EP2591236B1 - Ensemble pompe de jardin pourvu d'un capteur de débit - Google Patents

Ensemble pompe de jardin pourvu d'un capteur de débit Download PDF

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Publication number
EP2591236B1
EP2591236B1 EP10728704.7A EP10728704A EP2591236B1 EP 2591236 B1 EP2591236 B1 EP 2591236B1 EP 10728704 A EP10728704 A EP 10728704A EP 2591236 B1 EP2591236 B1 EP 2591236B1
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EP
European Patent Office
Prior art keywords
pump
delay time
drive motor
arrangement according
garden
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.)
Active
Application number
EP10728704.7A
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German (de)
English (en)
Other versions
EP2591236A1 (fr
Inventor
Ram Krishna Agrawal
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.)
Husqvarna AB
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Husqvarna AB
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Publication date
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Publication of EP2591236A1 publication Critical patent/EP2591236A1/fr
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Publication of EP2591236B1 publication Critical patent/EP2591236B1/fr
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Classifications

    • 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
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • 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
    • 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
    • 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump

Definitions

  • the invention relates to a garden pump arrangement with flow sensor.
  • Such frequent switching can, if the user does not disconnect the drive motor via a switch or by unplugging the connecting cable from the outlet specifically from the mains, go unnoticed by the user and especially in his absence long. Again, a heating of the water in the pump room can not be excluded.
  • the present invention is therefore an object of the invention to provide a garden pump assembly, which offers high security against various accidents with little effort.
  • the invention takes advantage of the finding that garden irrigation pumps by means of irrigation devices such as showerheads, sprayers and the like are typically in use in a mode in which the user frequently pauses between individual irrigation operations, but such breaks are relatively short.
  • substantially increased delay time of at least 1.5 minutes, especially at least 2.0 minutes such breaks in the pump assembly according to the invention does not lead to shutdown of the drive motor, so that no provision for automatically turning the drive motor again must be taken.
  • no pressure sensor is required for a lower pressure threshold at the pump outlet, so that even the described problems with such a pressure sensor, in particular frequent inadvertent switching on and off by leakage water flow can not occur.
  • the elimination of the pressure sensor reduces the cost and space requirements and the complexity of a control device.
  • the delay time is advantageously this not more than 8 minutes, in particular not more than 5 minutes.
  • the delay time between falling below the minimum flow rate and turning off the drive motor is in a range between 2 minutes and 3 minutes.
  • a remote control can be provided with a remote from the pump housing portable remote control module, which can transmit a turn-on signal to the arranged in or on the pump housing control device in a preferred embodiment when operating a control on the remote control module.
  • An additionally communicable switch-off signal from the remote control module to the control device can be provided, but is not necessary because of the automatic switch-off, so that the remote control module can advantageously be simple and inexpensive.
  • a status display may be provided at the pump, which represents different operating or fault states of the pump by different displays the user, preferably in an optical representation.
  • the control device detects whether within a multiple of the delay time amounting monitoring interval, the pump, without water to promote through the output, turned on several times and turned off due to lack of flow again.
  • a monitoring interval of 20 minutes may be predetermined and, with a delay time of 5 minutes after switching on 3 times by the user and multiple automatic switching off due to lack of flow within the monitoring interval, a transition to a second fault condition may be provided by the control device in which the pump remains switched off for a forced break and also can not be switched on by pressing a start button.
  • the duration of the forced break may be, for example, 5 to 20 minutes.
  • the pump within the monitoring interval start over a cumulative period of time, which is suitable, the water in the pump to heat to a temperature that may pose a danger to persons the next time you are pumping water to the dispenser. Due to the forced break, the water in the pump can cool sufficiently to a safe temperature.
  • the forced break can be represented by a fourth status display, which can be particularly emphasized by flashing a display element. A pumping of water through the pump outlet resets the monitoring of the monitoring interval, because then again supplied via the suction side of cool water in the pump.
  • control device can be designed such that the forced pause can not be aborted by disconnecting the pump from the power supply (for example, by plugging in or unplugging the power supply line).
  • the control device should make sure even after re-connection with the power line that the compulsory break is maintained as possible in its entire length.
  • a fifth status display may be provided during the delay time, which indicates to the user that the delay time is running.
  • a bidirectional signal transmission which serve to transmit an operating condition signal from the pump and can be exploited in the remote control module for controlling a display device, for example, as a status indicator on / off / fault for the current operating state of the pump.
  • the delay time can be adjusted by the user to a limited extent or automatically adapted to the user behavior.
  • the delay time can be set shorter.
  • Fig. 1 shows over a time axis t, the water flow rate F through the output of a garden pump in a plant irrigation by means of a user-operable irrigation device such as a syringe or shower SB, which is fed via a hose SL from a garden pump.
  • a user-operable irrigation device such as a syringe or shower SB
  • pause duration For the shorter pauses PK, for example, assume a pause duration of 40 seconds, for the longer pause PL a pause duration of 2.5 minutes.
  • a conventional garden pump assembly in which, for example, on the output port of a pump, an accessory ZG is mounted, which includes a pressure sensor for detecting the undershooting of a lower pressure threshold and a flow sensor, automatically turns on the drive motor of the pump when the water pressure at the output of the pump below a lower pressure threshold for example, 1 bar, which is also referred to as turn-on, falls.
  • a flow sensor for detecting the undershooting of a lower pressure threshold and a flow sensor
  • timing are in Fig. 2 the operating states of the drive motor over the time axis t shown, wherein two levels are distinguished according to a switched-off state OFF and a switched ON state of the drive motor of the pump PU, between which is switched over rising ON edges and falling OFF edges AE.
  • a switched-off state OFF and a switched ON state of the drive motor of the pump PU, between which is switched over rising ON edges and falling OFF edges AE.
  • the flow rate at the pump outlet falls below the minimum flow rate detected by the flow sensor in the auxiliary device ZB to F0, so that a shutdown process is initiated, the shutdown of the drive motor compared to falling below the threshold of the minimum Flow rate is delayed by a preset delay time VE.
  • the pump therefore still runs around the delay time VE after closing the valve of the irrigation device SB.
  • the delay time VE is for example 20 seconds.
  • the drive motor is switched off, which in the timing diagram after Fig. 2 is represented by the falling OFF edge AE. If the user after an irrigation pause the duration PK of, for example, 70 seconds, the relative positions of the individual edges of the different gradients in Fig.
  • valve opens again on the irrigation device and thereby the pressure at the pump outlet drops, the accessory ZG switches the drive motor of the pump again for a second irrigation process, at the end again an irrigation pause the length PK and a connect another irrigation process.
  • the shutdown of the drive motor is delayed in the same way by the delay time VE against the closing of the valve and thus the drop in the flow rate below the minimum flow rate.
  • a control unit SE arranged in or on the pump housing, which evaluates the sensor signal of the flow sensor FS and can additionally record an activation signal from an actuating element, switches off the drive motor after the minimum flow rate has been undershot.
  • the renewed switching on of the drive motor is effected by a switch-on signal entered via a control element.
  • Fig. 3 schematically the course of the operating state of the drive motor is shown for this purpose.
  • an actuation element TA for generating a switch-on signal can be arranged on a remote from the pump PU portable remote control module RC, which transmits a start signal for switching on the drive motor wirelessly to the control device SE on actuation of the control element TA.
  • the controller SE can not turn on the drive motor from a pressure sensor signal when falling Derive the pressure at the outlet of the pump and the user must deliberately turn on the pump by pressing the control element TA at a point in time prior to the start of an irrigation process Fig. 3 is shown by the time before the rising edge EB of the first irrigation operation Einschaltflanke BB.
  • the controller SE Upon completion of the first watering operation and drop in flow rate below the minimum flow rate detected by the flow sensor FS at the pump outlet, the controller SE prepares to shut off the drive motor with a delay time VF, for which, for example, a time value of 2 minutes is assumed ,
  • the pause duration is greater than the specified in the control device SE delay time VF.
  • the user wants to initiate a renewed irrigation process after the longer irrigation break PL, he must again actuate the control element TA to generate a start signal, after which the drive motor of the pump according to the switch-NB is redesigned and then the irrigation process can proceed.
  • the user can also first open the valve of the irrigation device SB and only then, if he determines that no water is discharged, actuate the control element TA to start the drive motor of the pump.
  • the drive motor of the pump PO continues to run by the delay time VF to the Abschaltflanke FA and then remains over the entire time, during which no new targeted irrigation takes place, in the off state.
  • the leakage flow rate FL which becomes ever smaller during the associated pressure drop over the period LF, has no influence on the operating state of the drive motor, since the pressure drop alone can not cause the drive motor of the pump to be switched on again. Only when the user consciously generates a start signal for the drive motor, it is turned on again.
  • control device SE with the flow sensor FS can be made considerably simpler, more cost-effective and less susceptible to interference than the auxiliary device ZG and that the electrical part of the pump is loaded much less by the less frequent switching operations.
  • the longer delay time VF with at least 1.5 minutes duration thus advantageously allows a significant simplification and reduction of the control device with sensor and preserves the other at the same time the effect of safe shutdown of the pump drive to protect against overheating of the water in the pump room and / or against Damage to the pump due to prolonged dry running.
  • the green LED indicates the normal operation of the pump, while by means of the orange LED, the user is alerted to the course of the delay time and thus to the imminent automatic shutdown of the pump.
  • the red LED is used to signalise that the pump has automatically switched off after the delay has elapsed, with a flashing of the LED indicating that the pump is in the forced pause.

Claims (10)

  1. Ensemble pompe de jardin pourvu d'une pompe (PU) entraînée par un moteur d'entraînement électrique ainsi que d'un dispositif de commande (SE), contenant un capteur de débit et déconnectant le moteur d'entraînement en cas de passage en dessous d'un débit minimal à travers la sortie de pompe, une durée de temporisation étant prédéfinie entre le passage en dessous du débit minimal et la déconnexion de moteur, caractérisé en ce que la durée de temporisation (VF) est d'au moins 1,5 minute et qu'un élément de commande (TA) pouvant être actionné par l'utilisateur est présent pour actionner le moteur d'entraînement après la déconnexion précédente, indépendamment de la pression de sortie de la pompe, et qu'aucun capteur de pression pourvu d'un seuil de connexion n'est prévu.
  2. Ensemble pompe de jardin selon la revendication 1, caractérisé en ce que la durée de temporisation est au moins de 2 minutes.
  3. Ensemble pompe de jardin selon la revendication 1 ou 2, caractérisé en ce que la durée de temporisation est tout au plus de 8 minutes, notamment tout au plus de 5 minutes.
  4. Ensemble pompe de jardin selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le dispositif de commande est conçu pour détecter les durées entre le passage en dessous du débit minimal et le dépassement suivant du débit minimal à l'intérieur de la durée de temporisation.
  5. Ensemble pompe de jardin selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le dispositif de commande est réalisé de façon à détecter les durées entre le passage en dessous du débit minimal et l'actionnement de l'élément de commande après écoulement de la durée de temporisation.
  6. Ensemble pompe de jardin selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le dispositif de commande est conçu pour détecter plusieurs cycles de connexion sans débit à travers la sortie de pompe pendant un intervalle de surveillance.
  7. Ensemble pompe de jardin selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'un dispositif d'affichage est conçu pour représenter de préférence de façon optique plusieurs affichages d'état différents associés à différents états de fonctionnement et/ou de panne de la pompe.
  8. Ensemble pompe de jardin selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le capteur de débit est réalisé sous la forme d'un détecteur de roue à aubes.
  9. Ensemble pompe de jardin selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le dispositif de commande (SE) est intégré avec le capteur de débit (DS) dans le carter de pompe.
  10. Ensemble pompe de jardin selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'un module de télécommande (RC) pouvant être porté indépendamment du carter de pompe contient un élément d'actionnement (TA) pour la connexion du moteur d'entraînement et réalisé pour la transmission sans fil d'un signal de démarrage au dispositif de commande.
EP10728704.7A 2010-07-07 2010-07-07 Ensemble pompe de jardin pourvu d'un capteur de débit Active EP2591236B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/059741 WO2012003870A1 (fr) 2010-07-07 2010-07-07 Ensemble pompe de jardin pourvu d'un capteur de débit

Publications (2)

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EP2591236A1 EP2591236A1 (fr) 2013-05-15
EP2591236B1 true EP2591236B1 (fr) 2016-04-20

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EP10728704.7A Active EP2591236B1 (fr) 2010-07-07 2010-07-07 Ensemble pompe de jardin pourvu d'un capteur de débit

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WO (1) WO2012003870A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013106970A1 (de) 2013-07-03 2015-01-22 Leo Gruppe Gmbh Gartenpumpe mit verbessertem Ansaugverhalten
DE202013102910U1 (de) 2013-07-03 2013-09-09 Leo Gruppe Gmbh Gartenpumpe mit verbessertem Ansaugverhalten
FR3013082A1 (fr) * 2013-11-08 2015-05-15 Groupe Leo S A Commande de moteur d'entrainement d'une pompe a eau de jardinage servant a controler son demarrage et son arret
CN107110151B (zh) * 2015-03-10 2020-03-10 桑德霍夫工程公司 补偿泄漏损失的方法以及输送规定量的液体的输送系统
HUE049173T2 (hu) 2016-04-08 2020-09-28 Husqvarna Ab Intelligens öntözõrendszer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1360225A (en) * 1972-10-19 1974-07-17 Distillers Co Carbon Dioxide Carbonated liquid moving apparatus
EP0314249A3 (fr) * 1987-10-28 1990-05-30 Shell Internationale Researchmaatschappij B.V. Commande d'un moteur pour l'arrêt d'une pompe lors d'un blocage par le gaz de pompes électriques submersibles
FR2860271B1 (fr) * 2003-09-30 2008-05-02 Realisations Electroniques Eur Dispositif de protection des pompes immergees

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WO2012003870A1 (fr) 2012-01-12
EP2591236A1 (fr) 2013-05-15

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