Building decontamination with vaporous hydrogen peroxide

When microbial contamination is introduced into a room ( 20 *) of an enclosure, such as a building, an HVAC system including supply ductwork ( 16 ) and a return ductwork ( 34 ) is decontaminated with hydrogen peroxide vapor. A decontamination controller ( 46 ) operates controllable baffles ( 22 ) at...

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Bibliographic Details
Main Authors MCDONNELL GERALD E, SELIG VICTOR M, SCHWARTZ LEWIS I, MCVEY IAN F, BURKE PETER A
Format Patent
LanguageEnglish
Published 22.04.2008
Subjects
AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING
BLASTING
CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES
DISINFECTION, STERILISATION, OR DEODORISATION OF AIR
HEATING
HUMAN NECESSITIES
HYGIENE
LIGHTING
MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES
MECHANICAL ENGINEERING
MEDICAL OR VETERINARY SCIENCE
METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL
RANGES
VENTILATING
WEAPONS
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Summary:When microbial contamination is introduced into a room ( 20 *) of an enclosure, such as a building, an HVAC system including supply ductwork ( 16 ) and a return ductwork ( 34 ) is decontaminated with hydrogen peroxide vapor. A decontamination controller ( 46 ) operates controllable baffles ( 22 ) at outlet registers ( 20 ), temporary controllable baffles ( 44 ) at inlet registers ( 30 ), and a blower system ( 10 ) to circulate hydrogen peroxide vapor from hydrogen peroxide vapor generators ( 42 ) through the ductwork in both forward and reverse directions. Further, at least portions of the baffles are closed to create dwell times in which the hydrogen peroxide vapor resides in the ductwork with minimal or turbulent flow.
Bibliography:Application Number: US20040767908