EP3559472B1 - Pompe à eau - Google Patents

Pompe à eau Download PDF

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Publication number
EP3559472B1
EP3559472B1 EP17828693.6A EP17828693A EP3559472B1 EP 3559472 B1 EP3559472 B1 EP 3559472B1 EP 17828693 A EP17828693 A EP 17828693A EP 3559472 B1 EP3559472 B1 EP 3559472B1
Authority
EP
European Patent Office
Prior art keywords
water pump
suction
pump according
housing
pressure
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
EP17828693.6A
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German (de)
English (en)
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EP3559472A1 (fr
Inventor
Franziska 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.)
Einhell Germany AG
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Einhell Germany AG
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Filing date
Publication date
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Publication of EP3559472A1 publication Critical patent/EP3559472A1/fr
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Publication of EP3559472B1 publication Critical patent/EP3559472B1/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
    • F04D15/0227—Lack of liquid level being detected using a flow transducer
    • 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
    • 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
    • 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
    • F04D15/0077—Safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • 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
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps

Definitions

  • the invention relates to a water pump, in particular a garden pump or a pump for a domestic water pump.
  • Water pumps are known from the general state of the art, which are designed to convey a liquid as centrifugal pumps or jet pumps. These are often equipped with a self-priming system, but with larger suction depths, a relatively long suction time is achieved.
  • Such water pumps are provided as portable or permanently installed pumps with an electronic control unit, typically used as garden pumps or as part of a domestic water pump in domestic waterworks.
  • a garden pump which is equipped with a controller so that when the pump is started up in the suction phase, after a running time of 60 seconds, a short pause of 4 seconds is programmed. This cycle can be repeated several times until the pump moves the water.
  • a garden pump arrangement is known with a pump driven by an electric drive motor and with a control device which contains a flow sensor and when the flow falls below the specified value a minimum flow rate through the pump outlet switches off the drive motor, a delay time being specified between falling below the minimum flow rate and the motor switching off. Since the delay time is at least 1.5 minutes and a user-actuable control element is available to switch on the drive motor after it has been switched off beforehand, regardless of the output pressure of the pump, no pressure sensor with a switch-on threshold is provided.
  • a liquid pump with a filter, a suction connection and a pressure connection is known, the suction connection and the pressure connection being arranged above and below a plane running through the center of gravity of the liquid pump and a window arranged on the filter housing enabling the degree of contamination of the filter to be assessed.
  • a water pump in particular a garden pump or a pump of a domestic water pump, which has a pump unit in a housing that can be driven by an electric motor and that can pump water as the delivery liquid from a suction line to a pressure line, the housing having a pump connected to the suction line Pump housing and a housing extension with the pressure line that is connected to the pump housing, the housing extension having a filter unit as a closure and an at least partially transparent window being arranged between the suction line and the pressure line, so that before the pump is operated, there is a liquid level inside of the housing on the pump housing can be read from the outside, and the filter unit has a suction indicator so that the presence of suction pressure in the pump housing can be identified via the suction indicator or a leak in the suction line.
  • a water pump is specified in which the filling of the suction line is indicated before start-up by an at least partially transparent window being arranged on the housing.
  • a user can therefore see that the suction line has been filled with the pumped liquid up to the prescribed liquid level.
  • the pump housings of prior art pumps are typically made of opaque materials, the user is not given any information as to whether or not water would be in the pump.
  • pumps can also be designed without a return valve in some applications and, moreover, are typically present with a completely emptied suction line when first installed, it is therefore for required for the safe operation of the water pump to carry out the installation steps according to the instructions in the user manual.
  • the invention now provides a remedy in that the liquid level inside the housing can be read from the outside via the partially transparent window, so that the user is informed whether installation measures may still have to be taken here.
  • This procedure significantly reduces the risk of the pump being operated contrary to the instructions in the operating manual. This is particularly important when the water pump has to suck in water from a lower level, typically two meters or more, since the suction pressure built up by the water pump is not sufficient here to fill the suction line. In addition to filling the suction line, the presence of suction pressure is also important for correct functioning.
  • the invention provides a suction indicator in the area of the filter unit.
  • a suction indicator in the area of the filter unit.
  • the pump when raising water from a low level, for example up to 8m, it may be necessary for the pump to run dry for an extended period of time in order to draw water from this area.
  • a user does not receive any information as to whether the suction process is taking place correctly. If, for example, there was a leak on the suction side, the pump would also run dry for a long time without sucking in water, so that it could only be switched off for a specific time window.
  • the suction display reliably signals from the outside that the suction process will be completed successfully without having to wait and see the result of the suction.
  • the water reservoir would have been correctly installed, since otherwise no intake pressure could be displayed.
  • an incomplete seal at the connection to the suction line could be a possible source of error.
  • the operational reliability of the water pump is therefore significantly improved by displaying the suction pressure on the filter cover via the suction display.
  • the suction indicator exerts pressure on a display element while liquid is being sucked in, so that the suction pressure can be seen on a filter cover.
  • the pressure can be exerted on the suction indicator via a membrane, which is held by a receptacle arranged on the side facing away from the filter cover.
  • a force can be applied to the membrane relative to the receptacle by means of a spring-elastic element, in particular a spiral spring or a spiral spring whose pretension can be adjusted.
  • a further suction indicator preferably arranged coaxially to the suction indicator.
  • variable as well as variable or multiple ranges of intake pressure can be displayed.
  • a corresponding presetting can be made at the factory by selecting the appropriate suction indicator.
  • the at least partially transparent window is arranged on the preferably cylindrical housing extension, whereby this can be done by providing the housing extension with a transparent window that is also slit-shaped, so that the The water level between the suction line and the pressure line can be read from the outside.
  • the at least partially transparent window is a component of the filter unit, which preferably functions as a filling opening.
  • the filter unit can typically also be used as a filling opening and thus forms the end of the housing extension
  • the transparent design of the housing means that both the correct filling of the suction line and any additional accumulation of material in the filter can be read from the outside at this point.
  • the filter unit has side walls which can be produced at least in sections, preferably completely, from an optically at least partially transparent material.
  • the aforementioned measures enable a high level of user comfort, in particular during maintenance or the commissioning of the water pump.
  • a liquid sensor both alternatively and additionally, instead of reading through the transparent window on the part of the user, which detects the liquid level in the area of the pump housing and signals it at the transparent window. Accordingly, the correct filling of the suction line is automatically displayed, with the transparent window in this case being the cover of a light-emitting diode, for example.
  • a coupling of the liquid sensor to a control unit, for example, a start-up could prevent non-filling is also provided within the scope of the invention.
  • a pressure sensor is arranged on the pressure line, which is connected to a control unit.
  • the combination of pressure sensor and control unit makes it possible in particular to detect pressure loss on the consumer side, so that in combination with a pressure reservoir, for example a water tank or the like, a domestic water automat can be created which only reacts to pressure loss on the consumer side with a delay. Furthermore, the pressure sensor can activate status displays via the control unit, which can display corresponding operating states of the water pump, for example in the form of LEDs.
  • a non-return valve is provided, which is part of the filter unit serving as a filling opening.
  • the liquid to be pumped is introduced via the filling opening on the water pump side.
  • the return valve is intended to prevent precisely this, so that it must be deactivated during commissioning if the pumped liquid is to be filled in above the return valve.
  • the return valve is part of the filling opening, the return valve is forcibly taken out of service by removing the filling opening.
  • a return valve which has an automatic vent.
  • the invention provides an automatic ventilation system here, which can, for example, divert the escaping air without the user having to do anything.
  • the return valve can have at least one passage which, when the return valve is closed, serves as a vent when the suction line is filled with pumped liquid, the at least one passage being closable via a sealing ring when the pump unit is activated.
  • the passage channel can be arranged on a valve plate of the return valve.
  • the sealing ring can be arranged with an overlying adjusting disk on the side of the pressure line so as to be displaceable under spring preload along a valve stem of the return valve.
  • the non-return valve can be integrated into the water pump, whereby the venting of the water pump when filling with water on the suction line side requires no manual intervention by providing passage channels on the valve disk, which are secured with a sealing washer and a support washer.
  • the pump When filling water into the suction line, the pump is depressurized so that the sealing ring leaves the passage channel open so that air can escape through the passage channels.
  • the size of the passage channels is selected in such a way that the water can flow into the suction line while the air can escape at the same time.
  • pressure builds up in the pressure chamber and the sealing disk closes.
  • the state of dry running is reliably detected, particularly in the case of a longer suction time due to water bubbles or increased water temperature, so that the control device can monitor safe pump operation with a corresponding time specification for the maximum dry running time present.
  • the switch is preferably activated magnetically, so that, for example, a REED switch or a Hall sensor can be used, which is actuated by means of a magnet arranged on the return valve.
  • the switch can also trigger a scalding protection, which is activated, for example, if the water pump is operated against a closed pressure line, the water inside the water pump then being heated by the pump unit.
  • a water pump according to the invention is shown in a perspective side view obliquely from above, with those components which are essential for explaining the invention. However, the other components necessary for the implementation of the invention are known to a person skilled in the art.
  • the water pump WP includes in the representation according to 1 a housing GE, which is formed from a pump housing PG and an adjoining cylindrical housing extension GF. There is a drain AB on the underside of the pump housing PG. A connection for a suction line SL is attached to the upper end of the cylindrically designed housing extension GF.
  • the pump unit driven by an electric motor (not in 1 shown) arranged.
  • the housing extension GF is completed by a filter unit FT, which has a filter cover FD on its upper side. Furthermore, the housing extension GF is connected to a connection for a pressure line DL, which can pass on the water sucked in via the suction line SL according to the application of the water pump. A transparent window (not in 1 shown) may be provided, which is particularly advantageous when the filter housing is made of non-transparent material.
  • the housing extension GF and the pump housing PG are typically also made of opaque plastic material or metallic materials.
  • a transparent window FE is provided according to the invention, which makes it possible to read the liquid level FL from the outside if the filling is correct.
  • the liquid level FL is signaled via a transparent window FE attached to the pump housing PG.
  • the correct filling with pumped liquid can not only be done with one Liquid level FL are displayed within the transparent window FE but generally also by completely covering the transparent window FE with pumped liquid, so that only the presence but not the exact level of the pumped liquid is displayed.
  • both are understood by the term liquid level FL.
  • a screw cap SD made of transparent material or with a transparent insert can also be provided.
  • the water pump WP draws in the pumped liquid from the suction line SL.
  • a suction indicator SA arranged in the filter cover FD, which is designed in the form of a pen, the suction indicator SA protruding from the filter cover FD before operation and being pushed into the filter cover FD during operation of the water pump WP.
  • a non-return valve may be fitted.
  • the outlet AB is provided so that the pumped liquid in the pressure line DL can drain off by making an opening.
  • FIG 2 Another embodiment of the water pump WP is with reference to FIG 2 shown.
  • the water pump WP in a perspective Side view shown toward a front.
  • the housing extension GF is provided with an elongated transparent window FE, via which the correct filling of the suction line SL at the water pump WP can be read using the liquid level FL.
  • FIG. 3 shows the pump in a perspective side view, in which case, in contrast to the previous embodiment, the housing of the filter unit FT consists of a transparent plastic material, so that the liquid level FL can be read within the side walls of the filter unit FT.
  • the filter unit FT has side walls which, at least in sections, but preferably completely, are made of an optically transparent material.
  • the filter unit FT has a filter cover FD which, according to further embodiments of the invention, can be equipped with a suction indicator SA.
  • the suction indicator SA is described in more detail below with reference to FIG Figures 4 to 8 described in several embodiments.
  • the filter cover FD is shown schematically in a perspective cross-sectional view. It can be seen that a membrane MB, which can exert a certain axial spring force, opens out into a seal DI so that a watertight seal is formed between a receptacle AU and the filter cover FD completion is possible.
  • the membrane MB is provided with the suction indicator SA, which can be routed to the outside through an opening in the filter cover FD, with the membrane MB corresponding to the suction indicator SA inward via a channel KA when there is pressure inside the filter unit FT pulls or pushes outwards without the presence of pressure. This makes it possible to detect the presence of a suction pressure inside the water pump via the suction indicator SA, which is designed as a pin-shaped display element, and to display this to a user.
  • FIG. 5 Another embodiment is in figure 5 shown in a cross-sectional view.
  • the seal DI is located within the channel KA on a cylindrical rod of the suction indicator SA.
  • the membrane MB is arranged together with the suction indicator SA between the mount AU and the filter cover FD.
  • the membrane MB is equipped with a corresponding axial spring force, with the presence of suction pressure also being able to ensure an axial displacement of the suction indicator SA through the filter cover FD, as described above.
  • FIG. 6 Another embodiment of a suction indicator SA is in 6 shown in a cross-sectional view.
  • the suction indicator SA is in turn connected to a membrane MB arranged on a receptacle AU, which is arranged underneath the filter cover FD, so that the suction indicator SA can penetrate the filter cover FD by axial displacement.
  • the suction indicator SA has according to FIG figure 5 transverse to the axial direction of larger external dimensions, so that the suction indicator SA is not only in the form of a pin-shaped display element but in the form of an enlarged touch surface on the filter cover FD.
  • a spiral spring SF is provided, which is connected via a spring plate FE to the suction indicator SA or the membrane MB.
  • the spring plate FE prevents the spiral spring SF from coming into contact with the membrane MB, which could possibly lead to damage or at least make assembly more difficult.
  • the channel KA is in turn arranged inside the spiral spring SF, so that with a corresponding suction pressure, an axial displacement of the suction indicator SA is possible.
  • the membrane MB is in accordance with the embodiment 6 now preloaded with the spiral spring SF, so that correspondingly higher suction pressure values can also be displayed.
  • the suction indicator SA can also be used to build up a pumping effect through rhythmic actuation and thereby manually generate suction pressure. This could be advantageous, for example, when the water pump WP is started up. The prerequisite for this is to install a non-return valve at the end of the suction line.
  • the spiral spring SF has a fixing means FM on the side opposite the membrane MB, so that the preload of the spiral spring SF can be adjusted via a spring plate FE' by axially adjusting the adjusting means FM.
  • the locking device FM In order not to impair the function, the locking device FM must also be connected to the channel KA in the axial direction. It is thus possible to carry out an adaptation of the suction indicator SA by adjusting the adjusting means FM when the water pump WP is installed at different heights in relation to the water level of the water to be pumped out.
  • the spring plate FE and the spring plate FE' only serve to mechanically protect adjacent components, in particular the membrane MB, although in other embodiments the suction indicator SA could also be provided without the spring plate FE.
  • the fixing means FM could also have corresponding area markings together with the mount AU, or it could be adjustable in discrete steps correspondingly marked on the mount AU, so that a user can set the functional area of the suction indicator SA to the appropriate installation height of the water pump WP in a controlled manner.
  • a third embodiment of a spring-loaded suction indicator SA is now shown.
  • the related 6 Suction indicator SA described is modified in such a way that it is designed as a hollow cylinder in the axial direction, so that another suction indicator SA' can be inserted coaxially into the interior of the suction indicator SA.
  • the further suction indicator SA' is in turn connected to a further membrane MB', which comes to lie below the receptacle AU in a further receptacle AU'.
  • the additional membrane MB' is also prestressed via a spiral spring SF', which is connected to the additional membrane MB' via a spring plate FE'.
  • Such an embodiment can be used, for example, to display two different pressure ranges, depending on the desired installation height of the water pump WP, by means of the suction indicators SA and SA′. If the water pump WP were installed at a first lower height, only the suction indicator SA would be drawn into the filter cover FD, since at this height the pressure in the suction line would not be high enough to prevent the suction indicator SA from lowering against the spiral spring SF'' to effect. At a second higher height of the water pump WP in relation to the water to be pumped out, the pressure is then high enough so that the additional suction indicator SA' is also drawn into the filter cover FD. About the spring constants of the spiral springs SF or SF', a range differentiation can be made at the factory. A means of determination FM, as in 7 shown, is not required here, but could be provided, for example, for the additional suction display SA', since this could be reached by a user from below.
  • the suction indicator SA and the additional suction indicator SA ⁇ allow the presence of a suction-side leak to be indicated, since the pin-shaped indicators cannot then be pulled into the filter cover FD. As already mentioned, this is advantageous during commissioning, particularly in the case of large installation heights.
  • the installation height can be up to 8m, with the two-part suction indicator according to 7 a division of up to 4 m for the first suction display SA and from 4 m for the second suction display SA' could be selected.
  • a further embodiment uses automatic venting for this purpose, with essential elements of such a return valve RV in the cross-sectional view according to FIG 9 are sketched.
  • the return valve RV includes a valve plate VT, which opens into a housing plate GP via a valve stem VS.
  • the housing plate GP is arranged on the housing GE.
  • the valve disk VT and the valve stem VS are arranged on the pressure side on the side of the pressure line DL and can be sealed against the suction side of the suction line SL by a sealing ring DR.
  • the valve stem VS is preloaded by a corresponding spiral spring SP, which is supported against the housing plate GP. Accordingly, because of the return valve RV, no water can flow back from the pressure line DL into the suction line SL.
  • the pump is depressurized, so that passage channels DK sealed by a corresponding sealing disk DS in the valve plate VT, which are also held by a lock washer SS, are open, so that water can be brought into the suction line SL via the passage channels DK , and air can escape from the suction line SL via the passage channels DK.
  • the sealing washer DS is arranged directly above the passage channels DK on the side of the pressure line DL and is covered by the locking washer SS.
  • a non-return valve RV is created which both prevents recirculation during normal operation and also enables automatic venting during start-up.
  • the return valve RV can also be supplemented with a switch ST, which can be used to detect dry running or overheating.
  • the valve plate VT is also included provided with a magnet holder MH, which can hold a magnet MT. Outside the line area is the switch ST, which as a REED switch or Hall sensor can detect the displacement of the magnet MT and thus forwards a signal to a control device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Plant Substances (AREA)

Claims (17)

  1. Pompe à eau, en particulier pompe de jardin ou pompe d'un automate à eau domestique, qui présente, dans un boîtier (GE), une unité de pompage pouvant être entraînée par un moteur électrique, laquelle peut pomper de l'eau d'une conduite d'aspiration (SL) vers un conduite de refoulement (DL) en tant que liquide de transport, le boîtier (GE) comprenant un boîtier de pompe (PG) et une extension de boîtier (GF) reliée au boîtier de pompe (PG) comprenant la conduite de pression (DL) et la conduite de refoulement (SL), l'extension de boîtier (GF) présentant une unité de filtrage (FT) comme terminaison, caractérisée en ce qu'une fenêtre au moins partiellement transparente (FE) est disposée entre la conduite d'aspiration (SL) et la conduite de refoulement (DL), de telle sorte qu'un niveau de liquide (FL) à l'intérieur du boîtier (GE) peut être lu de l'extérieur avant que la pompe (WP) ne soit actionnée (FL), et en ce que l'unité de filtrage (FT) présente un indicateur d'aspiration (SA) de telle sorte que la présence d'une pression d'aspiration dans le boîtier de pompe (PG) ou une fuite avant la conduite d'aspiration (SL) sont identifiables à l'aide de l'indicateur d'aspiration (SA).
  2. Pompe à eau selon la revendication 1, dans laquelle l'indicateur d'aspiration (SA) exerce une pression sur un élément indicateur disposé sur un couvercle de filtre (FD) lors de l'aspiration de liquide.
  3. Pompe à eau selon la revendication 2, dans laquelle la pression est exercée sur l'indicateur d'aspiration (SA) par l'intermédiaire d'une membrane (MB) qui est maintenue par un logement (AU) disposé du côté opposé au couvercle de filtre (FD).
  4. Pompe à eau selon la revendication 3, dans laquelle la membrane (MB) est soumise à une force par rapport au logement (AU) au moyen d'un élément élastique, en particulier un ressort spiral (SF) ou un ressort spiral (SF) dont la précontrainte est réglable au moyen d'un moyen de blocage (FM).
  5. Pompe à eau selon l'une quelconque des revendications 1 à 4, dans laquelle un autre affichage d'aspiration (SA'), de préférence disposé de manière coaxiale par rapport à l'affichage d'aspiration (SA), est prévu, lequel affiche une plus grande pression d'aspiration.
  6. Pompe à eau selon l'une quelconque des revendications 1 à 5, dans laquelle la fenêtre au moins partiellement transparente (FE) est disposée sur le boîtier de pompe (PG) ou sur l'extension de boîtier (GF), qui est de préférence de forme cylindrique.
  7. Pompe à eau selon la revendication 6, dans laquelle la fenêtre au moins partiellement transparente (FE) est un composant de l'unité de filtrage (FT) qui fonctionne de préférence comme une ouverture de remplissage.
  8. Pompe à eau selon la revendication 7, dans laquelle l'unité de filtrage (FT) présente des parois latérales qui sont fabriquées au moins par sections, de préférence complètement, en un matériau optiquement au moins partiellement transparent.
  9. Pompe à eau selon l'une quelconque des revendications 1 à 8, dans laquelle un capteur de liquide est prévu en alternative ou en plus, lequel détecte le niveau de liquide dans la zone de l'unité de pompage et le signale sur la fenêtre transparente (FE).
  10. Pompe à eau selon l'une quelconque des revendications 1 à 9, dans laquelle un capteur de pression qui est relié à une unité de commande est disposé sur la conduite de refoulement (DL).
  11. Pompe à eau selon l'une quelconque des revendications 1 à 10, dans laquelle un clapet anti-retour (RV) est prévu, lequel fait partie de l'unité de filtrage servant d'ouverture de remplissage.
  12. Pompe à eau selon l'une quelconque des revendications 1 à 11, dans laquelle un clapet anti-retour (RV) est prévu, lequel présente une ventilation automatique.
  13. Pompe à eau selon la revendication 12, dans laquelle le clapet anti-retour (RV) présente au moins un canal de passage (DK) qui, lorsque le clapet anti-retour (RV) est fermé, sert de ventilation lorsque la conduite d'aspiration (SL) est remplie de liquide de transport, l'au moins un canal de passage (DK) pouvant être fermé au moyen d'une bague d'étanchéité (DR) lorsque l'unité de pompage est activée.
  14. Pompe à eau selon la revendication 13, dans laquelle le canal de passage (DK) est disposé sur un disque de clapet (VT) du clapet anti-retour (RV) et la bague d'étanchéité (DR) est disposée avec un disque de réglage (SS) superposé sur le côté de la conduite de refoulement (DL) de manière à pouvoir être déplacée le long d'une tige (VS) du clapet anti-retour (RV) sous la précontrainte d'un ressort.
  15. Pompe à eau selon l'une quelconque des revendications 12 à 14, dans laquelle le clapet anti-retour (RV) actionne un commutateur (ST) qui délivre un signal à un dispositif de commande en cas de marche à sec.
  16. Pompe à eau selon la revendication 15, dans laquelle le commutateur (ST) est un commutateur magnétique, en particulier un commutateur REED ou un capteur Hall, qui peut être actionné au moyen d'un aimant disposé sur le clapet anti-retour.
  17. Pompe à eau selon l'une quelconque des revendications 15 ou 16, dans laquelle le commutateur (ST) déclenche en alternative ou en plus une sécurité anti-brûlures.
EP17828693.6A 2016-12-20 2017-12-15 Pompe à eau Active EP3559472B1 (fr)

Applications Claiming Priority (2)

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EP16205526.3A EP3339649A1 (fr) 2016-12-20 2016-12-20 Pompe à eau
PCT/EP2017/082980 WO2018114646A1 (fr) 2016-12-20 2017-12-15 Pompe à eau

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EP3559472A1 EP3559472A1 (fr) 2019-10-30
EP3559472B1 true EP3559472B1 (fr) 2023-03-01

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EP16205526.3A Withdrawn EP3339649A1 (fr) 2016-12-20 2016-12-20 Pompe à eau
EP17828693.6A Active EP3559472B1 (fr) 2016-12-20 2017-12-15 Pompe à eau

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US (1) US11118589B2 (fr)
EP (2) EP3339649A1 (fr)
CN (1) CN110226043B (fr)
AU (1) AU2017381473B2 (fr)
CA (1) CA3042337A1 (fr)
CL (1) CL2019001186A1 (fr)
ES (1) ES2944335T3 (fr)
FI (1) FI3559472T3 (fr)
PT (1) PT3559472T (fr)
WO (1) WO2018114646A1 (fr)

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EP3862570A1 (fr) * 2020-02-06 2021-08-11 Husqvarna Ab Pompe de jardin ayant un revêtement thermosensible
TWI738327B (zh) * 2020-05-11 2021-09-01 日益電機股份有限公司 具後蓋護罩防漏強化的罐裝磁力泵
CN113202786B (zh) * 2021-06-03 2022-02-11 浙江尔格科技股份有限公司 一种潜油泵转向识别结构

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US4985181A (en) * 1989-01-03 1991-01-15 Newa S.R.L. Centrifugal pump especially for aquariums
ES1019424Y (es) * 1991-11-13 1992-10-16 Doll, S.A. Prefiltro para instalaciones de piscinas.
DE10060998C1 (de) * 2000-12-08 2001-10-31 Braun Gmbh Ventil für einen Aufbewahrungsbehälter für Nahrungsmittel
US7328730B2 (en) * 2000-12-08 2008-02-12 Braun Gmbh Food storage containers
US8480373B2 (en) * 2004-08-26 2013-07-09 Pentair Water Pool And Spa, Inc. Filter loading
DE102005007265A1 (de) * 2004-09-21 2006-04-06 Micro-Epsilon Messtechnik Gmbh & Co Kg Vorrichtung und Verfahren zur Erfassung der Position und der Geschwindigkeit eines Messobjekts
US20060083630A1 (en) * 2004-10-19 2006-04-20 Yuan-Chen Chen Pump
CN2809277Y (zh) * 2005-02-01 2006-08-23 上海阿波罗机械制造有限公司 无密封自吸泵自动监控装置
DE102006023379B4 (de) * 2006-05-17 2013-10-02 Al-Ko Kober Ag Flüssigkeitspumpe
CA2685787A1 (fr) * 2008-11-18 2010-05-18 William J. Lund Systeme et procede de distribution d'eau chaude sur demannde
DE102010026474A1 (de) 2010-07-07 2012-01-12 Gardena Manufacturing Gmbh Gartenpumpenanordnung mit Durchflusssensor
DE102013106970A1 (de) 2013-07-03 2015-01-22 Leo Gruppe Gmbh Gartenpumpe mit verbessertem Ansaugverhalten
DE202015003085U1 (de) * 2015-04-29 2016-08-03 Speck Pumpen Verkaufsgesellschaft Gmbh Schmutzfänger für Förderpumpe mit beleuchtbarer Filtereinheit

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Publication number Publication date
EP3339649A1 (fr) 2018-06-27
ES2944335T3 (es) 2023-06-20
CN110226043B (zh) 2021-11-16
CL2019001186A1 (es) 2019-09-27
EP3559472A1 (fr) 2019-10-30
FI3559472T3 (fi) 2023-05-09
US11118589B2 (en) 2021-09-14
PT3559472T (pt) 2023-05-22
AU2017381473B2 (en) 2023-09-21
CN110226043A (zh) 2019-09-10
US20190257313A1 (en) 2019-08-22
WO2018114646A1 (fr) 2018-06-28
CA3042337A1 (fr) 2018-06-28
AU2017381473A1 (en) 2019-05-30

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