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Among the many drying devices, the industrial vacuum drying oven has a wide range of applications in various fields due to its unique advantages. However, to allow it to fully function, ensure safe usage, and prolong its service life, it is particularly important to have an in-depth understanding of its key points for purchase and its environmental requirements.
Temperature Range and Accuracy
When purchasing an industrial vacuum drying oven, the temperature range and accuracy are key factors. The suitable temperature range should be determined based on the specific needs of the experiment or production. For instance, certain biological samples require specific low-temperature ranges, while material processing might demand high temperatures.
Temperature control accuracy also impacts the quality of results. High precision ensures minimal temperature fluctuation, making the drying process even and stable, and avoiding sample damage or poor drying effects due to temperature deviations. Generally, an accuracy range of ±0.1°C to ±1°C should be chosen as per requirements.
Body Material and Structure
Regarding material, stainless steel is widely used for its excellent corrosion resistance, high strength, and ease of cleaning; special alloy materials might be needed for specific acid or alkaline environments. Structurally, a well-designed inner chamber should facilitate easy placement and removal of items while ensuring uniform heating. The external structure must be robust, with tight sealing between the door and the body. Hinges and other components should be durable. The overall design should promote heat dissipation and routine maintenance, extending the equipment's lifespan.
Heating Method and Power
Common heating methods include hot air circulation and electric heating plates. Hot air circulation ensures good heating uniformity and quickly brings the internal temperature to a consistent level, while electric heating plates heat up quickly and efficiently. The power should match the volume of the chamber and heating requirements. Insufficient power leads to slow temperature rise, affecting drying efficiency, while excessive power may cause local overheating or energy waste.
Vacuum System
The vacuum system is the core part of the industrial vacuum drying oven. The performance of the vacuum pump is crucial; its pumping speed determines how quickly the required vacuum degree is reached. For rapid drying processes, a high pumping speed vacuum pump can quickly create a vacuum environment. Vacuum stability affects the reliability of the drying process, with minimal fluctuation ensuring items are dried under stable low pressure.
Additionally, the vacuum system needs to be well sealed to prevent air leakage, which could decrease the vacuum degree. It should also have vacuum degree detection and regulation functions for controlling the vacuum environment inside the chamber.
Safety Performance
The safety performance of the industrial vacuum drying oven cannot be overlooked. Over-temperature protection prevents high-temperature hazards due to temperature control failures by automatically cutting off the heat source when the temperature exceeds the upper limit. Over-pressure protection avoids damage or even explosion of the chamber due to abnormal pressure increases, ensuring operation within a safe pressure range.
Leakage protection effectively guards against electric shock risks to operators. Additionally, a safety lock design on the chamber door prevents it from being accidentally opened during operation, avoiding harm from hot air or the vacuum environment to the user, ensuring the safe use of the equipment.
Temperature and Humidity
The use of an industrial vacuum drying oven requires certain environmental temperature and humidity conditions. The ideal indoor temperature should remain relatively stable, typically between 5°C and 35°C. High temperatures might affect the equipment's heat dissipation and electrical performance, while low temperatures might impede the operation of some components.
Relative humidity should generally be between 30% and 80%. High humidity can cause rusting of metal parts and short circuits, while low humidity can create static electricity, interfering with normal operation or damaging electronic components.
Placement Space
The choice of placement space for the industrial vacuum drying oven is crucial. There should be ample space around the equipment to facilitate installation and maintenance, with at least half a meter of space on all sides for repair personnel to operate and for ventilation. The placement area must ensure good ventilation to prevent heat accumulation, which could affect the equipment's lifespan and performance.
It should be kept away from heat sources like large heating equipment and direct sunlight areas, as well as strong magnetic sources like large motors or transformers to avoid interference with normal operation.
Power Supply Conditions
The industrial vacuum drying oven has specific requirements for power supply conditions. The power supply needs to be stable and reliable, with voltage fluctuations generally controlled within ±10%, as too much fluctuation may damage electrical components or cause operational anomalies. Good grounding protection with a grounding resistance not exceeding 4 ohms is essential to prevent electric shock hazards during leakage.
Additionally, the power capacity should match the equipment's power demand to avoid tripping or overheating of circuits due to overloading, ensuring safe and continuous operation of the equipment.
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