EP1682715B1 - Procede pour secher du linge et seche-linge pour mettre en oeuvre le procede - Google Patents

Procede pour secher du linge et seche-linge pour mettre en oeuvre le procede Download PDF

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Publication number
EP1682715B1
EP1682715B1 EP04790664A EP04790664A EP1682715B1 EP 1682715 B1 EP1682715 B1 EP 1682715B1 EP 04790664 A EP04790664 A EP 04790664A EP 04790664 A EP04790664 A EP 04790664A EP 1682715 B1 EP1682715 B1 EP 1682715B1
Authority
EP
European Patent Office
Prior art keywords
air
drying
laundry
drying chamber
disposed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04790664A
Other languages
German (de)
English (en)
Other versions
EP1682715A1 (fr
Inventor
Hans-Werner Böttcher
Eckhard Nave
Holger Wagner
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP1682715A1 publication Critical patent/EP1682715A1/fr
Application granted granted Critical
Publication of EP1682715B1 publication Critical patent/EP1682715B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D06F58/50—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
    • D06F2103/28—Air properties
    • D06F2103/30—Pressure
    • 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
    • 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
    • D06F2105/32—Air flow control means
    • 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
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/26—Condition of the drying air, e.g. air humidity or temperature

Definitions

  • the invention relates to a method for drying laundry and a tumble dryer for carrying out the method with a drying chamber and a process air guide, in which a blower for conveying the drying air through the drying chamber and a heater are arranged, wherein the process air duct formed with a fresh air supply and an exhaust air discharge and wherein in the process air duct means for separating the dry air flow in an exhaust air portion and a recirculation portion are arranged, wherein the clothes dryer has sensors for detecting process parameters and depending on the detected parameters, a control of the means for separating the dry air flow for a change in the exhaust air / recirculated air he follows.
  • Such a method is known from DE 22 20 425 A1 for a tumble dryer with a water-cooled condenser known.
  • the dry air flow is guided through the process air duct with the blower, the heater and the water-cooled condenser and through the drying chamber.
  • the process air channel is formed with a fresh air supply and an exhaust air duct.
  • the process air duct flaps on which open or close the fresh air opening and the exhaust opening completely or partially.
  • the dry air In a first drying section, in which the laundry is still wet or relatively moist, the dry air is conducted in a closed circuit. In this first drying section, the flaps are closed.
  • the tumble dryer can be operated after reaching a predetermined degree of dryness of the laundry in a partially open circuit.
  • part of the dry air is recirculated as recirculated air portion back into the drying chamber and a part as exhaust air from the unit out.
  • the flaps As a process parameter for the control of the flaps, the residual moisture content in the laundry is evaluated.
  • the water-cooled condenser remains switched on and the flaps partially release their openings to the fresh air inlet or exhaust air outlet.
  • it is provided to switch off the condenser and to operate the tumble dryer with the fresh air supply open and the exhaust air opening open as an exhaust air dryer.
  • a tumble dryer (Miele T 6251) is known with a constant set exhaust air / recirculation, in which over the entire drying process, a portion of the dry air is recirculated as recirculated air back into the drying chamber.
  • This dryer has as a drying chamber a rotatably mounted drying drum with a drum volume of 250 liters.
  • the drying drum is followed by a process air guide section with a filter device, which is referred to as a filter chamber.
  • the fan area is arranged with the blower.
  • a guide plate is arranged in the flow direction, which divides the air flow into the exhaust air portion and the recirculated air proportion.
  • the exhaust air component is led out of the unit via the exhaust air opening.
  • the proportion of recirculated air is mixed with fresh air, which is sucked due to the negative pressure in the drying drum on the fresh air opening.
  • Fresh air and recirculated air are heated again via the heater and routed again into the drying drum.
  • the still wet, heavy laundry is optimally moved in the air stream in the drying drum.
  • the laundry almost completely fills the drying drum. Due to the arrangement and design and the dimensioning of the blower for a large-volume drying drum, the laundry items can be sucked at the air outlet of the drying drum.
  • the laundry When drying quilts, pillows and duvets, the laundry can be sucked before the dry air outlet of the drying drum due to the negative pressure and at an advanced degree of dry laundry filling. This problem can also occur when drying air-impermeable textiles z. B. outdoor clothing occur. By adhering to the suction textiles, the air flow is interrupted by the drying drum and the laundry in the drum overheated or not dried gently.
  • the invention thus presents the problem of avoiding damage to the laundry, which may occur due to an interruption of the drying air flow in the drying drum, and to achieve an optimum drying result.
  • the achievable with the present invention consist in particular in that an interruption of the dry air flow through textiles that partially or completely close the airway, can be detected immediately by a direct monitoring of the pressure conditions or the pressure profile in the drying chamber. Depending on the detected Values the reduced air volume of the dry air is reduced or set to zero and the drying process continues with reduced volume flow. This reduces the suction on the textiles and the airway is released again.
  • it is provided to reduce or switch off the heating power as a function of the reduced volume flow through the drying drum.
  • the advantages achievable with the invention also consist in particular in that the pressure sensor of the drying chamber is assigned directly.
  • the pressure sensor is advantageously arranged in the region of the air inlet opening to the drying chamber, which can be reacted directly to the present in the drying chamber pressure conditions.
  • the drying air volume flow in the drying chamber is reduced by activating a blocking flap arranged in the process air guide for the circulating air path of the circulated air portion in the dry air.
  • the air circulation can be completely or partially closed.
  • the suction effect on the adhering to the suction port or the air outlet openings textiles are reduced and these fall back into the drying chamber. It has proven to be advantageous to continue the drying process thereafter with the reduced dry air volume flow in order to avoid a renewed interruption of the drying air flow through the textiles.
  • the drying chamber of a tumble dryer is designed as a rotatably mounted drying drum (1).
  • the air outlet opening (2) of the drying drum (1) which is arranged in the region of the front-side filling opening (3) for the laundry, is a process air guiding section, which can be referred to as filter chamber (4), connected downstream with a filter device (5).
  • the dry air is conveyed by means of blower (6) via the filter device (5) from the filter chamber (4) into the blower area (7) with the exhaust air / circulation air distribution.
  • the fan area (7) with the exhaust air / circulating air distribution is compared to the filter chamber (4) by a partition wall (8) with one to the rotating Drying drum (1) directed sealing assembly (9) completed.
  • the dry air is passed via a in the partition (8) formed inlet nozzle (10) axially to the blower (6).
  • the fan area (7) with the means (guide plate 11, flap 14) for the separation of the dry air flow into an exhaust air portion and a recirculated air portion is shown schematically in front view.
  • the guide plate (11) On the pressure side of the blower (6), the guide plate (11) is arranged, which divides the radially emerging air flow into the exhaust air portion and the recirculated air.
  • the guide plate (11) is arranged approximately parallel to the flow direction of the exiting dry air.
  • the exhaust air component is led out of the device via the exhaust air opening (12).
  • the proportion of recirculated air is conducted into the circulating air path (13), which can be completely or partially closed by means of a flap (14) shown in more detail in FIG.
  • the proportion of recirculated air is mixed with fresh air, which is sucked due to the negative pressure in the drying drum (1) via the fresh air opening (15) on the back of the device.
  • Fresh air content and recirculated air content are heated again via the arranged in the Bankkanalabintroductory (16) of the dry air guide heater (17) and re-introduced into the drying drum (1).
  • a further sealing arrangement (18) is arranged between the heating channel section (16) and rotating drying drum (1).
  • a pressure sensor (20) which detects the pressure profile in the drying drum (1) is arranged in the air inlet region (19) of the drying air to the drying drum (1).
  • the pressure profile is evaluated by the program control (21) of the tumble dryer for controlling the flap (14) arranged in the circulating air path (13). If it comes in the course of the drying process that laundry items (W) at the air outlet (2) of the drying drum (1) are sucked, the drying air flow in the drying drum (1) is interrupted. Depending on the deviation from the permissible pressure value or pressure profile in the drying drum (1), a control of the flap (14) arranged in the circulating air path (13) takes place. In this case, the recirculated air portion of the dry air is reduced or set equal to zero by the flap (14) is completely or partially closed by an adjusting device (22). The drying process is continued with reduced volume flow through the drying drum (1). When the flap (14) is completely closed, the volume flow of the dry air is reduced to the fixed proportion of the exhaust air volume flow predetermined by the arrangement of the guide plate (11). Depending on the reduced dry air flow, the heating power can be reduced or switched off completely.

Landscapes

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

Claims (5)

  1. Procédé pour sécher du linge dans un sèche-linge avec un dispositif de commande de programmes, un compartiment de séchage et un dispositif de guidage d'air de processus, dans lequel une soufflante pour le transport de l'air de séchage à travers le compartiment de séchage ainsi qu'un dispositif de séchage sont disposés, le dispositif de guidage d'air de processus étant réalisé avec une alimentation en air frais ainsi qu'avec une évacuation d'air vicié et des moyens de séparation du flux d'air de séchage en une part d'air vicié et une part d'air en circulation étant disposés dans le dispositif de guidage d'air de processus, le sèche-linge comportant des capteurs servant à détecter des paramètres de processus et un amorçage des moyens de séparation du flux d'air de séchage ayant lieu pour modifier la part d'air vicié/d'air en circulation en fonction des paramètres détectés,
    caractérisé en ce
    qu'un capteur (20) détecte la pression dans le flux d'air de processus dans la zone d'entrée d'air (19) de l'air de séchage dans le compartiment de séchage (1) et en ce qu'est évaluée la valeur de pression ou l'évolution de la pression et en ce que se produit, en fonction de celles-ci, un amorçage des moyens (14, 22) de séparation du flux d'air de séchage, de telle manière que la part d'air en circulation est réduite ou supprimée et que le processus de séchage se poursuit avec un courant volumique réduit à travers le compartiment de séchage (1).
  2. Procédé pour sécher du linge selon la revendication 1,
    caractérisé en ce que
    la puissance de chauffage est réduite en fonction du courant volumique réduit de l'air de séchage.
  3. Sèche-linge pour mettre en oeuvre le procédé selon la revendication 1 avec un dispositif de commande de programmes, un compartiment de séchage et un dispositif de guidage d'air de processus dans lequel une soufflante pour le transport de l'air de séchage à travers le compartiment de séchage ainsi qu'un dispositif de séchage sont disposés, le dispositif de guidage d'air de processus étant réalisé avec une alimentation en air frais ainsi qu'une évacuation d'air vicié et des moyens de séparation du flux d'air de séchage en une part d'air vicié et une part d'air en circulation étant disposés dans le dispositif de guidage d'air de processus, le sèche-linge comportant des capteurs servant à détecter des paramètres de processus et un amorçage des moyens de séparation du flux d'air de séchage ayant lieu pour modifier la part d'air vicié/d'air en circulation,en fonction des paramètres détectés,
    caractérisé en ce
    qu'un capteur de pression (20), par le biais duquel la pression ou l'évolution de la pression dans le compartiment de séchage (1) est détectée, est disposé dans la zone d'entrée d'air (19) de l'air de séchage dans le compartiment de séchage (1) et en ce qu'un clapet d'arrêt (14) disposé dans le canal d'air de processus (7) ferme entièrement ou partiellement le passage d'air en circulation pour la part d'air en circulation de l'air de séchage, en fonction de la valeur de pression ou de l'évolution de pression détectée.
  4. Sèche-linge selon la revendication 3,
    caractérisé en ce que
    le capteur de pression (20) est disposé dans l'interstice situé entre la section de canal de chauffage fixe (16) et le tambour de séchage rotatif (1).
  5. Sèche-linge selon la revendication 4,
    caractérisé en ce que
    le capteur de pression (20) est disposé dans la zone d'entrée d'air (19) de l'air de séchage dans le compartiment de séchage (1).
EP04790664A 2003-10-23 2004-10-20 Procede pour secher du linge et seche-linge pour mettre en oeuvre le procede Expired - Lifetime EP1682715B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10349712A DE10349712B4 (de) 2003-10-23 2003-10-23 Verfahren zum Trocknen von Wäsche und Wäschetrockner zur Durchführung des Verfahrens
PCT/EP2004/011856 WO2005040483A1 (fr) 2003-10-23 2004-10-20 Procede pour secher du linge et seche-linge pour mettre en oeuvre le procede

Publications (2)

Publication Number Publication Date
EP1682715A1 EP1682715A1 (fr) 2006-07-26
EP1682715B1 true EP1682715B1 (fr) 2007-07-11

Family

ID=34485007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04790664A Expired - Lifetime EP1682715B1 (fr) 2003-10-23 2004-10-20 Procede pour secher du linge et seche-linge pour mettre en oeuvre le procede

Country Status (5)

Country Link
US (1) US20070039198A1 (fr)
EP (1) EP1682715B1 (fr)
AT (1) ATE366840T1 (fr)
DE (2) DE10349712B4 (fr)
WO (1) WO2005040483A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3696313A1 (fr) 2019-02-15 2020-08-19 Miele & Cie. KG Appareil de traitement du linge, de préférence sèche-linge
EP3854927A1 (fr) 2020-01-23 2021-07-28 Miele & Cie. KG Séchoirs à linge
DE102020101588A1 (de) 2020-01-23 2021-07-29 Miele & Cie. Kg Wäschetrockner

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3696313A1 (fr) 2019-02-15 2020-08-19 Miele & Cie. KG Appareil de traitement du linge, de préférence sèche-linge
EP3854927A1 (fr) 2020-01-23 2021-07-28 Miele & Cie. KG Séchoirs à linge
DE102020101597A1 (de) 2020-01-23 2021-07-29 Miele & Cie. Kg Wäschetrockner
DE102020101588A1 (de) 2020-01-23 2021-07-29 Miele & Cie. Kg Wäschetrockner

Also Published As

Publication number Publication date
EP1682715A1 (fr) 2006-07-26
ATE366840T1 (de) 2007-08-15
DE10349712A1 (de) 2005-06-09
US20070039198A1 (en) 2007-02-22
WO2005040483A1 (fr) 2005-05-06
DE10349712B4 (de) 2007-03-01
DE502004004319D1 (de) 2007-08-23

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