EP1332253A1 - Verfahren und vorrichtung zum ermitteln von ablagerungen von bestandteilen einer flüssigkeit an oberflächen, insbesondere in flüssigkeitsführenden maschinen - Google Patents
Verfahren und vorrichtung zum ermitteln von ablagerungen von bestandteilen einer flüssigkeit an oberflächen, insbesondere in flüssigkeitsführenden maschinenInfo
- Publication number
- EP1332253A1 EP1332253A1 EP01974329A EP01974329A EP1332253A1 EP 1332253 A1 EP1332253 A1 EP 1332253A1 EP 01974329 A EP01974329 A EP 01974329A EP 01974329 A EP01974329 A EP 01974329A EP 1332253 A1 EP1332253 A1 EP 1332253A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- deposits
- liquid
- components
- transmitter
- electromagnetic radiation
- 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
Links
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
- A47L15/4229—Water softening arrangements
-
- 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 method and a device for determining deposits of constituents of a liquid on surfaces, in particular in liquid-carrying machines, with at least one body, on whose surface these deposits occur, which influence the properties of electromagnetic radiation, with at least one transmitter and with at least one receiver that measures the electromagnetic radiation emitted by the transmitter to determine the deposits.
- a method and a device of the type mentioned at the outset is known from DE 198 25 981 A1, in which a transmitter sends a light beam through a sensor body with a large number of translucent surfaces to a receiver, which weakens the surface in the event of limescale deposits Can determine passage of the light beam and can initiate the implementation of a regeneration process of a water treatment device, in the illustrated embodiment of an ion exchanger, based on a comparison with a predetermined target value. Since the lime deposits on the surfaces are constantly accumulating, the setpoint must be adjusted; a calibration that is not described in detail must be carried out for this.
- Also known from DE 199 04 280 A1 is a method and a device of the type mentioned at the outset, in which a transmitter sends a light beam through a transparent body, the light beam being introduced into the body in such a way that it is on the surface of the body Body is broken many times.
- the receiver can detect a weakening of the incoming light beam and, as described above, initiate a regeneration process of a water treatment device, in the exemplary embodiment of an ion exchanger shown, on the basis of a comparison with a predetermined target value.
- the adaptation of the specified target value - the calibration - is explained in this publication, it also being described that the calibration can also be used to determine if the deposits on the body are so strong that they have to be removed.
- the invention is therefore based on the object of calibrating and removing the deposits by the user in a simple manner in a method and a device for determining deposits of constituents of a liquid on surfaces of the type mentioned at the outset, while ensuring that to avoid reliable functioning of the method and the device for determining deposits of constituents of a liquid on surfaces.
- This object is achieved in that, at least at the beginning of a new measuring period, any deposits of constituents of the liquid are removed from the surface of the body without movement of the body.
- the measurement period is defined by the period from the start of the measurement to triggering the regeneration of the ion exchanger.
- the deposits of constituents of a liquid are removed without mechanical influence on the surface of the body, thereby avoiding damage to the sensor body and ensuring reliable radio communication. tion of the method for determining deposits of constituents of a liquid is guaranteed.
- the deposits of constituents of a liquid are removed without additional chemical action on the surface of the body, with the additional use of chemical cleaning agents, such as citric acid etc., and possible damage to the sensor body being avoided and the safe functioning of the Method for determining deposits of components of a liquid is guaranteed.
- a mixture of soft water and cleaning additive is applied to the surface of the body.
- a cleaner used e.g. Silicates etc.
- any mechanical or additional chemical action by decalcifying agents such as citric acid etc. is thus completely avoided, as a result of which the process can take place completely unnoticed by the user and by the user.
- the device with at least one body, on the surface of which deposits of constituents of the liquid which influence the properties of electromagnetic radiation occur is particularly advantageous with at least one transmitter and at least one receiver which transmits the electromagnetic radiation emitted by the transmitter to determine the deposits measures, installed in a dishwasher to carry out the method described above and any deposits of constituents of the liquid that may be present are removed from the surface of the body at least at the beginning of a new measuring period without the body moving.
- the device for carrying out the method according to the invention thus also has the same advantages as the method according to the invention.
- the household dishwasher has a translucent body, hereinafter referred to as the sensor body, which is arranged in such a way that deposits of components of a liquid can occur on its surface, as can also occur on the items to be cleaned that are stored in a treatment room of the household dishwasher can.
- a cleaning liquid is circulated in a dishwasher, with which the goods to be cleaned are acted upon.
- This cleaning liquid usually consists of water, to which cleaning additives are added in certain sub-program sections of the cleaning process.
- the water which forms the basis of the cleaning liquid is usually softened by means of a water treatment device, in the exemplary embodiment described using an ion exchanger.
- This ion exchanger has a known capacity for absorbing calcium ions, and with increasing absorption of calcium ions in the ion exchanger, less and less calcium ions can be removed from the water which is passed through. This means that the water used becomes increasingly harder as the capacity of the ion exchanger decreases.
- deposits form on the surface of heated objects when hard water evaporates, which are mainly lime in the form of scale (CaCO 3 ) and / or magnesium carbonate (MgCO 3 etc.) and / or residual deposits of a cleaner used, eg silicates, etc.
- deposits are observed as an indication of the dwindling performance of the ion exchanger in the device according to the invention, in order to be able to control the time at which the ion exchanger is regenerated.
- the deposits mentioned influence the property of electromagnetic radiation, in the described exemplary embodiment of a light beam in such a way that the deviations can be measured.
- the light beam is introduced into the sensor body by a transmitter in such a way that it is refracted many times on the surface of the sensor body. With increasing accumulation of deposits on the surface of the sensor body, a receiver can now determine a weakening of the incoming light beam due to the changed refraction of the light beam and thereby determine the thickness of the deposits.
- a sensor body with a large number of translucent surfaces can be arranged in such a way that deposits can occur on its surface, such as can also occur on the items to be cleaned that are stored in the treatment room of the household dishwasher ,
- the light beam would be sent from a transmitter through the alternative sensor body to a receiver, which can determine a weakening of the passage of the light beam in the event of limescale deposits on the surfaces.
- any deposits of constituents of the liquid that may be present are removed from the surface of the body at least at the beginning of a new measuring period without the body moving.
- calibration and decalcification of the sensor body are avoided in a simple manner.
- An additional control effort for the calibration as well as a possibly necessary, complex design of the sensor body that is suitable for removal are avoided.
- the entire process also takes place without user involvement.
- the deposits on the sensor body are removed without mechanical interference and without additional chemical action, which means that any damage to the sensor body and disturbances in the function of the method according to the invention can be avoided.
- this is achieved by applying a mixture of soft water and cleaning additive to the surface of the sensor body.
- a mixture of soft water and cleaning additive used, for example silicates, etc. on surfaces by exposure to a mixture of particularly soft water and dissolved therein, cleaning additive used in household dishwashers anyway.
- the inventive method and the inventive device mainly serve to control the regeneration time of an ion exchanger. The measurement period is therefore defined by the period from the start of the measurement until the regeneration of the ion exchanger is triggered. Immediately following the complete regeneration of the ion exchanger, including flushing the ion exchanger to remove remaining salt stocks, the softest water is available, in which the cleaning additive is now dissolved according to the invention and the mixture is applied to the sensor body.
Landscapes
- Washing And Drying Of Tableware (AREA)
- Sampling And Sample Adjustment (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10053220A DE10053220A1 (de) | 2000-10-26 | 2000-10-26 | Verfahren und eine Vorrichtung zum Ermitteln von Ablagerungen von Bestandteilen einer Flüssigkeit an Oberflächen, insbesondere in flüssigkeitsführenden Maschinen |
DE10053220 | 2000-10-26 | ||
PCT/EP2001/011527 WO2002034992A1 (de) | 2000-10-26 | 2001-10-05 | Verfahren und vorrichtung zum ermitteln von ablagerungen von bestandteilen einer flüssigkeit an oberflächen, insbesondere in flüssigkeitsführenden maschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1332253A1 true EP1332253A1 (de) | 2003-08-06 |
EP1332253B1 EP1332253B1 (de) | 2007-04-11 |
Family
ID=7661202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01974329A Expired - Lifetime EP1332253B1 (de) | 2000-10-26 | 2001-10-05 | Verfahren zum ermitteln von ablagerungen von bestandteilen einer flüssigkeit an oberflächen, insbesondere in flüssigkeitsführenden maschinen |
Country Status (6)
Country | Link |
---|---|
US (1) | US7175715B2 (de) |
EP (1) | EP1332253B1 (de) |
AT (1) | ATE359388T1 (de) |
DE (2) | DE10053220A1 (de) |
ES (1) | ES2283435T3 (de) |
WO (1) | WO2002034992A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7482591B2 (en) * | 2004-09-22 | 2009-01-27 | Miox Corporation | Carbonate scale detector |
US8509473B2 (en) * | 2009-06-29 | 2013-08-13 | Ecolab Inc. | Optical processing to control a washing apparatus |
US8229204B2 (en) * | 2009-06-29 | 2012-07-24 | Ecolab Inc. | Optical processing of surfaces to determine cleanliness |
US9420937B2 (en) * | 2009-12-17 | 2016-08-23 | Whirlpool Corporation | Dishwasher with dynamically controlled cycle of operation |
US9063080B2 (en) | 2013-07-26 | 2015-06-23 | Ecolab Usa Inc. | Method of deposition monitoring |
CN112746443A (zh) * | 2019-10-31 | 2021-05-04 | 青岛海尔滚筒洗衣机有限公司 | 洗涤设备的控制方法及洗涤设备 |
CN111530845B (zh) * | 2020-05-25 | 2022-05-31 | 重庆大学 | 一种基于超声波的均压电极手持式除垢装置及除垢方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3732074A (en) * | 1971-01-06 | 1973-05-08 | H Feitler | Scale meter |
JPS5923221A (ja) * | 1982-07-29 | 1984-02-06 | Denshi Jiki Kogyo Kk | 非磁性鋼管におけるスケ−ル堆積量検出方法及びこれに用いる装置 |
JPS5934135A (ja) * | 1982-08-20 | 1984-02-24 | Mitsubishi Electric Corp | 光学式水質測定装置 |
JPS60135749A (ja) * | 1983-12-23 | 1985-07-19 | Matsushita Electric Ind Co Ltd | スケ−ル検知装置 |
US5101851A (en) * | 1990-03-19 | 1992-04-07 | Khodabandeh Abadi | Apparatus for control of hard water scale deposition in cooling systems |
US5291626B1 (en) * | 1992-05-01 | 1996-05-21 | Gen Electric | Machine for cleansing articles |
US5341661A (en) * | 1993-12-15 | 1994-08-30 | General Electric Company | Sensor holder having a container with a projection for collecting fluid samples in a machine for cleansing articles |
DE19721976B4 (de) * | 1997-05-26 | 2008-07-24 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Feststellen eines unzulässig hohen Verkalkungsgrades in einem wasserführenden Haushaltsgerät |
DE19806559B4 (de) * | 1998-02-17 | 2015-10-29 | BSH Hausgeräte GmbH | Verfahren und Vorrichtung zur Behandlung von Geschirr in Spülmaschinen |
DE19825981C2 (de) | 1998-06-10 | 2003-04-10 | Bsh Bosch Siemens Hausgeraete | Verfahren und wassführendes Haushaltsgerät zur Wasserenthärtung |
DE19831688C1 (de) * | 1998-07-15 | 2000-04-06 | Whirlpool Co | Optischer Sensor |
DE19904280B4 (de) * | 1999-02-03 | 2005-08-18 | BSH Bosch und Siemens Hausgeräte GmbH | Vorrichtung und Verfahren zur Ermittlung von Ablagerungen an Glasoberflächen in Spülmaschinen |
US6341615B1 (en) * | 2000-09-13 | 2002-01-29 | Air Products And Chemicals, Inc. | Self-cleaning vacuum purge system |
-
2000
- 2000-10-26 DE DE10053220A patent/DE10053220A1/de not_active Withdrawn
-
2001
- 2001-10-05 AT AT01974329T patent/ATE359388T1/de active
- 2001-10-05 ES ES01974329T patent/ES2283435T3/es not_active Expired - Lifetime
- 2001-10-05 WO PCT/EP2001/011527 patent/WO2002034992A1/de active IP Right Grant
- 2001-10-05 EP EP01974329A patent/EP1332253B1/de not_active Expired - Lifetime
- 2001-10-05 DE DE50112345T patent/DE50112345D1/de not_active Expired - Lifetime
-
2003
- 2003-04-24 US US10/422,211 patent/US7175715B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0234992A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10053220A1 (de) | 2002-05-08 |
US20040000320A1 (en) | 2004-01-01 |
ATE359388T1 (de) | 2007-05-15 |
WO2002034992A1 (de) | 2002-05-02 |
DE50112345D1 (de) | 2007-05-24 |
EP1332253B1 (de) | 2007-04-11 |
ES2283435T3 (es) | 2007-11-01 |
US7175715B2 (en) | 2007-02-13 |
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