US3799348A - Device for the automatic balancing of washing and drying machines - Google Patents

Device for the automatic balancing of washing and drying machines Download PDF

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Publication number
US3799348A
US3799348A US00166502A US16650271A US3799348A US 3799348 A US3799348 A US 3799348A US 00166502 A US00166502 A US 00166502A US 16650271 A US16650271 A US 16650271A US 3799348 A US3799348 A US 3799348A
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US
United States
Prior art keywords
basket
valve
chamber
outlet
driving shaft
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US00166502A
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English (en)
Inventor
L Mazza
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Industrie Zanussi SpA
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Industrie Zanussi SpA
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Publication of US3799348A publication Critical patent/US3799348A/en
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    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets

Definitions

  • ABSTRACT A device for rebalancing the rotary baskets of washing machines and the like, of the kind in which liquid masses are used for balancing the basket.
  • the rear wall of the basket is elastically deformed (for example,
  • the machine should be sturdily anchored to the floor to prevent jerks and displacements of the machine.
  • the slab or the floor should have a specially provided, concrete bedplate, or a bedplate of another materiaLwhich does not impair the safetyofthe building in which the machine should operate.
  • Thismethod for example, is used for many industrial laundry washers and the shortcomings are apparent, such as a high first cost of the structure and all the component parts of the machine,'a high cost for the installation of. the machine, vibrations and noise transferred to the spaces adjacent to that wherethe machine is operative. 1
  • the drawback is the cost of the resilient suspension for dampening, and the supporting structure for them.
  • the object is to suppress the oscillations due to rotor unbalance when the latter is rotated at a high speed.
  • the device according to the present invention is of the kind comprising a rotary basket as mounted in a cantilever fashion on its driving shaft and having peripheral chambers adapted to house a liquid for balancing the abnormal stresses, and more particularly those due to irregular distribution of the linen in the interior of the basket which is rotated at a high speed, said device being characterized in that it comprises a portion of the basket which is elastically deformable under the action of an unbalance of the basket, and is adapted to actuate, by its deformations, mechanical meansto feed said liquid to one or more of said chambers, with said mechanical means being rotatable integrally with the shaft and the basket attached thereto.
  • the elastically deformable portion of the basket is the back wall of the basket, perpendicular to the rotation shaft, or, as an alternative, a portion'of said wall, such as a disc of a deforrnable material which supports the basket.
  • Each chamber is fed, according to the invention, through an inlet valve for each peripheral chamber, whose valve body is integral with the rotary shaft for the basket, while the stem of the movable head of the valve is driven by a member (such as a simple strap) affixed to the deformable wall of the basket with, the outlet port of each chamber being formed in the area nearest to the axis of rotation, in direct communication with the tub which is external of the rotating basket.
  • a member such as a simple strap
  • FIG. 1 shows an axial cross-sectional view of a laundry washing machine according to the invention, with centrifuge.
  • FIG. 2 is a cross-sectional view taken along the line II II of FIG. 1.
  • FIG. 3 is a cross-sectional close up view of the feeding valve and the discharge outlets for an individual balancing chamber
  • FIG. 4 shows a cross-sectional detail view of one of the chambers affixed to the drum and associated with a rubber cavity which.mates the inner walls of the chamber.
  • the device as shown herein essentially comprises a foraminous rotary basket 1, a fixed external tub 2, a front door 4 defined by a hinged door which closes the tub at the front, and a supporting structure 3.
  • the rear wall of the basket I is an elastically deformable metal disc 5, mounted in an overhanging manner on a rigid shaft 6, which is rotated in appropriate bearings 26 and driven by a drive-transfer member such as a sheave or pulley 27.
  • the basket has three or more peripheral chambers or reservoirs, ll, evenly angularly spaced apart along the periphery of the basket (FIG. 2).
  • a port 21 (FIG. 3) opens, through which the head portion of a tubular body 10 of an inlet valve is passed, with the inlet valve formed by an outlet mouth 12 being closed by a movable plug or head 20 mounted on a stem 17 which emerges in a sealtight manner from the rear base of the body 10 and which, by means of a return spring 19, tends to keep the inlet valve normally closed.
  • the tubular body 10 is integrally connected to, and in communication with, a stiff or rigid radial duct 14 which, in turn, communicates with an axial duct 13 to allow the water under pressure coming from the water main through a fixed fitting 25 which is sealtight when rotated, to feed the reservoir 11.
  • a rubber container 24 is inserted in each of the individual reservoirs 11 and is adapted perfectly to match, with its walls, the inner walls of the reservoir.
  • the resilient disc 5 can be replaced, for the ends of balancing, by an annular rubber disc 23 (FIG. 4) which, by being deformed, enables the plate 9 to drive the stem 17 of the inlet valve.
  • FIG. 2 in which the water held in the reservoirs 11 is indicated at 11a, the equilibrium condition is diagrammatically depicted in the most general case where two reservoirs 11 are subjected to the water feed to different degrees, in order to effect balancing.
  • the plate 9 is set back and allows the return spring 19 to close the valves 12-20.
  • a device for the automatic balancing of washing and centrifuging machines of'the type including a horizontal driving shaft, a rotary basket, said basket having an elastically deformable vertical rear wall, said rear wall being mounted on the driving shaft whereby the basket is carried in a cantilever manner on the driving shaft, and means within the basket defining peripheral chambers for receiving an amount of liquid for balancing the unbalancing stresses due to an irregular distribution of the.
  • valve means for feeding liquid to at least one of the chambers, means operably mounting the valve means on the shaft and basket for rotation in unison therewith, a plate affixed to the deformable rear wall of the basket adjacent the valve means, and a valve actuating member carried by the plate and operated by the deformation of said rear wall for actuating the valve means to feed liquid to said at least one chamber.
  • a device for the automatic balancing of washing and centrifuging machines of the type including a driving shaft, a rotary basket mounted in an overhanging manner on the driving shaft, and means within the basket defining peripheral chambersfor receiving an amount of liquid for balancing the unbalancing stresses due to an irregular distribution of the basket load, the improvement comprising valve means for feeding liquid to at least one of the chambers, means operably mounting the valve means on the shaft and basket for rotation in unison therewith, said basket having a portion thereof which is elastically deformable under the action of an unbalance of the rotary basket, and means directly operated by the deformation of such portion for actuating the valve means to feed liquid to said at least one chamber, in which there is a valve means for each chamber, each valve having a hollowed body integral with the driving shaft, said body having an outlet, a head for closing the outlet, an actuating stem secured to the valve head extending axially of the hollow body, and an operating member affixed to said elastically deformable portion operative upon deformation
  • the device as claimed in claim 2 including a rubber container inserted in said chamber as snugly mating the means defining the chamber.
  • said operating member includes a plate affixed to said elastically deformable portion in front of said actuating'stem secured to the valve head, and a screw carried by said plate for actuating said stem.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)
US00166502A 1970-08-01 1971-07-27 Device for the automatic balancing of washing and drying machines Expired - Lifetime US3799348A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2819670 1970-08-01

Publications (1)

Publication Number Publication Date
US3799348A true US3799348A (en) 1974-03-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00166502A Expired - Lifetime US3799348A (en) 1970-08-01 1971-07-27 Device for the automatic balancing of washing and drying machines

Country Status (5)

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US (1) US3799348A (de)
AT (1) AT304419B (de)
DE (1) DE2048587A1 (de)
GB (1) GB1320605A (de)
SE (1) SE381688B (de)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983035A (en) * 1971-06-24 1976-09-28 U.S. Philips Corporation Balancing device for a rotatable drum which may be eccentrically loaded
US4152128A (en) * 1976-07-12 1979-05-01 Lywood Jeremy H G Rotary separator
US4157781A (en) * 1978-07-19 1979-06-12 Hitoshi Maruyama Self balancing centrifuge
ES2151332A1 (es) * 1997-01-31 2000-12-16 Fagor S Coop Metodo de equilibrado de una lavadora de ropa.
US6507799B2 (en) 2001-02-26 2003-01-14 Honeywell International Inc. Method and apparatus for reducing microprocessor speed requirements in data acquisition applications
US6532422B1 (en) 2001-06-29 2003-03-11 Honeywell International, Inc. Simultaneous injection method and system for a self-balancing rotatable apparatus
US6546354B1 (en) 2001-11-15 2003-04-08 Honeywell International, Inc. Resonance identification extension for a self-balancing rotatable apparatus
US20030101018A1 (en) * 2001-11-15 2003-05-29 Stalsberg Kevin J. Continuous flow method and system for placement of balancing fluid on a rotating device requiring dynamic balancing
US6647790B2 (en) 2001-11-15 2003-11-18 Honeywell International Inc. Fixed-bandwidth correlation window method and system for a self-balancing rotatable apparatus
US6662682B2 (en) 2001-11-15 2003-12-16 Honeywell International Inc. Dynamic balancing application mass placement
US6665625B2 (en) 2001-09-10 2003-12-16 Honeywell International Inc Energy-based thresholds applied dynamic balancing
US6681430B2 (en) 2001-11-15 2004-01-27 Honeywell International Inc. Method and system for mechanizing simultaneous multi-actuator actions applied to dynamic balancing
US6687572B2 (en) 2001-11-15 2004-02-03 Honeywell International Inc. Supervisory method and system for improved control model updates applied to dynamic balancing
US6701561B2 (en) 2001-09-10 2004-03-09 Honeywell International Inc. Method and system for detecting fluid injection from stationary to rotating members
US6775870B2 (en) 2001-11-15 2004-08-17 Honeywell International Inc. Data manipulation method and system for a self-balancing rotatable apparatus
US20050210602A1 (en) * 2004-03-26 2005-09-29 Contini Vincent J Injector and nozzle assembly for washing machine out-of-balance correction system
US20080307833A1 (en) * 2004-07-20 2008-12-18 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US20100089102A1 (en) * 2002-12-27 2010-04-15 Jae-Won Chang Drum type washing machine
US20110041566A1 (en) * 2005-09-30 2011-02-24 Lg Electronics Inc. Drum-type washing machine
US20110162442A1 (en) * 2008-09-10 2011-07-07 Prof. Dr. Lars Bertil Carnehammar Method, system and device for reducing vibration in an article processing machine, such as a washing machine
USRE43625E1 (en) 2006-03-29 2012-09-04 Lg Electronics Inc. Drum type washing machine
US8671719B2 (en) 2002-12-27 2014-03-18 Lg Electronics Inc. Drum type washing machine
EP3401432A1 (de) 2017-05-08 2018-11-14 Vestel Elektronik Sanayi ve Ticaret A.S. Technik zum ausgleichen während der trommelrotation in einer waschmaschine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1139366B (it) * 1980-06-09 1986-09-24 Mitsubishi Heavy Ind Ltd Macchina per lavaggio a secco
EP2147142B1 (de) 2007-04-17 2013-09-11 Arçelik Anonim Sirketi Waschtrockner
WO2020182449A1 (en) 2019-03-11 2020-09-17 Arcelik Anonim Sirketi A washer/dryer wherein unbalanced load is balanced with fluid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224241A (en) * 1938-02-28 1940-12-10 Verdier John Lafayette Rotary extractor
US2463801A (en) * 1944-07-11 1949-03-08 Herbert E Page Clothes-washing machine
US2584942A (en) * 1949-04-18 1952-02-05 Ernest L Thearle Dynamically balanced rotor
US2798610A (en) * 1953-12-28 1957-07-09 Henry C A Meyer Laundry machine
US3117926A (en) * 1958-11-28 1964-01-14 Pellerin Corp Milnor Automatic imbalance control system for a clothes washing machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224241A (en) * 1938-02-28 1940-12-10 Verdier John Lafayette Rotary extractor
US2463801A (en) * 1944-07-11 1949-03-08 Herbert E Page Clothes-washing machine
US2584942A (en) * 1949-04-18 1952-02-05 Ernest L Thearle Dynamically balanced rotor
US2798610A (en) * 1953-12-28 1957-07-09 Henry C A Meyer Laundry machine
US3117926A (en) * 1958-11-28 1964-01-14 Pellerin Corp Milnor Automatic imbalance control system for a clothes washing machine

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983035A (en) * 1971-06-24 1976-09-28 U.S. Philips Corporation Balancing device for a rotatable drum which may be eccentrically loaded
US4152128A (en) * 1976-07-12 1979-05-01 Lywood Jeremy H G Rotary separator
US4157781A (en) * 1978-07-19 1979-06-12 Hitoshi Maruyama Self balancing centrifuge
ES2151332A1 (es) * 1997-01-31 2000-12-16 Fagor S Coop Metodo de equilibrado de una lavadora de ropa.
US6507799B2 (en) 2001-02-26 2003-01-14 Honeywell International Inc. Method and apparatus for reducing microprocessor speed requirements in data acquisition applications
US6532422B1 (en) 2001-06-29 2003-03-11 Honeywell International, Inc. Simultaneous injection method and system for a self-balancing rotatable apparatus
US6701561B2 (en) 2001-09-10 2004-03-09 Honeywell International Inc. Method and system for detecting fluid injection from stationary to rotating members
US6665625B2 (en) 2001-09-10 2003-12-16 Honeywell International Inc Energy-based thresholds applied dynamic balancing
US6647790B2 (en) 2001-11-15 2003-11-18 Honeywell International Inc. Fixed-bandwidth correlation window method and system for a self-balancing rotatable apparatus
US6662682B2 (en) 2001-11-15 2003-12-16 Honeywell International Inc. Dynamic balancing application mass placement
US20030101018A1 (en) * 2001-11-15 2003-05-29 Stalsberg Kevin J. Continuous flow method and system for placement of balancing fluid on a rotating device requiring dynamic balancing
US6681430B2 (en) 2001-11-15 2004-01-27 Honeywell International Inc. Method and system for mechanizing simultaneous multi-actuator actions applied to dynamic balancing
US6687572B2 (en) 2001-11-15 2004-02-03 Honeywell International Inc. Supervisory method and system for improved control model updates applied to dynamic balancing
US6546354B1 (en) 2001-11-15 2003-04-08 Honeywell International, Inc. Resonance identification extension for a self-balancing rotatable apparatus
US6775870B2 (en) 2001-11-15 2004-08-17 Honeywell International Inc. Data manipulation method and system for a self-balancing rotatable apparatus
US6795792B2 (en) 2001-11-15 2004-09-21 Honeywell International Inc. Continuous flow method and system for placement of balancing fluid on a rotating device requiring dynamic balancing
US8302434B2 (en) 2002-12-27 2012-11-06 Lg Electronics Inc. Drum-type washing machine
US8671719B2 (en) 2002-12-27 2014-03-18 Lg Electronics Inc. Drum type washing machine
US20100089102A1 (en) * 2002-12-27 2010-04-15 Jae-Won Chang Drum type washing machine
US20100095714A1 (en) * 2002-12-27 2010-04-22 Jae-Won Chang Drum type washing machine
US8646293B2 (en) 2002-12-27 2014-02-11 Lg Electronics Inc. Drum type washing machine
US8616027B2 (en) 2002-12-27 2013-12-31 Lg Electronics Inc. Drum type washing machine
US20110094272A1 (en) * 2002-12-27 2011-04-28 Lg Electronics Inc. Drum type washing machine
US8336340B2 (en) 2002-12-27 2012-12-25 Lg Electronics Inc. Drum-type washing machine
US8387421B2 (en) 2002-12-27 2013-03-05 Lg Electronics Inc. Drum-type washing machine
US8156770B2 (en) 2002-12-27 2012-04-17 Lg Electronics, Inc. Drum type washing machine
US8322170B2 (en) 2002-12-27 2012-12-04 Lg Electronics Inc. Drum-type washing machine
US8887537B2 (en) 2002-12-27 2014-11-18 Lg Electronics Inc. Drum-type washing machine
US8341983B2 (en) 2002-12-27 2013-01-01 Lg Electronics Inc. Drum-type washing machine
US8336339B2 (en) 2002-12-27 2012-12-25 Lg Electronics Inc. Drum type washing machine
US8646292B2 (en) 2002-12-27 2014-02-11 Lg Electronics Inc. Drum type washing machine
US20050210602A1 (en) * 2004-03-26 2005-09-29 Contini Vincent J Injector and nozzle assembly for washing machine out-of-balance correction system
US8783072B2 (en) 2004-07-20 2014-07-22 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US20080307833A1 (en) * 2004-07-20 2008-12-18 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8800326B2 (en) 2004-07-20 2014-08-12 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8726702B2 (en) 2004-07-20 2014-05-20 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8887538B2 (en) 2004-07-20 2014-11-18 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8429938B2 (en) 2004-07-20 2013-04-30 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8434334B2 (en) 2004-07-20 2013-05-07 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8677787B2 (en) 2004-07-20 2014-03-25 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US20110100069A1 (en) * 2004-07-20 2011-05-05 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8931312B2 (en) 2004-07-20 2015-01-13 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US20100242550A1 (en) * 2004-07-20 2010-09-30 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8220294B2 (en) 2005-09-30 2012-07-17 Lg Electronics Inc. Drum-type washing machine
US8671718B2 (en) 2005-09-30 2014-03-18 Lg Electronics Inc. Drum-type washing machine
US8234890B2 (en) 2005-09-30 2012-08-07 Lg Electronics Inc. Drum-type washing machine
US8225628B2 (en) 2005-09-30 2012-07-24 Lg Electronics Inc. Drum-type washing machine
US20110041566A1 (en) * 2005-09-30 2011-02-24 Lg Electronics Inc. Drum-type washing machine
USRE44795E1 (en) * 2006-03-29 2014-03-11 Lg Electronics Inc. Drum type washing machine
USRE44674E1 (en) * 2006-03-29 2013-12-31 Lg Electronics Inc. Drum type washing machine
USRE44511E1 (en) * 2006-03-29 2013-10-01 Lg Electronics Inc. Drum type washing machine
USRE44028E1 (en) 2006-03-29 2013-02-26 Lg Electronics Inc. Drum type washing machine
USRE43625E1 (en) 2006-03-29 2012-09-04 Lg Electronics Inc. Drum type washing machine
US20110162442A1 (en) * 2008-09-10 2011-07-07 Prof. Dr. Lars Bertil Carnehammar Method, system and device for reducing vibration in an article processing machine, such as a washing machine
EP3401432A1 (de) 2017-05-08 2018-11-14 Vestel Elektronik Sanayi ve Ticaret A.S. Technik zum ausgleichen während der trommelrotation in einer waschmaschine

Also Published As

Publication number Publication date
DE2048587A1 (de) 1972-02-03
AT304419B (de) 1973-01-10
SE381688B (sv) 1975-12-15
GB1320605A (en) 1973-06-20

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