High efficiency particulate air filter ventilation system

Details High efficiency particulate air filter ventilation system High efficiency particulate air filter ventilation system

1991-11-01

1993-03-09

Hart, Charles

Gas separation

With nonliquid cleaning means for separating media

Solid agent cleaning member movingly contacts apparatus

55320, 55500, 55 21, B01D 4604

Patent

active

051923432

ABSTRACT:
A high efficiency ventilation system for removing contaminants from an area. The system includes a fan unit and filter unit. The filter unit has two filters, a prefilter and a HEPA filter, each of which has its static pressure monitored by a separate gauge. The static pressure of the fan used in the fan unit is monitored by a third gauge. Thus, it is possible to determine which of two filters needs replacement and troubleshooting can be performed much faster and more efficiently.

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patent: 4929261 (1990-05-01), Jacobson
patent: 4979967 (1990-12-01), Walter et al.
patent: 5042997 (1991-08-01), Rhodes

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