ITCS20120007A1 - THIRD VARIANT TO THE VIBRATION CONTROL SYSTEM DURING CENTRIFUGATION IN A HOME WASHING MACHINE - Google Patents
THIRD VARIANT TO THE VIBRATION CONTROL SYSTEM DURING CENTRIFUGATION IN A HOME WASHING MACHINE Download PDFInfo
- Publication number
- ITCS20120007A1 ITCS20120007A1 IT000007A ITCS20120007A ITCS20120007A1 IT CS20120007 A1 ITCS20120007 A1 IT CS20120007A1 IT 000007 A IT000007 A IT 000007A IT CS20120007 A ITCS20120007 A IT CS20120007A IT CS20120007 A1 ITCS20120007 A1 IT CS20120007A1
- Authority
- IT
- Italy
- Prior art keywords
- washing machine
- intensity
- control system
- water
- clothes
- Prior art date
Links
- 238000005406 washing Methods 0.000 title claims description 7
- 238000005119 centrifugation Methods 0.000 title description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000009987 spinning Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 2
- 230000003042 antagnostic effect Effects 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 230000000750 progressive effect Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- 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
-
- 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
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/16—Imbalance
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Description
DESCRIZIONE DELL'INVENZIONE INDUSTRIALE DAL TITOLO DESCRIPTION OF THE INDUSTRIAL INVENTION BY TITLE
Terza variante al sistema di controllo delle vibrazioni durante la centrifugazione in una lavatrice domestica Third variant to the vibration control system during spinning in a domestic washing machine
Descrizione generale del campo di intervento dell’ invenzione. General description of the field of intervention of the invention.
E’ noto che le lavatrici durante la fase di centrifugazione spesso vibrano anche in maniera pesante, e ciò a causa della non uniforme disposizione della biancheria alTinterno del cestello, il che produce un sistema di forze rotante. Tale sistema rotante di forze però diminuisce di intensità man mano che la biancheria espelle l’acqua a causa della centrifugazione stessa, possibilmente modificandosi a causa delle diverse caratteristiche di assorbimento dei singoli capi. It is known that washing machines during the spinning phase often vibrate even heavily, and this is due to the non-uniform arrangement of the laundry inside the drum, which produces a rotating force system. However, this rotating system of forces decreases in intensity as the laundry expels the water due to the centrifugation itself, possibly changing due to the different absorption characteristics of the individual items.
Ora tali vibrazioni costringono da una parte ad appesantire la lavatrice stessa con masse aggiuntive, dall’altra costringono a ridurre il diametro del cestello in modo che la vasca che lo contiene non urti la struttura esterna, essendo a questa collegata tramite un sistema molla-ammortizzatore. Ma proprio la limitazione del diametro del cestello è considerato un elemento negativo, in quanto riduce la quantità di biancheria lavabile per ciclo. Now these vibrations force on the one hand to weigh down the washing machine itself with additional masses, on the other hand they force to reduce the diameter of the basket so that the tub that contains it does not hit the external structure, being connected to this through a spring-shock absorber system. . But the limitation of the diameter of the drum is considered a negative element, as it reduces the amount of washable laundry per cycle.
A parte ciò, le nuove tariffe agevolate per l’utilizzo notturno degli elettrodomestici forniscono un ulteriore stimolo nella riduzione/annullamento delle vibrazioni stesse. Apart from that, the new discounted rates for the night use of household appliances provide a further stimulus in reducing / canceling the vibrations themselves.
Scopo della presente invenzione è dunque un sistema che consenta di ridurre al minimo se non annullare completamente le vibrazioni stesse. In particolare due precedenti domande di brevetto CS2010A000017 e CS2011A000006 dell’autore erano relativi a un sistema basato sull’utilizzo di masse d’acqua in tasche poste ai bordi del cestello, in modo da bilanciare sia il non equilibrio statico che quello dinamico, causato cioè dalla mancata coincidenza tra asse principale di inerzia del cestello con il suo carico e l’asse di rotazione. Tale sistema però aveva il difetto di richiedere la presenza di valvole di scarico attuate da solenoidi in modo da regolare il flusso uscente dalle tasche. The aim of the present invention is therefore a system which allows to reduce to a minimum if not completely cancel the vibrations themselves. In particular, two previous patent applications CS2010A000017 and CS2011A000006 by the author related to a system based on the use of masses of water in pockets placed at the edges of the basket, in order to balance both the static and dynamic non-equilibrium, that is caused by the lack of coincidence between the main axis of inertia of the basket with its load and the rotation axis. This system, however, had the drawback of requiring the presence of exhaust valves actuated by solenoids in order to regulate the flow out of the pockets.
Descrizione della realizzazione preferita. Description of the preferred embodiment.
L’idea di base è quella di utilizzare le stesse cavità toroidali poste lateralmente all’interno del cestello, suddivise con setti in una serie di tasche che devono essere riempite di acqua in modo differenziato lungo la circonferenza del castello, temporizzando il flusso, in modo da riempire solo le tasche che servono a generare le contro forze rotanti, lasciando dei forellini sempre aperti, in modo che l’acqua esca in continuazione, continuando l’iniezione di acqua in modo da ottenere un equilibrio dinamico tra ciò che entra e ciò che esce in modo da generare forze di inerzia atte a compensare quelle generate dalla maldistribuzione dei panni. Come prima, tali tasche possono essere costruite come elemento integrante del cestello e poste all’ esterno di questo, o anche costituite come elementi plastici aggiuntivi da installare nei cestelli stessi. Tali tasche devono essere aperte in corrispondenza del raggio minimo e verso l’esterno. Naturalmente è chiaro che il riempimento deve essere controllato con attenzione, utilizzando valvole la cui apertura e chiusura possa essere controllata in funzione dell’angolo di rotazione, tramite ad esempio, ma non esclusivamente, l’attivazione di solenoidi. Un encoder angolare potrebbe controllare la posizione del cestello, onde permettere di sapere quando una particolare valvola sarà in posizione giusta per essere attuata. Tuttavia, T encoder potrebbe essere sostituito dall’analisi dell’andamento delle accelerazioni, nota che sia la differenza di fase, con l’eventuale aggiunta di sensori di campo (effetto Hall o altro). The basic idea is to use the same toroidal cavities placed laterally inside the basket, divided with septa in a series of pockets that must be filled with water in different ways along the circumference of the castle, timing the flow, so to fill only the pockets that are used to generate the rotating counter forces, leaving small holes always open, so that the water comes out continuously, continuing the injection of water in order to obtain a dynamic balance between what enters and what it exits in such a way as to generate inertia forces designed to compensate for those generated by the maldistribution of the cloths. As before, these pockets can be built as an integral element of the basket and placed outside it, or even made up as additional plastic elements to be installed in the baskets themselves. These pockets must be open at the minimum radius and outwards. Of course it is clear that the filling must be carefully controlled, using valves whose opening and closing can be controlled according to the angle of rotation, for example, but not exclusively, by activating solenoids. An angle encoder could control the position of the basket, to let you know when a particular valve will be in the right position to be actuated. However, the encoder could be replaced by the analysis of the acceleration trend, note that it is the phase difference, with the possible addition of field sensors (Hall effect or other).
Per riempire le tasche dalTesterno, verrà provvisto un piccolo condotto di adduzione dell’acqua in corrispondenza dell’apertura, che dovrà erogare l’acqua durante tutta la fase di centrifugazione solo nelle tasche giuste, sulla base di quanto rilevato dagli accelerometri. To fill the pockets from the outside, a small water supply duct will be provided at the opening, which will have to deliver water during the entire centrifugation phase only in the right pockets, based on what is detected by the accelerometers.
All’inizio della fase di centrifugazione, questa deve essere inizialmente a bassa velocità, in modo da generare basse sollecitazioni, permettendo di determinare le posizioni angolari in cui si trovano gli sbilanciamenti. Fatto ciò si può calcolare lo sbilanciamento utile e s’inizia ad iniettare l’acqua dalle tasche che servono a bilanciare le masse dei panni maldistribuiti. Tale processo dovrà continuare per tutta la fase di centrifugazione, poiché l’acqua continuerà ad uscire dai forellini di uscita, non essendo previste valvole in uscita. At the beginning of the centrifugation phase, this must initially be at low speed, in order to generate low stresses, allowing to determine the angular positions in which the imbalances are located. Once this is done, the useful imbalance can be calculated and water is injected from the pockets which serve to balance the masses of the mis-distributed cloths. This process must continue throughout the centrifugation phase, since the water will continue to flow out of the outlet holes, as no outlet valves are provided.
Passando a una descrizione più dettagliata, vediamo in Tavola 1 uno schema che rappresenta il cestello in semisezione frontale e laterale, in cui si notano le suddivisioni dei toroidi in tasche (1), le relative aperture al raggio minimo (2), gli accelerometri, due se si vuole bilanciare il carico anche dinamicamente, (3), e, nella semisezione laterale, i forellini di svuotamento (4), i condotti di adduzione dell’acqua (5) che fanno parte della vasca contenente il cestello (6), la valvola temporizzatrice (7), un piccolo serbatoio in pressione (8) e la pompa ausiliaria per l’iniezione dell’acqua di bilanciamento (9) che viene alimentata dalla Linea (10). Moving on to a more detailed description, we see in Table 1 a diagram that represents the basket in front and side half-section, in which we note the subdivisions of the toroids into pockets (1), the relative openings at the minimum radius (2), the accelerometers, two if you want to balance the load also dynamically, (3), and, in the lateral half-section, the emptying holes (4), the water supply ducts (5) which are part of the tank containing the basket (6), the timing valve (7), a small pressure tank (8) and the auxiliary pump for the injection of the balancing water (9) which is fed by the Line (10).
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000007A ITCS20120007A1 (en) | 2012-02-21 | 2012-02-21 | THIRD VARIANT TO THE VIBRATION CONTROL SYSTEM DURING CENTRIFUGATION IN A HOME WASHING MACHINE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000007A ITCS20120007A1 (en) | 2012-02-21 | 2012-02-21 | THIRD VARIANT TO THE VIBRATION CONTROL SYSTEM DURING CENTRIFUGATION IN A HOME WASHING MACHINE |
Publications (1)
Publication Number | Publication Date |
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ITCS20120007A1 true ITCS20120007A1 (en) | 2013-08-22 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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IT000007A ITCS20120007A1 (en) | 2012-02-21 | 2012-02-21 | THIRD VARIANT TO THE VIBRATION CONTROL SYSTEM DURING CENTRIFUGATION IN A HOME WASHING MACHINE |
Country Status (1)
Country | Link |
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IT (1) | ITCS20120007A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002042541A1 (en) * | 2000-11-24 | 2002-05-30 | Primus N.V. | Rotating machines with out-of-balance operation |
US20050210929A1 (en) * | 2004-03-26 | 2005-09-29 | George Paul E Ii | Balancing fluid flow arrangement in an inner tub of a washing machine having an out-of-balance correction system |
DE102009021327A1 (en) * | 2008-05-16 | 2009-11-19 | Lg Electronic Inc. | laundry machine |
EP2385164A1 (en) * | 2009-03-09 | 2011-11-09 | Panasonic Corporation | Washing machine |
WO2011144559A1 (en) * | 2010-05-20 | 2011-11-24 | Arcelik Anonim Sirketi | A washing machine wherein the unbalanced load is balanced |
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2012
- 2012-02-21 IT IT000007A patent/ITCS20120007A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002042541A1 (en) * | 2000-11-24 | 2002-05-30 | Primus N.V. | Rotating machines with out-of-balance operation |
US20050210929A1 (en) * | 2004-03-26 | 2005-09-29 | George Paul E Ii | Balancing fluid flow arrangement in an inner tub of a washing machine having an out-of-balance correction system |
DE102009021327A1 (en) * | 2008-05-16 | 2009-11-19 | Lg Electronic Inc. | laundry machine |
EP2385164A1 (en) * | 2009-03-09 | 2011-11-09 | Panasonic Corporation | Washing machine |
WO2011144559A1 (en) * | 2010-05-20 | 2011-11-24 | Arcelik Anonim Sirketi | A washing machine wherein the unbalanced load is balanced |
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