V-Bank filter

A V-Bank filter apparatus, the apparatus comprising:

• a pre-filter through which an airflow passes, wherein the pre-filter includes a pre-filter electrical conductor configured to ionize particles in the airflow as the particles enter the pre-filter;
• and
• a main filter including one or more sections that receive the airflow after the airflow passes through the pre-filter, each one of the one or more sections including:
• a metallic shield connected to a ground potential through which the airflow passes into the section;
• an electrical conductor configured to be connected to a voltage source that provides a voltage to the electrical conductor, the electrical conductor located within the section and the electrical conductor being different from the pre-filter electrical conductor, the voltage provided to the electrical conductor creating an electric field that ionizes particles included in the airflow passing through the section;
• and
• a plurality of filter elements, each filter element including a filter media disposed between a first filter grid that is connected to the ground potential and a second filter grid that is electrically isolated from the first filter grid, wherein:
• the electric field is disposed between the second filter grid and the first filter grid based on the second filter grid being charged to a potential and the first filter grid being connected to the ground potential when the voltage is provided to the electrical conductor by the voltage source, and
• the ionized particles in the airflow passing through the section are trapped in the filter media when the second filter grid is charged to the potential.