EP1108808B1 - Device for measuring transmission - Google Patents
Device for measuring transmission Download PDFInfo
- Publication number
- EP1108808B1 EP1108808B1 EP00124543A EP00124543A EP1108808B1 EP 1108808 B1 EP1108808 B1 EP 1108808B1 EP 00124543 A EP00124543 A EP 00124543A EP 00124543 A EP00124543 A EP 00124543A EP 1108808 B1 EP1108808 B1 EP 1108808B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring device
- outflow duct
- transmission measuring
- pipe section
- measurement pipe
- 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
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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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/22—Condition of the washing liquid, e.g. turbidity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/20—Washing liquid condition, e.g. turbidity
Definitions
- the invention relates to a transmission measuring device for measuring the light transmittance of liquids and relates in particular to a transmission measuring device for measuring the light transmittance and a based on it Determination of the degree of turbidity of alkalis in household appliances.
- Household appliances such as a drum washing machine after a drain hole arranged in the bottom of the tub, a drain line system arranged in which a solid pipe section with a transparent area is arranged, on the wall of which an optical sensor device is attached is.
- the sensor device consisting of an optical transmitter and receiver detects the cloudiness of the lye.
- Such a drum washing machine is known from DE 36 03 323 A1.
- the in this drum washing machine the sensor device is so far down in the drainage system built in that the water remaining in the drain system lead to calcification of the transparent area of the solid pipe section can and thus the measurement values would be falsified.
- the accuracy of the measured values would be less and the control of the rinsing after Washing process not optimal depending on the determined clouding process.
- the consequence would be a quality of the wash products that is not optimally achievable ineffective expenditure of water and electrical energy.
- this turbidity sensor on the one hand on the vibrating tub and on the other on the fixed drain pump this is from the tub vibrations affected. Furthermore, the fastening points of the line section are thereby exposed to very strong mechanical loads that cause premature Cause wear and cause functional failures.
- the line section is on the one hand at an upper Part of a drain pipe connected to the drain hole and on the other hand to the connected higher to the tub and the sensor in one fork-like, the pipe section encompassing housing installed on the Contact surfaces to the transparent area of the outer shape of the pipe section is adjusted.
- the disadvantage of this arrangement is the technical effort due to the required multi-part liquid line.
- the invention is therefore based on the object, the attachment of the optical To design sensor device for detecting the turbidity of the alkali so that neither the sensor device through the attachment points of the line section Vibrations during spinning are too heavily loaded, limescale deposits inside the transparent area of the pipe section can be prevented, and the technical effort is kept low.
- a transmission measuring device for detecting the degree of turbidity of an alkali according to the characterizing part of claim 1.
- the sensor device is no longer the remaining lye residue exposed. At the same time, vibrations during the skid are for the Sensor device and the fastenings of the line sections irrelevant because these swing in the same direction as the surrounding assemblies.
- the adapter has a fitting for sealing against the alkali flowing in the drain line together with the measuring tube section as an outer body wall a sealing Form element on that simultaneously with the insertion into the opening the drain pipe can be inserted into a locking opening in the wall of the drain pipe is.
- the fitting with the measuring tube section is advantageous in this way in the drain line introduced that the transparent measuring tube section between the drain hole and a spacer ring upstream of an alkali return check valve is arranged.
- the transparent measuring tube section of the sensor device is preferably in a fork-like, arranged around the transparent measuring tube section housing and adapted to the housing at the contact surfaces of the measuring tube section (4).
- a preferred embodiment of the invention are in one of fork extensions of the housing at least one optical transmitter and in the other such fork extensions at least one optical receiver arranged opposite to each other and are electrically coupled together.
- the optical transmitter as an infrared light-emitting diode and the optical receiver can be designed as a phototransistor.
- the sensor device consists of several optical sensor barriers working in parallel.
- the transmission measuring device according to the invention is particularly advantageous for use in a drum washing machine or a dishwasher.
- the longitudinal section shown in Fig. 1 shows that below the drain hole 1 in the Drain pipe 2 arranged fitting piece 3.
- a component of the fitting piece 3 is the optically transparent measuring tube section 4.
- This measuring tube section 4 is organic connected to the fitting 3. It serves to limit the Flow rate of the lye for the turbidity measurement.
- the flow resistance the alkali flowing through the measuring tube section 4 is significantly lower than in the arrangements known from the prior art. Because the Measurements taken directly under the drain hole 1 is an accurate determination of the currently available degree of turbidity possible. The control processes can be carried out more precisely.
- On the outside Wall of the measuring tube section 4 is a thickening 9 with a mounting surface attached to which the sensor device is attached by means of a screw.
- the Lateral walls 5 within the fitting 3 are used for additional position fixation the sensor device.
- a spacer ring 8 is arranged, which the unimpeded Flow of the alkali through the measuring tube section 4 allows.
- An advantageous one Further development of the preferred solution can consist in that the constructive Design of the interior of the drain pipe 2 is designed so that it Function of the spacer ring 8 replaced.
- the function of the alkali return check valve 6 is arranged by its design and that in the drain line 2 Guideway guaranteed.
- it is waterproof Fitting 3 enclosing and adapted to the inner wall of the drain line 2 Body wall 11 provided for attachment and waterproof sealing is inserted into the locking openings 10.
- the thickening 9 screwed, not shown optical sensor device includes the Measuring tube section 4 by means of a fork-shaped holder with two sections, in one of which has at least one transmitter and the other at least one Receiver.
- FIG. 2 shows a cross section through the measuring tube section 4 with the organically connected Fitting piece 3. Furthermore, FIG. 2 shows the position fixing of the sensor device serving side walls 5 of the fitting 3. The thickening 9 with The mounting surface for screwing the sensor device is in this illustration facing the outside of the fitting 3 and offering thereby a simple assembly and disassembly option, not shown Sensor device.
- the organic compound is waterproof Body wall 11 between the fitting 3, the measuring tube section 4 and the inner wall of the drain line 2 shown.
- Fig. 3 shows a cross-sectional view of the rotated by 90 ° compared to FIG Fitting piece 3 with the lateral ones used to fix the position of the sensor device Walls 5 within the measuring tube section 4 and the profile view of the thickening 9.
- the lower flattened part of the thickening 9 serves to secure against Rotation of the screwed sensor device.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Vehicle Body Suspensions (AREA)
- Optical Measuring Cells (AREA)
Abstract
Description
Die Erfindung betrifft eine Transmissionsmeßvorrichtung zur Messung der Lichtdurchlässigkeit von Flüssigkeiten und bezieht sich insbesondere auf eine Transmissionsmeßvorrichtung zur Messung der Lichtdurchlässigkeit und einer darauf basierenden Ermittlung des Trübungsgrades von Laugen in Haushaltsgeräten. Bei bekannten Haushaltsgeräten wie beispielsweise einer Trommelwaschmaschine ist nach einem unten im Laugenbehälter angeordneten Ablaufloch ein Abflußleitungssystem angeordnet, in dem ein Feststoff-Rohrabschnitt mit einem transparenten Bereich angeordnet ist, an dessen Wandung eine optische Sensoreinrichtung angebaut ist. Die aus einem optischen Sender und Empfänger bestehende Sensoreinrichtung erfaßt dabei die Trübung der Lauge.The invention relates to a transmission measuring device for measuring the light transmittance of liquids and relates in particular to a transmission measuring device for measuring the light transmittance and a based on it Determination of the degree of turbidity of alkalis in household appliances. At acquaintances Household appliances such as a drum washing machine after a drain hole arranged in the bottom of the tub, a drain line system arranged in which a solid pipe section with a transparent area is arranged, on the wall of which an optical sensor device is attached is. The sensor device consisting of an optical transmitter and receiver detects the cloudiness of the lye.
Eine derartige Trommelwaschmaschine ist aus der DE 36 03 323 A1 bekannt. Die Sensoreinrichtung ist bei dieser Trommelwaschmaschine soweit unten im Laugenabflußsystem eingebaut, daß das im Laugenablaufsystem stehenbleibende Wasser zur Verkalkung des transparenten Bereiches des Feststoff-Rohrabschnittes führen kann und damit die Meßwerte verfälscht werden würden. Die Genauigkeit der Meßwerte wäre dadurch geringer und die Steuerung der Spülvorgänge nach dem Waschvorgang in Abhängigkeit vom ermittelten Trübungsvorgang nicht optimal. Die Folge wäre eine nicht optimal erreichbare Qualität der Waschprodukte und ein uneffektiver Aufwand an Wasser und elektrischer Energie. Durch die Anordnung dieses Trübungssensors einerseits am schwingenden Laugenbehälter und andererseits an der ortsfesten Laugenpumpe ist dieser von den Laugenbehälterschwingungen beeinflußt. Des weiteren sind dadurch die Befestigungsstellen des Leitungsabschnittes sehr starken mechanischen Belastungen ausgesetzt, die einen vorzeitigen Verschleiß hervorrufen und Funktionsausfälle verursachen können. Such a drum washing machine is known from DE 36 03 323 A1. The In this drum washing machine, the sensor device is so far down in the drainage system built in that the water remaining in the drain system lead to calcification of the transparent area of the solid pipe section can and thus the measurement values would be falsified. The accuracy of the measured values would be less and the control of the rinsing after Washing process not optimal depending on the determined clouding process. The The consequence would be a quality of the wash products that is not optimally achievable ineffective expenditure of water and electrical energy. By the arrangement this turbidity sensor on the one hand on the vibrating tub and on the other on the fixed drain pump this is from the tub vibrations affected. Furthermore, the fastening points of the line section are thereby exposed to very strong mechanical loads that cause premature Cause wear and cause functional failures.
Aus der DE 196 52 830 A1 ist weiter eine Trommelwaschmaschine bekannt mit einer zwischen einem unten im Laugenbehälter angeordneten Ablaufloch und einer weiter oben im Laugenbehälter angeordneten Öffnung geführten mehrteiligen Flüssigkeitsleitung, die einen Leitungsabschnitt enthält, der ausschließlich dazu dient, die im Laugenbehälter befindliche Lauge in einem Umlauf zwischen Öffnung und Ablaufloch zu halten, und der einen Feststoff-Rohrabschnitt mit einem transparenten Bereich aufweist, an dessen Wandung ein auf die Trübung der Lauge ansprechender, einen optischen Sender und einen optischen Empfänger enthaltender Sensor angebaut ist. Bei dieser Anordnung sind der Leitungsabschnitt einerseits an einem oberen Teil einer am Ablaufloch angeschlossenen Ablaufleitung und andererseits an der höher am Laugenbehälter gelegenen Öffnung angeschlossen und der Sensor in einem gabelartigen, den Rohrabschnitt umgreifenden Gehäuse eingebaut, das an den Kontaktflächen zu dem transparenten Bereich der äußeren Form des Rohrabschnittes angepaßt ist. Nachteilig bei dieser Anordnung ist jedoch der technische Aufwand durch die erforderliche mehrteilige Flüssigkeitsleitung.From DE 196 52 830 A1 a drum washing machine with a between a drain hole located at the bottom of the tub and another multi-part liquid line in the opening in the top of the tub, which contains a line section which is used exclusively for the The tub is in a circulation between the opening and the drain hole to hold, and the a solid pipe section with a transparent area has, on the wall of which is responsive to the cloudiness of the alkali, a sensor containing an optical transmitter and an optical receiver is. In this arrangement, the line section is on the one hand at an upper Part of a drain pipe connected to the drain hole and on the other hand to the connected higher to the tub and the sensor in one fork-like, the pipe section encompassing housing installed on the Contact surfaces to the transparent area of the outer shape of the pipe section is adjusted. The disadvantage of this arrangement is the technical effort due to the required multi-part liquid line.
Der Erfindung liegt deshalb die Aufgabe zugrunde, die Anbringung der optischen Sensoreinrichtung zur Erfassung der Trübung der Lauge so zu gestalten, daß weder die Sensoreinrichtung noch die Befestigungsstellen des Leitungsabschnittes durch Erschütterungen beim Schleudern zu stark belastet werden, Kalkablagerungen innerhalb des transparenten Bereiches des Rohrabschnittes verhindert werden, sowie der technische Aufwand gering gehalten wird.The invention is therefore based on the object, the attachment of the optical To design sensor device for detecting the turbidity of the alkali so that neither the sensor device through the attachment points of the line section Vibrations during spinning are too heavily loaded, limescale deposits inside the transparent area of the pipe section can be prevented, and the technical effort is kept low.
Diese Aufgabe wird erfindungsgemäß gelöst durch eine Transmissionsmeßvorrichtung zur Erfassung des Trübungsgrades einer Lauge gemäß dem Kennzeichen von Anspruch 1. This object is achieved according to the invention by a transmission measuring device for detecting the degree of turbidity of an alkali according to the characterizing part of claim 1.
Die Sensoreinrichtung wird so nicht mehr dem ständig verbleibenden Laugenrest ausgesetzt. Gleichzeitig sind Erschütterungen während des Schleuderns für die Sensoreinrichtung und die Befestigungen der Leitungsabschnitte unerheblich, da diese gleichsinnig mit den umgebenden Baugruppen schwingen.The sensor device is no longer the remaining lye residue exposed. At the same time, vibrations during the skid are for the Sensor device and the fastenings of the line sections irrelevant because these swing in the same direction as the surrounding assemblies.
Zur Abdichtung gegenüber der in der Ablaufleitung fließenden Lauge weist das Einpaßstück zusammen mit dem Meßrohrabschnitt als äußere Körperwandung ein abdichtendes Formelement auf, das gleichzeitig mit dem Einschieben in die Öffnung der Ablaufleitung in eine Arretieröffnung der Wandung der Ablaufleitung einschiebbar ist.The adapter has a fitting for sealing against the alkali flowing in the drain line together with the measuring tube section as an outer body wall a sealing Form element on that simultaneously with the insertion into the opening the drain pipe can be inserted into a locking opening in the wall of the drain pipe is.
Vorteilhaft wird das Einpaßstück mit dem Meßrohrabschnitt derart in die Ablaufleitung eingebracht, daß der transparente Meßrohrabschnitt zwischen dem Ablaufloch und einem einem Laugenrücklauf-Sperrventil vorgeordneten Abstandsring paßgerecht angeordnet ist.The fitting with the measuring tube section is advantageous in this way in the drain line introduced that the transparent measuring tube section between the drain hole and a spacer ring upstream of an alkali return check valve is arranged.
Bevorzugt ist der transparente Meßrohrabschnitt der Sensoreinrichtung in einem gabelartigen, den transparenten Meßrohrabschnitt umgreifenden Gehäuse angeordnet und an den Kontaktflächen des Meßrohrabschnittes (4) an das Gehäuse angepaßt.The transparent measuring tube section of the sensor device is preferably in a fork-like, arranged around the transparent measuring tube section housing and adapted to the housing at the contact surfaces of the measuring tube section (4).
In einer bevorzugten Ausführungsform der Erfindung sind in einem von Gabelfortsätzen des Gehäuses zumindest ein optischer Sender und in dem anderen solcher Gabelfortsätze zumindest ein optischer Empfänger angeordnet, die einander gegenüberliegen und elektrisch miteinander gekoppelt sind.In a preferred embodiment of the invention are in one of fork extensions of the housing at least one optical transmitter and in the other such fork extensions at least one optical receiver arranged opposite to each other and are electrically coupled together.
Hierbei können insbesondere der optische Sender als Infrarot-Leuchtdiode und der optische Empfänger als Fototransistor ausgebildet sein.In particular, the optical transmitter as an infrared light-emitting diode and the optical receiver can be designed as a phototransistor.
In einer vorteilhaften Weiterbildung der Erfindung besteht die Sensoreinrichtung aus mehreren parallel arbeitenden, optischen Sensorschranken. In an advantageous development of the invention, the sensor device consists of several optical sensor barriers working in parallel.
Die erfindungsgemäße Transmissionsmeßvorrichtung eignet sich insbesondere vorteilhaft zur Verwendung in einer Trommelwaschmaschine oder einer Geschirrspülmaschine.The transmission measuring device according to the invention is particularly advantageous for use in a drum washing machine or a dishwasher.
Die Erfindung wird nachstehend anhand eines bevorzugten Ausführungsbeispiels unter Bezugnahme auf die Zeichnung näher beschrieben. Es zeigen
- Fig.1
- einen Längsschnitt durch eine Gesamtanordnung der Ablaufleitung mit eingesetztem Einpaßstück;
- Fig. 2
- eine Querschnittsdarstellung des eingesetzten Einpaßstückes innerhalb der Ablaufleitung und
- Fig. 3
- eine gegenüber Fig. 2 um 90° gedrehte Querschnittsdarstellung des Einpaßstückes.
- Fig.1
- a longitudinal section through an overall arrangement of the drain line with inserted fitting;
- Fig. 2
- a cross-sectional view of the fitting used within the drain line and
- Fig. 3
- a 90 ° rotated cross-sectional view of the fitting.
Der in Fig. 1 dargestellte Längsschnitt zeigt das unterhalb des Ablaufloches 1 in der
Ablaufleitung 2 angeordnete Einpaßstück 3. Ein Bestandteil des Einpaßstückes 3 ist
der optisch transparente Meßrohrabschnitt 4. Dieser Meßrohrabschnitt 4 ist organisch
mit dem Einpaßstück 3 verbunden. Er dient zur vorgegebenen Begrenzung der
Strömungsmenge der Lauge für die Trübungsmessung. Zudem ist der Strömungswiderstand
der durch den Meßrohrabschnitt 4 fließenden Lauge wesentlich geringer
als bei den aus dem Stand der Technik bekannten Anordnungen. Dadurch, daß die
Messungen unmittelbar unter dem Ablaufloch 1 erfolgen, ist eine genaue Bestimmung
des jeweils aktuell vorhandenen Trübungsgrades möglich. Die Steuerungsvorgänge
können dadurch genauer durchgeführt werden. An der nach außen zeigenden
Wandung des Meßrohrabschnittes 4 ist eine Verdickung 9 mit einer Montagefläche
angebracht, an der die Sensoreinrichtung mittels einer Schraube befestigt ist. Die
seitlichen Wände 5 innerhalb des Einpaßstückes 3 dienen zur zusätzlichen Lagefixierung
der Sensoreinrichtung. Zwischen dem Laugenrücklauf-Sperrventil 6 und dem
Meßrohrabschnitt 4 ist ein Abstandsring 8 angeordnet, der den ungehinderten
Durchfluß der Lauge durch den Meßrohrabschnitt 4 ermöglicht. Eine vorteilhafte
Weiterbildung der bevorzugten Lösung kann darin bestehen, daß die konstruktive
Gestaltung des Innenraumes der Ablaufleitung 2 so ausgebildet ist, daß sie die
Funktion des Abstandsringes 8 ersetzt. Die Funktion des Laugenrücklauf-Sperrventiles
6 wird durch seine Ausbildung und der in der Ablaufleitung 2 angeordneten
Führungsbahn gewährleistet. Des weiteren ist eine wasserabdichtend das
Einpaßstück 3 umschließende und an die innere Wandung der Abflußleitung 2 angepaßte
Körperwandung 11 vorgesehen, die zur Befestigung und wasserdichten Abdichtung
in die Arretieröffnungen 10 eingeschoben wird. Die an der Verdickung 9
angeschraubte, nicht näher dargestellte optische Sensoreinrichtung umfaßt den
Meßrohrabschnitt 4 mittels einer gabelförmigen Halterung mit zwei Abschnitten, in
deren einem sich zumindest ein Sender und in deren anderem sich zumindest ein
Empfänger befinden. Durch die Anordnung mehrerer parallel arbeitender Sensoreinrichtungen
wird ein redundantes Sensorsystem geschaffen, wodurch die Sicherheit
und damit die Lebensdauer des Meßsystems bei Ausfall einer Sensorschranke erhöht
und durch eine Mittelwertbildung der gemessenen Werte aller angeordneten
Sensorschranken die Genauigkeit der ermittelten Meßwerte gesteigert wird.The longitudinal section shown in Fig. 1 shows that below the drain hole 1 in the
Fig. 2 zeigt einen Querschnitt durch den Meßrohrabschnitt 4 mit dem organisch verbundenen
Einpaßstück 3. Weiterhin zeigt Fig. 2 die zur Lagefixierung der Sensoreinrichtung
dienenden seitlichen Wände 5 des Einpaßstückes 3. Die Verdickung 9 mit
der Montagefläche für die Verschraubung der Sensoreinrichtung ist bei dieser Darstellung
der nach außen hin offenen Seite des Einpaßstückes 3 zugewandt und bietet
dadurch eine einfache Montage- und Demontagemöglichkeit der nicht dargestellten
Sensoreinrichtung. Darüber hinaus ist die organische Verbindung der wasserabdichtenden
Körperwandung 11 zwischen dem Einpaßstück 3, dem Meßrohrabschnitt
4 und der Innenwandung der Ablaufleitung 2 dargestellt.Fig. 2 shows a cross section through the measuring tube section 4 with the organically connected
Fig. 3 zeigt eine gegenüber der Fig. 2 um 90° gedrehte Querschnitt-Darstellung des
Einpaßstückes 3 mit den zur Lagefixierung der Sensoreinrichtung dienenden seitlichen
Wänden 5 innerhalb des Meßrohrabschnittes 4 sowie die Profilansicht der Verdickung
9. Der untere abgeflachte Teil der Verdickung 9 dient zur Sicherung gegen
Verdrehung der angeschraubten Sensoreinrichtung.Fig. 3 shows a cross-sectional view of the rotated by 90 ° compared to
Claims (9)
- Transmission measuring device for detecting the degree of turbidity of a washing solution, which device is arranged in an outflow duct (2) hydraulically connected with an outflow aperture (1) of a solution container of a water-conducting household machine and which comprises an optical sensor device consisting of a transmitter and a receiver and serving for detection of the degree of turbidity of the washing solution, the sensor device being mounted at a transparent measurement pipe section (4) which has an opening, which projects laterally out of the outflow duct (2), for the sensor device and both the region of the outflow duct (2) as well as the adapter (3) being so constructed that the adapter (3) is sealingly seated in a lateral opening, which is geometrically adapted therefor, of the outflow duct (2), characterised in that the measurement pipe section (4) is arranged directly below the outflow aperture (1) of the solution container within a adapter (3), which is connected with the measurement pipe section, in the region of the outflow duct (2).
- Transmission measuring device according to claim 1, characterised in that the adapter (3) together with the measurement pipe section (4) comprises a shaped element, which seals relative to the region of the outflow duct (2), as an outer body wall (11) which on insertion into the lateral opening of the outflow duct (2) goes into intimate contact with a locking opening (10) extending around at the inner wall of the outflow duct (2).
- Transmission measuring device according to claim 1 or 2, characterised in that a washing solution non-return valve (6) is arranged in the outflow duct (2) in the direction of the outflowing washing solution behind the adapter (3) with the measurement pipe section (4) and a spacer ring (8) formed in the outflow duct (2).
- Transmission measuring device according to one of claims 1 to 3, characterised in that the transparent measurement pipe section (4) of the sensor device is arranged in a fork-shaped housing which engages around the transparent measurement pipe section (4) and the inner contact surfaces of which are matched to the shape of the contact surfaces of the sensor device.
- Transmission measuring device according to claim 4, characterised in that at least one optical transmitter is arranged in one of the two fork portions of the housing and at least one optical receiver is arranged in the other of the fork portions, the transmitter and receiver being disposed opposite one another and electrically coupled together.
- Transmission measuring device according to claim 5, characterised in that the optical transmitter is constructed as an infrared luminescent diode and the optical receiver as a phototransistor.
- Transmission measuring device according to claim 1, 5 or 6, characterised in that the sensor device consists of several optical sensor barriers operating in parallel.
- Washing machine characterised by a transmission measuring device according to one of claims 1 to 7.
- Dishwashing machine characterised by a transmission measuring device according to one of claims 1 to 7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19961113 | 1999-12-17 | ||
| DE19961113A DE19961113A1 (en) | 1999-12-17 | 1999-12-17 | Transmission measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1108808A1 EP1108808A1 (en) | 2001-06-20 |
| EP1108808B1 true EP1108808B1 (en) | 2004-10-06 |
Family
ID=7933174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00124543A Expired - Lifetime EP1108808B1 (en) | 1999-12-17 | 2000-11-09 | Device for measuring transmission |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1108808B1 (en) |
| AT (1) | ATE278830T1 (en) |
| DE (2) | DE19961113A1 (en) |
| ES (1) | ES2230021T3 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES8303571A1 (en) * | 1981-02-18 | 1983-02-01 | Eaton Sa Monaco | Sensor arrangement for a washing machine. |
| 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 |
| DE19521326A1 (en) * | 1995-06-12 | 1996-12-19 | Bosch Siemens Hausgeraete | Method for temperature compensation of the measured values of a turbidity sensor in an automatic washing machine or dishwasher |
| DE19652830A1 (en) * | 1996-12-18 | 1998-06-25 | Bosch Siemens Hausgeraete | Drum washing machine with a multi-part liquid line |
-
1999
- 1999-12-17 DE DE19961113A patent/DE19961113A1/en not_active Withdrawn
-
2000
- 2000-11-09 ES ES00124543T patent/ES2230021T3/en not_active Expired - Lifetime
- 2000-11-09 EP EP00124543A patent/EP1108808B1/en not_active Expired - Lifetime
- 2000-11-09 AT AT00124543T patent/ATE278830T1/en not_active IP Right Cessation
- 2000-11-09 DE DE50008088T patent/DE50008088D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ES2230021T3 (en) | 2005-05-01 |
| EP1108808A1 (en) | 2001-06-20 |
| DE50008088D1 (en) | 2004-11-11 |
| DE19961113A1 (en) | 2001-06-21 |
| ATE278830T1 (en) | 2004-10-15 |
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