Fuel economisation system and exhaust gas cleaning device - has built in ventilator fan and drive to counteract the burner draught

摘要

A device for economisation in the use of fuels and/or purification of the exhaust gases produced in heating devices or boiler installations which are intermittently heated by means of a burner. The device is built into the end of the smoke duct (2) or stack (3) of the burner. The device has a built in ventilator device (8) (fan) and other devices are provided to drive the fan (8) when the burner is in use. The fan is so attached that it suppresses or minimises the burner draught when in motion.