EP2419557B1 - Waschtrockner mit einer filtereinrichtung sowie verfahren zum betrieb des waschtrockners - Google Patents

Waschtrockner mit einer filtereinrichtung sowie verfahren zum betrieb des waschtrockners Download PDF

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Publication number
EP2419557B1
EP2419557B1 EP10711205A EP10711205A EP2419557B1 EP 2419557 B1 EP2419557 B1 EP 2419557B1 EP 10711205 A EP10711205 A EP 10711205A EP 10711205 A EP10711205 A EP 10711205A EP 2419557 B1 EP2419557 B1 EP 2419557B1
Authority
EP
European Patent Office
Prior art keywords
air
washer
temperature
cooling air
dryer
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
EP10711205A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2419557A1 (de
Inventor
Rainer Ediger
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 EP2419557A1 publication Critical patent/EP2419557A1/de
Application granted granted Critical
Publication of EP2419557B1 publication Critical patent/EP2419557B1/de
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
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/52—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/63—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of air flow, e.g. blowing air during the washing process to prevent entanglement of the laundry
    • 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
    • D06F58/30—Drying processes 
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/34—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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/30—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
    • 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
    • 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 with a drum for washing and drying objects, a tub, a water supply, a program control, a first fan and a first heater in a process air duct, a second fan in a cooling air duct and a second heater in the tub and a Method for operating such a washer dryer.
  • a washer dryer combines the functions of a washing machine and a tumble dryer. While the washer-dryer operates as a washing machine, it is not used as a tumble dryer and vice versa. It would therefore be desirable if at the same time washing and drying functions of the washer dryer could be exploited.
  • the German patent DE 195 42 597 B4 describes a clothes dryer with an air duct, which has a suction opening for removable from the installation room of the dryer air and a blowout for air into the installation space, and with a filter device in the air duct, being alone or additionally in the flow direction upstream of the blowout a filter device is installed and the air-permeable areas of the filtering means for the finest suspended matter such as pollen and micro-organisms impermeable and equipped with a chemical and / or.physikalisches means that is hostile to life for micro-organisms.
  • the in the DE 195 42 597 B4 described tumble dryer is the additional filter device in the flow direction in front of the exhaust opening of the cooling air circuit.
  • tumble dryers are generally operated as exhaust or condensation dryers.
  • the operation of an exhaust air dryer and a condensation dryer depend in different ways on their installation conditions, in particular on the temperature and relative humidity prevailing in an installation room.
  • extract air and condensation dryers affect temperature and relative humidity in a set-up room to varying degrees.
  • Condensation dryers whose operation is based on the condensation of moisture vaporized by means of warm process air from the laundry, generally do not introduce moisture into a set-up room and allow energy recovery from the heated process air, for example by using a heat pump.
  • the condensate produced in the condensation dryer is collected and either pumped off or disposed of by manually emptying a collection container.
  • the DE 34 19 743 C2 describes a clothes dryer with a laundry drum, a heating unit provided with a supply air connection and an exhaust air connection, wherein between supply air connection of the heating unit and exhaust air connection different, the mode of operation of the dryer defining additional units are to be arranged switchable.
  • a recirculation part is interposed between the supply air connection piece and the exhaust connection piece, in which an air control device is located, whereby the supply and exhaust air ratio of the dryer can be varied.
  • an air control device is located, whereby the supply and exhaust air ratio of the dryer can be varied.
  • the DE 10 2007 013 997 A1 describes a condensation dryer with a drying chamber, a process air circuit, which has a heater for heating the Process air is associated with a first blower, with which the heated process air on the objects to be dried is feasible, and a heat pump circuit with an evaporator, a compressor and a condenser, wherein by means of a second blower, a cooling air flow for a likewise existing air-air Heat exchanger and the compressor can be generated.
  • a noteworthy difference between currently marketed washer-dryers and currently marketed dryers is that the drying facilities of the washer-dryer are much easier than the drying devices of the tumble dryer, in washing dryers in particular still cooled with fresh water condensers are used. In dryers such capacitors are no longer common.
  • One reason for these differences may be that a washer dryer necessarily always has a connection for fresh water; Another reason may lie in the fact that in a washer dryer compared to a tumble dryer much less space for the drying device is available and therefore a compromise between performance and space requirements of the drying device must be found in any case.
  • a washer-dryer which can perform not only the functions of a washing machine but also individual functions of a dryer at the same time, in embodiments a targeted cleaning of the air and possibly air conditioning of a set-up room should be possible.
  • the invention thus relates to a washer-dryer with a drum for objects to be washed and dried, a tub, a Water supply, a program control, a first fan and a first heater in a process air duct, a second fan in a cooling air duct and a second heater in the tub.
  • a display means for an indication of an excessive loading of a filter medium in the filter device upon reaching or exceeding the predetermined flow difference .DELTA.F set and / or overloading of the second blower is provided.
  • the filter device in the cooling air channel allows a cleaning of the cooling air and thus a cleaning of the air in a room of the washer dryer. This cleaning effect is also of great importance for the washer-dryer itself. Even due to the cramped space in the washer dryer may have to be accepted under certain circumstances, that important components that are subject to contamination by dirt, not or not readily by a (naturally technically unaware) user can be reached and cleaned. This applies in particular to the air-cooled device of the washer dryer according to the invention.
  • This is in the form of the filter means now assigned a means to effectively reduce the burden of dirt, which entrains the introduced from the environment of the washer dryer cooling air, or completely avoided.
  • a monitoring of the filter device and in particular the functioning of the filter medium is useful.
  • the filter device or the filter medium gradually sets to form a so-called filter cake.
  • the pressure drop increases and less air is carried through the filter medium.
  • a nonwoven or a nonwoven fabric typically used as a filter medium loses its electrostatic properties with increasing loading, so that, for example, the dust filtering can be impaired.
  • the filter medium used regularly it is therefore preferable to change the filter medium used regularly. This may be done by determining an actual usage time, or approximately by replacing the filter medium, for example, once a year.
  • the filter device in the cooling air duct generally comprises a filter medium and a frame.
  • the filter medium preferably comprises a nonwoven, in particular a spin nonwoven, which is able to filter dust by its electrostatic properties.
  • the filter medium can contain activated carbon, for example in the form of a layer.
  • Such a combination filter can also filter odors and harmful gases through the integrated activated carbon layer in addition to dusts and Partikäln, especially particulate matter such as pollen and microorganisms.
  • the filter device in the cooling air duct is therefore equipped for restraining the finest suspended matter, such as pollen and micro-organisms.
  • the filter device can be located at different locations in the cooling air duct. For easier removal of a filter medium, however, the filter device is preferably arranged at the air inlet. The filter device is preferably installed so that at least its air-permeable area, if necessary after removal of a grid in front of the air inlet or outlet, can be removed and replaced.
  • an injection molding frame made of plastic can be used, in which the filter medium can be injected directly or hung as a preformed filter cartridge in a plastic frame.
  • the washer-dryer first means for determining an air flow F mF through the cooling air duct and second means in the program control for comparing F mF with a predetermined air flow F set and for controlling a rotational speed of the second blower, so that the Amount of the difference F mF -F set within a predetermined range .DELTA.F set is.
  • the first means comprise a flow meter for measuring the flow of air through the cooling air duct.
  • the second means comprise in particular parts of the program control in which the air flow F set is stored and which are designed for the regulation of the rotational speed of the second blower.
  • the washer-dryer in the cooling air duct has a first temperature sensor for determining a temperature T R of an air in a set-up room and fifth means in the program control for comparison with a predetermined temperature T set stored in the program control.
  • the washer dryer advantageously in the program control on sixth means for influencing the second blower and / or for influencing a heat exchange in the heat exchanger, sol sol that the amount of the temperature difference T R -T set does not exceed a predetermined value .DELTA.T R.
  • the washer-dryer is configured as a scrubber dryer and has a second sensor for determining a process air temperature T P and / or for determining a relative humidity H P of the process air and a third sensor for determining a relative humidity H R of the air in a set-up room.
  • the washer dryer in the program control seventh means for comparing the temperature T R and the relative humidity H R of the air in the installation room with a temperature T P and a relative humidity H P of the process air in the washer dryer and eighth means for at least partially opening or closing at least one controllable closure device in an air inlet duct and / or air outlet duct connected to the process air duct in dependence on one predetermined temperature difference .DELTA.T between the temperature T P and the temperature T R , and / or a predetermined relative humidity H R set the air in the installation room.
  • An operating mode of the dryer which takes into account the conditions in the installation room and in the dryer can be set manually by a user of the washer dryer or automatically.
  • sensor means a single sensor or system of sensors.
  • the washer-dryer For heating the process air, an electric heater is generally used.
  • the washer-dryer can be used for air-conditioning a room, in particular for heating the room air.
  • the invention also provides a method for operating a washer-dryer with a drum for objects to be washed and dried, a tub, a water supply, a program controller, a first blower and a first heater in a process air duct (21), a second blower and a Filter device in a cooling air duct, and a second heater in the tub.
  • air is conveyed from an installation space by means of the second blower through the filter device in the cooling air duct.
  • the invention advantageously allows either a washing process or a drying process to be carried out simultaneously in the drum.
  • a temperature T R of an air in the installation room is determined with the aid of a first temperature sensor in the cooling air duct and a comparison with fifth means in the program control a stored in the program control predetermined temperature T set performed.
  • the number of rotations of the second blower is preferably changed by means of sixth means in the program control and / or the heat exchange in the heat exchanger is influenced such that the amount of the temperature difference T R -T set does not exceed a predetermined value ⁇ T R.
  • the inventive method leads in particular to a purification of room air.
  • two variants are to be distinguished:
  • Variant 1 of the process according to the invention can be carried out if a washing process is carried out in the washer-dryer or if no laundry treatment process is carried out in the drum at all. In none of these cases is the process according to the invention generally influenced by cleaning room air in the cooling air duct.
  • the second fan is operated to convey the room air through the cooling air duct, in which a filter device is located.
  • the speed of fan is variable and can be adapted to different conditions in the filter and in the installation room of the washer dryer.
  • a measure of the increase in the flow resistance of the filter can be obtained by comparing an air flow with the filter switched on and with the filter switched off.
  • a flow meter can advantageously be arranged in the cooling air duct. Exceeds the decrease in the air flow with switched filter device a predetermined level, is closed to a required cleaning of the filter device and a filter medium either cleaned or replaced.
  • the speed of rotation of the second fan in the cooling air circuit can also be determined in particular with regard to the size of the space to be cleaned, i. be tuned with regard to the volume of air to be circulated. In general, the speed of the second blower will be comparatively large in a large room.
  • a period of time for carrying out the method according to the invention can be suitably specified, wherein this period also takes into account in particular the volume of the air volume to be circulated in the installation room.
  • the process according to the invention which is a cleaning process for air, that the air to be purified is not passed through the filter device located in the cooling air duct only for its purification. There is also a heating of the room air to be cleaned, since the room air in the heat exchanger absorbs heat from the circulating process air.
  • a temperature sensor can be arranged at the air inlet of a washer dryer, which measures the temperature of the air to be cleaned in the cooling air duct. If a predetermined maximum temperature T E max is exceeded, then the drying process may optionally be influenced so that the heat exchange in the heat exchanger is reduced, for example by reducing the heating power of the second heater and / or by influencing the air flow in the process air duct.
  • a prioritization may be made by a user, for example by selecting a corresponding one Program of the washer-dryer.
  • a prioritization can be made with regard to drying processes or air purification processes.
  • the more the drying method is favored here the higher will generally be the predetermined maximum temperature T E max .
  • the heat exchange in the heat exchanger is reduced. As a result, in this procedure, the drying times will be extended.
  • the inventive method and the washer-dryer according to the invention can also contribute to the air conditioning of a room.
  • the method for air conditioning a room relates to a method of controlling the temperature and relative humidity of the air in a room using this dryer.
  • the washer-dryer according to the invention has the advantage that it is not only used as a washer-dryer, i. a device that can perform a washing process or a drying process can be operated.
  • the washer-dryer according to the invention can moreover be used for cleaning the air of a room (installation room) and in embodiments for air-conditioning the room with regard to a desired temperature and / or humidity.
  • FIG. 1 It is referred to FIG. 1 ,
  • FIG. 1 is a schematic representation of the presently relevant parts of a washer dryer, in which a particular method can be performed, in particular a cleaning of a room air. Other embodiments are conceivable.
  • the dashed lines indicate the direction of flow of air.
  • the washer-dryer of in FIG. 1 embodiment shown has a tub 1, in which a drum 2 rotatably mounted and can be operated by the drive motor 14.
  • a small angle eg 13 °
  • the washer-dryer also has a liquor feed system which comprises a water connection fitting for the domestic water network 8, an electrically controllable valve 9 and a supply line 10 to the tub 1, which optionally also passes through a detergent dispenser 11 may be, from which the feed water can carry detergent portions in the tub 1.
  • a first heater 13 for an aqueous liquid.
  • the valve 9 as well as the first heater 13 may be controlled by a program controller 12 in accordance with a program schedule associated with a time program and / or the achievement of certain measurements of parameters such as liquor level, liquor temperature, laundry drum speed, etc. within the washing machine can be bound.
  • 15 means a pressure sensor for the measurement of the hydrostatic pressure p in the tub 1.
  • 17 means a separate chamber in which, for example, a softener can be kept ready.
  • the drum 2 the still moist laundry can be dried after a completed washing process including rinsing steps.
  • the drum 2 acts as a drying chamber, is passed through the heated process air.
  • the process air is guided in a closed process air circuit 21 by means of a first blower 22 in the embodiment of a washer dryer according to the invention shown here.
  • the first fan 22 carries the process air via a second heater 23, where the process air is heated before entering the drum 2.
  • the Drum 2 absorbs the dry, hot process air moisture from the wet laundry, which condenses after leaving the drum 2 in an air-to-air heat exchanger 24.
  • the condensation of the moisture contained in the moist, warm process air is in this case by comparatively cold room air flowing in a cooling air passage 20 through the air-air heat exchanger 24 causes.
  • the moist, warm process air flowing in the process air duct 21, which is also guided through the air-air heat exchanger 24, is cooled, so that condensate is produced and collected in a condensate tray, not shown here, from which it can be disposed of by pumping out or emptying.
  • the room air acting as cooling air e.g. of the installation room is conveyed by means of a second blower 19 in the cooling air duct 20 from an air inlet 25 to an air outlet 26.
  • a filter device 18 is located in the cooling air channel 20 in the vicinity of the air inlet 25. If no filtering of cooling air or room air is desired, the filter device 18 can be removed or brought into a position in which it is is no longer flowed through by cooling air.
  • a method can be carried out in which air is conveyed from an installation space by means of the second blower through the filter device in the cooling-air duct.
  • a flow meter 27 provided in the cooling air passage 20 and a temperature sensor 28 likewise present therein allow carrying out of preferred embodiments of the method as indicated above.
  • such a method can also be carried out independently of a washing process possibly taking place in the drum.
EP10711205A 2009-04-15 2010-03-24 Waschtrockner mit einer filtereinrichtung sowie verfahren zum betrieb des waschtrockners Not-in-force EP2419557B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009002390A DE102009002390A1 (de) 2009-04-15 2009-04-15 Waschtrockner mit einer Filtereinrichtung sowie Verfahren zum Betrieb des Waschtrockners
PCT/EP2010/053854 WO2010118935A1 (de) 2009-04-15 2010-03-24 Waschtrockner mit einer filtereinrichtung sowie verfahren zum betrieb des waschtrockners

Publications (2)

Publication Number Publication Date
EP2419557A1 EP2419557A1 (de) 2012-02-22
EP2419557B1 true EP2419557B1 (de) 2013-01-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10711205A Not-in-force EP2419557B1 (de) 2009-04-15 2010-03-24 Waschtrockner mit einer filtereinrichtung sowie verfahren zum betrieb des waschtrockners

Country Status (4)

Country Link
EP (1) EP2419557B1 (zh)
CN (1) CN102395722B (zh)
DE (1) DE102009002390A1 (zh)
WO (1) WO2010118935A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR201106336A1 (tr) * 2011-06-27 2013-01-21 Ar�El�K Anon�M ��Rket� Hava soğutmalı kondenser içeren bir çamaşır yıkama ve kurutma makinası.
CN103088607A (zh) * 2011-11-04 2013-05-08 博西华电器（江苏）有限公司 洗衣干衣机
CN108004714B (zh) * 2016-10-31 2021-07-06 博西华电器（江苏）有限公司 洗衣干衣机的控制方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3419743C2 (de) 1984-05-26 1993-10-21 Miele & Cie Trommeltrockner für Wäsche
DE19542597B4 (de) 1995-11-15 2006-06-01 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrockner mit einem Luftführungskanal
KR100644834B1 (ko) * 2004-04-09 2006-11-14 엘지전자 주식회사 세탁기의 건조장치
EP1852541B1 (en) * 2006-05-02 2011-08-10 Electrolux Home Products Corporation N.V. Dryer with drying sequence using an additive
CN101082161B (zh) 2006-05-31 2013-10-09 博西华电器（江苏）有限公司 设有烘干程序的滚筒洗衣机及其控制方法
DE102007013997A1 (de) * 2007-03-23 2008-09-25 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner und Verfahren zum Betreiben eines Kondensationstrockners
DE102007018784A1 (de) 2007-04-20 2008-10-23 BSH Bosch und Siemens Hausgeräte GmbH Automatische, zum Trocknen eingerichtete Waschmaschine
DE102007024438A1 (de) 2007-05-25 2008-11-27 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät zur Pflege von Wäschestücken, insbesondere Waschtrockner
US7870799B2 (en) * 2008-09-11 2011-01-18 Whirlpool Corporation Method and apparatus for testing the air flow in a clothes dryer

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Publication number Publication date
EP2419557A1 (de) 2012-02-22
CN102395722A (zh) 2012-03-28
WO2010118935A1 (de) 2010-10-21
DE102009002390A1 (de) 2010-10-21
CN102395722B (zh) 2014-01-01

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