Portable nitrogen source

Details Portable nitrogen source Portable nitrogen source

1993-01-22

1995-02-14

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

95 54, F25J 300

Patent

active

053884132

ABSTRACT:
A nitrogen gas source for providing nitrogen gas at sequential work sites includes a channel for containing flowing gas at a pressure greater than ambient atmospheric pressure. A compressor provides compressed air at a pressure greater than atmospheric pressure to an up-stream end of the channel. A central portion of the channel includes a nitrogen module with a membrane wall portion for selectively constraining nitrogen within the channel while allowing other gases to escape from the channel through the membrane. A downstream portion of the channel includes a bifurcated channel section with a first bifurcated section passage having a first flow restrictor and second bifurcated section passage having a second flow restrictor. A two position valve allows flowing gas to be selectively directed through the first or second passage. The compressor, module and channel are mounted within a cabinet in fixed, functional relation and a handle is provided on the top of the cabinet to facilitate transport between work sites.

REFERENCES:
patent: 3229472 (1986-01-01), Beers
patent: 3802216 (1974-04-01), Brandimarte
patent: 4881953 (1989-11-01), Prasad et al.
Medal, L. P. (Dupont), paper, Helicopter OBIGGS, May 1991.
Generon Systems (Dow Chemical Co. & The BOC Group) product brochure, The Gold Line Membrane Modules for Nitrogen Production, date unknown.
Permea, Inc. product brochure, NiVox Nitrogen Systems, date unknown.

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