Vacuum OvenIt is a specialized equipment used in the laboratory, biopharmaceutical, and food industries for drying thermosensitive and easily oxidizable samples. By extracting air from the box to create a vacuum environment, the boiling point of the samples is reduced, and low-temperature drying is achieved to avoid the damage of high temperature to the activity or components of the samples. It is widely used in the drying treatment of samples such as biological products, drugs, and food additives.
The core of its working principle is "vacuum environment+low-temperature heating": the equipment extracts air inside the box through a vacuum pump, making the vacuum degree inside the box reach 0.095MPa or above. At this time, the boiling point of water or solvent is significantly reduced (for example, when the vacuum degree is 0.095MPa, the boiling point of water is about 35 ℃); At the same time, the heating plate inside the box slowly heats up (temperature range of room temperature+5 ℃ to 150 ℃) to provide vaporization heat for the sample. The vaporized steam is condensed or directly discharged by a vacuum pump to achieve sample drying. The digital temperature control and vacuum monitoring system displays parameters in real time to ensure the controllability of the drying process.
In terms of structural design,Vacuum OvenFocus on "sealing+temperature control accuracy". The box is made of stainless steel inner liner (304 or 316L), the outer shell is made of cold-rolled steel plate sprayed with plastic, and the middle is filled with insulation material; The box door is equipped with double-layer sealing strips and a vacuum gauge to ensure sealing (vacuum degree retention capacity: after turning off the vacuum pump, the vacuum degree drops by ≤ 0.005MPa within 1 hour); The heating plate adopts a zone heating design to ensure uniform temperature inside the box (temperature uniformity ≤ ± 2 ℃); Some models come with a timer function (0-999 minutes) that automatically shuts down when the time is up.
In application scenarios, its low-temperature drying advantage is significant: used in the field of biomedicine for drying vaccines and enzyme preparations, retaining biological activity; Used in the food industry for drying probiotics and fruit and vegetable powders to avoid nutrient loss; Used in the field of materials for drying polymer materials to prevent material deformation caused by high temperatures. Attention should be paid to operation and maintenance: Before placing the sample, check the sealing of the box door to ensure no air leakage; During the drying process, frequent opening of the box door is prohibited to prevent a decrease in vacuum degree; The vacuum pump needs to be replaced with vacuum pump oil regularly (once every 3 months); When not in use for a long time, it is necessary to keep the box dry to prevent rusting of the inner liner.