Self-insulation multipurpose lunch box

Abstract

The invention provides a self-insulation multipurpose lunch box, which comprises an inner shell, an intermediate shell and an outer shell. The upper part of the outer shell is provided with an upper cover for sealing the cavity of the inner shell. A spaced annular inner chamber is designed between the inner shell and the outer shell. Upper parts of the intermediate shell and the outer shell are fixedly connected through an annular inner connection side. Inner outlet lower holes which are uniformly distributed circumferentially along the center line of the inner shell are processed on the innerconnection side. Upper parts of the inner shell, the intermediate shell and the outer shell are provided with a control cover capable of rotating relative to the outer shell. Inner outlet upper holeswhich are corresponding to the inner outlet lower holes are designed on the control cover. When the inner outlet upper holes and the inner outlet lower holes are corresponding to each other up and down, the spaced cavity between the inner shell and the intermediate shell is communicated with the outer side of the control cover. The lunch box of the invention also can be used as a pan, is convenient for cooking food in the open air, and is also convenient for heating food in the inner shell. Thereby, the lunch box is more convenient to use in the open air.

Description

technical field [0001] The invention belongs to the technical field of lunch boxes, and in particular relates to a self-insulating multipurpose lunch box. Background technique [0002] A lunch box is a box specially used to hold meals, also known as a bento box. The interior of the lunch box is designed with a cavity for short-term storage of food. In order to ensure the quality of food and the taste of food, the lunch box used in winter usually needs to design a special insulation structure. In the specific design, the shell of the lunch box is often designed with a double-layer or multi-layer structure. Now the lunch box is often designed with a special The electric heating structure is used to ensure the temperature inside the lunch box to realize the heating of the lunch box. However, when the electric heating structure is used, a power supply is required to provide energy. Using a mobile power supply as a heating source is convenient for the movement of the lunch box,...

AI Technical Summary

Problems solved by technology

However, when the electric heating structure is used, a power supply is required to provide energy. Using a mobile power supply as a heating source is convenient for the movement of the lunch box, but the energy density of the mobile power supply is low. When it is necessary to ensure a sufficient heat source, the lunch box is too heavy and inconvenient. Portable, and the use of the power supply is relatively harsh, it is inconvenient to use in rainy and snowy days in the wild

[0003] When people survive in the wild, they need to heat water or food, and many instant foods also need to be heated. When heating food in the wild, the open-air environment exposes the heating structure to the outside, and the fuel usage efficiency is low. At the same time, due to the external wind, the flame is difficult to maintain, easy to extinguish, and it is inconvenient to heat

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