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 capable of solving the problem of uncontrollable pressure, and relates to the technical field of fresh-keeping equipment. The low-pressure fresh-keeping container comprises a barrel body assembly, a pressure detection part and an air exhaust assembly, the barrel body assembly is provided with a containing cavity, the pressure detection part is configured to detect the pressure in the barrel body assembly, and the air exhaust assembly communicates with the barrel body assembly and is configured to operate according to the pressure detection part. According to the low-pressure fresh-keeping container, it can be guaranteed that the pressure value of the containing cavity is kept at the preset value, the low-pressure low-oxygen environment of the low-pressure fresh-keeping container is kept, and therefore the fresh-keeping effect is 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] In related technologies, vacuum preservation is a method that helps extend the shelf life of food and improve its preservation effect. Currently, a vacuum is typically achieved by using a vacuum pump to evacuate air from a vacuum container, creating a negative pressure environment. However, since vacuum containers are relatively sealed, air can leak from the sealing surfaces over time, thus affecting the preservation effect. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, one objective of this utility model is to provide a low-pressure preservation container that can solve the problem of uncontrollable pressure, so that the low-pressure preservation container maintains a low-pressure and low-oxygen environment, thereby improving the preservation effect.

[0005] Another objective of this invention is to provide a low-temperature preservation device, which includes the aforementioned low-pressure preservation container.

[0006] According to an embodiment of the present invention, the low-pressure preservation container includes a barrel assembly, a pressure detection element, and an air extraction assembly. The barrel assembly has a receiving cavity, the pressure detection element is configured to detect the pressure inside the barrel assembly, and the air extraction assembly is connected to the barrel assembly and configured to operate according to the pressure detection element.

[0007] According to the embodiments of the present invention, the low-pressure preservation container can ensure that the storage cavity is maintained at a predetermined pressure value, so that the low-pressure preservation container maintains a low-pressure and low-oxygen environment, thereby improving the preservation effect.

[0008] 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:

[0009] Optionally, the low-pressure preservation container further includes a connecting pipe having a first interface, a second interface, and a third interface. The first interface is connected to the receiving cavity, the second interface is connected to the pressure detection element, and the third interface is connected to the air extraction assembly.

[0010] Optionally, the wall panel of the barrel assembly is provided with a vent, the vent penetrating the wall panel, a first pipe connecting the first interface to the vent, a second pipe connecting the second interface to the pressure detection element, and a third pipe connecting the third interface to the air extraction assembly.

[0011] Optionally, the first pipeline includes a first branch pipe and a second branch pipe, the first branch pipe being connected to the vent and extending in a direction generally perpendicular to the wall panel, the second branch pipe being connected to the first branch pipe and extending in a direction generally parallel to the wall panel, and the second branch pipe being connected to the first interface.

[0012] Optionally, the pressure detection element and the air extraction assembly are distributed in the left-right direction, the connecting pipe is disposed between the pressure detection element and the air extraction assembly, the second interface and the third interface are distributed in the left-right direction, and the second pipeline and the third pipeline extend in the left-right direction.

[0013] Optionally, the storage cavity has an opening at the front, and the low-pressure food preservation container also includes a drawer assembly. The drawer assembly includes a drawer body and a drawer panel. The drawer panel is connected to the front end of the drawer body and is configured to open and close the opening. When the drawer panel is closed, the drawer body is located in the storage cavity.

[0014] Optionally, the pressure detection element and the air extraction assembly are located at the rear of the top wall of the barrel assembly; and / or, the pressure detection element and the air extraction assembly are distributed in the left-right direction.

[0015] Optionally, the low-pressure preservation container further includes a support and a handle. The support is rotatably connected to the drawer assembly and has a locking position for locking the drawer assembly in the container body and an unlocking position for releasing the lock on the drawer assembly. The handle is connected to the support and configured to drive the handle to rotate.

[0016] Optionally, the handle is a long strip extending in the left-right direction, and the left and right ends of the handle are connected to the bracket. The bracket on the left side of the handle is rotatably connected to the left side of the drawer panel, and the bracket on the right side of the handle is rotatably connected to the right side of the drawer panel.

[0017] Optionally, the bracket is rotatably connected to the middle area of ​​the drawer panel along the vertical direction, and the handle is located at the upper or lower part of the front of the drawer panel.

[0018] Optionally, the barrel assembly includes a shell and a surrounding plate, the shell has a front opening, the storage cavity is located inside the shell, the surrounding plate is located outside the shell and connected to the shell, the surrounding plate surrounds an installation cavity whose bottom is closed by the shell, and the pressure detection element and the air extraction assembly are located in the installation cavity.

[0019] Optionally, the barrel assembly further includes a plurality of reinforcing ribs, which are connected to the shell and cover the peripheral and bottom walls of the shell. The plurality of reinforcing ribs are distributed in a crisscross pattern and are connected to the surrounding panel.

[0020] Optionally, the barrel assembly further includes at least two first positioning ribs, which are connected to the shell and the enclosure. The first positioning ribs are provided with a first notch that matches the shape of the outer peripheral surface of the suction assembly. The at least two first positioning ribs are spaced apart in the left-right direction, and the suction assembly is positioned at the first notch.

[0021] Optionally, the barrel assembly further includes at least two second positioning ribs, which are connected to the shell and the enclosure. The second positioning ribs are provided with second notches, and the at least two second positioning ribs are distributed at intervals in the left-right direction. The pressure detection element is positioned at the second notch.

[0022] Optionally, the pressure detection element is a pressure switch, and the air extraction assembly is configured to operate when the pressure value in the receiving cavity is greater than a set threshold of the pressure switch.

[0023] According to an embodiment of the present invention, the low-temperature preservation equipment includes a body, a refrigeration device, and a low-pressure preservation container. The body is provided with a refrigeration chamber, the refrigeration device is located in the body and is used for refrigerating the refrigeration chamber, and the low-pressure preservation container is located in the refrigeration chamber.

[0024] According to the embodiments of the present invention, the low-temperature preservation equipment can maintain a predetermined pressure value by using the aforementioned low-pressure preservation container, thereby improving the performance of the low-temperature preservation equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a low-pressure food preservation container in some embodiments of this utility model.

[0026] Figure 2 This is a top view of the low-pressure food preservation container in some embodiments of this utility model.

[0027] Figure 3 This is a cross-sectional view of the barrel assembly in some embodiments of this utility model.

[0028] Figure 4This is a flowchart of a low-pressure preservation method in some embodiments of this utility model.

[0029] Figure label:

[0030] Low-pressure food preservation container 100, container assembly 10, shell 11, surrounding plate 12, mounting cavity 13, reinforcing rib 14, first positioning rib 15, second positioning rib 16, vent 17, storage cavity 18, pressure detection element 20, air extraction assembly 30, connecting pipe 40, first pipe 50, second pipe 60, third pipe 70, drawer assembly 80, drawer body 81, drawer panel 82, bracket 83, handle 84. 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] This invention proposes a low-pressure preservation container 100 that solves the problem of uncontrollable pressure, enabling the container to maintain a low-pressure, low-oxygen environment, thereby improving the preservation effect. Furthermore, a low-temperature preservation device incorporating this low-pressure preservation container 100 is also proposed.

[0033] like Figures 1 to 3 As shown, the low-pressure food preservation container 100 according to an embodiment of the present invention includes a barrel assembly 10, a pressure detection element 20, and an air extraction assembly 30.

[0034] The container assembly 10 has a receiving cavity 18, and the pressure detection element 20 is configured to detect the pressure inside the container assembly 10. The air extraction component 30 is connected to the container assembly 10 and is configured to operate according to the pressure detection element 20. In this way, the pressure in the receiving cavity 18 can be maintained at a predetermined value, thereby improving the preservation effect of the low-pressure preservation container 100.

[0035] Specifically, when using the low-pressure preservation container 100, the user can place items in the storage cavity 18 and use the vacuum assembly 30 to extract the gas from the storage cavity 18, creating a low-pressure, low-oxygen environment, especially a vacuum environment, within the storage cavity 18 to preserve the items under low pressure. However, as the preservation time increases, gas leakage may occur in the sealing structure of the container assembly 10, leading to an increase in pressure in the storage cavity 18. Therefore, the pressure inside the container assembly 10, i.e., the pressure in the storage cavity 18, can be detected by the pressure detection element 20. When the pressure inside the storage cavity 18 is higher than a predetermined value, the vacuum assembly 30 can be activated to extract the gas from the storage cavity 18 until the pressure inside the storage cavity 18 is lower than the pressure value, at which point the vacuum assembly 30 stops operating. This stabilizes the gas pressure inside the storage cavity 18 at the predetermined value, thereby creating a low-pressure, low-oxygen environment with a long-term stable pressure state within the storage cavity 18, thus improving the preservation effect of the low-pressure preservation container 100.

[0036] Therefore, the low-pressure preservation container 100 according to the present invention can ensure that the storage cavity 18 is maintained at a predetermined pressure value, so that the low-pressure preservation container 100 maintains a low-pressure and low-oxygen environment, thereby improving the preservation effect.

[0037] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the low-pressure preservation container 100 further includes a connecting pipe 40, which has a first interface, a second interface and a third interface. The first interface is connected to the receiving cavity 18, the second interface is connected to the pressure detection element 20, and the third interface is connected to the air extraction component 30. In this way, the structure of the low-pressure preservation container 100 can be simplified and the integration of the low-pressure preservation container 100 can be improved through the connecting pipe 40.

[0038] Understandably, when detecting the air pressure inside the storage cavity 18, the airflow inside the storage cavity 18 can flow along the first interface, the connecting pipe 40, and the second interface to the pressure detection element 20, which detects the pressure inside the storage cavity 18. When discharging the airflow inside the storage cavity 18, the airflow inside the storage cavity 18 can flow along the first interface, the connecting pipe 40, the third interface, and the suction assembly 30 to discharge the air, thereby creating a low-pressure, low-oxygen environment inside the storage cavity 18. In this way, the connection between the storage cavity 18, the pressure detection element 20, and the suction assembly 30 can be achieved through the connecting pipe 40, simplifying the structure of the low-pressure preservation container 100 and improving the structural strength of the low-pressure preservation container 100.

[0039] In addition, in some specific examples of this utility model, the connecting pipe 40 may be provided in the barrel assembly 10, the pressure detection element 20, or the air extraction assembly 30.

[0040] like Figures 1 to 3As shown, in some embodiments of this utility model, the wall panel of the barrel assembly 10 is provided with a vent 17, which penetrates the wall panel. A first pipe 50 is connected between the first interface and the vent 17, a second pipe 60 is connected between the second interface and the pressure detection element 20, and a third pipe 70 is connected between the third interface and the suction assembly 30. This arrangement facilitates the structural layout of the low-pressure preservation container 100 and improves assembly convenience through the pipes.

[0041] Specifically, a first pipe 50 is connected between the connecting pipe 40 and the receiving cavity 18, a second pipe 60 is connected between the connecting pipe 40 and the pressure detection element 20, and a third pipe 70 is connected between the connecting pipe 40 and the air extraction assembly 30. By lengthening or shortening the pipes, the connecting pipe 40, the pressure detection element 20 and the air extraction assembly 30 can be arranged on the barrel assembly 10. When the low-pressure preservation container 100 is installed on the body of the low-temperature preservation equipment, it avoids interference with other structures of the low-temperature preservation equipment, thereby improving the structural stability of the low-temperature preservation equipment.

[0042] like Figure 1 As shown, in some embodiments of this utility model, the first pipeline 50 includes a first branch pipe and a second branch pipe. The first branch pipe is connected to the vent 17 and extends in a direction generally perpendicular to the wall panel. The second branch pipe is connected to the first branch pipe and extends in a direction generally parallel to the wall panel. The second branch pipe is connected to the first interface. In this way, the structural stability of the low-pressure preservation container 100 can be improved, as well as the space utilization rate of the low-temperature preservation equipment can be improved.

[0043] In detail, the first pipeline 50 includes a first branch pipe and a second branch pipe. The second branch pipe is connected to the first branch pipe, and the first branch pipe is connected to the vent 17 and extends in a direction generally perpendicular to the wall panel. This facilitates the connection between the first branch pipe and the vent 17, thereby improving the connection stability between the first branch pipe and the vent 17 and preventing gas leakage between the connection point of the first branch pipe and the vent 17. The second branch pipe extends in a direction generally parallel to the wall panel, which allows the second branch pipe to be fitted to the wall surface, thereby reducing the overall space of the low-pressure preservation container 100 and improving the space utilization rate of the low-temperature preservation equipment.

[0044] like Figure 1 and Figure 2As shown, in some embodiments of this utility model, the pressure detection element 20 and the air extraction assembly 30 are distributed in the left-right direction, and the connecting pipe 40 is disposed between the pressure detection element 20 and the air extraction assembly 30. Compared with arranging the connecting pipe 40 on the side of the pressure detection element 20 away from the air extraction assembly 30, and arranging the connecting pipe 40 on the side of the air extraction assembly 30 away from the pressure detection element 20, the present utility model embodiment of placing the connecting pipe 40 between the pressure detection element 20 and the air extraction assembly 30 can reduce the pipe length, and the pipe does not need to cross the pressure detection element 20 and the air extraction assembly 30 to achieve the connection, thereby improving assembly efficiency and the structural stability of the low-pressure preservation container 100.

[0045] In addition, the second and third interfaces are distributed in the left and right directions, and the second pipe 60 and the third pipe 70 extend in the left and right directions to facilitate the connection of the connecting pipe 40, the pressure detection element 20 and the air extraction assembly 30 through the pipes, reduce the degree of pipe bends, reduce fluid resistance, facilitate assembly and improve assembly efficiency.

[0046] like Figures 1 to 3 As shown, in some embodiments of this utility model, the storage cavity 18 is provided with an opening at the front, and the low-pressure food preservation container 100 also includes a drawer assembly 80. The drawer assembly 80 includes a drawer body 81 and a drawer panel 82. The drawer panel 82 is connected to the front end of the drawer body 81 and is configured to open and close the opening. When the drawer panel 82 is closed, the drawer body 81 is located in the storage cavity 18. This configuration makes it easier for users to open and close the storage cavity 18 and improves convenience.

[0047] When the storage cavity 18 is opened, the user can drive the drawer body 81 out of the storage cavity 18 via the drawer panel 82, making it easy to take out and put in items from the drawer body 81; subsequently, the user can push the drawer body 81 back into the storage cavity 18 via the drawer panel 82, thereby closing the storage cavity 18. The drawer body 81 can be used to store items, and the drawer panel 82 allows the user to easily open and close the storage cavity 18.

[0048] like Figures 1 to 3 As shown, in some embodiments of this utility model, the pressure detection element 20 and the suction assembly 30 are located at the rear of the top wall of the barrel assembly 10. This arrangement allows the pressure detection element 20 and the suction assembly 30 to be positioned away from the front of the barrel assembly 10, thereby concealing them and preventing any impact on their normal operation. Furthermore, compared to placing them on the bottom wall of the barrel assembly 10, placing the pressure detection element 20 and the suction assembly 30 on the top wall of the barrel assembly 10 prevents them from being damaged by pressure from the barrel assembly 10.

[0049] Furthermore, the pressure detection element 20 and the air extraction assembly 30 are distributed in the left-right direction; in this way, the low-pressure preservation container 100 can be balanced in the left-right direction, thereby improving the operational stability of the low-pressure preservation container 100.

[0050] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the low-pressure preservation container 100 further includes a bracket 83 and a handle 84. The bracket 83 is rotatably connected to the drawer assembly 80 and has a locking position for locking the drawer assembly 80 in the container body and an unlocking position for releasing the lock on the drawer assembly 80. The handle 84 is connected to the bracket 83 and is configured to drive the handle 84 to rotate. In this way, the drawer assembly 80 can be locked and unlocked through the handle 84, improving convenience. Moreover, the bracket 83 can improve the sealing performance of the preservation container, thereby improving the preservation effect of the preservation container.

[0051] Specifically, when the storage cavity 18 needs to be opened, the user can hold the handle 84 to drive the bracket 83 from the locked position to the unlocked position, thereby unlocking the drawer assembly 80. At this time, the drawer assembly 80 can be driven by the handle 84 to open the storage cavity 18. When the storage cavity 18 needs to be closed, the user can drive the drawer assembly 80 to close the opening of the storage cavity 18 by holding the handle 84, and drive the bracket 83 from the unlocked position to the unlocked position, thereby locking the drawer assembly 80 in the container assembly 10. Therefore, the bracket 83 can improve the sealing performance of the food preservation container, thereby improving the preservation effect of the food preservation container. In addition, the handle 84 is easy for the user to hold, improving convenience.

[0052] like Figure 1 As shown, in some embodiments of this utility model, the handle 84 is designed as a long strip extending in the left and right direction. This design can increase the user's grip area and make it easier for the user to drive the handle 84.

[0053] Furthermore, brackets 83 are connected to the left and right ends of the handle 84. The bracket 83 on the left side of the handle 84 is rotatably connected to the left side of the drawer panel 82, and the bracket 83 on the right side of the handle 84 is rotatably connected to the right side of the drawer panel 82. In this way, the movement stability of the handle 84 can be improved. When the handle 84 is driven to move, the brackets 83 at both ends of the handle 84 can distribute the force on the handle 84, so that the handle 84 can run more stably.

[0054] like Figure 1 As shown, in some embodiments of this utility model, the bracket 83 is rotatably connected to the middle area of ​​the drawer panel 82 along the vertical direction, and the handle 84 is located at the upper or lower part of the front of the drawer panel 82; this arrangement can ensure the range of motion of the handle 84 and improve the efficiency of use.

[0055] To make it easier to understand, let's take the example of handle 84 being located on the front side of the lower part of the panel:

[0056] Understandably, if the bracket 83 is rotatably connected to the upper area of ​​the drawer panel 82 along the vertical direction, the range of motion of the bracket 83 would be too large when the user drives the bracket 83 to rotate via the handle 84, making it inconvenient for the user to drive the handle 84. If the bracket 83 is rotatably connected to the lower area of ​​the drawer panel 82 along the vertical direction, the range of motion of the bracket 83 would be too small when the user drives the bracket 83 to rotate via the handle 84, and the distance between the locking and unlocking positions of the bracket 83 would be too small, making it easy to misoperate and affecting the use of the food storage container. Therefore, the bracket 83 can be rotatably connected to the middle area of ​​the drawer panel 82 along the vertical direction to ensure the range of motion of the handle 84 and improve the efficiency of use.

[0057] It should be noted that the bracket 83 is rotatably connected to the middle area of ​​the drawer panel 82 along the vertical direction. This can be understood as the rotatable connection point between the bracket 83 and the drawer panel 82 being closer to the middle than the upper or lower part of the drawer panel 82.

[0058] like Figures 1 to 3 As shown, in some embodiments of this utility model, the barrel assembly 10 includes a shell 11 and a surrounding plate 12. The shell 11 has an opening at the front, a storage cavity 18 is disposed inside the shell 11, and the surrounding plate 12 is disposed outside the shell 11 and connected to the shell 11. The surrounding plate 12 surrounds an installation cavity 13 whose bottom is closed by the shell 11. The pressure detection element 20 and the air extraction assembly 30 are disposed in the installation cavity 13. In this way, the installation stability of the pressure detection element 20 and the air extraction assembly 30 can be improved, thereby improving the working stability of the low-pressure preservation container 100.

[0059] Specifically, the front of the housing 11 is open, which makes it easy for users to put in and take out the items to be preserved; and a surrounding plate 12 is connected to the outside of the housing 11, forming an installation cavity 13 between the surrounding plate 12 and the housing 11. The pressure detection element 20 and the air extraction assembly 30 can be placed in the installation cavity 13 to avoid interference from other structural components of the low-temperature preservation equipment, thereby improving the stability of the pressure detection element 20 and the air extraction assembly 30, and thus improving the working stability of the low-pressure preservation container 100.

[0060] like Figures 1 to 3As shown, in some embodiments of this utility model, the barrel assembly 10 further includes a plurality of reinforcing ribs 14. The plurality of reinforcing ribs 14 are connected to the shell 11 and cover the peripheral wall and bottom wall of the shell 11. The plurality of reinforcing ribs 14 are distributed in a crisscross pattern. It can be understood that when the low-pressure preservation container 100 is used for preservation, the pressure inside the low-pressure preservation container 100 is lower than the external pressure, which causes the barrel assembly 10 to be prone to inward deformation. Therefore, a plurality of reinforcing ribs 14 can be provided on the shell 11, and the plurality of reinforcing ribs 14 cover the peripheral wall and bottom wall of the shell 11, thereby improving the structural strength of the barrel assembly 10. The plurality of reinforcing ribs 14 are distributed in a crisscross pattern, which can withstand pressure in multiple directions and distribute the force evenly to the plurality of reinforcing ribs 14, thereby further improving the structural strength of the barrel assembly 10.

[0061] In addition, multiple reinforcing ribs 14 are connected to the surrounding plate 12, which can improve the structural strength of the wall of the mounting cavity 13, thereby enabling the pressure detection element 20 and the air extraction assembly 30 to be stably installed in the mounting cavity 13.

[0062] like Figures 1 to 3 As shown, in some embodiments of this utility model, the barrel assembly 10 further includes at least two first positioning ribs 15, which are connected to the shell 11 and the surrounding plate 12. It can be understood that the mounting cavity 13 can be formed by connecting the shell 11 and the surrounding plate 12. The first positioning ribs 15 connect the shell 11 and the surrounding plate 12 to further improve the cavity strength of the mounting cavity 13, thereby improving the operational stability of the low-pressure preservation container 100.

[0063] In addition, the first positioning rib 15 is provided with a first notch that matches the shape of the outer peripheral surface of the suction assembly 30. At least two first positioning ribs 15 are spaced apart in the left-right direction, and the suction assembly 30 is positioned at the first notch. In this way, the suction assembly 30 can be positioned at the first notch by means of interlocking, snap-fitting, etc. The positioning of the suction assembly 30 by the first notch can improve the installation strength of the suction assembly 30, thereby improving the working stability of the suction assembly 30. Furthermore, the first positioning rib 15 includes at least two spaced apart in the left-right direction, so that the suction assembly 30 can be respectively set on at least two first positioning ribs 15, thereby increasing the contact area between the suction assembly 30 and the first positioning rib 15, so as to improve the installation strength of the suction assembly 30. In addition, the first notch matches the shape of the suction assembly 30, which can also improve the installation stability of the suction assembly 30.

[0064] like Figure 1 and Figure 2As shown, in some embodiments of this utility model, the barrel assembly 10 further includes at least two second positioning ribs 16, which are connected to the shell 11 and the surrounding plate 12. It can be understood that the mounting cavity 13 is formed by the shell 11 and the surrounding plate 12 connected together, and the second positioning ribs 16 connect the shell 11 and the surrounding plate 12 to further improve the cavity strength of the mounting cavity 13, thereby improving the operational stability of the low-pressure preservation container 100.

[0065] In addition, the second positioning rib 16 is provided with a second notch, and at least two second positioning ribs 16 are distributed at intervals in the left and right direction. The pressure detection element 20 is positioned in the second notch. In this way, the pressure detection element 20 can be positioned in the second notch by means of fastener connection or other means. The positioning of the pressure detection element 20 by the second notch can improve the installation strength of the pressure detection element 20, thereby improving the working stability of the pressure detection element 20. Furthermore, the second positioning rib 16 includes at least two that are distributed at intervals in the left and right direction, so that the pressure detection element 20 can be respectively set in at least two second positioning ribs 16, thereby increasing the contact area between the pressure detection element 20 and the second positioning rib 16, so as to improve the installation strength of the pressure detection element 20.

[0066] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the pressure detection element 20 is a pressure switch. The pressure switch is suitable for harsh environments to ensure the normal operation of the low-pressure preservation container 100. Moreover, the pressure switch has a simple structure, does not require complex circuits, and has high reliability. The suction component 30 is configured to operate when the pressure value in the receiving cavity 18 is greater than the set threshold of the pressure switch. For example, when the low-pressure preservation container 100 is running, the pressure in the receiving cavity 18 is not greater than the set threshold. However, as the low-pressure preservation container 100 operates for a long time, gas leakage occurs, causing the pressure in the receiving cavity 18 to exceed the set threshold. At this time, the pressure switch is turned on, and the suction component 30 is controlled to suction the receiving cavity 18 until the pressure in the receiving cavity 18 is not greater than the set threshold, at which point the pressure switch is turned off.

[0067] like Figures 1 to 3 As shown, the low-temperature preservation equipment according to an embodiment of the present utility model includes a body, a refrigeration device, and the low-pressure preservation container 100 mentioned above.

[0068] The machine body is equipped with a refrigeration chamber, and a refrigeration device is located in the machine body for refrigerating the refrigeration chamber. A low-pressure preservation container 100 is located in the refrigeration chamber. By using the aforementioned low-pressure preservation container 100, the low-temperature preservation equipment can be maintained at a predetermined pressure value, thereby improving the low-temperature preservation equipment.

[0069] Specifically, the low-pressure preservation container 100 is placed in the refrigeration chamber and refrigerated in the refrigeration chamber by the refrigeration device, 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 realizing the low-temperature preservation function. Furthermore, the vacuum component 30 can create negative pressure in the storage cavity 18, thereby realizing the low-pressure preservation function.

[0070] When using the low-pressure food storage container 100, the user can hold and flip the handle 84 to drive the bracket 83 from the locked position to the unlocked position, unlocking the drawer panel 82. At this time, the user can drive the drawer panel 82 to open the storage cavity 18 through the handle 84. Subsequently, the user can drive the drawer panel 82 to close the storage cavity 18 through the handle 84, and drive the bracket 83 from the unlocked position to the locked position, at which time the drawer panel 82 is locked.

[0071] As the low-pressure preservation container 100 maintains low pressure for an extended period, gas leakage may occur, causing the pressure inside the storage cavity 18 to rise. When the pressure inside the storage cavity 18 exceeds a set threshold, a pressure switch is activated, controlling the air extraction component 30 to extract the gas from the storage cavity 18. The pressure switch is activated again when the pressure inside the storage cavity 18 is no greater than the set threshold, thus maintaining the pressure in the storage cavity 18 within a predetermined range and improving the preservation effect of the low-pressure preservation container 100.

[0072] Furthermore, the vent 17, pressure detection element 20, and suction assembly 30 of the storage cavity 18 are all connected to the connecting pipe 40. Pressure detection and suction of the storage cavity 18 can be achieved through the connecting pipe 40, eliminating the need for multiple vents 17, simplifying the structure of the low-pressure preservation container 100, and reducing costs. The vent 17, pressure detection element 20, and suction assembly 30 are connected to the connecting pipe 40 via a first pipe 50, a second pipe 60, and a third pipe 70, respectively. The pipes can be extended or shortened according to actual layout needs, improving the spatial arrangement of functional components. In addition, the first pipe 50 includes a first branch extending generally perpendicular to the wall panel and a second branch extending generally parallel to the wall panel. This facilitates the connection between the first pipe 50 and the vent 17 and allows the first pipe 50 to be positioned close to the wall panel, improving space utilization. In addition, the pressure detection element 20 and the air extraction assembly 30 are distributed in the left and right direction, and the connecting pipe 40 is arranged between the air extraction assembly 30, which facilitates the connection of the connecting pipe 40 to the pressure detection element 20 and the air extraction assembly 30 and avoids pipe entanglement.

[0073] Furthermore, the barrel assembly 10 includes a shell 11 and a surrounding plate 12. The shell 11 is connected with multiple reinforcing ribs 14 to improve the structural strength of the barrel assembly 10. The surrounding plate 12 is connected to the shell 11 and encloses a mounting cavity 13, in which the pressure detection element 20 and the suction assembly 30 can be installed to improve the installation stability of the pressure detection element 20 and the suction assembly 30. In addition, the mounting cavity 13 is provided with a first positioning rib 15 and a second positioning rib 16. The first positioning rib 15 has a first notch, which can be used to position the suction assembly 30. The second positioning rib 16 has a second notch, which can be used to position the pressure detection element 20 to further improve the installation stability of the pressure detection element 20 and the suction assembly 30.

[0074] like Figure 4 As shown, the low-pressure preservation method according to an embodiment of the present invention is used in the low-pressure preservation container in the above embodiment. The low-pressure preservation method includes:

[0075] Step S100: Determine the detection pressure value of the pressure detection element.

[0076] In step S200, if the detected pressure value is greater than the preset air pressure value, the air extraction component is controlled to extract air from the storage chamber.

[0077] Specifically, the pressure detection device can detect the pressure inside the storage cavity. When the pressure inside the storage cavity is greater than the preset air pressure value, the pressure detection device can transmit a signal to the air extraction component and control the air extraction component to extract the gas from the storage cavity. When the pressure detection device detects that the pressure inside the storage cavity is not greater than the preset air pressure value, it controls the air extraction component to stop operating. In this way, the storage cavity can be maintained in a low-pressure, low-oxygen environment, thereby improving the preservation effect of the low-pressure preservation container.

[0078] In some specific examples of this utility model, the low-pressure preservation container 100 includes a sealing and pressure-resistant system (i.e., the container body assembly 10) and an air extraction system (i.e., the air extraction assembly 30). The sealing and pressure-resistant system mainly consists of a sealed container (i.e., the shell 11), a drawer (i.e., the drawer assembly 80), a sealing strip, and a locking mechanism (i.e., the bracket 91). The air extraction system mainly consists of a vacuum pump, a pressure switch, a three-way connector (i.e., a connecting pipe 40), and an air pipe. By extracting some of the gas from the sealing and pressure-resistant system through the air extraction system, the sealing and pressure-resistant system is placed in a low-pressure, low-oxygen state, effectively inhibiting the respiration and transpiration of the food and improving the preservation quality. In the air extraction system, for example... Figures 1 to 3As shown, a bent pipe is connected to the air outlet (i.e., vent 17) of the sealed container. A connecting pipe 40 is connected to the other end of the bent pipe. One end of the connecting pipe 40 connects to the bent pipe, the other end connects to the vacuum pump, and the other end connects to a pressure switch. When the pressure inside the vacuum device rises to the set threshold of the pressure switch, the pressure switch sends an electrical signal to the control board. Upon receiving the electrical signal from the pressure switch, the vacuum pump starts pressurizing according to the set control logic, ensuring that the vacuum device maintains a consistently negative pressure state. Therefore, this invention ensures that the vacuum device is always in a set negative pressure state, with high reliability and is unaffected by the consistency of the vacuum device. Simultaneously, the pressure switch is integrated into the vacuum pump pipeline, avoiding the risk of leakage from newly opened vents in the vacuum device.

[0079] In the description of this utility model, 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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, characterized in that, include: A barrel assembly (10) having a storage cavity (18); Pressure detection element (20), the pressure detection element (20) is configured to detect the pressure inside the barrel assembly (10); An air extraction assembly (30) is connected to the barrel assembly (10) and is configured to operate according to the pressure detection element (20).

2. The low-pressure food preservation container according to claim 1, characterized in that, The low-pressure food preservation container also includes: A connecting pipe (40) has a first interface, a second interface and a third interface. The first interface is connected to the receiving cavity (18), the second interface is connected to the pressure detection element (20), and the third interface is connected to the air extraction assembly (30).

3. The low-pressure food preservation container according to claim 2, characterized in that, The wall panel of the barrel assembly (10) is provided with a vent (17), which penetrates the wall panel. A first pipe (50) is connected between the first interface and the vent (17), a second pipe (60) is connected between the second interface and the pressure detection element (20), and a third pipe (70) is connected between the third interface and the air extraction assembly (30).

4. The low-pressure food preservation container according to claim 3, characterized in that, The first pipeline (50) includes a first branch pipe and a second branch pipe. The first branch pipe is connected to the vent (17) and extends in a direction generally perpendicular to the wall panel. The second branch pipe is connected to the first branch pipe and extends in a direction generally parallel to the wall panel. The second branch pipe is connected to the first interface. And / or, the pressure detection element (20) and the air extraction assembly (30) are distributed in the left-right direction, the connecting pipe (40) is disposed between the pressure detection element (20) and the air extraction assembly (30), the second interface and the third interface are distributed in the left-right direction, and the second pipeline (60) and the third pipeline (70) extend in the left-right direction.

5. The low-pressure food preservation container according to any one of claims 1-4, characterized in that, The storage cavity (18) has an opening at the front, and the low-pressure food preservation container also includes: A drawer assembly (80) includes a drawer body (81) and a drawer panel (82). The drawer panel (82) is connected to the front end of the drawer body (81) and is configured to open and close the opening. When the drawer panel (82) is closed, the drawer body (81) is located in the storage cavity (18).

6. The low-pressure food preservation container according to claim 5, characterized in that, The pressure detection element (20) and the air extraction assembly (30) are located at the rear of the top wall of the barrel assembly (10); and / or, the pressure detection element (20) and the air extraction assembly (30) are distributed in the left-right direction.

7. The low-pressure food preservation container according to claim 5, characterized in that, The low-pressure food preservation container also includes: A bracket (83) is rotatably connected to the drawer assembly (80) and has a locking position for locking the drawer assembly (80) in the barrel and an unlocking position for releasing the drawer assembly (80); A handle (84) is connected to the bracket (83) and configured to drive the handle (84) to rotate.

8. The low-pressure food preservation container according to claim 7, characterized in that, The handle (84) is a long strip extending in the left and right direction. The left and right ends of the handle (84) are connected to the bracket (83). The bracket (83) on the left side of the handle (84) is rotatably connected to the left side of the drawer panel (82), and the bracket (83) on the right side of the handle (84) is rotatably connected to the right side of the drawer panel (82). And / or, the bracket (83) is rotatably connected to the middle area of ​​the drawer panel (82) in the vertical direction, and the handle (84) is located on the upper or lower part of the front of the drawer panel (82).

9. The low-pressure food preservation container according to claim 1, characterized in that, The barrel assembly (10) includes: A housing (11) with an opening at the front, and a receiving cavity (18) disposed inside the housing (11); A surrounding panel (12) is provided on the outside of the housing (11) and connected to the housing (11). The surrounding panel (12) surrounds an installation cavity (13) whose bottom is closed by the housing (11). The pressure detection element (20) and the air extraction assembly (30) are provided in the installation cavity (13).

10. The low-pressure food preservation container according to claim 9, characterized in that, The barrel assembly (10) also includes: Multiple reinforcing ribs (14) are connected to the shell (11) and cover the periphery and bottom wall of the shell (11). The multiple reinforcing ribs (14) are distributed in a crisscross pattern and are connected to the surrounding plate (12).

11. The low-pressure food preservation container according to claim 9, characterized in that, The barrel assembly (10) further includes at least two first positioning ribs (15), the first positioning ribs (15) are connected to the shell (11) and the enclosure (12), the first positioning ribs (15) are provided with a first notch adapted to the shape of the outer peripheral surface of the suction assembly (30), the at least two first positioning ribs (15) are distributed at intervals in the left and right direction, and the suction assembly (30) is positioned at the first notch; And / or, the barrel assembly (10) further includes at least two second positioning ribs (16), the second positioning ribs (16) being connected to the shell (11) and the enclosure (12), the second positioning ribs (16) having a second notch, the at least two second positioning ribs (16) being spaced apart in the left-right direction, and the pressure detection element (20) being positioned at the second notch.

12. The low-pressure food preservation container according to claim 1, characterized in that, The pressure detection element (20) is a pressure switch, and the air extraction assembly (30) is configured to operate when the pressure value in the receiving cavity (18) is greater than the set threshold of the pressure switch.

13. 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 according to any one of claims 1-12, wherein the low-pressure preservation container is disposed in the refrigeration chamber.

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