EP3091117A1 - Seche-linge et procede de fonctionnement d'un seche-linge - Google Patents

Seche-linge et procede de fonctionnement d'un seche-linge Download PDF

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Publication number
EP3091117A1
EP3091117A1 EP16020143.0A EP16020143A EP3091117A1 EP 3091117 A1 EP3091117 A1 EP 3091117A1 EP 16020143 A EP16020143 A EP 16020143A EP 3091117 A1 EP3091117 A1 EP 3091117A1
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EP
European Patent Office
Prior art keywords
laundry
adsorbent
moisture
adsorption module
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.)
Granted
Application number
EP16020143.0A
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German (de)
English (en)
Other versions
EP3091117B1 (fr
Inventor
Olaf Witte
Stefan Siepmann
Norbert Wieczorek
Michael Presto
Meltem Erdogan
Uwe Bau
Franz Lanzerath
André Bardow
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
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Miele und Cie KG
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Publication of EP3091117A1 publication Critical patent/EP3091117A1/fr
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Publication of EP3091117B1 publication Critical patent/EP3091117B1/fr
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • 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

Definitions

  • the invention relates to a washer-dryer, that is to say a domestic appliance which is capable of both washing and drying laundry.
  • a washer-dryer that is to say a domestic appliance which is capable of both washing and drying laundry.
  • the washer dryer primarily saves space - it only needs to be purchased and set up a device.
  • a washer-dryer has a tub and a laundry drum rotatably arranged in the tub to hold laundry.
  • a heating element, a fan and a condenser are provided, which together with the tub provide a circuit which is traversed by a process air in a drying process.
  • Another drying concept provides that adsorbents are used for drying in household appliances.
  • An example of this shows EP 2 315 547 B1 , From which results in a dishwasher in which a zeolite-filled sorption is operated as a drying device.
  • An application of drying by means of adsorption in the area of the washer dryer is described in EP 2 439 329 B1 and in DE 10 2007 031 481 A1 disclosed.
  • the invention thus presents the problem of providing a washer-dryer and a method for its operation in which the size of the adsorption module or the amount of adsorbent is optimized.
  • the invention is based on the consideration of designing an adsorption module in such a way that the energy consumption of an overall process of washing phase and drying phase in the washer-dryer is minimized.
  • the adsorption module is not designed to receive all the moisture contained in the laundry during the drying phase. Instead, it is about bringing in the excess energy arising during the desorption process as completely as possible in the subsequent washing process.
  • the adsorption module designed in this way may well be sufficient to operate the entire drying phase exclusively by means of adsorption.
  • the washer-dryer has a control device which is designed to carry out the treatment method according to the invention.
  • the adsorption module may be an open adsorption system in direct communication with the atmosphere. Here, the adsorption and the desorption occur at ambient pressure. Alternatively, it may be a closed adsorption system, ie a system sealed from the ambient air. With a closed adsorption system, the working pressure can be freely selected.
  • a partially or already completely discharged adsorption module ie an adsorption module in which the adsorbent contained therein is essentially dry
  • moist process air is blown out of the tub into the adsorption module during the drying phase by the fan.
  • the moisture from the process air is adsorbed by the adsorbent.
  • the adsorption is an exothermic process, so that the heat energy released due to the adsorption process heats the process air.
  • the dry due to the flow through the adsorption hot process air is passed by means of the blower in the tub, where it absorbs moisture from there arranged in the laundry drum laundry and so dry the laundry.
  • the now again moist process air is then passed through the adsorption module again in the sense of a cycle in order to continue loading the adsorbent.
  • the drying process may continue to operate until the adsorbent is fully loaded, that is, until the adsorbent is unable to absorb additional moisture at a given process pressure. This is usually carried out at a loading of the adsorbent between 20% and 40%, depending on the adsorbent. If the laundry is then not sufficiently dry, drying the clothes by means of a conventional drying process can continue.
  • a capacitor can be used.
  • the use of a heat pump can be beneficial.
  • the adsorption module in the drying phase is operated simultaneously with the condenser and optionally with the heat pump.
  • This has the advantage that the drying process can run faster.
  • the majority of moisture is removed from the process air passing out of the tub by means of the condenser, and the adsorption module serves to remove the residual moisture from the process air which emerges from the condenser.
  • the process may be tuned so that the adsorbent in the adsorption module is fully loaded only at the end of the drying phase or even at the end of two consecutive drying phases.
  • the adsorption module can also be operated temporarily or at intervals in the drying phase.
  • a boost mode can be provided, in which the adsorption module is switched on after half or towards the end of a drying phase in order to accelerate the drying process abruptly.
  • a wash load of laundry after the washing phase is usually distributed over two drying processes. For example, following a wash at a standard load of 5.5 kg of laundry, usually two drying phases are performed at a load of about 2.75 kg each. This is the reason why it can be advantageous if the adsorption module is completely laden with moisture only after the second drying phase. The advantage is then that the adsorption module can be active during both drying phases in order to support the drying process.
  • a partially or already fully loaded adsorption module ie an adsorption module in which the adsorbent is loaded to saturation with adsorbed moisture
  • the moisture is removed from the adsorbent and in the tub in a subsequent washing phase in a desorption process directed.
  • the process air fed into the adsorption module must have a certain minimum temperature, namely an adsorption-dependent desorption temperature. This desorption temperature is much higher in conventional adsorbents than the temperature required for washing.
  • the moist process air emerging from the adsorption module is therefore always warmer than the laundry in the tub, so that the moisture condenses on the laundry. by virtue of condensation heat is released in this condensation process so that the laundry is heated at the same time and brought to the optimum washing temperature required for the selected washing process.
  • the adsorption module contains maximally so much adsorbent that this total heat of condensation does not exceed the washing energy required for a normal washing process by more than 20%, 10% or 5%.
  • the aromatickondensations Mother deliverable to the laundry does not exceed the washing energy required for a normal washing process.
  • the total adsorbed by the adsorbent total moisture in completely laden with moisture adsorbent loading of the adsorbent between 20% and 45%, preferably between 25% and 35% or between 30% and 40%.
  • the adsorbate that is to say the adsorbed moisture
  • the loading is defined as the mass ratio between the adsorbate, ie the adsorbed moisture, and the adsorbent or adsorbent.
  • the maximum load is about 30%, while for silica gel it is about 35-40%.
  • the normal washing process corresponds to a standard washing cycle at a washing temperature of 60 ° C. and a laundry load of 5.5 kg of laundry.
  • the normal washing operation is equivalent to a standard one-load laundry load.
  • the normal washing process can assist in a standard wash cycle a washing temperature of 60 ° C and a laundry load of 6 kg, 6.5 kg, 7 kg or 8 kg of laundry.
  • the total heat of condensation which can be delivered to the laundry is between 500 watt hours and 900 watt hours, preferably between 600 watt hours and 850 watt hours, more preferably between 700 watt hours and 800 watt hours.
  • the adsorption module contains between 2kg and 7kg adsorbent, preferably between 2.5kg and 4.5kg or between 4.5kg and 6.5kg, more preferably between 3kg and 4kg or between 5kg and 6kg.
  • the adsorption module preferably contains between 3kg and 4kg zeolite, more preferably about 3.55kg, and when using silica gel preferably between 5kg and 6kg silica gel, more preferably about 5.85kg.
  • the adsorption module contains as adsorbent a silica gel, also called silica gel, and / or a zeolite.
  • a silica gel also called silica gel
  • the silica gel 123, 125 and / or 127 and the zeolite 13X are advantageous here.
  • Salts are preferably incorporated into the silica gel, for example calcium chloride hexahydrate, in order to obtain a so-called selective water sorbent (SWS) as the adsorbent.
  • SWS selective water sorbent
  • the adsorbent may be in the form of a bed in a fixed bed reactor.
  • a lye container inlet heating element which is arranged in a lye container inlet line to heat the process air immediately before entering the tub, and / or an adsorption module inlet heating element is provided, which is arranged in a Adsorptionsmodulzulauftechnisch to the process air immediately before entry to heat in the adsorption module.
  • an adsorption module heating element which is set up to bring the adsorption module to the desorption temperature necessary for the desorption process.
  • the adsorption module is optionally arranged together with the adsorption module inlet heating element between the fan and the tub or the tub inlet heating element, preferably so that the process air passing out of the tub flows through first the condenser, then the fan and then the adsorption module and finally returned to the tub.
  • existing washer-dryers can preferably also be retrofitted with an adsorption module.
  • FIG Fig. 1 The course of a conventional drying process in a washer-dryer according to the prior art will be described with reference to the schematic representation in FIG Fig. 1 explained.
  • a cycle process is illustrated by means of the broad arrows which schematically represent the flow of a process air 7 between main components of the washer dryer.
  • drier process air 7 flows into the tub 1 and removes moisture from the laundry.
  • the cooled and moist process air 7 due to this process flows to the condenser 3, where it continues to cool and the moisture partially condenses out.
  • the process air 7 is then passed to a heating element 5, which heats the process air 7. This reduces the relative humidity of the process air 7.
  • a blower 6 the warm dry process air 7 is again supplied to the tub 1.
  • the resulting cycle is maintained until the laundry in the tub 1 has reached the desired degree of dryness and the drying process is completed.
  • a heat pump system (not shown) may be used, which is a combination of an evaporator and a condenser. Then it is spoken by a heat pump condenser dryer or by a condensation dryer, which works on the principle of the heat pump. Also in all embodiments of the invention described above or below, instead of the condenser 3, such a heat pump system can be used.
  • the circuit comprises the tub 1, in which the washing drum 11 is rotatably mounted, the condenser 3, the fan 6 and an adsorption module 2, which is filled with an adsorbent.
  • the components within the dashed frame 71 are those in the conventional washer-dryer Fig. 1 already existing components.
  • a capacitor feed line 43 leads to the capacitor 3.
  • a Lye container inlet line 41 leads the process air to the tub 1 and a Adsorptionsmodulzulauftechnisch 42 to the adsorption tank 2.
  • These lines 41, 42, 43 may be partially to channels, pipes or hoses. However, the term line may also simply mean any kind of structure which causes the process air 7 to be directed along a desired path to the respective component 1, 2, 3 of the washer dryer.
  • a tub inlet heating element 51 and an adsorption module inlet heating element 52 are provided.
  • the suds container inlet heating element 51 serves to heat the process air 7 emerging from the adsorption module 2 before it flows into the suds container 1. This is necessary in a drying phase, when the temperature increase achieved due to the adsorbent used is not sufficient to dry the laundry efficiently. In the drying phase, therefore, the fan 6, the condenser 3, the adsorption module 2 and optionally the suds container inlet heating element 51 are active.
  • the initially moist process air 7 is passed through the condenser feed line 43 to the condenser 3, where it cools as in a conventional dryer.
  • the adsorption module 2 the residual moisture from the process air 7 is adsorbed on the adsorbent and the process air 7 undergoes a temperature elevation. If the temperature of the process air 7 after the temperature stroke is sufficient to effectively remove moisture from the laundry in the tub 1, the warm air which is now dry due to the adsorption process is passed through the liquor container supply line 51 into the tub 1 without being further heated. Otherwise, the process air 7 is heated by means of the liquor container inlet heating element 51 to the necessary temperature and enters the tub 1.
  • the dry laundry is usually removed by the user from the washing drum 11 and either immediately after, or but after some time, for example, after a few hours, days or even weeks a new load on laundry placed in the washing drum 11.
  • a washing phase is initiated.
  • the laundry is heated by means of a arranged below the tub heating element and brought to the desired or required washing temperature. In the present case, this is done instead by means of the emerging from the adsorption 2 process air 7.
  • Die Process air 7 was first heated to the required desorption temperature by means of the adsorption module inlet heating element 42. This is about 150 ° C for silica gel and about 300 ° C for zeolite.
  • the hot dry process air 7 then flows through the adsorption module 2 and absorbs the moisture stored in the adsorbent in a desorption process. As a result, the process air 7 is cooled slightly and at the same time moister.
  • the damp Process air 7 from the adsorption module 2 is then passed through the tub container feed line 41 into the tub 1. There condenses the moisture from the process air to the laundry, on the walls of the tub 1 and the washing drum 11. Due to this condensation process condensation heat is released, which heats the laundry.
  • the desorption process ends when the adsorbent is completely dry, that is, when the adsorption module 2 is completely regenerated, or when the laundry has reached the desired wash temperature, so that the washing process can begin. If the adsorbent still contains moisture, the desorption process can be repeated within the wash phase to warm the wash.
  • the energy which can be stored on the laundry by means of condensation which is the maximum storage capacity in the adsorption module 1, is sufficient to provide the energy required in the washing process.
  • the energy required is preferably not exceeded by the total heat of condensation, by 5%, by 10% or by 20%.
  • the energy required for the washing process preferably consists of the heat energy, which is necessary for heating the laundry to the desired washing temperature.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP16020143.0A 2015-05-06 2016-04-18 Seche-linge et procede de fonctionnement d'un seche-linge Active EP3091117B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015107033.2A DE102015107033B4 (de) 2015-05-06 2015-05-06 Waschtrockner und Verfahren zum Betreiben eines Waschtrockners

Publications (2)

Publication Number Publication Date
EP3091117A1 true EP3091117A1 (fr) 2016-11-09
EP3091117B1 EP3091117B1 (fr) 2017-11-22

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DE (1) DE102015107033B4 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3239389A1 (fr) * 2016-04-28 2017-11-01 Miele & Cie. KG Sèche-linge et procédé de fonctionnement d'un sèche-linge
EP3239388A1 (fr) * 2016-04-28 2017-11-01 Miele & Cie. KG Sèche-linge et procédé de fonctionnement d'un sèche-linge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007031481A1 (de) 2007-07-06 2009-01-08 BSH Bosch und Siemens Hausgeräte GmbH Waschtrockner
EP2315547B1 (fr) 2008-07-28 2013-01-30 BSH Bosch und Siemens Hausgeräte GmbH Procédé de fonctionnement d'un appareil électro-ménager fonctionnant avec de l'eau
EP2439329B1 (fr) 2010-10-08 2013-03-06 Miele & Cie. KG Lave-sèche-linge doté d'une unité de séchage
DE102012221830A1 (de) * 2012-11-29 2014-06-05 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrockner und Verfahren zum Betreiben eines Wäschetrockners

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011000167A1 (de) * 2011-01-17 2012-07-19 Miele & Cie. Kg Haushaltgerät mit Sorptionstrocknung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007031481A1 (de) 2007-07-06 2009-01-08 BSH Bosch und Siemens Hausgeräte GmbH Waschtrockner
EP2315547B1 (fr) 2008-07-28 2013-01-30 BSH Bosch und Siemens Hausgeräte GmbH Procédé de fonctionnement d'un appareil électro-ménager fonctionnant avec de l'eau
EP2439329B1 (fr) 2010-10-08 2013-03-06 Miele & Cie. KG Lave-sèche-linge doté d'une unité de séchage
DE102012221830A1 (de) * 2012-11-29 2014-06-05 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrockner und Verfahren zum Betreiben eines Wäschetrockners

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3239389A1 (fr) * 2016-04-28 2017-11-01 Miele & Cie. KG Sèche-linge et procédé de fonctionnement d'un sèche-linge
EP3239388A1 (fr) * 2016-04-28 2017-11-01 Miele & Cie. KG Sèche-linge et procédé de fonctionnement d'un sèche-linge

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EP3091117B1 (fr) 2017-11-22
DE102015107033A1 (de) 2016-11-10
DE102015107033B4 (de) 2017-11-23

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