EP2155949B1 - Appareil électroménager destiné à l'entretien du linge, en particulier sèche-linge - Google Patents

Appareil électroménager destiné à l'entretien du linge, en particulier sèche-linge Download PDF

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Publication number
EP2155949B1
EP2155949B1 EP08759587A EP08759587A EP2155949B1 EP 2155949 B1 EP2155949 B1 EP 2155949B1 EP 08759587 A EP08759587 A EP 08759587A EP 08759587 A EP08759587 A EP 08759587A EP 2155949 B1 EP2155949 B1 EP 2155949B1
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EP
European Patent Office
Prior art keywords
domestic appliance
appliance according
constriction
liquid
turbulence
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.)
Active
Application number
EP08759587A
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German (de)
English (en)
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EP2155949A1 (fr
Inventor
Harald MOSCHÜTZ
Andreas Stolze
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
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Publication of EP2155949A1 publication Critical patent/EP2155949A1/fr
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Publication of EP2155949B1 publication Critical patent/EP2155949B1/fr
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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 
    • D06F58/22—Lint collecting arrangements
    • 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 
    • D06F58/24—Condensing arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation

Definitions

  • the invention relates to a domestic appliance for the care of laundry items, in particular a washer-dryer.
  • From the EP 0 636 732 B1 is a set up for drying washing machine with a condenser, which condenser consists of a substantially bottom-to-top with moist process air flow through the hollow body and is flushed for cooling purposes via a switchable valve in the inlet with tap water.
  • the inlet is dimensioned for a water flow which is suitable for flushing the hollow body and can be operated intermittently for supplying cooling water.
  • the DE 195 22 307 C2 arranged for drying washing machine with a condenser, which consists of a substantially bottom-up with moist process air flowed through the hollow body and is rinsed with cooling water via a switchable valve in the guided at the upper portion of the hollow body inlet with tap water.
  • the tap water runs as cooling water partly from the inner walls of the hollow body and is discharged via a lye drain system.
  • the hollow body has in the inlet region of the process air to at least approximately horizontal spoiler edge, which is suitable to keep the run-down cooling water under the action of the counter-flowing process air by almost cylindrical swirling from unimpeded drainage.
  • lint entrained in the process air stream can thereby also be washed out.
  • Tumble dryers and also washer dryers tend to pollute the airways due to leaching during prolonged use without maintenance. This leaching can lead to the loss of function of the dryer.
  • This dryer are known in which lint filters are used.
  • dryers are also known in which water cooling is provided, it also being possible to filter lint by the cooling water.
  • a domestic appliance for the care of laundry includes a dryer section, which is not water-cooled but air-cooled.
  • This dryer part which can be cooled by cooling air, comprises a condenser which has a process air which essentially comprises from bottom to top with moist and lint and hollow body through which condensate liquid can flow from top to bottom.
  • the condenser has a constriction narrowing the flow cross-section, which is designed to retain condensate liquid running down on inner walls of the hollow body under the effect of the countercurrent process air by approximately roller-shaped swirling of the condensate liquid, whereby the interaction between the swirling and the flowing Process air is formed a lint filter.
  • the constriction is circumferential and annular.
  • This symmetrical design ensures a particularly effective vortex formation of the condensate liquid and a local increase in the speed of the process air. Due to the annular configuration of the constriction, a particularly intensive contact of the process air with the condensate liquid can be achieved, thereby ensuring particularly effective lint filtering.
  • the bottleneck is formed at an input of the capacitor.
  • the cross-sectional reduction takes place directly at the entrance of the heat exchanger, where the process air is deflected on the one hand and distributed on the other hand from a round cross-section in the flat heat exchanger tubes. In this case, local flow areas with sufficient flow velocities in the process air virtually occur spontaneously.
  • the constriction may preferably also be formed in the interior of the condenser, in particular in the hollow body.
  • roller-shaped turbulence can be generated permanently during a drying process of the household appliance. This means that a permanent lint filtering is given and the turbulence does not build up alternately and then collapse again.
  • the countercurrent flows of the condensate liquid and the process air are preferably designed such that equilibrium is established between the condensate liquid flowing from above into the cylindrical turbulence and the condensate liquid flowing down from the cylindrical turbulence.
  • the turbulence thus takes place permanently largely by itself. By establishing a pressure difference across the water vortex, this equilibrium can be generated and maintained.
  • the height of the roller-shaped turbulence is preferably about 10 mm, which is generated by the pressure difference across the water vortex. This height ensures effective lint filtering.
  • the cylindrical turbulence has in the equilibrium state between inflow and outflow of condensate liquid amount of between 25 ml and 100 ml, in particular about 50 ml.
  • the amount enclosed in the water vortex should neither be too high nor too low. If the amount is too high, the flow resistance of the hollow body is increased too much and the heat exchanger surface is reduced too much. If the height is too low, the effectiveness of lint filtering will also decrease.
  • the resulting compromise is based on a completely different basis than the one who in the DE 195 22 307 C2 is to produce the optimization of the interaction between the cooling water and the process air.
  • the constriction preferably has an inner diameter which is between 80% and 95%, in particular about 90%, of the inner diameter which the process air guide, in particular the condenser of the domestic appliance has adjacent to this constriction.
  • a liquid collecting device is preferably arranged upstream of the condenser in which liquid can be collected from a preceding laundry care process and which can be introduced into the condenser to form the vortex at the beginning of a subsequent laundry care process.
  • the liquid collection device may be a bag, which in particular has at least one fold of an existing bellows.
  • the water obtained from a preceding washing or drying process, in particular during a rinsing or spinning process can be stored here and entered into the heat exchanger or condenser at the start of the subsequent drying process, in particular when the process air stream is put into operation. As a result, the sufficient and required turbulence for lint filtering can be generated right from the start.
  • the course of the circulated in the turbulence condensate is dependent on an actively controlled reduction of the counterforce generated by the process air flow.
  • This can be done by changing the flow velocity of the process air and / or the air mass flowing in the process air.
  • the fan which generates the process air flow, switched slower running or partially completely disabled.
  • the process air flow can thus be reduced not only in its flow velocity and / or its air mass, but also completely deactivated.
  • rinsing liquid can be fed into the interior of the hollow body.
  • an external water connection can be provided, via which the rinsing liquid can be conducted into the hollow body.
  • the rinsing liquid may also be the liquid contained in the liquid collecting device.
  • rinsing liquid can be supplied at the beginning of a drying process and / or at the end of a drying process.
  • the amount of condensate liquid may not be sufficient, in particular at the start of drying or at the end of drying, in order to be able to generate a fluid vortex in the region of the constriction.
  • the supply of rinsing fluid vortex formation By possibly at specific times of the drying process for relatively short periods compared to the duration of a drying process and moreover in very defined and metered amounts of rinsing liquid can be supplied, the supplied required amount of liquid can still be minimized. Also, this freedom of maintenance is not affected.
  • the amount of rinsing liquid to be supplied can be supplied additionally or instead as a function of a specific phase of the drying process as a function of a condensate liquid currently present. This can be monitored for example by a suitable sensor.
  • a sensor for monitoring the vortex formation of the liquid is arranged in the region of the constriction, which sensor is connected to a control unit for controlling the rinsing liquid addition.
  • the sensor may be a temperature sensor or a moisture sensor. It is preferred if this sensor is arranged on the outside of the hollow body in the region of the constriction.
  • the flushing fluid which can be supplied externally via a water connection can also be used to clean the condenser and the entire airways after each drying and also after each wash cycle.
  • the hollow body is formed so that it has on both sides of the constriction an inner diameter which is greater than the inner diameter of the constriction.
  • the household appliance is designed as a washer-dryer.
  • the schematic figure shows an air-cooled and thus not water-cooled dryer part 1 of a washer dryer.
  • the dryer part 1 comprises a condenser 2 with a hollow body 2 which is concretely a heat exchanger tube 2 of a plurality of such heat exchanger tubes 2 in the condenser 2.
  • a condensate liquid 22 accumulating during the drying process flows from top to bottom on an inner side 21 in the hollow body 2.
  • a process air P whose flow direction is defined by a blower, not shown, which is coupled to the hollow body 2.
  • cooling air K passes the hollow body 2 to remove heat from the process air P and to cause entrained water vapor to condense. Since the inner side 21 is the coolest point in the hollow body 2, this condensation takes place there in the first place.
  • Means for driving and guiding the cooling air K along the hollow body 2 including a fan and a duct system, as known per se, not shown here.
  • the process air P flows from a supply air opening 26, which simultaneously represents the drainage opening for the condensate liquid 22, via a constriction 24 of the hollow body 2 to a fan connection opening 27.
  • the constriction 24 is arranged inside the condenser. It can preferably also be provided that the constriction 24 in the flow direction of the process air P at the supply air opening 26 of the capacitor, in particular at the entrance of the hollow body 2, is formed.
  • the constriction 24 is formed so that it reduces the flow cross-section in the hollow body 2.
  • the inner diameter of the hollow body 2 are larger than the inner diameter d at this constriction 24, where it is important that, considered in the direction of the process air P, the inner diameter of the hollow body 2 expands beyond the constriction 24.
  • the constriction 24 is formed circumferentially, and the turbulence 23 is also substantially an annular structure.
  • a sensor 3 is arranged in the region of the constriction 24. This may be a temperature sensor 3 or a humidity sensor 3, which is electrically connected to a control unit 4.
  • the control unit 4 is further connected to a valve 5, which is arranged in a supply channel 6. Via the supply channel 6, external rinsing liquid can be conducted into the interior of the hollow body 2.
  • the rinsing liquid can originate from a liquid collecting device 7, which is preferably arranged in the process air guide of the washer-dryer in the flow direction of the process air P in front of the condenser to be flowed through.
  • the downflowing condensate liquid 22 impinges on the constriction 24 to the process air P accelerated there, whereby parts of the condensate liquid 22 are torn up and swirled above the constriction 24 to form a kind of annular roller. This accumulates more and more condensate liquid 22 until the weight force generated by the mass of the circulated condensate liquid 22 is greater than the counterforce generated by the flow of process air P.
  • the then running over the bottleneck water or the condensate liquid 22 is then passed in a lye drain system, not shown, up to a tub.
  • the opposing force generated by the process air flow P is changed defined. It can be provided in particular that the fan is made weaker, whereby the process air flow P is changed.
  • the turbulence 23 is substantially permanently formed during the drying process, and a balance is established between the condensate liquid 22 running from above into the turbulence 23 and flowing downwards from the turbulence. In the turbulence is about an amount of 50 ml of condensate liquid 22 included.
  • This refinement of the domestic appliance makes it possible to provide an air-cooled dryer part, in which the lint filtering is made possible without maintenance and, moreover, considerable water savings can be made possible.
  • the lint filtering can generally be made possible solely by the condensate liquid and, if necessary, at best requires a small additional amount of rinsing liquid.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Detergent Compositions (AREA)
  • Drying Of Solid Materials (AREA)

Claims (17)

  1. Appareil ménager destiné à l'entretien du linge avec une partie séchante (1) refroidissable par air de refroidissement (K) et comprenant un condenseur comportant un corps creux (2) à travers lequel de l'air de processus (P) humide et comprenant des peluches peut circuler essentiellement du bas vers le haut et à travers lequel du liquide condensé (22) peut circuler du haut vers le bas, ledit condenseur présentant un étranglement (24) conçu de manière à empêcher le liquide condensé (22) coulant le long des parois internes (21) du corps creux (2) de s'écouler librement grâce à l'action de l'air de processus (P) passant dans le sens opposé par un tourbillonnement approximativement de forme cylindrique (23), un filtrage de peluches étant formé au moyen de l'interaction entre le tourbillonnement (23) et l'air de processus passant (P).
  2. Appareil ménager selon la revendication 1, dans lequel l'étranglement (24) fait le tour et est de forme annulaire.
  3. Appareil ménager selon la revendication 1 ou 2, dans lequel l'étranglement (24) est formé sur une entrée (26) du condenseur.
  4. Appareil ménager selon la revendication 1 ou 2, dans lequel l'étranglement (24) est formé à l'intérieur du condenseur, en particulier dans le corps creux (2).
  5. Appareil ménager selon l'une des revendications précédentes, dans lequel les flux antagonistes du liquide condensé (22) et de l'air de processus (P) sont tels qu'un équilibre s'établit entre le liquide condensé (22) affluant par le haut dans le tourbillonnement de forme cylindrique (23) et le liquide condensé (22) s'écoulant du tourbillonnement de forme cylindrique (23) vers le bas.
  6. Appareil ménager selon la revendication 5, dans lequel le tourbillonnement de forme cylindrique (23) peut être généré de manière durable pendant un processus de séchage de l'appareil ménager.
  7. Appareil ménager selon l'une des revendications précédentes, dans lequel la hauteur du tourbillonnement de forme cylindrique (23) est de l'ordre de 10 mm.
  8. Appareil ménager selon l'une des revendications précédentes, dans lequel le tourbillonnement de forme cylindrique (23), à l'état d'équilibre entre afflux et écoulement de liquide condensé (22), présente une quantité de liquide comprise entre 25 ml et 100 ml, en particulier d'environ 50 ml.
  9. Appareil ménager selon l'une des revendications précédentes, dans lequel l'étranglement (24) présente un diamètre intérieur (d) compris entre 80 % et 95 %, en particulier de 90 %, du diamètre intérieur que présente le dispositif de guidage d'air de processus de l'appareil ménager au voisinage dudit étranglement (24).
  10. Appareil ménager selon l'une des revendications précédentes, dans lequel un dispositif collecteur de liquide (7) est disposé dans ledit dispositif de guidage d'air de processus de l'appareil ménager en amont du condenseur selon le sens du flux de l'air de processus (P), dans lequel du liquide issu d'un processus d'entretien du linge précédent peut être collecté pour être introduit dans le condenseur au début d'un processus d'entretien du linge suivant pour former le tourbillonnement (23).
  11. Appareil ménager selon l'une des revendications précédentes, dans lequel l'écoulement du liquide condensé (22) du tourbillonnement (23) est dépendant d'une réduction commandée activement de la force antagoniste générée par l'air de processus passant (P) contre le poids du liquide condensé (22).
  12. Appareil ménager selon l'une des revendications précédentes, dans lequel du liquide de rinçage peut être introduit à l'intérieur du corps creux (2).
  13. Appareil ménager selon la revendication 12, dans lequel du liquide de rinçage peut être introduit au début d'un processus de séchage et/ou à la fin d'un processus de séchage.
  14. Appareil ménager selon la revendication 12 ou 13, dans lequel la quantité de liquide de rinçage à introduire dépend du liquide condensé (22) présent.
  15. Appareil ménager selon l'une des revendications précédentes, dans lequel un capteur (3) destiné à contrôler la formation de tourbillonement du liquide est disposé dans la zone de l'étranglement (24), lequel capteur est relié à une unité de commande (4) destinée à commander l'addition du liquide de rinçage.
  16. Appareil ménager selon l'une des revendications précédentes, dans lequel, de part et d'autre de l'étranglement (24), le corps creux (2) est élargi à un diamètre plus grand que ledit étranglement (24).
  17. Appareil ménager selon l'une des revendications précédentes, lequel est conçu sous forme de lave-linge séchant.
EP08759587A 2007-05-25 2008-05-14 Appareil électroménager destiné à l'entretien du linge, en particulier sèche-linge Active EP2155949B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007024438A DE102007024438A1 (de) 2007-05-25 2007-05-25 Hausgerät zur Pflege von Wäschestücken, insbesondere Waschtrockner
PCT/EP2008/055905 WO2008145518A1 (fr) 2007-05-25 2008-05-14 Appareil électroménager destiné à l'entretien du linge, en particulier sèche-linge

Publications (2)

Publication Number Publication Date
EP2155949A1 EP2155949A1 (fr) 2010-02-24
EP2155949B1 true EP2155949B1 (fr) 2010-09-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08759587A Active EP2155949B1 (fr) 2007-05-25 2008-05-14 Appareil électroménager destiné à l'entretien du linge, en particulier sèche-linge

Country Status (5)

Country Link
EP (1) EP2155949B1 (fr)
CN (1) CN101680156B (fr)
AT (1) ATE481525T1 (fr)
DE (2) DE102007024438A1 (fr)
WO (1) WO2008145518A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008041474A1 (de) 2008-08-22 2010-02-25 BSH Bosch und Siemens Hausgeräte GmbH Haushaltstrockungsgerät und Verfahren zum Reinigen eines Bauteiles, insbesonder eines Verdampfers einer Kondensatoreinrichtung eines solchen Haushaltstrocknungsgerätes
DE102008054693A1 (de) 2008-12-16 2010-06-17 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner sowie Verfahren zu seinem Betrieb
DE102009001323A1 (de) 2009-03-04 2010-09-09 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung und Verfahren zum Schleudern von Wäsche
DE102009002390A1 (de) 2009-04-15 2010-10-21 BSH Bosch und Siemens Hausgeräte GmbH Waschtrockner mit einer Filtereinrichtung sowie Verfahren zum Betrieb des Waschtrockners
DE102010040189A1 (de) * 2010-09-03 2012-03-08 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Reinigen eines Luftweges in einem Waschtrockner sowie hierzu geeigneter Waschtrockner
WO2014177176A1 (fr) * 2013-04-29 2014-11-06 Arcelik Anonim Sirketi Machine de traitement de lessive à condenseur refroidi par air comportant un moyen de collecte des bourres
CN105714533B (zh) * 2014-12-01 2018-08-28 无锡小天鹅股份有限公司 干衣装置及具有它的干衣机和洗干一体机
CN110804850B (zh) * 2018-07-19 2022-04-26 重庆海尔滚筒洗衣机有限公司 一种洗干一体机用冷凝器及洗干一体机的控制方法
DE102020100759A1 (de) * 2020-01-15 2021-07-15 Miele & Cie. Kg Verfahren und Steuergerät zum Betreiben eines Reinigungsgeräts und Reinigungsgerät
WO2021201703A1 (fr) * 2020-04-02 2021-10-07 Fisher & Paykel Appliances Limited Conduit de condensation pour lave-linge séchant combiné

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4969276A (en) * 1989-09-27 1990-11-13 Aqua-Vent Products, Inc. Clothes dryer/filter/humidifier
DE4132431A1 (de) * 1991-09-28 1993-04-01 Miele & Cie Waeschebehandlungsmaschine wie waeschetrockner oder waschtrockner
DE4325209A1 (de) 1993-07-27 1995-02-02 Bosch Siemens Hausgeraete Zum Trocknen eingerichtete Waschmaschine
DE4427361A1 (de) * 1994-08-02 1996-02-08 Bosch Siemens Hausgeraete Zum Trocknen eingerichtete Waschmaschine
DE19522307C2 (de) * 1995-06-20 2000-06-08 Bsh Bosch Siemens Hausgeraete Zum Trocknen eingerichtete Wasch- oder Geschirrspülmaschine
EP1524361B1 (fr) * 2003-10-18 2006-10-04 Lg Electronics Inc. Dispositif de condensation pour machine à laver et à sécher

Also Published As

Publication number Publication date
WO2008145518A1 (fr) 2008-12-04
DE502008001341D1 (de) 2010-10-28
CN101680156B (zh) 2011-08-17
DE102007024438A1 (de) 2008-11-27
EP2155949A1 (fr) 2010-02-24
ATE481525T1 (de) 2010-10-15
CN101680156A (zh) 2010-03-24

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