EP0586633B1 - Dispositif de distribution automatique repetitive de doses d'un produit de lavage en poudre dans des machines a laver travaillant avec de l'eau, notamment des lave-vaisselle et des lave-linge a usage menager - Google Patents

Dispositif de distribution automatique repetitive de doses d'un produit de lavage en poudre dans des machines a laver travaillant avec de l'eau, notamment des lave-vaisselle et des lave-linge a usage menager Download PDF

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Publication number
EP0586633B1
EP0586633B1 EP93904024A EP93904024A EP0586633B1 EP 0586633 B1 EP0586633 B1 EP 0586633B1 EP 93904024 A EP93904024 A EP 93904024A EP 93904024 A EP93904024 A EP 93904024A EP 0586633 B1 EP0586633 B1 EP 0586633B1
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EP
European Patent Office
Prior art keywords
compressed air
metering
cleaning agent
cleaning
duct system
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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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EP93904024A
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German (de)
English (en)
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EP0586633A1 (fr
Inventor
Daniele Cerruti
Egon Galler-Benker
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Individual
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Individual
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4463—Multi-dose dispensing arrangements

Definitions

  • the invention relates to a device for repeated, independent dosing of cans of a powdery detergent in water-carrying cleaning machines, in particular household dishwashers and household washing machines, consisting of a detergent container with an outlet opening above a dosing and addition device, which has at least one recess for receiving individual cans of a powdery cleaning agent, which is dispensed into a treatment container of the water-carrying cleaning machine.
  • Such a device is known from DE-A-41 34 786 and consists of a detergent container with an outlet opening above a metering and adding device, the metering and adding device being designed as a rotatably mounted drum with a number of niches into which when a position is reached directly under the outlet opening of the detergent container, the stored detergent seeps in due to its own weight and from which in the addition position, ie when a dispensing bore provided in a housing is reached, the metered cleaning agent is expelled into a treatment container of the water-carrying cleaning machine by means of a piston moved by a prestressed spring.
  • the detergent container which is arranged inside the cleaning machine, is exposed to the moisture which penetrates through the inevitably present ejection opening during the cleaning process, so that the powdered detergent contained in the detergent container often clumps. This has the consequence that the function is disturbed and also that the clumps from the detergent container of the metering device are difficult to remove.
  • the clumping of the powdered cleaning agent represents a serious problem Disadvantage, which in the worst case can lead to a change in the volume of a metering chamber or even to complete blocking of the metering device.
  • powdered cleaning agents have a strong abrasive effect and the escape of cleaning agents in guides, bearings, etc. of the metering device can only be effectively prevented by using complex and expensive seals.
  • the object of the invention is therefore to create a device of the type mentioned in which the aforementioned disadvantages are avoided in a simple manner.
  • This object is achieved in that the interior of the detergent container and the metering and addition device are acted upon by a compressed air flow generated in a compressed air generator, which is guided by means of a compressed air line system connected to the compressed air generator and connecting parts of the compressed air line system, that the compressed air flow is constantly running Cleaning machine acts on the interior of the detergent container and a guide of the metering and addition device that the compressed air flow in the addition position also acts on the interior of the recess that an arm branches off from a channel of the compressed air guide system for supplying the compressed air flow into the interior of the detergent container, and that in the addition position is opposite the recess of a mouth of the channel of the compressed air control system.
  • the constant loading of the interior of the detergent container and the guidance of the metering and addition device ensures that the internal pressure of the device is always higher than the external pressure, i.e. also the pressure in the treatment tank of the cleaning machine.
  • the penetration of moisture into the interior of the metering and addition device and of the detergent container is thus effectively avoided.
  • the powder dose is ejected and it is ensured that moisture penetration into the dosing and addition device which is inevitably and temporarily open at the time the ejection of the detergent dose is effectively avoided.
  • a dehumidifying device is connected upstream of the compressed air generator. This measure ensures that no moisture can get into the device according to the invention through the compressed air flow acting on the interior of the detergent container and the metering and addition device.
  • the device consists of the funnel-shaped detergent container with a removable cover that is watertight against the detergent container, a metering and addition device with at least one recess, connecting parts of the cleaning container and / or the metering and addition device, one connected to the compressed air generator Compressed air line system and connecting parts of the compressed air line system, the connecting parts of the detergent container and / or the metering and addition device interacting with the connecting parts of the compressed air line system for guiding the compressed air flow.
  • a reliable, effective pneumatic sealing system is thus realized and a device is created which, in addition to its functional reliability, is also distinguished by a simple construction and a small number of parts and is easy to assemble due to its two-part design.
  • the fact that part of the device according to the invention can be removed makes the filling and cleaning considerably easier for the user.
  • a metering and adding device in the form of a rotary drum is arranged in a storage provided for this purpose in the detergent container, and is equipped with at least one radial recess, the cross section of which widens towards an ejection opening, which is controlled by a movable closure which temporarily closes the respective well while filling with a dose of detergent.
  • This preferred embodiment of the invention is characterized in particular by the limitation of the number of parts and the force required to move the moving parts, which is advantageous in terms of reliability and overall device costs.
  • the metering and adding device has a prismatic shape and at least one depression, the metering and adding device being moved in a straight line, so that the depressions are alternately brought into a position coinciding with the outlet opening of the cleaning container, a closure closes the recess, which is filled with a dose of detergent, frontally.
  • This advantageous embodiment of the invention is also characterized by a small number of parts and a limitation of the force required for movement, which is advantageous in terms of reliability and overall device costs.
  • a further simplification of the device according to the invention, via assembly and cleaning, is achieved according to a further feature of the invention in that the metering and adding device can be connected to a movement generator by plugging in by means of suitable means, the movement generator either being permanently installed in a part of the cleaning machine or is integrated in the device.
  • the plug-in option further simplifies the removal of a part of the device according to the invention and thus the filling and cleaning for the user.
  • a reduction in the number of mechanical seals - as well as further facilitating the assembly of the device according to the invention - is achieved according to a further advantageous feature of the invention in that the connecting parts of the container and / or the metering and adding device and the connecting parts of the compressed air line system by plugging together cooperate, wherein the connecting parts of the compressed air line system belong to a system permanently installed at a specific location of the cleaning machine, preferably on a front door of the cleaning machine, and wherein the connecting parts of the detergent container and / or the metering and addition device as nozzles and the connecting parts of the compressed air line system as openings are trained.
  • the plug-in option further facilitates the removal of part of the device according to the invention.
  • An improvement in the ejection effect by the compressed air flow acting on the interior of the depressions is achieved according to an advantageous embodiment of the invention in that the openings of the compressed air line system are substantially lamellar to increase the effectiveness of the air flow directed into the detergent dose filled in a depression in the addition position.
  • Penetration of moisture into the detergent container of the device according to the invention when a negative pressure occurs in the device according to the invention is advantageously prevented in that the compressed air line system is equipped with a shut-off valve which is suitable for the moisture to flow back into the detergent container even in the metering and Additive device to prevent negative pressure.
  • FIGS. 1 to 4a show the preferred embodiment of the device according to the invention, in which a detergent container 2 with a large capacity, or at least in its lower area is funnel-shaped and opens into an outlet opening 13, is formed in a box-shaped body 1.
  • the detergent container 2 can be closed watertight with a removable cover 20 which has a seal 20a.
  • a metering and adding device with a rotatable drum 4 which is driven by a reduction gear 5a (FIG. 3), is installed in the body 1 under the funnel-shaped container 2 and under the outlet opening 13 thereof.
  • the drum 4 is provided with three radial, frustoconical or truncated pyramid-shaped recesses 10 with an open cross section, the larger cross section 10 a bearing against the front inner surface of the box-shaped body 1 and the smaller cross section 10 b against the opposite parallel surface of the body 1.
  • the larger cross section 10a of a depression 10 is brought into a position opposite an ejection opening 17 arranged in the body 1.
  • the ejection opening 17 opens into a treatment container A of a water-carrying cleaning machine.
  • the smaller cross section 10b of this depression lies opposite an opening 11 of a channel 15 of the compressed air guidance system.
  • the duct 15 of the compressed air control system is connected to a compressed air generator 14, e.g. a diaphragm pump or other suitable device.
  • An arm 15a branches off from the duct 15 to feed the compressed air flow F into the interior of the detergent container 2.
  • the ends of the channel 15 and the arm 15a opposite the body 1 form openings, into which connectors 6, 7 arranged on the body 1 are inserted. With these connectors, a quick connection or disconnection of the body 1 from the compressed air system is possible.
  • the connector 6 guides the compressed air flow F into the interior of the cleaning agent container 2.
  • the connector 7 guides the compressed air flow F via the smaller cross section 10a into the interior of the depression 10.
  • the opening 11 of the compressed air line system assigned to the connector 7 is designed in the form of a lamella.
  • a closure is designated, which is set indirectly by the reduction gear in motion.
  • This closure 12 is provided with a seal 16 and slides on the flat outer surface of the body, its movement being so coordinated that it closes the fixed outlet opening 17 when one of the recesses 10 by the rotary movement of the drum 4 below the outlet opening 13 of the Detergent container 2 arrives and is filled with detergent.
  • the cleaning agent falls under the influence of gravity and the air pressure generated by the compressed air generator 14 from the cleaning agent container 2 into the recess 10 below.
  • 21, 22 denotes a valve which, when the compressed air generator 14 is at a standstill and / or when negative pressure occurs in the metering and addition device, enables the room air or moist air to be sucked out by a dehumidifier 23 connected upstream of the compressed air generator 14 and thus penetrates it Prevents moist air in the detergent container 2.
  • the compressed air line system consisting of the compressed air generator 14, the duct 15 and its arm 15a and the reduction gear 5a is preferably installed in a door P of the cleaning machine between the outer wall C and the inner wall B.
  • the device When the above-described device is controlled by a program control device of the cleaning machine, the device functions as follows:
  • the closure 12 blocks the ejection opening 17 so that the water present in the treatment tank A cannot penetrate into the depressions 10.
  • the compressed air generator 14 put into operation pumps dehumidified compressed air through the dehumidifying device 13 into the compressed air line system with the duct 15 and its arm 15a, the compressed air flowing through the arm 15a and the nozzle 6 into the cleaning container 2 acting on the cleaning agent.
  • the compressed air supplied through the channel 15 and the nozzle 7 flows out through the lamellar opening 11. If the depressions 10 are in the position shown in FIG.
  • the closure 12 which moves by a certain angle, opens the ejection opening 17 (FIG. 3) when a depression 10 lies between the ejection opening 17 and the lamellar opening 11.
  • the cleaning agent contained in the depression 10 can be completely expelled from the depression 10 under the influence of gravity and the pressure of the air flow F flowing out of the lamellar opening 11 and reach the treatment container A of the cleaning machine.
  • This process can be repeated according to the selected cleaning program until the cleaning agent contained in the cleaning agent container 2 has been completely used up.
  • the detergent container 2 has a capacity for a considerable number of cleaning cycles.
  • FIG. 5, 6 and 7 show a further embodiment of the device according to the invention, in which the metering and adding device 4b is prism-shaped and in the exemplary embodiment shown is equipped with two truncated cone-shaped depressions 10 in the exemplary embodiment.
  • the shape of the recesses 10 of the metering and adding device 4b is identical to the shape of the recesses 10 of the above-described preferred embodiment of the invention in the drum 4, ie the larger cross section of the recess is assigned to the ejection opening 17 arranged in the body 1.
  • the body 1 and the detergent container 2 and the compressed air line system with the channel 15 and its arm 15a, with the compressed air generator 14 and the dehumidifying device 23 and the outlet openings for the compressed air flow F remain unchanged.
  • the prism-shaped metering and adding device 4b can be displaced in a corresponding guide 13 relative to the ejection opening 17 of the body 1 parallel to the front wall of the body 1.
  • the ejection opening 17 is controlled by a closure 12 with a seal 16 and a pin 12a (FIG. 7), wherein the closure 12 can be moved along a slot 13 (FIGS. 5 and 6).
  • the metering and adding device 4b is alternately moved linearly by a movement generator 5b, in the embodiment shown by an electrical actuator.
  • the motion generator 5b can also consist of a thermal actuator or an electromagnet.
  • the alternating movement of the closure 12 is brought about by the movement generator 5b, which is controlled via the program control device of the cleaning machine.
  • a lid for closing the metering and adding device 4b is designated, on which the nozzle 7 is arranged.
  • the nozzle 6 is attached to the body 1.
  • the connectors 6 and 7 are inserted into the corresponding openings in the compressed air line system for the compressed air generated by the compressed air generator 14, the compressed air flow F is conducted into the cleaning agent container 2 or into the guide 3b of the metering and adding device 4b.
  • Both embodiments have in common that the body 1 are removed from the cleaning machine for cleaning or for filling with powdered cleaning agent can. After the body 1 has been reinserted, the cleaning machine can again carry out a certain number of cleaning cycles in which the detergent doses are constant and are automatically dispensed into the treatment container A of the cleaning machine until the contents of the detergent container 2 are used up again.
  • the compressed air generator 14 remains in operation and generates the compressed air flow F, which creates an internal pressure in the cleaning agent container 2 and in the metering and addition device.
  • the compressed air flow F continuously penetrates into every intermediate or hollow space and removes dust particles or foreign bodies and prevents the penetration of moisture.
  • the movement of the device according to the invention takes place in such a way that the opening of a recess 10 is opposite the outlet opening 13 of the cleaning agent container 2 during a filling state, so that the cleaning agent is conveyed from the cleaning agent container 2 into the recess 10 by gravity and by the air pressure established in the cleaning agent container 2 is and the depression 10 located under the outlet opening 13 is filled.
  • the closure 12 closes the discharge opening 17.
  • the actuation of the cylindrical metering device 4 or the prismatic metering device 4b by the movement generator 5a or 5b leads the depression 10, which is now filled with cleaning agent, into the position corresponding to the discharge opening 17 and at the same time causes the displacement of the Closure 12, which thus releases the larger cross section 10a of the recess 10 and the discharge of the detergent dose into the treatment container A either by gravity or made possible by the action of the compressed air flowing out of the lamellar opening 11.
  • the further positioning of a further recess 10 under the outlet opening 13 of the detergent container 2 takes place synchronously with the movement of the closure 12, which closes the ejection opening 17 again.
  • the valve 21, 22 built into the compressed air line system for example a ball valve, prevents the suction of moist air from the treatment container A of the cleaning machine .
  • the number of detergent doses that can be added depends directly on the size of the detergent container 2.
  • the special feature of the above-described device according to the invention is the pneumatic sealing system, which is provided especially against moisture penetration and which makes conventional seals superfluous, which, as a rule or in particular in the presence of powdery, highly abrasive cleaning agents, wear out quickly.

Abstract

Dispositif de distribution automatique répétitive de doses de produit de lavage en poudre dans des machines à laver travaillant avec de l'eau, notamment des lave-vaisselle et des lave-linge à usage ménager, qui se compose d'un réservoir de produit de lavage (2) muni d'un orifice de sortie (13) au-dessus d'un dispositif de dosage et de distribution (4, 4b) qui comporte au moins une cavité (10) pour contenir les doses individuelles d'un produit de lavage en poudre (D), qui est lui-même délivré dans le bac de traitement (A) de la machine à laver travaillant avec de l'eau. Afin d'éviter que l'humidité ne pénètre et afin de faciliter la libération de doses de produit de lavage, l'intérieur du réservoir de produit de lavage (2), ainsi qu'une conduite (3a, 3b) du dispositif de dosage et de distribution (4a, 4b) sont balayés en permanence par un courant d'air comprimé (F) produit dans un compresseur d'air (14). Le courant d'air comprimé (F) balaie également l'intérieur de la cavité (10) lorsque le dispositif est en position de distribution.

Claims (9)

  1. Dispositif de distribution automatique répétitive de doses d'un produit de lavage (D) enpoudre dans des machines à laver utilisant de l'eau, notamment dans des lave-vaisselle et des lave-linge ménagers, comprenant un récipient (2) à produit de lavage avec un orifice de sortie (13) situé au-dessus d'un dispositif (4) de dosage et de distribution qui est pourvu d'au moins une cavité (10) pouvant recevoir des doses individuelles d'un produit de lavage en poudre qui est ensuite délivré dans un récipient de traitement (A) de la machine à laver utilisant de l'eau, caractérisé par le fait que la chambre intérieure du récipient (2) à produit de lavage et le dispositif de dosage et de distribution (4, 4b) sont balayés par un flux (F) d'air sous pression qui est produit dans un générateur (14) d'air sous pression et est amené à l'aide d'un circuit (15, 15a) d'air sous pression connecté au générateur (14) et d'éléments de connexion du circuit (15, 15a) d'air sous pression;
    par le fait que le flux (F) d'air sous pression balaie en continu la chambre intérieure du récipient (2) à produit de lavage ainsi qu'un moyen de guidage (3a, 3b) du dispositif de dosage et de distribution (4, 4b) lorsque la machine à laver fonctionne,
    par le fait que le flux (F) d'air sous pression balaie également l'intérieur de la cavité (10) dans la position de distribution,
    par le fait qu'une branchede circuit (15a) part du canal (15) du circuit (15, 15a) d'air sous pression aux fins d'amener le flux (F) d'air sous pression à l'intérieur du récipient (2) à produit de lavage et
    par le fait que, dans la position de distribution, la cavité (10) est située en regard d'une embouchure du canal (15) du circuit (15,15a) d'air sous pression.
  2. Dispositif selon la revendication 1, caractérisé par le fait qu'un dispositif de déshumidification (23) est placé en amont du générateur (14) d'air sous pression.
  3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait qu'il comprend le récipient (2) à produit de lavage en forme d'entonnoir, avec un couvercle (20) séparable appliqué de manie étanche sur le récipient (2) à produit de lavage, le dispositif de dosage et de distribution (4, 4b) avec au moins une cavité (10), des éléments de connexion du récipient (2) à produit de lavage et/ou du dispositif de dosage et de distribution (4, 4b), du circuit (15, 15a) d'air sous pression connecté au générateur (14) d'air sous pression et des éléments de connexion du circuit (15,15a) d'air sous pression.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé par un dispositif de dosage et de distribution (4) en forme de tambour rotatif qui est monté dans un système de palier (3a) prévu à cet effet dans le récipient (2) à produit de lavage et comporte au moins une cavité (10) radiale dont la section s'élaargit pour former un orifice (17) déjection qui est contrôlé par un obturateur (12) mobile fermant momentanément la cavité (10) pendant son remplissage avec une dose de produit de lavage.
  5. Dispositif selon l'une des revendications 1 à 3, caractérisé par un dispositif de dosage et de distribution (4b) en forme de prisme qui comporte au moins une cavité (10) et se déplace linéairement de manière à amener les cavités (10) alternativement dans une position de recouvrement avec l'orifice de sortie (13) du récipient (2) à produit de lavage, un obturateur (12) fermant momentanément côté frontal la cavité (10) remplie avec une dose de produit de lavage.
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé par le fait que le dispositif de dosage et de distribution (4, 4b) peut être relié par enfichage à un générateur de mouvement (5a, 5b), le générateur de mouvement (5a, 5b) étant soit monté dans une partie de la machine à laver, soit intégré dans le dispositif.
  7. Dispositif selon l'une des revendications 2 à 6, caractérisé par le fait que les éléments de connexion du récipient (2) à produit de lavage et/ou du dispositif (4, 4b) de dosage et de distribution et les éléments de connexion du circuit (15, 15a) d'air sous pression coopèrent par enfichage, les éléments de connexion du circuit (15, 15a) d'air sous pression faisant partie d'un système monté fixe en un point quelconque de la machine à laver, de préférence dans la porte avant (P) de la machine à laver, et/ou les éléments de connexion du dispositif de dosage et de distribution (4, 4b) étant conformés en embouts (6, 7) et les éléments de connexion du circuit (15, 15a) d'air sous pression en ouvertures (11).
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé par le fait qu'aux fins d'augmenter l'efficacité du flux (F) d'air dirigé sur la dose de produit de lavage chargée en position de distribution, les ouvertures (11) du circuit (15, 15a) d'air sous pression ont essentiellement une forme de fentes.
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé par le fait que le circuit (15, 15a) d'air sous pression est équipé d'une vanne d'arrêt (21, 22) qui a pour fonction d'empêcher un reflux du liquide dans le récipient (2) à produit de lavage, même lorsqu'il règne une pression négative dans le dispositif (4, 4b) de dosage et de distribution.
EP93904024A 1992-03-26 1993-02-26 Dispositif de distribution automatique repetitive de doses d'un produit de lavage en poudre dans des machines a laver travaillant avec de l'eau, notamment des lave-vaisselle et des lave-linge a usage menager Expired - Lifetime EP0586633B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITTO920265A IT1259394B (it) 1992-03-26 1992-03-26 Dispositivo a grande autonomia per dosi multiple di detersivo polverulento, nelle macchine lavatrici
ITTO920265 1992-03-26
PCT/EP1993/000450 WO1993018701A1 (fr) 1992-03-26 1993-02-26 Dispositif de distribution automatique repetitive de doses d'un produit de lavage en poudre dans des machines a laver travaillant avec de l'eau, notamment des lave-vaisselle et des lave-linge a usage menager

Publications (2)

Publication Number Publication Date
EP0586633A1 EP0586633A1 (fr) 1994-03-16
EP0586633B1 true EP0586633B1 (fr) 1997-01-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP93904024A Expired - Lifetime EP0586633B1 (fr) 1992-03-26 1993-02-26 Dispositif de distribution automatique repetitive de doses d'un produit de lavage en poudre dans des machines a laver travaillant avec de l'eau, notamment des lave-vaisselle et des lave-linge a usage menager

Country Status (6)

Country Link
US (1) US5413259A (fr)
EP (1) EP0586633B1 (fr)
DE (1) DE59304949D1 (fr)
ES (1) ES2098726T3 (fr)
IT (1) IT1259394B (fr)
WO (1) WO1993018701A1 (fr)

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DE102016210397A1 (de) * 2016-06-13 2017-12-14 BSH Hausgeräte GmbH Haushalts-Geschirrspülmaschine mit einem Dosiersystem für Feststoff-Zugabemittel
DE102016224637A1 (de) 2016-12-09 2018-06-14 BSH Hausgeräte GmbH Haushalts-Geschirrspülmaschine mit einem Dosiersystem für Feststoff-Zugabemittel
DE102020100363A1 (de) * 2020-01-09 2021-07-15 Miele & Cie. Kg Dosiergerät
BE1029308B1 (de) 2021-04-14 2022-11-16 Miele & Cie Dosiergerät

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Also Published As

Publication number Publication date
EP0586633A1 (fr) 1994-03-16
WO1993018701A1 (fr) 1993-09-30
ITTO920265A0 (it) 1992-03-26
IT1259394B (it) 1996-03-13
US5413259A (en) 1995-05-09
ES2098726T3 (es) 1997-05-01
DE59304949D1 (de) 1997-02-13
ITTO920265A1 (it) 1993-09-26

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