WO2016095970A1 - Appareil de séchage du linge avec système de filtre - Google Patents

Appareil de séchage du linge avec système de filtre Download PDF

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Publication number
WO2016095970A1
WO2016095970A1 PCT/EP2014/078012 EP2014078012W WO2016095970A1 WO 2016095970 A1 WO2016095970 A1 WO 2016095970A1 EP 2014078012 W EP2014078012 W EP 2014078012W WO 2016095970 A1 WO2016095970 A1 WO 2016095970A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
nozzle
drying apparatus
laundry drying
liquid
Prior art date
Application number
PCT/EP2014/078012
Other languages
English (en)
Inventor
Nicola Reid
Giuseppe Rossi
Original Assignee
Electrolux Appliances Aktiebolag
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 Electrolux Appliances Aktiebolag filed Critical Electrolux Appliances Aktiebolag
Priority to CN201480084036.0A priority Critical patent/CN107002343B/zh
Priority to PCT/EP2014/078012 priority patent/WO2016095970A1/fr
Priority to AU2014414436A priority patent/AU2014414436B2/en
Priority to EP14823954.4A priority patent/EP3234255B1/fr
Publication of WO2016095970A1 publication Critical patent/WO2016095970A1/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
    • D06F58/10—Drying cabinets or drying chambers having heating or ventilating means
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • 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 

Definitions

  • the invention relates to a laundry drying apparatus, in particular a dryer or washer-dryer.
  • a filter system for filtering lint is arranged upstream of the heat exchanger.
  • This filter system comprises two filter elements mounted at a support frame.
  • the first filter element is a 5 coarse filter filtering coarse lint parts whereas the second filter is filtering fine particles.
  • This filter system shall trap even finest particles in the process drying air flow before this drying air flow is reaching the heat exchanger.
  • the filter system is extractable out of the cabinet of the laundry drying apparatus in order to clean the fine filter from trapped lint. 0 It is an object of the invention to provide a laundry drying apparatus providing an efficient and facile cleaning of a filter system arranged within a drying air channel.
  • a laundry drying apparatus - in the following description also denoted in brief "apparatus” - comprises a cabinet and a laundry storing compartment arranged within the cabinet.
  • An air channel is arranged within the cabinet and adapted to guide drying air from at least one air outlet of the laundry storing compartment.
  • the air o channel is adapted to guide the drying air to at least one air inlet of the laundry storing compartment.
  • the apparatus is providing a closed loop air channel such that the laundry storing compartment and the air channel form a closed loop for circulating the drying air.
  • the apparatus comprises a filter system in order to trap lint removed from laundry during a drying cycle.
  • the filter system is arranged within the air channel downstream the laundry storing compartment.
  • the filter system contains a first lint filter (in brief "first filter”) and a second lint filter (in brief “second filter”). Further, the apparatus comprises a heat exchanger arranged within the air channel and which is adapted to cool the drying air. The filter system is arranged upstream of the heat exchanger.
  • the upstream arrangement means that the filter system is arranged between the laundry storing compartment and the at least one heat exchanger.
  • the heat exchanger arranged in the air channel is an evaporator of a heat pump system of the apparatus and in an alternative embodiment the heat exchanger is a drying air/ambient cooling air heat exchanger of the apparatus which is used e.g. in a condensation dryer for cooling process air.
  • the apparatus comprises a filter wet cleaning unit which has a nozzle for supply liquid in order to wash the first filter.
  • the nozzle is arranged such that the liquid flowing out of the nozzle is directed towards the front surface of the first filter.
  • the filter wet cleaning unit is adapted to preferably provide an automatic filter cleaning thus avoiding or reducing requirement for manual filter cleaning by the user over many drying cycles.
  • the first filter is cleaned or washed very efficiently by directing liquid flowing out of the nozzle towards the front surface of the first filter.
  • the front surface is particularly the side of the first filter where the drying air is entering the first filter. Since lint, fluff and other particles are trapped preferably at the front surface, the first filter can be cleaned/washed efficiently in a very short time using the wet cleaning unit.
  • the nozzle has one or more outlets for supplying liquid.
  • the at least one outlet is arranged above and/or upstream of the first filter.
  • the laundry storing compartment is a drum or a rotatable drum or a drum that is rotatable around a (or a substantially) horizontal axis.
  • the apparatus does not comprise any additional lint filter apart from the filter system.
  • any additional lint filter components to arrange within the cabinet can be avoided.
  • the first filter is configured and arranged relative to the nozzle in such a manner that the second filter is completely or substantially screened or protected from contact with liquid flowing out of the nozzle.
  • a first filter type which is adapted for being wet-cleaned after every drying cycle and a second filter type adapted to provide filtering function over a high number of drying cycles. This supports the efficiency of the cleaning process and the user-friendliness of the filter system.
  • the filter system comprises a support structure having a first supporting position and a second supporting position. The first supporting position is adapted to support the first filter, whereas the second supporting position is adapted to support the second filter.
  • the support structure is designed such that an air gap is formed between the first filter and second filter when both filters are placed in their supporting positions, i.e. in the first supporting position and in the second supporting position.
  • the air gap is adapted such that the filters do not or essentially do not abut to each other.
  • the gap is dimensioned such that the first filter is adapted to screen or to shield the second filter from contact with liquid flowing out of the nozzle, even in case some of the liquid passes from the front side of the first filter to the rear side of the first filter. Due to the gap the liquid can flow down in the gap without contacting the surface of the second filter. In case the filters essentially do not abut to each other, they may abut at an edge, for example at the upper edge. However then the gap or clearance is provided at the other or remaining areas. While providing the gap, the filters are preferably arranged in close neighborhood or arranged adjacent to each other such that the filter system is designed in a space-saving manner.
  • the filters are supported by the support structure independently of each other thus providing a user-friendly handling of the filters, e.g. if only one filter shall be detached or changed.
  • the nozzle has at least one of the following features: the nozzle is adapted to distribute the liquid over or essentially over the horizontal width of the front surface of the first filter,
  • the nozzle is arranged at or within the air channel relative to the first filter such as to supply the liquid to an upper region of the first filter,
  • the nozzle has one, two, three or more outlets adapted to direct the liquid towards the first filter
  • the nozzle has at least one elongated outlet wherein the elongated extension is in parallel to the first filter surface.
  • Such design features of the nozzle support an efficient cleaning of the first filter along its whole filter surface.
  • the air channel of the apparatus comprises a channel opening wherein the first and second filters are removable from the air channel through the channel opening.
  • the cabinet comprises a cabinet opening in such a manner that the first and second filters are removable from the air channel through the channel opening and the cabinet opening. In this regard, the filters may be removed one after the other.
  • the first and second filters may be provided in a or as a filter unit of the filter system that could be simply removed as a sole/complete unit or component from the air channel.
  • the liquid flowing out of the nozzle of the filter wet cleaning unit and the surface plane of the first filter may have a relative arrangement to each other to improve flushing efficiency.
  • the liquid flowing out of the nozzle has a first direction and the surface plane of the first filter has a second direction, wherein the first and second directions are inclined to each other by an inclination angle.
  • the nozzle is oriented relative to the surface of the first filter such that the liquid flowing out of the nozzle hits or urges the surface of the first filter under an inclination angle.
  • the value of the inclination angle is preferably at or more than 2°, 3°, 5°, 10° or in the range from 1° to 4° or 2° to 5° or 3° to 10°.
  • the filter system and the first and second filters are placed in their respective operational positions in the apparatus such that the nozzle of the filter wet cleaning unit directs the liquid towards the first filter.
  • the second filter is arranged, in relation to the nozzle, behind the first filter in a manner such that the first filter forms a screen adapted to prevent liquid flowing out of the nozzle to reach onto the surface of the second filter.
  • the first filter thus is acting in an additional function as a means for protecting the second filter against unnecessary or disturbing liquid.
  • the apparatus comprises a heat pump system.
  • the heat exchanger is a first heat exchanger and a second heat exchanger is provided for heating the drying air.
  • the filter system could be applied to an apparatus having a heat pump function, in 5 particular a heat pump dryer or heat pump washer-dryer.
  • the filter system comprises at least one filter alignment element.
  • This at least one element is adapted to cooperate with at least one counter- alignment element provided at the filter wet cleaning unit or at the air channel.
  • the elements o correspond or mechanically cooperate with each other such that the first filter is
  • the at least one filter alignment element effects accurate alignment of the filter system within the air channel. Further, this alignment causes automatically the desired relative arrangement between the filter system and the nozzle when the filter system is inserted into the operational position 5 within the air channel. This ensures a correct positioning between the filter system and the nozzle hereby supporting an efficient cleaning of the first filter.
  • the filter system comprises a liquid guiding element adapted to cooperate with the nozzle of the filter wet cleaning unit.
  • the liquid guiding o element has a guiding or assisting function by guiding the liquid supplied from the nozzle of the filter wet cleaning unit towards the first filter.
  • the filter system enables the supplied liquid to be effectively distributed across the first filter's surface to be cleaned.
  • the liquid guiding element has simultaneously a functional property to constitute or provide the aforementioned filter alignment element.
  • the liquid guiding element is characterized by at least one of the following features:
  • the liquid guiding element is adapted or designed such that the lateral expansion of the liquid curtain width is achieved as broad as the lateral width of the first filter. Such an expansion further supports uniform and effective liquid distribution over the first filter.
  • the gap (respectively air gap) between the first filter and second filter has at 5 least one of the following features:
  • the gap width is at least 1.5 mm, 2 mm, 4 mm or 5 mm,
  • the gap is wedge-shaped or approximately wedge-shaped.
  • Such a gap design provides a space-saving arrangement between the first and second filter in their operational position. At the same time, protecting the second filter from liquid o cleaning the first filter is realized with low effort.
  • the 'gap width' relates to an average value of the width.
  • the opposing surfaces of the filters between which the gap is formed may be parallel such that the width is constant.
  • the opposing surfaces may be inclined to each other such that a wedge-like gap is formed. Or one or both surfaces may be curved.
  • the first filter has a rear surface which is oriented in air flow direction towards the (front surface of the) second filter.
  • the air gap is dimensioned such that liquid flowing along the rear surface of the first filter is not contacting a front surface of the second filter. This dimension of the air gap is a further o advantage measure for protecting the second filter against undesired wetting during
  • the rear surface of the second filter is particularly defined as a surface pointing to the exit direction of drying air flowed through the first filter.
  • the front surface of the second filter is particularly defined as a surface facing the rear surface of the first filter and/or as a surface oriented towards the inflowing air to be filtered by the second 5 filter.
  • the rear surface of the first filter faces the second filter, in particular the front surface of the second filter.
  • the support structure is provided by a filter unit of the filter system.
  • the filter unit preferably comprises a door or lid adapted to close an opening of the o air channel of the apparatus.
  • the door or lid By providing the filter unit and (where applicable) the door or lid, the removal of the filters from their operational position is simple and user- friendly. Further the door or lid is adapted to act as alignment element that (additionally) aligns the filters to the correct 5 operational positions of the filters in the air channel. This ensures that the filters are placed in their correct operational position within the air channel thus preventing the drying air (which may contain impurities, lint, etc. from the drying process) to by-pass at least one of the filters and to enter into an undesired space, particularly inside the heat exchanger. Combining the door or lid with the filters offers a mechanical connection such that the whole filter system is insertable or extractable from the apparatus by only one simple user action.
  • the filter unit is adapted to be linearly or in a swinging or rotating movement inserted and extracted from the air channel.
  • the filter unit comprises a first filter frame for supporting the first filter and/or a second filter frame or chamber for supporting and receiving the second filter. This construction design facilitates removing or changing the filters separately or individually.
  • the first filter can be understood as a "coarse" filter in the meaning that it removes the main volume or load of the fluff, lint, etc. from the drying 5 air.
  • the second filter has at least one of the following features:
  • the second filter can be understood to be a "fine" filter in the meaning 'adapted to remove' the fine or small particles which passed the first filter or which were not caught by the first filter.
  • first filter or the second filter or the first and second filters have hydrophobic surface properties or characteristics.
  • Inexpensive bulk material can be provided to realize the filters.
  • the bulk material may be any suitable hydrophobic material or may be provided with a surface finish or coating having hydrophobic properties.
  • a first filter has hydrophobic properties adapted to prevent water sticking on the filter surface during cleaning. The hydrophobic property avoids or reduces the first filter becoming wet, which could hinder the drying air to pass freely the first filter and subsequently could reduce the dryer performance.
  • the first and second supporting positions in the support structure of the filter system are aligned such that when the first filter and the second filter are in their respective operational position, the first and second filters are oriented inclined to each other, and
  • the first supporting position is aligned such that, when the first filter is in its operational position, the first filter is inclined relative to the vertical axis.
  • one or more surface planes of the first and second filters are inclined to each other.
  • a useful distance between the first and second filter can be designed (e.g. for realizing an air gap or for protecting the second filter from liquid during a first filter cleaning process).
  • the angle of inclination between the first and second filter or of the first filter relative to the vertical axis is equal to or greater than 2°, 3°, 5°, 10° or is in the range from 1° to 4°, 2° to 5° or 3° to 10°.
  • the support structure of the filter system comprises one or more of the following features:
  • At least one latch or clip or at least one clamping arrangement for securing the first filter, the second filter or the first and second filter in the respective operational position within the filter system
  • low-cost parts provide a stable structure of the filter system and a stable position of the filter system relative to the air channel.
  • the first filter has a curvature.
  • a first surface 5 of the first filter through which the drying air to be cleaned enters has a curvature.
  • Such a curvature provides sufficient dispersion of the supplied cleaning liquid across the whole first filter surface to be cleaned.
  • the curvature is adapted to compensate potential production tolerances and subsequently potential misalignments between the filter wet cleaning unit (in particular its nozzle) and the first filter.
  • the curvature extends preferably along a vertical section,
  • the plane of this section is perpendicular to the first surface of the first filter.
  • the first surface is opposite the surface of the first filter which is facing the second filter or is pointing towards the incoming drying air flow.
  • the first filter has a first curvature and a second curvature, wherein the first curvature is in a vertical direction and the second curvature is in a horizontal direction.
  • the surface of the first filter has a trough-like or valley-like shape adapted to horizontally concentrate a flow of liquid when the liquid is flowing from an upper region of the first filter to a lower region of the first filter.
  • the first filter is supported by the support structure which comprises a frame or grill for imposing the curvature to the first filter.
  • the support structure which comprises a frame or grill for imposing the curvature to the first filter.
  • a laundry drying apparatus in particular a dryer or a washer-dryer
  • a laundry drying apparatus comprises a o cabinet and a laundry storing compartment arranged within the cabinet.
  • a laundry storing compartment and an air channel are arranged within the cabinet.
  • the air channel is adapted to guide drying air from at least one air outlet of the laundry storing compartment.
  • a filter system is arranged within the air channel downstream the laundry storing compartment.
  • the laundry drying apparatus comprises a heat exchanger arranged within the 5 air channel and being adapted to cool the drying air, wherein the filter system is arranged upstream the heat exchanger.
  • the laundry drying apparatus comprises a filter wet cleaning unit having a nozzle for supply liquid for cleaning or washing the filter system. The nozzle is arranged to direct the liquid flowing out of the nozzle towards the front surface of the filter system.
  • the filter system comprises at least one filter alignment element adapted to cooperate with 5 at least one counter- alignment element provided at the filter wet cleaning unit or at the air channel. Making a mechanical cooperation of the at least one filter alignment element and the at least one counter-alignment element the first filter is positionally aligned with the nozzle of the filter wet cleaning unit.
  • the filter system comprises a liquid guiding element adapted to cooperate with the nozzle of the filter wet cleaning unit such as to guide or assisting by guiding the liquid supplied from the nozzle of the filter wet cleaning unit towards the first filter.
  • the at least one filter alignment element is adapted to align accurately the filter system and subsequently the first filter relative to the nozzle when the filter system is inserted into the operational position within or at the air channel.
  • the at least one filter alignment element may be arranged at the filter system in combination with the liquid guiding element.
  • the liquid guiding element may have at the same time o functional properties of being a filter alignment element.
  • any feature of any laundry drying apparatus and/or filter system disclosed in the claims and/or the description and/or the figures may be applied to this laundry drying apparatus (having a filter alignment element or liquid guiding element) individually or in any 5 arbitrary combination or sub-combination.
  • a filter system for a laundry drying apparatus comprises a first lint filter (first filter) and a second lint filter (second filter). Further this filter system comprises a support structure o having a first supporting position adapted to support the first filter and a second supporting position adapted to support the second filter.
  • first and second filters are placed in the first and second supporting positions (first and second filter positions), respectively, the first and second filters are neighboring to each other or arranged adjacent to each other.
  • the first filter is adapted to be washed or cleaned by liquid.
  • an air gap is formed between the first filter and second filter.
  • first, second and/or third aspects of the invention can be mutually combined with any of the first, second or third aspect and any of the first, second or third aspects can be combined with individual features or subcombinations of features of any of the below detailed embodiments.
  • Fig. 1 a schematic view of a laundry treatment apparatus
  • Fig. 2 a perspective view of a part of a filter system having a first filter and a second filter
  • Fig. 3 a a front view of the filter system according to Fig. 2,
  • Fig. 3b a side sectional view according to the section line III - III in Fig. 3a,
  • Fig. 4 a side sectional view of the filter system similar to Fig. 3b, but in-situ within a laundry treatment apparatus, showing the cooperation between the first filter and a nozzle,
  • FIG. 5 an enlarged side sectional view of the detail V in Fig. 9, showing aligned
  • Fig. 6 a perspective front view of the filter system according to Fig. 9,
  • Fig. 7 a perspective rear view of the filter system according to Fig. 9,
  • Fig. 8 a front view of a basement of a laundry drying apparatus
  • Fig. 9 a side sectional view of the basement according to the section line FX -FX in Fig. 8, showing a filter system in operational position within the laundry drying apparatus
  • Fig. 10a a perspective view of a laundry drying apparatus, showing a cabinet opening in an opened position hereby providing access to the inserted filter system
  • Fig. 10b the laundry drying apparatus according to Fig. 10a, showing the extraction of the filter system out of the apparatus in a first embodiment
  • Fig. 10c the laundry drying apparatus according to Fig. 10a, showing the extraction of the filter system out of the apparatus in a further embodiment
  • FIG. 11 a perspective view of the filter system according to Fig. 10a - Fig. 10c,
  • Fig. 12 a top view of the filter system according to Fig. 11,
  • Fig. 13 a side sectional view of the filter system according to the section line XIII - XIII in Fig. 12,
  • Fig. 14 a perspective view of the filter system according to Fig. 11, showing the filter system in a detached state
  • Fig. 15 a perspective view of the filter frame elements in a detached state
  • Fig. 16 a perspective rear view of the filter frame elements according to Fig. 15,
  • Fig. 17 a perspective front view of a filter system in a further embodiment
  • Fig. 18 a perspective partial view of a laundry drying apparatus, showing the filter
  • Fig. 1 shows schematically depicted a laundry drying apparatus 2 which in brief is denoted “apparatus” and is a heat pump tumble dryer in this embodiment.
  • the tumble dryer 2 comprises a partly and schematically depicted cabinet 3 which supports or encloses components and parts exemplarily described hereinafter.
  • the cabinet 3 encloses a heat pump system 4, including a closed refrigerant loop 6 which comprises in the following order of refrigerant flow B: a first heat exchanger 10 acting as evaporator for evaporating the refrigerant and cooling drying air, a compressor 14, a second heat exchanger 12 acting 5 as condenser for cooling the refrigerant and heating the drying air, and an expansion device 16 from where the refrigerant is returned to the first heat exchanger 10.
  • the heat pump system 4 forms the refrigerant loop 6 through which the refrigerant is circulated by the compressor 14 as indicated by arrow B.
  • the drying air flow A within the apparatus 2 is guided through a compartment 18 of the home appliance 2, i.e. through a compartment for receiving articles to be treated, e.g. a drum 18.
  • the articles to be treated are laundry 19, textiles or the like.
  • the drying air flow is indicated by arrows A in Fig. 1 and is driven by a drying air blower 8.
  • a drying air5 channel 20 guides the drying air flow A outside the drum 18 and includes different
  • the drying air exiting the second heat exchanger 12 flows into a rear channel 20b in which the drying air blower 8 is arranged.
  • the air conveyed by the blower 8 is guided upward in a rising channel 20c to the backside of the o drum 18 which has one or more drum inlets 26for the drying air.
  • the air is exiting the drum 18 through the drum outlet 28 (which corresponds to the loading opening 21 of the drum 18, wherein during drying operation the loading opening 21 is covered by a loading door 24) is optionally filtered by an optional fluff filter 22 arranged close to the drum outlet 28, e.g. in or at the channel 20.
  • the optional fluff filter 22 is 5 arranged in a front channel 20d forming another section of the channel 20 which is
  • the condensate formed at the first heat exchanger 10 is collected and guided to a condensate collector 30 which is connected to an extractable condensate drawer 40 via a drain pipe 46, a drain pump 36 and a drawer pipe 50. I.e. the collected condensate can be pumped from the collector 30 to the o drawer 40 which is arranged at an upper portion of the apparatus 2 from where it can be comfortably withdrawn and emptied by a user.
  • a filter system 52 is arranged in the cabinet 3 of the apparatus 2 to catch lint, fluff and other particles from the drying air before this drying air enters the first 5 heat exchanger 10.
  • the filter system 52 is arranged within the air channel 20 downstream the drum 18 and upstream the first heat exchanger 10. Particularly, the filter system 52 is arranged in the basement 5 which is arranged at a bottom region of the apparatus 2.
  • Fig. 2 shows some elements of the filter system 52. It comprises a first lint filter 54 and a second lint filter 56.
  • the filter system 52 comprises a support structure 58 for supporting the filters 52, 54.
  • the support structure 58 comprises a rectangular first filter frame 60 5 having a first supporting position for supporting the first filter 54.
  • the support structure 58 further comprises a rectangular second filter frame 62 having a second supporting position adapted to support the second filter 56.
  • the drying air flow A first enters a front surface 64 of the l o first filter 54 whereas a rear surface 66 of the first filter 54 is directed towards or is facing the second filter 56 (Fig. 3a, Fig. 3b).
  • Fig. 3b shows the first and second filters 54, 56 placed in their first supporting position and second supporting position, respectively, wherein the positions are such that an air gap 68 is formed between the first filter 54 and second filter 56.
  • the air gap 68 is approximately wedge-shaped.
  • the 15 width of the air gap 68 along the lateral direction 96 is dimensioned preferably at least 1.5 mm, 2 mm, 4 mm or 5 mm. in the embodiment shown the width is a maximum width of the wedge-shaped gap at the lower end.
  • the gap width between the filters may be constant or variable within e.g. less than 80%, 60% or 30% variation from a mean gap width.
  • the first filter frame 60 is carrying a grill 63 or grid which is adapted to keep the first filter 54 in a desired surface form, e.g. a flat plane in this embodiment.
  • a desired surface form e.g. a flat plane in this embodiment.
  • the surface plane is spanned by a horizontal direction 75 and a surface direction 77.
  • Fig. 3b and Fig. 4 show that the first and second supporting positions of the first and second filters 54, 56 are aligned such that when the first and second filters 54, 56 are in their respective operational positions, the first filter 54 and the second filter 56 are oriented inclined to each other. Additionally, the first filter 54 is inclined relative to a vertical axis 30 110 of the support structure 58 extending in parallel to the vertical direction 76 or in
  • the angle 112 of inclination between the first filter 54 and second filter 56 and of the first filter 54 relative to the vertical axis 110 is preferably equal to or greater than 2°, 3°, 5°, 10° or is preferably in the range from l° to 4°, 2° to 5° or 3° to 10°.
  • the apparatus 2 comprises a filter wet cleaning unit 70 as shown in Fig. 4.
  • This wet cleaning unit 70 has a nozzle 72 for supplying liquid for washing the first filter 54.
  • the nozzle 72 is arranged to direct the liquid flowing out of the nozzle 72 towards the front surface 64 of the first filter 54.
  • the first filter 54 is configured and arranged relative to the nozzle 72 to (at least substantially) screen or protect the second filter 56 from undesired contact with liquid flowing out of the nozzle 72.
  • the nozzle 72 is dimensioned and adapted to distribute the liquid over or essentially over the full horizontal width 74 of the front surface 64 of the first filter 54 (Fig. 3a).
  • the horizontal width 74 extends parallel to a horizontal direction 75, whereas the horizontal direction 75 extends perpendicular to the vertical direction 76.
  • a surface direction 77 of the first filter 54 is inclined relative to the vertical direction 76.
  • the horizontal direction 75 and the surface direction 77 span the surface plane of the first filter 54, particularly its front surface 64.
  • the nozzle 72 is arranged at or within the air channel 20 relative to the first filter 54 such as to supply the liquid to an upper region 80 and preferably to the top front edge of the first filter 54.
  • one nozzle outlet 78 is shown.
  • the nozzle 72 may have two, three or more nozzle outlets 78 which are preferably arranged distributed and spaced along the horizontal direction 75.
  • the at least one nozzle outlet 78 is adapted to direct the liquid towards the first filter 54.
  • the at least one nozzle outlet 78 is an elongated outlet having an elongated extension along the horizontal direction 75 and particularly in parallel to the front surface 64 of the first filter 54.
  • the liquid is flowing out of the nozzle 72 along a flow direction 82 which is particularly in parallel to the vertical direction 76 (Fig. 4).
  • the front surface 64 of the first filter 54 extends in surface direction 77.
  • the flow direction 82 and the surface direction 82 are inclined to each other by an inclination angle 84.
  • the nozzle 72 is oriented relative to the front surface 64 of the first filter 54 such that the liquid flowing out of the nozzle 72 hits the front surface 64 of the first filter 54 approximately under the inclination angle 84.
  • the inclination angle is about 3°.
  • the liquid flowing out of the nozzle 72 according to the embodiment in Fig. 5 hits the front surface 64 of the first filter 54 under a greater inclination angle 85 than the inclination angle 84 due to a liquid guiding element 86 to be explained in more detail below.
  • the filter system 52 and the filters 54, 56 are placed in their respective operational positions within the apparatus (not shown in detail here).
  • the nozzle 72 of the filter wet cleaning unit 70, the first filter 54 and the second filter 56 are arranged such that the first filter 54, in particular its front surface 64, forms a screen adapted to prevent liquid flowing out of the nozzle 72 to reach onto the surface of the second filter 56.
  • the air gap 68 is dimensioned such that liquid flowing along the rear surface 66 of the first filter 54 is not contacting a front surface 57 of the second filter 56 (Fig. 3b, Fig. 4).
  • Fig. 5 shows in cross section a wedge-like filter alignment element 88 being part of the filter system 52.
  • This element 88 interacts with a nozzle wall section 90 in the region of its nozzle outlet 78.
  • the wall section 90 is acting as a counter-alignment and/or abutting element.
  • the mechanical cooperation of the wall section 90 and the filter alignment element 88 enables the first filter 54 to be positionally aligned with the nozzle 72.
  • the filter system 52 and subsequently the first filter 54 to be cleaned is accurately positioned with respect to the nozzle outlet 78 by effecting a positioning mechanical contact between the filter alignment element 88 and the counter- alignment element 90.
  • the counter-alignment element 90 is replaced or
  • the embodiment of the filter alignment element 88 according to Fig. 5 is acting at the same time as a liquid guiding element 86 (mentioned above).
  • This element 86 is adapted to cooperate with the nozzle 72 such that the element 86 has a guiding or assisting function by guiding the liquid supplied from the nozzle outlet 78 towards the first filter 54.
  • the filter system 52 comprises at least one filter alignment element 88 and a separate liquid guiding element 86.
  • the design or shape of the liquid guiding element 86 is adapted to achieve an efficient distribution of the liquid across the front surface 64 to clean the first filter 54 from top to bottom.
  • the liquid guiding element has an elongated vane shape (Fig. 6, Fig. 7).
  • the liquid guiding element 86 is adapted to laterally expand the width of the nozzle 72 such that the lateral width (which extends along a lateral direction 96) of a liquid curtain exiting the nozzle outlet 78 is expanded in lateral width thus enabling a uniform cleaning of the first filter 54, preferably along its complete lateral width along the lateral direction 96.
  • the liquid guiding element 86 has a liquid guiding surface 92 which is inclined relative to the flow direction 82 or vertical direction 76 (Fig. 5, Fig. 6, Fig. 7).
  • the liquid guiding element 86 is inclined towards the front surface 64 of the first filter 54 in a vertical downward direction.
  • a gap 94 is achieved between the front surface 64 of the first filter 54 and the liquid guiding element 86.
  • This gap 94 can be regarded as an extension of the nozzle 72 or its nozzle outlet 78.
  • the gap 94 and the liquid guiding element 86 are arranged upstream the first filter 54 with respect to the drying air flow A.
  • FIG. 7 show the liquid guiding element 86 and the filter alignment element 88 (already known from Fig. 5) in a perspective view.
  • This element 86, 88 is arranged at the support structure 58, wherein in Fig. 6 and Fig. 7 only the first filter 54 is shown.
  • the first filter 54 is preferably a thin (e.g. thickness of or less than 1 mm, 0.8 mm, 0.5 mm or 0.3 mm) mesh-type filter whereas the second filter 56 is substantially thicker (e.g. thickness in the range of 3 to 20 mm, 3 to 5 mm, 4 to 8 mm, 6 to 10 mm or 8 to 20 mm) than the first filter 54.
  • the second filter 56 is a non-woven type filter (e.g. foam material, PU foam).
  • the wet cleaning unit 70 may be controlled by a controller of the dryer (not shown) such that the first filter 54 is automatically washed/cleaned at a defined time and/or predefined periods, preferably and/or after every drying cycle.
  • the second filter 56 is not washed by the wet cleaning unit 70 but its material and form structure is adapted to collect fine particles by the second filter 56 for long periods of dryer operation time, i.e. over many drying cycles, before it is necessary to replace/change or clean the second filter 56 by the user.
  • FIG. 8 shows the bottom region of the apparatus 2 having the basement 5 where the filter system 52 is inserted in its operational position.
  • the air channel 20 comprises a channel opening 98 which can be closed by inserting the filter system 52 in its operational position (Fig. 1, Fig. 8, Fig. 9).
  • the support structure 58 has a filter unit 59 which comprises a door 100 or lid adapted to close the channel opening 98.
  • Fig. 10a shows the apparatus 2 with the filter system 52 inserted in its operational position.
  • the door 100 of the filter system 52 is arranged adjacent to a cabinet opening 102 (air channel opening).
  • the door 100 and the cabinet opening 102 are covered by a pivotable cabinet door 104 shown in Fig. 10a in the opened position.
  • Fig. 10b shows the filter unit 59 according to Fig. 10a but being in a partially extracted position relative to the air channel 20.
  • the air channel 20 is opened at the channel opening 98.
  • the filter unit 59 can be extracted and again be inserted by a swing-like movement or a rotational movement.
  • Fig. 10c shows a further embodiment, according to which the filter unit 59 is extracted from the air channel 20 by making a linear movement. Insertion of this filter unit 59 into the channel opening 98 is again made by a linear movement.
  • the door 100 being part of the filter unit 59 (more generally of the support structure 58) provides a user-friendly handling of the filter system 52.
  • the filter system 52 is insertable into the air channel 20 and extractable therefrom by simply handling it at the door 100.
  • the door 100 comprises a latch 106 which is pivotably mounted at the door and movable by a handle 108 (Fig. 11, Fig. 13, Fig. 14).
  • a handle 108 Fig. 11, Fig. 13, Fig. 14
  • FIG. 12 shows that the bottom region of the support structure 58 comprises an elongated, approximately rectangular hole 116. This hole 116 provides a passage for the supplied liquid to drop or flow down into a liquid chamber of the basement 5 below the filter structure 58.
  • Fig. 13 shows a deflecting wall 118 being part of the support structure 58.
  • the curved surface of the wall 118 supports guiding the drying air towards the first heat exchanger 10 and thereby reducing the flow resistance. Additionally the wall 118 guides the supplied liquid towards the hole 116 for draining the liquid out of channel 20.
  • FIG. 14 to Fig. 16 show clamping arrangements for securing the first filter 54 and the second filter 56 in the respective operational position at the support structure 58 and within the filter system 52.
  • a first clamping arrangement comprises two parallel side elements 120 which are mounted at a rear side of the door 100 (Fig. 14). Each of the rear edges of the side elements 120 cooperate and/or mate with a respective slot- like recess 122. The recesses 122 are arranged at the first filter frame 60.
  • An additional clamping arrangement is provided to secure the first filter 54 and second filter 56 with each other (Fig. 15, Fig. 16).
  • the first filter frame 60 comprises one or more snap-in elements 124 (e.g. detents, studs, bolts, recesses) mating or cooperating with respective one or more counter-elements (e.g. at least one groove, recess or hole, pins, bolts) arranged at the second filter frame 62 (not shown in detail).
  • snap-in elements 124 e.g. detents, studs, bolts, recesses
  • counter-elements e.g. at least one groove, recess or hole, pins, bolts
  • both filters 54, 56 could be separated easily from each other (e.g. for replacing one of the filters 54, 56 or for cleaning the second filter 56) by detaching the snap-in elements 124 from the counter-elements.
  • the clamping functions explained according to Fig. 14 to Fig. 16 may be implemented by at least one latch or clip or any other appropriate element.
  • Fig. 17 shows a further embodiment of the first filter 54.
  • the front surface 64 and consequently the first filter 54 have a curvature 126.
  • the cross section of the curvature 126 extends particularly along the vertical direction 76.
  • the first filter 54 may have a first curvature and a second curvature, wherein the first curvature extends along the vertical direction 76 and the second curvature extends along the horizontal direction 75.
  • the first filter 54 may have a trough-like or valley-like shape or curvature. This trough-like or valley-like shape is preferably adapted to horizontally concentrate a flow of liquid when the liquid is flowing from an upper region 80 of the first filter 54 to a lower region 81 of this filter 54.
  • the first filter 54 is supported by the support structure 58 comprising a curved first filter frame 60 and a grill 63 comprising curved ribs 128.
  • the curved frame 60 and the curved ribs 128 impose the curvature 126 to the first filter 54. This may be easily realized when the first filter 54 has flexible properties.
  • the support structure 58 according to Fig. 17 is adapted to support also the second filter 56.
  • Fig. 18 shows the embodiment of the filter system 52 according to Fig. 17 being in its operational position, i.e. in its inserted position within the basement 5 of the apparatus 2.
  • the filter system 52 is manually extractable out of the basement 5 and can be inserted back therein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

L'invention concerne un appareil de séchage de linge, en particulier un sèche-linge ou lave-linge/sèche-linge. L'appareil de séchage de linge comprend un habillage et un compartiment de stockage de linge disposé à l'intérieur de l'habillage. Un conduit d'air (20) est disposé à l'intérieur de l'habillage et adapté pour guider l'air de séchage (A) depuis au moins une sortie d'air du compartiment de stockage de linge. Un système de filtre (52) disposé dans le conduit d'air (20) en aval du compartiment de stockage de linge comprend un premier filtre à peluches (54) et un deuxième filtre à peluches (56). Une unité de nettoyage humide de filtre (70) comprend une buse (72) servant délivrer un pour laver le premier filtre (54). La buse (72) est disposée de façon à diriger le liquide s'écoulant hors de la buse (72) vers la surface avant (64) du premier filtre (54).
PCT/EP2014/078012 2014-12-16 2014-12-16 Appareil de séchage du linge avec système de filtre WO2016095970A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201480084036.0A CN107002343B (zh) 2014-12-16 2014-12-16 具有过滤器系统的衣物干燥设备
PCT/EP2014/078012 WO2016095970A1 (fr) 2014-12-16 2014-12-16 Appareil de séchage du linge avec système de filtre
AU2014414436A AU2014414436B2 (en) 2014-12-16 2014-12-16 Laundry drying apparatus with a filter system
EP14823954.4A EP3234255B1 (fr) 2014-12-16 2014-12-16 Appareil de séchage du linge avec système de filtre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/078012 WO2016095970A1 (fr) 2014-12-16 2014-12-16 Appareil de séchage du linge avec système de filtre

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WO2016095970A1 true WO2016095970A1 (fr) 2016-06-23

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CN (1) CN107002343B (fr)
AU (1) AU2014414436B2 (fr)
WO (1) WO2016095970A1 (fr)

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EP3118367A1 (fr) * 2015-07-15 2017-01-18 Miele & Cie. KG Seche-linge
EP3282050A1 (fr) * 2016-08-10 2018-02-14 Whirlpool Corporation Séchoir sans maintenance comportant de multiples filtres à peluches autonettoyants
WO2018121872A1 (fr) * 2016-12-29 2018-07-05 Electrolux Appliances Aktiebolag Sèche-linge comprenant un ensemble filtre et procédé de nettoyage d'ensemble filtre
WO2018121870A1 (fr) * 2016-12-29 2018-07-05 Electrolux Appliances Aktiebolag Sèche-linge comprenant un ensemble filtre et procédé pour nettoyer un ensemble filtre
WO2018121867A1 (fr) * 2016-12-29 2018-07-05 Electrolux Appliances Aktiebolag Sèche-linge comprenant un ensemble filtre et procédé pour nettoyer un ensemble filtre
WO2018121868A1 (fr) * 2016-12-29 2018-07-05 Electrolux Appliances Aktiebolag Sèche-linge comprenant un ensemble filtre et procédé pour nettoyer un ensemble filtre
IT201700021434A1 (it) * 2017-02-24 2018-08-24 S P M Eng S R L Gruppo filtrante dell’aria di una macchina di trattamento di biancheria
US10087569B2 (en) 2016-08-10 2018-10-02 Whirlpool Corporation Maintenance free dryer having multiple self-cleaning lint filters
WO2019145041A1 (fr) * 2018-01-26 2019-08-01 Electrolux Laundry Systems Sweden Ab Sèche-linge
EP3575482A1 (fr) * 2018-05-30 2019-12-04 BSH Hausgeräte GmbH Dispositif de filtration pour une machine de traitement du linge et machine de traitement du linge dotée d'un tel dispositif de filtration
US10502478B2 (en) 2016-12-20 2019-12-10 Whirlpool Corporation Heat rejection system for a condenser of a refrigerant loop within an appliance
US10514194B2 (en) 2017-06-01 2019-12-24 Whirlpool Corporation Multi-evaporator appliance having a multi-directional valve for delivering refrigerant to the evaporators
US10519591B2 (en) 2016-10-14 2019-12-31 Whirlpool Corporation Combination washing/drying laundry appliance having a heat pump system with reversible condensing and evaporating heat exchangers
US10544539B2 (en) 2017-02-27 2020-01-28 Whirlpool Corporation Heat exchanger filter for self lint cleaning system in dryer appliance
US10718082B2 (en) 2017-08-11 2020-07-21 Whirlpool Corporation Acoustic heat exchanger treatment for a laundry appliance having a heat pump system
US10738411B2 (en) 2016-10-14 2020-08-11 Whirlpool Corporation Filterless air-handling system for a heat pump laundry appliance
US11015281B2 (en) 2017-09-26 2021-05-25 Whirlpool Corporation Laundry appliance having a maintenance free lint removal system
US11047085B2 (en) 2016-12-29 2021-06-29 Electrolux Appliances Aktiebolag Laundry dryer comprising a filter assembly and a method to clean a filter assembly

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WO2019043965A1 (fr) * 2017-09-01 2019-03-07 シャープ株式会社 Dispositif de traitement de vêtements
DE102019210546A1 (de) * 2019-07-17 2021-01-21 BSH Hausgeräte GmbH Haushaltsgerätefilter und Haushaltsgerät damit

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EP2202349A2 (fr) * 2008-12-22 2010-06-30 BSH Bosch und Siemens Hausgeräte GmbH Appareil de séchage de linge et procédé de nettoyage d'un crible
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Cited By (34)

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Publication number Priority date Publication date Assignee Title
EP3118367A1 (fr) * 2015-07-15 2017-01-18 Miele & Cie. KG Seche-linge
EP3282050A1 (fr) * 2016-08-10 2018-02-14 Whirlpool Corporation Séchoir sans maintenance comportant de multiples filtres à peluches autonettoyants
EP3282049A1 (fr) * 2016-08-10 2018-02-14 Whirlpool Corporation Séchoir sans maintenance comportant de multiples filtres à peluches autonettoyants
US10633785B2 (en) 2016-08-10 2020-04-28 Whirlpool Corporation Maintenance free dryer having multiple self-cleaning lint filters
US10087569B2 (en) 2016-08-10 2018-10-02 Whirlpool Corporation Maintenance free dryer having multiple self-cleaning lint filters
US11542653B2 (en) 2016-10-14 2023-01-03 Whirlpool Corporation Filterless air-handling system for a heat pump laundry appliance
US11299834B2 (en) 2016-10-14 2022-04-12 Whirlpool Corporation Combination washing/drying laundry appliance having a heat pump system with reversible condensing and evaporating heat exchangers
US10738411B2 (en) 2016-10-14 2020-08-11 Whirlpool Corporation Filterless air-handling system for a heat pump laundry appliance
US10519591B2 (en) 2016-10-14 2019-12-31 Whirlpool Corporation Combination washing/drying laundry appliance having a heat pump system with reversible condensing and evaporating heat exchangers
US10502478B2 (en) 2016-12-20 2019-12-10 Whirlpool Corporation Heat rejection system for a condenser of a refrigerant loop within an appliance
CN110114529B (zh) * 2016-12-29 2021-07-06 伊莱克斯家用电器股份公司 包括过滤器组件的衣物干燥机和清洁过滤器组件的方法
US11047085B2 (en) 2016-12-29 2021-06-29 Electrolux Appliances Aktiebolag Laundry dryer comprising a filter assembly and a method to clean a filter assembly
AU2016434849B2 (en) * 2016-12-29 2023-09-07 Electrolux Appliances Aktiebolag A laundry dryer comprising a filter assembly and a method to clean a filter assembly
CN110114529A (zh) * 2016-12-29 2019-08-09 伊莱克斯家用电器股份公司 包括过滤器组件的衣物干燥机和清洁过滤器组件的方法
WO2018121872A1 (fr) * 2016-12-29 2018-07-05 Electrolux Appliances Aktiebolag Sèche-linge comprenant un ensemble filtre et procédé de nettoyage d'ensemble filtre
WO2018121870A1 (fr) * 2016-12-29 2018-07-05 Electrolux Appliances Aktiebolag Sèche-linge comprenant un ensemble filtre et procédé pour nettoyer un ensemble filtre
US11154910B2 (en) 2016-12-29 2021-10-26 Electrolux Appliances Aktiebolag Laundry dryer comprising a filter assembly and a method to clean a filter assembly
WO2018121867A1 (fr) * 2016-12-29 2018-07-05 Electrolux Appliances Aktiebolag Sèche-linge comprenant un ensemble filtre et procédé pour nettoyer un ensemble filtre
WO2018121868A1 (fr) * 2016-12-29 2018-07-05 Electrolux Appliances Aktiebolag Sèche-linge comprenant un ensemble filtre et procédé pour nettoyer un ensemble filtre
IT201700021434A1 (it) * 2017-02-24 2018-08-24 S P M Eng S R L Gruppo filtrante dell’aria di una macchina di trattamento di biancheria
US10544539B2 (en) 2017-02-27 2020-01-28 Whirlpool Corporation Heat exchanger filter for self lint cleaning system in dryer appliance
US11920288B2 (en) 2017-02-27 2024-03-05 Whirlpool Corporation Heat exchanger filter for self lint cleaning system in dryer appliance
US11634856B2 (en) 2017-02-27 2023-04-25 Whirlpool Corporation Heat exchanger filter for self lint cleaning system in dryer appliance
US11142864B2 (en) 2017-02-27 2021-10-12 Whirlpool Corporation Heat exchanger filter for self lint cleaning system in dryer appliance
US10514194B2 (en) 2017-06-01 2019-12-24 Whirlpool Corporation Multi-evaporator appliance having a multi-directional valve for delivering refrigerant to the evaporators
US10823479B2 (en) 2017-06-01 2020-11-03 Whirlpool Corporation Multi-evaporator appliance having a multi-directional valve for delivering refrigerant to the evaporators
US10718082B2 (en) 2017-08-11 2020-07-21 Whirlpool Corporation Acoustic heat exchanger treatment for a laundry appliance having a heat pump system
US11015281B2 (en) 2017-09-26 2021-05-25 Whirlpool Corporation Laundry appliance having a maintenance free lint removal system
US11739472B2 (en) 2017-09-26 2023-08-29 Whirlpool Corporation Laundry appliance having a maintenance free lint removal system
WO2019145041A1 (fr) * 2018-01-26 2019-08-01 Electrolux Laundry Systems Sweden Ab Sèche-linge
JP7208243B2 (ja) 2018-01-26 2023-01-18 エレクトロラックス プロフェッショナル アクティエボラーグ（パブリーク） 回転式乾燥機
JP2021514215A (ja) * 2018-01-26 2021-06-10 エレクトロラックス プロフェッショナル アクティエボラーグ（パブリーク） 回転式乾燥機
EP3575482A1 (fr) * 2018-05-30 2019-12-04 BSH Hausgeräte GmbH Dispositif de filtration pour une machine de traitement du linge et machine de traitement du linge dotée d'un tel dispositif de filtration
CN110552180A (zh) * 2018-05-30 2019-12-10 Bsh家用电器有限公司 用于洗涤物处理机的过滤器设备以及相关的洗涤物处理机

Also Published As

Publication number Publication date
CN107002343B (zh) 2020-03-10
AU2014414436A1 (en) 2017-05-18
EP3234255B1 (fr) 2019-05-15
EP3234255A1 (fr) 2017-10-25
AU2014414436B2 (en) 2020-06-25
CN107002343A (zh) 2017-08-01

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