EP0524102A1 - Washing machine with improved functioning - Google Patents

Washing machine with improved functioning Download PDF

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Publication number
EP0524102A1
EP0524102A1 EP92402063A EP92402063A EP0524102A1 EP 0524102 A1 EP0524102 A1 EP 0524102A1 EP 92402063 A EP92402063 A EP 92402063A EP 92402063 A EP92402063 A EP 92402063A EP 0524102 A1 EP0524102 A1 EP 0524102A1
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EP
European Patent Office
Prior art keywords
ceiling
reel
tank
liquid
cleaning
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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.)
Granted
Application number
EP92402063A
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German (de)
French (fr)
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EP0524102B1 (en
Inventor
Camille Barbier
Benoît Gailledrat
Jean-Michel Theau
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.)
Esswein SA
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Esswein SA
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Publication of EP0524102A1 publication Critical patent/EP0524102A1/en
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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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays

Definitions

  • the present invention relates to a dishwasher with improved operation.
  • Some known dishwashers include at the ceiling of their tank a “ceiling” spray reel.
  • This "ceiling” watering reel is usually intended either for a main washing of the dishes in their upper basket, or for additional watering of these dishes, the main washing of which is provided by an upper watering reel arranged below their upper basket for dishes.
  • the liquid jets sent by this "ceiling" reel are mainly directed laterally and downwards on the dishes below. Some of these jets reach the side walls of the tank, but these jets are not oriented towards the ceiling of this tank only randomly or partially.
  • this reel "ceiling" of watering is often bulky.
  • Certain other known dishwashers include, at the level of the ceiling of their tank, a fixed "ceiling" nozzle for supplying liquid to a watering reel supported by their upper basket for dishes.
  • This fixed “ceiling” nozzle may have two or more lateral outlets which emit fixed jets of liquid falling in rain on the dishes below in the upper basket for dishes. These fixed jets of liquid from the “ceiling” nozzle are directed laterally and downwards and perform additional watering of these dishes, the main washing of which is provided by the supported watering reel. by the upper dish basket.
  • the present invention aimed at avoiding these drawbacks, makes it possible to produce a dishwasher having an excellent functioning in which the washing and / or rinsing of the dishes is greatly improved, and gives a dish washed and / or rinsed with food particles.
  • a dishwasher provided in its tank with a lower watering reel and an upper watering reel associated with the lower and upper basket for dishes, is characterized in that it comprises in addition to lower and upper sprinkler reels, a reel for voluntary cleaning of the entire surface of the tank ceiling.
  • a dishwasher 1 represented diagrammatically by broken lines comprises a tank 2, a lower dish basket 3, an upper dish basket 4, lower 5 and upper 6 reels and a sump 8 in the bottom of the tank 2.
  • Sump 8 is in communication, on the one hand to through an inlet pipe 9 with a liquid recycling pump 10 which sucks liquid into this sump and discharges it through pipes 12 and 13 into the lower 5 and upper 6 reels, and on the other hand to through an inlet 14, with a drain pump 18 which collects liquid in the lowest part of this sump 8 and discharges it outwards through a drain pipe 19.
  • a liquid recycling pump 10 which sucks liquid into this sump and discharges it through pipes 12 and 13 into the lower 5 and upper 6 reels, and on the other hand to through an inlet 14, with a drain pump 18 which collects liquid in the lowest part of this sump 8 and discharges it outwards through a drain pipe 19.
  • the sump 8 is covered by a medium filter 20 and a coarse filter 22.
  • the medium filter 20 separates the recycling pump 10, from the tank 2 and from the inlet 14 of the drain pump 18, and puts the tank 2 in communication with the inlet 14 of the drain pump 18 through its tubular opening 21 in which the coarse filter 22 is mounted.
  • a microfilter 40 is mounted in the tank 2 and filters the small food particles or microparticles carried by a stream of liquid sent by the recycling pump 10 through a bypass pipe 27, and a nozzle 42 disposed in the inlet 14 from the drain pump 18. This liquid stream represents only a fraction of the liquid discharged by the recycling pump 10.
  • the microfilter 40 allows filtered liquid to pass into the tank 2 and retains food microparticles.
  • a non-return valve 16 separates the intake opening of the drain pump 18 and the inlet 14.
  • the non-return valve 16 is open only in the direction of the drain pump 18 and closed in the opposite direction.
  • the medium filter 20, the coarse filter 22 and the microfilter 40 gradually retain the food particles present in the washing or rinsing liquid.
  • liquid streams form pass from the tank 2 through the medium filter 20, the coarse filter 22 and the microfilter 40, into the inlet 14 of this drain pump 18 then entrain food particles retained by the medium filter 20 and the microfilter 40 and discharge them outwards through the drain pipe 19.
  • the large food particles retained by the coarse filter 22 are removed manually during cleaning of this filter 22.
  • the average residence time of food particles on the ceiling of their tank is greater than that of food particles on dishes, which requires a relatively large number of rinses in these known dishwashers without the dishes being washed and rinsed in these devices is free of traces of food particles on its surface.
  • a dishwasher for having quickly got rid of food particles, comprises in addition to the upper and lower reels associated with the lower and upper baskets for dishes, a reel for voluntary cleaning of the entire surface of the ceiling of the tank.
  • This reel for cleaning the tank ceiling performs a double function, a main function of sweeping the surface of this ceiling by means of liquid jets and a subsidiary function of watering the dishes in the upper and lower basket for dishes. rain of liquid coming from these jets of liquid returned by this ceiling.
  • the ceiling of the tank of this dishwasher is free of food particles, that the washing and / or rinsing of the dishes are significantly improved by additional watering of these dishes operated by the voluntary cleaning reel of the ceiling of the tank, that the microparticles are no longer found in a lesser way in the microfilter, in the last rinses, that an optimal purification of each of the washing and rinsing baths is carried out, and that the number of baths in a program of operation can be reduced while obtaining washed and rinsed dishes free of traces of food particles.
  • the dishwasher 1 comprises, in the vicinity of the ceiling 46 of the tank 2, a reel 49 for cleaning the tank ceiling and a mixed part 50 serving both as a nozzle 51 supply of liquid to the upper sprinkler reel 6, axis 53 of rotation to this reel 49 for cleaning the tank ceiling and water distributor for this same reel.
  • the reel 49 for cleaning the tank ceiling consists of a circular, polygonal or elongated box 54 provided on the one hand with a tubular hub 55 cut transversely in two by a circular transverse slot 56 (FIG. 2) or a circular transverse row openings (not shown) serving as a liquid inlet channel and on the other hand one or more orifices or nozzles 57 oriented towards the ceiling 46 of tank 2 and giving at their outlet one or more jets of liquid sweeping during the rotation of this reel 49 the entire extent of the surface of this ceiling 46.
  • the mixed part 50 comprises a tubular body which, serving as an axis 53 of rotation or reel 49 for cleaning the tank ceiling, comprises at one end, an axial nozzle 51 for supplying liquid to the upper sprinkler reel 6 and a radial flange 59.
  • This flange 59 serves both as a support stop for the reel 49 for cleaning the tank ceiling and as a socket for mounting the mixed part 50 on the end of the pipe 13 connected to the pump. liquid recycling 10.
  • the tubular body of the mixed part 50 serving as an axis of rotation 53 of the reel 49 for cleaning the tank ceiling comprises in its wall on the one hand at least one radial opening 62 for supplying liquid to the reel 49 for cleaning the tank ceiling and on the other hand on both sides of this or these radial openings 62 two circular transverse grooves 64, 65 open towards the outside of this tubular body and intended to ensure good guidance and sealing satisfactory.
  • the recycling pump 10 sucks liquid into the sump 8 and discharges it through the pipes 12, 13, 27.
  • the stream of liquid discharged through the pipe 13 is divided into two parts at the level of the mixed part 50, a part passing through the nozzle 51 crossing a space in the air 70 and entering via a pipe 71 in the upper spray reel 6 and a part passing through the radial openings 62, the transverse slot 56 entering the reel 49 for cleaning the tank ceiling and leaving the orifices or nozzles 57 under form of liquid jets 75 which sweep the surface of the ceiling 46 and entrain food particles which deposit there before being returned by this ceiling 46 and falling in rain on the dishes in the upper 4 and lower 3 basket for dishes .
  • the ceiling 46 of the tank 2 is thus voluntarily cleaned continuously and throughout its entire surface by jets of liquid 75 from the reel 49 which quickly regularly and progressively entrain food particles which are there deposit.
  • the average residence time of food particles on the ceiling is then equivalent to the average residence time of food particles on the surface of the dishes in baskets 3 and 4. There is no longer a time difference between the evacuation of food particles attached to the ceiling 46 of the tank 2 and that on the dishes and the other walls of the tank 2, which no longer requires a large number of rinses to remove the last food particles in the appliance to obtain dishes washed and rinsed free of traces of food particles.

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  • Washing And Drying Of Tableware (AREA)

Abstract

Dishwasher provided in its tank with a lower spraying rotor (5) an upper spraying rotor (6) associated with the lower (3) and upper (4) dish baskets, characterised in that it comprises in addition to the lower (5) and upper (6) spraying rotors a rotor (49) for intentional cleaning of the entire surface of the ceiling (46) of the tank (2). <IMAGE>

Description

La présente invention concerne un lave-vaisselle à fonctionnement amélioré.The present invention relates to a dishwasher with improved operation.

Dans un lave-vaisselle, au cours du lavage ou rinçage, des particules alimentaires en suspension dans le liquide de lavage ou rinçage sont projetées par des moulinets d'arrosage en même temps que des jets de liquide de lavage ou rinçage sur la vaisselle, les paniers à vaisselle, le plafond et les parois latérales de la cuve.In a dishwasher, during washing or rinsing, food particles suspended in the washing or rinsing liquid are sprayed by watering reels at the same time as jets of washing or rinsing liquid on the dishes, dish baskets, ceiling and side walls of the tank.

Certains lave-vaisselle connus comprennent au niveau du plafond de leur cuve un moulinet "plafond" d'arrossage. Ce moulinet "plafond" d'arrosage est habituellement destiné soit à un lavage principal de la vaisselle dans leur panier supérieur, soit à un arrosage complémentaire de cette vaisselle dont le lavage principal est assuré par un moulinet supérieur d'arrosage disposé en dessous de leur panier supérieur à vaisselle. Les jets de liquide envoyés par ce moulinet "plafond" sont essentiellement dirigés latéralement et vers le bas sur la vaisselle qui se trouve en dessous. Certains de ces jets atteignent les parois latérales de la cuve, mais ces jets ne sont pas orientés vers le plafond de cette cuve que aléatoirement ou partiellement. En outre, ce moulinet "plafond" d'arrosage est souvent encombrant.Some known dishwashers include at the ceiling of their tank a "ceiling" spray reel. This "ceiling" watering reel is usually intended either for a main washing of the dishes in their upper basket, or for additional watering of these dishes, the main washing of which is provided by an upper watering reel arranged below their upper basket for dishes. The liquid jets sent by this "ceiling" reel are mainly directed laterally and downwards on the dishes below. Some of these jets reach the side walls of the tank, but these jets are not oriented towards the ceiling of this tank only randomly or partially. In addition, this reel "ceiling" of watering is often bulky.

Certains autres lave-vaisselle connus comprennent au niveau du plafond de leur cuve une buse "plafond" fixe d'alimentation en liquide d'un moulinet d'arrosage supporté par leur panier supérieur à vaisselle.Certain other known dishwashers include, at the level of the ceiling of their tank, a fixed "ceiling" nozzle for supplying liquid to a watering reel supported by their upper basket for dishes.

Cette buse "plafond" fixe peut comporter deux ou plusieurs sorties latérales qui émettent des jets fixes de liquide tombant en pluie sur la vaisselle en dessous dans le panier supérieur à vaisselle. Ces jets fixes de liquide de la buse "plafond" sont dirigés latéralement et vers le bas et effectuent un arrosage complémentaire de cette vaisselle dont le lavage principal est assuré par le moulinet d'arrosage supporté par le panier supérieur à vaisselle.This fixed "ceiling" nozzle may have two or more lateral outlets which emit fixed jets of liquid falling in rain on the dishes below in the upper basket for dishes. These fixed jets of liquid from the "ceiling" nozzle are directed laterally and downwards and perform additional watering of these dishes, the main washing of which is provided by the supported watering reel. by the upper dish basket.

Dans ces lave-vaisselle connus, à la fin de chacun de leurs programmes de lavage et/ou de rinçage, on aperçoit encore l'existence des particules alimentaires restées sur la surface de la vaisselle lavée et/ou rincée.In these known dishwashers, at the end of each of their washing and / or rinsing programs, we still see the existence of food particles remaining on the surface of the washed and / or rinsed dishes.

La présente invention visant à éviter ces inconvénients, permet de réaliser un lave - vaisselle ayant un excellent fonctionnement dans lequel le lavage et/ou le rinçage de la vaisselle sont fortement améliorés, et donnent une vaisselle lavée et/ou rincée de particules alimentaires.The present invention, aimed at avoiding these drawbacks, makes it possible to produce a dishwasher having an excellent functioning in which the washing and / or rinsing of the dishes is greatly improved, and gives a dish washed and / or rinsed with food particles.

Selon l'invention, un lave-vaisselle pourvu dans sa cuve d'un moulinet inférieur d'arrosage et d'un moulinet supérieur d'arrosage associés aux paniers inférieur et supérieur à vaisselle, est caractérisé en ce qu'il comprend en plus des moulinets inférieur et supérieur d'arrosage, un moulinet de nettoyage volontaire de toute la surface du plafond de la cuve.According to the invention, a dishwasher provided in its tank with a lower watering reel and an upper watering reel associated with the lower and upper basket for dishes, is characterized in that it comprises in addition to lower and upper sprinkler reels, a reel for voluntary cleaning of the entire surface of the tank ceiling.

Pour mieux faire comprendre l'invention, on décrit ci-après un exemple de réalisation illustré par des dessins ci-annexés dont :

  • la figure 1 représente une vue schématique et partielle d'un lave-vaisselle muni d'un moulinet de nettoyage du plafond de cuve ;
  • la figure 2 représente à une autre échelle une vue schématique en coupe du moulinet de nettoyage du plafond de cuve de la cuve 1, et
  • la figure 3 représente une vue schématique en coupe d'une pièce mixte servant à la fois de buse d'alimentation en liquide et d'axe de rotation du moulinet de nettoyage du plafond de cuve.
To better understand the invention, an embodiment is illustrated below, illustrated by the attached drawings, in which:
  • Figure 1 shows a schematic and partial view of a dishwasher provided with a reel for cleaning the tank ceiling;
  • FIG. 2 shows on another scale a schematic sectional view of the reel for cleaning the tank ceiling of tank 1, and
  • 3 shows a schematic sectional view of a mixed part serving both as a liquid supply nozzle and as the axis of rotation of the reel for cleaning the tank ceiling.

Un lave-vaisselle 1 représenté schématiquement par des traits discontinus comprend une cuve 2, un panier à vaisselle inférieur 3, un panier à vaisselle supérieure 4, des moulinets d'arrosage inférieur 5 et supérieur 6 et un puisard 8 dans le fond de la cuve 2.A dishwasher 1 represented diagrammatically by broken lines comprises a tank 2, a lower dish basket 3, an upper dish basket 4, lower 5 and upper 6 reels and a sump 8 in the bottom of the tank 2.

Le puisard 8 est en communication, d'une part à travers une canalisation d'admission 9 avec une pompe de recyclage de liquide 10 qui aspire du liquide dans ce puisard et le refoule à travers des canalisations 12 et 13 dans les moulinets d'arrosage inférieur 5 et supérieur 6, et d'autre part à travers une entrée 14, avec une pompe de vidange 18 qui recueille du liquide dans la partie la plus basse de ce puisard 8 et le refoule vers l'extérieur à travers un tuyau de vidange 19.Sump 8 is in communication, on the one hand to through an inlet pipe 9 with a liquid recycling pump 10 which sucks liquid into this sump and discharges it through pipes 12 and 13 into the lower 5 and upper 6 reels, and on the other hand to through an inlet 14, with a drain pump 18 which collects liquid in the lowest part of this sump 8 and discharges it outwards through a drain pipe 19.

Le puisard 8 est recouvert par un filtre moyen 20 et un filtre gros 22. Le filtre moyen 20 sépare la pompe de recyclage 10, de la cuve 2 et de l'entrée 14 de .la pompe de vidange 18, et met la cuve 2 en communication avec l'entrée 14 de la pompe de vidange 18 par son ouverture tubulaire 21 dans laquelle est monté le filtre gros 22.The sump 8 is covered by a medium filter 20 and a coarse filter 22. The medium filter 20 separates the recycling pump 10, from the tank 2 and from the inlet 14 of the drain pump 18, and puts the tank 2 in communication with the inlet 14 of the drain pump 18 through its tubular opening 21 in which the coarse filter 22 is mounted.

Un microfiltre 40 est monté dans la cuve 2 et assure un filtrage des petites particules ou microparticules alimentaires véhiculées par un courant de liquide envoyé par la pompe de recyclage 10 à travers une canalisation de dérivation 27, et une buse 42 disposée dans l'entrée 14 de la pompe de vidange 18. Ce courant de liquide ne représente qu'une fraction du liquide refoulé par la pompe de recyclage 10. Le microfiltre 40 laisse passer dans la cuve 2 du liquide filtré et retient des microparticules alimentaires.A microfilter 40 is mounted in the tank 2 and filters the small food particles or microparticles carried by a stream of liquid sent by the recycling pump 10 through a bypass pipe 27, and a nozzle 42 disposed in the inlet 14 from the drain pump 18. This liquid stream represents only a fraction of the liquid discharged by the recycling pump 10. The microfilter 40 allows filtered liquid to pass into the tank 2 and retains food microparticles.

Un clapet anti-retour 16 sépare l'ouverture d'admission de la pompe de vidange 18 et l'entrée 14. Le clapet anti-retour 16 est ouvert uniquement dans la direction de la pompe de vidange 18 et fermé dans la dirertion opposée.A non-return valve 16 separates the intake opening of the drain pump 18 and the inlet 14. The non-return valve 16 is open only in the direction of the drain pump 18 and closed in the opposite direction.

Durant le fonctionnement du lave-vaisselle 1 en lavage ou en rinçage, le filtre moyen 20, le filtre gros 22 et le microfiltre 40 retiennent au fur et à mesure les particules alimentaires se trouvant dans le liquide de lavage ou de rinçage. Lors d'un fonctionnement de la pompe de vidange 18 des courants de liquide se forment, passent de la cuve 2 à travers le filtre moyen 20, le filtre gros 22 et le microfiltre 40, dans l'entrée 14 de cette pompe de vidange 18 entraînent alors des particules alimentaires retenues par le filtre moyen 20 et le microfiltre 40 et les évacuent vers l'extérieur à travers le tuyau de vidange 19. Les grosses particules alimentaires retenues par le filtre gros 22 sont enlevées manuellement lors d'un nettoyage de ce filtre 22.During the operation of the dishwasher 1 in washing or rinsing, the medium filter 20, the coarse filter 22 and the microfilter 40 gradually retain the food particles present in the washing or rinsing liquid. During operation of the drain pump 18, liquid streams form, pass from the tank 2 through the medium filter 20, the coarse filter 22 and the microfilter 40, into the inlet 14 of this drain pump 18 then entrain food particles retained by the medium filter 20 and the microfilter 40 and discharge them outwards through the drain pipe 19. The large food particles retained by the coarse filter 22 are removed manually during cleaning of this filter 22.

Pendant le cycle de lavage et de rinçage, des particules alimentaires en suspension dans le liquide de lavage et de rinçage sont projetées en même temps que des jets de liquide par les moulinets d'arrosage inférieur 5 et supérieur 6, sur tout ce qui se trouve à l'intérieur de la cuve 2, autrement dit sur les paniers à vaisselle inférieur 3 et supérieur 4, la vaisselle contenue dans ces paniers, les parois latérales 45 et le plafond 46 de la cuve 2.During the washing and rinsing cycle, food particles suspended in the washing and rinsing liquid are sprayed at the same time as liquid jets by the lower 5 and upper 6 water reels, on all that is inside the tank 2, in other words on the lower 3 and upper 4 dish baskets, the dishes contained in these baskets, the side walls 45 and the ceiling 46 of the tank 2.

Il est surprenant de découvrir clans des lave-vaisselle connus une relation entre le fait que malgré en nombre relativement grand de rinçages, on trouve encore dans les derniers rinçages des microparticules sur leur microfiltre, bien que ce microfiltre soit automatiquement nettoyé lors d'une vidange après chaque rinçage, et on découvre à la fin de leur programme de fonctionnement encore des traces de particules alimentaires restant sur la vaisselle lavée et rincée, et le fait que le plafond de la cuve n'est pas volontairement nettoyé d'une manière continue dans son étendue par des jets de liquide. Il est probable que dans les lave-vaisselle connus, des jets de liquide envoyés par leurs moulinets d'arrosage atteignent d'une façon aléatoire le plafond de leur cuve et des particules alimentaires projetées sur ce plafond sont délogées bien moins rapidement que celles se trouvant sur la vaisselle dans leurs paniers et sur les autres parois de la cuve. Autrement dit, le temps moyen de séjour des particules alimentaires sur le plafond de leur cuve est supérieur à celui des particules alimentaires sur la vaisselle, ce qui exige un nombre relativement grand de rinçages dans ces lave-vaisselle connus sans que la vaisselle lavée et rincée dans ces appareils soit dépourvue de traces de particules alimentaires sur sa surface.It is surprising to discover in known dishwasher clans a relationship between the fact that despite a relatively large number of rinses, microparticles are still found on their microfilters in the last rinses, although this microfilter is automatically cleaned during an emptying after each rinse, and we discover at the end of their operating program still traces of food particles remaining on the dishes washed and rinsed, and the fact that the ceiling of the tank is not intentionally cleaned continuously its extent by jets of liquid. It is likely that in known dishwashers, jets of liquid sent by their watering reels reach randomly the ceiling of their tank and food particles projected on this ceiling are dislodged much less quickly than those found on the dishes in their baskets and on the other walls of the tank. In other words, the average residence time of food particles on the ceiling of their tank is greater than that of food particles on dishes, which requires a relatively large number of rinses in these known dishwashers without the dishes being washed and rinsed in these devices is free of traces of food particles on its surface.

Selon l'invention, pour avoir rapidement débarrasé de particules alimentaires, un lave-vaisselle comprend en plus des moulinets inférieur et supérieur d'arrosage associés aux paniers inférieur et supérieur à vaisselle, un moulinet de nettoyage volontaire de toute la surface du plafond de la cuve.According to the invention, for having quickly got rid of food particles, a dishwasher comprises in addition to the upper and lower reels associated with the lower and upper baskets for dishes, a reel for voluntary cleaning of the entire surface of the ceiling of the tank.

Ce moulinet de nettoyage du plafond de la cuve assure une double fonction, une fonction principale de balayage de la surface de ce plafond par des jets de liquide et une fonction subsidiaire d'arrosage de la vaisselle dans les paniers supérieur et inférieur à vaisselle par une pluie de liquide provenant de ces jets de liquide renvoyés par ce plafond. Il en résulte que le plafond de la cuve de ce lave-vaisselle est débarrassé des particules alimentaires, que le lavage et/ou le rinçage de la vaisselle sont nettement améliorés par un arrosage complémentaire de cette vaisselle opéré par le moulinet de nettoyage volontaire du plafond de la cuve, que les microparticules ne sont plus retrouvées de façon moindre dans le microfiltre, dans les derniers rinçages, qu'une épuration optimale de chacun des bains de lavage et de rinçage est réalsisée, et que le nombre de bains dans un programme de fonctionnement peut être réduit tout en obtenant une vaisselle lavée et rinçée dépourvue de trace de particules alimentaires.This reel for cleaning the tank ceiling performs a double function, a main function of sweeping the surface of this ceiling by means of liquid jets and a subsidiary function of watering the dishes in the upper and lower basket for dishes. rain of liquid coming from these jets of liquid returned by this ceiling. It follows that the ceiling of the tank of this dishwasher is free of food particles, that the washing and / or rinsing of the dishes are significantly improved by additional watering of these dishes operated by the voluntary cleaning reel of the ceiling of the tank, that the microparticles are no longer found in a lesser way in the microfilter, in the last rinses, that an optimal purification of each of the washing and rinsing baths is carried out, and that the number of baths in a program of operation can be reduced while obtaining washed and rinsed dishes free of traces of food particles.

Pour cet effet, selon l'exemple de réalisation illustré, le lave-vaisselle 1 comprend dans la proximité du plafond 46 de la cuve 2, un moulinet 49 de nettoyage du plafond de cuve et une pièce mixte 50 servant à la fois de buse 51 d'alimentation en liquide du moulinet supérieur d'arrosage 6, d'axe 53 de rotation à ce moulinet 49 de nettoyage du plafond de cuve et de distributeur d'eau pour ce même moulinet.For this purpose, according to the illustrated embodiment, the dishwasher 1 comprises, in the vicinity of the ceiling 46 of the tank 2, a reel 49 for cleaning the tank ceiling and a mixed part 50 serving both as a nozzle 51 supply of liquid to the upper sprinkler reel 6, axis 53 of rotation to this reel 49 for cleaning the tank ceiling and water distributor for this same reel.

Le moulinet 49 de nettoyage du plafond de cuve est constitué par une boite circulaire, polygonale ou allongée 54 munie d'une part d'un moyeu tubulaire 55 coupé transversalement en deux par une fente transversale circulaire 56 (figure 2) ou une rangée transversale circulaire d'ouvertures (non représentée) servant de voie d'entrée de liquide et d'autre part d'un ou plusieurs orifices ou ajutages 57 orientés vers le plafond 46 de la cuve 2 et donnant à leur sortie un ou plusieurs jets de liquide balayant durant la rotation de ce moulinet 49 toute l'étendue de la surface de ce plafond 46.The reel 49 for cleaning the tank ceiling consists of a circular, polygonal or elongated box 54 provided on the one hand with a tubular hub 55 cut transversely in two by a circular transverse slot 56 (FIG. 2) or a circular transverse row openings (not shown) serving as a liquid inlet channel and on the other hand one or more orifices or nozzles 57 oriented towards the ceiling 46 of tank 2 and giving at their outlet one or more jets of liquid sweeping during the rotation of this reel 49 the entire extent of the surface of this ceiling 46.

La pièce mixte 50 comprend un corps tubulaire qui, servant d'axe 53 de rotation ou moulinet 49 de nettoyage du plafond de cuve, comporte à une des extrémités, une buse axiale 51 d'alimentation en liquide du moulinet supérieur d'arrosage 6 et une collerette radiale 59. Cette collerette 59 sert à la fois de butée d'appui au moulinet 49 de nettoyage du plafond de cuve et de prise pour le montage de la pièce mixte 50 sur l'extrémité de la canalisation 13 reliée à la pompe de recyclage de liquide 10. Le corps tubulaire de la pièce mixte 50 servant d'axe de rotation 53 du moulinet 49 de nettoyage du plafond de cuve comprend dans sa paroi d'une part au moins une ouverture radiale 62 d'alimentation en liquide du moulinet 49 de nettoyage du plafond de cuve et d'autre part sur les deux côtés de cette ou ces ouvertures radiales 62 deux rainures transversales circulaires 64, 65 ouvertes vers l'extérieur de ce corps tubulaire et destinées à assurer un bon guidage et une étanchéité satisfaisante.The mixed part 50 comprises a tubular body which, serving as an axis 53 of rotation or reel 49 for cleaning the tank ceiling, comprises at one end, an axial nozzle 51 for supplying liquid to the upper sprinkler reel 6 and a radial flange 59. This flange 59 serves both as a support stop for the reel 49 for cleaning the tank ceiling and as a socket for mounting the mixed part 50 on the end of the pipe 13 connected to the pump. liquid recycling 10. The tubular body of the mixed part 50 serving as an axis of rotation 53 of the reel 49 for cleaning the tank ceiling comprises in its wall on the one hand at least one radial opening 62 for supplying liquid to the reel 49 for cleaning the tank ceiling and on the other hand on both sides of this or these radial openings 62 two circular transverse grooves 64, 65 open towards the outside of this tubular body and intended to ensure good guidance and sealing satisfactory.

Quand le moulinet 49 de nettoyage du plafond de cuve est monté autour de l'axe de rotation 53 fixé à l'extrémité de la canalisation 13, les ouvertures radiales 62 de cet axe de rotation 53 se trouvent face à la fente transversale 56 du moyeu 55 de ce moulinet 49.When the reel 49 for cleaning the tank ceiling is mounted around the axis of rotation 53 fixed to the end of the pipe 13, the radial openings 62 of this axis of rotation 53 are facing the transverse slot 56 of the hub 55 of this reel 49.

Lors d'un fonctionnement du lave-vaisselle 1, la pompe de recyclage 10 aspire du liquide dans le puisard 8 et le refoule à travers les canalisations 12, 13, 27. Le courant de liquide refoulé à travers la canalisation 13 se divise en deux parties au niveau de la pièce mixte 50, une partie traversant la buse 51 franchissant un espace à l'air 70 et entrant par une conduite 71 dans le moulinet supérieur d'arrosage 6 et une partie traversant les ouvertures radiales 62, la fente transversale 56 entrant dans le moulinet 49 de nettoyage du plafond de cuve et sortant des orifices ou ajutages 57 sous forme de jets de liquide 75 qui balayent la surface du plafond 46 et entraînent des particules alimentaires qui s'y déposent avant d'être renvoyés par ce plafond 46 et de tomber en pluie sur la vaisselle dans les paniers supérieur 4 et inférieur 3 à vaisselle.During operation of the dishwasher 1, the recycling pump 10 sucks liquid into the sump 8 and discharges it through the pipes 12, 13, 27. The stream of liquid discharged through the pipe 13 is divided into two parts at the level of the mixed part 50, a part passing through the nozzle 51 crossing a space in the air 70 and entering via a pipe 71 in the upper spray reel 6 and a part passing through the radial openings 62, the transverse slot 56 entering the reel 49 for cleaning the tank ceiling and leaving the orifices or nozzles 57 under form of liquid jets 75 which sweep the surface of the ceiling 46 and entrain food particles which deposit there before being returned by this ceiling 46 and falling in rain on the dishes in the upper 4 and lower 3 basket for dishes .

Le plafond 46 de la cuve 2 est ainsi volontairement nettoyé d'une manière continue et dans la totalité de sa surface par des jets de liquide 75 du moulinet 49 qui entraînent rapidement régulièrement et au fur et à mesure, des particules alimentaires qui s'y déposent.The ceiling 46 of the tank 2 is thus voluntarily cleaned continuously and throughout its entire surface by jets of liquid 75 from the reel 49 which quickly regularly and progressively entrain food particles which are there deposit.

Le temps moyen de séjour des particules alimentaires sur le plafond est alors équivalent au temps moyen de séjour des particules alimentaires sur la surface de la vaisselle dans les paniers 3 et 4. Il n'y a plus de décalage dans le temps, entre l'évacuation des particules alimentaires accrochées au plafond 46 de la cuve 2 et celle sur la vaisselle et les autres parois de la cuve 2, ce qui ne nécessite plus un grand nombre de rinçages pour éliminer les dernières particules alimentaires dans l'appareil pour obtenir une vaisselle lavée et rinçée dépourvue de trace de particules alimentaires.The average residence time of food particles on the ceiling is then equivalent to the average residence time of food particles on the surface of the dishes in baskets 3 and 4. There is no longer a time difference between the evacuation of food particles attached to the ceiling 46 of the tank 2 and that on the dishes and the other walls of the tank 2, which no longer requires a large number of rinses to remove the last food particles in the appliance to obtain dishes washed and rinsed free of traces of food particles.

Claims (6)

Lave-vaisselle pourvu dans sa cuve d'un moulinet inférieur d'arrosage (5) et d'un moulinet supérieur d'arrosage (6) associés aux paniers inférieur (3) et supérieur (4) à vaisselle, caractérisé en ce qu'il comprend en plus des moulinets inférieur (5) et supérieur (6) d'arrosage, un moulinet (49) de nettoyage volontaire de toute la surface du plafond (46) de la cuve (2).Dishwasher provided in its tank with a lower watering reel (5) and an upper watering reel (6) associated with the lower (3) and upper (4) dish baskets, characterized in that it further comprises lower (5) and upper reels (6) for sprinkling, a reel (49) for voluntary cleaning of the entire surface of the ceiling (46) of the tank (2). Lave-vaisselle selon la revendication 1, caractérisé en ce que le moulinet (49) de nettoyage du plafond de cuve assure une double fonction, une fonction principale de balayage de la surface de ce plafond (46) par des jets de liquide (75) et une fonction subsidiaire d'arrosage de la vaisselle dans les paniers inférieur (3) et supérieur (4) par une pluie de liquide provenant de ces jets de liquide (75) renvoyés par ce plafond (46).Dishwasher according to claim 1, characterized in that the reel (49) for cleaning the tank ceiling has a double function, a main function of sweeping the surface of this ceiling (46) by jets of liquid (75) and a subsidiary function of watering the dishes in the lower (3) and upper (4) baskets by a rain of liquid coming from these jets of liquid (75) returned by this ceiling (46). Lave-vaisselle selon l'une des revendications 1 et 2, caractérisé en ce que le moulinet (49) de nettoyage du plafond de cuve est constitué par une boite circulaire, polygonale ou allongée (54) munie d'une part d'un moyeu tubulaire (55) coupé transversalement en deux par une fente transversale circulaire (56) servant de voie 4'entrée de liquide et d'autre part d'un ou plusieurs orifices ou ajutages (57) orientés vers le plafond (46) de la cuve (2) et donnant à sa ou leur sortie un ou plusieurs jets de liquide balayant durant la rotation de ce moulinet (49) l'étendue de la surface de ce plafond (46).Dishwasher according to one of claims 1 and 2, characterized in that the reel (49) for cleaning the tank ceiling consists of a circular, polygonal or elongated box (54) provided on the one hand with a hub tubular (55) cut transversely in half by a circular transverse slot (56) serving as a 4 ′ liquid inlet channel and on the other hand with one or more orifices or nozzles (57) oriented towards the ceiling (46) of the tank (2) and giving at its or their outlet one or more jets of liquid sweeping during the rotation of this reel (49) the extent of the surface of this ceiling (46). Lave-vaisselle selon l'une des revendications 1 et 2, caractérisé en ce que le moulinet (49) de nettoyage du plafond de cuve est constitué par une boite circulaire polygonale ou allongée (54) munie 4'une part d'un moyeu tubulaire (55) coupé transversalement en deux par une rangée transversale circulaire d'ouvertures servant de voie d'entrée de liquide, et d'autre part d'un ou plusieurs orifices ou ajutages (57) orientés vers le plafond (46) de la cuve (2) et donnant à sa ou leur sortie un ou plusieurs jets de liquide balayant durant la rotation de ce moulinet (49) l'étendue de la surface de ce plafond (46).Dishwasher according to one of claims 1 and 2, characterized in that the reel (49) for cleaning the tank ceiling consists of a polygonal or elongated circular box (54) provided 4 ’on the one hand with a tubular hub (55) cut transversely in half by a circular transverse row of openings serving as a liquid inlet channel, and on the other hand of one or more orifices or nozzles (57) oriented towards the ceiling (46) of the tank (2) and giving at its or their outlet one or more jets of liquid sweeping during the rotation of this reel (49) the extent of the surface of this ceiling (46 ). Lave-vaisselle selon l'une des revendications 1 à 4, caractérisé en ce qu'il comprend une pièce mixte (50) servant à la fois de buse (51) d'alimentation en liquide du moulinet supérieur d'arrosage (6), d'axe (53) de rotation au moulinet (49) de nettoyage du plafond de cuve et. de distributeur d'eau pour ce même moulinet.Dishwasher according to one of claims 1 to 4, characterized in that it comprises a mixed part (50) serving at the same time as a nozzle (51) for supplying liquid to the upper watering reel (6), axis (53) of rotation to the reel (49) for cleaning the tank ceiling and. water dispenser for the same reel. Lave-vaisselle selon la revendication 5, caractérisé en ce que la pièce mixte (50) comprend un corps tubulaire qui servant d'axe (53) de rotation au moulinet (49) de nettoyage du plafond de cuve comporte d'une part dans sa paroi au moins une ouverture radiale (62) d'alimentation en liquide du moulinet (49) de nettoyage du plafond de cuve et sur les deux côtés de cette ou ces ouvertures radiales (62) deux rainures transversales circulaires (64, 65) ouvertes vers l'extérieur de ce corps tubulaire et d'autre part à une des extrémités une buse axiale (51) d'alimentation en liquide du moulinet supérieur d'arrosage (6) et une collerette radiale (59) laquelle sert à la fois de butée d'appui à ce moulinet (49) de nettoyage du plafond de cuve et de prise pour le montage de cette pièce mixte (50).Dishwasher according to claim 5, characterized in that the mixed part (50) comprises a tubular body which serves as an axis (53) of rotation of the reel (49) for cleaning the tank ceiling comprises on the one hand in its wall with at least one radial opening (62) for supplying liquid to the reel (49) for cleaning the tank ceiling and on both sides of this or these radial openings (62) two circular transverse grooves (64, 65) open towards the outside of this tubular body and on the other hand at one end an axial nozzle (51) for supplying liquid to the upper sprinkler (6) and a radial flange (59) which serves both as a stop support for this reel (49) for cleaning the tank ceiling and socket for mounting this mixed part (50).
EP19920402063 1991-07-16 1992-07-16 Washing machine with improved functioning Expired - Lifetime EP0524102B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9108952 1991-07-16
FR9108952A FR2679121B1 (en) 1991-07-16 1991-07-16 IMPROVED DISHWASHER.

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EP0524102A1 true EP0524102A1 (en) 1993-01-20
EP0524102B1 EP0524102B1 (en) 1997-04-23

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DE (1) DE69219232T2 (en)
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FR2711503A1 (en) * 1993-10-23 1995-05-05 Gold Star Co Supplementary washing device for dishwasher
EP0766945A3 (en) * 1995-10-03 1998-07-01 SMEG S.p.A. Device for washing the ceiling of a dishwasher's tank
WO2002056744A2 (en) * 2001-01-19 2002-07-25 U S Chemical Corporation Automatic system and method for removing mineral deposits from a dishwasher
EP1277430A1 (en) * 2001-07-18 2003-01-22 Electrolux Home Products Corporation N.V. Dishwasher with variable washing liquid distribution
KR20040023109A (en) * 2002-09-10 2004-03-18 엘지전자 주식회사 Upper water spray device for dishwasher
WO2010112330A3 (en) * 2009-04-02 2011-03-17 BSH Bosch und Siemens Hausgeräte GmbH Dishwashing machine
US20140150827A1 (en) * 2012-11-30 2014-06-05 Steris Inc. Washer / disinfector having a water inlet diffuser
US9295368B2 (en) 2013-03-01 2016-03-29 Whirlpool Corporation Dishwasher with hydraulically driven sprayer
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US9532699B2 (en) 2013-07-15 2017-01-03 Whirlpool Corporation Dishwasher with sprayer
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US9693672B2 (en) 2011-09-22 2017-07-04 Whirlpool Corporation Dishwasher with sprayer
US9833120B2 (en) 2012-06-01 2017-12-05 Whirlpool Corporation Heating air for drying dishes in a dishwasher using an in-line wash liquid heater
US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US10058228B2 (en) 2012-02-27 2018-08-28 Whirlpool Corporation Soil chopping system for a dishwasher
US10076226B2 (en) 2012-05-30 2018-09-18 Whirlpool Corporation Rotating filter for a dishwasher
US10213085B2 (en) 2013-07-01 2019-02-26 Whirlpool Corporation Dishwasher for treating dishes
US10653291B2 (en) 2011-06-20 2020-05-19 Whirlpool Corporation Ultra micron filter for a dishwasher
US10779703B2 (en) 2009-12-21 2020-09-22 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US11882977B2 (en) 2011-05-16 2024-01-30 Whirlpool Corporation Dishwasher with filter assembly

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DE19948780A1 (en) * 1999-10-08 2001-04-12 Winterhalter Gastronom Gmbh dishwasher
DE102012202246B4 (en) * 2012-02-15 2024-02-08 BSH Hausgeräte GmbH Dishwasher with a spray device

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Cited By (35)

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Publication number Priority date Publication date Assignee Title
FR2711503A1 (en) * 1993-10-23 1995-05-05 Gold Star Co Supplementary washing device for dishwasher
EP0766945A3 (en) * 1995-10-03 1998-07-01 SMEG S.p.A. Device for washing the ceiling of a dishwasher's tank
WO2002056744A2 (en) * 2001-01-19 2002-07-25 U S Chemical Corporation Automatic system and method for removing mineral deposits from a dishwasher
WO2002056744A3 (en) * 2001-01-19 2002-10-10 Johnson S C Comm Markets Inc Automatic system and method for removing mineral deposits from a dishwasher
EP1277430A1 (en) * 2001-07-18 2003-01-22 Electrolux Home Products Corporation N.V. Dishwasher with variable washing liquid distribution
KR20040023109A (en) * 2002-09-10 2004-03-18 엘지전자 주식회사 Upper water spray device for dishwasher
WO2010112330A3 (en) * 2009-04-02 2011-03-17 BSH Bosch und Siemens Hausgeräte GmbH Dishwashing machine
US10779703B2 (en) 2009-12-21 2020-09-22 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US11882977B2 (en) 2011-05-16 2024-01-30 Whirlpool Corporation Dishwasher with filter assembly
US10314457B2 (en) 2011-06-20 2019-06-11 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US10178939B2 (en) 2011-06-20 2019-01-15 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US10653291B2 (en) 2011-06-20 2020-05-19 Whirlpool Corporation Ultra micron filter for a dishwasher
US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US10813525B2 (en) 2011-06-20 2020-10-27 Whirlpool Corporation Ultra micron filter for a dishwasher
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US10058228B2 (en) 2012-02-27 2018-08-28 Whirlpool Corporation Soil chopping system for a dishwasher
US10076226B2 (en) 2012-05-30 2018-09-18 Whirlpool Corporation Rotating filter for a dishwasher
US9833120B2 (en) 2012-06-01 2017-12-05 Whirlpool Corporation Heating air for drying dishes in a dishwasher using an in-line wash liquid heater
US20140150827A1 (en) * 2012-11-30 2014-06-05 Steris Inc. Washer / disinfector having a water inlet diffuser
US9440266B2 (en) * 2012-11-30 2016-09-13 Steris Inc. Washer / disinfector having a water inlet diffuser
EP2925461A4 (en) * 2012-11-30 2016-07-27 Steris Inc Washer / disinfector having a water inlet diffuser
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US10398283B2 (en) 2013-03-01 2019-09-03 Whirlpool Corporation Dishwasher with sprayer
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US9532699B2 (en) 2013-07-15 2017-01-03 Whirlpool Corporation Dishwasher with sprayer

Also Published As

Publication number Publication date
DE69219232T2 (en) 1997-08-07
FR2679121B1 (en) 1995-05-19
DE69219232D1 (en) 1997-05-28
FR2679121A1 (en) 1993-01-22
EP0524102B1 (en) 1997-04-23
ES2100316T3 (en) 1997-06-16

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