Device for boilers
OwnerKaj-Ragnar Loqvistinventor
Life of this patent
Estimating the term…
Abstract
A device for an oil burner has a ceramic tube (1) inside which a shorter tube (61) is arranged, so that there is a slot between the tubes. The device stands freely in the combustion room of the boiler, and it is coaxial with an oil burner (66) that is mounted in the boiler room wall. Combustion fumes mixed with fresh air from the fan of the oil burner is sucked into the slot that ends inside the ceramic tube. The oil burner flame in the inner tube (61) heats this inner tube that in turn heats the air that is sucked through the slot and is secondary combustion air. The slot has screw-formed ridges that impart a heavy rotation to the secondary air; a rotation that is counter to the rotation of the primary air of the burner. Since the secondary air is hot and rotates heavily, the final combustion will be very efficient.
Claims12
A boiler comprising:
- a combustion chamber;
- an arrangement to carry heat away from said combustion chamber;
- a tube disposed in said combustion chamber;
- said tube comprising a first end;
- said tube comprising a second end;
- a burner disposed to inject a flame into said first end of said tube;
- said tube comprising a first portion disposed adjacent to said first end of said tube;
- said tube comprising a second portion disposed adjacent said first portion of said tube and away from said first end of said tube;
- said first portion of said tube having an interior cross section dimension;
- said second portion of said tube having an interior cross section dimension;
- said interior cross section dimension of said first portion being less that said interior cross section dimension of said second portion;
- and
- said first portion of said tube comprising at least one channel configured to suck hot fumes from said combustion chamber, to further heat the hot fumes sucked from said combustion chamber, and to inject the further heated hot fumes into said second portion of said tube for further combustion upon said burner injecting a flame into said first end of said tube.
Dependencies are inferred from the claim text.