A lunch box for heating food with hot water
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 徐进
- Publication Date
- 2018-01-19
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to the field of daily necessities, in particular to a lunch box for heating food with hot water. Background technique
[0002] The heat preservation lunch boxes, heat preservation pots and electric heating lunch boxes commonly used now realize the function of heat preservation or heating of food through the heat preservation characteristics of the material itself or by charging the heat generating material, but the above methods have the following disadvantages:
[0003] (1) If the heat preservation is carried out through the heat preservation characteristics of the material itself, the heat preservation time is limited and cannot be reheated. At the same time, the requirements for the heat preservation characteristics of the material are high, and the production cost is high;
[0004] (2) For heat preservation or heating by charging heat-generating materials, the demand for power supplies greatly limits the scope of use, and the ...