EP1838917B1 - Method for monitoring a temperature-dependent resistor, particularly in a clothes dryer - Google Patents

Method for monitoring a temperature-dependent resistor, particularly in a clothes dryer Download PDF

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Publication number
EP1838917B1
EP1838917B1 EP06743187A EP06743187A EP1838917B1 EP 1838917 B1 EP1838917 B1 EP 1838917B1 EP 06743187 A EP06743187 A EP 06743187A EP 06743187 A EP06743187 A EP 06743187A EP 1838917 B1 EP1838917 B1 EP 1838917B1
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EP
European Patent Office
Prior art keywords
temperature
heat source
resistor
monitoring
dependent resistor
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EP06743187A
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German (de)
French (fr)
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EP1838917A1 (en
Inventor
Kai-Uwe Bache
Thomas Nawrot
Ulrich Nehring
Andreas Ziemann
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Priority to PL06743187T priority Critical patent/PL1838917T3/en
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    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers
    • 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
    • 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
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/28—Electric heating

Definitions

  • the invention relates to a method for monitoring a temperature-dependent resistor, in particular a resistor with a negative temperature coefficient (NTC) for measuring the temperature in the vicinity of a heat source.
  • the heat source is preferably a heater for heating an air flow in a tumble dryer.
  • the invention relates to a method for operating such a tumble dryer and a tumble dryer itself for performing the method.
  • NTCs in tumble dryers to monitor temperatures in the tumble dryers.
  • the signals of the NTCs are recorded and evaluated in a control device, which is typically designed as a microcontroller, and converted into temperatures, which then serve as the basis for the control of the tumble dryer.
  • the NTCs are therefore of great importance for the safety of tumble dryers and are traditionally continuously monitored for cable breakage and / or short circuit.
  • a method for monitoring a PTC heating element is known from EP 1385073 known, further is a clothes dryer with a temperature-dependent resistor from the DE 19 704 213 known.
  • the invention has the object, a known method for monitoring a temperature-dependent resistance and a method for operating a clothes dryer and a known dryer for performing the two methods such that the safety of a device with a heat source and a Temperature-dependent resistance, in particular a clothes dryer, is further increased.
  • the first predetermined period of time is suitably chosen as a function of the heat output of the heat sources, the respective ambient temperature and the height of the predetermined temperature threshold. In principle, it can also be zero seconds; then the comparison of the current temperature in the environment of the heat source with the temperature threshold is accompanied by the time the heat source is turned on.
  • the claimed monitoring of the resistance-temperature characteristic (R over T) of the temperature-dependent resistor a possible change of its behavior or of its characteristic over time known.
  • R over T resistance-temperature characteristic
  • erroneous control of the device based on temperature values provided by the temperature-dependent resistor can be prevented. This contributes significantly to the reliability of the device, in particular the tumble dryer.
  • the above object is further achieved by a method of operating a tumble dryer which includes the claimed method for monitoring a temperature dependent resistance.
  • the two claimed methods are preferably realized by a computer program which runs on a control device of the device, preferably the tumble dryer.
  • the computer program implements another solution of the stated object.
  • the above task is accomplished a clothes dryer with a heat source, with a temperature-dependent resistor and with a control device for controlling the heat source and for monitoring the temperature-dependent resistance, the control device being designed to carry out the above-mentioned methods.
  • FIG. 1 shows a clothes dryer 100 according to the invention with a heat source 110 for heating air, which typically circulates in the clothes dryer for drying laundry. Furthermore, the clothes dryer 100 comprises a temperature-dependent resistor 120, in particular a resistor with a negative temperature coefficient NTC for measuring the temperature of the air flow in the tumble dryer, and a control device 130 for controlling the heat source and monitoring the temperature-dependent resistance.
  • a temperature-dependent resistor 120 in particular a resistor with a negative temperature coefficient NTC for measuring the temperature of the air flow in the tumble dryer
  • NTC negative temperature coefficient
  • the control device 130 is designed to carry out the two methods according to the invention, which are described below.
  • FIG. 2 illustrates a method according to the invention for monitoring the temperature-dependent resistor (NTC) 120 for measuring the temperature of the medium heated by the heat source, preferably the air flow in the tumble dryer 100.
  • NTC temperature-dependent resistor
  • RT resistance temperature
  • method step S3 monitoring of the RT characteristic of the wild-type position 120 takes place with regard to a possible, undesired temporal change or displacement.
  • monitoring of the RT characteristic of the wild-type position 120 takes place with regard to a possible, undesired temporal change or displacement.
  • This is done according to the invention by first checking in accordance with method step S4 whether the temperature measured by the temperature-dependent resistor 120 after a second predetermined period of time after the first time has expired lies within a predetermined temperature interval. If this is the case, then it is determined that the temperature-dependent resistance is still functional or that any change or shift of its RT characteristic that may have occurred is currently negligible; see method step S5b.
  • the heat source for heating the air flow in the clothes dryer remains active, see step S5a, and the control of the clothes dryer is performed taking into account the temperature values regulated by the resistance classified as functional.
  • step S4 if it is determined in step S4 that the temperature supplied by the temperature-dependent resistor 120 at the end of the second predetermined time outside the predetermined Tempereturintervallalls, it is determined according to the invention that the temperature-dependent resistor is defective; see method step S6b. In this case, according to process step S6a, the heat source shut down and a drying process in the dryer no further continued.
  • the temperature threshold, the first and second time periods and the temperature interval are each suitable to choose.

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

Abstract

A method for monitoring the proper functioning of a temperature-dependent resistor, particularly a NTC resistor, for measuring the temperature of a medium heated by a heat source. Said medium is preferably the air flow in a clothes dryer for drying clothes. In order to increase the safety of a device, in particular a clothes dryer, where the temperature-dependent resistor is used in combination with a heat source, it is checked, once the heat source is switched on, whether the temperature measured by the resistor after a first predetermined period of time following the switching on of the heat source falls below a predetermined temperature threshold value. If this is the case, monitoring of a resistor-temperature curve characteristic of the temperature-dependent resistor is carried out.

Description

Die Erfindung betrifft ein Verfahren zum Überwachen eines temperaturabhängigen Widerstandes, insbesondere eines Widerstandes mit negativem Temperaturkoeffizienten (NTC) zum Messen der Temperatur in der Umgebung einer Wärmequelle. Bei der Wärmequelle handelt es sich vorzugsweise um eine Heizung zum Erwärmen eines Luftstromes in einem Wäschetrockner. Darüber hinaus betrifft die Erfindung ein Verfahren zum Betreiben eines derartigen Wäschetrockners sowie einen Wäschetrockner selber zum Durchführen der Verfahren.The invention relates to a method for monitoring a temperature-dependent resistor, in particular a resistor with a negative temperature coefficient (NTC) for measuring the temperature in the vicinity of a heat source. The heat source is preferably a heater for heating an air flow in a tumble dryer. Moreover, the invention relates to a method for operating such a tumble dryer and a tumble dryer itself for performing the method.

Es ist bekannt, in Wäschetrocknern NTCs einzusetzen, um Temperaturen in den Wäschetrocknern zu überwachen. Die Signale der NTCs werden in einer typischerweise als Mikrocontroller ausgebildeten Steuereinrichtung erfasst und ausgewertet und in Temperaturen umgerechnet, die dann als Grundlage für die Steuerung des Wäschetrockners dienen. Die NTCs sind deshalb für die Sicherheit der Wäschetrockner von großer Bedeutung und werden traditionell kontinuierlich auf Kabelbruch und/oder Kurzschluss überwacht. Ein Verfahren zum Überwachen eines PTC Heizelements ist aus der EP 1385073 bekannt, weiter ist ein Wäschetrockner mit einem temperatur abhängigen Widerstand aus der DE 19 704 213 bekannt.It is known to use NTCs in tumble dryers to monitor temperatures in the tumble dryers. The signals of the NTCs are recorded and evaluated in a control device, which is typically designed as a microcontroller, and converted into temperatures, which then serve as the basis for the control of the tumble dryer. The NTCs are therefore of great importance for the safety of tumble dryers and are traditionally continuously monitored for cable breakage and / or short circuit. A method for monitoring a PTC heating element is known from EP 1385073 known, further is a clothes dryer with a temperature-dependent resistor from the DE 19 704 213 known.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein bekanntes Verfahren zum Überwachen eines temperaturabhängigen Widerstandes sowie ein Verfahren zum Betreiben eines Wäschetrockners und einen bekannten Wäschetrockner zum Durchführen der beiden Verfahren derart weiterzubilden, dass die Sicherheit eines Gerätes mit einer Wärmequelle und einem temperaturabhängigen Widerstand, insbesondere eines Wäschetrockners, weiter erhöht wird.Based on this prior art, the invention has the object, a known method for monitoring a temperature-dependent resistance and a method for operating a clothes dryer and a known dryer for performing the two methods such that the safety of a device with a heat source and a Temperature-dependent resistance, in particular a clothes dryer, is further increased.

Diese Aufgabe wird durch das in Patentanspruch 1 beanspruchte Verfahren gelöst. Dieses Verfahren ist durch folgende Schritte gekennzeichnet:

  • Einschalten der Wärmequelle;
  • Prüfen, ob die von dem temperaturabhängigen Widerstand nach einer ersten vorbestimmten Zeitdauer nach dem Einschalten der Wärmequelle gemessene Temperatur einen vorbestimmten Temperaturschwellenwert unterschreitet und
  • wenn ja: Durchführen einer Überwachung des Widerstandes auf Funktionstüchtigkeit
    oder,
  • wenn nein: Durchführen keiner Überwachung des Widerstandes.
This object is achieved by the method claimed in claim 1. This process is characterized by the following steps:
  • Switching on the heat source;
  • Check that the of the temperature dependent resistor after a first predetermined period of time after switching on the heat source measured temperature falls below a predetermined temperature threshold and
  • if so: performing a resistance monitoring for health
    or,
  • if not: no monitoring of the resistance.

Die erste vorbestimmte Zeitdauer wird sinnvollerweise in Abhängigkeit von der Wärmeleistung der Wärmequellen, der jeweiligen Umgebungstemperatur und der Höhe des vorbestimmten Temperaturschwellenwertes geeignet gewählt. Grundsätzlich kann sie auch null Sekunden betragen; dann geht der Vergleich der aktuellen Temperatur in der Umgebung der Wärmequelle mit dem Temperaturschwellenwert zeitlich mit dem Einschalten der Wärmequelle einher.The first predetermined period of time is suitably chosen as a function of the heat output of the heat sources, the respective ambient temperature and the height of the predetermined temperature threshold. In principle, it can also be zero seconds; then the comparison of the current temperature in the environment of the heat source with the temperature threshold is accompanied by the time the heat source is turned on.

Vorteilhafterweise wird durch die beanspruchte Überwachung der Widerstand-Temperatur-Kennlinie (R über T) des temperaturabhängigen Widerstandes eine mögliche Veränderung von dessen Verhalten bzw. von dessen Kennlinie im Zeitablauf bekannt. Mit einer derartigen Erkenntnis kann eine fehlerhafte Steuerung der Vorrichtung, die auf von dem temperaturabhängigen Widerstand gelieferten Temperaturwerten basiert, verhindert werden. Dies trägt zur Betriebssicherheit der Vorrichtung, insbesondere des Wäschetrockners, wesentlich bei.Advantageously, by the claimed monitoring of the resistance-temperature characteristic (R over T) of the temperature-dependent resistor, a possible change of its behavior or of its characteristic over time known. With such knowledge, erroneous control of the device based on temperature values provided by the temperature-dependent resistor can be prevented. This contributes significantly to the reliability of the device, in particular the tumble dryer.

Vorteilhafte Ausgestaltungen des beanspruchten Verfahrens sind Gegenstand der Unteransprüche, die einzeln oder in Kombination angewendet werden können.Advantageous embodiments of the claimed method are the subject of the dependent claims, which can be used individually or in combination.

Die oben genannte Aufgabe wird weiterhin durch ein Verfahren zum Betreiben eines Wäschetrockners gelöst, welches das beanspruchte Verfahren zum Überwachen eines temperaturabhängigen Widerstandes mit umfasst. Die beiden beanspruchten Verfahren sind vorzugsweise durch ein Computerprogramm realisiert, welches auf einer Steuereinrichtung der Vorrichtung, vorzugsweise des Wäschetrockners, abläuft. Das Computerprogramm realisiert eine weitere Lösung der genannten Aufgabe. Schließlich wird die oben genannte Aufgabe durch einen Wäschetrockner mit einer Wärmequelle, mit einem temperaturabhängigen Widerstand und mit einer Steuereinrichtung zum Steuern der Wärmequelle und zum Überwachen des temperaturabhängigen Widerstandes gelöst, wobei die Steuereinrichtung ausgebildet ist zum Durchführen der oben genannten Verfahren. Die Vorteile dieser Lösungen entsprechen den oben mit Bezug auf das beanspruchte Verfahren zum Überwachen des temperaturabhängigen Widerstandes genannten Vorteilen.The above object is further achieved by a method of operating a tumble dryer which includes the claimed method for monitoring a temperature dependent resistance. The two claimed methods are preferably realized by a computer program which runs on a control device of the device, preferably the tumble dryer. The computer program implements another solution of the stated object. Finally, the above task is accomplished a clothes dryer with a heat source, with a temperature-dependent resistor and with a control device for controlling the heat source and for monitoring the temperature-dependent resistance, the control device being designed to carry out the above-mentioned methods. The advantages of these solutions correspond to the advantages mentioned above with respect to the claimed method for monitoring the temperature-dependent resistance.

Der Beschreibung sind insgesamt zwei Figuren beigefügt, wobei

  • Figur 1 einen erfindungsgemäß ausgebildeten Wäschetrockner; und
  • Figur 2 das erfindungsgemäße Verfahren
schematisch veranschaulichen.The description is a total of two figures attached, wherein
  • FIG. 1 an inventively designed dryer; and
  • FIG. 2 the inventive method
illustrate schematically.

Die Erfindung wird nachfolgend in Form von Ausführungsbeispielen unter Bezugnahme auf die genannten Figuren detailliert beschrieben.The invention will now be described in detail in the form of embodiments with reference to said figures.

Figur 1 zeigt einen erfindungsgemäßen Wäschetrockner 100 mit einer Wärmequelle 110 zum Erwärmen von Luft, welche in dem Wäschetrockner zum Trocknen von Wäsche typischerweise zirkuliert. Weiterhin umfasst der Wäschetrockner 100 einen temperaturabhängigen Widerstand 120, insbesondere einen Widerstand mit negativem Temperaturkoeffizienten NTC zum Messen der Temperatur des Luftstromes in dem Wäschetrockner, und eine Steuereinrichtung 130 zum Steuern der Wärmequelle und Überwachen des temperaturabhängigen Widerstandes. FIG. 1 shows a clothes dryer 100 according to the invention with a heat source 110 for heating air, which typically circulates in the clothes dryer for drying laundry. Furthermore, the clothes dryer 100 comprises a temperature-dependent resistor 120, in particular a resistor with a negative temperature coefficient NTC for measuring the temperature of the air flow in the tumble dryer, and a control device 130 for controlling the heat source and monitoring the temperature-dependent resistance.

Die Steuereinrichtung 130 ist ausgebildet zum Durchführen der beiden erfindungsgemäßen Verfahren, welche nachfolgend beschrieben werden.The control device 130 is designed to carry out the two methods according to the invention, which are described below.

Figur 2 veranschaulicht ein erfindungsgemäßes Verfahren zum Überwachen des temperaturabhängigen Widerstandes (NTC) 120 zum Messen der Temperatur des von der Wärmequelle erwärmten Mediums, vorzugsweise des Luftstroms in dem Wäschetrockner 100. Das Verfahren sieht gemäß Verfahrensschritt S1 vor, dass zunächst die Wärmequelle 110 eingeschaltet wird. Nachfolgend ist gemäß Verfahrensschritt S2 vorgesehen, dass geprüft wird, ob die von dem Widerstand 120 nach einer ersten vorbestimmten Zeitdauer nach dem Einschalten der Wärmequelle gemessene Temperatur einen vorbestimmten Temperaturschwellenwert unterschreitet. FIG. 2 illustrates a method according to the invention for monitoring the temperature-dependent resistor (NTC) 120 for measuring the temperature of the medium heated by the heat source, preferably the air flow in the tumble dryer 100. The method according to method step S1, the heat source 110 is first switched on. Subsequently, according to method step S2, it is provided that it is checked whether that of the resistor 120 after a first predetermined period of time after switching on the heat source measured temperature falls below a predetermined temperature threshold.

Wenn dies nicht der Fall Ist, erfolgt erfindungsgemäß auch keine Überwachung einer Widerstands-Temperatur-(RT)-Kennlinie des Widerstandes 120; (siehe Verfahrensschritt S7). Bei Durchführung dieses Verfahrens In einem Wäschetrockner wird In diesem Fall der Trocknungsprozess weiter fortgeführt, das helßt die Wärmequelle 110 bleibt eingeschaltet und erwärmt den Luftstrom zum Trocknen der Wäsche in dem Wäschetrockner weiterhin; siehe Verfahrensschritt S5a.If this is not the case, no monitoring of a resistance temperature (RT) characteristic of the resistor 120 takes place according to the invention; (see method step S7). In this process, in a clothes dryer, in this case, the drying process is further continued, which heats the heat source 110 remains on and further heats the air flow for drying the laundry in the clothes dryer; see process step S5a.

Wenn jedoch andernfalls in Verfahrensschritt S2 festgestellt wird, dass die gemessene Temperatur den vorbestimmten Temperaturschwallenwert unterschreitet, erfolgt gemäß Verfahrensschritt S3 eine Überwachung der RT-Kennlinie des Wilderstandes 120 Im Hinblick auf eine eventuelle, unerwünschte zeitliche Veränderung bzw. Verschiebung. Dies erfolgt erfindungsgemäß, indem zunächst gemäß Verfahrensschritt S4 geprüft wird, ob die von dem temperaturabhängigen Widerstand 120 nach einer zweiten vorbestimmten Zeitdauer nach Ablauf der ersten Zeitdauer gemessene Temperatur In einem vorbestimmten Temperaturintervall liegt. Sollte dies der Fall sein, so wird festgestellt, dass der temperaturabhängige Widerstand noch funktionstüchtig ist bzw. dass eine eventuell stattgefundene Veränderung oder Verschiebung von dessen RT-Kennlinie zurzeit noch vernachlässigbar gering ist; siehe Verfahrensschritt S5b. In diesem Fall bleibt wenn das Verfahren in einem Wäschetrockner durchgeführt wird, die Wärmequelle zum Erwärmen das Luftstromes in dem Wäschetrocknerweiter aktiv, siehe Schritt S5a, und die Steuerung des Wäschetrockners erfolgt unter Berücksichtigung der von dem als funktionstüchtlg eingestuften Widerstand gelleferten Temperaturwerte.If, however, it is otherwise determined in method step S2 that the measured temperature falls below the predetermined temperature threshold value, according to method step S3 monitoring of the RT characteristic of the wild-type position 120 takes place with regard to a possible, undesired temporal change or displacement. This is done according to the invention by first checking in accordance with method step S4 whether the temperature measured by the temperature-dependent resistor 120 after a second predetermined period of time after the first time has expired lies within a predetermined temperature interval. If this is the case, then it is determined that the temperature-dependent resistance is still functional or that any change or shift of its RT characteristic that may have occurred is currently negligible; see method step S5b. In this case, when the process is carried out in a tumble dryer, the heat source for heating the air flow in the clothes dryer remains active, see step S5a, and the control of the clothes dryer is performed taking into account the temperature values regulated by the resistance classified as functional.

Andernfalls, wenn also In Verfahrensschritt S4 festgestellt wird, dass die von dem temperaturabhängigen Widerstand 120 gelieferte Temperatur am Ende der zweiten vorbestimmten Zeitdauer außerhalb des vorbestimmten Tempereturintervalls liegt, wird erfindungsgemäß festgestellt, dass der temperaturabhängige Widerstand defekt ist; siehe Verfahrensschritt S6b. In diesem Fall wird gemäß Verfahrensschritt S6a die Wärmequelle abgeschaltet und ein Trocknungsprozess in dem Wäschetrockner nicht weiter fortgeführt.Otherwise, if it is determined in step S4 that the temperature supplied by the temperature-dependent resistor 120 at the end of the second predetermined time outside the predetermined Tempereturintervallalls, it is determined according to the invention that the temperature-dependent resistor is defective; see method step S6b. In this case, according to process step S6a, the heat source shut down and a drying process in the dryer no further continued.

Der Temperaturschwellenwert, die erste und zweite Zeitdauer sowie das Temperaturintervall sind jeweils geeignet zu wählen.The temperature threshold, the first and second time periods and the temperature interval are each suitable to choose.

Claims (5)

  1. Method of monitoring a temperature-dependent resistor (120), particularly an NTC, for measuring the temperature of a medium heated by a heat source (110), particularly an air flow in a laundry drier (100), comprising the steps: S1: switching on the heat source (110), S2: checking whether the temperature measured by the resistor (120) after a first predetermined time period after the switching-on of a heat source (110) falls below a predetermined temperature threshold value, and, S3: if yes, carrying out a monitoring of the resistance/temperature characteristic curve (R over T) of the resistor (120) or, S7: if no, carrying out no monitoring of the resistance/temperature characteristic curve (R over T) of the resistor (120).
  2. Method according to claim 1, characterised in that the monitoring according to step S3 comprises the following part step: S4: checking whether the temperature measured by the resistor (120) after a second predetermined time period after expiry of the first time period lies in a predetermined temperature interval.
  3. Method according to claim 2, characterised by:
    establishing that the temperature-dependent resistor (120) is functionally capable if the check according to step S4 has the result that the temperature lies in the predetermined temperature interval (step S5b) or
    establishing that the temperature-dependent resistor (120) is faulty if the check according to step S4 has the result that the temperature lies outside the predetermined temperature interval (step S6b).
  4. Method of operating a laundry drier (100) with a heat source (110) for heating an air flow in the laundry drier (100) for drying, in particular, laundry and with a temperature-dependent resistor (120), particularly NTC, wherein the resistor (120) is monitored in accordance with the method according to one of claims 1 to 3, comprising the steps:
    allowing the heat source (110) to be switched on (step S5a) if in step S2 it was established that the temperature lay above the threshold value or if in step S4 it was established that the temperature after expiry of the second time period lay within the temperature interval or
    switching off the heat source (110) (step S6a) if in step S4 it was established that the temperature after expiry of the second time period lay outside the temperature interval.
  5. Laundry drier (100) with a heat source (110) for heating an air flow for drying of, in particular, laundry, a temperature-dependent resistor (120), particularly NTC, for measuring the temperature of the air flow, and a control device (130) for controlling the heat source (110) and for monitoring the temperature-dependent resistor (120), wherein the control (130) is constructed for carrying out the method according to any one of claims 1 to 4.
EP06743187A 2005-04-27 2006-02-08 Method for monitoring a temperature-dependent resistor, particularly in a clothes dryer Active EP1838917B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06743187T PL1838917T3 (en) 2005-04-27 2006-02-08 Method for monitoring a temperature-dependent resistor, particularly in a clothes dryer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005019588A DE102005019588A1 (en) 2005-04-27 2005-04-27 Method for monitoring a temperature-dependent resistance, in particular in a tumble dryer
PCT/EP2006/050775 WO2006114340A1 (en) 2005-04-27 2006-02-08 Method for monitoring a temperature-dependent resistor, particularly in a clothes dryer

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EP1838917A1 EP1838917A1 (en) 2007-10-03
EP1838917B1 true EP1838917B1 (en) 2008-09-03

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US (1) US7748897B2 (en)
EP (1) EP1838917B1 (en)
CN (1) CN101166867B (en)
AT (1) ATE407253T1 (en)
DE (2) DE102005019588A1 (en)
ES (1) ES2313652T3 (en)
PL (1) PL1838917T3 (en)
WO (1) WO2006114340A1 (en)

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CN101166867B (en) 2010-05-19
US7748897B2 (en) 2010-07-06
ATE407253T1 (en) 2008-09-15
ES2313652T3 (en) 2009-03-01
CN101166867A (en) 2008-04-23
DE502006001495D1 (en) 2008-10-16
US20090028214A1 (en) 2009-01-29
WO2006114340A1 (en) 2006-11-02
EP1838917A1 (en) 2007-10-03
DE102005019588A1 (en) 2006-11-09

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