Self-heating meal box

Abstract

The utility model provides a self-heating lunch box. The self-heating lunch box comprises an inner lunch box, an outer lunch box and a box cover, a heating groove is formed in the outer meal box, a plurality of protruding supporting parts are arranged on the inner side wall of the heating groove, and first heat conduction grooves are formed among the supporting parts; the inner lunch box is arranged in the outer lunch box, the bottom of the inner lunch box abuts against the top of the supporting part, a containing groove is formed in the inner lunch box, a plurality of second heat conduction grooves are formed in the outer side of the inner lunch box, and the second heat conduction grooves surround the containing groove; the second heat conduction grooves are correspondingly communicated with the first heat conduction grooves; the box cover is arranged on the inner lunch box and closes the containing groove, and a plurality of air holes are formed in the box cover. Compared with the prior art, the self-heating lunch box disclosed by the utility model can be repeatedly used, heating can be realized only by supplementing the self-heating bag and water in the outer lunch box, and the self-heating lunch box is simple to operate and convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of catering, in particular to a self-heating lunch box. Background Art

[0002] A lunch box is a box specially used to hold food, also known as a bento box, mostly made of aluminum, stainless steel, or plastic. Lunch boxes include plastic lunch boxes, insulated lunch boxes, ordinary lunch boxes, and so on.

[0003] With the improvement of living standards, people often go camping in the wild. When camping, they usually carry some prepared meals, but these meals will gradually cool down in the lunch boxes. In order to eat hot food in the wild, they usually need to carry complex heating equipment to reheat the meals in the lunch boxes, such as heating stoves, etc., which requires carrying additional large items, which is inconvenient to carry and use. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art and provide a self-heating lunch box.

[0005] One embodiment of the utility model provides a self-heating lunch box, comprising: an inner lunch box, an outer lunch box and a box cover;

[0006] The outer lunch box is provided with a heating groove, the inner side wall of the heating groove is provided with a plurality of protruding support parts, and a first heat conduction groove is formed between the support parts;

[0007] The inner lunch box is arranged in the outer lunch box, the bottom of the inner lunch box is in contact with the top of the support part, the inner lunch box is provided with a receiving groove, the outer side of the inner lunch box is provided with a plurality of second heat conducting grooves, the plurality of second heat conducting grooves are arranged around the receiving groove, and the second heat conducting grooves are correspondingly connected with the first heat conducting grooves;

[0008] The box cover is arranged on the inner lunch box and closes the containing groove, and a plurality of air holes are arranged on the box cover.

[0009] In some optional embodiments, a handle is provided on the side of the inner lunch box, and the handle extends out of the outer lunch box.

[0010] In some optional embodiments, the handle includes an extension plate and a vertical plate, the extension plate is arranged on the side of the inner lunch box, the bottom of the extension plate abuts against the top of the outer lunch box, and the vertical plate is arranged at the bottom of the extension plate and is located outside the outer lunch box.

[0011] In some optional embodiments, the handle is snap-fitted with the outer lunch box.

[0012] In some optional embodiments, a protruding first buckle portion is provided on the handle, and a first buckle groove is provided on the outer side of the outer lunch box, and the first buckle portion is buckled with the first buckle groove.

[0013] In some optional embodiments, the handle is snap-fitted with the box cover.

[0014] In some optional embodiments, a second buckle groove is provided on the box cover, and the extension plate is snap-fitted with the second buckle groove.

[0015] In some optional embodiments, the handles are respectively provided on both sides of the inner lunch box.

[0016] In some optional embodiments, a plurality of heat-conducting columns are provided in the middle of the accommodating groove, a heat-conducting channel is provided in the heat-conducting columns, the bottom port of the heat-conducting channel is connected to the heating groove, and one of the air holes corresponds to the top port of the heat-conducting channel.

[0017] Compared with the prior art, the self-heating lunch box of the utility model can be reused. Heating can be achieved by simply adding a self-heating bag and water into the outer lunch box. The operation is simple and the carrying is convenient.

[0018] In order to more clearly understand the present invention, the specific implementation of the present invention will be described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a self-heating lunch box according to an embodiment of the utility model;

[0020] Figure 2 This is a schematic structural diagram of an inner lunch box according to an embodiment of the utility model;

[0021] Figure 3 This is a cross-sectional view of an inner lunch box and an outer lunch box according to an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 10. Inner lunch box; 11. Accommodating groove; 12. Second heat-conducting groove; 13. Handle; 14. Extension plate; 15. Vertical plate; 16. First buckle part; 17. Heat-conducting column; 18. Heat-conducting channel; 20. Outer lunch box; 21. Heating groove; 22. Support part; 23. First heat-conducting groove; 24. First buckle groove; 30. Box cover; 31. Air vent; 32. Second buckle groove. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. In the description of the utility model, unless otherwise specified, "multiple" means 2 or more, and "several" means 1 or more. In addition, unless otherwise specified, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are 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 on the present invention.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the description of the utility model, the description with reference to the terms "one embodiment", "some optional implementations" or "some optional embodiments" etc. 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 representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0028] See also Figure 1 One embodiment of the utility model provides a self-heating lunch box, including: an inner lunch box 10, an outer lunch box 20 and a box cover 30.

[0029] The outer lunch box 20 is provided with a heating groove 21, and the inner side wall of the heating groove 21 is provided with a plurality of protruding support parts 22, and a first heat conduction groove 23 is formed between the support parts 22. Figure 2 The inner lunch box 10 is arranged in the outer lunch box 20, the bottom of the inner lunch box 10 is abutted against the top of the support part 22, the inner lunch box 10 is provided with a receiving groove 11, and the outer side of the inner lunch box 10 is provided with a plurality of second heat conducting grooves 12, the plurality of second heat conducting grooves 12 are arranged around the receiving groove 11, and the second heat conducting grooves 12 are correspondingly connected with the first heat conducting grooves 23; the box cover 30 is arranged on the inner lunch box 10 and closes the receiving groove 11, and the box cover 30 is provided with a plurality of ventilation holes 31.

[0030] The self-heating bag is pre-placed in the heating tank 21. When the food needs to be heated, only water needs to be added into the heating tank 21. It is easy to use, and the self-heating lunch box can be reused. Only the self-heating bag needs to be replaced. The self-heating bag produces a chemical reaction when it meets water and emits heat, thereby heating the water. After the water is heated, it boils and evaporates to produce water vapor. The water vapor rises and contacts the bottom of the inner lunch box 10, thereby heating the bottom of the inner lunch box 10, and then heating the bottom of the food; after the water vapor rises, it is blocked by the inner lunch box 10, and then it will enter the second heat conducting groove 12 through the first heat conducting groove 23, so as to heat the side of the inner lunch box 10, and then heat the side of the food; after the water vapor passes through the second heat conducting groove 12, it enters the containing groove 11 from the gap between the top of the inner lunch box 10 and the bottom of the box cover 30. Since the air vent 31 cannot quickly discharge the water vapor, the water vapor will fill the containing groove 11, and then heat the top of the food in the containing groove 11. In summary, the water vapor can heat the bottom, side and top of the food, improve the uniformity of heating, achieve a better heating effect on the food, and reduce the amount of self-heating bags required.

[0031] Self-heating packs are special heating packs for food. They are made of quicklime, sodium bicarbonate, magnesium sulfate and other materials. They will react chemically when in contact with water to generate heat to heat food, and the temperature can reach over 100°C.

[0032] In some optional embodiments, a handle 13 is provided on the side of the inner lunch box 10, and the handle 13 extends out of the outer lunch box 20. After the food is heated, the user can take the inner lunch box 10 out of the outer lunch box 20 by the handle 13 to avoid burns.

[0033] In some optional embodiments, the handle 13 includes an extension plate 14 and a vertical plate 15. The extension plate 14 is arranged on the side of the inner lunch box 10, and the bottom of the extension plate 14 abuts against the top of the outer lunch box 20. The vertical plate 15 is arranged at the bottom of the extension plate 14 and is located outside the outer lunch box 20. The handle 13 is L-shaped, which is convenient for limiting the position of the inner lunch box 10 relative to the outer lunch box 20 and reducing the shaking of the inner lunch box 10.

[0034] In some optional embodiments, the handle 13 is snap-fitted with the outer lunch box 20, which facilitates the fixation between the handle 13 and the outer lunch box 20, so as to facilitate the fixation between the outer lunch box 20 and the inner lunch box 10 during carrying and heating. In some optional embodiments, a protruding first snap-fit ​​portion 16 is provided on the handle 13, and a first snap-fit ​​groove 24 is provided on the outer side of the outer lunch box 20. The first snap-fit ​​portion 16 is snap-fitted with the first snap-fit ​​groove 24. In this embodiment, the first snap-fit ​​portion 16 is provided on the side of the vertical plate 15 facing the outer lunch box 20.

[0035] In some optional embodiments, the handle 13 is snap-fitted with the box cover 30 to facilitate the fixation between the box cover 30 and the inner lunch box 10 during carrying and heating. In some optional embodiments, a second buckle groove 32 is provided on the box cover 30, and the extension plate 14 is snap-fitted with the second buckle groove 32.

[0036] In some optional embodiments, handles 13 are provided on both sides of the inner lunch box 10 to facilitate the user to lift the inner lunch box 10 stably.

[0037] See also Figure 3 In some optional embodiments, a plurality of heat-conducting columns 17 are provided in the middle of the accommodating groove 11, and a heat-conducting channel 18 is provided in the heat-conducting column 17. The bottom end of the heat-conducting channel 18 is connected to the heating groove 21, and one of the air holes 31 corresponds to the top end of the heat-conducting channel 18. The heat-conducting columns 17 can separate the food. When water vapor passes through the heat-conducting channel 18, the heat-conducting columns 17 can be heated, and then the middle part of the food can be heated, so as to avoid the poor heating effect of the middle part of the food due to the distance from the side and bottom of the inner lunch box 10, and improve the temperature uniformity of the food.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-heating lunch box, characterized in that: include: Inner lunch box, outer lunch box and lid; The outer lunch box is provided with a heating groove, the inner side wall of the heating groove is provided with a plurality of protruding support parts, and a first heat conduction groove is formed between the support parts; The inner lunch box is arranged in the outer lunch box, the bottom of the inner lunch box is in contact with the top of the support part, the inner lunch box is provided with a receiving groove, the outer side of the inner lunch box is provided with a plurality of second heat conducting grooves, the plurality of second heat conducting grooves are arranged around the receiving groove, and the second heat conducting grooves are correspondingly connected with the first heat conducting grooves; The box cover is arranged on the inner lunch box and closes the containing groove, and a plurality of air holes are arranged on the box cover.

2. A self-heating lunch box according to claim 1, characterized in that: A handle is provided on the side of the inner lunch box, and the handle extends out of the outer lunch box.

3. A self-heating lunch box according to claim 2, characterized in that: The handle comprises an extension plate and a vertical plate, wherein the extension plate is arranged on the side of the inner lunch box, the bottom of the extension plate abuts against the top of the outer lunch box, and the vertical plate is arranged at the bottom of the extension plate and is located outside the outer lunch box.

4. A self-heating lunch box according to claim 2, characterized in that: The handle is snap-fitted with the outer lunch box.

5. A self-heating lunch box according to claim 2, characterized in that: The handle is provided with a protruding first buckle portion, and the outer side of the outer lunch box is provided with a first buckle groove, and the first buckle portion is buckled with the first buckle groove.

6. A self-heating lunch box according to claim 2, characterized in that: The handle is snap-fitted with the box cover.

7. A self-heating lunch box according to claim 3, characterized in that: The box cover is provided with a second buckle groove, and the extension plate is buckled in the second buckle groove.

8. A self-heating lunch box according to claim 2, characterized in that: The handles are respectively arranged on both sides of the inner lunch box.

9. A self-heating lunch box according to any one of claims 1 to 8, characterized in that: A plurality of heat-conducting columns are arranged in the middle of the accommodating groove, a heat-conducting channel is arranged in the heat-conducting column, a bottom port of the heat-conducting channel is connected with the heating groove, and one of the air holes corresponds to the top port of the heat-conducting channel.

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