Painting booth on conveyor line

Claim 1

A painting booth through which a conveyor passes substantially horizontally to transfer articles to be painted, the booth comprising: two spraying spaces located with a distance therebetween in the direction of the conveyor, each having a paint spraying machine disposed therein; a buffer space which is interposed between said two spraying spaces so as to occupy an entire length of said distance and adjoin both of said two spraying spaces and is smaller in cross-sectional area than either of said two spraying spaces, at least one first duct for blowing air into each of said two spraying spaces through air inlets, each said spraying space having an at least partly grated floor, said air inlets provided for said at least one first duct being located on the ceiling of the spraying space such that a flow of air is established in a direction generally vertically downwards substantially in every region of each of said two spraying spaces, and a second duct for blowing air into said buffer space through two sets of air inlets, said sets of air inlets being located in said buffer space, having one set of inlets directed toward one adjacent spraying space and the other set of inlets directed toward the other adjacent spraying space such that air flows in said buffer space generally horizontally and towards said two spraying spaces at velocities lower than the velocity of said flow of air in each of said two spraying spaces.