Cabin air quality system
First Claim
1. An air quality system for removing a pollutant from an air stream, and for providing cleansed air to an interior air space, said air quality system comprising:
- at least one air cleaner unit in communication with said interior air space, wherein said at least one air cleaner unit provides only a single flow path for said air stream, wherein said at least one air cleaner unit comprises a first photocatalytic oxidation unit and a first adsorbent unit, and wherein said first photocatalytic oxidation unit is located upstream or downstream from said first adsorbent unit.
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Accused Products
Abstract
An air quality system comprising at least one air cleaner unit in communication with an interior air space. In one embodiment, an air quality system for an aircraft comprises a first set of air cleaner units in communication with a lower plenum of the aircraft recirculation system and a second set of air cleaner units in communication with an upper plenum of the aircraft recirculation system. Each air cleaner unit comprises at least one adsorbent unit in combination with at least one photocatalytic oxidation unit. In one embodiment, an air cleaner unit comprises a relatively weak adsorbent material upstream from a photocatalytic oxidation unit, and a relatively strong adsorbent material downstream from the photocatalytic oxidation unit. Methods for removing a pollutant from an air stream and for making an air cleaner unit are also disclosed.
49 Citations
63 Claims
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1. An air quality system for removing a pollutant from an air stream, and for providing cleansed air to an interior air space, said air quality system comprising:
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at least one air cleaner unit in communication with said interior air space, wherein said at least one air cleaner unit provides only a single flow path for said air stream, wherein said at least one air cleaner unit comprises a first photocatalytic oxidation unit and a first adsorbent unit, and wherein said first photocatalytic oxidation unit is located upstream or downstream from said first adsorbent unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An air quality system for an interior air space of an aircraft, said interior air space including a cabin, a lower plenum, and an upper plenum, and said air quality system comprising:
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a mix manifold for distributing air to said interior air space;
a lower recirculation system in communication with said mix manifold;
an upper recirculation system in communication with said lower recirculation system;
at least one air intake unit in communication with said mix manifold; and
a plurality of air cleaner units in communication with said interior air space, each of said plurality of air cleaner units comprising at least one photocatalytic oxidation unit and at least one adsorbent unit, said at least one photocatalytic oxidation unit located upstream or downstream from said at least one adsorbent unit. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A vehicle, comprising:
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an air quality system including at least one air cleaner unit and an interior air space, said at least one air cleaner unit in communication with said interior air space, said at least one air cleaner unit comprising a first photocatalytic oxidation unit, a first adsorbent unit, and a second adsorbent unit, said first photocatalytic oxidation unit is located downstream from said first adsorbent unit, and said second adsorbent unit located downstream from said first photocatalytic oxidation unit. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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33. An air cleaner unit for removing a pollutant from an air stream, comprising:
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a housing;
a first photocatalytic oxidation unit arranged within said housing; and
a first adsorbent unit arranged parallel to said first photocatalytic oxidation unit in said housing, said housing defining only a single flow path for said air stream. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. An air cleaner unit for removing a pollutant from an air stream, comprising:
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a first adsorbent unit;
a first photocatalytic oxidation unit located downstream from said first adsorbent unit;
a second adsorbent unit located downstream from said first photocatalytic oxidation unit; and
a housing, said first adsorbent unit, said first photocatalytic oxidation unit, and said second adsorbent unit arranged parallel to each other within said housing, said housing defining a single flow path for said air stream, said first adsorbent unit, said first photocatalytic oxidation unit, and said second adsorbent unit arranged orthogonal to said air stream, wherein said first photocatalytic oxidation unit comprises a plurality of photocatalytic panels, each of said plurality of photocatalytic panels comprises a photocatalytic support and a photocatalytic agent disposed on said photocatalytic support. - View Dependent Claims (44)
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45. A method for removing a pollutant from an air stream, the method comprising:
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a) providing at least one air cleaner unit, said air cleaner unit comprising a first adsorbent unit, a first photocatalytic oxidation unit, and a second adsorbent unit, wherein said first photocatalytic oxidation unit is located downstream from said first adsorbent unit and said second adsorbent unit is located downstream from said first photocatalytic oxidation unit;
b) passing said air stream through said first adsorbent unit, said first adsorbent unit including a first adsorbent material having a first isotherm curve for adsorption of said pollutant;
c) thereafter, passing said air stream through said first photocatalytic oxidation unit; and
d) thereafter, passing said air stream through said second adsorbent unit, said second adsorbent unit including a second adsorbent material having a second isotherm curve for adsorption of said pollutant. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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56. A method for making an air cleaner unit for removing pollutants from an air stream, the method comprising:
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a) providing a first photocatalytic oxidation unit;
b) providing a first adsorbent unit;
c) providing a housing for accommodating said first photocatalytic oxidation unit and said first adsorbent unit;
d) arranging said first adsorbent unit in said housing; and
e) arranging said first photocatalytic oxidation unit in said housing such that said first photocatalytic oxidation unit is located downstream or upstream from said first adsorbent unit, wherein said housing is adapted for providing a single flow path for passage of said air stream through said first photocatalytic oxidation unit and said first adsorbent unit. - View Dependent Claims (57, 58, 59, 60, 61, 62, 63)
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Specification