Fresh-keeping container

Abstract

The utility model provides a fresh-keeping container. The fresh-keeping container comprises a container shell; at least one part of the inner container is arranged in the container shell in a sleeved mode, an annular first supporting part is arranged at an opening of the inner container, the size of the portion, protruding out of the periphery of the inner container, of the first supporting part ranges from 1 mm to 8 mm, and at least one part of the first supporting part is in lap joint with the top end of the container shell; the container cover is detachably connected to the container shell, the container cover is provided with a sealing ring, and the sealing ring is in sealing fit with the upper surface of the first supporting part. The effective volume of the fresh-keeping container can be increased, and the use experience of the fresh-keeping container is improved.

Description

Technical Field

[0001] This application relates to the field of everyday consumer goods technology, and more particularly to a food preservation container. Background Technology

[0002] Food storage containers (such as food storage boxes or pots) allow for the categorization and storage of food when carrying or storing it outside, thus preserving its freshness and preventing cross-contamination. Currently, most food storage containers on the market are made of glass or plastic, with glass containers being widely popular due to their eco-friendly and harmless properties. However, to prevent breakage, glass food storage containers are generally quite thick, resulting in a smaller effective volume and impacting the user experience. Utility Model Content

[0003] This application provides a food preservation container to increase the effective volume of the food preservation container and improve the user experience of the food preservation container.

[0004] This application provides a food preservation container, which includes:

[0005] Container shell;

[0006] The inner liner is at least partially fitted inside the container shell. The opening of the inner liner is provided with an annular first support portion. The first support portion protrudes from the outer periphery of the inner liner by 1mm to 8mm. At least a portion of the first support portion overlaps the top of the container shell.

[0007] The container lid is detachably connected to the container shell. The container lid is provided with a sealing ring, which is sealed to the upper surface of the first support.

[0008] The food preservation container provided in this application includes a container shell, an inner liner, and a container lid. At least a portion of the inner liner is fitted inside the container shell. The opening of the inner liner has an annular first support portion, which protrudes 1mm to 8mm from the outer circumference of the inner liner. At least a portion of the first support portion overlaps the top of the container shell. The container lid is detachably connected to the container shell and has a sealing ring that seals with the upper surface of the first support portion. On one hand, the container lid and the inner liner form a space for containing food. The inner liner is in contact with the food, while the container shell is separated from it. Therefore, only the inner liner needs to be made of healthy and environmentally friendly materials such as glass. The container shell can be made of lightweight and durable materials such as plastic, thereby reducing the overall weight of the food preservation container and achieving heat insulation and anti-scalding effects. On the other hand, the container shell provides support and protection for the inner liner, making it less prone to breakage or damage. Therefore, the thickness of the inner liner can be reduced as needed. In addition, the first support protrudes from the outer periphery of the inner liner by 1mm to 8mm, which ensures that the first support can be stably and reliably clamped between the container shell and the sealing ring, and reduces the risk of damage to the first support. It also ensures that the first support can withstand the axial compressive force between the container lid and the container shell, while the main structure of the inner liner does not bear the axial compressive force. This reduces the structural strength requirements of the inner liner, which in turn allows for a further reduction in the thickness of the inner liner, increases the effective volume of the food preservation container, and improves the user experience of the food preservation container.

[0009] Optionally, the top of the container shell includes an annular first plane, and the lower surface of the first support includes an annular second plane, with the second plane abutting against the first plane. This ensures continuous planar contact between the first support and the top of the container shell, providing stable and reliable support for the inner liner, while also guaranteeing that only vertical interaction forces occur between the top of the container shell and the first support, preventing horizontal interaction forces and thus preventing deformation such as tilting or warping of the container shell.

[0010] Optionally, the upper surface of the first support includes an annular third plane, at least a portion of which is located directly above the first plane, and the sealing ring is in a sealing fit with the third plane. This increases the sealing area, effectively preventing water leakage, and also ensures that at least a portion of the first support is sandwiched between the first plane and the sealing ring, preventing significant misalignment of the stress points on the upper and lower sides of the first support, thus preventing the first support from bearing excessive torque.

[0011] Optionally, the distance between the third plane and the second plane is 1.8mm to 2.8mm, which can not only ensure that the inner liner is stably and reliably supported on the container shell, but also reasonably control the overall weight of the preservation container.

[0012] Optionally, the lower surface of the first support includes an annular guide surface, which is connected to the side of the second plane near the center of the inner liner; the guide surface gradually slopes downward along the direction near the center of the inner liner. When the inner liner is inserted into the container shell from top to bottom, the guide surface contacts and abuts against the container shell, which can adjust the position of the inner liner inside the container shell, so that the center of the inner liner is close to the center of the container shell, reducing the offset of the inner liner inside the container shell 1, thereby allowing the inner liner to be stably and reliably placed into the container shell.

[0013] Optionally, the first support portion protrudes 2mm to 5mm from the outer periphery of the inner liner. This allows the first support portion to overlap at the top of the container shell, close to the middle of the container shell wall thickness, thus providing more stable and reliable support from the container shell to the first support portion, and also allows the first support portion to fully exert its supporting function.

[0014] Optionally, the inner liner is a transparent glass liner. A transparent inner liner allows users to easily view the condition of the food inside, improving the convenience of using the food preservation container. The glass liner is microwave-safe, relatively lightweight, and easy to carry. Furthermore, the smooth glass surface prevents dirt and odor residue from accumulating during use, making cleaning easier and further enhancing the convenience of using the food preservation container.

[0015] Optionally, the inner bottom surface of the container shell is the first surface, and the outer bottom surface of the inner liner is the second surface, with the second surface spaced apart from the first surface. When the bottom of the container shell is subjected to forces such as compression or impact, these forces are difficult to transmit to the inner liner, thereby effectively preventing damage such as rupture of the inner liner.

[0016] Optionally, the inner wall of the container shell is a first wall surface, and the outer wall of the inner liner is a second wall surface. An annular gap is formed between the second wall surface and the first wall surface. When the side wall of the container shell is subjected to forces such as compression or impact, the force is difficult to be transmitted to the inner liner, thereby effectively preventing damage such as rupture of the inner liner. Along the direction from bottom to top, the width of the annular gap gradually decreases, which not only makes the installation and removal of the inner liner smoother, but also reduces the movement or shaking of the inner liner in the container shell, improving the stability and reliability of the inner liner placed in the container shell.

[0017] Optionally, the container lid is provided with a vent hole, and the container lid also includes a vent valve. The vent valve is inserted into the vent hole and can slide along the axial direction of the vent hole to open or close the vent hole, thereby balancing the internal and external air pressure of the preservation container as needed, making the operation of closing and opening the container lid more effortless.

[0018] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0019] Figure 1 A three-dimensional structural diagram of the food preservation container provided in the embodiments of this application;

[0020] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0021] Figure 3 for Figure 1 A three-dimensional structural diagram of another state of the food preservation container shown.

[0022] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure;

[0023] Figure 5 for Figure 2 A magnified view of a section at point A in the middle;

[0024] Figure 6 for Figure 5 A schematic diagram of the partial inner liner structure is shown.

[0025] Figure 7 for Figure 2 A magnified view of a section at point B in the middle.

[0026] Figure label:

[0027] 1-Container shell;

[0028] 10 - First plane;

[0029] 11-First surface;

[0030] 12 - First wall surface;

[0031] 13-Second support section;

[0032] 2-Inner liner;

[0033] 21-First support section;

[0034] 210 - Second plane;

[0035] 211 - Third plane;

[0036] 212-Guide surface;

[0037] 22-Second surface;

[0038] 23 - Second wall surface;

[0039] 3-Container lid;

[0040] 3a - Top cover;

[0041] 3b - Side panel;

[0042] 31 - Sealing ring;

[0043] 311 - Annular protrusion;

[0044] 32-Handle;

[0045] 33 - Exhaust port;

[0046] 34 - Exhaust valve;

[0047] 341 - Sealing section;

[0048] 342 - Exhaust section;

[0049] 343 - Limiting card protrusion;

[0050] 344 - Grip section;

[0051] 345 - Limiting part.

[0052] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0054] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] In the description of this specification, it should be understood that the directional terms such as "upper" and "lower" used in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0056] like Figures 1-7 As shown in the figure, this application provides a food preservation container, which includes a container shell 1, an inner liner 2, and a container lid 3. Both the container shell 1 and the inner liner 2 are cavity-like structures with openings at the top. At least a portion of the inner liner 2 is fitted inside the container shell 1. The container lid 3 is detachably connected to the top of the container shell 1, allowing the inner liner 2 to be accommodated within the space enclosed by the container shell 1 and the container lid 3. Furthermore, the container lid 3 and the inner liner 2 are sealed together. On one hand, the container lid 3 and the inner liner 2 enclose a space for food, with the inner liner 2 in contact with the food, while the container shell 1 is separated from the food. Therefore, only the inner liner 2 needs to be made of healthy and environmentally friendly materials such as ceramic or glass, while the container shell 1 can be made of lightweight and durable materials such as plastic, thereby reducing the overall weight of the food preservation container and achieving heat insulation and anti-scalding effects. On the other hand, the container shell 1 provides support and protection for the inner liner 2, making it less prone to breakage or damage. Therefore, the thickness of the inner liner 2 can be reduced as needed, thereby increasing the effective volume of the food preservation container and improving the user experience.

[0057] Furthermore, the opening of the inner liner 2 is provided with an annular first support portion 21. A portion of the first support portion 21 protrudes from the outer periphery of the inner liner 2; for example, the first support portion 21 is formed by folding or extending outward from the top of the inner liner 2. At least a portion of the first support portion 21 overlaps the top of the container shell 1, thereby providing upward support and limiting for the first support portion 21 by the container shell 1. The container lid 3 is provided with a sealing ring 31, which seals with the upper surface of the first support portion 21, thereby allowing the container lid 3 to elastically press against the first support portion 21. By having the first support portion 21 bear the axial compressive force of the connection between the container lid 3 and the container shell 1, the main structure of the inner liner 2 does not bear the axial compressive force, thereby reducing the structural strength requirements of the inner liner 2, which in turn allows for a further reduction in the thickness of the inner liner 2, increasing the effective volume of the preservation container, and improving the user experience of the preservation container.

[0058] like Figure 5 and Figure 6As shown, the dimension L of the first support portion 21 protruding from the outer periphery of the inner liner 2 is 1mm to 8mm. For example, the dimension L of the first support portion 21 protruding from the outer periphery of the inner liner 2 can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, or 8mm, etc., which can ensure that the first support portion 21 can be stably and reliably clamped between the container shell 1 and the sealing ring 31, and can also reduce the risk of damage to the first support portion 21. When the first support portion 21 protrudes less than 1 mm from the outer periphery of the inner liner 2, the first support portion 21 is prone to sinking into the container shell 1, causing the container shell 1 to fail to provide the expected support for the first support portion 21, or causing the sealing ring 31 to fail to provide the expected sealing for the first support portion 21. When the first support portion 21 protrudes more than 8 mm from the outer periphery of the inner liner 2, the first support portion 21 itself has low strength and is prone to breakage under the influence of vibration or temperature changes. Furthermore, the first support portion 21 is prone to interfere with the inner wall of the container lid 3, causing scratches and other damage to the edge of the first support portion 21.

[0059] In some embodiments, the dimension L of the first support portion 21 protruding from the outer periphery of the inner liner 2 is 2mm to 5mm. For example, the dimension L of the first support portion 21 protruding from the outer periphery of the inner liner 2 can be 2mm, 2.3mm, 2.5mm, 2.7mm, 3mm, 3.2mm, 3.5mm, 3.7mm, 4mm, 4.2mm, 4.5mm, 4.8mm, or 5mm, etc. This allows the first support portion 21 to overlap at the top of the container shell 1, close to the middle area of ​​the container shell 1 wall thickness, thereby providing more stable and reliable support for the first support portion 21 from the container shell 1, and also allows the first support portion 21 to fully exert its supporting function. When the dimension L of the first support part 21 protruding from the outer periphery of the inner liner 2 is less than 2mm, the overlapping area of ​​the first support part 21 at the top of the container shell 1 is too close to the inner wall of the container shell 1, and the inner wall of the container shell 1 is subjected to excessive force and is prone to deformation; when the dimension L of the first support part 21 protruding from the outer periphery of the inner liner 2 is greater than 5mm, a large suspended area is easily formed on the side of the first support part 21 away from the center of the inner liner 2, which leads to a reduction in the effective support area of ​​the first support part 21 and waste.

[0060] Furthermore, the top of the container shell 1 includes an annular first plane 10, and the lower surface of the first support portion 21 includes an annular second plane 210, with the second plane 210 and the first plane 10 fitting together. This ensures that the first support portion 21 and the top of the container shell 1 form a continuous planar contact, thereby providing stable and reliable support for the inner liner 2. It also ensures that only a vertical (i.e., axial) interaction force is generated between the top of the container shell 1 and the first support portion 21, without a horizontal (i.e., radial) interaction force, thus preventing the container shell 1 from tilting or warping.

[0061] Furthermore, the lower surface of the first support 21 includes an annular guide surface 212, which is connected to the side of the second plane 210 near the center of the inner liner 2. The guide surface 212 gradually slopes downwards along the direction near the center of the inner liner 2. When the inner liner 2 is inserted into the container shell 1 from top to bottom, the guide surface 212 contacts and abuts against the container shell 1, adjusting the position of the inner liner 2 within the container shell 1, bringing the center of the inner liner 2 closer to the center of the container shell 1, reducing the offset of the inner liner 2 within the container shell 1, thus ensuring that the inner liner 2 can be stably and reliably placed into the container shell 1. Specifically, when the inner liner 2 is inserted into the container shell 1, if the center of the inner liner 2 is aligned with the center of the container shell 1, the guide surface 212 does not contact the container shell 1; if the center of the inner liner 2 deviates significantly from the center of the container shell 1, the guide surface 212 contacts and abuts against the container shell 1, bringing the center of the inner liner 2 closer to the center of the container shell 1.

[0062] Furthermore, the upper surface of the first support portion 21 includes an annular third plane 211, and the sealing ring 31 is sealed to the third plane 211 to increase the sealing area and effectively prevent water leakage. At least a portion of the third plane 211 is located directly above the first plane 10, so that at least a portion of the first support portion 21 is sandwiched between the first plane 10 and the sealing ring 31, preventing large misalignment of the stress points on the upper and lower sides of the first support portion 21, which would cause the first support portion 21 to bear a large torque.

[0063] Furthermore, the distance H between the third plane 211 and the second plane 210 is 1.8mm to 2.8mm. For example, the distance H between the third plane 211 and the second plane 210 can be 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, or 2.8mm, etc., which can ensure that the inner liner 2 is stably and reliably supported on the container shell 1, and can also reasonably control the overall weight of the preservation container. When the distance H between the third plane 211 and the second plane 210 is less than 1.8mm, the thickness of the first support part 21 is too thin, which makes the first support part 21 prone to cracking and other damage; when the distance H between the third plane 211 and the second plane 210 is greater than 2.8mm, it will increase the weight of the inner liner 2 and affect the user experience of the preservation container.

[0064] Furthermore, an annular protrusion 311 is provided below the sealing ring 31, and the annular protrusion 311 is located at the end of the sealing ring 31 near the center of the container cap 3. When the container cap 3 is connected to the container shell 1, the annular protrusion 311 extends into the interior of the inner liner 2. On the one hand, when the container cap 3 is close to the container shell 1, the annular protrusion 311 below the sealing ring 31 preferentially contacts and abuts against the surface of the inner liner 2, which can further adjust the position of the inner liner 2 and prevent the center of the inner liner 2 from deviating from the center of the sealing ring 31, thus affecting the sealing fit between the sealing ring 31 and the sealing surface 211; on the other hand, the flexible annular protrusion 311 contacts the surface of the inner liner 2, which can provide protection for the inner liner 2 and prevent the container cap 3 from abrading or scratching the surface of the inner liner 2.

[0065] In some embodiments, the inner liner 2 is a transparent glass liner, meaning that the material of the inner liner 2 is tempered glass or borosilicate glass, or other transparent glass. The transparent inner liner 2 allows users to easily view the condition of the food inside, improving the convenience of using the food storage container. The glass inner liner is microwave-safe and relatively lightweight and portable. Furthermore, the smooth glass surface prevents dirt and odors from accumulating during use, making cleaning easier and further enhancing the convenience of using the food storage container.

[0066] like Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, a second support portion 13 is provided on the outer periphery of the container shell 1, and the lower end of the container cover 3 abuts against the upper surface of the second support portion 13 to limit the relative position of the container cover 3 and the container shell 1 along the axial direction, thereby limiting the axial clamping force between the container cover 3 and the container shell 1, and preventing the first support portion 21 or the sealing ring 31 from being damaged or failing due to excessive force.

[0067] Specifically, the container lid 3 includes a top cover portion 3a and a side cover portion 3b. The top cover portion 3a is used to cover the top opening of the inner liner 2, and the side cover portion 3b is used to connect to the container shell 1. The top cover portion 3a may be connected to a handle 32 to facilitate the user to lift and carry the food storage container; the handle 32 is hinged to the top cover portion 3a, so that the handle 32 can be configured to be in a storage state or a use state as needed. The side cover portion 3b extends to the outer periphery of the container shell 1, and the end of the side cover portion 3b away from the top cover portion 3a abuts against the upper surface of the second support portion 13. That is to say, the end of the side cover portion 3b away from the top cover portion 3a forms the lower end of the container lid 3; the side cover portion 3b may be provided with a threaded or snap-fit ​​connection structure, thereby realizing a detachable connection between the container lid 3 and the container shell 1.

[0068] Furthermore, the inner bottom surface of the container shell 1 is the first surface 11, and the outer bottom surface of the inner liner 2 is the second surface 22. The second surface 22 and the first surface 11 are spaced apart, meaning that the inner liner 2 is suspended inside the container shell 1, so that the inner liner 2 and the container shell 1 do not contact each other at the bottom. When the bottom of the container shell 1 is subjected to forces such as compression or impact, the force is difficult to be transmitted to the inner liner 2, thereby effectively preventing the inner liner 2 from cracking or being damaged. Understandably, in other embodiments, the second surface 22 and the first surface 11 may abut or adhere to each other.

[0069] Furthermore, the inner wall of the container shell 1 is a first wall surface 12, and the outer wall of the inner liner 2 is a second wall surface 23. The second wall surface 23 and the first wall surface 12 are spaced apart, that is, a continuous annular gap is formed between the second wall surface 23 and the first wall surface 12, so that the inner liner 2 and the container shell 1 do not contact each other circumferentially. When the side wall of the container shell 1 is subjected to forces such as compression or impact, the force is difficult to be transmitted to the inner liner 2, thereby effectively preventing the inner liner 2 from cracking or being damaged. Understandably, in other embodiments, the second wall surface 23 and the first wall surface 12 may abut or fit against each other.

[0070] Furthermore, the width of the annular interval gradually decreases from bottom to top, which not only makes the installation and removal of the inner liner 2 smoother, but also reduces the movement or shaking of the inner liner 2 within the container shell 1, thereby improving the stability and reliability of the inner liner 2 within the container shell 1. Specifically, the interior of the container shell 1 forms a larger allowance to prevent the inner liner 2 from being damaged by friction or collision with the inner wall of the container shell 1, thus allowing the inner liner 2 to be installed into or removed from the container shell 1 more smoothly; the opening of the container shell 1 forms a smaller allowance to confine the inner liner 2 within a smaller area, thereby reducing the radial movement or shaking of the inner liner 2 and improving the stability and reliability of the inner liner 2 within the container shell 1.

[0071] Furthermore, along the upward direction, the first wall surface 12 gradually slopes away from the center of the container shell 1. This means the interior of the container shell 1 has a flared structure with a smaller bottom and a larger opening, making it easier to align the inner liner 2 with the container shell 1 for installation and improving the ease of assembling the food preservation container. Similarly, along the upward direction, the second wall surface 23 gradually slopes away from the center of the inner liner 2. This means the exterior of the inner liner 2 has a flared structure with a smaller bottom and a larger top, increasing the structural strength of the inner liner 2 and facilitating the placement and removal of food within it. The slope angle of the second wall surface 23 is greater than that of the first wall surface 12, allowing the second wall surface 23 to gradually approach the first wall surface 12 from bottom to top, ensuring that the width of the annular gap gradually decreases from bottom to top.

[0072] like Figure 2 , Figure 4 and Figure 7 As shown, the top cover portion 3a of the container lid 3 is provided with a vent 33, and the container lid 3 also includes a vent valve 34, which can be made of a flexible material such as silicone. The vent valve 34 is inserted into the vent 33 and can slide along the axial direction of the vent 33 to open or close the vent 33, thereby balancing the internal and external air pressure of the preservation container as needed, making the opening and closing of the container lid 3 easier.

[0073] Specifically, the exhaust valve 34 includes a sealing section 341 and an exhaust section 342 arranged axially along the exhaust port 33. The cross-section of the sealing section 341 is adapted to the cross-section of the exhaust port 33, and the cross-section of the exhaust section 342 is smaller than the cross-section of the sealing section 341. When the sealing section 341 is inserted into the exhaust port 33 (refer to...), Figure 2 The outer wall of the sealing section 341 elastically fits against the inner wall of the vent 33, closing the vent 33 and thus achieving a reliable preservation effect; when the vent section 342 is inserted into the vent 33 (refer to...), Figure 4 An exhaust gap is formed between the outer wall of the exhaust section 342 and the inner wall of the exhaust hole 33, allowing the exhaust hole 33 to open. This allows the high-pressure gas inside the preservation container to be discharged, enabling the container lid 3 to close smoothly. Alternatively, it allows external atmosphere to enter the preservation container, preventing the negative pressure inside the preservation container from adsorbing the container lid 3 and affecting the normal opening of the container lid 3.

[0074] Furthermore, a limiting protrusion 343 can be provided between the venting section 342 and the sealing section 341 to ensure that the vent valve 34 can stably remain in either the sealed or venting state. The vent valve 34 has a gripping portion 344 and a limiting portion 345 at each end. The gripping portion 344 protrudes from the upper surface of the container cap 3 to facilitate the user's grip and operation of the vent valve 34; the limiting portion 345 protrudes from the lower surface of the container cap 3 to prevent the vent valve 34 from dislodging from the vent hole 33 and falling off.

[0075] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A food preservation container, characterized in that, include: Container shell (1); The inner liner (2) is at least partially fitted inside the container shell (1). The opening of the inner liner (2) is provided with an annular first support part (21). The first support part (21) protrudes from the outer periphery of the inner liner (2) by a size of 1mm to 8mm. At least a portion of the first support part (21) overlaps the top of the container shell (1). The container lid (3) is detachably connected to the container shell (1). The container lid (3) is provided with a sealing ring (31), which is sealed to the upper surface of the first support part (21).

2. The food preservation container according to claim 1, characterized in that, The top of the container shell includes an annular first plane, and the lower surface of the first support includes an annular second plane, the second plane being in contact with the first plane.

3. The food preservation container according to claim 2, characterized in that, The upper surface of the first support includes an annular third plane, at least a portion of which is located directly above the first plane, and the sealing ring is in a sealing fit with the third plane.

4. The food preservation container according to claim 3, characterized in that, The distance between the third plane and the second plane is 1.8mm to 2.8mm.

5. The food preservation container according to claim 2, characterized in that, The lower surface of the first support (21) includes an annular guide surface (212), which is connected to the side of the second plane near the center of the inner liner; Along the direction close to the center of the inner liner (2), the guide surface (212) gradually slopes downward.

6. The food preservation container according to claim 1, characterized in that, The first support part (21) protrudes from the outer periphery of the inner liner (2) by 2mm to 5mm.

7. The food preservation container according to any one of claims 1-6, characterized in that, The inner liner is a transparent glass liner.

8. The food preservation container according to any one of claims 1-6, characterized in that, The inner bottom surface of the container shell (1) is the first surface (11), and the outer bottom surface of the inner liner (2) is the second surface (22). The second surface (22) and the first surface (11) are spaced apart.

9. The food preservation container according to any one of claims 1-6, characterized in that, The inner wall of the container shell (1) is the first wall surface (12), and the outer wall of the inner liner (2) is the second wall surface (23). An annular gap is formed between the second wall surface (23) and the first wall surface (12). The width of the annular interval gradually decreases along the bottom-up direction.

10. The food preservation container according to any one of claims 1-6, characterized in that, The container lid (3) is provided with a vent hole (33), and the container lid (3) also includes a vent valve (34). The vent valve (34) is inserted into the vent hole (33) and can slide along the axial direction of the vent hole (33) to open or close the vent hole (33).

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