United States Patent
US Patent 4431403: Burner and method
US 4431403 · granted 1984-02-14
Abstract
A multi-fuel industrial heating burner having an exhaust velocity of about 15,000 feet per minute. The fuel is first burned in a swirling toroidal recirculation zone and flows into the burner tile and shear mixes with a counter-swirling flow of combustion air flowing along the burner tile. As the flows shear mix, additional combustion air is provided to the central burning gases and the rotational momentum of the swirling flows is dissipated. The burner discharge gases flow axially without swirl.
| Patent Number | 4431403 |
|---|---|
| Title | Burner and method |
| Filed | 1981-04-23 |
| Granted | 1984-02-14 |
| Inventor(s) | Nowak; Leonard G., Wojcieson; Raymond J. |
| Assignee | Hauck Manufacturing Company |
| Number of Claims | 68 |
Abstract
A multi-fuel industrial heating burner having an exhaust velocity of about 15,000 feet per minute. The fuel is first burned in a swirling toroidal recirculation zone and flows into the burner tile and shear mixes with a counter-swirling flow of combustion air flowing along the burner tile. As the flows shear mix, additional combustion air is provided to the central burning gases and the rotational momentum of the swirling flows is dissipated. The burner discharge gases flow axially without swirl.
Claim 1
An industrial heating burner including a fuel discharge device, an axial fuel supply pipe extending upstream from the fuel discharge device, a flame retentioncone surrounding the fuel discharge device and extending downstream from and radially outwardly of the device, a first combustion air swirl generator having an inlet for receiving a supply of combustion air and an outlet, an outer collar surrounding thefuel supply pipe, said outer collar having a downstream end joined to the flame retention cone and an upstream end joined to the swirl generator outlet, and a plurality of secondary air flow holes formed through said flame retention cone within saidouter collar, said holes being essentially uniformly spaced on the surface of the cone whereby combustion air swirled by said generator flows inside said outer collar, is thrown radially outwardly against said outer collar and is partially dammed by thecone to provide an essentially uniform swirling flow of combustion air through the openings in the cone and around the interior of the cone; wherein said first air swirl generator surrounds the fuel supply pipe and the burner includes a second combustion air swirl generator surrounding
Claims
68 totalAn industrial heating burner including a fuel discharge device, an axial fuel supply pipe extending upstream from the fuel discharge device, a flame retentioncone surrounding the fuel discharge device and extending downstream from and radially outwardly of the device, a first combustion air swirl generator having an inlet for receiving a supply of combustion air and an outlet, an outer collar surrounding thefuel supply pipe, said outer collar having a downstream end joined to the flame retention cone and an upstream end joined to the swirl generator outlet, and a plurality of secondary air flow holes formed through said flame retention cone within saidouter collar, said holes being essentially uniformly spaced on the surface of the cone whereby combustion air swirled by said generator flows inside said outer collar, is thrown radially outwardly against said outer collar and is partially dammed by thecone to provide an essentially uniform swirling flow of combustion air through the openings in the cone and around the interior of the cone; wherein said first air swirl generator surrounds the fuel supply pipe and the burner includes a second combustion air swirl generator surrounding