Reflow furnace and heater for blowing hot air

Details Reflow furnace and heater for blowing hot air Reflow furnace and heater for blowing hot air

2011-08-02

2011-08-02

Ward, Jessica L (Department: 1735)

Metal fusion bonding

Including means to apply flux or filler to work or applicator

Gaseous flux

C228S020100, C228S256000, C219S420000, C432S120000

Reexamination Certificate

active

07988031

ABSTRACT:
A reflow furnace using a conventional heater for blowing hot air has difficulty in reducing Δt and in stabilizing the oxygen concentration at a low level. In addition, it is difficult to uniformly discharge hot air from the discharge holes in a perforated plate of a conventional heater for blowing hot air. In a reflow furnace according to the present invention, the total area per unit area of discharge holes formed in a perforated plate in a heater for blowing hot air installed in a main heating zone is 1.5-5 times the total area per unit area of the discharge holes formed in a perforated plate of a heater for blowing hot air installed in a preheating zone. A heater for blowing hot air has a body divided into three chambers by partitions.

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patent: 2003033867 (2003-02-01), None

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