Low-pressure fresh-keeping container and low-temperature fresh-keeping equipment

Abstract

The utility model discloses a low-pressure fresh-keeping container and low-temperature fresh-keeping equipment with the low-pressure fresh-keeping container, and relates to the technical field of fresh-keeping equipment, the low-pressure fresh-keeping container comprises a container assembly and an air exhaust assembly, and the container assembly is provided with a containing cavity; the air exhaust assembly is connected with the container assembly, and the air exhaust assembly is configured to be manually driven to exhaust air from the containing cavity. According to the low-pressure fresh-keeping container provided by the embodiment of the utility model, the manual air exhaust assembly is arranged, so that the fresh-keeping effect can be improved, the manufacturing and using cost can be reduced, and the application flexibility can be improved.

Description

Technical Field

[0001] This utility model relates to the field of preservation equipment technology, and in particular to a low-pressure preservation container and a low-temperature preservation device including the low-pressure preservation container. Background Technology

[0002] Vacuum preservation is a method that helps extend the shelf life of food and improve its preservation effect. A vacuum is typically achieved by venting gas from a sealed device, creating a negative pressure environment inside. In related technologies, the power to expel the gas is usually electric, such as through a vacuum pump. Vacuum pumps do not require user operation, but they are relatively expensive, have a shorter lifespan, and generate noise during operation. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to provide a low-pressure food preservation container with a manual vacuum component, which can improve preservation effects while reducing manufacturing and usage costs, and also enhance application flexibility.

[0004] Another objective of this invention is to provide a low-temperature preservation device, including the aforementioned low-pressure preservation container.

[0005] A low-pressure food preservation container according to an embodiment of the present invention includes: a container assembly and an air extraction assembly, the container assembly having a receiving cavity; the air extraction assembly is connected to the container assembly and is configured to be manually driven to extract air from the receiving cavity.

[0006] The low-pressure food preservation container according to the present invention can improve the preservation effect while reducing manufacturing and usage costs by setting a manual air extraction component, and also improve the flexibility of application.

[0007] In addition, the low-pressure food preservation container according to the above embodiments of this utility model may also have the following additional technical features:

[0008] In some examples of this utility model, the container assembly has an air extraction port communicating with the storage cavity. The air extraction assembly includes an air extraction valve and a pump body. The air extraction valve is located in the container assembly and configured to control the air extraction port to emit air in one direction. The pump body has an air extraction chamber suitable for manual driving to change the volume. When the air extraction valve is open, the air extraction chamber is communicating with the storage cavity. When the air extraction valve is closed, the air extraction chamber is separated from the storage cavity.

[0009] In some examples of this utility model, the air extraction valve includes a connecting part, a first sealing part, and a limiting part. The first sealing part and the limiting part are connected to the connecting part. The connecting part passes through the air extraction port. The first sealing part covers the outer end of the air extraction port. The limiting part is located at the inner end of the air extraction port. The first sealing part is configured as a flexible structure that can elastically deform to open the air extraction port.

[0010] In some examples of this utility model, the limiting part is located inside the inner end of the air extraction port, and the inner end of the air extraction port is provided with at least one notch, which connects the air extraction port and the receiving cavity.

[0011] In some examples of this utility model, the air extraction valve is designed as a one-piece flexible structure.

[0012] In some examples of this utility model, the pump body includes: a pump housing and a first elastic portion, wherein the pump housing forms the suction chamber between the pump housing and the container assembly, the pump housing is opposite to the suction port, and the pump housing is configured to be pressed toward the suction port to compress the suction chamber; the first elastic portion is configured to elastically drive the pump housing to move away from the suction port to expand the suction chamber.

[0013] In some examples of this utility model, the container assembly is provided with a mounting groove, the pump housing is slidably inserted into the mounting groove, and the pump housing is sealed to the mounting groove.

[0014] In some examples of this utility model, the outer surface of the container assembly is provided with a mounting groove, the pump housing passes through the mounting groove, the portion of the pump housing located in the mounting groove is provided with a flange, the container assembly is provided with a mounting seat, the mounting seat is opposite to the bottom wall of the mounting groove, and the flange is limited between the mounting seat and the bottom wall of the mounting groove.

[0015] In some examples of this utility model, the pump housing is provided with a first positioning part, the container assembly is provided with a second positioning part, the first positioning part and the second positioning part are opposite to each other, and the first elastic part is provided as a spring with its two ends respectively positioned at the first positioning part and the second positioning part.

[0016] In some examples of this utility model, the low-pressure preservation container further includes a pressure relief component, which is connected to the container assembly and is used to relieve pressure in the storage cavity.

[0017] In some examples of this utility model, the container assembly further has a pressure relief hole communicating with the receiving cavity. The pressure relief assembly includes: a pressure relief valve, a second sealing part, and a second elastic part. The pressure relief valve passes through the pressure relief hole and is movable along the axis of the pressure relief hole. The second sealing part is connected to the pressure relief valve and is located on the side of the pressure relief hole near the receiving cavity. The second sealing part is used to open and close the pressure relief hole. The second elastic part is configured to elastically drive the pressure relief valve to move outward from the receiving cavity to close the pressure relief hole.

[0018] In some examples of this utility model, the container assembly includes: a barrel body and a panel, the storage cavity is disposed in the barrel body, and the front of the barrel body is open; the panel is configured to open and close the opening, and the air extraction assembly is disposed in the panel.

[0019] In some examples of this utility model, the barrel body is an integral barrel body structure.

[0020] In some examples of this utility model, the barrel body includes an upper half and a lower half, which are connected and bonded or welded together.

[0021] In some examples of this utility model, the food preservation container further includes a drawer, which is inserted through the storage cavity and connected to the panel, and the drawer has a storage cavity inside.

[0022] The low-temperature preservation equipment according to an embodiment of the present invention includes: a body, a refrigeration device, and the aforementioned low-pressure preservation container. The body is provided with a refrigeration chamber; the refrigeration device is disposed in the body and is used for refrigerating the refrigeration chamber; the low-pressure preservation container is disposed in the refrigeration chamber.

[0023] According to the low-temperature preservation equipment of this utility model embodiment, by applying the aforementioned low-pressure preservation container, the vacuum component can be manually operated as needed during use to achieve manual vacuuming, which improves the flexibility of use and reduces costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the low-pressure food preservation container in some embodiments of this utility model;

[0025] Figure 2 This is a cross-sectional view of the low-pressure food preservation container in some embodiments of this utility model;

[0026] Figure 3 yes Figure 2 Enlarged view of the local structure at point A in the middle circle;

[0027] Figure 4 This is a partial enlarged view of the structure of the low-pressure food preservation container in some embodiments of this utility model;

[0028] Figure 5 This is a partial structural assembly diagram of a low-pressure food preservation container in some embodiments of the present invention (showing drawer, panel, air extraction assembly and pressure relief assembly).

[0029] Figure label:

[0030] 100. Low-pressure food preservation container; 10. Container assembly; 110. Storage cavity; 11. Bucket body; 101. Air extraction port; 102. Notch groove; 103. Mounting groove; 12. Mounting base; 122. Second positioning part; 13. Panel; 14. Drawer; 20. Air extraction assembly; 210. Air extraction chamber; 21. Air extraction valve; 212. Connecting part; 211. First sealing part; 213. Limiting part; 22. Pump body; 223. Pump housing; 222. Flange; 224. Sealing ring; 221. First positioning part; 225. First elastic part; 30. Pressure relief assembly; 301. Pressure relief hole; 310. Fitting groove; 31. Pressure relief valve; 311. Pressing part; 312. Connecting rod part; 302. Positioning groove; 32. Second sealing part; 33. Second elastic part. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0032] Oxygen in the air causes food oxidation. To improve preservation, this invention proposes a low-pressure preservation container 100 with an air extraction component 20, which can extract air from the container to reduce the oxygen concentration inside, thereby improving preservation. Specifically, in conjunction with... Figures 1 to 5 The low-pressure preservation container 100 according to an embodiment of the present invention includes: a container assembly 10 and an air extraction assembly 20. The container assembly 10 has a receiving cavity 110; the air extraction assembly 20 is connected to the container assembly 10 and is configured to be manually driven to extract air from the receiving cavity 110. Thus, by manually controlling the air extraction assembly 20, air can be expelled from the receiving cavity 110 to achieve low-pressure preservation. The inclusion of a manually operated air extraction assembly 20 helps to reduce manufacturing and usage costs.

[0033] In addition, users can flexibly control the manual vacuum component 20 according to the actual application situation. For example, in some cases, there is no need for vacuuming, or the amount of vacuuming can be manually controlled according to the type of food. Compared with the electric vacuum component, the manual vacuum component 20 is more flexible, has a lower cost of use, and has a simpler structure, which helps to improve durability.

[0034] According to the embodiment of the present invention, the low-pressure food preservation container 100, by setting a manual air extraction component 20, can improve the preservation effect while reducing manufacturing and usage costs, and also improve the flexibility of application.

[0035] Combination Figure 3 and Figure 5 In some embodiments of this utility model, the container assembly 10 has an air extraction port 101 communicating with the receiving cavity 110. The air extraction assembly 20 includes an air extraction valve 21 and a pump body 22. The air extraction valve 21 is located in the container assembly 10 and configured to control the air extraction port 101 to emit air in one direction. The pump body 22 has an air extraction chamber 210 suitable for manual volume change. When the air extraction valve 21 is open, the air extraction chamber 210 is connected to the receiving cavity 110; when the air extraction valve 21 is closed, the air extraction chamber 210 is separated from the receiving cavity 110. Specifically, the volume of the air extraction chamber 210 is changed by moving the pump body 22. When the volume of the air extraction chamber 210 decreases, the gas pressure increases; conversely, when the volume of the air extraction chamber 210 increases, the gas pressure decreases. Therefore, during the air extraction process, gas is extracted, reducing the amount of gas in the cavity, thereby reducing the internal pressure of the cavity. By adjusting the volume of the air extraction chamber 210, the air extraction effect can be enhanced.

[0036] In other words, when the user manually presses the pump body 22, the volume of the suction chamber 210 decreases, the air pressure increases, and the suction valve 21 opens. At this time, the receiving chamber 110 is connected to the suction chamber 210, and the air in the container is extracted. Therefore, the air pressure can be effectively controlled by adjusting the volume in the suction chamber 210, thereby achieving an efficient suction process.

[0037] Furthermore, in some embodiments of this utility model, combined with Figure 3The suction valve 21 includes a connecting part 212, a first sealing part 211, and a limiting part 213. The first sealing part 211 and the limiting part 213 are connected to the connecting part 212. The connecting part 212 passes through the suction port 101. The first sealing part 211 covers the outer end of the suction port 101, and the limiting part 213 is located at the inner end of the suction port 101. Specifically, the connecting part 212 is movably inserted through the suction port 101. The first sealing part 211 and the limiting part 213 are located at opposite ends of the connecting part 212. The first sealing part 211 is used to separate the suction chamber 210 from the receiving chamber 110. The limiting part limits the suction valve 21 to the suction port 101 and restricts the movement of the suction valve 21. Thus, unidirectional flow of gas in the receiving chamber 110 can be achieved. More specifically, the first sealing part 211 is designed as a flexible structure that can elastically deform to open the suction port 101. Therefore, when the suction port 101 is closed, the first sealing part 211 can fit tightly against the outer end of the suction port 101. Furthermore, when the pump body 22 is operating, it can deform under pressure, facilitating valve opening, and can quickly return to its original shape, improving the unidirectional control effect of the suction valve 21. In addition, the flexible structure can improve the fatigue resistance and adaptability of the suction valve 21, bringing convenience to the user.

[0038] Furthermore, in some embodiments of this utility model, the limiting part 213 is provided on the inner side of the inner end of the air extraction port 101, and the inner end of the air extraction port 101 is provided with at least one notch 102. The notch 102 connects the air extraction port 101 and the receiving cavity 110. When the first sealing part 211 opens the air extraction port 101, the gas in the receiving cavity 110 can be discharged through the notch 102.

[0039] It should be noted that the inner and outer sides are relative to the cavity. Specifically, one end of the air extraction port 101 is connected to the receiving cavity 110, and the other end is connected to the air extraction cavity 210. The inner end of the air extraction port 101 can be located in the receiving cavity 110, and the outer end of the air extraction port 101 can be located in the air extraction cavity 210. Therefore, the inner side of the inner end of the air extraction port 101 is located in the receiving cavity 110.

[0040] In some embodiments of this utility model, the air extraction valve 21 is designed as an integrally formed flexible structure, which facilitates manufacturing and improves structural stability and durability.

[0041] In some embodiments of this utility model, combined with Figure 3The pump body 22 includes a pump housing 223 and a first elastic portion 225. A suction chamber 210 is formed between the pump housing 223 and the container assembly 10. The pump housing 223 is opposite to the suction port 101 and is configured to be pressed towards the suction port 101 to compress the suction chamber 210. This reduces tortuosity and resistance in the fluid flow path, thereby improving fluid flow efficiency, increasing the working efficiency of the pump body 22, and optimizing space and improving structural compactness. The first elastic portion 225 is configured to elastically drive the pump housing 223 to move away from the suction port 101 to expand the suction chamber 210. Specifically, the first elastic portion 225 can be used to adjust the pressure of the pump body 22, which to some extent determines the opening degree of the suction valve 21. The first elastic portion 225 can also automatically drive the pump housing 223 to reset, which helps maintain the sealing state of the suction assembly 20.

[0042] In some embodiments of this utility model, the container assembly 10 is provided with a mounting groove 103, and the pump housing 223 is slidably inserted into the mounting groove 103. Specifically, the mounting groove 103 can be used to accommodate the pump housing 223 and provide space for the pump housing 223 to move, so that the user can press the pump housing 223 to realize the reciprocating motion of the pump body 22. Moreover, the pump housing 223 and the mounting groove 103 are sealed together, so that the air extraction chamber 210 can be kept sealed when the air extraction valve 21 is closed.

[0043] In some embodiments of this utility model, combined with Figure 3 and Figure 5 The outer surface of the container assembly 10 is provided with a mounting groove 103. A pump housing 223 passes through the mounting groove 103. The portion of the pump housing 223 located within the mounting groove 103 has a flange 222. The container assembly 10 is provided with a mounting base 12, which is opposite to the bottom wall of the mounting groove 103, and the flange 222 is confined between the mounting base 12 and the bottom wall of the mounting groove 103. Figure 3 The mounting base 12 can confine the pump housing 223 within the mounting groove 103. When the pump housing 223 moves within the mounting groove 103, it has a first position and a second position. In the first position, the volume of the suction chamber 210 is at its minimum. In the second position, the flange 222 of the pump body 22 abuts against the mounting base 12, and the volume of the suction chamber 210 is at its maximum. Therefore, the mounting base 12 can be used to position and limit the pump housing 223, thereby improving structural stability and the functionality of the pump body 22.

[0044] Combination Figure 3 The outer periphery of the flange 222 is provided with a sealing ring mounting groove, and a sealing ring 224 is provided between the flange 222 and the inner wall of the mounting groove 103. The sealing ring 224 forms a seal between the flange 222 and the inner wall of the mounting groove 103. A part of the sealing ring 224 extends into the sealing ring mounting groove, and a part protrudes out of the sealing ring mounting groove and abuts or is press-fitted with the inner wall of the mounting groove 103 to improve the sealing effect.

[0045] In some embodiments of this utility model, combined with Figure 3 The pump housing 223 is provided with a first positioning part 221, and the container assembly 10 is provided with a second positioning part 122. The first positioning part 221 and the second positioning part 122 are opposite to each other. The first elastic part 225 is a spring with its two ends respectively positioned on the first positioning part 221 and the second positioning part 122. Specifically, the first positioning part 221 and the second positioning part 122 can be used to position the first elastic part 225. One end of the first elastic part 225 is sleeved on the outer periphery of the first positioning part 221, and the other end is sleeved on the outer periphery of the second positioning part 122. Thus, a movable connection between the pump housing 223 and the container assembly 10 can also be realized. When the pump housing 223 is close to the container assembly 10, the volume of the air extraction chamber 210 constructed between the pump housing 223 and the container assembly 10 decreases. When the pump housing 223 is away from the container assembly 10, the volume of the air extraction chamber 210 constructed between the pump housing 223 and the container assembly 10 increases. Thus, the air pressure is regulated, and the air extraction effect of the container assembly 10 is achieved.

[0046] In some embodiments of this utility model, combined with Figure 1 and Figure 4 The low-pressure food storage container 100 also includes a pressure relief assembly 30 for depressurization. The pressure relief assembly 30 is connected to the container assembly 10 and is used to depressurize the storage cavity 110. When the user needs to open the low-pressure food storage container 100, the pressure inside the storage cavity 110 can be released through the pressure relief assembly 30 to facilitate opening the storage cavity 110 of the container assembly 10.

[0047] In some embodiments of this utility model, the container assembly 10 further has a pressure relief hole 301 communicating with the receiving cavity 110. The pressure relief assembly 30 includes: a pressure relief valve 31, a second sealing part 32, and a second elastic part 33. The pressure relief valve 31 passes through the pressure relief hole 301 and is movable along the axis of the pressure relief hole 301. The second sealing part 32 is connected to the pressure relief valve 31 and is located on the side of the pressure relief hole 301 near the receiving cavity 110. The second sealing part 32 is used to open and close the pressure relief hole 301. The second elastic part 33 is configured to elastically drive the pressure relief valve 31 to move outward toward the receiving cavity 110 to close the pressure relief hole 301. Specifically, in its natural state, the second elastic part 33 keeps the second sealing part 32 in a sealed state. When the user needs to relieve pressure, they can drive the pressure relief valve 31, thereby driving the second sealing part 32 away from the pressure relief hole 301 to open the pressure relief hole 301 and connect the receiving cavity 110 to the outside. Since the inside of the receiving cavity 110 is in a low-pressure state, lower than the atmospheric pressure of the external environment, external air can enter the receiving cavity 110 from the pressure relief hole 301 to achieve pressure relief of the receiving cavity 110. When the force of the user driving the pressure relief valve 31 disappears, the second elastic part 33 resets and can drive the second sealing part 32 to close the pressure relief hole 301. Specifically, the pressure relief valve 31 and the pressure relief hole 301 are arranged along the axis, which facilitates operation, better transmission of external driving force, and improves the compactness of the structure.

[0048] More specifically, the container assembly 10 is provided with a mating groove 310 for accommodating the pressure relief assembly 30, the pressure relief valve 31 is movably disposed in the mating groove 310, the pressure relief hole 301 is disposed in the bottom wall of the mating groove 310, and the second elastic part 33 abuts against the bottom wall of the mating groove 310 and the pressure relief valve 31 to provide a reset force for the pressure relief valve 31. The pressure relief valve 31 includes a push-button part 311 and a connecting rod part 312. The connecting rod part 312 passes through the pressure relief hole 301. One end of the connecting rod part 312 is connected to one side surface of the push-button part 311. The second elastic part 33 passes through the connecting rod part 312 and abuts against one side surface of the push-button part 311. The other end of the connecting rod part 312 is provided with a positioning groove 302. The second sealing part 32 is sleeved in the positioning groove and protrudes from the positioning groove 302. The second sealing part 32 is located inside the pressure relief hole 301, i.e., inside the receiving cavity 110. The second sealing part 32 is located outside the pressure relief hole 301, i.e., inside the mating groove 310. In application, the user presses the other side of the push part 311 of the pressure relief valve 31, the second elastic part 33 is compressed, the connecting rod part 312 of the pressure relief valve 31 moves towards the inside of the receiving cavity 110, so that the second sealing part 32 moves synchronously, so that the second sealing part 32 leaves the pressure relief hole 301, and the receiving cavity 110 can be connected to the external space through the pressure relief hole 301. After the pressure is released, the user releases the pressure relief valve 31, the second elastic part 33 resets, drives the pressure relief valve 31 to move outward, the second elastic part 33 resets, and abuts against the pressure relief hole 301, forming a sealing structure again.

[0049] In some embodiments of this utility model, combined with Figure 1 The container assembly 10 includes a barrel 11 and a panel 13. A storage cavity 110 is disposed in the barrel 11, and the front of the barrel 11 is open. The panel 13 is configured to open and close the opening, and an air extraction assembly 20 is disposed in the panel 13. Specifically, the container assembly 10 has a barrel 11 that can be opened and closed. Users can store food in the storage cavity 110 of the barrel 11 through the opening, and then close the storage cavity 110 through the panel 13 to isolate the food that needs to be preserved from the external space.

[0050] In some embodiments of this utility model, the barrel body 11 is an integral barrel body 11 structure, which facilitates manufacturing and assembly.

[0051] In some embodiments of this utility model, the barrel body 11 includes an upper half and a lower half, which are connected and bonded or welded together.

[0052] Combination Figure 1 and Figure 4 In some embodiments of this utility model, the low-pressure food preservation container 100 further includes a drawer 14, which is inserted through the storage cavity 110 and connected to the panel 13. The drawer 14 has a storage cavity inside. This arrangement facilitates the user's access to and from items. In use, the user can pull the panel 13 out of the storage cavity 110 using the handle, and the items in the storage cavity can be pulled out along with the drawer 14 for easy retrieval. After the user places items into the storage cavity, the user can push the drawer 14 back into the storage cavity 110 using the handle, and the items in the storage cavity can be pushed back in along with the drawer 14, improving user convenience.

[0053] This utility model also provides a low-temperature preservation device, which includes a body, a refrigeration device, and the low-pressure preservation container 100 in the above embodiments.

[0054] The machine body is equipped with a refrigeration compartment, and a refrigeration device is located in the machine body for refrigeration of the refrigeration compartment. A low-pressure preservation container 100 is located in the refrigeration compartment. By using the aforementioned low-pressure preservation container 100, the user's safety can be improved and the user's hand injury can be avoided.

[0055] Specifically, the low-pressure preservation container 100 is placed in a refrigeration room and refrigerated by a refrigeration device in the refrigeration room, so that the low-pressure preservation container 100 is in a low-temperature environment. Under the low-temperature environment, the biological activities of bacteria and other organisms are reduced, thereby achieving the low-temperature preservation function.

[0056] According to the low-temperature preservation equipment of this utility model embodiment, by applying the aforementioned low-pressure preservation container 100, the vacuum component 20 can be manually operated as needed during use to achieve manual vacuuming, which is beneficial to improving the flexibility of use and reducing costs.

[0057] The following description, with reference to the accompanying drawings, describes a specific embodiment of the low-pressure food preservation container 100 of the present invention.

[0058] This utility model provides a low-pressure food preservation container 100, such as Figure 1 As shown, it mainly consists of a container assembly 10, an air extraction assembly 20, and a pressure relief assembly 30. The container assembly 10 includes a barrel 11, a panel 13, a sealing strip, and magnets. The magnets are respectively installed at the flange of the barrel opening of the barrel 11 and at the corresponding position of the panel 13. When the panel 13 is closed, due to the action of the magnets, the barrel 11, the sealing strip, and the panel 13 can form a container assembly 10. The air extraction assembly 20 is installed on the panel 13 and mainly consists of a pump housing 223, a first elastic part 225, and an air extraction valve 21. The air extraction valve 21 can be a silicone sheet or a rubber diaphragm one-way valve, and the whole assembly forms a piston structure with the cavity (i.e., the air extraction chamber 210) on the panel 13. The air extraction valve 21 blocks the air extraction port 101 of panel 13. When the pump housing 223 is pressed inward, due to the air pressure, the air extraction valve 21 completely blocks the air extraction port 101 on panel 13, and the gas in the receiving cavity 110 can only be discharged through the gap between the pump housing 223 and the cavity of panel 13. After the pump housing 223 is pressed, it gradually rebounds under the action of the first elastic part 225. At this time, there is a pressure difference between panel 13 and the inside of panel 13, and the air extraction valve 21 will deform, causing some of the gas inside panel 13 to be discharged into the cavity of panel 13. In this way, repeated pressing action can effectively discharge the gas from panel 13, making panel 13 a negative pressure state. The pressure relief component 30 is installed on panel 13 and mainly consists of pressure relief valve 31, second sealing part 32 and second elastic part 33.

[0059] When the pressure relief valve 31 is pressed inward, the hole on panel 13 communicates with the outside, restoring the negative pressure state of panel 13 to a normal pressure state, allowing panel 13 to be opened. When pressing stops, the hole on panel 13 is sealed by the sealing ring 224 under the action of the second elastic part 33. Thus, the gas inside container assembly 10 can be discharged by the movement of the pressing structure, achieving a negative pressure state inside container assembly 10, which is highly flexible and low-cost.

[0060] Optionally, the sealing ring 224 and the second sealing part 32 can be silicone rings. The first elastic part 225 and the second elastic part 33 can be springs.

[0061] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0062] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this utility model, unless otherwise explicitly 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] In this utility model, unless otherwise explicitly 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.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A low-pressure food preservation container (100), characterized in that, include: Container assembly (10) having a receiving cavity (110); An air extraction assembly (20) is connected to the container assembly (10) and is configured to be manually driven to extract air from the receiving cavity (110). A pressure relief assembly (30) is connected to the container assembly (10) and is used to relieve pressure in the receiving cavity (110); The container assembly (10) has an air extraction port (101) communicating with the storage cavity (110). The air extraction assembly (20) includes an air extraction valve (21) and a pump body (22). The air extraction valve (21) is located in the container assembly (10) and configured to control the air extraction port (101) to unidirectionally release air. The pump body (22) is provided with an air extraction chamber (210) suitable for manually driving volume change. When the air extraction valve (21) is open, the air extraction chamber (210) is communicating with the storage cavity (110). When the air extraction valve (21) is closed, the air extraction chamber (210) is separated from the storage cavity (110).

2. The low-pressure food preservation container (100) according to claim 1, characterized in that, The air extraction valve (21) includes a connecting part (212), a first sealing part (211), and a limiting part (213). The first sealing part (211) and the limiting part (213) are connected to the connecting part (212). The connecting part (212) passes through the air extraction port (101). The first sealing part (211) covers the outer end of the air extraction port (101). The limiting part (213) is located at the inner end of the air extraction port (101). The first sealing part (211) is a flexible structure that can elastically deform to open the air extraction port (101).

3. The low-pressure food preservation container (100) according to claim 2, characterized in that, The limiting part (213) is provided on the inner side of the inner end of the air extraction port (101), and the inner end of the air extraction port (101) is provided with at least one notch (102), the notch (102) connecting the air extraction port (101) and the receiving cavity (110). And / or, the air extraction valve (21) is configured as an integrally formed flexible structure.

4. The low-pressure food preservation container (100) according to any one of claims 1-3, characterized in that, The pump body (22) includes: A pump housing (223) is configured to form the suction chamber (210) between the pump housing (223) and the container assembly (10), the pump housing (223) being opposite to the suction port (101), the pump housing (223) being configured to be pressed toward the suction port (101) to compress the suction chamber (210). A first elastic part (225) is configured to elastically drive the pump housing (223) to move away from the air intake (101) to expand the air intake chamber (210).

5. The low-pressure food preservation container (100) according to claim 4, characterized in that, The container assembly (10) is provided with a mounting groove (103), the pump housing (223) is slidably inserted into the mounting groove (103), and the pump housing (223) is sealed to the mounting groove (103); Alternatively, the outer surface of the container assembly (10) is provided with a mounting groove (103), the pump housing (223) passes through the mounting groove (103), the portion of the pump housing (223) located in the mounting groove (103) is provided with a flange (222), the container assembly (10) is provided with a mounting seat (12), the mounting seat (12) is opposite to the bottom wall of the mounting groove (103), and the flange (222) is limited to the space between the mounting seat (12) and the bottom wall of the mounting groove (103); Alternatively, the pump housing (223) is provided with a first positioning part (221), and the container assembly (10) is provided with a second positioning part (122). The first positioning part (221) and the second positioning part (122) are opposite to each other, and the first elastic part (225) is a spring with its two ends respectively positioned on the first positioning part (221) and the second positioning part (122).

6. The low-pressure food preservation container (100) according to claim 1, characterized in that, The container assembly (10) also has a pressure relief port (301) communicating with the receiving cavity (110), the pressure relief assembly (30) comprising: A pressure relief valve (31) is provided through the pressure relief hole (301) and is movable along the axis of the pressure relief hole (301); The second sealing part (32) is connected to the pressure relief valve (31) and is located on the side of the pressure relief hole (301) near the receiving cavity (110). The second sealing part (32) is used to open and close the pressure relief hole (301). The second elastic part (33) is configured to elastically drive the pressure relief valve (31) to move outward from the receiving cavity (110) to close the pressure relief hole (301).

7. The low-pressure food preservation container (100) according to claim 1, characterized in that, The container component (10) includes: The barrel body (11) has a storage cavity (110) located in the barrel body (11) and the front of the barrel body (11) is open. A panel (13) configured to open and close the opening, wherein the air extraction assembly (20) is disposed on the panel (13).

8. The low-pressure food preservation container (100) according to claim 7, characterized in that, The barrel (11) is an integral barrel (11) structure; or, the barrel (11) includes an upper half and a lower half, the upper half and the lower half are connected and bonded or welded together; or, the preservation container also includes a drawer (14), the drawer (14) is inserted through the storage cavity (110) and connected to the panel (13), and the drawer (14) is provided with a storage cavity.

9. A low-temperature preservation device, characterized in that, include: The machine body, which is equipped with a refrigeration compartment; A refrigeration device, which is located on the machine body, is used for refrigerating the refrigeration compartment; The low-pressure preservation container (100) according to any one of claims 1-8, wherein the low-pressure preservation container (100) is disposed in the refrigeration chamber.

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