Gas or liquid fuel operated burner for heating incorporates swirl element with hub-and ring-discs, blades, cylindrical housing, adjustment for overflow air

摘要

A fixed swirl element (19) is in the form of a radial ventilator-impeller with a circular disc-shaped hub-disc(32) and a circular ring shaped impeller disc (33). The swirl element has blades (34) curved on axes parallel with the impeller's central axle (17). The swirl element is inserted into a cylindrical housing (22) whose casing (24) encloses the air-deflector element coaxially and contains a rotationally symmetrical adjusting element (21) axially symmetrical with the axle, The cross-section of an annular overflow gap (52) can be adjusted for the air supply to the combustion chamber (12).