Nitrogen generation device and refrigerator

Abstract

A nitrogen generation device (100) and a refrigerator (1000) comprising same. The nitrogen generation device (100) comprises a housing (10), a nitrogen generation assembly (20) mounted on the housing (10), mounting supports (30), and a fresh-keeping drawer (40); the nitrogen generation assembly (20) comprises an air pump (21) and a molecular sieve (22); the air pump (21) is communicated with the molecular sieve (22) and used for providing compressed air to the molecular sieve (22); the mounting supports (30) are configured to be connected to a refrigeration liner (200) of the refrigerator (1000); the fresh-keeping drawer (40) is slidably connected to the mounting supports (30); the fresh-keeping drawer (40) and the housing (10) can define a fresh-keeping compartment (1010); and the fresh-keeping compartment (1010) is communicated with a nitrogen outlet (221) of the molecular sieve (22).

Description

Nitrogen production device and refrigerator

[0001] Related applications

[0002] The present application claims priority to Chinese Patent Applications No. 202510085494.6, entitled "Nitrogen production device and refrigerator" and filed on January 20, 2025, and No. 202421810210.2, entitled "Gas pump assembly structure, refrigeration and freezing device, and refrigerator" and filed on July 29, 2024, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present application belongs to the technical field of refrigerator preservation, and in particular relates to a nitrogen production device and a refrigerator. BACKGROUND

[0004] Since food cells have a respiratory function, and the cells consume oxygen to decompose their own nutrients during the respiratory process, leading to food spoilage. Therefore, a refrigerator is usually used for food preservation, for example, a vacuum preservation chamber is provided in the refrigerator body, or the nitrogen concentration in the preservation chamber is increased, the purpose of these two ways is to reduce the oxygen concentration in the refrigerator, inhibit the food cell respiration, thereby effectively delaying the food spoilage and prolonging the preservation time.

[0005] In the PSA (Pressure Swing Adsorption) nitrogen production system of the refrigerator, an air pump is needed to exhaust air to the molecular sieve, and the nitrogen in the air is separated and treated by the structural characteristics of the molecular sieve and discharged into the preservation drawer of the refrigerator to achieve the purpose of nitrogen preservation. At present, in the PSA nitrogen production system of the refrigerator in the related art, the air pump, the molecular sieve and the preservation drawer are independent of each other, and a gas pipe is used to realize the communication between the air pump, the molecular sieve and the preservation drawer. Therefore, during the manufacturing process of the refrigerator, the air pump, the molecular sieve and the preservation drawer need to be sequentially assembled on the inner tank of the cabinet through the installation plate, which not only reduces the production and assembly efficiency and increases the cost, but also the PSA nitrogen production system has many leakage points during operation, and the setting of the air pump also damages the insulation layer of the refrigerator cold tank, resulting in cold leakage. SUMMARY

[0006] Therefore, it is necessary to provide a nitrogen production device and a refrigerator.

[0007] The application discloses a nitrogen production device applied to a refrigerator, which comprises a box body, a nitrogen production assembly, a mounting bracket and a preservation drawer; the nitrogen production assembly is mounted on the box body and comprises an air pump and a molecular sieve; the air pump is communicated with the molecular sieve and is used for providing compressed air for the molecular sieve; the mounting bracket is mounted on the box body and is used for connecting a cold storage liner of the refrigerator; the preservation drawer is slidably connected to the mounting bracket; a preservation chamber can be formed between the preservation drawer and the box body; the preservation chamber is communicated with a nitrogen outlet of the molecular sieve.

[0008] In one of the embodiments, the molecular sieve is contained in the box body; a nitrogen discharge port is formed in the box body; and the nitrogen outlet is communicated with the preservation chamber through the nitrogen discharge port.

[0009] In one of the embodiments, the air pump is mounted on the box body in a suspended manner; and the air pump is arranged outside the preservation drawer.

[0010] In one of the embodiments, the nitrogen production assembly further comprises an air pump box; the air pump is mounted in the air pump box; a first damping member is mounted on the air pump box; and the air pump box can be suspended on the box body through the first damping member.

[0011] In one of the embodiments, the nitrogen production assembly further comprises an air pump box; the air pump box comprises an air pump inner box and an air pump outer box; the air pump outer box inwardly forms a first sealed chamber; and the air pump inner box is contained in the first sealed chamber; the air pump inner box inwardly forms a second sealed chamber; and the air pump is contained in the second sealed chamber.

[0012] In one of the embodiments, the nitrogen production assembly further comprises an air pump box; the air pump box comprises an air pump inner box and an air pump outer box; the air pump inner box is mounted in the air pump outer box; the air pump inner box and the air pump outer box are abutted and limited by a second damping member; the air pump is mounted in the air pump inner box; and the air pump and the air pump inner box are abutted and limited by a third damping member.

[0013] In one of the embodiments, the third damping member comprises an upper damping pad and a lower damping pad; the upper damping pad and the lower damping pad are arranged at upper and lower ends of the air pump; one of the upper damping pad and the air pump inner box is provided with a limiting rib; the other is provided with a first limiting gap; the limiting rib is clamped at the first limiting gap; one of the lower damping pad and the air pump inner box is provided with a protruding column; the other is provided with a plug hole; and the protruding column is plugged in the plug hole.

[0014] In one of the embodiments, the nitrogen production assembly further comprises: a gas pump inner box comprising a mounting box body and a mounting box cover, which are assembled together to jointly define a second closed chamber; a third damping member arranged in the second closed chamber and configured to limit an assembly space of the gas pump; and a fourth damping member mounted on the outside of the gas pump inner box and used to connect the box body.

[0015] In one of the embodiments, the third damping member comprises at least two damping pads with accommodating grooves, the at least two damping pads jointly define the assembly space, at least one of the damping pads is arranged on the mounting box body, and at least another one of the damping pads is arranged on the mounting box cover.

[0016] In one of the embodiments, the mounting box body is detachably connected with the corresponding damping pad, and / or the mounting box cover is detachably connected with the corresponding damping pad.

[0017] In one of the embodiments, the mounting box cover corresponds to an upper damping pad, one of the upper damping pad and the mounting box cover is provided with a limiting rib, and the other one is provided with a second limiting notch, the limiting rib is arranged in the second limiting notch; and / or the mounting box body corresponds to a lower damping pad, one of the lower damping pad and the mounting box body is provided with a protruding column, and the other one is provided with a plug-in hole, the protruding column is arranged in the plug-in hole.

[0018] In one of the embodiments, each of the damping pads is provided with a constraint portion at the groove wall of the corresponding accommodating groove, and the constraint portion is used to abut against the gas pump.

[0019] In one of the embodiments, the gas pump inner box has a central axis; the fourth damping member comprises at least two sealing plugs arranged at intervals around the central axis, each of the sealing plugs is connected with the gas pump inner box and used to connect the box body.

[0020] In one of the embodiments, one of the fourth damping member and the gas pump inner box is provided with an assembly protrusion, and the other one is provided with an assembly clamping groove, the assembly protrusion is arranged in the assembly clamping groove.

[0021] In one of the embodiments, one of the fourth damping member and the gas pump inner box is provided with an assembly protrusion, and the other one is provided with an assembly clamping groove, the assembly protrusion is arranged in the assembly clamping groove.

[0022] In one of the embodiments, the box body is provided with a hanging groove, and the fourth damping member is arranged in the hanging groove.

[0023] In one of the embodiments, the box body is provided with at least two spaced suspension arms on one side in the thickness direction of the box body, each of the suspension arms is provided with a suspension slot, and each of the sealing plugs of the fourth damping member is correspondingly arranged in the suspension slot.

[0024] In one of the embodiments, the number of the mounting brackets is two, and the fresh-keeping drawer is arranged between the two mounting brackets and is respectively connected with the two mounting brackets in sliding mode.

[0025] In addition, the application also claims a refrigerator comprising a refrigeration liner and the nitrogen generating device described above, wherein the nitrogen generating device is mounted in the refrigeration liner.

[0026] In one of the embodiments, an extension protrusion is formed on the refrigeration liner, the extension protrusion is arranged below the box body and abuts against the box body, and a second recess is formed around the extension protrusion to accommodate the gas pump.

[0027] The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the application will be apparent from the description and drawings, and from the claims. BRIEF DESCRIPTION OF DRAWINGS

[0028] To better describe and illustrate the embodiments and / or examples of the inventions disclosed herein, reference can be made to one or more drawings. Additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the disclosed inventions, the presently described embodiments and / or examples, and the best mode presently contemplated of these inventions.

[0029] FIG. 1 is a structural schematic view of a refrigerator according to an embodiment of the application.

[0030] FIG. 2 is a structural schematic view of a nitrogen generating device in the refrigeration liner according to the application, wherein the fresh-keeping drawer is in a hidden state.

[0031] FIG. 3 is a partial structural schematic view of the refrigerator according to the application, wherein the nitrogen generating device is in a hidden state.

[0032] FIG. 4 is a structural schematic view of the gas pump assembled to the box body through the gas pump box according to the application.

[0033] FIG. 5 is a partial sectional view of the gas pump assembled to the box body through the gas pump box according to the application.

[0034] FIG. 6 is an exploded view of the molecular sieve assembled to the box body according to the application.

[0035] Figure 7 is a schematic diagram of the structure of the molecular sieve when assembled on the main body of the box.

[0036] Figure 8 is a schematic diagram of the structure of the air pump when assembled in the air pump box.

[0037] Figure 9 is a schematic diagram of the structure of the air pump when assembled in the air pump box, wherein the outer box of the air pump is in a hidden state.

[0038] Figure 10 is a sectional view of the air pump when assembled in the air pump box.

[0039] Figure 11 is a schematic diagram of the structure of the second damping member when assembled on the air pump.

[0040] Figure 12 is an exploded view of the box body and the mounting bracket when assembled.

[0041] Figure 13 is a schematic diagram of the structure of the upper damping block.

[0042] Figure 14 is a schematic diagram of the structure of the nitrogen generating device.

[0043] Figure 15 is a schematic diagram of the third damping member cooperating with the air pump.

[0044] Figure 16 is a schematic diagram of the structure of the upper damping member.

[0045] Figure 17 is a schematic diagram of the upper damping member cooperating with the mounting box cover.

[0046] Figure 18 is a schematic diagram of the structure of the lower damping member.

[0047] Figure 19 is a schematic diagram of the structure of the mounting box body.

[0048] Figure 20 is a schematic diagram of the structure of the mounting box cover.

[0049] Figure 21 is a schematic diagram of the structure of the damping block.

[0050] Figure 22 is a schematic diagram of the structure of the damping block.

[0051] Figure 23 is a schematic diagram of the structure of the nitrogen generating device.

[0052] Figure 24 is a schematic diagram of the structure of the nitrogen generating device.

[0053] Figure 25 is a sectional view of the structure of the nitrogen generating device.

[0054] 1000, refrigerator; 1010, fresh-keeping chamber; 100, nitrogen generator; 10, box body; 11, nitrogen discharge port; 12, suspension carrier; 13, suspension arm; 131, suspension groove; 110, box main body; 120, cover plate; 101, first air pipe; 102, second air pipe; 103, third air pipe; 1031, electromagnetic valve; 20, nitrogen generation assembly; 21, air pump; 210, connecting pipeline; 211, air inlet pipe; 212, air outlet pipe; 22, molecular sieve; 221, nitrogen outlet; 222, oxygen outlet; 23, air pump box; 231, air pump inner box; 2301, mounting box body; 2302, mounting box cover; 23021, assembly protrusion; 2310, second sealed chamber; 23101, first recessed cavity; 2311, limiting rib; 2312, mounting protrusion; 23121, plug-in hole; 2313, protruding buckle; 2314, clamping plate; 232, air pump outer box; 2321, connecting lug; 2320, first sealed chamber; 2312, plug-in hole; 220, sealing ring; 201, first damping member; 202, second damping member; 2021, upper damping block; 20211, connecting main body; 20212, damping box body; 20213, connecting rib; 2022, lower damping block; 203, third damping member; 2003, damping pad; 2030, accommodating groove; 2031, upper damping pad; 20311, first limiting notch; 20312, second limiting notch; 20313, first groove part; 20314, connecting part; 20315, constraint part; 2032, lower damping pad; 20321, protruding column; 20322, second groove part; 2033, reinforcing rib; 204, fourth damping member; 2041, sealing plug; 20411, assembly clamping groove; 2050, assembly space; 30, mounting support; 301, screw; 31, sliding rail; 40, fresh-keeping drawer; 200, refrigeration liner; 2001, extending protruding part; 2002, second recessed cavity. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0056] It is to be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. When an element is referred to as being "fixed" to another element, it can be directly fixed to the other element or intervening elements can also be present.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0058] The nitrogen generating device 100 claimed in the present application is particularly applied to a refrigerator 1000.

[0059] As shown in FIG. 1, FIG. 2, FIG. 5 and FIG. 6, the nitrogen generating device 100 provided by the embodiments of the present application comprises a box body 10, a nitrogen generating assembly, a mounting bracket 30 and a fresh-keeping drawer 40. The nitrogen generating assembly is mounted on the box body 10, and comprises an air pump 21 and a molecular sieve 22. The air pump 21 is in communication with the molecular sieve 22 and is used to provide compressed air for the molecular sieve 22. The mounting bracket 30 is mounted on the box body 10 and is used to connect the refrigerating inner container 200 of the refrigerator 1000. The fresh-keeping drawer 40 is slidably connected to the mounting bracket 30. A fresh-keeping chamber 1010 can be enclosed by the fresh-keeping drawer 40 and the box body 10, and the fresh-keeping chamber 1010 is in communication with a nitrogen outlet 221 of the molecular sieve 22. Here, the air pump 21 provides the molecular sieve 22 with compressed air with a pressure value suitable for the working pressure required by the molecular sieve 22, and the molecular sieve 22 is specifically a tower-type molecular sieve. It is to be noted that the specific structure and working principle of the molecular sieve 22 can be realized by using conventional methods of related technologies, and will not be described here.

[0060] As can be seen, the nitrogen generating device 100 is assembled based on the box body 10, so that the modular design of the nitrogen generating device 100 is realized, the nitrogen generating device 100 can be independently produced and manufactured, and can be assembled in the refrigerator 1000 at one time. Therefore, the structure of the nitrogen generating device 100 can be simplified, the production of the nitrogen generating device 100 and the assembly efficiency of the nitrogen generating device 100 in the refrigerator 1000 can be improved, the cost can be reduced, the leakage point of the nitrogen generating device 100 during operation can be reduced, the vibration transmission to the cold storage liner 200 can be weakened, the safety and reliability of the nitrogen generating device 100 and the cold storage liner 200 of the refrigerator 1000 after long-term use can be improved, in addition, since the air pump 21 is installed on the box body 10, the air pump 21 will not damage the heat preservation layer of the cold storage liner 200 when the nitrogen generating device 100 is assembled in the refrigerator 1000, and the cold energy of the cold storage liner 200 will not be leaked, and the working energy consumption of the refrigerator 1000 can be reduced.

[0061] As shown in FIGS. 2, 4 and 5, in an embodiment, the air pump 21 is installed on the box body 10 in a suspended manner; wherein the air pump 21 is arranged outside the fresh-keeping drawer 40, so that the assembly of the air pump 21 on the box body 10 will not occupy the space of the box body 10, so that the nitrogen generating device 100 can be compact in size, and the integration of the nitrogen generating device 100 and the storage and preservation of the fresh-keeping chamber 1010 will not be affected, so that the fresh-keeping chamber 1010 can provide a larger storage capacity for the user. Here, the air pump 21 is arranged at the rear of the fresh-keeping drawer 40, and the air pump 21 can be suspended on the suspension carrier 12 of the box body 10 through the air pump box 23.

[0062] As shown in FIGS. 4, 5 and 8, in an embodiment, the first damping member 201 is installed on the air pump box 23, and the air pump box 23 can be suspended on the box body 10 through the first damping member 201, so that a gap is left between the air pump box 23 and the box body 10, so that the first damping member 201 can buffer the transmission of the vibration generated during the operation of the air pump 21 to the box body 10, so that the vibration transmission from the nitrogen generating device 100 to the cold storage liner 200 during operation can be further weakened, and the safety and reliability of the nitrogen generating device 100 and the cold storage liner 200 of the refrigerator 1000 after long-term use can be further improved. Here, the first damping member 201 is a relatively soft and stress-deformable elastic body, and the material of the first damping member 201 can be configured as rubber, silicone or the like.

[0063] As shown in FIG. 5, in this embodiment, the air pump box 23 is formed with two connecting lugs 2321 arranged on both sides of the air pump box 23 in the width direction of the air pump box 23; correspondingly, the number of the first damping members 201 is configured to be two, and the two first damping members 201 are respectively sleeved on the corresponding connecting lugs 2321, and the air pump box 23 can be hung on the hanging carrier 12 of the box body 10 through the two first damping members 201, so that the air pump 21 has good balance when the air pump box 23 is hung on the box body 10. It can be understood that in other embodiments, the air pump box 23 can also be hung on the hanging carrier 12 of the box body 10 through three, four, or even more first damping members 201.

[0064] As shown in FIGS. 6 and 7, in an embodiment, the molecular sieve 22 is accommodated in the box body 10; wherein the box body 10 is formed with a nitrogen discharge port 11, and the nitrogen outlet 221 communicates with the fresh-keeping chamber 1010 through the nitrogen discharge port 11, so that the nitrogen discharged from the nitrogen outlet 221 of the molecular sieve 22 can be directly discharged to the fresh-keeping chamber 1010 through the nitrogen discharge port 11 of the box body 10, which can simplify the gas path for communication between the molecular sieve 22 and the fresh-keeping chamber 1010, save the gas path joint, reduce the cost, and reduce the leakage points of the nitrogen making device 100; on the other hand, the box body 10 can also be used to install and protect the molecular sieve 22. Here, the molecular sieve 22 can be connected and communicated with the air pump 21 through the first gas pipe 101, and the nitrogen outlet 221 of the molecular sieve 22 communicates with the nitrogen discharge port 11 through the second gas pipe 102. Here, the box body 10 includes a box body 110 and a cover plate 120, and the molecular sieve 22 is installed on the box body 110 and sealed by the cover plate 120.

[0065] As shown in FIG. 7, in this embodiment, the molecular sieve 22 also has an oxygen outlet 222, which transmits oxygen outward through a third gas pipe 103. Specifically, an electromagnetic valve 1031 can be installed on the third gas pipe 103 to control the opening and closing of the third gas pipe 103. In combination with the working principle of the molecular sieve 22, the amount of nitrogen made by the molecular sieve 22 during the nitrogen making period can be realized to meet the fresh-keeping demand of the fresh-keeping chamber 1010 in the nitrogen making device 100.

[0066] As shown in FIG. 5, in an embodiment, the air pump box 23 comprises an air pump inner box 231 and an air pump outer box 232, the air pump outer box 232 inwardly surrounds to form a first closed chamber 2320, and the air pump inner box 231 is accommodated in the first closed chamber 2320; the air pump inner box 231 inwardly surrounds to form a second closed chamber 2310, and the air pump 21 is accommodated in the second closed chamber 2310. That is, the air pump box 23 adopts a double-layer box body to wrap and seal the air pump 21, which can make the air pump inner box 231 and the air pump outer box 232 play a superimposed role of noise reduction, effectively reduce the noise of the air pump 21, and specifically reduce the noise generated by the air pump 21 to about 40db, so that the working of the nitrogen making device 100 can reach a relatively quiet state in a home environment; on the other hand, it can also make the heat generated by the air pump 21 exchange slowly with the outside, so as not to destroy the low-temperature storage environment of the refrigeration chamber in the refrigeration liner 200, and is beneficial to the preservation of the refrigeration chamber. Here, the air pump inner box 231 and the air pump outer box 232 of the embodiment are both configured as two upper and lower half-box structures, and the air pump inner box 231 and the air pump outer box 232 are respectively provided with a sealing ring 220 between the two half-boxes, so as to inwardly surround the corresponding first closed chamber 2320 and the corresponding second closed chamber 2310, respectively.

[0067] As shown in FIG. 5 and FIG. 9, in an embodiment, the air pump 21 is connected and communicated with a connecting pipeline 210, the connecting pipeline 210 comprises an air inlet pipe 211 and an air outlet pipe 212, the air inlet pipe 211 and the air outlet pipe 212 pass through the air pump inner box 231 and the air pump outer box 232 in sequence, and then extend outwardly through one of the connecting lugs 2321, so that the air pump 21 can suck air in the refrigeration chamber where the refrigeration liner 200 is located through the air inlet pipe 211 when working, and then discharge the air to the molecular sieve 22 through the air outlet pipe 212. Here, the air inlet pipe 211 and the air outlet pipe 212 are respectively assembled and sealed with the corresponding air pump inner box 231 and the corresponding air pump outer box 232 by the sealing plugs 2041 located in the air pump inner box 231 and the air pump outer box 232.

[0068] As shown in FIG. 5 and FIG. 9, in an embodiment, the air pump inner box 231 and the air pump outer box 232 are abutted and limited by the second damping member 202. That is, the air pump inner box 231 is installed in the air pump outer box 232 and contacts with the air pump outer box 232 through the second damping member 202, and indirect contact between the air pump inner box 231 and the air pump outer box 232 is realized, so that the elastic deformation of the second damping member 202 can reduce the transmission of the vibration of the air pump inner box 231 driven by the air pump 21 to the air pump outer box 232, and achieve the effect of secondary damping of the air pump 21.

[0069] As shown in FIG. 9, in this embodiment, the second damping member 202 includes four upper damping blocks 2021 and four lower damping blocks 2022, the four upper damping blocks 2021 are installed at four corner positions on the top of the air pump inner box 231, and the four lower damping blocks 2022 are installed at four corner positions on the bottom of the air pump inner box 231; and the air pump inner box 231 can be in abutment with the air pump outer box 232 through the four upper damping blocks 2021 and the four lower damping blocks 2022, and the vibration transmission between the air pump inner box 231 and the air pump outer box 232 is damped. It can be understood that in other embodiments, the number of upper damping blocks 2021 and lower damping blocks 2022 in the second damping member 202 can also be configured as two, three, five, or even more, and can be arranged diagonally on the air pump inner box 231, which will not be described here.

[0070] As shown in FIG. 13, in this embodiment, the upper damping block 2021 includes a connecting body 20211, a damping box body 20212, and four connecting rib strips 20213, the four connecting rib strips 20213 are symmetrically arranged between the connecting body 20211 and the damping box body 20212, and are respectively connected with the connecting body 20211 and the damping box body 20212 as a whole; wherein the connecting body 20211 is arranged at one corner position of the air pump inner box 231, and the connecting body 20211 can be in contact with three end faces of the corresponding corner of the air pump inner box 231, and is in clamping cooperation with the corresponding protruding buckle 2313 of the air pump inner box 231. So that the upper damping block 2021 can be in abutment and limited by the damping box body 20212 and the air pump outer box 232, and the elastic deformation of the four connecting rib strips 20213 and the damping box body 20212 is used to realize the buffering of the vibration of the air pump inner box 231 transmitted to the air pump outer box 232. Here, the structure of the lower damping block 2022 is the same as that of the upper damping block 2021, which will not be described here.

[0071] As shown in FIGS. 5, 10 and 11, in an embodiment, the air pump 21 and the air pump inner box 231 are in abutment and limited by the third damping member 203. That is, the air pump 21 installed in the air pump inner box 231 is in contact with the air pump inner box 231 through the third damping member 203, and indirect contact between the air pump 21 and the air pump inner box 231 is realized, so that the elastic deformation of the third damping member 203 can be used to reduce the transmission of the vibration generated by the air pump 21 to the air pump inner box 231, and the air pump 21 is damped once.

[0072] As shown in FIG. 5, FIG. 10 and FIG. 11, in this embodiment, the third damping member 203 includes an upper damping pad 2031 and a lower damping pad 2032, which are arranged at the upper and lower ends of the air pump 21. Specifically, the upper damping pad 2031 and the lower damping pad 2032 are sleeved on the upper and lower ends of the air pump 21, so that the assembly of the upper damping pad 2031 and the lower damping pad 2032 on the air pump 21 is limited.

[0073] As shown in FIG. 10 and FIG. 11, in this embodiment, one of the upper damping pad 2031 and the air pump inner box 231 is provided with a limiting rib 2311, and the other is provided with a first limiting gap 20311. The limiting rib 2311 is clamped at the first limiting gap 20311, so that the assembly of the upper damping pad 2031 and the air pump inner box 231 is limited. In this way, the air pump box 23 can be prevented from being separated from the upper damping pad 2031 when the air pump box 23 is tilted, dropped or turned over, so that the upper damping pad 2031 can continuously and effectively damp the air pump 21. Here, the limiting rib 2311 is arranged on and connected with the air pump inner box 231, and the first limiting gap 20311 is arranged on the upper damping pad 2031. It should be understood that in other embodiments, the limiting rib can be arranged on the upper damping pad 2031, and the first limiting gap can be arranged on the air pump inner box 231, which will not be described here.

[0074] As shown in FIG. 10 and FIG. 11, in this embodiment, one of the lower damping pad 2032 and the air pump inner box 231 is provided with a protruding column 20321, and the other is provided with a plug-in hole 23121. The protruding column 20321 is arranged in the plug-in hole 23121, so that the assembly of the lower damping pad 2032 and the air pump inner box 231 is limited. In this way, the air pump box 23 can be prevented from being separated from the lower damping pad 2032 when the air pump box 23 is tilted, dropped or turned over, so that the lower damping pad 2032 can continuously damp the air pump 21. Here, the plug-in hole 23121 is arranged on the air pump inner box 231, and the protruding column 20321 is arranged on the lower damping pad 2032. The number of the protruding columns 20321 is two rows, and the number of the protruding columns 20321 in each row is three. It should be understood that in other embodiments, the protruding column can be arranged on the air pump inner box 231, and the plug-in hole can be arranged on the lower damping pad 2032, which will not be described here.

[0075] As can be seen from the above, the air pump box 23 of the embodiment can utilize the elastic deformation of the second damping member 202 and the third damping member 203 to play a double damping role on the vibration generated during the operation of the air pump 21. In addition, the upper damping block 2021 and the lower damping block 2022 in the second damping member 202, and the upper damping pad 2031 and the lower damping pad 2032 in the third damping member 203 have different structures, so that their amplitude, direction, frequency and the like are relatively independent of each other when they are flexibly deformed, that is, the upper damping block 2021, the lower damping block 2022, the upper damping pad 2031 and the lower damping pad 2032 can independently perform their damping actions, so that the air pump box 23 can achieve a better damping effect on the air pump 21, so that the vibration of the air pump is transmitted to the air pump outer box 232 to a very weak state. In combination with the air pump outer box 232 of the air pump box 23 being suspended to the box body 10 through the first damping member 201, the transmission of the vibration of the air pump box 23 to the box body 10 is weaker, so that the vibration generated during the operation of the air pump 21 does not affect the assembly of the box body 10 on the refrigeration liner 200.

[0076] As shown in FIG. 12, in an embodiment, the number of mounting brackets 30 is configured to be two, and the two mounting brackets 30 are arranged on both sides of the box body 10 in the length direction of the box body 10; wherein the fresh-keeping drawer 40 is arranged between the two mounting brackets 30 and is in sliding connection with the two mounting brackets 30, respectively. That is, the nitrogen generating device 100 can use two mounting brackets 30 to carry the box body 10 and the fresh-keeping drawer 40, that is, the number of the fresh-keeping drawer 40 is one, so that the nitrogen generating device 100 can make full use of its structure to provide the user with the maximum storage capacity, and improve the stability of the subsequent installation of the nitrogen generating device 100 in the refrigeration liner 200 of the refrigerator 1000. Here, the two mounting brackets 30 are respectively provided with slide rails 31, and the fresh-keeping drawer 40 can be slidingly connected to the mounting bracket 30 through the slide rail 31, wherein each mounting bracket 30 can be connected and fixed to the box body 10 by screws 301. It should be noted that the box body 10 of the embodiment is embedded with a sealing ring (not shown), and when the fresh-keeping drawer 40 is retracted onto the box body 10, the fresh-keeping drawer 40 can abut and seal with the sealing ring, and form a fresh-keeping chamber 1010.

[0077] In another embodiment, as shown in FIGS. 14, 15 and 25, the mounting structure and the damping structure of the air pump 21 are different from those of the above embodiments, and other structures can refer to those of the above embodiments, which will not be described in detail. Specifically, in this embodiment, the nitrogen production assembly includes the air pump 21 and the molecular sieve 22, and further includes an air pump inner box 231, a third damping member 203 and a fourth damping member 204. The air pump inner box 231 includes a mounting box body 2301 and a mounting box cover 2302, which are assembled together to jointly define a second closed chamber 2310. The third damping member 203 is arranged in the second closed chamber 2310 and is configured to define an assembly space 2050 for limiting the air pump 21. The fourth damping member 204 is mounted on the outside of the air pump inner box 231 and is used to connect the box body 10.

[0078] It can be understood that the air pump 21 can be mounted in the assembly space 2050 defined by the third damping member 203, and since the third damping member 203 is mounted in the second closed chamber 2310 of the air pump inner box 231, it is equivalent to mounting the air pump 21 in the air pump inner box 231. That is, the air pump 21 is mounted in the air pump inner box 231 through the third damping member 203, and the third damping member 203 is mounted between the air pump 21 and the air pump inner box 231. Therefore, the vibration generated by the operation of the air pump 21 can be absorbed and damped once through the third damping member 203, reducing the vibration transmitted to the air pump inner box 231. At the same time, since the fourth damping member 204 is arranged on the outside of the air pump inner box 231 and is used to connect the air pump inner box 231 to the target assembly component, the vibration of the air pump 21 transmitted to the air pump inner box 231 through the third damping member 203 can be absorbed and damped again through the fourth damping member 204, reducing the vibration transmitted to the target assembly component and ensuring the connection reliability between the air pump inner box 231 and the target assembly component.

[0079] It can be understood that the box body 10 can be a mounting plate structure, can have a refrigeration foaming layer, or can have other structures for mounting the air pump 21.

[0080] As shown in FIGS. 15 to 18 and 25, in some embodiments, the third damping member 203 includes at least two damping pads 2003 having accommodating grooves 2030, the at least two damping pads 2003 jointly define the assembly space 2050, and at least one damping pad 2003 is arranged on the mounting box body 2301 and at least one other damping pad 2003 is arranged on the mounting box cover 2302. In this way, it is equivalent to arranging the damping pad 2003 corresponding to the mounting box body 2301 and the mounting box cover 2302 for the air pump 21, so as to fully absorb the vibration (hereinafter referred to as vibration absorption) and achieve the damping effect.

[0081] In actual use, the mounting box cover 2302 and the mounting box body 2301 are correspondingly provided with first recesses 23101, and the two first recesses 23101 jointly form a second sealed chamber 2310 when the mounting box cover 2302 and the mounting box body 2301 are buckled. The mounting box cover 2302 and the mounting box body 2301 can be fixed by screws. Take two damping pads 2003 as an example, the two damping pads 2003 can be arranged relatively and at intervals, one of the two damping pads 2003 is installed in the first recess 23101 of the mounting box body 2301, and the other damping pad 2003 is installed in the first recess 23101 of the mounting box cover 2302, and then they are buckled on the outside of the air pump 21. Of course, one of the two damping pads 2003 can be buckled on the upper position of the air pump 21 through the corresponding accommodating groove 2030, and the other damping pad 2003 can be buckled on the lower position of the air pump 21 through the corresponding accommodating groove 2030, and then the mounting box body 2301 and the mounting box cover 2302 are buckled on the outside of the corresponding damping pad 2003.

[0082] As shown in FIG. 18, further, since the air pump 21 is installed between the two upper and lower damping pads 2003 arranged relatively and at intervals, each damping pad 2003 can be provided with a constraint portion 20315 at the groove wall of the corresponding accommodating groove 2030, and the constraint portion 20315 abuts against the air pump 21. It can be understood that the constraint portion 20315 is used to cooperate with the air pump 21, so as to improve the connection reliability of each damping pad 2003 and the air pump 21, and avoid the damping pad 2003 from loosening due to vibration when the air pump 21 works. Of course, if the air pump 21 has a recessed area, the constraint portion 20315 can be provided on the damping pad 2003 corresponding to the recessed area.

[0083] Each constraint portion 20315 and the groove wall of the corresponding accommodating groove 2030 can be smoothly transitioned, so as to reduce the abrasion between the air pump 21.

[0084] Please continue to refer to FIG. 15 to FIG. 18 and FIG. 25, optionally, the damping pad 2003 corresponding to the installation box body 2301 is the upper damping pad 2031, and the upper damping pad 2031 is buckled in the upper position of the air pump 21 through the corresponding accommodating groove 2030. The damping pad 2003 corresponding to the installation box cover 2302 is the lower damping pad 2032, and the lower damping pad 2032 is buckled in the lower position of the air pump 21 through the corresponding accommodating groove 2030. The installation box body 2301 is detachably connected with the upper damping pad 2031, and the installation box cover 2302 is detachably connected with the lower damping pad 2032. Such a setting facilitates the disassembly and assembly of the upper damping pad 2031 and the lower damping pad 2032 relative to the installation box cover 2302 and the installation box body 2301 respectively, and facilitates the replacement of the corresponding damping pad 2003. Of course, only the installation box body 2301 and the upper damping pad 2031 can be detachably connected, or only the installation box cover 2302 and the lower damping pad 2032 can be detachably connected.

[0085] Specifically, one of the upper damping pad 2031 and the installation box cover 2302 protrudes a limiting rib 2311, and the other is provided with a second limiting notch 20312, and the limiting rib 2311 is clamped in the second limiting notch 20312; at the same time, one of the lower damping pad 2032 and the installation box body 2301 protrudes a protruding column 20321, and the other is recessed with a plug-in hole 23121, and the plug-in hole 23121 is inserted into the plug-in hole 23121. That is, as for the installation box cover 2302 and the upper damping pad 2031, the clamping cooperation of the limiting rib 2311 and the second limiting notch 20312 is used to realize the detachable connection of the two; and as for the installation box body 2301 and the lower damping pad 2032, the plug-in cooperation of the protruding column 20321 and the plug-in hole 23121 is used to realize the detachable connection of the two.

[0086] As shown in FIG. 15 to FIG. 17 and FIG. 25, in some specific embodiments, the upper damping pad 2031 includes a first groove portion 20313 and a connecting portion 20314 connected to the groove portion, and the first groove portion 20313 is recessed with a corresponding accommodating groove 2030. The first groove portion 20313 is also configured with an avoidance hole communicating with the corresponding accommodating groove 2030, and the line on the air pump 21 or the like can be inserted in the avoidance hole. The connecting portion 20314 is connected to the side of the first groove portion 20313 away from the corresponding groove. The connecting portion 20314 includes two oppositely and spaced connecting arms (not shown in the figure), for example, spaced along the Y-axis direction, and each connecting arm is provided with a second limiting notch 20312 on both sides along the X-axis direction. The installation box cover 2302 protrudes a limiting rib 2311 on the cavity wall corresponding to the first recess cavity 23101, and the limiting rib 2311 is clamped in the second limiting notch 20312, and the lower surface of the limiting rib 2311 abuts against the upper surface of the second limiting notch 20312. In addition, the opposite side of each connecting arm can protrude a reinforcing rib 2033 to improve the structural strength of the corresponding connecting arm.

[0087] As shown in FIG. 15, FIG. 18, FIG. 19 and FIG. 25, in an embodiment, the lower damping pad 2032 comprises a second groove portion 20322, which is concavely provided with a corresponding accommodating groove 2030. The protruding column 20321 is protrudingly provided at the bottom of the second groove portion 20322 away from the corresponding slot, i.e. protrudingly provided at the bottom of the second groove portion 20322 and extends in the direction away from the upper damping pad 2031. The mounting box body 2301 is concavely provided with a plug-in hole 23121 at the bottom of the corresponding first recess 23101 in the direction away from the mounting box cover 2302, and the protruding column 20321 is inserted into the plug-in hole 23121, i.e. the detachable connection between the lower damping pad 2032 and the mounting box body 2301 can be achieved. For example, the bottom is protrudingly provided with a mounting protrusion 2312, and the extension end of the mounting protrusion 2312 is concavely provided with a plug-in hole 23121 in the direction away from the upper damping pad 2031. At the same time, a plurality of clamping plates 2314 can be arranged in the plug-in hole 23121 to limit the cooperation with the protruding column 20321.

[0088] Among them, the protruding column 20321 is provided with a plurality of and is arranged at intervals, and the plug-in hole 23121 is also provided with a plurality of corresponding to each other, and each protruding column 20321 corresponds to a plug-in hole 23121, which improves the connection reliability between the lower damping pad 2032 and the mounting box body 2301. For example, the protruding column 20321 is provided with three, four, six, eight, etc., and the number of plug-in holes 23121 can be adapted accordingly. At the same time, the protruding column 20321 can be a cylinder, and the corresponding plug-in hole 23121 is a round hole. Or, the protruding column 20321 is a square column, and the corresponding plug-in hole 23121 is a square hole. Here, only an example is given. In actual use, the extension end of each protruding column 20321 is provided in a hemispherical shape, which is convenient for insertion into the corresponding plug-in hole 23121.

[0089] Alternatively, the mounting box body 2301 can be protrudingly provided with a protruding column 20321 at the bottom of the corresponding first recess 23101 towards the side close to the mounting box cover 2302, and the lower damping pad 2032 is concavely provided with a plug-in hole 23121 away from the upper damping pad 2031, as long as the plug-in cooperation of the protruding column 20321 and the plug-in hole 23121 can be used to achieve the detachable connection between the lower damping pad 2032 and the mounting box body 2301.

[0090] In other embodiments, the damping pad 2003 in the third damping member 203 can also be provided with three, four, etc., as long as the accommodating grooves 2030 corresponding to the plurality of damping pads 2003 can collectively surround the assembly space 2050, so that each damping pad 2003 is installed between the air pump 21 and the air pump inner box 231, which can play a role in one-time vibration absorption.

[0091] Please refer to FIG. 14 and FIG. 25, in yet another embodiment, the air pump inner box 231 has a central axis, for example, along the direction of Z axis. The fourth damping member 204 includes at least two sealing plugs 2041 arranged at intervals around the central axis, each of which is connected with the air pump inner box 231 and used to connect the box body 10. In this way, on the one hand, it is equivalent to providing a plurality of connection points arranged at intervals between the air pump inner box 231 and the box body 10, improving the connection reliability of the two; on the other hand, it is equivalent to providing a plurality of sealing plugs 2041 between the air pump inner box 231 and the box body 10, improving the damping effect. For example, it can include two sealing plugs 2041 opposite and spaced along the X axis.

[0092] As shown in FIG. 14, FIG. 17, FIG. 20, FIG. 21, FIG. 22 and FIG. 25, the connecting pipeline 210 on the air pump 21 can extend out through the mounting box cover 2302, at this time the mounting box cover 2302 is configured with a through hole for the connecting pipeline 210 to pass through. The connecting pipeline 210 includes an air inlet pipe 211 and an air outlet pipe 212, which extend out of the mounting box cover 2302 through a through hole respectively. The mounting box cover 2302 is closer to the box body 10 than the mounting box body 2301. Therefore, each sealing plug 2041 is connected with the mounting box cover 2302. Specifically, the outer side of the mounting box cover 2302 can be provided with at least two assembly protrusions 23021 arranged at intervals around the central axis, and each sealing plug 2041 is configured with an assembly clamping groove 20411, and each sealing plug 2041 corresponds to an assembly protrusion 23021 and is clamped and matched with the corresponding assembly protrusion 23021 through the assembly clamping groove 20411, realizing the assembly of each sealing plug 2041 relative to the mounting box cover 2302.

[0093] Alternatively, each sealing plug 2041 can be provided with an assembly protrusion 23021, and the mounting box cover 2302 can be provided with an assembly clamping groove 20411, as long as the assembly of each sealing plug 2041 relative to the mounting box cover 2302 is realized through the cooperation of the assembly protrusion 23021 and the assembly clamping groove 20411, and then the air pump inner box 231 and the box body 10 can be reliably connected through the sealing plug 2041.

[0094] In actual use, the through hole for the connecting pipeline 210 to pass through can be provided through one of the assembly protrusions 23021, and therefore the assembly clamping groove 20411 on the sealing plug 2041 corresponding to the assembly protrusion 23021 is provided through, for the connecting pipeline 210 to lead out.

[0095] In other embodiments, the sealing plug 2041 can also be provided as three, four or the like. As long as it can be connected with the box body 10 through a plurality of sealing plugs 2041, it can play a role in secondary vibration absorption.

[0096] In some embodiments, each of the aforementioned vibration reduction pads 2003 and each of the aforementioned sealing plugs 2041 are made of rubber, silicone, or the like.

[0097] Referring to FIGS. 23-25, in the present embodiment, the box body 10 is further provided with hanging grooves 131, and the fourth vibration reduction member 204 is clamped in the hanging grooves 131, i.e., each of the sealing plugs 2041 is clamped in the hanging grooves 131, and the number of the hanging grooves 131 is matched with the number of the sealing plugs 2041.

[0098] Further, the box body 10 is provided with at least two hanging arms 13 arranged along the center axis and protruding from one side of the box body 10 along the thickness direction of the box body 10, each of the hanging arms 13 is provided with a hanging groove 131, and each of the sealing plugs 2041 of the fourth vibration reduction member 204 is clamped in a corresponding hanging groove 131. The hanging arm 13 can be arranged in a U shape, including a horizontal arm and two vertical arms connected to the two sides of the horizontal arm, and each of the vertical arms is fixed to the box body 10. The two vertical arms and the horizontal arm jointly form the hanging groove 131, and the sealing plug 2041 is inserted into the corresponding hanging groove 131 and overlapped on the corresponding hanging arm 13, so as to achieve the suspension of the air pump 21 relative to the box body 10.

[0099] In some specific embodiments, the air pump inner box 231 is connected with a sealing plug 2041 on each side along the X-axis direction, and each of the sealing plugs 2041 corresponds to a hanging groove 131 formed by a corresponding hanging arm 13. Alternatively, the box body 10 can be provided with a mounting block protruding from one side of the box body 10 along the thickness direction of the box body 10, and each of the mounting blocks is provided with a hanging groove 131 for cooperating with the sealing plug 2041. As long as the air pump 21 and the air pump inner box 231 can be stably connected to the box body 10 through the mounting block and achieve secondary vibration absorption, it is acceptable.

[0100] In addition, the refrigerator 1000 provided by an embodiment of the present application includes a refrigeration liner 200 and the nitrogen generating device 100 described above; the nitrogen generating device 100 is installed in the refrigeration liner 200. That is, the refrigerator 1000 installs the nitrogen generating device 100 as a separate module in the refrigeration liner 200, so that the nitrogen generating device 100 and the heat preservation layer outside the refrigeration liner 200 are arranged on both sides of the refrigeration liner 200, and the heat preservation layer of the refrigeration liner 200 is not damaged, so as to ensure the refrigeration and heat preservation effect of the refrigeration liner 200.

[0101] As shown in FIG. 2 and FIG. 3, in an embodiment, the refrigeration liner 200 is formed with an extension protrusion 2001, which is arranged below the box body 10 and abuts against the box body 10; so that the refrigeration liner 200 can use the extension protrusion 2001 to assist in supporting the box body 10, which can further improve the reliability of the nitrogen generating device 100 installed in the refrigeration liner 200. Here, the extension protrusion 2001 is arranged at the rear of the box body 10, and specifically, a part of the liner wall of the refrigeration liner 200 is inwardly recessed and formed, and the extension protrusion 2001 extends along the length direction of the box body 10, so that one end of the box body 10 in the width direction can abut against the extension protrusion 2001 of the refrigeration liner 200. It should be noted that the two mounting brackets 30 of the nitrogen generating device 100 can be respectively attached to the two side liner walls of the refrigeration liner 200, and fixed by screws or other connecting members.

[0102] As shown in FIG. 3, in this embodiment, the extension protrusion 2001 is formed with a second recessed cavity 2002, which is used to accommodate the air pump 21, and specifically, the air pump box 23 assembled with the air pump 21 can be put into the second recessed cavity 2002, so that the air pump box 23 of the air pump 21 does not directly contact the extension protrusion 2001, so that the vibration generated by the air pump 21 during operation will not be directly transmitted to the refrigeration liner 200, which can ensure the safety and reliability of the refrigeration liner 200 after long-term use. Here, the size of the second recessed cavity 2002 in the length direction of the box body 10 is greater than the width of the air pump box 23.

[0103] Referring to FIG. 1, further, the refrigerator 1000 further includes a cabinet, and the refrigeration liner 200 is configured in the cabinet. In actual use, the refrigerator 1000 further includes a door (not shown in the figure), which is rotatably connected to the cabinet by a hinge.

[0104] Compared with the related art, the nitrogen making device 100 and the refrigerator 1000 have at least the following advantages: the nitrogen making device 100 is assembled based on the box body 10, so that the modular design of the nitrogen making device 100 is realized, the nitrogen making device 100 can be independently produced and manufactured, and can be assembled in the refrigerator 1000 at one time. Therefore, the structure of the nitrogen making device 100 can be simplified, the production of the nitrogen making device 100 and the assembly efficiency of the nitrogen making device 100 in the refrigerator 1000 can be improved, the cost can be reduced, the leakage point during operation of the nitrogen making device 100 can be reduced, the vibration transmission to the cold storage liner 200 can be weakened, the safety and reliability of the nitrogen making device 100 and the cold storage liner 200 of the refrigerator 1000 after long-term use can be improved, the air pump 21 is installed on the box body 10, so that the air pump 21 does not damage the heat preservation layer of the cold storage liner 200 when the nitrogen making device 100 is assembled in the refrigerator 1000, the cold storage liner 200 does not leak cold, and the energy consumption of the refrigerator 1000 can be reduced.

[0105] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but it should be considered that any combination of the technical features is within the scope of the present disclosure as long as the combination does not result in contradictions.

[0106] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these are within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A nitrogen generating device applied to a refrigerator, characterized by, The application relates to a refrigerator, comprising: a box body; a nitrogen production assembly installed on the box body, the nitrogen production assembly comprising a gas pump and a molecular sieve, the gas pump being in communication with the molecular sieve and used for providing compressed air for the molecular sieve; a mounting bracket installed on the box body and used for connecting a refrigeration liner of the refrigerator; and a fresh-keeping drawer slidably connected to the mounting bracket, a fresh-keeping chamber being formed between the fresh-keeping drawer and the box body, the fresh-keeping chamber being in communication with a nitrogen outlet of the molecular sieve. The molecular sieve is accommodated in the box body; 2. The nitrogen generating plant of claim 1, wherein, wherein a nitrogen discharge port is formed in the box body, and the nitrogen outlet is in communication with the fresh-keeping chamber through the nitrogen discharge port. The gas pump is installed on the box body in a suspended manner; 3. The nitrogen generating plant of claim 1, wherein, wherein the gas pump is arranged outside the fresh-keeping drawer. The nitrogen production assembly further comprises a gas pump box, and the gas pump is installed in the gas pump box; 4. The nitrogen generating plant of claim 3, wherein, a first damping member is installed on the gas pump box, and the gas pump box can be suspended on the box body through the first damping member. The nitrogen production assembly further comprises a gas pump box, the gas pump box comprising a gas pump inner box and a gas pump outer box, the gas pump outer box inwardly surrounding a first sealed chamber, and the gas pump inner box being accommodated in the first sealed chamber; 5. The nitrogen generating plant of claim 1, wherein, the gas pump inner box inwardly surrounding a second sealed chamber, and the gas pump being accommodated in the second sealed chamber. The nitrogen production assembly further comprises a gas pump box, the gas pump box comprising a gas pump inner box and a gas pump outer box, the gas pump inner box being installed in the gas pump outer box, and the gas pump inner box and the gas pump outer box being abutted and limited by a second damping member; 6. The nitrogen generating plant of claim 1, wherein, wherein the gas pump is installed in the gas pump inner box, and the gas pump and the gas pump inner box are abutted and limited by a third damping member. The third damping member comprises an upper damping pad and a lower damping pad, and the upper damping pad and the lower damping pad are arranged at the upper and lower ends of the gas pump; 7. The nitrogen generating plant of claim 6, wherein, one of the upper damping pad and the gas pump inner box is provided with a limiting rib, and the other is provided with a first limiting gap, and the limiting rib is clamped at the first limiting gap; one of the lower damping pad and the gas pump inner box is provided with a protruding column, and the other is provided with a plug hole, and the protruding column is inserted into the plug hole. The nitrogen production assembly further comprises:

8. The nitrogen generating plant of claim 1, wherein, a gas pump inner box comprising a mounting box body and a mounting box cover, the two being assembled and fastened to jointly surround a second sealed chamber; a third damping member arranged in the second sealed chamber and configured with an assembly space for limiting the gas pump; and a fourth damping member installed outside the gas pump inner box and used for connecting the box body. The third damping member comprises at least two damping pads provided with accommodating grooves, the at least two damping pads jointly defining the assembly space, at least one of the damping pads being arranged on the mounting box body, and at least another of the damping pads being arranged on the mounting box cover.

9. The nitrogen generating plant of claim 8, wherein, The mounting box body and the corresponding damping pad are detachably connected, and / or the mounting box cover and the corresponding damping pad are detachably connected.

10. The nitrogen generating plant of claim 9, wherein, ​ 11. The nitrogen generating plant of claim 10, wherein, The mounting box cover corresponds to an upper damping pad, one of the upper damping pad and the mounting box cover is provided with a limiting rib, and the other is provided with a second limiting notch, and the limiting rib is clamped in the second limiting notch; and / or, The mounting box body corresponds to a lower damping pad, one of the lower damping pad and the mounting box body is provided with a protruding column, and the other is provided with a plug hole, and the protruding column is inserted into the plug hole.

12. The nitrogen generating plant of claim 9, wherein, Each of the damping pads is provided with a constraint portion at the groove wall corresponding to the accommodating groove, and the constraint portion is used for abutting against the air pump.

13. The nitrogen generating plant of claim 8, wherein, The air pump inner box has a central axis; The fourth damping member includes at least two sealing plugs arranged at intervals around the central axis, each of the sealing plugs is connected with the air pump inner box, and is used for connecting the box body.

14. The nitrogen generating plant of claim 8, wherein, One of the fourth damping member and the air pump inner box is provided with an assembly protrusion, and the other is provided with an assembly clamping groove, and the assembly protrusion is inserted into the assembly clamping groove.

15. The nitrogen generating plant of claim 13, wherein, One of the fourth damping member and the air pump inner box is provided with an assembly protrusion, and the other is provided with an assembly clamping groove, and the assembly protrusion is inserted into the assembly clamping groove.

16. The nitrogen generating plant of claim 13, wherein, The box body is provided with a hanging groove, and the fourth damping member is clamped in the hanging groove.

17. The nitrogen generating plant of claim 16, wherein, The box body is provided with at least two hanging arms arranged at intervals on one side in the thickness direction of the box body, each of the hanging arms surrounds one of the hanging grooves, and each of the sealing plugs in the fourth damping member corresponds to one of the hanging grooves.

18. The nitrogen generating plant of claim 1, wherein, The number of the mounting brackets is two, and the two mounting brackets are arranged on both sides of the box body in the length direction of the box body and are used for connecting the refrigeration liner of the refrigerator. The fresh-keeping drawer is arranged between the two mounting brackets and is connected with the two mounting brackets in a sliding manner.

19. A refrigerator characterized by comprising: The nitrogen making device includes a refrigeration liner and the nitrogen making device according to any one of claims 1 to 18. The nitrogen making device is mounted in the refrigeration liner.

20. The refrigerator of claim 19, wherein, An extension protrusion is formed on the refrigeration liner, the extension protrusion is arranged below the box body and abuts against the box body. The extension protrusion is surrounded by a second recess, and the second recess is used for accommodating the air pump.

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