EP2511414B1 - Filtersystem für Wäschetrockner - Google Patents

Filtersystem für Wäschetrockner Download PDF

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Publication number
EP2511414B1
EP2511414B1 EP11425106.9A EP11425106A EP2511414B1 EP 2511414 B1 EP2511414 B1 EP 2511414B1 EP 11425106 A EP11425106 A EP 11425106A EP 2511414 B1 EP2511414 B1 EP 2511414B1
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EP
European Patent Office
Prior art keywords
flow
wall
condenser
laundry
opening
Prior art date
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Application number
EP11425106.9A
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English (en)
French (fr)
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EP2511414A1 (de
Inventor
Aldo Fumagalli
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.)
Candy SpA
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Candy SpA
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Priority to EP11425106.9A priority Critical patent/EP2511414B1/de
Publication of EP2511414A1 publication Critical patent/EP2511414A1/de
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/22—Lint collecting arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements

Definitions

  • the present invention relates to a laundry dryer machine, wherein a flow of drying air is circulated through a path, which comprises a fan for moving said flow, a motor for driving said fan, at least one filter for filtering the flow, a drum for containing the laundry to be dried, a condenser with a plurality of channels for the flow of drying air, for removing the moisture absorbed by the flow through the laundry in the drum, a container for collecting the condensate removed from the flow of drying air, a box-like structure for containing the components of the machine, said structure having a base, a top surface, a front vertical wall, a back vertical wall and corresponding lateral vertical walls, an opening formed in said front vertical wall for loading the laundry to be dried and removing it at the end of the drying process, a door adapted to assume an open position and a closed position to open and close said opening for loading and removing laundry, a conduit for conveying a flow of cooling air to the condenser, said conduit having a fan, a motor for
  • Laundry dryer machines as described above are known in the art, examples thereof being disclosed in EP 1,990,464 and EP 1,925,713 .
  • the filter namely the filtration system which is required to at least partially remove the material released from the laundry during the drying process, e.g. lint of various natures, from the flow of drying air, is located near the basement of the containing structure of the machine, proximate the condensate tray.
  • the position of the filter near the base of the machine requires the provision of at least one opening with a door whose size conforms to the size of the filter, to allow inspection and removal for the required periodical revision and cleaning.
  • the provision of an opening and a door patent ly involves an increase of the manufacturing costs for the containing structure of the machine.
  • the filter can be only accessed after opening the door provided therefor, the user will likely be reluctant to perform the required periodic cleaning procedures.
  • the object of the present invention is to modify the filtration system for filtering the flow of drying air of a laundry dryer machine, to allow removal thereof for cleaning without providing the machine with a special inspection opening and corresponding door.
  • a further object is to improve the overall energy efficiency of the machine.
  • the laundry dryer machine of the invention comprises a box-like structure containing the various devices, which is comprised of a base 1, a top wall 2, a front vertical wall 3, a back vertical wall 4 and lateral vertical walls 5 and 6.
  • the containing structure houses the drum 7, which rotates about a generally horizontal axis X-X, and is adapted to contain the laundry to be dried, which is loaded and unloaded through an opening 8 formed in the front wall 3 of the containing structure.
  • the opening 8 is in the form of a tubular recess 3A of the wall whose axis is parallel to the axis of rotation X-X of the drum 7.
  • the opening 8 is closed by a door 8A, which is mounted in the wall 3 to be opened and closed by the user of the machine by conventional fastening and support means, which are not shown as they are unnecessary for the understanding of the present invention.
  • the door 8A of the prior art generally has the shape of a washing-machine window.
  • the drum 7 is conventionally mounted in such a configuration as to rotate by the action of support and drive means, which are known in the art and not shown, as they are unnecessary for the understanding of the present invention.
  • the laundry loaded into the drum 7 through the opening 8, which is closed by the door 8A, is dried by a flow of drying air, which is circulated through a path comprising a fan 9 for moving said flow, a motor 10 for driving said fan, at least one filter 11 for filtering the flow, the cavity of the drum 7 containing the laundry to be dried, a condenser 12 with a plurality of inner channels 13, a conduit 14 connecting the condenser 12 to the inlet 15 of the fan 9, with a manifold portion 16 for grouping the outlets of the condenser channels 13.
  • a conventional tray 17 is placed under the manifold portion 16 of the channel 14, for collecting the condensate obtained from the removal of moisture absorbed by the flow through the laundry in the drum 7.
  • the drying air path comprises a device 18 that heats the drying air flow if and when this is required by the operating cycle of the laundry dryer machine.
  • the heating device 18 conventionally consists of an electrical resistor.
  • the box-like containing structure also houses a conduit 19 for conveying a flow of drying air onto the condenser 12, said conduit being equipped with a fan 20 which, in the illustrated embodiment, is driven by the same electric motor 10 that drives the fan 9.
  • the fan 20 may be driven by a dedicated independent electric motor.
  • the conduit 19 has a first air intake opening 21 and a second exhaust opening 22, both openings 21 and 22 communicating with the environment outside the machine.
  • the drying air that flows through the conduit 19 moves across the condenser 12 through dedicated channels, referenced 23.
  • the condenser 12 is placed under the door 8A through which the laundry is loaded into the drum 7, more particularly in a niche 24 formed in the front vertical wall 3 of the containing structure, between the lower profile 25 of the door 8A and the upper wall of the portion 16 of the conduit 14.
  • the condenser 12 comprises at least one first and one second sections, referenced 12A and 12B respectively, in which respective portions of the channels 13, through which the drying air flows, are referenced 13A and 13B.
  • the two sections of the condenser 12 are vertically arranged one above the other, with their respective channel portions 13A and 13B aligned together to form a single channel 13.
  • a partition 26 is placed at the junction between the channel portions 13A and 13B, with holes 27 formed at the longitudinal axis of the channel portions 13A and 13B to ensure continuity of the channel 13.
  • Pads 28, for instance made of rubber or plastic, are placed adjacent to the through holes 27 and project out of both sides of the partition 26, thereby acting as seals to hold the channels 13 separate from the channels 23 through which the cooling air is caused to flow.
  • the channels When the condenser 12 is in its operating position in the niche 24, the channels extend from top to bottom, preferably in a vertical direction relative to the base 1 of the containing structure.
  • the channels 13 may be inclined to the base 1.
  • the channels 23 for the drying air flow extend transverse, preferably perpendicular to the direction of the channels 13.
  • each of the sections 12A and 12B of the condenser 12 has a rectangular parallelepiped shape and the niche 24 has a corresponding volumetric conformation, of slightly larger size, to allow insertion and removal of the individual sections 12A and 12B, or at least the first section 12A as well as proper positioning to ensure continuity of the channels 13.
  • first rod-like element 29 attached to one side of the section 12A and a second rod-like element 30 attached to one side of the second section 12B.
  • These elements 29 and 30 extend adjacent the sections 12A and 12B to a position beyond the entrance 31 of the niche 24, where their free ends 29A and 30A are bent, for instance, into hooks for manual grasping by a user.
  • the bottom 24A of the niche 24 has an opening 24B which communicates with the manifold portion 16 of the conduit 14 for circulation of the drying air flow.
  • conventional slide guides may be formed in the walls of the niche 24 and conventional counter-guides may be formed in the corresponding sides of the sections 12A and 12B, said guides and counter-guides being in mutual sliding engagement.
  • the opening of the door 8A for loading the laundry into the drum 7 allows immediate access to the entrance 31 of the niche 24, as well as immediate access to the ends 29A and 30A of the elements 29 and 30 for removal of the sections 12A and 12B of the condenser 12, thereby avoiding the need of providing specially dedicated doors for access to the condenser, unlike the prior art.
  • the door 8A has a contour with an essentially rectilinear section at the entrance 31 of the niche 24, the rest of the contour maintaining its circular shape.
  • the condenser 12 has the required overall size to ensure its function of exchanging heat between the hot moist flow of drying air and the flow of cooling air.
  • the vertical dimensions of the sections 12A and 12B are determined according to the available width of the opening 8 when the door 8A is opened to remove each section of the condenser first from the niche 24 and then out of the opening 8.
  • a condenser 12 composed of two sections 12A and 12B allows frequent cleaning of the section that is more exposed to the build-up of thread-like deposits circulated with the flow of drying air, i.e. the first section 12A, as the door 8A is opened for loading or unloading laundry.
  • the filter 11 inserted within the path of drying air is in the form of a tubular body inserted in the tubular recess 3A of the opening 8.
  • the cross section of the filter 11 conforms to that of the inner contour of the tubular recess of the opening 8, an annular channel 32 being thus formed between the wall 11A made of filter material of the filter 11 and the wall surrounding the recess 3A.
  • the filter 11 has a flange 11B which axially abuts against the inner edge 3B of the tubular recess thereby isolating said annular chamber 32 from the cavity of the drum 7.
  • the flow of drying air axially enters the tubular body of the filter 11 and exits therefrom to enter the annular gap 32. From the latter, it flows through the entrance 31 of the niche 24 into the channels 13 of the condenser 12 and moves to the bottom, where it enters the manifold portion 16 of the conduit 14, under the suction effect of the fan 9.
  • the position of the filter 11 within the opening 8 allows immediate inspection of the cleaning conditions of the filter as the door 8A is opened and particularly, if the tubular wall 11A of the filter 11 is dirty, the user will be motivated to clean it, even before removing the laundry at the end of a drying cycle.
  • the filter for the drying air flow comprises two curved hollow bodies, referenced 33 and 34 respectively, facing toward each other, in the contour of the tubular recess 3A of the opening 8.
  • Such curved hollow bodies 33 and 34 extend between a grid-like wall 35 that covers the upper part of the first section 12A of the condenser 12 and a wall opposed thereto, referenced 36, also in grid form, which forms a chamber with the envelope wall of the tubular recess 3A of the opening 8.
  • Each of the hollow bodies 33 and 34 is preferably composed of a front wall 33A, 34A and a respective back wall 33B, 34B, made of a filter material, spaced from the former to form respective compartments 33C and 34C.
  • the latter communicate with the chamber 37 through respective openings 33D and 34D, aligned with respective passages 36A and 36B of the wall 36.
  • the contour of the tubular recess 3A of the opening 8 has a first channel 38 located behind the hollow filtering body 33 and a second channel 39 behind the hollow filtering body 34. These channels extend parallel to the filtering walls 33B and 34B, are closed at their ends 38A and 39A and open at the other ends, where they open by their respective openings 38B and 39B into the first section 12A of the condenser 12, under the wall 35.
  • any clogging of the filtering bodies 33 and 34 is immediately ascertained by the user as he/she opens the door 8A. Therefore, cleaning may be carried out by the user, even before removing the dried laundry.
  • Cleaning of one or both filtering bodies 33 and 34 is carried out by manually removing them towards the interior of the opening 8, as shown in Figure 8 and by pulling them off the machine without requiring any special inspection door for the filtration system.
  • the provision of the filtering bodies 33 and 34 on opposed portions of the contour of the tubular recess 3A of the opening 8, with respective channels 38 and 39 for the flow facilitates circulation of the air flow as the rotation of the drum 7 is reversed. This is because, depending on the direction of rotation of the drum, the drying air will preferentially flow into one or the other of the channels 38 and 39, and hence through the filtering body 33 or the one referenced 34, with doubtless advantages in terms of energy efficiency of the machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (4)

  1. Eine Wäschetrocknungsmaschine, in der ein Trocknungsluftstrom durch einen Weg zirkuliert, umfassend:
    einen Lüfter (9) zum Bewegen des Luftstromes; einen Motor (10) zum Antreiben des Lüfters; mindestens einen Filter (33, 34) zum Filtern des Luftstromes; eine Trommel (7) zur Aufnahme der zu trocknenden Wäsche; einen Kondensator (12) mit einer Vielzahl von Kanälen (13) für die Strömung von Trocknungsluft, um die durch den Luftstrom absorbierte Feuchtigkeit der Wäsche in der Trommel zu entfernen; einen Behälter (17) zum Sammeln des aus dem Trocknungsluftstrom entfernten Kondensats; eine kastenartige Struktur zur Aufnahme der Maschinenkomponenten, wobei die kastenartige Struktur eine Basis (1), eine Oberseite (2), eine vordere senkrechte Wand (3), eine hintere senkrechte Wand (4) und entsprechende seitliche senkrechte Wände (5, 6) aufweist; eine Öffnung (8), in Form einer in der vorderen senkrechten Wand (3A) ausgebildeten rohrförmigen Ausnehmung, aufweisend eine rohrförmige Wand, deren Achse parallel zur Drehachse (X-X) der Trommel (7) ist, um die zu trocknende Wäsche in die Trommel zu laden und am Ende des Trocknungsprozesses zu entfernen; eine Tür (8A), die geeignet ist, eine offene Position und eine geschlossene Position einzunehmen, um die Öffnung zum Laden und Entfernen der Wäsche zu öffnen und zu schließen; eine Leitung (19) zum Fördern eines Kühlluftstroms zum Kondensator (12), wobei die Leitung (19) einen Lüfter (20), einen Motor (10) zu dessen Antrieb, sowie eine erste Lufteinlassöffnung (21) und eine zweite Luftauslassöffnung (22) aufweist, wobei beide Öffnungen (21, 22) mit der Umgebung außerhalb der Maschine in Verbindung stehen,
    dadurch gekennzeichnet, dass der Filter des Trocknungsluftstroms zwei gekrümmte Hohlkörper (33, 34) umfasst, die in einer Kontur der röhrenförmigen Aussparung (3A) der Öffnung (8) einander zugewandt sind, wobei die gekrümmten Hohlkörper (33, 34) sich zwischen einer gitterartigen Wand (35), die einen oberen Teil eines ersten Abschnitts (12A) des Kondensators (12) bedeckt, und einer anderen hierzu gegenüberliegenden gitterartigen Wand (36), die eine Kammer (37) mit einer Umhüllungswand der rohrförmigen Aussparung (3A) bildet, erstrecken; wobei jeder der Hohlkörper (33, 34) aus einer Vorderwand (33A, 34A) und einer entsprechenden aus einem Filtermaterial bestehenden Rückwand (33B, 34B) zusammengesetzt ist, die von der Vorderwand (33A, 34A) beabstandet ist, um jeweilige Fächer (33C, 34C) zu bilden; die Fächer (33C, 34C) mit der Kammer (37) durch jeweilige Öffnungen (33D, 34D) in Verbindung stehen, die mit jeweiligen Durchgängen (36A, 36B) der anderen gitterartigen Wand (36) ausgerichtet sind; jeder der Durchgänge (36A, 36B) dazu ausgelegt ist in Fluidverbindung mit einem entsprechenden Fach (33C, 34C) gebracht zu werden, um die Luft in die Fächer (33C, 34C) strömen zu lassen.
  2. Wäschetrocknungsmaschine wie in Anspruch 1 beansprucht, wobei eine Kontur der röhrenförmigen Aussparung (3A) der Öffnung (8) einen ersten Kanal (38), der hinter den gekrümmten Hohlkörpern (33) angeordnet ist und einen zweiten Kanal (39) hinter dem anderen Hohlkörper (34) aufweist.
  3. Wäschetrocknungsmaschine wie in Anspruch 2 beansprucht, wobei die ersten und zweiten Kanäle (38, 39) sich parallel zu den Rückwänden (33B, 34B) der Hohlkörper erstrecken, an den jeweiligen ersten Enden (38A, 39A) geschlossen und an den anderen Enden geöffnet sind, wo sie durch jeweilige Öffnungen (38B, 39B) in den ersten Bereich (12A) des Kondensators 12, unter der Wand (35) geöffnet werden.
  4. Wäschetrocknungsmaschine wie in Anspruch 3 beansprucht, wobei der Lüfter (9) dazu ausgebildet ist, einen Trocknungsluftstrom aus der Trommel auszuleiten, der Lüfter (9) weiter dazu ausgebildet ist, diesen Strom in die Kammer (37) und in die Fächer (33C, 34C) des Hohlkörpers (33, 34) hinein zu leiten; der Lüfter (9) weiter dazu ausgebildet ist, diesen Strom von den Fächern (33C, 34C), durch die aus Filtermaterial bestehenden Rückwand (33B, 34B) und durch die Kanäle (38, 39) zu treiben, um in den Kondensator (12) zu gelangen.
EP11425106.9A 2011-04-15 2011-04-15 Filtersystem für Wäschetrockner Active EP2511414B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11425106.9A EP2511414B1 (de) 2011-04-15 2011-04-15 Filtersystem für Wäschetrockner

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Application Number Priority Date Filing Date Title
EP11425106.9A EP2511414B1 (de) 2011-04-15 2011-04-15 Filtersystem für Wäschetrockner

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EP2511414A1 EP2511414A1 (de) 2012-10-17
EP2511414B1 true EP2511414B1 (de) 2020-05-06

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2980306B1 (de) * 2014-07-31 2018-01-17 Whirlpool EMEA S.p.A Haushaltstrockengerät mit verbessertem einlassbereich für das trockenmedium in einem kondensator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8437357U1 (de) * 1984-12-20 1985-03-21 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Haushalt-waeschetrockner mit einem flusenfilter
DE602006011627D1 (de) 2006-11-24 2010-02-25 Candy Spa Wäschetrockner mit zusätzlicher Kammer mit Temperaturkontrolle für Feinwäsche
EP1990464B1 (de) 2007-05-09 2010-03-10 CANDY S.p.A. Wäschetrockner mit einem temperaturgesteuerten zusätzlichen Trocknungsschrank und Verfahren zur Trocknung in diesem Trocknungsschrank
DE102008017093B4 (de) * 2008-04-02 2011-03-24 Miele & Cie. Kg Wäschebehandlungsmaschine insbesondere Wäschetrockner
DE102009031097B4 (de) * 2009-06-29 2011-03-24 Miele & Cie. Kg Wäschetrockner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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