Abstract

The invention consists in a cover for a chimney, the cover comprising: a housing adapted to surround at least an upper end of a chimney, the housing having an expansion area for receiving emissions from the upper end of the chimney; a diffuser for diffusing the emissions from the upper end of the chimney into the expansion area; at least one air inlet for introducing air into the expansion chamber; at least one outlet for enabling air or emissions to be exhausted from the expansion chamber; wherein the housing is adapted such that emissions exiting the upper end of the chimney are.diffused and expanded into the expansion chamber and a reduced pressure is created within the housing for drawing emissions from the upper end of the chimney into the expansion chamber.

IPC Classes  ?

• E04H 12/28 - Chimney stacks, e.g. free-standing, or similar ducts
• F23J 13/00 - Fittings for chimneys or flues
• F23J 99/00 - Subject matter not provided for in other groups of this subclass
• F23J 11/00 - Devices for conducting smoke or fumes, e.g. flues
• F23J 13/08 - Doors or covers specially adapted for smoke-boxes, flues, or chimneys
• F23J 11/12 - Smoke conduit systems for factories or large buildings
• F23J 15/00 - Arrangements of devices for treating smoke or fumes