Freeze dryers can be divided according to different classification standards, mainly including the following types:
By specification:
Small freeze dryer: mainly used in colleges, laboratories, scientific research and other places, with small size, suitable for small batch sample processing. Common models include in-situ type, ordinary type, pressure cover type, multi-manifold type, etc.
Pilot freeze dryer: suitable for small batch production and intermediate testing, temperature control and function close to production equipment, often used in small production of scientific research institutes and enterprises.
Production freeze dryer: suitable for large-scale production, the equipment has a large freeze drying area, which can meet the needs of mass production. Common cabin types are round warehouse type and square warehouse type, which are used for freeze drying of food and biological products respectively.
By structure:
Bell jar freeze dryer: the freeze drying chamber and cold trap are separate upper and lower structures, the freeze drying chamber has no pre-freezing function, suitable for experimental freeze dryer, simple structure and low cost. In-situ freeze dryer: The freeze drying chamber and cold trap are two independent chambers. The material pre-freezing and drying process does not require manual operation. It is suitable for freeze drying of medicines and biological products and is the future development direction.
Classification by cabin:
Round cabin freeze dryer: mostly used for freeze drying in the food industry.
Square cabin freeze dryer: mostly used for freeze drying in biological products and medical pharmaceutical industries. The square cabin design has a higher overall cabin utilization rate.
Application areas: Freeze dryers are widely used in bioengineering, pharmaceutical industry, food industry, materials science and deep processing of agricultural and sideline products.
