EP2165637A2 - Geschirrspülmaschine mit einem Filtergerät für das Geschirrreinigungswasser - Google Patents

Geschirrspülmaschine mit einem Filtergerät für das Geschirrreinigungswasser Download PDF

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Publication number
EP2165637A2
EP2165637A2 EP20090170483 EP09170483A EP2165637A2 EP 2165637 A2 EP2165637 A2 EP 2165637A2 EP 20090170483 EP20090170483 EP 20090170483 EP 09170483 A EP09170483 A EP 09170483A EP 2165637 A2 EP2165637 A2 EP 2165637A2
Authority
EP
European Patent Office
Prior art keywords
water
sump
dishwashing
inlet opening
filter
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.)
Granted
Application number
EP20090170483
Other languages
English (en)
French (fr)
Other versions
EP2165637B1 (de
EP2165637A3 (de
Inventor
Daniel Serve
Hervé Lavignac
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.)
Groupe Brandt SAS
Original Assignee
FagorBrandt SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FagorBrandt SAS filed Critical FagorBrandt SAS
Publication of EP2165637A2 publication Critical patent/EP2165637A2/de
Publication of EP2165637A3 publication Critical patent/EP2165637A3/de
Application granted granted Critical
Publication of EP2165637B1 publication Critical patent/EP2165637B1/de
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Anticipated expiration legal-status Critical

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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
    • A47L15/4202—Water filter means or strainers
    • A47L15/4206—Tubular filters

Definitions

  • the present invention relates to a dishwashing machine provided with a filtration device housed in a sump of the washing tub.
  • the invention relates to dishwashing machines, particularly domestic dishwashing machines.
  • the sump is covered upwards by a fine funnel-shaped sieve with a wide opening angle.
  • This fine sieve is followed, in its central zone, by a portion of thin sieve in the form of a sleeve which extends up to the suction pipe of the drain pump.
  • Said portion of fine sieve is surrounded, on its periphery, another tubular sieve established in fine sieve.
  • This fine-meshed tubular sieve extends, at a distance from the sleeve-shaped fine sieve portion, from the funnel-shaped fine sieve to the bottom of the sump surrounding the suction pipe of the drain pump.
  • the dishwashing water is sprayed onto the dishes by spray reels and then returned to a circulation pump.
  • This dishwashing water first meets the fine funnel-shaped sieve with a large opening angle and then passes in a privileged manner through it. Only part of the dishwashing water reaches the fine sieve to be microfiltered.
  • These dishwashers having a sieve device have a suction area for the dishwashing water by the circulation pump located at the periphery of the sump and outside of said sieve device, and in particular the very fine sieve.
  • the present invention aims to solve the aforementioned drawbacks and to provide a dishwashing machine to improve the microfiltration rate including reduced watering regime dishes.
  • the present invention is directed to a dishwashing machine comprising a washing tub, a dishwashing water filtration device, said washing tub comprising a bottom wall, side walls, an upper wall and a bottom wall, said bottom wall including a sump, said sump comprising an inlet opening to a water circulation device and an inlet opening to a drain device, said inlet opening to a circulation device of water and said inlet opening to a drain device being located in a lower part of said sump, said filtering device being housed at least partially inside said sump, said filtering device comprising a waste trap, a intermediate filter and a micro filter.
  • said inlet opening to a water circulation device is formed in the central portion of said micro filter, and said inlet opening to a drain device is formed outside said micro filter.
  • the dishwashing water filtration device comprises at least three levels of filtration made by the waste filter, the intermediate filter and the micro filter.
  • the suction area of the dishwashing water by the water circulation device is located in the center of the micro-filter.
  • the dishwashing water filtering device has a suction area of the dishwashing water by the water circulation device in the center of the micro-filter and a suction zone of said water of cleaning the dishes by the emptying device outside said micro filter.
  • a dishwashing machine comprising a device for filtering dishwashing water according to the invention makes it possible to guarantee, during the circulation of the dishwashing water, that at least one flow of water of cleaning of the privileged tableware passes through the micro filter.
  • the preferred passage of the dishwashing water from the wash tub to the dishwashing water filtering device is that passing through the micro-filter.
  • the microfiltration of the dishwashing water is improved and adapted to be implemented regardless of the flow of cleaning water from the water circulation device.
  • said inlet opening to a water circulation device is formed in the central portion of said sump, and said inlet opening to a drain device is provided at the periphery of said sump.
  • the suction area of the dishwashing water by the water circulation device is located in the center of the sump so as to create a preferred passage of the dishwashing water from the bowl of the dish. washing to the water filtering device for cleaning the dishes through the micro filter.
  • the dishwashing water filtering device has a suction area of the dishwashing water by the water circulation device in the center of the sump and a suction area of said cleaning water. of the dishes by the emptying device at the periphery of said sump.
  • a dishwashing machine comprises a tank 1 whose front face is closed by a door (not shown).
  • the vessel 1 is surrounded by a housing (not shown) comprising an upper wall, side walls, a bottom wall and a bottom wall.
  • the tank 1 comprises at least one means for spraying water with a bath of washing and / or rinsing liquid on the dishes.
  • a water of a bath of washing and rinsing liquid is defined as water for cleaning the dishes and circulating in a hydraulic circuit 2 of a dishwashing machine.
  • the origin of the water of a bath of washing and / or rinsing liquid is a water coming from the supply network of the dishwashing machine.
  • the tank 1 comprises an upper wall, side walls, a bottom wall and a bottom wall 3.
  • the housing of the dishwashing machine is adapted to house the tank 1.
  • Said tank 1 is adapted in particular to contain the bath water of washing liquid and / or rinsing the phases of a cleaning cycle.
  • At least one dish rack (not shown) is mounted inside the tank 1.
  • a dish rack located in the upper part of the tank 1 is designated by upper rack and a dish rack located in the lower part of the tank 1 by lower basket.
  • the dish baskets can be pushed and removed by sliding them inside the tub 1 of the dishwashing machine either at the end of a cleaning cycle for unloading the dishes or at the beginning of the cycle of washing. cleaning for loading the dishes.
  • This dishwashing machine is provided with a pump (not shown) for the circulation of the bath water of washing liquid and / or rinsing in the tank 1.
  • Control means allow to run predetermined cleaning programs.
  • the tank door 1 makes it possible to close an opening made in the tank 1.
  • This tank door 1 can thus be movable between a closed position in which it closes the opening, in a sealed manner, and an open position.
  • the tank door 1 is pivotally mounted about an axis of rotation integral with the housing of the dishwasher.
  • This dishwashing machine comprises a door formed in particular of two parts.
  • the first part of the door corresponds to the external facade visible by the client.
  • the facade may also be a panel adapted to receive a piece of furniture of the kitchen.
  • the second part of the door is the counter door, that is to say the inner wall of the door closing the tank 1.
  • the dishwashing machine operates in such a way as to minimize the volume of the bath of washing and / or rinsing liquid retained in a sump 4 formed in the lower wall 3 of the tank 1 coming from the means spray.
  • the water circulation pump (not shown) draws water from the washing and / or rinsing liquid bath into the sump 4 to circulate said water of the washing and / or rinsing liquid bath under pressure. to the spraying means. Then, the bath of washing and / or rinsing liquid returns to the sump 4.
  • the water circulation pump is driven by an electric motor.
  • the open or closed state of a water supply solenoid valve of the washing tank 1 depends on the quantity of water retained in said washing tank 1. This quantity of water must be sufficient to ensure the good operation of the circulation pump of water without defusing.
  • the state, open or closed, of the solenoid valve depends on the quantity of water retained in the tank 1.
  • This dishwashing machine is provided with a pump (not shown) for emptying water from the bath of washing liquid and / or rinsing the tank 1 to a wastewater network connected to said washing machine. washing up.
  • the drain pump (not shown) draws water from the washing and / or rinsing liquid bath into the sump 4 to evacuate said water from the washing and / or rinsing liquid bath to a connected wastewater network. to the dishwasher.
  • the drain pump is driven by an electric motor.
  • a dishwashing water filtration device will now be described with reference to Figures 1 and 2 , a dishwashing machine according to the invention.
  • the dishwashing machine comprising a washing tub 1, a dishwashing water filtering device 5.
  • the washing tub 1 comprises a bottom wall, side walls, an upper wall and a bottom wall 3.
  • the bottom wall 3 comprises a sump 4.
  • the sump 4 comprises an inlet opening 6 to a water circulation device and an inlet opening 7 to a drain device.
  • the water circulation device comprises at least one water circulation pump, a water pipe from the sump 4 to said water circulation pump, and at least one water pipe from said circulation pump. water to one or more water spraying means arranged in the washing tub 1.
  • the emptying device comprises at least one drain pump, a water pipe from the sump 4 to said drain pump, and at least one water pipe from said drain pump to a pipe of a water network worn.
  • the inlet opening 6 to a water circulation device and the inlet opening 7 to a draining device are located in a lower part of the sump 4.
  • the filtration device 5 is housed at least partially inside the sump 4.
  • the filtration device 5 comprises a waste trap 8, an intermediate filter 9 and a microfilter 10.
  • the filtration device 5 can be dismountable, and in particular the waste trap 8.
  • the intermediate filter 9 has a fine mesh screen and the micro filter 10 has a fine mesh screen.
  • a peripheral wall 9a of the intermediate filter 9 and the micro filter 10 have a substantially cylindrical shape.
  • the micro filter 10 is housed inside the peripheral wall 9a of the intermediate filter 9.
  • the inlet opening 6 to a water circulation device is formed in the central part of the micro filter 10.
  • the dishwashing water filtration device 5 comprises at least three filtration levels made by the waste filter 8, the intermediate filter 9 and the micro-filter 10.
  • the suction area of the dishwashing water by the water circulation device is located in the center of the micro filter 10.
  • the dishwashing water filtration device 5 comprises, at the inlet, a collection zone 12 of at least one flow of water for cleaning the dishes. Said at least one stream of water is subjected to microfiltration by the passage of the latter through the micro filter 10.
  • Said collection zone 12 of at least one dishwashing water flow is located at the periphery of the dishwashing water filtration device 5.
  • the dishwashing water filtering device 5 has a suction area of the dishwashing water by the water circulation device at the center of the micro-filter 10 and a suction zone of said dishwashing water. water for cleaning the dishes by the emptying device on the outside of said micro filter 10.
  • a dishwashing machine comprising a dishwashing water filtering device 5 according to the invention makes it possible to guarantee, during the circulation of the dishwashing water, that at least one flow of water for cleaning the dishes preferred dishwashing water passes through the micro filter 10.
  • the preferred passage of the dish washing water from the washing tub 1 to the dishwashing water filtration device 5 is that passing through the micro-filter 10.
  • a reduced watering regime of the dishes is implemented by decreasing the flow of water for cleaning the crockery put into circulation by reducing the speed of operation of a water circulation pump so as to reduce the quantity of water from a washing bath and / or rinsing.
  • the dishwashing water flow rate can be reduced to about -40% of the nominal water flow value.
  • the microfiltration of the dishwashing water is improved and adapted to be implemented regardless of the flow of cleaning water from the water circulation device.
  • the dishwashing water is treated almost entirely by the microfilter 10 so as to prevent impurities microphones from passing through the water circulation pump and then being projected onto the parts of the dish. washing up.
  • the major portion of the dishwashing water flow through the micro filter 10 is represented by the full gray arrow and the minor portion of the dishwashing water flow not passing through the micro filter 10 is represented by the dashed arrow.
  • the minor portion of the dishwashing water flow not passing through the micro-filter 10 represented by the dashed arrow occurs when the microfilter 10 is clogged or when the water flow rate is too great. Then, the minor portion of the dishwashing water flow passes through the upper wall 9b of the intermediate filter 9.
  • the major part of the dishwashing water flow through the micro-filter 10 represented by the full gray arrow flows from the inside of the washing tub 1 to the at least one baffle 11 of the waste trap 8, then through the peripheral wall 9a of the intermediate filter 9, then through the micro filter 10 to be finally sucked by the water circulation pump via the opening of the input 6 to a water circulation device.
  • the emptying device During the evacuation of the dishwashing water by the emptying device, it can only be treated by the waste trap 8 and then be discharged through the inlet opening 7 to the emptying device.
  • the inlet opening 6 to a water circulation device is formed in the central portion of the sump 4.
  • the suction area of the dishwashing water by the water circulation device is located in the center of the sump 4 so as to create a preferred passage of the dishwashing water of the bowl washing 1 to the filtering device 5 for cleaning the dishwashing water through the micro filter 10.
  • the dishwashing water filtration device 5 has a suction area for the dishwashing water by the water circulation device at the center of the sump 4 and a suction zone of said water. cleaning the dishes by the emptying device at the periphery of said sump 4.
  • the micro filter 10 is placed inside and in the central part of the filtration device 5.
  • the intermediate filter 9 comprises a peripheral wall 9a and an upper wall 9b, said peripheral wall 9a being located around the micro filter 10, and said upper wall 9b being located at least in the center of the waste trap 8.
  • the intermediate filter 9 is located in the center of the filtration device 5 and not on the periphery of the waste trap 8, so that the dishwashing water preferably passes through the microfilter 10 instead of the intermediate filter. 9, especially in reduced watering regime.
  • the intermediate filter 9 comprises only an upper wall 9b, said upper wall 9b being located at least in the center of the waste trap 8.
  • the intermediate filter 9 thus does not comprise a peripheral wall 9a.
  • Such an embodiment of the invention makes it possible to guarantee the operation of the dishwashing water filtration device 5 without loss of efficiency.
  • the peripheral wall 9a of the intermediate filter 9 serves to protect the micro filter 10.
  • the removal of the peripheral wall 9a of the intermediate filter 9 can be carried out by appropriately sizing the size of the microfilter 10 so as to avoid crushing it.
  • the upper wall 9b of the intermediate filter 9 is of curved shape so as to promote the drainage of the waste towards an inlet opening 12 of the waste trap 8.
  • the upper wall 9b of the intermediate filter 9 is dimensioned on the surface and by the ratio of the perforations of said upper wall 9b on the total surface of the latter so as to leave a maximum cleaning water flow of the tableware in the case where the micro filter 10 can be clogged.
  • the waste trap 8 supports the upper wall 9b of the intermediate filter 9.
  • the waste trap 8 extends along a peripheral wall 4a of the sump 4 and outside the micro filter 10.
  • the waste trap 8 is of annular shape.
  • the waste trap 8 comprises at least one baffle 11 extending from outside the sump 4 towards the inside of said sump 4.
  • the annular waste trap disposed around the micro filter 10 comprises a water inlet opening 12 in which at least one baffle 11 is formed.
  • Said at least one baffle 11 of the waste trap 8 makes it possible to pass soft waste, such as, for example, corn kernels or noodles, and to stop solid waste, such as, for example, pieces of glass, cures. -dents or cores, which can cause the blockage of a drain pump.
  • the convex shape of the upper wall 9b of the intermediate filter 9 makes it possible to promote the efficiency of the at least one baffle 11 of the waste trap 8.
  • the waste trap 8 may be funnel-shaped, as illustrated in FIG. figure 2 .
  • the waste trap 8 supporting the upper wall 9b of the intermediate filter 9 and having a funnel shape makes it possible to increase the surface of said upper wall 9b of said intermediate filter 9.
  • the washing tub 1 comprises at least one means for spraying a water jet (not shown).
  • said at least one means for spraying a water jet sprays water towards said at least one baffle 11 of the waste trap 8.
  • said at least one means for spraying a water jet spraying water towards said at least one baffle 11 of the waste trap 8 makes it possible to promote the passage of soft waste through said at least one chicane 11.
  • the sump 4 comprises a bottom wall 4b having an inclination ⁇ at an angle towards the inlet opening 7 to a drain device.
  • the inclination of an angle ⁇ of the bottom wall 4b of the sump 4 in the direction of the inlet opening 7 to a drain device is preferably greater than 5 °.
  • a deflector element 13 is located above from the inlet opening 6 to a water circulation device.
  • the inlet opening 6 to a water circulation device is preferably located in the center of the sump 4.
  • the suction of the dishwashing water is privileged peripherally and through the micro filter 10 while avoiding the vortex phenomena in the sump 4.
  • the shape of the substantially cylindrical dishwashing water filtration device is in no way limiting and can be adapted to the shape of the sump and the stresses associated with the presence of a hub of a spraying means. a jet of water located in the lower part of the washing tub.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Sink And Installation For Waste Water (AREA)
EP09170483.3A 2008-09-16 2009-09-16 Geschirrspülmaschine mit einem Filtergerät für das Geschirrreinigungswasser Active EP2165637B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0805116A FR2935882B1 (fr) 2008-09-16 2008-09-16 Machine a laver la vaisselle comprenant un dispositif de filtration d'eau de nettoyage de la vaisselle.

Publications (3)

Publication Number Publication Date
EP2165637A2 true EP2165637A2 (de) 2010-03-24
EP2165637A3 EP2165637A3 (de) 2014-10-29
EP2165637B1 EP2165637B1 (de) 2016-02-10

Family

ID=40577857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09170483.3A Active EP2165637B1 (de) 2008-09-16 2009-09-16 Geschirrspülmaschine mit einem Filtergerät für das Geschirrreinigungswasser

Country Status (3)

Country Link
EP (1) EP2165637B1 (de)
ES (1) ES2570404T3 (de)
FR (1) FR2935882B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9596974B1 (en) 2015-09-22 2017-03-21 Haier Us Appliance Solutions, Inc. Fluid circulation system for dishwasher appliances

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111743486B (zh) * 2019-03-28 2024-02-02 博西华电器（江苏）有限公司 洗碗机

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503557A1 (fr) 1981-04-10 1982-10-15 Bosch Siemens Hausgeraete Dispositif de tamis a l'interieur de puisards de lave-vaisselle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2757616C3 (de) * 1977-12-23 1981-03-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Geschirrspülmaschine
DE3339281C1 (de) * 1983-10-28 1985-06-05 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Einrichtung in der Ablaufwanne einer Geschirrspülmaschine
SE457596B (sv) * 1986-01-31 1989-01-16 Electrolux Ab Anordning vid en diskmaskin
IT1318186B1 (it) * 2000-07-18 2003-07-23 Candy Spa Apparato di filtraggio per lavastoviglie
DE102005008987B3 (de) * 2005-02-28 2006-06-01 Meiko Maschinenbau Gmbh & Co.Kg Mehrtankgeschirrspülmaschine mit Rückspülvorrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503557A1 (fr) 1981-04-10 1982-10-15 Bosch Siemens Hausgeraete Dispositif de tamis a l'interieur de puisards de lave-vaisselle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9596974B1 (en) 2015-09-22 2017-03-21 Haier Us Appliance Solutions, Inc. Fluid circulation system for dishwasher appliances

Also Published As

Publication number Publication date
ES2570404T3 (es) 2016-05-18
FR2935882B1 (fr) 2010-09-03
EP2165637B1 (de) 2016-02-10
EP2165637A3 (de) 2014-10-29
FR2935882A1 (fr) 2010-03-19

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