EP1788259B2 - Bend for a fluid duct - Google Patents

Bend for a fluid duct 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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EP05024982.0A
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German (de)
French (fr)
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EP1788259A1 (en
EP1788259B1 (en
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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Priority to DE502005009215T priority Critical patent/DE502005009215D1/en
Priority to ES08004098T priority patent/ES2343388T3/en
Priority to EP05024982.0A priority patent/EP1788259B2/en
Priority to AT08004098T priority patent/ATE460588T1/en
Priority to ES05024982.0T priority patent/ES2543590T5/en
Application filed by Naber Holding GmbH and Co KG filed Critical Naber Holding GmbH and Co KG
Priority to EP08004098A priority patent/EP1923576B1/en
Publication of EP1788259A1 publication Critical patent/EP1788259A1/en
Publication of EP1788259B1 publication Critical patent/EP1788259B1/en
Publication of EP1788259B2 publication Critical patent/EP1788259B2/en
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    • 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.

Abstract

The elbow (10) has guiding elements (26,27), which are led parallel to each other and to the curved inner walls (29) and external walls (25). The guiding elements with a manifold of a flat channel to a circular channel, exchanges from a flat channel to a circular channel in a straight piece direction flat channel. If required, the external guiding elements have another inner guiding element in elliptical form. The width of circular channel connection is proportionate to flat duct connection.

Description

Die Erfindung bezieht sich auf einen Rohrbogen für Fluidkanäle gemäß dem Oberbegriff des Anspruches 1.The invention relates to a pipe bend for fluid channels according to the preamble of claim 1.

Ein derartiger Rohrbogen ist aus der DE 1 261 715 B bekannt. Ähnliche Rohrbögen zeigen auch die DE 103 60 839 B und die DE 27 20 451 A1 .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 ,

Derartige Rohrbögen sind ein wesentliches Element von Fluidkanälen, die vermehrt in Gebäuden aller Art für die Belüftung, für die Entlüftung, für Klimaanlagen eingesetzt werden. Prinzipiell ist die Anwendung bei allen Fluiden, Flüssigkeit und Gasen möglich, auch für Erdgasleitung oder für Ölleitungen.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. In principle, it is possible to use it on all fluids, liquids and gases, including natural gas pipelines or oil pipelines.

Eine bevorzugte Anwendung sind Zuluft- und insbesondere Abluftkanäle für Abzugshauben in modernen tauchen.A preferred application are supply air and in particular exhaust air ducts for hoods in modern diving.

Fluidkanäle haben einen bestimmten Leitungswiderstand, der zu Druckverlusten führt, sie benötigen bestimmte Querschnitte und Antriebsmotoren für den Transport, wie für Ventilatoren; diese können mit hohen Geräuschen verbunden sein.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.

Ziel der Erfindung ist, den Druckverlust durch den Leitungswiderstand, und damit den Leistungsquerschnitt zu verringern, oder die Durchflussmenge zu erhöhen, gleichzeitig den Geräuschpegel und auch die für den Fluidtransport erforderliche Motorleistung zu verringern. sowie die einfache Herstellung solcher Vorrichtungen zu ermöglichen.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.

Dieses Ziel wird durch die Merkmale des Anspruches 1 gelöst. Weitere Ausgestaltungen der Erfindung sind in den Unteransprüchen unter Schutz gestellt.This object is solved by the features of claim 1. Further embodiments of the invention are provided in the subclaims under protection.

Eine wesentliche Erfindungsidee besteht darin, in den Rohrbögen Leitelemente in ganz bestimmter Weise anzubringen, so dass der Fluidstrom innerhalb des Rohrbogens komplett in mehrere Abschnitte, vorzugsweise zwei oder drei Abschnitte, unterteilt wird, Bisherige Leitelemente in Rohrbögen so in Dubbel, Taschenbuch für den Maschinenbau. Springer-Verlag Berlin. 1970 . DE-Patentschrift 588113 , oder DE-PS 742475 konnten nichts Entscheidendes zu dieser Problemlösung beitragen.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.

Die erfindungsgemäßen zweigeteilten Leitelemente, auch als Leitkörper bezeichnet, verringern die Wirbelbildung und sorgen für gleichmäßigere Geschwindigkeit.The two-part vanes according to the invention, also referred to as a guide body, reduce vortex formation and ensure a more uniform speed.

Die Verbesserungen sind knapp zusammengefasst:

  • höhere Strömungsleistung
  • -geringerer Energieverbrauch
  • weniger Lärm, z. B. an einer Ablufthaube
  • -größere mechanische Festigkeit
  • -leichtere Montage durch Einführfasen
  • kompaktere Abmessungen, insbesondere geringere Höhe.
  • einfachere Herstellung
The improvements are summarized:
  • higher flow capacity
  • -Lower energy consumption
  • less noise, eg. B. on an exhaust hood
  • -large mechanical strength
  • - easier installation through chamfers
  • more compact dimensions, especially lower height.
  • easier production

Ein Grund, warum sich derartige innere Leitelemente bisher nicht durchsetzen, liegt auch an den relativ schwierigen Herstellungsproblemen.One reason why such inner guiding elements have not been successful so far is also due to the relatively difficult manufacturing problems.

Die Patentschrift BE 510 469 beschreibt zum Beispiel einen einteiligen Rohrbogen für Fluidkanäle mit starren Fluid-Leitelementen, wobei die Leitelemente parallel zueinander und zu den gekrümmten Innenwänden und Außenwänden geführt sind. Weiterhin sind die Leitelemente bei einem Übergangsstück von Flachkanal zu kreisrundem Kanal, ausgehend von einem Flachkanal zu einem kreisrunden Kanal, in ein gerades Stück Richtung Flachkanal übergehend. Eine solche Ausführungsform eines Fluid-Leitelemente beinhaltenden Rohrbogens hat insbesondere den Nachteil, daß er in der Herstellung sehr aufwendig ist, was bei der vorgegebenen einteiligen Bauform auf die Positionierung der Leitelemente exakt parallel zu den vom Rohrbogen vorgegebenen Außenwänden zurückzuführen ist.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. Such an embodiment of 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.

Nachfolgende Ansprüche zeigen unter anderem spezielle Ausführungsformen einer zweiteiligen Herstellung unterschiedlicher Rohrbögen und spezielle Merkmale des Zusammenfügens dieser zweiteiligen Rohrbögen, sowie vorteilhafte Ausgestaltungen und Anordnungen der Leitelemente und der Endkanten der Anschlussflansche. Dadurch ist zum einen ein sehr rasches einfaches und präzises Zusammenfügen möglich, zum anderen wird das Strömungsprofil im Inneren der Rohrbögen praktisch nicht beeinflusst, und weiterhin wird für einen festen Halt der beiden miteinander verbundenen Hälften der Rohrbögen gesorgt.The following claims show, inter alia, specific embodiments of a two-part production of different pipe bends and special features of the assembly of these two-part pipe bends, and advantageous embodiments and arrangements of the guide elements and the end edges of the connection flanges. As a result, on the one hand a very quick simple and precise assembly is possible, on the other hand, the flow profile is virtually unaffected in the interior of the pipe bends, and further provides a firm grip of the two interconnected halves of the pipe bends.

Die Erfindung lässt sich auf jede Art von Rohrbögen anwenden, beispielsweise sind drei verschiedene Rohrbögen angeführt, und beispielsweise sind ein oder zwei Leitelemente innerhalb dieser Rohrbögen angeführt. Je nach Rohrbogen sind die Abschnitte der Strömungs-Leitelemente unterschiedlich. Derartige Rohrbögen können auch als Umlenkstücke zwischen verschiedenen Rohrquerschnitten, beispielsweise Flach-Rund, ausgebildet sein. Alle Winkel von Rohrbögen sind möglich, je spitzer der Winkel, umso bedeutsamer wirkt sich die Erfindung aus; am häufigsten sind 90°-Winkel.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. Depending on the pipe bend, 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.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt.Embodiments of the invention are illustrated in the drawing.

Es zeigt:

  • Figur 1 einen horizontal angeordneten Flachkanal-Rohrbogen von 90°.
  • Figur 2 ein Detail der Zusammenfügung der zwei Hälften des Rohrbogens an der Außenwand und an der Innenwand in vergrößerter Darstellung des Bereiches X von Figur 1,
  • Figur 3 in vergrößerter Darstellung ein Detail des Zusammenfügens der beiden Rohrbogen-Hälften in einem vergrößerten Schnitt der Schnittfläche F-F von Figur 1,
  • Figur 4 eine Explosions-Darstellung des in Figur 1 gezeigten horizontalen Rohrbogens,
  • Figur 4 a das Detail "Z" von Figur 4 vergrößert,
  • Figur 5 die beiden Hälften des in Figur 1 dargestellten Rohrbogens mit kleinem Abstand zueinander.
  • Figur 5a die Einzelheit Z von Figur 4 in Form von als Eingriffsfeder ausgebildeten Teilbereichen des unteren Teilstückes des Rohrbogens von Figur 4. der mit entsprechenden Nuten des oberen Teilbereiches des horizontalen Rohrbogens von Figur 4 in Eingriff gelangt,
  • Figur 6 eine Draufsicht auf den unteren Abschnitt des horizontalen Rohrbogens von Figur 4,
  • Figur 7 den der Anschaulichkeit halber aufgestellten vertikalen Flachkanal-Rohrbogen mit einem zentralen Leitelement und einigen an die Innenkante des Leitelementes aufgesetzten Federelementen für den Eingriff in entsprechende Nuten der anderen Rohrbogenhälfte,
  • Figur 8 den unteren Abschnitt des in Figur 7 dargestellten Rohrbogens,
  • Figur 9 ein anderes Ausführungsbeispiel nicht gemäß der Erfindung in Form eines Umlenkstückes zwischen vertikalem Flachkanal und kreisrundem Kanal in perspektivischer Explosionsdarstellung.
  • Figur 10 das Umlenkstück von Figur 9 perspektivisch im zusammengebauten Zustand, wobei auch die unterschiedtichen Kanalbreiten sichtbar werden,
  • Figur 11 den Querschnitt durch das Umlenkstück von Figur 10 entlang der Schnittlinie A-A.
It shows:
  • FIG. 1 a horizontally arranged flat duct elbow of 90 °.
  • FIG. 2 a detail of the assembly of the two halves of the pipe bend on the outer wall and on the inner wall in an enlarged view of the area X of FIG. 1 .
  • FIG. 3 in an enlarged view a detail of the joining of the two pipe bend halves in an enlarged section of the cut surface FF of FIG. 1 .
  • FIG. 4 an exploded view of the in FIG. 1 shown horizontal pipe bend,
  • FIG. 4 a the detail "Z" of FIG. 4 increased
  • FIG. 5 the two halves of the in FIG. 1 illustrated pipe bend with a small distance from each other.
  • FIG. 5a the detail Z of FIG. 4 in the form of formed as an engagement spring portions of the lower portion of the pipe bend of FIG. 4 , the with corresponding grooves of the upper portion of the horizontal pipe bend of FIG. 4 engaged,
  • FIG. 6 a plan view of the lower portion of the horizontal pipe bend of FIG. 4 .
  • FIG. 7 the vertical flat-channel tube bend set up for the sake of clarity with a central guide element and a few spring elements placed on the inner edge of the guide element for engagement in corresponding grooves of the other tube curve half,
  • FIG. 8 the lower section of the in FIG. 7 illustrated pipe bend,
  • FIG. 9 another embodiment not according to the invention in the form of a deflection between vertical flat channel and circular channel in a perspective exploded view.
  • FIG. 10 the deflector of FIG. 9 Perspective in the assembled state, whereby the unterschiedtichen channel widths are visible,
  • FIG. 11 the cross section through the deflection of FIG. 10 along the section line AA.

In der Zeichnung sind gleiche Teile mit gleichen Bezugszeichen versehen, jedoch nur innerhalb des gleichen Ausführungsbeispieles.In the drawing, like parts are given the same reference numerals, but only within the same embodiment.

In Figur 1 ist der horizontale 90°-Flachkanal-Rolubogen allgemein mit 10 bezeichnet. An beiden Enden sind geringfügig erweiterte Anschlussflansche 22, 23 angebracht, welche das bündige Einschieben der Anschlussrohre ermöglichen. Der eigentliche 90°-Rohrbogen ist mit 24 bezeichnet. Im Inneren dieses Rohrbogens sind ein inneres Leitblech 27 und ein äußeres Leitblech 26 angeordnet, die den gesamten Fluidstrom, beispielsweise die Abluft einer Küche, in drei Teilströme aufteilen. Die beiden Leitbteche 26, 27 sind parallel zur Außenwand 25 sowie zur Innenwand 29 geführt und reichen von einer Querfläche 24 bis zur gegenüberliegenden, hier der unteren Querfläche 44.In 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

Aus Figur 1 ist auch die zweistückige Zusammensetzung des horizontalen hlachkanal-Rohrbogens 10 sichtbar. Die entsprechenden Anschlusslinien nebst Anschlussprofil der inneren und der äußeren Wand des Rohrbogens einschließlich der Anschlussflansche 22, 23 sind mit 28 bezeichnet, die entsprechenden Anschlusslinien der innen angeordneten Leitelemente sind mit 31 bezeichnet.Out 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.

Figur 2 zeigt das Anschlussprofil 28 der inneren gekrümmten Wand 29 und der äußeren gekrümmten Wand 25 als Vergrößerung des in Figur 1 mit X bezeichneten Teiles. Hieraus geht hervor, dass eine, hier unten angeordnete, Schnittkante beziehungsweise Anschlusskante im Wesentlichen gerade ausgebildet ist, allerdings zum Inneren des Rohrbogens hin abgeschrägt ist, während die entsprechende Schnittkante des, hier oben angeordneten, zweiten Teilstückes des Rohrbogens sich außerhalb des unteren Teilstückes um einen kleinen Bereich entlang dieser Kante und außerhalb derselben erstreckt. Auf diese Weise ist eine einfache definierte und leicht zu bewerkstelligende Zusammenfügung der beiden Teilstücke des Rohrbogens möglich. Durch Verschweißung oder Verklebung, ist eine teste und fluiddichte Verbindung der beiden Teilstücke gewährleistet. 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 From this it follows that one, arranged here below, cutting edge or connecting edge is substantially straight, but is tapered towards the inside of the pipe bend, while the corresponding cutting edge of, arranged here above, the second section of the pipe bend outside of the lower part to a small area along this edge and extends outside of it. In this way, a simple defined and easy to be accomplished joining of the two sections of the pipe bend is possible. By welding or gluing, a teste and fluid-tight connection of the two sections is guaranteed.

Figur 3 zeigt in vergrößerter Darstellung die in Figur 1 mit F-F bezeichnete SchnittDarstellung in Vergrößerung. Hier wird zur Verbindung der beiden Teilstücke der Leitelemente eine Art Nut- und Federverbindung angewandt. Hierbei ist die untere nach außen abgeschrägte Schnittkante nach außen hakenartig verlängert und gelangt in Eingriff mit einer entsprechend in umgekehrter Weise angepassten Gegenleiste 33. Die so entstehende Rasterverbindung kann auch durch Verschweißen oder Verkleben stabil verbunden und abgedichtet werden. FIG. 3 shows in enlarged scale the in FIG. 1 with FF designated sectional view in magnification. Here, a kind of tongue and groove connection is used to connect the two sections of the guide elements. Here, 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.

Figur 4 zeigt den in Figur 1 dargestellten horizontalen 90°-Flachkanal-Rohrbogen als Explosionsdarstellung mit den zwei übereinander dargestellten Teilstücken. Hierbei sind gleiche Teile mit gleichen Bezugszeichen versehen. FIG. 4 shows the in FIG. 1 illustrated horizontal 90 ° flat-channel pipe bend as an exploded view with the two sections shown above. Here, the same parts are provided with the same reference numerals.

Der Übersicht halber ist das obere Teilstück allgemein mit 20, das untere Teilstück allgemein mit 40 bezeichnet. Dementsprechend sind auch die unteren Teilstücke getrennt bezeichnet, die Anschluss-Teiltlansche des unteren Teilstückes mit 42. 43. Der untere flache Bodenabschnitt ist mit 44 bezeichnet, die Schnittkanten des unteren Teilstückes der Leitelemente mit 46, 47 bezeichnet. Auf diesen Schnittkanten sind in einem Abschnitt dünnere Verbindungs-Federn 49 in einem Abschnitt Z dargestellt, die in Richtung eines Endes des Rohrbogens flach abgeschrägt sind; diese gelangen mit entsprechenden Nuten im oberen Teilstück des Rohrbogens in festem Eingriff, wodurch ein einfaches und - mittels Verschweißen oder Verkleben - stabiles und fluiddichtes Verbinden ermöglicht wird.For clarity, the upper portion is generally designated 20, the lower portion generally 40. Accordingly, the lower sections are also designated separately, the connection Teiltlansche 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.

Weiterhin ist in Figur 4 im unteren Teil die äußere Verbindungsleiste 48 des unteren Teilstückes dargestellt, in welche die im Prinzip gerade Kante des oberen Teilstückes des Rohrbogens 10 eingreift. Aus Figur 4 ist auch eine äußere Abschrägung 51 der Anschlussflansche 42, 43, 22 zu den Endkanten hin, zum Erleichtern der Verbindung, zur Verbesserung der Abdichtung, zur besseren mechanischen Anpassung und damit ebenfalls zur Geräusch-Reduzierung zu erkennen.Furthermore, in 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.

Figur 4 a zeigt das Detail "Z" von Figur 4 vergrößert, wobei Abschrägungen einer Kante der Federprofile sichtbar sind, die einen entsprechenden Nutverlauf entsprechen. 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.

Figur 5 zeigt die beiden Hälften des Rohrbogens von Figur 1 und Figur 4 mit kleinem Abstand zueinander, wobei auch die gegenseitigen Nut- und Feder- Eingriffsglieder 49,50 dargestellt sind. 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.

Figur 5a zeigt in vergrößerter Darstellung die nach einer Seite abgeschrägten schmalen Verbindungsfedern 49 des unteren Teilstückes 40 des Rohrbogens 10. die mit entsprechenden Federn 50 des oberen Teilstückes 20 in festen Eingriff gelangen. 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.

Figur 6 zeigt das untere Teilstück 40 des Rohrbogens 10, jedoch genau von oben, um den genauen Verlauf der Leitelemente parallel zur gekrümmten Innenwand 29 und zur gekrümmten Außenwand 25 zu zeigen. 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.

Figur 7 zeigt eine andere Form eines Rohrbogens, nämlich einen vertikalen 90°-Flachkanal-Rohrbogen, der allerdings der Anschaulichkeit halber aufgestellt ist und somit praktisch ein Horizontalrohrbogen darstellt. Dieser Rohrbogen ist allgemein mit 60 bezeichnet. Er weist ein einziges Leitelement 62 auf, das parallel zur gekrümmten Innenwand 63 und zur gekrümmten Außenwand 65 und im wesentlichen mittig angeordnet ist. Die beiden geringfügig erweiterten Anschlussflansche sind mit 77, 79 bezeichnet. 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.

Figur 8 zeigt das untere Teilstück des in Figur 7 komplett dargestellten Rohrbogens. Hierbei sind die nach vorne pfeilförmig abgeschrägten Verbindungsfedern mit 69 bezeichnet, weiterhin ist auch die äußere Justier- und Verbindungsleiste 68 zur Aufnahme der im Prinzip geraden Schnittkante des oberen Teilstückes sichtbar. FIG. 8 shows the lower part of the in FIG. 7 completely illustrated pipe bend. Here, 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.

Figur 9 zeigt ein weiteres Ausführungsbeispiel, nicht gemäß der Erfindung, in Form eines Umlenkstückes 80 zwischen einem Flachkanal und einem kreisrunden Kanal, um eine Verbindung zwischen Flachkanälen und Rundkanälen zu ermöglichen. 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.

Bei diesem besonderen Ausführungsbeispiel gibt es einige konstruktive Besonderheiten. So sind hier die beiden, zueinander parallel geführten Leitelemente nicht parallel zur Innenwand beziehungsweise Außenwand. Um ein gleich großes Durchgangsvolumen für das Fluid aufrecht zu erhalten, ergibt sich auch vom Flachkanal zum Rundkanal eine Verjüngung des Kanalabschnittes. Schließlich ist auch keine Herstellung aus zwei Teilstücken vorgesehen, sondern die Anfertigung von kompletten Einsatzteilen 86, 88 mit Seitenabschnitten 87 beziehungsweise 89. Hierbei sind die zwei vorgesehenen Leitelemente als komplette Bauteile 86. 88 mit Seitenwänden 87 bzw. 89 ausgebildet, die als ganzes in den Rohrbogen eingeschoben und verankert werden. Die Seitenwände dieser Leitelemente und die entsprechenden Außenwände des Umlenk-Rohrbogens sind so gestaltet, dass sie im eingebauten Zustand miteinander bündig sind und somit keinen zusätzlichen Wandwiderstand ergeben. Die schmälere Kante 90 des inneren Leitelementes 88 greift hierbei geringfügig in den Flanschbereich 92 des kreisrunden Anschlussstückes ein, der für das Überschieben eines runden Kanal- Anschlussstückes ausgebildet ist. Diese Leitelemente sind somit etwas aufwändiger in der Herstellung, erlauben jedoch einen Verzicht auf eine zweiteilige Herstellung der Rohrbögen. Selbstverständlich ist diese andersartige Technik bei allen möglichen Rohrbögen und nicht nur bei dem gezeigten Umlenkstück einsetzbar.In this particular embodiment, there are some design features. So here are the two, parallel guided guide elements not parallel to the inner wall or outer wall. In order to maintain an equal throughput volume for the fluid, there is also a rejuvenation of the channel section from the flat channel to the circular channel. Finally, no production of two sections is provided, but the preparation of complete inserts 86, 88 with side portions 87 and 89. Here are the two provided guide elements as complete components 86. 88 formed with side walls 87 and 89, as a whole in the Pipe bend inserted and anchored. The side walls of these vanes and the corresponding outer walls of the Umlenk-pipe bend are designed so that they are flush with each other in the installed state and thus give no additional wall resistance. 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. Of course, this different type of technology can be used in all possible pipe bends and not only in the deflector shown.

Figur 10 zeigt das komplette Anschlussstück 80. wobei der Flachkanal 82 vertikal und der kreisrunde Kanal 84 horizontal angeordnet sind. Gut sichtbar sind das äußere Leitelement 86 und das innere Leitelement 84. Bei diesem Ausführungsbeispiel ist die Austrittsbreite des mittleren Kanales um etwa 20 Prozent breiter als die beiden anderen Kanäle ausgebildet. Ähnliches gilt auch für den Bereich des Flachkanales. 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. 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.

Figur 11 zeigt den Querschnitt durch den Umlenkstück-Rohrbogen von Figur 10. Hier sind insbesondere die genauen Krümmungen von Außenwandung 92, äußerem Leitblech 86, innerem Leitblech 88, das in den Flanschbereich des Rundanschlusses 84 geringfügig hineinragt. 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.

Die gekrümmte Außenfläche 92 beschreibt, ausgehend vom kreisrunden Kanalanschluss, im Wesentlichen zunächst einen Kreisbogen mit großem Radius und geht dann in eine ebene Fläche in Richtung zum Flachkanalanschluss über. Das äußere Leitelement 86 und das innere Leitelement 88 haben im Wesentlichen die Form einer Ellipse. Die Kanalbreiten des Flachkanal-Anschlusses und des Rundkanal-Anschlusses stehen hierbei im gleichen Verhältnis zueinander.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. Pipe bend (10; 60) for fluid ducts with a curved inner wall (29; 63) and a curved outer wall (25; 65) and with at least one rigid fluid guiding element (26, 27; 62), wherein the at least one guiding element is run parallel to the curved inner wall (29; 63) and the curved outer wall (25; 65), characterized in that the pipe bend (10; 60) is assembled from two sections (20, 40; 70), wherein the outer wall (25; 65) is divided in two with opposite cut edges, and the inner wall (29; 63) is divided in two with opposite cut edges, and the at least one guiding element (26, 29; 62) is divided in two with opposite cut edges (46, 47), wherein the cut edge (46, 47) of the at least one guiding element (26, 27; 62) can be engaged at least in some sections via a spring profile (49, 50; 69) in a groove in the opposite cut edge of the other section of the respective guiding element, and the opposite cut edges are connected by means of sealing and bonding means or by welding to one another and wherein on one of the mutually facing cut edges of inner wall (29; 63) and outer wall (25; 65), at least in some sections, an overlapping engagement edge (28; 68) for the substantially straight cut edge of the other section of the pipe bend (10; 60) including the connection flange (43, 42; 77, 79) of the pipe bend is arranged, wherein the two edges are sealingly bonded or welded to one another.
  2. Pipe bend according to Claim 1, characterized in that a vertical flat duct bend (60), preferably of 90°, is provided, wherein, in its central line, symmetrically, a single guiding element (62) is provided.
  3. Pipe bend according to Claim 1 or 2, characterized in that a horizontal flat duct bend, preferably of 90°, is provided, in which two guiding elements (26, 27) are provided parallel to one another and to the curved inner wall (29) as well as to the curved outer wall (25), wherein the outer guiding element (26) is provided approximately in the center of the duct, and the inner guiding element (27) is arranged between curved inner wall (29) and the outer guiding element (26), in such a manner that the outer duct width is approximately twice as large as the duct width of the two inner ducts.
  4. Pipe bend according to any one of Claims 1 to 3, characterized in that the grooves and the associated spring profiles (49, 50; 69) are beveled toward one side, in order to facilitate production and installation.
  5. Pipe bend according to any one of Claims 1 to 4, characterized in that, on both opposite cut edges (46, 47) of the sections of the at least one guiding element (26, 27; 62), engagement grooves are provided, which are connected to one another by a spring profile (49, 50; 69).
  6. Pipe bend according to Claim 5, characterized in that, along the cut edges (46, 47) of the two opposite sections of the at least one guiding element (20, 40; 60), spring profiles (49, 50; 69) and grooves are mutually offset, in order to simplify the assembly.
  7. Pipe bend according to any one of Claims 1 to 6, characterized in that the sections of the overlapping engagement edges (28; 68) alternate along the cut edges of the two sections (20, 40; 60) between inner wall (29; 63) and outer wall (25; 65), preferably in each case over half the edge length.
  8. Pipe bend according to any one of Claims 1 to 7, characterized in that the connection flanges (22) have inner edges (51) towards the terminal edge, which are beveled in order to improve the connection, the seal, the flow resistance and the noise generation.
EP05024982.0A 2005-11-16 2005-11-16 Bend for a fluid duct Active EP1788259B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES08004098T ES2343388T3 (en) 2005-11-16 2005-11-16 ELBOW FOR FLUID DUCTS.
EP05024982.0A EP1788259B2 (en) 2005-11-16 2005-11-16 Bend for a fluid duct
AT08004098T ATE460588T1 (en) 2005-11-16 2005-11-16 PIPE ELBOW FOR FLUID CHANNELS
ES05024982.0T ES2543590T5 (en) 2005-11-16 2005-11-16 Elbow for fluid pipes
DE502005009215T DE502005009215D1 (en) 2005-11-16 2005-11-16 Pipe bend for fluid channels
EP08004098A EP1923576B1 (en) 2005-11-16 2005-11-16 Bend for a fluid duct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05024982.0A EP1788259B2 (en) 2005-11-16 2005-11-16 Bend for a fluid duct

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP08004098A Division-Into EP1923576B1 (en) 2005-11-16 2005-11-16 Bend for a fluid duct
EP08004098A Division EP1923576B1 (en) 2005-11-16 2005-11-16 Bend for a fluid duct

Publications (3)

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

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ID=36177659

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EP05024982.0A Active EP1788259B2 (en) 2005-11-16 2005-11-16 Bend for a fluid duct
EP08004098A Active EP1923576B1 (en) 2005-11-16 2005-11-16 Bend for a fluid duct

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08004098A Active EP1923576B1 (en) 2005-11-16 2005-11-16 Bend for a fluid duct

Country Status (4)

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EP (2) EP1788259B2 (en)
AT (1) ATE460588T1 (en)
DE (1) DE502005009215D1 (en)
ES (2) ES2543590T5 (en)

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Publication number Priority date Publication date Assignee Title
EP4067753A2 (en) 2021-03-31 2022-10-05 Naber Holding GmbH & Co. KG Flat channel arrangement for a downdraft extractor hood

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CN102155478A (en) * 2011-04-28 2011-08-17 唐力南 Bend pipe flow rate regulator
DE202017105556U1 (en) * 2017-09-14 2017-09-26 Naber Holding Gmbh & Co. Kg Flat channel connector for a flat channel and a corresponding channel arrangement
CN112983846A (en) 2019-12-02 2021-06-18 开利公司 Centrifugal compressor and method for operating a centrifugal compressor
CZ2020381A3 (en) * 2020-06-29 2021-08-25 Oil&Gas Metering Equipment S.R.O. Gas flow deflector in a flow bend for an ultrasonic gas meter
DE102021113234B4 (en) 2021-05-21 2022-12-15 Naber Holding Gmbh & Co. Kg Pipe bend for an exhaust air duct of an extractor hood
DE102021113244A1 (en) 2021-05-21 2022-11-24 Naber Holding Gmbh & Co. Kg Downdraft Element and Arrangement
DE102021113249B4 (en) * 2021-05-21 2023-04-27 Naber Holding Gmbh & Co. Kg Pipe bend for an exhaust air duct of an extractor hood
CN115419616A (en) * 2022-09-05 2022-12-02 江森自控空调冷冻设备(无锡)有限公司 Air suction pipe of centrifugal compressor

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DE913600C (en) † 1952-08-17 1954-06-18 Armco Int Corp Connection arrangement for assemblable drainpipes
DE2720451A1 (en) † 1976-05-07 1977-11-24 Saunier Duval CONNECTING ELBOW FOR TWO CONCENTRIC TUBES
DE3807688C2 (en) † 1988-03-09 1995-04-13 Horst Severyns Method and device for producing a plastic pipe fitting
EP0765974A1 (en) † 1995-09-28 1997-04-02 Emhart Inc. Hub connection assembly
DE10227689A1 (en) † 2002-06-21 2004-01-08 Ina-Schaeffler Kg Linear roller bearing has tube as return section of roller guide which is made up of two halves held together by cooperating tongues and grooves
EP1570926A1 (en) † 2004-03-03 2005-09-07 Manfred Strub Method of making an elbow for a downpipe, an elbow piece and a downpipe

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Publication number Priority date Publication date Assignee Title
EP4067753A2 (en) 2021-03-31 2022-10-05 Naber Holding GmbH & Co. KG Flat channel arrangement for a downdraft extractor hood

Also Published As

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

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