EP1905883B1 - Laundry drier with a door-mounted condensation tank - Google Patents

Laundry drier with a door-mounted condensation tank Download PDF

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Publication number
EP1905883B1
EP1905883B1 EP06121576A EP06121576A EP1905883B1 EP 1905883 B1 EP1905883 B1 EP 1905883B1 EP 06121576 A EP06121576 A EP 06121576A EP 06121576 A EP06121576 A EP 06121576A EP 1905883 B1 EP1905883 B1 EP 1905883B1
Authority
EP
European Patent Office
Prior art keywords
drum
laundry
door
condensation tank
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06121576A
Other languages
German (de)
French (fr)
Other versions
EP1905883A1 (en
Inventor
Luigi Arreghini
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to AT06121576T priority Critical patent/ATE519884T1/en
Priority to PL06121576T priority patent/PL1905883T3/en
Priority to ES06121576T priority patent/ES2370508T3/en
Priority to EP06121576A priority patent/EP1905883B1/en
Priority to PCT/EP2007/008227 priority patent/WO2008037399A1/en
Publication of EP1905883A1 publication Critical patent/EP1905883A1/en
Application granted granted Critical
Publication of EP1905883B1 publication Critical patent/EP1905883B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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 drier, preferably for home use.
  • a standard home laundry drier condenses a stream of hot air blown into a drying drum and which removes moisture from the laundry; and the front access to the drum is closed by a hinged panel-type front door.
  • a known laundry drier comprises a ventilation system (i. e. usually a blower comprising a fan and an electric fan motor) and a heating arrangement, which draw air from the outside and, via an appropriate conduit arrangement, heat and blow the air into and through the laundry drying drum.
  • the hot drying air is then either exhausted directly from the drier or fed to condensing means to condense the moisture collected in the hot air.
  • the condensation is collected in a removable tank; and, when the condensation tank is full, the drier is stopped and the tank must be removed and emptied by the user.
  • EP0789105A1 discloses a laundry drier with a panel-type front door, and a removable condensation tank housed removably in a cassette housing formed in the front door together with a fluff and down filter removable separately from the tank; and an open nozzle on the laundry-loading opening feeds the condensation tank through a filler on the tank, which faces the nozzle and simultaneously acts as a vent.
  • a perforated cover is interposed between the removable tank and the drum, and forms a diaphragm separating the inside of the drum from the removable tank, to prevent contact between the laundry being dried and the removable tank when the drier is running.
  • EP0555703A1 discloses a condensation laundry drier, in which the condensation container is located in the door or loading opening area, and is only accessible when the door is open. And a perforated cover is interposed between the condensation container and the drum, and forms a diaphragm separating the inside of the drum from the condensation container to prevent contact between the laundry being dried and the condensation container when the drier is running.
  • Number 1 in the attached drawing indicates as a whole a laundry drier comprising a casing 2 resting on a floor 3 on a number of feet 4.
  • Casing 2 supports a revolving laundry drum 5 which rotates about a horizontal rotation axis 6 (in alternative embodiments not shown, rotation axis 6 may be tilted or vertical), and front access to which is closed by a door 7 hinged to a front wall of casing 2.
  • Drum 5 is rotated by an electric motor 8, and is fed through with a stream of drying air fed into drum 5 by a centrifugal fan 9 and heated by heating elements 10.
  • the moisture in the laundry in drum 5 is released by evaporation to the stream of hot drying air; and the moist hot air from drum 5 is piped to a condenser 11, which is cooled by a stream of relatively cold air drawn in from the outside by a centrifugal aspirator 12.
  • condenser 11 the vapour in the stream of hot air is condensed to liquid by cooling, and collects in a condenser reservoir 13; the dry air from condenser 11 is drawn by fan 9 and fed back into drum 5, subject to reheating by heating elements 10; and the outside air used for condensation is exhausted.
  • the condensation collected in condenser reservoir 13 is pumped by a pump 14 into a condensation tank 15 located at a higher level than condenser reservoir 13; and, when condensation tank 15 is full, a known level sensor (not shown) is activated to stop drier 1. Operation of the drier is controlled by a programmer 16 operated by buttons or knobs 17 on a front control panel 18.
  • Condensation tank 15 is fitted to door 7 closing the loading opening of drum 5, and contacts an inner wall 19 of door 7. More specifically, door 7 may comprise a housing removably housing condensation tank 15. An outer wall 20 of condensation tank 15 contacts inner wall 19 of door 7, and, when door 7 is in the closed position, an inner wall 21 of condensation tank 15 acts as a door cap to retain the laundry inside drum 5. In other words, when door 7 is in the closed position, inner wall 21 of condensation tank 15 closes the front access opening to drum 5 to retain the laundry inside drum 5, so that tank 15 acts as both a water container and the so-called door cap for retaining the laundry inside drum 5.
  • inner wall 21 of condensation tank 15 is in direct contact with the hot water inside condensation tank 15, and an outer surface of inner wall 21 is in direct contact with the laundry inside drum 5, so that part of the heat of the hot water inside condensation tank 15 is transferred to the laundry inside drum 5 to further heat and improve drying of the laundry.
  • inner wall 21 of condensation tank 15 has a high heat-transmission coefficient to improve heat exchange between the hot water in condensation tank 15 and the laundry in drum 5.
  • Condensation tank 15 does not entirely close the front access opening to drum 5, so as to define an outflow opening 22 of an exhaust conduit 23, by which the moist drying air is fed from the inside of drum 5 to condenser 11.
  • a removable filter may be provided to catch laundry-shed fluff and down.
  • Laundry drier 1 as described above has numerous advantages, by being cheap and easy to implement, and by providing for improved drying performance.

Landscapes

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

Abstract

A laundry drier (1) having: a revolving laundry drum (5) having a front access opening; a door (7) hinged to a front wall of a casing (2) of the laundry drier (1); a fan (9) for feeding drying air into the drum (5); a condenser (11) for dehumidifying the moist drying air from the drum (5); and a condensation tank (15) fitted to the door (7) and for collecting the condensation produced by the condenser (11); when the door (7) is in the closed position, an inner wall (21) of the condensation tank (15) acts as a door cap to retain the laundry inside the drum (5).

Description

    TECHNICAL FIELD
  • The present invention relates to a laundry drier, preferably for home use.
    • BACKGROUND ART
  • A standard home laundry drier condenses a stream of hot air blown into a drying drum and which removes moisture from the laundry; and the front access to the drum is closed by a hinged panel-type front door. More specifically, a known laundry drier comprises a ventilation system (i. e. usually a blower comprising a fan and an electric fan motor) and a heating arrangement, which draw air from the outside and, via an appropriate conduit arrangement, heat and blow the air into and through the laundry drying drum. The hot drying air is then either exhausted directly from the drier or fed to condensing means to condense the moisture collected in the hot air. The condensation is collected in a removable tank; and, when the condensation tank is full, the drier is stopped and the tank must be removed and emptied by the user.
  • For reasons of space, to make the best use of the limited volume available, and to permit easy access to the tank, the trend is towards laundry driers with a removable, door-mounted condensation tank housed removably in the space formed by the loading opening.
  • EP0789105A1 discloses a laundry drier with a panel-type front door, and a removable condensation tank housed removably in a cassette housing formed in the front door together with a fluff and down filter removable separately from the tank; and an open nozzle on the laundry-loading opening feeds the condensation tank through a filler on the tank, which faces the nozzle and simultaneously acts as a vent. A perforated cover is interposed between the removable tank and the drum, and forms a diaphragm separating the inside of the drum from the removable tank, to prevent contact between the laundry being dried and the removable tank when the drier is running.
  • EP0555703A1 discloses a condensation laundry drier, in which the condensation container is located in the door or loading opening area, and is only accessible when the door is open. And a perforated cover is interposed between the condensation container and the drum, and forms a diaphragm separating the inside of the drum from the condensation container to prevent contact between the laundry being dried and the condensation container when the drier is running.
    • DISCLOSURE OF INVENTION
  • It is an object of the present invention to provide a laundry drier that is cheap and easy to produce, and which also provides for improved drying performance.
  • According to the present invention, there is provided a laundry drier as claimed in the accompanying Claims.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • A non-limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawing, which shows a schematic side view of a laundry drier in accordance with the present invention.
    • PREFERRED EMBODIMENTS OF THE INVENTION
  • Number 1 in the attached drawing indicates as a whole a laundry drier comprising a casing 2 resting on a floor 3 on a number of feet 4. Casing 2 supports a revolving laundry drum 5 which rotates about a horizontal rotation axis 6 (in alternative embodiments not shown, rotation axis 6 may be tilted or vertical), and front access to which is closed by a door 7 hinged to a front wall of casing 2. Drum 5 is rotated by an electric motor 8, and is fed through with a stream of drying air fed into drum 5 by a centrifugal fan 9 and heated by heating elements 10.
  • The moisture in the laundry in drum 5 is released by evaporation to the stream of hot drying air; and the moist hot air from drum 5 is piped to a condenser 11, which is cooled by a stream of relatively cold air drawn in from the outside by a centrifugal aspirator 12.
  • In condenser 11, the vapour in the stream of hot air is condensed to liquid by cooling, and collects in a condenser reservoir 13; the dry air from condenser 11 is drawn by fan 9 and fed back into drum 5, subject to reheating by heating elements 10; and the outside air used for condensation is exhausted.
  • The condensation collected in condenser reservoir 13 is pumped by a pump 14 into a condensation tank 15 located at a higher level than condenser reservoir 13; and, when condensation tank 15 is full, a known level sensor (not shown) is activated to stop drier 1. Operation of the drier is controlled by a programmer 16 operated by buttons or knobs 17 on a front control panel 18.
  • Condensation tank 15 is fitted to door 7 closing the loading opening of drum 5, and contacts an inner wall 19 of door 7. More specifically, door 7 may comprise a housing removably housing condensation tank 15. An outer wall 20 of condensation tank 15 contacts inner wall 19 of door 7, and, when door 7 is in the closed position, an inner wall 21 of condensation tank 15 acts as a door cap to retain the laundry inside drum 5. In other words, when door 7 is in the closed position, inner wall 21 of condensation tank 15 closes the front access opening to drum 5 to retain the laundry inside drum 5, so that tank 15 acts as both a water container and the so-called door cap for retaining the laundry inside drum 5.
  • It is important to point out that an inner surface of inner wall 21 of condensation tank 15 is in direct contact with the hot water inside condensation tank 15, and an outer surface of inner wall 21 is in direct contact with the laundry inside drum 5, so that part of the heat of the hot water inside condensation tank 15 is transferred to the laundry inside drum 5 to further heat and improve drying of the laundry. In other words, having one wall (inner wall 21 of condensation tank 15) separating the hot water in condensation tank 15 from the laundry in drum 5, part of the heat of the hot water in condensation tank 15 is recovered by being transferred to the laundry in drum 5. In one embodiment, inner wall 21 of condensation tank 15 has a high heat-transmission coefficient to improve heat exchange between the hot water in condensation tank 15 and the laundry in drum 5.
  • Condensation tank 15 does not entirely close the front access opening to drum 5, so as to define an outflow opening 22 of an exhaust conduit 23, by which the moist drying air is fed from the inside of drum 5 to condenser 11. Along exhaust conduit 23 and close to outflow opening 22 (and therefore close to condensation tank 15), a removable filter may be provided to catch laundry-shed fluff and down.
  • Laundry drier 1 as described above has numerous advantages, by being cheap and easy to implement, and by providing for improved drying performance.
  • More specifically, having one wall (inner wall 21 of condensation tank 15) separating the hot water in condensation tank 15 from the laundry in drum 5, part of the heat of the hot water in condensation tank 15 is recovered by being transferred to the laundry in drum 5.

Claims (3)

  1. A laundry drier (1) comprising:
    a revolving laundry drum (5) having a front access opening;
    a door (7) hinged to a front wall of a casing (2) of the laundry drier (1);
    a fan (9) for feeding drying air into the drum (5);
    a condenser (11) for dehumidifying the moist drying air from the drum (5); and
    a condensation tank (15) fitted to the door (7) and for collecting the condensation produced by the condenser (11);
    wherein, when the door (7) is in the closed position, an inner wall (21) of the condensation tank (15) acts as a door cap to retain the laundry inside the drum (5);
    wherein an inner surface of the inner wall (21) of the condensation tank (15) is arranged to come in direct contact with the hot water in the condensation tank (15);
    wherein an outer surface of the inner wall (21) is arranged to come in direct contact with the laundry in the drum (5),
    characterized in that the inner wall (21) of the condensation tank (15) has a high heat-transmission coefficient, so as to improve heat exchange between the hot water contained in said condensation tank (15) and the laundry contained in said drum (5).
  2. A laundry drier (1) as claimed in Claim 1, wherein an outer wall (20) of the condensation tank (15) contacts an inner wall (19) of the door (7).
  3. A laundry drier (1) as claimed in Claim 1 or 2, wherein the condensation tank (15) does not entirely close the front access opening to drum (5), so as to define an outflow opening (22) of an exhaust conduit (23), by which the moist drying air is fed from the inside of the drum (5) to the condenser (11).
EP06121576A 2006-09-29 2006-09-29 Laundry drier with a door-mounted condensation tank Not-in-force EP1905883B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT06121576T ATE519884T1 (en) 2006-09-29 2006-09-29 CLOTHING DRYER WITH A CONDENSATE COLLECTION TANK MOUNTED IN THE DOOR
PL06121576T PL1905883T3 (en) 2006-09-29 2006-09-29 Laundry drier with a door-mounted condensation tank
ES06121576T ES2370508T3 (en) 2006-09-29 2006-09-29 CLOTHING DRIER WITH CONDENSATION TANK MOUNTED ON THE DOOR.
EP06121576A EP1905883B1 (en) 2006-09-29 2006-09-29 Laundry drier with a door-mounted condensation tank
PCT/EP2007/008227 WO2008037399A1 (en) 2006-09-29 2007-09-21 Laundry drier with a door-mounted condensation tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06121576A EP1905883B1 (en) 2006-09-29 2006-09-29 Laundry drier with a door-mounted condensation tank

Publications (2)

Publication Number Publication Date
EP1905883A1 EP1905883A1 (en) 2008-04-02
EP1905883B1 true EP1905883B1 (en) 2011-08-10

Family

ID=37695899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06121576A Not-in-force EP1905883B1 (en) 2006-09-29 2006-09-29 Laundry drier with a door-mounted condensation tank

Country Status (5)

Country Link
EP (1) EP1905883B1 (en)
AT (1) ATE519884T1 (en)
ES (1) ES2370508T3 (en)
PL (1) PL1905883T3 (en)
WO (1) WO2008037399A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2128328A1 (en) * 2008-05-29 2009-12-02 Electrolux Home Products Corporation N.V. Laundry drier
CN105603702A (en) * 2014-11-25 2016-05-25 青岛海尔洗衣机有限公司 Clothes dryer water collecting box and clothes dryer
CN108823923A (en) * 2018-07-10 2018-11-16 长虹美菱股份有限公司 A kind of dryer having door body cavity storage condensed water function
CN110761051A (en) * 2019-11-04 2020-02-07 安徽欧斯福科技有限公司 Visible water storage system for front door panel of drying machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT211139Z2 (en) * 1986-07-25 1989-02-13 Zanussi Elettrodomestici REFINEMENTS FOR CONDENSATION DRYING MACHINES.
DE4204360A1 (en) * 1992-02-14 1993-08-19 Bauknecht Hausgeraete LAUNDRY DRYER
IT237177Y1 (en) * 1995-09-28 2000-08-31 Candy Spa CONDENSATION AND FRONT LOADING DRYER CONDENSATE RECOVERY CONDITIONER IN REMOVABLE CONTAINER
IT240433Y1 (en) * 1996-02-06 2001-04-02 Candy Spa DRYER WITH FRONT PANEL DOOR AND REMOVABLE CONDENSATE WATER RECOVERY TANK

Also Published As

Publication number Publication date
WO2008037399A1 (en) 2008-04-03
PL1905883T3 (en) 2012-01-31
EP1905883A1 (en) 2008-04-02
ATE519884T1 (en) 2011-08-15
ES2370508T3 (en) 2011-12-19

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