DE19725536A1 - Control of electrical energy supplied to air heating element of washer-dryer - Google Patents

Control of electrical energy supplied to air heating element of washer-dryer

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Publication number
DE19725536A1
DE19725536A1 DE19725536A DE19725536A DE19725536A1 DE 19725536 A1 DE19725536 A1 DE 19725536A1 DE 19725536 A DE19725536 A DE 19725536A DE 19725536 A DE19725536 A DE 19725536A DE 19725536 A1 DE19725536 A1 DE 19725536A1
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Germany
Prior art keywords
heating
dryer
air
humidity
room air
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Granted
Application number
DE19725536A
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German (de)
Other versions
DE19725536C2 (en
Inventor
Wolfhard Jording
Gerhard Rodefeld
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Miele und Cie KG
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Miele und Cie KG
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Filing date
Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Priority to DE19725536A priority Critical patent/DE19725536C2/en
Publication of DE19725536A1 publication Critical patent/DE19725536A1/en
Application granted granted Critical
Publication of DE19725536C2 publication Critical patent/DE19725536C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
    • 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
    • D06F58/48—Control of the energy consumption
    • 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/20—Operation modes, e.g. delicate laundry washing programs, service modes or refreshment cycles
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/08—Humidity
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/34—Humidity
    • 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
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

An innovative method controls air heating power of a washer-dryer, especially a dryer with outgoing air. This comprises a drying chamber with air inlet and outlet. The heater (1) precedes the inlet and is under programmed control. Before heater operation is commenced, a temperature sensor measures the room air temperature TR. Here, the new feature is a sensor also determining the relative humidity of the room air. Heater programmed control by the microprocessor (8), is thus a function of both room air temperature and its relative humidity.

Description

Die Erfindung betrifft ein Verfahren zum Steuern der Heizleistung eines Wäsche­ trockners, insbesondere eines Ablufttrockners, mit einer Trockenkammer mit einem Lufteinlaß und einem Luftauslaß, mit einer vor dem Lufteinlaß angeordneten Heizvorrichtung und mit einer Programmsteuerung zum Ansteuern der Heizvorrich­ tung wobei über mindestens einen Temperatursensor vor Inbetriebnahme der Heizvorrichtung die Messung eines Raumluft-Temperaturwertes TR erfolgt.The invention relates to a method for controlling the heating power of a laundry dryer, in particular an exhaust air dryer, with a drying chamber with an air inlet and an air outlet, with a heating device arranged in front of the air inlet and with a program control for controlling the Heizvorrich device with at least one temperature sensor before startup the heating device measures a room air temperature value T R.

Es ist aus der DE 195 04 249 A1 bekannt, bei einem Wäschetrockner, die Heiz­ leistung in Abhängigkeit von einem während des Trockenvorgangs gemessenen Temperaturwert zu steuern. Um an warmen Tagen die elektrische Energieaufnahme eines Trockners, insbesondere eines Ablufttrockners durch verstärkte Nutzung der Umwelt-(Sonnen-)energie zu reduzieren, erfolgt über mindestens einen Temperatursensor vor Inbetriebnahme der Heizvorrichtung die Messung eines Raumluft-Temperaturwertes TR und die Ansteuerung der Heizung erfolgt durch die Programmsteuerung in Abhängigkeit von diesem Raumluft-Temperaturwert TR.It is known from DE 195 04 249 A1 to control the heating power in a tumble dryer as a function of a temperature value measured during the drying process. In order to reduce the electrical energy consumption of a dryer, in particular an exhaust air dryer, through increased use of environmental (solar) energy on warm days, the measurement of a room air temperature value T R and the activation of the heating is carried out via at least one temperature sensor before the heating device is started up through the program control depending on this indoor air temperature value T R.

Bei einem derartigen Verfahren ist jedoch nicht nur der Wert der Raumlufttemperatur von Bedeutung. Für einen optimalen Trockenprozeß unter Ausnutzung der Energie der Raumluft ist auch der Wert der relativen Raumluftfeuchte von Bedeutung, um ein energiesparendes Trocknen zu ermöglichen.With such a method, however, it is not only the value of the room air temperature significant. For an optimal drying process using energy The indoor air is also important to the value of the relative indoor air humidity to enable energy-saving drying.

Mit der vorliegenden Erfindung soll das Problem gelöst werden, an warmen Tagen die elektrische Energieaufnahme eines Trockners, insbesondere eines Ablufttrock­ ners in Abhängigkeit der am Aufstellungsort festgestellten Randbedingungen durch verstärkte Nutzung der Umwelt-(Sonnen-)energie zu reduzieren.The present invention is intended to solve the problem on warm days the electrical energy consumption of a dryer, in particular an exhaust air dryer depending on the boundary conditions determined at the installation site to reduce the increased use of environmental (solar) energy.

Erfindungsgemäß wird dieses Problem durch ein Verfahren zur Steuerung der Heizleistung eines Wäschetrockners, insbesondere eines Ablufttrockners, mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen ergeben sich aus den nachfolgenden Unteransprüchen. According to the invention, this problem is solved by a method for controlling the Heating output of a clothes dryer, in particular an exhaust air dryer, with the Features of claim 1 solved. Advantageous configurations result from the following subclaims.  

Die mit der erfindungsgemäßen Ausbildung erreichbaren Vorteile bestehen darin, daß bei hoher Raumluft-Temperatur und niedriger Raumluftfeuchte im Umge­ bungsbereich eine Reduzierung der Heizleistung und somit eine Energieeinsparung möglich ist. Mit einer im Trockner angeordneten Auswerteschaltung werden Raumlufttemperatur und Raumluftfeuchte in Relation zueinander gesetzt und in Abhängigkeit der gemessenen Werte eine Reduzierung der Heizleistung durchge­ führt. Die Raumlufttemperatur wird dabei vorzugsweise zu Beginn des Trocken­ prozesses bei ausgeschalteter Heizung über den Temperaturfühler nach der Trommel gemessen. Die Raumluftfeuchte wird in Abhängigkeit dieses Tempera­ turwertes und eines weiteren Temperaturwertes, der vorzugsweise ebenfalls von dem Temperaturfühler nach der Trommel erfaßt wird, ermittelt. Dazu wird nach einer festgesetzten Zeitspanne bei ausgeschalteter Heizung gemessen. Der Wert der Raumluftfeuchte wird in dieser ersten vorteilhaften Ausführung indirekt über die Temperaturwerte bei ausgeschalteter Heizung ermittelt. In einer zweiten vorteilhaften Ausführung der Erfindung erfolgt die direkte Erfassung der Raumluftfeuchte über einen Feuchtefühler.The advantages achievable with the training according to the invention are that with high indoor air temperature and low indoor air humidity in reverse a reduction in heating power and thus energy savings is possible. With an evaluation circuit arranged in the dryer Room air temperature and room air humidity in relation to each other and in Depending on the measured values, a reduction in the heating output leads. The room air temperature is preferably at the beginning of the drying process with the heating switched off via the temperature sensor after the Drum measured. The room air humidity is dependent on this tempera turwert and another temperature value, which is also preferably from the Temperature sensor after the drum is detected. This is done after a specified period of time measured with the heating switched off. The value of In this first advantageous embodiment, indoor air humidity is determined indirectly via the Temperature values determined with the heating switched off. In a second advantageous Execution of the invention takes place the direct detection of the room air humidity a humidity sensor.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachstehend näher erläutert:An embodiment of the invention is shown in the drawing and will explained in more detail below:

Fig. 1 zeigt schematisch den Aufbau eines Wäschetrockners mit der Prozeßluft­ führung über die Heizung (1), die Trommel (2) und das Gebläse (3) sowie die An­ steuerung der Heizung (1) in Abhängigkeit von Raumlufttemperatur TR und relativer Raumluftfeuchte YR. Der Wäschetrockner weist in der Bedienblende (4) eine Anwahlmöglichkeit für ein Energiesparprogramm über einen Drucktastenschalter (5) oder dgl. auf. Neben der Anwahl des Energiesparprogramms ist die Einstellung einer maximalen Trockenzeit tmax über Korrekturtasten (6) möglich. Die maximale Trockenzeit tmax ist dabei immer größer einer festgesetzten Minimalzeit tmin z. B. 1,5 Stunden festzulegen. Nach Anwahl des Energiesparprogramms wird bei aus­ geschalteter Heizung (1) und laufendem Prozeßluftgebläse (3) der Wert der Raumlufttemperatur TR1 über einen Temperatursensor (7) nach der Trommel (2) erfaßt. Innerhalb einer festgelegten Zeitspanne wird mindestens ein zweiter Tem­ peraturwert T2 vorzugsweise über den gleichen Temperatursensor (7) erfaßt. Die relative Raumluftfeuchte YR ist eine Funktion der Temperaturwerte von Raumluft­ temperatur TR1 und dem weiteren Temperaturwert T2 über der Zeit. Am Verlauf der Temperatur ist der Wert der relativen Raumluftfeuchte YR nach dem Psychro­ meterprinzip berechenbar. Es ist aber auch möglich, den wert der Raumluftfeuchte über einen nicht dargestellten Feuchtefühler direkt zu erfassen. Fig. 1 shows schematically the structure of a dryer with the process air management via the heater ( 1 ), the drum ( 2 ) and the fan ( 3 ) and the control of the heater ( 1 ) as a function of room air temperature T R and relative room humidity Y. R. In the control panel ( 4 ), the dryer has a selection option for an energy-saving program via a push-button switch ( 5 ) or the like. In addition to the selection of the energy saving program, a maximum drying time t max can be set using the correction buttons ( 6 ). The maximum drying time t max is always greater than a set minimum time t min . B. 1.5 hours. After selecting the energy-saving program, the value of the room air temperature T R1 is detected by a temperature sensor ( 7 ) after the drum ( 2 ) with the heating ( 1 ) and process air blower ( 3 ) switched off. Within a defined period of time, at least a second temperature value T 2 is preferably detected via the same temperature sensor ( 7 ). The relative room air humidity Y R is a function of the temperature values of room air temperature T R1 and the further temperature value T 2 over time. The value of the relative room air humidity Y R can be calculated according to the psychometric principle over the course of the temperature. However, it is also possible to directly record the value of the room air humidity using a humidity sensor (not shown).

Über den Mikrocomputer (8) der Programmsteuereinrichtung erfolgt die Ansteuerung der Heizung (1) für das Trockenprogramm in Abhängigkeit der erfaßten bzw. berechneten Werte TR und YR Ein Trockenprogramm ohne oder mit verringerter Heizleistung PH1 ist nur bei bestimmten Umgebungsbedingungen sinnvoll. Die Raumlufttemperatur TR sollte 20°C nicht unterschreiten und die relative Raum­ luftfeuchte YR sollte nicht mehr als 60% betragen. Je höher die Raumlufttemperatur TR und je niedriger die relative Raumluftfeuchte YR desto weniger Heizleistung PHges ist erforderlich. Für die Raumlufttemperatur TR wird ein erster Grenzwert TRGrenz1, der nicht unterschritten werden sollte, und ein zweiter Grenzwert TRGrenz2, der für einen optimalen Trockenprozeß überschritten werden darf, festgelegt. Vom Mikrocomputer (8) werden die in Fig. 2a bis 2c gezeigten Ansteuerungsmöglichkeiten für die Heizung (1) vorgegeben:
The heating ( 1 ) for the drying program is controlled via the microcomputer ( 8 ) of the program control device as a function of the detected or calculated values T R and Y R. A drying program without or with a reduced heating output P H1 is only useful in certain environmental conditions. The room air temperature T R should not fall below 20 ° C and the relative room humidity Y R should not be more than 60%. The higher the room air temperature T R and the lower the relative room humidity Y R, the less heating power P Hges is required. A first limit value T RGrenz1 , which should not be undercut, and a second limit value T RGrenz2 , which may be exceeded for an optimal drying process, are defined for the room air temperature T R. The control options for the heater ( 1 ) shown in FIGS. 2a to 2c are specified by the microcomputer ( 8 ):

  • a) Raumtemperatur TR < TRGrenz1 oder relative Raumluftfeuchte YR < 60%, dann wie im normalen Trockenprogramm mit voller PHges oder verringerter Heizleistung PH1 trocknen.a) Room temperature T R <T R Limit1 or relative room humidity Y R <60%, then dry as in the normal drying program with full P Hges or reduced heating power P H1 .
  • b) TRGrenz1 < TR < TRGrenz2 und 40% < YR < 60%, dann Trockengang mit Teilheizung PH1 beginnen und die Heizung (1) entsprechend so schalten, daß an­ gewählte Trockenzeit tmax erreicht wird.b) T RGrenz1 <T R <T RGrenz2 and 40% <Y R <60%, then start drying with partial heating P H1 and switch the heating ( 1 ) accordingly so that the selected drying time t max is reached.
  • c) TR < TRGrenz2 und YR <40%, dann Trockengang ohne Heizung (1) beginnen und entsprechend der angewählten Zeit tmax die Heizung (1) zuschalten.c, then begin drying cycle without heating (1)) T R <T RGrenz2 Y and R <40%, and according to the selected switch time t max, the heater (1).

Bei allen anderen Raumlufttemperatur- und Raumluftfeuchtebedingungen wird die Heizleistung und Heizzeit so variiert, daß auf jeden Fall die angewählte maximale Trockendauer nicht überschritten wird.For all other indoor air temperature and indoor air humidity conditions, the Heating output and heating time vary so that the selected maximum in any case Drying time is not exceeded.

Claims (4)

1. Verfahren zum Steuern der Heizleistung eines Wäschetrockners, insbesondere eines Ablufttrockners, mit einer Trockenkammer mit einem Lufteinlaß und einem Luftauslaß, mit einer vor dem Lufteinlaß angeordneten Heizvorrichtung und mit einer Programmsteuerung zum Ansteuern der Heizvorrichtung, wobei über mindestens einen Temperatursensor vor Inbetriebnahme der Heizvorrichtung die Messung eines Raumluft-Temperaturwertes TR erfolgt, dadurch gekennzeichnet,
daß über einen Sensor der Wert der relativen Luftfeuchte YR ermittelt wird und daß
die Ansteuerung der Heizung (1) durch den Mikrocomputer (8) der Programm­ steuerung in Abhängigkeit von dem Raumluft-Temperaturwert TR und dem Wert der relativen Luftfeuchte YR erfolgt.1. A method for controlling the heating output of a tumble dryer, in particular an exhaust air dryer, with a drying chamber with an air inlet and an air outlet, with a heating device arranged in front of the air inlet and with a program control for controlling the heating device, the at least one temperature sensor being used before the heating device is started up A room air temperature value T R is measured, characterized in that
that the value of the relative air humidity Y R is determined by a sensor and that
the heating ( 1 ) is controlled by the microcomputer ( 8 ) of the program control as a function of the room air temperature value T R and the value of the relative air humidity Y R. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Wert der relativen Luftfeuchte YR in Abhängigkeit des Raumluftempera­ turwertes TR und eines weiteren Temperaturwertes T2 berechenbar ist, wobei der weitere Temperaturwert T2 nach einem festgelegten Zeitabschnitt vor Inbetrieb­ nahme der Heizung erfaßt wird.2. The method according to claim 1, characterized in that the value of the relative humidity Y R in dependence on the room air temperature value T R and a further temperature value T 2 can be calculated, the further temperature value T 2 being detected after a predetermined period of time before the heater is started up becomes. 3. Wäschetrockner mit einer Einrichtung zur Ansteuerung der Heizung sowie einer Programmanwahleinrichtung zur Anwahl eines Energiesparprogramms sowie mit Mitteln zur Durchführung eines Verfahrens nach Anspruch 1 oder 2 dadurch gekennzeichnet, daß zur Ermittlung der relativen Raumluftfeuchte ein Temperatursensor (7) vorge­ sehen ist.3. tumble dryer with a device for controlling the heating and a program selection device for selecting an energy-saving program and with means for carrying out a method according to claim 1 or 2, characterized in that a temperature sensor ( 7 ) is provided for determining the relative room humidity. 4. Wäschetrockner mit einer Einrichtung zur Ansteuerung der Heizung sowie einer Programmanwahleinrichtung zur Anwahl eines Energiesparprogramms sowie mit Mitteln zur Durchführung eines Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß ein Sensor zur direkten Erfassung der relativen Raumluftfeuchte vorgesehen ist.4. Tumble dryer with a device for controlling the heating and one Program selection device for selecting an energy saving program and with Means for carrying out a method according to claim 1, characterized, that a sensor is provided for the direct detection of the relative room air humidity.
DE19725536A 1997-06-17 1997-06-17 Process for controlling the heating power of a clothes dryer Expired - Fee Related DE19725536C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19725536A DE19725536C2 (en) 1997-06-17 1997-06-17 Process for controlling the heating power of a clothes dryer

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Application Number Priority Date Filing Date Title
DE19725536A DE19725536C2 (en) 1997-06-17 1997-06-17 Process for controlling the heating power of a clothes dryer

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DE19725536A1 true DE19725536A1 (en) 1998-12-24
DE19725536C2 DE19725536C2 (en) 2000-06-15

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Cited By (6)

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EP1420104A1 (en) * 2002-11-15 2004-05-19 CANDY S.p.A. Process for drying laundry in a drying device
WO2006050767A2 (en) * 2004-11-15 2006-05-18 Emz-Hanauer Gmbh & Co. Kgaa Method for determining a property of a fluid for a household device
WO2009080468A1 (en) * 2007-12-20 2009-07-02 BSH Bosch und Siemens Hausgeräte GmbH Washing/drying device comprising a moisture determining device and method for operating a washing/drying device
US8978267B2 (en) 2008-10-24 2015-03-17 Bsh Bosch Und Siemens Hausgeraete Gmbh Dryer having a heat pump, method for operating the same, and method for air conditioning a room
CN108577734A (en) * 2018-06-20 2018-09-28 佛山市顺德区美的洗涤电器制造有限公司 Dish-washing machine and its control method, device
DE102017217767A1 (en) * 2017-10-06 2019-04-11 BSH Hausgeräte GmbH Laundry treatment apparatus and method for operating a laundry treatment appliance

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DE10302973B3 (en) * 2003-01-25 2004-09-09 Electrolux Home Products Corporation N.V. Tumble dryer and method of controlling heat output
DE102005062938A1 (en) * 2005-12-29 2007-07-05 BSH Bosch und Siemens Hausgeräte GmbH A method for establishing the moisture content of circulated clothes drying air in a domestic dryer has a dual temperature measurement system by which the accuracy of the measurement is improved
DE102006020578A1 (en) * 2006-05-03 2007-11-08 BSH Bosch und Siemens Hausgeräte GmbH Circuit arrangement and method for operating a Peltier module of a heat pump of a domestic appliance
DE102006037239A1 (en) * 2006-08-09 2008-02-14 BSH Bosch und Siemens Hausgeräte GmbH Method and tumble dryer for controlling the drying of wet laundry
DE102012016516A1 (en) 2012-08-21 2014-02-27 Fritz Curtius Dryer for laundry, has volume control unit which is connected to fan, and pipeline portions are provided to and from the drum, and are provided for small amounts of air so as to increase proportionality factor

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Publication number Priority date Publication date Assignee Title
EP1420104A1 (en) * 2002-11-15 2004-05-19 CANDY S.p.A. Process for drying laundry in a drying device
WO2006050767A2 (en) * 2004-11-15 2006-05-18 Emz-Hanauer Gmbh & Co. Kgaa Method for determining a property of a fluid for a household device
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