EP0669099B1 - Dispositif de contrôle de niveau de liquide laveur dans un lave-vaisselle - Google Patents
Dispositif de contrôle de niveau de liquide laveur dans un lave-vaisselle Download PDFInfo
- Publication number
- EP0669099B1 EP0669099B1 EP95200393A EP95200393A EP0669099B1 EP 0669099 B1 EP0669099 B1 EP 0669099B1 EP 95200393 A EP95200393 A EP 95200393A EP 95200393 A EP95200393 A EP 95200393A EP 0669099 B1 EP0669099 B1 EP 0669099B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- level
- tank
- liquid
- dishwasher
- water
- 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
Links
- 238000005406 washing Methods 0.000 title claims description 39
- 239000007788 liquid Substances 0.000 title claims description 22
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 230000001960 triggered effect Effects 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 230000001172 regenerating effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 80
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000011049 filling Methods 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 238000000071 blow moulding Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- 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
- A47L15/4244—Water-level measuring or regulating arrangements
Definitions
- the present invention relates to a device for controlling the level of washing liquid in a dishwasher.
- Dishwashers comprise a washing drum on the base whereof the water used for washing dishes is collected, and wherefrom it is then pumped to appropriate rotor diffusers. Since the drum is relatively shallow, it is important to control the quantity of water loaded by the dishwasher for washing, both at the start of the cycle and for subsequent rinsing operations, to avoid overflows.
- the device for controlling the level of the water is represented by a solenoid valve placed at the inlet of the pipe for feeding the flow of water, controlled by an electric pressure switch.
- the switch detects, by means of a sensitive diaphragm, the air pressure in a compression chamber (pressure chamber) located at the top of a column of liquid connected to the washing drum of the dishwasher, a pressure which is proportional to the level of liquid in the drum.
- the electric contacts of the switch are made to commutate by the sensitive diaphragm, so as to cause the closure of the solenoid valve when the pressure of the air in the chamber reaches a certain value corresponding to the maximum water level required in the washing drum.
- Systems of this type can be defined as "direct control in drum".
- the pressure switch must be calibrated beforehand with high precision, above all since, the drum having a somewhat extensive surface, a few millimetres of variation in the level of the water in the drum correspond to several litres of water.
- a quantity of water greater than is required, in addition to making overflows from the drum more likely, means greater consumption of electricity required to heat it, in contrast with the current tendency of manufacturers to reduce consumption rates further. It is in fact known that the approximately 40 litres once required for a complete washing cycle have now dropped to 18-20 litres.
- a further problem which affects systems for direct control in the drum is represented by the fact that during washing the water incorporates dirt and fatty deposits, which may clog the pipe which leads to the compression chamber wherein the pressure switch is located. In these cases the pressure in the chamber is no longer proportional to the level of water in the drum, and the control system is less efficient, even leading to an overflow.
- a simple yet inaccurate system consists of controlling the time of opening of the feed solenoid valve by the programming device (timer). In this way however account is not taken of the possible variations in the flow rate and/or flow pressure of water fed to the solenoid valve.
- Italian patent application no. MI92A000597 in the name of the same Applicant, describes a control device substantially comprising a measuring tank branching off from the feed pipe which leads from the solenoid valve to the drum.
- the water flowing into the dishwasher is divided between the washing drum and the measuring tank.
- a pressure switch measures the level of water in the measuring tank (a level which is proportional to that in the drum and which is converted into air pressure inside the tank) and interrupts the inflow of water, closing the solenoid valve, when this level reaches the required value.
- the control device no longer works on the whole quantity of water fed to the drum, but on a small fraction thereof, and in a constantly clean environment.
- This device although more accurate than the previous one, is subject to errors caused by differences in water flow rate or pressure in the branch pipe which feeds the measuring tank in relation to the pipe which feeds the drum.
- European patent application no. 0351564 describes a control device which exploits the principle of filling the drum with water due to successive transfers from a smaller capacity recipient, for example equal to a third of the volume of water to be loaded into the drum.
- the feed solenoid valve is not controlled by a pressure switch but instead by a microswitch in turn controlled by a float and rocker arm assembly located in the smaller capacity recipient, and which may be subject to problems of mechanical seizure.
- Document DE-A-2716252 describes a device for controlling the level of the washing liquid in a dishwasher having the features of the preamble of claim 1.
- the object of the present invention is that of providing a device for controlling the level of washing liquid in a dishwasher which is not subject to the problems which characterise the control systems described.
- this object is achieved thanks to a device for controlling the level of washing liquid in a dishwasher, as defined in claim 1.
- the present invention it is possible to provide a device for controlling the level of liquid outside of the washing drum, which is therefore not accessible to the dirt produced during washing and therefore not subject to clogging. Due to the fact that the principle of transfer from a tank to a recipient with a much smaller capacity and connected with a pressure chamber is exploited, the system has a much higher trigger speed, allowing a highly accurate control. Using moreover as detectors standard pressure switches, widely available and economical, the device is not subject to problems of mechanical seizure.
- FIG. 1 in Figure 1 denotes a washing drum for dishwasher machines.
- This drum 1 is enclosed in a manner in itself known inside a framework 2 forming the external casing of the dishwasher.
- a feed solenoid valve 3 Mounted on said framework 2 is a feed solenoid valve 3 whereto a pipe 101 for feeding clean water is connected externally.
- a diffusion rotor 5 which is fed by an electric pump 6 placed below the drum 1, in a cavity 9 between the base 4 of the drum 1 and base 7 of the framework 2.
- the base 4 of the washing drum 1 converges towards a substantially square opening 8, below which, again in the cavity 9, is a collection basin or sump 10.
- the opening 8 is covered by a perforated plate 31 having filter functions, to prevent washing residue from penetrating the basin 10.
- a drain pipe 100 connected to the collection basin 10 is a drain pipe 100, connected to a drain pump (not shown).
- the control device essentially comprises a tank 11, a first transfer recipient 12 and a second transfer recipient 13, connected by siphon pipes 14, 15 and 16.
- the whole can also be usefully housed in a cavity 17 between a lateral wall 18 of the washing drum 1 and a lateral wall 19 of the framework 2 (Fig. 2).
- the tank 11, the two transfer recipients 12 and 13 and the siphon pipes 14, 15 and 16 are produced by the blow moulding technique and form a single part. This does not mean that the device according to the invention cannot be made in several separate parts, connected by pipes.
- the tank 11 has a capacity equal to a fraction of the volume of water (typically 5 litres) required by the dishwasher in a single load phase. It will later be assumed that the tank 11 has a capacity equal to half of this volume of water, i.e. 2.5 litres.
- the tank 11 is provided on the base with an inlet mouth 20 through which the tank 11 is fed with decalcified water from a decalcification assembly 21 which is to be described hereinbelow.
- the connection between the decalcification assembly 21 and the tank 11 is schematically indicated in Figure 1 by line 22.
- the siphon pipe 15 is also connected to the base of the tank 11, and leads into the first transfer recipient 12, positioned at a height from the base 7 of the framework 2 lower than the height of the tank 11.
- the siphon pipe 14, also leading into the first transfer recipient 13, is instead connected to the top of the tank 11. Also connected at the top of the tank 11 a breather pipe 200, whose upper opening is located at a greater height in relation to the elbow of the siphon pipe 16.
- the first transfer recipient 13 has a much smaller capacity than the tank 11 and is composed of two chambers 23 and 24 of different capacities and divided by a baffle 25 and connected only on the common base 26. Connected at the top of the chamber 24, with a smaller capacity and forming a pressure chamber, is a capillary tube 27, which leads at the other end to a pressure switch 28, which is connected to a programming device or timer (not shown) which regulates the working of the dishwasher.
- the siphon pipe 16 is connected, which leads into the second transfer recipient 13.
- the latter is shaped so as to form below a siphon 29 and leads, via a hose 30, to the collection basin 10.
- the end of the hose 30, connected to the second transfer recipient 13, is located at a greater height than the end connected to the basin 10 to avoid backflows of water from the basin into the transfer recipient 13.
- the hose 30 is bent to form a siphon too (Fig. 2).
- a pipe 32 connects the top of the second transfer recipient 13 to the top of the chamber 23 of the first transfer recipient 12 to ensure that inside thereof there is the same pressure.
- a pipe 33, formed between the bend of the siphon pipe 15, connects the top of the chamber 23 to the outside, via a hole 34. In this way the pressure in the chamber 23 and in the second transfer recipient 13 is always equal to atmospheric pressure.
- the second recipient 13 is also provided with a chamber 35 of small capacity and separated from a main chamber by means of a baffle 36 and forming a pressure chamber.
- a capillary tube 37 leads off and is connected at the opposite end to a pressure switch 38 for pneumatic locking of the solenoid valve 3. This connection is schematically indicated in Figure 1 by means of the dot and dash line 40.
- the clean water from the water supply system is sent, in observance of legislation, to a so-called "air jump" assembly, having the function of preventing the water present in the circuit of the dishwasher from being sucked into the piping of the water supply system should vacuums be created in the latter.
- This is substantially piping 41 comprising a vertical outward section 42, an upturned “U” outward section 43, an upturned “U” return section 44 and a vertical return section 45.
- a hole 46 is formed, below which a container 47 is located, with volume of approximately 350 cc and wherein the small quantity of water which falls from the hole 46 is collected for subsequent use by the decalcification unit 21 in the phase of so-called recycling of decalcifying residues.
- the decalcification unit 21 comprises a segment 48 containing decalcifying resins, and a segment 49 containing salts for regenerating the decalcifying resins.
- the water from the section 45 of the piping 41 passes through the resins (connection schematically indicated by line 102) and from here is sent decalcified, as mentioned previously, via a pipe represented by line 22 to the tank 11.
- the water which is collected in the container 47 is sent, by means of a pipe, represented in the figure by line 50, to the segment 49 containing the salts, to form a mixture of salty water used to regenerate the decalcifying resins.
- Figure 1 also shows in section a pipe 51 connected to the interior of the washing drum 1 for releasing the steam partially condensated on the walls 52 of the container 47 before leaving the dishwasher via a breather hole 53.
- the programming device (timer) will cause the opening of the solenoid valve 3.
- the water flows along the piping 41 of the "air jump" assembly, into the segment 48 of the decalcifier 21, and is sent, decalcified, into the tank 11.
- the latter is gradually filled, together with the rising section 103 of the siphon pipe 15, until the level of water inside said section 103 reaches the triggering level of the siphon 15, a level denoted in Figure 1 by L1.
- a further flowing of water into the tank 11 causes the triggering of the siphon 15, which quickly transfers water from the tank 11, drawing from the base thereof, into the first transfer recipient 12.
- the rate of flow of water entering the tank 11 is greater than the flow rate of the siphon 15, even after triggering of the latter, the quantity of water entering the tank 11 is greater than that transferred by the siphon 15 into the first transfer recipient 12.
- the siphon 14 is also triggered, which causes an increase in the flow rate which serves to transfer water to the first transfer recipient 12. In this way the control device is ensured a high response speed.
- the water is distributed in the two chambers 23 and 24.
- the increase in the level of the water causes a gradual increase in the pressure of the air, and when this pressure exceeds a predefined level (corresponding to a level of water L3) the pressure switch 28 is actuated to send to the programming device the command for closure of the solenoid valve 3.
- a predefined level corresponding to a level of water L3
- the pressure switch 28 is actuated to send to the programming device the command for closure of the solenoid valve 3.
- the siphon 16 remains triggered until the first pressure chamber 12 has been emptied: the two siphons 15 and 16 therefore remain triggered until the tank 11 has been completely emptied.
- the existence of the breather pipes 32 and 33 and the hole 34 allows, as mentioned previously, the same air pressure to be maintained inside the second transfer recipient 13 and the chamber 23 of the first transfer recipient 12. In this way the siphons 15 and 16 can effectively remain in a triggered condition until the tank 11 and the first transfer recipient 12 have been emptied.
- the siphon 29 having been triggered, the water is transferred into the collection basin 10 from the second transfer recipient 13, via the pipe 30.
- the siphon 15 When the tank 11 has been totally emptied, the siphon 15 is detriggered. The level of water in the first transfer recipient 12 starts to fall, under the transfer action of the siphon 16. When this level falls below a recovery level L6, the pressure switch 28 signals this condition to the programming device, and the programming device reopens the solenoid valve 3. The tank 11 begins to fill once again, and thus a new cycle, identical to the previous one, begins.
- the tank 11 is dimensioned so as to have a capacity equal to half of the quantity of water required for total loading of the dishwasher, at the end of the second cycle the level of water in the washing drum 1 of the dishwasher reaches the required level L5 (static level).
- L5 static level
- the pressure switch 28 indicates this condition to the programming device, which causes the advance to a subsequent phase of the washing cycle, maintaining the solenoid valve 3 closed.
- the pump 6 is switched on, the level of water in the tank 1 falls in relation to L5, dropping below the perforated plate 31. This allows, among other things, elimination of additional nozzles for cleaning the plate 31.
- This safety control is actuated through the chamber 35 of the second transfer recipient 13: when the level of water in the drum 1 exceeds a maximum safety level, which is translated into a level L7 in the pressure chamber 35, the pressure of air in the chamber 35 exceeds a predetermined value, and causes actuation of the lock pressure switch 38, which causes closure of the solenoid valve 3.
- the presence of this safety control allows, among other things, the user to deliberately adjust the programming device, altering the predefined sequence to perform additional loads of water. This takes place in complete safety, since on exceeding the predefined safety level the flow of water is automatically interrupted.
- regeneration provides for flowing of water from the collection recipient 47, with capacity of around 350 cm 2 , to the segment 49 of the decalcifier 21 to form a mixture of water and salts, and from the segment 49 to the segment 48 containing resins, which are thus regenerated.
- it is sufficient to perform a partial load of 2.5 litres of water, corresponding to filling the tank 11.
- the clean water entering the decalcifier in this way rinses the resins.
- the control device described is particularly insensitive to the changes in flow rate and/or pressure of the water supply system.
- Experimental tests have shown that, by using as a feed solenoid valve a standard solenoid valve calibrated to 6.5 l/min., a variation from 0.8 atm to 3.5 atm in the pressure of the incoming flow of water means a variation of 0.2 l in the quantity of water at complete load (that is to say a variation of between 4.9 l and 5.1 l), which represents an extremely satisfactory tolerance.
- Figure 3 shows a particularly convenient embodiment of an assembly of control devices according to the invention and of an "air jump" assembly.
- the control device remains substantially unchanged compared to the previous embodiment, but the "air jump" assembly is also inserted in the cavity 17 between the wall 18 of the washing drum 1 and the wall 19 of the framework 2 of the dishwasher.
- this solution is suitable for production as a single part, using the aforementioned technique of blow moulding. In this way the overall dimensions and the assembly times are reduced, factors which both affect production costs.
- a conduit 55 connected to the solenoid valve 3, develops within the cavity 17 and is connected to the decalcification assembly 21.
- the conduit 55 has at the top an opening 58, for performing the "air jump" function, which leads into a collection recipient 56 below, with a capacity of approximately 350 cm 3 , wherein the water flowing from the opening is collected, and which has similar functions to the container 47 of Figure 1. From here, the water flows through a conduit 57 and is conveyed to the segment 49 of the decalcification assembly 21 containing the regeneration salts.
- a condensation conduit 54 is also formed into which the conduit 51, leading to the washing drum 1, outflows, as does the breather pipe 32 which leads to the second transfer recipient 13.
- This condensation conduit is considerably effective, having a much more extensive condensation surface than that represented by the walls 52 of Figure 1.
- the condensation conduit 54 is also shaped so as to provide tilted attachments 201 which define, with the walls of the conduit 54 itself, micro containers of water coming from the condensation of the steam leaving the basin of the conduit 51, or from the overflowing of the connection recipient 56, or again from the opening 58. In this way efficiency during the drying phase is increased.
Landscapes
- Washing And Drying Of Tableware (AREA)
Claims (10)
- Dispositif de réglage du niveau de liquide de lavage d'un lave-vaisselle, comprenant un réservoir (11) de capacité égale à une fraction de la quantité de liquide à charger dans un tambour (1) de lavage du lave-vaisselle et transmise par une électrovanne d'alimentation (3), le dispositif comprenant un premier tube (15) à siphon ayant une embouchure à la base du réservoir (11) et se terminant dans un récipient de transfert (12) de capacité inférieure à celle du réservoir (11), qui est placé à une hauteur, par rapport au sol, inférieure à celle du réservoir (11), le premier siphon (15) se déclenchant automatiquement lorsque le réservoir (11) a été totalement rempli et restant déclenché jusqu'à ce que le réservoir (11) ait été totalement vidé, une chambre (24) de pression rejoignant le récipient de transfert (12) et à laquelle un dispositif détecteur de pression (27, 28) est associé et est commandé lorsque le niveau du liquide transféré dans le récipient (12) dépasse un premier niveau préréglé (L3) pour provoquer la fermeture de l'électrovanne d'alimentation (3), et un dispositif (16, 13, 30) de transfert d'un liquide du récipient de transport (12) au tambour de lavage (1), ce dispositif étant commandé lorsque le niveau du liquide transféré dans le récipient de transfert (12) dépasse un second niveau préréglé (L4) supérieur au premier niveau (L3), caractérisé en ce que le dispositif comporte en outre un second tube à siphon (14), ayant une embouchure placée à la partie supérieure du réservoir (11) et se terminant dans le récipient de transfert (12), et qui est déclenché automatiquement lorsque le réservoir (11) a été rempli et le débit de liquide du premier tube (15) à siphon est inférieur au débit de liquide transmis par l'électrovanne d'alimentation (3).
- Dispositif de commande selon la revendication 1, caractérisé en ce que ledit dispositif (16, 13, 30) comprend un troisième tube à siphon (16) ayant une embouchure à la base du récipient de transfert (12), qui se déclenche automatiquement lorsque le niveau de liquide dans le récipient de transfert (12) dépasse le second niveau prédéterminé (L4), aboutissant dans un récipient supplémentaire de transfert (13) positionné à une hauteur par rapport au sol inférieure à celle du récipient de transfert (12) et rejoignant le tambour de lavage (1).
- Dispositif de commande selon la revendication 2, caractérisé en ce que le récipient supplémentaire de transfert (13) est raccordé par un quatrième tube à siphon (29, 30) à une cuve collectrice (10) placée sous le tambour de lavage (1) et raccordée à celui-ci.
- Dispositif de commande selon la revendication 3, caractérisé en ce que la cuve collectrice (10) transmet un liquide à une pompe (6) qui alimente à son tour des diffuseurs (5) de liquide placés à l'intérieur du tambour de lavage (1).
- Dispositif de commande selon la revendication 3 ou 4, caractérisé en ce que la cuve collectrice (10) est raccordée à une pompe destinée à évacuer le liquide de lavage du lave-vaisselle.
- Dispositif de commande selon la revendication 3, caractérisé en ce que le récipient supplémentaire de transfert (13) est raccordé à une chambre supplémentaire respective de pression (35) à laquelle un dispositif détecteur de pression relative (37, 38) est associé afin qu'il provoque la fermeture de l'électrovanne d'alimentation (3) lorsque le niveau de liquide dans le tambour de lavage (1) dépasse un niveau prédéterminé de sécurité.
- Dispositif de commande selon la revendication 2, caractérisé en ce que des tubes de ventilation (32, 33) sont destinés à maintenir constamment la pression de l'air dans les récipients de transfert (12, 13) à la valeur de la pression atmosphérique.
- Lave-vaisselle comprenant un dispositif de commande selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est logé dans une cavité (17) placée entre une paroi latérale (18) du tambour de lavage (1) et une paroi latérale (19) d'un châssis extérieur (2) du lave-vaisselle.
- Lave-vaisselle selon la revendication 8, caractérisé en ce que la cavité contient aussi un ensemble (55, 58) d'évacuation d'air, un récipient (56) destiné à collecter le liquide pour la régénération de résine de décalcification d'un ensemble de décalcification (21), et un conduit de condensation (54) rejoignant l'intérieur du tambour de lavage (1) et l'extérieur du lave-vaisselle pour la condensation et la libération de la vapeur d'eau créée dans le tambour (1) en cours de lavage.
- Lave-vaisselle comprenant un dispositif de commande selon l'une quelconque des revendications précédentes, caractérisé en ce que le réservoir (11) a une capacité égale à la moitié du volume de liquide à charger dans le tambour du lave-vaisselle.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI940353 | 1994-02-28 | ||
ITMI940353A IT1273347B (it) | 1994-02-28 | 1994-02-28 | Dispositivo per il controllo del livello del liquido di lavaggio in una lavastoviglie |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0669099A2 EP0669099A2 (fr) | 1995-08-30 |
EP0669099A3 EP0669099A3 (fr) | 1998-10-14 |
EP0669099B1 true EP0669099B1 (fr) | 2001-07-04 |
Family
ID=11367998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95200393A Expired - Lifetime EP0669099B1 (fr) | 1994-02-28 | 1995-02-18 | Dispositif de contrôle de niveau de liquide laveur dans un lave-vaisselle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0669099B1 (fr) |
DE (1) | DE69521538T2 (fr) |
IT (1) | IT1273347B (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT233540Y1 (it) | 1994-07-04 | 2000-01-28 | Candy Spa | Dispositivo per il recupero e la conservazione del liquido di lavaggio in macchine lavastoviglie,lavabiancheria e simili |
IT1275551B (it) * | 1995-07-14 | 1997-08-07 | Prealpina Tecnoplastica | Un dispositivo per il controllo del livello d'acqua di carico di macchine lavastoviglie e simili |
IT237085Y1 (it) * | 1995-07-27 | 2000-08-31 | Candy Spa | Dispositivo di controllo per il carico di volumi differenziati diliquido di lavaggio in una lavastoviglie |
DE102008022960A1 (de) * | 2008-05-09 | 2009-11-12 | Meiko Maschinenbau Gmbh & Co. Kg | Schmutzabscheider-Einrichtung mit Niveauregelung |
US8876980B2 (en) | 2010-06-30 | 2014-11-04 | Electrolux Home Products, Inc. | System and associated method for preventing overfilling in a dishwasher |
US8702874B2 (en) | 2011-02-08 | 2014-04-22 | Electrolux Home Products, Inc. | Method and system for removing a clog from a dishwasher |
CN110167412A (zh) | 2017-02-24 | 2019-08-23 | 伊莱克斯电器股份公司 | 用于处理堵塞状况的洗碗机、方法和控制系统 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2716252C2 (de) * | 1977-04-13 | 1983-04-07 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Geschirrspül- oder Waschmaschine mit einer Einrichtung zum Abgeben einer in einem Sammelbehälter abgemessenen Wassermenge |
DE3537789A1 (de) * | 1985-10-24 | 1987-04-30 | Licentia Gmbh | Verfahren und vorrichtung zum befuellen eines behaelters |
IT1257197B (it) * | 1992-05-26 | 1996-01-10 | Enzo Brignone | Apparecchiatura per la misurazione del quantitativo di acqua alimentata ad un apparecchio elettrodomestico. |
-
1994
- 1994-02-28 IT ITMI940353A patent/IT1273347B/it active IP Right Grant
-
1995
- 1995-02-18 DE DE69521538T patent/DE69521538T2/de not_active Expired - Fee Related
- 1995-02-18 EP EP95200393A patent/EP0669099B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0669099A2 (fr) | 1995-08-30 |
DE69521538T2 (de) | 2001-11-22 |
ITMI940353A1 (it) | 1995-09-01 |
EP0669099A3 (fr) | 1998-10-14 |
ITMI940353A0 (it) | 1994-02-28 |
DE69521538D1 (de) | 2001-08-09 |
IT1273347B (it) | 1997-07-08 |
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