Water vapor separation lunch box cover and lunch box
Patent Information
- Application Number
- CN202522231498.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-10-13
- Estimated Expiration
- 2035-10-22
AI Technical Summary
然而，在餐盒搬运、运输或倾斜过程中，盒内液体（如汤汁、油汁）容易因晃动而从通气孔中外溢，污染包装外部或相邻物品，严重影响使用体验与卫生安全
[0014]基于上述技术方案，本申请实施例至少具有以下有益效果：当餐盒内部热气上升时，热气会通过通孔进入第一分区，再绕过隔板经通气间隙进入第二分区，从透气孔排出外部环境，而餐盒中的汤汁从通孔处漏出之后会被第一分区阻挡，不会随气流直接从透气孔排出，其最终会从通孔处回流进去，从而实现了水汽分离的效果，这种餐盒盖既能保持餐盒的通气性，又能防止餐盒中的汤汁泄露。因此本申请的餐盒在盛装热食时能够实现水汽的顺畅排放，同时避免了汤汁渗漏，解决了现有技术中难以兼顾“通气”和“防泄漏”的问题。
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Figure CN224848309U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of food packaging technology, and in particular to a water vapor separation lunch box lid and lunch box. Background Technology
[0002] In actual use, especially when food containers are sealed immediately after being filled with hot food, the heat continuously emitted by the food will create a large amount of water vapor inside the container. As the temperature changes, the internal pressure of the food container gradually increases. When the pressure difference between the inside and outside reaches a certain level, it can easily cause the container or lid to expand, dent, or warp. This not only affects the flatness of the appearance and the stability of stacking, but may also damage the sealing effect, causing leakage or loss of freshness.
[0003] To address the issue of food container deformation caused by heat buildup, a common practice in existing technologies is to create vents in the top of the lid to promote air circulation and balance pressure. However, during handling, transportation, or tilting, liquids inside the container (such as soup or oil) can easily spill out through the vents due to movement, contaminating the outside of the packaging or adjacent items, severely impacting user experience and hygiene. Furthermore, the presence of vents reduces the overall airtightness of the container, hindering its ability to effectively preserve food flavor and temperature, and may introduce external contaminants.
[0004] Therefore, the existing lunchbox structure with ventilation holes cannot achieve a good balance between "ventilation requirements during the hot food sealing stage" and "leakage prevention requirements during storage and transportation", which restricts its applicability in multiple scenarios. Utility Model Content
[0005] This application aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, embodiments of this application provide a steam-separating lunchbox lid and lunchbox, which enables smooth heat dissipation while preventing soup leakage.
[0006] A moisture-separating food container lid, comprising: A cover body, wherein a groove is provided on the cover body, and a through hole is provided at the bottom of the groove; A sealing plug is connected to the edge of the cover body via a connecting strap. The sealing plug is used to assemble into the groove. A shallow groove is provided on the side of the sealing plug facing the bottom of the groove. A partition is provided in the middle of the shallow groove, and the partition divides the shallow groove into a first section and a second section. The height of the partition is lower than the height of the edge of the shallow groove. A vent hole is provided in the second section. The first section is used to correspond to the through hole. After the sealing plug is assembled into the groove, the partition and the bottom of the groove form a ventilation gap.
[0007] In an optional or preferred embodiment, a protrusion corresponding to the through hole is provided in the first partition, and the height of the protrusion is lower than the height of the first partition.
[0008] In an optional or preferred embodiment, the connecting strip is provided with a first tear seam.
[0009] In an optional or preferred embodiment, a handle is provided on one side of the cover.
[0010] In an optional or preferred embodiment, the edge of the lid is provided with a second tear seam located on both sides of the handle.
[0011] In an optional or preferred embodiment, the bottom of the groove is inclined toward the vent hole.
[0012] In an optional or preferred embodiment, a raised ring is provided in the middle of the sidewall of the sealing plug, and a groove is provided in the middle of the sidewall of the groove, with the raised ring engaging with the groove.
[0013] A lunch box, comprising: Box body; The water vapor separation lunch box cover described above is installed on the box body.
[0014] Based on the above technical solution, the embodiments of this application have at least the following beneficial effects: When the hot air inside the lunchbox rises, it enters the first compartment through the through-hole, then bypasses the partition and enters the second compartment through the ventilation gap, and is discharged to the external environment through the vent. Meanwhile, the soup leaking from the through-hole is blocked by the first compartment and will not be discharged directly through the vent with the airflow; instead, it will eventually flow back in through the through-hole, thus achieving the effect of water vapor separation. This lunchbox lid can maintain the ventilation of the lunchbox while preventing soup leakage. Therefore, the lunchbox of this application can achieve smooth water vapor discharge when holding hot food, while preventing soup leakage, solving the problem of difficulty in balancing "ventilation" and "leakage prevention" in the prior art. Attached Figure Description
[0015] The present application will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the structure of a water vapor separation lunch box lid provided in one embodiment of this application; Figure 2 This is a schematic diagram of the structure of a lunchbox provided in one embodiment of this application; Figure 3 yes Figure 1 A magnified view of a portion of point A in the middle.
[0016] Figure label: 100-Lid; 120-Sealing plug; 121-Shallow groove; 122-Second partition; 123-First partition; 124-Ventilation hole; 125-Raised dot; 126-Divider; 130-Connecting strap; 131-First tear seam; 140-Handle; 141-Second tear seam; 150-Groove; 151-Through hole; 200-Box body. Detailed Implementation
[0017] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0022] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0023] In actual use, especially when food containers are sealed immediately after being filled with hot food, the heat continuously emitted by the food will create a large amount of water vapor inside the container. As the temperature changes, the internal pressure of the food container gradually increases. When the pressure difference between the inside and outside reaches a certain level, it can easily cause the container or lid to expand, dent, or warp. This not only affects the flatness of the appearance and the stability of stacking, but may also damage the sealing effect, causing leakage or loss of freshness.
[0024] To address the issue of food container deformation caused by heat buildup, a common practice in existing technologies is to create vents in the top of the lid to promote air circulation and balance pressure. However, during handling, transportation, or tilting, liquids inside the container (such as soup or oil) can easily spill out through the vents due to movement, contaminating the outside of the packaging or adjacent items, severely impacting user experience and hygiene. Furthermore, the presence of vents reduces the overall airtightness of the container, hindering its ability to effectively preserve food flavor and temperature, and may introduce external contaminants.
[0025] Therefore, the existing lunchbox structure with ventilation holes cannot achieve a good balance between "ventilation requirements during the hot food sealing stage" and "leakage prevention requirements during storage and transportation", which restricts its applicability in multiple scenarios.
[0026] Reference Figure 1 , Figure 2 , Figure 3This application discloses a lunchbox, including a box body 200 and a moisture-separating lunchbox lid mounted on the box body 200. The moisture-separating lunchbox lid includes a lid body 100 and a sealing plug 120. The upper surface of the lid body 100 is provided with an inwardly recessed groove 150, and the bottom of the groove 150 has a through hole 151. The sealing plug 120 is connected to the edge of the lid body 100 by a connecting strap 130, which, while maintaining ease of use, can prevent the sealing plug 120 from being lost when separated. After the sealing plug 120 is assembled into the groove 150, a shallow groove 121 is provided on the side of the bottom of the sealing plug 120 facing the bottom of the groove 150. A partition 126 is provided in the middle of the shallow groove 121, which divides the shallow groove 121 into a first section 123 and a second section 122. The height of the partition 126 is lower than the edge height of the shallow groove 121. Therefore, after the sealing plug 120 is assembled, a ventilation gap is formed between the partition 126 and the bottom of the groove 150, allowing water vapor to flow through the ventilation gap in the first section 123 and the second section 122.
[0027] In this design, the first partition 123 corresponds to the through hole 151 of the groove 150, and the second partition 122 is provided with a vent hole 124. Thus, when hot air rises inside the food container, it enters the first partition 123 through the through hole 151, then bypasses the partition 126 and enters the second partition 122 through the ventilation gap, finally venting out through the vent hole 124. Meanwhile, any soup leaking from the food container through the through hole 151 is blocked by the first partition 123 and does not escape directly through the vent hole 124 with the airflow. Instead, it flows back in through the through hole 151, achieving a water vapor separation effect. This food container lid maintains ventilation while preventing soup leakage. Therefore, the food container of this application allows for smooth water vapor discharge when holding hot food, while preventing soup leakage, solving the problem of balancing "ventilation" and "leakage prevention" in existing technologies.
[0028] Furthermore, a protrusion 125 is provided at the bottom of the first partition 123, which corresponds to the position of the through hole 151 in the groove 150, and the height of the protrusion 125 is lower than the height of the first partition 126. The protrusion 125 can divert the hot air coming out of the through hole 151, and at the same time reduce the amount of soup leaking out of the through hole 151.
[0029] To facilitate selective disassembly or permanent separation of the sealing plug 120 in different usage scenarios, a first tear slit 131 is provided on the connecting strap 130. If the user only needs to temporarily open or close the cover, the connecting strap 130 remains intact; if the user needs to completely separate the sealing plug 120 from the cover 100, it can be torn along the first tear slit 131, allowing for flexible operation. When it is necessary to open the cover 100, the connecting strap 130 is torn along the first tear slit 131, and then the cover 100 can be lifted and opened along the torn section.
[0030] In some embodiments, a handle 140 is provided on one side of the lid 100 to facilitate the user's opening or carrying of the lunchbox. Furthermore, second tear seams 141 are symmetrically provided on both sides of the handle 140 on the lid 100. This design facilitates the formation of a controllable opening point during the lunchbox packaging process, further enhancing ease of use.
[0031] To facilitate the better return of the soup leaking from the through hole 151, the bottom of the groove 150 is designed to slope towards the vent hole 124. The sloped bottom allows the leaked soup to naturally collect at the through hole 151 and flow back in under the influence of gravity.
[0032] Regarding the engagement between the sealing plug 120 and the groove 150, the sealing plug 120 has a raised ring in the middle of its side wall, while the groove 150 has a corresponding slot in the middle of its side wall. The interlocking engagement of the raised ring and the slot ensures the reliable fixation of the sealing plug 120, preventing it from loosening due to vibration or tilting during transportation, thereby further improving the sealing performance and safety of the lunchbox.
[0033] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.
Claims
1. A water vapor separation lunch box lid, characterized in that, include: A cover body, wherein a groove is provided on the cover body, and a through hole is provided at the bottom of the groove; A sealing plug is connected to the edge of the cover body via a connecting strap. The sealing plug is used to assemble into the groove. A shallow groove is provided on the side of the sealing plug facing the bottom of the groove. A partition is provided in the middle of the shallow groove, and the partition divides the shallow groove into a first section and a second section. The height of the partition is lower than the height of the edge of the shallow groove. A vent hole is provided in the second section. The first section is used to correspond to the through hole. After the sealing plug is assembled into the groove, the partition and the bottom of the groove form a ventilation gap.
2. The water vapor separation lunch box lid according to claim 1, characterized in that: The first partition is provided with protrusions corresponding to the through holes.
3. The water vapor separation lunch box lid according to claim 1, characterized in that: The connecting strip is provided with a first tear seam.
4. The water vapor separation lunch box lid according to claim 1, characterized in that: A handle is provided on one side of the cover.
5. The water vapor separation lunch box lid according to claim 4, characterized in that: The edge of the box lid is provided with a second tear seam located on both sides of the handle.
6. The water vapor separation lunch box lid according to claim 1, characterized in that: The bottom of the groove slopes toward the vent hole.
7. The water vapor separation lunch box lid according to claim 1, characterized in that: The sealing plug has a raised ring in the middle of its side wall, and the groove has a slot in the middle of its side wall, with the raised ring engaging with the slot.
8. A lunch box, characterized in that, include: Box body; The water vapor separation lunch box cover according to any one of claims 1 to 7, wherein the water vapor separation lunch box cover is installed on the box body.