Electric Heating Blower Constant Temperature Drying Oven

An electric thermal drum dryer uses heating elements to generate heat and a circulating fan to evenly distribute air inside the box for rapid, uniform drying. It is used in scientific research, industry, medical and other fields for drying, baking, sterilization, and temperature testing.

An electric thermal drum dryer is a device that generates heat via heating elements and circulates air evenly inside the chamber using a circulating fan, enabling rapid and uniform drying. It is widely used in scientific research, industrial production, medical applications, and other fields for drying, baking, sterilization, and temperature testing.

Category Keywords

Equipment Type Electrothermal drum dryer; Electrothermal constant-temperature drum dryer (precision dryer); High-temperature oven

Core Functions Drying, baking, sterilization, temperature testing, heat treatment, dehydration drying

Technical Features Hot-air circulation, intelligent temperature control, timing function, temperature-limit alarm, PID self-tuning

Material Features Stainless-steel inner lid, spray-treated steel enclosure, double-glazed glass observation window

Safety Features Independent temperature-limit alarm, fan stop protection, ultra-high-temperature protection

III. Main Technical Parameters

3.1 General technical parameters

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Parameter item     Specifications range

Temperature range RT + 10 °C ~ 200 °C / 300 °C (some models up to 500 °C, 800 °C, 1200 °C)

Temperature fluctuation ± 1 °C (up to ± 0.1 °C for the precision model)

Temperature uniformity ± 2 °C

Temperature resolution 0.1 °C

Timing range 1 ~ 9999 minutes

Supply voltage AC 220V / 50Hz (380V for some high-power models)

Heating power 2kW ~ 4.5kW (depending on model)

Two carriers (standard; each carrier supports approximately 15 kg)

3.2 Common model specifications (units: mm)

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Model     Internal size     External size     Temperature range

DHG-9030A 340×325×325 625×510×490 RT+10℃~250℃

DHG-9070AD 450×400×450 740×580×630 RT+10℃~250℃

DHG-9140AD 550×450×550 830×650×730 RT+10℃~250℃

DHG-9240AD 600×550×650 880×770×930 RT+10℃~250℃

KLG-9020A 300×300×300 410×400×640 RT+10℃~200℃

KLG-9070A 410×410×410 525×520×750 RT+10℃~200℃

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IV. Structures and Materials

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Component     Material / Design

Inner tank Mirror-finish stainless steel (SUS304), argon arc welding, or zinc plating

Enclosure High-quality steel plate, spray-treated for rust resistance and improved appearance

Observation window Large-area double glazing

Insulation layer Ultrafine glass fiber filling

Air-circulation (turbine) system Imported original high-temperature turbines + optimized wind-tunnel design

Control system Smart LCD program controller (optional; 10–30 programming steps)

Safety protection Independent temperature-limit alarm system, fan stop switch, ultra-high-temperature protection

V. Application Areas

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Industry application scenario     Typical temperature

Scientific / laboratory Sample drying, sterilization, temperature testing   60 °C – 200 °C

Electronics / semiconductors Component drying, aging testing, moisture-proof storage   50 °C – 150 °C

Chemical / new materials Raw material drying, curing, heat treatment   80 °C – 300 °C

Food / medicine Dehydrated drying, medicinal drying, food processing   40 °C – 120 °C

Hardware / electroplating Workpiece drying, oil treatment, surface treatment   100 °C – 250 °C

Biological experiments DNA sample drying, dish sterilization   60 °C – 120 °C

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VI. Operational Highlights and Precautions

6.1 Pre-use preparation

Check that the power line is intact and that grounding is reliable.

Ensure the chamber is clean inside and outside and that there are no impurities around the heating element.

Check that seals are intact and that the door can be fully closed.

Place the equipment on a flat, well-ventilated surface, away from flammable and explosive materials.

6.2 Standard operating procedures

Turn on the power and switch on the power switch.

Set the operating temperature (the initial temperature should not be set too high).

Turn on the drum switch to promote air circulation.

Load the material (spread it evenly to avoid excessive accumulation thickness).

Monitor the operation through the observation window.

When drying is complete, switch off the heating and wait until the temperature drops below 60 °C before removing the samples.

6.3 ⚠️ Important security warnings

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Prohibited items / Explanation

Flammable and explosive items must not be placed inside the drying chamber for heating to avoid explosions.

Volatile chemicals are strictly prohibited from being loaded.

Excessive use is not allowed. Do not set a temperature above the device’s rated maximum.

Never leave the unit unattended. Regular checks/patrols should be conducted during operation.

Do not open the door at high temperatures. Avoid opening the door when the chamber temperature is high.

VII. Selection Recommendations

Select the temperature range according to the material characteristics: use a low-temperature type (< 100 °C) for thermally sensitive materials; select a 200 °C setting for ordinary materials.

Select the working volume based on the load: consider the shape and size of the items and the number of carriers.

Select the controller based on precision requirements: display-type controllers for general experiments, and intelligent program-type controllers for precision experiments.

Select materials based on the operating environment: for corrosion-prone environments, stainless-steel enclosures are recommended.

Leave sufficient clearance for heat dissipation: not less than 30 cm from the wall on the surrounding sides and the rear of the chamber.

VIII. Maintenance

Clean the interior after each use until the chamber is completely cooled.

Regularly check the heating components and the operation of the turbines.

Replace any aged or damaged sealing strips promptly.

When the unit will not be used for an extended period, disconnect power, dry the chamber, and turn on electricity periodically to dehumidify.