EP1788259B2 - Coude pour une conduite de fluide - Google Patents

Coude pour une conduite de fluide Download PDF

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Publication number
EP1788259B2
EP1788259B2 EP05024982.0A EP05024982A EP1788259B2 EP 1788259 B2 EP1788259 B2 EP 1788259B2 EP 05024982 A EP05024982 A EP 05024982A EP 1788259 B2 EP1788259 B2 EP 1788259B2
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EP
European Patent Office
Prior art keywords
wall
pipe bend
guiding element
sections
edges
Prior art date
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Active
Application number
EP05024982.0A
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German (de)
English (en)
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EP1788259B1 (fr
EP1788259A1 (fr
Inventor
Hans-Joachim Naber
Wolf-Christoph Prof. Dr.-Ing. Friebel
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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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Priority to DE502005009215T priority Critical patent/DE502005009215D1/de
Priority to AT08004098T priority patent/ATE460588T1/de
Priority to ES05024982.0T priority patent/ES2543590T5/es
Priority to EP05024982.0A priority patent/EP1788259B2/fr
Priority to ES08004098T priority patent/ES2343388T3/es
Application filed by Naber Holding GmbH and Co KG filed Critical Naber Holding GmbH and Co KG
Priority to EP08004098A priority patent/EP1923576B1/fr
Publication of EP1788259A1 publication Critical patent/EP1788259A1/fr
Publication of EP1788259B1 publication Critical patent/EP1788259B1/fr
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Publication of EP1788259B2 publication Critical patent/EP1788259B2/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 a pipe bend is from the DE 1 261 715 B known. Similar pipe bends also show the DE 103 60 839 B and the DE 27 20 451 A1 ,
  • 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 and in particular exhaust air ducts for hoods in modern diving.
  • 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. as well as to enable the simple production of such devices.
  • An essential idea of the invention is to install guide elements in a very specific manner in the pipe bends, 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 are thus divided into sections 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 two-part vanes according to the invention also referred to as a guide body, reduce vortex formation and ensure a more uniform speed.
  • the patent BE 510 469 describes, for example, a one-piece pipe bend for fluid channels with rigid fluid guide elements, wherein the guide elements are guided parallel to each other and to the curved inner walls and outer walls. Furthermore, the guide elements are in a transition piece of flat channel to circular channel, starting from a flat channel to a circular channel, merging into a straight piece in the direction of flat channel.
  • a fluid guide elements-containing pipe bend has the particular disadvantage that it is very expensive to manufacture, which is due to the positioning of the guide elements exactly parallel to the predetermined by the pipe bend outer walls in the given one-piece design.
  • the invention can be applied to any type of pipe elbows, for example, three different pipe bends are given, and for example, one or two vanes are listed within these pipe bends.
  • 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 is the horizontal 90 ° flat channel Rolubogen generally designated 10. At both ends slightly widened connecting flanges 22, 23 are mounted, which allow the flush insertion of the connecting pipes. The actual 90 ° bow is designated 24. Inside this pipe bend, an inner baffle 27 and an outer baffle 26 are arranged, which divide the entire fluid flow, for example, the exhaust air of a kitchen in three sub-streams. The two Leitbteche 26, 27 are guided parallel to the outer wall 25 and the inner wall 29 and extend from a transverse surface 24 to the opposite, here the lower transverse surface 44th
  • FIG. 1 Also visible is the two-piece composition of horizontal ductwork 10.
  • the corresponding connection lines together with the connection profile of the inner and the outer wall of the pipe bend including the connecting flanges 22, 23 are designated by 28, the corresponding connection lines of the inner guide elements are designated by 31.
  • FIG. 2 shows the connection profile 28 of the inner curved wall 29 and the outer curved wall 25 as an enlargement of the in FIG. 1 part marked with X
  • FIG. 3 shows in enlarged scale the in FIG. 1 with FF designated sectional view in magnification.
  • a kind of tongue and groove connection is used to connect the two sections of the guide elements.
  • the lower outwardly chamfered cut edge is extended outward like a hook and engages with a correspondingly adapted in reverse manner counter strip 33.
  • the resulting grid connection can also be stably connected and sealed by welding or gluing.
  • FIG. 4 shows the in FIG. 1 illustrated horizontal 90 ° flat-channel pipe bend as an exploded view with the two sections shown above.
  • the same parts are provided with the same reference numerals.
  • the upper portion is generally designated 20, the lower portion generally 40. Accordingly, the lower sections are also designated separately, the connection Operatlansche the lower portion with 42. 43.
  • the lower flat bottom portion is denoted by 44, the cutting edges of the lower portion of the guide elements with 46, 47 denotes. On these cut edges are shown in a section thinner connecting springs 49 in a section Z, which are beveled flat in the direction of one end of the pipe bend; these come into engagement with corresponding grooves in the upper part of the pipe bend, whereby a simple and - by welding or gluing - stable and fluid-tight connection is made possible.
  • FIG. 4 in the lower part of the outer connecting bar 48 of the lower portion shown, in which engages the straight edge of the upper portion of the pipe bend 10 in principle.
  • Out FIG. 4 is also an outer bevel 51 of the connecting flanges 42, 43, 22 to the end edges, to facilitate the connection, to improve the seal, for better mechanical adaptation and thus also to recognize the noise reduction.
  • FIG. 4 a shows the detail "Z" of FIG. 4 enlarged, with bevels of an edge of the spring profiles are visible, which correspond to a corresponding Nutverlauf.
  • FIG. 5 shows the two halves of the pipe bend of FIG. 1 and FIG. 4 with a small distance from each other, whereby the mutual tongue and groove engaging members 49,50 are shown.
  • FIG. 5a shows in an enlarged scale the slanted to one side narrow connecting springs 49 of the lower portion 40 of the pipe bend 10 which arrive with corresponding springs 50 of the upper portion 20 in tight engagement.
  • FIG. 6 shows the lower portion 40 of the pipe bend 10, but exactly from above, to show the exact course of the guide elements parallel to the curved inner wall 29 and the curved outer wall 25.
  • FIG. 7 shows another form of a pipe bend, namely a vertical 90 ° flachkanal-pipe bend, which is however set up for the sake of clarity and thus represents practically a horizontal pipe bend.
  • This pipe bend is generally designated 60. It has a single guide element 62, which is arranged parallel to the curved inner wall 63 and the curved outer wall 65 and substantially centrally. The two slightly enlarged connecting flanges are designated 77, 79.
  • FIG. 8 shows the lower part of the in FIG. 7 completely illustrated pipe bend.
  • the forward arrow-shaped beveled connecting springs are denoted by 69, furthermore, the outer adjustment and connection bar 68 is also visible for receiving the straight cut edge of the upper section in principle.
  • FIG. 9 shows a further embodiment, not according to 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 ducts.
  • 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. 10 shows the complete connector 80.
  • the flat channel 82 is vertical and the circular channel 84 are arranged horizontally. Well visible are the outer baffle 86 and the inner baffle 84.
  • 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. 11 shows the cross section through the diverter pipe elbow of FIG. 10 , Here, in particular, the precise curvatures of outer wall 92, outer guide plate 86, inner guide plate 88, which protrudes slightly into the flange region of the round terminal 84.
  • the curved outer surface 92 describes, starting from the circular channel connection, substantially initially a circular arc with a large radius and then goes over in 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 (8)

  1. Coude de tuyau (10 ; 60) pour des conduites de fluide, comportant une paroi intérieure (29 ; 63) courbe et une paroi extérieure (25 ; 65) courbe et comportant au moins un élément de guidage de fluide (26, 27 ; 62) rigide, ledit au moins un élément de guidage étant disposé parallèlement à la paroi intérieure (29 ; 63) courbe et à la paroi extérieure (25 ; 65) courbe, caractérisé en ce que le coude de tuyau (10 ; 60) est constitué de deux parties (20, 40 ; 70), la paroi extérieure (25 ; 65) étant divisée en deux avec des arêtes de coupe opposées et la paroi intérieure (29 ; 63) étant divisée en deux avec des arêtes de coupe opposées et ledit au moins un élément de guidage (26, 29 ; 62) étant divisé en deux avec des arêtes de coupe (46, 47) opposées, les arêtes de coupe (46, 47) dudit au moins un élément de guidage (26, 27 ; 62) peuvent être encliquetées au moins par zones, par l'intermédiaire d'une languette profilée (49, 50 ; 69), dans une rainure dans l'arête de coupe opposée de l'autre partie de l'élément de guidage concerné, et les arêtes de coupe opposées étant reliées entre elles par l'intermédiaire d'un moyen adhésif et étanche ou par soudage, sur l'une des arêtes de coupe orientées l'une vers l'autre de la paroi intérieure (29 ; 63) et de la paroi extérieure (25 ; 65) est disposé au moins par zones un bord d'encliquetage (28 ; 68) chevauchant pour l'arête de coupe sensiblement droite de l'autre partie du coude de tuyau (10 ; 60), y compris la bride de liaison (43, 42 ; 77, 79) du coude, les deux arêtes étant collées ou soudées l'une à l'autre de manière étanche.
  2. Coude de tuyau selon la revendication 1, caractérisé en ce qu'il est prévu un coude (60) vertical pour tube plat, de préférence de 90°, un seul élément de guidage (62) étant prévu symétriquement dans sa ligne médiane.
  3. Coude de tuyau selon la revendication 1 ou 2, caractérisé en ce qu'il est prévu un coude horizontal pour tube plat, de préférence de 90°, dans lequel sont prévus deux éléments de guidage (26, 27) parallèles entre eux et parallèles à la paroi intérieure (29) courbe et à la paroi extérieure (25) courbe, l'élément de guidage (26) extérieur étant prévu à peu près au milieu du conduit, et l'élément de guidage (27) intérieur étant disposé entre la paroi intérieure (29) courbe et l'élément de guidage (26) extérieur, de telle sorte que la largeur extérieure du conduit correspond sensiblement au double de la largeur des deux conduits intérieurs.
  4. Coude de tuyau selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les rainures et les languettes profilées (49, 50 ; 69) correspondantes sont chanfreinées vers un côté pour faciliter la fabrication et le montage.
  5. Coude de tuyau selon l'une quelconque des revendications 1 à 4, caractérisé en ce que sur les deux arêtes de coupe (46, 47) opposées des parties dudit au moins un élément de guidage (26, 27 ; 62) sont prévues des rainures d'encliquetage qui sont reliées entre elles par une languette profilée (49, 50 ; 69).
  6. Coude de tuyau selon la revendication 5, caractérisé en ce que pour simplifier l'assemblage, les languettes profilées (49, 50 ; 69) et les rainures sont décalées les unes par rapport aux autres le long des arêtes de coupe (46, 47) des deux parties opposes dudit au moins un élément de guidage (20, 40 ; 60).
  7. Coude de tuyau selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les portions des arêtes d'encliquetage (28 ; 68) chevauchantes alternent le long des arêtes de coupe des deux parties (20, 40 ; 60) de la paroi intérieure (29 ; 63) et de la paroi extérieure (25 ; 65), de préférence dans chaque cas sur la moitié de la longueur des arêtes.
  8. Coude de tuyau selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les brides de liaison (22) comportent vers l'arête finale des arêtes intérieures (51) qui sont chanfreinées pour améliorer l'assemblage, l'étanchéité, la résistance à l'écoulement et le développement de bruits.
EP05024982.0A 2005-11-16 2005-11-16 Coude pour une conduite de fluide Active EP1788259B2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT08004098T ATE460588T1 (de) 2005-11-16 2005-11-16 Rohrbogen für fluidkanäle
ES05024982.0T ES2543590T5 (es) 2005-11-16 2005-11-16 Codo para canalizaciones de fluido
EP05024982.0A EP1788259B2 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide
ES08004098T ES2343388T3 (es) 2005-11-16 2005-11-16 Codo para conductos de fluido.
DE502005009215T DE502005009215D1 (de) 2005-11-16 2005-11-16 Rohrbogen für Fluidkanäle
EP08004098A EP1923576B1 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide

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 Child Applications (2)

Application Number Title Priority Date Filing Date
EP08004098A Division-Into EP1923576B1 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide
EP08004098A Division EP1923576B1 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide

Publications (3)

Publication Number Publication Date
EP1788259A1 EP1788259A1 (fr) 2007-05-23
EP1788259B1 EP1788259B1 (fr) 2015-07-22
EP1788259B2 true EP1788259B2 (fr) 2018-09-19

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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

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EP08004098A Active EP1923576B1 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide

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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
EP4067753A2 (fr) 2021-03-31 2022-10-05 Naber Holding GmbH & Co. KG Agencement de conduit plat pour une hotte aspirante à circulation descendante

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* 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
DE102021113234B4 (de) 2021-05-21 2022-12-15 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
DE102021113249B4 (de) 2021-05-21 2023-04-27 Naber Holding Gmbh & Co. Kg Rohrbogen für einen Abluftkanal einer Dunstabzugshaube
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

Citations (6)

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Publication number Priority date Publication date Assignee Title
DE913600C (de) † 1952-08-17 1954-06-18 Armco Int Corp Verbindungsanordnung fuer zusammensetzbare Abflussrohre
DE2720451A1 (de) † 1976-05-07 1977-11-24 Saunier Duval Verbindungsrohrbogen fuer zwei konzentrische rohre
DE3807688C2 (de) † 1988-03-09 1995-04-13 Horst Severyns Verfahren und Vorrichtung zur Herstellung eines Kunststoffrohr-Formstücks
EP0765974A1 (fr) † 1995-09-28 1997-04-02 Emhart Inc. Dispositif de montage d'un moyeu
DE10227689A1 (de) † 2002-06-21 2004-01-08 Ina-Schaeffler Kg Linearwälzlager mit geteiltem Rücklaufrohr
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

Family Cites Families (9)

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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
DE1261715B (de) * 1965-02-05 1968-02-22 Steinzeug Und Kunststoffwarenf Kruemmer mit rechteckigem Querschnitt sowie Verfahren und Vorrichtung zur Herstellung desselben
DE3726492C1 (de) * 1987-08-08 1988-11-10 Flachglas Ag Stroemungskanal fuer die Rauchgase einer Rauchgasreinigungsanlage
ES2112592T3 (es) 1995-09-28 1998-04-01 Benteler Werke Ag Codo para gases de escape.
DE10360839B3 (de) * 2003-12-23 2005-06-09 Naber Holding Gmbh & Co. Kg Rohrkrümmer zum Verbinden von Fluidleitungen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE913600C (de) † 1952-08-17 1954-06-18 Armco Int Corp Verbindungsanordnung fuer zusammensetzbare Abflussrohre
DE2720451A1 (de) † 1976-05-07 1977-11-24 Saunier Duval Verbindungsrohrbogen fuer zwei konzentrische rohre
DE3807688C2 (de) † 1988-03-09 1995-04-13 Horst Severyns Verfahren und Vorrichtung zur Herstellung eines Kunststoffrohr-Formstücks
EP0765974A1 (fr) † 1995-09-28 1997-04-02 Emhart Inc. Dispositif de montage d'un moyeu
DE10227689A1 (de) † 2002-06-21 2004-01-08 Ina-Schaeffler Kg Linearwälzlager mit geteiltem Rücklaufrohr
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4067753A2 (fr) 2021-03-31 2022-10-05 Naber Holding GmbH & Co. KG Agencement de conduit plat pour une hotte aspirante à circulation descendante

Also Published As

Publication number Publication date
ATE460588T1 (de) 2010-03-15
ES2543590T3 (es) 2015-08-20
EP1923576B1 (fr) 2010-03-10
EP1788259B1 (fr) 2015-07-22
EP1788259A1 (fr) 2007-05-23
EP1923576A1 (fr) 2008-05-21
ES2543590T5 (es) 2018-11-02
ES2343388T3 (es) 2010-07-29
DE502005009215D1 (de) 2010-04-22

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