EP0335452A1 - Waschmaschine mit Überfluss - Google Patents

Waschmaschine mit Überfluss Download PDF

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Publication number
EP0335452A1
EP0335452A1 EP89200742A EP89200742A EP0335452A1 EP 0335452 A1 EP0335452 A1 EP 0335452A1 EP 89200742 A EP89200742 A EP 89200742A EP 89200742 A EP89200742 A EP 89200742A EP 0335452 A1 EP0335452 A1 EP 0335452A1
Authority
EP
European Patent Office
Prior art keywords
tank
washing machine
overflow
axis
rotation
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
EP89200742A
Other languages
English (en)
French (fr)
Other versions
EP0335452B1 (de
Inventor
Jean-Paul Société Civile S.P.I.D. Merlin
Didier Société Civile S.P.I.D. Lenoire
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.)
Whirlpool France SAS
Whirlpool Europe BV
Original Assignee
IRE INDUSTRIES REUNIES D' ELECTROMENAGER SA
IRE IND REUNIES D ELECTROMENAG
Whirlpool France SAS
Whirlpool Europe BV
Whirlpool International BV
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 IRE INDUSTRIES REUNIES D' ELECTROMENAGER SA, IRE IND REUNIES D ELECTROMENAG, Whirlpool France SAS, Whirlpool Europe BV, Whirlpool International BV filed Critical IRE INDUSTRIES REUNIES D' ELECTROMENAGER SA
Publication of EP0335452A1 publication Critical patent/EP0335452A1/de
Application granted granted Critical
Publication of EP0335452B1 publication Critical patent/EP0335452B1/de
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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/087—Water level measuring or regulating devices

Definitions

  • the invention relates to a washing machine comprising a tank, a cylindrical drum whose axis of rotation is horizontal, a water supply device at a controlled level, a draining means and an overflow limiting the amount of tank filling water.
  • Patent No. 2,533,026 describes a washing machine comprising a device for supplying liquid at a controlled level, formed by a solenoid valve ensuring a supply of water to the tank, a compression chamber converting a variation of a tank water level at a variation in air pressure, the lower end of which can be immersed in the tank water, by a pressure switch sensitive to the pressure of the air contained in the chamber and controlling opening or closing the solenoid valve in cooperation with a programmer.
  • the overflow is generally composed of a vertical pipe, mounted as a bypass on draining means located at the bottom of the tank, overflow placed upstream of a drain pump, and operating under the principle of communicating vessels.
  • the maximum water height that the tank can contain then corresponds to the height of the vertical pipe opening into the external space of the tank.
  • washing machine drum When the washing machine drum does not rotate, or rotates slowly; state considered to be a static state; displacement of the body of water during movements of the drum generates a level of water in the tank corresponding to the level of water contained in the pipeline.
  • the subject of the invention is an overflow of a washing machine which is not influenced by the movements of the mass of water contained in the tank of the washing machine during its operation in dynamic state.
  • the overflow arranged on a wall of the tank has a drain hole placed in a substantially horizontal plane passing through the axis of rotation of the drum, opposite to said axis, of the wave generated in the tank by the rotation of the drum.
  • the overflow is no longer subjected to the effect of vessels communicating with the water contained in the tank, a drawback of the overflow of the prior technical field.
  • juxtaposed with the tank it is of reduced size.
  • the overflow is arranged on a substantially flat and vertical side wall of the tank.
  • the drain hole is oriented perpendicular to the dynamic movement of the water wave generated by the rotating drum.
  • the overflow is composed of a foam trap and a siphon forming a conduit composed of three tubular parts in an arc of a circle, placed side by side, concentric with the axis of rotation of the drum, the three tubular parts being connected by elbows.
  • the drain hole is placed so that a line joining the axis of the drain hole and the axis of rotation of the tank forms an angle of about 10 ° relative to the horizontal plane.
  • the drain hole in communication with the internal space of the tank is placed in a zone of non-turbulence directly linked to the direction of movement of the wave generated by the rotation of the drum.
  • the tubular parts of the foam trap form an open arc of an angle of about 100 ° and the tubular parts of the siphon form an open arc of an angle of about 140 °.
  • the general shape of the overflow was obtained following comparative tests which made it possible to optimize shapes and dimensions for the proper functioning of the foam trap as well as the siphon both facilitating the evacuation of a quantity of water determined when the washing machine does not work, for example when the pressure switch does not work.
  • the foam trap is provided with a foam trap hole communicating with the internal space of the tank and the siphon is provided with a siphon hole in its upper part communicating with the internal space of the tank.
  • the small diameter foam trap hole allows, without reducing the effectiveness of the foam trap, to eliminate the quantity of water contained in the foam trap, after a spill, and thus avoid this water stagnates and emits some unpleasant odors over time.
  • the siphon hole of small diameter allows, without reducing the efficiency of the siphon, to stop the syphonic effect for a low water flow.
  • FIG. 1 shows a washing machine 1 comprising a tank 2 in which is arranged a cylindrical drum 3 whose axis of rotation is horizontal, the drum being driven by a motor.
  • a water supply device at a controlled level comprising a solenoid valve 4 ensuring a supply of water to the tank 2, a compression chamber 5, one end of which can be immersed in the water of the tank to convert the variation in the level of supply water from the tank into a pressure variation of an air column, a pressure switch 6 and a programmer 7 controlling the solenoid valve.
  • a draining means 9 and an overflow 8 ensure a discharge of the washing water outside the tank 2, either when the tank is emptied, or when the water level reaches a maximum admissible height, when by example the pressure switch 6 or the programmer 7 no longer work.
  • the overflow 8 is composed, in a known manner, of a vertical pipe 10 placed in bypass on a pipe 11 of the draining means 9, between a bottom part 12 of the tank and a drain pump 13.
  • the vertical pipe 10 opening into the external space 14 of the tank determines, by the principle of communicating vessels, maximum water height in the tank, in a static operating state of the washing machine.
  • FIG. 2 is a perspective view of the tank 2 of a washing machine 1, molded tank of a synthetic material. There is shown a hopper 15, a bearing carrying an axis of rotation 16 of the drum 3, as well as an overflow 17 according to the invention partially molded with the tank, on a substantially flat and vertical side wall 33 of said tank 2.
  • Figure 3 shows the overflow 17 of Figure 2 positioned relative to a horizontal line 18 passing through the axis of rotation 16 of the drum 3.
  • the overflow is composed of a foam trap 19 and a siphon 20 forming a conduit composed of three tubular parts 21, 22, 23, in an arc of a rectangular section, placed side by side and concentric with the axis of rotation 16 of the drum.
  • the tubular part 22 placed between the tubular parts 21 and 23 is connected on the one hand to the tubular part 21 by a lower bend 24 and on the other hand to the tubular part 23 by an upper bend 25.
  • a drain hole 26 allows direct communication between the overflow 17 and the internal space of the tank 2.
  • the drain hole 26 is positioned at a distance of approximately 150 mm from the axis of rotation of the drum, the line passing through the axis of the drain hole 26 and by the axis of rotation 16 of the drum of the tank, forms with the horizontal line 18, an angle of about 10 °.
  • the tubular parts 21, 22 with the lower elbow 24 form a foam trap and the tubular parts 22 and 23 with the upper elbow 25 form a siphon which facilitates the flow of water when the quantity of water in the tank is greater than the maximum admissible quantity of water.
  • the particular position according to the invention of the overflow is linked to the fact that the water is displaced, when the drum drives it by its rotation, by forming a wave which rises in the direction of rotation of the drum at the opposite relative to the axis of rotation of the zone in which the hole 26 is arranged.
  • the overflow is therefore no longer influenced by the dynamic movements, by waves, of the water in the tank.
  • a drain hole 27 is placed in the lower part of the overflow siphon 20, on the pipe 23, drain hole 27 communicating with the external space of the tank 2.
  • the siphon 20 is provided with a small siphon hole 28 arranged in the upper elbow 25, siphon hole 28 which communicates with the internal space of the tank 2, and allowing defusing of the siphon 20.
  • the foam trap 19 is provided with a small diameter foam trap hole 29 arranged in the inner elbow 24, a foam trap hole 29 which communicates with the internal space of the tank 2 to avoid water retention in the tubular parts 21 and 22.
  • Figures 4a and 4b are two explanatory diagrams of the movement of water in dynamic operation of a washing machine.
  • FIG. 4a represents the overflow known from the prior technical field, consisting of a vertical pipe 10 in bypass with the draining means 9.
  • a wave 30 occurs.
  • the principle of communicating vessels the movement of water creates a pseudo level of water, represented by a line 31 in dashed lines, which tends to balance with the level of water contained in the vertical pipe 10, which causes, while the amount of water contained in the machine is normal, an overflow of the water contained in the pipe 10, when the pseudo level is above the edge 32 of the pipe 10.
  • FIG. 4b represents the overflow 17 according to the invention, the location of the drain hole 26 of the overflow 17 communicating with the internal space of the tank is placed then in a zone of weak turbulence, where the water level remains below the water level of the state known as static at the time of the formation of the wave 30.
  • the overflow 17 has in addition to the advantage described, that of being integrated into the tank, reducing the size of the elements contained in the washing machine, and reducing the labor costs during the construction of said washing machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP89200742A 1988-03-29 1989-03-23 Waschmaschine mit Überfluss Expired - Lifetime EP0335452B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8804078A FR2629487B1 (fr) 1988-03-29 1988-03-29 Machine a laver le linge possedant un trop-plein
FR8804078 1988-03-29

Publications (2)

Publication Number Publication Date
EP0335452A1 true EP0335452A1 (de) 1989-10-04
EP0335452B1 EP0335452B1 (de) 1993-05-19

Family

ID=9364726

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89200742A Expired - Lifetime EP0335452B1 (de) 1988-03-29 1989-03-23 Waschmaschine mit Überfluss

Country Status (4)

Country Link
EP (1) EP0335452B1 (de)
DE (1) DE68906583T2 (de)
ES (1) ES2040448T3 (de)
FR (1) FR2629487B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812363C1 (de) * 1998-03-20 1999-07-15 Whirlpool Co Waschmaschine mit Laugenbehälter, Wäschetrommel, Elektromotor und Unwuchtausgleichskörpern
DE19821144A1 (de) * 1998-05-12 1999-11-18 Degussa Verfahren zur Herstellung von pulverförmigen heterogenen Stoffen
EP1849906A1 (de) 2006-04-27 2007-10-31 Electrolux Home Products Corporation N.V. Integrierte Laugenbehälter-Überlauf-Vorrichtung für eine obenbeschickbare Waschmaschine
US10196768B2 (en) 2014-07-31 2019-02-05 Lg Electronics Inc. Washing machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1119085A (fr) * 1954-04-20 1956-06-14 Dispositif de connexion, en particulier pour machines à laver automatiques
FR1455686A (fr) * 1964-12-01 1966-10-14 Flii Donini S A S Officine Ele Dispositif de commande de déversoir pour le réglage du niveau du liquide contenu dans un bac
EP0103516A1 (de) * 1982-09-14 1984-03-21 Esswein S.A. Flüssigkeitsförderungseinrichtung mit Niveaukontrolle und Anwendung für eine Waschmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1119085A (fr) * 1954-04-20 1956-06-14 Dispositif de connexion, en particulier pour machines à laver automatiques
FR1455686A (fr) * 1964-12-01 1966-10-14 Flii Donini S A S Officine Ele Dispositif de commande de déversoir pour le réglage du niveau du liquide contenu dans un bac
EP0103516A1 (de) * 1982-09-14 1984-03-21 Esswein S.A. Flüssigkeitsförderungseinrichtung mit Niveaukontrolle und Anwendung für eine Waschmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812363C1 (de) * 1998-03-20 1999-07-15 Whirlpool Co Waschmaschine mit Laugenbehälter, Wäschetrommel, Elektromotor und Unwuchtausgleichskörpern
DE19821144A1 (de) * 1998-05-12 1999-11-18 Degussa Verfahren zur Herstellung von pulverförmigen heterogenen Stoffen
EP1849906A1 (de) 2006-04-27 2007-10-31 Electrolux Home Products Corporation N.V. Integrierte Laugenbehälter-Überlauf-Vorrichtung für eine obenbeschickbare Waschmaschine
WO2007124806A1 (en) * 2006-04-27 2007-11-08 Electrolux Home Products Corporation N.V. Integrated tub overflow system for top-loading washing machine
US10196768B2 (en) 2014-07-31 2019-02-05 Lg Electronics Inc. Washing machine
US10214842B2 (en) * 2014-07-31 2019-02-26 Lg Electronics Inc. Washing machine

Also Published As

Publication number Publication date
ES2040448T3 (es) 1993-10-16
FR2629487B1 (fr) 1991-12-20
FR2629487A1 (fr) 1989-10-06
EP0335452B1 (de) 1993-05-19
DE68906583T2 (de) 1994-05-19
DE68906583D1 (de) 1993-06-24

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