Patent ID: 7753997

Claim:
A cleaning device for process gases that is configured to generate clean process gas from contaminated process gas in a reflow soldering system, comprising: a cleaning chamber comprising first and second series-connected modules, configured to have different operative principles of deposition, which are connected one after the other in series, wherein the first series-connected module comprises, a cleaning liquid configured to clean the contaminated process gas, said cleaning chamber allowing the contaminated process gas to flow therein via a second series-connected module and allowing the cleaned process gas to flow therefrom via a discharge line; a first deposition wall having a first surface, the surface being configured to receive a film of the cleaning liquid and being configured to be an outer wall of the cleaning device; and a second deposition wall positioned centrally within the cleaning chamber and having a second surface facing the first surface, the second surface being configured to receive another film of the cleaning liquid; and wherein the second series-connected module comprises, a bath comprising the cleaning liquid, and a supply line coupled below a liquid level of the bath and configured to allow the contaminated process gas to flow therein and rise upwards in bubbles in the bath.