Box Type Food Microwave Vacuum Drying Sterilizing Device
The microwave vacuum drying equipment is used in food, chemical,
pharmaceutical, agricultural and sideline products, small scale
processing and other special requirements and specialized research
and development of innovative products. The microwave output power
of the cabinet and the size of the box body are between the small
domestic microwave oven and the large industrial microwave
equipment, which can fill the blank of the application field of the
microwave energy at home and abroad. The machine adopts the new
technology of microwave energy supply and the new electrical
components. It has the characteristics of uniform power
distribution. Energy saving, energy saving and complete function.
1. Characteristics Compared with conventional microwave equipment:
1) Low temperature :
under one atmospheric pressure (101.3 kpa), the boiling point of
water is 100 °C.But under 0.073 of one atmospheric pressure(7.37
kpa), the boiling point of water is only 40 °C.It is on negative
pressure condition when using microwave vacuum device,material can
be processed under low temperature.So the quality of the material
can be guaranteed tremendously. The machine is especially suitable
for drying material which need to dry in the low temperature, such
as herbal extract,ginseng,ect.
2) Pressure :
In negative pressure environment with microwave vacuum
device,moisture evaporates faster in the lower temperature.
2. Compared with conventional vacuum drying equipment:
1) Penetration : because it is in vacuum situation when using conventional vacuum
drying equipment,heat cann't transfer in the form of convection and
can only conduct.So the heating speed is slow,drying time is long
and the energy consumption is excesive.However,Microwave vacuum
drying equipment adopts radiation way to transfere energy and it
heat wholly without any medium.Itavoids the above shortcomings.
2) Evenly : microwave heating is in and outside of the material at the same
time,the temperature difference is very small in and outside of the
material.So it is more evenly when drying materials,and the heating
efficiency is greatly increased.
3) Quickly : because of the penetration of the microwave and the radiation way
to transfere energy, materials is heated inside and outside at the
same time.Thus the drying speed is greatly improvedl.
The main use of microwave vacuum dryer:
1. Suitable for dying materials with high added value and
heat-sensitive character,such as agricultural and sideline
products,health products,food,medicine,fruit and vegetables,ect.
2. Can be used to dry or take off crystal water of herbal