US2449203A - Spray booth - Google Patents

Description

p 1948. A. R. CLARK ETAL 4 SPRAY BCOTH Filed Jan. 1, 1944 1 2 Sheets-Sheet 1 IN VEN T 0R5 AIber-f Clark Reyna/all Kq'fl/e BY LUPCW ATTORNEY Sept. 14, 1948. CLARK ETAL 2,449,203

SPRAY BOOTH Filed Jan. 1, 1944 .2 Sheets-Sheet 2' IN V EN TORS Alber) Clark Re na/d Kihle A T TORNE Y Patented Sept. 14, 1948 2,449,203 SPRAY acorn Albert R. Clark and Reynold 5. Kittie, Toledo,

Ohio, assignors to The De Vilbiss Company, Toledo, Ohio; a corporation of Ohio Application January 1, 1944, serial No. 516,684

(Cl. til-60) 1 Claim. 1

This invention relates to a spray booth in which spray coating operations are carried on and with which are associated means for drawing off the fumes and overspray arising from the operations, and has reference particularly to such a spray booth for use with coating materials, the overspray of which is inclined to be dry and does not readily adhere to the surfaces of thespray booth or of the exhaust piping. 1

A principal object of the invention is the provision of baiiies for creating a uniform flow of air through the spray booth. a r

A further object is the provision of baflies which may be easily and quickly removed for cleaning purposes.

A still further object is the provision ofsimple but effective means for supporting and locating the baffles.

Another object is the provision of means for increasing the rigidity and sturdiness of the spray booth.

Additional objects and advantages of the invention will become apparent through a reading of the following description in conjunction with the drawings in which:

Figure 1 is a perspective view with parts broken away of a spray booth embodying the invention;

Figure 2 is a rear perspective view of a bafiie forming a part of the spray booth;

Figure 3 is a rear elevation of a triangular hanger for the bafiie supporting bars;

Figure 4 is a vertical section of the forward edge of the top of the spray booth taken on the line t4 of Figure 1; and

Figure 5 is a perspective View with parts broken away of the bottom forward corner of the left side of the spray booth.

Referring more in detail to the drawings, particularly to Figure 1, the spray booth embodying the invention has a left side wall I composed of panels or sections 2 and. 3; a right side wall t composed of sections 5 and 6; rear wall 5 composed of sections 8 and 9; and roof H] composed of sections I! and I2.

The sections of each wall and roof are bolted directly together through adjoining upturned edges.

Left side wall I is fastened to the roof it through angle iron l3 to which each is bolted. The right side wall ll is similarly fastened to the roof it by an angle iron M. In like manner the rear edge of the right side wall is fastened to the rear wall by angle iron l5. The angle irons connecting the rear wall with the roof and the left side wall are not shown.

l l 2 The article to be spray coated is generally placed within the spray booth upon a turntable and the spray operator stands slightly outside of thebooth facing the object and directing the spray gun toward the object and the rear of the booth. The spray fumes and overspray are drawn away from the. operator and prevented from escaping into the surrounding atmosphere by a strong movement of air into the spray booth and out an exhaust opening or openings in the rear which may be in the rear Wall as shown at E5 or in the rear portions of the sidewalls or roof, whichever may be more. practical. An exhaust fan or blower may be set directly in the opening or in the exhaust piping some distance from the booth. Without bafilesfor distributing or spreading the air flow across the booth .before entering the exhaust outlet there would be a concentrated flow of air going directly to the exhaust outlet with back eddies in the corners and along the sides carrying spray residue out the front of the booth.

In this invention baffles I! are utilized to distribute the fiow of air across the booth. The forward face of each baffle is flat with the edges rolled to the back. Along the center of the back is welded an angle iron strut [8 to which are welded two spaced downwardly-directed hooks I9. Each balile ll is supported in position by placing hooks it into holes 20 in angle iron supporting bars El, 22, 2S, and 24 supported transversely across the booth upon triangular hangers 25, 26, 2?, 28, 29, and 3d. The hanger 28 which supports the center ends of upper bars 22 and 24, is held by one of the bolts fastening together the roof panels or sections it and I2. To prevent hanger 28 from pivoting upon the bolt a short angle iron brace M is welded to the hanger. The upper side of the brace 3i bears against the under edge of section l2.

Likewise, triangular hanger 2'! is held by a bolt between the sections 8 and 9 of the rear wall of the booth and is prevented from turning through the contact against section ll of brace piece 32.

The hanger 26 is suspended from a bolt between the edge of roof section l2 and angle iron 14. The hanger 25 is supported upon a bolt between back section 9 and angle iron l5. Both hangers 25 and 2% have an inwardly extending brace member contacting the adjoining section to prevent the hanger from turning. Similarly triangular hangers 2s and 30 (the latter is not shown in drawing) extend respectively from between back section 8 and the angle iron connecting back booth havie' V shaped member'- 33 extending from both sides' to support the center ends of the angle bars.

To keep the sections of each side wall and of the rear wall properly aligned and also to provide a means of anchoring each wall to the floor, a U shaped channel iron is slipped overthebottoni ends of the sections. Each ehenneiiron has-protruding ends with holes through which it may be bolted to the floor. The channel iron-under side Wall I is indicated at 34 while channel 35 supports wall 4 and channel 36 anchors rear wall 1. In Figure 4 is shown a vertical section of the forward edge of the tODIOf the spray booth. I {The fishaped beam 31' runs across the full width of theepmy booth providing strength and rigidity" t'pztne-roof. It is heldi'n' place by being bolted to the forward upturned edges of roof panels orsections H and I2. Inserted between the beam 3T and the panel edges is a water curtain 38 which serves to" form a sheet of water down across the booth opening in case a fire is started in thebo'ot'h and water sprinklers, which are normally s'et througfispaced openings in the booth; roof, are time put into operation; Water from the s'prinklets strikes the'rearwardly facings'houldei" 39101? the curtain as and falling therefrom forms the downward flowing sheet of water.

Wiii1e' a particular embodiment of the inven tioii has been shown, it should be understood; of

course, that many modifications may be made without departing from the spirit of the invention.

We claim:

In a spray booth having an open front end, a rear end for the exhaust outlet and a roof with anumber of sections fastened to each other along adjoining sides extending? from the-rear and toward the front of' the booth, a supporting beam of T-shaped cross section; extending across the full width of the booth with the vertical portion fastened to the forward edges of the roof sections, anda Water deflecting curtain held betweentheQvertical portion of the beam and the forward edgesof the roof sections and extending downwardly a short distance into the spray ALBERT R. CLARK. REYNOLD J. KITTLE.

names-New CITED 'Ehe following-references are of record in the file of this patent:

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