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EP2162045A2 - Dishwashing machine with a pump with a brushless permanent magnet motor - Google Patents

Dishwashing machine with a pump with a brushless permanent magnet motor

Info

Publication number
EP2162045A2
EP2162045A2 EP08760800A EP08760800A EP2162045A2 EP 2162045 A2 EP2162045 A2 EP 2162045A2 EP 08760800 A EP08760800 A EP 08760800A EP 08760800 A EP08760800 A EP 08760800A EP 2162045 A2 EP2162045 A2 EP 2162045A2
Authority
EP
European Patent Office
Prior art keywords
pump
permanent magnet
control electronics
dishwasher
brushless
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.)
Granted
Application number
EP08760800A
Other languages
German (de)
French (fr)
Other versions
EP2162045B1 (en
Inventor
Michael Rosenbauer
Hans-Dieter Rossteuscher
Martin Stickel
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2162045A2 publication Critical patent/EP2162045A2/en
Application granted granted Critical
Publication of EP2162045B1 publication Critical patent/EP2162045B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps
    • F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/46—Devices for the automatic control of the different phases of cleaning ; Controlling devices
    • 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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/08—Drain or recirculation pump parameters, e.g. pump rotational speed or current absorbed by the motor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/05—Drain or recirculation pump, e.g. regulation of the pump rotational speed or flow direction

Definitions

  • the invention relates to a dishwasher with at least one conveying device for conveying rinsing liquor, wherein the conveying device has at least one pump with a brushless permanent magnet motor. Furthermore, the invention relates to a control electronics and a pump.
  • Shadow pole motors have the advantage of a high delivery capacity and a defined running direction. It is therefore possible to arrange the outlet tangentially to a pump housing.
  • the problem with the use of shaded-pole motors is the fact that they are mostly so-called dry-runners, as a result of which complex sealing measures are necessary. If the tightness can not be maintained, the pump may fail.
  • synchronous motors are usually so-called wet runners, so that a pump can be constructed in a structurally simpler way, since no such complex sealing measures are necessary. Due to the principle, the direction of rotation of an impeller of the pump can not be determined. This has the advantage, on the one hand, that in the event of blockage, e.g. when pumping out of food residues, by changing the direction of rotation of the impeller there is a chance that the blockage is solvable.
  • the randomly adjusting running direction of the impeller requires a central arrangement of the outlet on the pump housing. Due to the flow dynamics unfavorable arrangement can be provided with synchronous motors low compared to shaded pole low flow rate.
  • Brushless DC, brushless AC, permanent magnet synchronous motors are also known from the prior art, which have been proposed for use in washing machines and dishwashers.
  • the rotor of a brushless permanent magnet motor consists of one or more permanent magnets
  • the stator consists of several electromagnets.
  • the Electromagnets in the stator are commutated via a control electronics, eg with a block or sinusoidal commutation.
  • Brushless permanent magnet motors therefore have the advantage that the direction of rotation of the stator, with which the impeller of the pump is rotatably connected, is adjustable by the control electronics.
  • the capacity of a pump with a brushless permanent magnet motor can be controlled by adjusting the speed of the stator.
  • DE 198 46 831 A1 discloses a method for determining the rotor position of synchronous motors.
  • JP 2004278539 A proposes the use of a pump with a brushless motor in a dishwasher.
  • the dishwasher shown there uses to circulate the rinsing liquor in a closed water cycle and to pump out the rinsing liquor from the dishwasher of a single pump.
  • EP 1 502 535 A2 describes a circulating pump with a brushless motor, with which the fluid flow in a dishwasher can be controlled.
  • JP 2001276479 A discloses a brushless motor pump having an axially disposed inlet and an outlet tangentially disposed on the pump housing.
  • a dishwasher with at least one conveying device for conveying rinsing liquor, the conveying device having at least one pump with a brushless permanent magnet motor, which comprises
  • pumps with a brushless permanent magnet motor allows substantial hydraulic improvements in a dishwasher water cycle. This is realized essentially by an optimizable shape of a pump housing of the pump. Due to this, pumps with a brushless permanent magnet motor achieve a higher delivery rate, which is additionally freely adjustable by the speed. Since pumps with a brushless permanent magnet motor are so-called wet runners, costly sealing measures of the pump are eliminated.
  • motors with brushless permanent magnet motors are each assigned their own control electronics. By the inventive approach, the first and the second pump to assign a common control electronics, however, the higher costs can be partially compensated.
  • the control electronics is designed to operate the first and the second pump of the conveyor alternately. It is therefore sufficient to provide the necessary for the control of the brushless permanent magnet motor components, for example, a bridge circuit of MOS-FET transistors IGBT (Insulated Gate Bipolar Transistor) or other switching elements, only a single time and alternatively to control the first or the second pump. A simultaneous operation of the first and the second pump is not provided.
  • the term of the alternating operation of the first and the second pump of the conveyor is to be understood in the context of the present invention that between the operation of the one and then the other pump, an arbitrarily long period may exist, in which neither of the two pumps is operated. On the other hand, however, should also include the possibility that immediately after the end of the operation of a pump, the other pump can be operated.
  • the second pump is a circulation pump of the dishwasher, with which the wash liquor is conveyed into a closed water cycle of the dishwasher.
  • the control electronics comprises a converter electronics for driving and feeding the conveyor.
  • control electronics is adapted to detect the position of the rotor of the brushless permanent magnet motor and to change the direction of rotation of the rotor upon detection of a deviating from a desired speed or a desired speed range actual speed.
  • the detection of the position of the rotor of the brushless permanent magnet motor is in this case possible by design without additional sensor device.
  • the position of the rotor can e.g. be measured via a retroactive induction voltage or via the resulting current.
  • the determination of the rotor position is known in principle to those skilled in the art, so that at this point a detailed description is dispensed with. Based on this information, the control electronics is able to detect a deviation of the rotational speed from the target rotational speed or the target rotational speed range.
  • a blockage e.g. may be caused in the drain pump by pumped residual food or the like.
  • control electronics is adapted to make a turn off the first and / or the second pump when a predetermined time has elapsed since the start of the first and / or the second pump.
  • control electronics is adapted to make a turn off the first and / or the second pump when a predetermined speed criterion is met.
  • the speed criterion can hereby
  • the speed criterion may be the detection of a speed increase by a predetermined speed difference.
  • This approach is based on the finding that the speed increases as soon as air is pumped by the pump, i. the actual conveying process of the rinsing liquor is completed.
  • the first and / or the second pump have an inlet arranged centrally and axially with respect to the shaft of an impeller and an outlet arranged tangentially on a housing of the first and / or second pump.
  • the tangentially arranged on the housing outlet a significant improvement of the hydraulic conditions is achieved.
  • a pump having a brushless permanent magnet motor can achieve higher output as compared with a conventional pump (be it a pump with a split motor or a synchronous motor).
  • control electronics which is designed for use in a dishwasher machine described above and a pump.
  • Fig. 1 is a schematic representation of a dishwasher according to the invention.
  • Fig. 2 is a schematic representation of a usable in the dishwasher according to the invention pump with a brushless permanent magnet motor in a cross section.
  • FIG. 1 shows a cross-sectional illustration of a dishwasher 1 according to the invention in a schematic form.
  • This has a washing container 2 in a known manner.
  • two spray arms 3, 4 are arranged in a known manner, which are associated in a known manner, not shown baskets.
  • the rinsing liquor impinging on the ware also not shown is supplied from a rinsing tank 16 to a sump 17.
  • the pump pot 17 is connected on the output side via a line 12 or 13 to a drain pump 5 or to a circulating pump 6.
  • the outlet of the circulation pump 6 is connected in a known manner via a line 8 and 9 with the spray arm 3 and 4 respectively.
  • An outlet of the drain pump 5 is connected to an outlet 20 of the dishwasher, so that the conveyed from the drain pump 5, provided with impurities rinsing liquid via a line 18 to one in a wall 21 located house connection 19 can be promoted, with a predetermined height difference between the outlet 20 and house connection 19 is overcome.
  • the operation and the control of the drain pump 5 and the circulation pump 6 takes place in accordance with a common control electronics 7.
  • This is coupled via a control line 14 to the drain pump 5 and a control line 15 to the circulation pump 6.
  • the control electronics include u.a. a converter electronics, e.g. a bridge circuit for driving and feeding the drain pump 5 or the circulation pump 6.
  • the converter electronics is provided only once in the control electronics 7. This is sufficient because the drain pump 5 or the circulation pump 6 are never operated simultaneously, but alternately in accordance with the program control unit.
  • FIG. 2 is a schematic representation of an exemplary structure of a pump 30 with a (not shown) brushless permanent magnet motor is shown.
  • the pump 30 may represent the drain pump 5 and / or the circulating pump 6.
  • permanent magnet motors in principle, all known types are contemplated, such as e.g. brushless DC motors (BLDC), brushless AC motors (BLAC) or permanent magnet synchronous motors (PMSM).
  • BLDC brushless DC motors
  • BLAC brushless AC motors
  • PMSM permanent magnet synchronous motors
  • brushless DC motors are used.
  • a pump housing 35 is provided with an inlet 31 arranged axially to a shaft of an impeller 33 and a tangentially arranged outlet 32. With A the direction of rotation of the impeller 33 is marked. With B is the direction of rotation A achieved during operation of the pump 30 in the flow direction.
  • the speed of the impeller 33 is inherently freely adjustable by the control electronics, such an arrangement has only small hydraulic resistances to be overcome at the outlet, so that the pump 30 has a high delivery capacity compared to conventional pumps.
  • This can be further improved by the shape of the exemplary four wings 34 of the impeller 33.
  • the optimum number and shape of the wings 34 can be determined by known means by simulations.
  • House connection 19 could be placed in the wall 21 elsewhere. On the other hand, if the height difference between the outlet 20 of the dishwasher and the domestic connection 19 remains the same as it is conventional
  • the structural conditions do not permit the provision of an outlet arranged tangentially on the pump housing, it is also possible to arrange the outlet elsewhere, e.g. centrally arranged to provide.
  • the present invention thus provides a dishwasher which is more economical to manufacture in addition to improved operating characteristics.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

The invention relates to a dishwashing machine (1) having at least one conveying unit for conveying washing detergent, wherein the conveying unit has at least one pump with a brushless permanent magnet motor. The conveying unit has a first pump (5) and a second pump (6), each with a brushless permanent magnet motor, particularly a brushless direct current motor (Brushless DC, BLDC), and a shared controller electronic device (7) is provided for the first and the second pump of the conveying unit. The invention also relates to a controller electronic device (7) and a pump (5, 6; 30).

Description

Geschirrspülmaschine mit einer Pumpe mit einem bürstenlosen Dishwasher with a pump with a brushless

PermanentmagnetmotorPermanent magnet motor

Die Erfindung betrifft eine Geschirrspülmaschine mit zumindest einer Fördereinrichtung zum Fördern von Spülflotte, wobei die Fördereinrichtung zumindest eine Pumpe mit einem bürstenlosen Permanentmagnetmotor aufweist. Ferner betrifft die Erfindung eine Ansteuerelektronik sowie eine Pumpe.The invention relates to a dishwasher with at least one conveying device for conveying rinsing liquor, wherein the conveying device has at least one pump with a brushless permanent magnet motor. Furthermore, the invention relates to a control electronics and a pump.

Pumpen von Fördereinrichtungen von Geschirrspülmaschinen sind üblicherweise als Spaltpolmotoren oder Synchronmotoren ausgeführt. Spaltpolmotoren weisen den Vorteil einer hohen Förderleistung und einer definierten Laufrichtung auf. Es ist deshalb möglich, den Auslass an einem Pumpengehäuse tangential anzuordnen. Problematisch bei der Verwendung von Spaltpolmotoren ist die Tatsache, dass diese meistens sog. Trockenläufer sind, wodurch aufwendige Dichtungsmaßnahmen notwendig sind. Kann die Dichtigkeit nicht aufrechterhalten werden, so kann es zu einem Ausfall der Pumpe kommen.Pumps of conveyors of dishwashers are usually designed as shaded-pole motors or synchronous motors. Shadow pole motors have the advantage of a high delivery capacity and a defined running direction. It is therefore possible to arrange the outlet tangentially to a pump housing. The problem with the use of shaded-pole motors is the fact that they are mostly so-called dry-runners, as a result of which complex sealing measures are necessary. If the tightness can not be maintained, the pump may fail.

Synchronmotoren hingegen sind meistens sog. Nassläufer, wodurch eine Pumpe konstruktiv einfacher aufgebaut werden kann, da keine so aufwendigen Dichtungsmaßnahmen notwendig sind. Prinzipbedingt kann die Laufrichtung eines Flügelrades der Pumpe nicht festgelegt werden. Dies weist einerseits den Vorteil auf, dass bei einer Blockade, z.B. beim Abpumpen von Speisemittelresten, durch einen Wechsel der Drehrichtung des Flügelrades eine Chance besteht, dass die Blockade lösbar ist. Andererseits bedingt die zufällig sich einstellende Laufrichtung des Flügelrades eine zentrale Anordnung des Auslasses am Pumpengehäuse. Aufgrund der strömungsdynamisch ungünstigen Anordnung kann mit Synchronmotoren eine im Vergleich zu Spaltpolmotoren geringe Förderleistung bereitgestellt werden.On the other hand, synchronous motors are usually so-called wet runners, so that a pump can be constructed in a structurally simpler way, since no such complex sealing measures are necessary. Due to the principle, the direction of rotation of an impeller of the pump can not be determined. This has the advantage, on the one hand, that in the event of blockage, e.g. when pumping out of food residues, by changing the direction of rotation of the impeller there is a chance that the blockage is solvable. On the other hand, the randomly adjusting running direction of the impeller requires a central arrangement of the outlet on the pump housing. Due to the flow dynamics unfavorable arrangement can be provided with synchronous motors low compared to shaded pole low flow rate.

Aus dem Stand der Technik sind auch bürstenlose Permanentmagnetmotoren (Brushless DC, Brushless AC, permanenterregte Synchronmotoren) bekannt, die für den Einsatz in Wasch- und Geschirrspülmaschinen vorgeschlagen wurden. Der Rotor eines bürstenlosen Permanentmagnetmotors besteht aus einem oder mehreren Permanentmagneten, der Stator besteht aus mehreren Elektromagneten. Die Elektromagneten im Stator werden über eine Ansteuerelektronik kommutiert, z.B. mit einer Block- oder Sinuskommutierung. Bürstenlose Permanentmagnetmotoren weisen deshalb den Vorteil auf, dass die Drehrichtung des Stators, mit dem das Flügelrad der Pumpe drehfest verbunden ist, durch die Ansteuerelektronik einstellbar ist. Weiterhin kann die Förderleistung einer Pumpe mit einem bürstenlosen Permanentmagnetmotor durch die Einstellung der Drehzahl des Stators geregelt werden.Brushless DC, brushless AC, permanent magnet synchronous motors) are also known from the prior art, which have been proposed for use in washing machines and dishwashers. The rotor of a brushless permanent magnet motor consists of one or more permanent magnets, the stator consists of several electromagnets. The Electromagnets in the stator are commutated via a control electronics, eg with a block or sinusoidal commutation. Brushless permanent magnet motors therefore have the advantage that the direction of rotation of the stator, with which the impeller of the pump is rotatably connected, is adjustable by the control electronics. Furthermore, the capacity of a pump with a brushless permanent magnet motor can be controlled by adjusting the speed of the stator.

Die Verwendung von bürstenlosen Permanentmagnetmotoren in Haushaltsgeräten ist aus dem Stand der Technik prinzipiell bekannt.The use of brushless permanent magnet motors in household appliances is known in principle from the prior art.

Aus der DE 195 33 076 A1 ist eine Schaltung zur Ansteuerung eines bürstenlosen Synchronmotors für eine Pumpe in einer Waschmaschine bekannt.From DE 195 33 076 A1 discloses a circuit for driving a brushless synchronous motor for a pump in a washing machine is known.

Die DE 198 46 831 A1 offenbart ein Verfahren zur Ermittlung der Rotorstellung von Synchronmotoren.DE 198 46 831 A1 discloses a method for determining the rotor position of synchronous motors.

JP 2004278539 A schlägt die Verwendung einer Pumpe mit einem bürstenlosen Motor in einer Geschirrspülmaschine vor. Die dort gezeigte Geschirrspülmaschine bedient sich dabei zum Umwälzen der Spülflotte in einem geschlossenen Wasserkreislauf und zum Abpumpen der Spülflotte aus der Geschirrspülmaschine einer einzigen Pumpe.JP 2004278539 A proposes the use of a pump with a brushless motor in a dishwasher. The dishwasher shown there uses to circulate the rinsing liquor in a closed water cycle and to pump out the rinsing liquor from the dishwasher of a single pump.

Die EP 1 502 535 A2 beschreibt eine Umwälzpumpe mit einem bürstenlosen Motor, mit welcher der Fluidfluss in einer Geschirrspülmaschine kontrollierbar ist. Insbesondere ist es möglich, wahlweise den Oberkorb, den Unterkorb oder beide Geschirrkörbe mit Spülflotte zu beaufschlagen.EP 1 502 535 A2 describes a circulating pump with a brushless motor, with which the fluid flow in a dishwasher can be controlled. In particular, it is possible to apply optionally the upper basket, the lower basket or both baskets with rinsing liquor.

Ferner offenbart die JP 2001276479 A eine Pumpe mit einem bürstenlosen Motor, welche einen axial angeordneten Einlass und einen tangential am Pumpengehäuse angeordneten Auslass aufweist.Further, JP 2001276479 A discloses a brushless motor pump having an axially disposed inlet and an outlet tangentially disposed on the pump housing.

Es ist Aufgabe der vorliegenden Erfindung, eine Geschirrspülmaschine anzugeben, die verbesserte Betriebseigenschaften aufweist und gleichzeitig wirtschaftlich herzustellen ist. Diese Aufgabe wird durch eine Geschirrspülmaschine mit den Merkmalen des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen ergeben sich aus den abhängigen Patenansprüchen.It is an object of the present invention to provide a dishwasher, which has improved operating characteristics and at the same time is economical to produce. This object is achieved by a dishwasher with the features of claim 1. Advantageous embodiments result from the dependent patent claims.

Bei einer erfindungsgemäßen Geschirrspülmaschine mit zumindest einer Fördereinrichtung zum Fördern von Spülflotte, wobei die Fördereinrichtung zumindest eine Pumpe mit einem bürstenlosen Permanentmagnetmotor aufweist, umfasst dieIn a dishwasher according to the invention with at least one conveying device for conveying rinsing liquor, the conveying device having at least one pump with a brushless permanent magnet motor, which comprises

Fördereinrichtung eine erste Pumpe und eine zweite Pumpe mit jeweils einem bürstenlosen Permanentmagnetmotor, insbesondere einem bürstenlosenConveying a first pump and a second pump, each having a brushless permanent magnet motor, in particular a brushless

Gleichstrommotor. Ferner ist eine gemeinsame Ansteuerelektronik für die erste und die zweite Pumpe der Fördereinrichtung vorgesehen.DC motor. Furthermore, a common control electronics for the first and the second pump of the conveyor is provided.

Der Einsatz von Pumpen mit einem bürstenlosen Permanentmagnetmotor, insbesondere einem bürstenlosen Gleichstrommotor, erlaubt wesentliche hydraulische Verbesserungen in einem Wasserkreislauf der Geschirrspülmaschine. Dies wird im Wesentlichen durch eine optimierbare Gestalt eines Pumpengehäuses der Pumpe realisiert. Aufgrund dessen erreichen Pumpen mit bürstenlosem Permanentmagnetmotor eine höhere Förderleistung, welche zusätzlich durch die Drehzahl frei einstellbar ist. Da Pumpen mit einem bürstenlosen Permanentmagnetmotor sog. Nassläufer sind, entfallen aufwendige Dichtungsmaßnahmen der Pumpe. Üblicherweise wird Motoren mit bürstenlosen Permanentmagnetmotoren jeweils eine eigene Ansteuerelektronik zugeordnet. Durch das erfindungsgemäße Vorgehen, der ersten und der zweiten Pumpe eine gemeinsame Ansteuerelektronik zuzuordnen, lassen sich die höheren Kosten jedoch zum Teil kompensieren.The use of pumps with a brushless permanent magnet motor, particularly a brushless DC motor, allows substantial hydraulic improvements in a dishwasher water cycle. This is realized essentially by an optimizable shape of a pump housing of the pump. Due to this, pumps with a brushless permanent magnet motor achieve a higher delivery rate, which is additionally freely adjustable by the speed. Since pumps with a brushless permanent magnet motor are so-called wet runners, costly sealing measures of the pump are eliminated. Usually motors with brushless permanent magnet motors are each assigned their own control electronics. By the inventive approach, the first and the second pump to assign a common control electronics, however, the higher costs can be partially compensated.

Gemäß einer Ausgestaltung ist die Ansteuerelektronik dazu ausgebildet, die erste und die zweite Pumpe der Fördereinrichtung alternierend zu betreiben. Es ist deshalb ausreichend, die für die Ansteuerung des bürstenlosen Permanentmagnetmotors notwendigen Komponenten, z.B. eine Brückenschaltung aus MOS-FETs-Transistoren IGBT (Insulated Gate Bipolar Transistor) oder anderen Schaltelementen, lediglich ein einziges Mal vorzusehen und alternativ die erste oder die zweite Pumpe anzusteuern. Ein gleichzeitiger Betrieb der ersten und der zweiten Pumpe ist nicht vorgesehen. Der Begriff des alternierenden Betreibens der ersten und der zweiten Pumpe der Fördereinrichtung ist im Rahmen der vorliegenden Erfindung so zu verstehen, dass zwischen dem Betrieb der einen und dann der anderen Pumpe ein beliebig langer Zeitraum existieren kann, in welchem keine der beiden Pumpen betrieben wird. Andererseits soll jedoch auch die Möglichkeit umfasst werden, dass unmittelbar nach dem Ende des Betriebs einer Pumpe die andere Pumpe betrieben werden kann.According to one embodiment, the control electronics is designed to operate the first and the second pump of the conveyor alternately. It is therefore sufficient to provide the necessary for the control of the brushless permanent magnet motor components, for example, a bridge circuit of MOS-FET transistors IGBT (Insulated Gate Bipolar Transistor) or other switching elements, only a single time and alternatively to control the first or the second pump. A simultaneous operation of the first and the second pump is not provided. The term of the alternating operation of the first and the second pump of the conveyor is to be understood in the context of the present invention that between the operation of the one and then the other pump, an arbitrarily long period may exist, in which neither of the two pumps is operated. On the other hand, however, should also include the possibility that immediately after the end of the operation of a pump, the other pump can be operated.

Während die erste Pumpe eine Laugenpumpe ist, mit welcher die Spülflotte aus dem Spülbehälter förderbar ist, ist die zweite Pumpe eine Umwälzpumpe der Geschirrspülmaschine, mit welcher die Spülflotte in einen geschlossenen Wasserkreislauf der Geschirrspülmaschine förderbar ist. Die Ansteuerelektronik umfasst eine Umrichterelektronik zum Ansteuern und Speisen der Fördereinrichtung.While the first pump is a drain pump, with which the wash liquor from the washing container is conveyed, the second pump is a circulation pump of the dishwasher, with which the wash liquor is conveyed into a closed water cycle of the dishwasher. The control electronics comprises a converter electronics for driving and feeding the conveyor.

Gemäß einer weiteren Ausführungsform ist die Ansteuerelektronik dazu ausgebildet, die Lage des Rotors des bürstenlosen Permanentmagnetmotors zu erfassen und bei Detektion einer von einer Soll-Drehzahl oder von einem Soll-Drehzahlbereich abweichenden Ist-Drehzahl die Drehrichtung des Rotors zu verändern. Die Erfassung der Lage des Rotors des bürstenlosen Permanentmagnetmotors ist hierbei konstruktionsbedingt ohne zusätzliche Sensorvorrichtung möglich. Die Lage des Rotors kann z.B. über eine rückwirkende Induktionsspannung bzw. über den resultierenden Strom gemessen werden. Die Ermittlung der Rotorstellung ist dem Fachmann prinzipiell bekannt, so dass an dieser Stelle auf eine detaillierte Beschreibung verzichtet wird. Anhand dieser Informationen ist die Ansteuerelektronik in der Lage eine Abweichung der Drehzahl von der Soll-Drehzahl oder dem Soll-Drehzahlbereich zu erkennen. Liegt eine derartige Abweichung vor, so lässt dies auf eine Blockade schließen, die z.B. in der Laugenpumpe durch abzupumpende Speisemittelreste oder Ähnliches hervorgerufen sein kann. Durch eine Änderung der Drehrichtung, z.B. ein alternierendes Ändern der Drehrichtung, welche durch die Ansteuerelektronik gezielt gesteuert werden kann, ist es möglich, eine derartige Blockade der Pumpe zu lösen.According to a further embodiment, the control electronics is adapted to detect the position of the rotor of the brushless permanent magnet motor and to change the direction of rotation of the rotor upon detection of a deviating from a desired speed or a desired speed range actual speed. The detection of the position of the rotor of the brushless permanent magnet motor is in this case possible by design without additional sensor device. The position of the rotor can e.g. be measured via a retroactive induction voltage or via the resulting current. The determination of the rotor position is known in principle to those skilled in the art, so that at this point a detailed description is dispensed with. Based on this information, the control electronics is able to detect a deviation of the rotational speed from the target rotational speed or the target rotational speed range. If there is such a deviation, this indicates a blockage, e.g. may be caused in the drain pump by pumped residual food or the like. By changing the direction of rotation, e.g. an alternating change of the direction of rotation, which can be selectively controlled by the control electronics, it is possible to solve such a blockage of the pump.

Gemäß einer weiteren Ausführungsform ist die Ansteuerelektronik dazu ausgebildet, ein Ausschalten der ersten und/oder der zweiten Pumpe vorzunehmen, wenn eine vorgegebene Zeit seit Anlauf der ersten und/oder der zweiten Pumpe verstrichen ist. Mit anderen Worten bedeutet dies, dass die erste und/oder die zweite Pumpe mit einer Zeitsteuerung betrieben werden können, wobei ein gezieltes Ein- und Ausschalten zu definierten Zeitpunkten ermöglicht ist. Dies ist im Gegensatz dazu bei Pumpen mit einem Synchronmotor nicht möglich, da dort aufgrund der sich zufällig einstellenden Drehrichtung des Rotors eine unbestimmte Zeit bis zum Anlaufen der Pumpe vergehen kann. Aufgrund dessen werden Geschirrspülmaschinen mit Synchronmotoren über die Zeitdauer des eigentlichen Pumpvorganges hinaus eine zusätzliche Zeit, z.B. 30 Sekunden, betrieben. Durch die Einsparung dieser zusätzlichen Betriebsdauer der Pumpe lässt sich eine Energieeinsparung und Geräuschreduzierung realisieren.According to a further embodiment, the control electronics is adapted to make a turn off the first and / or the second pump when a predetermined time has elapsed since the start of the first and / or the second pump. In other words, this means that the first and / or the second pump with a Time control can be operated, with a targeted switching on and off is possible at defined times. In contrast, this is not possible with pumps with a synchronous motor, since there may be an indefinite period of time until the pump starts up due to the randomly setting direction of rotation of the rotor. Due to this, dishwashers with synchronous motors are operated beyond the duration of the actual pumping process for an additional time, for example 30 seconds. By saving this additional operating time of the pump, an energy saving and noise reduction can be realized.

In einer anderen Ausführungsform ist die Ansteuerelektronik dazu ausgebildet, ein Ausschalten der ersten und/oder der zweiten Pumpe vorzunehmen, wenn ein vorgegebenes Drehzahlkriterium erfüllt ist. Das Drehzahlkriterium kann hierbei einIn another embodiment, the control electronics is adapted to make a turn off the first and / or the second pump when a predetermined speed criterion is met. The speed criterion can hereby

Überschreiten einer vorgegebenen Drehzahl sein. Alternativ kann das Drehzahlkriterium die Detektion einer Drehzahlerhöhung um eine vorgegebene Drehzahldifferenz sein.Be exceeding a predetermined speed. Alternatively, the speed criterion may be the detection of a speed increase by a predetermined speed difference.

Dieser Vorgehensweise liegt die Erkenntnis zugrunde, dass die Drehzahl ansteigt, sobald durch die Pumpe Luft gefördert wird, d.h. der eigentliche Fördervorgang der Spülflotte beendet ist.This approach is based on the finding that the speed increases as soon as air is pumped by the pump, i. the actual conveying process of the rinsing liquor is completed.

Gemäß einer weiteren bevorzugten Ausgestaltung weisen die erste und/oder die zweite Pumpe eine zentral und axial zur Welle eines Flügelrads angeordneten Einlass und einen tangential an einem Gehäuse der ersten und/oder zweiten Pumpe angeordneten Auslass auf. Insbesondere durch den tangential an dem Gehäuse angeordneten Auslass wird eine wesentliche Verbesserung der hydraulischen Verhältnisse erzielt. Hierdurch kann eine Pumpe mit einem bürstenlosen Permanentmagnetmotor im Vergleich zu einer herkömmlichen Pumpe (sei es eine Pumpe mit einem Spaltmotor oder mit einem Synchronmotor) eine höhere Förderleistung erzielen.In accordance with a further preferred embodiment, the first and / or the second pump have an inlet arranged centrally and axially with respect to the shaft of an impeller and an outlet arranged tangentially on a housing of the first and / or second pump. In particular, by the tangentially arranged on the housing outlet a significant improvement of the hydraulic conditions is achieved. As a result, a pump having a brushless permanent magnet motor can achieve higher output as compared with a conventional pump (be it a pump with a split motor or a synchronous motor).

Aufgrund der Möglichkeit, eine Pumpe mit einem bürstenlosen Permanentmagnetmotor mit einer definierten Drehzahl betreiben zu können, besteht zudem die Möglichkeit, das mit dem Rotor drehfest verbundene Flügelrad strömungsgünstiger ausgestalten zu können. Hierdurch ist eine weitere Erhöhung der Förderleistung möglich.Due to the possibility of being able to operate a pump with a brushless permanent magnet motor at a defined speed, it is also possible to make the impeller rotatably connected with the rotor more streamlined. As a result, a further increase in the capacity is possible.

Diese Maßnahmen erlauben es, einen höheren Druck am Auslass der Pumpe zu generieren. Dadurch kann einerseits in dem geschlossenen Wasserkreislauf durch die Umwälzpumpe geförderte Spülflotte mit einem höheren Druck auf das Spülgut gespritzt werden, wodurch sich die Reinigungswirkung erhöht. Andererseits kann bei einer entsprechend ausgestalteten Laugenpumpe eine, im Vergleich zu Pumpen mit Spaltpoloder Synchronmotoren, größere Förderhöhe erzielt werden. Dies bedeutet, der Haushaltsanschluss kann gegenüber dem derzeitigen Stand der Technik weiter nach oben verlegt werden. Andererseits kann jedoch auch die Dimensionierung der Pumpe an die derzeit zu erreichenden Förderhöhen angepasst werden, wodurch die Fertigungskosten der erfindungsgemäßen Geschirrspülmaschine gesenkt werden können.These measures make it possible to generate a higher pressure at the outlet of the pump. As a result, on the one hand in the closed water cycle through the Circulating pump funded rinse liquor are sprayed with a higher pressure on the items to be washed, thereby increasing the cleaning effect. On the other hand, in a suitably designed drain pump, a larger delivery head can be achieved compared to pumps with shaded pole or synchronous motors. This means that the household connection can be moved upwards compared to the current state of the art. On the other hand, however, the dimensioning of the pump can be adapted to the currently achievable delivery heights, whereby the manufacturing cost of the dishwasher according to the invention can be reduced.

Ferner gehört zur Erfindung eine Ansteuerelektronik, die zur Verwendung in einer oben beschriebenen Geschirrspülermaschine ausgebildet ist sowie eine Pumpe.Further, the invention includes a control electronics, which is designed for use in a dishwasher machine described above and a pump.

Die Erfindung wird nachfolgend anhand der Figuren weitererläutert. Es zeigen:The invention will be explained below with reference to the figures. Show it:

Fig. 1 eine schematische Darstellung einer erfindungsgemäßen Geschirrspülmaschine, undFig. 1 is a schematic representation of a dishwasher according to the invention, and

Fig. 2 eine schematische Darstellung einer in der erfindungsgemäßen Geschirrspülmaschine einsetzbaren Pumpe mit einem bürstenlosen Permanentmagnetmotor in einem Querschnitt.Fig. 2 is a schematic representation of a usable in the dishwasher according to the invention pump with a brushless permanent magnet motor in a cross section.

In Fig. 1 ist in einer Querschnittsdarstellung eine erfindungsgemäße Geschirrspülmaschine 1 in einer schematischen Form dargestellt. Diese weist in bekannter Weise einen Spülbehälter 2 auf. In dem Spülbehälter 2 sind in ebenfalls bekannter Weise zwei Sprüharme 3, 4 angeordnet, die in bekannter Weise nicht dargestellten Geschirrkörben zugeordnet sind. Die auf das ebenfalls nicht dargestellte Spülgut auftreffende Spülflotte wird von einer Spülwanne 16 einem Pumpentopf 17 zugeführt. Der Pumpentopf 17 ist ausgangsseitig über eine Leitung 12 bzw. 13 mit einer Laugenpumpe 5 bzw. mit einer Umwälzpumpe 6 verbunden. Der Auslass der Umwälzpumpe 6 ist in bekannter Weise über eine Leitung 8 bzw. 9 mit dem Sprüharm 3 bzw. 4 verbunden. Ein Auslass der Laugenpumpe 5 ist mit einem Auslass 20 der Geschirrspülmaschine verbunden, so dass die von der Laugenpumpe 5 geförderte, mit Verunreinigungen versehene Spülflüssigkeit über eine Leitung 18 zu einem in einer Wand 21 gelegenen Hausanschluss 19 gefördert werden kann, wobei eine vorgegebene Höhendifferenz zwischen Auslass 20 und Hausanschluss 19 zu überwinden ist.1 shows a cross-sectional illustration of a dishwasher 1 according to the invention in a schematic form. This has a washing container 2 in a known manner. In the washing container 2 two spray arms 3, 4 are arranged in a known manner, which are associated in a known manner, not shown baskets. The rinsing liquor impinging on the ware also not shown is supplied from a rinsing tank 16 to a sump 17. The pump pot 17 is connected on the output side via a line 12 or 13 to a drain pump 5 or to a circulating pump 6. The outlet of the circulation pump 6 is connected in a known manner via a line 8 and 9 with the spray arm 3 and 4 respectively. An outlet of the drain pump 5 is connected to an outlet 20 of the dishwasher, so that the conveyed from the drain pump 5, provided with impurities rinsing liquid via a line 18 to one in a wall 21 located house connection 19 can be promoted, with a predetermined height difference between the outlet 20 and house connection 19 is overcome.

Der Betrieb und die Ansteuerung der Laugenpumpe 5 und der Umwälzpumpe 6 erfolgt nach Maßgabe einer gemeinsamen Ansteuerelektronik 7. Diese ist über eine Steuerleitung 14 mit der Laugenpumpe 5 und über eine Steuerleitung 15 mit der Umwälzpumpe 6 gekoppelt. Die Ansteuerelektronik umfasst u.a. eine Umrichterelektronik, z.B. eine Brückenschaltung, zum Ansteuern und Speisen der Laugenpumpe 5 oder der Umwälzpumpe 6. Die Umrichterelektronik ist dabei lediglich einmal in der Ansteuerelektronik 7 vorgesehen. Dies ist ausreichend, da die Laugenpumpe 5 oder die Umwälzpumpe 6 niemals gleichzeitig, sondern alternierend nach Maßgabe der Programmsteuereinheit betrieben werden.The operation and the control of the drain pump 5 and the circulation pump 6 takes place in accordance with a common control electronics 7. This is coupled via a control line 14 to the drain pump 5 and a control line 15 to the circulation pump 6. The control electronics include u.a. a converter electronics, e.g. a bridge circuit for driving and feeding the drain pump 5 or the circulation pump 6. The converter electronics is provided only once in the control electronics 7. This is sufficient because the drain pump 5 or the circulation pump 6 are never operated simultaneously, but alternately in accordance with the program control unit.

In Fig. 2 ist in einer schematischen Darstellung ein beispielhafter Aufbau einer Pumpe 30 mit einem (nicht dargestellten) bürstenlosen Permanentmagnetmotor dargestellt. Die Pumpe 30 kann dabei die Laugenpumpe 5 und/oder die Umwälzpumpe 6 darstellen. Als Permanentmagnetmotoren kommen prinzipiell alle bekannten Typen in Betracht, wie z.B. bürstenlose Gleichstrommotoren (BLDC), bürstenlose Wechselstrommotoren (BLAC) oder permanenterregte Synchronmotoren (PMSM). Bevorzugt kommen bürstenlose Gleichstrommotoren zum Einsatz. Ein Pumpengehäuse 35 ist mit einem axial zu einer Welle eines Flügelrades 33 angeordneten Einlass 31 und einem tangential angeordneten Auslass 32 versehen. Mit A ist die Drehrichtung des Flügelrades 33 gekennzeichnet. Mit B ist die beim Betrieb der Pumpe 30 in Drehrichtung A erzielte Strömungsrichtung gekennzeichnet. Neben der Tatsache, dass die Drehzahl des Flügelrades 33 prinzipbedingt durch die Ansteuerelektronik frei einstellbar ist, weist eine derartige Anordnung am Auslass nur geringe zu überwindende hydraulische Widerstände auf, so dass die Pumpe 30 im Vergleich zu herkömmlichen Pumpen eine hohe Förderleistung aufweist. Diese kann weiter durch die Form der beispielhaft vier Flügel 34 des Flügelrades 33 verbessert werden. Die optimale Anzahl und Gestalt der Flügel 34 kann mit bekannten Mitteln durch Simulationen ermittelt werden.In Fig. 2 is a schematic representation of an exemplary structure of a pump 30 with a (not shown) brushless permanent magnet motor is shown. The pump 30 may represent the drain pump 5 and / or the circulating pump 6. As permanent magnet motors, in principle, all known types are contemplated, such as e.g. brushless DC motors (BLDC), brushless AC motors (BLAC) or permanent magnet synchronous motors (PMSM). Preferably, brushless DC motors are used. A pump housing 35 is provided with an inlet 31 arranged axially to a shaft of an impeller 33 and a tangentially arranged outlet 32. With A the direction of rotation of the impeller 33 is marked. With B is the direction of rotation A achieved during operation of the pump 30 in the flow direction. In addition to the fact that the speed of the impeller 33 is inherently freely adjustable by the control electronics, such an arrangement has only small hydraulic resistances to be overcome at the outlet, so that the pump 30 has a high delivery capacity compared to conventional pumps. This can be further improved by the shape of the exemplary four wings 34 of the impeller 33. The optimum number and shape of the wings 34 can be determined by known means by simulations.

Die Verwendung einer Umwälzpumpe mit einem bürstenlosen Permanentmagnetmotor ermöglicht deshalb einen höheren, maximal zu erreichenden Druck an den Düsen der Sprüharme, wodurch im Vergleich zu herkömmlichen Geschirrspülmaschinen die Reinigungswirkung verbessert ist. Ist ein zu hoher Druck unerwünscht, z.B. bei empfindlichem Geschirr, so kann dieser durch einfache Drehzahlregelung (Reduktion der Pumpendrehzahl) reduziert werden.The use of a circulation pump with a brushless permanent magnet motor therefore allows a higher, maximum pressure to be reached at the nozzles of the spray arms, which compared to conventional dishwashers the Cleaning effect is improved. If too high a pressure is undesirable, eg with delicate dishes, this can be reduced by simple speed control (reduction of the pump speed).

Die Verwendung einer Laugenpumpe mit einem bürstenlosen Permanentmagnetmotor ermöglicht aufgrund der höheren Förderleistung im Vergleich zu herkömmlichen Pumpen die Überwindung einer größeren Höhendifferenz zwischen dem Auslass 20 derThe use of a brine pump with a brushless permanent magnet motor allows to overcome a larger height difference between the outlet 20 of the. Due to the higher flow rate compared to conventional pumps

Geschirrspülmaschine und dem Hausanschluss 19 in der Wand 21 , wodurch derDishwasher and the house connection 19 in the wall 21, whereby the

Hausanschluss 19 in der Wand 21 an anderer Stelle platziert werden könnte. Bleibt andererseits die Höhendifferenz zwischen dem Auslass 20 der Geschirrspülmaschine und dem Hausanschluss 19 derart bemessen, wie er für herkömmlicheHouse connection 19 could be placed in the wall 21 elsewhere. On the other hand, if the height difference between the outlet 20 of the dishwasher and the domestic connection 19 remains the same as it is conventional

Geschirrspülmaschinen nach dem Stand der Technik ausgelegt ist, so kann dieDishwashers designed according to the prior art, the

Dimensionierung der Laugenpumpe 5 an diese Höhendifferenz angepasst werden.Dimensioning of the drain pump 5 are adapted to this height difference.

Hierdurch ergibt sich eine baulich verkleinerte Laugenpumpe. Neben verringertenThis results in a structurally reduced drainage pump. In addition to decreased

Herstellungskosten steht damit weiterer Bauraum für andere Komponenten in der Geschirrspülmaschine zur Verfügung.Production costs are thus further space for other components in the dishwasher available.

Lassen die baulichen Gegebenheiten das Vorsehen eines tangential am Pumpengehäuse angeordneten Auslasses nicht zu, so ist es auch möglich, den Auslass an anderer Stelle, z.B. zentral angeordnet, vorzusehen.If the structural conditions do not permit the provision of an outlet arranged tangentially on the pump housing, it is also possible to arrange the outlet elsewhere, e.g. centrally arranged to provide.

Die vorliegende Erfindung schafft damit eine Geschirrspülmaschine, die neben verbesserten Betriebseigenschaften wirtschaftlicher herstellbar ist. The present invention thus provides a dishwasher which is more economical to manufacture in addition to improved operating characteristics.

BezugszeichenhsteBezugszeichenhste

1 Geschirrspülmaschine1 dishwasher

2 Spülbehälter2 rinse tanks

3 Sprüharm3 spray arm

4 Sprüharm4 spray arm

5 Pumpe5 pump

6 Pumpe6 pump

7 Ansteuerelektronik7 control electronics

8 Leitung8 line

9 Leitung9 line

12 Leitung12 line

13 Leitung13 line

14 Steuerleitung14 control line

15 Steuerleitung15 control line

16 Spülwanne16 rinse tank

17 Pumpentopf17 pump pot

18 Leitung18 line

19 Hausanschluss19 house connection

20 Auslass20 outlet

21 Wand21 wall

30 Pumpe30 pump

31 Pumpeneinlass31 pump inlet

32 Pumpenauslass32 pump outlet

33 Flügelrad33 impeller

34 Flügel34 wings

35 Pumpengehäuse 35 pump housing

Claims

PATENTANSPRÜCHE 1. Geschirrspülmaschine mit zumindest einer Fördereinrichtung zum Fördern von Spülflotte, wobei die Fördereinrichtung zumindest eine Pumpe mit einem bürstenlosen Permanentmagnetmotor aufweist, dadurch gekennzeichnet, dass die Fördereinrichtung wenigstens eine erste Pumpe (5; 30) und eine zweite Pumpe (6; 30) mit jeweils einem bürstenlosen Permanentmagnetmotor, insbesondere einem bürstenlosen Gleichstrommotor (Brushless DC, BLDC), aufweist und eine gemeinsame Ansteuerelektronik (7) für die insbesondere erste und die zweite Pumpe der Fördereinrichtung vorgesehen ist1. Dishwasher with at least one conveyor for conveying wash liquor, wherein the conveyor has at least one pump with a brushless permanent magnet motor, characterized in that the conveyor at least a first pump (5; 30) and a second pump (6; a brushless permanent magnet motor, in particular a brushless DC motor (brushless DC, BLDC), and a common control electronics (7) for the particular first and the second pump of the conveyor is provided 2. Geschirrspülmaschine nach Anspruch 1 , dadurch gekennzeichnet, dass die Ansteuerelektronik (7) dazu ausgebildet ist, die erste und die zweite Pumpe (5, 6; 30) der Fördereinrichtung alternierend zu betreiben.2. Dishwasher according to claim 1, characterized in that the control electronics (7) is adapted to operate the first and the second pump (5, 6, 30) of the conveyor alternately. 3. Geschirrspülmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die erste Pumpe (5; 30) eine Laugenpumpe ist, mit welcher die Spülflotte aus dem Spülbehälter (2) förderbar ist.3. Dishwasher according to claim 1 or 2, characterized in that the first pump (5; 30) is a drain pump, with which the washing liquor from the washing compartment (2) can be conveyed. 4. Geschirrspülmaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die zweite Pumpe (6; 30) eine Umwälzpumpe ist, mit welcher die Spülflotte in einem geschlossenen Wasserkreislauf der Geschirrspülmaschine (1 ) förderbar ist.4. Dishwasher according to one of the preceding claims, characterized in that the second pump (6; 30) is a circulating pump, with which the rinsing liquor in a closed water cycle of the dishwasher (1) can be conveyed. 5. Geschirrspülmaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Ansteuerelektronik (7) eine Umrichterelektronik zum Ansteuern und Speisen der Fördereinrichtung umfasst. 5. Dishwasher according to one of the preceding claims, characterized in that the control electronics (7) comprises a Umrichterelektronik for driving and food of the conveyor. 6. Geschirrspülmaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Ansteuerelektronik (7) dazu ausgebildet ist, die Lage des Rotors des bürstenlosen Permanentmagnetmotors zu erfassen und bei Detektion einer von einer Soll-Drehzahl oder von einem Soll-Drehzahlbereich abweichenden Ist-Drehzahl die Drehrichtung des Rotors zu verändern.6. Dishwasher according to one of the preceding claims, characterized in that the control electronics (7) is adapted to detect the position of the rotor of the brushless permanent magnet motor and upon detection of a deviating from a target speed or a target speed range actual speed to change the direction of rotation of the rotor. 7. Geschirrspülmaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Ansteuerelektronik (7) dazu ausgebildet ist, ein Ausschalten der ersten und/oder der zweiten Pumpe (5, 6; 30) vorzunehmen, wenn eine vorgegebene Zeit seit Anlauf der ersten und/oder der zweiten Pumpe (5, 6; 30) verstrichen ist.7. Dishwasher according to one of the preceding claims, characterized in that the control electronics (7) is adapted to turn off the first and / or the second pump (5, 6, 30), if a predetermined time since start of the first and / or the second pump (5, 6, 30) has elapsed. 8. Geschirrspülmaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Ansteuerelektronik (7) dazu ausgebildet ist, ein Ausschalten der ersten und/oder der zweiten Pumpe (5, 6; 30) vorzunehmen, wenn ein vorgegebenes Drehzahlkriterium erfüllt ist.8. Dishwasher according to one of the preceding claims, characterized in that the control electronics (7) is adapted to make a turning off of the first and / or the second pump (5, 6, 30) when a predetermined speed criterion is met. 9. Geschirrspülmaschine nach Anspruch 8, dadurch gekennzeichnet, dass das Drehzahlkriterium ein Überschreiten einer vorgegebenen Drehzahl ist.9. Dishwasher according to claim 8, characterized in that the speed criterion is exceeded a predetermined speed. 10. Geschirrspülmaschine nach Anspruch 8, dadurch gekennzeichnet, dass das Drehzahlkriterium die Detektion einer Drehzahlerhöhung um eine vorgegebene10. Dishwasher according to claim 8, characterized in that the speed criterion, the detection of a speed increase by a predetermined Drehzahldifferenz ist.Speed difference is. 11. Geschirrspülmaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die erste und/oder die zweite Pumpe (5, 6; 30) eine zentral und axial zur Welle eines11. Dishwasher according to one of the preceding claims, characterized in that the first and / or the second pump (5, 6, 30) has a central and axial to the shaft of a Flügelrads angeordneten Einlass (31 ) und einen tangential an einem Gehäuse der ersten und/oder zweiten Pumpe (5, 6; 30) angeordneten Auslass (32) aufweisen. Vane arranged inlet (31) and a tangentially to a housing of the first and / or second pump (5, 6; 30) arranged outlet (32). 12. Ansteuerelektronik (7) nach einem der Ansprüche 1 bis 1 1.12. control electronics (7) according to one of claims 1 to 1 1. 13. Pumpe (5, 6 ;30) nach einem der vorherigen Ansprüche 1 bis 11. 13. Pump (5, 6, 30) according to one of the preceding claims 1 to 11.
EP08760800.6A 2007-06-29 2008-06-10 Dishwashing machine with a pump with a brushless permanent magnet motor Active EP2162045B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007030065A DE102007030065A1 (en) 2007-06-29 2007-06-29 Dishwasher with a pump with a brushless DC motor
PCT/EP2008/057241 WO2009003801A2 (en) 2007-06-29 2008-06-10 Dishwashing machine with a pump with a brushless permanent magnet motor

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EP2162045A2 true EP2162045A2 (en) 2010-03-17
EP2162045B1 EP2162045B1 (en) 2017-04-12

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EP08760800.6A Active EP2162045B1 (en) 2007-06-29 2008-06-10 Dishwashing machine with a pump with a brushless permanent magnet motor

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US (1) US8603261B2 (en)
EP (1) EP2162045B1 (en)
CN (1) CN101686791B (en)
DE (1) DE102007030065A1 (en)
PL (1) PL2162045T3 (en)
RU (1) RU2454918C2 (en)
WO (1) WO2009003801A2 (en)

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Also Published As

Publication number Publication date
EP2162045B1 (en) 2017-04-12
US8603261B2 (en) 2013-12-10
CN101686791A (en) 2010-03-31
RU2454918C2 (en) 2012-07-10
WO2009003801A3 (en) 2009-05-14
CN101686791B (en) 2013-02-06
PL2162045T3 (en) 2017-09-29
WO2009003801A2 (en) 2009-01-08
RU2010101735A (en) 2011-08-10
DE102007030065A1 (en) 2009-01-02
US20100186787A1 (en) 2010-07-29

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