Seal arrangement for high temperature furnace applications

Details Seal arrangement for high temperature furnace applications Seal arrangement for high temperature furnace applications

1987-12-02

1988-11-29

Yuen, Henry C.

Heating

Work feeding, agitating, discharging or conveying...

Having closure or seal for work feeder's entrance passage

432205, 432247, 432249, 432250, 34242, F27D 118

Patent

active

047878444

ABSTRACT:
A seal arrangement is disclosed for use in a furnace which utilizes a thin, cylindrical imperforate shell member which is heated from an external source to heat work placed within the shell. An insulated arrangement within and outside of the shell extends a spaced distance from the shell's opening to sandwich the shell's wall therebetween. The arrangement prevents heat flux by radiation and convection from heating the sandwiched wall thus permitting graded cooling of the sandwiched shell wall by conduction to a temperature whereat a conventional elastomer seal can be employed to seal the shell member.

REFERENCES:
patent: 2791415 (1957-05-01), Huppert
patent: 3019006 (1962-01-01), Lillienberg
patent: 3540710 (1970-11-01), Yamagishi et al.
patent: 3940245 (1976-02-01), Smith, Jr. et al.
patent: 3971875 (1976-07-01), Regalbuto
patent: 4212633 (1980-07-01), Kreider et al.
patent: 4427378 (1984-01-01), Bowers
patent: 4527974 (1985-07-01), Carraroli et al.
patent: 4600378 (1986-07-01), Fujita et al.

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