EP0862892B1 - Haushaltsgerät mit einer Messeinrichtung zum Ermitteln des Verschmutzungsgrades einer Reinigungsflüssigkeit - Google Patents
Haushaltsgerät mit einer Messeinrichtung zum Ermitteln des Verschmutzungsgrades einer Reinigungsflüssigkeit Download PDFInfo
- Publication number
- EP0862892B1 EP0862892B1 EP98100429A EP98100429A EP0862892B1 EP 0862892 B1 EP0862892 B1 EP 0862892B1 EP 98100429 A EP98100429 A EP 98100429A EP 98100429 A EP98100429 A EP 98100429A EP 0862892 B1 EP0862892 B1 EP 0862892B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring device
- measurement
- program
- programme
- degree
- 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
- 238000011109 contamination Methods 0.000 title claims description 10
- 238000004140 cleaning Methods 0.000 title claims description 9
- 239000007788 liquid Substances 0.000 title description 24
- 238000005259 measurement Methods 0.000 claims description 25
- 239000012530 fluid Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000013505 freshwater Substances 0.000 description 7
- 238000005429 filling process Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 238000011010 flushing procedure Methods 0.000 description 5
- 230000032683 aging Effects 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 235000021190 leftovers Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000007704 transition 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
- A47L15/4297—Arrangements for detecting or measuring the condition of the washing water, e.g. turbidity
Definitions
- the invention relates to a household appliance with a Measuring device for determining the degree of contamination a cleaning liquid according to the preamble of Claim 1.
- Such a household appliance is from DE-A-41 22 988 known.
- the dishwasher disclosed there the degree of soiling of a washware Flushing liquid through a measuring device in the intake duct a circulation pump. With the help of the determined The degree of soiling becomes the rinsing conditions set accordingly.
- the measuring device has one Luminous element for emitting light and two opposite arranged light receiving elements for receiving the emitted light, being between the transmitter and the Receivers the rinsing liquid is passed through.
- the Intensity of the emitted by the lighting element and to the Light receiving elements of excluded light is dependent on the degree of contamination of the rinsing liquid.
- the transmitting and receiving elements are aging subjected. This means that over the lifetime of the household appliance the sent and received Signals do not remain constant. In particular, this can occur in that transparent cover the Transmitting and receiving devices gradually become cloudy or pollute. This in turn causes incorrect measurements become more critical over time. For this reason is in the known dishwasher at the beginning of Wash program immediately after the first filling step Fresh water made a measurement, so one Set the initial value of the sensor output value. All subsequent measurements during the flushing operation related to this initial value, whereby the influence of the changing during the life of the device Conditions at the measurement location is hidden.
- the object of the present invention is therefore this Disadvantage of comparing the measuring device with itself conditions that change during the life of the device to avoid at the measuring location.
- a measured value for the adjustment of the Measuring device in the course of a cleaning program in a previous cleaning program is a home appliance created in which a Mismatch of the measuring device due to an already pre-contaminated liquid is avoided.
- a household appliance has one Measuring device for determining the degree of contamination a cleaning liquid to use the set the further program sequence to be able to.
- the Measuring device To influence the changing conditions at the measuring site z. B. due to aging of the broadcast and Reception facilities or a cloudiness possibly included Excluding transparent covers is the Measuring device according to the present conditions on Measurement site before the actual measurement of the Pollution degree can be adjusted.
- Household appliance is a measurement for the adjustment of the Measuring device for recording the degree of contamination in the course of a cleaning program in one previous cleaning program can be determined. To this Compared to a comparison measurement at the beginning of a Cleaning program avoided by the user introduced highly concentrated contaminants with the first fill with fresh water, which too mismatch. It makes sense to do this Measured value acquisition for the adjustment of the measuring device in a program part of the previous cleaning program, in which unpolluted rinsing liquid Rinsing container is located.
- the measured value for the calibration of the measuring device is preferably at the end of the previous one Cleaning program, preferably immediately after last filling process with fresh water. To this Way it is ensured that the in a before Filling process from the household appliance is not Removable amount of residual water still available Dirt particles in a particularly low concentration are. After the last filling process during a Cleaning program is the amount of dirt in the Flushing liquid negligible, so practical clear liquid is present.
- the invention is based on the drawing of a Embodiment explained in more detail.
- a household dishwasher includes one Rinsing container 1 for arranging items to be washed and three Spray devices, a lower spray arm 3, an upper Spray arm 5 and a ceiling shower 7.
- the spray devices 3, 5, 7 are from a circulation pump 9 with rinsing liquid fed.
- the circulation pump 9 sucks out the rinsing liquid the sump 11 of the washing container 1, in which the returning rinsing liquid collects.
- the circulation pump 9 is connected downstream of a reversing valve 13, which the the rinsing liquid supplied to the circulating pump 9 alternately a riser pipe 15 or a connecting hose 17 supplies.
- the riser pipe 15 carries the rinsing liquid upper spray arm 5 too.
- the connecting hose 17 branches itself in a connector 19 to the lower spray arm 3 and in a connecting hose 21, the other with the Ceiling shower 7 is coupled.
- the supply of fresh water takes place through a water supply hose 25 Flushing liquid is used at the end of the washing program a drain pump 27 removed from the device.
- the Dishwasher also has a turbidity sensor 23, which is coupled to the connecting hose 21 for Determination of the degree of contamination of the rinsing liquid on.
- the turbidity sensor 23 is used for an uninfluenced measurement the degree of pollution with the changing conditions compared at the measuring location. This comparison takes place at the beginning of a washing program, with a calibration measurement A in previous washing program is used.
- the Calibration measurement A is carried out when it is not contaminated Flushing liquid immediately after the fresh water filling process at the beginning of a rinse cycle.
- the basic sequence of the described two rinse programs being the rinse program X-1 is the name of the program in which the Adjustment measurement A, which is the basis for the adjustment of the Turbidity sensor 23 in the washing program X forms to consider is.
- Washing program X-1 is at least as a default in the essentially divided into the water-carrying rinse cycles Pre-rinse, clean, rinse and rinse, as well a final drying process.
- everyone water-carrying rinse starts with a water inlet and is ended with a pumping process of the rinsing liquid.
- a Add detergent or rinse aid In the rinse and rinse cycles, there is a Add detergent or rinse aid.
- a calibration measurement A for the turbidity sensor 23 is a measurement of the degree of pollution at the available clear rinsing liquid and the determined signal value for this degree of pollution 0 from an electronic program control, not shown recorded and in a non-volatile memory, a so-called EEPROM, saved.
- washing program X which is also called Presetting the rinse cycles, rinse, clean, Intermediate rinse and rinse and the final Drying cycle includes, the stored signal value for read the adjustment of the turbidity sensor 23 and the Turbidity sensor 23 calibrated using the adjustment value. All subsequent measurements of the degree of contamination during washing program X are on this in this way Adjustment measured value related.
- the Water inlet for the pre-rinse cycle and the rinse cycle will started. After about six minutes and after about eight minutes a measurement B, C is carried out and from the two Measured values formed an average. Falls below Average value of the degree of contamination a predetermined Value, the following water change (water change to Program step "cleaning") and the Detergent dosed. So there is a immediate transition from the pre-wash cycle to the Cleaning cycle without changing the rinsing liquid. That remains Average over the predetermined value, the Water changes carried out so that the preset The wash program sequence is not changed at this point.
- the Degree of pollution determined.
- two Measurements D, E carried out, this time after about two minutes and after about four minutes. Again, the two become determined measured values formed an average. If the mean falls below a further predetermined value Value, there is no intervention in the Program Sequence. In contrast, the mean remains above that predetermined value, a water change is carried out and a second intermediate rinse in the wash program inserted.
Landscapes
- Washing And Drying Of Tableware (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Description
- Fig. 1
- den Längsschnitt einer Haushalts-Geschirrspülmaschine und
- Fig. 2
- den prinzipiellen Ablauf zweier einander folgender Spülprogramme der Geschirrspülmaschine gem. Fig. 1.
Claims (5)
- Haushaltsgerät mit einer Meßeinrichtung zur Ermittlung des Verschmutzungsgrades einer Reinigungsflüssigkeit, wobei die Meßeinrichtung auf sich ändernde Bedingungen am Meßort abgleichbar ist, dadurch gekennzeichnet, daß ein Meßwert für den Abgleich der Meßeinrichtung (23) während eines Reinigungsprogrammes (Programm X) in einem vorhergehenden Reinigungsprogramm (Programm X-1) ermittelbar ist.
- Haushaltsgerät nach Anspruch 1, dadurch gekennzeichnet, daß der Meßwert für den Abgleich der Meßeinrichtung (23) in einem Programmteil mit unverschmutzter Spülflüssigkeit ermittelbar ist.
- Haushaltsgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Meßwert für den Abgleich der Meßeinrichtung (23) am Ende des vorhergehenden Spülprogrammes (Programm X-1) ermittelbar ist.
- Haushaltsgerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Meßwert in einem nicht-flüchtigen Speicher speicherbar ist.
- Haushaltsgerät nach Anspruch 4, dadurch gekennzeichnet, daß bei fehlendem Speicherwert ein vordefinierter Wert als Meßwert annehmbar ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19705926 | 1997-02-17 | ||
| DE19705926A DE19705926A1 (de) | 1997-02-17 | 1997-02-17 | Haushaltsgerät mit einer Meßeinrichtung zum Ermitteln des Verschmutzungsgrades einer Reinigungsflüssigkeit |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0862892A2 EP0862892A2 (de) | 1998-09-09 |
| EP0862892A3 EP0862892A3 (de) | 1999-02-17 |
| EP0862892B1 true EP0862892B1 (de) | 2003-06-25 |
Family
ID=7820417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98100429A Expired - Lifetime EP0862892B1 (de) | 1997-02-17 | 1998-01-13 | Haushaltsgerät mit einer Messeinrichtung zum Ermitteln des Verschmutzungsgrades einer Reinigungsflüssigkeit |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0862892B1 (de) |
| DE (2) | DE19705926A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19938010A1 (de) * | 1999-08-11 | 2001-02-15 | Bsh Bosch Siemens Hausgeraete | Verfahren zur Steuerung, Regelung und Dokumentation eines Reinigungsvorganges |
| DE10057210A1 (de) * | 2000-11-17 | 2002-05-23 | Miele & Cie | Verfahren zur automatischen Steuerung des Spülprozesses in einer Geschirrspülmaschine |
| DE10111006A1 (de) * | 2001-03-07 | 2002-11-07 | Miele & Cie | Verfahren zum Abgleichen eines Trübungssensors |
| DE10248538A1 (de) * | 2002-10-17 | 2004-04-29 | Aweco Appliance Systems Gmbh & Co. Kg | Verfahren zur Wasserverschmutzungserkennung |
| DE102004035848A1 (de) * | 2004-07-23 | 2006-03-23 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Kalibrieren von Sensoren |
| KR102634113B1 (ko) * | 2019-06-21 | 2024-02-05 | 엘지전자 주식회사 | 복합센서를 이용한 세탁조 오염 감지 방법, 장치 및 시스템 |
| DE102020130960B4 (de) | 2019-12-02 | 2024-03-28 | Miele & Cie. Kg | Verfahren zum Betreiben eines Spülprogramms zum Reinigen von Spülgut in einer Geschirrspülmaschine |
| DE102020212542A1 (de) * | 2020-10-05 | 2022-04-07 | BSH Hausgeräte GmbH | Wäschepflegegerät mit einer Steuerung |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04279136A (ja) * | 1991-03-06 | 1992-10-05 | Mitsubishi Electric Corp | 食器洗浄機 |
| DE19528978C2 (de) * | 1995-08-07 | 2001-05-17 | Bsh Bosch Siemens Hausgeraete | Verfahren zum Abgleichen einer optoelektronischen Einrichtung zum Feststellen eines Spül-Erfolgs in einer Wasch- oder Geschirrspülmaschine |
-
1997
- 1997-02-17 DE DE19705926A patent/DE19705926A1/de not_active Ceased
-
1998
- 1998-01-13 EP EP98100429A patent/EP0862892B1/de not_active Expired - Lifetime
- 1998-01-13 DE DE59808776T patent/DE59808776D1/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE19705926A1 (de) | 1998-08-20 |
| EP0862892A3 (de) | 1999-02-17 |
| DE59808776D1 (de) | 2003-07-31 |
| EP0862892A2 (de) | 1998-09-09 |
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