The vacuum freeze-drying of the freeze dryer is a drying method for the water-containing substances to be sublimated from a solid-state to a gaseous state after pretreatment, and then rapidly frozen at -30°C and in a vacuum environment to remove the moisture and preserve the substances. Dryers are widely used and frequently used, so whether they can be used normally is very important for enterprises. Long-term work will bring wear and tear to accessories, dust and other impurities covering the work. Let the dryer manufacturer share some cleaning principles.
The working principle of freeze dryer:
The process of liquid-solid → gas. During the freeze-drying process, the "liquid bridge" between the solute particles has been frozen into a "solid bridge", the relative position between the two particles has been fixed, and there is no surface tension at the gas-liquid interface between the two particles. With the continuous sublimation of the solvent, the "solid bridge" keeps decreasing, but the relative position between the two particles no longer changes until the "solid bridge" disappears completely.
When the evaporator of the indoor unit and the condenser of the outdoor unit are covered with dust, it will affect the dissipation of cold air and heat, resulting in a weakening of the cooling or heating effect, and electricity and time. When turned on, the bacteria in the machine will be directly blown into the indoor air, causing direct damage to the human body. After the drying machine is stopped in the hot summer, cleaning is neglected, so a large amount of dust, mites, pollen, lice and molds adsorbed on the vacuuming net begin to multiply. When used again in the next year, these germs, viruses, molds and dust are blown out by the dryer, often causing large-scale respiratory infections and allergic dermatitis.
The machine generally needs to be cleaned and maintained before use in summer or after use in autumn. To kill germs, ask a professional technician to clean it once with a cleaning solution.
According to the cleaning principles shared by the above freeze dryer manufacturers, the normal operation of the equipment can be guaranteed after a period of use.
