EP0337377A1 - Air extraction and pressurizing device for a railway vehicle - Google Patents

Air extraction and pressurizing device for a railway vehicle Download PDF

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Publication number
EP0337377A1
EP0337377A1 EP89106372A EP89106372A EP0337377A1 EP 0337377 A1 EP0337377 A1 EP 0337377A1 EP 89106372 A EP89106372 A EP 89106372A EP 89106372 A EP89106372 A EP 89106372A EP 0337377 A1 EP0337377 A1 EP 0337377A1
Authority
EP
European Patent Office
Prior art keywords
air
air extraction
railway vehicle
atmosphere
directions
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
EP89106372A
Other languages
German (de)
French (fr)
Other versions
EP0337377B1 (en
Inventor
Jean-Claude Dumas
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 Holdings SA
Original Assignee
Alstom SA
GEC Alsthom SA
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 SA, GEC Alsthom SA filed Critical Alstom SA
Priority to AT89106372T priority Critical patent/ATE71892T1/en
Publication of EP0337377A1 publication Critical patent/EP0337377A1/en
Application granted granted Critical
Publication of EP0337377B1 publication Critical patent/EP0337377B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B61D27/0009—Means for controlling or equalizing air pressure shocks in trains, e.g. when passing or crossing in tunnels

Definitions

  • the present invention relates to an air extraction device for conditioning the atmosphere of a railway vehicle and temporary pressurization (or overpressure) of this atmosphere.
  • the object of the present invention is to provide, for such air conditioning installations, an air extraction and overpressure device which does not include additional fans which will only operate for relatively short times, or oversized fans, and therefore be less expensive.
  • the device according to the invention is characterized in that it comprises at least one axial fan whose blades have symmetrical leading edge and trailing edge profiles, and allowing its rotation in both directions.
  • Such fans are known in themselves, for example from the document FR-A-973372.
  • this motor is provided with rapid braking means and rapid start of its rotation.
  • This motor is advantageously variable speed.
  • the axial fan 1 driven by the electric motor with variable speed 2 draws the air into the enclosure 3.
  • the air is drawn in as shown by the various arrows a and b in solid lines and passes into two parallel circuits via grids 4, 5 and ducts 6, 7; he is collected in a single duct 8 connected to the shell 9 of the fan. After passing through the fan, it is discharged outside.
  • FIG. 2 shows on a larger scale the assembly constituted by the axial fan 1 fixed on the shaft of its electric drive motor 2, inside the ferrule 9.
  • Seen from the motor side (direction of arrow A): - for extracting air, the fan rotates in the opposite direction to that of clockwise; the blades 10, one of which is shown in section by a plane perpendicular to the plane of the figure, allow the fan to draw the air in the direction of the arrows a and b towards the outside; - for pressurization, the fan turns in the opposite direction, that is to say in the same direction as that of the needles of a watch; the blades 10 allow the fan to discharge the air in the direction of the arrows in broken lines r and s towards the interior of the car.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)
  • Vehicle Body Suspensions (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Stored Programmes (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

Air-extraction device for conditioning the atmosphere of a railway vehicle and for temporarily pressurising this atmosphere. It comprises at least one axial fan (1), the blades (10) of which have symmetrical leading-edge and trailing-edge profiles, and enabling it to rotate in both directions, and a drive motor (2) capable of rotating in both directions. <IMAGE>

Description

La présente invention concerne un dispositif d'extraction d'air pour conditionnement de l'atmosphère d'un véhicule ferroviaire et de pressurisation (ou mise en surpression) temporaire de cette atmosphère.The present invention relates to an air extraction device for conditioning the atmosphere of a railway vehicle and temporary pressurization (or overpressure) of this atmosphere.

Il est devenu de plus en plus fréquent de munir les nouvelles voitures ferroviaires de transport et motrices d'un équipement de conditionnement d'air. Ce perfectionnement est en grande partie motivé par l'augmentation continue de la vitesse dans les réseaux qui interdit progressivement la possibilité d'ouverture des baies latérales.It has become more and more common to equip new rail cars and motor cars with air conditioning equipment. This improvement is largely motivated by the continuous increase in speed in the networks, which progressively prohibits the possibility of opening the side bays.

Il a par ailleurs été constaté sur les lignes à très grande vitesse, dépassant 200 Km/h, que le franchissement d'un tunnel par un train a très grande vitesse et surtout le croisement de deux trains dans un tunnel entraînaient de brutales fluctuations de pression qui pouvaient incommoder fortement les voyageurs.It has also been observed on very high speed lines, exceeding 200 km / h, that the crossing of a tunnel by a very high speed train and especially the crossing of two trains in a tunnel resulted in sudden pressure fluctuations which could seriously inconvenience travelers.

Il est généralement reconnu que pour diminuer ce phénomène les voitures doivent être construites pour être le plus étanches possible, ce qui n'est pas toujours compatible avec la conception d'un voiture de chemin de fer. Il est de plus en plus admis qu'avant le franchissement d'un tunnel les compartiments voyageurs et cabines de conduites doivent être progressivement mis en légère surpression par augmentation de débit de ventilation et occultation de certaines ouvertures par des volets mobiles.It is generally recognized that to reduce this phenomenon cars must be built to be as watertight as possible, which is not always compatible with the design of a railway car. It is more and more accepted that before the crossing of a tunnel the passenger compartments and cabins of conduits must be progressively put in slight overpressure by increase of ventilation flow and occlusion of certain openings by movable shutters.

On a déjà résolu le problème en adoptant l'une des solutions suivantes :
- adjonction sur le circuit d'air neuf et d'air recyclé de ventilateurs supplémentaires qui entrent en fonctionnement peu avant l'entrée dans le tunnel.
- augmentation des capacités des ventilateurs d'admission d'air neuf et d'air recyclé ; dans ce cas ces ventilateurs peuvent fonctionner sous deux régimes différents, en régime moyen pour la circulation normale et en régime poussé avant franchissement d'un tunnel.We have already solved the problem by adopting one of the following solutions:
- addition of additional fans to the fresh air and recycled air circuit, which come into operation shortly before entering the tunnel.
- increased capacity of the fresh air and recycled air intake fans; in this case, these fans can operate under two different speeds, in medium speed for normal circulation and in high speed before crossing of a tunnel.

L'adjonction de ventilateurs supplémentaires aussi bien que l'emploi de ventilateurs de capacités plus importantes entraînent cependant un accroîssement du coût de l'installation de climatisation.The addition of additional fans as well as the use of fans with larger capacities, however, increase the cost of the air conditioning installation.

La présente invention a pour but de procurer pour de telles installations de climatisation un dispositif d'extraction d'air et de mise en surpression qui ne comporte pas de ventilateurs supplé­mentaires appelés à ne fonctionner que pendant des temps relativement brefs, ni de ventilateurs surdimensionnés, et soit donc moins coûteux.The object of the present invention is to provide, for such air conditioning installations, an air extraction and overpressure device which does not include additional fans which will only operate for relatively short times, or oversized fans, and therefore be less expensive.

Le dispositif selon l'invention est caractérisé en ce qu'il comprend au moins un ventilateur axial dont les pales ont des profils de bord d'attaque et de bord de fuite symétriques, et permettant sa rotation dans les deux sens.The device according to the invention is characterized in that it comprises at least one axial fan whose blades have symmetrical leading edge and trailing edge profiles, and allowing its rotation in both directions.

De tels ventilateurs sont connus en eux-mêmes, par exemple par le document FR-A-973372.Such fans are known in themselves, for example from the document FR-A-973372.

De préférence, ce moteur est muni de moyens de freinage rapide et de démarrage rapide de sa rotation.Preferably, this motor is provided with rapid braking means and rapid start of its rotation.

Ce moteur est avantageusement à vitesse variable.This motor is advantageously variable speed.

De ce fait on peut obtenir :
- d'une part pour l'un des sens de rotation et une vitesse angulaire moyenne l'aspiration d'un débit modéré d'air hors du véhicule,
- d'autre part en inversant le sens de rotation par rapport au sens correspondant à l'extraction d'air, et si nécessaire en augmentant la vitesse de rotation du moteur d'entraînement, le refoulement d'un débit important d'air de pressurisation.Therefore we can obtain:
on the one hand for one of the directions of rotation and an average angular speed the suction of a moderate flow of air out of the vehicle,
- on the other hand by reversing the direction of rotation relative to the direction corresponding to the air extraction, and if necessary by increasing the speed of rotation of the drive motor, the discharge of a large flow of air from pressurization.

Il est décrit ci-après, à titre d'exemple et en référence aux figures schématiques du dessin annexé, un dispositif d'extraction d'air et de mise en surpression temporaire d'une voiture de chemin de fer à air conditionné.

  • La figure 1 représente l'ensemble du dispositif.
  • La figure 2 représente un ventilateur de ce dispositif.
It is described below, by way of example and with reference to the schematic figures of the accompanying drawing, an air extraction device and a temporary overpressure of a railway car with air conditioning.
  • Figure 1 shows the entire device.
  • Figure 2 shows a fan of this device.

Dans la figure 1, le ventilateur axial 1 entraîné par le moteur électrique à vitesse de rotation variable 2 aspire l'air dans l'enceinte 3. L'air est aspiré comme représenté par les différentes flèches a et b en traits pleins et passe dans deux circuits parallèles par l'intermédiaire de grilles 4, 5 et de gaines 6, 7 ; il est collecté dans un conduit unique 8 relié à la virole 9 du ventilateur. Après passage dans le ventilateur, il est rejeté à l'extérieur.In FIG. 1, the axial fan 1 driven by the electric motor with variable speed 2 draws the air into the enclosure 3. The air is drawn in as shown by the various arrows a and b in solid lines and passes into two parallel circuits via grids 4, 5 and ducts 6, 7; he is collected in a single duct 8 connected to the shell 9 of the fan. After passing through the fan, it is discharged outside.

Lorsque l'on veut assurer une mise en surpression temporaire à l'intérieur de la voiture, on arrête le ventilateur, si besoin en le freinant pour augmenter sa décélération, et on le fait redémarrer en sens inverse. Si nécessaire on augmente sa vitesse de rotation pour qu'en valeur absolue elle atteigne une valeur supérieure à celle utilisée pour l'extraction d'air. Le ventilateur refoule alors de l'air extérieur à l'intérieur de la voiture, suivant les flèches en traits interrompus r et s dans le conduit 8, les gaines 6 et 7 et l'intérieur 3 de la voiture.When we want to ensure a temporary overpressure inside the car, we stop the fan, if necessary by braking it to increase its deceleration, and we start it in reverse. If necessary, increase its speed so that in absolute value it reaches a value higher than that used for air extraction. The fan then expels outside air inside the car, following the arrows in broken lines r and s in the duct 8, the ducts 6 and 7 and the interior 3 of the car.

La figure 2 représente à plus grande échelle l'ensemble constitué par le ventilateur axial 1 fixé sur l'arbre de son moteur électrique d'entraînement 2, à l'intérieur de la virole 9.FIG. 2 shows on a larger scale the assembly constituted by the axial fan 1 fixed on the shaft of its electric drive motor 2, inside the ferrule 9.

Vu du côté moteur (sens de la flèche A) :
- pour l'extraction d'air, le ventilateur tourne dans le sens opposé à celui des aiguilles d'une montre ; les pales 10, dont une est représenté en coupe par un plan perpendiculaire au plan de la figure, permettent au ventilateur d'aspirer l'air dans le sens des flèches a et b vers l'extérieur ;
- pour la pressurisation, le ventilateur tourne en sens inverse, c'est-à-dire dans le même sens que celui des aiguilles d'une montre ; les pales 10 permettent au ventilateur de refouler l'air dans le sens des flèches en traits interrompus r et s vers l'intérieur de la voiture.Seen from the motor side (direction of arrow A):
- for extracting air, the fan rotates in the opposite direction to that of clockwise; the blades 10, one of which is shown in section by a plane perpendicular to the plane of the figure, allow the fan to draw the air in the direction of the arrows a and b towards the outside;
- for pressurization, the fan turns in the opposite direction, that is to say in the same direction as that of the needles of a watch; the blades 10 allow the fan to discharge the air in the direction of the arrows in broken lines r and s towards the interior of the car.

Claims (3)

1/ Dispositif d'extraction d'air pour conditionnement de l'atmosphère d'un véhicule ferroviaire et de mise en surpression temporaire de cette atmosphère,
caractérisé en ce qu'il comprend au moins un ventilateur axial (1) dont les pales ont des profils de bord d'attaque et de bord de fuite symétriques, et permettant sa rotation dans les deux sens, et un moteur d'entraînement (2) susceptible de tourner dans les deux sens.1 / Air extraction device for conditioning the atmosphere of a rail vehicle and temporarily overpressuring this atmosphere,
characterized in that it comprises at least one axial fan (1), the blades of which have symmetrical leading edge and trailing edge profiles, and allowing it to rotate in both directions, and a drive motor (2 ) likely to turn in both directions. 2/ Dispositif selon la revendication 1, caractérisé en ce que son moteur (2) est muni de moyens de freinage rapide et de démarrage rapide de sa rotation.2 / Device according to claim 1, characterized in that its motor (2) is provided with rapid braking means and rapid start of its rotation. 3/ Dispositif selon les revendications 1 ou 2, caractérisé en ce que son moteur (2) est à vitesse variable.3 / Device according to claims 1 or 2, characterized in that its motor (2) is variable speed.
EP89106372A 1988-04-12 1989-04-11 Air extraction and pressurizing device for a railway vehicle Expired - Lifetime EP0337377B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89106372T ATE71892T1 (en) 1988-04-12 1989-04-11 AIR SUCTION AND PRESSURE DEVICE FOR A RAILWAY VEHICLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8804828A FR2629778B1 (en) 1988-04-12 1988-04-12 DEVICE FOR EXTRACTING AIR AND PRESSURIZING A RAIL VEHICLE
FR8804828 1988-04-12

Publications (2)

Publication Number Publication Date
EP0337377A1 true EP0337377A1 (en) 1989-10-18
EP0337377B1 EP0337377B1 (en) 1992-01-22

Family

ID=9365233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106372A Expired - Lifetime EP0337377B1 (en) 1988-04-12 1989-04-11 Air extraction and pressurizing device for a railway vehicle

Country Status (8)

Country Link
EP (1) EP0337377B1 (en)
JP (1) JPH01306363A (en)
KR (1) KR890015920A (en)
AT (1) ATE71892T1 (en)
BR (1) BR8901720A (en)
DE (1) DE68900742D1 (en)
ES (1) ES2029541T3 (en)
FR (1) FR2629778B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1547897A1 (en) * 2003-12-25 2005-06-29 Hitachi, Ltd. Railway vehicle with means for reducing the pressure wave when entering a tunnel, and corresponding method.
HRP20070298B1 (en) * 2007-07-06 2013-06-30 Blago Brkić Construction for protecting against ice occuring on axial fan suction intake

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112498388B (en) * 2020-12-15 2022-08-12 中车株洲电力机车有限公司 Rail transit vehicle and control method and control system thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2027844A (en) * 1934-07-03 1936-01-14 Gen Electric Fan
FR973372A (en) * 1948-10-08 1951-02-09 Neu Sa Reversible blade of helical fans
FR1070951A (en) * 1952-04-05 1954-08-20 Claas Maschf Gmbh Geb Process for cleaning radiators

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2027844A (en) * 1934-07-03 1936-01-14 Gen Electric Fan
FR973372A (en) * 1948-10-08 1951-02-09 Neu Sa Reversible blade of helical fans
FR1070951A (en) * 1952-04-05 1954-08-20 Claas Maschf Gmbh Geb Process for cleaning radiators

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1547897A1 (en) * 2003-12-25 2005-06-29 Hitachi, Ltd. Railway vehicle with means for reducing the pressure wave when entering a tunnel, and corresponding method.
US7021220B2 (en) 2003-12-25 2006-04-04 Hitachi, Ltd. Railway vehicle and method for operating vehicle
HRP20070298B1 (en) * 2007-07-06 2013-06-30 Blago Brkić Construction for protecting against ice occuring on axial fan suction intake

Also Published As

Publication number Publication date
FR2629778A1 (en) 1989-10-13
ES2029541T3 (en) 1992-08-16
JPH01306363A (en) 1989-12-11
FR2629778B1 (en) 1991-01-11
DE68900742D1 (en) 1992-03-05
KR890015920A (en) 1989-11-27
BR8901720A (en) 1989-11-21
EP0337377B1 (en) 1992-01-22
ATE71892T1 (en) 1992-02-15

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