EP3765748B1 - Groupe pompe centrifuge et procédé pour déplacer une valve dans un tel groupe pompe centrifuge - Google Patents

Groupe pompe centrifuge et procédé pour déplacer une valve dans un tel groupe pompe centrifuge Download PDF

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Publication number
EP3765748B1
EP3765748B1 EP19710409.4A EP19710409A EP3765748B1 EP 3765748 B1 EP3765748 B1 EP 3765748B1 EP 19710409 A EP19710409 A EP 19710409A EP 3765748 B1 EP3765748 B1 EP 3765748B1
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EP
European Patent Office
Prior art keywords
valve element
drive motor
impeller
switching
switching position
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
EP19710409.4A
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German (de)
English (en)
Other versions
EP3765748C0 (fr
EP3765748A1 (fr
Inventor
Thomas Blad
Christian BLAD
Peter Mønster
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 Holdings AS
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Grundfos Holdings AS
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Publication date
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Publication of EP3765748A1 publication Critical patent/EP3765748A1/fr
Application granted granted Critical
Publication of EP3765748C0 publication Critical patent/EP3765748C0/fr
Publication of EP3765748B1 publication Critical patent/EP3765748B1/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
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0016—Control, e.g. regulation, of pumps, pumping installations or systems by using valves mixing-reversing- or deviation valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • 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
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • 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
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening
    • 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
    • F04D15/0027—Varying behaviour or the very pump
    • F04D15/0038—Varying behaviour or the very pump by varying the effective cross-sectional area of flow through the rotor
    • 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
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4293—Details of fluid inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/48—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps
    • F04D29/486—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/105—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system pumps combined with multiple way valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/501—Elasticity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/0207—Pumps

Definitions

  • Centrifugal pump units such as those used as heating circulation pumps, usually have an electric drive motor and an impeller driven by the impeller, which rotates in a pump housing. It is also known to integrate a valve element directly into the pump housing, which makes it possible to switch the flow through the pump unit, which is generated by the impeller, between two flow paths. For this purpose, it is known to move such valve elements depending on the direction of rotation of the impeller through the flow caused by the impeller. The disadvantage of these arrangements is that a drive motor must be present, which can be driven in two directions of rotation. This requires appropriate control electronics to control the drive motor.
  • US 2017/0356449 A1 discloses a hydraulic system with two branches and a valve device for switching the flow between the branches.
  • the centrifugal pump unit according to the invention which can particularly preferably be designed as a heating circulation pump unit, has an electric drive motor and an impeller driven by it.
  • the impeller is arranged in a pump housing, in which a movable valve element is also arranged.
  • the valve element is arranged in the pump housing in such a way that it can be moved between two switching positions by a flow generated by the impeller, i.e. a flow of the pumped liquid.
  • the valve element is designed in such a way that at least a section of the valve element can be moved from a released position to a resting position in which it is fixed to a contact surface by a pressure or fluid pressure generated by the impeller in the pump housing.
  • the contact surface can particularly preferably be an inner surface of the pump housing.
  • valve element and the contact surface are thus expediently designed in such a way that in the abutting position the valve element is prevented from moving between the switching positions by the fixation or contact of at least one section of the valve element on the contact surface.
  • the valve element cannot move between the switching positions due to the flow generated by the impeller. Rather, it is held securely on the contact surface in the previously assumed position by the prevailing pressure.
  • the valve element is in the released position, it is no longer on the contact surface. fixed and can be moved between the switching positions. This means that in the extinguished position it can be moved by the flow generated by the impeller.
  • the fixation of the valve element is controlled as a function of pressure, while the movement is caused by the flow.
  • the centrifugal pump unit according to the invention also has a control device which serves to control the switching process of the valve element between the switching positions mentioned.
  • the control device is designed in such a way that it reduces the speed of the drive motor in order to move the valve element from one switching position to another switching position and increases the speed of the drive motor again at a point in time when the pressure in the pump housing has dropped so far that the valve element is no longer fixed to the contact surface and the valve element has been moved to the other switching position.
  • This point in time can be determined or recorded in various ways, as explained below. For example, the point in time can be determined or recorded by a time control or by recording the actual switching position.
  • a reduction in the speed can mean that the speed is only reduced to a lower speed and the pump unit continues to run at this lower speed.
  • the lower speed is a speed at which the impeller generates a pressure on the output side that is below a limit pressure at which the valve element can be moved into its closed position by the pressure. This means that the speed is so low that the valve element or the section of the valve element remains in the released position.
  • the drive motor is controlled by the control device in such a way that the drive motor is operated at a speed at which the pressure on the output side of the impeller is so high that the valve element in the adjacent position is held by the pressure.
  • control device and the drive motor are designed so that the drive motor reaches a sufficiently high speed when switched on so quickly that a pressure high enough to hold the valve element in the adjacent position is immediately achieved before a flow is built up which could move the valve element out of the current switching position.
  • a corresponding coordination of the drive motor, control device and valve element is preferably selected.
  • the control device is designed such that, in order to move the valve element from one switching position to another switching position, it reduces the speed of the drive motor to zero, i.e. it switches off the drive motor, and then or at a time when the pressure in the pump housing has dropped so far that the valve element is no longer fixed to the contact surface and the valve element has been moved to the other switching position, it switches the drive motor back on, i.e. it increases the speed of the drive motor again, in particular increases it to the normal operating speed.
  • This design variant exploits the fact that the liquid in the peripheral area of the impeller and/or in a connected circuit continues to flow in a circle for a certain time due to its inertia even after the drive motor has been switched off, whereby the flow can move the valve element when it runs out.
  • valve element is particularly preferably designed such that in a first switching position it opens a flow path through a first connection and in a second switching position it opens a flow path through a second connection.
  • first switching position the flow path through the second connection is preferably closed, while in the second switching position the flow path through the first connection is closed.
  • the valve element particularly preferably has a reset means or reset element.
  • a reset means can be designed, for example, in the form of a spring, a magnet and/or a weight.
  • the reset means is preferably designed such that it moves the valve element into a predetermined switching position when the impeller is at a standstill and no flow is acting on the valve element. This can be the first switching position, for example.
  • Such a reset means ensures that when the drive motor is switched off and the valve element has moved into its released position, the valve element always moves automatically due to the reset means into a predetermined starting position, namely the aforementioned predetermined switching position. This means that even if the drive motor can only be driven in one direction of rotation, the valve element can still be moved back in the opposite direction of rotation.
  • a force generating means preferably a spring, which applies force to the valve element or at least a portion thereof from the applied position into the released position.
  • the force generating means thus causes the valve element to be moved back into the released position when the pressure in the area surrounding the impeller is reduced. If the pressure generated by the impeller and acting on the valve element exceeds a limit value at which the force of the force generating means is overcome, the valve element is moved into the applied position against the force of the force generating means. This creates an automatically releasing Coupling is created between the valve element and a contact surface.
  • an elastic restoring force which is generated in the section itself can also serve as a force generating means which moves the valve element back to its starting position.
  • the force generating means and the drive motor are preferably coordinated with one another.
  • the drive motor preferably has a correspondingly adapted start-up behavior in order to be able to achieve this pressure in the manner described above so quickly that sufficient flow does not yet build up to move the valve element into another switching position.
  • the force generating means in particular a spring, is designed in such a way that it applies a sufficiently large force to move the valve element back into its released position as quickly as possible when the pressure drops and to ensure that the valve element can move between the switching positions in this position.
  • the control device has at least one signal input or a sensor from which the control device can receive at least one switching signal. Furthermore, the control device is preferably designed such that, upon receipt of the switching signal, it controls the drive motor such that the valve element is moved from one switching position to the other switching position. The control device is particularly preferably designed such that it then switches the drive motor off and on again for the aforementioned time periods in order to achieve the desired switching position.
  • the signal input can be wired or wireless, for example as a radio interface.
  • a signal cable can be led through a suitable opening or via a suitable connector into the interior of an electronics housing in which the control electronics are arranged.
  • a signal cable could particularly preferably be led through the same opening through which an electrical connection cable is led into the electronics housing or a terminal box.
  • this sensor can be designed to detect an event such as a flow in a line, on the basis of which a switching of the switching position is desired. This is the case, for example, in heating systems in which, in addition to building temperature control, the heating of domestic water is also to be achieved. If a domestic water flow is detected in such a heating system, a switching valve, for example the valve element according to the invention, must be switched in order to open a flow path through a heat exchanger for heating the domestic water.
  • the control device can be arranged in an electronics housing and a sensor for generating the switching signal can be arranged in the electronics housing, wherein the sensor is a magnetic sensor which can detect the displacement of a magnetic field generated outside the electronics housing.
  • the sensor is a magnetic sensor which can detect the displacement of a magnetic field generated outside the electronics housing.
  • a flow sensor which has a moving magnet can be placed directly near the electronics housing or terminal box so that a movement of the magnet can be detected by the magnetic sensor. In this way, contactless signal transmission into the interior of the electronics housing can be achieved.
  • a conventional electronics housing or a conventional terminal box can be used which does not require an additional opening to receive the signal from a flow sensor. to a control device arranged inside the electronics housing.
  • the bearing sleeve 34 can slide on the bearing bolt 46 in addition to the rotary movement in the longitudinal direction X when the valve element 24 is released from the Fig.7 shown released position into the Fig.6 shown adjacent position.
  • the mounting of the bearing sleeve 34 on the bearing bolt 46 thus allows both a rotary movement and an axial movement in this embodiment.
  • valve element 24 can, as stated, perform an axial movement along the longitudinal axis X, as in Fig.6 and 7 shown.
  • Fig.6 the valve element 24 is in a resting position in which it is pressed into contact with the pump housing 2 by the outlet-side pressure generated by the impeller 14.
  • the pressure generated by the impeller 14 acts on the surface of the cover 30 facing the impeller.
  • the suction-side pressure of the circulation pump unit acts on the back of the cover 30 inside the valve element 24.
  • the lower part 28 comes into tight contact with an annular shoulder 60 inside the pump housing.
  • the spring 36 and the drive motor are coordinated with one another in such a way that the drive motor generates a pressure which makes it possible to use the force of the spring 36 to move the valve element 24.
  • the spring is dimensioned so that when the pressure falls below a certain limit, it pushes the valve element 34 into the Fig.6 shown released position can move.
  • the control electronics 64 switches the drive motor off for a second longer period of time. This period of time is selected so that not only the pressure in the area surrounding the impeller 14 is reduced, but also the ring flow decreases to such an extent that the torque caused by the weight 54 increases and the valve element 24 can turn back into the first switching position.
  • the drive motor can then be started up again in such a way that the immediate pressure build-up holds the valve element 24 in this switching position.
  • the control device can also select a pure time control for this switching process. Alternatively, it is also possible here to actually record the switching position of the valve element 24.
  • the control electronics 64 has a magnetic sensor 66 located near the outer wall of the terminal box 16. This can generate a signal that causes the control electronics 64 to switch the switching positions.
  • a tube element 68 is arranged on the outside of the terminal box 16 near the wall on which the magnetic sensor 66 is located, in which a movable sensor body 70 is arranged to detect a flow. If no flow passes through the tube element 68, the sensor body 70 is held, for example by a spring element, in the Fig.9 A magnet 72 is arranged in the sensor body 70. In the position shown in Fig.9 In the rest position shown, the magnet 70 is not opposite the magnetic sensor 66, which can be a reed contact, for example.
  • switching is carried out via the valve element on the suction side of the impeller 14.
  • switching can also be carried out on the pressure side in a corresponding manner.
  • Fig. 13 shown.
  • the pump housing 2' has two pressure connections 22' and only one suction connection 18'.
  • the valve element 24' is pot-shaped and surrounds the impeller 14, so that the flow generated by the impeller 14 and the pressure generated by the impeller 14 act inside the valve element 24'.
  • the valve element 24' has an inlet connection 32' inside which, as described above, engages with the suction mouth of the impeller 14.
  • a weight 54' is again arranged in the valve element 24'.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Claims (14)

  1. Ensemble de pompe centrifuge avec un moteur d'entraînement électrique (6, 8), une roue (14) entraînée par celui-ci ainsi qu'un corps de pompe (2) entourant la roue (14), dans lequel est disposé et logé pouvant tourner un élément de clapet mobile (24, 24') de telle manière que l'élément de clapet (24, 24') peut être déplacé en rotation entre deux positions de fonctionnement par un flux produit par la roue (14) et qu'au moins une section de l'élément de clapet (24, 24') peut être déplacée par une pression produite par la roue (14) dans le corps de pompe d'une position débloquée à une position appliquée dans laquelle il est fixé à une surface d'appui (60) caractérisé par un système de commande (64), lequel est constitué de sorte qu'il réduit le régime du moteur d'entraînement (6, 8) pour déplacer l'élément de clapet (24, 24') d'une position de fonctionnement à une autre position de fonctionnement et ensuite, lorsque la pression est baissée dans le corps de pompe (2) tant que l'élément de clapet (24, 24') n'est plus fixé à la surface d'appui (60) et l'élément de clapet (24, 24') a été déplacé dans l'autre position de fonctionnement, le régime du moteur d'entraînement (6, 8) augmente à nouveau de telle manière que la pression de la roue (14) côté sortie est si haute que l'élément de clapet (24, 24') est maintenu par la pression dans la position appliquée, sachant que le système de commande (64) et le moteur d'entraînement (6, 8) sont constitués de telle manière que le moteur d'entraînement (6, 8) ne peut être actionné que dans une direction de rotation (A) prédéfinie.
  2. Ensemble de pompe centrifuge selon la revendication 1, caractérisé en ce que l'élément de clapet (24, 24') et la surface d'appui (60) sont configurés de telle manière que dans la position appliquée, un déplacement entre les positions de fonctionnement est évité à l'élément de clapet (24, 24') par la fixation à la surface d'appui (60) et dans la position débloquée, l'élément de clapet peut être déplacé entre les positions de fonctionnement.
  3. Ensemble de pompe centrifuge selon la revendication 1 ou 2, caractérisé en ce que le système de commande (64) est constitué de telle manière qu'il arrête le moteur d'entraînement (6, 8) pour déplacer l'élément de clapet (24, 24') d'une position de fonctionnement à une autre position de fonctionnement et ensuite, lorsque la pression dans le corps de pompe (2) est baissée au point que l'élément de clapet (24, 24') n'est plus fixé à la surface d'appui (60) et l'élément de clapet (24, 24') a été déplacé dans l'autre position de fonctionnement, le moteur d'entraînement (6, 8) est à nouveau mis en marche.
  4. Ensemble de pompe centrifuge selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le système de commande (64) est constitué de telle manière que le régime du moteur d'entraînement (6, 8) augmente à nouveau après un laps de temps prédéterminé et/ou en ce qu'un capteur de position est présent, lequel saisit la position de fonctionnement de l'élément de clapet (24, 24') et est relié par signal au système de commande (64) et le système de commande (64) est constitué de telle manière qu'il augmente à nouveau le régime du moteur d'entraînement (6, 8), lorsque le capteur de position signale que l'autre position de fonctionnement est atteinte.
  5. Ensemble de pompe centrifuge selon l'une quelconque des revendications précédentes, caractérisé en ce que le moteur d'entraînement (6, 8) et le système de commande (64) sont constitués de telle manière que lors de l'enclenchement du moteur d'entraînement (6, 8), la roue (14) produit une pression suffisante pour déplacer la section de l'élément de clapet (24, 24') dans la position d'application plus rapidement qu'un flux pour déplacer l'élément de clapet (24, 24') dans une autre position de fonctionnement et/ou en ce que le moteur d'entraînement (6, 8) et le système de commande (64) sont constitués de telle manière que la pression maintenant la section de l'élément de clapet (24, 24') dans la position appliquée se réduit lors de l'arrêt du moteur d'entraînement (6, 8) plus rapidement qu'un flux pour déplacer l'élément de clapet (24, 24') dans l'autre position de fonctionnement.
  6. Ensemble de pompe centrifuge selon l'une quelconque des revendications précédentes, caractérisé en ce que le système de commande (64) est constitué de telle manière qu'il arrête le moteur d'entraînement (6, 8) pendant un premier laps de temps prédéterminé pour inverser l'élément de clapet (24, 24') d'une première position de fonctionnement à une deuxième et arrête le moteur d'entraînement (6, 8) pendant un deuxième laps de temps prédéterminé pour inverser de la deuxième à la première position de fonctionnement, lequel est plus long que le premier laps de temps.
  7. Ensemble de pompe centrifuge selon l'une quelconque des revendications précédentes, caractérisé en ce que le système de commande (64) et le moteur d'entraînement (6, 8) sont constitués pour faire fonctionner le moteur d'entraînement (6, 8) sans réglage de régime, sachant que le moteur d'entraînement (6, 8) est de préférence un moteur asynchrone.
  8. Ensemble de pompe centrifuge selon l'une quelconque des revendications précédentes, caractérisée en ce que le corps de pompe (2) comporte au moins un raccord, de préférence au moins deux raccords (18, 20) et l'élément de clapet (24) est constitué de telle manière qu'il ouvre largement de façon différente au moins une voie d'écoulement dans au moins deux de ses positions de fonctionnement par au moins un raccord (18, 20) et qu'il libère de préférence dans une première position de fonctionnement une voie d'écoulement par un premier raccord (18) et une voie d'écoulement dans une deuxième position de fonctionnement par un deuxième raccord (20).
  9. Ensemble de pompe centrifuge selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de clapet (24, 24') est logé pouvant tourner dans le corps de pompe (2) autour d'un axe de rotation (X), lequel s'étend parallèlement et de préférence en alignement par rapport à un axe de rotation (X) de la roue (14).
  10. Ensemble de pompe centrifuge selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de clapet (24, 24') comporte au moins une surface d'attaque de flux (30) sur laquelle agit le flux produit par la roue (14) pour le déplacement de l'élément de clapet (24, 24'), sachant que la surface d'attaque de flux (30) limite de préférence un espace de flux entourant la roue (14).
  11. Ensemble de pompe centrifuge selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de clapet (24, 24') comporte un moyen de rappel (54) de préférence sous la forme d'un ressort, d'un aimant et/ou d'un poids (54), lequel est constitué de telle manière qu'il déplace l'élément de clapet (24, 24') dans une position de fonctionnement prédéterminée lors de l'arrêt de la roue (14), lorsqu'aucun flux n'agit sur l'élément de clapet (24, 24').
  12. Ensemble de pompe centrifuge selon l'une quelconque des revendications précédentes, caractérisé par un moyen de production de force (36), de préférence un ressort (36), lequel applique une force à l'élément de clapet (24, 24') ou à au moins une section de celui-ci de la position appliquée à la position débloquée.
  13. Procédé destiné à déplacer un élément de clapet (24, 24') disposé dans un ensemble de pompe centrifuge, sachant que l'ensemble de pompe centrifuge comporte une roue entraînée par un moteur d'entraînement électrique, le moteur d'entraînement ne peut être actionné que dans une direction de rotation attribuée et l'élément de clapet est disposé et constitué de telle manière qu'il peut être déplacé par un flux produit par une roue (14) de l'ensemble de pompe centrifuge par rotation de l'élément de clapet (24, 24') d'une première position de fonctionnement à une deuxième position de fonctionnement et qu'au moins une section de l'élément de clapet (24, 24') peut être déplacée par une pression produite par la roue (14) d'une position débloquée à une position appliquée dans laquelle il est fixé à une surface d'appui (60), avec les étapes suivantes :
    - réduction du régime ou arrêt du moteur d'entraînement (6, 8), la pression étant réduite de ce fait côté sortie de la roue (14) dans la mesure où l'élément de clapet (24, 24') ou au moins une section de l'élément de clapet (24, 24') parvient dans la position débloquée et l'élément de clapet (24, 24') est déplacé de la première à la deuxième position de fonctionnement par rotation par le flux produit par la roue (14),
    - augmentation du régime ou mise en marche du moteur d'entraînement (6, 8) de telle sorte que la pression côté sortie de la roue (14) est augmentée de telle manière que l'élément de clapet (24, 24') ou au moins une section de celui-ci soit déplacé(e) dans la position appliquée et y soit fixé(e) par la pression.
  14. Procédé selon la revendication 13, caractérisé en ce que pour déplacer l'élément de clapet de la deuxième à la première position de fonctionnement, le moteur d'entraînement (6, 8) est arrêté jusqu'à ce que le flux du côté sortie de la roue (14) soit ralenti de telle manière que l'élément de clapet (24, 24') revient dans la première position de fonctionnement par un élément de rappel (54) et qu'ensuite le moteur d'entraînement (6, 8) est remis en marche de telle manière que du côté sortie de la roue (24) une pression s'établit, laquelle déplace dans la position de retenue l'élément de clapet (24, 24') ou au moins une section de celui-ci avant qu'un flux s'établisse, lequel déplacerait l'élément de clapet (24, 24') dans la deuxième position de fonctionnement.
EP19710409.4A 2018-03-13 2019-03-12 Groupe pompe centrifuge et procédé pour déplacer une valve dans un tel groupe pompe centrifuge Active EP3765748B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18161525.3A EP3540234A1 (fr) 2018-03-13 2018-03-13 Groupe pompe centrifuge et procédé pour déplacer une valve dans un groupe pompe centrifuge
PCT/EP2019/056081 WO2019175135A1 (fr) 2018-03-13 2019-03-12 Unité de pompe centrifuge et procédé de déplacement d'un élément de soupape dans une telle unité de pompe centrifuge

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EP3765748A1 EP3765748A1 (fr) 2021-01-20
EP3765748C0 EP3765748C0 (fr) 2024-07-03
EP3765748B1 true EP3765748B1 (fr) 2024-07-03

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EP18161525.3A Withdrawn EP3540234A1 (fr) 2018-03-13 2018-03-13 Groupe pompe centrifuge et procédé pour déplacer une valve dans un groupe pompe centrifuge
EP19710409.4A Active EP3765748B1 (fr) 2018-03-13 2019-03-12 Groupe pompe centrifuge et procédé pour déplacer une valve dans un tel groupe pompe centrifuge

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EP (2) EP3540234A1 (fr)
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Publication number Priority date Publication date Assignee Title
EP3904689A1 (fr) * 2020-04-28 2021-11-03 Grundfos Holding A/S Ensemble pompe centrifuge
EP3904738A1 (fr) * 2020-04-28 2021-11-03 Grundfos Holding A/S Dispositif de soupape hydraulique et ensemble e pompe centrifuge comprenant un tel dispositif de soupape hydraulique
KR102525194B1 (ko) * 2021-02-09 2023-05-08 지엠비코리아 주식회사 워터펌프 및 밸브 통합장치
US12297843B2 (en) * 2022-06-08 2025-05-13 Cooper-Standard Automotive Inc. Multiport fluid pump with integrated valve
USD1102484S1 (en) * 2023-09-27 2025-11-18 Fujian Snowman Compressor Co., Ltd Centrifugal compressor

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US1955549A (en) * 1931-08-21 1934-04-17 John T Janette Combined pump and valve
DE9013992U1 (de) * 1990-10-08 1991-10-24 Grundfos International A/S, Bjerringbro Motorpumpenaggregat für Kreislaufsysteme mit zwei parallelen Kreisläufen
DE4418153A1 (de) * 1994-05-25 1995-11-30 Wilo Gmbh Kreiselpumpe
US5924432A (en) * 1995-10-17 1999-07-20 Whirlpool Corporation Dishwasher having a wash liquid recirculation system
DE10133130A1 (de) * 2001-07-07 2003-01-16 Miele & Cie Umwälzpumpe mit/ohne Heizungseinrichtung
ES2224816B1 (es) * 2002-10-15 2008-06-01 Fagor, S. Coop. Bomba hidraulica bidireccional.
CN105745450B (zh) * 2013-11-16 2017-10-24 博泽沃尔兹堡汽车零部件有限公司 电动冷却剂泵
EP3037669B1 (fr) * 2014-12-22 2019-07-24 Grundfos Holding A/S Système hydraulique
EP3376036A1 (fr) * 2017-03-14 2018-09-19 Grundfos Holding A/S Groupe motopompe

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WO2019175135A1 (fr) 2019-09-19
US20210010477A1 (en) 2021-01-14
EP3540234A1 (fr) 2019-09-18
EP3765748C0 (fr) 2024-07-03
US11680571B2 (en) 2023-06-20
EP3765748A1 (fr) 2021-01-20
CN111919030A (zh) 2020-11-10
CN111919030B (zh) 2022-12-02

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