Stoves and furnaces – Stove hoods
Reexamination Certificate
2005-02-08
2005-02-08
Clarke, Sara (Department: 3749)
Stoves and furnaces
Stove hoods
C126S29900R
Reexamination Certificate
active
06851421
ABSTRACT:
An exhaust hood (125, 225, 325, 425) captures and contains a thermal plume (170, 370, 470) with a minimum of exhaust air by defining a short-throw vertical curtain jet (150, 350, 453) around a protected perimeter. The jet augments the formation of a vortex (135, 335) within the hood which extends beyond the hood protected by the curtain jet. The effect is the extension of the buffer volume of the hood recess. This reduces the fluid strain that generates the turbulent eddies that cause breach of containment. Also, the curtain jet augments the vortical flow which is stable and contains less fluid strain than would otherwise occur. The hood recess is shaped to assist in defining the above vortex in terms of both its shape and its size. For example, the recess may be made smooth-walled according to an aspect of the invention.
REFERENCES:
patent: 3400649 (1968-09-01), Jensen
patent: 3513766 (1970-05-01), Ahlrich
patent: 4043319 (1977-08-01), Jensen
patent: 4047519 (1977-09-01), Nett
patent: 4050368 (1977-09-01), Eakes
patent: 4085736 (1978-04-01), Kuechler
patent: 4127106 (1978-11-01), Jensen
patent: 4134394 (1979-01-01), Otenbaker
patent: 4153044 (1979-05-01), Nett
patent: 4346692 (1982-08-01), McCauley
patent: 4475534 (1984-10-01), Moriarty
patent: 4483316 (1984-11-01), Fritz et al.
patent: 4484563 (1984-11-01), Fritz et al.
patent: 4556046 (1985-12-01), Riffel et al.
patent: 4586486 (1986-05-01), Kaufman
patent: 4655194 (1987-04-01), Wooden
patent: 4811724 (1989-03-01), Aalto et al.
patent: 5050581 (1991-09-01), Röhl-Hager et al.
patent: 5251608 (1993-10-01), Cote
patent: 5522377 (1996-06-01), Fritz
patent: 6044838 (2000-04-01), Deng
patent: 6058929 (2000-05-01), Fritz
patent: 68512 (1993-09-01), None
patent: 03247937 (1991-11-01), None
patent: WO 0184054 (2001-11-01), None
patent: 03056252 (2003-07-01), None
Livchak Andrey
Meredith Philip
Clarke Sara
Halton Company
Proskauer Rose LLP
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