The cover of Lin Changkun’s design work, the photo of the child in the picture comes from the Internet. Among them, the main English meaning is: In many mountainous areas in China, children cannot have a hot lunch for various reasons. Heated lunch boxes use chemical principles and combine the living characteristics and actual needs of children in mountainous areas to solve this problem at a low cost.

Lin Changkun

The size of the lunch box is: 16cm×8cm×10cm. It is very convenient to put in a school bag

The sealing buckle of the lunch box

This newspaper The news originated from a charity event. Because of his love to help children in poor areas eat hot lunches, Lin Changkun, a 2013 industrial design major at the School of Mechanical Engineering at Zhengzhou University, designed a "Warm reheated lunch box", which recently won the international award. Top design competition iF Design Rookie Award. It is reported that Lin Changkun has now received an admission letter from Saint Martins College of Art and Design in the UK. This is also the first time that an industrial design student from Zhengzhou University has been admitted to the design major of this world-renowned institution.

Seeing that children in mountainous areas were unable to eat hot meals, he wanted to help them

When he was a freshman, Lin Changkun and his companions participated in a public welfare activity for free lunches in mountainous areas and learned that many children in mountainous areas Since they couldn't afford hot meals, the idea of ??helping them came up.

“In my junior year, I began to think about graduation projects and further studies, and decided to do it and use my professional knowledge to help these children.” Lin Changkun is from Quanzhou, Fujian. During the holidays, he went to the mountainous area of ??his hometown to investigate and found out Due to poverty, many schools in mountainous areas do not have the conditions to provide heating and insulation equipment, making it difficult for children to eat hot meals. "This problem is common in villages. Children are in the stage of growing up, and not eating well has a great impact on their health and growth." Big negative impact.”

After multiple consultations, research, and inspections, Lin Changkun finally designed this lunch box. From the appearance point of view, this "Warm reheated lunch box" is no different from an ordinary buckle lunch box. However, there is a layer of heating module inside the lunch box, and there is an iron piece on the side of the module to connect the outside of the lunch box. button. Press the button and the heating module in the lunch box will generate heat and release energy to heat the meal.

A reheated lunch box costs less than 10 yuan and can be reused

“The materials of the heating module are polyester film, aluminum foil, and tin foil. The biggest highlight of the design is the filling inside the module. The chemical substance used to generate heat is anhydrous sodium acetate. ”

Lin Changkun said that many tourist attractions sell self-heating instant rice, which uses the principle of quicklime generating heat when exposed to water. There are also USB rechargeable heating lunch boxes on the market. These products are either high in cost or require environmental requirements, and are not suitable for children in mountainous areas. The reason why he chose to use anhydrous sodium acetate was because of the fact that this substance is prone to phase change under pressure. "The so-called phase change means that a substance changes from one state to another when it is subject to continuous changes in external parameters, such as temperature, pressure, magnetic field, etc. When the button is pressed, the iron piece bulges inwards, and anhydrous acetic acid When the sodium is squeezed and the pressure increases, it will undergo a phase change from liquid to solid and release heat to heat the food. By controlling the amount of anhydrous sodium acetate in the heating module, the heat released can be controlled. ”

“After using it once, you only need to put the heating module into hot water until the solid melts into a liquid, and then it can be used again.” Lin Changkun said that compared with common heating materials such as iron powder and calcium carbonate, water-free The biggest advantage of sodium acetate is that it can be reused. "It is not only efficient and energy-saving, but also low-priced. The cost of a Warm reheated lunch box is less than 10 yuan."

Plan to apply for a patent and want to cooperate with caring companies

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“My original intention is to help children in poor areas. I am worried that patents will increase the cost of lunch boxes and increase their burden.” Lin Changkun said that he originally did not plan to apply for a patent for this design, but in the past two days, he has had some ideas Change.

After the news of the award spread in the school, many friends suggested that Lin Changkun apply for a patent:

“Although the cost will be reduced if you don’t apply, it is difficult to ensure that children in mountainous areas can really use it. Yes, after all, patents will not have much impact on the price of the product. In addition, if you want to help children, you can donate the money you receive from the patent."

"Apply for a patent and make products as soon as possible. Operation, the better the product performance, the better it sells, the more talents will be used, and the greater the social value will be."

Now, Lin Changkun has received the admission notice from Saint Martins College of Art and Design in the UK. While he is busy with his studies and graduation project, he plans to apply for a patent in the future, cooperate with caring companies, and put it into the market as soon as possible so that children in mountainous areas can have a hot lunch as soon as possible. “The lunch boxes are widely used, not only for children in mountainous areas, but also for office workers and other people.

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