A hand-cranked heating lunch box

Abstract

The invention discloses a hand-cranking heating lunch box which belongs to lunch boxes and can be used for effectively solving a problem that meals in the lunch boxes are cold after a long time. The hand-cranking heating lunch box comprises a lunch box body and a heating device. The lunch box is characterized in that the heating device is positioned in and fixed with the bottom of a cavity body of the lunch box body; an input shaft end of a transmission device of the heating device is connected with a crank on the outer part of the lunch box body; an output shaft end of the transmission device of the heating device is connected with a rotary disc with a permanent magnet; and a heating plate is arranged on the upper end of the rotary disc. When the lunch box is used, the crank is rotated by hand and drives the rotary disc through the transmission device, the heating plate on the rotary disc heats to directly heat the meals on the heating plate, and the heating device has high eddy current heating efficiency and quickly heats.

Description

technical field [0001] The present invention relates to a lunch box, in particular to a hand-cranked heating lunch box. Background technique [0002] In order to facilitate people who go out to work, go to school, field workers, outdoor tourists, etc. to bring their own meals to meet the needs of meals, but because the food is stored in the lunch box for too long, it will cause the food to cool down, and the ordinary lunch box itself does not have a heating function. Many places do not have heating kitchen utensils such as portable power supply and microwave ovens, which brings troubles to people who need to go to work, go to school, field workers, outdoor tourists; for this reason, there is an urgent need for a portable lunch box that can be heated anytime and anywhere 201120551859.3 "Hand Heated Lunch Box", which uses hand crank to generate electricity, and then converts it into heat through electrothermal conversion to heat the food in the lunch box. The manual heating lu...

AI Technical Summary

Problems solved by technology

[0002] In order to facilitate people who go out to work, go to school, field workers, outdoor tourists, etc. to bring their own meals to meet the needs of meals, but because the food is stored in the lunch box for too long, it will cause the food to cool down, and the ordinary lunch box itself does not have a heating function. Many places do not have heating kitchen utensils such as portable power supply and microwave ovens, which brings troubles to people who need to go to work, go to school, field workers, outdoor tourists; for this reason, there is an urgent need for a portable lunch box that can be heated anytime and anywhere 201120551859.3 "Hand Heated Lunch Box", which uses hand crank to generate electricity, and then converts it into heat through electrothermal conversion to heat the food in the lunch box. The manual heating lunch box has many energy conversion steps, which leads to low conversion efficiency and the product is not easy to market. Promotion; Another example is that the "electromagnetic heating lunch box" with application number 200920291920.8 adopts an electromagnetic heating device, but the device needs a power supply at any time, which brings troubles to people who need to go out to work, go to school, field workers, outdoor tourists, etc.; for this reason, It is necessary to solve the problem of heating food with rice efficiently anytime and anywhere. This invention designs a hand-operated heating lunch box, which can conveniently heat food at any time.

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