AchieveChem DHG‑series blast drying oven, also called hot air circulation / forced air drying oven.
Desktop & vertical types, 36‑960L capacity, temperature RT+10℃‑300℃.
Mirror stainless‑steel inner chamber, imported high‑temp motor and PT100 sensor.
Suitable for lab, pharmaceutical, chemical, food and material aging test.
Custom size, voltage and explosion‑proof modification supported.
Contact us for factory quotation.
AchieveChem DHG‑Series blast drying oven, also known as hot air circulation oven / forced air drying oven, adopts forced hot‑air convection to deliver uniform high‑temperature drying. We supply desktop and vertical models with chamber volume ranging from 36L to 960L, supporting working temperature up to 300℃. Equipped with imported high‑temperature resistant motor, high‑precision PT100 sensor and mirror stainless‑steel inner liner. Widely used in laboratories, pharmaceutical, chemical, agriculture, environmental protection and industrial aging tests. OEM and custom specifications are available. Request your quotation today.
Key Features
Forced Hot‑Air Circulation System: Optimized air duct design ensures even temperature distribution inside the chamber and minimizes temperature gradient.
Premium Chamber Material: Mirror stainless‑steel inner liner, anti‑corrosion and easy to clean; anti‑rust spray‑paint outer shell for long service life.
Imported High‑temp Resistant Motor: Low noise and stable performance for continuous drying operation.
High‑precision PT100 Temperature Sensor: Accurate temperature detection; independent over‑temperature alarm and power‑off protection to guarantee operation safety.
Flexible Adjustable Shelves: Movable partition shelves allow users to adjust loading height for different samples.
Wide Temperature Coverage: Desktop & vertical models, working range RT+10℃‑250℃ / RT+10℃‑300℃ to meet diverse drying and aging‑test requirements.
Optional RS485 Communication Interface: Supports data recording and PC connection for laboratory data traceability.
User‑friendly Cabinet Design: CNC formed cabinet with observation window; door‑open fan stop protection; side opening for convenient circuit maintenance.
Customizable Service: Custom chamber size, voltage and special temperature requirements are supported.
working principle of blast drying oven
The working principle of a blast drying oven can be summarized into three main steps: heating, ventilation, and dehumidification.
Heating: The interior of the drying oven is usually equipped with heaters, which can be electric heaters or gas heaters. When the heater starts, it will convert electrical or gas energy into thermal energy, causing the temperature inside the box to rise. During the drying process, the heater will continuously provide thermal energy to maintain the temperature inside the drying box stable within the set drying temperature range. Ventilation: There is also a blower inside the drying oven, which is mainly used to generate strong air. When the blower is working, it will blow hot air into the box, causing the moisture on the surface of the wet object to quickly evaporate and take away some of the heat. In this way, the moisture inside the item will gradually be removed, achieving a drying effect.
Dehumidification: During the drying process, the moisture on the surface of the item will gradually evaporate, forming water vapor. In order to maintain the humidity inside the box within a certain range, a humidity control system is also installed inside the blast drying box. This system can detect the humidity inside the box and control the operation of the dehumidification equipment based on the set value. The dehumidification equipment can be a hygroscopic agent, dehumidifier, or dehumidification fan, etc. They can gradually reduce the humidity inside the box, ensuring that the items are completely dry within a certain period of time.
In summary, the working principle of a drying oven is achieved through three steps: heating, ventilation, and dehumidification. The heater provides heat energy to raise the temperature inside the box; The blower generates strong wind, blowing hot air into the box and taking away the moisture on the surface of the item; The dehumidification equipment controls humidity to reduce the humidity inside the box, ensuring that the items are completely dry. This working principle makes the drying oven an efficient and practical drying equipment.
If you need low‑temperature drying for heat‑sensitive material, please check our Vacuum Drying Oven product page.
The structural characteristics of the drying oven are mainly reflected in the following aspects:
Air duct structure: The drying oven adopts the principle of circular air wave simulation air circulation, which ensures the highly uniform and stable temperature of the inner container. Temperature safety device: The drying oven has an independently adjustable temperature safety device that can be adjusted according to user needs, providing a dual protection system and improving the safety factor of the system. High precision temperature sensor: The equipment adopts high-precision temperature sensors, such as the HONEY WELL PT100 three core sensor, which has small errors and can accurately detect internal temperature. Motor design: The drying oven usually uses imported motors, such as the NEISTER motor. This type of motor is resistant to high temperature and humidity, has low noise, and small swing amplitude, which is conducive to ensuring temperature uniformity inside the box. Mobile partition: In order to facilitate users to adjust the height of the partition according to their needs, the blast drying box is designed with a mobile partition, making use more user-friendly. High temperature resistant door switch: When the door is opened, the fan quickly stops, and this design prevents the internal temperature from rapidly dropping, thereby ensuring the drying effect. Box design: The box of the drying oven is usually processed and formed by CNC machine tools, with a beautiful appearance. The inner liner is made of high-quality mirror stainless steel plate, and the outer shell is sprayed with A3 plate, which enhances the durability and aesthetics of the equipment. Circuit system: The circuit system side adopts a gate opening, which is convenient for maintenance and repair. Insulation system: The insulation system uses ultra-fine glass fiber to fill the insulation area, and non-metallic high-temperature resistant materials are used for the connection parts of the inner and outer tanks, effectively reducing temperature conduction.
Product Application
1. Pharmaceutical & Chemical Laboratory
Drying glassware, chemical samples and raw material pretreatment. Recommended desktop small‑medium models: DHG‑9030A / DHG‑9070A / DHG‑9140A.
2.Food & Agriculture
Grain drying, herb sample processing and seed drying treatment. Medium‑large desktop or vertical models: DHG‑9240A / DHG‑9420A.
3.Research & Education Lab
Sample pretreatment, teaching experiment and material heat test. Compact desktop DHG‑9030A / DHG‑9035A for university labs.
4.Environmental Protection & New‑Energy Material
Sludge drying and new‑energy material heat treatment. Large‑capacity vertical models: DHG‑9620A, DHG‑9920A.
5.Industrial Aging Test
Aging test for plastic, rubber and fiber products. Choose high‑temperature series (‑300℃ suffix models).
Customization Service
As a professional blast drying oven manufacturer, AchieveChem provides tailor‑made service:
When using a blast drying oven, the following points should be noted:
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During the constant temperature process, the temperature is automatically controlled by the internal temperature controller in the box, without the need for manual management. But it is important to regularly check the operation of the equipment.
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Do not place the test sample too tightly or overloaded to avoid affecting the convection of hot air and drying effect.
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Flammable and volatile substances should not be placed in the drying oven to avoid accidents such as fires.
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After use, the power should be turned off promptly and the inside of the drying oven should be cleaned to keep it clean and dry.
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Temperature calibration: Regularly calibrate the temperature sensor of the drying oven to ensure the accuracy of temperature measurement. Especially during seasonal changes or when the equipment has not been used for a long time, calibration is even more necessary.
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Safe grounding: Ensure that the shell of the air drying oven is well grounded to prevent electric shock accidents caused by electrical faults.
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8. Wind door adjustment: Adjust the size of the air door reasonably according to the moisture level of the dry item and the required drying effect, in order to optimize air convection and drying efficiency.
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9. Avoid overload: Do not put too many items in the drying oven to avoid overloading and causing equipment overheating or damage.
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Maintenance: Regularly clean and maintain the air drying oven, including cleaning dust, checking the working status of heating elements and fans, etc. When not in use for a long time, unplug the power plug and put on a dust cover.
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Frequently Asked Questions
What is blast drying oven used for?
Blast drying oven, also known as hot air circulation oven, performs drying and high‑temperature aging test under normal pressure. It is widely used for lab sample pretreatment, food, chemical, agriculture and environmental industry for non‑heat‑sensitive samples.
What is the difference between blast drying oven and vacuum drying oven?
Blast drying oven works under atmospheric pressure with higher working temperature; vacuum drying oven works under vacuum for low‑temperature drying for heat‑sensitive materials.
What temperature can DHG‑series blast drying oven reach?
Standard DHG‑A series: RT+10~250℃; DHG‑A high‑temperature series: RT+10~300℃.
Can you customize blast drying oven?
Yes, we support custom chamber size, temperature, voltage and special functional modification.
What is the MOQ for standard DHG‑series?
MOQ:1 unit for standard model; bulk discount for large‑quantity orders.
Contact Us for Quotation & Technical Support
AchieveChem is a professional manufacturer of laboratory and industrial chemical equipment. We provide high‑quality blast drying ovens, professional technical guidance, competitive factory prices and perfect after‑sales service. If you have model selection, customization or purchasing needs, please feel free to contact us to get your free quotation and solution.
