WO1998036339A1 - Dispositif de regulation informatique proportionnel et auto-reglable pour pompe a eau - Google Patents

Dispositif de regulation informatique proportionnel et auto-reglable pour pompe a eau Download PDF

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Publication number
WO1998036339A1
WO1998036339A1 PCT/IT1998/000024 IT9800024W WO9836339A1 WO 1998036339 A1 WO1998036339 A1 WO 1998036339A1 IT 9800024 W IT9800024 W IT 9800024W WO 9836339 A1 WO9836339 A1 WO 9836339A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
previous
water
flow
pressure
Prior art date
Application number
PCT/IT1998/000024
Other languages
English (en)
Inventor
Vincenzo Consoli
Roberto Gigliotti
Luciano Masini
Luca Pinori
Original Assignee
Hydroservice S.R.L.
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 Hydroservice S.R.L. filed Critical Hydroservice S.R.L.
Priority to EP98905610A priority Critical patent/EP0901654A1/fr
Publication of WO1998036339A1 publication Critical patent/WO1998036339A1/fr

Links

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
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2066—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using controlling means acting on the pressure source
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/06—Pressure in a (hydraulic) circuit
    • F04B2205/061—Pressure in a (hydraulic) circuit after a throttle
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/17—Opening width of a throttling device
    • F04B2205/172—Opening width of a throttling device after the pump outlet

Definitions

  • the present invention relates to a device for controlling a water pump. Description of the Prior Art
  • a first system makes use of a switch operated by pressure pulses which activates and deactivates the electric pump between minimum and maximum pressure values detected in the water main; the switch is associated to a liquid accumulator with an air-loaded flexible diaphragm with the function of extending the intervals of time between the pump cutting in and cutting out.
  • the drawbacks associated with this system are well known and can be summarized mainly as: high installation and maintenance costs, limited scope of usefulness, and the risk of the water becoming polluted as the result of bacteria " proliferating on the diaphragm.
  • a device disclosed in Italian patent application n° MI91A 002777 is substantially similar, the only significant differences being that the diaphragm is counterbalanced by a spring and that the flow control and check valve has no return spring and therefore can be installed only in the vertical position. Finally, in a device of the same type made by the Italian company RITEC S.r.l., the flow control valve is replaced by a pulse turbine, again in conjunction with a Hall effect transducer.
  • a further drawback affecting all the above mentioned systems is their inability to recognize a drop in pressure caused not by effective user demand, but rather by small leaks which cause the pump to cut in continually and replenish the loss, wasting both water and energy.
  • a first object of the present invention is to provide a control device for a water-pressurizing electric pump unaffected by the drawbacks mentioned above, and in particular a device that makes no use of a diaphragm type pressure sensing element.
  • a further object of the present invention is to provide a device of the aforementioned type such as will monitor pressure continuously, identifying and responding automatically to a variety of situations that may arise during the operation of the system served by the pump, including structural changes to the system itself.
  • control device for an electric pump which comprises a body hydraulically connectable to the delivery side of the pump and to an outlet section from which water flows to the system which has to be fed.
  • the body accommodates a flow sensing and flow check means .
  • Pressure is sensed by a gauge element associated with the outlet section and capable of generating digital information that will be a function of the pressure sensed within the section.
  • the output signals from the flow and pressure sensing elements are managed by a microprocessor that pilots the activation and deactivation of the pump in response to these signals and on the basis of previously programmed instructions.
  • -figure 1 is a median longitudinal section of the device according to the invention, viewed in an operating position assumed when there is no flow present;
  • -figure 2 is a longitudinal section identical to that of figure 1, illustrating the device in an operating position assumed when flow is present;
  • -figure 3 illustrates a pressure sensing means associated with the outlet section of the device
  • the device comprises a body 1 having a tubular portion la of varying section and an open housing lb extending from one side of the tubular portion.
  • the tubular portion la presents an internally threaded portion of larger section lc, coinciding with the water inlet, and an externally threaded portion of smaller section Id that coincides with the water outlet.
  • a cylindrical sleeve 2 screwed into and coaxial with the endmost part of the inlet section lc of body 1 in such a way substantially as to form an extension of said section; an O-ring 3 is fitted to the outer surface of sleeve 2 ensuring a fluid tight coupling.
  • the larger section lc of body 1 houses a check valve 5 consisting in a stem 5a axially free accomodated within seats 4, and a circular plate 5b coaxial with stem 5a, of which the diameter is marginally greater than the bore of sleeve 2.
  • Plate 5b is breasted tightly with sleeve 2, so as to prevent water from flowing through the bore, by a conical coil spring 6 mounted around stem 5a between plate 5b and seat 4 in section la.
  • the side of plate 5b contacting sleeve 2 is provided with a seal 7.
  • a permanent magnet 8 is mounted to the end of a radial arm 5c extending upwards from stem 5a.
  • Housing lb accomodates a pressure gauge 11 of substantially conventional embodiment, consisting in a Bourdon tube, which is connected externally to section Id by way of a threaded cylindrical metal element 11a, sealingly engaging, by way of an O-ring 10, in a threaded hole 9 formed through the wall of section Id.
  • Element 11a affords a pressure sensing duct 12 interconnecting the bore of section Id with the bore of Bourdon tube lib, which extends from cylindrical element 11a.
  • a precision mechanism lie is pivotally associated with the end of the Bourdon tube, and in its turn engages in meshing contact by way of a toothed sector lid with the lateral surface of a cylindrical pin 13, pivotally supported by an inside wall of housing lb, of which the free end carries a rotary encoder 14.
  • an electronic circuit board denoted 15 carrying a number of components of which the specific functions will be described hereinafter: an optical sensor 16 positioned in such a way as to read encoder 14; a microprocessor 17; a reset button 18; three light emitting diodes 19; and a Hall effect transducer 20 positioned in such a manner as to ensure its exact alignment with magnet 8 when check valve 5 is closed. Finally, the necessary wires are routed through an access hole 21 afforded by one wall of housing lb.
  • Housing lb is fitted with a cover 22 and an interposed seal 23, secured by means of screws 24.
  • Projecting from the inside face of cover 22 are a set of light guides 25, positioned in alignment with LEDs 19 and capped by lens elements 26, by which the glow from LEDs is conveyed to the surface, and also a pin 27, positioned in alignment with reset button 18, providing the means by which to depress the button, exploiting the limited flexibility of cover 22.
  • the operation of the control device according to the invention is the following.
  • the pump is activated by depressing reset button 18, whereupon water coming from the pump enters body 1 by way of sleeve 2 connected to the inlet section, displacing check valve 5 as shown in figure 2.
  • the displacement of the valve causes magnet 8 to move away from the Hall effect transducer 20, which trasmits a signal to the electric motor, to keep the pump into operation.
  • Downstream of check valve 5 a part of the pressurized flow of water passes into sensing duct 12 from section Id of body 1 then up through cylindrical element 11a into Bourdon tube lib.
  • the tube undergoes a deformation, causing a shift of mechanism lie and sector lid that causes pin 13 to rotate about its axis, and with it encoder 14.
  • the movement of encoder 14 creates digital combinations that are decoded by optical sensor 16, the sensor in turn being connected to microprocessor 17 which is able as a result to receive signals corresponding to the pressure sensed through the gauge.
  • microprocessor 17 which is able as a result to receive signals corresponding to the pressure sensed through the gauge.
  • the analysis of these signals allows to pilot the operation of the pump on the basis of a previously installed program.
  • the water leaves the device through section Id and is directed into the circuit served by the pump.
  • the delay ensures that the pump is given time to restore full pressure in the system before shutting off. At this point the encoder stays put on the combination most recently formulated, representing maximum pressure with the pump operating and the check valve closed. If a tap is turned on and pressure in the system then falls below a minimum set point, this will be sensed by way of the encoder and the pump restarted so that pressure is restored.
  • Microprocessor 17 is programmable, as already said, in such a way as will enable the device to perform a range of self-regulating and self-test functions: identifying a shutdown caused by the pump running dry and thereafter entering a control sequence to reset and restart the pump; self regulation of the minimum pressure set point at which the pump cuts in; detection of leaks from the system.
  • identifying a shutdown caused by the pump running dry and thereafter entering a control sequence to reset and restart the pump self regulation of the minimum pressure set point at which the pump cuts in; detection of leaks from the system.
  • the device will lock up and generate signals serving in the example of figure 4 to light up the indicator LEDs 19; other alternative and/or parallel acoustic warning systems might be adopted to equally good effect . Once the water returns, normal operating conditions can be reinstated by pressing the reset button 18.
  • the microprocessor activates the pump and memorizes the pressure registering in the column above the device as the water reaches the tap located highest up in the system, which will have been opened beforehand.
  • the minimum pressure set point at which the pump cuts in will then be established at a value exceeding the memorized value by a given programmable amount .
  • the microprocessor is also capable of detecting leaks in the system. As shown in block C of the flow diagram, the microprocessor keeps a statistical record of the starts made by the pump, and on detecting any recurring pattern over a predetermined lapse of time, even with intervals of high consumption suggesting water demands from the users, will proceed to indicate the possible existence of a leak by generating an alarm signal to activate a visual indicator (LED 19) or a sounder.
  • a visual indicator LED 19
  • the device according to the invention represents a significant step forward in the state of the art, resolving as it does a whole series of problems in devices as used hitherto for the same purpose, and affording additional features of great usefulness .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Transmission Device (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un dispositif informatique proportionnel et auto-réglable qui commande une pompe à eau. Ledit dispositif comporte un corps (1), relié par voie hydraulique à la conduite d'alimentation de la pompe, ainsi qu'une partie débouché à partir de laquelle l'eau s'écoule vers le système desservi par la pompe. L'intérieur du corps loge un appareil (5) capteur et régulateur de débit et un capteur (11) de pression qui se compose d'un tube de Bourdon couplé à un codeur (14) rotatif. Les signaux de sortie provenant des capteurs de débit et de pression sont transmis à un microprocesseur (17) qui déclenche ou arrête la pompe et ce, sur la base des informations contenues dans les signaux et conformément à des séquences de manoeuvres déterminées sur la base d'instructions préalablement programmées.
PCT/IT1998/000024 1997-02-13 1998-02-13 Dispositif de regulation informatique proportionnel et auto-reglable pour pompe a eau WO1998036339A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98905610A EP0901654A1 (fr) 1997-02-13 1998-02-13 Dispositif de regulation informatique proportionnel et auto-reglable pour pompe a eau

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPI97A000009 1997-02-13
IT97PI000009A IT1295577B1 (it) 1997-02-13 1997-02-13 Dispositivo per il comando di una pompa idraulica,a controllo proporzionale computerizzato autoregolante

Publications (1)

Publication Number Publication Date
WO1998036339A1 true WO1998036339A1 (fr) 1998-08-20

Family

ID=11394075

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1998/000024 WO1998036339A1 (fr) 1997-02-13 1998-02-13 Dispositif de regulation informatique proportionnel et auto-reglable pour pompe a eau

Country Status (3)

Country Link
EP (1) EP0901654A1 (fr)
IT (1) IT1295577B1 (fr)
WO (1) WO1998036339A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1074745A1 (fr) * 1999-08-06 2001-02-07 Eng & Mark s.r.l. Machine hydraulique munie d'un dispositif de commande automatique
WO2001005349A3 (fr) * 1999-07-15 2002-05-02 Hydroair A Unit Of Itt Ind Inc Systeme de captage de pression de cuve a remous capable de detecter un piegeage
EP1241357A1 (fr) * 2001-03-12 2002-09-18 GARDENA Kress + Kastner GmbH Groupe de pompage
ES2177371A1 (es) * 1999-11-11 2002-12-01 Bogemar Sl Regulador de presion para una instalacion de impulsion de agua mediante electrobomba.
US20120148419A1 (en) * 2010-12-13 2012-06-14 Aspen Randal S Pump Control and Method
ITFI20120079A1 (it) * 2012-04-20 2013-10-21 Trevi Engineering S R L Unipersona Le "apparecchio per il controllo dell'avviamento e dell'arresto di una pompa di una rete di distribuzione idrica"
ITFI20130231A1 (it) * 2013-10-04 2015-04-05 Trevi Engineering S R L Unipersona Le "apparecchio per la gestione del flusso di un liquido"
WO2015139744A1 (fr) * 2014-03-19 2015-09-24 Husqvarna Ab Système de commande d'écoulement pour dispositif de pompage
US20170213451A1 (en) 2016-01-22 2017-07-27 Hayward Industries, Inc. Systems and Methods for Providing Network Connectivity and Remote Monitoring, Optimization, and Control of Pool/Spa Equipment
US10030647B2 (en) 2010-02-25 2018-07-24 Hayward Industries, Inc. Universal mount for a variable speed pump drive user interface
US10718337B2 (en) 2016-09-22 2020-07-21 Hayward Industries, Inc. Self-priming dedicated water feature pump
US20200319621A1 (en) 2016-01-22 2020-10-08 Hayward Industries, Inc. Systems and Methods for Providing Network Connectivity and Remote Monitoring, Optimization, and Control of Pool/Spa Equipment
US10976713B2 (en) 2013-03-15 2021-04-13 Hayward Industries, Inc. Modular pool/spa control system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742233A (en) * 1971-08-20 1973-06-26 Dresser Ind Motion displacement transducer
JPS61126398A (ja) * 1984-11-22 1986-06-13 Hitachi Ltd 給水装置の予測末端圧力一定制御装置
US4659291A (en) * 1983-06-22 1987-04-21 Valdes Osvaldo J Hydroelectric switch for controlling electric motor driven pump
EP0219360A1 (fr) * 1985-08-21 1987-04-22 Ets. POMPES GUINARD Société dite: Dispositif de commande d'une installation d'alimentation en eau
WO1992013195A1 (fr) * 1991-01-22 1992-08-06 Jedray Pty. Ltd. Dispositif de securite
ITMI912777A1 (it) * 1991-10-21 1993-04-21 Watertech Srl Apparecchiatura per il controllo dell'avviamento e dell'arresto di una pompa di una rete di distribuzione di acqua.
DE19503403A1 (de) * 1995-02-02 1996-08-08 Ritec Srl Regelvorrichtung für eine Wasserversorgungsanlage

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742233A (en) * 1971-08-20 1973-06-26 Dresser Ind Motion displacement transducer
US4659291A (en) * 1983-06-22 1987-04-21 Valdes Osvaldo J Hydroelectric switch for controlling electric motor driven pump
JPS61126398A (ja) * 1984-11-22 1986-06-13 Hitachi Ltd 給水装置の予測末端圧力一定制御装置
EP0219360A1 (fr) * 1985-08-21 1987-04-22 Ets. POMPES GUINARD Société dite: Dispositif de commande d'une installation d'alimentation en eau
WO1992013195A1 (fr) * 1991-01-22 1992-08-06 Jedray Pty. Ltd. Dispositif de securite
ITMI912777A1 (it) * 1991-10-21 1993-04-21 Watertech Srl Apparecchiatura per il controllo dell'avviamento e dell'arresto di una pompa di una rete di distribuzione di acqua.
EP0539721A1 (fr) * 1991-10-21 1993-05-05 WATERTECH S.r.l. Appareil pour circuit de commande marche/arrêt pour une pompe dans un système de distribution d'eau
DE19503403A1 (de) * 1995-02-02 1996-08-08 Ritec Srl Regelvorrichtung für eine Wasserversorgungsanlage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 320 (M - 530) 30 October 1986 (1986-10-30) *

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001005349A3 (fr) * 1999-07-15 2002-05-02 Hydroair A Unit Of Itt Ind Inc Systeme de captage de pression de cuve a remous capable de detecter un piegeage
US6390781B1 (en) 1999-07-15 2002-05-21 Itt Manufacturing Enterprises, Inc. Spa pressure sensing system capable of entrapment detection
AU778753B2 (en) * 1999-07-15 2004-12-16 Hydroair A Unit Of Itt Industries, Inc. Spa pressure sensing system capable of entrapment detection
EP1074745A1 (fr) * 1999-08-06 2001-02-07 Eng & Mark s.r.l. Machine hydraulique munie d'un dispositif de commande automatique
ES2177371A1 (es) * 1999-11-11 2002-12-01 Bogemar Sl Regulador de presion para una instalacion de impulsion de agua mediante electrobomba.
EP1241357A1 (fr) * 2001-03-12 2002-09-18 GARDENA Kress + Kastner GmbH Groupe de pompage
US10030647B2 (en) 2010-02-25 2018-07-24 Hayward Industries, Inc. Universal mount for a variable speed pump drive user interface
US12018677B2 (en) 2010-02-25 2024-06-25 Hayward Industries, Inc. Universal mount for a variable speed pump drive user interface
US11572877B2 (en) 2010-02-25 2023-02-07 Hayward Industries, Inc. Universal mount for a variable speed pump drive user interface
US20120148419A1 (en) * 2010-12-13 2012-06-14 Aspen Randal S Pump Control and Method
US8920131B2 (en) * 2010-12-13 2014-12-30 A.Y. Mcdonald Mfg. Co. Pump control and method
ITFI20120079A1 (it) * 2012-04-20 2013-10-21 Trevi Engineering S R L Unipersona Le "apparecchio per il controllo dell'avviamento e dell'arresto di una pompa di una rete di distribuzione idrica"
EP2653725A1 (fr) * 2012-04-20 2013-10-23 Trevi Engineering S.r.l. Unipersonale Appareil permettant de commander le démarrage et l'arrêt d'une pompe d'un réseau de distribution d'eau
US10976713B2 (en) 2013-03-15 2021-04-13 Hayward Industries, Inc. Modular pool/spa control system
US11822300B2 (en) 2013-03-15 2023-11-21 Hayward Industries, Inc. Modular pool/spa control system
EP2857684A1 (fr) * 2013-10-04 2015-04-08 Trevi Engineering S.r.l. Unipersonale Appareil de gestion de l'écoulement d'un liquide
ITFI20130231A1 (it) * 2013-10-04 2015-04-05 Trevi Engineering S R L Unipersona Le "apparecchio per la gestione del flusso di un liquido"
WO2015139744A1 (fr) * 2014-03-19 2015-09-24 Husqvarna Ab Système de commande d'écoulement pour dispositif de pompage
US10272014B2 (en) 2016-01-22 2019-04-30 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
US20200319621A1 (en) 2016-01-22 2020-10-08 Hayward Industries, Inc. Systems and Methods for Providing Network Connectivity and Remote Monitoring, Optimization, and Control of Pool/Spa Equipment
US11000449B2 (en) 2016-01-22 2021-05-11 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
US11096862B2 (en) 2016-01-22 2021-08-24 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
US11122669B2 (en) 2016-01-22 2021-09-14 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
US11129256B2 (en) 2016-01-22 2021-09-21 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
US10363197B2 (en) 2016-01-22 2019-07-30 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
US11720085B2 (en) 2016-01-22 2023-08-08 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
US10219975B2 (en) 2016-01-22 2019-03-05 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
US20170213451A1 (en) 2016-01-22 2017-07-27 Hayward Industries, Inc. Systems and Methods for Providing Network Connectivity and Remote Monitoring, Optimization, and Control of Pool/Spa Equipment
US10718337B2 (en) 2016-09-22 2020-07-21 Hayward Industries, Inc. Self-priming dedicated water feature pump

Also Published As

Publication number Publication date
ITPI970009A1 (it) 1998-08-13
ITPI970009A0 (it) 1997-02-13
IT1295577B1 (it) 1999-05-13
EP0901654A1 (fr) 1999-03-17

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