Vacuum Heating Oven
The core of the vacuum heating oven is to first use a vacuum pump to remove the air in the box to form a low-pressure or even near-vacuum environment.
- Product Introduction
Working principle
The core of the vacuum heating oven is to first use a vacuum pump to remove the air in the box to form a low-pressure or even near-vacuum environment. Then, through the heating box wall or heating plate, the heat is transferred to the material by thermal radiation and heat conduction. Under vacuum conditions, the boiling point of water will be significantly reduced, which means that the moisture in the material can be quickly evaporated at a lower temperature and pumped out by the vacuum pump.
Heating method and drying power
Heating: The air is thin, and the convection heat transfer is greatly weakened, mainly relying on thermal radiation and heat conduction. Heat can act directly on the material or be transferred through the shelf.
Efficiency: Fast drying speed
Boiling point reduction: Under vacuum, the boiling point of liquids (such as water or solvents) is much lower than the boiling point under normal pressure. For example, water boils at 100°C under standard atmospheric pressure, but it may be quickly vaporized at 40-50°C or even lower under high vacuum.
Pressure difference power: There is a huge pressure difference between the inside and outside of the box, which is conducive to the migration and escape of moisture or solvents from the inside of the material to the surface.
Less oxygen interference: Reduces the obstruction of air to heat transfer.
Product features
Prevent oxidation: The vacuum environment has extremely low oxygen content, which can effectively prevent the material from being oxidized during the drying process and maintain the original color and quality.
Low-temperature drying, protect heat-sensitive materials: Rapid drying can be achieved at a lower temperature, which is particularly suitable for processing heat-sensitive and easily decomposable materials such as medicines, biological products, enzyme preparations, and certain foods, retaining their active ingredients to the maximum extent.
More thorough drying, good pore structure: Solvents or moisture are more likely to escape from the depths of the material, the residual moisture of the material after drying is low, and the original loose porous structure of the material can be better maintained.
Powder does not fly: Without air flow, powdered materials can be dried quietly and will not be blown away.
Easy to recover solvents: If the material contains valuable or harmful solvents, the vacuum oven can be combined with a condensation recovery device to easily recover the solvent.
Application areas
Pharmaceutical industry: Low-temperature drying of drugs (especially biological preparations, antibiotics, and Chinese medicine extracts).
Electronics industry: Dehumidification, drying, and curing of electronic components (such as capacitors, circuit boards, and LED chips) to prevent oxidation.
New chemical materials: Drying, degassing, and solvent removal of polymer materials, lithium battery materials, and fine chemical powders.
Food and health products: Low-temperature concentration and drying of heat-sensitive foods (such as dried fruits and vegetable powders that can maintain color and flavor), health products, and natural product extracts.
Scientific research experiments: Various studies on samples with special drying requirements (such as anaerobic, low temperature, and high purity).
Precision parts: Spot-free drying of precision metal parts after cleaning.
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