Novel process gas cleaning system

13 October 2010 Manufacturing / Production Technology, Hardware & Services

SEHO Systems has redesigned the process gas cleaning system for its reflow ovens to reduce maintenance costs in electronics production.

The SEHO MaxiReflow is equipped with the latest cyclone technology. The system extracts the contaminated process gas from all heated zones, leads it through a cyclone and then directs the cleaned gas back to the heating area. The temperature inside the cyclone is controlled to allow optimum condensation.

The newest generation cleaning system features water-supported process gas cleaning. By injecting a small amount of water into the cyclone, both liquid and solid residues are washed off and led into an active carbon filter unit. This improves condensation of residues in the spray fog and provides an efficient washing down of residues inside the cyclone. As a result, the cyclone is kept cleaner, enabling longer maintenance intervals.

The entire unit is configured as a closed system, ie, the water is being filtered and pumped back into the cyclone, whereas the cleaned process gas is directed back to the last preheat zone. This ensures that no energy is wasted.

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