Scrubber unit for a paint booth
A paint booth assembly includes a paint booth having a pair of side walls and a flood sheet extending between the pair of side walls to separate the paint booth between a spray portion disposed above the flood sheet and a paint recovery portion disposed below the flood sheet. The flood sheet defines at least one flood sheet opening, and a scrubber unit extends down from the flood sheet opening to establish a shared path of fluid communication of a flow of water from the flood sheet and a downdraft of process air from the spray portion to the paint recovery portion. A scrubber pod is disposed within the scrubber unit and defines a plurality of perforations to induce an initial mixing of the paint particles entrained in the downdraft of process air into the flow of water.
1. A scrubber unit for receiving a shared path of fluid communication of a flow of water from a flood sheet and a downdraft of process air containing air and paint particles from a spray portion of a paint booth, the scrubber unit comprising:
a mixing chute extending downwardly from a mixing chute mouth to a mixing chute exit for establishing a residence time for the shared path of fluid communication to allow a mixing of the paint particles entrained in the process air into the flow of water; and
a scrubber pod removably disposed within said mixing chute and extending from a pod top being open adjacent said mixing chute mouth to a pod bottom being closed along a bottom edge; and
said scrubber pod defining a plurality of perforations disposed between said pod top and said pod bottom to induce an initial mixing of the paint particles entrained in the downdraft of process air into the flow of water during an early portion of the residence time of the shared path of fluid communication in said mixing chute.
2. The scrubber unit of claim 1 , wherein said scrubber pod includes a pair of pod surfaces converging towards one another from said pod top to an integral connection extending along said bottom edge to establish said closed pod bottom and define a generally triangular prism shape for said scrubber pod.
3. The scrubber unit of claim 2 , wherein said plurality of perforations are disposed in a series along each of said pair of pod surfaces and extend longitudinally from adjacent said pod top to adjacent said bottom edge, and each of said plurality of perforations having a rhombus shape.
4. The scrubber unit of claim 1 further comprising:
said mixing chute including a throat disposed between said mixing chute mouth and said mixing chute exit to define a body portion of said mixing chute extending between said mixing chute mouth and said throat and a terminal portion of said mixing chute extending between said throat and said mixing chute exit; and
said throat narrowing from said body portion to said terminal portion for increasing a velocity of the flow of water and the process air in the mixing chute to induce a subsequent mixing of the paint particles entrained in the downdraft of process air into the flow of water.
5. The scrubber unit of claim 4 further comprising:
a deflection skirt extending outwardly from said body portion of said mixing chute and including a collar extending transverse from said body portion of said mixing chute and a lip sloping downwardly from said collar.
6. The scrubber unit of claim 1 further comprising:
a funnel extending downwardly from a funnel mouth to a funnel exit disposed adjacent said mixing chute mouth; and
said funnel having four trapezoidal sheets sloping downward from said funnel mouth to said funnel exit for increasing a velocity of the downdraft of process air and the flow of water approaching said scrubber pod.