EP1923576A1 - Coude pour une conduite de fluide - Google Patents

Coude pour une conduite de fluide Download PDF

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Publication number
EP1923576A1
EP1923576A1 EP08004098A EP08004098A EP1923576A1 EP 1923576 A1 EP1923576 A1 EP 1923576A1 EP 08004098 A EP08004098 A EP 08004098A EP 08004098 A EP08004098 A EP 08004098A EP 1923576 A1 EP1923576 A1 EP 1923576A1
Authority
EP
European Patent Office
Prior art keywords
channel
pipe bend
flat
circular
guide elements
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.)
Granted
Application number
EP08004098A
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German (de)
English (en)
Other versions
EP1923576B1 (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
Original Assignee
Naber Holding GmbH and Co KG
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
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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
Application granted granted Critical
Publication of EP1923576B1 publication Critical patent/EP1923576B1/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 for elbows with respect to flow, e.g. for reducing losses of 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 mount 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 guide elements according to the invention also referred to as a guide body, reduce the vortex formation and ensure more uniform speed.
  • 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 the horizontal 90 ° flat channel pipe bend is 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 baffles 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, the two-piece composition of the horizontal flat-channel pipe bend 10 is visible.
  • 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 to the outside like a hook and engages with a correspondingly in reverse manner adapted counter bar 33.
  • the resulting raster connection can be stably connected and sealed by welding or gluing.
  • FIG. 4 shows the horizontal 90 ° flat-channel pipe bend shown in Figure 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.
  • the lower sections are also designated separately, the connecting partial flanges of the lower section having 42, 43.
  • the lower flat bottom section is denoted by 44, the cutting edges of the lower section of the guide elements 46, 47 denoted.
  • 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 chamfer 51 of the connecting flanges 42, 43, 22 to the end edges out, to facilitate the connection, to improve the seal, for better mechanical adjustment and thus also for 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 engage with corresponding springs 50 of the upper portion 20 in a fixed 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 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. 10 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. 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Pipe Accessories (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Duct Arrangements (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
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
EP05024982.0 Division 2005-11-16
EP05024982.0A Division EP1788259B2 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide
EP05024982.0A Division-Into EP1788259B2 (fr) 2005-11-16 2005-11-16 Coude pour une conduite de fluide

Publications (2)

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

Families Citing this family (9)

* 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
CZ2020381A3 (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
DE102021113244A1 (de) 2021-05-21 2022-11-24 Naber Holding Gmbh & Co. Kg Downdraft-Element und Anordnung
DE102021113234B4 (de) 2021-05-21 2022-12-15 Naber Holding Gmbh & Co. Kg Rohrbogen für einen Abluftkanal einer Dunstabzugshaube
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 (7)

* 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
BE510469A (fr) * 1951-04-08 1952-04-30 Walter Dr-Ing Barth
US4919170A (en) * 1987-08-08 1990-04-24 Veba Kraftwerke Ruhr Aktiengesellschaft Flow duct for the flue gas of a flue gas-cleaning plant
DE10360839B3 (de) * 2003-12-23 2005-06-09 Naber Holding Gmbh & Co. Kg Rohrkrümmer zum Verbinden von Fluidleitungen

Family Cites Families (8)

* 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
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
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.
EP0765994B1 (fr) 1995-09-28 1998-01-14 Benteler Ag Collecteur d'échappement
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

Patent Citations (7)

* 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
BE510469A (fr) * 1951-04-08 1952-04-30 Walter Dr-Ing Barth
US4919170A (en) * 1987-08-08 1990-04-24 Veba Kraftwerke Ruhr Aktiengesellschaft Flow duct for the flue gas of a flue gas-cleaning plant
DE10360839B3 (de) * 2003-12-23 2005-06-09 Naber Holding Gmbh & Co. Kg Rohrkrümmer zum Verbinden von Fluidleitungen

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
30 September 2005, FABER, XP002378977 *
DUBBEL: "Taschenbuch für den Maschinenbau", 1970, SPRINGER-VERLAG

Also Published As

Publication number Publication date
ES2543590T5 (es) 2018-11-02
ATE460588T1 (de) 2010-03-15
ES2543590T3 (es) 2015-08-20
DE502005009215D1 (de) 2010-04-22
EP1788259A1 (fr) 2007-05-23
EP1788259B2 (fr) 2018-09-19
EP1923576B1 (fr) 2010-03-10
ES2343388T3 (es) 2010-07-29
EP1788259B1 (fr) 2015-07-22

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