Self-heating meal box
By incorporating a support column and an inner tube conductive structure within the self-heating food container, along with a baffle mesh in the inner tube for stable venting, and enhanced safety with a handle and buckles, the system solves the problems of inconvenient operation and safety hazards associated with traditional self-heating food containers, achieving a safe and reliable water filling and venting process.
Patent Information
- Application Number
- CN202423167699.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Traditional self-heating food containers are inconvenient to operate and pose safety hazards during the process of adding water and venting air, and can easily burn users and clog the lid.
Design a self-heating food container by setting support columns inside the bottom box to form an elevated layer, and setting an inner tube in the inner box that is connected to the lid. The inner tube is equipped with a baffle to stabilize exhaust and prevent splashing. The handle and buckle improve safety, and the transparent part allows observation of the liquid level.
Adding water after assembly improves safety, reduces operational difficulty, ensures stable venting, prevents hot water splashing, and enhances usage safety.
Smart Images
Figure CN223554452U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic products, and in particular to a self-heating lunch box. Background Technology
[0002] Self-heating food is a relatively new product in recent years. Its main feature is a self-heating pack, whose main components include quicklime, iron powder, coke powder, sodium carbonate, calcined diatomaceous earth, activated carbon, salt, and quicklime. When the self-heating pack comes into contact with water, a chemical reaction occurs, releasing a large amount of heat. To use, simply add cold water to soak the self-heating pack to heat the food.
[0003] Traditional self-heating meal boxes mainly consist of a base, an inner box, and a lid (the lid has a small vent at the top for air release). The inner box is located inside the base. To use it, the user places the self-heating pack at the bottom of the base, adds cold water, then places the inner box containing the meal into the base, and finally attaches the lid to the base. The user then waits for the meal to heat up. This traditional design has the following drawbacks:
[0004] 1. The self-heating pack reacts very quickly when it comes into contact with water, usually starting to heat up within 5 to 10 seconds. If the user is not quick and precise enough when adding water and placing the inner box, they may easily touch the hot water and get scalded.
[0005] 2. The small holes on the lid can easily become blocked, leading to expansion and explosion.
[0006] Therefore, to address the above issues, it is necessary to improve traditional self-heating meal boxes, reduce operational difficulties, and enhance safety. Utility Model Content
[0007] Based on this, the present invention provides a self-heating lunch box. By setting an inner tube that can be connected to the outside, the hollow layer of the bottom box is kept connected to the outside. This not only allows water to be added after assembly to improve safety, but also forms a stable and reliable vent, greatly reducing the difficulty of operation for users.
[0008] A self-heating meal box, comprising:
[0009] The bottom box has multiple support columns; these support columns form an open space at the bottom of the inner cavity of the bottom box.
[0010] An inner box housed within a base box; the inner box is positioned atop a support column; an inner tube runs through the center of the inner box; the inner box also contains a baffle mesh located within the inner tube; and...
[0011] A cover that covers the bottom box; the top of the cover has an operating port for connecting the inner tube.
[0012] The aforementioned self-heating food container features a support column in the bottom box that forms a storage layer for holding the self-heating pack and cold water, and the support column also supports the inner box. Simultaneously, an inner tube connects the storage layer to the outside of the lid. In use, the self-heating pack is placed in the bottom box, followed by the inner box, and then the lid is closed. Next, cold water is poured into the inner tube through the operating port, flowing along the inner tube into the storage layer to soak the self-heating pack. During the heating process, the steam generated by the boiling hot water is expelled upwards through the inner tube. Simultaneously, a baffle in the inner tube intercepts splashed hot water, preventing it from splashing outwards from the operating port. This design, with its internal tube that connects to the outside, maintains communication between the bottom box's raised layer and the outside. This allows for water addition only after assembly, improving safety, and provides a stable and reliable vent, significantly reducing the difficulty of operation for the user.
[0013] In one embodiment, the top periphery of the base box is provided with multiple handles. The handles facilitate the user's movement of the base box while the self-heating pack is in operation, improving operational safety.
[0014] In one embodiment, at least two oppositely positioned handles are provided with latches; the latches engage with the lid. The latches can lock the lid in place when the self-heating pack is in operation, preventing the lid from being blown off by steam.
[0015] In one embodiment, at least one side of the bottom box is provided with a transparent section for observing the liquid level. The transparent section allows the user to easily observe the amount of cold water added.
[0016] In one embodiment, the baffle is located at the bottom of the inner tube. This design helps to intercept splashed hot water at the bottom of the inner box, greatly reducing the risk of hot water splashing outward from the operating port.
[0017] In one embodiment, the top of the lid has a rim that surrounds the operating port. The rim can restrict the flow of cold water into the operating port, preventing cold water from flowing out to other areas of the lid.
[0018] In one embodiment, the inner side of the rim is provided with a flow guide slope that slopes downward toward the operating port. The flow guide slope can guide cold water to enter the inner pipe more smoothly.
[0019] In one embodiment, the lid has a sealing groove around its periphery; the bottom box has a sealing protrusion around its periphery that mates with the sealing groove. This design can improve the sealing performance between the lid and the bottom box. Attached Figure Description
[0020] Figure 1 A perspective view of a self-heating lunch box according to an embodiment of the present utility model;
[0021] Figure 2 forFigure 1 A three-dimensional view of the self-heating meal box from another perspective;
[0022] Figure 3 for Figure 1 An exploded view of the self-heating meal box shown;
[0023] Figure 4 for Figure 1 A half-sectional view of the self-heating meal box shown;
[0024] Figure 5 for Figure 4 A perspective view of the bottom box of the self-heating meal box shown;
[0025] Figure 6 for Figure 4 A perspective view of the inner box of the self-heating meal box shown;
[0026] Figure 7 for Figure 6 A perspective view of the inner box from another angle;
[0027] Figure 8 for Figure 4 A perspective view of the lid of the self-heating meal box shown;
[0028] Figure 9 for Figure 8 The shown is a three-dimensional view of the lid after it has been flipped over.
[0029] The meanings of the labels in the attached diagram are as follows:
[0030] 100-Self-heating lunch box;
[0031] 10-Base box, 11-Support column, 12-Sealing protrusion, 13-Handle, 131-Snap fastener;
[0032] 20-Inner box, 21-Inner tube, 22-Baffle mesh;
[0033] 30-Lid, 31-Operating port, 32-Sealing groove, 33-Side edge, 331-Guiding slope. Detailed Implementation
[0034] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model 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 utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "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 are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.
[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0038] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0039] 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.
[0040] like Figures 1 to 9 As shown, this is a self-heating lunch box 100 of one embodiment of the present invention, especially for disposable self-heating tableware.
[0041] like Figures 1 to 3 As shown, the self-heating meal box 100 includes: a base box 10, an inner box 20 housed within the base box 10, and a lid 30 covering the base box 10. The base box 10 is used to hold the self-heating pack and cold water, while the inner box 20 is used to hold the meal. The lid 30 is used to combine with the base box 10 to form a cavity structure for housing the inner box 20.
[0042] The following text, combined with Figures 1 to 9 Further explanation is provided regarding the aforementioned self-heating meal box 100.
[0043] like Figure 5 As shown, the bottom box 10 has multiple support columns 11, and the multiple support columns 11 form an open layer at the bottom of the inner cavity of the bottom box 10. For example, in this embodiment, the bottom box 10 is generally square, and four evenly distributed support columns 11 are provided at the bottom of the inner cavity of the bottom box 10.
[0044] like Figure 1 and Figure 4 As shown, the inner box 20 is placed on top of the support column 11. Combined Figure 4 , Figure 6 ,as well as Figure 7 As shown, the inner box 20 has a through inner tube 21 at its center, and the inner box 20 also has a baffle 22 located in the inner tube 21. In this embodiment, the inner tube 21 is a hollow tube, with its lower opening located at the bottom of the inner box 20, and its upper opening extending upward from the center of the inner box 20.
[0045] Combination Figure 4 , Figure 8 as well as Figure 9 As shown, the top of the cover 30 has an operating port 31 for connecting the inner tube 21. The shape of the cover 30 matches the shape of the top periphery of the base box 10; that is, in this embodiment, the cover 30 is an integral square plate. The operating port 31 is a square hole that vertically penetrates the cover 30. Furthermore, in conjunction with... Figure 4 , Figure 5 ,as well asFigure 9 As shown, in this embodiment, the cover 30 has a sealing groove 32 around its periphery. The bottom box 10 has a sealing protrusion 12 that mates with the sealing groove 32 around its periphery. This design can improve the sealing performance between the cover 30 and the bottom box 10.
[0046] Brief description of working principle:
[0047] like Figure 3 and Figure 4 As shown, the support column 11 provided in the bottom box 10 forms a storage layer for accommodating the self-heating pack and cold water, and the support column 11 supports the inner box 20. Meanwhile, the inner tube 21 connects the storage layer to the outside of the cover 30. Figure 1 and Figure 4 As shown, during use, after placing the self-heating pack into the bottom box 10, place the inner box 20 in, and then close the lid 30. Next, pour cold water into the inner tube 21 through the operation port 31. The cold water flows along the inner tube 21 into the storage layer to soak the self-heating pack. During the heating process of the self-heating pack, the steam generated by the boiling hot water is discharged upward through the inner tube 21. At the same time, the baffle 22 in the inner tube 21 intercepts splashed hot water, preventing hot water from splashing out from the operation port 31. In addition, the baffle 22 can buffer and divert the cold water entering the inner tube 21, so that the cold water can be introduced into the bottom box 10 more evenly and slowly. The baffle 22 also meets the need for venting and has a certain filtering function, reducing the risk of foreign objects mixed in with the cold water entering the bottom box 10.
[0048] To improve operational safety, the self-heating lunch box 100 can be further improved.
[0049] For example, such as Figure 4 and Figure 8 As shown, in this embodiment, the top of the cover 30 is provided with a perimeter 33. The perimeter 33 surrounds the operating port 31. The perimeter 33 can restrict the cold water entering the operating port 31 and prevent the cold water from flowing out to other areas of the cover 30.
[0050] Furthermore, the inner side of the perimeter 33 is provided with a guide slope 331 that slopes downward toward the operating port 31. The guide slope 331 can guide cold water to enter the inner pipe 21 more smoothly.
[0051] For example, such as Figure 5 As shown, in this embodiment, the top periphery of the base box 10 is provided with multiple handles 13. The handles 13 facilitate the user to move the base box 10 while the self-heating pack is in operation, thereby improving operational safety.
[0052] Furthermore, considering that the boiling water and steam generated during the operation of the self-heating pack will create an impact force, in order to better prevent the inner box 20 and the lid 30 from being opened, combined with... Figure 4 andFigure 5 As shown, in this embodiment, at least two oppositely arranged handles 13 are provided with latches 131. The latches 131 engage with the lid 30. The latches 131 can lock the lid 30 when the self-heating pack is working, preventing the lid 30 from being blown away by steam. For example, the latch 131 can be a barbed structure, and its side facing the center of the base box 10 is provided with a guide slope to facilitate guiding the lid 30 to slide in and be locked in.
[0053] For example, such as Figure 4 and Figure 7 As shown, in this embodiment, the baffle 22 is located at the bottom of the inner tube 21. This design helps to intercept the splashed hot water at the bottom of the inner box 20, greatly reducing the risk of hot water splashing outward from the operation port 31.
[0054] Considering that in this design, the self-heating food container 100 is assembled before cold water is added, it is difficult for the user to observe the remaining amount of cold water in the bottom container 10 from above the lid 30 (due to obstruction by the lid 30, the inner container 20, and the food itself). Therefore, in some embodiments, at least one side of the bottom container 10 is provided with a transparent portion for observing the liquid level. The transparent portion allows the user to easily observe the amount of cold water added.
[0055] The aforementioned self-heating food container 100, by setting an inner tube 21 that can conduct to the outside, keeps the suspended layer of the bottom box 10 connected to the outside. This not only allows water to be added only after assembly to improve safety, but also forms a stable and reliable vent, greatly reducing the difficulty of operation for users.
[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0057] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A self-heating lunch box, characterized in that, include: Base box; The bottom box has multiple support columns; the multiple support columns form an open layer at the bottom of the inner cavity of the bottom box; An inner box housed within the base box; the inner box is placed on top of the support column; an inner tube extends through the center of the inner box; the inner box also includes a baffle mesh located within the inner tube; and A cover covering the bottom box; the top of the cover has an operating port for engaging the inner tube.
2. The self-heating lunch box according to claim 1, characterized in that, The top perimeter of the bottom box is provided with multiple handles.
3. The self-heating lunch box according to claim 2, characterized in that, At least two oppositely positioned handles are provided with buckles; the buckles engage with the lid.
4. The self-heating lunch box according to claim 1, characterized in that, The bottom box has a transparent section on at least one side for observing the liquid level.
5. The self-heating lunch box according to claim 1, characterized in that, The baffle is located at the bottom end of the inner tube.
6. The self-heating lunch box according to claim 1, characterized in that, The top of the cover is provided with a rim; the rim surrounds the operating port.
7. The self-heating lunch box according to claim 6, characterized in that, The inner side of the enclosure is provided with a guide slope that slopes downward toward the operating port.
8. The self-heating lunch box according to claim 1, characterized in that, The lid has a sealing groove around its periphery; the bottom box has a sealing protrusion around its periphery that engages with the sealing groove.