EP1208790A2 - Geschirrspülmaschine mit einer Einrichtung zur Verhinderung einer Schaum- oder Luftblasenansammlung in der Messzone eines Trübungssensors - Google Patents
Geschirrspülmaschine mit einer Einrichtung zur Verhinderung einer Schaum- oder Luftblasenansammlung in der Messzone eines Trübungssensors Download PDFInfo
- Publication number
- EP1208790A2 EP1208790A2 EP01125828A EP01125828A EP1208790A2 EP 1208790 A2 EP1208790 A2 EP 1208790A2 EP 01125828 A EP01125828 A EP 01125828A EP 01125828 A EP01125828 A EP 01125828A EP 1208790 A2 EP1208790 A2 EP 1208790A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring zone
- turbidity sensor
- dishwasher according
- foam
- path
- 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
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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
- A47L15/4297—Arrangements for detecting or measuring the condition of the washing water, e.g. turbidity
Definitions
- Dishwasher with a device for preventing foam or air bubble accumulation in the measuring zone of a turbidity sensor
- the invention relates to a dishwasher with a device for preventing Foam or air bubbles accumulate in the flow-reduced measuring zone in the flushing water circuit arranged turbidity sensor.
- the invention has for its object a foam or air bubbles in the To prevent rinsing liquid in the area of the measuring zone of the turbidity sensor.
- the invention advantageously separates foam and / or air bubbles from the Turbidity liquid to be sensed in the area of the measuring zone of the optical sensor possible. This significantly simplifies the signal evaluation, whereby the measurement path of the optical sensor "floating" particles, each for a short moment the light of the Absorb optics, actually only recognized as signal jumps by dirt particles, filtered out and can be converted into usable signals.
- the digitized signal jumps can then through the computer's electronic device program control for program control of the dishwasher with regard to the respectively determined
- the type and amount of contamination can be precisely evaluated without being in the rinsing liquid transported foam or air bubbles can influence it.
- the invention is based on an electronically program-controlled dishwasher (1), whose manually or automatically selectable wash programs each have program sections, such as Have pre-rinse, clean, rinse and rinse, depending on what is found Degree of soiling of the dishes or dishwashing liquid loaded into the machine Pre-rinse and / or intermediate rinse cycles can be controlled or additionally controlled.
- program sections such as Have pre-rinse, clean, rinse and rinse, depending on what is found Degree of soiling of the dishes or dishwashing liquid loaded into the machine Pre-rinse and / or intermediate rinse cycles can be controlled or additionally controlled.
- To The final rinse program section is regularly followed by a program section Drying.
- Such dishwashers belong to the general state of the art and essentially have components and accessories, as shown in Fig. 1 in the Household appliance is shown in simplified form.
- the program control (P) of the device shown in the block diagram is for the sake of clarity been waived.
- the (1) designated and schematically shown front-loading household dishwasher has a rinsing tank (2) and several spray arms (3, 4, 5), which over and between crockery baskets (6, 7) and a separate cutlery basket (8) in different Wash levels are arranged in the wash tank (2).
- the spray arms (3, 4, 5) are assigned via Supply lines (11, 12) from the circulating rinsing liquid of an upstream circulation pump (9) fed, the rinsing liquid in the rinsing mode constantly via a filter screen combination (10) is guided out of a fine sieve arranged in the bottom of the washing compartment as well as a coarse sieve and a fine sieve. There are leftovers from the Filtered out rinsing liquid (17).
- the cutlery basket (8) is designed as a cutlery drawer and in a washing level separated from the crockery baskets (6, 7) above the two one above the other lying separate crockery baskets (6, 7) in the washing compartment (2) with their own spray arm (5) arranged.
- the supplied to the washing container (2) for dishwashing via a fresh water connection (15)
- the amount of washing liquid is largely dependent on the amount of dishes to be cleaned controlled dependent.
- flushing water quantities to be supplied in the flushing operation or change of liquid also depends on the soiling of the dishes.
- rinsing water contamination for example from not or only dirt particles that are difficult to dissolve, such as spinach residues or the like "swim", touch, negatively affect the washing result.
- the dishwasher (1) has an optical sensor in the form of a known turbidity sensor (13), which is connected to the program control (P) to predetermined Points in time in the aforementioned program sections, such as pre-rinsing, cleaning and / or Intermediate rinsing, for example after fresh water has been fed into the rinsing container (2) determines the turbidity of the moving rinsing liquid and the determined degree of contamination provides the corresponding measurement signal.
- a known turbidity sensor 13
- P program control
- the turbidity sensor (13) is advantageous in the feed line to form the calmed measuring section (12) to the upper spray arm (5).
- the calmed measuring zone (14) can also in the feed line to another spray arm (3 or 4) of the dishwasher (1) be installed.
- the measurement zone (14) may also be arranged in a bypass or in parallel Side path to a spray arm feed line (11 or 12), in which only a small part of the Flushing liquid (16) flows calmly, advantageously.
- the Cross-sectional enlargement in the flow direction of the rinsing liquid (16) calms the liquid flow.
- the measuring zone (14) combines a calm flow with one Foam or air bubble separator.
- the enlarged flow cross-section is compared to a horizontal plane (14a) of the measuring zone (14) increasingly increasing line course (line path 14b) for the Flushing liquid (16) formed.
- the air bubbles (17) collect in this line path (14b) thus above or outside the measuring range of the turbidity sensor (13). This ensures that the pure liquid transport in the plane (Eu) of the measuring zone and the air or Foam bubble transport takes place in the upper level (Eo) of the device (13, 14).
- the Turbidity sensor (13) can thus optimally detect the actual degree of contamination.
- the cross-sectional shape of the measuring zone (14) is preferably approximately trapezoidal, the turbidity sensor (13) in the area of the largest cross-sectional expansion in the lower one Level (Eu or floor area 14a) of the measuring zone (14) is arranged.
- the one described Measuring zone (14) can be easily manufactured and assembled as a separate plastic injection molded part.
- the calmed measuring zone (14) can, however, also in a horizontal conduit (12) Spray arm supply in the lower area of the device or in the water pipe (11; 12) or be arranged behind a speed-adjustable circulation pump (9).
- a speed controlled Circulation pump (9) advantageously causes a particularly calm at low speed Flow in front of the turbidity sensor (13).
- the device described here for a program-controlled dishwasher is equally applicable to a washing machine that can be controlled by a device program.
Landscapes
- Washing And Drying Of Tableware (AREA)
- Optical Measuring Cells (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
- Figur 1
- eine programmgesteuerte Geschirrspülmaschine im Querschnitt mit der vereinfachten Darstellung ihrer Bauelemente und ihrem Zubehör, wobei für die Feststellung des Verschmutzungsgrades der Spülflüssigkeit ein Trübungssensor im Wasserlauf des Gerätes vorgesehen ist,
- Figur 2
- eine Einrichtung zur Verhinderung einer Schaum- oder Luftblasenansammlung in der Messzone des Trübungssensors,
Claims (8)
- Geschirrspülmaschine mit einer Einrichtung zur Verhinderung einer Schaum- oder Luftblasenansammlung in der strömungsberuhigten Messzone eines im Spülwasserkreislauf angeordneten Trübungssensors,
dadurch gekennzeichnet, dass die Messzone (14) mit dem Trübungssensor (13) in einem waagerecht verlaufenden Leitungsweg der Spülflüssigkeit angeordnet ist und gegenüber der vorgeschalteten Zuleitung (12) einen sich stetig vergrößernden Strömungsquerschnitt besitzt. - Geschirrspülmaschine nach Anspruch 1,
dadurch gekennzeichnet, dass der vergrößerte Strömungsquerschnitt durch einen gegenüber einer horizontalen Ebene (Eu; 14a) der Messzone (14) zunehmend ansteigend verlaufenden Leitungsweg (14b) für die Spülflüssigkeit ausgebildet ist. - Geschirrspülmaschine nach den Ansprüchen 1 und 2,
dadurch gekennzeichnet, dass der Querschnittsverlauf im Strömungsweg der Spülflüssigkeit eine beruhigte Messzone (14) mit einem Luft- oder Schaumblasentransport in einer oberen Ebene (Eo) und einem davon getrennten Flüssigkeitstransport in einer darunter liegenden Ebene (Eu) bildet. - Geschirrspülmaschine nach mindestens einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass der Querschnittsverlauf der Messzone (14) annähernd trapezförmig ausgebildet ist. - Geschirrspülmaschine nach mindestens einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass der Trübungssensor (13) im Bereich der größten Querschnittserweiterung in der unteren Ebene (Eu) der Messzone (14) angeordnet ist. - Geschirrspülmaschine nach mindestens einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass die beruhigte Messzone (14) in einem parallelgeschalteten Nebenweg einer Spülwasserzuleitung (11 bzw. 12) angeordnet ist. - Geschirrspülmaschine nach mindestens einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass die beruhigte Messzone (14) in einem waagerechten Leitungsweg (12) der Sprüharmversorgung im unteren Gerätebereich angeordnet ist. - Geschirrspülmaschine nach mindestens einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass die beruhigte Messzone (14) im Wasserleitungsweg (11; 12) vor oder hinter einer drehzahlregelbaren Umwälzpumpe (9) ausgebildet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10059112A DE10059112C1 (de) | 2000-11-28 | 2000-11-28 | Geschirrspülmaschine mit einer Einrichtung zur Verhinderung einer Schaum- oder Luftblasenansammlung in der Messzone eines Trübungssensors |
| DE10059112 | 2000-11-28 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1208790A2 true EP1208790A2 (de) | 2002-05-29 |
| EP1208790A3 EP1208790A3 (de) | 2005-03-02 |
| EP1208790B1 EP1208790B1 (de) | 2006-10-25 |
Family
ID=7665013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01125828A Expired - Lifetime EP1208790B1 (de) | 2000-11-28 | 2001-10-30 | Geschirrspülmaschine mit einer Einrichtung zur Verhinderung einer Schaum- oder Luftblasenansammlung in der Messzone eines Trübungssensors |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7246625B2 (de) |
| EP (1) | EP1208790B1 (de) |
| AT (1) | ATE343344T1 (de) |
| DE (2) | DE10059112C1 (de) |
| ES (1) | ES2272395T3 (de) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1297780A3 (de) * | 2001-09-21 | 2006-04-12 | Miele & Cie. KG | Einrichtung mit einem Trübungssensor für eine Geschirrspülmaschine oder Waschmaschine |
| EP1472967A3 (de) * | 2003-04-29 | 2007-08-08 | Miele & Cie. KG | Einrichtung mit einem Trübungssensor für eine Geschirrspülmaschine oder Waschmaschine |
| US20090028700A1 (en) * | 2007-07-23 | 2009-01-29 | Clinton Coker | Appliance pump |
| DE102008020475A1 (de) | 2008-04-23 | 2009-11-05 | Miele & Cie. Kg | Verfahren zur Durchführung eines Spülprogramms mit Teilaustausch der im Spülbehälter befindlichen Spülflüssigkeit |
| EP2201885B2 (de) † | 2008-12-22 | 2020-07-08 | Whirlpool EMEA S.p.A | Geschirrspüler |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7032604B2 (en) * | 2002-05-28 | 2006-04-25 | Maytag Corporation | Three rack dishwasher |
| DE10248538A1 (de) * | 2002-10-17 | 2004-04-29 | Aweco Appliance Systems Gmbh & Co. Kg | Verfahren zur Wasserverschmutzungserkennung |
| DE102007052332A1 (de) | 2007-10-31 | 2009-05-07 | Miele & Cie. Kg | Geschirrspüler mit einem Trübungssensor |
| US9918609B2 (en) * | 2009-12-21 | 2018-03-20 | Whirlpool Corporation | Rotating drum filter for a dishwashing machine |
| DE102011053548A1 (de) | 2011-09-13 | 2013-03-14 | Miele & Cie. Kg | Verfahren zur Reinigung eines Spülflotten-Speicherbehälters |
| DE102011053545A1 (de) | 2011-09-13 | 2013-03-14 | Miele & Cie. Kg | Verfahren zum Betreiben eines Spülautomaten mit einem Spülflotten-Speicherbehälter |
| DE102012200614B4 (de) | 2011-09-20 | 2024-07-25 | Ecoclean Gmbh | Reinigungsanlage für Werkstücke mit Betriebszustands-Überwachung |
| WO2016205744A1 (en) * | 2015-06-17 | 2016-12-22 | Flodesign Sonics, Inc. | Turbidity sensor with improved flow path |
| US9661980B2 (en) * | 2015-10-09 | 2017-05-30 | Bsh Home Appliances Corporation | Pre-soak option for dishwashers |
| US11259681B2 (en) | 2019-09-30 | 2022-03-01 | Midea Group Co., Ltd | Dishwasher with image-based diagnostics |
| US11484183B2 (en) | 2019-09-30 | 2022-11-01 | Midea Group Co., Ltd. | Dishwasher with image-based object sensing |
| US11399690B2 (en) | 2019-09-30 | 2022-08-02 | Midea Group Co., Ltd. | Dishwasher with cam-based position sensor |
| US11026559B2 (en) * | 2019-09-30 | 2021-06-08 | Midea Group Co., Ltd. | Dishwasher with image-based fluid condition sensing |
| US11464389B2 (en) | 2019-09-30 | 2022-10-11 | Midea Group Co., Ltd. | Dishwasher with image-based detergent sensing |
| US11191416B2 (en) | 2019-09-30 | 2021-12-07 | Midea Group Co., Ltd. | Dishwasher with image-based position sensor |
| US11202550B2 (en) | 2019-11-20 | 2021-12-21 | Midea Group Co., Ltd. | Dishwasher thermal imaging system |
| US11185209B2 (en) | 2019-11-20 | 2021-11-30 | Midea Group Co., Ltd. | Dishwasher steam generator |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5140168A (en) * | 1990-12-03 | 1992-08-18 | Great Lakes Instruments, Inc. | Turbidimeter signal processing circuit using alternating light sources |
| JPH04215736A (ja) * | 1990-12-12 | 1992-08-06 | Mitsubishi Electric Corp | 食器洗浄機 |
| JP3067248B2 (ja) * | 1991-04-17 | 2000-07-17 | 石川島播磨重工業株式会社 | イオン源 |
| JPH04319329A (ja) * | 1991-04-19 | 1992-11-10 | Mitsubishi Electric Corp | 排水濁度検知装置 |
| JPH05269075A (ja) * | 1992-03-25 | 1993-10-19 | Toto Ltd | 食器洗浄機及びその運転方法 |
| US5331177A (en) * | 1993-04-26 | 1994-07-19 | Honeywell Inc. | Turbidity sensor with analog to digital conversion capability |
| US5586567A (en) * | 1995-01-10 | 1996-12-24 | General Electric Company | Dishwasher with turbidity sensing mechanism |
| US5555583A (en) * | 1995-02-10 | 1996-09-17 | General Electric Company | Dynamic temperature compensation method for a turbidity sensor used in an appliance for washing articles |
| US5800628A (en) * | 1996-10-22 | 1998-09-01 | Honeywell Inc. | Continuous cycle operation for dishwashers using turbidity sensor feedback |
| DE19705927A1 (de) * | 1997-02-17 | 1998-08-20 | Aeg Hausgeraete Gmbh | Geschirrspülmaschine mit einer Einrichtung zum Ermitteln des Verschmutzungsgrades einer Spülflüssigkeit |
| US5831727A (en) * | 1997-04-29 | 1998-11-03 | Hach Company | Bubble elimination from liquid |
| DE19831688C1 (de) * | 1998-07-15 | 2000-04-06 | Whirlpool Co | Optischer Sensor |
| DE19949801A1 (de) * | 1999-10-15 | 2001-04-19 | Bsh Bosch Siemens Hausgeraete | Verfahren und Vorrichtung zur Bestimmung der Art und Konzentration von Beimischungsanteilen in einer Flüssigkeit |
| DE10040483A1 (de) * | 2000-08-18 | 2002-03-07 | Miele & Cie | Verfahren zur Ermittlung des Verschmutzungsgrades der Spülflüssigkeit bei einer mit einem Trübungssensor ausgestatteten programmgesteuerten Geschirrspülmaschine |
-
2000
- 2000-11-28 DE DE10059112A patent/DE10059112C1/de not_active Expired - Fee Related
-
2001
- 2001-10-30 DE DE50111309T patent/DE50111309D1/de not_active Expired - Lifetime
- 2001-10-30 AT AT01125828T patent/ATE343344T1/de not_active IP Right Cessation
- 2001-10-30 ES ES01125828T patent/ES2272395T3/es not_active Expired - Lifetime
- 2001-10-30 EP EP01125828A patent/EP1208790B1/de not_active Expired - Lifetime
- 2001-11-27 US US10/001,838 patent/US7246625B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1297780A3 (de) * | 2001-09-21 | 2006-04-12 | Miele & Cie. KG | Einrichtung mit einem Trübungssensor für eine Geschirrspülmaschine oder Waschmaschine |
| EP1472967A3 (de) * | 2003-04-29 | 2007-08-08 | Miele & Cie. KG | Einrichtung mit einem Trübungssensor für eine Geschirrspülmaschine oder Waschmaschine |
| US7392813B2 (en) | 2003-04-29 | 2008-07-01 | Miele & Cie. Kg | Device for a turbidity sensor for a dishwasher or washing machine |
| US20090028700A1 (en) * | 2007-07-23 | 2009-01-29 | Clinton Coker | Appliance pump |
| US8397736B2 (en) * | 2007-07-23 | 2013-03-19 | Fisher & Paykel Appliances Limited | Appliance pump |
| DE102008020475A1 (de) | 2008-04-23 | 2009-11-05 | Miele & Cie. Kg | Verfahren zur Durchführung eines Spülprogramms mit Teilaustausch der im Spülbehälter befindlichen Spülflüssigkeit |
| EP2201885B2 (de) † | 2008-12-22 | 2020-07-08 | Whirlpool EMEA S.p.A | Geschirrspüler |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1208790B1 (de) | 2006-10-25 |
| ES2272395T3 (es) | 2007-05-01 |
| US20020062849A1 (en) | 2002-05-30 |
| DE10059112C1 (de) | 2002-05-08 |
| ATE343344T1 (de) | 2006-11-15 |
| EP1208790A3 (de) | 2005-03-02 |
| US7246625B2 (en) | 2007-07-24 |
| DE50111309D1 (de) | 2006-12-07 |
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