EP1676948A1 - Waschmaschine mit versteckte elektrische Widerstand - Google Patents

Waschmaschine mit versteckte elektrische Widerstand Download PDF

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Publication number
EP1676948A1
EP1676948A1 EP05112979A EP05112979A EP1676948A1 EP 1676948 A1 EP1676948 A1 EP 1676948A1 EP 05112979 A EP05112979 A EP 05112979A EP 05112979 A EP05112979 A EP 05112979A EP 1676948 A1 EP1676948 A1 EP 1676948A1
Authority
EP
European Patent Office
Prior art keywords
tank
electric resistance
support
machine according
washing
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.)
Withdrawn
Application number
EP05112979A
Other languages
English (en)
French (fr)
Inventor
Giuseppe Marchitto
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.)
IAR-SILTAL SpA
Original Assignee
IAR-SILTAL SpA
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 IAR-SILTAL SpA filed Critical IAR-SILTAL SpA
Publication of EP1676948A1 publication Critical patent/EP1676948A1/de
Withdrawn legal-status Critical Current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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements

Definitions

  • the present invention relates to a laundry washing machine with hidden electric resistance.
  • the present invention relates to a laundry washing machine in which the electric resistance for heating the washing water is designed and located such that it is integrated within a customised support that does not protrude in regard to the washing tank.
  • washing water in general between 16 and 18 litres, which also enters these housings.
  • Such quantities of water not strictly indispensable for the purposes of a correct wash, require proportional consumption of electricity to heat the water; in consequence, also the washing detergents must be used at higher doses, so as to maintain an adequate concentration of detergent substances in the water.
  • the aim of the present invention is to remedy the drawbacks mentioned above.
  • the aim of the present invention is to provide a laundry washing machine in which the electric resistance for heating the water is arranged in such a manner that it does not require housings of significant dimensions that cause the need for large quantities of water in the tank.
  • a further aim of the invention is to provide a laundry washing machine in which the electric resistance is arranged such that it does not protrude towards the rotating drum of the washing machine.
  • an aim of this invention is to provide a laundry washing machine in which energy consumption and the quantities of detergents used are in consequence appreciably reduced.
  • a further aim of this invention is to make available to users a laundry washing machine in which the electric resistance for heating the water can provide a high degree of reliability over time and furthermore is such as to be easily and economically produced.
  • the laundry washing machine subject of the present invention which comprises a washing tank that is substantially cylindrical, provided externally with seats to attach ties and shock-absorbers, and a rotating drum arranged inside the tank, fundamentally characterised in that the electric resistance is fixed to a plate-shaped metal support that forms part of the lower lateral surface of said tank.
  • the laundry washing machine of the present invention comprises, within a housing and support casing of known type (not illustrated) a washing tank 10, of substantially cylindrical shape, bearing along its outer lateral surface a number of attach seats 12 for ties and shock-absorbers to be connected to the metal supporting frame.
  • Said tank 10 is of preference made of plastic material and contains a conventional washing drum 14, disposed such that it can rotate inside the tank through known means.
  • the tank 10 is represented in figures 1-3 without the circular front cover facing to the back wall, the latter indicated as 16 in figure 1 and provided with a seat in which the hub of the rotating drum 14 engages and rotates.
  • the electric resistance to heat the washing water is fixed to a plate-shaped metal support 22 that is an integral part of the lateral surface of the tank 10.
  • Said electric resistance, indicated schematically as 20, for example of the armoured type is preferably made integral with the support 22 by brazing and is at least partially housed in a recess of shaped profile 24, of limited depth, practised on the support itself.
  • the rest surface for the electrical resistance 20 defined by the recess 24 is of planar development or possibly slightly arched to follow the profile of the lower lateral surface of the tank 10; in the preferred embodiment illustrated in the figures, the rest surface defined by said recess 24 is completely flat and, in consequence, does not define any concave or convex portions on the opposite face.
  • the face of the support 22 opposite to that along which the electric resistance 20 is fixed is indicated as 26 in figure 1, from which it appears that also a part of the inner lateral surface of the tank 10 advantageously has a planar development. Said part with planar development is located in correspondence with the bottom, or central lower zone, of the tank 10 and is indicated as 28 in figure 1.
  • the face 26 of the support 22 opposed to that to which the electric resistance 20 is fixed is an integral part of the zone 28 with planar development of the inner lateral surface of the tank 10.
  • Said support 22, in the preferred embodiment of the invention is solidly fixed into the zone 28 of the tank 10 during the production process, so that the outer edge indicated as 30 of the support is embedded within the plastic material of which the tank is fabricated during the moulding process.
  • the support is thus incorporated in the tank 10 and the electric resistance 20 faces towards the outside of the tank, without creating any hindrance internally in the tank, whereas the water heating is assured by conduction through the support itself.
  • said support 22 with its electric resistance may be mounted over the tank 10, the latter being provided with an appropriate window, starting from the edge 30, and fixed with screws or equivalent fixing devices.
  • the electric resistance 20 to heat the washing water does not require extensive housings which would make it necessary to use large quantities of water, with consequent increase in energy consumption and detergent requirement.
  • a quantity of water between 10 and 12 litres is held to be appropriate for correct washing on the basis of experimental tests and technical trials carried out by the applicant.
  • the resistance 20 also creates no hindrance inside the tank 12, with the consequent possibility of a minimum difference in volume between the tank itself and the rotating drum 14 located inside it, to the advantage of the capacity of the drum.
  • the laundry washing machine according to the present invention there is a minimum and almost constant space between drum and tank, with consequent optimisation of the washing bath, and contiguity between washing bath and laundry also with different types of loads in terms of kilograms.
  • the support 22 of the electric resistance 20 may at least in part present an arched development, corresponding to the shape of the lateral surface of the tank 10.
  • the thickness of the support 22 is preferably reduced at its outer edge 30 destined to be embedded within the plastic material forming the tank 20.
  • the lower region of the tank 10 of which the support 22 is an integral part is preferably of greater thickness than the remainder of the circumference wall of the tank and is shaped so as to reduce the space between drum and tank.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP05112979A 2004-12-28 2005-12-23 Waschmaschine mit versteckte elektrische Widerstand Withdrawn EP1676948A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT002531A ITMI20042531A1 (it) 2004-12-28 2004-12-28 Macchina lavabiancheria con resistenza elettrica a scomparsa

Publications (1)

Publication Number Publication Date
EP1676948A1 true EP1676948A1 (de) 2006-07-05

Family

ID=35768105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05112979A Withdrawn EP1676948A1 (de) 2004-12-28 2005-12-23 Waschmaschine mit versteckte elektrische Widerstand

Country Status (2)

Country Link
EP (1) EP1676948A1 (de)
IT (1) ITMI20042531A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2775025A1 (de) 2013-03-05 2014-09-10 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Waschvorrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE854786C (de) * 1944-04-13 1952-11-24 Siemens Ag Waschmaschine, insbesondere fuer den Haushalt
DE1898429U (de) * 1964-05-05 1964-08-13 Constructa Werke G M B H Elektrische heizung, insbesondere fuer eine trommelwaschmaschine.
FR2031930A5 (de) * 1969-02-13 1970-11-20 Europ Manufacturing
FR2538821A1 (fr) * 1982-12-30 1984-07-06 Amiens Const Elect Mec Machine a laver a cuve en matiere plastique
DE9100476U1 (de) * 1991-01-16 1991-04-04 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Reinigungsmaschinen-Beheizung
DE4104450A1 (de) * 1991-02-14 1992-08-20 Manfred Stoll Verfahren und einrichtung zum waschen von textilien in einem waschvollautomaten nach dem doppeltrommelprinzip und recyclingbehaelter zum speichern von flotten
US5557704A (en) * 1990-11-09 1996-09-17 Pifco Limited Heating vessel with chromium-enriched stainless steel substrate promoting adherence of thin film heater thereon

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE854786C (de) * 1944-04-13 1952-11-24 Siemens Ag Waschmaschine, insbesondere fuer den Haushalt
DE1898429U (de) * 1964-05-05 1964-08-13 Constructa Werke G M B H Elektrische heizung, insbesondere fuer eine trommelwaschmaschine.
FR2031930A5 (de) * 1969-02-13 1970-11-20 Europ Manufacturing
FR2538821A1 (fr) * 1982-12-30 1984-07-06 Amiens Const Elect Mec Machine a laver a cuve en matiere plastique
US5557704A (en) * 1990-11-09 1996-09-17 Pifco Limited Heating vessel with chromium-enriched stainless steel substrate promoting adherence of thin film heater thereon
DE9100476U1 (de) * 1991-01-16 1991-04-04 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Reinigungsmaschinen-Beheizung
DE4104450A1 (de) * 1991-02-14 1992-08-20 Manfred Stoll Verfahren und einrichtung zum waschen von textilien in einem waschvollautomaten nach dem doppeltrommelprinzip und recyclingbehaelter zum speichern von flotten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2775025A1 (de) 2013-03-05 2014-09-10 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Waschvorrichtung

Also Published As

Publication number Publication date
ITMI20042531A1 (it) 2005-03-28

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