Anti-pollution steam generation system

Claim 1

An anti-pollution oil burner steam generation system comprising a gun type oil burner having an outlet tube, means in said tube for creating a swirling movement of the air passing therethrough, a primary combustion chamber secured to said tube to receive the products of combustion therefrom, said primary combustion chamber having an diameter greater than the diameter of said tube and having a reduced diameter outlet at the end thereof opposite said tube, a secondary combustion chamber secured to the outlet of said primary combustion chamber to receive products of combustion therefrom, said secondary combustion chamber having a diameter substantially greater than the diameter of said primary combustion chamber, a plurality of bores formed in the wall of said secondary combustion chamber to admit additional air thereto for completing the combustion of materials received from said primary combustion chamber, a steam coil extending longitudinally of said secondary combustion chamber, a water pre-heater positioned down stream of said secondary combustion chamber in the path of the products of combustion flowing therefrom, means connecting said water preheater to said steam coil, a generally cylindrical housing completely surrounding and spaced radially outwardly from said secondary combustion chamber, a fan for supplying air to said secondary combustion chamber mounted in said housing for blowing air over said secondary combustion chamber and through said bores therein, and an insulating ring in said housing completely surrounding said secondary combustion chamber and spaced radially outwardly therefrom to prevent undue heat loss from said secondary combustion chamber with the air from said fan passing between said secondary combustion chamber and said insulating ring.