31 is powered off, the storage chamber 20 is disconnected from the external environment, and the storage chamber 20 maintains its sealed vacuum state. When the electronic ventilation unit 31 is powered on, it generates an electromagnetic force that can overcome the elastic force of the spring inside the electronic ventilation valve, so that the inside of the low-pressure storage unit is connected to the outside. The electronic ventilation unit 31 is configured as an electronic ventilation valve.

[0173] In some embodiments of the present application, the electronic ventilation unit 31 is disposed on the housing 2 , and a vibration damping member is disposed between the electronic ventilation unit 31 and the housing 2 to reduce vibration and noise caused by the electronic ventilation unit 31 when working.

[0174] In some embodiments of the present application, the vibration damper is made of EPDM, the most important characteristic of which is its excellent resistance to oxidation, ozone and corrosion.

[0175] In some embodiments of the present application, the low-pressure storage unit is provided with a vent hole connecting the opposite sides thereof, so that when the door body 3 is closed, the vent hole is opened by the vent unit to connect the storage chamber 20 with the outside, so that the outside gas enters the storage chamber 20 through the vent hole to balance the internal and external air pressures.

[0176] In some embodiments of the present application, Figure 6-Figure 20 As shown, the ventilation unit is configured as a mechanical button type, and by manually pressing the mechanical button, the ventilation hole connecting the inside and outside of the storage chamber 20 can be opened to balance the pressure difference between the inside and outside.

[0177] As a configurable manner, the vent hole is arranged on the door body 3 .

[0178] For the convenience of description, the normal line of the surface of the door body 3 directly facing the access opening is defined as the first normal line.

[0179] The mechanical ventilation unit comprises a pressing part, a conversion part connected to the pressing part, and a sealing part fixedly connected to the conversion part, wherein the pressing part is configured to be able to perform reciprocating linear motion along a first normal direction of the door body 3 .

[0180] The conversion part is configured so that when the pressing part moves along the first normal line, the end of the conversion part connected to the sealing part moves in a curve, so that the sealing part moves away from the vent hole to open the vent hole, or the sealing part moves close to the vent hole to close the vent hole.

[0181] It should be noted that the curvilinear motion here includes not only circular motion around a single axis, but also non-circular motion around a variable rotation axis. In the embodiment shown in the drawings, the curvilinear motion is circular motion around a single axis.

[0182] In some embodiments of the present application, the initial position of the ventilation unit is when the sealing portion of the mechanical ventilation unit blocks the ventilation hole.

[0183] In some embodiments of the present application, the conversion portion is configured such that when the pressing portion moves linearly along the first normal line toward the side close to the storage chamber 20, the end of the conversion portion connected to the sealing portion rotates and rotates away from the vent hole.

[0184] In some embodiments of the present application, during the process of opening the vent hole, the sealing portion moves in a direction away from the front wall surface of the door body 3 and the bottom wall surface of the door body 3 .

[0185] When the pressing part moves linearly along the first normal line and toward the side away from the storage chamber 20, the end of the conversion part connected to the sealing part rotates and moves toward the direction close to the vent hole. It can be arranged that, in the above process of closing the vent hole, the sealing part moves toward the direction close to the front wall surface of the door body 3 and the bottom wall surface of the door body 3.

[0186] In some embodiments of the present application, the linear motion of the pressing part is converted into the rotational motion of the sealing part by setting the pressing part and the conversion part, so that the sealing part opens or blocks the vent hole. When the user operates, the pressing part is manually exerted in one direction to make the pressing part move in a straight line, which is simple and convenient and meets the user's quick operation habits.

[0187] In some embodiments of the present application, the ventilation unit has a reset member. The reset member is configured such that when an external force acts on the pressing part to cause the pressing part to move in a straight line, the reset member is elastically deformed and stores elastic potential energy; when the external force acting on the pressing part to cause the sealing part to open the vent hole is removed, the reset member releases elastic energy to restore the pressing part and the conversion part to their initial positions, and the conversion part drives the sealing part to block the vent hole.

[0188] That is, after the pressing part finishes linear motion along the first normal line toward the side close to the storage chamber 20 and the external force is removed, the pressing part moves linearly along the first normal line toward the side away from the storage chamber 20 under the action of the reset member, and the end of the conversion part connected to the sealing part rotates and moves in a curve toward the vent hole, and the sealing part blocks the vent hole.

[0189] The door body 3 has a main body 37 and a door panel 38 located in front of the main body 37. The main body 37 of the door body 3 is provided with a recessed portion 371 with an opening toward the door panel 38, and the ventilation unit is installed in the recessed portion 371. An upper through hole 381 is formed on the door panel 38, so that the pressing portion of the ventilation unit can extend through the through hole 381, which is convenient for the user to perform a pressing operation.

[0190] In some embodiments of the present application, a fixing member 81 is disposed in the recessed portion 371 for fixing the ventilation unit to the door body 3 .

[0191] In some embodiments of the present application, the fixing member 81 is clamped and fixed to the inner wall surface of the recessed portion 371 .

[0192] In some embodiments of the present application, the fixing member 81 only occupies a portion of the bottom wall of the recessed portion 371 . The vent holes connecting the two opposite sides of the main body 37 are located on the bottom wall of the recessed portion 371 and in an area adjacent to the fixing member 81 .

[0193] In some embodiments of the present application, the pressing portion includes a button 51 .

[0194] In some embodiments of the present application, the pressing portion includes a button 51 and a pressing spring 58 disposed on the side of the button 51 close to the rear wall of the door body. When the user presses the button 51, the button 51 compresses the pressing spring 58. After the external force is removed, the pressing spring 58 returns to its original state, and its length is extended to drive the button 51 to return to its initial position.

[0195] In some embodiments of the present application, a spring mounting column 82 having a third through hole 821 is provided on the fixing member 81 .

[0196] As a possible configuration, the fixing member 81 is provided with two spring mounting posts 82 having third through holes 821. A pressing spring 58 is installed in each of the third through holes 821 of the two spring mounting posts 82. The two pressing springs 58 are located on one side of the button 51 close to the rear wall of the door body 3 and support the opposite ends of the button 51 to maintain the stability of the button 51 being pressed.

[0197] In some embodiments of the present application, the button 51 includes a pressing wall 52 and a pressing side wall 53 surrounding the pressing wall 52. One end of the pressing spring 58 is installed in the third through hole 821, and the other end cooperates with the pressing wall 52. When the pressing spring 58 is in a natural state, there is a certain distance between the pressing wall 52 and the end surface of the spring mounting column 82 close to the pressing wall 52, so as to ensure that when an external force acts on the button 51, the button 51 acts on the pressing spring 58 to compress the pressing spring 58. The above pressing side wall 53 passes through the through hole 381, and the pressing side wall 53 cooperates with the through hole 381 to guide the movement direction of the button 51.

[0198] In some embodiments of the present application, a stop plate is provided on the outer circumference of the pressing side wall 53 away from one end of the pressing wall 52; the stop plate is located on the side of the door panel 38 close to the main body 37 to prevent the button 51 from disengaging from the through hole 381 under the action of the pressing spring 58.

[0199] In some embodiments of the present application, a guide plate is provided on one side of the pressing wall 52 close to the spring mounting column 82. It can be provided that two guide plates are arranged in parallel and spaced apart. The two guide plates are located between the two pressing springs 58. For the convenience of description, the above two guide plates are recorded as the first guide plate 54 and the second guide plate 55.

[0200] The fixing member 81 is provided with a guide groove matched with the guide plate. Optionally, a first guide groove 83 and a second guide groove 84 are provided. The first guide plate 54 on the key 51 matches with the first guide groove 83, and the second guide plate 55 matches with the second guide groove 84, so that the first guide plate 54 moves in a straight line in the first guide groove 83, and the second guide plate 55 moves in a straight line in the second guide groove 84.

[0201] In some embodiments of the present application, the conversion part includes a first adapter 93 and a second adapter connected to each other. The first adapter 93 is connected to the pressing part. The sealing part is provided as a sealing plug 9, and the sealing plug 9 is connected to the second adapter. When the pressing part moves in a straight line, it drives the first adapter 93 to rotate, and the first adapter 93 drives the sealing plug 9 to move through the second adapter.

[0202] As a configurable manner, the first adapter 93 includes a first connecting plate 94, a second connecting plate 95, and a third connecting plate 96. Each of the first connecting plate 94, the second connecting plate 95, and the third connecting plate 96 has a connecting end connected to at least one of the other two connecting plates, and the end of the first connecting plate 94 away from its connecting end is recorded as the first end, the end of the second connecting plate 95 away from its connecting end is recorded as the second end, and the end of the third connecting plate 96 away from its connecting end is recorded as the third end.

[0203] In some embodiments of the present application, the first connecting plate 94, the second connecting plate 95, and the third connecting plate 96 are connected at the intersection. The end of the first connecting plate 94 away from the intersection is recorded as the first end, the end of the second connecting plate 95 away from the intersection is recorded as the second end, and the end of the third connecting plate 96 away from the intersection is recorded as the third end.

[0204] A first protrusion 941 and a second protrusion 942 are formed on the first end of the first connecting plate 94 . The first protrusion 941 and the second protrusion 942 share a central axis, and the first protrusion 941 and the second protrusion 942 are located at opposite sides of the first connecting plate 94 .

[0205] The first guide plate 54 of the pressing portion is formed with a first matching hole 56 , and the second guide plate is formed with a second matching hole 57 . The first protrusion 941 is installed in the first matching hole 56 , and the second protrusion 942 is installed in the second matching hole 57 .

[0206] The first matching hole 56 and the second matching hole 57 are long holes, so that the first protrusion 941 can move along the length direction of the long hole-shaped first matching hole 56, and the second protrusion 942 can move along the length direction of the long hole-shaped second matching hole 57. The length direction of the long hole-shaped first matching hole 56 and the second matching hole 57 is perpendicular to the moving direction of the key 51, so as to ensure that the first guide plate 54 and the second guide plate 55 move under the action of the key 51, and drive the first protrusion 941 and the second protrusion 942 to move in the same direction, and allow the first protrusion 941 to have a relative movement in the length direction of the first matching hole 56 of the first guide plate 54, and the second protrusion 942 to have a relative movement in the length direction of the second matching hole 57 of the second guide plate 55.

[0207] The fixing member 81 is provided with a third guide groove 85 , which is located between the first guide groove 83 and the second guide groove 84 , and the first connecting plate 94 is located in the third guide groove 85 .

[0208] As described above, the first guide groove 83 limits the moving direction of the first guide plate 54, the second guide groove 84 limits the moving direction of the second guide plate 55, the third guide groove 85 limits the moving direction of the first connecting plate 94, and the spring mounting column 82 limits the compression direction of the pressing spring 58. Under the limiting action of the above-mentioned components, an external force acts on the button 51, the button 51 acts on the pressing spring 58, the pressing spring 58 is compressed, the first guide plate 54 and the second guide plate 55 move with the button 51, and the first guide plate 54 and the second guide plate 55 drive the first connecting plate 94 to move in the third guide groove 85 through the first convex column 941 and the second convex column 942.

[0209] In some embodiments of the present application, a first rotating boss 951 and a second rotating boss 952 are formed on the second end of the second connecting plate 95. The first rotating boss 951 and the second rotating boss 952 are coaxial, and the first rotating boss 951 and the second rotating boss 952 are located on opposite sides of the second connecting plate 95.

[0210] The fixing member 81 is provided with a first rotation hole and a second rotation hole having a common central axis at positions adjacent to the third guide groove 85. The first rotation hole is formed on the first fixing plate 86, and the second rotation hole is formed on the second fixing plate 87. The first fixing plate 86 and the second fixing plate 87 are spaced apart, and the gap between the first fixing plate 86 and the second fixing plate 87 is consistent with the extension direction of the second guide groove 84. That is, the gap between the first fixing plate 86 and the second fixing plate 87 is connected to the second guide groove 84, and the two have a common central axis trajectory.

[0211] The second end of the second connecting plate 95 is located between the first fixing plate 86 and the second fixing plate 87. The first rotating boss 951 on the second connecting plate 95 is installed in the first rotating hole, and the second rotating boss 952 is installed in the second rotating hole, so that the second connecting plate 95 rotates relative to the first fixing plate 86 and the second fixing plate 87. It can be set that the second connecting plate 95 rotates relative to the first fixing plate 86 or the second fixing plate 87 with the central axis shared by the first rotating boss 951 and the second rotating boss 952 as the central axis.

[0212] In some embodiments of the present application, the second conversion member includes a conversion plate 72, and the conversion plate 72 includes a first side and a second side that are oppositely disposed, wherein the first side and the second side are perpendicular to the plane where the second connecting plate 95 is located.

[0213] A first limiting hole and a second limiting hole are formed at opposite ends of the first side of the conversion plate 72 ; a first through hole 75 and a second through hole 76 are formed at opposite ends of the second side of the conversion plate 72 .

[0214] A first limiting column 88 and a second limiting column 89 having a co-central axis are provided on the inner wall of the fixing member 81. The central axes of the first limiting column 88 and the second limiting column 89 are co-axial with the central axes of the first matching hole 56 and the second matching hole 57. The first limiting column 88 is installed in the first limiting hole, and the second limiting column 89 is installed in the second limiting hole, so that the conversion plate 72 can rotate relative to the fixing member 81.

[0215] In some embodiments of the present application, a first limiting hole is formed on the first connecting boss 73, and a second limiting hole is formed on the second connecting boss 74. A first return torsion spring 46 is sheathed on the first connecting boss 73, one of the torsion arms of the first return torsion spring 46 cooperates with the fixing member 81, and the other torsion arm cooperates with the conversion plate 72. A second return torsion spring 47 is sheathed on the second connecting boss 74, one of the torsion arms of the second return torsion spring 47 cooperates with the fixing member 81, and the other torsion arm cooperates with the conversion plate 72.

[0216] A third through hole 961 is provided at the third end of the third connecting plate 96. A connecting column 48 is provided through the first through hole 75, the second through hole 76 and the third through hole 961 to connect the third connecting plate 96 with the second side of the conversion plate 72, so that the conversion plate 72 can rotate along its rotation axis parallel to or coincident with the first side under the driving action of the third connecting plate 96.

[0217] It can be provided that both ends of the connecting column 48 are provided with a stopper 49. The stopper 49 at at least one end of the connecting column 48 is detachably connected to the connecting column 48. After the connecting column 48 passes through the first through hole 75, the third through hole 961 and the second through hole 76, the two ends are fixed to prevent the connecting column 48 from being separated from the above through holes, thereby increasing the connection strength of the connecting column 48, the third connecting plate 96 and the conversion plate 72 and improving the overall stability.

[0218] In some embodiments of the present application, a mounting seat 29 for fixing the sealing plug 9 is provided at the second side of the conversion plate 72, so that when the key 51 is in the initial state, the sealing plug 9 blocks the vent hole.

[0219] In some embodiments of the present application, the mounting seat 29 has a first connecting plate 291, a second connecting plate 292, a third connecting plate 293 and a fourth connecting plate 294. When the sealing plug 9 blocks the vent hole, the first connecting plate 291 is parallel to the central axis of the spring mounting column 82, the second connecting plate 292 is located on the side of the first connecting plate 291 away from the spring mounting column 82, and the dihedral angle between the second connecting plate 292 and the second connecting plate 292 is an acute angle; the third connecting plate 293 and the fourth connecting plate 294 are both connected to the first connecting plate 291 and the second connecting plate 292, and the fourth connecting plate 294 is located on the side of the second side of the third connecting plate 293 away from the conversion plate 72. As a configurable manner, the third connecting plate 293 and the fourth connecting plate 294 are both perpendicular to the first connecting plate 291;

[0220] A snap-fit ​​hole is formed on the fourth connecting plate 294, and a snap-fit ​​recess is formed on the sealing plug 9. One end of the sealing plug 9 passes through the snap-fit ​​hole and is installed between the third connecting plate 293 and the fourth connecting plate 294, and the fourth connecting plate 294 is snap-fitted with the snap-fit ​​recess of the sealing plug 9. The sealing plug 9 is located at one end of the fourth connecting plate 294 away from the third connecting plate 293 and matches with the vent hole.

[0221] When the ventilation unit is in the closed state, the sealing plug 9 blocks the ventilation hole.

[0222] Combination Figure 17-Figure 20 As shown, when the vent hole needs to be opened, the button 51 is pressed, and the button 51 applies pressure to the pressing spring 58, and the pressing spring 58 contracts; the button 51 drives the first guide plate 54 and the second guide plate 55 to move in the same direction, and the first guide plate 54 and the second guide plate 55 drive the first connecting plate 94 to move. The first connecting plate 94 drives the second connecting plate 95 and the third connecting plate 96 to move; because the second end of the second connecting plate 95 rotates around the fixed axis, the second connecting plate 95 rotates under the driving action of the first connecting plate 94; at the same time, the first protrusion 941 on the first connecting plate 94 moves relative to the first matching hole 56 of the first guide plate 54 along its length direction, and the second protrusion 942 on the first connecting plate 94 moves relative to the second matching hole 57 of the second guide plate 55 along its length direction. The third connecting plate 96 rotates around the rotation axis of the second connecting plate 95 driven by the first connecting plate 94 and the third connecting plate 96, and the third connecting plate 96 drives the conversion plate 72 to rotate around the common rotation axis with the second connecting plate 95 through the connecting column 48, and compresses the first return torsion spring 46 and the second return torsion spring 47, and the first return torsion spring 46 and the second return torsion spring 47 store elastic potential energy. The conversion plate 72 drives the sealing plug 9 away from the vent hole through the mounting seat 29, and the vent hole is opened, and the outside gas enters the storage chamber 20 through the vent hole.

[0223] When the external force acting on the button 51 is removed, the first return torsion spring 46, the second return torsion spring 47 and the pressing spring 58 release their elastic potential energy, so that the button 51, the first adapter 93 and the second adapter return to their original state, and the sealing plug 9 blocks the vent hole again and presses the vent hole under the action of the first return torsion spring 46 and the second return torsion spring 47 to ensure the effectiveness of the seal.

[0224] Under the elastic pressure of the first return torsion spring 46 and the second return torsion spring 47, the sealing plug 9 has sufficient sealing force to effectively ensure the sealing performance.

[0225] In some embodiments of the present application, in the plane where the first connecting plate 94 is located, the angle between the first connecting plate 94 and the third connecting plate 96 is a straight angle, and the angle between the second connecting plate 94 and the third connecting plate 96 is an acute angle.

[0226] See also Figure 21-24 A retractable guide rail device is provided between the storage container 14 and the shell 2, so that the door body 3 and the storage container 14 can be smoothly pulled out of the shell 2 or pushed into the shell 2. Among them, the low-pressure storage device is provided with a locking structure to lock the door body 3 and the shell 2 when the door body 3 is closed.

[0227] As a configurable method, the locking structure is arranged on the guide rail device, and is used to lock the door body 3 in the pre-locking position when the door body 3 closes the storage opening 21 and the sealing element 4 is compressed to a certain length, and allows the door body 3 to continue to move a certain distance in the closing direction under the action of the force. Among them, when the locking structure locks the door body 3 in the pre-locking position, under the action of the door body 3 and the shell 2, the sealing element 4 is in a compressed state to ensure that the pre-locking position has a certain sealing performance. When in the pre-locking position, the length by which the sealing element 4 is compressed is recorded as the pre-locking compression distance L 1 , where the pre-locking compression distance L 1 Less than the maximum deformable distance L 0 , so that when the door body 3 continues to move in the closing direction from the pre-locking position, the sealing element 4 is further compressed, and the sealing performance between the door body 3 and the housing 2 is enhanced.

[0228] When the door body 3 closes the storage port 21 and the sealing element 4 is compressed to a length reaching the pre-locking compression distance L 1 , the locking structure on the guide rail device locks the door body 3 and the housing 2 in the pre-locking position. In the pre-locking position, the vacuum device is started, and the vacuum rate of the vacuum device is much greater than the speed at which the external atmosphere enters the storage chamber 20. The air pressure in the storage chamber 20 decreases, and the external atmospheric pressure is greater than the air pressure in the storage chamber 20. Under the pressure difference between the external atmospheric pressure and the air pressure in the storage chamber 20, the door body 3 drives the storage container 14 to produce a slight displacement along the first moving direction through the guide rail device, and the sealing element 4 is further compressed. After the vacuuming is completed, the length of the sealing element 4 compressed is the vacuum compression distance L2 , which is greater than the pre-locking compression distance L 1 The sealing performance of the door body 3 and the shell 2 is enhanced, and the sealing performance of the closed storage cavity formed by the door body 3 and the shell 2 is increased, which can effectively prolong the vacuum retention time.

[0229] As described above, during the operation of the vacuum device, as the vacuum time of the vacuum device increases, as the air pressure in the storage chamber 20 continues to decrease, the pressure difference between the external atmospheric pressure and the air pressure in the storage chamber 20 increases, and the sealing element 4 is continuously compressed to form a vacuum sealing state.

[0230] The above scheme set up in the present application breaks the conventional setting method of forming a high-sealing environment before vacuuming (the user applies external force to lock the door body and the shell 2 through the locking device). The present invention only uses a locking structure with a small volume and small locking force to lock the door body and the shell 2 to form a pre-sealed condition, and then uses the negative pressure generated by vacuuming to assist in forming a high-sealing condition to meet the vacuum sealing condition.

[0231] At the end of the vacuum device operation, the compressed length of the sealing element 4 is recorded as the vacuum compression distance L. 2 , at this time, the door is in a vacuum locked state. In some embodiments of the present application, the vacuum compression distance L 2 >Pre-lock compression distance L 1 , and the vacuum compression distance L 2 ≤ Maximum deformable distance L 0 . To ensure that the sealing element 4 is continuously compressed and the sealing performance is continuously increased during the process of the door body 3 changing from the pre-locking state to the vacuum locking state.

[0232] In some embodiments of the present application, the pre-locking compression distance L 1 : Maximum deformable distance L 0 ∈[0.05, 0.1] Any value. Configurable, pre-lock compression distance L 1 ∈(0, 1] any value, unit: mm. When the door body 3 is closed, the door body 3 and the shell 2 squeeze the sealing element 4 to achieve a pre-locking position with a slight deformation. When the user pushes the drawer unit into the storage chamber 20, the door body 3 can be closed to a locked state without deliberately increasing the force, so that the storage chamber 20 reaches a pre-sealed state, providing initial sealing conditions for vacuuming.

[0233] In some embodiments of the present application, the guide rail device has an outer rail 35 and an inner rail 33. The outer rail 35 is fixedly connected to the inner wall of the housing 2, the inner rail 33 is fixedly connected to the storage container 14, and the outer rail 35 and the inner rail 33 are movably connected.

[0234] During the process of opening the door body 3, the door body 3 moves along the first moving direction, the door body 3 drives the storage container 14 to move along the first moving direction, the storage container 14 drives the inner rail 33 to move along the first moving direction, the inner rail 33 moves relative to the outer rail 35 along the first moving direction toward the side away from the rear wall of the shell 2, and the storage container 14 is pulled out of the storage chamber 20, which is convenient for users to take and put items.

[0235] During the closing process of the door body 3, the door body 3 moves along the second moving direction, the door body 3 drives the storage container 14 to move along the second moving direction, the storage container 14 drives the inner rail 33 to move along the second moving direction, the inner rail 33 moves relative to the outer rail 35 along the second moving direction toward the side close to the rear wall of the shell 2, the storage container 14 is pushed into the storage chamber 20, the door body 3 closes the storage opening 21, the locking structure locks the door body 3 in the pre-locking position, and the sealing element 4 is compressed by the pre-locking compression distance L 1 , the door body 3 is sealed and connected to the shell body 2.

[0236] The vacuum device is started, and the vacuum rate of the vacuum device is much greater than the speed at which the external atmosphere enters the storage chamber 20. The air pressure in the storage chamber 20 decreases, and the external atmospheric pressure is greater than the air pressure in the storage chamber 20. Under the pressure difference between the external atmospheric pressure and the air pressure in the storage chamber 20, the door body 3 drives the storage container 14 to produce a slight displacement along the first moving direction through the guide rail device, and the sealing element 4 is further compressed. After the vacuum is completed, the length of the sealing element 4 compressed is the vacuum compression distance L. 2 , which is greater than the pre-locking compression distance L 1 The sealing performance of the door body 3 and the shell 2 is enhanced, and the sealing performance of the closed storage cavity formed by the door body 3 and the shell 2 is increased, which can effectively prolong the vacuum retention time.

[0237] In some embodiments of the present application, the guide rail device has an inner rail 33, a middle rail 34, and an outer rail 35. The outer rail 35 is fixedly connected to the inner wall of the housing 2, and the middle rail 34 is movably connected to the outer rail 35; the inner rail 33 is fixedly connected to the storage container 14 and movably connected to the middle rail 34. The middle rail 34 is provided above, and the extension shaft is movably connected to the outer rail 35 and the inner rail 33 at the same time, which effectively extends the extension stroke of the guide rail device.

[0238] During the process of opening the door body 3, the door body 3 moves along the first moving direction, the door body 3 drives the storage container 14 to move along the first moving direction, the storage container 14 drives the inner rail 33 to move along the first moving direction, the inner rail 33 moves a certain distance relative to the middle rail 34 along the first moving direction, the middle rail 34 moves a certain distance relative to the outer rail 35 along the first moving direction, and the storage container 14 is drawn out from the storage chamber 20, which is convenient for users to take and put items. As described above, during the process of opening the door body 3, the inner rail 33 moves a certain distance relative to the middle rail 34 along the first moving direction, and the middle rail 34 moves a certain distance relative to the outer rail 35 along the first moving direction, which effectively extends the extension stroke of the guide rail device, so that the storage container 14 can be completely drawn out from the storage chamber 20, which is convenient for users to take and put items.

[0239] During the closing process of the door body 3, the door body 3 moves along the second moving direction, the door body 3 drives the storage container 14 to move along the second moving direction, the storage container 14 drives the inner rail 33 to move along the second moving direction, the inner rail 33 moves a certain distance relative to the middle rail 34 along the second moving direction, the middle rail 34 moves a certain distance relative to the outer rail 35 along the second moving direction, the storage container 14 is pushed into the storage chamber 20, the door body 3 closes the storage opening 21, the locking structure locks the door body 3 in the pre-locking position, and the sealing element 4 is compressed by the pre-locking compression distance L 1 , the door body 3 is sealed and connected to the shell body 2.

[0240] After the door body 3 is closed to the pre-locking position, the vacuum device is activated. The vacuum rate of the vacuum device is much greater than the speed at which the external atmosphere enters the storage chamber 20. The air pressure in the storage chamber 20 decreases, and the external atmospheric pressure is greater than the air pressure in the storage chamber 20. Under the pressure difference between the external atmospheric pressure and the air pressure in the storage chamber 20, the door body 3 drives the storage container 14 to move from the pre-locking position along the second moving direction through the guide rail device, and the sealing element 4 is further compressed. After the vacuum is completed, the sealing element 4 is compressed by a distance greater than the pre-locking compression distance L 1 The sealing performance of the door body 3 and the shell 2 is enhanced, and the sealing performance of the closed storage cavity formed by the door body 3 and the shell 2 is increased, which can effectively prolong the vacuum retention time.

[0241] The above settings in this application are no different from the user's pushing operation when pushing the drawer unit in a conventional drawer-type non-low-pressure storage device. It is sufficient to push the drawer unit to the closed position of the door body 3 (the door body 3 cooperates with the sealing element 4) with external force, and no additional operation is required for locking. That is, the setting of this application locks the door body 3 and the shell 2 when the user pushes the drawer unit to close, and the compressed part of the sealing element 4 forms a pre-seal; no other additional special operations are required to form sealing conditions. Then, through the pre-locking of the locking structure and the increase in the air pressure difference when the vacuum device is working, the door body 3 and the shell 2 are further sealed and matched, thereby improving the sealing and ensuring the vacuum degree.

[0242] In some embodiments of the present application, Fig.21 As shown, the locking structure on the guide rail device is set as a push-to-open locking structure. Take the initial state of the push-to-open locking structure as an example for explanation. Press the push-to-open locking structure once, and the push-to-open locking structure is converted from the unlocked state to the locked state; press the push-to-open locking structure again, and the push-to-open locking structure is converted from the locked state to the unlocked state. That is, by pressing the push-to-open locking structure once, the push-to-open locking structure is converted between the locked state and the unlocked state.

[0243] In some embodiments of the present application, a push-to-lock structure is used to pre-seal the low-pressure storage device, and the vacuum pump 32 is turned on to evacuate. After the vacuum is completed, the pressure difference between the inside and outside of the storage chamber 20 acts on the door body 3, and the push-to-lock structure is pressed again.

[0244] In some embodiments of the present application, after the internal and external pressures of the storage chamber 20 are balanced by the ventilation unit (electronic ventilation unit or mechanical button-type ventilation unit), there is no internal and external pressure difference in the storage chamber 20; that is, the force of pressing the push-to-pop locking structure again is removed. At this time, the push-to-pop locking structure is unlocked and pops open, and the door body 3 automatically pops open under the push elastic force when the push-to-pop locking structure is unlocked, and the low-pressure storage device can be automatically opened.

[0245] In some embodiments of the present application, the sealing element 4 of the low-pressure storage device has a maximum deformable distance L 0 The push-to-lock structure has an unlocking stroke J 0 The maximum deformable distance L of the sealing element 4 0 Greater than the unlocking stroke J of the push-to-lock structure 0 (L 0 >J 0 ). In the early stage of closing the door body 3 of the low-pressure storage device, under the action of the push-to-lock structure, the door body 3 and the housing 2 squeeze the sealing element 4, so that the door body 3 is in the pre-locking position to form a pre-seal.

[0246] At this time, the sealing element 4 is compressed to a pre-locking compression distance L. 1 After the vacuum pump 32 is evacuated, a negative pressure (adjustable, the pressure value is lower than 0.9atm) is formed in the low-pressure storage device. At this time, under the action of the internal and external pressure difference of the low-pressure storage device on the door body 3, the sealing element 4 is squeezed and its compression distance reaches the vacuum compression distance L. 2 At this time, the door body 3 acts on the push-to-pop locking structure, triggering the pop-opening action of the push-to-pop locking structure.

[0247] When the internal and external pressure difference of the low-pressure storage device is relieved (leakage or opening of the ventilation unit), the push-to-lock structure is unlocked. 2 -L 1 ≥J 0, so that the push-to-lock structure is triggered to unlock in the vacuum sealing state, so that when the internal and external pressure difference of the low-pressure storage device is released, the push-to-lock structure is unlocked, driving the door body to open automatically.

[0248] As a configurable manner, the sealing element 4 of the low-pressure storage device is compressed from the pre-sealing position to the maximum deformation distance L of the sealing element 4. 0 When the sealing element 4 is compressed, the distance L 0 -L 1 . Push-to-lock unlocking travel J 0 Among them, L 0 -L 1 ≥J 0 To ensure that the push-to-lock structure can be unlocked under external force. 0 -L 1 Any value between 2mm and 3mm, J 0 Any value between 1mm-2mm.

[0249] In some embodiments of the present application, after the internal and external pressure difference of the low-pressure storage device is released, the push-to-lock structure is still in a self-locking state. That is, under the action of the internal and external pressure difference of the low-pressure storage device on the door body 3, the sealing element 4 is squeezed, and its compression distance reaches the vacuum compression distance L 2 At this time, the door body 3 acts on the push-to-pop locking structure, but it is not enough to trigger the push-to-pop locking structure to open. At this time, the vacuum compression distance L 2 <Maximum deformation distance L 0 ; L 2 -L 1 <J 0 , and L 0 -L 1 ≥J 0 . To ensure that the push-to-lock structure can be unlocked under the action of external force, and to keep the push-to-lock structure in a locked state when the internal and external pressure difference of the low-pressure storage device is released.

[0250] In some embodiments of the present application, the internal pressure value of the low-pressure storage device is P 1 (e.g. 0.7-0.9 atm), the pressure value outside the door 3 of the low-pressure storage device is P 0 (For example, 1 atm). The area of ​​the door body 3 is S, and the force of the push-to-open locking structure to trigger the door to open is F. 1 , F 1 <(P 0 -P 1 )*S. The above arrangement enables the low-pressure storage device to automatically pop open after the ventilation unit is opened.

[0251] In some embodiments of the present application, Figure 22-Figure 23As shown, the locking structure on the guide rail device is set as a locking structure with double self-locking function. When the door body 3 is closed, the inner rail 33 moves in the closing direction, and after moving a first distance, the inner rail 33 and the outer rail 35 complete the first level of locking. After the first level of locking, the inner rail 33 continues to move a second distance in the closing direction, and the inner rail 33 and the outer rail 35 complete the second level of locking. The locking structure of the guide rail device with double self-locking function can realize the double locking function, improve the self-locking effect, promote the complete closure of the drawer unit, enhance the stability and reliability of the use performance of the drawer unit, and ensure the use quality of the product.

[0252] In some embodiments of the present application, when the inner rail 33 and the outer rail 35 complete the first-level locking, the door body 3 reaches the pre-locking position. When the door body 3 reaches the second-level locking, the storage chamber 20 is evacuated and the door body 3 is in a vacuum locking state. At this time, the door body 3 of the low-pressure storage device is affected by the second-level locking on the one hand, and the pressure difference between the inside and the outside is affected, which effectively ensures the sealing of the door body 3 and the shell 2, reduces the amount of air leakage, and prolongs the pressure holding time.

[0253] As a configurable manner, a first locking portion is provided on the inner rail 33 and a second locking portion is provided on the outer rail 35; when the door body 3 is closed and moves a first distance, the first locking portion cooperates with the second locking portion to complete the first level of locking.

[0254] Then, a certain external force is applied to the inner rail 33, or under the action of the inertia force of the inner rail 33, or under the action of the elastic tension triggered by the first-level locking action, the inner rail 33 continues to move a second distance in the closing direction, and the inner rail 33 and the outer rail 35 complete the second-level locking.

[0255] In some embodiments of the present application, Figure 22-Figure 23 As shown, the second locking portion is arranged on the first connecting member, and the first connecting member is rotatably connected to the outer rail 35. A torsion spring is arranged between the first connecting member and the end of the outer rail 35 away from the storage port 21. When the first locking portion and the second locking portion cooperate to complete the first-level locking, the first locking portion on the inner rail 33 compresses the torsion spring arranged at one end of the outer rail 35 close to the rear wall of the shell 2 through the first connecting member, so that the torsion spring is compressed in the radial direction. When the first locking portion and the second locking portion are locked to complete the first-level locking, the torsion spring reaches the critical value of the torsion spring. After that, the torsion spring begins to stretch, and the torsion spring drives the inner rail 33 to continue to move a second distance in the closing direction through the first connecting member to complete the second-level locking. The above arrangement enables the door body 3 to automatically complete the second-level locking after the first-level locking is completed after closing.

[0256] The locking structure with double self-locking function has a large locking force, with a spring force of 15-20N, and is reliable, stable and has a long service life.

[0257] In some embodiments of the present application, Fig.24As shown, the locking structure on the guide rail device is set as a lock switch type locking structure. It can be set that when the lock switch type locking structure is locked, the door body 3 reaches the pre-locking position.

[0258] The first-level locking arrangement of the locking structure with the double self-locking function is the same as above. The inner rail 33 is provided with a first locking portion, and the outer rail 35 is provided with a second locking portion. When the door body 3 is closed, under the push of an external force, after the door body 3 moves a first distance, the first locking portion cooperates with the second locking portion to complete the locking.

[0259] As a configurable manner, the first locking portion is provided with a buckle, and the second locking portion is provided with a slot. When the first locking portion and the second locking portion cooperate, the first locking portion undergoes elastic deformation and enters the slot, and then the first locking portion has at least a recovery portion to complete locking with the second locking portion.

[0260] In some embodiments of the present application, a pressure monitoring unit is provided in the low-pressure storage device to monitor the pressure state in the storage chamber 20 in real time.

[0261] When the vacuum device is working, the pressure monitoring unit monitors the pressure in the storage chamber 20. When the pressure in the storage chamber 20 reaches a first pressure value, the vacuum device stops working.

[0262] As the low-pressure storage device is placed for a longer time, external gas slowly enters the storage chamber 20, and the pressure value in the storage chamber 20 increases. When the pressure in the storage chamber 20 rises to a second pressure value, the vacuum device is started to reduce the pressure in the storage chamber 20.

[0263] In some embodiments of the present application, the second pressure value is lower than the standard atmospheric pressure, and the second pressure value is higher than the first pressure value; the above setting enables the low-pressure storage unit to always keep its internal pressure lower than the standard atmospheric pressure while keeping the door body 3 closed, so as to extend the food preservation.

[0264] In some embodiments of the present application, Figure 25-26 As shown, the refrigerator includes two doors 11 arranged opposite to each other, and the two doors 11 arranged opposite to each other cooperate to open or close the access opening 13. Among them, a flip beam 5 is provided on one end of one door 11 close to the other door 11. A guide rail is provided on the top wall of the storage chamber 12 of the refrigerator, and the flip beam 5 can slide with the guide rail to achieve the switching of the flip beam 5 relative to the door 11 at different angles. When the two doors 11 are closed, the flip beam 5 closes the gap between the two doors 11 and the box body 10 to effectively prevent the cold air from overflowing.

[0265] In some embodiments of the present application, the rotation axis of the flip beam 5 is recorded as the flip axis M; the flip beam 5 includes a free end 50 parallel to the flip axis M, and the free end 50 rotates around the flip axis M. The flip beam 5 is located in an area of ​​the door body 3 of the low-pressure storage device away from the housing 2; that is, the flip beam 5 is located in the front area of ​​the door body 3 of the low-pressure storage device.

[0266] In some embodiments of the present application, when the box door 11 is closed, on the projection of the plane where the access opening 13 is located, the projection of the flip beam 5 and the projection of the door body 3 of the low-pressure storage device cross-overlap.

[0267] In some embodiments of the present application, when the box door 11 is closed, on the projection of the plane where the access port 13 is located, the direction perpendicular to the flip axis M of the flip beam 5 is recorded as the first direction; the midpoint of the projection of the door body 3 of the low-pressure storage device along the first direction is recorded as O; the reference line passing through the midpoint O and perpendicular to the first direction is recorded as the first reference line L.

[0268] When the box door 11 is closed, the flip beam 5 acts on the door body 3, and the door body 3 moves along the second moving direction through the guide rail device under the action of the flip beam 5, so that the locking structure is locked and the door body 3 is in the pre-locking position.

[0269] In some embodiments of the present application, during the closing process of the box door 11, on the projection of the plane where the access opening 13 is located, the projection of the flip beam 5 overlaps with the first reference line L of the door body 3 of the low-pressure storage device. With the above arrangement, when the box door 11 is closed, the flip beam 5 acts on the middle area of ​​the door body 3 along the first direction to make the force on the door body 3 more balanced. Under the force of the flip beam 5 on the door body 3 when flipping, the door body 3 moves along the second moving direction through the guide rail device.

[0270] In some embodiments of the present application, when the low-pressure storage device has not reached the pre-locking position, the box door 11 with the flip beam 5 is in the closing process, and the flip beam 5 interacts with the door body 3 of the low-pressure storage device when flipping around its flip axis M, so as to apply a force toward the shell 2 to the door body 3, so that the door body 3 moves toward the side close to the shell 2, so that the door body 3 is locked with the shell 2 and is in the pre-locking position.

[0271] In some embodiments of the present application, when the door body 3 is in the process of being opened and the door body 3 reaching the pre-locked position, the box door 11 with the flip beam 5 pushes the door body 3 to move along the second direction during the closing process. Under the above settings, in the direction perpendicular to the plane where the access opening 13 is located, during the flipping process of the flip beam 5, the maximum displacement of the free end 50 entering the storage room is recorded as W; when the door body 3 and the shell 2 are in the pre-locked position, the distance between the front end of the door body 3 and the plane where the access opening 13 is located is recorded as D; D≤W. The plane where the access opening 13 is located is the plane where the matching surface of the box door 11 and the box body 10 is located when the box door 11 is closed.

[0272] It should be noted that, during the closing process of the door 11, the flip beam 5 can be flipped smoothly under the force of the door closing. That is, during the closing process of the door 11, W<D+(L 0 -L 1 ). When the door 11 is closed, the compression distance of the sealing element 4 by the free end 50 of the flip beam 5 after entering the storage room through the door body 3 is less than the deformable amount of the sealing element 4, thereby ensuring that the flip beam 5 can flip into place during the closing process of the door 11, avoiding the rigid interference between the door body 3 and the flip beam 5, which causes the flip beam 5 to fail to flip into place.

[0273] In some embodiments of the present application, when the door body 3 moves along the second direction to the first position under the action of an external driving force, the external driving force is removed, and the door body 3 continues to move along the second direction under the action of inertia and reaches the pre-locking position, thereby completing the locking of the door body 3 and the shell 2.

[0274] Under the above settings, when the door body 3 is in the first position, the distance between the front end of the door body 3 and the plane where the access opening 13 is located is recorded as D 1 , where D 1 <D. As above, in the direction perpendicular to the plane where the access opening 13 is located, during the turning process of the turning beam 5, the maximum displacement of the free end 50 entering the storage room is recorded as W; where D 1 =W. In the process from the door body 3 being opened to the door body 3 reaching the first position, the box door 11 with the flip beam 5 pushes the door body 3 to move along the second direction during the closing process; when the door body 3 reaches the first position, the displacement of the free end 50 of the flip beam 5 entering the storage room reaches the maximum, the flip beam 5 continues to flip, the displacement of the free end 50 of the flip beam 5 entering the storage room decreases, and the door body 3 continues to move along the second moving direction under the action of the inertia force and reaches the pre-locking position.

[0275] In some embodiments of the present application, D 1 ≤W,D 1 ≤W≤D. That is, in this embodiment, when the door body 3 is in the open state, the box door 11 with the flip beam 5 pushes the door body 3 to move along the second moving direction during the closing process; after the door body 3 reaches the first position and before it reaches the pre-locking position, the displacement of the free end 50 of the flip beam 5 entering the storage room reaches the maximum, the flip beam 5 continues to flip, and the displacement of the free end 50 of the flip beam 5 entering the storage room decreases, and the door body 3 continues to move along the second moving direction under the action of inertia force and reaches the pre-locking position.

[0276] The present invention defines the relative position of the flip beam 5 and the door body 3 of the low-pressure storage device, and can lock the door body 3 and the shell 2 of the low-pressure storage device that have not reached the pre-locking position to the pre-locking position during the flipping process of the flip beam 5, thereby effectively preventing the user from failing to reach the pre-locking state due to insufficient pushing force during use, thereby causing the pre-seal to fail, resulting in ineffective exhaust of the vacuum device (vacuum pump 32), thereby effectively reducing noise and power consumption.

[0277] At present, during the vacuuming process of the fresh-keeping drawer, the power or speed of the vacuum pump 32 is usually reduced to match the working mode of the refrigerator to avoid resonance, thereby reducing the noise of the vacuuming operation, making the noise of the vacuum pump 32 easily acceptable to users. The above solution of the present application uses pressure difference to achieve the initial state to form a low-pressure environment in the drawer unit, and its vacuuming working state in the initial state is inconsistent with the conventional vacuuming working state.

[0278] In some embodiments of the present application, as the vacuum is drawn, the door body 3 and the housing 2 act to compress the sealing element 4 to a vacuum sealing distance L. 3 The vacuum sealing condition is achieved.

[0279] In some embodiments of the present application, a position sensor is provided to detect whether the door body 3 has reached the vacuum sealing distance L when the sealing element 4 is compressed. 3 Wait for the door body 3 and the shell 2 to compress the sealing element 4 to the vacuum sealing distance L 3 When , the position sensor is triggered, and the vacuum pump 32 ends the first state and operates in the second state.

[0280] In some embodiments of the present application, it can be arranged that the door body 3 and the housing 2 act to compress the sealing element 4 to a vacuum sealing distance L. 3 The time required for the door 3 and the housing 2 to compress the sealing element 4 to the vacuum sealing distance L 3 At least one of the corresponding air pressure in the low-pressure storage device, the air pressure change rate, the current of the vacuum pump 32, the exhaust flow rate of the vacuum pump 32, etc. is used as a judgment condition for the vacuum pump 32 to end the first state operation and start the second state operation.

[0281] The door body 3 and the housing 2 act to compress the sealing element 4 to a vacuum sealing distance L. 3 When the corresponding air pressure in the low-pressure storage device drops to a set value, it indicates that the difference between the external environment air pressure and the air pressure in the low-pressure storage device reaches a value that allows the door body 3 and the shell 2 to squeeze the sealing element 4 to achieve a vacuum sealing condition.

[0282] The door body 3 and the shell 2 squeeze the sealing element 4. As the air extraction time increases, the air pressure in the low-pressure storage device decreases, the air extraction resistance of the vacuum pump 32 increases, and the current of the vacuum pump 32 increases accordingly.

[0283] In some embodiments of the present application, when the door body 3 is closed to the pre-locking position, the vacuum pump 32 works in the first state; the air pressure in the low-pressure storage device decreases, the door body 3 moves along the second displacement direction, and the door body 3 and the shell 2 act to compress the sealing element 4 to the vacuum sealing distance L 3 When the vacuum pump 32 starts to work in the second state, the vacuum pump 32 starts to work in the second state. The vacuum pump 32 has a greater suction volume (discharge volume) when working in the first state than the suction volume (discharge volume) when working in the second state, so as to quickly form a vacuum sealing condition.

[0284] In some embodiments of the present application, the first state is set to a first speed V 1 , the second state is set to the second speed V 2 Among them, the second speed V 2 Less than the first speed V 1 The rated speed of the vacuum pump 32 is denoted as V 0 Among them, V 1 Belongs to 0.8V 0 ~V 0 For any value, V 2 Belongs to 0.5V 0 ~0.8V 0 Any of these values.

[0285] In some embodiments of the present application, the first state is set to a first power P 1 , the second state is set to the second power P 2 ; Wherein, the second power P 2 Less than the first power P 1 The rated power of the vacuum pump 32 is denoted as P 0 Among them, P 1 Belongs to 0.8P 0 ~P 0 Any value of P 2 Belongs to 0.5P 0 ~0.8P 0 Any of these values.

[0286] As described above, in the embodiment of the present application, when evacuating, the vacuum pump 32 first operates in the first state to quickly evacuate air, so as to ensure that the evacuation volume of the vacuum pump 32 is greater than the intake volume of air from the external environment into the storage chamber 20, and quickly create a vacuum sealing condition. When the vacuum sealing condition is achieved, the vacuum pump 32 then operates in the second state that is lower than the first working state, reduces the evacuation rate, reduces the noise of the vacuum operation, and controls the vacuum noise within an acceptable range.

[0287] In some embodiments of the present application, Figure 2 As shown, a cover plate assembly is provided on the upper part of the shell 2 of the low-pressure storage device, and the cover plate assembly is connected to the shell 2; and one or more operation buttons are provided on the cover plate.

[0288] As another configurable method, the operation button is used to turn on or off the vacuuming, so that the user can manually control the vacuuming.

[0289] As another configurable manner, the operation button is used to control the on / off state of the ventilation unit to control the connection and disconnection between the storage chamber 20 and the outside.

[0290] In some embodiments of the present application, Fig. 27 As shown, a gas-adjusting membrane assembly and a ventilation unit are provided in the storage chamber 20. The ventilation unit is an electronic ventilation unit 31, and the opening or closing state of the electronic ventilation unit 31 is controlled by a controller to connect or disconnect the storage chamber 20 with the external environment. The gas-adjusting membrane assembly has a nitrogen-oxygen separation membrane 36, and the gas-adjusting membrane (nitrogen-oxygen separation membrane 36) has oxygen-affinity groups. Compared with nitrogen, carbon dioxide, etc., oxygen is more likely to adhere to oxygen-affinity groups; that is, a large amount of oxygen is attached to the nitrogen-oxygen separation membrane 36.

[0291] In some embodiments of the present application, when the door body 3 is closed (it can be set that the door body 3 is closed to the pre-locking position), the ventilation unit is opened, and the storage chamber 20 is connected to the external environment. When the vacuum pump 32 exhausts air for a preset exhaust time, a low oxygen environment is formed in the storage chamber 20; at this time, the ventilation unit is closed, the storage chamber 20 is disconnected from the external environment, the vacuum pump 32 continues to work, and the air pressure in the low-pressure storage unit is reduced, and finally a low-oxygen and low-pressure storage environment is formed, so as to effectively extend the preservation time.

[0292] In the above process, when the ventilation unit is turned on and the vacuum pump 32 is working, a large amount of oxygen in the storage chamber 20 is attached to the gas-controlled membrane assembly; that is, the oxygen concentration on the gas-controlled membrane assembly is higher (greater than the oxygen content in the air). At this time, the vacuum pump 32 is working, and there is a pressure difference on the nitrogen-oxygen separation membrane 36. The gas extracted by the vacuum pump 32 at this time has a higher content than when the gas is extracted without the gas-controlled membrane assembly. The oxygen content in the gas extracted by the vacuum pump 32 is recorded as the oxygen-rich concentration C 1 The oxygen content in the air is C0 Among them, C 1 >C 0 That is, the oxygen concentration in the gas entering the storage chamber 20 from the outside is C 0 The oxygen content is lower than the oxygen content in the gas extracted from the storage chamber 20 by the vacuum pump 32 .

[0293] It should be noted that, as a configurable method, the oxygen concentration mentioned above is the molecular weight of oxygen in a unit space.

[0294] A large amount of oxygen in the air entering the storage chamber 20 from the outside adheres to the nitrogen-oxygen separation membrane 36. The oxygen content in the storage chamber 20 is lower than the oxygen content on the nitrogen-oxygen separation membrane 36. As the vacuum pump 32 continues to work and pump air, the oxygen concentration in the storage chamber 20 increases from C 0 Reduce to C 2 , the oxygen concentration reaches a balanced state, and the oxygen content cannot decrease even if the air is pumped continuously; a hypoxic environment is formed at this time.

[0295] In some embodiments of the present application, nitrogen and oxygen are first separated from the gas in the storage chamber 20, so that the storage chamber 20 is in a state of oxygen reduction at normal pressure. 0 Reduce to C 2 After that, the low-pressure storage device is sealed and then evacuated. When the pressure in the low-pressure storage device is reduced to the first pressure value (0.7 atmospheres), the oxygen concentration in the storage chamber 20 can be reduced to C 3 , forming a low-oxygen and low-pressure environment, which can achieve a better preservation effect. 3 <C 2 <C 0 .

[0296] In some embodiments of the present application, the modified atmosphere membrane assembly is disposed near a vacuum port connecting the vacuum pump 32 and the storage chamber 20 to quickly form a pressure difference on both sides of the nitrogen-oxygen separation membrane 36 to extract oxygen from the storage chamber 20 .

[0297] In some embodiments of the present application, an opening 28 is formed on the housing 2, and a nitrogen-oxygen separation membrane 36 and an adapter plate 7 are provided at the opening 28. The adapter plate 7 is located on a side of the nitrogen-oxygen separation membrane 36 away from the storage chamber 20. The exhaust end of the exhaust pipeline of the exhaust device is located between the nitrogen-oxygen separation membrane 36 and the adapter plate 7, so as to extract the oxygen attached to the nitrogen-oxygen separation membrane 36 in a targeted manner.

[0298] In the above embodiments, when the vacuum pump 32 is working, the ventilation unit is first opened for a period of time (preset vacuuming time) to perform oxygen reduction at normal pressure; a low oxygen environment is formed after the vacuum pump 32 has worked for a period of time; then the vacuum pump 32 is kept working and the ventilation unit is closed to complete the vacuuming and preservation of the low-pressure storage device, forming a low-oxygen and low-pressure storage environment, so that the oxygen concentration in the storage chamber 20 is lower than the oxygen concentration in the low-pressure storage environment formed by simple vacuuming and depressurization, so as to effectively extend the preservation time.

[0299] Under the setting of the low oxygen and low pressure storage environment formed above, when the pressure value in the storage chamber 20 reaches the second pressure value due to slow gas leakage, the exhaust device is started to reduce the pressure in the storage chamber 20. At this time, only a simple vacuuming and pressure reduction operation is performed, and no oxygen reduction operation is performed.

[0300] When the door 3 of the low-pressure storage device is opened and then closed, the vacuum pump 32 operates to first open the ventilation unit to reduce oxygen, and then close the ventilation unit to reduce pressure and evacuate the air, so as to form a low-oxygen and low-pressure storage environment.

[0301] In some embodiments of the present application, at least one storage mode is set on the refrigerator operation interface for the user to select, and the at least one storage mode includes a normal pressure low oxygen mode, a low pressure mode, and a low oxygen low pressure mode. As described above, the storage chamber 20 is provided with a modified atmosphere membrane assembly.

[0302] When the normal pressure hypoxia mode is selected, the ventilation unit is opened, the storage chamber 20 is connected to the outside, and the vacuum pump 32 works to reduce the oxygen content in the storage chamber 20 to form a hypoxic storage environment.

[0303] When the low-pressure mode is selected, the ventilation unit is closed, the storage chamber 20 is disconnected from the external environment, the vacuum pump 32 is operated, and the air pressure in the low-pressure storage unit is reduced to form a low-pressure storage environment.

[0304] When the low oxygen and low pressure mode is selected, the door body 3 is closed, the ventilation unit is opened, and the storage chamber 20 is connected to the external environment. When the vacuum pump 32 exhausts air for a preset exhaust time, a low oxygen environment is formed in the storage chamber 20; at this time, the ventilation unit is closed, the storage chamber 20 is disconnected from the external environment, the vacuum pump 32 continues to work, and the air pressure in the low pressure storage unit is reduced, and finally a low oxygen and low pressure storage environment is formed.

[0305] The above different modes (low oxygen mode, low pressure mode, low pressure low oxygen mode) are suitable for the preservation requirements of different foods, so as to provide a targeted preservation environment, improve the preservation effect, and extend the preservation time.

[0306] For example, for fruits and vegetables, especially those with large transpiration area (leafy vegetables, such as spinach) and relatively high humidity (fruits, such as cherries, mulberries, etc.), under low pressure, due to the large evaporation area, fruits and vegetables are prone to transpiration loss and cannot achieve the ideal preservation effect. In order to reduce transpiration loss, it is suitable for normal pressure and low oxygen mode to reduce its respiration, preserve nutrients, reduce transpiration loss, and improve freshness.

[0307] For dry food (such as dried fruit, tea, grains), there is no problem of volatile water. Oxygen concentration can usually only be reduced to C at normal pressure to preserve freshness. 2 , it cannot be further reduced and is prone to spoilage. It is suitable for low oxygen and low pressure mode. It is stored in a low oxygen and low pressure environment to reduce its respiration, preserve nutrients and extend the shelf life.

[0308] For foods with normal humidity (such as potatoes, sweet potatoes and other root foods), their transpiration water loss is normal and they can be stored in low pressure mode.

[0309] In some embodiments of the present application, a food identification device is provided on the refrigerator, and food is selected and placed into the low-pressure storage device through a user operation interface.

[0310] In some embodiments of the present application, the food identification device is disposed on the cabinet door 11 .

[0311] In some embodiments of the present application, RFID technology is used, and a label storing information about the food is provided on the food; the food identification device identifies the label to obtain the information in the label on the food. According to the type of food stored in the low-pressure storage device, the applicable storage mode is automatically determined, such as normal pressure and low oxygen mode, low pressure mode, and low oxygen and low pressure mode.

[0312] The food identification device may be provided with a scanning device to obtain information in the label on the food when scanning the food. The food information stored in the label may include food name, type (such as high humidity, dryness, medium humidity, etc.), quantity (such as weight, quantity) and other information.

[0313] In some embodiments of the present application, the food identification device adopts a technical solution of image acquisition and fuzzy comparison to confirm the type of food. The food identification device collects images of the food and sends them to the controller. The controller compares the images, sizes and other relevant information in the internally stored food database to obtain the name, type and quantity of the food, and automatically determines the applicable storage mode.

[0314] In some embodiments of the present application, when mixed ingredients are placed, the storage mode is selected by judging the type and quantity of the ingredients. For example, when the number of leafy vegetables is larger, the normal pressure and low oxygen mode is selected for preservation; when the number of root vegetables is larger, the low pressure preservation mode is selected; and when the number of dry ingredients is larger, the low oxygen and low pressure mode is selected.

[0315] In some embodiments of the present application, the refrigerator is provided with an operation button for selecting a vacuum pickling mode.

[0316] In some embodiments of the present application, when the vacuum pickling mode is selected, the door 3 is closed and the vacuum pump 32 is operated to make the pressure in the storage chamber 20 reach a first pressure value and maintain the current first pressure value for a first time period. Under the above low-pressure environment, the intracellular pressure of the food with seasoning is greater than the pressure of the storage chamber 20 in which it is located.

[0317] When the pressure in the storage chamber 20 maintains the current first pressure value for a first time period, the ventilation unit is opened, the storage chamber 20 is connected to the outside, the pressure in the storage chamber 20 reaches a second pressure value, the ventilation unit is closed, and the second pressure value is maintained for a second time period. Under the above second pressure value, compared with the first pressure value, the difference between the intracellular pressure of the food with seasoning and the pressure of the storage chamber 20 in which it is located becomes smaller. Among them, the second pressure value> the first pressure value.

[0318] When the second pressure value is maintained in the storage chamber 20 for a second time period, the ventilation unit is in a closed state, the storage chamber 20 is disconnected from the outside, and the vacuum pump 32 works to make the pressure in the storage chamber 20 reach the first pressure value; and when the pressure in the storage chamber 20 maintains the current first pressure value for a first time period, the ventilation unit is opened again. The first pressure value is maintained for a first time period, and the second pressure value is maintained for a first normal pressure time period in a cycle, so that the food placed in the storage chamber 20 is pickled.

[0319] As described above, in the environment of the first pressure value, the pressure difference between the intracellular pressure and the storage chamber 20 in which the cell is located increases, while in the environment of the second pressure value, the pressure difference between the intracellular pressure and the storage chamber 20 in which the cell is located decreases. In this way, the pressure changes between the two pressure differences, thereby accelerating the rupture rate of the cell wall, thereby accelerating the entry of external substances (seasonings) into the cell and increasing the speed of flavor absorption.

[0320] As a configurable manner, the first pressure value is set to any value between 0.7 atm and 0.8 atm, and the second pressure value is set to any value between 0.9 atm and 1 atm.

[0321] As a configurable method, after the electronic ventilation unit 31 is ventilated, the air pressure in the low-pressure storage unit increases; when the second pressure value is 1atm normal pressure, the ventilation unit remains in an open state; when the second pressure value is maintained in the storage chamber 20 for a second period of time, the ventilation unit is opened again and the vacuum pump 32 works.

[0322] As a configurable manner, after the electronic ventilation unit 31 is ventilated, the air pressure in the low-pressure storage unit increases; the low-pressure storage unit maintains a slightly negative pressure state, that is, the second pressure value is greater than the first pressure value and less than the normal pressure. The second pressure value can be set to 0.9atm.

[0323] The second pressure value can be set to be the value of vacuuming that can be detected by the pressure monitoring unit during normal vacuuming. The above setting ensures that there is a pressure difference between the low-pressure storage unit and the external air pressure, so that the door 3 and the shell 2 of the drawer unit are always in a compressed state, and the sealing element 4 remains in a compressed state, thereby improving the vacuuming efficiency.

[0324] In some embodiments of the present application, the refrigerator is provided with an operation button for selecting a vacuum fermentation mode.

[0325] In some embodiments of the present application, when the vacuum fermentation mode is selected, a low oxygen environment is formed in the storage chamber 20, and the anaerobic respiration of anaerobic bacteria (such as lactic acid bacteria) is used for fermentation. For example, when the anaerobic bacteria are lactic acid bacteria, the incomplete oxidation product after oxidation is lactic acid, which is used for lactic acid fermentation.

[0326] In some embodiments of the present application, a modified atmosphere membrane assembly is provided in the storage chamber 20. When the vacuum fermentation mode is selected, oxygen reduction is first performed at normal pressure. Specifically, the ventilation unit is opened, the storage chamber 20 is connected to the outside, and the vacuum pump 32 is turned off when the preset oxygen reduction time is reached to reduce the oxygen content in the storage chamber 20, thereby forming a low oxygen storage environment (the oxygen content in the storage chamber 20 is reduced to C 2 ). The specific oxygen reduction process and settings are the same as the above-mentioned normal pressure oxygen reduction, which will not be repeated here. The oxygen reduction time can be set to any value between 30 minutes and 60 minutes.

[0327] When the vacuum pump 32 works for the preset oxygen reduction time, the ventilation unit is closed, the storage chamber 20 is disconnected from the outside, the vacuum pump 32 keeps working, and the vacuum pump stops working when the pressure in the storage chamber 20 drops to the first pressure value. At this time, the pressure in the storage chamber 20 drops, and the oxygen concentration further decreases; the oxygen concentration is C 2 Reduce to C 3 (C 3 <C 2 ). The first pressure value can be set to 0.6atm to form a low-pressure and low-oxygen environment.

[0328] In some embodiments of the present application, when the pressure value in the storage chamber 20 reaches the second pressure value due to the slow leakage, the oxygen content of the gas entering the storage chamber 20 due to the leakage is C 0 , the oxygen content in the storage chamber 20 increases to C 2 The oxygen content at this time is the oxygen content after atmospheric pressure oxygen reduction, and atmospheric pressure oxygen reduction is not required. The vacuum pump 32 is directly started, and the vacuum pump 32 works to reduce the pressure in the storage chamber 20, so that the pressure in the storage chamber 20 is reduced to the first pressure value, and the oxygen content is reduced at the same time.

[0329] The second pressure value can be set to 0.9 atm. During the process of the pressure in the storage chamber 20 rising from the first pressure value to the second pressure value, the oxygen content of the gas entering the storage chamber 20 is C 0 .

[0330] In some embodiments of the present application, when the pressure value in the storage chamber 20 reaches the second pressure value due to the slow leakage, the oxygen content of the gas entering the storage chamber 20 due to the leakage is C 0 , the oxygen content in the storage chamber 20 increases. At this time, the ventilation unit is opened, and the vacuum pump 32 is started to perform normal pressure oxygen first; when the vacuum pump 32 working time reaches the oxygen reduction time, the ventilation unit is closed, and the vacuum pump 32 keeps working to reduce the pressure in the storage chamber 20, so that the pressure in the storage chamber 20 is reduced to the first pressure value, and the oxygen content is reduced at the same time.

[0331] In some embodiments of the present application, when the vacuum fermentation mode is started, the low-pressure storage device does not perform refrigeration, so that the fermentation is performed in a relatively high temperature and low-oxygen environment, thereby improving the fermentation efficiency.

[0332] In some embodiments of the present application, the low-pressure storage device is provided with a heating device. When the vacuum fermentation mode is started, the heating device works, the temperature in the storage chamber 20 rises, and the anaerobic respiration efficiency of anaerobic bacteria is increased in a low-oxygen environment.

[0333] like Figure 28-Figure 34 As shown, the setting of the power supply device of the low-voltage storage device.

[0334] Specifically, the wires of the current power supply device are directly installed in the wire fixing part, and the setting of the wire fixing part leads to low sealing of the low-pressure storage device, which makes it easy for external gas to enter the low-pressure storage device through the wire fixing part, resulting in the low-pressure state of the low-pressure storage device cannot be maintained for a long time. If the power supply device is placed as a whole inside the low-pressure storage device, on the one hand, it will affect the storage space inside the storage device, and on the other hand, it will breed bacteria inside, increasing the difficulty of sterilization.

[0335] At the same time, the low-pressure storage device is a sealed environment, which is easy to breed bacteria. In order to maintain the cleanliness of the low-pressure storage device, it is necessary to sterilize its internal environment. In addition, the low-pressure storage device is a sealed environment. When placing odorous food, the odor cannot dissipate, resulting in a high odor concentration. It is necessary to purify the odor to form a clean and odorless storage space.

[0336] In some embodiments of the present application, the low-pressure storage device includes a shell 2 that defines a storage chamber 20 and has a storage port 21, a storage container 14 that can be pushed into or pulled out of the storage chamber 20 defined by the shell 2, and a door body 3 fixedly connected to the storage container 14.

[0337] The housing 2 includes a top and a bottom that are arranged opposite to each other and a rear wall that is arranged opposite to the storage opening. When the storage container 14 is pushed into the storage chamber 20, the door body 3 closes the storage opening 21. The door body 3 and the storage container 14 together constitute a drawer unit that can be pushed into and pulled out of the housing 2.

[0338] The refrigerator is provided with a low-pressure storage device which can be maintained in a low-pressure state and an exhaust device which is used for extracting gas from the low-pressure storage device so as to form a low-pressure state in the inner cavity of the low-pressure storage device.

[0339] In some embodiments of the present application, the air extraction device includes a vacuum pump 32 and a pipeline connected between the vacuum pump 32 and the low-pressure storage device.

[0340] When the vacuum device is working, the vacuum pump 32 is started to extract the gas in the low-pressure storage device, thereby reducing the pressure in the low-pressure storage device to below the standard atmospheric pressure, forming a vacuum storage environment.

[0341] In some embodiments of the present application, the low-voltage storage device has electrically connected electrical components inside and outside. For example, a first electrical component is disposed inside the storage chamber, and a second electrical component is disposed outside the storage chamber. The first electrical component and the second electrical component are electrically connected using an electrical device.

[0342] It can be known that the electrical connection here can be understood as a form of connection between different components in the circuit structure through physical lines such as PCB copper foil or wires that can transmit electrical signals.

[0343] It should be noted that the above-mentioned first electrical component and second electrical component are only for illustration, and the technical solution in the present application may have more than the above two electrical components, and the position and quantity of the electrical components can be set according to requirements.

[0344] In some embodiments of the present application, the physical line between the first electrical component and the second electrical component passes through the through hole provided on the housing 2 to achieve electrical connection between the electrical components inside and outside the housing 2. It can be known that the position of the through hole can be opened according to the setting position of the electrical component and the layout between the components.

[0345] As a configurable manner, the first electrical component is configured as a PCB board, and the conductive structure 6 can be connected to a power supply interface of the PCB board.

[0346] After the conductive structure 6, the mounting structure 65 and the sealing structure 64 are assembled, the abutting portion 652 abuts against the fixing plate 63, and the sealing structure 64 generates a first contraction distance, so that the sealing structure 64 is tightly installed between the fixing plate 63 and the housing 2;

[0347] When the vacuum device vacuums the storage chamber, the air pressure in the storage chamber is lower than the external atmospheric pressure. The conductive structure 6 is squeezed toward the sealing structure 64 under the action of the internal and external pressure difference, and the sealing structure 64 is compressed again.

[0348] In some embodiments of the present application, the energizing device includes a conductive structure 6 .

[0349] In some embodiments of the present application, the power supply device includes a sealing structure 64. The sealing structure 64 is disposed on a side of the conductive structure 6 close to the inside of the housing 2.

[0350] The conductive structure 6 moves toward the direction close to the inside of the storage device and squeezes the sealing structure 64 to press the conductive structure 6 and the sealing structure 64 against the through hole of the shell 2. The sealing structure 64 will produce a first contraction displacement x1 compared to the natural state, forming a preliminary seal at the connection between the sealing structure 64 and the shell 2.

[0351] Some embodiments of the present application include a mounting structure 65. The mounting structure 65 is disposed on a side of the conductive structure 6 away from the interior of the housing 2. The mounting structure 65 can apply a force toward the interior of the housing 2 to the conductive structure 6.

[0352] The sealing structure 64 and the conductive structure 6 form a cavity communicating with the interior of the housing 2 .

[0353] When the vacuum pump 32 is working, the pressure in the storage chamber decreases. Because the cavity composed of the sealing structure 64 and the conductive structure 6 is connected to the storage chamber, the pressure on the side of the sealing structure 64 close to the housing 2 is less than the external pressure on the side away from the housing 2. The sealing structure 64 is further moved closer to the housing 2 by the pressure difference between the side away from the housing 2 and the side close to the storage chamber. The sealing structure 64 generates a second displacement x2 to further seal the connection between the conductive structure 6 and the housing 2 to effectively ensure the sealing. It can be seen that the second displacement x2 is less than the first displacement x1.

[0354] In order to facilitate the description of the deformation process of the above sealing structure 64, refer to Figure 42-46 Assume that the thickness of the sealing structure 64 in the natural state is a, the thickness of the sealing structure 64 in the assembled state is b, and the thickness of the sealing structure 64 in the vacuumed state is c, wherein ab=x1, bc=x2.

[0355] As can be seen from the above, in the present application, the initial sealing is first performed by the initial compression of the sealing structure 64, and then the pressure difference generated by the vacuum is used to compress the sealing structure 64 for a second time for secondary sealing, thereby achieving a tight seal at the joint between the conductive structure 6 and the storage chamber.

[0356] After the conductive structure 6, the power supply structure and the mounting structure 65 are assembled, the abutting portion 652 abuts against the fixing plate 63, and the edge of the through hole, the sealing structure 64, the fixing plate 63 and the conductive portion form a closed space;

[0357] When the vacuum device performs the vacuuming action, the air pressure in the storage chamber is lower than the external atmospheric pressure, and the conductive structure 6 is pressed toward the sealing structure 64 under the action of the internal and external pressure difference to squeeze the closed space.

[0358] In some embodiments of the present application, the energizing device includes a conductive structure 6 .

[0359] In some embodiments of the present application, the power supply device includes a sealing structure 64. The sealing structure 64 is disposed on a side of the conductive structure 6 close to the inside of the housing 2.

[0360] The conductive structure 6 moves toward the direction close to the interior of the storage device and squeezes the sealing structure 64 to press the conductive structure 6 and the sealing structure 64 against the through hole of the shell 2. The closed space connected to the storage chamber composed of the edge of the through hole, the sealing structure 64 and the conductive structure 6 will reduce the internal space by a first contraction volume due to the compression of the sealing structure 64, thereby forming a preliminary seal at the connection between the sealing structure 64 and the shell 2.

[0361] Some embodiments of the present application include a mounting structure 65. The mounting structure 65 is disposed on a side of the conductive structure 6 away from the interior of the housing 2. The mounting structure 65 can apply a force toward the interior of the housing 2 to the conductive structure 6.

[0362] The sealing structure 64 and the conductive structure 6 form a closed space communicating with the interior of the housing 2 .

[0363] When the vacuum pump 32 is working, the pressure in the storage chamber decreases. Since the closed space composed of the sealing structure 64 and the conductive structure 6 is connected to the storage chamber, the pressure on the side of the sealing structure 64 close to the housing 2 is less than the external pressure on the side away from the housing 2. The sealing structure 64 is further moved closer to the housing 2 by the pressure difference between the side away from the housing 2 and the side close to the storage chamber, so that the space of the above-mentioned closed space is further compressed and the second contraction volume is reduced, so as to further seal the connection between the conductive structure 6 and the housing 2, so as to effectively ensure the sealing. It can be known that the second contraction volume is less than the first contraction volume.

[0364] In some embodiments of the present application, one side of the conductive structure 6 extends into the storage chamber and is connected to the electrical components in the storage chamber, and the other side of the conductive structure 6 is located outside the shell 2 and is connected to the electrical components that can supply power to the internal electrical components.

[0365] As a configurable manner, one end of the wire can form a circular closed structure or an arc-like semi-closed structure, and then be sleeved on one side of the conductive structure 6 to achieve a stable connection between the wire and the conductive structure 6.

[0366] As a configurable manner, one end of the wire can be pressed against one side of the conductive structure 6 by an external structure to achieve a stable connection between the wire and the conductive structure 6 .

[0367] The external structure is set to an insulating material, and one end of the wire can be pressed onto the conductive structure 6 to achieve the transmission of electrical energy or electrical signals.

[0368] In some embodiments of the present application, the conductive structure 6 is used to achieve electrical connection between the first electrical device and the second electrical device.

[0369] In some embodiments, the conductive structure 6 further includes a conductive portion. Part of the conductive portion enters the storage device through the through hole, and part is placed outside the storage device. The part placed inside the storage device is connected to the first electrical device, and the part placed outside the storage device is connected to the second electrical device.

[0370] In some embodiments, the conductive structure 6 includes a conductive portion and a fixing plate 63. The fixing plate 63 is disposed on the periphery of the conductive portion and is placed outside the storage device. After assembly, the fixing plate 63 is clamped on the outside of the storage device so that the conductive structure 6 partially enters the storage device and partially is placed outside the storage device, so that the conductive structure 6 can be installed at the through hole, and the pre-tightening force applied by the mounting structure 65 is used to prevent the conductive structure 6 from falling out of the through hole.

[0371] In the technical solution of this embodiment, a sealing structure 64 is provided at the joint between the conductive structure 6 and the housing 2, so that the conductive structure 6 is sealed and connected to the housing 2. The pre-tightening force of the mounting structure 65 is used for pre-sealing, and the pressure difference between the inside and the outside generated by the exhaust device further compresses the sealing structure 64, thereby ensuring effective sealing of the joint between the conductive structure 6 and the housing 2.

[0372] The above-mentioned energized sealing scheme realizes energizing under the premise of ensuring sealing inside the low-pressure storage device or the low-oxygen storage device. Energized parts such as temperature sensors, humidity sensors and ion modules can be installed inside the low-oxygen storage device or the low-pressure storage device to achieve precise control of the temperature and humidity inside the drawer unit. At the same time, the dielectric ion module can be used for sterilization, which improves the sterilization effect and ensures the freshness preservation effect inside the drawer unit.

[0373] In some embodiments of the present application, the conductive portion and the fixing plate 63 may be integrally formed to reduce production difficulty and improve efficiency during processing.

[0374] Of course, in some embodiments, the conductive part and the fixed plate 63 can be set as a split structure, and the fixed plate 63 is sleeved on the conductive part. The friction between the fixed plate 63 and the conductive part is used to ensure that the fixed plate 63 and the conductive part are relatively still during the process of the fixed plate 63 squeezing the sealing structure 64, thereby ensuring the position stability between the various components.

[0375] The material of the conductive structure 6 can be set to conductive materials such as conductive plastic, conductive rubber, etc.

[0376] The diameter of the conductive part is smaller than the diameter of the through hole, so that the conductive part can pass through the through hole into the storage chamber. For example, the diameter of the through hole is 0.2 mm-1 mm larger than the maximum diameter of the conductive part, so that the gap is not too large to increase the difficulty of sealing while satisfying the passage of the conductive part. In some embodiments, the diameter of the through hole is 0.4 mm larger than the diameter of the conductive part.

[0377] In some embodiments of the present application, the diameter of the edge of the conductive part is smaller than the diameter of other positions, and the conductive part has an overall smooth transition, which facilitates the installation of the conductive part.

[0378] The diameter of the fixing plate 63 is larger than the diameter of the conductive part. The conductive part can be installed by using the fixing plate 63. The ratio of the diameter of the fixing plate 63 to the diameter of the conductive part is r, and 1.5<r<3. The fixing plate 63 is provided to provide sufficient installation positions for the conductive structure 6, and at the same time, to provide pressure that can compress the sealing structure 64 during the exhaust process.

[0379] The thickness of the fixing plate 63 is greater than 1.5 mm. For example, the thickness of the fixing plate 63 can be set to 1.8 mm. Of course, the thickness of the fixing plate 63 can also be set to other thicknesses such as 2 mm to meet the installation requirements of the conductive structure 6.

[0380] In some embodiments, the sealing structure 64 may be specifically configured as a sealing ring, and the above technical solution regarding the sealing structure 64 is applicable to the sealing ring.

[0381] The thickness of the sealing ring is greater than 2 mm. Taking into account the sealing ring's own weight and the difficulty of compressing the sealing ring itself, the sealing ring can achieve self-compression during the vacuum process to meet the requirement of secondary sealing by compressing the sealing ring in this application.

[0382] Of course, the thickness of the sealing ring can be set to 3mm, 3.5mm, etc. Increasing the thickness of the sealing ring as appropriate can reduce the difficulty of deformation of the sealing ring during pre-sealing and vacuum sealing, so that the sealing ring can deform more under the same pressure difference and achieve a better sealing effect.

[0383] In some embodiments of the present application, the sealing structure 64 is installed on the periphery of the conductive structure 6, and the radius of the inner circle of the conductive structure 6 is 2-5 mm larger than the radius of the outer circle of the sealing structure 64. The gap between the sealing structure 64 and the conductive structure 6 facilitates the expansion and contraction displacement of the sealing structure 64 when the vacuum pump 32 is working, so as to tighten the seal between the sealing structure 64, the conductive structure 6 and the shell 2.

[0384] In some embodiments of the present application, Figure 28-Figure 31 As shown, the conductive structure 6 includes a first conductive portion 61 and a second conductive portion 62. The first conductive portion 61 extends into the storage chamber 20, and the second conductive portion 62 is located outside the housing 2 and connected to the second electrical device to supply power to the first electrical device.

[0385] In some embodiments, the first electrical device is configured as a sterilization module, and the second electrical device is configured as a power source, and the power source is used to power the sterilization module via the conductive structure 6 .

[0386] The refrigerator also includes a first wire, one end of which is connected to the first electrical device, and the other end of which is sleeved on the first conductive part.

[0387] The refrigerator also includes a second wire, one end of which is connected to the second electrical device, and the other end of which is sleeved on the second conductive part.

[0388] In some embodiments, the length of the first conductive portion is longer than that of the second conductive portion. Exemplarily, the ratio of the first conductive portion to the second conductive portion is 4:3 to meet the wiring requirements of electrical devices inside and outside the storage room and the installation requirements of the conductive structure 6 itself.

[0389] It can be known that the ratio of the length of the first conductive portion to the length of the second conductive portion can also be set to 1:1, 2:1, etc., as long as it can meet normal conductivity requirements.

[0390] The sealing structure 64 is disposed at the matching position between the conductive structure 6 and the housing 2 so as to seal the conductive structure 6 and the housing 2. The side of the sealing structure 64 close to the housing 2 is in communication with the storage chamber 20.

[0391] In some embodiments of the present application, the vacuum pump 32 is working and the pressure in the storage chamber 20 is reduced. Since the side of the sealing structure 64 close to the shell 2 is connected to the storage chamber 20, the pressure on the side of the sealing structure 64 close to the shell 2 is less than the external pressure on the side away from the shell 2. The sealing structure 64 is further moved closer to the shell 2 by the pressure difference between the side away from the shell 2 and the side close to the storage chamber 20, thereby further sealing the connection between the conductive structure 6 and the shell 2 to effectively ensure the sealing.

[0392] In addition, when vacuuming, the sealing structure 64 is acted upon by the pressure difference between the side away from the housing 2 and the side close to the storage chamber 20, and the sealing structure 64 is further moved closer to the housing 2, further sealing the connection between the conductive structure 6 and the housing 2. At the same time, under the pressure difference between the side away from the housing 2 and the side close to the storage chamber 20, the sealing structure 64 shrinks at the through hole through which the conductive structure 6 passes, further increasing the sealing fit between the sealing structure 64 and the conductive structure 6, and effectively enhancing the sealing of the connection between the conductive structure 6, the sealing structure 64 and the housing 2.

[0393] The shell 2 is provided with a through hole, and a conductive structure 6 is installed in the through hole. The number of the through holes and the conductive structure 6 can be set according to the conductive needs. Exemplarily, two through holes can be opened in the shell 2.

[0394] Specifically, the housing 2 is provided with a first through hole 26 and a second through hole 27; the first through hole 26 and the second through hole 27 are both provided with a conductive structure 6. The conductive structure 6 installed in the first through hole 26 is connected to the positive electrode of the power supply, and the conductive structure 6 installed in the second through hole 27 is connected to the negative electrode of the power supply.

[0395] In some embodiments of the present application, reference Fig.31 A accommodating cavity is provided at the through hole for passing the conductive structure 6, and the accommodating cavity is provided on a side of the through hole away from the shell 2, and the accommodating cavity is provided as a groove recessed into the inside of the shell 2; wherein the diameter of the accommodating cavity is greater than the diameter of the through hole.

[0396] Part of the conductive structure 6, sealing structure 64 and mounting structure 65 of the power-on device are installed in the accommodating cavity to avoid the installation space of the power-on device from squeezing the space between the storage device and the refrigerator body. A reasonable layout is achieved to improve the overall space utilization inside the refrigerator.

[0397] At the same time, parts of the conductive structure 6, the sealing structure 64 and the mounting structure 65 are arranged in the accommodating cavity, which avoids the situation where parts fall off during installation or use, reduces the difficulty of installation, and is conducive to the conductive structure 6 and the sealing structure 64 to form a sealing structure 64, thereby improving the sealing effect of the storage chamber.

[0398] In some embodiments of the present application, the two sides of the through hole are flush with the surface of the housing 2 or slightly protrude from the surface of the housing 2, and the power supply device is also protruded from the housing 2 (not shown in the figure). That is, the conductive structure 6, the sealing structure 64 and the mounting structure 65 are arranged to protrude from the outer surface of the housing 2. At this time, the conductive structure 6 and the sealing structure 64 are installed by the mounting structure 65 and the pre-tightening force applied by the mounting structure 65, and the sealing structure 64, the conductive structure 6 and the through hole form a closed cavity connected to the inside of the storage chamber, so as to achieve the initial sealing of the storage chamber.

[0399] When the vacuum device is vacuuming, the pressure difference between the inside and outside of the storage chamber is used to further compress the conductive structure 6 and the sealing structure 64, thereby improving the overall sealing effect of the storage chamber.

[0400] It should be noted that when the power-carrying device is installed protruding from the surface of the shell 2, the structure of the mounting structure 65 and the connection structure between the mounting structure 65 and the shell 2 need to be partially adjusted. For example, the length of the connection structure between the mounting structure 65 and the shell 2 is extended (exemplarily, the length of the screw) to meet the requirement that the mounting structure 65 provides sealing and pre-tightening force for the conductive structure 6 and the sealing structure 64.

[0401] The conductive structure 6 includes a columnar structure for conducting electricity.

[0402] The conductive structure 6 includes a columnar structure for conducting electricity and an annular structure for installation. Specifically, the conductive structure 6 includes a fixing plate 63 and a conductive part.

[0403] The conductive portion includes a first conductive portion 61 and a second conductive portion 62 . The first conductive portion 61 and the second conductive portion 62 of the conductive structure 6 are located at two opposite sides of the fixing plate 63 .

[0404] The sealing structure 64 is located between the fixing plate 63 and the housing 2 , and the sealing structure 64 is sealingly sleeved on the first conductive portion 61 , so that the conductive structure 6 is sealedly connected to the housing 2 .

[0405] By arranging a fixing plate 63 on the periphery of the conductive part, it is possible to prevent the conductive part from being entirely immersed in the storage chamber, thereby facilitating the installation and fixing of the conductive structure 6 .

[0406] A mounting structure 65 is mounted on a side of the fixing plate 63 away from the housing 2 .

[0407] In some embodiments of the present application, the mounting structure 65 includes a pressing plate 653. The pressing plate 653 is sleeved on the second conductive portion 62 and matched with the fixing plate 63 of the conductive structure 6.

[0408] In some embodiments of the present application, refer to Fig.40 The mounting structure 65 includes a pressing plate 653 and a connecting plate 654 for being fixedly connected to the housing 2. The connecting plate 654 of the mounting structure 65 is located at the periphery of the pressing plate 653 away from the second conductive portion 62 and is fixedly connected to the housing 2.

[0409] After the connection plate 654 of the mounting structure 65 is fixedly connected to the housing 2, the distance between the pressure plate 653 and the housing 2 is less than the sum of the thickness of the fixed plate 63 and the sealing element 4 in the natural state. That is, the mounting structure 65 is fixedly connected to the housing 2, and its pressure plate 653 presses against the fixed plate 63, and squeezes the sealing structure 64 through the fixed plate 63 and the housing 2, so that the sealing structure 64 is sealed and connected with the fixed plate 63 and the housing 2, providing a pre-tightening force on the sealing structure 64 to form a pre-seal, improve the reliability of the seal, and reduce the possibility of air leakage during vacuuming. The sealing structure 64 is further sealed with the relative pressure difference between the two during vacuuming to ensure efficient sealing.

[0410] In some embodiments of the present application, the thickness of the pressure plate 653 is set to be greater than 1.5 mm, so as to apply force to the conductive structure 6 and to better apply force to the sealing structure 64 to seal the storage chamber.

[0411] In some embodiments of the present application, the power supply device includes a conductive structure 6, which is used to connect electrical devices inside and outside the storage chamber. The conductive structure 6 itself has conductivity.

[0412] The power supply device includes a sealing structure 64, which is arranged at the wiring port or the through hole to achieve sealing of the wiring port or the through hole.

[0413] The power supply device includes a conductive structure 6 and a sealing structure 64 . The sealing structure 64 is arranged on a side of the conductive structure 6 close to the inside of the housing 2 .

[0414] The power supply device includes a mounting structure 65, which is mounted on the housing 2 and is used to provide mounting force or pre-tightening force. The mounting force refers to the force used to install and fix the power supply device as a whole, and the pre-tightening force refers to the force used for initial sealing after the power supply device is installed.

[0415] As a configurable method, the fixing plate 63 on the conductive structure 6 is planar, and the pressing plate 653 of the mounting structure 65 is planar; the fixing plate 63 is in planar contact with the pressing plate 653, which increases the interaction area and ensures the sealing effect of the pre-seal.

[0416] As a configurable manner, the connecting plate 654 is fixedly connected to the housing 2 by means of screws.

[0417] As a configurable method, screw columns are arranged around the first through hole 26 or the second through hole 27 on the shell 2, and screw holes are arranged on the connecting plate 654 on the mounting structure 65. The screws pass through the screw holes on the connecting plate 654 and cooperate with the screw columns on the shell 2 to fix the mounting structure 65 to the shell 2.

[0418] In some embodiments of the present application, the mounting structure 65 includes an abutment portion 652. The abutment portion 652 is pressed on the fixing plate 63 of the conductive structure 6 and matched therewith.

[0419] In some embodiments of the present application, reference Fig.41 The mounting structure 65 includes a mounting portion 651 and an abutting portion 652 for connecting with the housing 2. The abutting portion 652 is pressed on the fixing plate 63 of the conductive structure 6 and matched therewith.

[0420] The mounting portion 651 is connected to the housing 2 via a connecting piece.

[0421] The mounting portion 651 is connected to the housing 2 via screws, and the screws pass through the mounting portion 651 and are fixed on the housing 2 .

[0422] The abutment portion 652 is disposed on the end surface of the mounting portion 651 close to the fixing plate 63 and protrudes from the end surface. The abutment portion 652 abuts against the end surface of the fixing portion away from the sealing structure 64 to apply a force toward the inside of the storage chamber to the fixing plate 63.

[0423] After the mounting portion 651 of the mounting structure 65 is fixedly connected to the housing 2 , the distance between the end surface of the abutting portion 652 close to the fixing plate 63 and the housing 2 is smaller than the sum of the thicknesses of the fixing plate 63 and the sealing structure 64 in the natural state.

[0424] That is, the mounting portion 651 is fixedly connected to the housing 2, and its abutting portion 652 is pressed toward the fixing plate 63, and the sealing structure 64 is squeezed through the fixing plate 63 and the housing 2, so that the sealing structure 64 is sealed and connected with the fixing plate 63 and the housing 2. The abutting portion 652 can provide a pre-tightening force on the sealing structure 64 to form a pre-seal, improve the reliability of the seal, and reduce the possibility of air leakage during and after vacuuming. The above structure cooperates with the pressure difference between the inside and outside of the sealing structure 64 during vacuuming to further seal and ensure efficient sealing.

[0425] As a configurable manner, the fixing plate 63 on the conductive structure 6 is planar, the abutment portion 652 of the mounting structure 65 is planar, and the fixing plate 63 is in planar contact with the abutment portion 652, thereby increasing the interaction area and ensuring the sealing effect of the pre-seal.

[0426] As a configurable method, a recessed structure is provided on the fixing plate 63 of the conductive structure 6, and the abutment portion 652 of the mounting structure 65 is provided as a matching tip structure. The abutment portion 652 is in interference contact with the abutment portion 652, thereby ensuring the stability of the interaction between the fixing plate 63 and the abutment portion 652.

[0427] As a configurable manner, the mounting portion 651 is fixedly connected to the housing 2 by means of screws.

[0428] As a method that can be set, screw columns are arranged around the first through hole 26 or the second through hole 27 on the shell 2, and screw holes are provided on the mounting portion 651 of the mounting structure 65. The screws pass through the screw holes on the mounting portion 651 and cooperate with the screw columns on the shell 2 to fix the mounting structure 65 to the shell 2.

[0429] It is known that the mounting structure 65 can also be set as other mechanical structures. As long as the structure can provide the conductive structure 6 and the sealing structure 64 with the force required for installation and / or the pre-tightening force of pre-sealing, it is within the protection scope of this application.

[0430] In some embodiments of the present application, a housing 200 is formed on the housing 2, surrounding the first through hole 26 and the second through hole 27. A first protective cover 66 is installed on the side of the housing 200 away from the inner cavity of the storage chamber 20. The first protective cover 66 cooperates with the end of the housing 200 away from the inner cavity of the storage chamber 20 to form a first accommodating cavity, so as to protect the power-on device and prevent the power-on device from being damaged by moisture in the storage room.

[0431] In some embodiments of the present application, a sealing strip 67 is provided at the joint of the first protective cover 66 and the accommodating portion 200, so that the first protective cover 66 and the accommodating portion 200 are sealed and matched to form a sealed accommodating space, further reducing the impact of the environment in the storage room on the powered device.

[0432] The sealing arrangement of the above-mentioned power-on device utilizes the negative pressure effect of vacuum extraction to effectively ensure the sealing performance of the power-on device and the housing 2, and the sealing performance is not damaged by the installation of the power-on module.

[0433] In some embodiments of the present application, the first conductive portions 61 of the two conductive structures 6 are connected to lighting devices to illuminate the low-voltage storage device.

[0434] In some embodiments of the present application, refer to Fig.35The power supply device is arranged at the top of the housing 2 to connect the wired connection of the electrical components inside and outside the housing 2. When arranged at the top of the housing 2, the deadweight of the power supply device can be used to compress the sealing structure 64, thereby improving the sealing effect of the storage chamber.

[0435] Exemplarily, a through hole is provided at the top of the shell 2, the conductive structure 6 is vertically inserted into the through hole, and the sealing structure 64 is installed at the matching position between the conductive structure 6 and the through hole. The conductive structure 6 is pressed onto the sealing structure 64 by its own weight for sealing.

[0436] The mounting structure 65 is mounted on a side of the conductive structure 6 away from the sealing structure 64 . After the mounting structure 65 is installed in place, the sealing structure 64 is further compressed by the pre-tightening force applied by the mounting structure 65 to the conductive structure 6 to achieve pre-sealing.

[0437] During the vacuuming process of the vacuum device, the air pressure in the storage chamber decreases. Under the action of the external atmospheric pressure, the conductive structure 6 moves downward to squeeze the sealing structure 64, thereby improving the sealing effect of the sealing structure 64 on the through-hole position.

[0438] In some embodiments, the conductive structure 6 can also be inserted into the through hole at a certain angle. To match this, the through hole is configured as a corresponding hole obliquely placed at the top, and the cross-section of the sealing structure 64 is configured with a corresponding inclination angle so that it can be sleeved on the conductive structure 6 to achieve a tight and stable fit between the various components.

[0439] In some embodiments of the present application, reference Fig.28 The power supply device is arranged on the rear wall of the housing 2 to connect the electrical components inside and outside the housing 2 by wire.

[0440] The power supply device is arranged on the rear wall of the housing 2, which is convenient for the layout of the electrical components arranged inside the storage chamber, and can reduce the impact on the storage space in the storage chamber by extending the front and rear length of the storage chamber. At the same time, it is arranged on the rear wall of the housing 2, which is convenient for the maintenance and replacement of the electrical components.

[0441] In some embodiments of the present application, an opening 28 is provided on the shell 2, and the opening 28 is connected to the inside and outside of the shell 2. An adapter plate 7 is provided at the opening 28. The power-on device is installed on the adapter plate 7. The above arrangement enables the power-on device to be detachably connected to the shell 2, which is convenient for testing the power-on device and also for the installation of the power-on module. After the low-voltage storage device is powered on, a functional module (such as the ion generation module described later) is often installed. If there is no adapter plate 7, the function is difficult to install and test.

[0442] In some embodiments of the present application, reference Fig.28When the opening is set on the rear wall of the shell 2, the ratio of the opening area of ​​the installation position of the power supply device to the area of ​​the entire rear wall is less than 60%, so as to take into account the overall strength of the shell 2 and extend the service life of the shell 2.

[0443] As a configurable manner, the opening position is set at the center of the rear wall.

[0444] In some embodiments of the present application, when the opening is set at the top of the shell 2, the ratio of the opening area at the installation position of the power supply device to the area of ​​the entire top is less than 60% so as not to reduce the overall strength of the shell 2 due to excessive openings.

[0445] As a configurable method, the opening position is set at the center of the top. Of course, the opening position can also be set at a position closer to the center for consideration of the wiring layout.

[0446] In some embodiments of the present application, a receiving portion 70 is formed on one side of the adapter plate 7 close to the storage chamber 20 .

[0447] The receiving portion 70 is ring-shaped and surrounds the first circuit board 90 and the first through hole 26 and the second through hole 27 .

[0448] A second protective cover 16 is installed at one end of the receiving portion 70 away from the storage opening 21 .

[0449] The second protective cover 16 cooperates with the receiving portion 70 to define a second receiving cavity to protect the power-on device and the first circuit board 90 and prevent moisture in the storage chamber 20 from damaging the power-on device and the first circuit board 90 .

[0450] In some embodiments of the present application, a sealing strip 67 is provided at the joint of the second protective cover 16 and the receiving portion 200, so that the second protective cover 16 and the receiving portion 70 are sealed and matched to form a sealed receiving space, further reducing the impact of the environment in the storage chamber 20 on the power supply device and the first circuit board 90.

[0451] The above-mentioned accommodation portion 70 is arranged, on the one hand, to increase the sealing performance, reduce the possibility of air leakage caused by the installation of the power-on device, and does not destroy the sealing performance due to the installation of the power-on module; on the other hand, the power-on device and the first circuit board 90 are separated from the space in the storage chamber 20 and protected in the accommodation portion 70, so as to avoid the influence of the environment in the storage chamber 20 on the power-on device and the first circuit board 90, thereby avoiding damage to the power-on device and the first circuit board 90.

[0452] In some embodiments of the present application, the adapter plate 7 is sealed and connected to the housing 2 via a sealing ring.

[0453] In some embodiments of the present application, Figure 28-Figure 31 ,like Figure 31-Figure 34 As shown, an ion generating module is provided in the storage chamber 20. The ion generating module includes a first circuit board 90 and a discharge module 91. The first circuit board 90 is connected to two first conductive parts 61 of the power supply device located inside the storage chamber 20 to energize the discharge module 91, and discharges when energized to sterilize and deodorize the storage chamber 20.

[0454] The discharge module 91 is disposed separately from the first circuit board 90 to prevent ions released by the discharge module 91 from corroding the first circuit board 90 , thereby ensuring that the discharge module 91 can discharge effectively while protecting the first circuit board 90 .

[0455] Among them, the discharge module 91 has a first discharge mode and a second discharge mode. The first discharge mode of the discharge module 91 is mainly corona discharge, which produces a large amount of strong oxidizing active substances, including ozone, atomic oxygen, ground state oxygen, etc., mainly for deodorization and auxiliary sterilization. The second discharge mode is air discharge (sterilization), which mainly produces positive and negative ion groups for sterilization. That is, when the purpose is sterilization, the discharge module 91 discharges in the second discharge mode; when the purpose is to remove odor, the discharge module 91 discharges in the first discharge mode.

[0456] In some embodiments of the present application, the atmosphere-controlled membrane assembly is disposed on the housing 2 and is located at the position of the air extraction port of the storage chamber. It can be configured that an air cavity is disposed on the side of the air extraction port away from the storage chamber, and a nitrogen-oxygen separation membrane is disposed on the side of the air cavity close to the storage chamber to absorb oxygen in the storage chamber for extraction by the air extraction device, thereby reducing the oxygen concentration in the storage chamber to meet the low-oxygen storage requirements of some food materials.

[0457] At the same time, the oxygen concentration in the air cavity can be increased to form a high-oxygen environment in the air cavity to achieve the fermentation of some ingredients and other needs, which can enrich the diversity of food storage needs.

[0458] In some embodiments of the present application, refer to Fig.31 The exhaust port is arranged on the adapter plate 7 and is located adjacent to the power-on device. The exhaust port can be arranged on the side of the adapter plate 7, and a chamber is formed near the exhaust port. A nitrogen-oxygen separation membrane is arranged on one side of the chamber close to the storage chamber for the exhaust device to extract, thereby reducing the oxygen concentration in the storage chamber to meet the low-oxygen storage requirements of some food ingredients.

[0459] In some embodiments of the present application, another air extraction port may be provided on the air cavity to extract the high-concentration oxygen in the air cavity and release it to other storage spaces to increase the oxygen content in the storage space.

[0460] In some embodiments of the present application, Fig.33 As shown, the gas-controlled membrane assembly is arranged on the adapter plate 7 and is located adjacent to the ion generating module.

[0461] It can be arranged that a storage portion is formed on the adapter plate 7 at a position adjacent to the ion generating module, and a nitrogen-oxygen separation membrane 36 is provided in the storage portion to adsorb oxygen in the storage chamber 20 for extraction by the exhaust device, thereby reducing the oxygen concentration in the storage chamber 20 .

[0462] In some embodiments of the present application, when the vacuum pump 32 is working, the discharge module 91 is not working, so as to prevent the ions generated by the discharge module 91 from being drawn out by the vacuum pump 32, thereby reducing the sterilization and deodorization effects.

[0463] When the vacuum pump 32 is working, it is in a normal pressure oxygen reduction mode in one case, the oxygen content is reduced, and the gas in the storage chamber 20 is in a circulating flow state. At this time, the discharge module 91 does not work to avoid ineffective sterilization and reduce power consumption.

[0464] In another case, it is in oxygen reduction mode, the door body 3 is closed, the ventilation unit is closed, the vacuum pump 32 is working, the pressure in the storage chamber 20 is reduced, and the gas in the storage chamber 20 is in a state of being extracted outward, and the discharge module 91 does not work, avoiding ineffective sterilization and reducing power consumption.

[0465] In some embodiments of the present application, when the low-pressure storage device is opened and then closed, the ventilation unit is closed, the discharge module 91 is started, and continues to work for the first discharge duration. When the above discharge module 91 is working, the ventilation unit is closed, the storage chamber 20 is disconnected from the outside, and the discharge module 91 discharges the sealed storage chamber 20 to sterilize the gas therein.

[0466] After the discharge module 91 works for the first discharge time, it stops working. At this time, the ventilation unit is kept closed, the vacuum pump 32 is started, and the pressure in the storage chamber 20 is reduced to form a low-pressure environment.

[0467] When the pressure value in the storage chamber 20 reaches the second pressure value due to the slow air leakage, the vacuum pump 32 operates to reduce the pressure in the storage chamber 20 to the first pressure value.

[0468] When the pressure in the storage chamber 20 is reduced to the first pressure value, the vacuum pump 32 stops working to complete the pressure reduction. The discharge module 91 starts and continues to work for a second discharge time, wherein the second discharge time is shorter than the first discharge time.

[0469] When the door body 3 is opened and then closed, because the air carrying floating bacteria from the outside enters the storage chamber 20 when the door body 3 is opened, or new food is placed in the storage chamber 20 when the door body 3 is opened, the action of opening the door body 3 has a greater impact on the air composition in the storage chamber 20, and the discharge module 91 continues to discharge for a longer first discharge time (first discharge time) than the second discharge time, so as to perform a strong sterilization on the closed storage chamber 20.

[0470] When the door body 3 is kept closed, if the air pressure in the storage chamber 20 rises due to air leakage, after vacuuming and depressurization, the air composition in the storage chamber 20 changes little compared to when the door body 3 is opened. In this case, the discharge module 91 continues to discharge for a second discharge duration that is shorter than the first discharge duration to achieve the purpose of sterilization. In different cases, the discharge module 91 discharges for different durations of sterilization, so as to select a suitable discharge duration in a targeted manner, avoid unnecessary discharge, and reduce power consumption.

[0471] In some embodiments of the present application, when the low-pressure storage device keeps the door 3 closed for a first closing time period, the discharge module 91 is started and continues to work for a first discharge time period to strongly sterilize the storage chamber 20 .

[0472] In the above, the first shutdown time is greater than 2 days; the low-pressure storage device remains closed for a long time, and the long-term closed environment (plus the respiration and transpiration of the food) leads to bacterial growth. At this time, the discharge module 91 continues to work for a longer period of time to sterilize, which can more effectively sterilize the current storage environment.

[0473] In some embodiments of the present application, when the low-pressure storage device keeps the door body 3 closed for a first closing time, the vacuum pump 32 is activated due to the pressure change in the storage chamber 20, and can extract part of the gas in the storage chamber 20. The above external gas enters the storage chamber 20 due to the leakage of the low-pressure storage device, and the vacuum pump 32 extracts gas from the storage chamber 20 to form a partial gas exchange, but because the gas exchange volume is small and the door body 3 is in a closed state for a long time, it is necessary for the discharge module 91 to continuously discharge to strongly sterilize due to the growth of bacteria in the environment.

[0474] In some embodiments of the present application, when the low-pressure storage device keeps the door 3 closed and the vacuum pump 32 has not been working for a first stop time, the discharge module 91 is started and continues to work for a first discharge time to strongly sterilize the storage chamber 20.

[0475] Above, the first stop time that can be set is > 12 hours.

[0476] The low-pressure storage device is kept closed for a long time. When the low-pressure storage device is highly sealed, the pressure-maintaining performance of the low-pressure storage device is good, and the vacuum pump 32 is not started for a long time. The gas in the low-pressure storage device is kept in a sealed space, and the respiration and transpiration of the food cause bacteria to grow. At this time, the discharge module 91 continues to work for a long time to sterilize, which can adjust the current storage environment more quickly and effectively.

[0477] In some embodiments of the present application, an odor sensor is provided in the storage chamber 20. The odor sensor is a device that can detect and identify gas components, and can determine the type and concentration of odors by sensing the chemical composition of the gas. The odor sensor can be configured to identify substances such as volatile amines and determine their concentrations.

[0478] When the odor concentration in the storage chamber 20 reaches the first odor-free concentration, the discharge module 91 is activated and continues to work for the first odor-free time. When the above discharge module 91 is working, the ventilation unit is closed, the storage chamber 20 is disconnected from the outside, and the discharge module 91 discharges the sealed storage chamber 20 to purify the gas therein.

[0479] In some embodiments, the first electrical device is configured as an odor removal module to remove odor molecules in the storage chamber 20 .

[0480] In some embodiments of the present application, when the odor concentration in the storage chamber 20 reaches the first odor-free concentration and the duration of the last vacuuming does not reach the first pressure-maintaining duration, the discharge module 91 is started and continues to work for the first odor-free duration. When the above discharge module 91 is working, the ventilation unit is closed, the storage chamber 20 is disconnected from the outside, and the discharge module 91 discharges the closed storage chamber 20 to purify the gas therein.

[0481] When the odor concentration in the storage chamber 20 reaches the first odor-free concentration and the duration of the last vacuuming reaches the second pressure-maintaining time, the ventilation unit is turned off, the vacuum pump 32 is started, and continues to work for the first vacuuming time. After the vacuum pump 32 stops working, the discharge module 91 is started and continues to work for the second odor-free time. The second pressure-maintaining time is greater than the first pressure-maintaining time.

[0482] As a configurable method, the first pressure holding time is any value between 3 and 5 hours, and the second pressure holding time is any value between 10 and 12 hours.

[0483] As a configurable manner, the first pressure holding time = the second pressure holding time.

[0484] When the holding time after vacuuming reaches the second holding time, due to the long holding time, it is close to the start of the next vacuuming. At this time, vacuuming is performed first, and then discharge deodorization is performed to prevent the ions released by discharge deodorization from being extracted when the next vacuuming is started, thereby weakening the deodorization effect.

[0485] In some embodiments of the present application, when deodorizing, when the discharge module 91 continues to work for a first deodorizing time (such as 20 minutes), and the odor concentration recognized by the odor sensor is higher than the second deodorizing concentration, the discharge module 91 stops working.

[0486] In addition, when the low-pressure storage device remains closed, the odor sensor no longer recognizes the odor in real time; instead, it recognizes once every set odor recognition time. If the odor concentration in the storage chamber 20 reaches the first odor-free concentration, the discharge module 91 starts and stops working after the first odor-free time. Until the next time the low-pressure storage device is opened, the above odor recognition operation is maintained, and the time-controlled discharge odor-free operation is performed. Among them, the second odor-free concentration is less than the first odor-free concentration.

[0487] As a configurable manner, the second clean taste concentration is 80% to 90% of the first clean taste concentration.

[0488] When high-odor ingredients such as durian meat and fermented tofu are stored in a low-pressure storage device, the above operation can, on the one hand, relatively reduce the odor concentration; on the other hand, it can avoid ineffective odor removal operations and reduce energy consumption (the source of the odor of high-odor ingredients is the food itself, not the concentration accumulated in a long-term sealed environment).

[0489] In some embodiments of the present application, the low-pressure storage device has a low-pressure preservation mode, a sterilization preservation mode, and a deodorization preservation mode.

[0490] The discharge module 91 has a first discharge mode and a second discharge mode; wherein the first discharge mode of the discharge module 91 is mainly corona discharge, which produces a large amount of strong oxidizing active substances, including ozone, atomic oxygen, ground state oxygen, etc., mainly for deodorization and auxiliary sterilization. The second discharge mode is air discharge (sterilization), which mainly produces positive and negative ion groups for sterilization.

[0491] In the sterilization and fresh-keeping mode, the discharge module 91 discharges in the second discharge mode; and in the odor removal and fresh-keeping mode, the discharge module 91 discharges in the first discharge mode.

[0492] The low-pressure preservation mode is mainly used to store dry ingredients and anti-oxidation; the sterilization preservation mode is mainly used to store maternal and infant ingredients; the odor-free preservation mode is mainly used to store ingredients with stronger odors, such as cooked food (braised beef).

[0493] In some embodiments of the present application, the ion generating module and the power supply module are both arranged on the adapter plate 7. The above arrangement enables the ion generating module and the power supply module to be detachably connected to the housing 2 through the adapter plate 7, which is convenient for testing the ion generating module and the power supply module, and also convenient for installing the ion generating module and the power supply module.

[0494] The storage chamber 20 is provided with the aforementioned controlled atmosphere membrane assembly to form a low oxygen environment in the low pressure storage chamber 12 .

[0495] In some embodiments, the first electrical device is configured as a sterilization module to sterilize the storage chamber 20 .

[0496] In some embodiments of the present application, Figure 28-Figure 34 ,like Figure 35-Figure 39 As shown, a photodynamic sterilization module is disposed in the storage chamber 20 to sterilize the storage chamber 20 through the light emitted by the module.

[0497] In some embodiments, the photodynamic sterilization module includes a light emitting component 93. When the light emitting component 93 is powered on, the light emitted is blue-violet. The wavelength distribution range can be set to be between 390 and 420 nm.

[0498] In some embodiments, the photodynamic sterilization module includes a second circuit board 92 and a light-emitting component 93. The second circuit board 92 is connected to the two conductive structures 6, and the light-emitting component 93 is connected to the second circuit board 92. When the light-emitting component 93 is powered on, the light it releases is bluish purple. The wavelength distribution range can be set to be between 390 and 420 nm. The bluish purple light released by the light-emitting component 93 kills and destroys the molecular structure of deoxyribonucleic acid or ribonucleic acid in bacteria and viruses, causing growth cell death and (or) regenerative cell death, achieving the effect of sterilization and disinfection, and is used to sterilize and deodorize the storage chamber 20.

[0499] In some embodiments of the present application, the photodynamic sterilization module is disposed on the top wall of the housing 2 so that the light emitted by the light-emitting component 93 can irradiate various areas in the storage chamber 20 .

[0500] As a configurable manner, the power supply module and the photodynamic sterilization module are both arranged on the top wall of the shell 2 .

[0501] As a setting mode, the light emitting center of the light emitting component 93 is located at the geometric center of the top wall of the housing 2 .

[0502] As a configurable method, the photodynamic sterilization module is arranged on the adapter plate 7. The above arrangement enables the photodynamic sterilization module and the power-on module to be detachably connected to the housing 2 through the adapter plate 7, which is convenient for testing the photodynamic sterilization module and the power-on module, and also convenient for installing the photodynamic sterilization module and the power-on module.

[0503] In some embodiments of the present application, the opening 28 is formed on the top wall of the housing 2 , and the adapter plate 7 is installed on the top wall of the housing 2 .

[0504] In some embodiments of the present application, the photodynamic sterilization module includes a second circuit board 92 and a light-emitting component 93 connected to the second circuit board 92 .

[0505] In some embodiments of the present application, the photodynamic sterilization module includes a glass plate 8, a second circuit board 92, and a light-emitting component 93 connected to the second circuit board 92. The glass plate 8 is located on the side of the light-emitting component 93 close to the storage chamber 20. The glass plate 8 protrudes toward the side close to the storage chamber 20, and the light emitted by the light-emitting component 93 enters the storage chamber 20 after passing through the glass plate 8. The above glass plate 8 is configured to protrude toward the side close to the storage chamber 20, and it has a light-collecting function to allow more light to enter the storage chamber 20.

[0506] In some embodiments of the present application, a cover 17 is installed on a side of the light emitting component 93 away from the storage chamber 20 to protect the light emitting component 93 .

[0507] In some embodiments of the present application, a mounting groove 25 is formed on the housing 2 , and a mounting bar 80 matching the mounting groove 25 is provided on a side of the glass plate 8 close to the storage chamber 20 .

[0508] In addition, a support platform 24 is formed on the shell 2, and the support platform 24 surrounds the periphery of the mounting groove 25, and the height of the support platform 24 is higher than the mounting groove 25. The cover 17 has a matching plate 18 located at its circumferential edge, and a support plate 19 located on the side of the cover 17 close to the storage chamber 20. Among them, the matching plate 18 of the cover 17 matches with the support platform 24 on the shell 2, and the support plate 19 on the cover 17 matches with the glass plate 8. The light-emitting component 93 is installed in the space defined by the support plate 19, the cover 17 and the glass plate 8. The above arrangement forms a light-gathering space, and utilizes the light-gathering effect of the glass plate 8 protruding toward the side close to the storage chamber 20 to reduce light loss and increase the light entering the storage chamber 20.

[0509] A sealing ring 71 is disposed between the mounting strip 80 and the mounting groove 25 to seal the two.

[0510] In some embodiments of the present application, the low-pressure storage device has a low-pressure preservation mode, a sterilization preservation mode, a rapid sterilization mode, and a normal sterilization mode.

[0511] Among them, the low-pressure preservation mode is mainly used to store dry food and anti-oxidation; the sterilization and preservation mode is mainly used to store maternal and infant food.

[0512] In the rapid sterilization mode, the ion generation module or the photodynamic sterilization module operates at a first power for a first sterilization duration. In the normal sterilization mode, the ion generation module or the photodynamic sterilization module operates at a second power for a second sterilization duration. The first power is not less than the second power, and the first sterilization duration is less than the second sterilization duration.

[0513] As a configurable manner, in the normal sterilization mode, the ion generating module or the photodynamic sterilization module operates at a second power for a second sterilization duration at a first time interval.

[0514] As mentioned above, the rapid sterilization mode is mainly used to sterilize immediately edible food materials so as to sterilize the food materials in a short time.

[0515] The normal sterilization mode is mainly used to sterilize general food ingredients and does not have high requirements for ready-to-use.

[0516] As a configurable manner, the ion generating module or the photodynamic sterilization module moves at the first power for 15 minutes.

[0517] In the normal sterilization mode, the ion generation module or the photodynamic sterilization module operates at the second power for 3 minutes every 6 hours.

[0518] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0519] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: include: Box; A storage device is defined and formed in the box body, the storage device includes a shell defining a storage chamber and having a storage opening, the shell includes a top and a bottom disposed opposite to each other, and the shell has a shell rear wall disposed opposite to the storage opening; an air extraction device connected to the storage chamber and used to extract the air in the storage chamber to form a low-pressure state in the storage chamber; A through hole, which is provided on the top of the shell or the rear wall of the shell and is used to connect the inside and outside of the storage chamber; A first electrical device, which is disposed inside the storage chamber; a second electrical device disposed outside the storage chamber; A conductive structure, the conductive structure is used to realize electrical connection between the first electrical device and the second electrical device, the conductive structure further comprising: A conductive portion, part of which enters the storage chamber through the through hole and part of which is disposed outside the storage chamber, wherein the part disposed inside the storage chamber is connected to the first electrical device and the part disposed outside the storage chamber is connected to the second electrical device; a fixing plate, which is arranged at the periphery of the conductive part and is placed outside the storage chamber; The refrigerator further comprises: A sealing structure, which is sleeved on the conductive portion and is placed on a side of the fixing plate close to the interior of the storage chamber; A mounting structure, which is arranged on a side of the fixing plate away from the interior of the storage chamber, and the mounting structure is used to apply a pre-tightening force toward the interior of the storage chamber to the fixing plate; After the conductive structure, the sealing structure and the mounting structure are assembled, under the action of the pre-tightening force of the mounting structure, the conductive structure moves toward the direction close to the interior of the storage chamber and squeezes the sealing structure, so that the assembled sealing structure has a first contraction distance compared to the unassembled sealing structure; During the vacuuming process of the vacuum device, the air pressure in the storage chamber gradually decreases to below the external atmospheric pressure, and the conductive structure tends to move toward the sealing structure under the action of the pressure difference inside and outside the storage chamber, so that the sealing structure is further compressed and forms a second contraction distance, wherein the second contraction distance is smaller than the first contraction distance.

2. A refrigerator, characterized in that: include: Box; A storage device is defined and formed in the box body, the storage device includes a shell defining a storage chamber and having a storage opening, the shell includes a top and a bottom disposed opposite to each other, and the shell has a shell rear wall disposed opposite to the storage opening; an air extraction device connected to the storage chamber and used to extract the air in the storage chamber to form a low-pressure state in the storage chamber; A through hole, which is provided on the top of the shell or the rear wall of the shell and is used to connect the inside and outside of the storage chamber; A first electrical device, which is disposed inside the storage chamber; a second electrical device disposed outside the storage chamber; A conductive structure, the conductive structure is used to realize electrical connection between the first electrical device and the second electrical device, the conductive structure further comprising: A conductive portion, part of which enters the storage chamber through the through hole and part of which is placed outside the storage chamber; the part placed inside the storage chamber is connected to the first electrical device, and the part placed outside the storage chamber is connected to the second electrical device; a fixing plate, which is arranged at the periphery of the conductive part and is placed outside the storage chamber; The refrigerator further comprises: A sealing structure, which is sleeved on the conductive part and is placed on a side of the fixing plate close to the interior of the storage chamber, wherein the through hole, the sealing structure, the fixing plate and the conductive part form a chamber connected to the storage chamber; A mounting structure, which is arranged on a side of the fixing plate away from the interior of the storage chamber, and the mounting structure is used to apply a pre-tightening force toward the interior of the storage chamber to the fixing plate; After the conductive structure, the sealing structure and the mounting structure are assembled, under the action of the pre-tightening force of the mounting structure, the conductive structure moves toward the direction close to the interior of the storage chamber and squeezes the sealing structure, so that the space of the chamber is reduced by a first contraction volume; During the vacuuming process of the vacuum device, the air pressure in the storage chamber gradually decreases to below the external atmospheric pressure, and the conductive structure tends to move toward the sealing structure under the action of the pressure difference inside and outside the storage chamber, so as to further compress the space of the chamber and reduce the second contraction volume, thereby shortening the sealing boundary of the storage chamber, wherein the second contraction volume is smaller than the first contraction volume.

3. The refrigerator according to claim 1 or 2, characterized in that: It also includes a receiving portion, which is arranged on the top of the shell or the rear wall of the shell and is recessed toward the inside of the shell, and the bottom of the receiving portion is provided with the through hole; The sealing structure is pressed against the bottom of the accommodating portion under the action of the pre-tightening force of the mounting structure to seal the through hole.

4. The refrigerator according to claim 1 or 2, characterized in that: The mounting structure comprises: A pressing plate, the pressing plate is sleeved on the conductive part and matched with the fixing plate; A connecting plate, which is located at the periphery of the pressing plate away from the conductive part and is fixedly connected to the housing; After the connecting plate is fixedly connected to the shell, the pressing plate is pressed toward the fixing plate, and the sealing structure is squeezed through the fixing plate and the shell to provide a pre-tightening force on the sealing structure, so that the sealing structure is sealed and connected to the fixing plate and the shell.

5. The refrigerator according to claim 1 or 2, characterized in that: The mounting structure comprises: A mounting portion, one end of which is connected to the housing, and the other end of which extends to a side of the fixing plate away from the sealing structure; an abutting portion, which is disposed at the other end of the mounting portion and is disposed on a side of the mounting portion close to the fixing plate; The abutting portion is pressed toward the fixing plate, and the sealing structure is squeezed through the fixing plate and the shell, providing a pre-tightening force on the sealing structure, so that the sealing structure is sealed and connected with the fixing plate and the shell.

6. The refrigerator according to claim 3, characterized in that: It also includes a first protective cover, which is arranged on a side of the accommodating portion away from the interior of the storage chamber, and the first protective cover cooperates with the end of the accommodating portion away from the interior of the storage chamber to form a first accommodating cavity.

7. The refrigerator according to claim 6, characterized in that: It also includes a sealing strip, which is arranged at the matching position of the first protective cover and the accommodating portion.

8. The refrigerator according to claim 1 or 2, characterized in that: The first electrical device is configured as a photodynamic sterilization module, and the photodynamic sterilization module is disposed on the top wall of the housing to sterilize the storage chamber by the light emitted by the module.

9. The refrigerator according to claim 8, characterized in that: The photodynamic sterilization module comprises: A circuit board, which is arranged on the top wall of the housing; a light emitting component, which is electrically connected to the circuit board, A glass plate is located on a side of the light-emitting component close to the storage chamber, the glass plate protrudes toward the side close to the storage chamber, and the light emitted by the light-emitting component passes through the glass plate and enters the storage chamber.

10. The refrigerator according to claim 1 or 2, characterized in that: The conductive part includes a first conductive part and a second conductive part respectively disposed on opposite sides of the fixing plate; The refrigerator further comprises: A wire, one end of which is connected to the first electrical component, and the other end of which is sleeved on the first conductive part.

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