WO2008043705A1 - Sèche-linge doté d'un dispositif d'affichage qui affiche le dégré d'encrassement - Google Patents

Sèche-linge doté d'un dispositif d'affichage qui affiche le dégré d'encrassement Download PDF

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Publication number
WO2008043705A1
WO2008043705A1 PCT/EP2007/060558 EP2007060558W WO2008043705A1 WO 2008043705 A1 WO2008043705 A1 WO 2008043705A1 EP 2007060558 W EP2007060558 W EP 2007060558W WO 2008043705 A1 WO2008043705 A1 WO 2008043705A1
Authority
WO
WIPO (PCT)
Prior art keywords
dryer
display
display element
temperature
process air
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.)
Ceased
Application number
PCT/EP2007/060558
Other languages
German (de)
English (en)
Inventor
Andreas Ziemann
Thomas Nawrot
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of WO2008043705A1 publication Critical patent/WO2008043705A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
    • D06F34/32—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress characterised by graphical features, e.g. touchscreens
    • 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
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user
    • D06F2105/60—Audible signals
    • 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

Definitions

  • the invention relates to a tumble dryer with a drum for drying wet laundry by means of process air, a heater in a supply air duct in front of the drum for heating the process air and an exhaust duct behind the drum, and with a control device, a temperature sensor for determining a temperature of the process air and a Display device for indicating a degree of contamination of the exhaust duct, wherein the display device and the temperature sensor are connected to the control device and the control device is adapted to determine the degree of contamination from the measured temperature with the temperature sensor
  • Such a tumble dryer is known from the document "Patent Abstracts of Japan” for the publication JP 2005137503 A.
  • the laundry dryer described therein is set up for issuing an alarm when a temperature, which receives the process air flow through the heater exceeds a predetermined limit. From this excess, it is concluded that there is a blockage of a filter located in the process air stream.
  • EP 0 889 155 B1 describes a method for detecting impermissible operating states in a tumble dryer, in which the temperature in the process air flow between a heater and the laundry drum is detected periodically and a difference value or a gradient is formed from values recorded at successive times which is compared to a predetermined value. If the newly formed difference value is greater than the predetermined difference value, a count value is increased by one step and compared with a predetermined count value. If the current count value is greater than the predetermined count value, the heater of the clothes dryer is switched off and / or an operating status display is activated.
  • the current temperature difference value is compared with a second predetermined permissible temperature difference value which corresponds to a permissible temperature increase resulting from lint screen clogging.
  • a heated air flow is passed through the drum and thus through the laundry, which remove moisture from the wet laundry and It can thereby gradually dry.
  • the supplied air flow is generally heated in a supply line in front of the drum by means of a heater and after passing through the laundry in the drum via an exhaust duct either discharged to the outside (exhaust air dryer) or fed to a heat exchanger in which the air is cooled and the moisture precipitates as condensate (condensation dryer).
  • the exhaust duct in which a fluff filter is generally located, is increasingly polluted by the operation of the tumble dryer.
  • the lint filter is becoming increasingly linty. Since this affects the passage of the process air, there is an increase in the temperature of the process air.
  • the object of the invention is therefore to provide a tumble dryer, in which the user of a tumble dryer is already an assessment of the degree of soiling even at low levels of contamination by deposited lint.
  • the invention thus teaches a tumble dryer with a drum for drying wet laundry by means of process air, a heater in a supply air duct in front of the drum for heating the process air and an exhaust duct behind the drum, and with a control device, a temperature sensor for determining a temperature of the process air and a display device for indicating a degree of contamination of the exhaust duct, wherein the display device and the temperature sensor with the Control means are connected and the control means is adapted to determine the degree of contamination from the measured temperature with the temperature sensor, the display device having a first end with a first display element and a second end with a second display element and the display elements can indicate a variety of levels of fouling of the exhaust duct , And the temperature sensor is arranged in the exhaust duct.
  • the display elements may represent different colors and / or color intensities.
  • the display elements are preferably light emitting diodes (LEDs).
  • LEDs light emitting diodes
  • the color that displays or emits a display element in the form of an LED if it is activated, in particular so driven with a corresponding electric current, not necessarily be recognized if the display element is not activated. Any specification made herein that a display element may "represent" a color or intensity is therefore to be understood as indicating that the display element indicates the specified color or intensity when activated.
  • first display element can display the color green and the display element at the second end of the device (“second display element”) the color red.
  • the display element adjacent to the first display element in each case preferably an LED, can likewise display green.
  • This embodiment has the advantage that the user of the tumble dryer although informed about an increasing degree of contamination, it is signaled by the same green color of the display elements, however, that the tumble dryer is still in a perfect, relatively clean state.
  • the tumble dryer according to the invention preferably has an odd number of display elements.
  • a display element located in the middle of the device can have a color and / or color intensity which differs from the colors and / or color intensities of the first display element at the first end and the second display element at the second end.
  • the control device is preferably set up for measuring a temperature of the process air in the exhaust duct of the temperature sensor and for controlling the display device in dependence on a predetermined assignment of the display elements to different regions of the temperature, for activating at least one of the measured temperature of the process air associated display element.
  • an indication of the measured temperature of the process air takes place in that each display element assigned to a specific temperature range into which the measured temperature of the process air falls is activated. Since the measured temperature is a measure of the pollution of the exhaust duct, such an indication of the degree of contamination of the exhaust duct or the lint filter.
  • the temperature of the process air is measured by means of a temperature sensor arranged in the exhaust duct downstream of the drum and evaluated the change in the temperature of the process air with respect to the indication of the degree of contamination.
  • a temperature sensor arranged in the exhaust duct downstream of the drum and evaluated the change in the temperature of the process air with respect to the indication of the degree of contamination.
  • the second display element to give by a corresponding acoustic encoder additionally an audible signal and / or to let the second display element unlike any other display element blink.
  • the user of the tumble dryer is particularly clearly pointed out to make a corresponding cleaning of the lint filter or the complete exhaust duct, which can be displayed long before its complete blockage due to corresponding preselected values, a display requesting to clean the lint filter.
  • Such equipped dryer can thus always work in a satisfactory and energy-saving operating condition.
  • the heating can thus be switched off. This can be a Overheating of the process air flow and thus damage to components and located in the tumble laundry due to contamination of the exhaust duct can be avoided.
  • the invention provides a user with a safer statement about the state of the exhaust duct or the lint filter. Since the temperature at the drum outlet to avoid damage to the laundry is generally limited by the control device to defined values (limit temperature), the heating power is reduced.
  • control device is set up to switch off the heating device, when the determined degree of contamination exceeds a predetermined limit value.
  • the tumble dryer according to the invention has numerous advantages.
  • the safety during operation of the tumble dryer is increased.
  • the invention it is possible to detect the condition of the tumble dryer well before reaching a high temperature and shut down the heating in good time or reduce.
  • the components of the clothes dryer in itself but also located in the drum laundry parts are protected from overheating.
  • Another advantage of the invention is that the user does not have to clean the lint filter after each use of the tumble dryer, but receives information about the actual fouling.
  • the exhaust air dryer it is also possible to determine whether the exhaust air duct used is e.g. is too long or needs cleaning. This is a problem because the exhaust duct is often unrecognized by the user during operation, resulting in a prolonged drying time and an unnoticed increase in energy consumption. The invention makes this recognizable to the user.
  • Temperature sensor can be used. Additional costs are generally due only to the additional display device.
  • FIGS. 1 and 2 a device for indicating the state of contamination of an exhaust duct of a tumble dryer is shown.
  • FIG. 2 shows a partial section through a tumble dryer, which shows both the variant of an exhaust air dryer type (solid lines) and the type of a condensation air dryer with circulating air principle (dashed lines).
  • FIG. 1 shows a display device 4, in which five light-emitting diodes (LEDs) 6, 7, 8, 9, 10 arranged in a row indicate the contamination state of the exhaust air duct 25 (see FIG. Above the light-emitting diodes is a brief description 14 of the meaning of the LEDs: "clean filter” or "clean airways".
  • LEDs light-emitting diodes
  • the display device 4 located at a first end of the display device 4 as the first display element LED 6 lights green when they are selected by the program control of the tumble dryer (not shown here).
  • the LED 10 located at a second end of the display device 4 as a second display element lights red when selected by the program control of the clothes dryer.
  • the LEDs 6 light green at a first end of the display device 4 and its immediately adjacent LED 7, the middle LED 8 yellow and at a second End of the device 4 located LED 10 and the immediately adjacent LED 9 red.
  • an acoustic encoder 16 when the outer red LED 10 is lit, an acoustic encoder 16 (see Figure 2) simultaneously outputs a signal and / or the LED 10 starts to flash.
  • the second one Indicator LED 10 is turned off the heater to prevent damage to laundry and / or the tumble dryer.
  • a clothes dryer 1 is shown in partial sectional view. This has in its upper part on a programmed control device 3, which of a
  • Operating handle 5 is adjustable and preferably contains a fuzzy processor control, not shown here.
  • the display device 4 is connected to the control device 3, as well as the temperature sensor 12 and the acoustic sensor 16.
  • the control device 3 receives from the temperature sensor 12 measurement signals and uses them not only to determine the degree of contamination of the exhaust duct 25, but also to
  • the control device 3 also controls the display device 4 and the acoustic sensor 16.
  • the tumble dryer 1 has a drum 2 which is accessible via a passage 9 from a loading door 11 and via which the laundry can be introduced into the drum 2 and removed again.
  • a process air opening 13 is arranged, which sucks in air from outside via a fan 15 and flows into a process air channel 17. From the process air channel 17, the fresh process air flows through a heater 18 to the input 21 of the drum 2. The process air passes through the drum 2 and flows at the outlet 23 through an exhaust duct 25. Behind the drum 2 in the exhaust duct 25, a temperature sensor 12 is arranged in at predetermined time intervals periodically detects the temperature of the process air and the measured value of a corresponding control device (not shown) supplies.
  • the tumble dryer 1 of this embodiment thus operates on the exhaust air principle.
  • the process air circuit can also be closed to form a forced-air tumble dryer, wherein the exhaust air from the exhaust duct 25 is guided to a condenser 29.
  • the condenser 29 is designed as a heat exchanger, in which the moist exhaust air is cooled and condenses the excessive air humidity. This air is then conveyed through the fan 15 in the process air duct 17 again.
  • the condensate can be seen in FIG 2 not shown away at a suitable location from the tumble dryer 1 or pumped into a condensate tank, from which it can be removed by hand.
  • the manifold 28 of the exhaust duct 25 and the fan 15 are reversed and connected to the respective nozzle 31 and 32 of the condenser 29.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

L'invention concerne un sèche-linge (1) doté d'un tambour (2) de séchage de linge humide au moyen d'air de traitement, d'un dispositif de chauffage (18) disposé dans un canal (17) d'amenée d'air situé en amont du tambour (2) et qui chauffe l'air de traitement et un canal (25) d'évacuation d'air situé en aval du tambour (2), ainsi que d'un dispositif de commande (3), d'une sonde de température (12) qui détermine la température de l'air de traitement et d'un dispositif d'affichage (4) qui affiche le degré d'encrassement du canal (25) d'évacuation d'air. Le dispositif d'affichage (4) et la sonde de température (12) sont reliés au dispositif de commande (3) et ce dernier est conçu pour déterminer le degré d'encrassement à partir de la température mesurée par la sonde de température (12). Le dispositif d'affichage (4) présente une première extrémité dotée d'un premier élément d'affichage (6) et une deuxième extrémité dotée d'un deuxième élément d'affichage (10), les éléments d'affichage (6, 7, 8, 9, 10) pouvant afficher plusieurs degrés d'encrassement du canal (25) d'évacuation d'air, la sonde de température (12) étant disposée dans le canal (25) d'évacuation d'air.
PCT/EP2007/060558 2006-10-09 2007-10-04 Sèche-linge doté d'un dispositif d'affichage qui affiche le dégré d'encrassement Ceased WO2008043705A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006047720.0 2006-10-09
DE102006047720A DE102006047720A1 (de) 2006-10-09 2006-10-09 Vorrichtung und Verfahren zur Anzeige des Verschmutzungszustandes eines Abluftkanals eines Wäschetrockners

Publications (1)

Publication Number Publication Date
WO2008043705A1 true WO2008043705A1 (fr) 2008-04-17

Family

ID=38925477

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PCT/EP2007/060558 Ceased WO2008043705A1 (fr) 2006-10-09 2007-10-04 Sèche-linge doté d'un dispositif d'affichage qui affiche le dégré d'encrassement

Country Status (2)

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DE (1) DE102006047720A1 (fr)
WO (1) WO2008043705A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8146265B2 (en) 2007-04-18 2012-04-03 Lg Electronics Inc. Display device of dryer
DE102008040846A1 (de) * 2008-07-29 2010-02-04 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner mit einem Wärmetauscher sowie Verfahren zu seinem Betrieb
DE102012209751B4 (de) * 2012-06-12 2024-04-25 BSH Hausgeräte GmbH Hausgerät mit einer Vorrichtung zum Schutz vor schädlichen Umwelteinflüssen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351276A1 (fr) * 1988-07-13 1990-01-17 Ciapem Procédé de détection de pannes dans un sèche-linge et sèche-linge mettant en oeuvre ce procédé
JPH04126199A (ja) * 1990-09-17 1992-04-27 Hitachi Ltd 衣類乾燥機
EP0512940A1 (fr) * 1991-05-07 1992-11-11 Nyborg Vaskerimaskiner A/S Sèche-linge
EP0889155A1 (fr) * 1997-07-02 1999-01-07 BSH Bosch und Siemens Hausgeräte GmbH Procédé pour détecter un disfonctionnement dans un sèche linge sèche linge utilisant un tel procédé
US20040006886A1 (en) * 2002-07-09 2004-01-15 Soon-Jo Lee Dryer having a filter sensing system
JP2005137503A (ja) * 2003-11-05 2005-06-02 Matsushita Electric Ind Co Ltd 衣類乾燥機

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19704213C1 (de) * 1997-02-05 1998-09-17 Miele & Cie System zur Erkennung unzulässiger Betriebszustände in einem Wäschetrockner
US5860224A (en) * 1997-06-02 1999-01-19 Larson; Eric K. Testing for blocked dryer vent
DE19755916A1 (de) * 1997-12-10 1999-06-17 Aeg Hausgeraete Gmbh Wäschetrockner
DE29824834U1 (de) * 1998-01-26 2002-11-28 BSH Bosch und Siemens Hausgeräte GmbH, 81669 München Programmgesteuertes Haushaltgerät mit einer Bedienungshandhabe
CH695060A5 (de) * 2000-05-17 2005-11-30 V Zug Ag Wäschetrockner mit Wärmepumpe.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351276A1 (fr) * 1988-07-13 1990-01-17 Ciapem Procédé de détection de pannes dans un sèche-linge et sèche-linge mettant en oeuvre ce procédé
JPH04126199A (ja) * 1990-09-17 1992-04-27 Hitachi Ltd 衣類乾燥機
EP0512940A1 (fr) * 1991-05-07 1992-11-11 Nyborg Vaskerimaskiner A/S Sèche-linge
EP0889155A1 (fr) * 1997-07-02 1999-01-07 BSH Bosch und Siemens Hausgeräte GmbH Procédé pour détecter un disfonctionnement dans un sèche linge sèche linge utilisant un tel procédé
US20040006886A1 (en) * 2002-07-09 2004-01-15 Soon-Jo Lee Dryer having a filter sensing system
JP2005137503A (ja) * 2003-11-05 2005-06-02 Matsushita Electric Ind Co Ltd 衣類乾燥機

Also Published As

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