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US 5,989,020 AGranted
Multiple stage heating apparatus
AssigneeLochinvar, LLC
InventorsRobert Glass, Wayne Hollingshead
Life of this patent
Estimating the term…
Abstract
A heating apparatus includes at least first and second burners located in a combustion chamber wherein the burners are separated by a divider for deterring uncombusted fuel flowing from a firing burner to an area adjacent to a non-firing burner. In another aspect of the present invention, the burners are used to heat water in a multiple staged heater.
Claims24
A heating apparatus comprising:
- a substantially enclosed combustion chamber having a flue outlet;
- a first burner located in said combustion chamber;
- a second burner located in said combustion chamber;
- and
- a divider located between said first and second burners serving to deter unburned fuel flowing from a first area adjacent said first burner to a second area adjacent said second burner when said first burner is combusting fuel and said second burner is not combusting fuel.
2 more elements
A heating apparatus comprising:
- a flue outlet;
- a single combustion chamber coupled to said flue outlet, said combustion chamber having a first internal area, a second internal area and a floor;
- a burner assembly including a first set of burners located in said first internal area of said combustion chamber, and a second set of burners located in said second internal area of said combustion chamber;
- and
- a divider projecting upward from said floor in a substantially vertical manner substantially between said first set of burners and said second set of burners.
2 more elements
A method of operating a heating apparatus, said method comprising:
- (a) directing fuel from a fuel source to a first burner;
- (b) directing air from an air chamber to said first burner;
- (c) firing said first burner to ignite said air and fuel flowing thereto in a first portion of a combustion chamber;
- (d) providing a wall located between said first burner and a second burner for maintaining uncombusted fuel within said first portion of said combustion chamber;
- (e) flowing air from said air chamber to said second burner;
- (f) determining if the heating apparatus is operating in a high stage firing condition;
- (g) selectively directing fuel from said fuel source to said second burner if the heating apparatus is operating in said high stage firing condition;
- and
- (h) firing said second burner to ignite said air and fuel flowing thereto in a second portion of said combustion chamber if the heating apparatus is operating in said high stage firing condition.
6 more elements
Dependencies are inferred from the claim text.