Filtering apparatus with at least one filter unit

A filtering apparatus comprising:

• (a) an elongated housing configured to receive overspray air along an entry flow path, which is substantially parallel to the length of the housing, and guide the overspray air along an exit flow path that is transverse to the entry flow path, the housing defined by at least an upstream sidewall, lateral sidewalls and a downstream sidewall, the downstream sidewall having an opening through which the overspray air exits the housing;
• (b) a top plate mounted to the housing and having an overspray-receiving surface toward which overspray air in the entry flow path is directed, wherein an entry opening is defined by the upstream sidewall, the lateral sidewalls and an edge of the top plate that is closest to the upstream sidewall, and wherein the top plate is disposed at an angle to the entry flow path for receiving the entry air flow and guiding it through the entry opening;
• and
• (c) at least one filter unit disposed in the housing along the exit flow path on an opposite side of the top plate from the paint-receiving surface, the filter unit having an upstream face, and at least a portion of the upstream face that is closest to the edge of the top plate is disposed downstream of the edge of the top plate, thereby mitigating flow of material from the overspray-receiving surface to the filter unit.

A filtering apparatus comprising:

• (a) an elongated housing configured to receive overspray air along an entry flow path, which is substantially parallel to the length of the housing, and guide the overspray air along an exit flow path that is transverse to the entry flow path, the housing defined by at least an upstream sidewall, lateral sidewalls and a downstream sidewall, the downstream sidewall having an opening through which the overspray air exits the housing;
• (b) a top plate mounted to the housing and having an overspray-receiving surface toward which overspray air in the entry flow path is directed, wherein an entry opening is defined by the upstream sidewall, the lateral sidewalls and an edge of the top plate that is closest to the upstream sidewall, and wherein the top plate is disposed at an angle to the entry flow path for receiving the entry air flow and guiding it through the entry opening;
• (c) a lower plate disposed adjacent to, and spaced from, the top plate, thereby forming a chamber between the top plate and the lower plate;
• and
• (d) at least one filter unit disposed in the housing along the exit flow path on an opposite side of the top plate from the paint-receiving surface, the filter unit configured to receive the overspray air along the exit flow path.