Spray booth

Details Spray booth Spray booth

1992-02-23

1994-01-11

Joyce, Harold

Ventilation

Workstation ventilator

Spray booth

454 53, B05B 1512

Patent

active

052776522

ABSTRACT:
A spray booth having a work area for an operator. A first fan assembly located in the back wall of the booth produces an exhaust air stream. Filter means are located between the first fan assembly and the work area. A second fan assembly supplies a make-up air stream and a laminar diffuser is connected to the second fan assembly and positioned above the operator to provide a downwardly directed air piston in the work area surrounding the operator In the preferred embodiment, the exhaust fan has a capacity of between about 340 and 400 CFM per foot width of the spray booth. In the preferred embodiment, the make-up air fan has a capacity of between about 230 and 300 CFM per foot width of the spray booth. Thus, in the preferred embodiment, the make-up air fan has a capacity of between about 2/3 and 3/4 the capacity of the first fan assembly. Also, in the preferred embodiment, the laminar diffuser is located about 1 foot above the operator, is about 4 feet by 4 feet in area and produces a flow rate of between about 125 and 150 fpm. This amount is sufficient to provide a secure environment for the operator.

REFERENCES:
patent: 4237780 (1980-12-01), Truhan
patent: 5127574 (1992-07-01), Mosser et al.
patent: 5133246 (1992-07-01), Campbell

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