Conditioning air for human use

Details Conditioning air for human use Conditioning air for human use

1993-04-22

1994-11-29

Alexander, Lyle A.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Using disinfecting or sterilizing substance

422 4, 422 5, 42218607, 422172, A61L 900

Patent

active

053688163

ABSTRACT:
A stream of air containing oxidizable pollutants is passed in an air-conditioning system through a conditioning station, an ozonating station, a filter station downstream of the ozonating station, and a testing station downstream of the filter station and then introduced into a living space. Ozone is added to the stream in the ozone station to oxidize the pollutants in the stream. The added ozone is decomposed into stable oxygen in the filter station and the ozone concentration in the stream is detected at the testing station with a sensor and the system is at least partially shut down when the detected ozone concentration exceeds a predetermined safety threshold. The concentration of pollutants in the stream is detected upstream of the ozonating station and the amount of ozone added to the stream in the ozonating station is adjusted so that it just corresponds to the amount needed to oxidize the pollutants sensed and does not substantially exceed this amount. In addition one periodically introduces into the stream at a location downstream of the filter station and upstream of the testing station a quantity of ozone sufficient to raise the ozone concentration in the gas stream above a predetermined threshold level detectable by the sensor and insufficient to raise the ozone concentration in the gas stream above the predetermined safety threshold so that the sensor is periodically tested.

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