Electric Heating Blower Constant Temperature Drying Oven

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

An electric thermal drum dryer is a heating chamber designed to generate heat using heating elements and to circulate air evenly throughout the drying compartment via a circulating fan. This ensures rapid, uniform drying. It is widely used in scientific research, industry, medical applications, and other fields for drying, baking, sterilization, and temperature testing.

Category Keywords

Type of equipment 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, over-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 (precision model: up to ± 0.1°C) [Reference value]

Temperature uniformity ± 2°C [Reference value]

Temperature resolution 0.1°C [Reference value]

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 drum 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°C~250°C

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

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

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

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

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

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IV. Structures and materials

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Place   Material / Design

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

Enclosure Spray-treated high-quality steel plate, rust-proof and aesthetically finished

Observation windows Large-area double glazing

Insulation layer Ultrafine glass fiber filling

Air turbine systems 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, over-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 cable is intact and that the grounding is reliable.

Ensure the chamber interior and exterior are clean and that there is no debris or impurities around the heating element.

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

Place the equipment on a level, 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 too high).

Turn on the drum switch to promote air circulation.

Load the material (spread evenly to prevent over-thick accumulation).

Monitor operating status through the observation window during operation.

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

6.3 ⚠️Important safety warnings

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Prohibited items   Explanation

Flammable and explosive items must not be placed in the drying chamber for heating to avoid the risk of explosion.

Volatile chemicals are strictly prohibited from being placed inside.

Excessive use is prohibited. Do not set a temperature higher than the device’s rated maximum temperature.

Unattended operation is prohibited. Regular checks (patrols) should be carried out during operation.

Do not open the door at high temperatures. Avoid opening the door during high-temperature operation.

VII. Selection recommendations

Select the temperature range based on the material characteristics: thermally sensitive materials should use a low-temperature type (< 100°C); for ordinary materials, select a 200°C class.

Select the chamber volume according to the load: consider the shape and size of the items, as well as the number of drum carriers.

Select the controller based on precision requirements: a display-type controller for general experiments; an intelligent program controller for precision experiments.

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

Allow sufficient clearance for heat dissipation: keep at least 30 cm from the wall on the surrounding sides and the rear of the chamber.

VIII. Maintenance and upkeep

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

Regularly inspect the heating components and the turbine operation.

Worn or damaged seal strips should be replaced in a timely manner.

For extended periods of non-use, disconnect power, allow the chamber to dry, and periodically energize the unit to dehumidify.