EP0133253B1 - Leitschaufel für die Umlenkung einer Fluidströmung - Google Patents

Leitschaufel für die Umlenkung einer Fluidströmung Download PDF

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Publication number
EP0133253B1
EP0133253B1 EP19840108570 EP84108570A EP0133253B1 EP 0133253 B1 EP0133253 B1 EP 0133253B1 EP 19840108570 EP19840108570 EP 19840108570 EP 84108570 A EP84108570 A EP 84108570A EP 0133253 B1 EP0133253 B1 EP 0133253B1
Authority
EP
European Patent Office
Prior art keywords
shells
flow
shaft according
opening
venting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19840108570
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0133253A2 (de
EP0133253A3 (en
Inventor
Wilhelm Fritz Morschheuser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rogal Gesellschaft fur Angewandte Lufttechnik Mbh
Original Assignee
ROBERTSON GAL GESELLSCHAFT fur ANGEWANDTE LUFTTECHNIK MBH
Rogal Gesellschaft fur Angewandte Lufttechnik Mbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ROBERTSON GAL GESELLSCHAFT fur ANGEWANDTE LUFTTECHNIK MBH, Rogal Gesellschaft fur Angewandte Lufttechnik Mbh filed Critical ROBERTSON GAL GESELLSCHAFT fur ANGEWANDTE LUFTTECHNIK MBH
Publication of EP0133253A2 publication Critical patent/EP0133253A2/de
Publication of EP0133253A3 publication Critical patent/EP0133253A3/de
Application granted granted Critical
Publication of EP0133253B1 publication Critical patent/EP0133253B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates

Definitions

  • the invention relates to a ventilation shaft in which the rectilinear edge of an opening at the inlet is surrounded by a guide vane at a distance for the purpose of deflecting a fluid flow.
  • GB-A-826 222 it is known in a ventilation shaft to provide guide vanes in the form of mudguards which are arranged at the entrance to the ventilation shaft in such a way that splash water, in particular rain, is prevented from penetrating into the ventilation opening, so that even in the case precipitation does not have to close the ventilation opening.
  • the invention has for its object to provide a venting chac h t with a guide vane such that the otherwise considerable mounting effort for the guide vane can be significantly reduced. Above all, this is to prevent the fastening means from exerting a restrictive influence on the effective flow cross section. Furthermore, an effective damping of the considerable flow noises that often occur especially in the deflection area is to be achieved.
  • the new vent shaft reliably fixes the guide vanes within the opening in a particularly simple manner.
  • the assembly rod forms a closed structure which is completely fixed within the opening.
  • the double-shell design of the new guide vane is of considerable advantage in terms of flow technology, because flow disturbances of any kind can be avoided in principle by appropriate design of the guide vane cross-section limited by the shells.
  • the proposed geometric arrangement of the respective curved shells ensures that the flow lies behind the opening edge on the wall of the shaft.
  • connection of the shells to one another is particularly advantageous in terms of flow technology when the distance between the shells is substantially the same if it takes place in a rounded form at the flow inlet. This avoids any disturbance of the flow before the flow enters the opening.
  • the desired, closed construction is then achieved in that the two shells are penetrated by the assembly rod at their downstream end.
  • the space between the two shells can expediently be filled with sound-absorbing or sound-insulating material.
  • sound-absorbing or sound-insulating material both cell constructions and mineral fiber fillings are suitable.
  • the sound-absorbing effect is further enhanced by the fact that one of the two shells consists of a perforated sheet.
  • a further fluidic and static improvement of the guide vane occurs when one of the two shells consists of a trapezoidal profile sheet which is curved in the longitudinal direction of its profile in accordance with the curvature of the shells.
  • Such profiling gives the shell construction a particular strength and also enables the inflowing air to be guided very tightly.
  • the generally rectangular design of the inlet opening makes it possible to provide guide vanes with mutually opposite edges, between which the mounting rod extends.
  • the distance between the guide vanes is then advantageously 80% of the distance between the edges from one another, these guide vanes being arranged symmetrically with respect to the fluid line.
  • the new guide vane can be improved in terms of flow, fastening technology and statics in that the radius of curvature is approximately 40% of the distance between the edges of the opening, the arrangement then being able to be such that the shells are over 50% of their extent in the direction of flow lie outside the opening. In this way, although a torque is exerted around the connection of the shells to the mounting rod, the attachment of both shells to the mounting rod prevents any deviations from the intended position.
  • the fact that the shells have end sections which are parallel to the direction of flow also contributes to this and to the turbulence-free introduction of the flow, even if a duct connects to the opening, the walls of which are expediently at an angle of about 7 ° in each case diverge away from the direction of flow.
  • Figure 1 shows the lower part of a ventilation shaft, as it is used in a roof vent.
  • An opening 6 can be seen, which is delimited by the rounded edges 4.
  • the opening 6 is penetrated in the direction of the arrows 5 by the air flow to be discharged.
  • the two guide vanes 10, which are held by means of the mounting rod 8, are symmetrical to the flow center 7. The latter extends perpendicular to the flow between the diverging shaft walls 15 to which it is attached.
  • the guide vanes 10 are in turn rigidly connected via their two shells to the mounting rod 8 at their downstream end sections.
  • the ends of the guide vanes located at the flow inlet have connections of their shells in a rounded shape 9.
  • each of the guide vanes there is a center of curvature 16 outside the flow cross-section, around which they are bent with the radius of curvature 14.
  • the latter is approximately 40% of the distance that the edges 4 have from one another.
  • This edge distance is named 1.00 in FIG.
  • the other dimensions entered in FIG. 1 are related to this.
  • the shaft walls 15 diverge at an angle of 7 ° to the flow direction 5 and have a height of 0.3 of the edge spacing.
  • the shaft is followed by a more divergent section that rises at 38 ° from the horizontal.
  • the shells have sheets 1 perforated on both sides, between which sound-insulating material 2 is arranged.
  • the shells can also consist of smooth sheet metal 3 on both sides.
  • FIG. 2C shows a trapezoidal profiled sheet 13 on the outside of a guide vane, it being noted that this is a top view. In this case, the inner sheet is perforated.
  • FIG. 2D shows the arrangement of the trapezoidal profile sheet 11 on the inside, whereas the outer sheet 13 has a perforation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Duct Arrangements (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP19840108570 1983-07-23 1984-07-20 Leitschaufel für die Umlenkung einer Fluidströmung Expired EP0133253B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833326592 DE3326592A1 (de) 1983-07-23 1983-07-23 Leitschaufel fuer die umlenkung einer fluidstroemung
DE3326592 1983-07-23

Publications (3)

Publication Number Publication Date
EP0133253A2 EP0133253A2 (de) 1985-02-20
EP0133253A3 EP0133253A3 (en) 1986-09-17
EP0133253B1 true EP0133253B1 (de) 1988-05-18

Family

ID=6204738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840108570 Expired EP0133253B1 (de) 1983-07-23 1984-07-20 Leitschaufel für die Umlenkung einer Fluidströmung

Country Status (2)

Country Link
EP (1) EP0133253B1 (enrdf_load_stackoverflow)
DE (1) DE3326592A1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT402343B (de) * 1993-04-28 1997-04-25 Krantz H Gmbh & Co Auslass für eine laminare luftströmung
DE29621845U1 (de) * 1996-12-03 1997-06-12 Sick, Wolfgang, 22955 Hoisdorf Luftzuführ- bzw. abzugseinrichtung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE867605C (de) * 1942-07-31 1953-02-19 Siemens Ag Luftfoerderungseinrichtung, insbesondere fuer Elektrofilter zur Reinigung von Raumluft u. dgl.
GB826222A (en) * 1955-07-06 1959-12-31 Colt Ventilation Ltd Improvements in ventilators
DE1650079A1 (de) * 1967-07-14 1970-08-27 Licentia Gmbh Vorrichtung zur Verbesserung des Wirkungsgrades von stark erweiterten Diffusoren
DE6751686U (de) * 1968-07-24 1969-03-06 Gal Ges Fuer Angewandte Luftte Jalousielement fuer mehrfachanordnung
FR2262769A1 (en) * 1974-03-01 1975-09-26 Strulik Wilhelm Insulating air conditioning duct - formed from incombustible sheet grooved to permit bending, has external seal and internal protection
GB1502355A (en) * 1974-09-18 1978-03-01 Licencia Talalmanyokat Soundattenuating devices for silencing gaseous flow in ducting
DD159446A1 (de) * 1981-06-09 1983-03-09 Herbert Bernhard Einrichtung zur umstroemung der in durchstroemteilen vorhandenen einbauten
DE3149077A1 (de) * 1981-12-11 1983-06-16 Ruhrkohle Ag, 4300 Essen Schalldaempfer fuer grubenluefter
DE8202119U1 (de) * 1982-01-26 1982-10-28 Schlick, Werner, 1000 Berlin Stroemungs-leitfluegel

Also Published As

Publication number Publication date
EP0133253A2 (de) 1985-02-20
DE3326592C2 (enrdf_load_stackoverflow) 1991-10-31
EP0133253A3 (en) 1986-09-17
DE3326592A1 (de) 1985-01-31

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