Compact pulse combustion burner with enhanced heat transfer
First Claim
1. A pulse combustion burner comprising a combustion chamber, inlet means for admitting a combustible gaseous mixture into the chamber and restricting reverse flow therethrough, means for igniting the gaseous mixture, a wall forming the combustion chamber, the combustion chamber wall having a multitude of spaced apertures, the combustion chamber wall restricting flow of gases from said combustion chamber to passage through said apertures, a heat exchanger wall spaced from said combustion chamber wall and forming therewith passage means for receiving gases passing through said apertures, an exhaust conduit of predetermined cross section in communication with said passage means for receiving gases passing through said apertures, the collective area of said apertures being generally matched to the cross-sectional area of the exhaust conduit, said heat exchanger wall having heat transfer surface means arranged in close proximity to the path of combustion products passing through said apertures whereby jets of gas passing through such apertures create a high degree of turbulence and resulting high heat transfer rate at said heat transfer surface means.
2 Assignments
0 Petitions
Accused Products
Abstract
A pulse combustion burner having a multi-apertured combustion chamber wall surrounded by a primary heat transfer zone. Gas jets issuing out of the wall apertures induce high turbulence in the gas flow path through the heat transfer zone and thereby promote an exceptionally high level of heat exchange. Dimensions of the gas flow path, including the primary heat transfer zone, are arranged to cause the primary heat transfer zone to serve as an effective portion of the tailpipe of the burner. Both the high heat transfer capability and reduced tailpipe length permit reduction in the overall size of a burner unit.
10 Citations
6 Claims
- 1. A pulse combustion burner comprising a combustion chamber, inlet means for admitting a combustible gaseous mixture into the chamber and restricting reverse flow therethrough, means for igniting the gaseous mixture, a wall forming the combustion chamber, the combustion chamber wall having a multitude of spaced apertures, the combustion chamber wall restricting flow of gases from said combustion chamber to passage through said apertures, a heat exchanger wall spaced from said combustion chamber wall and forming therewith passage means for receiving gases passing through said apertures, an exhaust conduit of predetermined cross section in communication with said passage means for receiving gases passing through said apertures, the collective area of said apertures being generally matched to the cross-sectional area of the exhaust conduit, said heat exchanger wall having heat transfer surface means arranged in close proximity to the path of combustion products passing through said apertures whereby jets of gas passing through such apertures create a high degree of turbulence and resulting high heat transfer rate at said heat transfer surface means.
Specification