EP3091234A1 - Submersible pump - Google Patents

Submersible pump Download PDF

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Publication number
EP3091234A1
EP3091234A1 EP16166529.4A EP16166529A EP3091234A1 EP 3091234 A1 EP3091234 A1 EP 3091234A1 EP 16166529 A EP16166529 A EP 16166529A EP 3091234 A1 EP3091234 A1 EP 3091234A1
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EP
European Patent Office
Prior art keywords
pump
main body
water
pump main
water level
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Granted
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EP16166529.4A
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German (de)
French (fr)
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EP3091234B1 (en
Inventor
Junbo Zhang
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Einhell Germany AG
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Einhell Germany AG
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    • 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
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • 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

Definitions

  • the present utility model relates to a water pump, in particular it relates to a submersible pump.
  • the submerged pump includes a pump main body, wherein the pump main body can be immersed in the liquid to be pumped out and has a suction port, thus, the liquid can be sucked by the pressurized submerged pump and exit through the pressure discharge port.
  • a compression line for example a pressure line, may be connected.
  • a sensor unit On the outside of the pump main body, a sensor unit is arranged, this sensor unit is coupled to a arranged in the pump main body control unit, with their help, the pump can be turned on and off according to the filling level of the liquid surrounding the pump. For example, it can be provided that when the liquid surrounding the pump reaches the filling level predetermined by the position of the sensor unit, the pump is switched on, and when the filling level drops below the level of the sensor unit, the submersible pump is switched off with a delay.
  • Such a submersible pump is already known from the patent document 200780006651.X published as a utility model Chinese patent document, the patent document discloses a submersible pump having a pump housing, wherein the pump housing can be immersed in the liquid to be pumped out and having a suction port and a pressure outlet opening, thereby For example, the liquid may be sucked into the pump housing through the suction port and be discharged under pressure through the discharge port, and there is an electronic control device, wherein the electronic control device is coupled to a sensor unit disposed on the outside of the housing, and used to adjust the level of fill level the liquid surrounding the pump to turn the submersible pump on and off; wherein the sensor unit is held as a structural unit, which is adjustable in height on the pump housing, is constructed, the sensor unit comprises a sensor housing, wherein in the interior of the sensor housing two spaced-apart, wetted with liquid electrodes are arranged and a sensor holder is arranged on the outer wall of the pump housing, the sensor unit can be connected to the sensor
  • the aim of the present utility model is to provide a submersible pump which solves the deficiencies of the prior art described above, the height control of the sensor unit of the present submersible pump is relatively straightforward.
  • the submersible pump according to the present invention comprises a pump main body and a water level switch; wherein the water level switch substantially at least two sensor units, which are arranged spaced in the vertical direction on the pump main body and all of which can be sufficiently touched by the water; and a control circuit unit that controls the turning on and off of the pump main body by receiving a water signal emitted from an arbitrarily set sensor unit.
  • the plurality of sensor units in the pump main body in the vertical direction make an arrayed arrangement, and there is a fixed height difference between each sensor unit. Therefore, when initially set arbitrarily, that a sensor is operated when the level of the water environment in which the submersible pump operated, rises above the specified sensor unit, the sensor unit receiving a sufficient amount of water signal, and thus control that the water pump automatically turns on and maintains this on status until the level drops below the above-defined sensor unit.
  • the multiple sensor units in which different heights can be set independently from each other the fact that the submersible pump can be operated in the automatic control status to trigger the height control of the water level only by selecting different height positions of the sensor unit
  • the entire structure of the sensor unit and the structure of the height control are relatively straightforward, the operational stability is high.
  • the at least two sensor units described above relate to N water level sensors in electrode form, and N ⁇ 2; wherein the control circuit element is a water pump drive circuit that receives a water signal and drives the operation of the pump main body; the N water level sensors in the form of electrodes spaced apart in the vertical direction are arranged one behind the other independently of one another on the pump main body, and are connected together by means of a multistage switch to the water pump drive circuit by means of a signal.
  • water level sensors in electrode form are directly selected by those skilled in the art.
  • the water level sensors in electrode form can measure the level of the water environment in which the pump is operated , and thus implement an automatic control of the submersible pump.
  • the choice of concrete water level sensor is implemented in the form of electrodes by means of a multi-stage switch.
  • the implementation structure of the entire preferred technical concept is straightforward and the production costs are comparatively low.
  • the at least two sensor units relate to N series resistive resistors and N + 1 conductive electrodes, the N resistors and N + 1 conductive electrodes being spaced apart and N ⁇ 2;
  • the control circuit element is an integrated chip which, according to the total resistance value of the series branches of the N Resistors controls the turning on and off of the pump main body;
  • the series branches of the N resistors with the integrated chip make a signal connection, and form a circuit, and the integrated circuit further a multi-stage switch is electrically connected, which is used to set the resistance value, with which the integrated circuit controls the switching on and off of the pump main body ,
  • control circuit element is an integrated chip which controls, in accordance with the total resistance value of the series branches of the N resistors, the turn-on and turn-off of the pump main body; wherein it can control the instantaneous on and off or delayed on and off of the pump main body by means of the change of the total resistance value at the series branch of the N resistors.
  • the at least two sensor units refer to N series resistive N resistors and N + 1 conductive electrodes, the N resistors and N + 1 conductive electrodes being respectively spaced, and the two ends of the resistors a pair of conductive electrodes each protrude on the series branches, as soon as the conductive pair of electrodes corresponding to each resistor is immersed in the water environment in which the submersible pump is operated, a short circuit can be obtained in the resistor corresponding to the electrodes, which changes the total resistance across the entire series branches generated.
  • the embodiment described above can give a feedback to the integrated chip in a concrete change in the level height during operation of the submersible pump in the water environment by means of a change in the total resistance value of the series branches on the submersible pump.
  • the user can use the multistage switch to preset the resistance value for the automatic switching on and off of the submersible pump provided in the present application, if a change occurs at the level of the submersible pump environment, controls as soon as the actual total resistance value of the oak branch reaches or falls below the set resistance value Control circuit unit, the operating recording of the submersible pump, otherwise the pump then stops the operation.
  • the entire preferred technical concept does not concern any electronic sensor elements, which lowers the manufacturing costs sufficiently.
  • the structure of the sensor unit on the pump main body is uncomplicated and the operational stability is high; At the same time there are a number of advantages such as comparatively low production costs and good economy.
  • pump main body 1 sensor unit 2, multistage switch 3, control circuit element 4, upper conductive electrode 5, middle conductive electrode 6, first common conductive electrode 7, second common conductive electrode 8, water pump electric motor 9.
  • the submersible pump comprises a pump main body 1, a sensor unit 2 is arranged on the pump housing of the pump main body 1, the sensor unit 2 consists of three water level sensors in electrode form A, B, C, the three water level sensors in electrode form are spaced one behind the other in the vertical direction arranged in a row, and there is a fixed height difference between them;
  • the control circuit element 4 of the pump main body 1 is a simple one Water signal receiving water pump drive circuit;
  • the three water level sensors in electrode form A, B, C are connected together by means of a four-stage multi-stage switch 3 with a water pump drive circuit acting as a control circuit element 4 of the water pump by signal.
  • the above-described multi-stage switch 3 preselects that any one of the three water level sensors is operated in electrode form A, B, C, for example, it is determined that the water level sensor is operated in electrode form A when the level of the water environment in which operating the submersible pump above the above-described water level sensor in electrode form A, so that the water level sensor in electrode form A is completely immersed in the liquid, and the water pump drive circuit described above from the water level sensor in electrode form A has received as a feedback the signal that water is present, the control is made that the water pump electric motor 9 is put into operation in the pump main body 1 and this operating state is maintained until the fill level drops below the above-described water level sensor in electrode form A.
  • the signal that water is present goes out immediately, so that the water pump drive circuit can control that the water pump electric motor 9 of the pump main body 1 stops operation immediately.
  • the submersible pump comprises a pump main body 1, three series-connection-maintaining resistors R 2 , R 6 , R 7 and four conductive electrodes are disposed on the pump housing of the pump main body 1, the four conductive electrodes each having the upper conductive electrode 5, the middle conductive electrode 6, the first common conductive electrode 7 and the second common conductive electrode 8, while the above-described three resistors R 2 , R 6 , R 7 are spaced apart with the four conductive electrodes, more specifically R 2 between the upper conductive electrode 5 and the middle conductive electrode 6, R 6 is located between the middle conductive electrode 6 and the first common conductive electrode 7, and R 7 is located between the first common conductive electrode 7 and the second common conductive electrode 8, the resistance value of the resistor R 2 described above is 100 K ⁇ , the resistance value of R 6 is also 100 K ⁇ , the Resistance of R 7 , however, is 300 K ⁇ ; the control circuit element 4 of the pump main body 1 described above is constituted by a model U 2
  • the 500 K ⁇ switch position (high water level switch position) or 400 K ⁇ switch position (middle water level switch position) is selected on the KEY multi-level switch described above;
  • the water pump turns on when the U 2 chip measures that the total resistance value of the series branches of the three resistors R 2 , R 6 , R 7 immersed in the liquid reaches or exceeds 500 K ⁇ (high water level)
  • the water pump electric motor 9 of the pump main body 1 operates when the U 2 chip measures that the total resistance value of the liquid immersed series branches of the above-described three resistors R 2 , R 6 , R 7 is 300 K ⁇ falls below (low water level), the water pump electric motor 9 of the water pump turns off;
  • the average water level switch position is selected on the multi-stage switch KEY, the water pump turns on when the U 2 chip measures that the total resistance value of the series branches of the above-described three resistors R 2 , R 6 ,
  • the U 2 chip of the above-described model SMD_CPU_RSF211B4 and its peripheral circuit represent a control technology integrating and widely used in the art chip model that can be purchased directly by professionals, in concrete use is still a corresponding control programming necessary, this element control programming belongs however, to the general knowledge of technical experts in the relevant field, by means of computer language, these technical experts of the relevant field can create them directly, and since there are different options in the computer language and the programmers pursue different subjective strategies, there is by no means a single form of control programming , In summary, neither the U 2 chip model SMD_CPU_RSF211B4 according to the present application nor the content of its control programming content of the protection claim of the present application.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

Eine Wasserpumpe, insbesondere eine Tauchpumpe, die einen Pumpenhauptkörper (1) und einen Wasserstandsschalter einschließt, wobei der Wasserstandsschalter im Wesentlichen aus mindestens zwei Sensoreinheiten (2), die beabstandet in senkrechter Richtung am Pumpenhauptkörper (1) aufgereiht angeordnet sind und die allesamt hinreichend vom Wasser berührt werden können, sowie einer Steuerungsschaltungseinheit (4), die mittels des Empfangens eines von einer beliebig festgelegten Sensoreinheit (2) ausgesandten Wassersignals das Durchsteuern und Abschalten des Pumpenhauptkörpers (1) steuert, zusammengesetzt ist. Somit wird das technische Problem der "Vereinfachung der Füllstandshöhenregelungsstruktur eines Wasserstandsschalters einer Tauchpumpe" gelöst, wobei die Struktur der Sensoreinheit (2) am Pumpenhauptkörper (1) unkompliziert ist, und die Einsatzstabilität hoch ist.A water pump, in particular a submersible pump, including a pump main body (1) and a water level switch, the water level switch consisting essentially of at least two sensor units (2) spaced in the vertical direction on the pump main body (1) and all of them sufficiently water can be touched, and a control circuit unit (4), which controls by means of receiving one of an arbitrarily defined sensor unit (2) emitted water signal controlling the turning on and off of the pump main body (1) is composed. Thus, the technical problem of "simplifying the level control structure of a submersible water level switch" is solved, and the structure of the sensor unit (2) on the pump main body (1) is uncomplicated and the operational stability is high.

Description

Technisches GebietTechnical area

Das vorliegende Gebrauchsmuster betrifft eine Wasserpumpe, insbesondere betrifft es eine Tauchpumpe.The present utility model relates to a water pump, in particular it relates to a submersible pump.

Stand der TechnikState of the art

Mit Hilfe einer solchen Tauchpumpe kann Flüssigkeit aus Behältern, Brunnen, Innenräumen von Gebäuden etc. herausgepumpt werden. Bei diesem Aspekt umfasst die Tauchpumpe einen Pumpenhauptkörper, wobei der Pumpenhauptkörper in die herauszupumpende Flüssigkeit eintauchen kann und eine Ansaugöffnung aufweist, somit kann die Flüssigkeit von der unter Druck stehenden Tauchpumpe angesaugt werden und durch die Druckauslassöffnung austreten. An der Stelle der Druckauslassöffnung kann eine Kompressionsleitung, beispielsweise eine Druckleitung, angeschlossen sein.With the help of such a submersible pump liquid from containers, wells, interiors of buildings, etc. can be pumped out. In this aspect, the submerged pump includes a pump main body, wherein the pump main body can be immersed in the liquid to be pumped out and has a suction port, thus, the liquid can be sucked by the pressurized submerged pump and exit through the pressure discharge port. At the location of the pressure outlet opening, a compression line, for example a pressure line, may be connected.

An der Außenseite des Pumpenhauptkörpers ist eine Sensoreinheit angeordnet, diese Sensoreinheit ist mit einer im Pumpenhauptkörper angeordneten Steuereinheit gekoppelt, mit ihrer Hilfe kann die Pumpe entsprechend der Füllstandshöhe der die Pumpe umgebenden Flüssigkeit eingeschaltet und ausgeschaltet werden. Beispielsweise kann vorgesehen sein, dass wenn die die Pumpe umgebende Flüssigkeit die durch die Position der Sensoreinheit vorgegebene Füllstandshöhe erreicht, die Pumpe eingeschaltet wird, und wenn die Füllstandshöhe auf unterhalb des Niveaus der Sensoreinheit absinkt, die Tauchpumpe verzögert abgeschaltet wird. Eine solche Tauchpumpe ist bereits aus dem unter der Patentnummer 200780006651.X als Gebrauchsmuster veröffentlichten chinesischen Patentdokument bekannt, das Patentdokument offenbart eine Tauchpumpe, die ein Pumpengehäuse aufweist, wobei das Pumpengehäuse in die herauszupumpende Flüssigkeit eingetaucht werden kann und eine Ansaugöffnung und eine Druckauslassöffnung aufweist, dabei kann die Flüssigkeit durch die Ansaugöffnung in das Pumpengehäuse eingesaugt werden und unter Druck durch die Druckauslassöffnung ausgebracht werden, zudem gibt es eine elektronische Steuervorrichtung, wobei die elektronische Steuervorrichtung mit einer an der Gehäuseaußenseite angeordneten Sensoreinheit gekoppelt ist, und verwendet wird, um entsprechend der Füllstandshöhe der die Pumpe umgebenden Flüssigkeit die Tauchpumpe ein- und auszuschalten; wobei die Sensoreinheit als Baueinheit, die höhenverstellbar am Pumpengehäuse gehalten wird, konstruiert ist, die Sensoreinheit weist ein Sensorgehäuse auf, wobei im Inneren des Sensorgehäuses zwei beabstandet angeordnete, mit Flüssigkeit durchfeuchtbare Elektroden angeordnet sind und eine Sensorhalterung an der Außenwand des Pumpengehäuses angeordnet ist, die Sensoreinheit kann mit der Sensorhalterung abnehmbar hinreichend verbunden werden, dabei weist die Sensorhalterung eine Profilschiene auf, die Sensoreinheit kann auf die Profilschiene geklemmt werden, wobei zudem die Sensoreinheit wenigstens ein Spannelement aufweist, das in eine Klemmstellung elastisch vorgespannt ist. Bei der obenstehend beschriebenen Struktur wird, sobald das am Sensorgehäuse befindliche Elektrodenpaar in die Flüssigkeit eintaucht, die Tauchpumpe eingeschaltet und behält diesen Einschaltstatus bei, bis die Füllstandshöhe unter das Elektrodenpaar absinkt. Hiermit wird letztendlich eine automatische Steuerung der Wasserpumpe umgesetzt.On the outside of the pump main body, a sensor unit is arranged, this sensor unit is coupled to a arranged in the pump main body control unit, with their help, the pump can be turned on and off according to the filling level of the liquid surrounding the pump. For example, it can be provided that when the liquid surrounding the pump reaches the filling level predetermined by the position of the sensor unit, the pump is switched on, and when the filling level drops below the level of the sensor unit, the submersible pump is switched off with a delay. Such a submersible pump is already known from the patent document 200780006651.X published as a utility model Chinese patent document, the patent document discloses a submersible pump having a pump housing, wherein the pump housing can be immersed in the liquid to be pumped out and having a suction port and a pressure outlet opening, thereby For example, the liquid may be sucked into the pump housing through the suction port and be discharged under pressure through the discharge port, and there is an electronic control device, wherein the electronic control device is coupled to a sensor unit disposed on the outside of the housing, and used to adjust the level of fill level the liquid surrounding the pump to turn the submersible pump on and off; wherein the sensor unit is held as a structural unit, which is adjustable in height on the pump housing, is constructed, the sensor unit comprises a sensor housing, wherein in the interior of the sensor housing two spaced-apart, wetted with liquid electrodes are arranged and a sensor holder is arranged on the outer wall of the pump housing, the sensor unit can be connected to the sensor holder detachably sufficiently connected, the Sensor holder on a rail, the sensor unit can be clamped to the rail, wherein also the sensor unit has at least one clamping element which is resiliently biased in a clamping position. In the structure described above, as soon as the pair of electrodes on the sensor housing is immersed in the liquid, the submersible pump is turned on and maintains this on state until the level drops below the pair of electrodes. This will ultimately implement an automatic control of the water pump.

Beim obenstehenden Inhalt ist der Einsatz der an der Außenwand des Pumpengehäuses angeordneten Sensoreinheit offensichtlich umsetzbar. Allerdings ist die Konstruktion zur Höhenregelung bei der obenstehend beschriebenen Sensoreinheit kompliziert und die Einsatzstabilität ist mangelhaft.In the above content, the use of the arranged on the outer wall of the pump housing sensor unit is obviously feasible. However, the height regulating structure in the above-described sensor unit is complicated and the operational stability is poor.

Gegenstand der ErfindungSubject of the invention

Ziel des vorliegenden Gebrauchsmusters ist es, eine Tauchpumpe bereitzustellen, die die obenstehend beschriebenen Unzulänglichkeiten des Stands der Technik löst, die Höhenregelung der Sensoreinheit der vorliegenden Tauchpumpe ist relativ unkompliziert.The aim of the present utility model is to provide a submersible pump which solves the deficiencies of the prior art described above, the height control of the sensor unit of the present submersible pump is relatively straightforward.

Um das beschriebene Ziel umzusetzen, umfasst die Tauchpumpe nach dem vorliegenden Gebrauchsmuster einen Pumpenhauptkörper und einen Wasserstandsschalter; wobei der Wasserstandsschalter im Wesentlichen mindestens zwei Sensoreinheiten, die beabstandet in senkrechter Richtung am Pumpenhauptkörper aufgereiht angeordnet sind und die allesamt hinreichend vom Wasser berührt werden können; sowie eine Steuerungsschaltungseinheit, die mittels des Empfangens eines von einer beliebig festgelegten Sensoreinheit ausgesandten Wassersignals das Durchsteuern und Abschalten des Pumpenhauptkörpers steuert, umfasst.To implement the described object, the submersible pump according to the present invention comprises a pump main body and a water level switch; wherein the water level switch substantially at least two sensor units, which are arranged spaced in the vertical direction on the pump main body and all of which can be sufficiently touched by the water; and a control circuit unit that controls the turning on and off of the pump main body by receiving a water signal emitted from an arbitrarily set sensor unit.

Bei der obenstehend beschriebenen bereitgestellten Tauchpumpe nehmen die mehreren Sensoreinheiten am Pumpenhauptkörper in senkrechter Richtung eine aufgereihte Anordnung vor, zwischen jeder Sensoreinheit existiert ein festgelegter Höhenunterschied. Deshalb kann, wenn zuerst beliebig festgelegt wird, dass ein Sensor betrieben wird, wenn der Füllstand der Wasserumgebung, in der die Tauchpumpe betrieben wird, über die festgelegte Sensoreinheit ansteigt, die Sensoreinheit hinreichend ein Wassersignal empfangen, und somit steuern, dass die Wasserpumpe automatisch einschaltet und diesen Einschaltstatus beibehält, bis die Füllstandshöhe unter die obenstehend festgelegte Sensoreinheit absinkt. Gleichzeitig führen bei der Tauchpumpe nach der vorliegenden Anmeldung die mehreren Sensoreinheiten, bei denen konstruktionsbedingt unterschiedliche Höhen unabhängig voneinander eingestellt werden können, dazu, dass die Tauchpumpe im automatischen Steuerungsstatus zur Auslösung der Höhenregelung des Wasserstandes lediglich mittels der Auswahl unterschiedlicher Höhenpositionen der Sensoreinheit betrieben werden kann, die gesamte Struktur der Sensoreinheit sowie die Struktur der Höhenregelung sind relativ unkompliziert, die Einsatzstabilität ist hoch.In the submersible pump provided above, the plurality of sensor units in the pump main body in the vertical direction make an arrayed arrangement, and there is a fixed height difference between each sensor unit. Therefore, when initially set arbitrarily, that a sensor is operated when the level of the water environment in which the submersible pump operated, rises above the specified sensor unit, the sensor unit receiving a sufficient amount of water signal, and thus control that the water pump automatically turns on and maintains this on status until the level drops below the above-defined sensor unit. At the same time lead in the submersible pump according to the present application, the multiple sensor units in which different heights can be set independently from each other, the fact that the submersible pump can be operated in the automatic control status to trigger the height control of the water level only by selecting different height positions of the sensor unit The entire structure of the sensor unit and the structure of the height control are relatively straightforward, the operational stability is high.

Als bevorzugte Technologie beziehen sich die obenstehend beschriebenen mindestens zwei Sensoreinheiten auf N Wasserstandsfühler in Elektrodenform, und N ≥ 2; wobei das Steuerungsschaltungselement ein Wasserpumpenantriebskreis ist, der ein Wassersignal empfängt und den Betrieb des Pumpenhauptkörpers antreibt; die N Wasserstandsfühler in Elektrodenform in senkrechter Richtung beabstandet hintereinander voneinander unabhängig am Pumpenhauptkörper angeordnet sind, und gemeinsam mittels eines Mehrstufenschalters mit dem Wasserpumpenantriebskreis per Signal verbunden sind.As a preferred technology, the at least two sensor units described above relate to N water level sensors in electrode form, and N ≥ 2; wherein the control circuit element is a water pump drive circuit that receives a water signal and drives the operation of the pump main body; the N water level sensors in the form of electrodes spaced apart in the vertical direction are arranged one behind the other independently of one another on the pump main body, and are connected together by means of a multistage switch to the water pump drive circuit by means of a signal.

Für die im obenstehend beschriebenen Ausführungsbeispiel mit bevorzugter Technologie beschriebenen Sensoreinheiten werden direkt unter technischen Experten des einschlägigen Gebiets relativ bekannte Wasserstandsfühler in Elektrodenform gewählt, mittels unterschiedlich einstellbaren Höhenpositionen am Pumpenhauptkörper können die Wasserstandsfühler in Elektrodenform den Füllstand der Wasserumgebung, in der die Pumpe betrieben wird, messen, und somit eine automatische Steuerung der Tauchpumpe umsetzen. Gleichzeitig wird die Wahl des konkreten Wasserstandsfühlers in Elektrodenform mittels eines Mehrstufenschalters umgesetzt. Die Umsetzungsstruktur des gesamten bevorzugten technischen Konzeptes ist unkompliziert, die Herstellungskosten sind vergleichsweise niedrig.For the sensor units described in the above-described preferred technology embodiment, relatively well-known water level sensors in electrode form are directly selected by those skilled in the art. By means of differently adjustable height positions on the pump main body, the water level sensors in electrode form can measure the level of the water environment in which the pump is operated , and thus implement an automatic control of the submersible pump. At the same time, the choice of concrete water level sensor is implemented in the form of electrodes by means of a multi-stage switch. The implementation structure of the entire preferred technical concept is straightforward and the production costs are comparatively low.

Als weitere bevorzugte Technologie beziehen sich die mindestens zwei Sensoreinheiten auf eine Reihenschaltungsstruktur beibehaltende N Widerstände sowie N+1 konduktive Elektroden, wobei die N Widerstände und N+1 konduktiven Elektroden jeweils auf Abstand verteilt sind und N ≥ 2 ist; das Steuerungsschaltungselement ein integrierter Chip ist, der gemäß dem Gesamtwiderstandswert der Reihenzweige der N Widerstände das Durchsteuern und Abschalten des Pumpenhauptkörpers steuert; die Reihenzweige der N Widerstände mit dem integrierten Chip eine Signalverknüpfung vornehmen, und einen Stromkreis bilden, und am integrierten Schaltkreis weiterhin ein Mehrstufenschalter elektrisch angeschlossen ist, der verwendet wird, um den Widerstandswert einzustellen, mit dem der integrierte Schaltkreis das Durchsteuern und Abschalten des Pumpenhauptkörpers steuert.As a further preferred technology, the at least two sensor units relate to N series resistive resistors and N + 1 conductive electrodes, the N resistors and N + 1 conductive electrodes being spaced apart and N≥2; the control circuit element is an integrated chip which, according to the total resistance value of the series branches of the N Resistors controls the turning on and off of the pump main body; the series branches of the N resistors with the integrated chip make a signal connection, and form a circuit, and the integrated circuit further a multi-stage switch is electrically connected, which is used to set the resistance value, with which the integrated circuit controls the switching on and off of the pump main body ,

Das obenstehend beschriebene Steuerungsschaltungselement ist ein integrierter Chip, der gemäß dem Gesamtwiderstandswert der Reihenzweige der N Widerstände das Durchsteuern und Abschalten des Pumpenhauptkörpers steuert; wobei er mittels der Änderung des Gesamtwiderstandswertes am Reihenzweig der N Widerstände das sofortige Ein- und Ausschalten oder ein verzögertes Ein- und Ausschalten des Pumpenhauptkörpers steuern kann.The above-described control circuit element is an integrated chip which controls, in accordance with the total resistance value of the series branches of the N resistors, the turn-on and turn-off of the pump main body; wherein it can control the instantaneous on and off or delayed on and off of the pump main body by means of the change of the total resistance value at the series branch of the N resistors.

Beim obenstehend beschriebenen weiteren Ausführungsbeispiel mit bevorzugter Technologie beziehen sich die mindestens zwei Sensoreinheiten auf eine Reihenschaltungsstruktur beibehaltende N Widerstände sowie N+1 konduktive Elektroden, wobei die N Widerstände und N+1 konduktiven Elektroden jeweils auf Abstand verteilt sind, und an den beiden Enden der Widerstände an den Reihenzweigen jeweils ein Paar konduktive Elektroden hervorsteht, sobald das jedem Widerstand entsprechende konduktive Elektrodenpaar in die Wasserumgebung, in der die Tauchpumpe betrieben wird, eintaucht, kann beim den Elektroden entsprechenden Widerstand ein Kurzschluss erwirkt werden, was eine Änderung des Gesamtwiderstandswertes an den gesamten Reihenzweigen erzeugt. Daher kann das obenstehend beschriebene Ausführungsbeispiel bei einer konkreten Änderung der Füllstandshöhe beim Betrieb der Tauchpumpe in der Wasserumgebung mittels einer Änderung des Gesamtwiderstandswertes der Reihenzweige an der Tauchpumpe dem integrierten Chip ein Feedback geben. Der Anwender kann mittels des Mehrstufenschalters den Widerstandswert für das automatische Ein- und Ausschalten der in der vorliegenden Anmeldung bereitgestellten Tauchpumpe voreinstellen, wenn bei der Füllstandshöhe der Tauchpumpenumgebung eine Änderung auftritt, steuert, sobald der tatsächliche Gesamtwiderstandswert des Eichenzweiges den eingestellten Widerstandswert erreicht oder unterschreitet, die Steuerungsschaltungseinheit die Betriebsaufnahme der Tauchpumpe, anderenfalls beendet die Pumpe dann den Betrieb. Das gesamte bevorzugte technische Konzept betrifft keinerlei elektronische Sensorelemente, was die Herstellungskosten hinreichend senkt.In the preferred embodiment of the present invention described above, the at least two sensor units refer to N series resistive N resistors and N + 1 conductive electrodes, the N resistors and N + 1 conductive electrodes being respectively spaced, and the two ends of the resistors a pair of conductive electrodes each protrude on the series branches, as soon as the conductive pair of electrodes corresponding to each resistor is immersed in the water environment in which the submersible pump is operated, a short circuit can be obtained in the resistor corresponding to the electrodes, which changes the total resistance across the entire series branches generated. Therefore, the embodiment described above can give a feedback to the integrated chip in a concrete change in the level height during operation of the submersible pump in the water environment by means of a change in the total resistance value of the series branches on the submersible pump. The user can use the multistage switch to preset the resistance value for the automatic switching on and off of the submersible pump provided in the present application, if a change occurs at the level of the submersible pump environment, controls as soon as the actual total resistance value of the oak branch reaches or falls below the set resistance value Control circuit unit, the operating recording of the submersible pump, otherwise the pump then stops the operation. The entire preferred technical concept does not concern any electronic sensor elements, which lowers the manufacturing costs sufficiently.

Bei der mit dem vorliegenden Gebrauchsmuster erhaltenen Tauchpumpe ist die Struktur der Sensoreinheit am Pumpenhauptkörper unkompliziert und die Einsatzstabilität hoch; gleichzeitig gibt es eine Reihe an Vorteilen wie vergleichsweise niedrige Herstellungskosten und gute Wirtschaftlichkeit.In the submersible pump obtained by the present invention, the structure of the sensor unit on the pump main body is uncomplicated and the operational stability is high; At the same time there are a number of advantages such as comparatively low production costs and good economy.

Beschreibung der beigefügten FigurenDescription of the attached figures

  • Figur 1 ist eine Konstruktionsskizze einer nach Ausführungsform 1 bereitgestellten Tauchpumpe; FIG. 1 Fig. 13 is a construction diagram of a submersible pump provided in Embodiment 1;
  • Figur 2 ist ein Prinzipschema einer nach Ausführungsform 1 bereitgestellten Tauchpumpe; FIG. 2 is a schematic diagram of a submersible pump provided in accordance with Embodiment 1;
  • Figur 3 ist eine Konstruktionsskizze einer nach Ausführungsform 2 bereitgestellten Tauchpumpe; FIG. 3 Fig. 11 is a construction diagram of a submersible pump provided in Embodiment 2;
  • Figur 4 ist ein Prinzipschema einer nach Ausführungsform 2 bereitgestellten Tauchpumpe; FIG. 4 is a schematic diagram of a submersible pump provided according to Embodiment 2;
  • Figur 5 ist ein Schaltplan einer nach Ausführungsform 2 bereitgestellten Tauchpumpe; FIG. 5 is a circuit diagram of a submersible pump provided in accordance with Embodiment 2;

In den Figuren ist: Pumpenhauptkörper 1, Sensoreinheit 2, Mehrstufenschalter 3, Steuerungsschaltungselement 4, obere konduktive Elektrode 5, mittlere konduktive Elektrode 6, erste allgemeine konduktive Elektrode 7, zweite allgemeine konduktive Elektrode 8, Wasserpumpen-Elektromotor 9.In the figures, pump main body 1, sensor unit 2, multistage switch 3, control circuit element 4, upper conductive electrode 5, middle conductive electrode 6, first common conductive electrode 7, second common conductive electrode 8, water pump electric motor 9.

Ausführungsbeispieleembodiments

Untenstehend wird das Gebrauchsmuster die Figuren und Ausführungsbeispiele kombinierend weitergehend beschrieben.Below, the utility model, the figures and embodiments combining further described.

Ausführungsbeispiel 1:Embodiment 1

Wie in Figur 1 und Figur 2 dargestellt, umfasst die Tauchpumpe nach dem vorliegenden Gebrauchsmuster einen Pumpenhauptkörper 1, am Pumpengehäuse des Pumpenhauptkörpers 1 ist eine Sensoreinheit 2 angeordnet, die Sensoreinheit 2 besteht aus drei Wasserstandsfühlern in Elektrodenform A, B, C, die drei Wasserstandsfühler in Elektrodenform sind in senkrechter Richtung beabstandet hintereinander aufgereiht angeordnet, und zwischen ihnen existiert jeweils ein festgelegter Höhenunterschied; das Steuerungsschaltungselement 4 des Pumpenhauptkörpers 1 ist ein einfacher ein Wassersignal empfangender Wasserpumpenantriebskreis; die drei Wasserstandsfühler in Elektrodenform A, B, C sind gemeinsam mittels eines vierstufigen Mehrstufenschalters 3 mit einem als Steuerungsschaltungselement 4 der Wasserpumpe fungierenden Wasserpumpenantriebskreis per Signal verbunden.As in FIG. 1 and FIG. 2 In the present invention, the submersible pump comprises a pump main body 1, a sensor unit 2 is arranged on the pump housing of the pump main body 1, the sensor unit 2 consists of three water level sensors in electrode form A, B, C, the three water level sensors in electrode form are spaced one behind the other in the vertical direction arranged in a row, and there is a fixed height difference between them; the control circuit element 4 of the pump main body 1 is a simple one Water signal receiving water pump drive circuit; the three water level sensors in electrode form A, B, C are connected together by means of a four-stage multi-stage switch 3 with a water pump drive circuit acting as a control circuit element 4 of the water pump by signal.

Während des Betriebs legt der obenstehend beschriebene Mehrstufenschalter 3 als Vorauswahl fest, dass ein beliebiger der drei Wasserstandsfühler in Elektrodenform A, B, C betrieben wird, beispielsweise wird festgelegt, dass der Wasserstandsfühler in Elektrodenform A betrieben wird, wenn der Füllstand der Wasserumgebung, in der die Tauchpumpe betrieben wird, über den obenstehend beschriebenen Wasserstandsfühler in Elektrodenform A ansteigt, so dass der Wasserstandsfühler in Elektrodenform A vollständig in die Flüssigkeit eintaucht, und hat der obenstehend beschriebene Wasserpumpenantriebskreis vom Wasserstandsfühler in Elektrodenform A als Rückkopplung das Signal erhalten, dass Wasser vorhanden ist, erfolgt die Steuerung, dass der Wasserpumpen-Elektromotor 9 im Pumpenhauptkörper 1 in Betrieb genommen und dieser Betriebszustand aufrechterhalten wird, bis die Füllstandshöhe unter den obenstehend beschriebenen Wasserstandsfühler in Elektrodenform A absinkt. Dabei erlischt am Wasserstandsfühler in Elektrodenform das Signal, dass Wasser vorhanden ist, unmittelbar, so dass der Wasserpumpenantriebskreis steuern kann, dass der Wasserpumpen-Elektromotor 9 des Pumpenhauptkörpers 1 den Betrieb sofort einstellt.During operation, the above-described multi-stage switch 3 preselects that any one of the three water level sensors is operated in electrode form A, B, C, for example, it is determined that the water level sensor is operated in electrode form A when the level of the water environment in which operating the submersible pump above the above-described water level sensor in electrode form A, so that the water level sensor in electrode form A is completely immersed in the liquid, and the water pump drive circuit described above from the water level sensor in electrode form A has received as a feedback the signal that water is present, the control is made that the water pump electric motor 9 is put into operation in the pump main body 1 and this operating state is maintained until the fill level drops below the above-described water level sensor in electrode form A. At the same time, at the water level sensor in electrode form, the signal that water is present goes out immediately, so that the water pump drive circuit can control that the water pump electric motor 9 of the pump main body 1 stops operation immediately.

Ausführungsbeispiel 2:Embodiment 2:

Wie in den Figuren 3-5 dargestellt, umfasst die Tauchpumpe nach dem vorliegenden Gebrauchsmuster einen Pumpenhauptkörper 1, am Pumpengehäuse des Pumpenhauptkörpers 1 sind drei eine Reihenschaltungsstruktur aufrechterhaltende Widerstände R2, R6, R7 sowie vier konduktive Elektroden angeordnet, wobei die vier konduktiven Elektroden jeweils die obere konduktive Elektrode 5, die mittlere konduktive Elektrode 6, die erste allgemeine konduktive Elektrode 7 und die zweite allgemeine konduktive Elektrode 8 sind, dabei sind die obenstehend beschriebenen drei Widerstände R2, R6, R7 mit den vier konduktiven Elektroden jeweils auf Abstand verteilt, genauer gesagt befindet sich R2 zwischen der oberen konduktiven Elektrode 5 und der mittleren konduktiven Elektrode 6, befindet sich R6 zwischen der mittleren konduktiven Elektrode 6 und der ersten gemeinsamen konduktiven Elektrode 7, und befindet sich R7 zwischen der ersten gemeinsamen konduktiven Elektrode 7 und der zweiten gemeinsamen konduktiven Elektrode 8, der Widerstandswert des obenstehend beschriebenen Widerstands R2 beläuft sich auf 100 KΩ, der Widerstandswert von R6 beläuft sich ebenfalls auf 100 KΩ, der Widerstandswert von R7 beläuft sich jedoch auf 300 KΩ; das Steuerungsschaltungselement 4 des obenstehend beschriebenen Pumpenhauptkörpers 1 wird von einem U2-Chip vom Modell SMD_CPU_RSF211 B4 sowie dessen Peripherieschaltkreis gebildet; die Reihenzweige der obenstehend beschriebenen drei Widerstände R2, R6, R7 sind mittels einer Kabelschnittstelle J2 vom Modell P_2P_2MM54_180 mit dem SENSOR-Pin des U2-Chips gekoppelt; es gibt einen Mehrstufenschalter KEY, mit dem der RESET-Pin des obenstehend beschriebenen U2-Chips gemeinsam mit dem MODE-Pin gekoppelt ist, am Mehrstufenschalter KEY werden eine 500 KΩ-Schalterstellung und eine 400 KΩ-Schalterstellung angezeigt.As in the Figures 3-5 In the present invention, the submersible pump comprises a pump main body 1, three series-connection-maintaining resistors R 2 , R 6 , R 7 and four conductive electrodes are disposed on the pump housing of the pump main body 1, the four conductive electrodes each having the upper conductive electrode 5, the middle conductive electrode 6, the first common conductive electrode 7 and the second common conductive electrode 8, while the above-described three resistors R 2 , R 6 , R 7 are spaced apart with the four conductive electrodes, more specifically R 2 between the upper conductive electrode 5 and the middle conductive electrode 6, R 6 is located between the middle conductive electrode 6 and the first common conductive electrode 7, and R 7 is located between the first common conductive electrode 7 and the second common conductive electrode 8, the resistance value of the resistor R 2 described above is 100 KΩ, the resistance value of R 6 is also 100 KΩ, the Resistance of R 7 , however, is 300 KΩ; the control circuit element 4 of the pump main body 1 described above is constituted by a model U 2 chip SMD_CPU_RSF211 B4 and its peripheral circuit; the series branches of the three resistors R 2 , R 6 , R 7 described above are coupled to the SENSOR pin of the U 2 chip by means of a cable interface J 2 of the model P_2P_2MM54_180; There is a multi-level switch KEY which couples the RESET pin of the U 2 chip described above together with the MODE pin, the multi-level switch KEY displays a 500 KΩ switch position and a 400 KΩ switch position.

Während des Betriebs wird am obenstehend beschriebenen Mehrstufenschalter KEY die 500 KΩ-Schalterstellung (hohe Wasserstandsschalterstellung) oder 400 KΩ-Schalterstellung (mittlere Wasserstandsschalterstellung) gewählt; wenn am Mehrstufenschalter KEY die hohe Wasserstandsschalterstellung gewählt wird, schaltet die Wasserpumpe ein, wenn der U2-Chip misst, dass der Gesamtwiderstandswert der in die Flüssigkeit eingetauchten Reihenzweige der obenstehend beschriebenen drei Widerstände R2, R6, R7 500 KΩ erreicht oder überschreitet (hoher Wasserstand), setzt sich der Wasserpumpen-Elektromotor 9 des Pumpenhauptkörpers 1 in Betrieb, wenn der U2-Chip misst, dass der Gesamtwiderstandswert der in die Flüssigkeit eingetauchten Reihenzweige der obenstehend beschriebenen drei Widerstände R2, R6, R7 300 KΩ unterschreitet (niedriger Wasserstand), schaltet sich der Wasserpumpen-Elektromotor 9 der Wasserpumpe ab; gleichermaßen gilt, wenn am Mehrstufenschalter KEY die mittlere Wasserstandsschalterstellung gewählt wird, schaltet die Wasserpumpe ein, wenn der U2-Chip misst, dass der Gesamtwiderstandswert der in die Flüssigkeit eingetauchten Reihenzweige der obenstehend beschriebenen drei Widerstände R2, R6, R7 400 KΩ erreicht oder überschreitet (hoher Wasserstand), setzt sich der Wasserpumpen-Elektromotor 9 des Pumpenhauptkörpers 1 in Betrieb, wenn der U2-Chip misst, dass der Gesamtwiderstandswert der in die Flüssigkeit eingetauchten Reihenzweige der obenstehend beschriebenen drei Widerstände R2, R6, R7 300 KΩ unterschreitet (niedriger Wasserstand), schaltet sich der Wasserpumpen-Elektromotor 9 der Wasserpumpe ab.During operation, the 500 KΩ switch position (high water level switch position) or 400 KΩ switch position (middle water level switch position) is selected on the KEY multi-level switch described above; when the high water level switch position is selected on the multi-stage switch KEY, the water pump turns on when the U 2 chip measures that the total resistance value of the series branches of the three resistors R 2 , R 6 , R 7 immersed in the liquid reaches or exceeds 500 KΩ (high water level), the water pump electric motor 9 of the pump main body 1 operates when the U 2 chip measures that the total resistance value of the liquid immersed series branches of the above-described three resistors R 2 , R 6 , R 7 is 300 KΩ falls below (low water level), the water pump electric motor 9 of the water pump turns off; Similarly, if the average water level switch position is selected on the multi-stage switch KEY, the water pump turns on when the U 2 chip measures that the total resistance value of the series branches of the above-described three resistors R 2 , R 6 , R 7 400 KΩ immersed in the liquid reaches or exceeds (high water level), the water pump electric motor 9 of the pump main body 1 operates when the U 2 chip measures that the total resistance value of the liquid immersed series branches of the above-described three resistors R 2 , R 6 , R 7 300 KΩ falls below (low water level), the water pump electric motor 9 of the water pump turns off.

Der U2-Chip vom obenstehend beschriebenen Modell SMD_CPU_RSF211B4 sowie sein Peripherieschaltkreis stellen ein Steuertechnologie integrierendes und im einschlägigen Fachgebiet weit verbreitetes Chipmodell dar, das von Fachleuten direkt erworben werden kann, beim konkreten Einsatz ist noch eine entsprechende Steuerprogrammierung notwendig, diese Elementsteuerungsprogrammierung gehört jedoch zum Allgemeinwissen von technischen Experten des einschlägigen Gebietes, mittels Computersprache können diese technischen Experten des einschlägigen Gebietes diese direkt erstellen, und da es bei der Computersprache unterschiedliche Optionen gibt sowie die Programmierer unterschiedliche subjektive Strategien verfolgen, gibt es für die Steuerprogrammierung keinesfalls nur eine einzige Form. Zusammenfassend lässt sich sagen, dass weder der U2-Chip vom Modell SMD_CPU_RSF211B4 nach der vorliegenden Anmeldung noch der Inhalt seiner Steuerprogrammierung Inhalt des Schutzanspruches der vorliegenden Anmeldung sind.The U 2 chip of the above-described model SMD_CPU_RSF211B4 and its peripheral circuit represent a control technology integrating and widely used in the art chip model that can be purchased directly by professionals, in concrete use is still a corresponding control programming necessary, this element control programming belongs however, to the general knowledge of technical experts in the relevant field, by means of computer language, these technical experts of the relevant field can create them directly, and since there are different options in the computer language and the programmers pursue different subjective strategies, there is by no means a single form of control programming , In summary, neither the U 2 chip model SMD_CPU_RSF211B4 according to the present application nor the content of its control programming content of the protection claim of the present application.

Claims (3)

Tauchpumpe, die einen Pumpenhauptkörper (1) und einen Wasserstandsschalter einschließt, dadurch gekennzeichnet, dass: der Wasserstandsschalter im Wesentlichen mindestens zwei beabstandet in senkrechter Richtung am Pumpenhauptkörper (1) aufgereiht angeordnete und allesamt hinreichend vom Wasser berührte Sensoreinheiten (2) sowie eine Steuerungsschaltungseinheit, die mittels des Empfangens eines von einer beliebigen Sensoreinheit (2) ausgesandten Wassersignals das Durchsteuern und Abschalten des Pumpenhauptkörpers (1) steuert, umfasst.A submersible pump including a pump main body (1) and a water level switch, characterized in that : the water level switch is arranged substantially at least two sensor units (2) spaced apart in the vertical direction on the pump main body (1) and all sufficiently touched by the water, and a control circuit unit by means of receiving a water signal emitted by any sensor unit (2) controls the turning on and off of the pump main body (1) comprises. Tauchpumpe gemäß den Beschreibungen in Anspruch 1, dadurch gekennzeichnet, dass die mindestens zwei Sensoreinheiten (2) sich auf N Widerstände einer Reihenschaltungsstruktur sowie N+1 konduktive Elektroden beziehen, wobei die N Widerstände und N+1 konduktiven Elektroden jeweils auf Abstand verteilt sind und N ≥ 2 ist; das Steuerungsschaltungselement (4) ein integrierter Chip ist, der gemäß dem Gesamtwiderstandswert der Reihenzweige der N Widerstände das Durchsteuern und Abschalten des Pumpenhauptkörpers (1) steuert; die Reihenzweige der N Widerstände mit dem integrierten Chip eine Signalverknüpfung vornehmen, und einen Stromkreis bilden, und am integrierten Schaltkreis weiterhin ein Mehrstufenschalter (3) elektrisch angeschlossen ist, der verwendet wird, um den Widerstandswert einzustellen, mit dem der integrierte Schaltkreis das Durchsteuern und Abschalten des Pumpenhauptkörpers (1) steuert.Submersible pump according to the descriptions in claim 1, characterized in that the at least two sensor units (2) refer to N resistors of a series circuit structure and N + 1 conductive electrodes, wherein the N resistors and N + 1 conductive electrodes are distributed in each case at a distance and N ≥ 2; the control circuit element (4) is an integrated chip that controls the turning on and off of the pump main body (1) according to the total resistance value of the series branches of the N resistors; the series branches of the N resistors signal-connect with the integrated chip and form a circuit, and the integrated circuit is further electrically connected to a multi-stage switch (3) which is used to set the resistance value with which the integrated circuit controls and switches off of the pump main body (1) controls. Tauchpumpe gemäß den Beschreibungen in Anspruch 1, dadurch gekennzeichnet, dass die mindestens zwei Sensoreinheiten (2) sich auf N Wasserstandsfühler in Elektrodenform beziehen, und N ≥ 2 ist; wobei das Steuerungsschaltungselement (4) ein Wasserpumpenantriebskreis ist, der ein Wassersignal empfängt und den Betrieb des Pumpenhauptkörpers (1) antreibt; die N Wasserstandsfühler in Elektrodenform in senkrechter Richtung beabstandet hintereinander voneinander unabhängig am Pumpenhauptkörper (1) angeordnet sind, und gemeinsam mittels eines Mehrstufenschalters (3) mit dem Wasserpumpenantriebskreis per Signal verbunden sind.Submersible pump according to the description in claim 1, characterized in that the at least two sensor units (2) relate to N water level sensors in electrode form, and N ≥ 2; wherein the control circuit element (4) is a water pump drive circuit that receives a water signal and drives the operation of the pump main body (1); the N water level sensors in the form of electrodes spaced apart in the vertical direction are arranged one behind the other independently of one another on the pump main body (1) and are connected in common to the water pump drive circuit by means of a multi-stage switch (3).
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3577345A4 (en) * 2017-02-03 2020-11-25 Flow Control LLC. Bilge pump having outside sensing surface with ribs
CN110319028A (en) * 2018-03-31 2019-10-11 江苏江进泵业有限公司 A kind of intelligence proof submersible sand discharging pump
EP3875765A1 (en) * 2020-03-02 2021-09-08 Husqvarna Ab Submersible pump with touch sensitive sensors
WO2021175474A1 (en) 2020-03-02 2021-09-10 Husqvarna Ab Submersible pump with touch sensitive sensors

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ES2693196T3 (en) 2018-12-10
PT3091234T (en) 2018-12-04
CN204572414U (en) 2015-08-19
EP3091234B1 (en) 2018-08-29
DK3091234T3 (en) 2018-12-17

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