Fluid distribution apparatus

Details Fluid distribution apparatus Fluid distribution apparatus

1989-04-03

1990-05-22

Bennet, Henry A.

Heating

Work chamber having heating means

Interior bell forms muffle

432136, 432152, 432144, 432198, 432200, 137561A, 137561R, 118715, F27B 516, F27B 510, F27B 504

Patent

active

049273590

ABSTRACT:
A two-stage gas distribution nozzle for a muffle furnace includes an inner pipe with spaced apertures for feeding gas at spaced intervals to an outer pipe enclosing the inner pipe. The outer pipe includes spaced apertures facing in a direction such that the jets of gas from the inner pipe impinge on a wall of the outer pipe opposite the outer pipe apertures. The gas in the outer pipe is at lower pressure than the gas in the inner pipe and is more uniformly distributed along the length of the outer pipe to provide more uniform flow to the ambient atmosphere in the muffle.

REFERENCES:
patent: 2938473 (1960-05-01), Mahoney et al.
patent: 3138372 (1962-01-01), Beck
patent: 4108106 (1978-08-01), Dozier
patent: 4144045 (1979-03-01), Starr
patent: 4148275 (1979-04-01), Benden et al.
patent: 4263872 (1981-04-01), Ban
patent: 4377080 (1983-03-01), Fox
patent: 4401689 (1983-08-01), Ban
patent: 4499853 (1985-02-01), Miller
patent: 4809643 (1989-03-01), Plesinger et al.
patent: 4825809 (1989-05-01), Mieno
patent: 4838201 (1989-06-01), Fraas et al.

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