CN210382985U - Self-heating lunch box - Google Patents

Abstract

Self-heating cutlery box, comprises a box body, the box body includes the heat-conducting layer, the heat-conducting layer is fixed in the box body bottom, the box body bottom has first fretwork part, the heat-conducting layer with the edge laminating of first fretwork part. The heat conduction layer extends upwards from the bottom of the box body along the side wall of the box body and is fixedly connected with the side wall of the box body. The utility model discloses replace the partly of box body bottom with the heat-conducting layer to and the heat-conducting layer extends to the box body lateral wall, make the heating member can improve heat conduction efficiency through the heat-conducting layer and transmit the heat rapidly for the food that needs the heating, satisfy the outdoor demand that makes things convenient for the diet.

Description

Self-heating lunch box

Technical Field

The utility model relates to a packing cutlery box of convenience food, in particular to cutlery box with self-heating function.

Background

Current self-heating cutlery box is mostly integrated into one piece's plastics cutlery box, or built-in heating agent, or external heating package, all adopts basically to place heating device in the bottom of the cutlery box mode of heating, nevertheless because plastics thermal conductivity is poor, the heating effect of food is not good. There are also all aluminum foil packets that use air meals like airplane for adequate heating, but because of the physical properties of the aluminum foil itself, they cannot be made into a package box of sufficient strength. When people want to eat the convenient food which has long shelf life, stable quality and sufficient and rapid heating outdoors, the prior art is not sufficient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a self-heating cutlery box with high heat conduction efficiency is provided to overcome self-heating cutlery box heat conduction efficiency among the prior art and hang down, food heating insufficient defect.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

the utility model provides a self-heating cutlery box, includes the box body, the box body includes the heat-conducting layer, the heat-conducting layer is fixed in the box body bottom, the box body bottom has first fretwork part, the heat-conducting layer with the edge laminating of first fretwork part.

Further, the heat conduction layer extends upwards from the bottom of the box body along the side wall of the box body and is fixedly connected with the side wall of the box body.

Further, the heat conduction layer is located at the inner bottom of the box body and extends upwards along the inner side wall of the box body.

Further, the heat conduction layer is located at the outer bottom of the box body and extends upwards along the outer side wall of the box body.

Further, the side wall of the box body is provided with a second hollow part, and the second hollow part corresponds to the heat conduction layer extending to the outer side wall of the box body.

Further, the heat conduction layer extends from the bottom of the box body to the middle of the side wall of the box body.

Further, the upper opening of the box body is sealed by a heat conduction material.

Further, the first hollow part and the second hollow part are respectively one or more holes.

Further, the heat conduction layer is an aluminum foil.

Further, the heat conduction layer is fixed at the bottom of the box body in a hot pressing mode.

Compared with the prior art, the utility model has the advantages of replace a part of box body bottom with the heat-conducting layer to and the heat-conducting layer extends to the box body lateral wall, make the heating member can pass through the heat-conducting layer and transmit the heat rapidly for the food that needs the heating, improve heat conduction efficiency, satisfy the outdoor demand of making things convenient for the diet.

Drawings

Fig. 1 is a schematic view of an external structure of a cartridge according to a first embodiment of the present invention.

Fig. 2 is a schematic view of an internal structure of a case according to a first embodiment of the present invention.

Fig. 3 is a top view of the case according to the first embodiment of the present invention.

Fig. 4 is a plan view of a cartridge according to a second embodiment of the present invention.

Fig. 5 is a plan view of a case according to a third embodiment of the present invention.

Fig. 6 is a schematic structural diagram of the box body with the heat-conducting layer extension part according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1-6, the utility model discloses a self-heating cutlery box includes the box body, and the box body includes box body bottom 100 and box body lateral wall 200, and wherein box body lateral wall 200 is including being located the inboard inside wall 210 of box body and being located the lateral wall 220 in the box body outside, and box body bottom 100 is equipped with fretwork part (first fretwork part), in the first embodiment of the utility model, fretwork part is the elongated hole 300 that is located box body bottom 100, and in the second embodiment, fretwork part is two non-intersect circular ports 301 that are located box body bottom 100, and in the third embodiment, fretwork part is a plurality of evenly distributed's aperture 302 that is located box body bottom 100. The shape of the hollow portion (including the second hollow portion described below) is not limited to the solution disclosed in the above embodiment, and may be varied in many ways, for example, the shape, size and distribution of the holes may be varied. The hollowed-out portion is provided to allow heat to directly contact the heat conducting layer 400 (shown by dotted lines in fig. 2-6) when the bottom of the lunch box is heated, and to be rapidly transferred to the food to be heated through the heat conducting layer 400 with good heat conducting performance, so as to improve the heat conducting efficiency. Compared with the single plastic lunch box integrally formed in the prior art, the heating speed and the heating efficiency are obviously improved.

To further increase the heating rate and efficiency, the self-heating lunch box of the present invention further has an extended heat conduction layer, wherein the heat conduction layer 400 includes not only the portion fixedly connected to the box bottom 100, but also a portion 410 (shown by dotted lines in fig. 6) extending upward (i.e. in the opposite direction to the box bottom) along the box side wall 200, and the extended portion 410 is fixedly connected to the box side wall 200. Also, in the preferred embodiment, the thermally conductive layer 400 extends up to the middle of the case side walls 200, approximately one-half the height of the case side walls 200 (i.e., the case thickness). The extension portion 410 of the heat conductive layer 400 receives heat from the bottom 100 of the case from the heat conductive layer 400 and rapidly transfers the heat to the food located at the center of the lunch box, i.e., not only increases the heating area but also achieves a vertical cubic heating effect. Thus, although heat is supplied from the bottom 100 of the case, heat can be transferred to the bottom 100 and the peripheral sides of the case almost without loss by the heat conductive layer 400 and the extended portion 410 thereof, and the direction of heat transfer is optimized from bottom to top not only from bottom to top but also from the periphery to the center, naturally increasing the speed and efficiency of heating.

In one embodiment, because the case side wall 200 is divided into the inner side wall 210 and the outer side wall 220, when the entire heat conductive layer 400 is located at the inner bottom of the case, the extension portion 410 extends directly upward from the inner side wall 210, and the extension portion 410 directly contacts the food, the case side wall 200 does not need to be provided otherwise.

In another embodiment, when the entire heat conductive layer 400 is located at the outer bottom of the case, the extension portion 410 extends upward and closely to the outer sidewall 220 (410 is not shown in the drawings), the heat conductive layer 400 and the extension portion 410 form an external wrapping state for the case bottom 100 and the case sidewall 200, and it is necessary to provide a hollow portion (second hollow portion) on the sidewall of the case sidewall 200, which corresponds to the extension portion 410 of the heat conductive layer. The heat first reaches the extension 410 and then enters the interior of the box through the cutout in the side wall to heat the food. This embodiment is slightly inferior to the previous embodiment because of the added processing steps for the cassette side wall 200.

In another embodiment, the extension portion 410 of the heat conducting layer may extend to the top opening of the case, but the heat may not be a good embodiment because it is partially transferred to the food and thus the heat is not a good heat conduction efficiency.

The above technical solutions have fully utilized the heat from the bottom of the box body, so that at least the food in the lower half of the lunch box can be guaranteed to be fully heated. In order to further strengthen the heating effect, the utility model discloses a self-heating cutlery box's upper portion opening part also compound has the same or similar material of one deck and heat-conducting layer 400, and the opening of the cutlery box is directly sealed to this material, when in the open air, when the field usage, adopt two heating sources (for example the heating package commonly used among the prior art, heating bag etc.), box body below is arranged in to a heating source, box body top is arranged in to another heating source, because box body upper portion opening part also has good heat conductivility, the heat that comes from the heating source of arranging the box body top in also can be effectively conducted to the inside especially first half food of cutlery box downwards rapidly, the aforesaid heat conduction structure that has the box body bottom of extension 410 coordinates, can heat food in the whole cutlery box fast effectively. Equal lunch-box specification and food weight, self-heating cutlery box among the prior art will be suitable for edible temperature with food heating and need 10 minutes at least and be more of a specified duration even, and the utility model discloses a self-heating cutlery box only need 3 ~ 5 minutes can, improved heating efficiency by a wide margin.

The heat conduction layer 400, the extension part 410 thereof and the heat conduction material sealed at the upper opening of the lunch box are preferably aluminum foils with good heat conduction performance, and are respectively attached and sealed with the bottom of the box body, the side wall of the box body and the upper opening through a hot pressing technology. Select for use the box body material of high separation to make the utility model discloses a self-heating cutlery box can realize two years's food shelf life.

Claims (10)

1. Self-heating cutlery box, including the box body, its characterized in that, the box body includes the heat-conducting layer, the heat-conducting layer is fixed in the box body bottom, the box body bottom has first fretwork part, the heat-conducting layer with the edge laminating of first fretwork part.

2. A self-heating cutlery box as claimed in claim 1, wherein the heat conducting layer extends upwardly from the bottom of the box along the side walls of the box and is fixedly connected to the side walls of the box.

3. A self-heating cutlery box as claimed in claim 2, wherein the heat conducting layer is located at the inner bottom of the box and extends upwardly along the inner side wall of the box.

4. A self-heating cutlery box as claimed in claim 2, wherein the heat conductive layer is located at the outer bottom of the box and extends up the outer side wall of the box.

5. A self-heating cutlery box as claimed in claim 4, wherein the box side wall has a second hollowed out portion corresponding to a heat conducting layer extension extending to an outer side wall of the box.

6. A self-heating cutlery box as claimed in any of claims 2 to 5, wherein the heat conducting layer extends upwardly from the bottom of the box to the middle of the side walls of the box.

7. A self-heating lunch box as claimed in claim 1, wherein the upper opening of the box body is sealed by a heat conductive material.

8. A self-heating lunch box as claimed in claim 1 or 5, wherein the first and second hollow parts are one or more holes respectively.

9. A self-heating lunch box as claimed in claim 1, wherein the heat conductive layer is aluminum foil.

10. A self-heating lunch box according to claim 1 or 9, wherein the heat conducting layer is fixed to the bottom of the box body by means of heat pressing.

Images