| 20100011722 | RESIDENCE CHAMBER FOR PRODUCTS OF COMBUSTION - A residence chamber for use in treating products of combustion is disclosed. The chamber comprises a first chamber, having a gas inlet and a gas outlet, and a baffle. The baffle is located in the first chamber part and is arranged so as to cause gas entering the chamber through the inlet to travel initially in a first helical path and subsequently in a second helical path. The second helical path is in a second opposed axial direction and is inside the first helical path. The gas is arranged to exit the first chamber part through the outlet. | 01-21-2010 |
