EP1179681B1 - Submersible motor pump unit - Google Patents

Submersible motor pump unit Download PDF

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Publication number
EP1179681B1
EP1179681B1 EP01118688A EP01118688A EP1179681B1 EP 1179681 B1 EP1179681 B1 EP 1179681B1 EP 01118688 A EP01118688 A EP 01118688A EP 01118688 A EP01118688 A EP 01118688A EP 1179681 B1 EP1179681 B1 EP 1179681B1
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EP
European Patent Office
Prior art keywords
submersible pump
pressure
pressure switch
switch
casing
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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.)
Expired - Lifetime
Application number
EP01118688A
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German (de)
French (fr)
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EP1179681A3 (en
EP1179681A2 (en
Inventor
Ernst Dipl.-Ing. Ashauer
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Comet Pumpen Systemtechnik GmbH and Co KG
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Comet Pumpen Systemtechnik GmbH and Co KG
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Publication of EP1179681A3 publication Critical patent/EP1179681A3/en
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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
    • 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
    • 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

Definitions

  • the invention relates to a submersible pump arrangement, in particular as part of a Fresh water supply from a fresh water reservoir via a Hose line assembly to at least one removal fitting, with at least a submersible pump, which in a waterproof housing formed an electrical Drive motor for an impeller in an open pressure chamber, of which leads an outlet channel to a hose line, and with a pressure switch, which turns on when falling below a first output pressure threshold, the submersible pump and when a second output pressure threshold is exceeded, the submersible pump turns off and communicating with the output channel communicating sealed in the Housing is integrated and where connecting lines between the drive motor and the pressure switch within the housing.
  • submersible pumps For this purpose used submersible pumps a waterproof trained housing in which an electric drive motor is arranged, whose output shaft sealed by a wall of the housing is guided in an open pressure chamber, where the output shaft with a Impeller is connected. From the pressure chamber, the water over a Output channel pressed into a hose.
  • Submersible pumps use one or more, with several submersible pumps preferably be arranged as a cascade, i. that the exit channel an upstream submersible pump with the pressure chamber located downstream connected subsequent submersible pump.
  • a cascade arrangement of several Pumps in a single housing is known from DE 299 16 897 U1.
  • Such submersible pumps are usually switched on directly via electrical switches, which are actuated separately or preferably with the removal fitting can be coupled. In the latter case, the actuation of the removal fitting the electric switch is closed and the submersible pump switched on.
  • DE 33 44 765 A1 discloses a submersible pump arrangement of the beginning mentioned type, in which the pressure switch in the form of a membrane switch housed in the housing of the submersible pump itself. In the output channel there is a check valve in the form of a flap valve. immediate downstream of the check valve is one with a pressure chamber of the Membrane switch communicating opening provided with a frontal Cover piece of the cylindrical housing is formed.
  • the membrane is here Part of a plastic piece that is shaped to make it a sealed passage the power cable, the diaphragm, the check valve and the seal forms between the housing and the cover part.
  • This part is just like that Housing complicated structure and does not allow realization of the submersible pump with previously common designs.
  • the invention is therefore based on the problem, a submersible pump assembly of the type mentioned above in such a way that the design conventional Submersible pumps without pressure switch are essentially maintained can.
  • a submersible pump assembly of the type mentioned above characterized in that the pressure switch is arranged in a housing part, which is fixed and sealed as a separate part with a conventional housing part of the submersible pump without pressure switch is connected to the housing part of the pressure switch on an outlet spout the outlet channel of the housing part of the submersible pump is placed, wherein a pressure channel is formed by a gap with which the Pressure switch communicates and that a sealed cable gland between the housing parts is provided
  • the pressure switch is thus arranged in a housing part, as a separate part and sealed with a conventional housing part the submersible pump is connected without pressure switch, being in a special constructive embodiment, the housing part of the pressure switch on an outlet spout the output channel of the housing part of the submersible pump is placed and the pressure channel is formed by a gap.
  • the pressure switch can be a customary used membrane switch, but also with a sealed guided piston be formed. It is also possible, the pressure switch as an electrical output signal emit the issuing pressure sensor whose output with a electrical switch is connected. In this way, the switching of the electronic switch by the output signal of the pressure sensor controlled.
  • the present invention is also suitable for a cascaded one Arrangement of several submersible pumps, the pressure switch then with the output channel the last submersible pump of the cascade communicates.
  • the drawing shows a housing 1, which consists of a first housing part 2 and a second housing part 3.
  • a Drive motor 4 mounted in a waterproof inner chamber into which a cable. 5 introduced with two wires 6, 6 'sealed.
  • a Output shaft 7 of the drive motor 4 through a seal 8 from the chamber led out of the drive motor 4 and projects into a pressure chamber 9, with a central inlet opening 10 is open at the bottom.
  • an impeller 11 in the form of an impeller applied.
  • the pressure chamber communicates with a chamber the drive motor 4 surrounding the closed annular space 12, so that the through the inlet opening 10 inflowing water through the impeller 11 also is pressed into the annular space 12 and so contributes to the cooling of the drive motor 4.
  • the pressure chamber 9 On the output side, the pressure chamber 9 at a radial end with an axially extending output channel 13, in which a check valve 14 is inserted is.
  • the upper end of the outlet channel 13 forms a cylindrical spout 15, to which a hose 16 would be pushed, if a conventional Submersible pump would be used without the second housing part 3.
  • the second housing part 3 is placed on the first housing part 2, with a cylindrical connector 17 which is sealed is pushed over the nozzle 15 to form a gap 18, in a horizontal pressure channel 19 opens.
  • the horizontal pressure channel 19 ends at a stepped diameter enlargement, at which a membrane 20 so is attached, that it closes the pressure channel 19 on one side.
  • the membrane 20 is replaced by a hollow cylindrical piece 21 of the second housing part 3 at the outer Edge held and set. With the membrane 20 is a switch plunger 22nd connected, which triggers a switching operation in an electrical switch 22 '.
  • the arrangement of membrane 20, switch plunger 22 and electrical switch 22 ' forms a pressure switch 23.
  • the wire 6 ' runs into it and a wire 6 "connected to a terminal of the drive motor 4 is.
  • the drive motor 4 With a second connection of the drive motor 4, the core 6 of the Cable 5 connected. Accordingly, the drive motor 4 becomes a supply current supplied only when the switch 22 'is closed.
  • the switch 22 ' is closed, that is conducting, when the pressure in the output channel 13 below a first output pressure threshold is.
  • the switch 22 's switches so that a current-conducting connection between the wires 6 ', 6 "interrupted is, so that no further supply current supplied to the drive motor 4 and he stops.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Frames (AREA)

Description

Die Erfindung betrifft eine Tauchpumpenanordnung, insbesondere als Teil einer Frischwasserversorgung aus einem Frischwasser-Vorratsbehälter über eine Schlauchleitungsanordnung zu wenigstens einer Entnahmearmatur, mit wenigstens einer Tauchpumpe, die in einem wasserdicht ausgebildeten Gehäuse einen elektrischen Antriebsmotor für ein Pumpenrad in einer offenen Druckkammer aufweist, von der ein Ausgangskanal zu einer Schlauchleitung führt, und mit einem Druckschalter, der beim Unterschreiten einer ersten Ausgangsdruckschwelle die Tauchpumpe einschaltet und beim Überschreiten einer zweiten Ausgangsdruckschwelle die Tauchpumpe ausschaltet und mit dem Ausgangskanal kommunizierend abgedichtet in das Gehäuse integriert ist und wobei Verbindungsleitungen zwischen dem Antriebsmotor und dem Druckschalter innerhalb des Gehäuses verlaufen.The invention relates to a submersible pump arrangement, in particular as part of a Fresh water supply from a fresh water reservoir via a Hose line assembly to at least one removal fitting, with at least a submersible pump, which in a waterproof housing formed an electrical Drive motor for an impeller in an open pressure chamber, of which leads an outlet channel to a hose line, and with a pressure switch, which turns on when falling below a first output pressure threshold, the submersible pump and when a second output pressure threshold is exceeded, the submersible pump turns off and communicating with the output channel communicating sealed in the Housing is integrated and where connecting lines between the drive motor and the pressure switch within the housing.

Für die Wasserversorgung, beispielsweise in Freizeitfahrzeugen, Verkaufsfahrzeugen, Reisebussen oder Booten, werden häufig selbst ansaugende Pumpen eingesetzt, die nach dem Prinzip der Flügelzellenpumpen, Zahnradpumpen, Ovalradpumpen, Kolbenpumpen oder Membranpumpen arbeiten. In Nachbildung einer Hauswasser-Versorgungsanlage, bei der das Wasser ständig unter einem vorbestimmten Wasserdruck ansteht, sind die Pumpen häufig in ein Druckwassersystem eingebaut. Ein üblicherweise mit einer Membran versehener Druckschalter schaltet die Pumpe an, wenn eine erste, niedrige Ausgangswasserdruckschwelle unterschritten wird. Die Tauchpumpe wird wieder ausgeschaltet, wenn eine zweite, höhere Ausgangswasserdruckschwelle erreicht wird. Die selbst ansaugenden Pumpen werden außerhalb des Wasserbehälters angeordnet. Für diese selbst ansaugenden Pumpen ist es bekannt, den Druckschalter in das Gehäuse der Pumpe zu integrieren.For the water supply, for example in recreational vehicles, sales vehicles, Coaches or boats often become self-priming pumps used according to the principle of vane pumps, gear pumps, oval wheel pumps, Piston pumps or diaphragm pumps work. In a replica of a Domestic water supply system, in which the water is constantly under a predetermined Water pressure is pending, the pumps are often in a pressurized water system built-in. A commonly provided with a membrane pressure switch turns on the pump when a first, low outlet water pressure threshold is fallen short of. The submersible pump is switched off again when a second, higher output water pressure threshold is reached. The self-sucking Pumps are placed outside the water tank. For this Self-priming pumps are known to push the pressure switch into the housing to integrate the pump.

Der Betrieb der selbst ansaugenden Pumpen, die außerhalb des Wasserbehälters montiert sind, führt häufig zu einer Geräuschbelästigung, die insbesondere dann besonders störend ist, wenn der Einbau in einem als Schlafstätte genutzten Fahrzeug erfolgt ist. Eine Geräuschbelästigung ist häufig selbst in benachbarten Fahrzeugen merkbar. Die Geräusche entstehen häufig durch Resonanzen, die durch die Vibrationen der Pumpe über die Befestigungselemente für die Pumpe bzw. die Druckleitung erzeugt werden.Operation of self-priming pumps outside the water tank are mounted, often leads to a noise nuisance, especially then Particularly disturbing is when the installation in a used as a sleeping place vehicle is done. Noise pollution is common even in neighboring vehicles noticeable. The sounds are often caused by resonances passing through the vibration of the pump via the fasteners for the pump or the Pressure line can be generated.

Es ist bekannt, dass die Geräuschbelästigung durch den Einsatz von Tauchpumpen vermieden werden kann. Zu diesem Zweck benutzte Tauchpumpen weisen ein wasserdicht ausgebildetes Gehäuse auf, in dem ein elektrischer Antriebsmotor angeordnet ist, dessen Abtriebswelle abgedichtet durch eine Wand des Gehäuses in eine offene Druckkammer geführt ist, wo die Abtriebswelle mit einem Pumpenrad verbunden ist. Aus der Druckkammer wird das Wasser über einen Ausgangskanal in eine Schlauchleitung gedrückt. Es ist bekannt, derartige Tauchpumpen einzeln oder zu mehreren einzusetzen, wobei mehrere Tauchpumpen vorzugsweise als Kaskade angeordnet werden, d.h. dass der Ausgangkanal eine stromaufwärts liegenden Tauchpumpe mit der Druckkammer der sich stromabwärts anschließenden Tauchpumpe verbunden ist. Die Versorgung des Antriebsmotors mit Strom erfolgt über eine abgedichtete Kabeldurchführung in das wasserdicht ausgeführte Gehäuse hinein. Eine Kaskadenanordnung mehrerer Pumpen in einem einzigen Gehäuse ist durch DE 299 16 897 U1 bekannt. It is known that the noise pollution by the use of submersible pumps can be avoided. For this purpose used submersible pumps a waterproof trained housing in which an electric drive motor is arranged, whose output shaft sealed by a wall of the housing is guided in an open pressure chamber, where the output shaft with a Impeller is connected. From the pressure chamber, the water over a Output channel pressed into a hose. It is known such Submersible pumps use one or more, with several submersible pumps preferably be arranged as a cascade, i. that the exit channel an upstream submersible pump with the pressure chamber located downstream connected subsequent submersible pump. The supply of the drive motor with electricity via a sealed cable gland in the waterproof executed housing inside. A cascade arrangement of several Pumps in a single housing is known from DE 299 16 897 U1.

Derartige Tauchpumpen werden üblicherweise direkt über Elektroschalter eingeschaltet, die separat betätigbar sind oder vorzugsweise mit der Entnahmearmatur gekoppelt sein können. Im letztgenannten Fall wird durch die Betätigung der Entnahmearmatur der elektrische Schalter geschlossen und die Tauchpumpe eingeschaltet. Durch DE 33 44 765 A1 ist eine Tauchpumpenanordnung der eingangs erwähnten Art bekannt, bei der der Druckschalter in Form eines Membranschalters in dem Gehäuse der Tauchpumpe selbst untergebracht ist. Im Ausgangskanal befindet sich ein Rückschlagventil in Form eines Klappenventils. Unmittelbar stromabwärts von dem Rückschlagventil ist eine mit einer Druckkammer des Membranschalters kommunizierende Öffnung vorgesehen, die mit einem stirnseitigen Deckelstück des zylindrischen Gehäuses gebildet ist. Die Membran ist dabei Teil eines Kunststoffstücks, das so geformt ist, dass es eine abgedichtete Durchführung der Stromkabel, die Membran, das Rückschlagventil und die Abdichtung zwischen dem Gehäuse und dem Deckelteil bildet. Diese Teil ist ebenso wie das Gehäuse kompliziert aufgebaut und erlaubt keine Realisierung der Tauchpumpe mit bisher üblichen Bauformen.Such submersible pumps are usually switched on directly via electrical switches, which are actuated separately or preferably with the removal fitting can be coupled. In the latter case, the actuation of the removal fitting the electric switch is closed and the submersible pump switched on. DE 33 44 765 A1 discloses a submersible pump arrangement of the beginning mentioned type, in which the pressure switch in the form of a membrane switch housed in the housing of the submersible pump itself. In the output channel there is a check valve in the form of a flap valve. immediate downstream of the check valve is one with a pressure chamber of the Membrane switch communicating opening provided with a frontal Cover piece of the cylindrical housing is formed. The membrane is here Part of a plastic piece that is shaped to make it a sealed passage the power cable, the diaphragm, the check valve and the seal forms between the housing and the cover part. This part is just like that Housing complicated structure and does not allow realization of the submersible pump with previously common designs.

Der Erfindung liegt daher die Problemstellung zugrunde, eine Tauchpumpenanordnung der eingangs erwähnten Art so auszubilden, dass die Bauform herkömmlicher Tauchpumpen ohne Druckschalter im Wesentlichen beibehalten werden kann.The invention is therefore based on the problem, a submersible pump assembly of the type mentioned above in such a way that the design conventional Submersible pumps without pressure switch are essentially maintained can.

Ausgehend von dieser Problemstellung ist erfindungsgemäß eine Tauchpumpenanordnung der eingangs erwähnten Art dadurch gekennzeichnet, dass der Druckschalter in einem Gehäuseteil angeordnet ist, das als separates Teil fest und abgedichtet mit einem herkömmlichen Gehäuseteil der Tauchpumpe ohne Druckschalter verbunden ist, dem das Gehäuseteil des Druckschalters auf einer Auslauftülle des Ausgangskanals des Gehäuseteils der Tauchpumpe aufgesetzt ist, wobei durch einen Zwischenraum ein Druckkanal ausgebildet ist, mit dem der Druckschalter kommuniziert und dass eine abgedichtete Kabeldurchführung zwischen den Gehäuseteilen vorgesehen ist Based on this problem is inventively a submersible pump assembly of the type mentioned above, characterized in that the pressure switch is arranged in a housing part, which is fixed and sealed as a separate part with a conventional housing part of the submersible pump without pressure switch is connected to the housing part of the pressure switch on an outlet spout the outlet channel of the housing part of the submersible pump is placed, wherein a pressure channel is formed by a gap with which the Pressure switch communicates and that a sealed cable gland between the housing parts is provided

Erfindungsgemäß ist der Druckschalter somit in einem Gehäuseteil angeordnet, das als separates Teil fest und abgedichtet mit einem herkömmlichen Gehäuseteil der Tauchpumpe ohne Druckschalter verbunden ist, wobei in einer besonderen konstruktiven Ausgestaltung das Gehäuseteil des Druckschalters auf einer Auslauftülle des Ausgangskanals des Gehäuseteils der Tauchpumpe aufgesetzt ist und der Druckkanal durch einen Zwischenraum ausgebildet ist. Hierdurch ist es möglich, die bisherigen Gehäuse der Tauchpumpen ohne Druckschalter mit nur geringen Modifikationen durch die in das Gehäuse integrierte Druckschalteranordnung zu ergänzen, ohne die Fertigung der Tauchpumpe stark umstellen zu müssen.According to the invention, the pressure switch is thus arranged in a housing part, as a separate part and sealed with a conventional housing part the submersible pump is connected without pressure switch, being in a special constructive embodiment, the housing part of the pressure switch on an outlet spout the output channel of the housing part of the submersible pump is placed and the pressure channel is formed by a gap. This is it possible, the previous housing submersible pumps without pressure switch with only minor modifications by the integrated pressure switch assembly in the housing to supplement, without changing the production of the submersible pump to have to.

Im Rahmen der vorliegenden Erfindung kann der Druckschalter ein üblicherweise verwendeter Membranschalter, aber auch mit einem abgedichtet geführten Kolben gebildet sein. Möglich ist ferner, den Druckschalter als ein elektrisches Ausgangssignal abgebenden Drucksensor auszubilden, dessen Ausgang mit einem elektrischen Schalter verbunden ist. Auf diese Weise wird der Schaltvorgang des elektrischen Schalters elektronisch durch das Ausgangssignal des Drucksensors gesteuert.In the context of the present invention, the pressure switch can be a customary used membrane switch, but also with a sealed guided piston be formed. It is also possible, the pressure switch as an electrical output signal emit the issuing pressure sensor whose output with a electrical switch is connected. In this way, the switching of the electronic switch by the output signal of the pressure sensor controlled.

Die vorliegende Erfindung eignet sich selbstverständlich auch für eine kaskadierte Anordnung mehrerer Tauchpumpen, wobei der Druckschalter dann mit dem Ausgangskanal der letzten Tauchpumpe der Kaskade kommuniziert. Of course, the present invention is also suitable for a cascaded one Arrangement of several submersible pumps, the pressure switch then with the output channel the last submersible pump of the cascade communicates.

Die Erfindung soll im folgenden anhand eines in der Zeichnung in einem Vertikalschnitt dargestellten Ausführungsbeispiels erläutert werden.The invention will be described below with reference to a in the drawing in a vertical section illustrated embodiment will be explained.

Die Zeichnung lässt ein Gehäuse 1 erkennen, das aus einem ersten Gehäuseteil 2 und einem zweiten Gehäuseteil 3 besteht. In dem ersten Gehäuseteil 2 ist ein Antriebsmotor 4 in einer wasserdichten Innenkammer gelagert, in die ein Kabel 5 mit zwei Adern 6, 6' abgedichtet eingeführt ist. Am unteren Stirnende ist eine Abtriebswelle 7 des Antriebsmotors 4 durch eine Dichtung 8 aus der Kammer des Antriebsmotors 4 heraus geführt und ragt in eine Druckkammer 9, die mit einer zentralen Einlauföffnung 10 nach unten offen ist. Im Bereich der Druckkammer 9 ist auf die Abtriebswelle 7 ein Pumpenrad 11 in Form eines Flügelrades aufgebracht. Die Druckkammer steht in Verbindung mit einem die Kammer des Antriebsmotors 4 umgebenden geschlossenen Ringraum 12, sodass das durch die Einlauföffnung 10 einfließende Wasser durch das Pumpenrad 11 auch in den Ringraum 12 gedrückt wird und so zur Kühlung des Antriebsmotors 4 beiträgt.The drawing shows a housing 1, which consists of a first housing part 2 and a second housing part 3. In the first housing part 2 is a Drive motor 4 mounted in a waterproof inner chamber into which a cable. 5 introduced with two wires 6, 6 'sealed. At the lower front end is a Output shaft 7 of the drive motor 4 through a seal 8 from the chamber led out of the drive motor 4 and projects into a pressure chamber 9, with a central inlet opening 10 is open at the bottom. In the area of the pressure chamber 9 is on the output shaft 7, an impeller 11 in the form of an impeller applied. The pressure chamber communicates with a chamber the drive motor 4 surrounding the closed annular space 12, so that the through the inlet opening 10 inflowing water through the impeller 11 also is pressed into the annular space 12 and so contributes to the cooling of the drive motor 4.

Ausgangsseitig ist der Druckraum 9 an einem radialen Ende mit einem sich axial erstreckenden Ausgangskanal 13 verbunden, in den ein Rückschlagventil 14 eingesetzt ist. Das obere Ende des Ausgangskanals 13 bildet eine zylindrische Tülle 15, auf die eine Schlauchleitung 16 aufschiebbar wäre, wenn eine herkömmliche Tauchpumpe ohne das zweite Gehäuseteil 3 eingesetzt würde.On the output side, the pressure chamber 9 at a radial end with an axially extending output channel 13, in which a check valve 14 is inserted is. The upper end of the outlet channel 13 forms a cylindrical spout 15, to which a hose 16 would be pushed, if a conventional Submersible pump would be used without the second housing part 3.

Erfindungsgemäß ist das zweite Gehäuseteil 3 auf das erste Gehäuseteil 2 aufgesetzt, und zwar mit einem zylindrischen Anschlussstück 17, das abgedichtet über die Tülle 15 unter Ausbildung eines Zwischenraums 18 geschoben ist, in den ein horizontaler Druckkanal 19 mündet. Der horizontale Druckkanal 19 endet an einer stufenförmigen Durchmessererweiterung, an der eine Membran 20 so befestigt ist, dass sie den Druckkanal 19 einseitig verschließt. Die Membran 20 wird durch ein hohlzylindrisches Stück 21 des zweiten Gehäuseteils 3 am äußeren Rand gehalten und festgelegt. Mit der Membran 20 ist ein Schaltstößel 22 verbunden, der in einem elektrischen Schalter 22' einen Schaltvorgang auslöst. According to the invention, the second housing part 3 is placed on the first housing part 2, with a cylindrical connector 17 which is sealed is pushed over the nozzle 15 to form a gap 18, in a horizontal pressure channel 19 opens. The horizontal pressure channel 19 ends at a stepped diameter enlargement, at which a membrane 20 so is attached, that it closes the pressure channel 19 on one side. The membrane 20 is replaced by a hollow cylindrical piece 21 of the second housing part 3 at the outer Edge held and set. With the membrane 20 is a switch plunger 22nd connected, which triggers a switching operation in an electrical switch 22 '.

Die Anordnung aus Membran 20, Schaltstößel 22 und elektrischen Schalter 22' bildet einen Druckschalter 23.In den Druckschalter 23 läuft die Ader 6' hinein und eine Ader 6" hinaus, die mit einem Anschluss des Antriebsmotors 4 verbunden ist. Mit einem zweiten Anschluss des Antriebsmotors 4 ist die Ader 6 des Kabels 5 verbunden. Demgemäß wird dem Antriebsmotor 4 ein Versorgungsstrom nur zugeführt, wenn der Schalter 22' geschlossen ist. Der Schalter 22' ist geschlossen, also stromleitend, wenn der Druck in dem Ausgangskanal 13 unter einer ersten Ausgangsdruckschwelle liegt. Steigt der Druck aufgrund der Betätigung des Pumpenrades 11 über die zweite Ausgangsdruckschwelle an, wird also die Membran 20 von ihrer Auflagefläche weggebogen, schaltet der Schalter 22' so, dass eine stromleitende Verbindung zwischen den Adern 6', 6" unterbrochen wird, sodass dem Antriebsmotor 4 kein weiterer Versorgungsstrom zugeleitet wird und er stehenbleibt.The arrangement of membrane 20, switch plunger 22 and electrical switch 22 ' forms a pressure switch 23.In the pressure switch 23, the wire 6 'runs into it and a wire 6 "connected to a terminal of the drive motor 4 is. With a second connection of the drive motor 4, the core 6 of the Cable 5 connected. Accordingly, the drive motor 4 becomes a supply current supplied only when the switch 22 'is closed. The switch 22 'is closed, that is conducting, when the pressure in the output channel 13 below a first output pressure threshold is. If the pressure increases due to the operation the pump wheel 11 via the second output pressure threshold, so is the membrane 20 bent away from its support surface, the switch 22 'switches so that a current-conducting connection between the wires 6 ', 6 "interrupted is, so that no further supply current supplied to the drive motor 4 and he stops.

Der Aufbau des Gehäuses 1 mit den beiden Gehäuseteilen 2, 3, wobei das Gehäuseteil 2 dem Gehäuse einer herkömmlichen Tauchpumpe weitgehend entspricht, ermöglicht durch das Ansetzen des zweiten Gehäuseteils 3 eine Nachrüstung einer herkömmlichen Tauchpumpe mit der Anordnung des Druckschalters 23 in einem wasserdichten Gehäuse, wodurch eine gemeinsam handhabbare und keinen Verdrahtungsaufwand erfordernde Montage der gesamten Tauchpumpenanordnung ermöglicht wird.The structure of the housing 1 with the two housing parts 2, 3, wherein the housing part 2 largely corresponds to the housing of a conventional submersible pump, allows by attaching the second housing part 3, a retrofit a conventional submersible pump with the arrangement of the pressure switch 23 in a watertight housing, creating a jointly manageable and No wiring required installation of the entire submersible pump assembly is possible.

Die Adern 6', 6" sind in einem Teil des Gehäuseteils 3 geführt, das zur Bildung einer abgedichteten Kabeldurchführung 24 abgewinkelt und abgedichtet durch eine obere Stirnwand des ersten Gehäuseteils 2 hindurchgeführt ist.The wires 6 ', 6 "are guided in a part of the housing part 3, the formation a sealed cable gland 24 angled and sealed by an upper end wall of the first housing part 2 is passed.

Obwohl das Haupteinsatzgebiet der erfindungsgemäßen Tauchpumpenanordnung in der Frischwasserversorgung liegt, ist es ohne weiteres ersichtlich, dass die erfindungsgemäße Tauchpumpenanordnung auch für die Förderung anderer Flüssigkeiten geeignet ist.Although the main application of the submersible pump assembly according to the invention is in the fresh water supply, it is readily apparent that the Submersible pump assembly according to the invention also for the promotion of other liquids suitable is.

Claims (5)

  1. Submersible pump arrangement, in particular as part of a fresh-water supply from a fresh-water storage tank via a hoseline arrangement to at least one extraction fitting, with at least one submersible pump which has in a casing (1) of watertight design an electric drive motor (4) for a pump impeller (11) in an open pressure chamber (9), from which an outlet duct (13) leads to a hoseline (16), and with a pressure switch (23) which switches on the submersible pump when a first outlet-pressure threshold is undershot and switches off the submersible pump when a second outlet-pressure threshold is overshot and which, communicating with the outlet duct (13), is integrated in a sealed-off manner into the casing (1), connecting lines (6, 6', 6") running between the drive motor (4) and the pressure switch (23) within the casing (1), characterized in that the pressure switch (23) is arranged in a casing part (3) which, as a separate part, is connected firmly and in a sealed-off manner to a conventional casing part (2) of the submersible pump without a pressure switch (23), to which casing part the casing part (3) of the pressure switch (23) is attached on an outflow socket (15) of the outlet duct (13) of the casing part (2) of the submersible pump, an interspace (18) forming a pressure duct (19), with which the pressure switch (23) communicates, and in that a sealed-off cable leadthrough (24) between the casing parts (2, 3) is provided.
  2. Submersible pump arrangement according to Claim 1, characterized in that the pressure switch (23) is a diaphragm switch.
  3. Submersible pump arrangement according to either one of Claims 1 and 2, characterized in that the pressure switch (23) is formed by a piston led in a sealed-off manner.
  4. Submersible pump arrangement according to either one of Claims 1 and 2, characterized in that the pressure switch (23) is a pressure sensor which emits an electrical output signal and the output of which is connected to an electrical switch.
  5. Submersible pump arrangement according to one of Claims 1 to 4, characterized by a cascaded arrangement of a plurality of submersible pumps, in which the pressure switch (23) communicates with the outlet duct (13) of the last submersible pump of the cascade.
EP01118688A 2000-08-07 2001-08-03 Submersible motor pump unit Expired - Lifetime EP1179681B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10039117 2000-08-07
DE10039117A DE10039117C2 (en) 2000-08-07 2000-08-07 The submersible pump assembly

Publications (3)

Publication Number Publication Date
EP1179681A2 EP1179681A2 (en) 2002-02-13
EP1179681A3 EP1179681A3 (en) 2004-06-09
EP1179681B1 true EP1179681B1 (en) 2005-06-08

Family

ID=7652021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01118688A Expired - Lifetime EP1179681B1 (en) 2000-08-07 2001-08-03 Submersible motor pump unit

Country Status (2)

Country Link
EP (1) EP1179681B1 (en)
DE (2) DE10039117C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20206082U1 (en) * 2002-04-18 2002-09-26 WISY AG Haustechniksysteme, Filtertechnik, 63699 Kefenrod Water supply system
CN107725393A (en) * 2017-09-30 2018-02-23 武汉船用机械有限责任公司 A kind of low temperature immersed pump

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804516A (en) * 1954-02-25 1957-08-27 Gen Electric Sump pump liquid level control switch
US3556677A (en) * 1969-01-22 1971-01-19 Tait Mfg Co The Submersible pump switch assembly
DE3344765A1 (en) * 1983-12-10 1985-06-13 Vdo Adolf Schindling Ag, 6000 Frankfurt Submerged pump
DE4244417A1 (en) * 1992-12-30 1994-07-07 Wilo Gmbh Device for switching a submersible pump on and off
FR2756020B1 (en) * 1996-11-19 1999-01-08 Ksb Sa PUMP WITH FIXED START-UP DEVICE
DE29916897U1 (en) * 1999-09-24 2000-01-20 Reich KG, Regel- und Sicherheitstechnik, 35713 Eschenburg Submersible pump

Also Published As

Publication number Publication date
DE50106435D1 (en) 2005-07-14
DE10039117A1 (en) 2002-02-28
EP1179681A3 (en) 2004-06-09
DE10039117C2 (en) 2003-04-30
EP1179681A2 (en) 2002-02-13

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