EP0653520A2 - Watersupply system in particular for buffet cars of passenger trains - Google Patents

Watersupply system in particular for buffet cars of passenger trains Download PDF

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Publication number
EP0653520A2
EP0653520A2 EP94117471A EP94117471A EP0653520A2 EP 0653520 A2 EP0653520 A2 EP 0653520A2 EP 94117471 A EP94117471 A EP 94117471A EP 94117471 A EP94117471 A EP 94117471A EP 0653520 A2 EP0653520 A2 EP 0653520A2
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EP
European Patent Office
Prior art keywords
pressure
water
pump
pressure line
supply system
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.)
Withdrawn
Application number
EP94117471A
Other languages
German (de)
French (fr)
Other versions
EP0653520A3 (en
Inventor
Klaus Heckemanns
Michael Krebs
Christoph Keil
Hans Günter Schuch
Heinrich Möller
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.)
Duewag AG
Original Assignee
Duewag AG
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 Duewag AG filed Critical Duewag AG
Publication of EP0653520A2 publication Critical patent/EP0653520A2/en
Publication of EP0653520A3 publication Critical patent/EP0653520A3/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/04—Domestic or like local pipe systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D35/00—Sanitation
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/04—Domestic or like local pipe systems
    • E03B7/045—Domestic or like local pipe systems diverting initially cold water in warm water supply

Definitions

  • the invention relates to a water supply system, in particular for catering wagons of passenger trains, consisting essentially of at least one water tank, a circulation circuit formed by pipes and / or hoses, which contains a circulation pump and a UV disinfection device, and one to the points of use - such as a tap, dishwasher - leading pressure line.
  • a water supply system with the aforementioned generic features belongs to the state of the art due to the obvious prior use of so-called bistro service cars from InterRegio passenger trains of the Deutsche Bundesbahn.
  • the non-self-priming circulation pump conveys the entire water content of the system through the UV disinfection device.
  • a second pressure booster pump which does not run continuously, taps the circulation circuit behind the UV disinfection device and generates pressurized water for feeding the consumption points.
  • the booster pump is controlled by a pressure switch, i. that is, it starts pumping as soon as the pressure in the pressure line drops below a certain value.
  • the invention has for its object to design a water supply system of the generic type so that the simplest possible structure can be realized with a smaller number of components.
  • a circulation pump designed as a self-priming centrifugal pump is used in addition to its circulating function as a pressure booster and feed pump for the pressure line.
  • one embodiment of the invention is that the water pressure within the pressure line can be adjusted by means of a throttle or a regulating valve, the throttle or the regulating valve being assigned to the circulation circuit.
  • the invention advantageously provides a water supply system which works with only a single centrifugal pump, air possibly flowing into this system being reliably displaced due to the self-priming pump.
  • a water tank 1 which can optionally be communicatively coupled to a further one or more water tanks, is connected to a filling pipe 7, which has a filler neck 7a accessible from the outside of the car 8.
  • the water tank 1 contains a heating insert 9 and a switch 10, which protects a self-priming centrifugal pump 3 with an electric motor from running dry.
  • a shut-off valve 11, a non-return valve 12, a UV disinfection device 4, a fixed or adjustable throttle 6 and a solenoid valve 13 are arranged.
  • the pipeline 2a with its hose pieces 2a ' is at the same time part of the pressure line 5, which branches off in front of the throttle 6 and leads to the consumption points of the catering vehicle.
  • the pressure line 5, which is also provided with a non-return valve 12, has a membrane pressure vessel 14, a pipe vent 15 and a pressure switch 16.
  • the centrifugal pump 3 which in this case works as a pure circulation pump, conveys the water continuously from the container 1 through the UV disinfection device 4 back into the container 1. This occurs in the circulation circuit 2 pressure P defined by throttle 6, to which a delivery quantity Q corresponding to the pump characteristic belongs.
  • the pressure P also prevailing in the pressure line 5 is available at the consumption points as the required water form.
  • An overpressure switch 17 which interacts with the pump 3 serves to protect the system.
  • the removal of a smaller amount of water is compensated for by the diaphragm pressure container 14 or taken from the circulation circuit 2 with a simultaneously falling pressure P and an increasing delivery rate Q in accordance with the pump characteristic. With greater water withdrawal, the pressure P drops to a certain lower line pressure. Then the solenoid valve 13 of the circulation circuit 2 controlled by the pressure switch 16 is closed, so that the centrifugal pump 3 can convey the entire amount of water into the pressure line 5 to the consumption points.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Warming Or Keeping Food Or Tableware Hot (AREA)
  • Cookers (AREA)
  • Physical Water Treatments (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A water-supply system, in particular for buffet cars of passenger trains, essentially comprises at least one water tank (1), a circulating circuit (2), which is formed by pipes and/or hoses and contains a circulating pump (3) and a UV sterilising unit (4), as well as a pressure line (5) which leads to the consumer points - such as water tap, dishwasher. In order, in the case of such a water-supply system, to realise as simple a construction as possible with a small number of components, a circulating pump (3), designed as a self-priming centrifugal pump, is also used, in addition to carrying out its circulating function, as a pressure-increasing and delivery pump for the pressure line (5).

Description

Die Erfindung betrifft eine Wasserversorgungsanlage, insbesondere für Gastronomiewagen von Reisezügen, im wesentlichen bestehend aus zumindest einem Wasserbehälter, einem durch Rohre und/oder Schläuche gebildeten Umwälzkreislauf, der eine Umwälzpumpe und ein UV-Entkeimungsgerät enthält, und einer zu den Verbrauchsstellen - wie Wasserhahn, Spülmaschine - führenden Druckleitung.The invention relates to a water supply system, in particular for catering wagons of passenger trains, consisting essentially of at least one water tank, a circulation circuit formed by pipes and / or hoses, which contains a circulation pump and a UV disinfection device, and one to the points of use - such as a tap, dishwasher - leading pressure line.

Eine Wasserversorgungsanlage mit den vorgenannten Gattungsmerkmalen gehört aufgrund offenkundiger Vorbenutzung bei sogenannten Bistro-Servicewagen von InterRegio-Reisezügen der Deutschen Bundesbahn zum Stand der Technik. Bei diesen Wagen fördert die nicht selbstansaugende Umwälzpumpe den gesamten Wasserinhalt der Anlage durch das UV-Entkeimungsgerät. Eine zweite nicht permanent laufende Druckerhöhungspumpe zapft den Umwälzkreislauf hinter dem UV-Entkeimungsgerät an und erzeugt Druckwasser zum Speisen der Verbrauchsstellen. Die Druckerhöhungspumpe ist über einen Druckschalter gesteuert, d. h., sie beginnt zu fördern, sobald der Druck in der Druckleitung unter einem bestimmten Wert fällt.A water supply system with the aforementioned generic features belongs to the state of the art due to the obvious prior use of so-called bistro service cars from InterRegio passenger trains of the Deutsche Bundesbahn. In these cars, the non-self-priming circulation pump conveys the entire water content of the system through the UV disinfection device. A second pressure booster pump, which does not run continuously, taps the circulation circuit behind the UV disinfection device and generates pressurized water for feeding the consumption points. The booster pump is controlled by a pressure switch, i. that is, it starts pumping as soon as the pressure in the pressure line drops below a certain value.

Der Erfindung liegt die Aufgabe zugrunde, eine Wasserversorgungsanlage der gattungsgemäßen Art so zu gestalten, daß ein möglichst einfacher Aufbau mit einer geringeren Anzahl von Komponenten realisierbar ist.The invention has for its object to design a water supply system of the generic type so that the simplest possible structure can be realized with a smaller number of components.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß eine als selbstansaugende Kreiselpumpe ausgebildete Umwälzpumpe neben ihrer umwälzenden Funktion als Druckerhöhungs- sowie Förderpumpe für die Druckleitung eingesetzt wird.This object is achieved in that a circulation pump designed as a self-priming centrifugal pump is used in addition to its circulating function as a pressure booster and feed pump for the pressure line.

Um die Verbrauchsstellen auf einfache Weise mit dem benötigten Wasservordruck speisen zu können, liegt eine Ausführungsform der Erfindung darin, daß der Wasservordruck innerhalb der Druckleitung mittels einer Drossel oder eines Regulierventils einstellbar ist, wobei die Drossel bzw. das Regulierventil dem Umwälzkreislauf zugeordnet ist.In order to be able to easily feed the consumption points with the required water pressure, one embodiment of the invention is that the water pressure within the pressure line can be adjusted by means of a throttle or a regulating valve, the throttle or the regulating valve being assigned to the circulation circuit.

Durch die Erfindung steht vorteilhaft eine Wasserversorgungsanlage zur Verfügung, die mit nur einer einzigen Kreiselpumpe arbeitet, wobei möglicherweise in diese Anlage eingeflossene Luft aufgrund der selbstansaugenden Pumpe sicher verdrängt wird.The invention advantageously provides a water supply system which works with only a single centrifugal pump, air possibly flowing into this system being reliably displaced due to the self-priming pump.

Ein Ausführungsbeispiel einer Wasserversorgungsanlage nach der Erfindung ist in der Zeichnung schematisch dargestellt und wird im folgenden näher beschrieben.An embodiment of a water supply system according to the invention is shown schematically in the drawing and is described in more detail below.

Ein Wasserbehälter 1, der ggf. mit einem weiteren oder mehreren Wasserbehältern kommunizierend gekoppelt sein kann, ist mit einem Füllrohr 7 verbunden, das einen von der Wagenaußenseite 8 her zugänglichen Füllstutzen 7a aufweist. Der Wasserbehälter 1 enthält einen Heizeinsatz 9 und einen Schalter 10, der eine selbstansaugende Kreiselpumpe 3 mit Elektromotor vor einem Trockenlaufen schützt.A water tank 1, which can optionally be communicatively coupled to a further one or more water tanks, is connected to a filling pipe 7, which has a filler neck 7a accessible from the outside of the car 8. The water tank 1 contains a heating insert 9 and a switch 10, which protects a self-priming centrifugal pump 3 with an electric motor from running dry.

Eine am Behälter 1 angeschlossene Rohrleitung 2a, die im Hinblick auf beengte Einbausituationen mit Schlauchstücken 2a' versehen ist, und eine hier gestrichelt gezeichnete Rohrleitung 2b bilden einen Umwälzkreislauf 2. Innerhalb dieses Kreislaufs 2 sind außer der Kreiselpumpe 3 ein Absperrhahn 11, eine Rückschlagklappe 12, ein UV-Entkeimungsgerät 4, eine feste oder einstellbare Drossel 6 sowie ein Magnetventil 13 angeordnet.A pipeline 2a connected to the container 1, which is provided with hose sections 2a 'in view of cramped installation situations, and a pipeline 2b shown here in broken lines form a circulation circuit 2. Within this circuit 2, in addition to the centrifugal pump 3, a shut-off valve 11, a non-return valve 12, a UV disinfection device 4, a fixed or adjustable throttle 6 and a solenoid valve 13 are arranged.

Die Rohrleitung 2a mit ihren Schlauchstücken 2a' ist gleichzeitig Bestandteil der Druckleitung 5, die vor der Drossel 6 abzweigt und zu den Verbrauchsstellen des Gastronomiewagens führt. Die ebenfalls mit einer Rückschlagklappe 12 versehene Druckleitung 5 hat einen Membrandruckbehälter 14, einen Rohrentlüfter 15 sowie einen Druckschalter 16.The pipeline 2a with its hose pieces 2a 'is at the same time part of the pressure line 5, which branches off in front of the throttle 6 and leads to the consumption points of the catering vehicle. The pressure line 5, which is also provided with a non-return valve 12, has a membrane pressure vessel 14, a pipe vent 15 and a pressure switch 16.

Solange an den Verbrauchsstellen kein oder nur sehr wenig Wasser entnommen wird, fördert die in diesem Fall als reine Umwälzpumpe arbeitende Kreiselpumpe 3 das Wasser kontinuierlich aus dem Behälter 1 durch das UV-Entkeimungsgerät 4 zurück in den Behälter 1. Dabei stellt sich im Umwälzkreislauf 2 ein durch die Drossel 6 definierter Druck P ein, dem eine der Pumpenkennlinie entsprechende Fördermenge Q zugehört. Der auch in der Druckleitung 5 herrschende Druck P steht an den Verbrauchsstellen als benötigter Wasservordruck zur Verfügung. Zur Absicherung der Anlage dient ein mit der Pumpe 3 zusammenwirkender Überdruckschalter 17.As long as no or only very little water is drawn from the points of consumption, the centrifugal pump 3, which in this case works as a pure circulation pump, conveys the water continuously from the container 1 through the UV disinfection device 4 back into the container 1. This occurs in the circulation circuit 2 pressure P defined by throttle 6, to which a delivery quantity Q corresponding to the pump characteristic belongs. The pressure P also prevailing in the pressure line 5 is available at the consumption points as the required water form. An overpressure switch 17 which interacts with the pump 3 serves to protect the system.

Die Entnahme einer geringeren Wassermenge wird durch den Membrandruckbehälter 14 ausgeglichen bzw. dem Umwälzkreislauf 2 entnommen bei gleichzeitig sinkendem Druck P und ansteigender Fördermenge Q entsprechend der Pumpenkennlinie. Bei größerer Wasserentnahme sinkt der Druck P auf einen bestimmten unteren Leitungsdruck ab. Dann wird das über den Druckschalter 16 gesteuerte Magnetventil 13 des Umwälzkreislaufs 2 geschlossen, so daß die Kreiselpumpe 3 die gesamte Wassermenge in die Druckleitung 5 zu den Verbrauchsstellen fördern kann.The removal of a smaller amount of water is compensated for by the diaphragm pressure container 14 or taken from the circulation circuit 2 with a simultaneously falling pressure P and an increasing delivery rate Q in accordance with the pump characteristic. With greater water withdrawal, the pressure P drops to a certain lower line pressure. Then the solenoid valve 13 of the circulation circuit 2 controlled by the pressure switch 16 is closed, so that the centrifugal pump 3 can convey the entire amount of water into the pressure line 5 to the consumption points.

Liste der BezugszeichenList of reference numbers

11
WasserbehälterWater tank
22nd
UmwälzkreislaufCirculation circuit
2a2a
RohrleitungPipeline
2a'2a '
SchlauchstückHose piece
33rd
UmwälzpumpeCirculation pump
44th
UV-EntkeimungsgerätUV disinfection device
55
DruckleitungPressure line
66
Drosselthrottle
77
FüllrohrFilling pipe
7a7a
FüllstutzenFiller neck
88th
WagenaußenseiteOutside of the car
99
HeizeinsatzHeating insert
1010th
Schalterswitch
1111
Absperrhahnstopcock
1212th
RückschlagklappeCheck valve
1313
Magnetventilmagnetic valve
1414
MembrandruckbehälterMembrane pressure vessel
1515
RohrentlüfterPipe breather
1616
DruckschalterPressure switch
1717th
ÜberdruckschalterPressure switch

Claims (2)

Wasserversorgungsanlage, insbesondere für Gastronomiewagen von Reisezügen, im wesentlichen bestehend aus zumindest einem Wasserbehälter (1), einem durch Rohre und/oder Schläuche gebildeten Umwälzkreislauf (2), der eine Umwälzpumpe (3) und ein UV-Entkeimungsgerät (4) enthält, und einer zu den Verbrauchsstellen - wie Wasserhahn, Spülmaschine - führenden Druckleitung (5), dadurch gekennzeichnet, daß eine als selbstansaugende Kreiselpumpe ausgebildete Umwälzpumpe (3) neben ihrer umwälzenden Funktion als Druckerhöhungssowie Förderpumpe für die Druckleitung (5) eingesetzt wird.Water supply system, in particular for catering wagons for passenger trains, essentially consisting of at least one water tank (1), a circulation circuit (2) formed by pipes and / or hoses, which contains a circulation pump (3) and a UV disinfection device (4), and one to the consumption points - such as water tap, dishwasher - leading pressure line (5), characterized in that a circulation pump (3) designed as a self-priming centrifugal pump is used in addition to its circulating function as a pressure booster and feed pump for the pressure line (5). Wasserversorgungsanlage nach Anspruch 1, dadurch gekennzeichnet, daß der Wasservordruck innerhalb der Druckleitung (5) mittels einer Drossel (6) oder eines Regulierventils einstellbar ist, wobei die Drossel (6) bzw. das Regulierventil dem Umwälzkreislauf (2) zugeordnet ist.Water supply system according to claim 1, characterized in that the water supply pressure within the pressure line (5) can be adjusted by means of a throttle (6) or a regulating valve, the throttle (6) or the regulating valve being assigned to the circulation circuit (2).
EP94117471A 1993-11-15 1994-11-05 Watersupply system in particular for buffet cars of passenger trains. Withdrawn EP0653520A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9317443U 1993-11-15
DE9317443U DE9317443U1 (en) 1993-11-15 1993-11-15 Water supply system, in particular for catering coaches on passenger trains

Publications (2)

Publication Number Publication Date
EP0653520A2 true EP0653520A2 (en) 1995-05-17
EP0653520A3 EP0653520A3 (en) 1996-10-16

Family

ID=6900710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94117471A Withdrawn EP0653520A3 (en) 1993-11-15 1994-11-05 Watersupply system in particular for buffet cars of passenger trains.

Country Status (2)

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EP (1) EP0653520A3 (en)
DE (1) DE9317443U1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806526A2 (en) * 1996-05-10 1997-11-12 Karl F. Dr. Massholder Device for the delivery of water
WO2000019024A1 (en) * 1998-09-29 2000-04-06 International Water-Guard Industries Inc. Method of water distribution and apparatus therefor
US7118677B2 (en) 2002-07-03 2006-10-10 Airbus Deutschland Gmbh Method and apparatus for processing and re-using of gray water for flushing toilets
US7175760B2 (en) 2004-07-07 2007-02-13 Innowave, Inc. Water dispensing apparatus with water recirculation line
CN103612637A (en) * 2013-10-28 2014-03-05 山东华腾环保科技有限公司 Train water supply apparatus and control method thereof
CN109291864A (en) * 2018-11-05 2019-02-01 青岛亚通达铁路设备有限公司 Buck dirt collecting system, control method and the vehicles for the vehicles
RU2719044C1 (en) * 2019-09-17 2020-04-16 Общество С Ограниченной Ответственностью "Литтранссервис" System for water supply of railroad passenger cars with drinking water

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090020172A1 (en) * 2007-07-20 2009-01-22 Walker Robert E Method and Apparatus for Water Distribution

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844687A (en) * 1987-04-16 1989-07-04 Ernst Korthaus Selfpriming centrifugal pump
DE4008458A1 (en) * 1990-03-16 1991-09-19 Benckiser Wassertechnik Joh A Water treatment for tapping off purified water - where filtered precleaned water passes through reverse-osmosis and UV sterilising units to storage then is tapped off via UV steriliser
DE4227516A1 (en) * 1991-09-30 1993-04-08 Airbus Gmbh DEVICE FOR WATER SUPPLY

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844687A (en) * 1987-04-16 1989-07-04 Ernst Korthaus Selfpriming centrifugal pump
DE4008458A1 (en) * 1990-03-16 1991-09-19 Benckiser Wassertechnik Joh A Water treatment for tapping off purified water - where filtered precleaned water passes through reverse-osmosis and UV sterilising units to storage then is tapped off via UV steriliser
DE4227516A1 (en) * 1991-09-30 1993-04-08 Airbus Gmbh DEVICE FOR WATER SUPPLY

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806526A2 (en) * 1996-05-10 1997-11-12 Karl F. Dr. Massholder Device for the delivery of water
EP0806526A3 (en) * 1996-05-10 1998-08-19 Karl F. Dr. Massholder Device for the delivery of water
WO2000019024A1 (en) * 1998-09-29 2000-04-06 International Water-Guard Industries Inc. Method of water distribution and apparatus therefor
JP2002525466A (en) * 1998-09-29 2002-08-13 インターナショナル・ウォーター−ガード・インダストリーズ・インコーポレイテッド Water distribution method and water distribution device
US6463956B2 (en) 1998-09-29 2002-10-15 International Water-Guard Industries Inc. Method of water distribution and apparatus therefor
US7118677B2 (en) 2002-07-03 2006-10-10 Airbus Deutschland Gmbh Method and apparatus for processing and re-using of gray water for flushing toilets
US7175760B2 (en) 2004-07-07 2007-02-13 Innowave, Inc. Water dispensing apparatus with water recirculation line
CN103612637A (en) * 2013-10-28 2014-03-05 山东华腾环保科技有限公司 Train water supply apparatus and control method thereof
CN103612637B (en) * 2013-10-28 2016-03-16 山东华腾环保科技有限公司 A kind of train water service and control method thereof
CN109291864A (en) * 2018-11-05 2019-02-01 青岛亚通达铁路设备有限公司 Buck dirt collecting system, control method and the vehicles for the vehicles
RU2719044C1 (en) * 2019-09-17 2020-04-16 Общество С Ограниченной Ответственностью "Литтранссервис" System for water supply of railroad passenger cars with drinking water

Also Published As

Publication number Publication date
EP0653520A3 (en) 1996-10-16
DE9317443U1 (en) 1994-01-13

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