EP1923576B1 - Coude pour une conduite de fluide - Google Patents

Coude pour une conduite de fluide Download PDF

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Publication number
EP1923576B1
EP1923576B1 EP08004098A EP08004098A EP1923576B1 EP 1923576 B1 EP1923576 B1 EP 1923576B1 EP 08004098 A EP08004098 A EP 08004098A EP 08004098 A EP08004098 A EP 08004098A EP 1923576 B1 EP1923576 B1 EP 1923576B1
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EP
European Patent Office
Prior art keywords
duct
pipe bend
circular
piece
flat
Prior art date
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Active
Application number
EP08004098A
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German (de)
English (en)
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EP1923576A1 (fr
Inventor
Hans-Joachim Naber
Wolf-Christoph Friebel
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.)
Naber Holding GmbH and Co KG
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Naber Holding GmbH and Co KG
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Publication date
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Application filed by Naber Holding GmbH and Co KG filed Critical Naber Holding GmbH and Co KG
Priority to DE502005009215T priority Critical patent/DE502005009215D1/de
Publication of EP1923576A1 publication Critical patent/EP1923576A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or conduits
    • F15D1/04—Arrangements of guide vanes in pipe elbows or duct bends; Construction of pipe conduit elements or elbows with respect to flow, specially for reducing losses in flow

Definitions

  • the invention relates to a pipe bend for fluid channels according to the preamble of claim 1.
  • Such bends are an essential element of fluid channels, which are increasingly used in buildings of all kinds for ventilation, for ventilation, for air conditioning.
  • fluids liquids and gases, including natural gas pipelines or oil pipelines.
  • a preferred application are supply air ducts and in particular exhaust ducts for extractor hoods in modern kitchens.
  • Fluid channels have a certain line resistance, which leads to pressure losses, they require certain cross-sections and drive motors for transport, such as fans; These can be associated with high noise.
  • the aim of the invention is to reduce the pressure loss through the line resistance, and thus the power cross section, or to increase the flow rate, while reducing the noise level and also the motor power required for fluid transport.
  • An essential idea of the invention is to install guide elements in the pipe bends in a very specific manner, so that the fluid flow within the pipe bend is completely subdivided into a plurality of sections, preferably two or three sections.
  • Previous guide elements in pipe bends so in Dubbel, paperback for mechanical engineering, Springer-Verlag Berlin, 1970, DE patent 588113 , or DE-PS 742475 could not contribute anything to this problem solution.
  • the BE 510469 A discloses a pipe bend for fluid channels having a circular cross-section, which has in the interior parallel to the outer and inner wall running extending circular guide surfaces, which are adapted to minimize pipe bends with a continuous circular cross section, the pressure drop in fürflußrichtun.
  • the guide elements according to the invention also referred to as a guide body, reduce the vortex formation and ensure more uniform speed.
  • the sections of the flow guide elements are different.
  • Such pipe bends can also be designed as deflecting pieces between different pipe sections, for example flat-round. All angles of pipe bends are possible, the sharper the angle, the more significant the invention affects; most common are 90 ° angles.
  • FIG. 1 shows a further embodiment of the invention in the form of a deflection piece 80 between a flat channel and a circular channel to allow a connection between flat channels and round channels.
  • the narrower edge 90 of the inner guide element 88 in this case engages slightly in the flange portion 92 of the circular connection piece, which is designed for the sliding over a round duct fitting.
  • These guide elements are thus somewhat more expensive to manufacture, but allow a waiver of a two-part production of the pipe bends.
  • this different type of technology can be used in all possible pipe bends and not only in the deflector shown.
  • FIG. 2 shows the complete connector 80, wherein the flat channel 82 vertically and the circular channel 84 are arranged horizontally. Well visible are the outer baffle 86 and the inner baffle 84. In this embodiment, the exit width of the central channel is about 20 percent wider than the other two channels. The same applies to the area of the flat channel.
  • FIG. 3 shows the cross section through the diverter pipe elbow of FIG. 2 ,
  • the curved outer surface 92 describes, starting from the circular channel connection, substantially initially a circular arc with a large radius and then merges into a flat surface in the direction of the flat channel connection.
  • the outer guide element 86 and the inner guide element 88 have essentially the shape of an ellipse.
  • the channel widths of the flat-channel connection and the round-channel connection are in the same relationship to each other.

Claims (5)

  1. Coude tubulaire pour des conduits de fluide avec des éléments de guidage du fluide (86, 88) rigides, en particulier pour les conduits d'admission et les conduits d'évacuation, en particulier pour des cuisines, avec une partie de transition (80) entre le conduit plat (82) et le conduit circulaire (84),
    caractérisé en ce que les éléments de guidage (86, 88) ont sensiblement une forme elliptique et ne sont pas orientés parallèlement à la paroi intérieure ou à la paroi extérieure et se prolongent vers le conduit plat par une partie droite (87, 89), et en ce que la largeur du raccord de conduit circulaire (84) et la largeur du raccord de conduit plat (82) sont proportionnelles l'une par rapport à l'autre.
  2. Coude tubulaire selon la revendication 1, caractérisé en ce que ledit coude est une partie de déviation (80) depuis un conduit plat (82) vertical vers un conduit circulaire (84), dans laquelle les éléments de guidage (86, 88), de préférence au nombre de deux, sont disposés à distance égale ou s'étendent avec un conduit intérieur plus large d'environ 10 à 30%.
  3. Coude tubulaire selon la revendication 2, caractérisé en ce que les deux éléments de guidage (86, 88) elliptiques s'étendent depuis le raccord de conduit circulaire vers le raccord de conduit plat, et en ce que la face extérieure (92) coudée est, en alternative, également elliptique ou est adjacente au raccord de conduit circulaire (84) d'abord sous forme d'arc de cercle avec un grand rayon et se prolonge ensuite vers le conduit plat par une partie droite plane, les proportions des largeurs de conduit dans le raccord de conduit circulaire et dans le raccord de conduit plat étant sensiblement identiques et le conduit central étant de préférence plus large que les deux conduits extérieurs d'environ 10 à 30%.
  4. Coude tubulaire selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit coude est réalisé d'un seul tenant et en ce que les éléments de guidage (86, 88) sont insérés dans le coude et sont assemblés de manière étanche à celui-ci par soudage ou collage.
  5. Coude tubulaire selon la revendication 4, caractérisé en ce que les parois latérales (87, 89) des éléments de guidage (86, 88) peuvent être introduites et fixées dans des évidements (83) correspondants, ménagés sur la paroi intérieure du coude, ou dans des échancrures orientées vers l'extérieur, de manière à conférer une face intérieure plane au coude tubulaire.
EP08004098A 2005-11-16 2005-11-16 Coude pour une conduite de fluide Active EP1923576B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE502005009215T DE502005009215D1 (de) 2005-11-16 2005-11-16 Rohrbogen für Fluidkanäle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05024982.0A EP1788259B2 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP05024982.0A Division-Into EP1788259B2 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide
EP05024982.0A Division EP1788259B2 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide
EP05024982.0 Division 2005-11-16

Publications (2)

Publication Number Publication Date
EP1923576A1 EP1923576A1 (fr) 2008-05-21
EP1923576B1 true EP1923576B1 (fr) 2010-03-10

Family

ID=36177659

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05024982.0A Active EP1788259B2 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide
EP08004098A Active EP1923576B1 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP05024982.0A Active EP1788259B2 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide

Country Status (4)

Country Link
EP (2) EP1788259B2 (fr)
AT (1) ATE460588T1 (fr)
DE (1) DE502005009215D1 (fr)
ES (2) ES2543590T5 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021113234A1 (de) 2021-05-21 2022-11-24 Naber Holding Gmbh & Co. Kg Rohrbogen für einen Abluftkanal einer Dunstabzugshaube

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102155478A (zh) * 2011-04-28 2011-08-17 唐力南 弯管流速调整器
DE202017105556U1 (de) * 2017-09-14 2017-09-26 Naber Holding Gmbh & Co. Kg Flachkanalverbinder für einen Flachkanal und eine entsprechende Kanalanordnung
CN112983846A (zh) 2019-12-02 2021-06-18 开利公司 离心压缩机和运行离心压缩机的方法
CZ308916B6 (cs) * 2020-06-29 2021-08-25 Oil&Gas Metering Equipment S.R.O. Usměrňovač průtoku plynu v ohybu proudění u ultrazvukového plynoměru
DE202021101741U1 (de) 2021-03-31 2021-04-15 Naber Holding Gmbh & Co. Kg Flachkanalanordnung für eine Downdraft-Dunstabzugshaube
DE102021113249B4 (de) 2021-05-21 2023-04-27 Naber Holding Gmbh & Co. Kg Rohrbogen für einen Abluftkanal einer Dunstabzugshaube
DE102021113244A1 (de) 2021-05-21 2022-11-24 Naber Holding Gmbh & Co. Kg Downdraft-Element und Anordnung
CN115419616A (zh) * 2022-09-05 2022-12-02 江森自控空调冷冻设备(无锡)有限公司 离心压缩机的吸气管

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE387935C (de) * 1922-08-29 1924-01-09 Maschf Rohrleitung bei Luftfoerderern fuer Schuettgut
DE588113C (de) 1929-01-09 1933-11-14 Hermann Foettinger Dr Ing Leitflaechenanordnung fuer offene und geschlossene Kanaele
GB509287A (en) * 1938-05-23 1939-07-13 Neu Sa Improvements relating to apparatus for distributing humidified air
DE742475C (de) 1939-10-29 1944-06-02 Focke Wulf Flugzeugbau G M B H Rohrkruemmer
DE855779C (de) * 1951-04-08 1952-11-17 Walter Dr-Ing Barth Rohrkruemmer
DE913600C (de) 1952-08-17 1954-06-18 Armco Int Corp Verbindungsanordnung fuer zusammensetzbare Abflussrohre
DE1261715B (de) * 1965-02-05 1968-02-22 Steinzeug Und Kunststoffwarenf Kruemmer mit rechteckigem Querschnitt sowie Verfahren und Vorrichtung zur Herstellung desselben
FR2350539A1 (fr) 1976-05-07 1977-12-02 Saunier Duval Coude de raccordement pour deux tubes concentriques
DE3726492C1 (de) * 1987-08-08 1988-11-10 Flachglas Ag Stroemungskanal fuer die Rauchgase einer Rauchgasreinigungsanlage
DE3807688C2 (de) 1988-03-09 1995-04-13 Horst Severyns Verfahren und Vorrichtung zur Herstellung eines Kunststoffrohr-Formstücks
MX9601490A (es) † 1995-09-28 1997-03-29 Emhart Inc Ensamble de conexion de maza.
DE59501301D1 (de) 1995-09-28 1998-02-19 Benteler Werke Ag Abgaskrümmer
DE10227689A1 (de) 2002-06-21 2004-01-08 Ina-Schaeffler Kg Linearwälzlager mit geteiltem Rücklaufrohr
DE10360839B3 (de) * 2003-12-23 2005-06-09 Naber Holding Gmbh & Co. Kg Rohrkrümmer zum Verbinden von Fluidleitungen
EP1570926A1 (fr) 2004-03-03 2005-09-07 Manfred Strub Méthode de production d'un coude pour un tuyau de descente, un coude et un tuyau de descente

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021113234A1 (de) 2021-05-21 2022-11-24 Naber Holding Gmbh & Co. Kg Rohrbogen für einen Abluftkanal einer Dunstabzugshaube
DE102021113234B4 (de) 2021-05-21 2022-12-15 Naber Holding Gmbh & Co. Kg Rohrbogen für einen Abluftkanal einer Dunstabzugshaube

Also Published As

Publication number Publication date
ES2343388T3 (es) 2010-07-29
EP1788259A1 (fr) 2007-05-23
ATE460588T1 (de) 2010-03-15
ES2543590T5 (es) 2018-11-02
EP1788259B1 (fr) 2015-07-22
EP1923576A1 (fr) 2008-05-21
EP1788259B2 (fr) 2018-09-19
ES2543590T3 (es) 2015-08-20
DE502005009215D1 (de) 2010-04-22

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