Design of Refrigerating and Quick Freezing Equipment Based on Liquid Nitrogen Technology

With the improvement of people's living standards, it pays more attention to nutrition and quality of food demand, Diversification of consumption patterns, resulting in food preservation has higher requirements. With the extension of the highway, road transport is also developed. Fresh food as an important daily food category, with proper refrigeration technology, suitable industrial refrigeration products, Reducing the degree of corruption of fresh food, it is not only related to food safety, but also reducing the waste of resources and reduce the loss of business, this is one of the important measures, in order to ensure that the company's economic. Based on the fresh frozen food refrigeration technology application status will be the rapid development of fresh food refrigeration technology, this paper designs Refrigerating and Quick Freezing Equipment Based on Liquid Nitrogen Technology, including visual design, structure design, safety design, control model design, PID algorithm design.