Patent ID: 8585980

Claim:
An apparatus for ionizing air, the apparatus comprising: a first reflector arranged to: receive direct UV energy from a UV emitter; and reflect the direct UV energy to form reflected UV energy; a first target including: an inner face arranged to face towards the UV emitter and receive direct UV energy from the UV emitter; an outer face arranged to face away from the UV emitter and receive the reflected UV energy from the first reflector; a plurality of passages between the inner and outer faces of the first target, wherein the plurality of passages of the first target is arranged to pass direct UV energy from the UV emitter and to the first reflector, and wherein each of the plurality of passages is surrounded by the first target; a leading edge; and a trailing edge; a photo-catalytic coating on the inner and outer faces of the first target; a second reflector opposite the first reflector and arranged to: receive direct UV energy from the UV emitter; and specularly reflect the direct UV energy to form reflected UV energy; a second target opposite the first target and including: an inner face arranged to face towards the UV emitter and receive direct UV energy from the UV emitter; an outer face arranged to face away from the UV emitter and receive the reflected UV energy from the second reflector; a plurality of passages between the inner and outer faces of the second target, wherein the plurality of passages of the second target is arranged to pass direct UV energy from the UV emitter and to the second reflector, and wherein each of the plurality of passages is surrounded by the second target; a leading edge; and a trailing edge; a photo-catalytic coating on the inner and outer faces of the second target; and wherein: the inner face of the first target faces towards the inner face of the second target; the outer face of the first target faces away from the outer face of the second target; and both of the leading edges of the first and second targets are arranged to be upstream from both of the trailing edges of the first and second targets when an airflow is passed along the apparatus.