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US 6,280,691 B1Granted
Indoor air purification system
AssigneeAlliedSignal Inc.
InventorsStephen T. Homeyer, Joel Walenga, Carlos Cavalca
Life of this patent
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Abstract
The present invention relates to a system for indoor air purification system to and particularly to a system for removing particulates, biologicals, and gaseous chemical contaminates through the use of low room temperature catalysts, a closed cycle heat exchanger a HEPA filter and polisher for removing NOx and SOx from the air flow.
Claims13
An indoor air purification system comprising:
- a blower for establishing a flow of air through the system;
- an oxidation catalyst for removing contaminants from the air;
- a heat exchanger for heating the air prior to catalytic removal of contaminants by the oxidation catalyst and for cooling the air after the catalytic removal of contaminants by the oxidation catalyst;
- an airflow sensor for sensing the movement of the air over the oxidation catalyst;
- and
- a control unit, responsive to the airflow sensor, for controlling the blower to maintain system air flow within an operating temperature range.
3 more elements
An indoor air purification system for treating inlet air, the system comprising:
- a housing;
- an inlet heat exchanger for heating the inlet air to a temperature between 250° F. and 350° F.;
- an oxidation catalyst operable between 250° F. and 350° F. for performing catalytic removal of contaminants in the air heated by the inlet heat exchanger;
- an ozone decomposition catalyst for removing ozone from the air following the catalytic removal;
- and
- an outlet heat exchanger for reducing the temperature of the air to between 20° F. and 100° F. following the ozone removal;
- the outlet heat exchanger supplying heat to the inlet heat exchanger;
- the heat exchangers and the catalysts being contained within the housing.
5 more elements
Dependencies are inferred from the claim text.