Heat retaining curtains for reheat furnace discharge openings an

Details Heat retaining curtains for reheat furnace discharge openings an Heat retaining curtains for reheat furnace discharge openings an

1993-03-24

1994-05-10

Yuen, Henry C.

Heating

Having fluid curtain at chamber port or work path

432242, 432250, F24F 900

Patent

active

053103386

ABSTRACT:
A discharge opening for a reheat furnace is shielded with a pair of metal woven wire mesh curtains each secured above the discharge opening and hanging to the bottom of the opening. Each curtain preferably is formed from multiple parallel coplanar ribbons, each extending from above the discharge opening to the bottom of the discharge opening. The mesh curtains are fabricated from a sag resistant metal alloy. Embodiments are described for accommodating slots which receive discharge lifter members for removing heated metal workpieces from the furnace. A preferred mounting apparatus employs one or more fibrous thermal insulation strips above the discharge opening. A counterweight mounting apparatus urges the fibrous thermal insulating strips against the outer wall of the furnace.

REFERENCES:
patent: 3841614 (1974-10-01), Okuno
patent: 4411075 (1983-10-01), Blaudszun
patent: 4517448 (1985-05-01), Crain et al.
patent: 4681536 (1987-07-01), Jansen
patent: 5172849 (1992-12-01), Barten et al.

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