Draught control device for a chimney

摘要

A draught control device for a chimney which is connected to a firing installation such as heating boiler, hot-water boiler or the like and has an opening (22) for secondary air which can be closed by a rotary flap (23) consists of a housing (10) which is provided with an inlet connection piece (15) and an outlet connection piece (16) for the smoke gases arising during combustion and with the opening (22) for the secondary air. This opening is arranged on the upper side of the housing (10), the rotary flap (23) being mounted rotatably inside the opening (22) with a horizontal axis. <IMAGE>