Lin changkun
The size of the lunch box is: 16cm×8cm× 10cm, which is very convenient to put into the schoolbag.
Sealing buckle of lunch box
This newspaper originated from a public welfare activity. Lin Changkun 20 13, majoring in industrial design in the School of Mechanical Engineering of Zhengzhou University, designed a "warm and reheated lunch box" because he loves to help children in poor areas have a hot lunch, and recently won the iF design rookie award in the international top design competition. It is reported that Lin Changkun has received the admission notice from St. Martin's College of Art and Design, which is the first time that a student majoring in industrial design at Zhengzhou University has been admitted to the design major of this world-renowned university.
Seeing that children in mountainous areas can't eat hot meals, he wants to help them.
When he was a freshman, Lin Changkun and his companions participated in a charity event for free lunch in mountainous areas, and learned that many children in mountainous areas could not eat hot meals, so he came up with the idea of helping them at that time.
"When I was a junior, I began to think about graduation design and further study, and decided to do it and help these children with my professional knowledge." Lin Changkun is from Quanzhou, Fujian. During the holiday, he went to his hometown mountainous area to investigate and found that many mountainous schools could not provide heating and insulation equipment because of poverty, so it was difficult for children to have hot meals. "The problem is common in the village, and children are in the growth stage. Eating bad meals has a great negative impact on their health and growth. "
After consultation, investigation and investigation, Lin Changkun finally designed this lunch box. From the appearance, this "warm and reheated lunch box" is no different from the ordinary snap-in lunch box, except that there is a heating module inside the lunch box, and there is an iron plate on the side of the module to connect the external button of the lunch box. Press the button, the heating module in the lunch box will generate heat and release energy to heat the food.
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 foil tin paper in turn. The biggest highlight of the design is the chemical substance filled in the module for heating-anhydrous sodium acetate. "
Lin Changkun said that many scenic spots sell self-heating instant rice, and there are also USB charging and heating lunch boxes on the market by using the principle that quicklime heats up when it meets water. These products are either expensive or have requirements for the use environment, and are not suitable for children in mountainous areas. He chose to use anhydrous sodium acetate because it is easy to change phase under pressure. "The so-called phase change means that a substance changes from one state to another when it is subjected to continuous changes of external parameters such as temperature, pressure and magnetic field. Press the button, the iron sheet protrudes inward, squeezing anhydrous sodium acetate, and the pressure increases, which will lead to a phase change, from liquid to solid, releasing heat to heat meals. By controlling the amount of anhydrous sodium acetate in the heating module, the heat released can be controlled. "
"After one use, just put the heating module in hot water until the solid melts into a liquid state, and then you can use it again." Lin Changkun said that compared with common heating materials such as iron powder and calcium carbonate, the biggest advantage of anhydrous sodium acetate is that it can be reused. "It is not only efficient and energy-saving, but also cheap. A warm and reheated lunch box costs less than 10 yuan. "
I intend to apply for a patent and want to cooperate with caring enterprises.
"My original intention was to help children in poor areas, fearing that patents would increase the cost of lunch boxes and increase their burden." Lin Changkun said that he didn't intend to apply for a patent for this design, but his thoughts have changed in the past two days.
After the news of the award spread in the school, many friends suggested that Lin Changkun apply for a patent:
"If you don't apply, although the cost will be reduced, it is difficult to guarantee that children in mountainous areas can really use it. After all, patents will not have much impact on the price of products. In addition, if you want to help your children, you can donate the money received by the patent. "
"Apply for a patent, make products as soon as possible, and standardize the operation. The better the product performance, the better it sells, the more talents it uses and the greater its social value. "
Now, Lin Changkun has received the admission notice from St. Martin's College of Art and Design in the UK. While busy with his studies and graduation project, he plans to apply for a patent in the future, cooperate with caring enterprises, 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. "Lunch boxes are widely used, except for mountain children, office workers and other people."