Gas purifier

Details Gas purifier Gas purifier

1998-03-11

2000-02-29

Smith, Duane S.

Gas separation: apparatus

With control means responsive to sensed condition for...

Gas cutoff or diversion

95 12, 96417, B01D 4646

Patent

active

060304375

ABSTRACT:
In a gas purifier, a gas flow is generated by a fan (15) and passed through a filter arrangement (14). A difference (SF) is measured (16, 19) between pollution levels in the gas flow before and after it has passed the filter arrangement (14). A controller (18) reduces the gas flow when the difference (SF) between the pollution levels drops below a threshold value (Th).

REFERENCES:
patent: 4820317 (1989-04-01), Fahey
patent: 5429649 (1995-07-01), Robin
patent: 5461368 (1995-10-01), Comer
patent: 5688308 (1997-11-01), Voigts
patent: 5810908 (1998-09-01), Gray et al.

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