Air cleaning system, for automobile passenger compartment, has photocatalyst on downstream surface of air conditioning evaporator, illuminated by lamp to destroy bacteria

摘要

An assembly to clean the air within the automobile passenger compartment, has an air conditioning system with a group of powered fans to impel a flow of air through an air distribution channel containing an evaporator (10), with upstream and downstream (12) surfaces. A photocatalyst agent covers the downstream surface, and a UV tube lamp (14) is downstream of the evaporator in the air flow direction to illuminate most of its surface. A particle filter (16) is upstream of the evaporator behind an ionizer (18), and a grid (19) to retain particles above given dimensions in the air flow. Preferred Features: The filter particles are of active carbon, zeolite, or a mixture of them.