EP2934982B1 - Air-conditioning assembly for a rail vehicle - Google Patents

Air-conditioning assembly for a rail vehicle Download PDF

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Publication number
EP2934982B1
EP2934982B1 EP14702602.5A EP14702602A EP2934982B1 EP 2934982 B1 EP2934982 B1 EP 2934982B1 EP 14702602 A EP14702602 A EP 14702602A EP 2934982 B1 EP2934982 B1 EP 2934982B1
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EP
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Prior art keywords
air
pressure loss
conditioning arrangement
arrangement according
outlets
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German (de)
French (fr)
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EP2934982A1 (en
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Nkwenti Azong-Wara
Alexander Hildebrandt
Timothy Ruiter
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Siemens Mobility GmbH
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Siemens Mobility GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D27/00—Heating, cooling, ventilating, or air-conditioning
    • B61D27/0018—Air-conditioning means, i.e. combining at least two of the following ways of treating or supplying air, namely heating, cooling or ventilating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D27/00—Heating, cooling, ventilating, or air-conditioning
    • B61D27/009—Means for ventilating only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D27/00—Heating, cooling, ventilating, or air-conditioning

Definitions

  • the invention relates to an air conditioning arrangement for a rail vehicle, having an air distribution box, which has an air inlet and at least two air outlets for connection to further air ducts.
  • air conditioning arrangements for rail vehicles are for example from the DE 10 2009 025 299 A1 , of the EP 0 149 450 A2 , of the WO 2011/131444 A1 and the DE 26 13 608 A1 known.
  • the publication DE 10 2005 031912 A1 discloses an air distribution box having an air inlet and two air outlets, wherein a variable louvered throttle device is provided.
  • Air distribution boxes and other components with air distribution characteristics are used in rail vehicles to supply various parts of the air duct system with the required air volumes. Air distribution boxes thereby regularly provide the interface to an air conditioner, in particular a compact air conditioning unit, which supplies conditioned air to the air distribution box via the air inlet.
  • the Luftverteilbox can not take over their air distribution function for a variety of different rail vehicles and thus also different air duct arrangements. Therefore, in known air duct arrangements, depending on the railcar configuration at the air distribution box, adjustment is made by throttling at the air outlets. A setting made is then checked by tests, for example, in a climatic chamber, until the appropriate setting for the present rail vehicle design is found. Nonlinear properties of the typically complex air duct arrangement lead to a high number of test steps.
  • the invention has the object, an air conditioning arrangement of the type mentioned in such a way that finding the appropriate Setting for the throttling at the air outlets of the air distribution box is reduced in terms of their effort.
  • a Throttle device is associated, which is formed by a perforated plate, and between the air outlet and an air distribution space within the Beerverteilbox, in which the air coming from the air inlet air flow is divided into at least two partial air streams, arranged, wherein pressure loss coefficients of the at least two throttle devices so selected are that results in a predetermined value for a ratio of air flow rates at the at least two air outlets.
  • the pressure loss coefficients of the at least two throttle devices are typically in a relationship to one another which corresponds to a quadratic ratio of air flow rates in the range of the at least two air outlets. In this way, the required pressure loss coefficients can be derived on the basis of the respective desired flow rates at the air outlets.
  • the pressure loss coefficients of the at least two throttle devices may be selected such that a pressure loss occurring in each case at the throttle devices corresponds to at least twice the pressure loss of an air duct system connected to the air outlet.
  • This pressure loss at the throttle devices may also correspond to a multiple of the pressure loss of the air duct system connected to the air outlet.
  • the at least two throttle devices may each be greater than 7. This value ensures that the pressure loss at the respective throttle device is generally greater in rail vehicles than the pressure loss of continuing air ducts.
  • the at least two throttle devices are each formed by a perforated plate.
  • the perforated plates may have a ratio of plate thickness to hole diameter of more than 1.5. This has the advantage that the perforated plates unfold the effect of a rectifier, so that the influence of non-linear properties of the air flows is further reduced. Also unfavorable effects of detachments on heating / cooling flaps, with which Heilverteilboxen are regularly equipped, effectively reduced by the rectifier function of the perforated plates.
  • a sound damping device may be provided between the air inlet and the air distribution space.
  • Such Schalldämpf are ideally designed so that turbulence of the air flow are reduced.
  • the sound damping device may preferably be designed in such a way that an air flow coming from the air inlet is distributed over a plurality of flow paths arranged next to one another and brought together again behind the sound damping device. This results in an air distribution function of the Schalldämpf issued, which, as explained above, is advantageous for a subsequent fine adjustment of the air duct arrangement in the rail vehicle.
  • an air distribution box 1 has an air inlet 2, which will typically be connected to an air conditioning unit of a railway vehicle. From the air inlet 2, air to be transported into the interior of the rail vehicle first flows through a sound damping device 3, which is formed by four flow paths 4 arranged side by side in the illustrated embodiment, each at a small angle. After leaving the Schalldämpf Rhein 3 enters the incoming air into an air distribution space 4 within the Heilverteilbox 1, in which the coming of the air inlet 2 air flow is divided into two partial air streams, as in FIG. 1 is illustrated by arrows.
  • the Heilverteilbox 1 is equipped with two air outlets 5, 6, via which the respective partial air flows to further air ducts, which are connected to the outlets 5, 6, is transported.
  • Each of the air outlets 5, 6 is associated with a throttle device designed as a perforated plate 7, 8, wherein the respective perforated plate 7, 8 is arranged between its associated air outlet 5, 6 and the air distribution space 4. Between the perforated plates 7, 8 and the associated air outlets 5, 6, the partial air streams are passed through channel elements 9, 10.
  • the perforated plates, 7, 8 have pressure loss coefficients, which are dimensioned such that for a ratio of air flow rates of the two partial air flows at the air outlets 5, 6 results in a predetermined value. This corresponds to the Ratio of the pressure loss coefficients of the perforated plates 7, 8 the quadratic ratio of the flow velocities in the region of the air outlets 5, 6.
  • the perforated plates 7, 8 have a ratio of plate thickness to hole diameter of greater than 1.5, so that the perforated plates 7, 8 have additional properties of a rectifier. ( Idelchik, Handbook of hydaulic resistance, Springer Verlag 1986, page 404, diagram 8-3 )
  • one of the perforated plates 7, 8 be 30mm thick, have holes with a diameter of 20mm and a free cross-section of about 35%.
  • Such a perforated plate has a pressure loss coefficient of about 7.5. This value ensures that the pressure loss coefficient of the perforated plate 7, 8 would correspond to at least twice the pressure loss of typical air duct systems of rail vehicles connected to the air outlets 5, 6.
  • the pressure loss coefficients of the perforated plates 7, 8 are to be selected accordingly.
  • the pressure loss coefficients of 7.5 and 12.0 for the perforated plates 7, 8 in the illustrated air-conditioning arrangement cause an air flow ratio of 1: 1.8.
  • Other conditions can be realized by suitable adjustment of the pressure loss coefficients of the perforated plates used.
  • the perforated plates 7, 8 are arranged substantially perpendicular to the air currents prevailing in their region, so that they bring about a desired pressure loss, before the partial air streams leave the air dividing box at the air outlets 5 and 6.
  • the coarse adjustment of the volume flow distribution brought about by the perforated plates 7, 8 for different configurations of rail vehicle carriages on the air distribution box 1 reduces the setting effort on the individual carriages (end carriages, center carriages) since only a fine adjustment is made got to. Effects of the fine adjustment are reduced by the rectifying effect of both the Schalldämpf worn 3 and the perforated plates 7, 8 by damping the non-linear properties.
  • a positive effect of the coarse adjustment of the volumetric flow distribution caused by the perforated plates 7, 8 may be that previously required air guiding devices, such as baffles and deflections, may possibly be dispensed with.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Duct Arrangements (AREA)

Description

Die Erfindung bezieht sich auf eine Klimatisierungsanordnung für ein Schienenfahrzeug, mit einer Luftverteilbox, die einen Lufteinlass und wenigstens zwei Luftauslässe zum Anschluss an weiterführende Luftkanäle aufweist. Solche Klimatisierungsanordnungen für Schienenfahrzeuge sind beispielsweise aus der DE 10 2009 025 299 A1 , der EP 0 149 450 A2 , der WO 2011/131444 A1 und der DE 26 13 608 A1 bekannt.The invention relates to an air conditioning arrangement for a rail vehicle, having an air distribution box, which has an air inlet and at least two air outlets for connection to further air ducts. Such air conditioning arrangements for rail vehicles are for example from the DE 10 2009 025 299 A1 , of the EP 0 149 450 A2 , of the WO 2011/131444 A1 and the DE 26 13 608 A1 known.

Die Druckschrift DE 10 2005 031912 A1 offenbart eine Luftverteilerbox mit einem Lufteinlass und zwei Luftauslässen, wobei eine mit verstellbaren Lamellen versehene Drosseleinrichtung vorgesehen ist.The publication DE 10 2005 031912 A1 discloses an air distribution box having an air inlet and two air outlets, wherein a variable louvered throttle device is provided.

Luftverteilboxen und andere Komponenten mit Luftverteileigenschaften, wie Schalldämpfer, werden in Schienenfahrzeugen benutzt, um verschiedene Teile des Luftkanalsystems mit den benötigten Luftmengen zu versorgen. Luftverteilboxen stellen dabei regelmäßig die Schnittstelle zu einem Klimagerät, insbesondere Kompaktklimagerät, dar, das der Luftverteilbox über den Lufteinlass aufbereitete Luft zuführt.Air distribution boxes and other components with air distribution characteristics, such as mufflers, are used in rail vehicles to supply various parts of the air duct system with the required air volumes. Air distribution boxes thereby regularly provide the interface to an air conditioner, in particular a compact air conditioning unit, which supplies conditioned air to the air distribution box via the air inlet.

Die Luftverteilbox kann ihre Luftverteilfunktion allerdings nicht für eine Vielfalt unterschiedlicher Schienenfahrzeuge und damit auch verschiedene Luftkanalanordnungen übernehmen. Daher wird bei bekannten Luftkanalanordnungen je nach Schienenfahrzeugwagenkonfiguration an der Luftverteilbox eine Einstellung durch Drosselung an den Luftauslässen vorgenommen. Eine vorgenommene Einstellung wird dann durch Versuche beispielsweise in einer Klimakammer überprüft, bis die geeignete Einstellung für die vorliegende Schienenfahrzeugausführung gefunden ist. Dabei führen nichtlineare Eigenschaften der typischerweise komplexen Luftkanalanordnung zu einer hohen Anzahl an Versuchsschritten.However, the Luftverteilbox can not take over their air distribution function for a variety of different rail vehicles and thus also different air duct arrangements. Therefore, in known air duct arrangements, depending on the railcar configuration at the air distribution box, adjustment is made by throttling at the air outlets. A setting made is then checked by tests, for example, in a climatic chamber, until the appropriate setting for the present rail vehicle design is found. Nonlinear properties of the typically complex air duct arrangement lead to a high number of test steps.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Klimatisierungsanordnung der eingangs genannten Art derart weiterzuentwickeln, dass das Auffinden der geeigneten Einstellung für die Drosselung an den Luftauslässen der Luftverteilbox hinsichtlich ihres Aufwands vermindert wird.Proceeding from this, the invention has the object, an air conditioning arrangement of the type mentioned in such a way that finding the appropriate Setting for the throttling at the air outlets of the air distribution box is reduced in terms of their effort.

Diese Aufgabe wird bei der eingangs genannten Klimatisierungsanordnung dadurch gelöst, dass zur Vornahme einer Grobeinstellung für ein Verhältnis von Luftvolumenströmen an den Luftauslässen jedem Luftauslass eine Drosseleinrichtung zugeordnet ist, die von einer Lochplatte gebildet ist, und zwischen dem Luftauslass und einem Luftaufteilungsraum innerhalb der Luftverteilbox, in dem der von dem Lufteinlass kommende Luftstrom auf wenigstens zwei Teil-Luftströme aufgeteilt ist, angeordnet ist, wobei Druckverlustbeiwerte der wenigstens zwei Drosseleinrichtungen derart gewählt sind, dass sich für ein Verhältnis von Luftvolumenströmen an den wenigstens zwei Luftauslässen ein vorgegebener Wert ergibt.This object is achieved in the above-mentioned air conditioning arrangement in that for making a coarse adjustment for a ratio of air flow rates at the air outlets each air outlet a Throttle device is associated, which is formed by a perforated plate, and between the air outlet and an air distribution space within the Luftverteilbox, in which the air coming from the air inlet air flow is divided into at least two partial air streams, arranged, wherein pressure loss coefficients of the at least two throttle devices so selected are that results in a predetermined value for a ratio of air flow rates at the at least two air outlets.

Der Einsatz der den jeweiligen Luftauslässen zugeordneten Drosseleinrichtungen ermöglicht es, für das Verhältnis der Luftvolumenströme an den Luftauslässen eine Grobeinstellung vorzunehmen, so dass bei ein- und derselben Luftverteilbox, eingesetzt in verschiedenen Schienenfahrzeugen mit verschiedenen Luftkanalanordnungen lediglich noch Feinjustierungen für Drosselungen stromabwärts der Luftauslässe erforderlich sind. Dies vermindert den Aufwand hinsichtlich der Einstellung der Luftkanalanordnung, um gewünschte Luftvolumenströme in den weiterführenden Luftkanälen zu erhalten.The use of the respective air outlets associated throttle devices makes it possible to make a coarse adjustment for the ratio of the air flow rates at the air outlets, so that in one and the same Luftverteilbox used in various rail vehicles with different air duct arrangements only fine adjustments for throttling downstream of the air outlets are required. This reduces the effort in terms of setting the air duct arrangement to obtain desired air flow rates in the continuing air ducts.

Die Druckverlustbeiwerte der wenigstens zwei Drosseleinrichtungen stehen typischer Weise in einem Verhältnis zueinander, das einem quadratischen Verhältnis von Luftströmungsgeschwindigkeiten im Bereich der wenigstens zwei Luftauslässe entspricht. In dieser Weise lassen sich die erforderlichen Druckverlustbeiwerte anhand der jeweils an den Luftauslässen gewünschten Strömungsgeschwindigkeiten ableiten.The pressure loss coefficients of the at least two throttle devices are typically in a relationship to one another which corresponds to a quadratic ratio of air flow rates in the range of the at least two air outlets. In this way, the required pressure loss coefficients can be derived on the basis of the respective desired flow rates at the air outlets.

Die Druckverlustbeiwerte der wenigstens zwei Drosseleinrichtungen können derart gewählt sein, dass ein jeweils an den Drosseleinrichtungen auftretender Druckverlust wenigstens dem Doppelten des Druckverlustes eines an den Luftauslass angeschlossenen Luftkanalsystems entspricht. Dieser Druckverlust an den Drosseleinrichtungen kann auch einem Vielfachen des Druckverlusts des an den Luftauslass angeschlossenen Luftkanalsystems entsprechen. Diese Vorgehensweise hat den Vorteil, dass die Drosseleinrichtungen nichtlineare Eigenschaften der Luftvolumenströme verringern und somit auch unvorhersehbare Effekte für die Feineinstellung der Luftvolumenströme an den Luftauslässen.The pressure loss coefficients of the at least two throttle devices may be selected such that a pressure loss occurring in each case at the throttle devices corresponds to at least twice the pressure loss of an air duct system connected to the air outlet. This pressure loss at the throttle devices may also correspond to a multiple of the pressure loss of the air duct system connected to the air outlet. This approach has the advantage that the throttling devices reduce non-linear properties of the air volume flows and thus also unpredictable Effects for the fine adjustment of the air volume flows at the air outlets.

Beispielsweise können die Luftdruckverlustbeiwerte der wenigstens zwei Drosseleinrichtungen jeweils größer als 7 sein. Dieser Wert gewährleistet, dass der Druckverlust an der betreffenden Drosseleinrichtung im Regelfall bei Schienenfahrzeugen größer ist als der Druckverlust weiterführender Luftkanäle.For example, the Luftdruckverlustbeiwerte the at least two throttle devices may each be greater than 7. This value ensures that the pressure loss at the respective throttle device is generally greater in rail vehicles than the pressure loss of continuing air ducts.

Die wenigstens zwei Drosseleinrichtungen sind jeweils von einer Lochplatte gebildet. Dabei können die Lochplatten ein Verhältnis von Plattenstärke zu Lochdurchmesser von mehr als 1,5 aufweisen. Dies hat den Vorteil, dass die Lochplatten die Wirkung eines Gleichrichters entfalten, so dass die Einwirkung nicht linearer Eigenschaften der Luftströmungen weiter vermindert wird. Auch werden ungünstige Effekte von Ablösungen an Heiz-/Kühlklappen, mit denen Luftverteilboxen regelmäßig ausgestattet sind, durch die Gleichrichterfunktion der Lochplatten wirksam verringert.The at least two throttle devices are each formed by a perforated plate. The perforated plates may have a ratio of plate thickness to hole diameter of more than 1.5. This has the advantage that the perforated plates unfold the effect of a rectifier, so that the influence of non-linear properties of the air flows is further reduced. Also unfavorable effects of detachments on heating / cooling flaps, with which Luftverteilboxen are regularly equipped, effectively reduced by the rectifier function of the perforated plates.

Zwischen dem Lufteinlass und dem Luftaufteilungsraum kann eine Schalldämpfeinrichtung vorgesehen sein. Solche Schalldämpfeinrichtungen sind idealerweise derart ausgelegt, dass Verwirbelungen der Luftströmung vermindert werden. Bevorzugt kann dabei die Schalldämpfeinrichtung derart ausgebildet sein, dass ein von dem Lufteinlass kommender Luftstrom auf mehrere, nebeneinander angeordnete Strömungsstrecken verteilt und hinter der Schalldämpfeinrichtung wieder zusammengeführt wird. Hieraus ergibt sich eine Luftverteilfunktion der Schalldämpfeinrichtung, die, wie oben erläutert, für eine spätere Feineinstellung der Luftkanalanordnung im Schienenfahrzeug vorteilhaft ist.A sound damping device may be provided between the air inlet and the air distribution space. Such Schalldämpfeinrichtungen are ideally designed so that turbulence of the air flow are reduced. In this case, the sound damping device may preferably be designed in such a way that an air flow coming from the air inlet is distributed over a plurality of flow paths arranged next to one another and brought together again behind the sound damping device. This results in an air distribution function of the Schalldämpfeinrichtung, which, as explained above, is advantageous for a subsequent fine adjustment of the air duct arrangement in the rail vehicle.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend unter Bezugnahme auf die Zeichnungen noch näher erläutert. Es zeigen:

Figur 1
eine Querschnittsansicht einer Luftverteilbox zum Anschluss an weiterführende Luftkanäle innerhalb eines Schienenfahrzeugs und
Figur 2
eine perspektivische Ansicht der Luftverteilbox von Figur 1.
An embodiment of the invention will be explained in more detail with reference to the drawings. Show it:
FIG. 1
a cross-sectional view of an air distribution box for connection to further air ducts within a rail vehicle and
FIG. 2
a perspective view of the Luftverteilbox of FIG. 1 ,

Wie in Figur 1 veranschaulicht ist, weist eine Luftverteilbox 1 einen Lufteinlass 2 auf, der typischer Weise an ein Klimagerät eines Schienenfahrzeugs angeschlossen sein wird. Von dem Lufteinlass 2 aus, strömt in das Innere des Schienenfahrzeugs zu transportierende Luft zunächst durch eine Schalldämpfeinrichtung 3, die von im dargestellten Ausführungsbeispiel vier nebeneinander angeordneten, jeweils in einem geringen Winkel zueinander stehenden Strömungsstrecken 4 gebildet ist. Nach Verlassen der Schalldämpfeinrichtung 3 gelangt die einströmende Luft in einen Luftaufteilungsraum 4 innerhalb der Luftverteilbox 1, in dem der von dem Lufteinlass 2 kommende Luftstrom auf zwei Teil-Luftströme aufgeteilt wird, wie es in Figur 1 durch Pfeile veranschaulicht ist.As in FIG. 1 1, an air distribution box 1 has an air inlet 2, which will typically be connected to an air conditioning unit of a railway vehicle. From the air inlet 2, air to be transported into the interior of the rail vehicle first flows through a sound damping device 3, which is formed by four flow paths 4 arranged side by side in the illustrated embodiment, each at a small angle. After leaving the Schalldämpfeinrichtung 3 enters the incoming air into an air distribution space 4 within the Luftverteilbox 1, in which the coming of the air inlet 2 air flow is divided into two partial air streams, as in FIG. 1 is illustrated by arrows.

Die Luftverteilbox 1 ist mit zwei Luftauslässen 5, 6 ausgestattet, über die die jeweiligen Teil-Luftströme an weiterführende Luftkanäle, die an die Auslässe 5, 6 angeschlossen sind, transportiert wird.The Luftverteilbox 1 is equipped with two air outlets 5, 6, via which the respective partial air flows to further air ducts, which are connected to the outlets 5, 6, is transported.

Dabei ist jedem der Luftauslässe 5, 6 eine als Lochplatte 7, 8 ausgebildete Drosseleinrichtung zugeordnet, wobei die jeweilige Lochplatte 7, 8 zwischen dem ihr zugeordneten Luftauslass 5, 6 und dem Luftaufteilungsraum 4 angeordnet ist. Zwischen den Lochplatten 7, 8 und den zugeordneten Luftauslässen 5, 6 werden die Teil-Luftströme durch Kanalelemente 9, 10 geführt.Each of the air outlets 5, 6 is associated with a throttle device designed as a perforated plate 7, 8, wherein the respective perforated plate 7, 8 is arranged between its associated air outlet 5, 6 and the air distribution space 4. Between the perforated plates 7, 8 and the associated air outlets 5, 6, the partial air streams are passed through channel elements 9, 10.

Die Lochplatten, 7, 8 weisen Druckverlustbeiwerte auf, die derart bemessen sind, dass sich für ein Verhältnis von Luftvolumenströmen der beiden Teil-Luftströme an den Luftauslässen 5, 6 ein vorgegebener Wert ergibt. Dabei entspricht das Verhältnis der Druckverlustbeiwerte der Lochplatten 7, 8 dem quadratischen Verhältnis der Strömungsgeschwindigkeiten im Bereich der Luftauslässe 5, 6.The perforated plates, 7, 8 have pressure loss coefficients, which are dimensioned such that for a ratio of air flow rates of the two partial air flows at the air outlets 5, 6 results in a predetermined value. This corresponds to the Ratio of the pressure loss coefficients of the perforated plates 7, 8 the quadratic ratio of the flow velocities in the region of the air outlets 5, 6.

Die Lochplatten 7, 8 weisen ein Verhältnis von Plattenstärke zu Lochdurchmesser von größer 1,5 auf, so dass die Lochplatten 7, 8 zusätzliche Eigenschaften eines Gleichrichters haben. ( Idelchik, Handbook of hydaulic resistance, Springer Verlag 1986, Seite 404, Diagramm 8-3 )The perforated plates 7, 8 have a ratio of plate thickness to hole diameter of greater than 1.5, so that the perforated plates 7, 8 have additional properties of a rectifier. ( Idelchik, Handbook of hydaulic resistance, Springer Verlag 1986, page 404, diagram 8-3 )

Beispielsweise kann eine der Lochplatten 7, 8 30mm dick sein, Löcher mit einem Durchmesser von 20mm aufweisen sowie einen freien Querschnitt von ca. 35%. Eine solche Lochplatte hat einen Druckverlustbeiwert von ca. 7,5. Dieser Wert gewährleistet, dass der Druckverlustbeiwert der Lochplatte 7, 8 wenigstens dem Doppelten des Druckverlusts typischer, an die Luftauslässe 5, 6 angeschlossener Luftkanalsysteme von Schienenfahrzeugen entspräche. Um die beabsichtigte Grobeinstellung für das Verhältnis der Luftvolumenströme an den Auslässen 5, 6 einzustellen, sind die Druckverlustbeiwerte der Lochplatten 7, 8 entsprechend zu wählen. Beispielsweise bewirken die Druckverlustbeiwerte von 7,5 und 12,0 für die Lochplatten 7,8 in der gezeigten Klimatisierungsanordnung ein Luftvolumenstromverhältnis von 1:1,8. Andere Verhältnisse können durch geeignete Einstellung der Druckverlustbeiwerte der eingesetzten Lochplatten realisiert werden.For example, one of the perforated plates 7, 8 be 30mm thick, have holes with a diameter of 20mm and a free cross-section of about 35%. Such a perforated plate has a pressure loss coefficient of about 7.5. This value ensures that the pressure loss coefficient of the perforated plate 7, 8 would correspond to at least twice the pressure loss of typical air duct systems of rail vehicles connected to the air outlets 5, 6. In order to set the intended coarse adjustment for the ratio of the air volume flows at the outlets 5, 6, the pressure loss coefficients of the perforated plates 7, 8 are to be selected accordingly. For example, the pressure loss coefficients of 7.5 and 12.0 for the perforated plates 7, 8 in the illustrated air-conditioning arrangement cause an air flow ratio of 1: 1.8. Other conditions can be realized by suitable adjustment of the pressure loss coefficients of the perforated plates used.

Die Lochplatten 7, 8 sind im Wesentlichen senkrecht zu den in ihrem Bereich herrschenden Luftströmungen angeordnet, so dass sie einen gewünschten Druckverlust bewirken, bevor die Teil-Luftströme die Luftteilbox an den Luftauslässen 5 und 6 verlassen.The perforated plates 7, 8 are arranged substantially perpendicular to the air currents prevailing in their region, so that they bring about a desired pressure loss, before the partial air streams leave the air dividing box at the air outlets 5 and 6.

Die durch die Lochplatten 7, 8 bewirkte Grobeinstellung der Volumenstromverteilung für verschiedene Konfigurationen von Schienenfahrzeugwagen an der Luftverteilbox 1, verringert den Einstellaufwand an den einzelnen Wagen (Endwagen, Mittelwagen), da nur noch eine Feineinstellung vorgenommen werden muss. Effekte der Feineinstellung werden durch die gleichrichtende Wirkung sowohl der Schalldämpfeinrichtung 3 als auch der Lochplatten 7, 8 durch Dämpfung der nichtlinearen Eigenschaften vermindert. Ein positiver Effekt der durch die Lochplatten 7, 8 bewirkten Grobeinstellung der Volumenstromverteilung kann darin bestehen, dass bislang erforderliche Luftleiteinrichtungen, wie Leitbleche und Umlenkungen, ggf. entfallen können.The coarse adjustment of the volume flow distribution brought about by the perforated plates 7, 8 for different configurations of rail vehicle carriages on the air distribution box 1 reduces the setting effort on the individual carriages (end carriages, center carriages) since only a fine adjustment is made got to. Effects of the fine adjustment are reduced by the rectifying effect of both the Schalldämpfeinrichtung 3 and the perforated plates 7, 8 by damping the non-linear properties. A positive effect of the coarse adjustment of the volumetric flow distribution caused by the perforated plates 7, 8 may be that previously required air guiding devices, such as baffles and deflections, may possibly be dispensed with.

Claims (7)

  1. Air-conditioning arrangement for a rail vehicle, having an air distribution box (1) which has an air inlet (2) and at least two air outlets (5, 6) for connection to continuing air channels,
    characterized in that,
    in order to carry out a rough adjustment for a relationship of air volume flows at the air outlets (5, 6), there is associated with each air outlet (5, 6) a throttle device (7, 8) which is formed by a perforated plate and is arranged between the air outlet (5, 6) and an air division space (4) within the air distribution box (1), in which the air flow originating from the air inlet (2) is divided over at least two part-air flows, wherein pressure loss coefficients of the at least two throttle devices (7, 8) are selected in such a manner that a predetermined value is produced for the relationship of the air volume flows at the at least two air outlets (5, 6).
  2. Air-conditioning arrangement according to Claim 1,
    characterized in that
    the pressure loss coefficients of the at least two throttle devices (7, 8) have a relationship with each other which corresponds to a quadratic relationship of air flow speeds in the region of the at least two air outlets (5, 6).
  3. Air-conditioning arrangement according to Claim 1 or 2,
    characterized in that
    the pressure loss coefficients of the at least two throttle devices (7, 8) are selected in such a manner that a pressure loss which occurs in each case at the throttle devices (7, 8) corresponds to at least double the pressure loss of an air channel system which is connected to the air outlet (5, 6).
  4. Air-conditioning arrangement according to one of Claims 1 to 3,
    characterized in that the pressure loss coefficients of the at least two throttle devices (7, 8) are in each case greater than those of the downstream channel system.
  5. Air-conditioning arrangement according to Claim 4,
    characterized in that
    the perforated plates have a relationship of plate thickness to hole diameter of more than 1.5.
  6. Air-conditioning arrangement according to one of Claims 1 to 5,
    characterized in that
    a sound absorption device (3) is provided between the air inlet (2) and the air division space (4).
  7. Air-conditioning arrangement according to Claim 6,
    characterized in that
    the sound absorption device (3) is constructed in such a manner that an air flow originating from the air inlet (2) can be divided over a plurality of flow paths (4) which are arranged beside each other and is combined again downstream of the sound absorption device (3).
EP14702602.5A 2013-02-28 2014-02-04 Air-conditioning assembly for a rail vehicle Active EP2934982B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013203375.3A DE102013203375A1 (en) 2013-02-28 2013-02-28 Air conditioning arrangement for a rail vehicle
PCT/EP2014/052131 WO2014131582A1 (en) 2013-02-28 2014-02-04 Air-conditioning assembly for a rail vehicle

Publications (2)

Publication Number Publication Date
EP2934982A1 EP2934982A1 (en) 2015-10-28
EP2934982B1 true EP2934982B1 (en) 2019-09-18

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Application Number Title Priority Date Filing Date
EP14702602.5A Active EP2934982B1 (en) 2013-02-28 2014-02-04 Air-conditioning assembly for a rail vehicle

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US (1) US20160001790A1 (en)
EP (1) EP2934982B1 (en)
CN (1) CN205113344U (en)
CA (1) CA2902639A1 (en)
DE (1) DE102013203375A1 (en)
ES (1) ES2761549T3 (en)
PT (1) PT2934982T (en)
RU (1) RU2633610C2 (en)
WO (1) WO2014131582A1 (en)

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DE102016002347A1 (en) * 2016-03-09 2017-09-14 Siemens Aktiengesellschaft Air duct for a rail vehicle, with heating element
JP6694329B2 (en) * 2016-06-03 2020-05-13 川崎重工業株式会社 Air conditioning duct for railway vehicles
FR3074766B1 (en) * 2017-12-08 2021-05-14 Speedinnov RAILWAY VEHICLE INCLUDING A REDUCED AIR CONDITIONING UNIT
CN109703583A (en) * 2019-01-07 2019-05-03 中车株洲电力机车有限公司 A kind of city rail vehicle
FR3092306B1 (en) * 2019-02-04 2021-02-19 Alstom Transp Tech Diffusion device for vehicles, in particular for rail vehicles
CN113548072B (en) * 2021-07-27 2022-06-24 中车青岛四方机车车辆股份有限公司 Rail vehicle air supply duct structure and rail vehicle
CN115512677B (en) * 2022-08-16 2023-10-10 广州精益运输制冷设备有限公司 Noise-reducing and wind-distributing device for air conditioner of rail train

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Also Published As

Publication number Publication date
ES2761549T3 (en) 2020-05-20
DE102013203375A1 (en) 2014-08-28
CA2902639A1 (en) 2014-09-04
EP2934982A1 (en) 2015-10-28
WO2014131582A1 (en) 2014-09-04
RU2015140980A (en) 2017-04-03
US20160001790A1 (en) 2016-01-07
RU2633610C2 (en) 2017-10-13
CN205113344U (en) 2016-03-30
PT2934982T (en) 2019-11-27

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