Clean Hot Air Tunnel Oven

Dingfeng's Easy-maintainable Clean Hot Air Tunnel Oven is characterized by its unique downward suction purification circulation system. The hot air, after passing through the high-temperature and efficient air filter, is pressurized and evenly distributed over a 700-millimeter width of the conveyor belt, ensuring that lightweight substrates and printed materials remain in perfect position without drifting or moving. Coupled with Delta PLC and analog output module, it can achieve rapid heating, providing a strictly controlled and oxide-free environment for sensitive electronic green components.

Main technical parameters

Product Features

Our drying machine Clean Hot Air Tunnel Oven meets the stringent air purity standards of the 3C industry. Maintaining cleanliness in tunnels up to 8000 mm long requires proactive particulate management measures, culminating in a proprietary belt self-cleaning device at the entrance. It utilizes a flexible, adhesive roller that rotates alongside a high-temperature Teflon mesh belt, capturing minute dust and fibers before they enter the heated area. Combined with a mirror-finish stainless steel internal structure and 120K aluminosilicate insulation, this prevents particulate shedding and gas release.

Equipment dimensions

Step-by-Step Startup Protocol

1.Safety Clearance: Inspect the intake for foreign objects and ensure the discharge zone is clear of residual products.
2.Power Initialization: Engage the main isolation switch within the control cabinet to energize the system.
3.HMI Activation: Toggle the master power switch on the operation panel to boot the high-definition touchscreen.
4.Conveyor Calibration: Once the HMI is active, initiate the Teflon Mesh Belt drive. Verify the transport direction and set the frequency (Baking Time) via the digital interface.
5.Atmosphere Management: Activate the primary Circulation Fans, followed by the VOC Exhaust and Forced-Air Cooling units (or simply utilize our "One-Touch Start" macro).
6.Thermal Ramp-up: Sequentially engage the heating zones. Once the PID system signals "Steady State" (Constant Temperature), your precision batch is ready for loading.

Standardized Shutdown Procedure (System Protection)

1.Clearance Audit: Verify that the entire 8-meter tunnel is free of processed materials.
2.Thermal De-activation: Systematically power down the heating arrays to initiate the cooling phase.
3.Ventilation Overrun: Gradually deactivate the circulation fans, followed by the exhaust and cooling blowers (available via the "One-Touch Close" function to prevent heat soak).
4.Transport Stop: Once the chamber has cooled to safe levels, disengage the conveyor belt drive.
5.System Power-down: Switch off the power supply of the control panel to complete the entire operation process, and ensure that the Sanitary Tunnel Oven is in a safe state before it is put into use in the next shift.

How to use it properly?

To maintain the peak performance of your Dingfeng Clean Hot Air Tunnel Oven and ensure a zero-harm working environment, all operators must strictly adhere to the following safety protocols:

1.Electrical Validation: Before initial power-on, conduct a full inspection of the primary circuitry. Verify that all phases (Live/Neutral/Ground) are correctly terminated and that the Schneider/OMRON control components function as intended.
2.Abnormal Diagnostics: Should any irregularity (unusual noise, vibration, or thermal drift) occur, initiate an immediate Emergency Stop and perform a technical diagnostic before restarting.
3.Circuit Protection: To prevent short circuits or damage to the Delta PLC motherboards, never interact with the touchscreen or physical buttons with wet hands.
4.Environmental Control: Keep the equipment area dry and away from water sources. Prolonged exposure to high humidity can compromise the internal insulation and electrical pathways.
5.Idle Maintenance: If the tunnel oven remains idle for extended periods, it should be powered on periodically to maintain the integrity of the electronic components and extend the overall service life.
6.Pneumatic Lock-out: During the heating cycle or while the furnace is at operational temperature, strictly prohibit the activation of the cylinder lift buttons to prevent severe thermal burns.
7.Mechanical Clearance: Ensure all hands and foreign objects remain clear of the Teflon mesh belt, drive chains, and rotating impellers during operation.
8.Cabinet Security: The electrical distribution cabinet must remain locked while energized. Only certified electricians are permitted to access the internal SCR and PLC modules to prevent electrical shock.
9.Combustion Hazards: It is strictly forbidden to process flammable, explosive, or highly volatile materials not specified in the initial design protocol.
10.Ventilation Integrity: Always ensure the VOC exhaust ports are unobstructed and correctly interfaced with your factory’s ventilation system to prevent gas accumulation.