Positive flow purge system for microflame torch

Details Positive flow purge system for microflame torch Positive flow purge system for microflame torch

1997-07-25

1998-10-27

Dority, Carroll B.

Combustion

With apparatus cleaning, purging or scavenging means

431346, 48192, F23D 1138

Patent

active

058270531

ABSTRACT:
A positive flow purge system for a microflame torch including a source of combustible gas, a source of non-combustible gas and a gas valve having first and second gas inlets and a gas outlet. A first gas line connects the source of combustible gas to the first gas inlet and a second gas line connects the source of non-combustible gas to the second gas inlet. A third gas line connects the gas outlet of the valve to a microflame nozzle tip. A flashback arrestor is imposed in the first gas line between the source of the combustible gas and the first gas inlet. The gas valve permits the non-combustible gas to flow to the nozzle tip so that the flame at the nozzle tip will be extinguished when the gas valve is moved from its on position to its off position.

REFERENCES:
patent: 3957618 (1976-05-01), Spirig
patent: 4113601 (1978-09-01), Spirig
patent: 4206029 (1980-06-01), Spirig
patent: 4336122 (1982-06-01), Spirig
patent: 4647201 (1987-03-01), McCaffrey
patent: 4923394 (1990-05-01), Fumino
patent: 5169053 (1992-12-01), Rochat
Brocure: "The Spirflame.RTM. ", Undated, offered by Spirig, 18 pages.

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