US 4,480,986 AGranted

Liquid fuel vaporizing burner

AssigneeSea-Labs, Inc.

InventorsRichard H. Nelson, Ray G. Christensen, David Stedman

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Abstract

A liquid fuel vaporizing burner comprising a combustion chamber, a fuel inlet, a primary air inlet, a secondary air inlet, and a microprocessor controller. The fuel inlet communicates with the combustion chamber. The primary air inlet communicates with the combustion chamber and is interactive with the fuel inlet. The heated secondary air inlet extends about the combustion chamber in heat exchange relationship. The combustion chamber has walls of generally heat conductive material. The combustion chamber comprises a combustion region and an exhaust region. The secondary air inlet opens at one end to the atmosphere and at its other end to a mixing passage. The microprocessor controller is electrically connected to thermocouples about the burner, to the primary and secondary air inlets, and to the fuel inlet.

Claims20

Dependent claims

A fuel vaporizing burner comprising:

a combustion chamber;
fuel inlet means communicatively connected to said combustion chamber for delivering fuel to said chamber, said fuel inlet means comprising:
a conduit connected to a supply of said fuel;
an atomizer connected to said conduit, said atomizer for converting said fuel into droplets, said atomizer including a heating element;
means forming a mixing chamber opening to said atomizer and communicating with said combustion chamber;
and
valving means arranged about said conduit;
said atomizing means including primary air inlet means communicatively connected to said mixing chamber and interactive with said fuel inlet means;
secondary air inlet means extending about said combustion chamber in heat exchange relationship means in communication with said secondary air inlet means for passing air to said combustion chamber and said mixing chamber;
and
control means interactive with said primary air inlet means and said secondary air inlet means for independently varying the flow rates of said air passing therethrough responsive to temperature conditions within said burner, said heating element and said valving means being responsive to signals from said control means.

8 more elements

A liquid fuel vaporizing burner comprising:

a combustion chamber having walls of generally heat conductive material;
a fuel vaporizing tube communicating with said combustion chamber;
a fuel inlet means communicating with said vaporizing tube for delivering fuel to said vaporizing tube;
heated air inlet means extending about said combustion chamber in heat exchange relationship, said heated air inlet means for passing air to said vaporizing tube;
microprocessor control means electrically connected about said burner, said microprocessor control means having inputs from thermocouples arranged about said combustion chamber, the output of said microprocessor means connected to said fuel inlet means and said heated air inlet means for controlling the fuel/air mixture entering said vaporizing tube;
and
primary air inlet means for passing air to said vaporizing tube, said primary air inlet means being in fluid communication with said vaporizing tube, said microprocessor control means having an output interactive with said primary air inlet means, said primary air inlet means and said fuel inlet means communicating with said vaporizing tube through an atomizer nozzle.

4 more elements

A liquid fuel vaporizing burner comprising:

a combustion chamber having walls of generally heat conductive material;
a fuel vaporizing tube communicating with said combustion chamber;
a fuel inlet means communicating with said vaporizing tube for delivering fuel to said vaporizing tube;
heated air inlet means extending about said combustion chamber in heat exchange relationship, said heated air inlet means for passing air to said vaporizing tube;
atomizing means connected to said fuel inlet means, said atomizing means opening to said fuel vaporizing tube, primary air supply means including a control valve connected to said atomizing means;
microprocessor control means electrically connected about said burner, said microprocessor control means having inputs from thermocouples arranged about said combustion chamber, the output of said microprocessor means connected to said fuel inlet means and said heated air inlet means, and said primary air valve for controlling the fuel/air mixture entering said vaporizing tube;
ignition means in said combustion chamber for igniting the mixture from said vaporizing tube;
and
a diffuser mounted within said combustion chamber, said diffuser receiving the mixture from said vaporizing tube, said diffuser positioned generally adjacent said ignition means.

6 more elements

Dependencies are inferred from the claim text.