Research electric hot blast drying oven

1、 Working principle and core design

Research electric hot blast drying ovenHeating the air through electric heating elements and using a fan to circulate hot air, achieving uniform drying or constant temperature treatment of the sample. Its core design revolves aroundTemperature control accuracyandUniformity of airflow distributionopen.

1. Temperature control system
Modern scientific research drying ovens are commonly usedPID self-tuning temperature control technologyReal time monitoring of temperature inside the box through sensors and dynamic adjustment of heating power. For example, when the temperature deviates from the set value, the system will automatically adjust the output power to reduce fluctuations. Some devices are also equipped withIndependent temperature limiting protectionCut off the power supply when the temperature exceeds the limit to avoid experimental risks.

2. Hot air circulation system
The interior of the box is designedMulti layer hot air channelThe fan evenly distributes the heated air to various areas of the workspace. Some models have passedWind speed regulation functionAdapt to different needs: High wind speed can accelerate the discharge of volatile substances, while low wind speed is suitable for samples that are sensitive to particles (such as powdered reagents).

3. Materials and Structure
Studios often use304 stainless steelMaterial, corrosion-resistant and easy to clean; Fill between the box and the studioUltra fine glass woolReduce heat loss. The design of the double-layer glass observation window ensures sealing and facilitates real-time observation of the sample status.

2、 Typical applications in scientific research scenarios

The flexibility of electric blast drying oven makes it a key equipment in multiple fields:

1. Sample pretreatment

• chemical analysisIn titration experiments, glassware needs to be dried at high temperatures to remove moisture interference.

• Biological researchCell culture dishes or PCR reaction tubes need to be sterilized and dried before use to ensure a sterile environment.

• Materials ScienceAfter the synthesis of nanoparticles, low-temperature vacuum drying is required to prevent aggregation.

2. Simulation of reaction conditions
In catalytic reaction research, a drying oven can simulate specific humidity conditions. For example, a certain research group needs to study the deactivation mechanism of catalysts under specific humidity, and achieve environmental control by adjusting the humidity module of the drying oven (which needs to be matched with a humidifier).

3. Industrial pre research experiments
Pharmaceutical companies often use drying ovens forSmall batch drug dryingVerify process parameters (such as the effect of temperature gradient on active ingredients) to provide data support for large-scale production.

questionIn which scenarios should strong wind disturbance from the drying oven be avoided?
answerWhen drying powdered biological samples, excessive wind speed may cause dust loss, and the fan needs to be turned off or switched to breeze mode.

3、 Selection and usage precautions

1. Temperature range and temperature control accuracy
In scientific research scenarios, some experiments require strict temperature control. For example, in protein crystallization experiments at a certain university, it is necessary to control temperature fluctuations within a low range and choose high-precision temperature control models.

2. Safety protection design

• Over-temperature alarmPrevent the risk of overheating caused by sensor malfunction.

• Door interlockAutomatically stop heating when opening the door to avoid burns.

• Gas emission interfaceWhen dealing with residual organic solvents, an external ventilation duct is required.

3. Key points of daily maintenance

• Regularly clean the condensation water on the top of the box (especially after long-term operation at high temperatures).

• Check the operation status of the blower motor to avoid foreign objects blocking the air duct.

• For long-term idle equipment, it is recommended to power on and run it without load for 1 hour every quarter to prevent mechanical parts from rusting.

4、 Key links in maintenance and calibration

1. Calibration process
Regularly calibrating temperature sensors is key to ensuring the reliability of experimental data. The laboratory can use standard thermometers for comparison or entrust professional institutions to complete calibration.

2. Performance degradation during long-term use
Heating elements and fans may experience aging after long-term operation, and attention should be paid to the phenomenon of decreased heating efficiency or weakened wind speed. For example, if the drying time is significantly prolonged, it may be necessary to replace the heating wire or clean the air duct.

3. Adaptive adjustment for special scenarios
For scenarios where dry and easily oxidizable samples are required, inert gas (such as nitrogen) can be introduced into the box and sealed to ensure that the gas does not leak.

5、 Comparison Table of Application Scenarios

Through reasonable configuration and operation,Research electric hot blast drying ovenThe laboratory can effectively improve the reproducibility and safety of scientific research experimentscrucialThe basic equipment.