Thiết kế, chế tạo tủ cấp đông phục vụ sấy thăng hoa đông trùng hạ thảo và thủy sản

Abstract

This article presents the results of a research on manufacturing small-capacity freezers for the freeze-drying process of cordyceps militaris and high-value seafood products. The research results have manufactured a freezer with basic parameters: productivity reaches 1 kg/batch, freezing environment temperature reaches -50 ± 1^oC, and air speed can be adjusted from 1 to 5m/s. The material temperature is also measured and monitored throughout the freezing period. In addition, the freezer is equipped with a control system for easy operation and convenient control of temperature and air speed according to the required modes. Experimental results show that this freezer is suitable for freezing many food types of freeze-drying processes.