WO1997005941B1 - Device for separating fumes, oil droplets and/or dust from a stream of air - Google Patents

Abstract

The device proposed has, connected to a suction fan, a housing into which the air stream is sucked from underneath through a long-sided inlet (15). Disposed over the inlet (15) is an essentially roof-shaped cover (8). On each side of the inlet (15) is a through section (6) which is joined to the inlet and in which are disposed at least two deflection and precipitation elements (10) which force the air stream to follow an essentially meander-shaped path between the curved trough section (6) below and the roof-shaped cover (8) above. Together with the curved outer wall, the trough section and cover form an air-exit gap (12). The deflection and precipitation elements (10) are designed as parallel elongate spirally curved separation sections.

Claims

 CHANGED CLAIMS [received at the International Bureau on March 11, 1997 (11-03.97); original claims 1 and 7 changed; all other claims unchanged (4 pages)] 1. A device for separating haze, grease and dust ^¬ particles from an air stream, with a connected to a suction blower housing (3), in which during the operating state, the air flow from the Gehause¬ underside via an elongated inlet ( 15), which is bounded by upwardly converging guide profiles (4), a substantially roof-shaped cover (8) for the inlet (15) and at both sides of the inlet (15) at these adjoining groove profiles (6), whereby the cover (8) partially overlaps the channel profiles (6), in which case at least two deflecting and separating elements (10) extending substantially parallel to the inlet (15) form a substantially maander-shaped air flow between to force the channel profile (6) and the deflecting or separating elements (10), the latter defining an air outlet gap (12) with the outer part of the channel profile (6), characterized in that the Deflection and separation elements (10) of mutually approximately parallel, spiral-shaped segments are formed, which do not overlap one another in the vertical direction, so that liquids dripping from the individual separation elements (10) pass directly into the channel profile (6). 2. Device according to claim 1, characterized in that the channel profile (6) is curved in a spiral shape and preferably has additional Flussigkeitsabscheideschikanen (lla, c), which latter possibly also (llb) ange¬ to the deflecting and separating elements (10) ange¬ , 3. Device according to claim 1 or 2, characterized gekenn¬ characterized in that the cover (8) and the outermost end of the Rinnenproflls (6) are curved and opposed so that in operation the exhaust air through the outlet MODIFIED BLAπ (ARTICLE 19) - 13- gap 12 at an acute angle of z..B. about 45 ° upwards in the direction of an imaginary vertical center plane through the device is blown out, so that an additional condensate precipitation takes place at the top of the cover profile (8) and all possible water vapor particles back into the gutter profile (6) can run back. 4. Device according to one of claims 1 to 3, characterized in that with the curved cover profile (8) at least two deflecting and separating elements (10a, b) are connected, which in the upper region a spitz¬ angled, longitudinal, downwardly open chamber (7), as a result of which resulting air accumulation in this area no fat deposition can take place. 5. Device according to one of the preceding claims, characterized in that the spiral Rmnen- profile (6) and the deflection and separation elements (10) are shaped so that the flow rate of the maander-shaped air flow to the exit edge (12) increases evenly or stepwise becomes, so that the centrifugal force separation acts equally on large and small particles and a high Abschei¬ degradation is achieved. 6. Device according to one of the preceding claims with a Spülwasservorlage in the gutter profile ', 6), characterized in that the gutter profile (6) is formed aus¬ so high that effectively entrainment of water droplets in the exhaust air stream and the fat and water vapor particles be deposited or collected in the region of the lowest point (5) in the channel profile (6), in which a - in particular periodic - cleaning is possible by means of rinsing liquid. - 14- 7. The device according to claim 6, characterized in that at the lowest point (5) of the provided with a drop Rinnenproflls (6) a Spulwasserablauf (9) is provided and thereby in the operating state in the rinsing> mitgefuhrten fat deposits directly and without deflection by deflecting or Separation profiles (10) can flow through the Ab¬ run (9), wherein the Spulwasserablauf (9) is dimensioned so that it allows the formation of Rinsing water mask. 3. A device according to claim 5, characterized in that the channel profile (6) formed hyperbelformig

9. Device according to one of the preceding claims, characterized in that in the region of the vertex of the curved Abdeckproflls (8) on the profiled rod em supply tube (13) for the supply of Spulflussig- speed and below this tube (13) a baffle plate (14) , Which of the latter with the covering profile (8) delimits a passage gap (16) for the winding liquid (16) which discharges into the channel profile (6) 10. The device according to any one of the preceding claims, characterized in that the forming the Abscheidetlachen profile walls of the Rinnenproflls (6) and / or the deflection and separation elements made of thermally conductive material and are preferably provided with a sanded fif surface or surface coating, and during operation, all separating plates can be acted upon continuously or intermittently with cold or warm wetting or rinsing liquid. 11. Device according to one of the preceding claims, characterized in that it m a flat ceiling (1) is installed with Zuluftaustrittselementen over GLANDERTES SHEET (ARTICLE 19) - Which of the inlet (15) can be beauf¬ beat with a supply air. 12. Device according to one of the preceding claims, characterized in that in the housing acting as a fire detection temperature sensing device (2) is installed, via which an electrical control circuit of the supply means for the wetting liquid in the sense of flooding of the device is betatigbar.