EP0219360B1 - Betätigungsvorrichtung für eine Wasserversorgungsanlage - Google Patents

Betätigungsvorrichtung für eine Wasserversorgungsanlage Download PDF

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Publication number
EP0219360B1
EP0219360B1 EP86401545A EP86401545A EP0219360B1 EP 0219360 B1 EP0219360 B1 EP 0219360B1 EP 86401545 A EP86401545 A EP 86401545A EP 86401545 A EP86401545 A EP 86401545A EP 0219360 B1 EP0219360 B1 EP 0219360B1
Authority
EP
European Patent Office
Prior art keywords
pump
control circuit
enclosure
transducer
check valve
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
Application number
EP86401545A
Other languages
English (en)
French (fr)
Other versions
EP0219360A1 (de
Inventor
Claude Grenon
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.)
Ets Pompes Guinard Dite Ste
Original Assignee
Ets Pompes Guinard Dite Ste
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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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9322319&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0219360(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ets Pompes Guinard Dite Ste filed Critical Ets Pompes Guinard Dite Ste
Priority to AT86401545T priority Critical patent/ATE44803T1/de
Publication of EP0219360A1 publication Critical patent/EP0219360A1/de
Application granted granted Critical
Publication of EP0219360B1 publication Critical patent/EP0219360B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/022—Stopping, starting, unloading or idling control by means of pressure

Definitions

  • the present invention relates to devices for controlling a water supply installation.
  • a device for controlling a water supply installation which comprises an airtight and water tight enclosure.
  • This enclosure opens an input intended to be connected by a non-return valve to a pump with an electric control circuit. It also leads to an outlet intended to be connected to a user device such as a tap, for example, a shower.
  • the enclosure is provided with means for reducing its volume when the pressure therein decreases. (Exponent type hydrostat supplied by EXPO / S in Lillesand Norway).
  • This device has the great advantage of eliminating continual pressure variations in the installation, which are unpleasant to the user, compared with the prior known devices with a reservoir and a pressure switch, interposed between the pump and the valve.
  • this Norwegian device comprises a body in which are delimited a first chamber where the water arrives from the pump by a non-return valve.
  • the pressure in this chamber depends directly on the pressure delivered by the pump.
  • a second air chamber is planned.
  • the pre-inflation pressure in this chamber determines the pump start-up pressure.
  • a third chamber is separated from the second by a piston and from the first by a valve with a nozzle.
  • the air pressure in the second chamber lowers the piston which separates the second chamber from the third chamber.
  • a magnet carried by the upper part of the piston releases the contactor which controls the pump and, on power-up, the pump starts.
  • the piston in the low position pushes the valve separating the first chamber from the third chamber and puts these chambers in communication.
  • Water from the pump passes through the first chamber and goes to the third chamber through the open valve. If the tap is closed, the pressure increases in the third chamber and pushes back the piston which separates the second chamber from the third chamber. Going up, the piston releases the valve which closes. Water continues to penetrate gently into the third chamber through the nozzle by pushing the piston. In the high position of the piston, the magnet opens the contactor and stops the pump. When the tap is opened, water flows from the third chamber. The air pressure in the second chamber pushes the piston back. The magnet attached to the piston descends and establishes the power contact for the pump which starts. If the pump flow is higher than the tap flow, the pressure rises in the third chamber and causes the piston to be pushed back to the second chamber.
  • This device can only operate in a vertical position. In the other positions, the movement of the magnet, obtained using springs, is hindered.
  • This device is complex because it includes a large number of moving parts.
  • the nozzle may be clogged with water impurities or with limescale.
  • the pressure can no longer increase in the third chamber and push back the piston to stop the pump.
  • a relatively large pressure variation of 0.6 to 1.4 bar is required depending on the pre-inflation pressure of the second chamber. This pressure variation is linked to the stroke of the piston to establish or cut the contact which controls the pump.
  • the major disadvantage is that, if the tap is open, the pump starts and continues to operate, even if it does not deliver (for example because there is no more water in the well, because the pump is deactivated, because a pipe is blocked, etc.). This operation without flow or without water causes rapid destruction of the pump. And even if the valve is closed in such an operating case, as the pump no longer provides flow, the pressure in the third chamber cannot rise and command the pump to stop.
  • the device according to the invention overcomes the aforementioned drawbacks by allowing operation in a position other than vertical, while having few moving parts. Any danger of clogging of a nozzle is eliminated.
  • the pressure variation which is necessary to control the cycles of starting and stopping of the pump is much less than before, which makes it possible to use pumps whose characteristic is relatively flat (curve of variation of the height as a function of flow).
  • the device according to the invention provides unequaled security compared to the previous device when the pump is operating without delivering by the fact that in this case the pump stops operating soon after the incident.
  • US-A-4 124 331 describes a device which stops the pump when it does not deliver. This device has a different and rather complex structure.
  • the control device is characterized in that the non-return valve cooperates with a second transducer intended to energize the pump control circuit when the non-return valve is open, the two transducers being electrically connected along two branches in parallel on the electrical control circuit of the pump and the first transducer is connected to the electrical control circuit of the pump by a relay to de-energize its connection branch after a prescribed period.
  • the installation represented in FIG. 1 comprises a well 1 of water communicating by a conduit 2 with the admission of a pump 3.
  • the discharge of the pump communicates by a conduit 4 with a tap 5, a device 6 according to the the invention being mounted on this conduit 4.
  • the device according to the invention is shown in Figure 2. It comprises a body 7 of airtight and water tight plastic. This body is provided with an inlet 8 intended to be connected to the pump 3 and an outlet 9 intended to be connected to the tap 5.
  • the interior of the body is subdivided by a partition 10 into a compartment 11 for housing the circuits electrical and in an enclosure 12 into which open the inlet and outlet 8 and 9.
  • a membrane which could be elastic where auttle the required elasticity could be imparted by a spring and which, in this case, receives its elasticity by a chamber air 14, extends in the enclosure by resting on a cup 15 provided with two orifices 16 and 17.
  • the cup also provides, around the orifice 17, a sleeve 18.
  • a pre-inflation valve 19 is provided to allow the compartment 14 to be inflated by introducing air into it.
  • a rod 20 is pushed back by the membrane 13 while being guided by the sleeve. It enters by its opposite end into a housing formed by a sheath 21 molded with the wall 10. In an intermediate position on the rod 20, is provided a flange 22 on which the end of a helical spring 23 rests the other end of which rests on an internal shoulder 24 of the sleeve 21. In the end of the rod 20 opposite the membrane 13, two magnets 25 are embedded. Opposite these magnets when the rod 20 is pressed in maximum in the sheath 21, there is a Hall effect cell 26 soldered to a printed circuit 27 constituting the control circuit of the pump 3.
  • the cell 26 is connected to the printed circuit 27 by means of a relay 28 power off of the branch of the circuit on which the cell 26 is mounted after a prescribed time, in this case 6 seconds.
  • the membrane 13 and the compartment 14 constitute means for reducing the volume of the enclosure 12 when the pressure therein decreases. All of the parts 20 to 26 constitute a first transducer intended to energize the electrical circuit controlling the pump when the volume of the enclosure has decreased to a given value, in this case when the membrane 13 s apply tightly to cup 15.
  • a non-return valve 29 comprising a disc 30 and a pusher 31 whose free end is housed in a cavity of the sleeve 21 for guidance purposes.
  • a helical return spring 32 is mounted between the sheath 21 and the valve 30 around the rod 31, around the rod 31, a helical return spring 32.
  • a protrusion 33 carrying two magnets 34.
  • a Hall effect cell 35 whose legs 36 forming connection branches are welded to the printed circuit 27 serving as a control circuit for the pump 3.
  • An indicator light 37 makes it possible to see if the circuit 27 is energized.
  • An indicator light 38 makes it possible to see if the Hall effect cell 26 is energized.
  • An indicator light 39 makes it possible to see if the Hall effect cell 35 is energized.
  • a push button 40 with exit button enables the circuit 27 to be energized from the outside independently of the connection of cells 26 and 35.
  • the control device according to the invention operates in the following manner.
  • the pump 3 does not work and the valve 5 is closed.
  • the non-return valve 29 is applied to its seat.
  • the rod 20 is in the low position, which means that the magnets 25 are distant from the cell 26.
  • the membrane 13 is not applied to the cup 15 so that the volume of the enclosure 12 is relatively large.
  • the water therein is under a pressure of 3 bar, the pressure of compartment 14 being of course also 3 bar.
  • the tap 5 has been opened.
  • the pressure in the enclosure 12 decreases to 1 bar.
  • the membrane 13 tends to be applied against the cup 15 by reducing the volume of the enclosure 12.
  • the pressure in the compartment 14 comes back to 1 bar, which is the pre-inflation pressure obtained by the valve 19, of the water passing of the space between the membrane 13 and the cup 15 in the enclosure 12 through the hole 16.
  • the membrane 13 pushes the rod 20 against the spring 23.
  • the magnets 25 come opposite the cell 26 and the 'excite.
  • the cell 26 controls via the relay 28 the electrical circuit 27 for controlling the pump. Pump 3 is running.
  • Figure 6 shows the normal operating state of the installation.
  • the membrane 13 has moved away from the cup 15, and the rod 20 no longer being pushed back by the membrane, the spring 23 pushes the flange 22 on the edge of the sleeve 18.
  • the magnets 25 move away from cell 26 and de-energize it.
  • the motor control circuit 27 remains energized, however, due to the cooperation of the magnets 34 and the cell 35, the remoteness of the magnets 34 from the cell 35 causing the latter to energize the circuit 27 while when the magnets 34 are opposite the cell 35 when the non-return valve 29 is applied to its seat, the cell ceases to energize the circuit 27.
  • Hall effect cells one could also use flexible blade switches or other transducer elements capable of opening or closing an electrical circuit in response to the detection of a displacement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Massaging Devices (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Domestic Plumbing Installations (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Water Treatment By Sorption (AREA)
  • Flow Control (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (5)

1. Betätigungsvorrichtung für eine Wasserversorgungsanlage bestehend aus einem luft- und wasserdicht abgeschlossenen Gehäusebereich (12) mit einer Eintrittsöffnung (8), die durch ein Rückschlagventil (29) an eine Pumpe (3) mit einem elektrischen Betätigungsschaltkreis (27) anschließbar ist und mit einer Austrittsöffnung (9) zum Anschluß an einen Verbraucher (5) und mit Mitteln (13, 14) zur Volumenverminderung versehen ist, wenn der darin herrschende Druck nachläßt, und einem ersten Transduktor zum Anschalten der Spannung an den elektrischen Schaltkreis (27) der Pumpe (3), wenn das Volumen in dem Gehäusebereich (12) sich bis auf einen bestimmten Wert vermindert hat, dadurch gekennzeichnet, daß das Rückschlagventil (29) mit einem zweiten Transduktor (34, 35) zusammenarbeitet, der zum Anschalten der Spannung an den Schaltkreis (27) der Pumpe ausgebildet ist, wenn das Rückschlagventil (29) geöffnet ist, wobei die beiden Transduktoren (20-26, 24, 35) elektrisch über zwei parallele Zweige an den Schaltkreis (27) der Pumpe angeschlossen sind, und daß der erste Transduktor (20-26) mit dem Schaltkreis (27) der Pumpe durch ein Relais (28) verbunden ist, das die Spannung in seinem Verbindungzweig nach einer vorgeschriebenen Zeitdauer abschaltet.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Mittel zur Erhöhung des Volumens durch eine elastische Membran (13) gebildet sind, die eine der Wände des Gehäusebereiches bildet.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der erste Transduktor eine Stange (20) aufweist, die durch die Mittel zur Volumenverminderung verdrängt wird und ein die Position anzeigendes Element (25) aufweist, das mit einem ersten Hall-Effekt-Element (26) zusammenwirkt.
4. Vorrichtung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß der zweite Transduktor ein zweites Positionsanzeigeelement (34) aufweist, das an dem Rückschlagventil (29) angeordnet wird und mit einem zweiten Hall-Effekt-Element (35) zusammenwirkt.
5. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die Positionsanzeigeelemente Magnete sind.
EP86401545A 1985-08-21 1986-07-10 Betätigungsvorrichtung für eine Wasserversorgungsanlage Expired EP0219360B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86401545T ATE44803T1 (de) 1985-08-21 1986-07-10 Betaetigungsvorrichtung fuer eine wasserversorgungsanlage.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8512573A FR2586457B1 (fr) 1985-08-21 1985-08-21 Dispositif de commande d'une installation d'alimentation en eau
FR8512573 1985-08-21

Publications (2)

Publication Number Publication Date
EP0219360A1 EP0219360A1 (de) 1987-04-22
EP0219360B1 true EP0219360B1 (de) 1989-07-19

Family

ID=9322319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401545A Expired EP0219360B1 (de) 1985-08-21 1986-07-10 Betätigungsvorrichtung für eine Wasserversorgungsanlage

Country Status (7)

Country Link
EP (1) EP0219360B1 (de)
JP (1) JPS6350697A (de)
AT (1) ATE44803T1 (de)
DE (1) DE3664513D1 (de)
ES (1) ES8707588A1 (de)
FR (1) FR2586457B1 (de)
PT (1) PT83216B (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2006279A6 (es) * 1987-12-18 1989-04-16 Banus Garcia Fernando Aparato para el control de la puesta en marcha y paro de una bomba hidraulica.
IT1251968B (it) * 1991-10-21 1995-05-27 Watertech Srl Apparecchiatura per il controllo dell'avviamento e dell'arresto di unapompa di una rete di distribuzione di acqua.
IT1286618B1 (it) * 1996-05-03 1998-07-15 Lapa Services S R L Dispositivo per il comando dell'alimentazione di acqua (od altro liquido) mediante pompa e per la protezione della stessa in caso di
IT1295577B1 (it) * 1997-02-13 1999-05-13 Hydroservice S R L Dispositivo per il comando di una pompa idraulica,a controllo proporzionale computerizzato autoregolante
ES2149667B1 (es) * 1997-11-04 2001-04-16 Garcia Fernando Banus Aparato para el control del arranque y paro de una bomba hidraulica.
ES2177371B1 (es) * 1999-11-11 2004-09-16 Bogemar, S.L. Regulador de presion para una instalacion de impulsion de agua mediante electrobomba.
ITFI20030144A1 (it) * 2003-05-23 2004-11-24 Enrico Raddi Gruppo autoclave di piccolo imgombro, per impianti
ITFI20030264A1 (it) * 2003-10-17 2005-04-18 Mac 3 S P A Dispositivo per il controllo automatico di una pompa idraulica.
JP4858102B2 (ja) * 2006-11-14 2012-01-18 富士ゼロックス株式会社 シート屑処理装置及びこれを用いた画像形成装置
IT1398617B1 (it) * 2008-12-04 2013-03-08 Raddi Un gruppo regolatore per pilotare una elettropompa di alimentazione di una rete locale di distribuzione di un liquido

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1146007B (de) * 1959-02-25 1963-03-21 Odd Fredheim Johnsen Wasserversorgungsanlage
FR90551E (fr) * 1961-10-06 1968-01-05 Perfectionnement aux installations de distribution d'un liquide fourni par une moto-pompe et dispositifs en résultant
US4124331A (en) * 1976-12-30 1978-11-07 Hitachi, Ltd. Automatic control systems for a well pump installation

Also Published As

Publication number Publication date
ES8707588A1 (es) 1987-08-16
EP0219360A1 (de) 1987-04-22
ATE44803T1 (de) 1989-08-15
FR2586457B1 (fr) 1989-06-23
DE3664513D1 (en) 1989-08-24
ES556941A0 (es) 1987-08-16
PT83216A (fr) 1986-09-01
JPS6350697A (ja) 1988-03-03
PT83216B (pt) 1992-10-30
FR2586457A1 (fr) 1987-02-27

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