EP0665320B1 - Device for reducing detergent wastage in a washing machine - Google Patents

Device for reducing detergent wastage in a washing machine Download PDF

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Publication number
EP0665320B1
EP0665320B1 EP94118501A EP94118501A EP0665320B1 EP 0665320 B1 EP0665320 B1 EP 0665320B1 EP 94118501 A EP94118501 A EP 94118501A EP 94118501 A EP94118501 A EP 94118501A EP 0665320 B1 EP0665320 B1 EP 0665320B1
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EP
European Patent Office
Prior art keywords
tub
tank
tunnel
object trap
trap
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 - Lifetime
Application number
EP94118501A
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German (de)
French (fr)
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EP0665320A1 (en
Inventor
Hervé Pont
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.)
Compagnie Industrielle dAppareils Menagers SA CIAPEM
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Compagnie Industrielle dAppareils Menagers SA CIAPEM
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Publication of EP0665320A1 publication Critical patent/EP0665320A1/en
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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
    • 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
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/086—Arrangements for avoiding detergent wastage in the discharge conduit

Definitions

  • the present invention relates to a loss reducer machines for washing machines. It applies to all types of washing machines.
  • European patent application 0 263 742 describes a washing machine the embodiment of which makes it possible to reduce product losses detergents.
  • the object of the invention is to overcome the aforementioned drawbacks, in particular by allowing an effective reduction of mechanical losses in washing machines.
  • the invention relates to a loss reducer washing machine machines as described in claim 1.
  • the main advantages of the invention are that it reduces the pollution of water networks by detergents, which it allows economy of quantity of detergent used, that it can be easily and effectively combined with an easy removable object trap system access located at the bottom of the tank, and that it is simple to implement.
  • FIG. 1 shows a washing machine 1, top loading by example, comprising an access door 2 connected for example to the tank 3 by through a protective sleeve 4.
  • the laundry is loaded in a drum 5 contained in the tank 3.
  • the water from the tank is evacuated to a wastewater network via a hose outlet 6 by means of a pump 7 located in the lower part of the washing machine 1 next to an evacuation well 8 located in the lower part of the tank.
  • Mechanical losses consisting mainly of products undiluted detergents not used for washing fall to the bottom of the tank or in the evacuation well.
  • these detergents are discharged with water by pump 7 without being used. They are therefore a waste that increases the amount of detergent necessary to wash on the one hand and increase pollution of networks waste water on the other hand.
  • FIG. 2 shows the washing machine 1 of Figure 1 along F and provided a mechanical loss reduction device according to the invention, represented by a possible embodiment.
  • This mechanical loss reducer is consisting of at least one tunnel 21 connecting the tank 3 to the drainage well 8, the lower part of the tunnel being constituted by a first part 22 of the bottom of the tank 3 and its upper part by a roof 23 extending a second part 24 of the bottom of the tank 3, the second part 24 of the bottom of the tank being located at a level higher than the first part 22 of the bottom of the tank.
  • the limit between the two parts 22, 24 of the bottom is substantially perpendicular to a generator of the cylindrical shell of the tank.
  • the roof 23 extends as close as possible to the side 25 of the tank 4 opposite the second upper part 24 of the bottom, a necessary space to be reserved between the roof 23 and this side 25 to allow good water drainage.
  • Undiluted detergent then tends to settle on the upper part 24 or on the roof 23 of the tunnel 21.
  • This upper part 24 and this roof 23 being relatively close to the drum 5, the water included between these and the latter is agitated because of the rotary movement of the drum, which drives the detergents upwards and promotes their dilution as well as their use for washing.
  • Figure 3 shows an example of tank bottom realization allowing the production of a mechanical loss reduction device according to the invention.
  • the bottom of the tank 3 has a first lower part 22 and a second upper part 24.
  • the lower part 22 extends by example the cylindrical casing 31 of the tank 3 while two folds 32 on this cylindrical envelope limit two sides of the upper part 24 from the bottom of the tank, these folds 32 being due for example to the difference of radius of curvature of the cylindrical casing 31 and of the lower part 22 of the tank on the one hand and the radius of curvature of the upper part 24 on the other hand, the radius of curvature of the upper part 24 being higher than that of the lower part 22.
  • the upper part 24 is by example pierced by a corridor 33, the lower part of which extends the part lower 22 of the bottom of the tank.
  • This corridor 33 leads to the well drain 8 from the tank.
  • Side 34 of the corridor opposite its entrance extends for example one side 35 of the evacuation well 8.
  • the side 34 of the corridor opposite its entry can also for example belong to the side 25 of the tank 3 opposite the lower part 22 of the bottom from his tank.
  • the shape of the tank bottom presented in FIG. 3 can for example be obtained by molding.
  • FIG. 4 shows the formation of the tunnel 21 obtained using this shape of the bottom of the tank 3.
  • the corridor 33 is covered by a roof 23, the tunnel 21 then being formed by corridor 33 covered with this roof 23.
  • the roof 23 stops for example at the entrance to corridor 33 and at the sides 41 of the upper part 24 of the bottom of the tank 3, these sides 41 resulting from the difference in curvature between the two parts 22, 24 of the bottom of the tank 3.
  • the roof 23 can however for example exceed these two sides 41 to extend to the other side of the tank.
  • the roof 23 and these two sides 41 can be brought as close as possible to side 42 of the tank 3 opposite the upper part 24 of its bottom, so that the minimum amount of detergent is deposited on the lower part 22 of the bottom of tank.
  • the detergent deposited on this lower part 22 from the bottom is practically not driven towards the evacuation well 8 as long as pump 7 does not work. Only a very small part of the product detergent is likely to reach the drainage well.
  • the product detergent deposited on the lower part 22 of the bottom of the tank can by elsewhere partially manage to be driven by the drum 5, certainly so less effective than that deposited in the upper part of the bottom. He can be thus used for washing.
  • the detergent deposited on the bottom bottom 22 is all the more easily used for washing as the difference in level between the two parts 22, 24 of the bottom of the tank 3 is weak.
  • this is the part bottom 22 of the bottom which extends the cylindrical casing 31 of the tank and has so the same radius of curvature as this one, however it can be the reverse. That is to say that the upper part 24 of the bottom can extend the cylindrical casing 31 of the tank, the folds 32 then being located between the latter and the lower part 22 of the bottom, the radius of curvature of which is lower than that of the cylindrical casing 31.
  • the roof 23 of the tunnel can be attached or molded with the tank 3. However, for ease of molding the tank, it may be preferable to report it. It can for example be removable.
  • It is preferably arranged so as not to cause difference in level on the upper part 24 of the bottom of the tank.
  • FIG. 5 shows an exemplary embodiment of a reduction gear mechanical losses according to the invention equipped with an object trap.
  • the tank 3 is shown in section, at the axis of symmetry of the roof 23 of the tunnel, this axis being perpendicular to the two sides 25, 42 of the tank.
  • the roof is drilled above the evacuation well 8 to allow the passage of an object trap 51, preferably removable, the part of which upper is fixed or placed on the roof 23, for example by means of notches 52 on which the upper edges of the trap come to rest 51.
  • the latter has a first opening 53 overlooking the tunnel 21 and a second opening 54 giving into the evacuation well 8. It has for example inside a downward wall 55 connected to its upper part, with its cover for example. This is for example of spherical shape sinking into the object trap in order to leave a taken not exceeding the roof 23 of the tunnel.
  • the descending wall 55 leaves a passage between it and the bottom of the object trap.
  • the falling wall 55 descends for example to a level such that it prevents the two openings 53, 54 of the object trap to give one on the other, which forces the flow of water to go to the bottom of the object trap, objects 56 remaining trapped at the bottom of the object trap.
  • Arrows 57 illustrate in Figure 5 the flow of water when emptying the tank 3.
  • the water first passes through tunnel 21, then through the first opening 53 of the trap objects towards the bottom of the latter.
  • Objects 56 such as coins coins for example or any other small objects, remain prisoners at the bottom of the object trap, the water rising to the second exit 54 of the trap to go into the evacuation well 8 and exit by a opening opposite the blades 58 of the pump 7. It is then directed towards the outlet 59 for discharging water from the tank which is for example connected to the drain hose 6.
  • an opening 61 is for example made in the drum 5 as shown in Figure 6 to allow the object trap 51 located at the bottom of the tank 3 to be removed, and therefore to recover the objects held captive. Access to the object trap is very easy and in particular does not require removing the wash water.

Description

La présente invention concerne un réducteur de pertes mécaniques pour lave-linge. Elle s'applique à tous types de lave-linge.The present invention relates to a loss reducer machines for washing machines. It applies to all types of washing machines.

Dans le domaine des lave-linge, les pertes mécaniques sont essentiellement constituées de produits lessiviels non dilués et non utilisés pour le lavage. Ces pertes se traduisent généralement par le fait qu'une partie du produit lessiviel, au lieu de servir au lavage, se dépose directement en fond de cuve, et plus particulièrement dans le puits d'évacuation de la cuve relié à la pompe. Dans ce cas, les produits lessiviels s'engagent alors par la suite directement dans le tuyau de raccordement au réseau d'eaux usées sans avoir participé au lavage.In the washing machine sector, mechanical losses are mainly consisting of undiluted and undiluted detergents used for washing. These losses generally result in the fact that part of the detergent, instead of being used for washing, is deposited directly at the bottom of the tank, and more particularly in the well evacuation of the tank connected to the pump. In this case, the products detergents then engage directly in the hose connection to the wastewater network without having participated in the washing.

Ce phénomène de pertes mécaniques a au moins deux conséquences néfastes. Une première réside dans le gaspillage de lessive qui entraíne un surcoût pour les utilisateurs. Une deuxième conséquence réside dans l'augmentation de la pollution du réseau d'eau par le produit lessiviel et le fait notamment que par la suite la machine ne répond pas à des normes de pollution imposées.This phenomenon of mechanical losses has at least two bad consequences. A first lies in the waste of detergent which entails an additional cost for users. A second consequence is the increase in pollution of the water network by the detergent and the fact in particular that thereafter the machine does not meet imposed pollution standards.

Une demande de brevet européen 0 263 742 décrit un lave-linge dont le mode de réalisation permet de réduire les pertes de produits lessiviels.European patent application 0 263 742 describes a washing machine the embodiment of which makes it possible to reduce product losses detergents.

Le but de l'invention est de pallier les inconvénients précités, notamment en permettant une réduction efficace des pertes mécaniques dans les lave-linge.The object of the invention is to overcome the aforementioned drawbacks, in particular by allowing an effective reduction of mechanical losses in washing machines.

A cet effet, l'invention a pour objet un réducteur de pertes mécaniques pour lave-linge tel que décrit par la revendication 1.To this end, the invention relates to a loss reducer washing machine machines as described in claim 1.

L'invention a pour principaux avantages qu'elle réduit la pollution des réseaux d'eau par les produits lessiviels, qu'elle permet une économie de quantité de lessive utilisée, qu'elle peut être facilement et efficacement combinée à un système de piège à objets amovible facile d'accès situé en fond de cuve, et qu'elle est simple à mettre en oeuvre. The main advantages of the invention are that it reduces the pollution of water networks by detergents, which it allows economy of quantity of detergent used, that it can be easily and effectively combined with an easy removable object trap system access located at the bottom of the tank, and that it is simple to implement.

D'autres caractéristiques et avantages de l'invention apparaítront à l'aide de la description qui suit faite en regard de dessins annexés qui représentent :

  • la figure 1, un lave-linge;
  • la figure 2, un lave-linge équipé d'un réducteur de pertes mécaniques selon l'invention ;
  • la figure 3, une forme de fond de cuve permettant la réalisation d'un réducteur de pertes mécaniques selon l'invention ;
  • la figure 4, un mode de réalisation possible d'un réducteur de pertes mécanique à partir du fond de cuve illustré par la figure 3 ;
  • la figure 5, un réducteur de pertes mécaniques selon l'invention équipé d'un piège à objets ;
  • La figure 6, un mode d'accès à un piège à objet équipant un réducteur de pertes mécaniques selon l'invention.
Other characteristics and advantages of the invention will become apparent with the aid of the description which follows given with reference to the appended drawings which represent:
  • Figure 1, a washing machine;
  • Figure 2, a washing machine equipped with a mechanical loss reducer according to the invention;
  • Figure 3, a tank bottom shape for the realization of a mechanical loss reducer according to the invention;
  • FIG. 4, a possible embodiment of a mechanical loss reducer from the bottom of the tank illustrated in FIG. 3;
  • Figure 5, a mechanical loss reducer according to the invention equipped with an object trap;
  • Figure 6, a mode of access to an object trap fitted with a mechanical loss reducer according to the invention.

La figure 1 présente un lave-linge 1, à chargement par le haut par exemple, comprenant une porte d'accès 2 reliée par exemple à la cuve 3 par l'intermédiaire d'un manchon de protection 4. Le linge est chargé dans un tambour 5 contenu dans la cuve 3. A la fin d'une phase de lavage, l'eau de la cuve est évacuée vers un réseau d'eau usée par l'intermédiaire d'un tuyau d'évacuation 6 au moyen d'une pompe 7 située dans la partie basse du lave-linge 1 en regard d'un puits d'évacuation 8 situé dans la partie basse de la cuve. Les pertes mécaniques, constituées principalement de produits lessiviels non dilués et non utilisés pour le lavage tombent en fond de cuve ou dans le puits d'évacuation. Au moment de la vidange de la cuve, ces produits lessiviels sont évacués avec l'eau par la pompe 7 sans avoir servi. Ils constituent donc un gaspillage qui augmente la quantité de lessive nécessaire au lavage d'une part et augmentent la pollution des réseaux d'eau usée d'autre part.Figure 1 shows a washing machine 1, top loading by example, comprising an access door 2 connected for example to the tank 3 by through a protective sleeve 4. The laundry is loaded in a drum 5 contained in the tank 3. At the end of a washing phase, the water from the tank is evacuated to a wastewater network via a hose outlet 6 by means of a pump 7 located in the lower part of the washing machine 1 next to an evacuation well 8 located in the lower part of the tank. Mechanical losses, consisting mainly of products undiluted detergents not used for washing fall to the bottom of the tank or in the evacuation well. When the tank is emptied, these detergents are discharged with water by pump 7 without being used. They are therefore a waste that increases the amount of detergent necessary to wash on the one hand and increase pollution of networks waste water on the other hand.

La figure 2 présente le lave-linge 1 de la figure 1 selon F et muni d'un réducteur de pertes mécaniques selon l'invention, représenté par un mode de réalisation possible. Ce réducteur de pertes mécaniques est constitué au moins d'un tunnel 21 reliant la cuve 3 au puits d'évacuation 8, la partie inférieure du tunnel étant constituée par une première partie 22 du fond de la cuve 3 et sa partie supérieure par un toit 23 prolongeant une deuxième partie 24 du fond de la cuve 3, la deuxième partie 24 du fond de la cuve étant située à un niveau supérieur à la première partie 22 du fond de la cuve. La limite entre les deux parties 22, 24 du fond est sensiblement perpendiculaire à une génératrice de l'enveloppe cylindrique de la cuve. De préférence, le toit 23 se prolonge le plus près possible du côté 25 de la cuve 4 opposé à la deuxième partie supérieure 24 du fond, un espace nécessaire devant être réservé entre le toit 23 et ce côté 25 pour permettre une bonne évacuation de l'eau.Figure 2 shows the washing machine 1 of Figure 1 along F and provided a mechanical loss reduction device according to the invention, represented by a possible embodiment. This mechanical loss reducer is consisting of at least one tunnel 21 connecting the tank 3 to the drainage well 8, the lower part of the tunnel being constituted by a first part 22 of the bottom of the tank 3 and its upper part by a roof 23 extending a second part 24 of the bottom of the tank 3, the second part 24 of the bottom of the tank being located at a level higher than the first part 22 of the bottom of the tank. The limit between the two parts 22, 24 of the bottom is substantially perpendicular to a generator of the cylindrical shell of the tank. Of preferably, the roof 23 extends as close as possible to the side 25 of the tank 4 opposite the second upper part 24 of the bottom, a necessary space to be reserved between the roof 23 and this side 25 to allow good water drainage.

Le produit lessiviel non dilué a alors tendance à se déposer sur la partie supérieure 24 ou sur le toit 23 du tunnel 21. Cette partie supérieure 24 et ce toit 23 étant relativement proches du tambour 5, l'eau comprise entre ceux-ci et ce dernier est agitée à cause du mouvement rotatif du tambour, ce qui entraíne les produits lessiviels vers le haut et favorise leur dilution ainsi que leur utilisation pour le lavage.Undiluted detergent then tends to settle on the upper part 24 or on the roof 23 of the tunnel 21. This upper part 24 and this roof 23 being relatively close to the drum 5, the water included between these and the latter is agitated because of the rotary movement of the drum, which drives the detergents upwards and promotes their dilution as well as their use for washing.

La figure 3 présente un exemple de réalisation de fond de cuve permettant la réalisation d'un réducteur de pertes mécaniques selon l'invention. Le fond de la cuve 3 comporte une première partie inférieure 22 et une deuxième partie supérieure 24. La partie inférieure 22 prolonge par exemple l'enveloppe cylindrique 31 de la cuve 3 tandis que deux pliures 32 sur cette enveloppe cylindrique limitent deux côtés de la partie supérieure 24 du fond de la cuve, ces pliures 32 étant dues par exemple à la différence de rayon de courbure de l'enveloppe cylindrique 31 et de la partie inférieure 22 de la cuve d'une part et le rayon de courbure de la partie supérieure 24 du fond d'autre part, le rayon de courbure de la partie supérieure 24 étant supérieur à celui de la partie inférieure 22. La partie supérieure 24 est par exemple percée par un couloir 33 dont la partie inférieure prolonge la partie inférieure 22 du fond de la cuve. Ce couloir 33 débouche sur le puits d'évacuation 8 de la cuve. Le côté 34 du couloir opposé à son entrée prolonge par exemple un côté 35 du puits d'évacuation 8.Figure 3 shows an example of tank bottom realization allowing the production of a mechanical loss reduction device according to the invention. The bottom of the tank 3 has a first lower part 22 and a second upper part 24. The lower part 22 extends by example the cylindrical casing 31 of the tank 3 while two folds 32 on this cylindrical envelope limit two sides of the upper part 24 from the bottom of the tank, these folds 32 being due for example to the difference of radius of curvature of the cylindrical casing 31 and of the lower part 22 of the tank on the one hand and the radius of curvature of the upper part 24 on the other hand, the radius of curvature of the upper part 24 being higher than that of the lower part 22. The upper part 24 is by example pierced by a corridor 33, the lower part of which extends the part lower 22 of the bottom of the tank. This corridor 33 leads to the well drain 8 from the tank. Side 34 of the corridor opposite its entrance extends for example one side 35 of the evacuation well 8.

Le côté 34 du couloir opposé à son entrée peut aussi par exemple appartenir au côté 25 de la cuve 3 opposé à la partie inférieure 22 du fond de sa cuve.The side 34 of the corridor opposite its entry can also for example belong to the side 25 of the tank 3 opposite the lower part 22 of the bottom from his tank.

La forme du fond de cuve présentée en figure 3 peut par exemple être obtenue par moulage.The shape of the tank bottom presented in FIG. 3 can for example be obtained by molding.

La figure 4 présente la formation du tunnel 21 obtenu à l'aide de cette forme du fond de cuve 3. Le couloir 33 est recouvert par un toit 23, le tunnel 21 étant alors formé par le couloir 33 recouvert de ce toit 23. Le toit 23 s'arrête par exemple à l'entrée du couloir 33 et au niveau des côtés 41 de la partie supérieure 24 du fond de la cuve 3, ces côtés 41 résultant de la différence de courbure entre les deux parties 22, 24 du fond de la cuve 3.FIG. 4 shows the formation of the tunnel 21 obtained using this shape of the bottom of the tank 3. The corridor 33 is covered by a roof 23, the tunnel 21 then being formed by corridor 33 covered with this roof 23. The roof 23 stops for example at the entrance to corridor 33 and at the sides 41 of the upper part 24 of the bottom of the tank 3, these sides 41 resulting from the difference in curvature between the two parts 22, 24 of the bottom of the tank 3.

Le toit 23 peut cependant par exemple dépasser ces deux côtés 41 pour se prolonger jusqu'à l'autre côté de la cuve. Le toit 23 ainsi que ces deux côtés 41 peuvent être rapprochés le plus près possible du côté 42 de la cuve 3 opposé à la partie supérieure 24 de son fond, de façon à ce que le minimum de produit lessiviel se dépose sur la partie inférieure 22 du fond de la cuve. Cependant, le produit lessiviel déposé sur cette partie inférieure 22 du fond n'est pratiquement pas entraíné vers le puits d'évacuation 8 tant que la pompe 7 ne fonctionne pas. Seule une très faible partie de produit lessiviel est susceptible de parvenir dans le puits d'évacuation. Le produit lessiviel déposé sur la partie inférieure 22 du fond de la cuve peut par ailleurs parvenir en partie à être entraíné par le tambour 5, certes de façon moins efficace que celui déposé en partie supérieure du fond. Il peut être ainsi utilisé pour le lavage. Le produit lessiviel déposé sur le fond inférieur 22 est d'autant plus facilement utilisé pour le lavage que la dénivellation entre les deux parties 22, 24 du fond de la cuve 3 est faible.The roof 23 can however for example exceed these two sides 41 to extend to the other side of the tank. The roof 23 and these two sides 41 can be brought as close as possible to side 42 of the tank 3 opposite the upper part 24 of its bottom, so that the minimum amount of detergent is deposited on the lower part 22 of the bottom of tank. However, the detergent deposited on this lower part 22 from the bottom is practically not driven towards the evacuation well 8 as long as pump 7 does not work. Only a very small part of the product detergent is likely to reach the drainage well. The product detergent deposited on the lower part 22 of the bottom of the tank can by elsewhere partially manage to be driven by the drum 5, certainly so less effective than that deposited in the upper part of the bottom. He can be thus used for washing. The detergent deposited on the bottom bottom 22 is all the more easily used for washing as the difference in level between the two parts 22, 24 of the bottom of the tank 3 is weak.

Dans l'exemple de réalisation des figures 3 et 4, c'est la partie inférieure 22 du fond qui prolonge l'enveloppe cylindrique 31 de la cuve et a donc le même rayon de courbure que celui-ci, cependant ce peut être l'inverse. C'est à dire que la partie supérieure 24 du fond peut prolonger l'enveloppe cylindrique 31 de la cuve, les pliures 32 étant situées alors entre ce dernier et la partie inférieure 22 du fond dont le rayon de courbure est inférieur à celui de l'enveloppe cylindrique 31.In the embodiment of Figures 3 and 4, this is the part bottom 22 of the bottom which extends the cylindrical casing 31 of the tank and has so the same radius of curvature as this one, however it can be the reverse. That is to say that the upper part 24 of the bottom can extend the cylindrical casing 31 of the tank, the folds 32 then being located between the latter and the lower part 22 of the bottom, the radius of curvature of which is lower than that of the cylindrical casing 31.

Le toit 23 du tunnel peut être rapporté ou moulé avec le cuve 3. Cependant, pour des facilités de moulage de la cuve, il peut être préférable de le rapporter. Il peut être par exemple amovible.The roof 23 of the tunnel can be attached or molded with the tank 3. However, for ease of molding the tank, it may be preferable to report it. It can for example be removable.

Il est de préférence disposé de façon à ne pas provoquer de dénivellation sur la partie supérieure 24 du fond de la cuve.It is preferably arranged so as not to cause difference in level on the upper part 24 of the bottom of the tank.

La figure 5 présente un exemple de réalisation d'un réducteur de pertes mécaniques selon l'invention équipé d'un piège à objets. La cuve 3 est représentée en coupe, au niveau de l'axe de symétrie du toit 23 du tunnel, cet axe étant perpendiculaire aux deux côtés 25, 42 de la cuve. FIG. 5 shows an exemplary embodiment of a reduction gear mechanical losses according to the invention equipped with an object trap. The tank 3 is shown in section, at the axis of symmetry of the roof 23 of the tunnel, this axis being perpendicular to the two sides 25, 42 of the tank.

Le toit est percé au dessus du puits d'évacuation 8 pour permettre le passage d'un piège à objets 51, de préférence amovible, dont la partie supérieure se fixe ou se pose sur le toit 23, grâce par exemple à des encoches 52 sur lesquelles viennent se poser les bords supérieurs du piège à objets 51. Ce dernier possède une première ouverture 53 donnant sur le tunnel 21 et une deuxième ouverture 54 donnant dans le puits d'évacuation 8. Il possède par exemple à l'intérieur une paroi descendante 55 reliée à sa partie supérieure, à son couvercle par exemple. Celui-ci est par exemple de forme sphérique s'enfonçant dans le piège à objets afin de laisser une prise ne dépassant pas le toit 23 du tunnel. La paroi descendante 55 laisse un passage entre elle et le fond du piège à objet. La paroi descendante 55 descend par exemple à un niveau tel qu'elle empêche les deux ouvertures 53, 54 du piège à objets de donner l'une sur l'autre, ce qui force l'écoulement de l'eau à se diriger vers le fond du piège à objet, les objets 56 restant alors prisonniers au fond du piège à objets. Des flèches 57 illustrent sur la figure 5 l'écoulement de l'eau lors de la vidange de la cuve 3. L'eau passe d'abord par le tunnel 21, puis par la première ouverture 53 du piège à objets vers le fond de ce dernier. Des objets 56 tels que des pièces de monnaies par exemple ou tout autres objets de petites dimensions, restent prisonniers au fond du piège à objets, l'eau remontant vers la deuxième sortie 54 du piège pour aller dans le puits d'évacuation 8 et sortir par une ouverture en regard des pales 58 de la pompe 7. Elle est alors dirigée vers la sortie 59 d'évacuation d'eau de la cuve qui est par exemple reliée au tuyau 6 d'évacuation.The roof is drilled above the evacuation well 8 to allow the passage of an object trap 51, preferably removable, the part of which upper is fixed or placed on the roof 23, for example by means of notches 52 on which the upper edges of the trap come to rest 51. The latter has a first opening 53 overlooking the tunnel 21 and a second opening 54 giving into the evacuation well 8. It has for example inside a downward wall 55 connected to its upper part, with its cover for example. This is for example of spherical shape sinking into the object trap in order to leave a taken not exceeding the roof 23 of the tunnel. The descending wall 55 leaves a passage between it and the bottom of the object trap. The falling wall 55 descends for example to a level such that it prevents the two openings 53, 54 of the object trap to give one on the other, which forces the flow of water to go to the bottom of the object trap, objects 56 remaining trapped at the bottom of the object trap. Arrows 57 illustrate in Figure 5 the flow of water when emptying the tank 3. The water first passes through tunnel 21, then through the first opening 53 of the trap objects towards the bottom of the latter. Objects 56 such as coins coins for example or any other small objects, remain prisoners at the bottom of the object trap, the water rising to the second exit 54 of the trap to go into the evacuation well 8 and exit by a opening opposite the blades 58 of the pump 7. It is then directed towards the outlet 59 for discharging water from the tank which is for example connected to the drain hose 6.

Le piège à objets étant situé en fond de cuve, une ouverture 61 est par exemple réalisée dans le tambour 5 comme le montre la figure 6 pour permettre de sortir le piège à objet 51 situé en fond de cuve 3, et donc de récupérer les objets retenus prisonniers. L'accès au piège à objet est très facile et ne nécessite notamment pas de retirer l'eau de lavage.The object trap being located at the bottom of the tank, an opening 61 is for example made in the drum 5 as shown in Figure 6 to allow the object trap 51 located at the bottom of the tank 3 to be removed, and therefore to recover the objects held captive. Access to the object trap is very easy and in particular does not require removing the wash water.

D'autres types de pièges à objets peuvent équiper un réducteur de pertes mécaniques selon l'invention.Other types of object traps can equip a reducer mechanical losses according to the invention.

Claims (6)

  1. Physical waste reducer for washing machine (1), consisting of at least one tunnel (21) connecting the tub (3) to a sump (8) situated in the lower part of the tub (3), the lower part of the tunnel (21) being formed by a first part (22) of the bottom of the tub (3) and its upper part being formed by a cover (23) that is a continuation of a second part (24) of the bottom of the tub, the second part (24) being at a higher level than the first part (22), characterized in that, the boundary between the two parts being substantially perpendicular to a generatrix of the cylindrical envelope (31) of the tub, the cover (23) of the tunnel over the sump (8) is pierced to allow insertion of an object trap (51) into the sump (8), which object trap (51) is fixed at its upper end to the cover (23) of the tunnel (21).
  2. Physical waste reducer according to Claim 1, characterized in that the first part (22) of the bottom of the tub (3) is a continuation of the cylindrical envelope (31) of the tub (3), the second part (24) of the bottom having a larger radius of curvature than the cylindrical envelope (31).
  3. Physical waste reducer according to Claim 1, characterized in that the second part (24) of the bottom of the tub (3) is a continuation of the cylindrical envelope (31) of the tub (3), the first part (22) having a smaller radius of curvature than the cylindrical envelope (31).
  4. Physical waste reducer according to any one of the preceding claims, characterized in that the cover (23) of the tunnel (21) extends beyond the sides (41) of the second part (24) which are formed by the difference between the radii of the two parts (22, 24) of the bottom of the tub, and continues towards the further side (42) of the tub (3) away from the second part (24).
  5. Physical waste reducer according to any one of the preceding claims, characterized in that the object trap is removable.
  6. Physical waste reducer according to any one of the preceding claims, characterized in that the object trap (51) contains a first opening (53) that opens onto the tunnel (21) and a second opening (54) that opens into the sump (8), and an internal descending wall (55) connected to the upper end of the object trap (51) is situated between the two openings (53, 54), the descending wall leaving a path for the water to flow between it and the bottom of the object trap (51), and objects remaining caught in the bottom of the object trap (51).
EP94118501A 1993-12-23 1994-11-23 Device for reducing detergent wastage in a washing machine Expired - Lifetime EP0665320B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9315546 1993-12-23
FR9315546A FR2714400B1 (en) 1993-12-23 1993-12-23 Reduction of mechanical losses in particular of losses of detergents, for washing machine.

Publications (2)

Publication Number Publication Date
EP0665320A1 EP0665320A1 (en) 1995-08-02
EP0665320B1 true EP0665320B1 (en) 1998-10-14

Family

ID=9454309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118501A Expired - Lifetime EP0665320B1 (en) 1993-12-23 1994-11-23 Device for reducing detergent wastage in a washing machine

Country Status (5)

Country Link
EP (1) EP0665320B1 (en)
DE (1) DE69413943T2 (en)
ES (1) ES2125390T3 (en)
FR (1) FR2714400B1 (en)
HK (1) HK1012032A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2815648B1 (en) * 2000-10-23 2003-01-17 Ciapem FILTRATION DEVICE FOR A WASHING MACHINE
FR2818671B1 (en) * 2000-12-26 2003-04-25 Ciapem FILTRATION DEVICE FOR A WASHING MACHINE
WO2010062202A1 (en) 2008-11-28 2010-06-03 Fisher & Paykel Appliances Limited Filter and appliances including the filter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2345888A1 (en) * 1973-09-12 1975-03-20 Licentia Gmbh Liquid container for domestic washing-machines - consists of concrete, heavy spar or the like
FR2604456B1 (en) * 1986-09-26 1988-11-10 Ciapem SYNTHETIC TANK WASHING MACHINE

Also Published As

Publication number Publication date
ES2125390T3 (en) 1999-03-01
HK1012032A1 (en) 1999-07-23
FR2714400B1 (en) 1996-01-26
DE69413943T2 (en) 1999-03-11
FR2714400A1 (en) 1995-06-30
EP0665320A1 (en) 1995-08-02
DE69413943D1 (en) 1998-11-19

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