F - Mech Eng,Light,Heat,Weapons – 23 – D
Patent
F - Mech Eng,Light,Heat,Weapons
23
D
158/144
F23D 11/36 (2006.01) F23D 11/40 (2006.01)
Patent
CA 1073337
LARGE BURNERS, PARTICULARLY FOR LIQUID FUELS ABSTRACT OF THE DISCLOSURE A burner for liquid fuels such as light, medium and heavy oil, in which a fuel supply pipe is concentrically located in an air supply pipe and partially enclosed by a sleeve carrying air. A spray diffuser and a twist-producing member encloses the fuel supply pipe upstream of the spray diffuser. The twist-producing member has a fixed blower wheel and receives combustion air from the periphery thereof. The combustion air quantity is regulatable upstream of the burner head as a function of the prevailing fuel flow. A space located between the twist-producing member and the air supply pipe, holds two additional air supply pipes. One of these additional air supply pipes, an innermost pipe, has an end cone directed towards the outside. Coaxially downstream from the twist-producing member enclosing the fuel supply pipe, there are two additional twist-producing members with opposite twist di- rection enclosing each other. One of these additional twist- producing members is an inner member having a twist direction corresponding to the twist direction of the first-mentioned twist-producing member. The smallest diameter of the inner twist- producing member is connected to an axial discharge opening of the main or first-mentioned twist-producing member enclosing the fuel supply pipe. The largest diameter of the outer twist-producing member is located between a cylindrical part of the inside air supply pipe and its outward directed end cone. A sliding link closes, at partial load of the burner, the intake to the other twist-producing member which is the main member enclosing the fuel supply pipe, the space between the two additional air supply pipes, and the intake to the outer twist producing member, whereas the sliding link opens these elements in other load regions of the burner.
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