EP2756128B1 - Seche-linge avec module de blocage du flux d'air active par la temperature - Google Patents

Seche-linge avec module de blocage du flux d'air active par la temperature Download PDF

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Publication number
EP2756128B1
EP2756128B1 EP12759096.6A EP12759096A EP2756128B1 EP 2756128 B1 EP2756128 B1 EP 2756128B1 EP 12759096 A EP12759096 A EP 12759096A EP 2756128 B1 EP2756128 B1 EP 2756128B1
Authority
EP
European Patent Office
Prior art keywords
air
laundry dryer
blocking unit
expansion material
flow blocking
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.)
Not-in-force
Application number
EP12759096.6A
Other languages
German (de)
English (en)
Other versions
EP2756128A1 (fr
Inventor
Gerhard Stegerwald
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 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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL12759096T priority Critical patent/PL2756128T3/pl
Publication of EP2756128A1 publication Critical patent/EP2756128A1/fr
Application granted granted Critical
Publication of EP2756128B1 publication Critical patent/EP2756128B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F58/20—General details of domestic laundry dryers 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
    • 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
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • 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 present invention relates to a tumble dryer, in particular household tumble dryer, comprising a drum intended for drying laundry, which is provided with at least one air duct for the air supply and / or the air discharge, which air duct can be closed by means of a temperature-activated Heilstromblockierica.
  • Such a dryer is apparent from the DE 10 2007 061 521 A1 , There is a clothes dryer described, which is equipped with a fire extinguisher.
  • This fire-extinguishing device may comprise a valve which is arranged in an air duct for conveying an air flow through a laundry drum, which valve is activatable upon release of the fire-extinguishing device for closing the air duct.
  • the present invention has for its object to provide a tumble dryer, such as in particular a household tumble dryer, in which an optionally resulting in the drum fire can not escape from the drum and is automatically deleted as possible.
  • a tumble dryer such as in particular a household tumble dryer
  • a tumble dryer according to the invention comprises a drum intended to receive laundry to be dried, which is provided with at least one air line for the air supply, the air discharge or both.
  • this is an air supply line for supplying warm, dry air into the drum and a discharge line for draining humidified and cooled air present, the sake of brevity, collectively referred to as "air lines".
  • air lines can be provided.
  • the tumble dryer according to the invention is characterized in that the air duct can be closed by means of a temperature-activated Heilstromblockierech containing an expansion material that expands so much at a temperature as caused by an emergent or emerging fire that the closure of the air line is effected.
  • expansion material is here to be understood a substance whose expansion above a certain temperature - the thermal expansion by no means must be linearly correlated with the temperature, but can only be used from reaching a certain expansion temperature - is so great that it is a closure of the Air duct can cause.
  • the tumble dryer is characterized in that the air flow blocking unit has a cavity, which is part of the air duct and in which the expansion material is located, which closes the air duct at the temperature that can be caused by a fire by expanding in a defined way, or in other words enlarging its volume.
  • the air flow blocking unit can close the air duct in a direct manner, without the aid of its own mechanical or electrical device, in a fire.
  • This embodiment is structurally simple to manufacture and works very reliable without further intervention from the outside; it thus closes the air line very reliably and safely only at the temperature caused by a fire.
  • the expansion material in the air flow blocking is arranged so that it serves as an actuator for a closure device for closing the air duct, as soon as it expands its length and / or volume upon reaching a temperature, such as by a fire is caused.
  • the expansion material can also be used in this embodiment as a triggering device or as a trigger for a closure device for closing the air line are called.
  • the air flow blocking unit has a container having the expansion material and a locking device for locking the closure device. The closure device is held locked as long as the expansion material has not yet expanded, and the locking takes place in a (first) position in which the air line is open. In other words, the air line remains open as long as the expansion material has not yet expanded and thus the closure device has not yet unlocked. The unlocking of the closure device thus takes place only when the expansion material expands, in which case the closure device closes the air line.
  • the closure device has a first plate with first air passages and a second plate with second air passages, wherein the second plate is movable relative to the first plate, in particular rotatably arranged.
  • the arrangement is such that the second air passages can be moved by an actuator from a first position in which they have a fluid connection to the first air passages, in a second position in which they have no fluid connection to the first air passages.
  • this embodiment of the invention does not require any mechanical influence from the outside and also no electrical power connection to prevent its emergence from the drum when a fire occurs, but is triggered and activated solely by the corresponding increase in temperature. It is advantageous if the actuating device in this case has a spring which acts on the second plate in its first position in the direction of the second position. In this arrangement causes the expansion material as a blocking device which prevents movement of the second plate, as long as the expansion material has not yet expanded, and allows a spring-induced movement of the second plate with the second air passages or releases when the Expanded expansion material far enough and thus cleared the way for the movement of the second plate.
  • the expansion material expands by a factor which is at least 100%, preferably at least 200%.
  • the expansion material at a temperature, as is caused in a fire a thickness which is at least twice, preferably at least three times, its thickness at room temperature.
  • a simple and inexpensive embodiment of the present invention is possible in that a fabric, a felt, a foamed material or a similar material is used as the expansion material, wherein this material or material is preferably formed from ceramic fibers, which in turn also at high temperatures are not sensitive to fire and thus do not ignite themselves.
  • the drum of the tumble dryer comprises an air inlet, which is designed so that the air flow blocking unit can be arranged in the air inlet.
  • the drum is advantageously designed such that it has a bearing plate in which this or an additional air flow blocking unit can be arranged, this air flow blocking unit then being arranged in the region of the air outlet of the drum.
  • Fig. 1 schematically shows in perspective view obliquely from above a drum 20 of a clothes dryer 10.
  • an air inlet 22 is provided in the form of a perforated disc through which air can flow into the drum 20.
  • a detail view of this air inlet 22 is in Fig. 4 shown in front view. From the Fig. 4 It can be seen in detail that the air inlet 22 comprises a plurality of small holes 23 through which air can flow from the air duct 30, which is only schematically indicated here, into the drum 20.
  • the air inlet 22 is in this case arranged in a housing, not shown, into which the air line 30 opens and in which the air inlet 22 is inserted airtight.
  • FIGS. 2 and 3 12 show sections through the two variants of the airflow blocking unit 50 along a plane containing the axis of the drum 20.
  • Fig. 2 It can be seen that in a cavity 32 which is located in the air outlet 26 in the bearing plate 24, an expansion material 70 is arranged. According to Fig. 2 The expansion material 70 occupies only a small portion of the cavity 32 - in this embodiment, less than half - so that air can flow well through the air outlet 26 through the air outlet, which is in Fig. 2 is symbolically represented by an arrow B.
  • the expansion material 70 is designed so that when it reaches a certain temperature, as it is caused by the emergence of a fire, its width or thickness or its volume expands so much that it occupies the entire cavity 32 and possibly between the expansion material 70 and the cavity 32 existing edge gaps are fired by itself. This situation is in Fig. 2 shown schematically by dashed lines. Out Fig. 2 Namely, it can be seen that the volume of the expanded expansion material 70 is considerably larger than in the unexpanded situation. As a result, the air flow through the air outlet 26 is very reliably blocked.
  • the expansion material 70 may also be provided with through-holes 72 and / or configured such that it is smaller in thickness and / or diameter than the cavity 32 in which it is located, that the expansion material 70 in the cavity 32 - possibly additionally or alternatively by the flow through the through holes 72 - can be easily flowed around or flowed through by the air flow and this does not prevent or at least not substantially at the outlet through the air outlet 26.
  • This is schematically illustrated by arrows C, which designate partial air streams.
  • the expansion material 70 in the cavity 32 upon the occurrence of a fire due to the expansion caused thereby the escape of air from the air outlet 26 automatically (ie automatically) prevents it by its thickness and / or volume increase, the air line 30 and 40, whose component is the cavity 32 and the air outlet 26, closes.
  • the expanded state in which the through holes 72 are closed is in FIG Fig. 2 shown in dashed lines.
  • the expansion material 70 acts directly through its increase in thickness or volume.
  • FIG. 5 to 9 an airflow blocking unit 60 according to a second embodiment of the tumble dryer 10 is shown.
  • This Luftstromblockiertician 60 is in an air line - ie a conduit for air supply and / or for the air discharge - installed, which is not shown in the drawing.
  • the airflow blocking unit 60 comprises a first, here shown circular, plate 67, which is arranged stationarily with respect to the tumble dryer 10. Adjacent to the first plate 67, a second plate 68, which is also shown here circular, arranged, which in turn is rotatably arranged with respect to the first plate 67. The rotation of the second plate 67 takes place about its center axis perpendicular to the surface.
  • the two plates 67 and 68 respectively have air passage holes 67a and 68a, which are in the in Fig.
  • a locking device 66 is provided in order to hold the two plates 67, 68 in this position relative to one another, ie the second plate 68 in its first position.
  • the locking device 66 comprises a bolt guide housing 61, in which a parallel to the axis of the plates 67, 68 displaceable stop pin 64 is arranged.
  • An angled abutment plate 63 fixedly connected to the second plate 68 (see also FIG Fig.
  • an actuator 69 is provided, which is designed here as a spring which acts on the abutment portion 63 a so that it is pressed against the stop pin 64, thereby the second plate 68 is fixed relative to the first plate 67. In this position, the actuator 69 also assumes the function of a locking device. From the bolt guide housing 61 and the stopper bolt away extends a here cylindrically illustrated container 62, whose function and configuration will be explained below. In Fig. 5 an arrow D represents the plates 67, 68 passing air flow symbolically.
  • the container 62, the pin guide housing 61 and the displaceable stop pin 64 are shown cut open.
  • an expansion material 70 which is expanding felt, expanding fabric or a corresponding expanding fibrous material.
  • the expansion material could also be trapped water, another fluid or a solid that increases its volume or its length or thickness strong enough under heat to perform the function as a triggering device for closing the air duct.
  • the expansion material 70 occupies only the space provided by the container 62.
  • the abutment plate 63 is designed such that it has a recess 63b between the abutment section 63a and the second plate 68, which is configured in this way is that the abutment plate 63 and its abutment portion 63a in the in Fig. 9 shown position of the stop pin 64 is no longer applied to the stop pin 64, but let the stopper bolt 64 pass.
  • the pressing force of the abutment plate 63 acting as spring actuator 69 causes the second plate 68 to rotate to a second position, as shown in FIG Fig. 8 in the counterclockwise direction, which is represented by an arrow F.
  • the air passage holes 67a of the first plate 67 are no longer in alignment with the air passage holes 68a of the second plate 68, thereby blocking the flow of air through the plates 67, 68.
  • the blocked airflow is in Fig. 8 symbolically represented by a circle G.
  • the plates 67, 68 thus form a closure mechanism 65.
  • the air line can be closed indirectly by the increase in volume or length of the expansion material 70.
  • the expansion material 70 serves as a trigger for the closure mechanism 65 comprising the plates 67, 68.
  • the invention described above is not limited to the two embodiments described in detail.
  • the various variants of the temperature-activated airflow blocking unit described above can be used both in condensation dryers and in exhaust air dryers and each ensure a reliable and automatically acting, outside no influence requiring closure of the air duct or the air ducts in the event of a fire. Since no connection to the power grid or the provision of a battery, etc., is required for operation or maintenance of the operational readiness of the air flow blocking unit, the reliability of the air flow blocking unit is also very high.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (10)

  1. Sèche-linge (10), notamment sèche-linge à usage domestique, comprenant un tambour (20) destiné au linge à sécher, lequel tambour est muni d'au moins une conduite d'air (30 ; 40) pour l'alimentation en air et/ou l'évacuation d'air, laquelle conduite d'air (30 ; 40) peut être fermée au moyen d'une unité de blocage de courant d'air (50 ; 60) activée par température, caractérisé en ce que l'unité de blocage de courant d'air (50 ; 60) contient une matière d'expansion (70) qui, à une température provoquée par un feu, se dilate de manière à ce que la fermeture de la conduite d'air (30 ; 40) soit provoquée.
  2. Sèche-linge (10) selon la revendication 1, caractérisé en ce que l'unité de blocage de courant d'air (50) comprend un espace creux (32) qui fait partie de la conduite d'air (30) et est disposé dans la matière d'expansion (70) qui, à la température provoquée par un feu, ferme la conduite d'air (30 ; 40) en raison de l'expansion de volume.
  3. Sèche-linge (10) selon la revendication 2, caractérisé en ce que la matière d'expansion (70), tant qu'elle n'a pas encore subi d'expansion de volume, présente des trous de passage (72) qui sont fermés lors de l'expansion de volume suite à la température provoquée par un feu, sur quoi la conduite d'air (30) est fermée.
  4. Sèche-linge (10) selon la revendication 1, caractérisé en ce que la matière d'expansion (70) dans l'unité de blocage de courant d'air (60) est disposée de manière à ce que, lors de l'expansion en longueur et/ou en volume qu'elle subit en raison de la température provoquée par un feu, elle serve de dispositif d'actionnement (69) pour un dispositif de fermeture (65) destiné à fermer la conduite d'air (30 ; 40).
  5. Sèche-linge (10) selon la revendication 4, caractérisé en ce que l'unité de blocage de courant d'air (50) présente un réservoir (62) dans lequel est disposée la matière d'expansion (70) ainsi qu'un dispositif de verrouillage (66) pour le verrouillage du dispositif de fermeture (65), tant que la matière d'expansion (70) n'a pas encore subi d'expansion, dans une première position dans laquelle la conduite d'air (40) est ouverte.
  6. Sèche-linge (10) selon la revendication 4 ou 5, caractérisé en ce que le dispositif de fermeture (65) comprend une première plaque (67) munie de premiers passages d'air (67a) ainsi qu'une deuxième plaque (68) munie de deuxièmes passages d'air (68a), disposée de manière avoisinante à la première plaque (67), de manière déplaçable, de préférence de manière rotative, par rapport à la première plaque (67), les deuxièmes passages d'air (68a) étant déplaçables au moyen du dispositif d'actionnement (69) d'une première position, dans laquelle ils présentent une liaison fluidique vers les premiers passages d'air (67a), dans une deuxième position, dans laquelle ils ne présentent pas de liaison fluidique vers les premiers passages d'air (67a) et dans laquelle la conduite d'air (40) est ainsi fermée.
  7. Sèche-linge (10) selon la revendication 6, caractérisé en ce que le dispositif d'actionnement (69) présente un ressort qui met la deuxième plaque (68) de sa première position dans la deuxième position.
  8. Sèche-linge (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que la matière d'expansion (70), à la température provoquée par un feu, présente une épaisseur qui est au moins deux fois, de préférence au moins trois fois plus grande que l'épaisseur à température ambiante.
  9. Sèche-linge (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que la matière d'expansion (70) est un tissu, un feutre ou un tissu similaire, notamment constitué de fibres céramiques.
  10. Sèche-linge (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que le tambour (20) présente :
    une entrée d'air (22) dans laquelle est disposée l'unité de blocage de courant d'air (50 ; 60), et/ou
    un flasque (24) dans lequel est disposée l'unité de blocage de courant d'air (50 ; 60).
EP12759096.6A 2011-09-16 2012-09-11 Seche-linge avec module de blocage du flux d'air active par la temperature Not-in-force EP2756128B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12759096T PL2756128T3 (pl) 2011-09-16 2012-09-11 Suszarka do prania z aktywowanym temperaturą zespołem blokującym strumień powietrza

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011082861A DE102011082861B3 (de) 2011-09-16 2011-09-16 Wäschetrockner mit temperaturaktivierter Luftstromblockiereinheit
PCT/EP2012/067707 WO2013037756A1 (fr) 2011-09-16 2012-09-11 Sèche-linge avec module de blocage du flux d'air activé par la température

Publications (2)

Publication Number Publication Date
EP2756128A1 EP2756128A1 (fr) 2014-07-23
EP2756128B1 true EP2756128B1 (fr) 2015-07-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12759096.6A Not-in-force EP2756128B1 (fr) 2011-09-16 2012-09-11 Seche-linge avec module de blocage du flux d'air active par la temperature

Country Status (5)

Country Link
US (1) US10551123B2 (fr)
EP (1) EP2756128B1 (fr)
DE (1) DE102011082861B3 (fr)
PL (1) PL2756128T3 (fr)
WO (1) WO2013037756A1 (fr)

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KR20140106909A (ko) * 2013-02-27 2014-09-04 엘지전자 주식회사 의류처리장치
US9562314B2 (en) 2013-02-27 2017-02-07 Lg Electronics Inc. Laundry treating apparatus
US20150168064A1 (en) * 2013-12-17 2015-06-18 Electrolux Appliances Aktiebolag Laundry dryer with emergency closing ventilation system
US9297493B2 (en) * 2014-05-13 2016-03-29 Electrolux Appliances Aktiebolag Laundry dryer with fire-resistant shielding
DE102016200308A1 (de) * 2016-01-13 2017-07-13 BSH Hausgeräte GmbH Haushaltsgerät mit Drosselung einer Lüftereinheit
KR20180098044A (ko) * 2017-02-24 2018-09-03 엘지전자 주식회사 세탁물 처리기기 및 그 제어방법

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Also Published As

Publication number Publication date
EP2756128A1 (fr) 2014-07-23
DE102011082861B3 (de) 2013-01-03
WO2013037756A1 (fr) 2013-03-21
US10551123B2 (en) 2020-02-04
PL2756128T3 (pl) 2015-12-31
US20140338213A1 (en) 2014-11-20

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