Seven characteristics of tunnel microwave equipment

Tunnel microwave equipment is different from traditional drying methods in that its heat conduction direction is the same as that of water diffusion. Compared with the traditional drying method, it has the advantages of large drying rate, energy saving, high production efficiency, uniform drying, clean production, easy automatic control and improved product quality.

Since the microwave is controlled to work in the heating cavity and the waveguide made of metal, the tunnel type microwave device has almost no microwave leakage, no radioactive residual and harmful gas emission, and the tunnel type microwave device has less heat dissipation, less noise, and greatly improved. Work environment and labor intensity of workers.

1, short time, fast

Conventional thermal drying sterilization transfers heat from the surface of the object to the inside through heat conduction, convection or radiation. It often takes a long time for the inside of the object to reach the desired dryness and sterilization temperature. The medium consists of polar molecules and non-polar molecules. Under the action of electromagnetic fields, these polar molecules are shifted from the original random distribution state to the polarity according to the polarity of the electric field. Under the action of high-frequency electromagnetic fields, these orientations are constantly changing according to the frequency of the alternating electromagnetic, which causes the molecules to move and rub each other to generate heat. At this time, the field energy of the alternating electric field is converted into thermal energy in the medium, so that the temperature of the medium is continuously increased, so the microwave heating is the dielectric material itself depleting the electric field energy and generating heat. Therefore, the microwave heating treatment time is greatly shortened, and under a certain power density intensity, generally only a few tens of seconds and a few minutes can achieve satisfactory results.

2, low temperature drying sterilization to maintain nutrients

Microwave has the thermal effect of rapid heating and non-thermal effect double sterilization, compared with conventional thermal drying, sterilization can achieve the desired drying and sterilization effect at relatively low temperature and short time. Can retain more food nutrients and color, fragrance, taste, shape and other flavors.

3. Saving energy

The microwave energy conversion efficiency is high, generally above 70%. The microwave directly treats the food, and the heating box itself is not heated, so there is no additional heat energy loss, so energy saving.

4, even and thorough

Conventional thermal drying and sterilization are started from the surface of the material and then transferred to the inside of the material by heat conduction. There is a temperature difference between the inside and outside of the material, and the internal and external drying and sterilization effects are poor. In order to maintain the flavor and shorten the processing time, the internal temperature is not sufficient to affect the drying and sterilization effects. This phenomenon can be improved by increasing the processing temperature, however, this causes the color, fragrance, taste, shape and the like of the surface of the article to be degraded. The microwave has the penetrating property, and the surface and the interior simultaneously act to ensure that the internal and external temperatures together achieve the required value, so the drying and sterilization are uniform and thorough.

5, easy to control, easy to achieve automated production

The microwave food drying and sterilizing treatment equipment is simple in operation, easy to control, has no thermal inertia, can be processed according to different food process specifications, reduces production operators, and reduces production costs.

6, simple equipment, advanced technology

Compared with conventional sterilization, microwave equipment does not require boilers, pipeline systems, coal yards, and transportation vehicles. As long as it has basic water and electricity conditions, there are no special requirements for the plant, and the investment is small and the effect is quick.

7, improve working conditions, save floor space

The tunnel type microwave equipment has no high temperature, no heat, no heat itself, and no heat radiation. It can greatly improve working conditions, and the equipment is compact in structure and saves plant area.