Nitrogen making device and refrigerator

Abstract

The nitrogen making device comprises a box body, a nitrogen making assembly, a mounting support, a fresh-keeping drawer and a nitrogen making assembly, the nitrogen making assembly and the mounting support are mounted on the box body, the nitrogen making assembly comprises an air pump and a molecular sieve, and the air pump communicates with the molecular sieve and is used for providing compressed air for the molecular sieve; the mounting bracket is used for connecting a refrigeration liner of the refrigerator; the fresh-keeping drawer is slidably connected to the mounting support, a fresh-keeping chamber can be defined between the fresh-keeping drawer and the box body, and the fresh-keeping chamber communicates with the nitrogen outlet of the molecular sieve. In this way, modular design of the nitrogen making device in the refrigerator can be achieved, the structure of the nitrogen making device can be simplified, the production efficiency of the nitrogen making device and the assembling efficiency of the nitrogen making device in the refrigerator are improved, and the effect of reducing cost is achieved; in addition, leakage points during operation of the nitrogen making device can be reduced, vibration transmission to the refrigeration inner container is weakened, and the safety and reliability of the nitrogen making device and the refrigeration inner container of the refrigerator after long-term use are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field related to refrigerator freshness preservation, and particularly relates to a nitrogen generation device and a refrigerator. Background Art

[0002] Since food cells have a respiration function, and the cells consume oxygen during respiration to decompose their own nutrients, resulting in food spoilage. Therefore, a refrigerator is usually used for food freshness preservation. For example, a vacuum freshness preservation chamber is provided inside the refrigerator body, or the nitrogen concentration in the freshness preservation chamber is increased. The purpose of both methods is to reduce the oxygen concentration inside the refrigerator, inhibit the respiration of food cells, thereby effectively delaying food spoilage and extending the freshness preservation time.

[0003] In the PSA (Pressure Swing Adsorption) nitrogen generation system of a refrigerator, an air pump is required to pump air into the molecular sieve. By utilizing the structural characteristics of the molecular sieve, the nitrogen in the air is separated and discharged into the freshness preservation drawer of the refrigerator to achieve the purpose of nitrogen freshness preservation. Currently, in the PSA nitrogen generation system of existing refrigerators, the air pump, molecular sieve, and freshness preservation drawer are independent of each other, and air pipes are used to connect the air pump, molecular sieve, and insurance drawer. Therefore, during the manufacturing process of the refrigerator, the air pump, molecular sieve, and freshness preservation drawer need to be assembled on the inner liner of the refrigerator body through a mounting plate in sequence. This not only reduces the production and assembly efficiency and increases the cost, but also there are many leakage points during the operation of the PSA nitrogen generation system. The setting of the air pump also damages the insulation layer of the refrigerator's refrigerating inner liner, resulting in cold leakage. Summary of the Invention

[0004] In view of this, it is necessary to provide a nitrogen generation device and a refrigerator for solving the above technical problems.

[0005] A nitrogen generation device is applied to a refrigerator. The nitrogen generation device includes:

[0006] A box body;

[0007] A nitrogen generation component is installed on the box body. The nitrogen generation component includes an air pump and a molecular sieve. The air pump is communicated with the molecular sieve and is used to provide compressed air for the molecular sieve;

[0008] A mounting bracket is installed on the box body and is used to connect the refrigerating inner liner of the refrigerator;

[0009] A freshness preservation drawer is slidably connected to the mounting bracket. A freshness preservation chamber can be formed by enclosing between the freshness preservation drawer and the box body. The freshness preservation chamber is communicated with the nitrogen outlet of the molecular sieve.

[0010] It can be understood that since the nitrogen generation device is assembled with the box body as the installation basis, modular design of the nitrogen generation device can be realized, enabling the nitrogen generation device to be independently manufactured and assembled in the refrigerator at one time. In this way, not only can the structure of the nitrogen generation device be simplified, the production efficiency of the nitrogen generation device and its assembly efficiency during assembly in the refrigerator be improved, which has the effect of reducing costs; but also the leakage points during the operation of the nitrogen generation device can be reduced, and the vibration transmission to the refrigerating inner liner can be weakened, which has the effect of enhancing the safety and reliability of the nitrogen generation device and the refrigerating inner liner of the refrigerator after long-term use; in addition, since the air pump is installed on the box body, when the nitrogen generation device is assembled and applied in the refrigerator, the air pump will not damage the heat preservation layer of the refrigerating inner liner and will not cause cold leakage of the refrigerating inner liner, which has the effect of reducing the working energy consumption of the refrigerator.

[0011] In one embodiment, the molecular sieve is accommodated in the box body;

[0012] Wherein, a nitrogen discharge port is formed on the box body, and the nitrogen outlet communicates with the fresh-keeping chamber through the nitrogen discharge port.

[0013] It can be understood that by installing the molecular sieve in the box body and communicating it with the fresh-keeping chamber through the nitrogen discharge port on the box body, the nitrogen discharged from the nitrogen outlet of the molecular sieve can directly flow to the fresh-keeping chamber through the nitrogen discharge port on the box body. On the one hand, this can simplify the gas path connecting the molecular sieve and the fresh-keeping chamber and eliminate the gas path connector, which has the effect of reducing costs and reducing the leakage points of the nitrogen generation device; on the other hand, the box body can also be used to install and protect the molecular sieve.

[0014] In one embodiment, the air pump is installed on the box body in a suspended manner;

[0015] Wherein, the air pump is arranged outside the fresh-keeping drawer.

[0016] It can be understood that by suspending the air pump on the box body and arranging it outside the fresh-keeping drawer, the assembly of the air pump on the box body does not occupy the space of the box body, which can make the nitrogen generation device compact in volume, and does not affect the integration of the nitrogen generation device and the storage and preservation of the fresh-keeping chamber, enabling the fresh-keeping chamber to provide a larger storage capacity for users.

[0017] In one embodiment, the nitrogen generation assembly further includes an air pump box, and the air pump is installed in the air pump box;

[0018] Wherein, a first shock-absorbing pad is installed on the air pump box, and the air pump box can be suspended on the box body through the first shock-absorbing pad.

[0019] It can be understood that the air pump is installed in the air pump box and suspended on the box body through the first damping pad, so that the first damping pad can buffer the transmission of the vibration generated during the operation of the air pump to the box body, further weakening the vibration transmission from the nitrogen generation device to the refrigerating inner liner during operation, and further improving the safety and reliability of the nitrogen generation device and the refrigerating inner liner of the refrigerator after long-term use.

[0020] In one embodiment, the nitrogen generation assembly further includes an air pump box, which includes an inner air pump box and an outer air pump box. The outer air pump box encloses inward to form a first sealed chamber, and the inner air pump box is received in the first sealed chamber;

[0021] The inner air pump box encloses inward to form a second sealed chamber, and the air pump is received in the second sealed chamber.

[0022] It can be understood that using a double-layer box body to wrap and seal the air pump can, on the one hand, effectively reduce the noise during the operation of the air pump, enabling the nitrogen generation device to operate in a relatively quiet state in the home environment; on the other hand, it can also slow down the heat exchange between the heat generated during the operation of the air pump and the outside world, not damaging the low-temperature storage environment in the refrigerating inner liner, and being beneficial to the preservation of the refrigerating chamber.

[0023] In one embodiment, the nitrogen generation assembly further includes an air pump box, which includes an inner air pump box and an outer air pump box. The inner air pump box is installed in the outer air pump box, and the inner air pump box and the outer air pump box are in abutting limit through a second damping pad;

[0024] Wherein, the air pump is installed in the inner air pump box, and the air pump and the inner air pump box are in abutting limit through a third damping pad.

[0025] It can be understood that by using the elastic deformation of the second damping pad and the third damping pad, it can play a dual damping role in the vibration generated during the operation of the air pump, achieving a good damping effect on the air pump and reducing the vibration of the air pump to a very weak state.

[0026] In one embodiment, the third damping pad includes 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 air pump;

[0027] One of the upper damping pad and the inner air pump box protrudes with a limiting rib, and the other is provided with a limiting notch, and the limiting rib is clamped at the limiting notch;

[0028] One of the lower damping pad and the inner air pump box protrudes with a convex column, and the other is recessed with a plug hole, and the convex column is inserted into the plug hole.

[0029] It can be understood that the above upper shock-absorbing pad and lower shock-absorbing pad are used to constrain and damp the assembly of the air pump in the inner box of the air pump, so as to prevent the air pump from disengaging from the third shock-absorbing pad when the air pump box is tilted, dropped or flipped, thereby ensuring that the third shock-absorbing pad can continuously and effectively damp the air pump.

[0030] In one embodiment, the number of the mounting brackets is configured to be two, and the two mounting brackets are arranged on both sides of the box body in the length direction of the box body;

[0031] Wherein, the fresh-keeping drawer is arranged between the two mounting brackets and is respectively slidably connected to the two mounting brackets.

[0032] It can be understood that using two mounting brackets to carry the box body and the fresh-keeping drawer enables the nitrogen generation device to make full use of its own structure to provide users with the maximum storage capacity, and improves the stability of the nitrogen generation device during subsequent installation in the refrigerating inner liner of the refrigerator.

[0033] In addition, the present application also claims protection for a refrigerator, including a refrigerating inner liner and the nitrogen generation device described above;

[0034] The nitrogen generation device is installed in the refrigerating inner liner.

[0035] In one embodiment, an extending convex part is formed on the refrigerating inner liner, and the extending convex part is arranged below the box body and abuts against the box body;

[0036] Wherein, the extending convex part encloses to form a concave cavity, and the concave cavity is used for accommodating the air pump.

[0037] It can be understood that using the extending convex part of the refrigerating inner liner to assist in supporting the box body can further improve the reliability of the installation of the nitrogen generation device in the refrigerating inner liner, and when the nitrogen generation device works, the vibration generated when the air pump works will not be directly transmitted to the refrigerating inner liner, thereby ensuring the safety and reliability of the refrigerating inner liner after long-term use.

[0038] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0039] The nitrogen generation device and refrigerator claimed in this application. Since the nitrogen generation device is assembled with the box body as the installation basis, modular design of the nitrogen generation device can be achieved, enabling the independent production and manufacturing of the nitrogen generation device and allowing it to be assembled in the refrigerator at one time. In this way, not only can the structure of the nitrogen generation device be simplified, the production efficiency of the nitrogen generation device and its assembly efficiency during assembly in the refrigerator be improved, which has the effect of reducing costs; but also the leakage points during the operation of the nitrogen generation device can be reduced, and the vibration transmission to the refrigerating inner liner can be weakened, enhancing the safety and reliability of the nitrogen generation device and the refrigerating inner liner of the refrigerator after long-term use; in addition, since the air pump is installed on the box body, when the nitrogen generation device is assembled and applied in the refrigerator, the air pump will not damage the heat insulation layer of the refrigerating inner liner and will not cause cold leakage of the refrigerating inner liner, which has the effect of reducing the working energy consumption of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 It is a schematic structural diagram of a refrigerator provided by an embodiment of the present application.

[0042] Figure 2 It is a schematic structural diagram of the nitrogen generation device during assembly on the refrigerating inner liner in the present application, where the fresh-keeping drawer is in a hidden state.

[0043] Figure 3 It is a partial structural diagram of the refrigerator in the present application, where the nitrogen generation device is in a hidden state.

[0044] Figure 4 It is a schematic structural diagram of the air pump assembled to the box body through the air pump box in the present application.

[0045] Figure 5 It is a partial cross-sectional view of the air pump assembled to the box body through the air pump box in the present application.

[0046] Figure 6 It is an exploded view of the molecular sieve assembled to the box body in the present application.

[0047] Figure 7 It is a schematic structural diagram of the molecular sieve during assembly on the box main body in the present application.

[0048] Figure 8 It is a schematic structural diagram of the air pump assembled into the air pump box in the present application.

[0049] Figure 9This is a schematic structural view when the air pump is assembled into the air pump box in this application. Among them, the outer box of the air pump is in a hidden state.

[0050] Figure 10 This is a cross-sectional view when the air pump is assembled into the inner box of the air pump in this application.

[0051] Figure 11 This is a schematic structural view when the second shock-absorbing pad is assembled onto the air pump in this application.

[0052] Figure 12 This is an exploded view when the box body and the mounting bracket are assembled in this application.

[0053] Figure 13 This is a schematic structural view of the upper shock-absorbing block in this application.

[0054] Reference numerals: 1000, refrigerator; 100, nitrogen generation device; 10, box body; 110, box main body; 120, cover plate; 101, first air pipe; 102, second air pipe; 103, third air pipe; 1031, solenoid valve; 11, nitrogen discharge port; 12, suspension carrier; 210, sealing ring; 220, sealing plug; 201, first shock-absorbing pad; 202, second shock-absorbing pad; 2021, upper shock-absorbing block; 20211, connecting main body; 20212, shock-absorbing box body; 20213, connecting rib; 2022, lower shock-absorbing block; 203, third shock-absorbing pad; 2031, upper shock-absorbing pad; 20311, limiting notch; 2032, lower shock-absorbing pad; 20321, convex column; 21, air pump; 211, intake pipe; 212, outlet pipe; 22, molecular sieve; 221, nitrogen outlet; 222, oxygen outlet; 23, air pump box; 231, inner box of air pump; 2310, second sealed chamber; 2311, limiting rib; 2312, insertion hole; 2313, convex buckle; 232, outer box of air pump; 2321, connecting lug; 2320, first sealed chamber; 2312, insertion hole; 30, mounting bracket; 301, screw; 31, slide rail; 40, fresh-keeping drawer; 200, refrigerating inner liner; 2001, extending convex part; 2002, concave cavity. Detailed implementation manners

[0055] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0056] It should be noted that when an element is referred to as being "provided on" another element, it can be directly provided on the other element or there can also be an intermediate element. When an element is considered to be "provided on" another element, it can be directly provided on the other element or there may be an intermediate element at the same time. When an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there may be an intermediate element at the same time.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of this invention are only for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0058] The nitrogen generation device 100 for which this application requests protection specifically refers to a nitrogen generation device applied to the refrigerating inner liner 200 of a refrigerator 1000.

[0059] As Figure 1 、 Figure 2 、 Figure 5 And Figure 6 As shown, the nitrogen generation device 100 provided by an embodiment of this application includes a box body 10, a nitrogen generation component, a mounting bracket 30, and a fresh-keeping drawer 40. The nitrogen generation component is installed on the box body 10. The nitrogen generation component includes an air pump 21 and a molecular sieve 22. The air pump 21 is communicated with the molecular sieve 22 and is used to provide compressed air for the molecular sieve 22. The mounting bracket 30 is installed on the box body 10 and is used to connect the refrigerating inner liner 200 of the refrigerator 1000. The fresh-keeping drawer 40 is slidably connected to the mounting bracket 30. A fresh-keeping chamber (not shown in the figure) can be formed by enclosing between the fresh-keeping drawer 40 and the box body 10. The fresh-keeping chamber is communicated with the nitrogen outlet 221 of the molecular sieve 22. Here, the pressure value of the compressed air provided by the air pump 21 for the molecular sieve 22 is a pressure value adapted to the working requirements of the molecular sieve 22, and specifically, the molecular sieve 22 is a tower-shaped molecular sieve. It should be noted that the specific structure and working principle of the above-mentioned molecular sieve 22 can adopt the conventional methods of the prior art and will not be elaborated here.

[0060] As described above, the nitrogen generation device 100 of the present application is assembled with the box body 10 as the installation basis. In this way, the modular design of the nitrogen generation device 100 can be realized, enabling the nitrogen generation device 100 to be independently manufactured and assembled once in the refrigerator 1000. Thus, not only can the structure of the nitrogen generation device 100 be simplified, and the production efficiency of the nitrogen generation device 100 and its assembly efficiency during assembly in the refrigerator 1000 be improved, which has the effect of reducing costs; but also the leakage points during the operation of the nitrogen generation device 100 can be reduced, and the vibration transmission to the refrigerating inner liner 200 can be weakened, which has the effect of enhancing the safety and reliability of the nitrogen generation device 100 and the refrigerating inner liner 200 of the refrigerator 1000 after long-term use; in addition, since the air pump 21 is installed on the box body 10, when the nitrogen generation device 100 is assembled and applied in the refrigerator 1000, the air pump 21 will not damage the insulation layer of the refrigerating inner liner 200 and will not cause cold leakage of the refrigerating inner liner 200, which has the effect of reducing the working energy consumption of the refrigerator 1000.

[0061] As Figure 2 , Figure 4 and Figure 5 shown, 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 does not occupy the space of the box body 10. In this way, the volume of the nitrogen generation device 100 can be made compact, and it will not affect the integration of the nitrogen generation device 100 and the storage and freshness preservation of the fresh-keeping chamber, enabling the fresh-keeping chamber to provide a larger storage capacity for users. Here, the air pump 21 is arranged behind the fresh-keeping drawer 40, and the air pump 21 can be suspended to the suspension carrier 12 of the box body 10 through the air pump box 23.

[0062] As Figure 4 , Figure 5 and Figure 8 shown, in an embodiment, a first vibration damping pad 201 is installed on the air pump box 23, and the air pump box 23 can be suspended to the box body 10 through the first vibration damping pad 201, so that a considerable gap is left between the air pump box 23 and the box body 10, enabling the first vibration damping pad 201 to play a buffering role in the vibration transmission of the box body 10 caused by the vibration generated during the operation of the air pump 21. In this way, the vibration transmission of the nitrogen generation device 100 to the refrigerating inner liner 200 during operation can be further weakened, which has the effect of further enhancing the safety and reliability of the nitrogen generation device 100 and the refrigerating inner liner 200 of the refrigerator 1000 after long-term use. Here, the first vibration damping pad 201 is a relatively soft and deformable elastic body under force. Specifically, the material of the first vibration damping pad 201 can be configured as rubber, silica gel, etc.

[0063] As Figure 5As shown, in this embodiment, two connecting lugs 2321 are formed on the air pump box 23, and the two connecting lugs 2321 are 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 pads 201 is configured to be two, and the two first damping pads 201 are respectively sleeved on the corresponding connecting lugs 2321, and the air pump box 23 can be suspended on the suspension carrier 12 of the box body 10 through the two first damping pads 201, so that the air pump 21 has good balance when suspended on the box body 10 through the air pump box 23. It can be understood that in other embodiments, the air pump box 23 can also be suspended on the suspension carrier 12 of the box body 10 through three, four or even more first damping pads 201.

[0064] As Figure 6 , Figure 7 shown, in an embodiment, the molecular sieve 22 is accommodated in the box body 10; a nitrogen discharge port 11 is opened on the box body 10, and the nitrogen outlet 221 communicates with the fresh-keeping chamber through the nitrogen discharge port 11, so that the nitrogen discharged from the nitrogen outlet 221 of the molecular sieve 22 can directly flow to the fresh-keeping chamber through the nitrogen discharge port 11 on the box body 10. On the one hand, this can simplify the gas path connecting the molecular sieve 22 and the fresh-keeping chamber and eliminate the gas path joint, which has the effects of reducing costs and reducing the leakage points of the nitrogen generation 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 air pipe 101, and the nitrogen outlet 221 on the molecular sieve 22 communicates with the nitrogen discharge port 11 through the second air pipe 102. Here, the box body 10 includes a box main body 110 and a cover plate 120, the molecular sieve 22 is installed on the box main body 110, and is covered and sealed with the cover plate 120.

[0065] As Figure 7 shown, in this embodiment, the molecular sieve 22 also has an oxygen outlet 222, and the oxygen outlet 222 transmits oxygen outward through the third air pipe 103. Specifically, a solenoid valve 1031 can be installed on the third air pipe 103 to control the opening and closing of the third air pipe 103. Combining with the working principle of the molecular sieve 22, the nitrogen generation amount of the molecular sieve 22 during the nitrogen generation cycle can be realized to meet the fresh-keeping requirements of the fresh-keeping chamber in the nitrogen generation device 100.

[0066] As Figure 5As shown, in one embodiment, the air pump box 23 includes an inner air pump box 231 and an outer air pump box 232. The outer air pump box 232 encloses inward to form a first sealed chamber 2320, and the inner air pump box 231 is received in the first sealed chamber 2320. The inner air pump box 231 encloses inward to form a second sealed chamber 2310, and the air pump 21 is received in the second sealed chamber 2310. That is to say, the air pump box 23 uses a double-layer box body to wrap and seal the air pump 21. On the one hand, this can make the inner air pump box 231 and the outer air pump box 232 play a role in superimposing noise reduction effects, effectively reducing the noise generated by the movement of the air pump 21. Specifically, the noise generated when the air pump 21 works can be reduced to about 40 db, so that the operation of the nitrogen generation device 100 can reach a relatively quiet state in the home environment. On the other hand, it can also slow down the heat exchange between the heat generated when the air pump 21 works and the outside world, without destroying the low-temperature storage environment in the refrigerating chamber of the refrigerating inner liner 200, which is beneficial to the preservation of the refrigerating chamber. Here, the inner air pump box 231 and the outer air pump box 232 of this embodiment are both configured as upper and lower half-box structures, and sealing rings 210 are respectively assembled between the two half-boxes of the inner air pump box 231 and the outer air pump box 232, so that the inner air pump box 231 and the outer air pump box 232 respectively enclose inward to form corresponding first sealed chambers 2320 and corresponding second sealed chambers 2310.

[0067] As Figure 5 , Figure 9 As shown, in one embodiment, an intake pipe 211 and an outlet pipe 212 are connected and communicated to the air pump 21. The intake pipe 211 and the outlet pipe 212 sequentially pass through the inner air pump box 231 and the outer air pump box 232, and then extend outward through one of the connecting lugs 2321, so that when the air pump 21 works, it can suck air into the refrigerating chamber where the refrigerating inner liner 200 is located through the intake pipe 211, and then discharge it to the molecular sieve 22 through the outlet pipe 212. Here, the parts of the intake pipe 211 and the outlet pipe 212 located in the inner air pump box 231 and the outer air pump box 232 are respectively assembled and sealed with the corresponding inner air pump box 231 and the corresponding outer air pump box 232 by sealing plugs 220.

[0068] As Figure 5 , Figure 9 As shown, in one embodiment, the inner air pump box 231 and the outer air pump box 232 are abutted and limited by a second damping pad 202. That is to say, the inner air pump box 231 is installed in the outer air pump box 232 and contacts the outer air pump box 232 through the second damping pad 202, realizing the indirect contact between the inner air pump box 231 and the outer air pump box 232. In this way, the elastic deformation of the second damping pad 202 can be used to reduce the transmission of the vibration generated by the inner air pump box 231 driven by the air pump 21 to the outer air pump box 232, and play a role in secondary damping for the air pump 21.

[0069] AsFigure 9 As shown, in this embodiment, the second vibration damping pad 202 includes four upper vibration damping blocks 2021 and four lower vibration damping blocks 2022. The four upper vibration damping blocks 2021 are installed at four corner positions on the top of the air pump inner box 231, and the four lower vibration damping blocks 2022 are installed at four corner positions on the bottom of the air pump inner box 231. Moreover, the air pump inner box 231 can abut against the air pump outer box 232 through the four upper vibration damping blocks 2021 and the four lower vibration damping blocks 2022, and damp the vibration transmission between the air pump inner box 231 and the air pump outer box 232. It can be understood that in other embodiments, the number of the upper vibration damping blocks 2021 and the lower vibration damping blocks 2022 in the second vibration damping pad 202 can also be configured as two, three, five, or even more. Specifically, they can be arranged diagonally on the air pump inner box 231, which will not be elaborated here.

[0070] As Figure 13 shown, in this embodiment, the upper vibration damping block 2021 includes a connecting body 20211, a vibration damping box body 20212, and four connecting rib strips 20213. The four connecting rib strips 20213 are arranged in a pairwise symmetric manner between the connecting body 20211 and the vibration damping box body 20212, and are respectively connected to the connecting body 20211 and the vibration damping box body 20212 as a whole. Among them, the connecting body 20211 is arranged at a corner position of the air pump inner box 231, and the connecting body 20211 can be attached to three end faces corresponding to the corner on the air pump inner box 231, and is engaged with the corresponding buckle 2313 on the air pump inner box 231 in a snap-fit manner. So that the upper vibration damping block 2021 can abut and limit the air pump outer box 232 with the vibration damping box body 20212, and utilize the elastic deformation of the four connecting rib strips 20213 and the vibration damping box body 20212 to achieve the buffering when the vibration of the air pump inner box 231 is transmitted on the air pump outer box 232. Here, the structure of the lower vibration damping block 2022 is the same as that of the upper vibration damping block 2021, which will not be elaborated here.

[0071] As Figure 5 、 Figure 10 and Figure 11 shown, in an embodiment, the air pump 21 and the air pump inner box 231 are abutted and limited through a third vibration damping pad 203. That is to say, the air pump 21 is installed in the air pump inner box 231 and contacts the air pump inner box 231 through the third vibration damping pad 203, and realizes the indirect contact between the air pump 21 and the air pump inner box 231. In this way, the elastic deformation of the third vibration damping pad 203 can be utilized to reduce the transmission of the vibration generated when the air pump 21 works to the air pump inner box 231, and play a role in primary vibration damping for the air pump 21.

[0072] As Figure 5 、 Figure 10 and Figure 11As shown, in this embodiment, the third shock absorber pad 203 includes an upper shock absorber pad 2031 and a lower shock absorber pad 2032. The upper shock absorber pad 2031 and the lower shock absorber pad 2032 are arranged at the upper and lower ends of the air pump 21. Specifically, the upper shock absorber pad 2031 and the lower shock absorber pad 2032 can be sleeved on the upper and lower ends of the air pump 21, so as to realize the assembly limit when the upper shock absorber pad 2031 and the lower shock absorber pad 2032 are assembled on the air pump 21.

[0073] As Figure 10 , Figure 11 shown, in this embodiment, one of the upper shock absorber pad 2031 and the inner box 231 of the air pump protrudes with a limiting rib 2311, and the other is provided with a limiting notch 20311. The limiting rib 2311 is clamped at the limiting notch 20311, so as to realize the assembly limit between the upper shock absorber pad 2031 and the inner box 231 of the air pump. In this way, when the air pump box 23 is tilted, dropped or flipped, the air pump 21 can be prevented from disengaging from the upper shock absorber pad 2031, so as to ensure that the upper shock absorber pad 2031 can continuously and effectively damp the air pump 21. Here, the limiting rib 2311 is arranged on the inner box 231 of the air pump and is integrally connected with the inner box 231 of the air pump. The limiting notch 20311 is arranged on the upper shock absorber pad 2031. Among them, the number of the limiting ribs 2311 is configured to be two. It can be understood that in other embodiments, the limiting ribs can also be arranged on the upper shock absorber pad 2031, and the limiting notches can be arranged on the inner box 231 of the air pump, which will not be elaborated here.

[0074] As Figure 10 , Figure 11 shown, in this embodiment, one of the lower shock absorber pad 2032 and the inner box 231 of the air pump protrudes with a convex column 20321, and the other is recessed with a plug hole 2312. The convex column 20321 is arranged at the plug hole 2312, so as to realize the assembly limit between the lower shock absorber pad 2032 and the inner box 231 of the air pump. In this way, when the air pump box 23 is tilted, dropped or flipped, the air pump 21 can be prevented from disengaging from the lower shock absorber pad 2032, so as to ensure that the lower shock absorber pad 2032 can continuously damp the air pump 21. Here, the plug hole 2312 is arranged on the inner box 231 of the air pump, and the convex column 20321 is arranged on the lower shock absorber pad 2032. Among them, the convex column 20321 is configured in two rows, and the number of the convex columns 20321 in each row of the convex columns 20321 is three. It can be understood that in other embodiments, the convex column can also be arranged on the inner box 231 of the air pump, and the plug hole can be arranged on the lower shock absorber pad 2032, which will not be elaborated here.

[0075] As can be seen from the above, the air pump box 23 of this embodiment can utilize the elastic deformation of the second damping pad 202 and the third damping pad 203 to play a dual damping role in the vibration generated during the operation of the air pump 21; moreover, due to the different structures between the upper damping block 2021 and the lower damping block 2022 of the second damping pad 202, and between the upper damping pad 2031 and the lower damping pad 2032 of the third damping pad 203, their amplitudes, directions, frequencies, etc. are relatively independent of each other when undergoing flexible deformation. That is to say, the upper damping block 2021, the lower damping block 2022, the upper damping pad 2031 and the lower damping pad 2032 can perform their damping actions independently, so that the air pump box 23 can achieve a better damping effect on the air pump 21, reducing the vibration transmitted from the air pump to the air pump outer box 232 to a very weak state; combined with the fact that the air pump outer box 232 of the air pump box 23 is suspended to the box body 10 through the first damping pad 201, the vibration transmission from the air pump box 23 to the box body 10 is even weaker, so that the vibration generated when the air pump 21 operates will not affect the assembly of the box body 10 on the refrigerating inner liner 200.

[0076] As Figure 12 shown, in one 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 slidably connected to the two mounting brackets 30 respectively. That is to say, the nitrogen generation device 100 can use the two mounting brackets 30 to carry the box body 10 and the fresh-keeping drawer 40, that is, the number of the fresh-keeping drawers 40 is one, so that the nitrogen generation device 100 can make full use of its own structure to provide the user with the maximum storage capacity, and improve the stability of the subsequent installation of the nitrogen generation device 100 in the refrigerating inner liner 200 of the refrigerator 1000. Here, slide rails 31 are respectively installed on the two mounting brackets 30, and the fresh-keeping drawer 40 can be slidably connected to the mounting brackets 30 through the slide rails 31, wherein each mounting bracket 30 can be fixedly connected to the box body 10 through screws 301. It should be noted that a sealing ring (not shown in the figure) is embedded in the box body 10 of this embodiment. When the fresh-keeping drawer 40 retracts to the box body 10, the fresh-keeping drawer 40 can be in contact with and sealed by the sealing ring to form a fresh-keeping chamber.

[0077] In addition, the refrigerator 1000 provided by an embodiment of the present application includes a refrigerating inner liner 200 and the above-mentioned nitrogen generation device 100; the nitrogen generation device 100 is installed in the refrigerating inner liner 200. That is to say, the refrigerator 1000 takes the nitrogen generation device 100 as an independent module and installs it in the refrigerating inner liner 200, so that the nitrogen generation device 100 and the heat insulation layer outside the refrigerating inner liner 200 are arranged on both sides of the wall of the refrigerating inner liner 200, without damaging the heat insulation layer of the refrigerating inner liner 200, thereby ensuring the refrigerating and heat insulation effect of the refrigerating inner liner 200.

[0078] As Figure 2 , Figure 3 shown, in one embodiment, an extension protrusion 2001 is formed on the refrigerating inner liner 200. The extension protrusion 2001 is disposed below the box body 10 and abuts against the box body 10, so that the refrigerating inner liner 200 can use the extension protrusion 2001 to assist in supporting the box body 10, thereby further improving the reliability of the installation of the nitrogen generation device 100 in the refrigerating inner liner 200. Here, the extension protrusion 2001 is disposed behind the box body 10 and is specifically formed by the inward depression of the wall portion of the refrigerating inner liner 200. Among them, 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 refrigerating inner liner 200. It should be noted that the two mounting brackets 30 of the nitrogen generation device 100 can be respectively attached to the two side walls of the refrigerating inner liner 200 and fixed with connecting members such as screws.

[0079] As Figure 3 shown, in this embodiment, a concave cavity 2002 is formed by enclosing the extension protrusion 2001. The concave cavity 2002 is used to accommodate the air pump 21. Specifically, the air pump box 23 equipped with the air pump 21 can be placed into the concave cavity 2002, so that the air pump box 23 of the air pump 21 does not directly contact the extension protrusion 2001. In this way, the vibration generated when the air pump 21 works will not be directly transmitted to the refrigerating inner liner 200, thereby ensuring the safety and reliability of the refrigerating inner liner 200 after long-term use. Here, the dimension of the concave cavity 2002 in the length direction of the box body 10 is greater than the width of the air pump box 23.

[0080] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0081] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as it is within the spirit and scope of the present invention, appropriate changes and variations made to the above embodiments fall within the scope of the present invention claimed.

Claims

1. A nitrogen generating device, used in a refrigerator (1000), characterized in that: The nitrogen production device (100) comprises: Box body (10); a nitrogen production component, mounted on the box body (10), the nitrogen production component comprising an air pump (21) and a molecular sieve (22), the air pump (21) being in communication with the molecular sieve (22) for providing compressed air to the molecular sieve (22); A mounting bracket (30) mounted on the box body (10) and used for connecting to a refrigeration liner (200) of the refrigerator (1000); A fresh-keeping drawer (40) is slidably connected to the mounting bracket (30), and a fresh-keeping chamber can be enclosed between the fresh-keeping drawer (40) and the box body (10), and the fresh-keeping chamber is connected to the nitrogen outlet (221) of the molecular sieve (22).

2. The nitrogen production device according to claim 1, characterized in that: The molecular sieve (22) is contained in the box body (10); Wherein, a nitrogen exhaust port (11) is provided on the box body (10), and the nitrogen outlet (221) is connected to the fresh-keeping chamber through the nitrogen exhaust port (11).

3. The nitrogen production device according to claim 1, characterized in that: The air pump (21) is mounted on the box body (10) in a suspended manner; Wherein, the air pump (21) is arranged on the outside of the fresh-keeping drawer (40).

4. The nitrogen production device according to claim 3, characterized in that: The nitrogen production assembly further comprises an air pump box (23), wherein the air pump (21) is installed in the air pump box (23); Wherein, a first vibration-damping pad (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 vibration-damping pad (201).

5. The nitrogen generating device according to claim 1, characterized in that: The nitrogen production assembly further comprises an air pump box (23), wherein the air pump box (23) comprises an air pump inner box (231) and an air pump outer box (232), wherein the air pump outer box (232) is inwardly enclosed to form a first sealed chamber (2320), and the air pump inner box (231) is accommodated in the first sealed chamber (2320); The air pump inner box (231) is enclosed inwardly to form a second sealed chamber (2310), and the air pump (21) is accommodated in the second sealed chamber (2310).

6. The nitrogen generating device according to claim 1, characterized in that: The nitrogen production assembly further comprises an air pump box (23), the air pump box (23) comprising an air pump inner box (231) and an air pump outer box (232), the air pump inner box (231) being installed in the air pump outer box (232), and the air pump inner box (231) and the air pump outer box (232) being abutted and limited by a second vibration damping pad (202); The air pump (21) is installed in the air pump inner box (231), and the air pump (21) and the air pump inner box (231) are abutted and limited by a third vibration-damping pad (203).

7. The nitrogen production device according to claim 6, characterized in that: The third vibration damping pad (203) comprises an upper vibration damping pad (2031) and a lower vibration damping pad (2032), wherein the upper vibration damping pad (2031) and the lower vibration damping pad (2032) are arranged at upper and lower ends of the air pump (21); One of the upper vibration damping pad (2031) and the air pump inner box (231) is provided with a convex limiting rib (2311), and the other is provided with a limiting notch (20311), and the limiting rib (2311) is clamped at the limiting notch (20311); One of the lower vibration damping pad (2032) and the air pump inner box (231) is provided with a convex column (20321) and the other is provided with a concave insertion hole (2312), and the convex column (20321) is inserted into the insertion hole (2312).

8. The nitrogen generating device according to claim 1, characterized in that: The number of the 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) and are used to be connected to the refrigeration liner (200) of the refrigerator; Wherein, the fresh-keeping drawer (40) is arranged between the two mounting brackets (30) and is slidably connected to the two mounting brackets (30) respectively.

9. A refrigerator, characterized in that: It comprises a refrigeration liner (200) and a nitrogen generating device (100) as claimed in any one of claims 1 to 8; The nitrogen generating device (100) is installed in the refrigeration inner container (200).

10. The refrigerator according to claim 9, characterized in that: An extended protrusion (2001) is formed on the refrigerated inner container (200), and the extended protrusion (2001) is arranged below the box body (10) and abuts against the box body (10); The extending convex portion (2001) encloses a concave cavity (2002), and the concave cavity (2002) is used to accommodate the air pump (21).

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