Positive air pressure isolation system

Details Positive air pressure isolation system Positive air pressure isolation system

2007-05-24

2009-12-01

McAllister, Steven B (Department: 3749)

Ventilation

Having inlet airway

Pressure regulation

C454S187000, C454S238000, C454S340000, C096S224000, C055S385200

Reexamination Certificate

active

07625277

ABSTRACT:
An air-pressure-control system, the system comprising a system inlet, a system outlet, and a variable-speed fan configured to operate at a speed. A motor controller in communication with the fan is configured to control the speed of the fan. A differential-pressure transducer configured to monitor an air pressure at the system inlet and an air pressure at the system outlet. A closed-loop pressure controller in communication with the motor controller and differential-pressure transducer, wherein the pressure controller is configured to vary the speed of the fan based on the pressure differential between the inlet and outlet of the system, thereby controlling a pressure within a space. An ultraviolet kill chamber may be disposed between the inlet and outlet to expose airborne particulate to UV radiation. The system may also have a filter located within an air-flow path between the system inlet and system outlet.

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International Searching Authority, International Search Report: Dated May 24, 2007; PCT/US2007/012585.

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