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Machine translation
1. (WO1980002518) A METHOD AND DEVICE FOR EXTRACTING CONTAMINATED AIR BY SUCTION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/002518    International Application No.:    PCT/SE1980/000147
Publication Date: 27.11.1980 International Filing Date: 20.05.1980
IPC:
B08B 15/00 (2006.01)
Applicants:
Inventors:
Priority Data:
7904443 21.05.1979 SE
Title (EN) A METHOD AND DEVICE FOR EXTRACTING CONTAMINATED AIR BY SUCTION
(FR) PROCEDE ET DISPOSITIF POUR L"EXTRACTION PAR ASPIRATION D"AIR CONTAMINE
Abstract: front page image
(EN)In a method of removing contaminated air by suction, ejector air is blown towards a tangentially directed inlet slot (3) in a cylinder (2a) comprising part of an air extractor (1) The contaminated air is entrained in this way to form a rotating air stream in the interior of the cylinder, said air stream also being imparted an axial movement component as a result of under pressure prevailing in the interior of the cylinder. The cyclone effect of the air stream in the cylinder is used to separate contaminated particles from the air and to deposit the particles on the inside of the cylinder. The air stream can also be caused to pass through a cylindrical filter (11) arranged centrally in the cylinder (2a). Blow-openings (8) for ejector air are suitably located in the vicinity of the end of a tangentially directed cylinder-extension portion (2b). The cylinder can be flushed to remove adhering particles therefrom, e.g. by means of a nozzle which is arranged in the slot (3) and which delivers a tangentially directed stream of liquid.
(FR)Lors d"un procede d"enlevement par aspiration d"un air contamine, de l"air d"ejection est souffle vers une echancrure d"entree tangentiellement dirigee (3) dans un cylindre (2a) comprenant une partie d"un extracteur d"air (1). L"air contamine est entraine de cette maniere pour former un courant d"air en rotation dans l"interieur du cylindre, ledit courant d"air ayant egalement une composante de mouvement axiale resultant d"une depression dans l"interieur du cylindre. L"effet de cyclone de ce courant d"air dans le cylindre est utilise pour separer des particules contaminantes dans l"air et y deposer ces particules sur l"interieur du cylindre. Le courant d"air peut aussi circuler au travers d"un filtre cylindrique (11) dispose centralement dans le cylindre (2a). Les ouvertures de soufflage (8) pour l"air d"ejection sont localisees de maniere convenable au voisinage de l"extremite d"une portion d"extension de cylindre orientee tangentiellement (2b). Le cylindre peut etre lave afin d"en eliminer des particules adherentes, par exemple au moyen d"une buse qui est disposee dans l"echancrure (3) et qui delivre un courant de liquide dirige tangentiellement.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)