Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
  • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
  • B05B13/0278—Arrangement or mounting of spray heads
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
  • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
  • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
  • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
  • B05B15/658—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits the spraying apparatus or its outlet axis being perpendicular to the flow conduit

Definitions

• the invention is based on an arrangement for generating flat spray fields, such as those produced by linear or flat spray nozzles, according to the preamble of the main claim.
• the spray fields are in both horizontal and vertical dimensions for a wide variety of applications, such as. B. cooling, cleaning, moistening, sprinkling, etc. generated.
• An essential requirement of flat spray fields is a closed and even application of the area. Examples of nozzle arrangements are shown in a catalog sheet from the nozzle manufacturer Lechler (Edition 2000, p. 13). In the case of a linear arrangement of flat jet and also tongue nozzles for generating a horizontal spray field, a nozzle spacing is recommended which ensures an overlap of the jet width of 1/3 to 1/4.
• the nozzles should also be aligned at an angle of approx. 5 to 15 ° to the pipe longitudinal axis.
• the inclination can be dispensed with, but in the area where the jets strike, Surface also an overlap of the circular areas of the application by approx. 1/3 to 1/4 is recommended.
• DE 195 14 923 C2 describes a method for securing escape and rescue from smoke, heat and pollutants from rooms with long escape routes, in which a water mist with a low exit and propagation speed is generated in the room.
• the particle density must have the concentration required to bind smoke, heat and pollutants.
• the particle size of the water mist must be set so that the water particles slowly sink from their point of exit.
• An optimal droplet diameter at which the mist remains breathable is in the range between 10 and 100 ⁇ m.
• the particle density determined by the number of water mist nozzles and their volume flows was set to 2 l / m 3 * min -1 in the example given.
• a corresponding arrangement is shown in DE 100 19 537 AI.
• the mist-producing outlet devices are attached along spray arches, which are arranged one behind the other over the entire length of the room and / or its escape routes and transversely to the direction of escape, following the clearance profile of the room and / or its escape routes.
• spray arches which are arranged one behind the other over the entire length of the room and / or its escape routes and transversely to the direction of escape, following the clearance profile of the room and / or its escape routes.
• increases by Storage of spray particles their volume and weight so that they sink faster. The larger the spray particles become, the more ineffective they become for flue gas cooling and scrubbing.
• the nozzle arrangement according to the invention with the characterizing features of the main claim has the advantage that the entire effective spray field, regardless of whether it is located in a horizontal or vertical plane, has the homogeneity necessary for effective smoke, heat and pollutant binding
• the technical implementation of the arrangement according to the invention ie the dimensioning and the determination of the radial and axial
• the nozzles are deflected according to the requirements of the room in which the flat spray field is to be generated.
• This consists in arranging several nozzles next to one another in a nebulization module, which, however, due to their different spray angle and their different radial and axial deflection, do not spray in a line-like manner, but spatially and thus from the nebulization module to the desired spray field to a different extent.
• the axial deflection causes a slight displacement of the spray surfaces, quasi a toothing of the spray surfaces applied to a gap.
• the individual spray cones begin to touch one another at a certain distance from their outlet openings.
• the spray angle, throughput and radial and axial deflection are chosen so that this contact lies in one plane, the so-called spray field plane.
• the above-mentioned prevail in this level. favorable conditions with regard to the homogeneity of the necessary for effective smoke, heat and pollutant binding
• Spray droplets The different sizes of the spray angles of nozzles arranged next to one another is necessary so that the spray cones do not interfere with one another before this level is reached.
• the different lengths of travel due to the different radial and axial deflection of the nozzles from the spray droplets to this level are compensated for by correspondingly different spray angles.
• the smallest spray angle must have those nozzles that supply the spray field in the areas furthest away from the pipe system.
• all nozzles spray with the same intensity, ie that the same amount is sprayed on per unit area sprayed in one time unit.
• the angle difference of the radial deflection of adjacent nozzles is 15 ° to 45 °. This area for the radial angle difference between adjacent nozzles has proven to be practical, although these angular differences can vary in size from nozzle to nozzle.
• hollow cone nozzles are used.
• the angle difference of the axial deflection of adjacent nozzles between 1 ° and 10 ° has proven to be sufficiently suitable.
• a cylindrical filter is arranged in the nebulization module or modules. This prevents dirt particles from entering the nozzles and thereby blocking them.
• the cylindrical design of the filter also prevents the nebulizing module or the entire pipe system from becoming blocked, since it does not hinder their axial direction of passage.
• Fig. 1 is a nebulization module with four nozzles and Fig. 2 is a schematic representation of the flat spray field generated by the nebulization module shown in Fig. 1.
• a spray arch installed following the clearance profile of a traffic tunnel
• such a spray arch has pipe sections rising vertically up to the ceiling of the tunnel, rising slightly below the ceiling, via horizontal to slightly falling pipe sections which also run vertically on the opposite wall and carry a liquid medium.
• the pipe sections consist of so-called water mist modules that have outlet openings for the medium.
• the individual water mist modules are connected directly or via short pipe sections.
• Fig. 1 shows such a water mist module 1 in the horizontal installation position of a spray arc for generating a vertical spray field.
• a spatial coordinate system xyz is drawn on its right end face, which is intended to identify the position of the water mist module 1 in relation to a traffic tunnel (not shown).
• x the width extension of the traffic tunnel, to which the longitudinal axis of the water mist module 1 is parallel when the water fog module 1 is arranged horizontally, with y its extension in height and with z its length extension, i.e. the course of the roadway.
• the water mist module 1 with its outlet openings, has water mist nozzles 2 to 5 directed essentially opposite to the z direction, which are arranged on the water mist module 1 with the radial spray angles ⁇ and axial spray angles ß mentioned in Table 1, the values for the spray angles ⁇ and ß on a horizontal arrangement of the Obtain water mist module 1.
• the radial spray angle ⁇ in the yz plane and the axial spray angle ß in the xz plane are each measured from the positive z axis.
• the realization of a vertical, flat spray pattern also includes a special spray angle ⁇ and an adapted volume flow. Both are listed in Table 2 for the present example. This table also lists the characteristics of a vertical planar spray pattern generated with these parameters, in fact only the values of an imaginary plane of the throwing parabola of the water mist emerging from the water mist nozzles 2 to 5, 3.0 m away from the water mist module 1 ,
• the water mist nozzle 2 generates a water mist cone 6, the water mist nozzle 3 a water mist cone 7, the water mist nozzle 4, a water mist cone 8 and the water mist nozzle 5 a water mist cone 9.
• the cross-sectional areas of the water mist cones 6 to 9 form in a plane approximately 3.0 m from their exit points from the water mist nozzles 2 to 5, measured in negative z direction, a vertical, flat spray field 10, as can be seen from FIG. 2.
• the spray diameter of all water mist cones 6 to 9 is the same size at this point and is approximately 1.70 m, which corresponds to a spray area of 2.35 m 2 in each case. This is achieved by the different parameters of the water mist nozzles 2 to 5 mentioned in Table 2.
• the spray distance i.e. the actual length of the spray cone from its exit point to this level, is shown in column 3 of table 2. So that there are no gaps in the spray field, slight overlaps of the water mist cones 6 to 9 have to be accepted.
• the volume flow of the water mist nozzles 2 to 5 becomes smaller with a falling spray angle ⁇ . In this example, the volume flow is reduced by half.
• approx. 42 1 / min of water are required per water mist module 1 in order to achieve a range of 3.00 m with an effective width of 1.50 m.
• the water module 1 For the generation of a horizontal spray field, the water module 1 is rotated downward about the x-axis by 90 °. The radial or axial position of the water mist nozzles 2 to 5 with respect to one another is retained, but the radial spray angle ⁇ in the above measurement rule is 90 ° greater due to the rotation accepts.
• the water mist nozzles 2 to 5 used have the same spray angle ⁇ as in the arrangement for the vertical planar spray field, only the volume flow is the same for all water mist nozzles 2 to 5 and is 10.5 1 / min in the present example. If the water mist module 1 thus arranged is placed under water pressure, a horizontal, flat spray field is created which also has spray surfaces of the same size per water mist nozzle 2 to 5 and a constant droplet spectrum and a constant droplet density.
• water mist modules 1 can also be used in the vertical guidance of spray arches. However, they do not necessarily have to generate even spray fields in this area. Their main function here is to seal the area between the vertical water mist curtain and the side walls of the traffic tunnel so that no smoke and no pollutants can get through here.

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• 2003
  • 2003-05-21 DE DE10323356A patent/DE10323356A1/de not_active Withdrawn
• 2004
  • 2004-05-19 AT AT04738538T patent/ATE353709T1/de not_active IP Right Cessation
  • 2004-05-19 WO PCT/DE2004/001068 patent/WO2004105957A1/fr active IP Right Grant
  • 2004-05-19 DE DE502004002919T patent/DE502004002919D1/de not_active Expired - Lifetime
  • 2004-05-19 EP EP04738538A patent/EP1656206B1/fr not_active Expired - Lifetime

Non-Patent Citations (1)

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