Refrigerating appliance

Abstract

A refrigeration appliance comprises a storage chamber, a low-pressure storage unit is contained in the storage chamber, the low-pressure storage unit comprises a drawer, the drawer defines a storage space and is provided with an upward opening, and the drawer can be pulled out of or pushed back into the storage chamber; the cover body is supported in the storage chamber, and when the drawer is pushed back to the storage chamber, the cover body moves from a first position separated from the opening to a second position so as to seal and close the opening; and the suction assembly is arranged on the cover body and is used for forming a low-pressure environment of the storage space when the cover body is in a state of closing the opening. The modular design of the low-pressure storage unit is facilitated, so that the low-pressure storage unit can be applied to different refrigeration appliance platforms, and maintenance is facilitated.

Description

Technical Field

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

[0002] Refrigeration appliances, especially refrigerators, are an indispensable household appliance in a family, and low-pressure storage appliances can improve their food storage and preservation capabilities, avoid food spoilage and waste, and bring great convenience to people's lives. However, on the one hand, the sealing of low-pressure storage appliances is not stable enough, which may cause food spoilage or waste; on the other hand, since low-pressure storage containers need to cooperate with closing elements, the user's operation is cumbersome, the manufacturing cost is high, it is not conducive to disassembly and assembly, the price is relatively expensive, and it is not conducive to the full utilization of the refrigeration appliance space, etc., which affects the competitiveness of the product. Therefore, in view of the above problems and shortcomings, the present invention provides a new refrigeration appliance solution to optimize the problems existing in existing refrigeration appliances in low-pressure storage. Summary of the invention

[0003] An object of an embodiment of the present invention is to provide an improved refrigeration appliance.

[0004] An embodiment of the present invention provides a refrigeration appliance, comprising: a storage chamber, wherein a low-pressure storage unit is accommodated in the storage chamber, and the low-pressure storage unit comprises: a drawer, which defines a storage space and has an opening that opens upward, and the drawer can be pulled out or pushed back into the storage chamber; a cover body, which is supported in the storage chamber and moves from a first position separated from the opening to a second position to seal and close the opening when the drawer is pushed back into the storage chamber; and a suction assembly, which is arranged on the cover body and is used to work when the cover body is in a state of closing the opening to form a low-pressure environment in the storage space.

[0005] The solution provided by the embodiment of the present invention is that the suction assembly is arranged on the cover body, the cover body is supported in the storage chamber, and when the drawer is pushed back into the storage chamber, it moves from a first position separated from the opening to a second position to seal the opening and provide a low-pressure storage environment. Therefore, the modular design of the drawer and the cover body with a pump greatly simplifies the complex structure of the outer warehouse body required for the low-pressure storage container, facilitates the modular design of the low-pressure storage unit so that it can be applied to different refrigeration appliance platforms, and also facilitates the maintenance of some components.

[0006] Optionally, the cover includes a limiting portion to limit the displacement of the drawer relative to the cover in the width direction ±X of the low-pressure storage unit when the drawer is pushed back into the storage chamber, so as to facilitate the alignment between the moving drawer and the cover.

[0007] Optionally, when the drawer is pushed back into the storage chamber, the cover is actuated by the drawer to displace in the depth direction Z of the storage chamber so that the drawer enters a sealed state, thereby simplifying the operation and linkage structure of the low-pressure storage unit.

[0008] Optionally, a reinforcement structure is provided on the cover body, and the reinforcement structure covers a projection area formed by the cover body along the height direction Y of the storage chamber, so as to provide a cover body that adapts to a negative pressure state.

[0009] Optionally, the storage chamber includes a pair of supporting bodies arranged opposite to each other for supporting the cover body, and in the second position for sealing and closing the opening, the upper surface of the cover body is higher than the upper surface of the supporting body, which is conducive to fully utilizing the installation space at the top of the storage chamber.

[0010] Optionally, the opening extends toward the outside of the storage space to form an edge that seals with the cover, and the edge is used as a sealing surface structure to form a hollow cavity, which is beneficial for providing a sealing surface that adapts to a negative pressure state.

[0011] Optionally, the cover body is provided with a receiving cavity for receiving the suction assembly, which is conducive to forming a compact and functional cover body that is convenient to disassemble or replace.

[0012] Optionally, a gas channel connected to the storage space is provided in the accommodating cavity, and the suction component is connected to the gas channel to suck the gas in the storage space.

[0013] Optionally, a sealing surface of the cover body that closes the opening is inclined downward from front to back along a depth direction Z of the storage chamber, and the accommodating cavity is adjacent to a rear end of the cover body.

[0014] Optionally, the suction assembly is accommodated in the accommodating cavity and at least partially protrudes from the main plane of the cover body.

[0015] Optionally, a heating device is provided in the accommodating chamber, which is helpful to prevent the gas channel or pipeline from freezing.

[0016] Optionally, at least two reinforcement structures are superimposed on at least a portion of the area around the accommodating cavity.

[0017] Optionally, the gas channel is configured as a tube extending from a wall surface of the accommodating cavity.

[0018] Optionally, the cover body includes a cover main body and an upper cover, the upper cover is arranged on the cover main body, and the suction assembly is fixed between the upper cover and the cover main body.

[0019] Optionally, the upper surface of the cover body includes a smooth surface extending along the width direction of the cover body, and the smooth surface serves as a part of the appearance surface of the cover body.

[0020] Optionally, the upper cover is flush with at least a portion of the upper surface of the cover body to form the outer surface of the cover body.

[0021] Optionally, the bearing strength of the cover body is greater than the bearing strength of the upper cover.

[0022] Optionally, a positioning portion is provided on the upper cover, and the positioning portion is used to clamp at least part of the suction component in the cover body.

[0023] Optionally, a concave surface matching the shape of the suction assembly is provided on the upper cover, and the suction assembly is clamped between the concave surface and the cover body.

[0024] Optionally, the upper cover forms an opposing plug plate at a position corresponding to the suction component, and the plug plate limits the radial displacement of the suction component.

[0025] Optionally, the suction assembly includes a suction pump, and a flexible sleeve is arranged on the outside of the suction pump. When the upper cover is placed on the cover body, the flexible sleeve can be deformed so that the suction pump is tightly clamped between the concave surface and the cover body.

[0026] Optionally, a buckle is provided on a side of the plug plate away from the suction assembly and is engaged with a buckle hole on the wall surface of the groove.

[0027] Optionally, a reinforcement structure is provided on the upper surface and / or the lower surface of the cover body.

[0028] Optionally, at least three reinforcement structures with different reinforcement strengths are arranged on the cover body.

[0029] Optionally, the middle portion of the cover body includes at least a second wavy reinforcing structure.

[0030] Optionally, at least two different reinforcement structures are superimposed on the middle portion of the cover body.

[0031] Optionally, the plane is formed by the first reinforcement structure extending obliquely upward, which is beneficial to minimizing the thickness of the cover body that meets the negative pressure requirement.

[0032] Optionally, the reinforcement structure is integrally formed with the cover body.

[0033] Optionally, both sides of the cover body include side edges extending toward the drawer.

[0034] Optionally, in the first position where the cover is separated from the opening, the side edge is located outside the side wall and at least partially overlaps with the side wall in the height direction of the storage chamber.

[0035] Optionally, a sealing member is provided on the lower surface of the cover, and the side edge at least exceeds the bottom surface of the sealing member, which is beneficial to the alignment of the cover and the drawer.

[0036] Optionally, a notch is provided in an area of ​​the side near the front end of the cover body.

[0037] Optionally, the cover body includes a guide structure, and the guide structure guides the circulating air in the storage chamber.

[0038] Optionally, a long groove is provided at the rear end of the cover body to avoid the air outlet in the storage chamber.

[0039] Optionally, a reinforcement portion is provided on the rear wall of the drawer, and the reinforcement portion at least includes a transverse rib whose upper surface is inclined downward by 0.5-5° relative to the bottom wall.

[0040] Optionally, the guide structure includes a first inclined surface, which is located at the rear end of the cover body and inclined downward from front to back along the depth direction of the storage chamber.

[0041] Optionally, the suction assembly partially protrudes from the main plane of the cover body, a convex portion matching the protruding portion of the drawer assembly is formed on the cover body, and a shark fin-shaped guide rib is provided on the convex portion.

[0042] Optionally, vertical ribs are provided in an area of ​​the rear end surface of the cover body corresponding to the long groove.

[0043] Optionally, a drainage hole is provided on the cover body.

[0044] Optionally, the drainage hole is located on the side of the cover body and is connected to the interior of the cover body.

[0045] Optionally, a connector mounting portion is provided on the cover body, and the drainage hole is connected to the connector mounting portion.

[0046] Optionally, the support body includes a force applying mechanism, and the force applying mechanism is suitable for keeping the cover body in the first position.

[0047] Optionally, the support body includes a first channel and a second channel arranged front to back along the depth direction of the storage chamber, and the first channel and the second channel are at least partially inclined to provide a movement path for the cover body to move from a first position to a second position, and the first position is higher than the second position.

[0048] Optionally, a reinforcing member having strength greater than that of the drawer body is arranged in the hollow cavity.

[0049] Optionally, the refrigeration appliance comprises a locking mechanism, and when the cover is driven by the drawer to the second position, the locking mechanism locks the drawer in the storage chamber.

[0050] Optionally, the refrigeration appliance comprises a release mechanism, which is arranged at the front side of the drawer, so that a user can manipulate the release mechanism to allow the release mechanism to move relative to the drawer, thereby driving a locking mechanism to unlock the drawer.

[0051] In addition, the present invention also proposes a control method for a refrigeration appliance, characterized in that: the refrigeration appliance includes a storage chamber, a low-pressure storage unit is accommodated in the storage chamber, and the low-pressure storage unit includes: a drawer, the drawer defines a storage space and has an opening that opens upward, and the drawer can be pulled out or pushed back into the storage chamber; a cover body, the cover body is supported in the storage chamber, and when the drawer is pushed back into the storage chamber, the cover body moves from a first position separated from the opening to a second position to seal and close the opening; and a suction assembly is arranged on the cover body, and is used to work when the cover body is in a state of closing the opening to form a low-pressure environment in the storage space, the method includes: when the drawer and the cover body are sealed and closed, judging whether the door of the refrigeration appliance is closed, if closed, controlling the suction assembly to stop after working continuously for T time.

[0052] Optionally, the suction component is controlled to start working continuously after a waiting time t1.

[0053] Optionally, when it is detected that the drawer is not opened within a predetermined time period S1, the suction component is controlled to continue working for a time period T' and then stop.

[0054] Optionally, when the drawer is opened and not closed after t2 time, an alarm is triggered.

[0055] Optionally, the alarm may be a door alarm sounding, and / or a corresponding icon on a display lighting up or flashing, and / or a push notification on an interconnected mobile phone APP.

[0056] Optionally, when it is determined that the door of the refrigeration appliance is closed, the temperature M in the storage room is measured, and a preset vacuum pump continuous suction time T is selected according to the detected temperature M. In this way, the control of the low-pressure storage unit is associated with the real-time temperature of the storage room, which is conducive to avoiding excessive temperature difference changes, resulting in too small internal pressure values, and then causing large deformation of the low-pressure storage unit structure, which has an adverse effect on life or performance.

[0057] Optionally, when the temperature M≤5°C, the continuous suction time T of the preset suction component is T1, and when the temperature M>15°C, the continuous suction time T of the preset suction time is T2, and T2 is less than T1. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The present application will be described in more detail below with reference to the accompanying drawings, so that the principles, features and advantages of the present application can be better understood. The accompanying drawings include:

[0059] Figure 1 is a schematic front view of a refrigeration appliance according to a preferred embodiment of the present invention;

[0060] Figure 2 is along Figure 1 AA cuts through the storage room to show the front view of the components on the side wall;

[0061] Figure 3 yes Figure 1 3D exploded view of medium and low pressure storage unit (including support);

[0062] Figure 4 yes Figure 1 A cross-sectional view of a position of the medium and low pressure storage unit in a closed state;

[0063] Figure 5 yes Figure 1 A cross-sectional view of another position of the medium and low pressure storage unit in a closed state;

[0064] Figure 6 is with Figure 5 A cross-sectional view of the corresponding low-pressure storage unit in an open state (the spring is omitted);

[0065] Figure 7 yes Figure 3 Exploded perspective view of the drawer shown in ;

[0066] Figure 8 yes Figure 7 A partial enlarged view of the middle C area;

[0067] Fig. 9 Shows Figure 8 An exploded view of the first mating portion shown;

[0068] Fig.10 Shows Figure 7 Sectional view of the middle drawer;

[0069] Fig.11 A rear perspective view of the drawer body is shown;

[0070] Fig.12 Shown along Fig.11 BB cuts through the drawer body;

[0071] Fig.13 Shows Figure 3 A three-dimensional exploded view of the cover shown;

[0072] Fig.14 Shows Fig.13 A top view of the cover body shown;

[0073] Fig.15 Shows Fig.13a bottom view of the cover body shown;

[0074] Fig.16 Shows Fig.15 A partial stereoscopic enlarged image of the middle D area;

[0075] Fig.17 Shows Fig.13 A three-dimensional view of the upper cover shown;

[0076] Fig.18 and 19 Shows Figure 3 3D exploded views of the support body at different angles on the middle right;

[0077] Fig. 20 Shows Figure 3 The movement process of the cover installation in the structure shown; wherein S1 shows the state of the second support shaft being installed in the second channel; S2 shows the state of the first support shaft being installed in the first channel; S3 is the state when the cover is in the second position and closed; S4 is the state when the cover is in the first position and opened;

[0078] Fig.21 Shows Figure 3 A front view of the middle right support body when the cover body is not installed;

[0079] Fig. 22 Shown along Fig.21 EE cross-sectional view of the support body. DETAILED DESCRIPTION

[0080] Exemplary embodiments of the present invention will now be described in detail, wherein like reference numerals represent like elements throughout the drawings. The embodiments will be described below to explain the present invention by referring to the drawings.

[0081] The refrigeration appliance 1000 may be, for example, a refrigerator, a freezer, a freezer, or other equipment that requires separation, sealing, and low-temperature storage of items.

[0082] Please refer to Figure 1 The refrigeration appliance 1000 is configured as a household refrigerator, which generally includes an insulated box body, which includes an outer shell, an inner liner, and an insulating layer (not shown) located therebetween. The box body defines a plurality of insulated storage chambers 1100, 1200, 1300 for storing food and other items. In an illustrative embodiment of the present application, these storage chambers are respectively a refrigerating chamber 1100 located at the upper part of the refrigerator and a freezing chamber 1200, 1300 located at the lower part. The storage chambers 1100, 1200, 1300 are suitable for accommodating one or more storage containers; at the same time, the storage chambers 1100, 1200, 1300 can be closed by respective corresponding appliance doors (not shown).

[0083] It should be understood that the present invention should not be limited to the specific distribution of the storage compartments of the refrigerator. The present invention can also be applied to other forms of refrigerators, such as a refrigerator with a refrigeration compartment and a freezer compartment distributed on the left and right, a refrigerator with a variable temperature chamber between the refrigeration compartment and the freezer compartment, a double-door refrigerator with storage compartments arranged side by side, and a refrigerator with drawer doors and / or French double doors.

[0084] The refrigeration appliance 1000 has an evaporative refrigeration system that forms a closed loop. The refrigeration system at least includes a compressor (not shown), a condenser (not shown), a throttling device (not shown) and an evaporator (not shown). In view of the fact that such a refrigeration system is a well-known technology in the prior art, further description thereof is omitted. Of course, the refrigeration appliance 1000 can also use other forms of refrigeration systems (such as absorption refrigeration systems, thermoelectric refrigeration systems).

[0085] Figure 1 FIG. 1 is a schematic diagram of a refrigeration appliance 1000 according to an embodiment of the present invention. Figure 1 The storage chamber 1100 may include a pair of compartment side walls 1100 a and a compartment rear wall 1100 b , and the pair of compartment side walls 1100 a and the compartment rear wall 1100 b form a storage space suitable for accommodating the low-pressure storage unit 900 .

[0086] Optionally, a shelf 1010 is disposed above the low-pressure storage unit 900, and a rib 1120 for supporting the shelf 1010 is disposed on the compartment sidewall 1100a. In one or more embodiments, the support body 500 can be used to support the shelf 1010. This helps save storage space.

[0087] Optionally, a middle partition wall 1110 is also constructed in the storage chamber 1100. This middle partition wall 1110 can be integrally formed with the inner liner, or can be detachably installed on the inner liner. Even, the middle partition wall 1110 can be constructed to be height-adjustable. The low-pressure storage unit 900 can be supported on the compartment side wall 1100a and / or the middle partition wall 1110. The compartment rear wall 1100b can be the inner liner, or it can be the back plate of the refrigeration appliance 1000.

[0088] exist Figure 1 and Figure 3 An XYZ coordinate system is shown in some subsequent figures, wherein X represents the width direction of the storage chamber 1100 or the low-pressure storage unit 900, Y represents the height direction of the storage chamber 1100 or the low-pressure storage unit 900, and Z represents the depth direction of the storage chamber 1100 from front to back or the depth direction of the low-pressure storage unit 900.

[0089] For example, multiple containers and / or low-pressure storage units may be arranged in parallel along the X direction, +Y direction or -Y direction in the storage chambers 1100, 1200, 1300. Next, a low-pressure storage unit 900 placed in the storage chamber 1100 is used as an example for detailed description.

[0090] Figure 2 is along Figure 1 The AA cutaway storage compartment 1100 shows a front view of components on the side wall; Figure 3 yes Figure 1 A three-dimensional exploded view of a low-pressure storage unit 900 in a refrigeration appliance; Figure 4 yes Figure 1 A cross-sectional view of the medium and low pressure storage unit 900 in a closed state at one position (cut-away drawer); Figure 5 yes Figure 1 A cross-sectional view of the medium and low pressure storage unit 900 at another position in a closed state (cutting through the support body); Figure 6 is with Figure 5 Corresponding position is a cross-sectional view of the low-pressure storage unit 900 in an open state.

[0091] Specifically, combined Figures 2 to 5 The low-pressure storage unit 900 includes a drawer 100, which defines at least one storage space 101 and has an opening 102 that opens upward. A user can take out stored items placed in the storage space 101 from the opening 102, or the user can also place stored items in the storage space 101 from the opening 102. The drawer 100 can be pushed and pulled forward and backward inside the storage room 1100 along the depth direction of the storage room.

[0092] Optionally, guide rails 600 may be arranged in pairs in the storage chamber 1100 , guide rail ribs 105 may be provided on the drawer 100 , and the drawer 100 may be installed on the guide rails 600 via the guide rail ribs 105 . The guide rails 600 guide the drawer 100 to be arranged inside the storage chamber 1100 in a push-pull manner.

[0093] Furthermore, one end of the guide rail rib 105 is provided with an insertion portion 106 for inserting into the guide rail, and a snap-fitting hole 107 for snap-fitting with the guide rail 600. This facilitates the guide rail rib 105 to be installed with the guide rail 600 with little shaking.

[0094] In one or more embodiments, the guide rail 600 may preferably be a damping guide rail or a self-locking guide rail to facilitate preventing impact damage caused by excessive force when the drawer is pushed back.

[0095] The low-pressure storage unit 900 includes a cover 200 supported in the storage chamber 1100 for moving from a first position separated from the opening 102 to a second position to sealably close the opening 102 when the drawer 100 is pushed back into the storage chamber 1100 .

[0096] Specifically, a pair of supporting bodies 500 are arranged opposite to each other in the storage chamber 1100, and the cover 200 is supported above the opening 102 of the drawer 100 by the supporting bodies 500 and can move relative to the supporting bodies 500. When the user pushes back the drawer 100, the cover 200 is driven by the drawer to move from the first position to the second position. In this way, the cover enters a sealed closed state when the drawer is pushed back, without the need for a complex driving structure or operating steps, which is conducive to simplifying user operations and maintaining the sealing of the low-pressure storage unit.

[0097] Figure 4 It is exemplarily shown that when the cover 200 is closed on the opening 102, the cover 200 is configured with a seal 220 surrounding the opening 102, but it should be understood that the seal 220 configured as a sealing ring can be arranged (for example: clamped, bonded) at the lower part of the cover 200, and can also be arranged on the edge of the opening 102.

[0098] The low-pressure storage unit 900 includes a suction assembly 800, which is disposed on the cover 200. The suction assembly 800 is used to work when the cover 200 is in a state of closing the opening 102 to provide a low-pressure environment for the storage space 101. In this way, the low-pressure storage unit 900 does not need to be provided with an external compartment outside the drawer as in the prior art, which is more conducive to the modular design of the low-pressure storage unit so as to be applied to different refrigeration appliance platforms. Therefore, the modular design is also more conducive to the maintenance of some components than the low-pressure storage unit in the form of an external compartment.

[0099] Optionally, the support body 500 and / or the guide rail assembly 600 of the low-pressure storage unit 900 are fixed to the compartment side wall 1100a in pairs, or are fixed to one compartment side wall 1100a and one side of the middle partition wall 1110 respectively.

[0100] See attached Figure 5-6 The low-pressure storage unit 900 includes a locking mechanism 400, which is used to lock the drawer 100 relative to the refrigeration appliance 1000 when the drawer 100 is pushed back. In this way, the locking mechanism 400 limits the movement of the drawer and the cover relative to the refrigeration appliance 1000, which is conducive to the stability and reliability of the sealed environment of the low-pressure storage unit.

[0101] Furthermore, the low-pressure storage unit 900 further includes a release mechanism 300, which is disposed at the front side of the drawer 100, so that the user can manipulate the release mechanism 300 to allow the release mechanism 300 to move relative to the drawer 100, thereby driving the locking mechanism 400 to unlock the drawer 100. In particular, the release mechanism 300 can be used as a handheld portion for pulling the drawer 100 out of the storage chamber 1100. This is conducive to the user quickly unlocking the low-pressure sealed state of the low-pressure storage unit.

[0102] In this way, the user only needs to push back the drawer 100 to close the cover and lock the low-pressure storage unit 900. The suction assembly 800 on the cover 200 works to provide a low-pressure storage environment for the drawer 100 when the cover 200 closes the opening 102. When it is necessary to take out items, it is only necessary to operate the release mechanism 300 to pull out the drawer 100, which is conducive to reducing the complexity of the operation of the low-pressure storage unit and ensuring the effectiveness and reliability of the low-pressure sealed environment.

[0103] Next, we will introduce the various parts of the low-pressure storage unit in detail with reference to the attached drawings. Figure 7 Shows Figure 3 An exploded perspective view of the drawer shown; Figure 8 Shows Figure 7 Magnified view of region C shown;

[0104] Fig. 9 Shows Figure 8 An exploded view of the first mating portion shown; Fig.10 Shows Figure 7 Cross-sectional view of the middle drawer; Fig.11 Shows Figure 7 A rear perspective view of the middle drawer body; Fig.12 Shown along Fig.11 BB cuts through the drawer body in cross-section.

[0105] Specifically, combined Figure 7-10 As shown, the drawer 100 may include a drawer body 104 and a front panel 103 located in front of the drawer body 104 .

[0106] Specifically, the drawer body 104 may include a front wall 104a, a rear wall 104b, a bottom wall 104c, a pair of side walls 104d, and a storage space 101 surrounded by the front wall 104a, the rear wall 104b, the bottom wall 104c, and the pair of side walls 104d. The upper edges of the front wall 104a, the rear wall 104b, the bottom wall 104c, and the pair of side walls 104d together form an opening 102, and the opening 102 exposes the storage space 101. The drawer body 104 is preferably an integrally formed part.

[0107] A protruding reinforcement portion 115 is formed integrally from the outer surfaces of the front wall 104a, the rear wall 104b and the bottom wall 104d. The visual expression of the drawer appearance is not damaged while maintaining low pressure. In particular, the reinforcement portion 115 extends over the outer surfaces of the front wall 104a, the rear wall 104b and the bottom wall 104d.

[0108] Combined with Figure 7 The opening side of the peripheral wall of the drawer body 104 extends toward the outside of the storage space 101 to form an edge (for example, an edge Figure 7 104g, 104f), the edge constitutes the sealing surface of the drawer. Preferably, the sealing surface of the drawer body 104 is inclined downward from front to back along the depth direction Z of the storage chamber. This is conducive to avoiding the air duct structure at the rear side of the drawer.

[0109] Since the pressure difference between the inside and outside of the low-pressure storage unit 900 is large when it is working, the sealing surface of the drawer 100 is strengthened to facilitate the maintenance of the low-pressure environment. Preferably, the side edges 104f of the two side walls 104d extend downward to form a hollow cavity 109. The hollow cavity strengthens the sealing surface strength to facilitate the low-pressure maintenance of the low-pressure storage unit.

[0110] Furthermore, the hollow cavity 109 is configured to extend over the side edge 104f in the depth direction of the storage chamber. Thus, in combination with the reinforcement structure of the front wall 104a and the rear wall 104b, the drawer is helped to resist deformation in a low-pressure environment to maintain a reliable seal in the low-pressure environment.

[0111] Optionally, a reinforcement member 108 is provided in the hollow cavity 109 to further improve the strength of the sealing surface. In a specific embodiment, the material of the reinforcement member 108 is stronger than the material of the drawer body, for example, a metal member, and the reinforcement member is inserted into the hollow cavity 109 from the rear side of the drawer 100. The provision of the reinforcement member further facilitates the low pressure maintenance of the low pressure storage unit.

[0112] Further, see Appendix Fig.11 and 12 A limiting portion 121 is provided on the surrounding wall 109 a of the hollow cavity 109 , and a positioning protrusion 108 a that cooperates with the limiting portion 121 is provided on the reinforcement member 108 .

[0113] Further optionally, the limiting portion 121 is located at the rear end of the surrounding wall 109a, and a guide portion is provided on the inner wall surface near the entrance at the rear end of the hollow cavity 109. The positioning protrusion of the reinforcement is along the guide portion to cooperate with the limiting portion, which facilitates the assembly of the reinforcement and reduces the visual appearance of the reinforcement.

[0114] See attached Figure 7-8The left and right side walls 104d of the drawer body 104 are constructed with an extension portion 104e extending away from the storage space 101 on one side facing the front panel 103, and the extension portion 104e blocks the reinforcement portion 115 on the front wall 104a from both sides of the storage room width direction ±X.

[0115] Combined with Figure 4 The upper surface of the reinforcement portion 115 on the rear wall 104b of the drawer body 104 is inclined downward by 0.5-5 degrees relative to the bottom wall 104c of the drawer body 104. The downward inclination of the transverse rib 116 is conducive to the discharge of condensed water on the rear wall 104b.

[0116] Combined with Figure 3 A detection device matching portion 150 is provided below the hollow cavity 109, and the detection device matching portion 150 is located at the rear end of the drawer body 104. Correspondingly, along the depth direction Z of the storage chamber, the detection device mounting portion 1130 is provided at the rear side of the support body 500 and is opposite to the detection device matching portion 150. This is beneficial to reduce the visualization effect of the detection device and reduce the interference of the detection device by the outside world.

[0117] like Fig.11 As shown, the detection device matching portion 150 can be a slot with an opening toward the rear side, in which a magnet is installed. The detection device installation portion 1130 is formed as an installation box fixed on the inner tank, in which a magnetic detection device, such as a reed switch, is installed.

[0118] As attached Figure 4-6 As shown, the front panel 103 is connected to the drawer body 104 from the front side of the drawer body 104, and the front panel 103 covers the front surface of the drawer body 104 to form the front appearance of the drawer 100. It is beneficial to maintain visual unity with the storage units in other storage rooms.

[0119] In the height direction Y of the storage room, the top of the front panel 103 is higher than the cover 200 in the first position of the open state to form the front appearance surface of the low-pressure storage unit. In this way, when the drawer is pushed back, the front panel directly drives the cover to move, which is conducive to the accurate alignment of the drawer and the cover. In addition, when the low-pressure storage unit is in a closed state, it is difficult for the user to consciously touch the cover directly from the front side of the storage room, which is conducive to reducing the negative impact of the user's misoperation of the cover on the maintenance of the low-pressure environment.

[0120] There is an accommodation space 117 between the front panel 103 and the drawer body 104, and the accommodation space 117 provides installation space and operation space for the release mechanism 300. For example, the accommodation space can be located between the rear wall surface of the front panel 103 and the front wall 104a of the drawer body 104.

[0121] In one or more embodiments, in the width direction ±X of the low-pressure storage unit, there is an installation space and an operation space for accommodating at least part of the locking mechanism and / or the release mechanism between the side wall of the front panel 103 and the side wall 104d of the drawer body 104. This is beneficial to optimize the visual effect of the low-pressure storage unit while fully utilizing the storage space.

[0122] As attached Fig.10 As shown, the top of the front wall 104a is formed with a front edge 104g extending in a direction away from the storage space 101, and the front edge 104g is formed with a first buckle 118. The upper surrounding wall 120 of the accommodating space 117 is provided with a first slot 119 at a position corresponding to the front edge 104g, and the first buckle 118 is matched and connected with the first slot 119. Such a connection structure is conducive to the formation of the front sealing surface of the drawer body.

[0123] The low-pressure storage unit 900 has a charging passage 130 for fluidly connecting the storage space 101 with the outside to release the low-pressure state of the storage space 101 , and a pressure relief valve 700 for selectively opening or closing the charging passage 130 .

[0124] The gas-filling channel 130 is disposed on the front wall 104a of the drawer body 104. The outer end of the gas-filling channel 130 is in communication with the accommodating space 117. Through the gas-filling channel 130, the storage space 101 can be in communication with the external fluid, and external gas can enter the storage space 101 to release the low-pressure state of the storage space 101, thereby facilitating the drawer 100 to be pulled out. The gas-filling channel 130 can be provided with an elastic sealing seat to improve air tightness.

[0125] Combined with Figure 10-12 The inflation channel 130 protrudes along the front wall 104a toward the storage space 101, and one or more air inlet holes extending in different planes are formed on the protruding surface, which helps to prevent the air inlet holes from being blocked by flat objects and causing the inability to release pressure.

[0126] Combined with Figure 4 The length of the surface of the front edge 104g exposed to the outside of the front panel 103 along the depth direction Z of the storage chamber is at least greater than the thickness of the front wall of the cover 200. This is beneficial to the sealing between the cover 200 and the drawer 100.

[0127] like Fig. 9 As shown, a plug-in portion 122 is configured at the bottom of the front wall 104 a , and a slot 123 protruding toward the drawer body 104 is configured at corresponding positions of the bottom of the front panel 103 and the front wall 104 a , and the plug-in portion 122 is inserted into the slot 123 .

[0128] In a specific embodiment, along the depth direction Z of the storage chamber, the plug-in portion 122 is away from the front panel relative to the first buckle 118. This helps to provide operating space for the handle located at the lower side of the front panel.

[0129] Furthermore, a notch 110 may be provided on the extension portion 104e of the drawer side wall 104d, which is beneficial to further provide installation space for the release mechanism.

[0130] See attached Fig.10 A first limiting rib 124 is provided on the side of the front panel 103 facing the drawer body 104 , and the first limiting rib 124 at least abuts against the extension portion 104e of the drawer side wall 104d to further limit the position of the drawer body 104 extending into the front panel 103 .

[0131] When installing the front panel 103, first insert the plug-in portion 122 at the bottom of the front wall 104a of the drawer body 104 into the slot 123, and then insert the first buckle 118 at the top of the front wall 104a into the first slot 119 on the back of the front panel 103 to complete the assembly of the front panel 103.

[0132] from Figure 5 and Figure 6 As shown, the locking mechanism 400 includes a first matching portion 401 located on both sides of the drawer 100 and a second matching portion 402 located in the storage chamber 1100 and engaged and locked with the first matching portion 401. When the drawer 100 is pushed back into the storage chamber 1100, the first matching portion 401 on the drawer 100 and the second matching portion 402 in the storage chamber are engaged and locked under the action of the pushing force.

[0133] It can be understood that in the present invention, one of the first matching part 401 or the second matching part 402 is a movable part, and the other is a fixed part to perform the locking function. Therefore, when the storage unit is pushed back to the locked state, the end of the movable part close to the release mechanism moves in a direction away from the release mechanism and is decoupled from the release mechanism. That is, it can be understood that the release mechanism is relatively stationary relative to the storage unit in the non-operating state, so as to reduce the adverse effects of the release mechanism on the visual expression or operation steps of the storage unit or the safety of the user.

[0134] In a specific embodiment, in combination Figure 8 As shown, the first matching portion 401 is pivotally connected to the drawer body 104 via the second rotation axis b, one end of which is a locking end 403 and the other end of which is a driving end 404 .

[0135] In a specific embodiment, the locking end 403 and the driving end 404 are located on different sides of the second rotation axis b. For example, the first matching portion 401 is L-shaped, the locking end 403 is located at the free end of the long side of the L-shape, the driving end 404 is located at the free end of the short side of the L-shape, and the second rotation axis b is located at the intersection of the long and short sides. This is conducive to the locking mechanism 400 being driven to perform the locking operation.

[0136] As attached Fig. 9 As shown, the first matching portion 401 includes a main body 412 , a driving end 404 is arranged on the lower side of the main body 412 , and a locking end 403 is constructed as a locking protrusion 406 protruding from a side of the main body 412 away from the drawer 100 toward the second matching portion 402 .

[0137] Furthermore, a roller 407 is sleeved on the locking protrusion 406, and the roller 407 rolls on the inclined surface 409 and falls into the locking portion 410. This is conducive to improving the feel of pushing the drawer to lock. The roller can be rotatably mounted on the locking protrusion 406 by a fastener 411.

[0138] The second matching portion 402 is a clamping portion 405 configured on the compartment side wall 1100a and / or the middle partition wall 1110. When the drawer 100 is in a locked state, the locking end 403 is clamped with the clamping portion 405, and when the drawer 100 is in an unlocked state, the locking end 403 is disengaged from the clamping portion 405.

[0139] Combined with Figure 6 As shown, in a specific embodiment, the clamping portion 405 is formed at the front end of the support body 500, and the front end of the support body 500 has a front opening 408 for the locking end 403 to enter.

[0140] The clamping portion 405 may include a front opening 408 located at the front side of the clamping portion 405 and a locking portion 410 communicated with the front opening 408. The locking end 403 enters the clamping portion 405 from the front opening 408 and is accommodated in the locking portion 410 to lock the drawer 100. The locking portion 410 may be configured as a groove structure.

[0141] The lower surface of the front opening 408 gradually extends backward to form an inclined surface 409 for the locking end 403 to move and rotate along the surface. After moving along the inclined surface 409 , the locking end 403 falls into the locking portion 410 of the clamping portion 405 .

[0142] The locking mechanism 400 includes a first retaining member 430 , and the first retaining member 430 is configured to maintain the first matching portion 401 in a matchable state opposite to the second matching portion 402 .

[0143] In a specific embodiment, the first retaining member 430 is configured to protrude from the drawer side wall 104 d to prevent the locking end 403 from moving away from the locking portion 405 .

[0144] Along the depth direction Z of the drawer, the first retaining member 430 makes the locking end 403 of the first matching portion 401 and the second rotation axis b on the same horizontal line, which is conducive to maintaining the locking state.

[0145] The first retaining member 430 enables the locking end 403 of the first matching portion 401 and the front opening 408 of the second matching portion 402 to overlap in the moving direction of the drawer 100 , so as to facilitate the matching between the first matching portion 401 and the second matching portion 402 .

[0146] In a specific embodiment, the first retaining member 430 is supported below the first matching portion 401. In this way, the first matching portion 401 can be self-retained on the supporting portion 430a.

[0147] The first matching portion 401 is supported to face the opening 408 of the clamping portion 405. Preferably, the center line of the locking end 403 is not higher than the highest point of the inclined surface 409, so that when the drawer is pushed back, the locking end 403 rotates away from the retaining member 430 to lock and hold with the clamping portion 405.

[0148] Furthermore, the first retaining member 430 includes a supporting portion 430a extending horizontally from the drawer side wall 104d and a vertical rib 430b extending from the drawer side wall 104d and supporting the supporting portion 430a, so as to provide a stable supporting force.

[0149] Furthermore, the supporting portion 430a protrudes from the outer side of the first matching portion 401 away from the drawer in the width direction X of the storage chamber. In this way, the possibility of the first matching portion being separated from the first retaining member is reduced.

[0150] As attached Figure 8 As shown, a first mounting seat 422 is provided on the drawer side wall 104d, and the second rotation axis b is fixedly connected to the first mounting seat 422 so that the first matching portion 401 can rotate around the second rotation axis b. For example, the second rotation axis is a bolt threadedly matched with the first mounting seat.

[0151] The first mounting seat 422 is located below the hollow cavity 109. When the first matching portion 401 is mounted on the first mounting seat 422, there is a gap between the first matching portion 401 and the surrounding wall 109a of the hollow cavity 109 in the width direction of the drawer. In this way, the first matching portion 401 is closer to the outer surface of the second matching portion 402 than the surrounding wall 109a, which is conducive to the reliability of the locking fit.

[0152] Furthermore, a first rib 413 is provided on one side of the main body 412 close to the drawer body 104 , and the first rib 413 is configured to extend from the first matching portion 401 toward the drawer body 104 , so as to reduce the possibility of the first matching portion 401 being disengaged from the clamping portion 405 .

[0153] The locking mechanism 400 includes a second retaining member 420, which is configured to cause the first matching portion 401 to tend to continuously abut against the first retaining member 430; when locking or unlocking the drawer 100, overcoming the force of the second retaining member 420 causes the first matching portion 401 to rotate to lock or unlock with the second matching portion 402.

[0154] Specifically, the second retaining member 420 is a second torsion spring 421, which is sleeved on the second rotating shaft b, and one end of which abuts against the first mounting seat 422, and the other end abuts against the first matching portion 401. It is worth noting that the second retaining member 420 can also be a tension spring, one end of which is connected to the first matching portion 401, and the other end is connected to the drawer 100.

[0155] like Figure 8 As shown, the mounting seat 422 is configured as a mounting column 422 a , and at least two ribs 422 b are disposed on the periphery of the mounting column 422 a , and at least one of the ribs 422 b is formed with a bent portion 423 to abut against the second torsion spring 421 .

[0156] A mounting hole 424 is provided on one side of the first matching portion 401 close to the first mounting seat 422 for plugging with one end of the second torsion spring 421 .

[0157] Furthermore, if Fig.12 As shown, the hollow cavity 109 does not exceed the side of the guide rib 105 in the width direction X of the storage chamber. A margin is provided for the installation of the locking mechanism and the support body to facilitate maximizing the volume of the drawer.

[0158] like Figure 7 and 8 As shown, the release mechanism 300 includes a handle 301 and a pair of cantilevers 302 supporting the handle 301 . The cantilever 302 includes a connecting portion 305 and a driving portion 306 . The connecting portion 305 is located at one end of the cantilever 302 and is fixedly connected to one end of the handle 301 . The driving portion 306 is located at the other end of the cantilever 302 .

[0159] A pair of cantilevers 302 are mounted on the drawer body 104 via a first rotation axis a. The first rotation axis a is rotatably mounted on the front wall 104 a of the drawer body 104 .

[0160] In a specific embodiment of the present application, the first rotation axis a is also accommodated in the notch 110 of the drawer body 104 to facilitate the installation of the rotation axis. In order to better install the first rotation axis a, one or more holders 126 that are adapted to the shape of the first rotation axis a can be provided on the front wall 104a, and / or one or more fixing seats 307 that are adapted to the shape of the first rotation axis a can be provided to fix the first rotation axis a on the front wall 104a.

[0161] like Figure 6 As shown, the driving part 306 and the driving end 404 can be selectively coupled to perform the unlocking operation in a linked manner. The driving part 306 and the driving end 404 at least partially overlap in the height direction Y of the storage chamber; the driving part 306 and the driving end 404 at least partially overlap in the width direction X of the storage chamber. That is, the driving part 306 and the driving end 404 at least partially overlap and oppose along the depth direction of the storage chamber, so that the driving part 306 drives the driving end 404 to perform the unlocking movement.

[0162] After a pair of cantilevers 302 are sleeved on the corresponding ends of the first rotation axis a, they are fixed on the first rotation axis a by a fixing device such as a screw so that they cannot be moved relative to the first rotation axis a. Therefore, when the user operates the handle 301, the pair of cantilevers 302 and the first rotation axis a are driven to rotate around the center line of the first rotation axis a, and the driving part 306 of the cantilever 302 drives the driving end 404 of the locking mechanism 400 to rotate around the second rotation axis b, thereby unlocking the locking end 403 and the clamping part 405.

[0163] The first rotating shaft a is sleeved with a pressure relief valve 700 for closing or opening the inflation channel 130 provided on the drawer body 104 to release the low pressure state of the storage space 101. Thus, the pressure relief valve 700 is provided in conjunction with the handle 301 to relieve pressure in the storage space.

[0164] When the release mechanism 300 is in a non-operating state, the pressure relief valve 700 maintains abutment and sealing with the inflation passage 130 .

[0165] The pressure relief valve 700 and the handle 301 can be accommodated in the accommodating space 117. It can be seen that the release mechanism will not significantly affect the volume and appearance of the low-pressure storage unit. Therefore, according to the present invention, a more compact and simple storage unit is obtained.

[0166] Combination Figure 7 and Fig.10 The pressure relief valve 700 includes a valve seat 701 and a closure member 702, wherein the closure member 702 is detachably mounted on the valve seat 701 and can be sealed with the inflation channel 130. In particular, the closure member 702 is a rubber member, which is clamped on the valve seat 701 to facilitate replacement of the closure member 702.

[0167] In order to enable the pressure relief valve 700 to better maintain the sealing of the inflation channel 130 , a third retaining member is provided to provide a retaining force for the pressure relief valve 700 to block the inflation channel 130 .

[0168] Specifically, the retaining mechanism 309 is configured as a first torsion spring 310 , which is sleeved on the first rotating shaft a, one end of which is connected to the pressure relief valve 700 , and the other end of which is connected to the drawer body 104 or a fixed portion fixed to the drawer body 104 .

[0169] Furthermore, an upper limit structure is provided on one side of the upper end of the valve seat 701 close to the drawer body 104, and the upper limit structure extends from the upper end of the valve seat 701 and forms an inclined surface that gradually moves away from the drawer body. Thus, when the handle 301 is manipulated outward, the inclined surface of the upper limit structure contacts the drawer body, thereby preventing the handle from further rotating outward, so as to prevent the cantilever 302 and the front panel 103 from forming an angle that pinches the hand.

[0170] Furthermore, the lower portion of the valve seat 701 extends toward the drawer body 104 to form a lower limit structure, which limits the position of the handle 301 relative to the front panel 103. This is beneficial for keeping the handle 301 and the front panel 103 on the same plane to improve the visual expression of the storage unit.

[0171] Specifically, the driving portion 306 is closer to the first rotation axis a than the connecting portion 305. This is conducive to performing pressure relief and unlocking operations with less effort.

[0172] like Figure 3 and 7 As shown, a handle groove 113 recessed toward the drawer body 104 is provided at the lower portion of the front panel 103 . The handle groove 113 extends along the width direction of the front panel 103 to accommodate the handle 301 of the release mechanism 300 . The handle 301 is accommodated in the handle groove 113 .

[0173] The accommodating spaces 117 and the handle grooves 113 are distributed up and down along the height direction Y of the storage chamber, so as to facilitate a compact structure of the storage unit.

[0174] In the non-operating state, the handle 301 is accommodated in the handle groove and remains stationary. That is, in the non-operating state, the handle remains substantially within the front surface of the front panel 103. This helps prevent the handle from moving unnecessarily when not operated by the user, thereby preventing the user from damaging the visual integrity or bringing possible safety risks.

[0175] In a specific embodiment, the handle 301 is supported in the handle groove 113 only by the cantilever 302, and is substantially flush with the front surface of the front panel 103. An operation opening for a hand to enter is formed between the handle 301 and the handle groove 113, that is, a gripping space 303 for grasping the handle 301 is formed between the rear surface of the handle 301 and the bottom surface 114 of the handle groove 113.

[0176] Furthermore, a limiting protrusion is provided on one side of the valve seat 701 facing the drawer body 104 , for limiting the position of the release mechanism 300 , so as to facilitate the handle 301 to be substantially flush with the front surface of the front panel 103 .

[0177] Handle mounting holes 112 are provided in the areas adjacent to both ends of the handle groove 113 on the front panel 103 , so that the cantilever 302 of the release mechanism 300 can pass through the handle mounting holes 112 to support the handle 301 on the front surface of the drawer 100 .

[0178] The size of the front panel 103 in the drawer width direction is larger than the size of the front surface of the drawer body 104 , and the cantilever 302 and the first matching portion 401 are located between the side surface of the front panel 103 and the side surface of the drawer body 104 .

[0179] In this way, not only can the handle serve as a decorative part of the front panel, but the other components of the release mechanism and the first mating part are basically invisible when observed from the front of the low-pressure storage device when the handle is not pulled out, thereby minimizing the impact of the release mechanism on the appearance of the drawer; therefore, according to the present invention, it is expected to obtain a more compact and simple-looking storage unit.

[0180] In one or more embodiments, the front surface of the front panel 103 is provided with a decorative plate 111, which can be glass, leather or metal. Preferably, the decorative plate 111 is flush with the periphery of the front panel 103 when serving as the appearance surface of the front panel.

[0181] Fig.13 Shows Figure 3 A three-dimensional exploded view of the cover shown; Fig.14 Shows Fig.13 A top view of the cover body shown; Fig.15 Shows Fig.13 A bottom view of the cover body shown, Fig.16 Shows Fig.15 A magnified image of the D area in the middle. Fig.17 Shows Fig.13 A three-dimensional view of the upper cover shown.

[0182] like Figure 3-4As shown in FIGS. 13-15 , the cover 200 is provided with a receiving cavity 204 for receiving the suction assembly 800. The suction assembly 800 is received in the receiving cavity 204 and partially protrudes from the main plane of the cover 200. This is beneficial to minimize the occupation of storage space while satisfying the strength of the cover.

[0183] The accommodating chamber 204 is provided with a gas passage 210 connected to the storage space 101, and the suction assembly 800 is connected to the gas passage 210 to suck the gas in the storage space 101. The gas passage 210 is provided in the accommodating chamber 204 to facilitate eliminating the passage obstruction or failure caused by squeezing or accidents.

[0184] In one or more specific embodiments, the gas channel 210 is integrally formed on the cover body, which is beneficial to the sealing of the gas channel and the arrangement of the pipelines.

[0185] Optionally, the gas channel 210 is formed as a tube 210a extending from the wall of the accommodating chamber 204, the tube 210a protrudes from the wall of the accommodating chamber 204, and its end is opposite to the suction port 803 of the suction pump 801, so as to facilitate the connection with the suction port of the suction pump 801 with as little air resistance as possible.

[0186] In one embodiment of the present application, the tube 210 a is preferably formed as a curved tube extending from the bottom surface 205 a of the accommodating chamber 204 .

[0187] The gas channel 210 is formed as a hole on one side of the cover body 200 facing the opening 102, and a partial area depression 210b is formed around the hole, and the depression 210b is connected to the hole. For example, a cross-shaped depression is formed around the hole. The local depression is helpful to prevent the air hole from being blocked by a flat object and causing suction failure.

[0188] The cover 200 includes a limiting portion to limit the displacement of the drawer 100 relative to the cover in the ±X direction of the width of the low-pressure storage unit when the drawer 100 is pushed back to the storage chamber 1100. In one or more embodiments, the limiting portion is configured as a side edge 203 extending toward the drawer 100 on both sides of the cover 200. In the first position where the cover 200 is separated from the opening 102, the side edge 203 is located outside the side wall 104d and at least partially overlaps with the side wall 104d in the height direction of the storage chamber. For example, it partially overlaps with the surrounding wall 109a. In this way, the side edge 203 effectively limits the displacement of the drawer 100 relative to the cover 200 in the left and right directions when the drawer 100 is pushed back.

[0189] Furthermore, in one or more embodiments, the side edge 203 at least exceeds the bottom surface 220a of the sealing member 220, which is helpful to limit the accuracy of the cover body and the drawer 100 in the closing position.

[0190] Furthermore, combined with Figure 7 and attached Fig.16 The side edge 203 is provided with a second rib 140 on the outer surface of the surrounding wall 109a corresponding to the drawer and / or a third rib 240 is provided on the inner surface of the side edge 203 to limit the drawer 100. In this way, when the drawer is pushed back, the cover body and the drawer are relatively offset as little as possible to seal and cover. In particular, the second rib 140 is located at the front end of the surrounding wall 109a, and the third rib 240 is located at the rear end of the side edge 203.

[0191] like Fig.15 As shown, a seal installation groove 225 for installing the seal 220 is provided on the lower surface of the cover body 200 , and a gap is formed between the seal installation groove 225 and the side 203 to provide space for the compression deformation of the seal 220 .

[0192] The cover body 200 is formed with at least two support shafts that cooperate with the support body 500. Fig.13 The first support shaft 201 and the second support shaft 202 are arranged on the side 203, and the axis of the two support shafts is located on the side 203 at a position not higher than the bottom surface of the seal installation groove 225. In this way, it is beneficial to set the installation position of the support body 500 lower than the upper surface of the cover body 200. In the second position of the sealed closed opening 102, the upper surface of the cover body 200 is higher than the upper surface of the support body 500. It is beneficial to reduce the installation space that the low-pressure storage unit must occupy as a whole, especially when the low-pressure storage unit is arranged close to the top wall or beam of the storage room.

[0193] A notch 218 is provided in the area of ​​the side edge 203 near the front end 200c of the cover 200, which is used to avoid the movement path of the first matching portion 401 when the drawer 100 and the cover 200 are pushed back and sealed. Moreover, in this embodiment, the notch 218 is preferably a curved surface.

[0194] In a specific embodiment of the present application, the sealing surface of the cover 200 closing the opening 102 is inclined downward from front to back along the depth direction Z of the storage chamber, and the accommodating cavity 204 can be arranged adjacent to the rear end of the cover 200. In this way, it is beneficial to fully utilize the space on the upper side of the drawer opening with the inclined sealing surface.

[0195] like Figure 4 As shown, the receiving groove 204 is formed as a groove 205 with an upward opening on the cover 200, and the bottom surface 205a of the groove 205 is lower than the bottom surface of other areas within the cover seal installation groove. It is beneficial to form a groove with a maximum depth on the cover to accommodate the suction pump 801 in the suction assembly 800.

[0196] When the cover 200 is in a state of closing the opening 102, the bottom surface 205a of the groove 205 is not lower than the plane where the opening 102 of the drawer 100 at the corresponding position is located, so as to minimize the influence of the cover on the storage volume of the drawer.

[0197] The suction assembly 800 includes a suction pump 801 and a gas pipeline 802 connecting the suction pump 801 to the gas channel 210. The suction pump 801 is disposed on a side of the receiving groove 204 that is relatively closer to the side edge 203. In this way, it is convenient to lay the power supply line of the suction pump 801. For example, Fig.13 As shown, a wire binding portion 229 or a wire clip 228 is provided on the upper surface of the cover body adjacent to the side plate 203 .

[0198] The suction pump 801 includes a suction port 803 and an exhaust port 804. A one-way valve 803 is provided in the gas pipeline 802 connecting the suction port 803 and the gas channel 210 to facilitate the pressure maintenance of the storage space 101. The gas pipeline 802 is preferably a hose to facilitate the sealed connection with the gas channel.

[0199] In a preferred embodiment, the groove 205 can be divided into a suction pump installation area and a gas channel connection area. Along the depth direction of the storage chamber, the length of the gas channel connection area is greater than the length of the suction pump installation area. Such a design is conducive to the molding of the gas channel. Among them, the size of the suction pump installation area can match the suction pump to facilitate the fixation of the suction pump.

[0200] A heating device 217 is provided in the accommodating cavity 204 of the cover body 200 to prevent the gas pipeline in the accommodating cavity 204 from being blocked due to freezing of condensed water. Furthermore, in order to prevent the heating device 217 from having an adverse effect on the suction pump 801 when it is working, the heating device 217 is located below the gas pipeline 802 and is laid out away from the suction pump 801. For example, an avoidance hole 234 is provided on the heating device 217.

[0201] Preferably, a second limiting rib 237 is provided in the suction pump installation area to limit the heating device 217 and the suction pump 801 .

[0202] The second limiting rib 237 cooperates with the avoidance hole 234 to facilitate the installation and positioning of the heating device 217. Further, the second limiting rib 237 may be provided with a protrusion to cooperate with the wall surface of the suction pump installation area to limit the displacement of the suction pump along its center line direction.

[0203] The cover body 20 is also provided with a connector mounting portion 230 for providing pipeline connection of functional units, for example, circuit connection of the suction assembly 800 or the heating device 217 included in one or more embodiments of the present application. For example, the connector mounting portion 230 is configured as a mounting groove that shares at least one wall surface with the groove 205, and at least one connector 236 is disposed in the mounting groove and electrically connected to the suction assembly 800 or the heating device 217. Furthermore, a pipeline channel is provided on the shared wall surface.

[0204] The upper surface 200a and the lower surface 200b of the cover body 200 are provided with reinforcement structures. The cover body 200 is provided with at least three reinforcement structures with different reinforcement strengths. Figure 14-15 As shown in the figure, the cover body 200 is constructed with reinforcement structures of different reinforcement strengths, such as a lattice-shaped first reinforcement structure 206, a wave-shaped second reinforcement structure 207, and a hexagonal fourth reinforcement structure 209a, so as to facilitate the overall reinforcement of the cover body strength.

[0205] At least two different reinforcement structures are superimposed on the middle part of the cover body 200. Fig.14 and 15 The first reinforcement structure 206 and the circular groove 226 and the hexagonal reinforcement structure.

[0206] In one or more embodiments, the middle portion of the cover body 200 includes at least a wavy second reinforcement structure 207. By stacking reinforcement structures or designing wavy reinforcement structures, the overall wall thickness of the cover body can be reduced while meeting the strength requirements of the cover body.

[0207] See attached Fig.13 The cover body 200 may include a cover body 20 and an upper cover 21 , the upper cover 21 is covered on the cover body 20 , and the suction pump 801 is fixed between the cover body 20 and the upper cover 21 .

[0208] In one embodiment, the bearing strength of the cover body 20 is greater than the bearing strength of the upper cover 21. The cover body 20 provides the main support force of the cover under low pressure environment, therefore, preferably, the reinforcement structure is disposed on the cover body 20.

[0209] The upper surface 200a of the cover body 20 includes a smooth surface 216 extending along the width direction of the cover body 200, and the smooth surface 216 serves as a part of the appearance surface of the cover body 200. Therefore, when the cover body is installed in the storage room, it is beneficial to provide a visible surface with an integrated visual effect.

[0210] The reinforcement structure extends over the projection area formed by the cover 200 along the height direction Y of the storage chamber. Figure 14-15 As shown in , preferably, at least one reinforcement structure is integrally formed below the smooth surface 216 to enhance the local strength of the cover, for example, the third reinforcement structure 208 .

[0211] like Figure 4 As shown, the plane 216 is formed by the second reinforcement structure 207 extending upward obliquely. This is beneficial to minimize the overall thickness of the cover while ensuring strength.

[0212] A plurality of reinforcing structures 209a, 209b, 209c are provided on the surrounding wall of the groove 205. Fig.15As shown, at least two reinforcement structures are superimposed on at least a portion of the area around the groove 205, which is beneficial to ensure the overall strength of the cover body.

[0213] like Figure 4 As shown, the upper cover 21 can cover the first reinforcing structure 206 on the upper surface 200a of the cover body 20, and the main plane of the upper cover 21 is substantially flush with the smooth surface 216. In this way, the cover body provides a better visual experience to the user. In this embodiment, a buckle 211 is provided on the edge of the upper cover 21, and the upper cover 21 is buckled with the buckle hole 233 of the cover body 20 through the buckle 211. Of course, the upper cover can also be fixed to the cover body by other methods that do not affect the strength of the cover body and the airtightness of the cover body.

[0214] A positioning portion 215 may be provided on the upper cover 21, and the positioning portion 215 is used to fix at least part of the suction assembly 800 relative to the upper cover 21; for example: a concave surface 232 adapted to the shape of the suction pump 801 is provided on the upper cover 21, and the suction pump 801 is clamped between the concave surface 232 and the cover body 20; wherein the concave surface 232 is formed as a convex portion 221, protruding from the main surface of the upper cover 21.

[0215] The upper cover 21 may form a pair of plug plates 214 at positions corresponding to the suction pump 801 , with an opposing distance matching the diameter of the suction pump 801 , and the plug plates 214 limit radial displacement of the suction pump 801 .

[0216] like Fig.13 and Fig.16 As shown, a buckle is provided on the plug plate 214 to connect with a buckle hole on the wall surface 205b of the groove 205. The limit and fixation close to the suction pump are conducive to reducing the vibration and noise generated by the suction pump 801 during operation.

[0217] Optionally, the upper cover 21 is provided with a wiring hole 235 corresponding to the connector mounting portion 230, and the wiring hole 235 is provided with a mounting cover 231 detachably connected to the wiring hole 235. In a preferred embodiment, the connector mounting portion 230 is disposed closer to the side edge 203 than the groove 205, which is conducive to the laying and connection of the line.

[0218] A flexible sleeve is provided on the outside of the suction pump 801 of the suction assembly 800. When the upper cover 21 is placed on the cover body 20, the flexible sleeve can be deformed so that the suction pump 801 is tightly clamped in the positioning portion 215, which is helpful to reduce the vibration and noise generated by the suction pump 801 during operation.

[0219] The cover 200 is provided with a guiding structure for guiding the circulating air in the storage chamber 1100. In particular, when the air outlet of the storage chamber is located at the rear side of the low-pressure storage unit 900, the guiding structure comprises a first inclined surface 213, which is located at the rear end 200d of the cover 200 and is inclined downward from the front to the rear along the depth direction of the storage chamber, so as to guide the air flowing out of the air outlet to enter the air duct between the cover and the upper shelf along the first inclined surface.

[0220] The guide structure further includes a guide rib 222 on the convex portion 221 to prevent the wind from forming a vortex in front of the convex portion 221 and facilitating the formation of condensed water. In this embodiment, the guide rib 222 is preferably in the shape of a shark fin.

[0221] Even, in order to maximize the storage space without affecting the flow of circulating air, the rear end 200d of the cover body 200 can be provided with a long groove 219 to avoid the air outlet in the storage room. For example, the long groove 219 can be formed by the first groove 219a on the cover body 20 and the second groove 219b on the upper cover 21.

[0222] Furthermore, in order to improve the strength of the long groove 219 area, a vertical rib 233 is provided in a corresponding area of ​​the rear end surface of the cover body.

[0223] In order to prevent condensation from gathering inside the cover 200, a drainage hole 224 is provided on the cover body 20, wherein the drainage hole 224 is located on the side of the cover body 20 and communicates with the inside of the cover body 20. It is preferably communicated with the connector mounting portion 230 to reduce the impact of condensation on electrical components.

[0224] Next, combine with Figure 18-22 Take the support as an example to explain the support in detail. Fig.18 and 19 Shows Figure 3 3D exploded views of the support body at different angles on the middle right; Fig. 20 Shows Figure 3 The movement process of the cover installation in the structure shown; wherein S1 shows the state of the second support shaft being installed in the second channel; S2 shows the state of the first support shaft being installed in the first channel; S3 is the state when the cover is in the second position and closed; S4 is the state when the cover is in the first position and opened; Fig.21 Shows Figure 3 A front view of the middle right support body when the cover body is not installed; Fig. 22 Shown along Fig.21 Cross-sectional view of a cutaway support.

[0225] The support body 500 can be fixed to the side wall 1100a of the chamber by bolts. For example, at least one ( Fig.19In the embodiment, three countersunk holes 515 are used as an example. When installing, the support body 500 is screwed to the side wall 1100a of the chamber through the countersunk holes 515. Of course, the support body 500 can also be fixed to the side wall 1100a of the chamber by other methods such as bonding, clamping, etc.

[0226] Along the depth direction Z of the storage chamber, at least two positioning members 527 are provided on the support body 500 to cooperate with the positioning recesses on the compartment sidewall 1100a or the middle partition wall 1110. This is conducive to accurately installing the support body 500 on the compartment sidewall 1100a or the middle partition wall 1110.

[0227] The support body 500 includes a first opening 503 and a second opening 504 arranged front and rear along the depth direction of the storage chamber 1100, the first opening 503 opens downward, and the second opening 504 opens upward. The cover body 200 mounts the first support shaft 201 and the second support shaft 202 on the support body 500 through the first opening 503 and the second opening 504, respectively.

[0228] In this way, when assembling the storage unit in the storage room, the front and rear ends of the cover body are installed into the support body from the top and bottom of the support body respectively, which is more conducive to reducing the requirement for installation space above or below the support body compared to completely installing it from the top or bottom.

[0229] Along the depth direction Z of the drawer, the lengths of the first opening 503 and the second opening 504 are slightly larger than the diameters of the first support shaft and the second support shaft, which is beneficial for the cover to be retained in the support body.

[0230] Therefore, if Fig. 20 As shown in S1 and S2, two states of the installation process of the cover 200 are shown. In the initial installation state S1, along the depth direction Z of the drawer 100, the rear end of the cover 200 is located above the support 500, and the front end is located below the support 500 and is obliquely installed into the support 500. In this way, the upper part of the front end of the cover provides an operable space for the disassembly and assembly of functional units or various pipelines, and the rear end of the cover provides a stable support for the installation operation; it is conducive to reducing the complexity of the disassembly and assembly operation and the length of the connection line.

[0231] It is worth noting that although the functional unit in one or more specific embodiments of the present application is a suction assembly 800, the functional unit in an actual storage unit is not limited to a suction assembly, but may also be other detachable related components installed to provide lighting or specific gas or specific temperature environment.

[0232] After installation, the cover body 200 is horizontally supported on the support body 500 relative to the drawer 100. In order to cover the drawer, the relatively horizontal cover body is conducive to saving storage space.

[0233] In particular, the upper part of the cover 200 is a top wall or a beam of the storage room. The matching structure of the cover and the support body is obviously conducive to reducing the storage space that must be occupied due to installation, so that the storage unit can be closer to the top wall or beam structure of the storage room.

[0234] When the upper part of the cover 200 is configured as the top wall or beam of the storage room, in the second position of closing the opening, the upper surface of the cover is higher than the upper surface of the support. When the cover is installed close to the top wall or beam, the cover is higher than the support, which helps to avoid the loss of storage space caused by the support being unable to be installed at the fillet connecting the top wall or beam and the side wall.

[0235] like Fig.18 and 19 As shown, a pre-installation portion 514 is provided on the upper surface of the support body 500. When the cover body 200 is assembled, the second support shaft 202 is at least partially accommodated in the pre-installation portion 514 supporting the rear end of the cover body to facilitate the assembly of the functional units on the cover body or the connection of various pipelines. In a specific embodiment, the pre-installation portion 514 is closer to the front end of the support body 500 relative to the second opening portion 504. In this way, after the operation is completed, the second support shaft 202 of the cover body leaves the pre-installation portion 514 and is pushed into the second opening portion 504 along the upper surface of the support body 500 to achieve the installation of the cover body, which is conducive to improving the efficiency of assembly.

[0236] Fig. 20 S3 and S4 respectively show that the support body 500 includes a first channel 501 and a second channel 502 spaced apart from each other in the depth direction Z of the storage chamber, and the first channel 501 and the second channel 502 are at least partially inclined to provide a movement path for the cover body 200 to move from the first position to the second position, and the first position is higher than the second position. It can be understood here that the first channel 501 and the second channel 502 can be two parts of a channel separated by a partition, or can be two channels that are not connected to each other and are integrally formed with the support body.

[0237] The first support shaft 201 and the second support shaft 202 are respectively restricted in the first channel 501 and the second channel 502 to perform the opening and closing operations of the cover body. In this way, the cover body will not be separated from the support body during the opening and closing movement due to accidental touch.

[0238] The first channel 501 has a first end 501a and a second end 501b opposite to each other along the drawer depth direction Z, the second channel 502 has a third end 502a and a fourth end 502b opposite to each other along the drawer depth direction Z, the first opening 503 is arranged at the second end 501b, and the second opening 504 is arranged at the third end 502a. In this way, the first support shaft and the second support shaft cannot be in the opening of the channel at the same time, which is conducive to the channel holding the support shaft.

[0239] When installing the cover body 200, the rear second support shaft 202 first enters the first channel through the second opening 504, and then pushes the cover body to move backward along the second channel 502 for a certain distance until the front first support shaft 201 reaches the first opening 503 and enters the first channel 501, thereby keeping the cover body 200 on the support body 500.

[0240] When removing the cover 200, the cover 200 is pushed to move backward for a certain distance until the first support shaft 201 at the front reaches the first opening 503 and is separated from the first channel 501 under the action of gravity, and the cover 200 is moved forward for a certain distance until the second support shaft 202 at the rear reaches the second opening 501, and then the cover 200 is taken out. In this way, the user can disassemble and assemble the cover with less effort, and it is also convenient for disassembling and assembling the functional units or various pipelines on the cover, saving storage space.

[0241] Along the depth direction Z of the storage chamber, the first distance between the first support shaft 201 and the second support shaft 202 is greater than the second distance between the first opening 503 and the second opening 504. This helps to prevent the support shafts from escaping from the openings at the same time.

[0242] The first movement stroke L1 of the cover 200 from the first position to the first opening 503 along the first passage 501 is greater than the second movement stroke L2 of the cover 200 from the first position to the second position along the first passage 501. Therefore, it is convenient for the support shaft to escape from the opening during the movement.

[0243] The first end 501a has a stop surface, and the distance D2 between the stop surface and the third end 502a is smaller than the distance D1 between the first support shaft 201 and the second support shaft 202, and in particular, the difference between D1 and D2 is not smaller than the radius of the first support shaft. In this way, the possibility of the second support shaft 202 escaping from the second opening 504 is reduced when the cover is in the first position.

[0244] The stop surface may be configured as the inner surface of the first end 501a, or may be configured as a stopper 523 fixed to the first end 501a. In a specific embodiment, the stopper 523 is at least partially accommodated in the first channel 501 to stop the first support shaft 201.

[0245] Furthermore, the stopper 523 can be made of elastic material, such as rubber. Thus, when the first support shaft 201 moves to the first end 501a, it hits the elastic stopper 523, which is helpful to reduce the noise generated by the collision when the cover body 200 moves to the first position.

[0246] Furthermore, a stopper mounting hole 524 for mounting the stopper 523 is provided at the first end 501 a of the first channel 501 , and the stopper 523 is mounted in the first channel 501 through the stopper mounting hole 524 .

[0247] like Fig.18 As shown, the first channel 501 and the second channel 502 include an upper wall surface, and the upper wall surface defines a movement path of the cover body 200 from the first position to the second position. That is, when the cover body 200 moves from the first position to the second position, there is force contact between the upper wall surfaces of the first channel 501 and the second channel 502 and the two support shafts.

[0248] When the cover 200 is in the second position to close the opening of the drawer 100, the support 500 applies a force to the cover to maintain the sealing member 220 in sealing contact with the edge of the opening of the drawer 100. Fig. 20 As shown in S3, in the second position of the cover body closed position, the upper wall of the first channel 501 and the second channel 502 exerts a downward force on the cover body.

[0249] The first channel 501 may include a first inclined section 506 extending downwardly along the drawer depth direction Z, and the second channel 502 may include a second inclined section 509 extending downwardly along the drawer depth direction Z, and the front end height H1 of the first inclined section 506 and the second inclined section 509 is less than the rear end height H2 thereof, wherein H1 is slightly larger than the diameter of the support shaft. In this way, when the cover is in the drawer closed state, after the suction assembly 800 is in operation, the cover 200 has a tendency to move downward under the influence of negative pressure, and this tendency to move downward may affect the sealing of the low-pressure storage unit or generate a large pressure on the support body, causing the inner wall or the middle partition wall to deform. Therefore, when H2 is greater than H1, there is space for the cover to move downward after closing, and space is reserved for the downward movement of the cover and the compression deformation of the seal. The cover can be tightly covered on the drawer under negative pressure to improve the sealing retention, and at the same time, the cover is supported on the drawer without generating excessive pressure on the support body, thereby reducing the possibility of deformation of the inner wall or the middle partition wall.

[0250] Further, the first channel 501 may include a first horizontal section 505 and a second horizontal section 507 extending horizontally from both ends of the first inclined section 506, and a third horizontal section 508 and a second horizontal section 510 extending horizontally from both ends of the second inclined section 509. In the first position, the cover 200 is supported by the first horizontal section 505 and the third horizontal section 508, and in the second position, the cover 200 is supported by the second horizontal section 507 and the fourth horizontal section 510. The horizontal sections are conducive to forming a more stable support and retention for the cover in the first position and the second position.

[0251] In a specific embodiment, Figure 18-19As shown, a stopper 517 is provided in the area where the second end 501b of the first channel 501 communicates with the first opening 503. The stopper is helpful to prevent the cover from falling from the first opening when it accidentally slides to the first opening. Preferably, the stopper 517 is configured as an elastic arm extending from the side wall of the first channel 501 from bottom to top.

[0252] Furthermore, a through hole 518 corresponding to the position of the stopper 517 is provided on the upper surface of the first channel 501, so as to facilitate the operator to remove the cover body by using tools.

[0253] Furthermore, the fourth end 502b of the second channel 502 is provided with an anti-impact portion 516, which prevents excessive external force from breaking the elastic arm-type stopper 517. Preferably, the anti-impact portion 516 is configured as a convex bump formed from the lower wall of the second channel 502, and the convex bump is located at the rear side of the second channel 502 position where the second support shaft 202 is located when the cover body 200 is in the second position, and is located at the front side of the second channel 502 position where the second support shaft 202 is located when the first support shaft 201 moves from the second position to the first opening position 503.

[0254] The first support shaft 201 and the second support shaft 202 may be sleeved with a first sliding member 201a and a second sliding member 201b, respectively. When the cover 200 is supported on the support 500, the sliding members 201 and 201b are in direct contact with the first channel 501 and the second channel 502, respectively, and slide back and forth therein (i.e., slide along the ±Z direction). The movement effect of the cover in the support is optimized and the lubrication coefficient is improved.

[0255] Specifically, the first sliding member 201a and the second sliding member 202a can be plastic sleeves with better lubrication effect than the cover material, providing a better sliding experience.

[0256] The low-pressure storage unit may include a force applying mechanism 511 adapted to provide a holding force for holding the cover 200 at the first position.

[0257] The force applying mechanism 511 may be disposed at the rear end of the cover body 200 , or may be disposed inside the support body 500 or between the support body 500 and the cover body 200 , and may provide a pulling force or a pushing force to the cover body.

[0258] In a preferred embodiment, the force applying mechanism 511 is hidden in the cavity 533 of the support body 500 and applies a retaining force to the cover body 200. When the drawer 100 is placed in the storage chamber 1100, the cover body 200 abuts against the drawer under the action of the retaining force. When the drawer is pulled out of the storage chamber, the cover body moves from the second position to the first position under the action of the retaining force.

[0259] When the drawer 100 is pulled out of the storage chamber, the cover 200 stops at the stop surface of the first channel 501 and is held at the first position by the holding force of the force-applying mechanism 511 .

[0260] When the drawer 100 is pushed into the storage chamber, the thrust overcomes the holding force of the force-applying mechanism 511 , and the drawer 100 is held at the second position under the locking of the locking mechanism 400 .

[0261] Further, the force applying mechanism 511 includes a sliding member 512 and a spring 513, wherein the sliding member 512 is used to connect the cover body 200 and can slide back and forth in the support body 500; the spring 513 has a fifth end 513a and a sixth end 513b opposite to each other, wherein the fifth end 513a is fixed to the support body 500, and the sixth end 513b is connected to the sliding member 512. For example, a first spring fixing portion 530 is provided on the support body 500, and the first spring fixing portion 530 is located in the cavity 533 of the support body.

[0262] In one or more embodiments, the spring 513 is preferably a tension spring, which is fixed in front of the second channel 502 and continuously provides tension to the sliding member 512. With this design, the downward force provided by the support body to the cover is closer to the rear end to facilitate the reliability of the cover sealing.

[0263] Furthermore, the sliding member 512 has a receiving groove 519 for receiving the second support shaft 202. When the cover body is not installed, in the height direction Y of the storage chamber, the projection of the receiving groove 519 covers the second opening portion 504, and the receiving groove 519 is connected to the second opening portion 504; and / or when the cover body 200 is in the first position, the receiving groove 519 partially overlaps with the first opening portion 503 so that the second support shaft 202 cannot be detached from the second opening portion 504.

[0264] The support body 500 is provided with a stopper 529 for limiting the sliding member 512 . The stopper 529 enables the receiving groove 519 to match the position of the second opening 504 when the cover body is not installed, so as to facilitate the installation of the second support shaft 202 .

[0265] In one or more embodiments, the stopper installation hole 524 is communicated with the cavity 533 of the support body 500 , and the stopper 523 may be partially received in the cavity 533 , so as to facilitate the visual expression of the appearance of the support body 500 .

[0266] Preferably, the support body 500 is provided with a convex strip 528 for forming an internal slideway of the support body 500 corresponding to the position of the second channel 502, and the upper and lower ends of the sliding member 512 are provided with grooves 531 to facilitate the matching installation with the convex strip 528 and prevent the sliding member 512 from shaking too much in the support body 500.

[0267] The sliding member 512 is provided with a second spring fixing portion 520, which is located in the middle of the side wall of the sliding member 512, so that the tension spring can provide a sufficiently large pulling force to the sliding member to maintain the position of the cover body.

[0268] A vertical rib 522 extends from the upper surface of the rear end of the support body 500 toward the side wall 1100 a of the storage chamber 1100 in the depth direction of the storage chamber to form a reinforcement for the rear end of the support body 500 .

[0269] Refer to the attached Figure 21-22 A stopper protrusion 521 extending toward the outer side of the second channel is provided on the side wall of the sliding member 512 opposite to the second spring fixing portion 520 , which helps to prevent the second support shaft 202 from escaping from the sliding member 512 .

[0270] In one or more embodiments, the second matching portion 402 is integrally formed at the front end of the support body 500 to facilitate a compact design and a modular design of the storage unit.

[0271] The first channel 501 and the second matching portion 402 are located at the front end of the support body 500 and are distributed vertically. In particular, at least part of the lower wall of the first channel 501 serves as a partition wall between the first channel 501 and the second matching portion 402. Such a design is conducive to the compact structure of the storage unit.

[0272] A pipeline cover 525 extending downward is configured in the middle of the support body 500 , and the pipeline cover 525 cooperates with the pipeline connecting portion 1140 to shield the pipeline connecting portion 1140 .

[0273] In order to better lay the pipeline, a first wiring channel 526 for limiting the pipeline path is provided on the upper surface of the support body 500. Accordingly, the area where the support body 500 extends to form a pipeline cover forms a second wiring channel 532 for the pipeline to pass through.

[0274] When installing the cover body 200, first, the second support shaft 202 of the cover body enters the receiving groove 519 and the second channel 502 from the second opening 504, and then the cover body 200 is pushed to overcome the holding force of the force-applying mechanism 511 to move forward a certain distance, that is, the first support shaft 201 of the cover body 200 reaches the first opening portion 503, and the first support shaft 201 is inserted into the first channel through the first opening portion 503. The cover body 200 will move to the first position under the action of the force-applying mechanism 511, completing the installation of the cover body 200.

[0275] According to the attached Fig. 20 As can be seen from S2 , when the cover 200 moves forward for a certain distance, it needs to bypass the second stopper 516 so that the first support shaft 201 reaches the position of the first opening 503 .

[0276] Combination Figure 5 and Figure 6 As shown, when the drawer 100 is pushed back into the storage chamber 1100, the drawer 100 actuates the cover 200 to move along the first channel 501 and the second channel 502. In the process of the cover 200 moving forward from the first position to the second position after the second movement stroke L2, the thrust overcomes the retaining force of the force-applying mechanism 511 to gradually cover the cover 200 on the opening 102 of the drawer 100, and the first mating portion 401 gradually moves relative to the drawer 100 and locks with the second mating portion 402, thereby achieving the sealed retention of the low-pressure storage unit 900.

[0277] When the handle 301 is pulled to pull the drawer 100 out of the storage chamber 1100, the handle 301 is pulled out of the front panel 103 and drives the release mechanism 300 to drive the first matching element 401 and the second matching element 402 to unlock. Thereafter, the drawer 100 is pulled out under the action of the pulling force, and the cover body 200 moves from the second position to the first position through the second movement stroke L2 under the action of the force-applying mechanism 511 and gradually separates from the drawer 100.

[0278] The embodiment of the present invention provides a control method for a refrigeration appliance. The refrigeration appliance 1000 includes a storage chamber 1100. The storage chamber 1100 contains a low-pressure storage unit 900. The low-pressure storage unit 900 includes: a drawer 100, the drawer 100 defines a storage space 101 and has an opening 102 that opens upward. The drawer 100 can be pulled out or pushed back into the storage chamber 1100; a cover 200, the cover 200 is supported in the storage chamber 101, and when the drawer 100 is pushed back into the storage chamber, the cover 200 can be pulled out or pushed back into the storage chamber 1100. When the drawer 100 and the cover 200 are sealed and closed, it is determined whether the door of the refrigeration appliance 1000 is closed. If so, the suction assembly is controlled to stop after the suction assembly continues to work for T time.

[0279] After determining that the door of the refrigeration appliance is closed, the suction component is controlled to start working continuously after waiting for a time t1, so as to prevent the user from frequently opening the door or drawer in a short time, which may cause the sound of the suction component working to bring a bad experience to the user.

[0280] For example, when it is detected that the drawer is not opened within a predetermined time S1, the suction component is controlled to stop after working for a period of T'. The predetermined time S1 may be two or three days, so as to prevent the low-pressure environment from gradually failing due to a long period of time, and the suction component is regularly re-extracted. The time T2 may be less than the time T. This step can be used as a cycle judgment to control the refrigeration appliance.

[0281] For example, if the drawer is not closed after being opened for t2 time, an alarm is triggered. It is used to provide a user with an opportunity to close the low-pressure storage container to provide a low-pressure storage environment.

[0282] The alarm behavior may be a door alarm sounding, and / or a corresponding icon on the display lighting up or flashing, and / or a push notification on an interconnected mobile phone APP.

[0283] Linking the control of the low-pressure storage unit with the real-time temperature of the storage room helps to avoid excessive temperature differences, which may lead to too small internal pressure values ​​and cause large deformation of the low-pressure storage unit structure, which may have an adverse effect on life or performance.

[0284] For example, when it is determined that the door of the refrigeration appliance is closed, the temperature M in the storage room is measured, and a preset suction component continues suction time T according to the detected temperature M, and the suction component stops working after T time.

[0285] For example, when the temperature M≤5°C, the continuous suction time T of the suction component is preset to be T1, and when the temperature M>15°C, the continuous suction time T of the suction component is preset to be T2, and T2 is less than T1.

[0286] Alternatively, when the temperature M is lower than room temperature, the continuous suction time T of the suction component is preset to be T3, and when the temperature M is not lower than room temperature, the continuous suction time T of the suction component is preset to be T4, and T4 is lower than T3.

[0287] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even when only a single embodiment is described with respect to specific features. The feature examples provided in the present disclosure are intended to be illustrative, not restrictive, unless otherwise expressly stated. In specific implementations, multiple features may be combined with each other, where technically feasible, according to actual needs. Various substitutions, changes, and modifications may also be conceived without departing from the spirit and scope of the present application.

Claims

1. A refrigeration appliance (1000), characterized in that: include: A storage room (1100), wherein a low-pressure storage unit (900) is accommodated in the storage room (1100), and the low-pressure storage unit (900) comprises: A drawer (100), the drawer (100) defining a storage space (101) and having an opening (102) opening upward, the drawer (100) being capable of being pulled out of or pushed back into the storage chamber (1100); a cover body (200), the cover body (200) being supported in the storage chamber (1100) and moving from a first position separated from the opening (102) to a second position to seal and close the opening (102) when the drawer (100) is pushed back into the storage chamber (1100); and A suction assembly (800) is disposed on the cover body (200) and is used to operate when the cover body (200) is in a state of closing the opening (102) to form a low-pressure environment in the storage space (101).

2. The refrigeration appliance according to claim 1, characterized in that: The cover (200) limits the displacement of the drawer (100) relative to the cover (200) in the width direction (±X) of the low-pressure storage unit when the drawer (100) is pushed back into the storage chamber (1100); and / or When the drawer (100) is pushed back into the storage chamber (1100), the cover (200) is actuated by the drawer (100) to be displaced in the depth direction (Z) of the storage chamber so that the drawer (100) enters a sealed state; and / or The cover body (200) is provided with a reinforcement structure, and the reinforcement structure covers a projection area formed by the cover body (200) along the height direction (Y) of the storage chamber; and / or The storage chamber (1100) comprises a pair of supporting bodies (500) arranged opposite to each other and used to support the cover body (200); in the second position for sealing and closing the opening (102), the upper surface of the cover body (200) is higher than the upper surface of the supporting body (500); and / or The opening (102) extends toward the outside of the storage space (101) to form an edge that seals with the cover body (200), and the edge serves as a sealing surface structure to form a hollow cavity (109).

3. The refrigeration appliance according to claim 1, characterized in that: The cover body (200) is provided with a receiving cavity (204) for receiving the suction assembly (800), wherein: A gas channel (210) connected to the storage space (101) is provided in the accommodating cavity (204), and the suction component (800) is connected to the gas channel (210) to suck the gas in the storage space (101); and / or The sealing surface of the cover body (200) closing the opening (102) is inclined downward from front to back along the depth direction (Z) of the storage chamber, and the accommodating cavity (204) is adjacent to the rear end of the cover body (200); and / or The suction assembly (800) is accommodated in the accommodating cavity (204) and at least partially protrudes from the main plane of the cover body (200); and / or A heating device (217) is provided in the accommodating cavity (204); and / or At least two reinforcement structures (208, 209) are superimposed on at least a portion of the area surrounding the accommodating cavity (204).

4. The refrigeration appliance according to claim 1, characterized in that: The cover body (200) comprises a cover body (20) and an upper cover (21), wherein the upper cover (21) is disposed on the cover body (20), and the suction assembly (800) is fixed between the upper cover (21) and the cover body (20), wherein: The upper surface of the cover body (20) comprises a smooth surface (216) extending along the width direction of the cover body (200), and the smooth surface (216) serves as a part of the appearance surface of the cover body (200); and / or The upper cover (21) is flush with at least a portion of the upper surface of the cover body (20) to form the outer surface of the cover body (200); and / or The bearing strength of the cover body (20) is greater than the bearing strength of the upper cover (21); and / or The upper cover (21) is provided with a concave surface (232) matching the shape of the suction assembly (800), and the suction assembly (800) is clamped between the concave surface (232) and the cover body (20); and / or The upper cover (21) forms an opposing plug plate (214) at a position corresponding to the suction component (800), and the plug plate (214) limits the radial displacement of the suction component (800).

5. The refrigeration appliance according to claim 4, characterized in that: The suction assembly (800) comprises a suction pump (801), and a flexible sleeve is arranged on the outer side of the suction pump (801). When the upper cover (211) is covered on the cover body (200), the flexible sleeve can be deformed so that the suction pump (801) is tightly clamped between the concave surface (232) and the cover body (20); and / or A buckle is provided on the side of the plug plate (214) away from the suction pump (801), and is engaged with a buckle hole on the wall surface (205b) of the groove (205).

6. The refrigeration appliance according to claim 1 or 4, characterized in that: The upper surface (200a) and / or the lower surface (200b) of the cover body (200) is provided with a reinforcement structure; wherein: At least three reinforcement structures with different reinforcement strengths are arranged on the cover body (200); and / or The middle portion of the cover body (200) comprises at least a wavy second reinforcement structure (207); and / or The smooth surface (216) is formed by the first reinforcement structure (206) extending obliquely upward.

7. The refrigeration appliance according to claim 2, characterized in that: Both sides of the cover body (200) include side edges (203) extending toward the drawer (100), wherein: In a first position where the cover (200) is separated from the opening (102), the side edge (203) is located outside the side wall (104d) and at least partially overlaps with the side wall (104d) in the height direction (Y) of the storage chamber; and / or A sealing member (220) is provided on the lower surface (200b) of the cover body (200), and the side edge (203) at least exceeds the bottom surface (220a) of the sealing member (220); and / or A notch (218) is provided in an area of ​​the side edge (203) close to the front end (200c) of the cover body (200).

8. The refrigeration appliance according to claim 1, characterized in that: The cover (200) comprises a guide structure, wherein the guide structure guides the circulating air in the storage chamber; and / or The rear end (200d) of the cover body (200) is provided with a long groove (219) for avoiding the air outlet in the storage chamber; and / or A reinforcing portion (115) is provided on the rear wall (104b) of the drawer (100), and the reinforcing portion (115) at least comprises a transverse rib (116) whose upper surface is inclined downward by 0.5-5° relative to the bottom (104c).

9. The refrigeration appliance according to claim 8, characterized in that: The guide structure comprises a first inclined surface (213), the first inclined surface (213) being located at the rear end (200d) of the cover body (200) and being inclined downward from front to rear along the depth direction of the storage chamber; and / or The suction assembly (800) partially protrudes from the main plane of the cover body (200), a convex portion (221) matching the protruding portion of the drawer assembly is formed on the cover body (200), and a shark fin-shaped guide rib (222) is provided on the convex portion (221); and / or A vertical rib (223) is provided in an area of ​​the rear end surface of the cover body (200) corresponding to the long groove (219).

10. The refrigeration appliance according to claim 1, characterized in that: The cover body (200) is provided with a drainage hole (224), wherein: The drainage hole (224) is located on the side of the cover body (200) and is connected to the interior of the cover body (200); and / or A connector mounting portion (230) is provided on the cover body (200), and the drainage hole (224) is connected to the connector mounting portion (230).

11. The refrigeration appliance according to claim 2, characterized in that: The support body (500) comprises a force applying mechanism (511), and the force applying mechanism (511) is suitable for keeping the cover body (200) in the first position; and / or The support body (500) comprises a first channel (501) and a second channel (502) arranged front to back along the depth direction of the storage chamber, the first channel (501) and the second channel (502) are at least partially inclined to provide a movement path for the cover body (200) to move from a first position to a second position, the first position being higher than the second position; and / or A reinforcing member (108) having a strength greater than that of the drawer body is arranged in the hollow cavity (109).

12. The refrigeration appliance according to any one of claims 1 to 5 or 7 to 11, characterized in that: The refrigeration appliance (1000) comprises a locking mechanism (400), and when the cover (200) is driven by the drawer to the second position, the locking mechanism (400) locks the drawer (100) in the storage chamber (1100).

13. The refrigeration appliance according to claim 12, characterized in that: The refrigeration appliance (100) comprises a release mechanism (300), which is arranged on the front side of the drawer (100) for being manipulated by a user to allow the release mechanism (300) to move relative to the drawer (100), thereby driving a locking mechanism (400) to unlock the drawer (100).

Images