Air control system for a burner
AssigneeHunter Manufacturing Co.
InventorsThomas J. Gruber, Dale G. Putnat, Ernest J. Zajaczkowski
Life of this patent
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Abstract
An air control assembly for a fuel burner having a combustion chamber and a nozzle includes a control device which controls the amount of air that flows into the burner and an assembly dependent on fuel pressure which actuates the control device. A fuel inlet path is provided for communicating fuel to the nozzle and a fuel return path is provided for communicating excess fuel away from the nozzle. The assembly dependent on fuel pressure includes a piston and rod device adapted for reciprocation in a piston chamber. A nozzle block is provided in which the piston chamber is defined and the nozzle is supported.
Claims8
A heater apparatus comprising:
- a burner housing having a combustion chamber defined therein;
- a heat exchanger comprising a plurality of spaced concentric tubes wherein said burner housing extends into an innermost one of said plurality of tubes;
- a fan for providing air to said heat exchanger and said burner;
- a fuel primary air injection nozzle communicating with said combustion chamber;
- a first supply means for admitting fuel and primary air to said nozzle;
- a second supply means for admitting secondary air into said combustion chamber;
- a first control means for controlling the amount of excess fuel which is to be by-passed around said first supply means in a fuel return line;
- and,
- a second control means for controlling the amount of secondary air which is admitted by said second supply means of said combustion chamber.
Dependencies are inferred from the claim text.