EP3196091A1 - Lufteinnahmevorrichtung - Google Patents

Lufteinnahmevorrichtung Download PDF

Info

Publication number
EP3196091A1
EP3196091A1 EP17152039.8A EP17152039A EP3196091A1 EP 3196091 A1 EP3196091 A1 EP 3196091A1 EP 17152039 A EP17152039 A EP 17152039A EP 3196091 A1 EP3196091 A1 EP 3196091A1
Authority
EP
European Patent Office
Prior art keywords
air
shutter
pipe
flap
duct
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
EP17152039.8A
Other languages
English (en)
French (fr)
Other versions
EP3196091B1 (de
Inventor
Huu-Thi Do
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.)
Alstom Transport Technologies SAS
Original Assignee
Alstom Transport Technologies SAS
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
Application filed by Alstom Transport Technologies SAS filed Critical Alstom Transport Technologies SAS
Publication of EP3196091A1 publication Critical patent/EP3196091A1/de
Application granted granted Critical
Publication of EP3196091B1 publication Critical patent/EP3196091B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D27/00—Heating, cooling, ventilating, or air-conditioning

Definitions

  • the present invention relates to an air collection device provided with an air flow control device of the type comprising an air duct delimiting an air intake opening in a direction of air circulation, a shutter of the air duct, mounted displaceable relative to the pipe between a rest position and an at least partial closure position of the pipe, a shutter return means to its rest position, and a shutter actuating shutter, providing an exposed wall in the direction of airflow.
  • an air flow control device of the type comprising an air duct delimiting an air intake opening in a direction of air circulation, a shutter of the air duct, mounted displaceable relative to the pipe between a rest position and an at least partial closure position of the pipe, a shutter return means to its rest position, and a shutter actuating shutter, providing an exposed wall in the direction of airflow.
  • the air catching device is installed for example on a railway vehicle.
  • An air collection device can supply air to a ventilation system or an air conditioning system.
  • the ventilation system or the air conditioning system is used to renew the air or in an enclosed space.
  • This device sees its air supply strongly depend on the force and direction of the wind, as well as the direction and speed of the vehicle.
  • the air collection device is then subjected to sudden changes in air flow, causing either a waterlogging or asphyxiation of the air treatment system.
  • the document US 2,749,833 unveils a mechanical control system of an air collection device.
  • the control system obstructs the outlet of an air line with a pivoting shutter. This shutter is actuated by a pivoting flap disposed inside the pipe.
  • a mechanical return system prevents accidental slamming of the shutter and regulates the air flow.
  • the presence of the mechanical control system torments the flow of the airflow.
  • An object of the invention is to provide a flow-controlled air intake device having a slightly tormented air flow.
  • the subject of the invention is an air-catching device of the aforementioned type, characterized in that it comprises an actuating flap external to the air duct.
  • a railway vehicle 12 has on its roof an air catching device 13.
  • the device 13 is fixed rigidly to the roof of the railway vehicle 12 via a base 14 comprising, for example, four support legs 15.
  • the support legs 15 delimit a stream of air between the device 13 and the roof of the railway vehicle 12.
  • the air sensing device 13 comprises a parallelepipedal housing 16 comprising side walls 18, a bottom 20 and a cover 22.
  • the air sensing device 13 comprises a pipe 24, passing through the housing 16 from side to side longitudinally.
  • the air duct 24 is of parallelepipedal shape.
  • the pipe 24 extends longitudinally along an axis X-X substantially parallel to the direction of travel of the railway vehicle 12.
  • the pipe 24 opens out on either side of the device 13. It defines an interior volume 26.
  • a rectangular inlet mouth 28 defines an air inlet in the interior volume 26 of the device 13.
  • the inlet mouth 28 has a width of between 2 cm and 15 cm, and preferably a width of 5 cm. It has a height of between 2 cm and 10 cm, and preferably a height of 4 cm.
  • the intake mouth 28 opens towards the front of the device by considering the direction of travel of the vehicle.
  • a protective grid is fixed rigidly to the device 13 facing the inlet mouth 28.
  • An outlet port 32 defines an air outlet from the interior volume 26 of the device 13 to an air conditioning equipment not shown.
  • the outlet orifice 32 has a width of between 2 cm and 15 cm, and preferably a height of 5 cm. It has a height of between 2 cm and 13 cm, and preferably a height of 4 cm.
  • a shutter 36 is mounted movable with respect to the pipe 24, facing the inlet port 28. It is movable between a rest position and a partial closure position of the pipe 24.
  • the shutter 36 is rotatable about a horizontal shaft 38 substantially perpendicular to the X-X axis.
  • the shutter 36 is retractable by a rotational movement behind a cap 40 extending the cover 22.
  • the shutter 36 is disposed adjacent to the inlet mouth 28.
  • It comprises a front wall 42 facing the inlet mouth 28 and a ventral wall 44 facing the inner volume 26.
  • the front wall 42 has the shape of a cylinder portion. It is exposed to the direction of airflow as defined in line 24.
  • the ventral wall 44 of the shutter is a bossed surface whose convexity is turned towards the interior volume 26 of the air duct.
  • This surface is cylindrical and has a generatrix perpendicular to the axis X-X and parallel to the shaft 38.
  • the front wall 42 of the shutter 36 and the inner surface of the cap 40 have an identical radius of curvature.
  • the radius of curvature of the front wall 42 of the shutter and the cap 40 has a value of between 2 cm and 10 cm, and preferably a value of 4 cm.
  • the radius of curvature of the ventral wall 44 is between 4 cm and 40 cm and preferably substantially equal to 10 cm.
  • the shutter 36 is movable through an orifice 46 formed in the upper surface of the pipe 24.
  • the shutter 36 In its rest position, the shutter 36 is retracted out of the pipe 24 through the orifice 46, between the pipe 24 and the housing 16.
  • the shutter 36 then extends through its ventral wall 44 the upper surface of the pipe 24.
  • the shutter 36 projects into the pipe 24 thus reducing the section thereof.
  • the shaft 38 is external to the inner volume 26 of the pipe 24. It advantageously extends in the thickness of the upper wall delimiting the pipe 24. It passes through the shutter 36 and is held in position, overlooking the pipe 24 by extensions 48 of the two side walls delimiting the pipe 24.
  • the ends of the shaft 38 are open, through the extensions 48, into lateral compartments adjacent to the pipe 24 delimited by the housing 16.
  • An actuating flap 50 outside the line 24 is connected to the shutter 36 for its actuation. It comprises a plate 52 arranged transversely to the air stream, and link arms 54 passing through the bottom 20 of the housing 16 through slots in the side compartments.
  • the slots allow the movement of the actuating flap 50.
  • the arms 54 are rigidly connected at their upper ends to the pivoting shaft 38 providing a rigid connection between the flap 50 and the shutter 36.
  • each arm 54 is integral with the plate 52 which opposes the direction of air flow.
  • the plate 52 is located between the roof of the railway vehicle 12 and the base 14 of the air collection device. It extends parallel to the shutter 36.
  • the plate 52 is rectangular in shape.
  • the width of the plate 52 is between 2 cm and 10 cm, and is preferably close to a value of 5 cm. Its height is between 1 cm and 10 cm, and is preferably close to a value of 2 cm.
  • the arms 54 of the actuating flap 50 are rigidly connected to a return means 56.
  • the return means 56 outside the line 24, comprises a counterweight 58 carried by a counterweight support 60 integral with the arm 54.
  • the counterweight support 60 is located on the arm 54 between the shaft 38 and the plate 52.
  • the counterweight support 60 and the counterweight 58 are external to the pipe 24. They are contained in the lateral compartment adjacent to the air duct 24.
  • the counterweight support 60 is, for example, of the general shape of a disk portion. This disk portion extends towards the outlet mouth 32.
  • the figure 3 illustrates the device 13 in its rest position in which the flap 50 is not subjected to any air flow.
  • This rest position is characterized by the angle ⁇ rest , defined by the angle formed by the orientation of the arms 54 with the vertical axis of gravity.
  • the convex surface 44 extends the upper wall of the conduit 24 and forms a transverse lobe projecting across the width of the pipe 24, locally reducing its section and in particular its height.
  • the figure 4 illustrates the device 13 in one of its operating positions.
  • the maximum travel of the shutter is minus 45 degrees, and preferably 30 degrees.
  • the shutter 36 In this operating position, the shutter 36 is retracted only partially behind the cap 40.
  • the front wall 42 of the shutter 36 is partially exposed to the direction of circulation of the air perceived by the railway vehicle 12. It partially closes the inlet mouth 28 of the air in the device 13.
  • the front wall 42 of the shutter 36 completely closes the inlet mouth 28 of the air in the device 13.
  • the external environment subjects the railway vehicle 12 to a direction of air circulation.
  • the air circulating in the air vein exerts a force on the plate 52.
  • the force exerted by the air on the plate 52 rotates the shaft 38, causing the shutter 36 and the counterweights 58 in a circular rocking motion about the axis 38.
  • the device 13 then leaves the rest position defined by the angle ⁇ rest .
  • the angular displacement of the counterweight 58 generates a return moment of the shutter 36 on the shaft 38.
  • the shutter 36 finds an equilibrium position in which the forces exerted on the shaft 38 by the circulation of the air on the actuating flap 50, the restoring force of the counterweight 58 and the weights of the flap. actuation 50 and the shutter 36 are balanced.
  • the shutter 36 partially obstructs the intake port 28 of the air line 24, regulating the flow of air therein.
  • the bossed ventral wall 44 of the shutter 36 guides the air from the inlet port 30 to the current section of the pipe 24 by providing a laminar flow of air in the pipe 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Flow Control Members (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP17152039.8A 2016-01-19 2017-01-18 Lufteinnahmevorrichtung Active EP3196091B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1650414A FR3046751B1 (fr) 2016-01-19 2016-01-19 Dispositif de captation d'air

Publications (2)

Publication Number Publication Date
EP3196091A1 true EP3196091A1 (de) 2017-07-26
EP3196091B1 EP3196091B1 (de) 2020-05-06

Family

ID=55650538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17152039.8A Active EP3196091B1 (de) 2016-01-19 2017-01-18 Lufteinnahmevorrichtung

Country Status (3)

Country Link
EP (1) EP3196091B1 (de)
ES (1) ES2804905T3 (de)
FR (1) FR3046751B1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749833A (en) 1952-04-21 1956-06-12 Eugene Josef Marie Van De Pol Automatically controlled ventilation device
DE102013213664A1 (de) * 2013-07-12 2015-01-15 Siemens Aktiengesellschaft Fahrzeug

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749833A (en) 1952-04-21 1956-06-12 Eugene Josef Marie Van De Pol Automatically controlled ventilation device
DE102013213664A1 (de) * 2013-07-12 2015-01-15 Siemens Aktiengesellschaft Fahrzeug

Also Published As

Publication number Publication date
FR3046751A1 (fr) 2017-07-21
EP3196091B1 (de) 2020-05-06
ES2804905T3 (es) 2021-02-09
FR3046751B1 (fr) 2018-02-16

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