Heating – Processes of heating or heater operation – Treating an article – container – batch or body as a unit
Patent
1978-12-04
1980-12-09
Camby, John J.
Heating
Processes of heating or heater operation
Treating an article, container, batch or body as a unit
34 26, 34 34, 165105, 432 66, 432197, 432226, F27D 700
Patent
active
042381860
ABSTRACT:
Several methods and apparatus (10, 60) are disclosed for vapor condensation heating only a selected underside surface area of an article (18, 18') while continuously minimizing loss of the generated vapor (26b, 26b') to the atmosphere. In accordance with several preferred embodiments, a composite vessel (11, 11') is formed with a lower stationary sidewall section (14), including venting means (28, 29, 31, 32, 34), and a channel (41) adapted to telescopically receive an upper, internally cooled and retractable sidewall section (13, 44, 13', 44') in a manner that establishes a vapor barrier (27) of controllable volume therewithin. As such, an article (18, 18') to be heated, when initially mounted on the top of the upper sidewall section (13, 13') may thereafter be readily displaced downwardly such that only a selected underside surface area thereof is controllably brought into contact with, and heated by, a single heat transfer liquid (26)--generated body of hot vapor (26b, 26b') confined therebelow.
REFERENCES:
patent: 2176348 (1939-10-01), Juettner
patent: 3479252 (1969-11-01), Holm et al.
patent: 3793076 (1974-02-01), Lea
patent: 3866307 (1975-02-01), Pfahl, Jr.
patent: 3904102 (1975-09-01), Chu
patent: 4022371 (1977-05-01), Skarvinko
patent: 4022932 (1977-05-01), Feng
patent: 4055217 (1977-10-01), Chu
patent: 4077467 (1978-03-01), Spigarelli
Article entitled "Solvent Vapor Solder Reflow", by E. G. Dingman, IBM Technical Disclosure Bulletin, vol. 13, No. 3.
Bergum K. R.
Camby John J.
Western Electric Company Inc.
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