IT1250383B - MEASUREMENT AND BALANCING DEVICE OF UNBALANCED LOADS IN THE BASKET OF WASHING MACHINES - Google Patents

MEASUREMENT AND BALANCING DEVICE OF UNBALANCED LOADS IN THE BASKET OF WASHING MACHINES

Info

Publication number
IT1250383B
IT1250383B ITPN910020A ITPN910020A IT1250383B IT 1250383 B IT1250383 B IT 1250383B IT PN910020 A ITPN910020 A IT PN910020A IT PN910020 A ITPN910020 A IT PN910020A IT 1250383 B IT1250383 B IT 1250383B
Authority
IT
Italy
Prior art keywords
drum
imbalance
motor
active power
washing machines
Prior art date
Application number
ITPN910020A
Other languages
Italian (it)
Original Assignee
Zanussi Elettrodomestici
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 Zanussi Elettrodomestici filed Critical Zanussi Elettrodomestici
Priority to ITPN910020A priority Critical patent/IT1250383B/en
Publication of ITPN910020A0 publication Critical patent/ITPN910020A0/en
Priority to EP92104458A priority patent/EP0507138A1/en
Publication of ITPN910020A1 publication Critical patent/ITPN910020A1/en
Application granted granted Critical
Publication of IT1250383B publication Critical patent/IT1250383B/en

Links

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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof
    • 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
    • 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
    • D06F2103/44—Current or voltage
    • D06F2103/46—Current or voltage of the motor driving the drum

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Testing Of Balance (AREA)

Abstract

Dispositivo elettronico di misurazione e di equilibratura di carichi squilibrati nel cesto di macchine lavatrici, prodotti da una distribuzione disuniforme del carico di biancheria nel cesto durante la sua rotazione alle velocità di lavaggio e di centrifugazione. Dispositivo che misura la potenza attiva assorbita dal motore (1) d'azionamento del cesto, potenza che è proporzionale alle sollecitazioni meccaniche e cui è soggetto il cesto stesso, e che confronta (in un comparatore 27) il valore di tale potenza attiva con una potenza di riferimento prestabilita, corrispondente alla potenza attiva assorbita dal motore (1) quando inizia a manifestarsi lo squilibrio del carico nel cesto. In dipendenza di tale confronto, il comparatore (27) provvede ad azionare il motore (1) in modo regolare, se non c'è lo squilibrio, e varia la velocità di rotazione del motore stesso nel caso in cui sia presente tale squilibrio, e tale variazione viene eseguita finché la biancheria si è ridistribuita uniformemente nel cesto e lo squilibrio viene pertanto annullato.Electronic device for measuring and balancing unbalanced loads in the drum of washing machines, produced by a non-uniform distribution of the load of laundry in the drum during its rotation at the washing and spin speed. Device that measures the active power absorbed by the drum drive motor (1), power that is proportional to the mechanical stresses to which the drum itself is subjected, and that compares (in a comparator 27) the value of this active power with a predetermined reference power, corresponding to the active power absorbed by the motor (1) when the load imbalance in the drum starts to appear. Depending on this comparison, the comparator (27) operates the motor (1) on a regular basis, if there is no imbalance, and the rotation speed of the motor itself varies in the event that such imbalance is present, and this variation is carried out until the laundry has been uniformly distributed in the drum and the imbalance is therefore canceled.

ITPN910020A 1991-04-03 1991-04-03 MEASUREMENT AND BALANCING DEVICE OF UNBALANCED LOADS IN THE BASKET OF WASHING MACHINES IT1250383B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITPN910020A IT1250383B (en) 1991-04-03 1991-04-03 MEASUREMENT AND BALANCING DEVICE OF UNBALANCED LOADS IN THE BASKET OF WASHING MACHINES
EP92104458A EP0507138A1 (en) 1991-04-03 1992-03-16 Arrangement for measuring and balancing out-of-balance washloads in the drum of washing machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPN910020A IT1250383B (en) 1991-04-03 1991-04-03 MEASUREMENT AND BALANCING DEVICE OF UNBALANCED LOADS IN THE BASKET OF WASHING MACHINES

Publications (3)

Publication Number Publication Date
ITPN910020A0 ITPN910020A0 (en) 1991-04-03
ITPN910020A1 ITPN910020A1 (en) 1992-10-04
IT1250383B true IT1250383B (en) 1995-04-07

Family

ID=11394513

Family Applications (1)

Application Number Title Priority Date Filing Date
ITPN910020A IT1250383B (en) 1991-04-03 1991-04-03 MEASUREMENT AND BALANCING DEVICE OF UNBALANCED LOADS IN THE BASKET OF WASHING MACHINES

Country Status (2)

Country Link
EP (1) EP0507138A1 (en)
IT (1) IT1250383B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4221772A1 (en) * 1992-07-02 1994-01-05 Licentia Gmbh Registering imbalance in household washing machines - by measuring speed fluctations of the two reversing directions of rotation in washing and rinsing processes, etc.
IT1267586B1 (en) 1994-09-28 1997-02-07 Zanussi Elettrodomestici WASHING MACHINE WITH PERFECTED ANTI-UNBALANCING DEVICE
KR0183903B1 (en) * 1996-07-25 1999-05-15 삼성전자주식회사 Method and circuit for vibration control of a washing machine
IT1288834B1 (en) * 1996-11-18 1998-09-24 Bitron Spa CONTROL SYSTEM FOR A WASHING MACHINE.
US7216049B2 (en) 2004-06-23 2007-05-08 Whirlpool Corporation Method for calibrating current offset and filtering bad data in a system that detects power output
US8930031B2 (en) 2008-12-17 2015-01-06 Fisher & Paykel Appliances Limited Laundry machine
DE102010063346A1 (en) * 2010-12-17 2012-06-21 BSH Bosch und Siemens Hausgeräte GmbH Method for controlling centrifugal flow of laundry treatment machine, particularly front loading horizontal axis washing machine, involves detecting measured values of two measured variables
US10619284B2 (en) 2017-05-26 2020-04-14 Whirlpool Corporation Laundry treating appliance and method of operation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917175A (en) * 1959-01-22 1959-12-15 Gen Electric Unbalance sensing arrangement for machines having a centrifugal liquid extraction step
US4765161A (en) * 1987-10-19 1988-08-23 American Laundry Machinery, Inc. Out-of-balance control for laundry machines

Also Published As

Publication number Publication date
ITPN910020A1 (en) 1992-10-04
EP0507138A1 (en) 1992-10-07
ITPN910020A0 (en) 1991-04-03

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970415