What good is forge from the point of view of the Stoker? Of course, the “blower” to burn any fuel to the ground. But if someone dares to apply Gornova blast in his home oven, the smoke, who will climb from all cracks, quickly forced to abandon a quick decision. Not the best way to behave of an air injection system and the boiler. Especially where a low calorie fuel is used.
Confirmation of this for me, for example, is the school boiler room, where, I remember, adored by all the boys uncle Michael, including the blower, was forced to leave the boiler room: frenzy a lot, but a fever that is called into question.
Re-faced in adulthood with problems of boilers, I came to the conclusion that in order to enhance combustion is not necessary to pump air into the furnace, but rather to actively remove it (or rather — furnace gases and other products of incomplete combustion) from the chimney. Only here to put on a hood centrifugal operating on the vacuum pump is impossible. Because hot smoke is too aggressive medium to the rotating rotor blades. The other thing is the ejector, which, as you know, there are no moving parts. It effectively works by blowing high-speed jet carries you along the entire aspirated gas. A stream can create the same centrifugal pump, placed outside the corrosive environment and working on the injection.