Storage and preservation devices

Abstract

This application relates to a storage and preservation device, comprising: a main body assembly including a supporting body and a modified atmosphere drawer, the modified atmosphere drawer being disposed on the supporting body and having a first cavity; a modified atmosphere assembly including a body, an air inlet, an air outlet, and a modified atmosphere component, the body being disposed on the supporting body and having a receiving cavity communicating with the first cavity, the modified atmosphere component, the air inlet, and the air outlet all being located within the receiving cavity, the modified atmosphere component having a modified atmosphere cavity; the air inlet is used to drive airflow in the first cavity into the receiving cavity, the modified atmosphere component is used to separate oxygen in the airflow flowing into the receiving cavity into the modified atmosphere cavity, the air outlet is used to drive the oxygen-separated airflow back to the first cavity; and an air extraction assembly disposed on the supporting body and used to drive oxygen in the modified atmosphere cavity to flow out to the outside of the storage and preservation device. The storage and preservation device provided by this application has a superior preservation effect.

Description

Technical Field

[0001] This application relates to the field of storage and preservation technology, and in particular to a storage and preservation device. Background Technology

[0002] With the improvement of people's living standards and the enhancement of health awareness, storage and preservation devices with modified atmosphere storage (MAP) function have emerged. The principle of MAP is to use an air extraction component to remove some of the oxygen from the MAP space within the storage device, thereby reducing the oxygen content. This inhibits the growth and reproduction of microorganisms, achieving the MAP effect. However, because the MAP space cannot be completely sealed from the outside, outside air can easily penetrate into the MAP space, resulting in poor preservation. Summary of the Invention

[0003] Therefore, it is necessary to provide a storage and preservation device with better preservation effect to address the aforementioned problem of poor preservation effect.

[0004] A storage and preservation device, the storage and preservation device comprising:

[0005] The main component includes a support body and a modified atmosphere drawer, wherein the modified atmosphere drawer is disposed on the support body and has a first cavity;

[0006] A modified atmosphere assembly includes a body, an air inlet, an air outlet, and a modified atmosphere component. The body is disposed on a supporting body and has a receiving cavity communicating with a first cavity. The modified atmosphere component, the air inlet, and the air outlet are all located within the receiving cavity, and the modified atmosphere component has a modified atmosphere cavity. The air inlet is used to drive airflow from the first cavity into the receiving cavity. The modified atmosphere component is used to separate oxygen from the airflow flowing into the receiving cavity and transfer it to the modified atmosphere cavity. The air outlet is used to drive the oxygen-separated airflow back to the first cavity.

[0007] An air extraction assembly is disposed on the support body and is used to drive the oxygen in the modified atmosphere chamber to flow out to the outside of the storage and preservation device.

[0008] In one embodiment, the support body has a first compartment, and the controlled atmosphere drawer is movably disposed within the first compartment;

[0009] The supporting body has an air inlet and an air outlet that are both connected to the first chamber. The air inlet component is located at the air inlet, and the air outlet component is located at the air outlet. The main body covers the air inlet component and the air outlet component.

[0010] In one embodiment, the modified atmosphere assembly further includes a modified atmosphere mounting bracket, the modified atmosphere mounting bracket having a receiving channel extending through the air inlet and the air outlet along their arrangement direction, the modified atmosphere component passing through and confined within the receiving channel.

[0011] In one embodiment, the air extraction assembly includes an air extraction pump, a first pipe, and a first control valve. The air extraction pump has an air extraction end, the first pipe is connected between the air conditioning chamber and the air extraction end, and the first control valve is connected to the first pipe and used to control the on / off state of the first pipe.

[0012] When the oxygen concentration in the first chamber is greater than a preset value, the air pump starts and the first control valve opens.

[0013] In one embodiment, the main body assembly further includes a vacuum drawer disposed on the support body and having a second cavity;

[0014] The air extraction assembly is used to drive the airflow in the second chamber to the outside of the storage and preservation device.

[0015] In one embodiment, the support body has a second chamber, and the vacuum drawer is movably disposed within the second chamber;

[0016] The storage and preservation device also includes a fixing component located in the second compartment. The fixing component includes a first adsorption element and a second adsorption element, which are respectively disposed on the surfaces of the support body and the vacuum drawer facing each other.

[0017] In one embodiment, at least one of the first adsorption element and the second adsorption element is an electromagnet.

[0018] In one embodiment, the fixing component further includes a buffer element disposed on the surface of the support body facing the vacuum drawer and fitted over the first adsorption element.

[0019] In one embodiment, the air extraction assembly includes an air extraction pump, a second pipe, and a second control valve. The air extraction pump has an air extraction end, the second pipe connects the second chamber to the air extraction end, and the second control valve is connected to the second pipe and used to control the on / off state of the second pipe.

[0020] When the air pressure in the second chamber is greater than the preset air pressure value, the air pump starts and the second control valve opens.

[0021] In one embodiment, the support body has a second chamber, and the vacuum drawer is movably disposed within the second chamber;

[0022] The air extraction assembly also includes a pressure relief valve and a pressure relief pipe. The pressure relief pipe is located outside the flow path of the airflow from the second chamber to the outside and is connected to the second pipe. The pressure relief valve is connected to the pressure relief pipe and is used to control the opening and closing of the pressure relief pipe.

[0023] The pressure relief valve and the second control valve are configured to open before the vacuum drawer is pulled out of the second compartment.

[0024] In the aforementioned storage and preservation device, the air inlet component drives the airflow from the first chamber of the modified atmosphere drawer into the receiving chamber for component separation. The modified atmosphere chamber is created under negative pressure by the suction component, while other spaces outside the modified atmosphere chamber are also created under negative pressure by the air outlet component. Due to the permeation effect of the modified atmosphere component, oxygen enters the modified atmosphere chamber at a greater rate than nitrogen through the permeation component. Thus, oxygen easily permeates into the modified atmosphere chamber and is discharged to the outside of the storage and preservation device via the suction component, while nitrogen more easily flows back into the first chamber of the modified atmosphere drawer under the action of the air outlet component, resulting in a smaller pressure difference between the first chamber and the external atmospheric pressure. Therefore, the rate at which external air permeates into the first chamber is slower than in existing technologies, and the total amount of air permeating into the first chamber per unit time is relatively smaller. Consequently, the first chamber can always maintain a low-oxygen environment, thereby better inhibiting the growth and reproduction of microorganisms and achieving a better preservation effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the storage and preservation device in one embodiment of this application;

[0026] Figure 2 This is a front cross-sectional view of the support body and the modified atmosphere assembly, viewed from the side of the support body away from its opening, according to an embodiment of this application.

[0027] Figure 3 for Figure 1 The right-side cross-sectional view of the support structure in conjunction with the controlled atmosphere assembly is shown.

[0028] Figure 4 This is a cross-sectional view of the support body, vacuum drawer, and fixing components in one embodiment of this application.

[0029] Icon labels:

[0030] 1. Storage and preservation device; 10. Main component; 11. Support body; 111. First compartment; 112. Second compartment; 113. Storage compartment; 12. Modified atmosphere drawer; 121. First cavity; 13. Vacuum drawer; 131. Second cavity; 20. Modified atmosphere assembly; 21. Main body; 211. Receiving cavity; 22. Air inlet; 23. Air outlet; 24. Modified atmosphere assembly; 25. Modified atmosphere mounting bracket; 251. Receiving channel; 30. Air extraction assembly; 31. Air extraction pump; 311. Air extraction end 32. First pipeline; 33. First control valve; 34. Second pipeline; 35. Second control valve; 36. Pressure relief valve; 37. Pressure relief pipe; 38. Manifold; 39. First branch pipe; 41. Second branch pipe; 42. First quick connector; 43. Second quick connector; 50. Fixing assembly; 51. First adsorption element; 52. Second adsorption element; 53. Buffer element; 54. First fixing frame; 55. Second fixing frame; 60. Sealing element; 70. Oxygen sensor; 80. Pressure sensor. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] Please see Figure 1 This application provides a storage and preservation device 1, which is used to store and preserve stored items. The storage and preservation device 1 can be a household refrigerator, car refrigerator, or freezer with refrigeration power, or it can be other storage and preservation devices 1 without refrigeration function. The following embodiments all use a household refrigerator as an example for illustration. Stored items can be meat, vegetables, fruits, and other items that need to be preserved.

[0038] Please refer to the following: Figure 2 and Figure 3The storage and preservation device 1 includes a main component 10, a modified atmosphere component 20, an air extraction component 30, and a refrigeration component. The main component 10 mainly serves to support and store the food for preservation. The modified atmosphere component 20, the air extraction component 30, and the refrigeration component are all mounted on the main component 10. The modified atmosphere component 20 is used to separate oxygen from the air in the modified atmosphere preservation space of the main component 10. The air extraction component 30 is used to extract the separated oxygen to the outside of the storage and preservation device 1. The refrigeration component is used to cool the modified atmosphere preservation space to improve the preservation effect.

[0039] The controlled atmosphere assembly 20, the extraction assembly 30, and the cooling assembly can be located outside or inside the main body assembly 10, depending on the specific requirements. Preferably, the main body assembly 10 has a storage chamber 113 for housing the controlled atmosphere assembly 20, the extraction assembly 30, and the cooling assembly, thus preventing them from being exposed and causing safety hazards. The following embodiments all use the storage chamber 113 as an example to illustrate the controlled atmosphere assembly 20, the extraction assembly 30, and the cooling assembly.

[0040] The refrigeration components are conventional in this field. For example, they include a compressor, condenser, evaporator, capillary tube, etc. The compressor, condenser, evaporator, and capillary tube work together to cool the controlled atmosphere preservation space. Of course, the refrigeration components are not limited to the above one; they can also be other conventional refrigeration structures, as long as they can cool the controlled atmosphere preservation space. Specific details will not be elaborated here.

[0041] The following embodiments provide a detailed description of the specific structure and working principle of the main component 10, the modified atmosphere component 20, and the air extraction component 30.

[0042] The main component 10 includes a supporting body 11 and a modified atmosphere drawer 12. The modified atmosphere drawer 12 is disposed on the supporting body 11 and has a first cavity 121. The modified atmosphere component 20 includes a body 21, an air inlet 22, an air outlet 23, and a modified atmosphere component 24. The body 21 is disposed on the supporting body 11 and has a receiving cavity 211 communicating with the first cavity 121. The modified atmosphere component 24, the air inlet 22, and the air outlet 23 are all located within the receiving cavity 211, and the modified atmosphere component 24 has a modified atmosphere cavity. The air inlet 22 is used to drive the airflow in the first cavity 121 into the receiving cavity 211. The modified atmosphere component 24 is used to separate oxygen in the airflow flowing into the receiving cavity 211 into the modified atmosphere cavity. The air outlet 23 is used to drive the airflow after oxygen separation back into the first cavity 121. The air extraction component 30 is disposed on the supporting body 11 and is used to drive the oxygen in the modified atmosphere cavity to flow out to the outside of the storage and preservation device 1.

[0043] The supporting main body 11 has a first compartment 111, and the modified atmosphere drawer 12 is movably disposed within the first compartment 111. Taking the storage and preservation device 1 as an example, the first compartment 111 can be any one of a preservation compartment, a refrigerator compartment, and a variable temperature compartment, and the first compartment 111 is constructed to form the aforementioned modified atmosphere preservation space. The following embodiments will all be described using the first compartment 111 as a preservation compartment as an example.

[0044] Specifically, the supporting body 11 is generally rectangular in shape and includes a main body and a door. The main body can have one or more first compartments 111, and the number is not limited here. One side of the main body also has an opening that communicates with each first compartment 111. The door is rotatably connected to the main body and can rotate relative to the main body, so that all first compartments 111 can be opened or closed simultaneously to facilitate the retrieval and placement of stored items.

[0045] The installation method between the main body 21 and the supporting body 11 can be snap-fit, glued, etc., and the specific method is not limited here.

[0046] The controlled atmosphere drawer 12 is movably disposed within the first compartment 111. When the door of the main body is closed, the controlled atmosphere drawer 12 is sealed within the first compartment 111. When the door of the main body is opened, the controlled atmosphere drawer 12 can be pulled out (along the door). Figure 3 (Pull out in the direction indicated by the middle arrow a) so that the controlled atmosphere drawer 12 is at least partially located outside the first compartment 111.

[0047] The modified atmosphere drawer 12 can be single or multiple. A single or at least two modified atmosphere drawers 12 can be installed within the same first compartment 111, depending on the requirements. Each pair of adjacent modified atmosphere drawers 12 within the same first compartment 111 can be separated by a partition, or they can be left open. Opening the door allows for easy access to each modified atmosphere drawer 12 within each first compartment 111.

[0048] The main body 21 can be a closed hollow structure or a hollow structure with one end open, and can be placed over the controlled atmosphere drawer 12, or placed over the inner wall of the storage compartment 113, etc. The receiving cavity 211 and the first cavity 121 can be directly connected, or they can be connected through other pipes or channels, etc., which is not limited here.

[0049] The modified atmosphere container 24 is a hollow structure with a modified atmosphere cavity formed by a modified atmosphere membrane. Specifically, the modified atmosphere container 24 can be formed by a single piece of modified atmosphere membrane or by multiple modified atmosphere membranes. The modified atmosphere container 24 has permeation holes. The main components of the airflow flowing into the receiving cavity 211 are oxygen and nitrogen. Oxygen can pass through the permeation holes and permeate into the modified atmosphere cavity relatively quickly, while the permeation rate of nitrogen is relatively slower than that of oxygen.

[0050] In the conventional storage and preservation device 1, the vacuum pump assembly 30 includes a vacuum pump and a vacuum pipe, and the modified atmosphere assembly 20 includes only a modified atmosphere membrane. The vacuum pump is connected to the first chamber 121 of the modified atmosphere drawer 12 through the vacuum pipe, and the modified atmosphere membrane is disposed at the inlet of the vacuum pipe. Under the action of the vacuum pump 31, oxygen and nitrogen in the first chamber 121 can permeate the modified atmosphere membrane and be discharged to the outside of the storage and preservation device 1 through the vacuum pipe.

[0051] When the vacuum pump is working, a negative pressure is created in the suction pipe, which accelerates the rate at which oxygen and nitrogen permeate through the controlled atmosphere membrane. However, the permeation rate of oxygen is always greater than that of nitrogen. Due to the permeation of oxygen and nitrogen, which is then discharged to the outside of the storage and preservation device 1 under the action of the vacuum pump, the air pressure in the first chamber 121 of the controlled atmosphere drawer 12 is lower than the atmospheric pressure outside the storage and preservation device 1, resulting in a significant pressure difference. In addition, due to various errors, such as manufacturing dimensional errors and assembly errors, the controlled atmosphere drawer 12 cannot be completely sealed within the first chamber 111. As a result, external air can easily permeate into the first chamber 121 through the gap between the door and the main body, leading to an increase in the oxygen and microbial content in the first chamber 121, thus resulting in poor preservation of the stored items.

[0052] In this application, by setting an air inlet 22 and an air outlet 23, the air inlet 22 is used to drive the airflow in the first cavity 121 of the modified atmosphere drawer 12 into the receiving cavity 211 for component separation. The modified atmosphere cavity forms a negative pressure under the action of the air extraction component 30, and other spaces outside the modified atmosphere cavity in the receiving cavity 211 form a negative pressure under the action of the air outlet 23. Since the air inlet 22 continuously supplies airflow into the receiving cavity 211, and due to the permeation effect of the modified atmosphere component 24, oxygen enters the modified atmosphere cavity at a greater rate than nitrogen through the permeation component (wherein, the rate of nitrogen permeation through the modified atmosphere component 24 can be zero). Thus, oxygen easily permeates into the modified atmosphere cavity and is discharged to the outside of the storage and preservation device 1 by the air extraction component 30, while nitrogen has a slower permeation rate and is more likely to flow back into the first cavity 121 of the modified atmosphere drawer 12 under the action of the air outlet 23, making the pressure difference between the air pressure in the first cavity 121 and the external atmospheric pressure smaller. In other words, compared to existing technologies, the arrangement of the air inlet 22 and air outlet 23 allows for better separation between nitrogen and oxygen, and the nitrogen can flow back into the first chamber 121. This results in a smaller pressure difference between the first chamber 121 and atmospheric pressure compared to existing technologies. Consequently, the rate at which external air permeates into the first chamber 121 is slower than in existing technologies, and the total amount of air permeating into the first chamber 121 per unit time is also relatively smaller. Therefore, the first chamber 121 can maintain a low-oxygen environment, thereby better inhibiting the growth and reproduction of microorganisms and achieving a better preservation effect.

[0053] In some embodiments, the support body 11 is provided with an air inlet and an air outlet that are both connected to the first chamber 111. An air inlet 22 is provided at the air inlet, an air outlet 23 is provided at the air outlet, and the body 21 is covered by the air inlet 22 and the air outlet 23.

[0054] Specifically, both the air inlet 22 and the air outlet 23 are fans. One end of the main body 21 is provided with a cover opening that communicates with the accommodating cavity 211. The main body 21 covers the air inlet 22 and the air outlet 23, and the orthogonal projections of the air inlet and the air outlet on the main body 21 fall into the accommodating cavity 211.

[0055] For example, if the controlled atmosphere component 20 is located outside the support body 11, the air inlet and air outlet can both be located on the inner wall of the first chamber 111 and pass through the support body 11. Alternatively, if the controlled atmosphere component 20 is located in the storage chamber 113, the air inlet and air outlet can be located on the inner wall of the storage chamber 113 and connect the first chamber 111 and the storage chamber 113.

[0056] The first cavity 121 of the controlled atmosphere drawer 12 can be connected to the receiving cavity 211 in various ways. For example, the first cavity 121 of the controlled atmosphere drawer 12 can be connected to the receiving cavity 211 sequentially through the first chamber 111, the air inlet, and the cover opening. Simultaneously, the first cavity 121 of the controlled atmosphere drawer 12 can be connected to the receiving cavity 211 sequentially through the first chamber 111, the air outlet, and the cover opening. Another example is that the controlled atmosphere drawer 12 has an air inlet and an air outlet, both connected to the first cavity 121. The first cavity 121 of the controlled atmosphere drawer 12 can be connected to the receiving cavity 211 sequentially through the air inlet, the air inlet, and the cover opening. Simultaneously, the first cavity 121 of the controlled atmosphere drawer 12 can be connected to the receiving cavity 211 sequentially through the air outlet, the air outlet, and the cover opening. The specific method is not limited here; it is only necessary to ensure that the airflow in the first cavity 121 can flow into the receiving cavity 211 through the air inlet under the action of the air inlet component 22.

[0057] By covering the air inlet 22 and air outlet 23 with the main body 21 enclosing them, and the air inlet 22 positioned at the air inlet and the air outlet 23 positioned at the air outlet, the airflow from the first cavity 121 can flow into the receiving cavity 211 through the air inlet under the action of the air inlet 22. There, under the action of the atmosphere control component 24, the components are separated. Furthermore, the separated airflow can flow back into the first cavity 121 through the air outlet under the action of the air outlet 23. This prevents the pressure difference between the air in the first cavity 121 and the external atmospheric pressure from becoming too large, thus improving the preservation effect. Moreover, the way the main body 21 is enclosed, compared to a closed hollow structure, makes the connection between the receiving cavity 211 and the first cavity 121 simpler and easier to assemble.

[0058] In some embodiments, the modified atmosphere assembly 20 further includes a modified atmosphere mounting bracket 25, which has a receiving channel 251 extending through the air inlet 22 and the air outlet 23 along their arrangement direction, and the modified atmosphere component 24 passes through and is confined within the receiving channel 251.

[0059] For example, taking the body 21 as a closed hollow structure, the modified atmosphere mounting bracket 25 can be fixed to the body 21 by means of gluing, snap-fitting, etc. As another example, taking the body 21 as a hollow structure with one end open (i.e., the embodiment in which one end of the body 21 has a cover opening communicating with the accommodating cavity 211), the modified atmosphere mounting bracket 25 can be fixed to the supporting body 21 by means of gluing, snap-fitting, etc.

[0060] Because the modified atmosphere package 24 is formed by a modified atmosphere film structure, it is relatively flexible and difficult to fix. By setting up a modified atmosphere fixing bracket 25, the arrangement direction of the air inlet 22 and the air outlet 23 of the modified atmosphere package 24 is inserted and confined within the receiving channel 251. This not only facilitates the fixing of the modified atmosphere package 24, but also allows the airflow to enter from the inlet of the receiving channel 251 and undergo component separation under the action of the modified atmosphere package 24. This effectively improves the ease of assembly of the modified atmosphere package 24 and gives it better operational reliability.

[0061] In some embodiments, the air extraction assembly 30 includes an air extraction pump 31, a first pipe 32, and a first control valve 33. The air extraction pump 31 has an air extraction end 311. The first pipe 32 is connected between the gas conditioning chamber and the air extraction end 311. The first control valve 33 is connected to the first pipe 32 and is used to control the opening and closing of the first pipe 32. When the oxygen concentration in the first chamber 121 is greater than a preset concentration value, the air extraction pump 31 is started and the first control valve 33 is opened.

[0062] Optionally, the vacuum assembly 30 may also include a first quick connector 42 fitted to the modified atmosphere mounting bracket 25, with one end of the first pipe 32 away from the vacuum pump 31 connected to the modified atmosphere chamber via the first quick connector 42.

[0063] The oxygen concentration in the first chamber 121 can be obtained by the oxygen sensor 70. To improve the automation of the operation of the storage and preservation device 1, a controller can also be configured, and the first control valve 33 is set as a solenoid valve. The controller is electrically connected to the first control valve 33, the oxygen sensor 70, the air inlet 22 and the air outlet 23, and is used to control the operation of the first control valve 33, the oxygen sensor 70, the air inlet 22 and the air outlet 23.

[0064] The preset concentration value can be set according to the concentration that enables common items stored in the modified atmosphere drawer 12 to have a good preservation effect, and the preset concentration value is less than the oxygen concentration in the air outside the storage device. When the oxygen concentration in the first chamber 121 of the modified atmosphere drawer 12 is less than or equal to the preset concentration value, the stored items can be preserved for a longer period of time.

[0065] In actual operation, the modified atmosphere drawer 12 is stored in the first chamber 111, and after the door of the main body is closed, the oxygen sensor 70 detects the oxygen concentration in the modified atmosphere drawer 12 and feeds it back to the controller. The controller compares the oxygen concentration with a preset value. If the oxygen concentration is greater than the preset value, the controller controls the air inlet 22, air outlet 23, first control valve 33, and vacuum pump 31 to open. Under the action of vacuum pump 31, the airflow in the first chamber 121 of the modified atmosphere drawer 12 flows into the receiving chamber 211 of the main body 21 and is separated. The separated oxygen is discharged to the outside of the storage and preservation device 1 through the first pipe 32 and vacuum pump 31, and the separated airflow in the receiving chamber 211 flows back into the first chamber 121. When the oxygen concentration is less than or equal to the preset value, the controller controls the air inlet 22, air outlet 23, and first control valve 33 to close. Under this setting, the storage and preservation device 1 can automatically adjust the oxygen concentration in the first chamber 121.

[0066] Please refer to the following: Figure 4 In some embodiments, the main body assembly 10 further includes a vacuum drawer 13, which is disposed on the support body 11 and has a second cavity 131. The air extraction assembly 30 is used to drive the airflow in the second cavity 131 to the outside of the storage and preservation device 1.

[0067] The supporting main body 11 has a second compartment 112, and a vacuum drawer 13 is movably disposed within the second compartment 112. Taking the storage and preservation device 1 as an example, the second compartment 112 can be any one of a preservation compartment, a refrigerator compartment, and a variable temperature compartment, and the second compartment 112 is also constructed to form the aforementioned modified atmosphere preservation space. The following embodiments will all be described using the second compartment 112 as a preservation compartment as an example.

[0068] The second chamber 112 and the first chamber 111 are two independent chambers to avoid mutual interference of airflow within them.

[0069] The main body can be equipped with one or more second chambers 112, and the number is not limited here. The opening of the main body is connected to each second chamber 112. The door can rotate relative to the main body to realize the synchronous opening or closing of all second chambers 112, so as to facilitate the retrieval and placement of stored items.

[0070] The vacuum drawer 13 is movably disposed within the second compartment 112. When the door of the main body is closed, the vacuum drawer 13 is sealed within the second compartment 112. When the door of the main body is opened, the vacuum drawer 13 can be pulled out (along the door). Figure 4 Pull out in the direction indicated by the middle arrow a) so that the vacuum drawer 13 is at least partially located outside the second compartment 112.

[0071] The vacuum drawer 13 can be single or multiple. A single or at least two vacuum drawers 13 can be installed within the same second compartment 112, depending on the requirements. Each pair of adjacent vacuum drawers 13 within the same second compartment 112 can be separated by a partition, or they can be left open. Opening the door allows for easy access to each vacuum drawer 13 within each second compartment 112.

[0072] When the vacuum assembly 30 is working, the airflow in the second chamber 131 of the vacuum drawer 13 can be discharged to the outside of the storage and preservation device 1 under the action of the vacuum assembly 30, so that a negative pressure is formed in the second chamber 131. In this way, the growth and reproduction of microorganisms can be inhibited and the preservation effect can be improved.

[0073] Define the air pressure in the first chamber 121 of the controlled atmosphere drawer 12 as P. 气调 The oxygen concentration in the first chamber 121 of the controlled atmosphere drawer 12 is C. 气调氧 The nitrogen concentration in the first chamber 121 of the controlled atmosphere drawer 12 is C. 气调氮 The air pressure in the second chamber 131 of the vacuum drawer 13 is P. 真空 The oxygen concentration in the second chamber 131 of the vacuum drawer 13 is C. 真氧 The nitrogen concentration in the second chamber 131 of the vacuum drawer 13 is C. 真氮 Atmospheric pressure is P 大 The oxygen concentration in the air is C 空氧 The nitrogen concentration in the air is C. 空氮 When the storage and preservation device 1 is actually in operation, P 大 >P 气调 >P 真空 C 空氧 >C 真氧 C 空氧 >C 气调氧 C 真氧 With C 气调氧 The size can be set according to the items to be stored, for example, C 真氧 <C 气调氧 Or, C 真氧 Greater than C 气调氧 .

[0074] Generally, since only the oxygen content is reduced in the first chamber 121 of the controlled atmosphere drawer 12, the water vapor content in the gas inside is relatively high. Therefore, the controlled atmosphere drawer 12 can be used to store vegetables and fruits with high water content, and C 真氧 <C 气调氧The second chamber 131 of the vacuum drawer 13 contains less oxygen, nitrogen, and water vapor. Therefore, the modified atmosphere drawer 12 can be used to store meat with low moisture content. In other words, the modified atmosphere drawer 12 is mainly used to provide a low-oxygen preservation environment, while the vacuum drawer 13 is mainly used to provide a low-pressure preservation environment.

[0075] By setting up the vacuum drawer 13, users can choose to place the items in either the modified atmosphere drawer 12 or the vacuum drawer 13, depending on the type of items being stored, so that the stored items have a better preservation effect.

[0076] In some embodiments, the storage and preservation device 1 further includes a fixing component 50 located in the second compartment 112. The fixing component 50 includes a first adsorption member 51 and a second adsorption member 52, which are respectively disposed on the surfaces of the support body 11 and the vacuum drawer 13 facing each other.

[0077] By incorporating the first adsorption element 51 and the second adsorption element 52, when the vacuum drawer 13 is located within the second compartment 112, the fixing effect of the first adsorption element 51 and the second adsorption element 52 reduces the risk of the vacuum drawer 13 moving relative to the supporting body 11, thereby ensuring superior sealing performance. Furthermore, the airflow exchange between the vacuum drawer 13 and the outside is extremely weak, thus ensuring that the second cavity 131 of the vacuum drawer 13 is under negative pressure, resulting in superior preservation of stored items within the second cavity 131.

[0078] The first adsorption element 51 can be directly connected to the support body 11, or it can be connected to the support body 11 through the first fixing frame 54. The second adsorption element 52 can be directly connected to the vacuum drawer 13, or it can be connected to the support body 11 through the second fixing frame 55.

[0079] In one embodiment, the second fixing bracket 55 has a groove, and the second adsorption member 52 is embedded in the groove to achieve its own fixation.

[0080] In some embodiments, the main body of the support body 11 has a first surface disposed opposite to an opening on the main body, and the first surface is one of the inner walls surrounding the second compartment 112. The vacuum drawer 13 has a second surface disposed opposite to the first surface when it is located in the second compartment 112, a first suction member 51 is disposed on the first surface, and a second suction member 52 is disposed on the second surface.

[0081] In this way, when the vacuum drawer 13 is located in the second chamber 112, the first adsorption member 51 and the second adsorption member 52 adsorb at the end of the vacuum drawer 13 away from the opening of the main body, making the installation of the vacuum drawer 13 more stable and helping to improve the sealing performance of the vacuum drawer 13.

[0082] In some embodiments, at least one of the first adsorption member 51 and the second adsorption member 52 is an electromagnet.

[0083] For example, the first adsorption element 51 and the second adsorption element 52 can be electromagnets, and the other can be a permanent magnet; or, both the first adsorption element 51 and the second adsorption element 52 can be electromagnets. The storage and preservation device 1 also includes an electrical circuit, and each electromagnet is electrically connected to the controller through the electrical circuit. The following embodiments will be described using the example of the first adsorption element 51 being an electromagnet and the second adsorption element 52 being a magnet.

[0084] In actual operation, the storage and preservation device 1 also includes a data acquisition unit and an alarm electrically connected to the controller. The data acquisition unit collects real-time information from the storage and preservation device 1 and feeds it back to the controller. The controller determines whether the vacuum drawer 13 is inside the vacuum drawer 13 based on the real-time information and whether the door of the main body is closed. When the controller determines that the vacuum drawer 13 is inside the vacuum drawer 13 and the door of the main body is closed, the controller controls the power supply circuit to energize the first adsorption member 51 so that the second adsorption member 52 can be adsorbed. When the door is opened (as determined by the controller through the real-time information collected by the data acquisition unit), the controller controls the power supply circuit to de-energize so that the adsorption force between the first adsorption member 51 and the second adsorption member 52 is zero. This makes it easy to remove the vacuum drawer 13. It can be seen that by setting at least one of the first adsorption member 51 and the second adsorption member 52 to be an electromagnet, the vacuum drawer 13 can be easily fixed and pulled out.

[0085] The data acquisition device can be a camera, and the real-time information is real-time images. The controller compares the real-time images acquired by the camera with the standard images stored therein. If the images do not match the standard images, the controller activates the alarm to prompt the user to push the vacuum drawer 13 into the second chamber 112 and / or close the door until the vacuum drawer 13 is completely inside the second chamber 112 and the door is closed.

[0086] Of course, the specific structure of the data acquisition device is not limited to the one described above. In other embodiments, the data acquisition device can also be a temperature data acquisition device, and the real-time information is the real-time temperature. For example, the temperature data acquisition device acquires the temperature of the second chamber 112. Since the door is open and the vacuum drawer 13 is not completely inside the second chamber 112, the second chamber 112 can better exchange airflow with the outside. Therefore, the temperature inside the second chamber 112 will be higher than the temperature when the vacuum drawer 13 is inside the second chamber 112 and the door is closed. Therefore, by comparing the real-time temperature of the second chamber 112 acquired by the data acquisition device with the historical temperature of the second chamber 112 recorded by the controller when the door was closed last time, the controller can determine whether the vacuum drawer 13 is inside the vacuum drawer 13 and whether the door is closed.

[0087] In some embodiments, the fixing component 50 further includes a buffer 53 disposed on the surface of the support body 11 facing the vacuum drawer 13 and fitted over the first suction member 51. Understandably, the buffer 53 is disposed on the first surface.

[0088] Under the adsorption of the first adsorption member 51, the second adsorption member 52 drives the vacuum drawer 13 to slide until it is adsorbed by the first adsorption member 51. To avoid a large collision noise generated at the moment the vacuum drawer 13 is adsorbed and locked by the first adsorption member 51 and the second adsorption member 52, a buffer member 53 is provided. The buffer member 53 can buffer and absorb the collision force between the first adsorption member 51 and the second adsorption member 52, thus reducing the noise generated during the collision and preventing the vacuum drawer 13 from deforming.

[0089] In some embodiments, to ensure that the vacuum drawer 13 can slide stably when the first adsorption member 51 and the second adsorption member 52 are in action, the second adsorption member 52 can be located at the bottom of the vacuum drawer 13, and the first adsorption member 51 and the second adsorption member 52 are arranged opposite each other in the horizontal direction.

[0090] The second adsorption element 52 is located at the bottom of the vacuum drawer 13. For example, the second adsorption element 52 is located on the bottom surface of the vacuum drawer 13, or the second adsorption element 52 is located on the side of the vacuum drawer 13 adjacent to the bottom surface and is positioned close to the bottom surface.

[0091] In one embodiment, the number of fixing components 50 can be set according to the number of vacuum drawers 13. The number of fixing components 50 is the same as the number of vacuum drawers 13 and corresponds one-to-one. Each fixing component 50 is used to fix the corresponding vacuum drawer 13 and support body 11.

[0092] In other embodiments, the number of fixing components 50 can also be set according to the number of vacuum drawers 13 and modified atmosphere drawers 12. The number of fixing components 50 is the same as the sum of the number of vacuum drawers 13 and modified atmosphere drawers 12, and each vacuum drawer 13 and each modified atmosphere drawer 12 has its corresponding fixing component 50. Each modified atmosphere drawer 12 is fixed to the support body 11 by its corresponding fixing component 50. It is worth mentioning that the way each modified atmosphere drawer 12 is fixed to the support body 11 by its corresponding fixing component 50 is the same as the way each vacuum drawer 13 is fixed to the support body 11 by its corresponding fixing component 50, and the control method are the same, so it will not be described again here.

[0093] In some embodiments, the storage and preservation device 1 may also be provided with a seal 60, which is used to seal the gap between the vacuum drawer 13 and the edge of the opening of the main body, and / or to seal the gap between the modified atmosphere drawer 12 and the edge of the opening of the main body.

[0094] Preferably, the gap between the vacuum drawer 13 and the edge of the opening of the main body, and the gap between the controlled atmosphere drawer 12 and the edge of the opening of the main body are sealed by the seal 60.

[0095] Taking the gap between the vacuum drawer 13 and the edge of the opening of the main body as sealed by the sealing element 60 as an example, by setting the sealing element 60, the airtightness inside the vacuum drawer 13 can be maintained, the air exchange between the vacuum drawer 13 and the outside can be weakened, so that a stable negative pressure can be formed inside the vacuum drawer 13, which has a better preservation effect.

[0096] Understandably, when the gap between the modified atmosphere drawer 12 and the edge of the opening of the main body is sealed by the sealant 60, the modified atmosphere drawer 12 also has a good preservation effect.

[0097] Please refer to it again. Figure 1 In some embodiments, the air extraction assembly 30 includes an air extraction pump 31, a second pipe 34, and a second control valve 35. The air extraction pump 31 has an air extraction end 311. The second pipe 34 connects the second chamber 131 and the air extraction end 311. The second control valve 35 is connected to the second pipe 34 and is used to control the opening and closing of the second pipe 34. When the air pressure in the second chamber 131 is greater than the preset air pressure value, the air extraction pump 31 starts and the second control valve 35 opens.

[0098] Optionally, the vacuum assembly 30 may also include a second quick connector 43 fitted to the vacuum drawer 13, and the end of the second pipe 34 away from the vacuum pump 31 is connected to the second chamber 131 through the second quick connector 43.

[0099] The air pressure in the second chamber 131 can be obtained through the air pressure sensor 80. To improve the automation of the operation of the storage and preservation device 1, the second control valve 35 can also be set as a solenoid valve. The controller is electrically connected to the second controller and the air pressure sensor 80, and is used to control the operation of the second control valve 35 and the air pressure sensor 80.

[0100] The preset air pressure value can be set according to the air pressure that can ensure good preservation of common items stored in the vacuum drawer 13, and the preset air pressure value is less than atmospheric pressure. When the air pressure in the second chamber 131 of the vacuum drawer 13 is less than or equal to the preset air pressure value, the preservation time of the stored items is longer.

[0101] Specifically, the second chamber 112 is located on the main body, and the opening on the main body is also connected to the second chamber 112. When the vacuum drawer 13 is completely retracted into the second chamber 112 and the door closes the opening of the main body, the pressure sensor 80 detects the pressure inside the vacuum drawer 13 and feeds it back to the controller. The controller compares the pressure with a preset pressure value. If the pressure is greater than the preset pressure value, the controller controls the first control valve 33 and the vacuum pump 31 to open. Under the action of the vacuum pump 31, the airflow in the second chamber 131 of the vacuum drawer 13 flows out through the second pipe 34 to the outside of the storage and preservation device 1. When the pressure is less than or equal to the preset pressure value, the controller controls the second control valve 35 to close. In this embodiment, the storage and preservation device 1 can be automated.

[0102] In some embodiments of this application, the vacuum assembly 30 further includes a pressure relief valve 36 and a pressure relief pipe 37. The pressure relief pipe 37 is located outside the flow path of the airflow from the second chamber 131 to the outside and is connected to the second pipe 34. The pressure relief valve 36 is connected to the pressure relief pipe 37 and is used to control the opening and closing of the pressure relief pipe 37. The pressure relief valve 36 and the second control valve 35 are configured to open before the vacuum drawer 13 is pulled out from the second compartment 112.

[0103] Because of the significant pressure difference between the second chamber 131 of the vacuum drawer 13 and the external atmospheric pressure, pulling out the vacuum drawer 13 is quite difficult. Therefore, it is necessary to depressurize the vacuum drawer 13 before pulling it out of the second chamber 112.

[0104] Specifically, the pressure relief valve 36 is a solenoid valve and is electrically connected to the controller. During actual operation, the controller opens the pressure relief valve 36 and the second control valve 35, while simultaneously closing the vacuum pump 31. This allows external air to enter the second chamber 131 of the vacuum drawer 13 sequentially through the pressure relief pipe 37 and the second pipe 34, ensuring that the air pressure in the second chamber 131 is the same as atmospheric pressure, thus facilitating easy extraction. After the vacuum drawer 13 is pulled out, the controller closes the pressure relief valve 36 and the second control valve 35.

[0105] In some embodiments, the vacuum assembly 30 further includes a manifold 38, a first branch pipe 39, and a second branch pipe 41. One end of the manifold 38 is connected to the suction end 311 of the vacuum pump 31, and the end of the manifold 38 away from the suction end 311 is connected to both the first branch pipe 39 and the second branch pipe 41. A first pipe 32 is connected to the end of the first branch pipe 39 away from the manifold 38, and a second pipe 34 is connected to the end of the second branch pipe 41 away from the manifold 38. A pressure relief pipe 37 is connected between the outside of the storage and preservation device 1 and the manifold 38.

[0106] When the vacuum drawer 13 needs to be pulled out, under the action of the controller, external air can sequentially enter the second cavity 131 of the vacuum drawer 13 through the pressure relief pipe 37, the manifold 38, the second branch pipe 41, and the second pipe 34 (the air flow direction is as follows). Figure 1 (As indicated by the arrow pqrst) to release pressure.

[0107] Generally, because the air pressure in the first chamber 121 is relatively close to atmospheric pressure, the atmosphere drawer 12 can still be pulled out even without depressurization. Of course, if the air pressure in the first chamber 121 of the atmosphere drawer 12 is too low, the controller can open the pressure relief valve 36 and the first control valve 33, allowing external air to enter the first chamber 121 of the atmosphere drawer 12 sequentially through the pressure relief pipe 37, the manifold 38, the first branch pipe 39, the first pipe 32, and the atmosphere control assembly 20 to relieve pressure.

[0108] In some embodiments, the storage compartment 113 is connected to the outside, and the vacuum pump 31 also has an exhaust end, through which oxygen drawn from the controlled atmosphere drawer 12 and air drawn from the vacuum drawer 13 can flow to the outside. Meanwhile, outside air can flow into the vacuum drawer 13 and / or the controlled atmosphere drawer 12 through the storage compartment 113 and the pressure relief pipe 37.

[0109] The following describes in detail the specific usage process of the storage and preservation device 1, taking as an example that there are two of each of the modified atmosphere drawer 12, vacuum drawer 13, first compartment 111, second compartment 112, first pipe 32, second pipe 34, first control valve 33, second control valve 35, and modified atmosphere assembly 20, and only the vacuum drawer 13 is fixed by the fixing assembly 50.

[0110] Each first compartment 111 is equipped with a modified atmosphere drawer 12, and each second compartment 112 is equipped with a vacuum drawer 13. The storage and preservation device 1 includes two branches: a modified atmosphere branch and a vacuum branch. Each modified atmosphere branch consists of a modified atmosphere drawer 12, a modified atmosphere component 20, a first pipe 32, and a first control valve 33. Each vacuum branch consists of a vacuum drawer 13, a fixing component 50, a second pipe 34, and a second control valve 35.

[0111] In each controlled atmosphere branch, a first control valve 33 is connected to a first pipe 32, and the first pipe 32 connects the first branch pipe 39 and the controlled atmosphere chamber. In each vacuum branch, a second control valve 35 is connected to a second pipe 34, and the second pipe 34 connects the second branch pipe 41 and the second chamber 131.

[0112] When each modified atmosphere drawer 12 is located in its corresponding first chamber 111 and each vacuum drawer 13 is located in its corresponding second chamber 112, and the doors are closed on the main body opening, the controller energizes the first suction element 51 of the fixing assembly 50 in each vacuum branch, so that each vacuum drawer 13 can be fixed to the supporting body 11. Simultaneously, the controller starts the vacuum pump 31 and opens the first control valve 33, air inlet 22, and air outlet 23 in each modified atmosphere branch, as well as the second control valve 35 in each vacuum branch. Under the action of the vacuum pump 31, oxygen in the first chamber 121 of each modified atmosphere branch can be discharged to the outside (the oxygen discharge path is as follows...). Figure 1 As indicated by the middle arrow defghx, or as shown Figure 1 (As indicated by the middle arrow bcefghx), so that the oxygen concentration in the first chamber 121 gradually decreases. Simultaneously, the air in the second chamber 131 of each vacuum branch can be exhausted to the outside, thereby reducing the air pressure in the second chamber 131 (the air exhaust path in the second chamber 131 is as follows). Figure 1 As indicated by the middle arrow mnoghx, or as shown Figure 1 (As indicated by the middle arrow jknoghx). When the oxygen concentration in the first chamber 121 of any controlled atmosphere branch is less than or equal to the preset concentration value, the first control valve 33 in that controlled atmosphere branch is closed. When the gas pressure in the second chamber 131 of any vacuum branch is less than or equal to the preset gas pressure value, the second control valve 35 in that vacuum branch is closed. At this time, the vacuum pump 31 continues to operate until the oxygen concentration in the first chamber 121 of all controlled atmosphere branches is less than or equal to the preset concentration value, and the gas pressure in the second chamber 131 of all vacuum branches is less than or equal to the preset gas pressure value, at which point the vacuum pump 31 is shut down.

[0113] When the vacuum drawer 13 in any vacuum branch needs to be pulled out, the controller controls the pressure relief valve 36 and the second control valve 35 in that vacuum branch to release the pressure in the vacuum drawer 13. At this time, the vacuum pump 31 is turned off, and the second control valves 35 of other vacuum branches and the first control valves 33 of other controlled atmosphere branches are also turned off.

[0114] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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, they should be considered to be within the scope of this specification.

[0115] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A storage freshness preserving device, characterized by, The storage fresh-keeping device comprises: a main body assembly (10) comprising a support main body (11) and a modified atmosphere drawer (12), wherein the modified atmosphere drawer (12) is arranged on the support main body (11) and has a first cavity (121); a modified atmosphere assembly (20) comprising a body (21), an air inlet member (22), an air outlet member (23) and a modified atmosphere member (24), wherein the body (21) is arranged on the support main body (11) and has a receiving cavity (211) in communication with the first cavity (121), the modified atmosphere member (24), the air inlet member (22) and the air outlet member (23) are all located in the receiving cavity (211), the modified atmosphere member (24) has a modified atmosphere cavity, the air inlet member (22) is used to drive the airflow in the first cavity (121) to flow into the receiving cavity (211), the modified atmosphere member (24) is used to separate the oxygen in the airflow flowing into the receiving cavity (211) into the modified atmosphere cavity, and the air outlet member (23) is used to drive the nitrogen after the oxygen separation to flow back to the first cavity (121) so as to reduce the pressure difference between the air pressure of the first cavity (121) and the atmospheric pressure outside, the air inlet member (22) and the air outlet member (23) are both air fans; and an air extraction assembly (30) arranged on the support main body (11) and used to drive the oxygen in the modified atmosphere cavity to flow out to the outside of the storage fresh-keeping device.

2. The device of claim 1, wherein The support main body (11) is provided with a first chamber (111), and the modified atmosphere drawer (12) is movably arranged in the first chamber (111); The support main body (11) is provided with an air inlet and an air outlet both in communication with the first chamber (111), the air inlet member (22) is arranged at the air inlet, the air outlet member (23) is arranged at the air outlet, and the body (21) is arranged outside the air inlet member (22) and the air outlet member (23).

3. The device of claim 1, wherein, The modified atmosphere assembly (20) further comprises a modified atmosphere fixing frame (25) having a receiving channel (251) penetratingly arranged along the arrangement direction of the air inlet member (22) and the air outlet member (23), and the modified atmosphere member (24) is arranged in the receiving channel (251).

4. The apparatus of claim 1, wherein The air extraction assembly (30) comprises an air extraction pump (31) having an air extraction end (311), a first pipeline (32) in communication between the modified atmosphere cavity and the air extraction end (311), and a first control valve (33) connected to the first pipeline (32) and used to control the opening and closing of the first pipeline (32). When the oxygen concentration in the first cavity (121) is greater than a preset concentration value, the air extraction pump (31) is started, and the first control valve (33) is opened.

5. The apparatus of any one of claims 1 to 4, wherein, The main body assembly (10) further comprises a vacuum drawer (13) arranged on the support main body (11) and having a second cavity (131); The air extraction assembly (30) is used to drive the airflow in the second cavity (131) to flow out to the outside of the storage fresh-keeping device.

6. The apparatus of claim 5, wherein the means for storing comprises a plurality of pockets. The support body (11) is internally provided with a second chamber (112), and the vacuum drawer (13) is movably arranged in the second chamber (112); The storage fresh-keeping device further comprises a fixing assembly (50) arranged in the second chamber (112), the fixing assembly (50) comprises a first suction accessory (51) and a second suction accessory (52), and the first suction accessory (51) and the second suction accessory (52) are arranged on the surfaces of the support body (11) and the vacuum drawer (13) facing each other.

7. The apparatus of claim 6, wherein the means for storing comprises a plurality of pockets. At least one of the first suction accessory (51) and the second suction accessory (52) is an electromagnet.

8. The apparatus of claim 6, wherein the means for storing comprises a plurality of containers. The fixing assembly (50) further comprises a buffer member (53) arranged on the surface of the support body (11) facing the vacuum drawer (13) and sleeved on the first suction accessory (51).

9. The apparatus of claim 5, wherein, The air extraction assembly (30) comprises an air extraction pump (31), a second pipeline (34) and a second control valve (35), the air extraction pump (31) has an air extraction end (311), the second pipeline (34) is connected between the second cavity (131) and the air extraction end (311), and the second control valve (35) is connected to the second pipeline (34) and used for controlling the opening and closing of the second pipeline (34). When the air pressure in the second cavity (131) is greater than a preset air pressure value, the air extraction pump (31) is started, and the second control valve (35) is opened.

10. The apparatus of claim 9, wherein the at least one of the plurality of compartments is configured to store a plurality of food items. The support body (11) is internally provided with a second chamber (112), and the vacuum drawer (13) is movably arranged in the second chamber (112); The air extraction assembly (30) further comprises a pressure relief valve (36) and a pressure relief pipeline (37), the pressure relief pipeline (37) is located outside the flow path of air flow flowing from the second cavity (131) to the outside and is connected to the second pipeline (34), and the pressure relief valve (36) is connected to the pressure relief pipeline (37) and used for controlling the opening and closing of the pressure relief pipeline (37). The pressure relief valve (36) and the second control valve (35) are configured to be opened before the vacuum drawer (13) is extracted from the second chamber (112).

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