DE4031981C2 - Measuring device for washing machines - Google Patents

Measuring device for washing machines

Info

Publication number
DE4031981C2
DE4031981C2 DE4031981A DE4031981A DE4031981C2 DE 4031981 C2 DE4031981 C2 DE 4031981C2 DE 4031981 A DE4031981 A DE 4031981A DE 4031981 A DE4031981 A DE 4031981A DE 4031981 C2 DE4031981 C2 DE 4031981C2
Authority
DE
Germany
Prior art keywords
washing
measuring
measuring device
temperature
measurement
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 - Fee Related
Application number
DE4031981A
Other languages
German (de)
Other versions
DE4031981A1 (en
Inventor
Martin Dipl Ing Englmeier
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.)
Conti Temic Microelectronic GmbH
Original Assignee
Temic Telefunken Microelectronic GmbH
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 Temic Telefunken Microelectronic GmbH filed Critical Temic Telefunken Microelectronic GmbH
Priority to DE4031981A priority Critical patent/DE4031981C2/en
Publication of DE4031981A1 publication Critical patent/DE4031981A1/en
Application granted granted Critical
Publication of DE4031981C2 publication Critical patent/DE4031981C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14Arrangements for detecting or measuring specific parameters
    • D06F34/22Condition of the washing liquid, e.g. turbidity
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02Characteristics of laundry or load
    • D06F2103/08Humidity
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02Characteristics of laundry or load
    • D06F2103/12Temperature
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/20Washing liquid condition, e.g. turbidity
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/04Signal transfer or data transmission arrangements
    • D06F34/05Signal transfer or data transmission arrangements for wireless communication between components, e.g. for remote monitoring or control
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14Arrangements for detecting or measuring specific parameters
    • D06F34/18Condition of the laundry, e.g. nature or weight

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Description

Die Erfindung betrifft eine Meßvorrichtung für Temperatur- und Feuchtegradmessung des Waschgutes sowie für die Messung der chemischen Zusammensetzung der Waschlauge in einer Waschtrommel einer Waschmaschine gemäß dem Oberbegriff des Patentanspruches 1 (DE 86 05 065 U1).The invention relates to a measuring device for temperature and Moisture level measurement of the laundry and for measuring the chemical composition of the wash liquor in a washing drum a washing machine according to the preamble of claim 1 (DE 86 05 065 U1).

Die Messung der Temperatur bei Waschmaschinen wird in der Regel dadurch vorgenommen, daß die Temperatur des in die Waschtrommel fließenden Wassers festgestellt wird. Diese Temperatur entspricht natürlich nicht der in der Waschtrommel während des Waschvorganges im Waschgut herrschenden tatsächlichen Temperatur. Dies trifft ebenso zu für die Messung des tatsächlichen Feuchtegrades des Waschgutes nach dem Schleudervorgang bzw. während eines Trocknungsvorganges. Das Wascher­ gebnis hängt unter anderem von einer exakten Einhaltung der eingestellten Temperatur ab. Weiterhin können bei zu hoher Waschtemperatur manche Textilien zu stark strapaziert werden, wodurch deren Lebensdauer sinkt. Schließlich läßt sich mit einer exakten Kenntnis des Feuchtegrades der Wäsche der Energieeinsatz für den Schleuder- bzw. Trocknungsvorgang minimieren. Auch die Messung der chemischen Zusammensetzung der Waschlauge, beispielsweise des ph-Wertes, ist im Hinblick eines optimalen, waschmittelsparenden Waschvorganges wünschenswert.The measurement of temperature in washing machines is usually done made that the temperature of the flowing into the washing drum Water is detected. Of course, this temperature does not correspond to that in the washing drum in the laundry during the washing process prevailing actual temperature. This also applies to the Measurement of the actual moisture level of the laundry after Spin process or during a drying process. The washer The result depends, among other things, on exact adherence to the set Temperature. Furthermore, if the washing temperature is too high, some Textiles are too stressed, which reduces their lifespan. Finally, with an exact knowledge of the degree of moisture the Wash the energy used for the spinning or drying process minimize. Even measuring the chemical composition of the Wash liquor, for example the pH value, is in view of an optimal detergent-saving washing process desirable.

So ist in der gattungsbildenden DE 86 05 065 U1 eine Drehtrommel-Industrie­ waschmaschine mit einer Regelungseinrichtung für eine Produktkonzen­ tration des Waschgutes vorgesehen, wobei die Regelungseinrichtung aus einer Meßvorrichtung zur Messung eines konzentrationsabhängigen phy­ sikalischen Parameters des Waschgutes, aus einer Dosiereinrichtung zum Eindosieren des Produkts in das Waschgut und aus einer elektrischen Re­ geleinheit zum Überwachen der Meßvorrichtung und zum Einstellen der Do­ sierung der Dosiereinrichtung in Abhängigkeit von dem durch die Überwa­ chung der Meßvorrichtung festgestellten Meßergebnis des konzentrations­ abhängigen physikalischen Parameters besteht, wobei die Produktkonzen­ trationsregelungseinrichtung derart ausgebildet und angeordnet ist, daß ihre Meßvorrichtung an der Trommel anzuordnen und zugleich mit dieser in Drehbewegung zu versetzen ist.So is in the generic DE 86 05 065 U1 a rotary drum industry Washing machine with a control device for a product concentration tration of the laundry is provided, the control device a measuring device for measuring a concentration-dependent phy sical parameters of the laundry, from a dosing device to Dosing the product into the laundry and from an electrical re Gel unit for monitoring the measuring device and for setting the Do.  sation of the dosing device as a function of that by the monitoring Chung the measuring device determined result of the concentration dependent physical parameters, the product conc tion control device is designed and arranged such that arrange their measuring device on the drum and at the same time with this in Is to be rotated.

Die elektrische Verbindung zwischen der Meßvorrichtung und der Regeleinheit ist in Form eines Schleifkontakts in der Welle ausgebildet. Diese Art der elektrischen Verbindung findet sich bereits bei einer herkömmlichen Art einer Eintrommel-Tunnelwaschmaschine in der Form eines Schleifring/Kohlebürsten-Kontakts, der das Thermometer in der Trommel mit der Temperatur-Regeleinheit verbindet.The electrical connection between the measuring device and the Control unit is designed in the form of a sliding contact in the shaft. These The type of electrical connection is already found in one conventional type of a single drum tunnel washing machine in the form a slip ring / carbon brush contact, which the thermometer in the Connects drum to the temperature control unit.

Da die bekannte Meßvorrichtung fest mit der Waschtrommel verbunden ist, dreht sie sich mit dieser während des Waschbetriebes und taucht daher zyklisch aus dem Waschgut, so daß beispielsweise eine Temperaturmessung ungenau wird. Es müssen daher entsprechende Maßnahmen getroffen werden, die eine Verfälschung des Meßergebnisses verhindern.Since the known measuring device is firmly connected to the washing drum, she turns with it during the washing operation and therefore dives cyclically from the laundry, so that for example a temperature measurement becomes inaccurate. Appropriate measures must therefore be taken that prevent falsification of the measurement result.

Der Vollständigkeit halber wird erwähnt, daß aus der Druckschrift Techn. Mitt. AEG Telefunken 63 (1973), 7, Seite 278 bis 284 eine kontaktlose Meßvorrichtung zum kontinuierlichen Erfassen von Temperaturwerten auf rotierenden Teilen, insbesondere bei elektrischen Maschinen, bekannt ist. Auch bei dieser bekannten Meßvorrichtung ist die Meßelektronik zusammen mit dem Temperaturfühler fest mit dem rotierenden Teil verbunden, so daß bei Verwendung dieser Meßvorrichtung in einer Waschtrommel das schon o.g. Problem ebenfalls auftritt.For the sake of completeness, it is mentioned that Techn. Mitt. AEG Telefunken 63 (1973), 7, pages 278 to 284 a contactless Measuring device for the continuous recording of temperature values rotating parts, especially in electrical machines, is known. In this known measuring device, the measuring electronics are together with the temperature sensor firmly connected to the rotating part, so that when using this measuring device in a washing drum the above. Problem also occurs.

Die Aufgabe der Erfindung besteht daher darin, eine Meßvorrichtung für Waschmaschinen der eingangs genannten Art anzugeben, die eine exakte Messung der Temperatur und des Feuchtegrades des Waschgutes sowie der chemischen Zusammensetzung der Waschlauge zuläßt, ohne die oben ge­ nannten Nachteile aufzuweisen.The object of the invention is therefore to provide a measuring device for To specify washing machines of the type mentioned that have an exact Measurement of the temperature and the degree of moisture of the laundry as well as the chemical composition of the wash liquor allows without the above ge mentioned disadvantages.

Die Lösung dieser Aufgabe ist bei der erfindungsgemäßen Meßvorrichtung durch die kennzeichnenden Merkmale des Patentanspruches 1 gelöst. This object is achieved in the measuring device according to the invention solved by the characterizing features of claim 1.  

Demnach besteht das Wesen der Erfindung darin, die Temperatur und den Feuchtegrad direkt sowie die chemische Zusammensetzung im Waschgut bzw. in der Waschlauge zu ermitteln und nicht-drahtgebunden mittels einer Sendeeinheit einer Empfangseinheit zu übermitteln, die außerhalb der Trommel in der Waschmaschine angeordnet ist. Die der Steuereinheit der Waschmaschine zugeführten Meßergebnisse können derart verarbeitet wer­ den, daß eine optimale Steuerung des Waschvorganges erzielt wird.Accordingly, the essence of the invention is the temperature and the Degree of moisture directly as well as the chemical composition in the laundry or in the wash liquor and not wired using a Transmitting unit to transmit a receiving unit that is outside the Drum is arranged in the washing machine. That of the control unit of the Measurement results fed to the washing machine can be processed in this way that an optimal control of the washing process is achieved.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispieles im Zu­ sammenhang mit der einzigen Figur erläutert.In the following the invention based on an embodiment in Zu connection with the single figure explained.

Diese Figur zeigt eine schematische Darstellung einer Waschmaschine 1 mit einer Waschtrommel 3 und einer Steuereinheit 6, die auch die Bedieneinhei­ ten aufweist. Die Waschtrommel 3 enthält außer dem Waschgut 4 eine Meß­ kugel 2, die ein kugelförmiges Behältnis für einen Temperatur- und einen Feuchtegradmeßfühler sowie einen Meßfühler zur Bestimmung der chemi­ schen Zusammensetzung, beispielsweise des ph-Wertes, zusammen mit ei­ ner Meßelektronik und einer Sendeeinheit enthält. Die Sendeeinheit dient zur drahtlosen Übermittlung der von der Meßelektronik aufgenommenen Meßergebnisse zu einer Empfangseinheit 5, die außerhalb der Waschtrom­ mel 3 in dem Gehäuse der Waschmaschine 1 angeordnet ist. Diese Meßergebnisse werden dann an die Steuereinheit 6 der Waschmaschine weitergeleitet.This figure shows a schematic representation of a washing machine 1 with a washing drum 3 and a control unit 6 , which also has the operating units. The washing drum 3 contains, in addition to the laundry 4, a measuring ball 2 , which contains a spherical container for a temperature and a humidity level sensor and a sensor for determining the chemical composition, for example the pH value, together with egg measuring electronics and a transmitting unit. The transmitter unit is used for wireless transmission of the measurement results recorded by the measuring electronics to a receiving unit 5 , which is arranged outside the wash flow mel 3 in the housing of the washing machine 1 . These measurement results are then forwarded to the control unit 6 of the washing machine.

Zur Energieversorgung der Meßelektronik und der Sendeeinheit kann in der Meßkugel 2 ein Energiespeicher, beispielsweise eine auswechselbare Batte­ rie vorgesehen werden. Auch kann hierzu ein aufladbarer Energiespeicher, beispielsweise ein Kondensator vorgesehen werden, der vor Beginn des Waschvorganges aufgeladen wird, und soviel elektrische Energie enthält, daß die Meßelektronik und die Sendeeinheit während des gesamten Wasch­ vorganges mit ausreichender Betriebsspannung versorgt wird.To supply energy to the measuring electronics and the transmitter unit, an energy store, for example a replaceable battery, can be provided in the measuring ball 2 . Also, a rechargeable energy storage device, for example a capacitor, can be provided for this purpose, which is charged before the start of the washing process and contains so much electrical energy that the measuring electronics and the transmitter unit are supplied with sufficient operating voltage during the entire washing process.

Für die Form des die Meßfühler, die Meßelektronik und die Sendeeinheit aufnehmenden Behältnisses 2 kann auch eine andere als die in diesem Beispiel angeführte Form vorgesehen werden.A shape other than that shown in this example can also be provided for the shape of the container 2 which receives the measuring sensors, the measuring electronics and the transmitter unit.

Claims (1)

Meßvorrichtung für Temperatur- und Feuchtegradmessung des Waschgu­ tes sowie für die Messung der chemischen Zusammensetzung der Wasch­ lauge in einer Waschtrommel einer Waschmaschine, die eine Steuereinheit aufweist, dadurch gekennzeichnet, daß Temperaturmeßfühler, Feuch­ tegradmeßfühler und Meßfühler zur Messung der chemischen Zusammen­ setzung zusammen mit einer Meßelektronik und einer zur drahtlosen Über­ tragung der Meßergebnisse vorgesehenen Sendeeinheit in einem Behält­ nis (2) untergebracht sind, wobei dieses Behältnis (2) zusammen mit dem Waschgut (4) sich frei bewegbar in der Waschtrommel (3) befindet, daß außerhalb der Waschtrommel (3) zum Empfang der Meßergebnisse eine Empfangseinheit (5) vorgesehen ist und daß die von der Empfangseinheit (5) empfangenen Meßergebnisse zur Auswertung an die Steuereinheit (6) der Waschmaschine (1) weitergeleitet werden.Measuring device for temperature and moisture level measurement of the Waschgu tes and for the measurement of the chemical composition of the wash liquor in a washing drum of a washing machine which has a control unit, characterized in that temperature sensors, moisture level sensors and sensors for measuring the chemical composition together with measuring electronics and one for the wireless transmission of the measurement results provided transmission unit transmission in a container nis (2) are housed, said container (2) movably located together with the laundry (4) free in the washing drum (3), that outside of the washing drum (3 ) a reception unit ( 5 ) is provided for receiving the measurement results and that the measurement results received by the reception unit ( 5 ) are forwarded to the control unit ( 6 ) of the washing machine ( 1 ) for evaluation.
DE4031981A 1990-10-09 1990-10-09 Measuring device for washing machines Expired - Fee Related DE4031981C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4031981A DE4031981C2 (en) 1990-10-09 1990-10-09 Measuring device for washing machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4031981A DE4031981C2 (en) 1990-10-09 1990-10-09 Measuring device for washing machines

Publications (2)

Publication Number Publication Date
DE4031981A1 DE4031981A1 (en) 1992-04-16
DE4031981C2 true DE4031981C2 (en) 1996-03-07

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Publication number Priority date Publication date Assignee Title
DE19713686A1 (en) * 1997-04-03 1998-10-08 Frank Dipl Ing Arbeiter Indicator unit e.g for programme-controlled washing machine or drier
DE19810907C2 (en) * 1998-03-12 2003-05-08 Maas Ruth Detection device for laundry items
DE102021203780A1 (en) 2021-04-16 2022-10-20 BSH Hausgeräte GmbH System for determining washing-mechanical data in a laundry treatment device and method for its operation
EP3794174B1 (en) * 2018-05-17 2024-02-07 Arçelik Anonim Sirketi A washer-dryer in which dryness of the laundry items is effectively detected

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KR20210000449A (en) * 2019-06-25 2021-01-05 삼성전자주식회사 Wireless sensing device, dryer and method for controlling the same
KR20220000580A (en) * 2020-06-26 2022-01-04 삼성전자주식회사 Sensing device for dryer
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19713686A1 (en) * 1997-04-03 1998-10-08 Frank Dipl Ing Arbeiter Indicator unit e.g for programme-controlled washing machine or drier
DE19810907C2 (en) * 1998-03-12 2003-05-08 Maas Ruth Detection device for laundry items
EP3794174B1 (en) * 2018-05-17 2024-02-07 Arçelik Anonim Sirketi A washer-dryer in which dryness of the laundry items is effectively detected
DE102021203780A1 (en) 2021-04-16 2022-10-20 BSH Hausgeräte GmbH System for determining washing-mechanical data in a laundry treatment device and method for its operation

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OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: TEMIC TELEFUNKEN MICROELECTRONIC GMBH, 7100 HEILBR

8120 Willingness to grant licences paragraph 23
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D2 Grant after examination
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