Microwave vacuum drying technology is a new type of microwave energy application equipment combined with microwave energy technology and vacuum technology. Its appearance has solved the problems left by traditional drying equipment, such as slow heat transfer, low efficiency, and difficult temperature control.
The reason why microwave vacuum drying equipment can have a better effect is that microwave can directly act on the material and heat it inside and outside. It does not need to transfer heat through convection or conduction, so the heating speed is fast, the drying efficiency is high, and the temperature control is easy. However, in the process of producing microwave vacuum freeze drying equipment, the most prominent technical problem is the problem of the discharge of low pressure gas: the gas in the vacuum state, when diluted to a certain extent, will produce high frequency discharge phenomenon when the energy is added to the outside world. Because the technology of producing this kind of equipment is very difficult, the equipment has not been promoted very well.
In general, microwave vacuum drying equipment is a new and high technology product which integrates various disciplines such as electronics, vacuum, mechanics, thermodynamics, program control and so on. It is based on the in-depth study of physical changes, internal and external heat and mass exchange and the process of water migration under vacuum conditions during the drying process. A new technology and a new technology. In the current production process, it has the advantages of high dry production, good quality, low processing cost and so on. It has gradually become an indispensable new technology in the industry.