Patent ID: 6994743

Claim:
An air purification system for removing airborne particles from an airflow, the system comprising: a hood having an inlet for receiving the airflow from a space beneath the hood and a hood outlet for exhausting the airflow to a duct; a first filter mounted within the hood and disposed in the airflow to remove therefrom at least some of the airborne particles to produce a first-filtered airflow; and a second filter mounted within the hood and disposed downstream of the first filter to receive the first-filtered airflow, the second filter having a porous filtration chamber containing at least one filtration member and the first-filtered airflow flows through the filtration chamber and the filtration member removes airborne particles from the first-filtered airflow to produce second-filtered airflow that is exhausted through the hood outlet, wherein the airflow path between the first and second filters defines a substantially straight path; and wherein the filtration member is formed from a ceramic.