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

Abstract

The utility model discloses a negative-pressure fresh-keeping container and low-temperature fresh-keeping equipment. The negative-pressure fresh-keeping container comprises a barrel body assembly, a drawer assembly and a lock body assembly, the barrel body assembly is provided with a containing cavity with an opening in the front face, the upper portion and / or the lower portion of the front surface of the barrel body assembly are / is provided with a pre-deformation structure protruding forwards relative to the middle portion, and the drawer assembly movably penetrates through the containing cavity in the front-back direction and is provided with a closing position for closing the opening. The front portion of the drawer assembly is opposite to the front surface of the barrel assembly in the front-back direction at the closing position and is in sealing fit with the front surface of the barrel assembly, the lock assembly is provided with a locking position and an unlocking position, and the lock assembly is connected with and locks the middle portion of the front portion of the drawer assembly in the up-down direction and the middle portion of the barrel assembly in the up-down direction at the locking position. And the lock body assembly unlocks the drawer assembly and the barrel body assembly at the unlocking position. According to the negative-pressure fresh-keeping container, the pre-deformation structure is arranged, so that the sealing effect of the negative-pressure fresh-keeping container is improved, and the fresh-keeping effect of the negative-pressure fresh-keeping container is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh-keeping equipment, in particular to a negative pressure fresh-keeping container and low-temperature fresh-keeping equipment comprising the negative pressure fresh-keeping container. Background Art

[0002] Refrigerator vacuum preservation technology creates a sealed vacuum environment, isolating food from the outside air to achieve antibacterial, moisture-proof, and anti-oxidation effects. The core principle is to use high pressure to remove air from the container and food, creating a vacuum state that effectively inhibits the growth of aerobic bacteria and slows the oxidation process. In related technologies, panels are used to seal the storage cavity of the barrel of a negative pressure preservation container, but the sealing effect is poor, resulting in insufficient sealing performance and poor preservation. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] Therefore, one purpose of the present invention is to provide a negative pressure fresh-keeping container provided with a pre-deformation structure, which can improve the sealing effect of the negative pressure fresh-keeping container, thereby improving the fresh-keeping effect of the negative pressure fresh-keeping container.

[0005] Another object of the present invention is to provide a low-temperature fresh-keeping device, which includes the aforementioned negative pressure fresh-keeping container.

[0006] According to the negative pressure preservation container of the embodiment of the present invention, the negative pressure preservation container includes a barrel body assembly, a drawer assembly and a lock body assembly, the barrel body assembly has a storage cavity with a front opening, the upper and / or lower parts of the front surface of the barrel body assembly are provided with a pre-deformation structure protruding forward relative to the middle part, the drawer assembly is movably arranged in the storage cavity along the front and rear directions, and has a closed position for closing the opening, the front part of the drawer assembly is opposite to and sealed with the front surface of the barrel body assembly along the front and rear directions in the closed position, the lock body assembly has a locking position and an unlocking position, the lock body assembly connects and locks the middle part of the front of the drawer assembly along the up and down directions and the middle part of the barrel body assembly along the up and down directions in the locking position, and the lock body assembly releases the lock of the drawer assembly and the barrel body assembly in the unlocking position.

[0007] According to the negative pressure fresh-keeping container of the embodiment of the present invention, a pre-deformation structure is provided so that when the lock body assembly locks the drawer assembly in the barrel body assembly, the barrel body assembly and the drawer assembly are subjected to uniform force, thereby improving the sealing effect of the negative pressure fresh-keeping container, thereby improving the fresh-keeping effect of the negative pressure fresh-keeping container.

[0008] In addition, the negative pressure fresh-keeping container according to the above embodiment of the present invention may also have the following additional technical features:

[0009] Optionally, the lock body assembly is connected to and locks the left front side of the drawer assembly and the left side of the barrel assembly in the locking position; and / or, the lock body assembly is connected to and locks the right front side of the drawer assembly and the right side of the barrel assembly in the locking position.

[0010] Optionally, the pre-deformation structure is provided on the left side of the upper part of the front surface of the barrel body assembly; and / or, the pre-deformation structure is provided on the left side of the lower part of the front surface of the barrel body assembly; and / or, the pre-deformation structure is provided on the right side of the upper part of the front surface of the barrel body assembly; and / or, the pre-deformation structure is provided on the right side of the lower part of the front surface of the barrel body assembly.

[0011] Optionally, the front surface of the barrel assembly extends smoothly in a direction surrounding the opening.

[0012] Optionally, a height H of the pre-deformation structure protruding forward relative to a middle portion of the front surface of the barrel body assembly is greater than or equal to 0.1 mm and less than or equal to 5 mm.

[0013] Optionally, the drawer assembly includes a drawer body passing through the storage cavity and a drawer panel connected to the front end of the drawer body, the barrel body assembly is provided with a positioning portion, and the lock body assembly includes at least one lock, which is rotatably connected to the drawer panel and hooks the positioning portion in the locked position.

[0014] Optionally, the lock includes a main body and a claw connected to the main body, the first end of the main body is rotatably connected to the drawer panel, the claw is arranged behind the first end and separated from the first end in the front-to-back direction, and the claw hooks the positioning part in the locking position.

[0015] Optionally, the lock body assembly further includes a handle, which is connected to the lock buckle and is configured to drive the lock buckle to rotate.

[0016] Optionally, the lock body assembly includes a first lock buckle rotatably connected to the left side of the drawer panel and a second lock buckle rotatably connected to the right side of the drawer panel, and the handle is configured as a long strip extending in the left and right directions and is respectively connected to the first lock buckle and the second lock buckle.

[0017] Optionally, the positioning portion is configured as a cylindrical shape or a roller structure; and / or, the lock body assembly is configured as an integrally formed plastic part or metal part.

[0018] Optionally, the barrel body assembly is provided with an air extraction port for connecting to an air extraction device, and the air extraction port is connected to the storage cavity.

[0019] Optionally, the negative pressure fresh-keeping container further includes an air extraction component, and the air extraction component is connected to the storage cavity.

[0020] According to the low-temperature fresh-keeping device of the embodiment of the present invention, the low-temperature fresh-keeping device includes a body, a refrigeration device and the negative pressure fresh-keeping container mentioned above, the body is provided with a refrigeration compartment, the refrigeration device is arranged in the body for cooling the refrigeration compartment, and the negative pressure fresh-keeping container is arranged in the refrigeration compartment.

[0021] According to the low-temperature fresh-keeping device of the embodiment of the present invention, by applying the aforementioned negative pressure fresh-keeping container, the sealing performance of the low-temperature fresh-keeping device can be improved, thereby improving the working stability of the low-temperature fresh-keeping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of a negative pressure fresh-keeping container in some embodiments of the present invention (the lock assembly is in the locked position).

[0023] Figure 2 It is a schematic diagram of the barrel assembly in some embodiments of the present invention.

[0024] Figure 3 It is a top view of the barrel assembly in some embodiments of the present invention.

[0025] Figure 4 It is a cross-sectional view of a negative pressure fresh-keeping container in some embodiments of the present invention (the drawer body is not shown).

[0026] Figure 5 It is an exploded view of the barrel assembly and the drawer body in some embodiments of the present invention.

[0027] Figure 6 Exploded views of negative pressure fresh-keeping containers in other embodiments of the present invention (with the lock assembly in the locked position)

[0028] Reference numerals:

[0029] Negative pressure fresh-keeping container 100, barrel body assembly 10, opening 11, storage cavity 12, pre-deformation structure 13, positioning portion 14, positioning groove 141, exhaust port 15, drawer assembly 20, drawer body 21, drawer panel 22, lock body assembly 30, lock 31, main body 311, claw 312, handle 32, exhaust assembly 40. DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] The present invention provides a negative pressure fresh-keeping container 100 provided with a pre-deformation structure 13, which can improve the sealing effect of the negative pressure fresh-keeping container 100, thereby improving the fresh-keeping effect of the negative pressure fresh-keeping container 100. A low-temperature fresh-keeping device is also provided, which includes the negative pressure fresh-keeping container 100.

[0032] like Figures 1 to 6 As shown, according to the negative pressure fresh-keeping container 100 of an embodiment of the present invention, the negative pressure fresh-keeping container 100 includes a barrel assembly 10 , a drawer assembly 20 and a lock assembly 30 .

[0033] Among them, the barrel body assembly 10 has a storage cavity 12 with a front opening 11, and the upper and / or lower part of the front surface of the barrel body assembly 10 is provided with a pre-deformation structure 13 protruding forward relative to the middle part. The drawer assembly 20 is movably provided with the storage cavity 12 along the front and rear directions, and has a closed position for closing the opening 11. The front of the drawer assembly 20 is opposite to the front surface of the barrel body assembly 10 along the front and rear directions and sealed. The lock body assembly 30 has a locking position and an unlocking position. The lock body assembly 30 connects and locks the middle part of the front of the drawer assembly 20 along the up and down directions and the middle part of the barrel body assembly 10 along the up and down directions in the locking position. The lock body assembly 30 releases the lock of the drawer assembly 20 and the barrel body assembly 10 in the unlocking position; such an arrangement can improve the sealing effect of the negative pressure preservation container 100, thereby improving the preservation effect of the negative pressure preservation container 100.

[0034] Specifically, when closing the storage cavity 12, the user can drive the drawer assembly 20 to move relative to the barrel body assembly 10 in the front-to-back direction, thereby pushing the drawer assembly 20 into the storage cavity 12, and the front of the drawer assembly 20 is sealed with the front surface of the barrel body assembly 10 in the front-to-back direction. Then the user can switch the lock body assembly 30 from the unlocked position to the locked position to lock the drawer assembly 20 in the barrel body assembly 10. During this process, the pre-deformation structure 13 on the front surface of the barrel body assembly 10 can abut against the front of the drawer assembly 20 and deform the pre-deformation structure 13. At this time, the pre-deformation structure 13 has a force to restore its original shape and is applied to the front of the drawer assembly 20, so that the front surface of the barrel body assembly 10 is more tightly sealed with the front of the drawer assembly 20, thereby improving the sealing effect of the negative pressure preservation container 100.

[0035] Furthermore, the pre-deformation structure 13 is arranged on the upper and / or lower part of the front surface of the barrel body assembly 10, and the lock body assembly 30 locks the middle part of the front part of the drawer assembly 20 and the middle part of the barrel body assembly 10 when it is in the locked position. In this way, in the locked position, the pre-deformation structure 13 and the lock body assembly 30 can be located at different positions respectively, and the two avoid each other, so as to avoid the lock body assembly 30 being set at the sealing position corresponding to the pre-deformation structure 13, which causes poor sealing of other sealing parts of the barrel body assembly 10 and the drawer assembly 20, so that the upper, middle and lower parts of the barrel body assembly 10 and the drawer assembly 20 have good sealing properties, avoiding gas leakage and the like. In some specific examples, the pre-deformation structure 13 can be arranged at the upper and lower parts of the front surface of the barrel body assembly 10, so that the lock body assembly 30 can lock the drawer assembly 20 and the middle part of the barrel body assembly 10, and the upper and lower parts of the front surface of the barrel body assembly 10 can respectively abut the front part of the drawer assembly 20, so that the barrel body assembly 10 and the drawer assembly 20 are evenly stressed, thereby improving the sealing performance of the negative pressure preservation container 100.

[0036] In addition, since the pre-deformation structure 13 protrudes forward relative to the middle part of the front surface of the barrel body assembly 10, the thickness of the upper and / or lower part of the front surface of the barrel body assembly 10 is increased. In this way, when the storage cavity 12 of the negative pressure preservation container 100 is evacuated, the deformation resistance of the barrel body assembly 10 can be improved, thereby improving the working stability of the negative pressure preservation container 100.

[0037] Therefore, according to the negative pressure fresh-keeping container 100 of the embodiment of the present invention, by providing a pre-deformation structure 13, when the lock body assembly 30 locks the drawer assembly 20 in the barrel body assembly 10, the barrel body assembly 10 and the drawer assembly 20 are evenly stressed, so as to improve the sealing effect of the negative pressure fresh-keeping container 100, thereby improving the fresh-keeping effect of the negative pressure fresh-keeping container 100.

[0038] like Figure 1 As shown, in some embodiments of the present invention, the lock body assembly 30 is connected to and locks the left front side of the drawer assembly 20 and the left side of the barrel body assembly 10 in the locking position; such a setting has a simple structure, and the drawer assembly 20 is locked on the barrel body assembly 10 by the lock body assembly 30 arranged on the left side to improve the sealing effect of the negative pressure preservation container 100; and it can avoid each other with the pre-deformation structure 13 arranged on the upper and / or lower part of the front surface of the barrel body assembly 10, avoiding the lock body assembly 30 from being set at the pre-deformation structure 13, which causes poor sealing of other sealing parts between the drawer assembly 20 and the barrel body assembly 10.

[0039] like Figure 1As shown, in other embodiments of the present invention, the lock body assembly 30 is connected to and locks the front right side of the drawer assembly 20 and the right side of the barrel body assembly 10 in the locking position; such a setting has a simple structure, and the drawer assembly 20 is locked on the barrel body assembly 10 by the lock body assembly 30 arranged on the right side to improve the sealing effect of the negative pressure preservation container 100; and it can avoid each other with the pre-deformation structure 13 arranged on the upper and / or lower part of the front surface of the barrel body assembly 10, avoiding the lock body assembly 30 from being set at the pre-deformation structure 13, which causes poor sealing of other sealing parts of the drawer assembly 20 and the barrel body assembly 10.

[0040] like Figure 1 As shown, in some further embodiments of the present invention, the lock body assembly 30 includes two, one lock body assembly 30 is connected to and locks the left front side of the drawer assembly 20 and the left side of the barrel body assembly 10 in the locking position, and the other lock body assembly 30 is connected to and locks the right front side of the drawer assembly 20 and the right side of the barrel body assembly 10 in the locking position; it can be understood that the two lock body assemblies 30 are distributed along the left and right directions, and the two lock body assemblies 30 respectively lock the left and right sides of the front of the drawer assembly 20 on the barrel body assembly 10, which can improve the locking stability and make the left and right sides of the drawer assembly 20 and the barrel body assembly 10 evenly stressed, thereby improving the sealing performance.

[0041] like Figure 2 、 Figure 3 and Figure 5 As shown, in some embodiments of the present invention, a pre-deformation structure 13 is provided on the left side of the upper part of the front surface of the barrel body assembly 10; and / or, a pre-deformation structure 13 is provided on the left side of the lower part of the front surface of the barrel body assembly 10; and / or, a pre-deformation structure 13 is provided on the right side of the upper part of the front surface of the barrel body assembly 10; and / or, a pre-deformation structure 13 is provided on the right side of the lower part of the front surface of the barrel body assembly 10; in this way, the sealing effect of the negative pressure fresh-keeping container 100 can be improved, thereby improving the fresh-keeping effect of the negative pressure fresh-keeping container 100.

[0042] Optionally, the upper left side, the upper right side, the lower left side, and the lower right side of the front surface of the barrel assembly 10 are respectively provided with pre-deformation structures 13. Thus, compared with the case where the pre-deformation structures 13 are provided on the entire upper and lower portions of the front surface of the barrel assembly 10, this embodiment can improve the sealing effect of the negative pressure fresh-keeping container 100 and reduce the volume of the pre-deformation structures 13, thereby reducing the cost of the negative pressure fresh-keeping container 100. Of course, according to actual circumstances, at least one of the upper left side, the upper right side, the lower left side, and the lower right side of the front surface of the barrel assembly 10 can be provided with a pre-deformation structure 13 to achieve the purpose of improving the sealing effect of the negative pressure fresh-keeping container 100 and reducing the cost of the negative pressure fresh-keeping container 100.

[0043] like Figures 2 to 5 As shown, in some embodiments of the present invention, the front surface of the barrel body assembly 10 extends smoothly in a direction around the opening 11; in this way, when the front part of the drawer assembly 20 is sealed with the front surface of the barrel body assembly 10, the wear between the drawer assembly 20 and the barrel body assembly 10 can be reduced, thereby extending the service life of the negative pressure preservation container 100; and the smooth front surface of the barrel body assembly 10 helps to improve the sealing performance of the drawer assembly 20 and the barrel body assembly 10, and makes the force on the front side of the barrel body assembly 10 evenly distributed in various parts of the front surface of the barrel body assembly 10, thereby improving the preservation effect of the negative pressure preservation container 100.

[0044] In some embodiments of the present invention, the height H of the pre-deformation structure 13 protruding forward relative to the middle part of the front surface of the barrel body assembly 10 is greater than or equal to 0.1 mm and less than or equal to 5 mm; in this way, the front surface of the barrel body assembly 10 can be tightly matched with the front part of the drawer assembly 20 to improve the sealing effect of the negative pressure fresh-keeping container 100, thereby improving the fresh-keeping effect of the negative pressure fresh-keeping container 100.

[0045] It can be understood that if the height H of the pre-deformation structure 13 protruding forward relative to the middle part of the front surface of the barrel body assembly 10 is less than 0.1 mm, then when the front surface of the barrel body assembly 10 is sealed with the front part of the drawer assembly 20, the deformation amount of the pre-deformation structure 13 is small, and the abutment force generated is small, which cannot make the front surface of the barrel body assembly 10 and the front of the drawer assembly 20 tightly fit together, and the sealing effect cannot meet the requirements; if the height H of the pre-deformation structure 13 protruding forward relative to the middle part of the front surface of the barrel body assembly 10 is greater than 5 mm, then when the front surface of the barrel body assembly 10 is sealed with the front part of the drawer assembly 20, the deformation amount of the pre-deformation structure 13 is small, and the abutment force generated is small, which cannot make the front surface of the barrel body assembly 10 and the front of the drawer assembly 20 tightly fit together, and the sealing effect cannot meet the requirements; When the front surface of the component 10 is sealed with the front part of the drawer assembly 20, the deformation of the pre-deformation structure 13 is large, and the abutment force generated is large, which can easily cause a gap to be generated between the barrel body assembly 10 and other sealing parts of the drawer assembly 20, resulting in poor sealing; therefore, the height H of the pre-deformation structure 13 protruding forward relative to the middle part of the front surface of the barrel body assembly 10 can be greater than or equal to 0.1 mm and less than or equal to 5 mm, so as to improve the sealing effect of the negative pressure fresh-keeping container 100; wherein, the height H can be 0.1 mm, 0.5 mm, 1 mm, 3 mm, 5 mm, etc.

[0046] like Figure 1 、 Figure 4 and Figure 5 As shown, in some embodiments of the present invention, the drawer assembly 20 includes a drawer body 21 penetrating the storage cavity 12 and a drawer panel 22 connected to the front end of the drawer body 21 .

[0047] Among them, the barrel body assembly 10 is provided with a positioning portion 14, and the lock body assembly 30 includes at least one lock buckle 31, which is rotated to connect the drawer panel 22 and hook the positioning portion 14 in the locked position; specifically, the lock buckle 31 has a locked position and an unlocked position, and rotates relative to the drawer panel 22 to switch between the locked position and the unlocked position; when closing the storage cavity 12, the user can drive the drawer panel 22 to move in the front and rear direction relative to the barrel body assembly 10, so that the drawer panel 22 closes the storage cavity 12 and opens the drawer The main body 21 is pushed into the storage cavity 12, and then the lock 31 is switched from the unlocked position to the locked position, causing the pre-deformed structure 13 to deform and tightly abut against the drawer panel 22, thereby improving the sealing performance of the negative pressure fresh-keeping container 100, thereby improving the fresh-keeping effect of the negative pressure fresh-keeping container 100; in short, the locking of the lock 31 and the positioning portion 14 can improve the sealing performance of the negative pressure fresh-keeping container 100, and the combination with the pre-deformed structure 13 can further improve the sealing performance of the negative pressure fresh-keeping container 100. When opening the storage cavity 12, the user switches the lock 31 from the locked position to the unlocked position and drives the drawer panel 22 to move in the front-to-back direction relative to the barrel assembly 10, so that the drawer panel 22 opens the storage cavity 12 and the drawer main body 21 is pulled out of the storage cavity 12.

[0048] More specifically, there are multiple locking methods for the positioning portion 14 and the lock buckle 31 in the embodiment of the present invention. For ease of understanding, the present invention provides the following embodiments for illustration:

[0049] Implementation Method 1

[0050] like Figure 6 As shown, the positioning portion 14 is provided with a positioning groove 141, and the lock 31 has a rotating portion and a locking portion. The rotating portion is rotatably connected to the drawer panel 22, and the locking portion is engaged with the positioning groove 141; the positioning groove 141 is opposite to the locking portion in the rotation direction of the lock 31, so that when switching to the locked position, the rotating portion of the lock 31 can rotate around the locking portion and be embedded in the positioning groove 141, thereby locking the drawer assembly 20 in the barrel body assembly 10, thereby improving the sealing performance of the negative pressure preservation container 100.

[0051] Furthermore, the positioning groove 141 is arranged behind the rotating part of the lock 31, so that when in the locked position, the locking part and the rotating part are distributed front and back, and limit the drawer assembly 20 from moving in the front and back direction relative to the barrel body assembly 10, so as to improve the locking effect of the lock body assembly 30 on the drawer assembly 20, thereby improving the sealing performance of the negative pressure preservation container 100.

[0052] Implementation Method 2

[0053] like Figure 1As shown, the lock 31 includes a main body 311 and a claw 312 connected to the main body 311. The main body 311 has a first end and a second end that oppose each other. The first end of the main body 311 is rotatably connected to the drawer panel 22. The claw 312 is located behind the first end and spaced apart from the first end in the front-to-back direction. In the locked position, the claw 312 hooks onto the positioning portion 14. Thus, when switched to the locked position, the claw 312 can rotate around the first end of the main body 311 and hook onto the positioning portion 14, thereby locking the drawer assembly 20 to the barrel assembly 10 and improving the sealing performance of the negative pressure fresh-keeping container 100. In addition, the claw 312 is located behind the first end, restricting the front-to-back movement of the drawer assembly 20 relative to the barrel assembly 10 in the locked position, thereby improving the locking effect of the lock assembly 30. Furthermore, the claw 312 is spaced apart from the first end in the front-to-back direction, which increases the range of motion of the claw 312, thereby improving the locking effect of the lock assembly 30.

[0054] Furthermore, the lock assembly 30 also includes a handle 32, which is connected to the lock catch 31 and is configured to drive the lock catch 31 to rotate. In this way, the user can drive the lock catch 31 to switch between the locked position and the unlocked position by grasping the handle 32, thereby improving convenience. In some examples, the handle 32 is connected to the second end of the main body 311, and the handle 32 rotates around the first end of the main body 311 along with the second end of the main body 311 to switch between the locked position and the unlocked position.

[0055] like Figure 1 As shown, in some embodiments of the present invention, the lock body assembly 30 includes a first lock buckle 31 rotatably connected to the left side of the drawer panel 22 and a second lock buckle 31 rotatably connected to the right side of the drawer panel 22, and the handle 32 is configured to be a long strip extending in the left and right directions, and is respectively connected to the first lock buckle 31 and the second lock buckle 31; in this way, the locking stability of the lock body assembly 30 can be improved, thereby improving the sealing effect of the negative pressure preservation container 100.

[0056] In detail, the handle 32 is configured to be a long strip extending in the left-right direction, so that the user's gripping area can be increased, making it easier for the user to drive the handle 32 to rotate, and the structure of the handle 32 can be increased, thereby improving the structural strength of the handle 32; further, the handle 32 is connected to the first lock buckle 31 and the second lock buckle 31. When the handle 32 is driven to rotate, the first lock buckle 31 and the second lock buckle 31 can disperse the force applied to the handle 32, so that the handle 32 can operate more stably.

[0057] like Figure 1As shown, in some embodiments of the present invention, the positioning portion 14 is configured as a cylindrical shape or a roller structure; such a configuration can facilitate the claw 312 to hook the positioning portion 14 and release the positioning portion 14; it can be understood that the positioning portion 14 is configured as a cylindrical shape, and the claw 312 can hook the positioning portion 14 along the outer peripheral surface of the positioning portion 14, or release the positioning portion 14, thereby improving the locking efficiency and reducing structural wear; in addition, the positioning portion 14 is configured as a roller structure, and the claw 312 can roll relative to the positioning portion 14, thereby facilitating the claw 312 to hook the positioning portion 14 or release the positioning portion 14, thereby improving the locking efficiency and reducing structural wear.

[0058] In some embodiments of the present invention, the lock body assembly 30 is configured as an integrally formed plastic or metal member, which can improve the structural strength of the lock body assembly 30 and thereby improve the locking stability of the lock body assembly 30 on the drawer assembly 20 .

[0059] like Figure 4 As shown, in some embodiments of the present invention, the barrel body assembly 10 is provided with an exhaust port 15 for connecting to an exhaust device, and the exhaust port 15 is connected to the storage cavity 12. The exhaust port 15 can be connected to an external exhaust device. The exhaust device extracts the gas in the storage cavity 12 to form a low-pressure environment in the storage cavity 12. At this time, the bacteria and other organisms in the storage cavity 12 are less active in the low-pressure environment, thereby preserving the items in the storage cavity 12; optionally, a vacuum environment can be created in the storage cavity 12 through the exhaust port 15 to further improve the preservation effect of the negative pressure preservation container 100.

[0060] like Figure 4 As shown, in some embodiments of the present invention, the negative pressure fresh-keeping container 100 further includes an exhaust component 40, which is connected to the storage cavity 12. The exhaust component 40 can extract the gas in the storage cavity 12 to form a low-pressure environment in the storage cavity 12. At this time, the bacteria and other organisms in the storage cavity 12 are less active in the low-pressure environment, thereby preserving the items in the storage cavity 12.

[0061] like Figures 1 to 6 As shown, according to the low-temperature fresh-keeping device of an embodiment of the present invention, the low-temperature fresh-keeping device includes a body, a refrigeration device and the negative pressure fresh-keeping container 100 mentioned above.

[0062] Among them, the body is provided with a refrigeration compartment, the refrigeration device is arranged in the body, and is used to cool the refrigeration compartment. The negative pressure preservation container 100 is arranged in the refrigeration compartment. By applying the aforementioned negative pressure preservation container 100, the sealing performance of the low-temperature preservation equipment can be improved, thereby improving the working stability of the low-temperature preservation equipment.

[0063] Specifically, the negative pressure fresh-keeping container 100 is placed in a refrigeration room and cooled by a refrigeration device in the refrigeration room, so that the negative pressure fresh-keeping container 100 is in a low-temperature environment. In a low-temperature environment, biological activities such as bacteria are reduced, thereby achieving a low-temperature preservation function.

[0064] When closing the storage cavity 12, the user can use the handle 32 to drive the drawer panel 22 to move in the front-to-back direction relative to the barrel body assembly 10 to close the storage cavity 12 and push the drawer body 21 into the storage cavity 12. Then the user can use the handle 32 to drive the claw 312 to rotate around the first end of the main body 311 to hook the positioning portion 14, and lock the drawer assembly 20 in the barrel body assembly 10. During this process, the upper and / or lower parts of the front surface of the barrel body assembly 10 are provided with a pre-deformation structure 13. The pre-deformation structure 13 is deformed by the pressure of the drawer assembly 20 and generates a restoring force to restore its original shape. The restoring force can be applied to the front of the drawer assembly 20, so that the barrel body assembly 10 and the drawer assembly 20 are more tightly sealed to improve the sealing performance of the negative pressure preservation container 100, thereby improving the preservation effect of the negative pressure preservation container 100.

[0065] In addition, when in the locked position, the lock body assembly 30 locks the middle part of the front of the drawer assembly 20 and the middle part of the barrel body assembly 10. At this time, the pre-deformation structure 13 can be set at at least one of the upper left part, upper right part, lower left part and lower right part of the front surface of the barrel body assembly 10 to avoid each other with the lock body assembly 30, avoiding setting the lock body assembly 30 at the pre-deformation structure 13, which will cause poor sealing of other sealing parts between the drawer assembly 20 and the barrel body assembly 10.

[0066] Furthermore, the front surface of the barrel assembly 10 extends smoothly in a direction surrounding the opening 11, thereby reducing wear between the drawer assembly 20 and the barrel assembly 10 and improving the sealing performance of the negative pressure fresh-keeping container 100. In addition, the height H of the pre-deformation structure 13 protruding forward relative to the middle portion of the front surface of the barrel assembly 10 is greater than or equal to 0.1 mm and less than or equal to 5 mm, thereby improving the sealing performance of the negative pressure fresh-keeping container 100 while preventing poor sealing at other locations between the drawer assembly 20 and the barrel assembly 10.

[0067] In some specific examples of the present invention, the vacuum module (i.e., the negative pressure fresh-keeping container 100) includes a vacuum barrel body (i.e., the barrel body assembly 10) and a vacuum drawer assembly 20 (i.e., the drawer assembly 20). The vacuum barrel body is an integrated barrel structure or a barrel-shaped structure with an opening 11 on one side composed of two parts that are glued or ultrasonically welded together to improve the deformation resistance; the vacuum module is provided with a drawer locking handle 32 structure (i.e., the lock body assembly 30), and the claw 312 of the handle 32 structure is locked with the structure provided in the middle part of the height direction of the vacuum barrel body; in addition, the negative pressure fresh-keeping container 100 in the example of the present invention is designed with a pre-deformation structure during injection molding, and the pre-deformation is a deformation in the direction of the drawer assembly 20 (i.e., along the axial direction of the opening 11) at the four corner positions on one side of the barrel body opening 11. When the drawer assembly 20 handle 32 assembly is tightened, the force can be more uniform and the sealing can be better.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0069] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0070] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0071] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature has a higher horizontal height H than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a lower horizontal height H than the second feature.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0073] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A negative pressure fresh-keeping container, characterized in that: include: A barrel assembly (10), the barrel assembly (10) having a receiving cavity (12) with a front opening (11), and a pre-deformation structure (13) protruding forward relative to a middle portion is provided on the upper and / or lower portion of the front surface of the barrel assembly (10); a drawer assembly (20), the drawer assembly (20) being movably disposed in the storage cavity (12) along the front-to-back direction and having a closed position for closing the opening (11), wherein the front portion of the drawer assembly (20) is opposite to and sealed against the front surface of the barrel assembly (10) along the front-to-back direction at the closed position; A lock body assembly (30) having a locking position and an unlocking position. In the locking position, the lock body assembly (30) connects and locks the middle portion of the front of the drawer assembly (20) in the vertical direction and the middle portion of the barrel assembly (10) in the vertical direction. In the unlocking position, the lock body assembly (30) releases the lock on the drawer assembly (20) and the barrel assembly (10).

2. The negative pressure fresh-keeping container according to claim 1, characterized in that: The lock body assembly (30) is connected to and locks the left front side of the drawer assembly (20) and the left side of the barrel assembly (10) in the locking position; and / or, the lock body assembly (30) is connected to and locks the right front side of the drawer assembly (20) and the right side of the barrel assembly (10) in the locking position.

3. The negative pressure fresh-keeping container according to claim 1 or 2, characterized in that: The pre-deformation structure (13) is provided on the left side of the upper part of the front surface of the barrel body assembly (10); and / or, the pre-deformation structure (13) is provided on the left side of the lower part of the front surface of the barrel body assembly (10); and / or, the pre-deformation structure (13) is provided on the right side of the upper part of the front surface of the barrel body assembly (10); and / or, the pre-deformation structure (13) is provided on the right side of the lower part of the front surface of the barrel body assembly (10).

4. The negative pressure fresh-keeping container according to claim 1 or 2, characterized in that: The front surface of the barrel assembly (10) extends smoothly in a direction surrounding the opening (11); And / or, the height H of the pre-deformation structure (13) protruding forward relative to the middle portion of the front surface of the barrel assembly (10) is greater than or equal to 0.1 mm and less than or equal to 5 mm.

5. The negative pressure fresh-keeping container according to claim 1 or 2, characterized in that: The drawer assembly (20) includes a drawer body (21) penetrating the storage cavity (12) and a drawer panel (22) connected to the front end of the drawer body (21); the barrel assembly (10) is provided with a positioning portion (14); the lock assembly (30) includes at least one lock (31); the lock (31) is rotatably connected to the drawer panel (22) and hooks the positioning portion (14) in the locked position.

6. The negative pressure fresh-keeping container according to claim 5, characterized in that: The lock (31) includes a main body (311) and a claw (312) connected to the main body (311); a first end of the main body (311) is rotatably connected to the drawer panel (22); the claw (312) is arranged behind the first end and is separated from the first end in the front-to-back direction; the claw (312) hooks the positioning portion (14) in the locking position.

7. The negative pressure fresh-keeping container according to claim 6, characterized in that: The lock body assembly (30) further comprises: A handle (32) is connected to the lock buckle (31) and is configured to drive the lock buckle (31) to rotate.

8. The negative pressure fresh-keeping container according to claim 7, characterized in that: The lock body assembly (30) comprises a first lock catch (31) rotatably connected to the left side of the drawer panel (22) and a second lock catch (31) rotatably connected to the right side of the drawer panel (22); the handle (32) is configured as a long strip extending in the left-right direction and is connected to the first lock catch (31) and the second lock catch (31) respectively.

9. The negative pressure fresh-keeping container according to claim 5, characterized in that: The positioning portion (14) is configured as a cylindrical shape or a roller structure; and / or the lock body assembly (30) is configured as an integrally formed plastic part or metal part.

10. The negative pressure fresh-keeping container according to claim 1, characterized in that: The barrel assembly (10) is provided with an air extraction port (15) for connecting to an air extraction device, and the air extraction port (15) is connected to the storage cavity (12); And / or, the negative pressure fresh-keeping container further comprises an air extraction component (40), and the air extraction component (40) is connected to the storage cavity (12).

11. A low-temperature fresh-keeping device, characterized in that: include: A machine body, wherein the machine body is provided with a refrigeration compartment; A refrigeration device, which is provided in the machine body and is used for cooling the refrigeration compartment; The negative pressure fresh-keeping container according to any one of claims 1 to 10, wherein the negative pressure fresh-keeping container is arranged in the refrigeration compartment.

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