Heating – Processes of heating or heater operation – Including preparing or arranging work for heating
Patent
1976-03-31
1977-09-27
Camby, John J.
Heating
Processes of heating or heater operation
Including preparing or arranging work for heating
113 1C, 165151, 432 22, F27D 1300, F27B 322
Patent
active
040508811
ABSTRACT:
A process for heating the tubular joints of a heat exchanger assembly to facilitate the creation of a fluid-tight bond between the tubular elements. The joints are positioned adjacent to one or both of the heat exchanger tube sheets and a jet of flammable gas directed into the joint region generally perpendicular to the plane of the tube sheet. The velocity of the gas stream directed at the sheet is high enough to prevent the gas from mixing with ambient air and thus being ignited. Upon impacting the tube sheet, the gas stream is redirected along the sheet, reducing its speed and mixing the gas with surrounding air. A combustible blanket is thus established about the tube joints which is ignited to produce controlled heating thereof.
REFERENCES:
patent: 2160633 (1939-05-01), Young
patent: 3601878 (1971-08-01), Karmasin
Camby John J.
Carrier Corporation
Curtin J. Raymond
Daley Donald F.
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