EP0543166A1 - Drier - Google Patents

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Publication number
EP0543166A1
EP0543166A1 EP92118062A EP92118062A EP0543166A1 EP 0543166 A1 EP0543166 A1 EP 0543166A1 EP 92118062 A EP92118062 A EP 92118062A EP 92118062 A EP92118062 A EP 92118062A EP 0543166 A1 EP0543166 A1 EP 0543166A1
Authority
EP
European Patent Office
Prior art keywords
fan
air
reduced
fans
heating
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.)
Withdrawn
Application number
EP92118062A
Other languages
German (de)
French (fr)
Inventor
Horst Sperling
Thomas Zerrer
Dietrich Berner
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.)
Bauknecht Hausgeraete GmbH
Whirlpool International BV
Original Assignee
Bauknecht Hausgeraete GmbH
Whirlpool International BV
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 Bauknecht Hausgeraete GmbH, Whirlpool International BV filed Critical Bauknecht Hausgeraete GmbH
Publication of EP0543166A1 publication Critical patent/EP0543166A1/en
Withdrawn legal-status Critical Current

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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
    • D06F58/52—Preventing or reducing noise
    • 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
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • 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
    • D06F2103/36—Flow or velocity
    • 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
    • D06F2105/16—Air properties
    • D06F2105/24—Flow or velocity
    • 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 tumble dryer with a laundry drum, with a fan for conveying process air, with a heater for heating up the process air and optionally with a condenser cooled by a further fan.
  • a dryer of the type mentioned is z. B. become known from DE-PS 29 14 859.
  • This tumble dryer is a condensation tumble dryer, in which the laundry drum with the fan for conveying the process air, with a condenser and with the heater for the process air is in a closed circuit.
  • a further fan for cooling the condenser is provided.
  • Such tumble dryers can either have a single motor for driving the laundry drum and the two fans, or they can each have a motor both for the laundry drum and for the fans.
  • a motor for driving the laundry drum and a motor for driving both fans can be provided.
  • Such tumble dryers are very common in the living area of a household, for. B. in the bathroom, and are used in night mode. The noise generated by the dryer can be very annoying. The fans are particularly responsible for this noise.
  • the invention is therefore based on the object that produced by a tumble dryer of the type mentioned Reduce noise.
  • This object is achieved according to the invention in a tumble dryer of the type mentioned in that the heating power can be reduced compared to its normal value and that the speeds of the circulating air and cooling air blowers can be adjusted to the reduced heating power.
  • This makes it possible to operate the dryer with a reduced heating output if required, which means that the fan speeds can also be reduced because the reduced heating output means that less process air per unit of time is no longer required.
  • the drying time is extended slightly, this is usually insignificant if the dryer is used in particular at night.
  • B. a reduction in heating power and drum and fan speed by 20 to 40%. This means a considerable reduction in the noise generated by the fans, which is particularly advantageous in the case of a dryer operating in a rented apartment during night operation.
  • a further reduction in noise can be achieved in that the speed of the fans can also be set as a function of the load.
  • the heating power and / or the speeds of the fans can preferably be set continuously or in stages. This enables individual adaptation to the respective conditions.
  • the laundry drum can be operated with a separate motor driven and kept constant in their speed, no matter which operating level is set. It would also be possible to operate the motor for the drum at a lower speed in order to further reduce noise.
  • the figure shows a laundry drum 10, which is in a closed circuit with a heater 11 for heating process air, with a fan 12 for conveying the process air and with a condenser 13. With 14 another fan for cooling the condenser 13 is designated.
  • the output of the heater 11 can be reduced, which means that the amount of air conveyed by the fan 12 through the circuit can also be reduced accordingly.

Abstract

The invention proposes a laundry drier with a laundry drum (10), with a fan (12) for conveying process air, with a heater (11) for heating the process air and, if appropriate, with a condenser cooled by a further fan (14), which laundry drier is so designed, in order to reduce noise, that the heating capacity can be reduced in comparison with the normal capacity, and that the rotational speed of the circulating-air and cooling-air fan (12, 14) can be adjusted to the reduced heating capacity. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Wäschetrockner mit einer Wäschetrommel, mit einem Ventilator zur Förderung von Prozeßluft, mit einer Heizung zum Aufheizen der Prozeßluft und gegebenenfalls mit einem von einem weiteren Ventilator gekühlten Kondensator.The invention relates to a tumble dryer with a laundry drum, with a fan for conveying process air, with a heater for heating up the process air and optionally with a condenser cooled by a further fan.

Ein Wäschetrockner der eingangs genannten Art ist z. B. durch die DE-PS 29 14 859 bekannt geworden. Dieser Wäschetrockner ist ein Kondensationswäschetrockner, bei dem die Wäschetrommel mit dem Ventilator zur Förderung der Prozeßluft, mit einem Kondensator und mit der Heizung für die Prozeßluft in einem geschlossenen Kreislauf liegt. Zusätzlich ist ein weiterer Ventilator zur Kühlung des Kondensators vorgesehen. Derartige Wäschetrockner können entweder einen einzigen Motor zum Antrieb der Wäschetrommel und der beiden Ventilatoren besitzen oder sowohl für die Wäschetrommel als auch für die Ventilatoren je einen Motor aufweisen. Schließlich kann ein Motor zum Antrieb der Wäschetrommel und ein Motor zum Antrieb beider Ventilatoren vorgesehen sein. Derartige Wäschetrockner stehen sehr häufig im Wohnbereich eines Haushaltes, z. B. im Badezimmer, und werden im Nachtbetrieb eingesetzt. Dabei kann das von dem Trockner erzeugte Geräusch sehr störend empfunden werden. Verantwortlich für dieses Geräusch sind insbesondere die Ventilatoren.A dryer of the type mentioned is z. B. become known from DE-PS 29 14 859. This tumble dryer is a condensation tumble dryer, in which the laundry drum with the fan for conveying the process air, with a condenser and with the heater for the process air is in a closed circuit. In addition, a further fan for cooling the condenser is provided. Such tumble dryers can either have a single motor for driving the laundry drum and the two fans, or they can each have a motor both for the laundry drum and for the fans. Finally, a motor for driving the laundry drum and a motor for driving both fans can be provided. Such tumble dryers are very common in the living area of a household, for. B. in the bathroom, and are used in night mode. The noise generated by the dryer can be very annoying. The fans are particularly responsible for this noise.

Der Erfindung liegt somit die Aufgabe zugrunde, das von einem Wäschetrockner der eingangs genannten Art erzeugte Geräusch zu reduzieren.The invention is therefore based on the object that produced by a tumble dryer of the type mentioned Reduce noise.

Diese Aufgabe wird gemäß der Erfindung bei einem Wäschetrockner der eingangs genannten Art dadurch gelöst, daß die Heizleistung im Vergleich zu ihrem Normalwert reduzierbar ist und daS die Drehzahlen des Umluft- und des Kühlluftgebläses auf die verminderte Heizleistung einstellbar sind. Damit ist es möglich, den Trockner auf Wunsch mit einer verminderten Heizleistung zu betreiben, was zur Folge hat, daß die Drehzahlen der Ventilatoren ebenfalls erniedrigt werden können, weil wegen der verminderten Heizleistung nicht mehr so viel Prozeßluft pro Zeiteinheit benötigt wird. Dies bedeutet zwar, daß die Trockenzeit geringfügig verlängert wird, was jedoch in der Regel unbedeutend ist, wenn der Trockner insbesondere im Nachtbetrieb verwendet wird. Gedacht ist z. B. an eine Reduzierung der Heizleistung und der Trommel- und Gebläsedrehzahl um 20 bis 40%. Dies bedeutet eine erhebliche Reduzierung des durch die Ventilatoren erzeugten Geräusches, was insbesondere bei einem im Nachtbetrieb innerhalb einer Mietwohnung arbeitenden Trockner sehr vorteilhaft ist.This object is achieved according to the invention in a tumble dryer of the type mentioned in that the heating power can be reduced compared to its normal value and that the speeds of the circulating air and cooling air blowers can be adjusted to the reduced heating power. This makes it possible to operate the dryer with a reduced heating output if required, which means that the fan speeds can also be reduced because the reduced heating output means that less process air per unit of time is no longer required. Although this means that the drying time is extended slightly, this is usually insignificant if the dryer is used in particular at night. Thought is B. a reduction in heating power and drum and fan speed by 20 to 40%. This means a considerable reduction in the noise generated by the fans, which is particularly advantageous in the case of a dryer operating in a rented apartment during night operation.

Eine weitere Geräuschverminderung kann dadurch erzielt werden, daß die Drehzahl der Gebläse zusätzlich in Abhängigkeit von der Beladung einstellbar sind.A further reduction in noise can be achieved in that the speed of the fans can also be set as a function of the load.

Vorzugsweise sind die Heizleistung und/oder die Drehzahlen der Ventilatoren kontinuierlich oder in Stufen einstellbar. Damit ist eine individuelle Anpassung an die jeweiligen Verhältnisse möglich.The heating power and / or the speeds of the fans can preferably be set continuously or in stages. This enables individual adaptation to the respective conditions.

Die Wäschetrommel kann mit einem separaten Motor angetrieben und in ihrer Drehzahl konstant gehalten werden, gleichgültig, welche Betriebsstufe eingestellt ist. Es wäre auch möglich, zur weiteren Geräuschreduzierung den Motor für die Trommel mit einer kleineren Drehzahl zu betreiben.The laundry drum can be operated with a separate motor driven and kept constant in their speed, no matter which operating level is set. It would also be possible to operate the motor for the drum at a lower speed in order to further reduce noise.

In der Zeichnung ist in der Figur ein Ausführungsbeispiel des Gegenstandes gemäß der Erfindung schematisch dargestellt.In the drawing, an embodiment of the object according to the invention is shown schematically in the figure.

Die Figur zeigt eine Wäschetrommel 10, die mit einer Heizung 11 zum Erhitzen von Prozeßluft, mit einem Ventilator 12 zur Förderung der Prozeßluft und mit einem Kondensator 13 in einem geschlossenen Kreislauf liegt. Mit 14 ist ein weiterer Ventilator zur Kühlung des Kondensators 13 bezeichneet. Gemäß der Erfindung kann die Leistung der Heizung 11 reduziert werden, was bedeutet, daß auch die von dem Ventilator 12 durch den Kreislauf geförderte Luftmenge entsprechend vermindert werden kann. Gleiches gilt für die von dem Ventilator 14 geförderte Kühlluftmenge für den Kondensator 13. Dies bedeutet, daß infolge der verringerten Drehzahlen der Ventilatoren das Geräusch erheblich vermindert wird.The figure shows a laundry drum 10, which is in a closed circuit with a heater 11 for heating process air, with a fan 12 for conveying the process air and with a condenser 13. With 14 another fan for cooling the condenser 13 is designated. According to the invention, the output of the heater 11 can be reduced, which means that the amount of air conveyed by the fan 12 through the circuit can also be reduced accordingly. The same applies to the amount of cooling air delivered by the fan 14 for the condenser 13. This means that the noise is considerably reduced as a result of the reduced speeds of the fans.

Claims (3)

Wäschetrockner mit einer Wäschetrommel (10), mit einem Ventilator (12) zur Förderung von Prozeßluft, mit einer Heizung (11) zum Aufheizen der Prozeßluft und gegebenenfalls mit einem von einem weiteren Ventilator (14) gekühlten Kondensator (13), dadurch gekennzeichnet, daß die Heizleistung der Heizung (11) im Vergleich zu ihrem Normalwert reduzierbar ist und daß die Drehzahlen des Umluft- und des Kühlluftventilators (12, 14) auf die verminderte Heizleistung einstellbar sind.Clothes dryer with a laundry drum (10), with a fan (12) for conveying process air, with a heater (11) for heating the process air and optionally with a condenser (13) cooled by a further fan (14), characterized in that the heating power of the heater (11) can be reduced compared to its normal value and that the speeds of the circulating air and cooling air fans (12, 14) can be adjusted to the reduced heating power. Wäschetrockner nach Anspruch 1, dadurch gekennzeichnet, daß die Drehzahlen des Umluft- und des Kühlluftventilators (12, 14) zusätzlich in Abhängigkeit von der Beladung der Wäschetrommel (10) einstellbar sind.Clothes dryer according to claim 1, characterized in that the speeds of the recirculating air and cooling air fans (12, 14) are additionally adjustable as a function of the load on the laundry drum (10). Wäschetrockner nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Heizleistung und/oder die Drehzahlen der Ventilatoren (12, 14) kontinuierlich oder in Stufen einstellbar sind.Clothes dryer according to claim 1 or 2, characterized in that the heating power and / or the speeds of the fans (12, 14) can be adjusted continuously or in stages.
EP92118062A 1991-11-15 1992-10-22 Drier Withdrawn EP0543166A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4137583 1991-11-15
DE4137583A DE4137583A1 (en) 1991-11-15 1991-11-15 LAUNDRY DRYER

Publications (1)

Publication Number Publication Date
EP0543166A1 true EP0543166A1 (en) 1993-05-26

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ID=6444871

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EP92118062A Withdrawn EP0543166A1 (en) 1991-11-15 1992-10-22 Drier

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EP (1) EP0543166A1 (en)
DE (1) DE4137583A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1408151A1 (en) * 2002-10-10 2004-04-14 Lg Electronics Inc. Condensation clothes dryer and method for controlling operation thereof
EP1564324A1 (en) * 2004-02-10 2005-08-17 Electrolux Home Products Corporation N.V. Variable speed low-noise household clothes drying machine
EP1860229A1 (en) * 2006-05-25 2007-11-28 Electrolux Home Products Corporation N.V. Household clothes drying machine with compact motor
ES2320302A1 (en) * 2007-04-09 2009-05-20 Union Planseca S.L. Improvements introduced in the application of spanish patent p200700921 by "dryer-clothing clothing". (Machine-translation by Google Translate, not legally binding)
US8112903B2 (en) * 2006-02-21 2012-02-14 Electrolux Home Products Corporation N.V. Household clothes drying machine with additional condenser

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4403625C2 (en) * 1994-02-05 2003-08-07 Miele & Cie Clothes dryer with a device for determining the degree of filling in the drum
DE19613310C2 (en) * 1995-04-05 2000-12-21 Miele & Cie Process for drying laundry
DE102008007564A1 (en) * 2008-02-05 2009-08-06 BSH Bosch und Siemens Hausgeräte GmbH Laundry drying device e.g. laundry complete dryer, has processing air fan, cooling air fan and laundry drum operated with reduced average number of revolutions for quiet drying process, where fans are operated by common fan motor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3239945A (en) * 1962-10-10 1966-03-15 Whirlpool Co Heat and blower control for a dryer
GB1519458A (en) * 1975-10-17 1978-07-26 Hotpoint Ltd Clothes dryers
DE2914859A1 (en) * 1979-04-12 1980-10-30 Bauknecht Gmbh G LAUNDRY DRYER
EP0324649A1 (en) * 1988-01-13 1989-07-19 Creda Limited Tumble driers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3239945A (en) * 1962-10-10 1966-03-15 Whirlpool Co Heat and blower control for a dryer
GB1519458A (en) * 1975-10-17 1978-07-26 Hotpoint Ltd Clothes dryers
DE2914859A1 (en) * 1979-04-12 1980-10-30 Bauknecht Gmbh G LAUNDRY DRYER
EP0324649A1 (en) * 1988-01-13 1989-07-19 Creda Limited Tumble driers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1408151A1 (en) * 2002-10-10 2004-04-14 Lg Electronics Inc. Condensation clothes dryer and method for controlling operation thereof
US6957501B2 (en) 2002-10-10 2005-10-25 Lg Electronics Inc. Clothes dryer and method for controlling operation thereof
EP1564324A1 (en) * 2004-02-10 2005-08-17 Electrolux Home Products Corporation N.V. Variable speed low-noise household clothes drying machine
US8112903B2 (en) * 2006-02-21 2012-02-14 Electrolux Home Products Corporation N.V. Household clothes drying machine with additional condenser
EP1860229A1 (en) * 2006-05-25 2007-11-28 Electrolux Home Products Corporation N.V. Household clothes drying machine with compact motor
ES2320302A1 (en) * 2007-04-09 2009-05-20 Union Planseca S.L. Improvements introduced in the application of spanish patent p200700921 by "dryer-clothing clothing". (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
DE4137583A1 (en) 1993-05-19

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