EP2162045A2 - Lave-vaisselle comprenant une pompe dotée d'un moteur à aimant permanent sans balai - Google Patents

Lave-vaisselle comprenant une pompe dotée d'un moteur à aimant permanent sans balai

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)
English (en)
Other versions
EP2162045B1 (fr
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/fr
Application granted granted Critical
Publication of EP2162045B1 publication Critical patent/EP2162045B1/fr
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)
  • Washing And Drying Of Tableware (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

La présente invention concerne un lave-vaisselle (1) comprenant au moins un dispositif d'acheminement destiné à acheminer de l'eau de lavage, le dispositif d'acheminement présentant au moins une pompe qui comprend un moteur à aimant permanent sans balai. Le dispositif d'acheminement présente une première pompe (5) et une seconde pompe (6) comportant respectivement un moteur à aimant permanent sans balai, en particulier un moteur à courant continu sans balai (Brushless DC, BLDC), un système électronique de commande (7) commun étant prévu pour la première et la seconde pompe du dispositif d'acheminement. L'invention concerne également un système électronique de commande (7) ainsi qu'une pompe (5, 6; 30).
EP08760800.6A 2007-06-29 2008-06-10 Lave-vaisselle comprenant une pompe dotée d'un moteur à aimant permanent sans balai Active EP2162045B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007030065A DE102007030065A1 (de) 2007-06-29 2007-06-29 Geschirrspülmaschine mit einer Pumpe mit einem bürstenlosen Gleichstrommotor
PCT/EP2008/057241 WO2009003801A2 (fr) 2007-06-29 2008-06-10 Lave-vaisselle comprenant une pompe dotée d'un moteur à aimant permanent sans balai

Publications (2)

Publication Number Publication Date
EP2162045A2 true EP2162045A2 (fr) 2010-03-17
EP2162045B1 EP2162045B1 (fr) 2017-04-12

Family

ID=40075977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08760800.6A Active EP2162045B1 (fr) 2007-06-29 2008-06-10 Lave-vaisselle comprenant une pompe dotée d'un moteur à aimant permanent sans balai

Country Status (7)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11863341B2 (en) 2020-04-24 2024-01-02 Nidec Motor (Qingdao) Corporation Integrated control panel for household appliance and control system

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DE102009002224B4 (de) 2009-04-06 2012-09-06 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltsgerät, insbesondere Geschirrspülmaschine
CN102347719A (zh) 2010-07-28 2012-02-08 德昌电机(深圳)有限公司 电机组件及具有该组件的家用电器
DE102010039612A1 (de) * 2010-08-20 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einer verbesserten Abpumpsequenz
DE102012209826A1 (de) * 2012-06-12 2013-12-12 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner mit einer Pumpe sowie Verfahren zu seinem Betrieb
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US11863341B2 (en) 2020-04-24 2024-01-02 Nidec Motor (Qingdao) Corporation Integrated control panel for household appliance and control system

Also Published As

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

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