EP1041595B2 - Ensemble de pompe centrifuge - Google Patents

Ensemble de pompe centrifuge Download PDF

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Publication number
EP1041595B2
EP1041595B2 EP00106498A EP00106498A EP1041595B2 EP 1041595 B2 EP1041595 B2 EP 1041595B2 EP 00106498 A EP00106498 A EP 00106498A EP 00106498 A EP00106498 A EP 00106498A EP 1041595 B2 EP1041595 B2 EP 1041595B2
Authority
EP
European Patent Office
Prior art keywords
housing
lever
centrifugal pump
pump unit
unit according
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.)
Expired - Lifetime
Application number
EP00106498A
Other languages
German (de)
English (en)
Other versions
EP1041595A2 (fr
EP1041595A3 (fr
EP1041595B1 (fr
Inventor
Niels Due Jensen
Carsten Nörgaard
Jörgen Schmidt
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.)
Grundfos AS
Original Assignee
Grundfos AS
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
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Application filed by Grundfos AS filed Critical Grundfos AS
Publication of EP1041595A2 publication Critical patent/EP1041595A2/fr
Publication of EP1041595A3 publication Critical patent/EP1041595A3/fr
Publication of EP1041595B1 publication Critical patent/EP1041595B1/fr
Application granted granted Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/40—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by devices allowing continual flow of fluid, e.g. vane
    • H01H35/405—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by devices allowing continual flow of fluid, e.g. vane the switch being of the reed switch type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • F04D15/0227—Lack of liquid level being detected using a flow transducer

Definitions

  • the invention relates to a centrifugal pump unit of the type described below.
  • Centrifugal pump units of this type are nowadays used to increase the pressure, as so-called booster pumps.
  • the central water supply does not always have a sufficiently high operating pressure
  • water can be removed if the delivery pressure drops in the central supply line or the promotion fails.
  • the static pressure is usually very low due to the difference in height between the reservoir and the removal point, it is necessary to use such booster pumps, in particular when electric or gas-operated instantaneous water heaters or comparable devices requiring a minimum water flow rate are used.
  • Booster pumps are typically used for pressure increases of 0.6 to 0.8 bar at a flow rate of 0.5 to 1 m 3 / h.
  • these pumps are equipped with a flow switch, which controls the electric motor of the centrifugal pump assembly. Whenever a dispensing valve is opened at a sampling point and water begins to flow due to the low static pressure present, this flow monitor is energized, which then turns on the motor of the centrifugal pump assembly to produce in this way the desired pressure increase.
  • centrifugal pump units are state of the art.
  • a known such aggregates is specifically designed for this purpose and has a terminal box which engages over the motor housing to the pump housing and there has an electromagnetic switching device which is operatively connected to a arranged in this area in the flow path two-armed, pivotally mounted lever.
  • This lever projects with one arm in the flow path and carries on the other arm a magnet which controls the switching device in the form of a reed contact. Since the aforementioned components are structurally adapted to the pump type, they are also usable only for this type of pump, which is disadvantageous in particular with regard to terminal box.
  • the present invention seeks to design a generic centrifugal pump assembly constructive so that largely standardized components from mass production can be used to reduce manufacturing costs.
  • the basic idea of the invention is to spatially and physically separate the terminal box from the flow monitor in order to be able to use a terminal box in this manner, as it is also used for other centrifugal pump units of this size, in particular heating circulation pumps.
  • the centrifugal pump unit can be used by the cartridge-like incorporated into the pump housing monitor housing either with or without flow switch by placing a corresponding sealing cap.
  • the pump unit is thus not only structurally simplified, but also versatile in terms of the purpose.
  • the shift lever which projects with its one arm into the flow path and the other arm carries a magnet.
  • the magnet is thus within the guard housing, while the switching device remains arranged in the terminal box.
  • Terminal box and guard housing are therefore only magnetically connected to each other operatively, but otherwise completely separated spatially and physically. It is understood that the terminal box and monitor housings are adjacent to each other to ensure the magnetic operative connection.
  • the terminal box can be mounted in a known manner on the motor housing, with only the necessary electrical security seals are to be provided, but seals against the medium completely eliminated.
  • the monitor housing Since the monitor housing is hermetically sealed to the outside, ie to where it is accessible from the outside after installation in the pump housing, a seal with respect to the pump housing is sufficient to seal against the flow towards the outside (towards the environment) to ensure.
  • a simple ring seal is sufficient if the projecting into the pump housing part of the guard housing is formed substantially cylindrical.
  • Such a cylindrical shape with corresponding openings in the region of the flow channel is not only advantageous in terms of the aforementioned seal against the pump housing, but also facilitates assembly, as by slight rotation any tilting can be canceled during insertion.
  • the monitor housing is designed so that the housing part lying outside of the pump housing is formed completely closed. In this way, no sealing arrangements within the guard housing are required, the tightness of the arrangement is reliably guaranteed.
  • the pivotally mounted within the guard housing lever is formed by a one-piece injection molding, which not only the two lever arms, so the arm projecting into the flow path and the arm carrying the magnet, but also has a pivot axis with which the lever within the Housing is stored.
  • this paddle-like In order to ensure that the projecting into the flow path lever arm is deflected at very low flow, it is expedient to form this paddle-like, so that it, when it is transverse to the flow, forms a large flow resistance and in the direction of flow as small as possible.
  • the outer contour of the paddle-like lever arm should substantially correspond to the flow channel cross section in order to allow the most sensitive possible reaction.
  • the solution according to the invention allows the lever to be arranged with two lever arms in the conveying fluid - it is therefore not necessary to provide a seal between the two lever arms within the guard housing - but it is expedient for the lever arm, which carries the magnet, as well as the pivot axis To protect an elastic sleeve against the guard housing. In this way it is prevented that contaminants or deposits penetrate in this area of the guard housing or that form flows within this housing part.
  • the lever arrangement is designed so that the force acting on the lever flow force decreases with increasing deflection of the paddle-like lever from the flow path.
  • the lever reset is preferably carried out by means of magnetic force, for which purpose inside or outside of the guard housing, a further magnet (auxiliary magnet) may be provided, which acts either disgusting or attractive depending on the arrangement.
  • auxiliary magnet is polarized with respect to the magnets arranged on the lever arm so that it acts repulsive on this. This arrangement is therefore particularly favorable, since it allows to make the pump housing either made of plastic or of a ferromagnetic material, without the risk that the lever due to the magnetic force holds close to the pump housing wall.
  • terminal box and monitor housing terminal boxes can be used, as they are cost-effectively built for heating circulation pumps already in large quantities, with only the arranged inside the terminal box board is to be modified accordingly to receive the reed relay at a suitable location.
  • Such known from Schuungsum maybelzpumpen terminal boxes usually have a three-stage switch, which is used in Walkerungsumsammlunglzpumpen for speed adjustment. It is therefore of particular advantage to use this already existing switch for the pump unit according to the invention, which is effected in that this tap changer with the switching functions ON, OFF and flow control is applied. Thus, further series parts can be used for the special purpose.
  • centrifugal pump unit has a motor housing 1, which accommodates an electric motor, with a stator 2 and a rotor 3, which is separated in a conventional manner via a split tube from the stator.
  • the rotor 3 has a shaft 4, which carries a gyro 5, which is arranged within a pump housing 6.
  • the pump housing 6 is screwed to the motor housing 1 and has an intake 7, the channel opens in the suction port of the impeller 5.
  • radially adjoining the centrifugal wheel 5 is a channel 9 leading to a pressure connection 8.
  • a flow switch 10 is arranged in the region of this channel 9.
  • a terminal box 11 is arranged, in which the electrical wiring between the stationary line network and the engine takes place and in which the entire further electronics of the unit is arranged beyond.
  • a capacitor 12 a circuit board 13 and arranged between the circuit board 13 and the housing wall reed relay 14.
  • the terminal box 11 is closed by a removable cover 15.
  • the flow monitor 10 has a lever 16, which is designed as an injection molded part, a pivot axis 17, a protruding into the channel 9 lever arm 18 and a lever arm 19 projecting to the other side.
  • the lever arm 18 is paddle-shaped, as in Fig. 3 is clearly visible. Its outer contour is adapted to the channel cross-section in this area, so that it almost completely closes the channel 9 in the rest position.
  • the arranged on the other side of the pivot axis 17 lever arm 19 is formed as a holder for a magnet 20 attached thereto.
  • the magnet 20 has a cylindrical shape and a north-south polarization along the cylinder axis, so that one end face of the north pole and the other end face forms the south pole, as well as in the FIGS. 7 and 8 illustrate drawn magnetic field lines.
  • the magnet 20 cooperates with the arranged in the terminal box 11 reed relay 14, so that depending on the position of the lever 16 and the magnet 20, the reed relay 14 is located in one or the other switching position.
  • the two switch positions are in the FIGS. 7 and 8 shown.
  • the circuit is carried out such that in the rest position ( Fig. 7 ), that is, when there is no flow within the channel 9, the engine is turned off and in the other deflected position ( Fig. 8 ) the engine is switched on.
  • the lever 16 is mounted within a guard housing 21, which is formed in three parts. It has a cartridge-like insertion part 22, which has a substantially cylindrical outer contour and is formed from two plastic injection-molded parts 22a and 22b.
  • the insertion part has a channel 9 continuing opening transverse to the insertion direction.
  • the insertion part halves 22a and 22b are joined by means of dowels 23 with the inclusion of the lever 16. In installation position, the halves are held by the corresponding cylindrical cross-shaped passage to the channel 9 in the pump housing 6.
  • an outer housing 24 consisting of plastic injection molding overlaps a cylindrical shoulder of the insertion part 22.
  • guard housing 21 has conveying fluid contact not only in the region of the paddle-like lever arm 18, but also the interior of the outer housing 24 can be filled with fluid, only one annular seal 25 is required which the outer housing 24 is sealed relative to the transverse bore in the pump housing 6.
  • an elastic protective sleeve 26 is provided which sits on the one hand on the lever 16 and on the other hand is held within the insertion part 22.
  • the protective sleeve is first pushed so far over the lever 16 until it reaches its intended position approximately in the middle (see Fig. 3 ) occupies. From this position, it can not slip due to a projection 27 on the lever.
  • the collar edge is then fixed in the insertion part 22, in which case the entire insertion part is inserted with the lever located thereon in the outer housing 24, and then received in the transverse bore of the pump housing 6 and screw-fastened by means provided on the outer housing 24 holes 28.
  • an outwardly open recess 29 is formed, which is accessible prior to assembly and at the bottom of a further magnet 30 (auxiliary magnet) is fixed.
  • the auxiliary magnet also has a cylindrical shape and a north-south polarization along its cylinder axis. In this case, the arrangement is selected to the magnet 20 so that the same face opposite poles, so that the magnet 20 is repelled by the magnet 30.
  • the outer housing 24 has a channel 9 open towards the cavity which receives the lever arm 19 and adjacent to the externally accessible recess 29 for the magnet and is otherwise adapted in shape to the outer contour of the terminal box.
  • the recess 29 is accessible only when the terminal box 12 is removed or the pump housing 6 is removed with the monitor housing 21 from the motor housing 1.
  • the distance between terminal box 11 and monitor housing 21, in particular outer housing 24 is chosen so that on the one hand a free space is formed, on the other hand, however, the magnet 20, the reed relay 14 switches reliably.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Claims (10)

  1. Groupe motopompe centrifuge comprenant un contrôleur de débit (10) disposé à l'intérieur du carter de pompe (6), dans le parcours d'écoulement (9) du liquide refoulé, avec un dispositif de commande électromagnétique (14) et avec un levier (16) à bras double, monté pivotant, dont un bras (18) s'engage dans le parcours d'écoulement (9) et dont l'autre bras (19) porte un aimant (20), qui est en interaction, sans contact, avec le dispositif de commande (14), le dispositif de commande (14) étant disposé à l'intérieur d'un boîtier à bornes (11), et au moins la partie du levier (16), qui porte l'aimant (20), étant entourée par un carter de contrôleur (21) hermétiquement clos vers l'extérieur, par conséquent vers l'endroit où il est accessible de l'extérieur après montage dans le carter de pompe séparé du boîtier à bornes (11) et placé dans une disposition voisine de celui-ci, de façon telle que le boîtier à bornes et le carter de contrôleur sont, spatialement et physiquement, totalement séparés l'un de l'autre.
  2. Groupe motopompe centrifuge selon la revendication 1, caractérisé en ce gue le carter de contrôleur (21) présente une partie (22) qui s'engage dans le carter de pompe (6), laquelle a une forme sensiblement cylindrique, est transpercée dans la zone du canal d'écoulement (9) et est intégrée à la manière d'une cartouche dans le carter de pompe (6).
  3. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce que le carter de contrôleur (21) comprend une partie de carter (24) située à l'extérieur du carter de pompe (6) ainsi qu'une partie de carter (22) située à l'intérieur du carter de pompe, et en ce que seule la partie de carter (24) située à l'extérieur du carter de pompe (6) est rendue étanche par rapport au carter de pompe (6).
  4. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce que les bras de levier (18, 19) sont formés par une pièce moulée par injection (16) d'un seul tenant, qui comporte également un axe (17) disposé entre les deux bras de levier et à l'aide duquel le levier (16) est monté pivotant à l'intérieur du carter de contrôleur (21).
  5. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce que le bras de levier (18) s'engageant dans le parcours d'écoulement (9) est d'une configuration en forme de palette et est adapté, quant à son contour extérieur, à la section transversale du canal d'écoulement dans cette zone.
  6. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce qu'un bras de levier (19) est protégé par rapport au carter d'écoulement (9) par une manchette élastique (26) disposée à proximité de l'axe (17).
  7. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce que la force d'écoulement agissant sur le levier (16) diminue avec une déviation croissante du bras de levier (18) en forme de palette hors du parcours d'écoulement.
  8. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu, un commutateur à positions multiples, le groupe étant continuellement en marche dans une position de commutation, continuellement à l'arrêt dans une autre position de commutation, et commuté en fonction de la position de levier du contrôleur de débit dans une troisième position de commutation.
  9. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce que dans le carter de contrôleur (21) est disposé un aimant supplémentaire (30) pour le rappel en position du levier (16).
  10. Groupe motopompe centrifuge selon l'une des revendications précédentes, caractérisé en ce que ledit aimant supplémentaire (30) est orienté de manière répulsive par rapport à l'aimant (20) disposé sur le bras de levier (18).
EP00106498A 1999-03-31 2000-03-25 Ensemble de pompe centrifuge Expired - Lifetime EP1041595B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914581 1999-03-31
DE19914581A DE19914581A1 (de) 1999-03-31 1999-03-31 Kreiselpumpenaggregat

Publications (4)

Publication Number Publication Date
EP1041595A2 EP1041595A2 (fr) 2000-10-04
EP1041595A3 EP1041595A3 (fr) 2002-02-13
EP1041595B1 EP1041595B1 (fr) 2004-10-13
EP1041595B2 true EP1041595B2 (fr) 2011-08-31

Family

ID=7903058

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00106498A Expired - Lifetime EP1041595B2 (fr) 1999-03-31 2000-03-25 Ensemble de pompe centrifuge

Country Status (7)

Country Link
US (1) US6273684B1 (fr)
EP (1) EP1041595B2 (fr)
CN (1) CN1133012C (fr)
AR (1) AR022941A1 (fr)
DE (2) DE19914581A1 (fr)
HK (1) HK1031414A1 (fr)
TW (1) TW440656B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10053248A1 (de) * 2000-10-26 2002-05-08 Kaercher Gmbh & Co Alfred Hochdruckreinigungsgerät
DE10064708A1 (de) * 2000-12-22 2002-07-11 Grundfos As Hauswasserwerk
DE102004048557A1 (de) * 2004-10-04 2006-04-06 Aweco Appliance Systems Gmbh & Co. Kg Flüssigkeitspumpe
MX2009002152A (es) * 2006-08-25 2009-03-16 Pentair Pump Group Inc Sistema de fluido con dispositivo de activacion de bomba.
US8152458B2 (en) * 2009-04-28 2012-04-10 Mp Pumps, Inc. Centrifugal pump with improved drive shaft and heat exchanger
EP2639943B1 (fr) * 2012-03-15 2015-02-25 Grundfos Holding A/S Moteur électrique
PL2808547T3 (pl) * 2013-05-31 2017-01-31 Grundfos Holding As Urządzenie uruchamiające dla agregatu pompowego
US10385859B2 (en) 2013-12-10 2019-08-20 Franklin Electric Company, Inc. In-line pressure boosting system and method
DE102015119832A1 (de) 2015-11-17 2017-05-18 Xylem Ip Management Sàrl Förderpumpe zur Druckerhöhung in einer Leitung und Verfahren zum Betreiben einer Förderpumpe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1545447A (en) † 1977-11-05 1979-05-10 Pektron Ltd Arrangement for dispensing liquids
US4499347A (en) † 1982-01-25 1985-02-12 Richards Gary H Fluid-flow-control-switch valve
GB2173344A (en) † 1985-03-13 1986-10-08 Powered Shower Systems Limited Fluid supply device including fluid pressure operated switch
GB2247920A (en) † 1990-08-28 1992-03-18 Whitbread And Company Public L A pump controller
DE3780093T2 (de) † 1986-07-02 1993-01-21 Pektron Ltd Fluessigkeitsspendevorrichtung.

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH499018A (de) * 1968-09-03 1970-11-15 Troesch Hans A Dr Ing Umwälzpumpe für Heizungsanlagen
US3819297A (en) * 1972-09-11 1974-06-25 Gen Gas Light Co Centrifugal pump assembly
US3992598A (en) * 1974-12-04 1976-11-16 Afton Incorporated Airflow velocity switch
US4085336A (en) * 1976-08-09 1978-04-18 Paul F. Walters Liquid flow activated switch
US4213745A (en) * 1978-09-11 1980-07-22 Roberts Samuel A Pump for central heating system
DE3210762A1 (de) * 1982-03-24 1983-10-13 Grundfos A/S, 8850 Bjerringbro Pumpenaggregat fuer heizungs- und brauchwasseranlagen
DE3220448C1 (de) * 1982-05-29 1983-08-11 Grundfos A/S, 8850 Bjerringbro Pumpenaggregat fuer Heizungs- und Brauchwasseranlagen
DE3701562C2 (de) * 1986-03-12 1996-02-08 Wilo Gmbh Kreiselpumpe mit Spaltrohrmotor
JPH081537B2 (ja) 1986-05-31 1996-01-10 大日本印刷株式会社 カード及びその情報読み取り方法
US4818177A (en) * 1986-12-10 1989-04-04 Dresser Industries, Inc. Centrifugal pump with integral suction valve
US4924069A (en) * 1987-11-19 1990-05-08 Teledyne Industries, Inc. Hot water supply for tubs
US4791254A (en) * 1987-12-09 1988-12-13 Hydrolevel Company Flow switch
JPH03175195A (ja) * 1989-09-26 1991-07-30 Ebara Corp 水中ポンプ
GB2238664B (en) * 1989-12-02 1994-06-22 Powered Showers Plc Flow switch assembly
DE4201100A1 (de) * 1992-01-17 1993-07-22 Klein Schanzlin & Becker Ag Einrichtung zur regelung des foerderstroms einer kreiselpumpe in geschlossenem rohrnetz
US5183983A (en) * 1992-03-20 1993-02-02 Dwyer Instruments, Inc. Flow switch assembly for fluid flow monitoring
US5624245A (en) * 1994-10-26 1997-04-29 Mp Pumps, Inc. Centrufugal pump with thermally isolated and dynamically air cooled shaft seal assembly
DE29503806U1 (de) * 1995-03-06 1996-07-04 Sihi GmbH & Co KG, 25524 Itzehoe Pumpe zur Förderung heißer Medien
US5737041A (en) * 1995-07-31 1998-04-07 Image Quest Technologies, Inc. TFT, method of making and matrix displays incorporating the TFT
JP3144326B2 (ja) * 1996-12-17 2001-03-12 松下電器産業株式会社 電気湯沸かし器
JPH1116491A (ja) * 1997-06-26 1999-01-22 Dainippon Printing Co Ltd プラズマディスプレイパネル用厚膜パターンの形成方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1545447A (en) † 1977-11-05 1979-05-10 Pektron Ltd Arrangement for dispensing liquids
US4499347A (en) † 1982-01-25 1985-02-12 Richards Gary H Fluid-flow-control-switch valve
GB2173344A (en) † 1985-03-13 1986-10-08 Powered Shower Systems Limited Fluid supply device including fluid pressure operated switch
DE3780093T2 (de) † 1986-07-02 1993-01-21 Pektron Ltd Fluessigkeitsspendevorrichtung.
GB2247920A (en) † 1990-08-28 1992-03-18 Whitbread And Company Public L A pump controller

Also Published As

Publication number Publication date
US6273684B1 (en) 2001-08-14
CN1270280A (zh) 2000-10-18
EP1041595A2 (fr) 2000-10-04
HK1031414A1 (en) 2001-06-15
DE19914581A1 (de) 2000-10-12
TW440656B (en) 2001-06-16
EP1041595A3 (fr) 2002-02-13
AR022941A1 (es) 2002-09-04
EP1041595B1 (fr) 2004-10-13
DE50008180D1 (de) 2004-11-18
CN1133012C (zh) 2003-12-31

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