EP0539617A1 - Détection de balourds dans une machine à laver automatique - Google Patents

Détection de balourds dans une machine à laver automatique Download PDF

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Publication number
EP0539617A1
EP0539617A1 EP91118534A EP91118534A EP0539617A1 EP 0539617 A1 EP0539617 A1 EP 0539617A1 EP 91118534 A EP91118534 A EP 91118534A EP 91118534 A EP91118534 A EP 91118534A EP 0539617 A1 EP0539617 A1 EP 0539617A1
Authority
EP
European Patent Office
Prior art keywords
unbalance
microswitch
electric motor
control device
monitoring
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
EP91118534A
Other languages
German (de)
English (en)
Other versions
EP0539617B1 (fr
Inventor
Hans-Wilhelm Dipl.-Ing. Klein
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to ES91118534T priority Critical patent/ES2080876T3/es
Priority to DE59107166T priority patent/DE59107166D1/de
Priority to EP91118534A priority patent/EP0539617B1/fr
Priority to TR92/0993A priority patent/TR26544A/xx
Publication of EP0539617A1 publication Critical patent/EP0539617A1/fr
Application granted granted Critical
Publication of EP0539617B1 publication Critical patent/EP0539617B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48—Preventing or reducing imbalance or noise
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26—Imbalance; Noise level

Definitions

  • the invention relates to an unbalance monitoring for a washing machine according to the preamble of claim 1; Such unbalance monitoring is generally known through obvious prior use.
  • the deflection of the elastically suspended suds container is measured via sensors arranged on the suds container, or the speed fluctuation of the washing drum is detected by a respective sensor and passed on to a monitoring device, which can be part of the regulating or control device; this requires separate connecting lines between the deflection sensor and the monitoring device in the first case, preferably used in analog speed control systems, or in the second case, preferably used in digital speed control systems, an additional evaluation circuit for the speed fluctuations supplied by the existing speed detection device.
  • the control device the different operating speeds in the washing or applying or spinning operation controlled or regulated; At the same time, it also monitors the functionality of the speed detection device, which supplies the actual values of the current speed of the electric motor. If an error occurs in the drive, e.g. a line break or a short circuit is detected, the motor is immediately stopped by the speed control element.
  • unbalance monitoring is provided with a speed detection device consisting of a rotor-side magnetic pole wheel and a stator-side Hall sensor with a digital output
  • the unbalance sensor is advantageously switched into the output line (Out) of the Hall sensor, in particular as a microswitch that opens in the event of an impermissible unbalance.
  • the unbalance sensor can advantageously be designed for the relatively small current or voltage ratios of the signal of the speed detection device and, in particular, can advantageously be carried out on two connecting lines which are otherwise to be additionally provided and to be laid, from a deflection sensor or to an addition which monitors the speed fluctuation
  • the control device can be dispensed with, since the control device can switch off the drive and then attempt to restart only by interrupting the existing connection line to the speed detection device.
  • FIG. 1 shows a AC series motor fed from a single-phase AC network R, M p via a program control unit PS, a regulating or control device RV and a triac semiconductor circuit as an electric motor M with an armature winding AB connected via a commutator and for this purpose via one of the Program control unit PS actuable reversing switch reversible switchable excitation winding EF.
  • the control device RV is essentially set by the program control unit PS speed setpoints and switching cycles with corresponding speeds and switching times for a washing, spin-up and spin operation.
  • FIG. 2 shows a DC series motor as an electric motor, which is fed from a single-phase AC network R, M p via a regulating or control device RV and a triac semiconductor circuit Tr via a commutation choke KD and is arranged in a rectifier bridge circuit D1-D4 and is intended for a washing machine drive M with an armature winding AB connected via a commutator motor and an excitation winding E; F1, F2 lying in series with a winding tap.
  • control with pulse width modulation can also be provided in a manner known per se.
  • a relay R1 that can be operated by the control device RV and a relay R2 that is also control-dependent by the control device RV are provided for reversing the direction of rotation.
  • the regulating or control device RV is given a specific direction of rotation and a specific rotational speed n Soll for the digital regulation provided here as essential target values.
  • a microswitch (MS) is now switched on in the circuit of the tachometer generator TG with the control device St in such a way that the tacho circuit is interrupted when the microswitch (MS) responds by opening when there is an impermissible imbalance, and thus the entire control unit RV Drive deactivated and e.g. can then be started again for a new start-up attempt.
  • FIG. 3 shows, as an alternative to FIGS. 1 and 2, instead of the tachometer generator TG that detects or monitors the speed, a magnetic pole wheel P that is coupled to the rotor shaft of the respective electric motor M and a stator-side Hall sensor IC that is assigned to it and that transmits signals that are proportional to the speed Regulatory or control device RV delivers.
  • an unbalance sensor is in turn switched on in the output line Out of the Hall sensor IC in such a way that when the unbalance sensor responds, the output line is interrupted and, accordingly, the entire output is switched off via the regulating or control device RV.
  • the microswitch MS is integrated in a manner not shown in the electric motor M, in particular by arranging it on its end plate; Since the electric motor is relatively rigidly attached to the tub, the movements are transmitted to the microswitch with sufficient force if the elastically suspended tub is deflected too much.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP91118534A 1991-10-30 1991-10-30 Détection de balourds dans une machine à laver automatique Expired - Lifetime EP0539617B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES91118534T ES2080876T3 (es) 1991-10-30 1991-10-30 Supervisor del desequilibrio en una lavadora automatica.
DE59107166T DE59107166D1 (de) 1991-10-30 1991-10-30 Unwuchtüberwachung für einen Waschautomaten
EP91118534A EP0539617B1 (fr) 1991-10-30 1991-10-30 Détection de balourds dans une machine à laver automatique
TR92/0993A TR26544A (tr) 1991-10-30 1992-10-09 BIR OTOMATIK CAMASIR MAKINESI ICIN OLAN DENKSIZLIK KONTROLü.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91118534A EP0539617B1 (fr) 1991-10-30 1991-10-30 Détection de balourds dans une machine à laver automatique

Publications (2)

Publication Number Publication Date
EP0539617A1 true EP0539617A1 (fr) 1993-05-05
EP0539617B1 EP0539617B1 (fr) 1995-12-27

Family

ID=8207291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91118534A Expired - Lifetime EP0539617B1 (fr) 1991-10-30 1991-10-30 Détection de balourds dans une machine à laver automatique

Country Status (4)

Country Link
EP (1) EP0539617B1 (fr)
DE (1) DE59107166D1 (fr)
ES (1) ES2080876T3 (fr)
TR (1) TR26544A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU745069B2 (en) * 1999-06-24 2002-03-07 Ipso-Usa, Inc. Control system for measuring load imbalance and optimizing spin speed in a laundry washing machine
EP1643027A1 (fr) 2001-08-10 2006-04-05 BSH Bosch und Siemens Hausgeräte GmbH Appareil ménager avec capteur d'accélération

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499534A (en) * 1967-02-22 1970-03-10 Walter Holzer Program-selecting devices for automatic washing machines

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4154898A (en) * 1976-09-27 1979-05-15 The Dow Chemical Company Absorbent articles and methods for their preparation
US4755562A (en) * 1986-06-10 1988-07-05 American Colloid Company Surface treated absorbent polymers
US5124188A (en) * 1990-04-02 1992-06-23 The Procter & Gamble Company Porous, absorbent, polymeric macrostructures and methods of making the same
CA2086031A1 (fr) * 1992-01-28 1993-07-29 Shigeki Ueda Procede de fabrication d'une resine amelioree absorbant l'eau et resine obtenue par ce procede

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499534A (en) * 1967-02-22 1970-03-10 Walter Holzer Program-selecting devices for automatic washing machines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU745069B2 (en) * 1999-06-24 2002-03-07 Ipso-Usa, Inc. Control system for measuring load imbalance and optimizing spin speed in a laundry washing machine
US6418581B1 (en) 1999-06-24 2002-07-16 Ipso-Usa, Inc. Control system for measuring load imbalance and optimizing spin speed in a laundry washing machine
US6564592B2 (en) 1999-06-24 2003-05-20 Ispo-Usa, Inc. Control system for measuring load imbalance and optimizing spin speed in a laundry washing machine
EP1643027A1 (fr) 2001-08-10 2006-04-05 BSH Bosch und Siemens Hausgeräte GmbH Appareil ménager avec capteur d'accélération
US7536881B2 (en) 2001-08-10 2009-05-26 Bsh Bosch Und Siemens Hausgeraete Gmbh Linen treatment device with imbalance monitoring, level monitoring or load monitoring
US7845198B2 (en) 2001-08-10 2010-12-07 Bsh Bosch Und Siemens Hausgeraete Gmbh Linen treatment device with imbalance monitoring, level monitoring or load monitoring
US7958755B2 (en) 2001-08-10 2011-06-14 Bsh Bosch Und Siemens Hausgeraete Gmbh Linen treatment device with imbalance monitoring, level monitoring, or load monitoring

Also Published As

Publication number Publication date
TR26544A (tr) 1995-03-15
EP0539617B1 (fr) 1995-12-27
DE59107166D1 (de) 1996-02-08
ES2080876T3 (es) 1996-02-16

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