EP0033684B1 - Abgabevorrichtung für flüssige Produkte und Waschmaschine mit einer solchen Abgabevorrichtung - Google Patents

Abgabevorrichtung für flüssige Produkte und Waschmaschine mit einer solchen Abgabevorrichtung Download PDF

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Publication number
EP0033684B1
EP0033684B1 EP81400107A EP81400107A EP0033684B1 EP 0033684 B1 EP0033684 B1 EP 0033684B1 EP 81400107 A EP81400107 A EP 81400107A EP 81400107 A EP81400107 A EP 81400107A EP 0033684 B1 EP0033684 B1 EP 0033684B1
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EP
European Patent Office
Prior art keywords
container
dispenser
product
tube
dosing receptacle
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.)
Expired
Application number
EP81400107A
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English (en)
French (fr)
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EP0033684A1 (de
Inventor
Christian Burgel
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.)
Thomson-Brandt SA
Original Assignee
Thomson-Brandt SA
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Publication date
Application filed by Thomson-Brandt SA filed Critical Thomson-Brandt SA
Publication of EP0033684A1 publication Critical patent/EP0033684A1/de
Application granted granted Critical
Publication of EP0033684B1 publication Critical patent/EP0033684B1/de
Expired legal-status Critical Current

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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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state

Definitions

  • the invention relates to the technique of dispensing liquid products; more precisely, it relates to a liquid product dispenser making it possible to dilute, in the filling water of a tank, a predetermined dose of a liquid additive; it also relates to a washing machine comprising such a dispenser.
  • a washing machine for example a washing machine
  • different liquid additives such as products: detergents, fabric softeners, sanitizers, scented fabric softeners, etc.
  • washing machines in service include at least one product container in which there is manually, before the start-up operation, a predetermined dose of an additive which must be diluted in the filling water of the tank.
  • dish washing machines which comprise a dispenser comprising a reservoir for storing a reserve of a liquid additive, a metering container, and generally electromagnetic means, allowing to take a dose of product, to withdraw this dose, then to deposit it in the tank of the machine.
  • the liquid product dispenser comprises: a reservoir for storing a reserve of a liquid additive placed in the lower part of the machine and a metering electric pump (peristaltic pump) controlled by the programmer of the machine, the size the dose of liquid additive released into the tank is determined by the duration of excitation of the electro-pump.
  • a metering electric pump peristaltic pump
  • liquid product dispensers have various drawbacks, in particular: the reserve of liquid product is in contact with the atmosphere from which this results in partial oxidation of the product thus stored; these dispensers do not include means ensuring the automatic and periodic rinsing of the constituent elements, and the means making it possible to withdraw a predetermined dose of the product, then to inject this dose into the water of the tank are relatively complex, with the consequence increased cost and reduced machine reliability.
  • the dispenser described comprises a product reservoir, a product supply chamber coming from this reservoir through a valve controlled by float and membrane sensitive to liquid pressure, and a chamber intermediate connected on one side to this chamber through metering valves and on the other side to a pipe for circulation of liquid.
  • a vacuum is created in this intermediate chamber, and the product located above the level of the opening of the metering valves and the intermediate chamber is entrained by this current of liquid.
  • the liquid pressure reestablishes in the intermediate chamber, closes the metering valves and opens the valve of the product reservoir to fill the supply chamber.
  • This distributor has a more or less complicated and expensive structure and the drawback of having a reservoir and a supply chamber which can only function properly if they are vented. In addition, no rinsing of the metering valves and of these supply and intermediate chambers is carried out automatically.
  • the product dispenser comprises a water pump to which are connected in parallel, the machine tank and the container or containers containing different products.
  • This dispenser has the disadvantage of having containers for products which bring these products into contact with air and does not rinse the pipes bringing the products.
  • the object of the present invention is to avoid these drawbacks.
  • a liquid product dispenser having an airtight storage tank placing a reserve of liquid product or additive away from the atmosphere, a metering container disposed below the lower level of this tank, is characterized in that 'it comprises on the one hand in the hermetic tank, an internal pressure balancing means constituted by a tube having an upper end open in the space above the maximum level of this reserve of product and a lower part in communication with a pipe connecting a vacuum outlet of an injection means and the metering container through a withdrawal means provided with a hydrostatic valve, and on the other hand through a hydrostatic valve a communication between the lower part of the tank airtight and an inlet, at the bottom of the dosing container.
  • a cavity for retaining a small quantity of running water is arranged at the outlet of a venturi of the injection means with vacuum connection.
  • the means for balancing the internal pressure of the storage tank is provided with a hydrostatic valve located near the lower level of this tank.
  • the means for withdrawing the dose of liquid product comprises means making it possible to vary the position of the withdrawal orifice, in order to modify the magnitude of the dose of product injected into the tank filling water.
  • the liquid product dispenser has elements static elements such as hydrostatic valves which can be flushed periodically by retaining water stored in the cavity located downstream of the venturi.
  • a hydrostatic valve can be constituted, for example, by a spherical ball resting on a conical seat, this ball possibly being held captive by an openwork wall.
  • the hydrostatic valve 7, located at the lower part of the storage tank 1 comprises a ball whose apparent density is notably lower than the density of the liquid product stored in the tank; the function of this valve is to isolate the tube 4 from the reservoir when the level of the liquid product reserve is above the level of the ball.
  • the hydrostatic valve 11, located at the filling orifice 9 of the metering container 8 comprises a ball whose apparent density is substantially greater than the density of the liquid product, this ball has a weight of value M 1; it rests on its conical seat whose cross section of contact has a value S 1; the function of this valve is to isolate the storage tank 1 from the metering container 8 when the venturi creates a depression in the tube 19; conversely, when the solenoid valve 22 is cut, this valve 11 must allow the transfer of a dose of product from the storage tank to the metering container. To do this, the following condition must be satisfied: the weight M1 of the ball must be less than the thrust S1 P1 created by the liquid reserve contained in the storage tank where P1 is the pressure resulting from the difference in product levels in the tank and in the dosing container.
  • the hydrostatic valve 20 located in the tube 15 includes a ball whose apparent density is significantly greater than the density of the liquid product; this ball has a weight of value M2 and it rests on its conical seat whose cross section of contact has a value S2; the function of this valve is to isolate the metering container 8 from the tube 17 when the vacuum in this tube is zero; to do this, the following condition must be satisfied: the weight M2 of the ball must be greater than the thrust S2P2 exerted by the liquid product, where P2 is the pressure resulting from the difference in the levels of the liquid reserve and the valve .
  • the solenoid valve 22 When the solenoid valve 22 is energized, the water passing through the venturi creates a strong vacuum in the tube 19 and, correspondingly, above the liquid product in the storage tank, the ball of the valve 11 is, consequently , strongly applied to its seat and isolates the storage tank; conversely, the ball of the valve 20 is lifted from its seat, and the dose of product is sucked in by the venturi then transferred into the line 24 for filling the tank of the machine.
  • FIG. 2 represents, in schematic form, a variant of the structure of the liquid product dispenser described in FIG. 1.
  • the metering container 8 is integrated inside the reservoir 1 for storing the reserve of the liquid product.
  • FIG. 3 represents, in diagrammatic form, the liquid product dispenser of FIG. 2 in which the level of the withdrawal orifice 16, relative to the bottom of the dosing container 8, can be adjusted in order to vary the size of the dose of product aspirated by the venturi.
  • the means for withdrawing from the metering container comprises a tube 32 fixed to the upper wall of the metering container, this tube passing through the hermetic closure 31 and comprising a first orifice for communication with the conduit 18 and a second orifice for communication with the pipe 19.
  • a the lower end of this tube 32 is arranged a hollow sliding piston provided with the withdrawal tube 15 and the hydrostatic valve 20.
  • a rigid rod 34 can slide in a hermetic closure 35 and is fixed to the piston 20 by an openwork mechanical connection; this rod possibly carries graduations 36 in order to visually indicate the magnitude of the dose of product which will be sucked in by the venturi at each operating cycle.
  • FIG 4 shows, in a sectional view, the details of embodiment of the liquid product dispenser described in Figure 3.
  • the storage tank 1 can be made of a plastic material according to an extrusion process, for example: its shapes exterior are mainly dictated by its location in the washing machine considered.
  • the metering container can be manufactured in two elements: a first element which constitutes the container itself and a second element, or cover, which comprises: the tube 32, the ventilation opening 12 and, optionally, the seat and the ball hydrostatic valve 7.
  • the hollow piston 33 is provided with a seal 33a, and with a pin 33b which passes through the adjustment rod 34.
  • the adjustment rod 34 is folded towards an external wall of the storage tank and it carries an index 34a which can be read opposite the marks inscribed on this external wall.
  • the internal volume of the dosing container is, for example, of the order of a tenth of a liter, and that of a dose which is sometimes lower, which, for a capacity of the storage tank of a liter or more, ensures washing autonomy. important between each product supply.
  • the ball of the hydrostatic valves can be made of a material such as a plastic material, a resin or a metal, according to the apparent density required.
  • a liquid product dispenser can equip an automatic washing machine.
  • the storage tank, the metering container and its pipes can be arranged in the lower part of the machine, advantageously, in the vicinity of the front of this machine; this facade is then equipped with an access door to the filling orifice of the storage tank and to the rod for adjusting the dose of product to be diluted in the filling water of the tank.
  • the other accessories such as the solenoid valve and the venturi can be arranged in various locations of the machine.
  • Such a liquid product distributor finds its application in domestic washing machines or not.

Claims (8)

1. Verteiler für Flüssigprodukte mit einem hermetischen Vorratsbehälter (1), in dem ein Vorrat des flüssigen Produkts oder Zusatzes gegen die Atmosphäre geschützt aufbewahrt wird, und mit einem Dosierbehälter (8) unterhalb des Vorratsbehälters, dadurch gekennzeichnet, dass er einerseits im hermetischen Vorratsbehälter (1) ein Mittel zum inneren Druckausgleich aufweist, das aus einem Rohr (4) besteht, welches ein oberes offenes Ende im Raum oberhalb des Höchstpegels im Vorratsbehälter und ein unteres, mit einer Leitung (19) in Verbindung stehendes Ende besitzt, wobei diese Leitung einen Unterdruckabgriff (21 b) eines Einspritzmittels (21-21 a) mit dem Dosierbehälter (8) über ein Saugmittel (15), das ein hydrostatisches Ventil (20) enthält, verbindet, und dass der Verteiler andererseits eine Verbindung zwischen dem unteren Teil des hermetischen Vorratsbehälters (1) und einer Zufuhröffnung (9) am unteren Teil des Vorratsbehälters über ein hydrostatisches Ventil (11) besitzt.
2. Verteiler nach Anspruch 1, dadurch gekennzeichnet, dass er in der Nähe der Basis des Vorratsbehälters (1) ein hydrostatisches Ventil (7) aufweist, das am unteren Ende des Rohres (4) des Mittels zum inneren Druckausgleich dieses Behälters montiert ist.
3. Verteiler nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass er im unteren Teil des Vorratsbehälters für das flüssige Produkt eine nach innen offene, hohle Ausbuchtung (1a) aufweist, in der ein Dosierbehälter (8) angeordnet ist.
4. Verteiler nach Anspruch 1, der einstellbare Dosiermengen des Produkts abgibt, dadurch gekennzeichnet, dass er im Saugmittel (15) für das Produkt, das sich im Dosierbehälter (8) befindet, ein Mittel aufweist, das eine Veränderung des Niveaus der Öffnung dieses Saugmittels (15) bezüglich des Bodens dieses Dosierbehälters (8) ermöglicht.
5. Verteiler nach Anspruch 4, dadurch gekennzeichnet, dass das Mittel, mit dem das Niveau der Öffnung dieses Saugmittels (15) bezüglich des Bodens des Dosierbehälters (8) verändert werden kann, ein hermetisch geschlossenes Rohr (32) aufweist, das an der oberen Wand des Dosierbehälters (8) befestigt ist und einen Gleitkolben mit einer Teilstriche zur Angabe der Dosiermenge des Produkts tragenden Gleitstange (34) zur Regelung der Höhe des Kolbens aufweist, wobei dieses Rohr (32) einerseits an einen Unterdruckabgriff (21 b) des Venturirohrs (21 ) im Einspritzmittel und andererseits an das Druckausgleichmittel (4) des Vorratsbehälters angeschlossen ist.
6. Waschmachine, die insbesondere mit einer Programmsteuerung für den Waschzyklus ausgerüstet ist, wobei die Programmsteuerung mit einem Elektroventil zur Wasserzufuhr verbunden ist, dadurch gekennzeichnet, dass die Maschine einen Verteiler für Flüssigprodukte nach einem der Ansprüche 1 bis 5 enthält.
7. Waschmaschine nach Anspruch 6, dadurch gekennzeichnet, dass der Vorratsbehälter und der Dosierbehälter im unteren Teil dieser Maschine angeordnet sind.
8. Waschmaschine nach Anspruch 7, dadurch gekennzeichnet, dass sie eine Zugangstür vor dem Vorratsbehälter und vor der Regelstange des dichten Gleitkolbens aufweist.
EP81400107A 1980-02-01 1981-01-27 Abgabevorrichtung für flüssige Produkte und Waschmaschine mit einer solchen Abgabevorrichtung Expired EP0033684B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8002252A FR2475079A1 (fr) 1980-02-01 1980-02-01 Distributeur de produit liquide, et machine a laver comportant un tel distributeur.
FR8002252 1980-02-01

Publications (2)

Publication Number Publication Date
EP0033684A1 EP0033684A1 (de) 1981-08-12
EP0033684B1 true EP0033684B1 (de) 1984-04-18

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EP81400107A Expired EP0033684B1 (de) 1980-02-01 1981-01-27 Abgabevorrichtung für flüssige Produkte und Waschmaschine mit einer solchen Abgabevorrichtung

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Country Link
EP (1) EP0033684B1 (de)
DE (1) DE3163134D1 (de)
ES (1) ES8204780A1 (de)
FR (1) FR2475079A1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8234023V0 (it) * 1982-06-09 1982-06-09 Zanussi A Spa Industrie Dispositivo dosatore distributore per macchina lavatrice.
DE3642744A1 (de) * 1986-12-13 1988-06-23 Henkel Kgaa Leerstandsmessvorrichtung
US20060272360A1 (en) * 2005-06-02 2006-12-07 Unilever Home & Personal Care Usa, Division Of Conopco, Inc. Automatic dispensing device for laundry detergent composition with intermediate chamber
ES2351128B1 (es) * 2008-11-26 2011-11-28 Bsh Electrodomesticos España, S.A. Tambor y máquina para el cuidado de la ropa.
CN102108618B (zh) * 2009-12-29 2015-06-03 海尔集团公司 一种能够自动投放洗涤剂的洗衣机及控制方法
ES2639580T3 (es) 2009-12-03 2017-10-27 Haier Group Corporation Lavadora para agente de lavado autoañadido por presión negativa y método de control de la misma
CN111455619B (zh) * 2019-01-18 2022-05-13 青岛海尔洗涤电器有限公司 一种添加剂自动投放装置及洗衣机
CN112376224A (zh) * 2020-04-02 2021-02-19 无锡小天鹅电器有限公司 投放组件、投放装置、洗衣机及洗剂投放方法
CN112376222A (zh) * 2020-04-02 2021-02-19 无锡小天鹅电器有限公司 用于投放洗剂的投放组件、投放装置及洗衣机
CN112376220A (zh) * 2020-04-02 2021-02-19 无锡小天鹅电器有限公司 投放组件、投放装置、洗衣机及洗剂投放方法
CN112376225A (zh) * 2020-06-29 2021-02-19 无锡小天鹅电器有限公司 投放组件、投放装置及洗衣机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2239484C3 (de) * 1972-08-11 1979-01-04 Helmut Bohlaender Kg, 7800 Freiburg Druckgesteuerte Dosiervorrichtung für Flüssigkeiten
DE2750710A1 (de) * 1977-11-12 1979-05-17 Licentia Gmbh Einspuelvorrichtung fuer fluessiges zusatzmittel bei waschmaschinen
DE2750709A1 (de) * 1977-11-12 1979-05-17 Licentia Gmbh Dosiereinrichtung fuer fluessige behandlungsmittel in waschmaschinen
FR2410697A1 (fr) * 1977-12-02 1979-06-29 Thomson Brandt Dispositif d'injection de produits dans un recipient, notamment une cuve d'appareil menager
FR2457923A1 (fr) * 1979-05-29 1980-12-26 Thomson Brandt Ensemble distribuant des doses de produit liquide, et appareil, tel qu'une machine a laver, muni d'un tel ensemble

Also Published As

Publication number Publication date
ES498970A0 (es) 1982-05-01
DE3163134D1 (en) 1984-05-24
FR2475079B1 (de) 1983-08-19
ES8204780A1 (es) 1982-05-01
EP0033684A1 (de) 1981-08-12
FR2475079A1 (fr) 1981-08-07

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