EP2177661B1 - Haushaltsgerät, insbesondere Wäschetrockner - Google Patents

Haushaltsgerät, insbesondere Wäschetrockner Download PDF

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Publication number
EP2177661B1
EP2177661B1 EP10000745A EP10000745A EP2177661B1 EP 2177661 B1 EP2177661 B1 EP 2177661B1 EP 10000745 A EP10000745 A EP 10000745A EP 10000745 A EP10000745 A EP 10000745A EP 2177661 B1 EP2177661 B1 EP 2177661B1
Authority
EP
European Patent Office
Prior art keywords
filter element
filter
scraper
domestic appliance
appliance according
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
EP10000745A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2177661A1 (de
Inventor
André Widmer
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.)
V-Zug AG
Original Assignee
V-Zug AG
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 V-Zug AG filed Critical V-Zug AG
Priority to AT10000745T priority Critical patent/ATE550476T1/de
Priority to EP10000745A priority patent/EP2177661B1/de
Priority to DK10000745.9T priority patent/DK2177661T3/da
Priority to SI201030041T priority patent/SI2177661T1/sl
Priority to PL10000745T priority patent/PL2177661T3/pl
Publication of EP2177661A1 publication Critical patent/EP2177661A1/de
Application granted granted Critical
Publication of EP2177661B1 publication Critical patent/EP2177661B1/de
Active 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 
    • D06F58/22—Lint collecting arrangements

Definitions

  • the invention relates to a household appliance, in particular a dryer for drying textiles.
  • Dryers dry the wet or wet fabrics introduced into a drying room, such as a drum, by supplying warm air into the drying room.
  • the warm air absorbs the moisture from the textiles.
  • the thus saturated with moisture exhaust air is supplied depending on the structure of the dryer a heat exchanger or discharged to the environment.
  • the warm, humid air is cooled and releases the moisture in the form of water into a collection basin.
  • the now dry, cool air is heated, thus ensuring a better moisture absorption in the drying room.
  • This dry, warm air is in turn fed to the drying room.
  • an air filter element also known as a lint filter
  • a lint filter is typically arranged between the drying space and the heat exchanger for separating particles from the air stream in general and from textile fluff in particular.
  • the dry, warm air absorbs not only as desired the moisture of the textiles to be dried but also textile particles such as lint or other deposits of dry matter due to the mechanical stress of the textiles by the air flow, the drum rotation, etc ..
  • Filter element can structures of the subsequent heat exchanger be soiled by such particles.
  • a filter element can also be used with the intention of reducing the pollution of the environment with particles.
  • filter elements To ensure that the function of such filter elements is not impaired, they must be cleaned regularly. Furthermore, such a filter element should be able to be replaced when worn or broken. In this respect, conventional filter elements are typically arranged easily accessible in the tumble dryer and manually cleaned or replaceable.
  • the device which is usually used for cleaning the filter element, is a so-called scraper for stripping the filter element more or less firmly adhering particles, especially of textile fluff.
  • a band-shaped filter element is clamped with its not necessarily containing filter material ends via pulleys on two rollers, of which at least one is operated by an electric motor.
  • a cleaning device is arranged between the filter surface and the second roller.
  • the filter material is rewound from the first roller to the second roller until the lint-covered part of the filter device has passed completely past the cleaning device and thereby cleaned.
  • Such a filter device is known from the German Utility Model G 94 13 742.0 U1 and is described as being used in a tunnel finisher for smoothing garments.
  • the filter device described requires a large space in the drying device. Especially However, with compact household dryers in their dimensions, the installation space is limited.
  • a sieve with a circular arc-shaped cross-section is provided for air flow cleaning. Furthermore, a squeegee is provided which can be operated by a motor and removes the collected lint from the screen.
  • a tubular filter for a tumble dryer which is rotatably mounted in a housing.
  • the exhaust air to be cleaned is fed to an outside of the filter.
  • Abkratzetti are provided which scrape off adhering lint with rotating filter on the outside.
  • the exhaust air of a clothes dryer is fed to a vortex chamber, are collected in the lint contained in the air flow in an end region.
  • the purified air enters through slots in a tube and is transported away.
  • a spiral fixed to the tube helps to create air vortices in the vortex chamber.
  • the filter device has a tubular filter element.
  • a filter element that follows the shape of a tubular body, in its dimensions can already be designed to be considerably more compact than, for example, a band-shaped expanded filter element with the same effective filter area. Further preferred embodiments show that even a drive for automatically inducing a particular rotational relative movement between the filter element and cleaning device for cleaning the filter element in its design takes up little space. Due to this low structural dimensions, such a filter device is particularly suitable for installation in household appliances. However, the low structural dimensions are not at the expense of the effective filter area than at best the entire tubular filter element filter material may have.
  • a two-stage filter devices which provides a further filter element for cleaning the exhaust air of the first filter element.
  • tubular includes a hollow body having a longitudinal extent and a cross section.
  • the cross-section may have any shape, for example circular, elliptical or polygonal.
  • the cross-section does not have to be consistent over the longitudinal extent but can optionally also be made variable. Longitudinal extent and cross-sectional sizes such as diameter or edge length can be a priori in any relation to each other.
  • tubular includes hollow bodies produced by rotation of a curve about a longitudinal axis such as e.g. a cylinder jacket, a truncated cone jacket, or the like.
  • a tubular body as defined does not necessarily include end closure elements for the tubular body.
  • filter element refers to that element which contains the filter material for filtering the supplied air. At best, the entire “filter element” is made of filter material. But it can also be provided holding structures for the filter material be. For example, a cylinder jacket-shaped filter element can consist entirely of filter material. But also included is an embodiment in which, for example, a jacket half made of a plastic holding device, and the other jacket half made of the actual filter material.
  • the linguistic combination of "tubular” and “filter element” thus contains all possible embodiments in which at least part of the tubular body is formed from filter material
  • filter surface or "effective filter surface” is that surface of the filter element that is filled with filter material.
  • FIG. 1 shows a conventional clothes dryer on the principle of condensation in section, the arrows indicate the air flow of the closed air circuit in the operation of the clothes dryer.
  • a drying space 1 in the form of a drum is typically equipped with dry material and is supplied with warm, dry air through rear feeds.
  • the air absorbs the moisture from the dry material in the drying room 1.
  • the moist, warm air is removed via the door 2 of the tumble dryer and freed in a designed as a lint filter device 3 of particles, especially lint.
  • the thus purified air is fed to a heat exchanger 4, in which it is first cooled in a cooling device 41 for moisture delivery, and then heated by means of a heater 42 again.
  • the cycle is closed by the thus heated, dry air is fed via a blower 5 back to the drying room 1.
  • FIG. 2 shows an embodiment of a component of a filter device 3.
  • a filter element 31 of the filter device 3 is formed in a cylinder jacket and can at its one end face via fastening means, in present structure, for example, with a pipe clamp 61, are connected to a not shown pipe for air supply. At its other end, the filter element 31 can be closed with a bottom not shown.
  • a filter material for example, serve a wire or plastic mesh whose mesh size is adapted to the size of the particles to be deposited.
  • Other air filter materials such as air filters made of porous filter material can also be used.
  • a scraper 32 is arranged as a cleaning device.
  • the scraper 32 is used for stripping particles from the filter element 31, in particular lint.
  • the wiper 32 is usually in contact with the filter element 31 and is moved over the effective filter surface. Stripping of filter element surfaces, which are not effective filter surfaces, also makes sense, as particles adhering there can also be collected in a lint depot to be described later.
  • the wiper 32 has an axis 321, on which a plurality of Abstreifhalter 323 are arranged. On the stripping holders 323 in turn scraper lips 322 are arranged, which strip the filter element 31 from the inside during a cleaning operation. Wiper lips 322 may for example be made of rubber or formed as bristle elements.
  • the scraper 32 is rotatably mounted about its axis 321, which is rotatably mounted, for example in a floor and at the air inlet.
  • the cleaning device may alternatively or in addition to a scraper air cleaner, water purifier, or have other cleaning agents.
  • the scraper holder 323 can hold a nozzle-provided hose whose nozzles are pressed onto the inner surface of the filter element 31 are directed and which hose is applied for cleaning with compressed air.
  • the filter element 31 can be freed from particles equally.
  • such a hose is then arranged at least slightly spaced from the inside of the filter element 31.
  • the hose instead of compressed air and a cleaning liquid, such as water, are supplied under pressure.
  • the aforementioned floor can also be attached to the filter element 31 in a releasable and reclosable manner, for example screwed, clamped or latched.
  • a solubility of the soil is advantageous for the discharge of deposited particles from the interior of the filter element 31, or else for replacement or repair of the cleaning device arranged inside the filter element 31.
  • the floor is preferably made of an air-impermeable material. This has the consequence that the supplied via the pipe. Air exits radially from the filter element 31 through the filter surface and is filtered. Such a filter construction thus causes, in addition to the filter function, a deflection of the air flow.
  • FIG. 3 shows a further embodiment of a filter device with a tubular filter element 31 and with a scraper 32 as a cleaning device in longitudinal section.
  • the filter element 31 is made entirely of filter material and takes the form of a cylinder jacket.
  • a scraper 32 is arranged, again with an axis 321 corresponding to the longitudinal axis of the entire filtering device 3, a scraper holder 323 and a scraper lip 322 connected to the scraper holder 323.
  • the spiral stripping holder 323 is connected to the axle 321 via webs 327.
  • the scraper 32 has a space spiral shape.
  • a three-dimensional spiral shape that follows, for example, the mantle of a truncated cone, or as in the present figure in particular helical shape.
  • Near its bottom end of the scraper 32 may have a non-marked collector in the form of, for example, a semicircle, which protects the deposited particles as possible from falling back into the front interior of the filter element 31 and instead in a chamber-like area at the bottom end of the filter element 31, the so-called Flusendepot 33, collects.
  • a space spiral scraper 32 can also take over the transport function for the deposited particles and concentrate the collection of these particles at a designated location depending on the constructive training.
  • FIG. 3 a housing 7 of the filter device 3 can be seen.
  • the housing 7 is connected to the front side with a removable bottom 35.
  • the bottom 35 is removed.
  • the axis 321 of the scraper is mounted in the present example in a guide 351 of a further filter element 37 described below.
  • the end faces of the filter elements 31 and 37 may have openings, so that the particles can be shaken out of the river depot 33 with the bottom 35 removed.
  • the design after FIG. 3 has next to the filter element 31 on another filter element 37.
  • This further filter element 37 is also tubular, in particular cylinder jacket-shaped, and thereby encloses the filter element 31.
  • the filter device 3 is formed in two stages, that is, the supplied air is filtered twice.
  • the further filter element 37 may have the same filter effect as the filter element 31, but may preferably have a higher filtering effect and, for example, be finer mesh than the filter element 31, so that the filter element 31 the Air initially freed of large particles, while the other filter element 37 separates smaller particles from the thus filtered air.
  • the further filter element 37 is made entirely of filter material, so that the filtered air exits radially from the further filter element 37.
  • a further scraper 38 is provided, which is also formed spiraling in space and between the filter element 31 and the further filter element 37 is arranged.
  • the further scraper 38 is fixedly connected to the filter element 31.
  • the drive can be substantially simplified: If in the above arrangement only the filter element 31 undergoes a rotational movement and are scrapers 32 and further filter element 37 stationary, it can be cleaned with only one drive element, a two-stage filter device.
  • drive forms are conceivable in which the two filter elements 31 and 37 are stationary, whereas both wipers 32 and 38 are rotatably mounted.
  • the filter elements 31 and 37 can be rotatably mounted, whereas the scrapers 32 and 38 are formed stationary.
  • both wipers 32 and 38 transport particles in the direction of the bottom flotation depot 33, since a transport in the direction of the air inlet side against the air flow would have to take place and there would be the danger of contamination on the drive-related components arranged on the input side.
  • the two filter elements 31 and 38 are at least partially surrounded by the housing 7.
  • a drive 34 is fixed, in particular an electric motor.
  • the driving force The electric motor is transmitted via unspecified transmission elements 39, such as gears, racks or the like, on the driven element.
  • helical scraper 32 and cylindrical filter element 31 provides a filtering device which favors small volume drive mechanisms, such as driving via a worm gear, since the elements to be moved relative to one another typically undergo rotary motion during operation.
  • FIG. 3 Arrows indicate the air flow through the filter device.
  • the air to be filtered flows through the frontal air inlet into the filter device. Due to the air-impermeable or only slightly air-permeable bottom 35 on the opposite end side of the air flow passes through the two filter elements 31 and 37 radially, see exit arrow direction.
  • the further course of the air flow is determined by the geometry of the housing 7, which is preferably open in the direction of the subsequent cooling device, so that the filtered air is supplied to the cooling device.
  • the cooling device can be arranged at a small distance from the air outlet from the optionally further filter element, for example at a distance between 2 and 5 cm.
  • a typical value for the diameter of the air inlet, which in the filter device after FIG. 3 approximately corresponds to the diameter of the filter element 31, is about 10 cm.
  • a typical value for the diameter of the filter element is 9 cm, for the diameter of the other filter element 11 cm.
  • a cylindrical filter element 31 has a diameter between 5 and 15 cm.
  • the longitudinal extent of the tubular filter element 31 is sometimes determined by the desired volume for the receiving space for particles, also called Flumendepot 33. This volume is determined in the cylindrical shape of the filter element 31 by the diameter of the filter element 31 and the excess length of the filter element 31, which is not penetrated by the scraper 32.
  • the lagoons with a diameter of 9 cm and a length of 8 cm have a capacity of approx. 5 dl.
  • the total length of the filter element is preferably greater than 10 cm, and in particular greater than 15 cm.
  • filter element 31 and wiper 32 are mounted separately rotatably and driven by an electric motor.
  • the axis 321 of the scraper 32 terminates in a cross strut 324.
  • the cross strut 324 holds a sprocket 325, which forms a worm gear not shown with a worm.
  • the filter element 31 also includes a cross brace 311 on the face side. This cross brace 311 likewise holds a transmission element 39 in the form of a toothed rim, which forms a worm gear with a worm (not shown).
  • seals 328 against each other are sealed by seals 328 against each other.
  • gear wheels can be recessed, which cooperate in the assembled state with the sprockets of scraper 32 and filter element 31 and drive them.
  • These drive gears can be arranged on shafts, which are guided through the housing cover 75 and are driven by an electric motor, for example.
  • FIG. 5 illustrates various embodiments of a scraper. Shaping and manufacturing methods of these wipers can also be applied to cleaning devices that work according to other cleaning mechanisms.
  • FIG. 5a shows a helical scraper with stripping holder 323 and wiper lip 322, wherein the stripping holder 323 is formed as a wire bending part.
  • the bent wire part is connected to a ring gear 325, which is stabilized by a crossbar 324, in the center of which the bent wire part is fixed.
  • FIG. 5b shows an alternative embodiment of a helical scraper, made of a plastic shaft 321 and semicircular or elliptical plastic Abstreifhaltern 323, which are arranged axially inclined on the axis 321 and hold at its curved outer edge of the wiper lip 322.
  • the wiper lip 322 is not one piece over the entire scraper.
  • a simple mechanical production may speak for this variant.
  • Abstreifhalter 323 and wiper lip 322 are those from FIG. 5a ), but not manufactured as a wire bending part but as a plastic injection molded part. Webs 327 connect the stripping holder 323 to the axis 321. With the exception of the wiper lip 322, all components of the scraper are after FIG. 5c ) manufactured as plastic injection parts, which can be plugged together to form a scraper.
  • a special feature of the scraper FIG. 5c includes a collector 326 which aids collection and stripping of the deposited particles.
  • FIG. 6 shows a filter device in section with an alternative embodiment of a scraper 32, which cooperates with a cylinder jacket-shaped filter element 31.
  • the wiper 32 includes a disc-shaped Abstreifhalter 323 with a wiper lip 322 on its outer periphery.
  • This scraper is now not rotatably moved against the filter element 31 for cleaning but translationally in the interior of the filter element 31 by a drive 34.
  • the stripping mechanism instead of the stripping mechanism, other cleaning mechanisms can be used.
  • the bottom-side space of the filter element 31 serves as a fluff depot.
  • FIG. 7 shows an exemplary household appliance in the form of a tumble dryer with a drying room 1, a door 2, a filter device 3 and a housing 8.
  • the filter device 3 is fed via a pipe 6 with the exhaust air, which is received from the drying room 1 via the door 2.
  • the filter device 3 is in turn arranged in a housing 7.
  • the housing 7 has a door 71, guides 72, and position wedges 74. About the door 71, the filter device 3 is accessible.
  • the guides 72 help in the insertion and removal of the filter device 3 in the housing 7.
  • the position wedges 74 facilitate the closing and opening of the door 71.
  • the housing 7 may also be connected to the household appliance that housing 7 including filter device 3 as a complete filter module can be removed from the household appliance, for example, for purposes of maintenance, replacement, or emptying the Flusendepots 33rd
  • the filter device 3 is preferably arranged in a device foot 9 of the household appliance.
  • the household appliance is placed with the device foot 9 on the ground.
  • the filter device 3 is arranged in the device foot 9 near the door to keep the length of the tube 6 low. It is preferably accessible through a control hatch below the door opening.
  • FIG. 8a shows a filter device 3 arranged in a housing 7 in section
  • FIG. 8b the same arrangement from a perspective view.
  • the air supply takes place from the opening of the filter device 3 shown at the back in the figure, ie out of the drawing sheet plane.
  • the air flow exits radially from the filter device 3. Due to the geometry of the housing 7, the air is supplied to the cooling device 42.
  • a housing wall of the filter housing 7 is replaced by a lint filter 73, which serves as a further filter element.
  • a door 71 of the housing 7 allows access to the filter device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detergent Compositions (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Extraction Or Liquid Replacement (AREA)
EP10000745A 2010-01-26 2010-01-26 Haushaltsgerät, insbesondere Wäschetrockner Active EP2177661B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT10000745T ATE550476T1 (de) 2010-01-26 2010-01-26 Haushaltsgerät, insbesondere wäschetrockner
EP10000745A EP2177661B1 (de) 2010-01-26 2010-01-26 Haushaltsgerät, insbesondere Wäschetrockner
DK10000745.9T DK2177661T3 (da) 2010-01-26 2010-01-26 Husholdningsapparat, især tørretumbler
SI201030041T SI2177661T1 (sl) 2010-01-26 2010-01-26 Gospodinjski aparat še zlasti sušilnik perila
PL10000745T PL2177661T3 (pl) 2010-01-26 2010-01-26 Sprzęt gospodarstwa domowego, zwłaszcza suszarka do bielizny

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10000745A EP2177661B1 (de) 2010-01-26 2010-01-26 Haushaltsgerät, insbesondere Wäschetrockner

Publications (2)

Publication Number Publication Date
EP2177661A1 EP2177661A1 (de) 2010-04-21
EP2177661B1 true EP2177661B1 (de) 2012-03-21

Family

ID=41722913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10000745A Active EP2177661B1 (de) 2010-01-26 2010-01-26 Haushaltsgerät, insbesondere Wäschetrockner

Country Status (5)

Country Link
EP (1) EP2177661B1 (da)
AT (1) ATE550476T1 (da)
DK (1) DK2177661T3 (da)
PL (1) PL2177661T3 (da)
SI (1) SI2177661T1 (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024125790A1 (en) * 2022-12-14 2024-06-20 Electrolux Appliances Aktiebolag Laundry washing machine equipped with a filtering group assembly

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008054548A1 (de) * 2008-12-11 2010-06-17 BSH Bosch und Siemens Hausgeräte GmbH Trockner mit Umluftanteil sowie Verfahren zu seinem Betrieb
DE102015103884A1 (de) * 2015-03-17 2016-09-22 Miele & Cie. Kg Flusenfilter für einen Wäschetrockner, Wäschetrockner und Verfahren zum Betreiben eines Wäschetrockners
EP3162950B1 (en) * 2015-10-30 2019-07-24 Whirlpool EMEA S.p.A Filter device for a household appliance adapted to perform at least a drying cycle and household appliance comprising said filter device
CN105435549A (zh) * 2015-12-29 2016-03-30 张海娟 干燥设备的湿气过滤处理装置
DE102021205492B4 (de) 2021-05-31 2023-11-23 BSH Hausgeräte GmbH Filtereinheit für einen Staubsauger

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4314409A (en) 1980-02-06 1982-02-09 Whirlpool Corporation Automatic lint screen cleaner and storage system for dryer
GB2390667B (en) 2002-07-10 2005-10-26 Gen Domestic Appliances Ltd Tumble dryers
DK1788414T3 (da) 2004-06-22 2017-01-02 Fujikura Ltd Forbindelsesfremgangsmåde og struktur af fotonisk krystalfiber
DE102005054683A1 (de) * 2005-11-16 2007-05-24 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zum Trocknen von Wäsche mittels eines Luftstroms
US20080235978A1 (en) 2007-03-26 2008-10-02 Michael Epstein Self-cleaning lint collector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024125790A1 (en) * 2022-12-14 2024-06-20 Electrolux Appliances Aktiebolag Laundry washing machine equipped with a filtering group assembly

Also Published As

Publication number Publication date
PL2177661T3 (pl) 2012-08-31
ATE550476T1 (de) 2012-04-15
DK2177661T3 (da) 2012-04-30
EP2177661A1 (de) 2010-04-21
SI2177661T1 (sl) 2012-07-31

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