(19)
(11) EP 0 202 110 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.05.1987 Bulletin 1987/20

(43) Date of publication A2:
20.11.1986 Bulletin 1986/47

(21) Application number: 86303632

(22) Date of filing: 13.05.1986
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 14.05.1985 US 733971
14.05.1985 US 733972

(71) Applicant: FLANDERS FILTERS, INC.
 ()

(72) Inventors:
  • Pittman, Clarence Bruce
     ()
  • Cadwell, George Harold, Jr.
     ()
  • Bowers, Cecil William
     ()

   


(54) Laminar flow clean room


(57) A clean room having provision for supplying filtered air vertically therethrough under substantially laminar flow conditions includes a filter bank (16) comprising a supporting latticework- (30) composed of a plurality of interconnected members which define rectangular open areas, and a plurality of high efficiency air filters (74) positioned on the supporting latticework. Each of the members (34,36) of the latticework has a generally V-shaped outline in cross section with the angular extent of the V-shaped outline being adapted to provide a substantially laminar flow therealong, and so as eliminate any substantial turbulence below the members (34,36) of the latticework. Such turbulence has been found to entrain dust or dirt particles and move the same laterally through the room, and the elimination of such turbulence effectively eliminates lateral migration of dust or dirt particles.






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