EP0816548B1 - Accessoir pour convertir le circuit de séchage d'une machine à laver domestique comprenant un circuit de séchage ouvert en un circuit fermé avec condensation par air de la vapeur d'eau - Google Patents

Accessoir pour convertir le circuit de séchage d'une machine à laver domestique comprenant un circuit de séchage ouvert en un circuit fermé avec condensation par air de la vapeur d'eau Download PDF

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Publication number
EP0816548B1
EP0816548B1 EP97200675A EP97200675A EP0816548B1 EP 0816548 B1 EP0816548 B1 EP 0816548B1 EP 97200675 A EP97200675 A EP 97200675A EP 97200675 A EP97200675 A EP 97200675A EP 0816548 B1 EP0816548 B1 EP 0816548B1
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EP
European Patent Office
Prior art keywords
mouth
washer dryer
air
heat exchanger
accessory equipment
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.)
Expired - Lifetime
Application number
EP97200675A
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German (de)
English (en)
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EP0816548A3 (fr
EP0816548A2 (fr
Inventor
Silvano 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
Original Assignee
Candy SpA
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Filing date
Publication date
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Publication of EP0816548A2 publication Critical patent/EP0816548A2/fr
Publication of EP0816548A3 publication Critical patent/EP0816548A3/fr
Application granted granted Critical
Publication of EP0816548B1 publication Critical patent/EP0816548B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements

Definitions

  • the present invention relates to a accessory equipment for converting the drying circuit of a Washing machine of domestic type with open drying circuit into a closed circuit, with condensation of the water vapour by air.
  • An accessory equipment according to the preamble of claim 1 is disclosed in US4516331.
  • washing machines of domestic type known as washer dryers which not only wash the laundry but also dry it with a flow of heated air drawn in in a closed drying circuit which includes, in order, a washing tub and drum assembly, an air/water heat exchanger, a suction unit, and a heating unit consisting of electrical resistors.
  • the flow of of air produced by the suction unit is heated by the electrical resistors and conveyed into the washing drum, where, as it passes through the wet laundry, evaporates the absorbed water.
  • the moist air is cooled down by a stream of cold water taken from the water main and discharged into the sump. This cooling causes the water vapour to condense and it is then collected in the washing tub and discharged together with the cooling water.
  • the dried air is then drawn in by the suction unit and recycled.
  • dryers having the sole function of drying the laundry, which use the same concept of drying by means of a flow of hot air in a closed cycle: such machine have an air/air heat exchanger which, in order to cool the moist air and condense the water vapour, use air from the environment, which a suction unit circulates through the heat exchanger, in place of mains water.
  • the present invention solves the disadvantages of both categories of washer dryer and dryer mentioned above by providing an accessory equipment for a versatile washer dryer that is economical and simple to manufacture, and equipped in its basic version with only an open-type drying circuit that can be converted, if circumstances so require, to a closed circuit, by using the accessory equipment, the cost of which does not necessarily impact on the basic washer dryer model but only if the accessory equipment is indispensable.
  • the accessory equipment can easily be installed as an option on the basic model, either in the final stage of production as a special version of the product or as an option brought in later by the user.
  • the accessory equipment which is the subject of the present invention, may comprise in its simplest form a filter for trapping fluff and lint and an air/air heat exchanger water vapour condenser.
  • the accessory equipment may also comprise an auxiliary fan unit for drawing a secondary flow of cooling and condensing air through the heat exchanger.
  • a washer dryer comprises a structure 1 of standardized dimensions, for example, width 60 cm, depth 50 cm, height 80 cm, in which is housed, on sprung mountings, a washing tub 2 containing a rotating drum 3, drive members (not shown), a discharge filter/pump /unit 4 whose inlet is connected to the bottom of the tub 2 by a flexible tube 5, while its outlet is connected to a discharge pipe 6.
  • the drum 3 is generally loaded with washing through a front door 7.
  • the structure of the machine includes a fan unit 8 which, unlike ordinary washer dryers, sucks in air from the environment through a suction mouth 9 that opens on the rear wall of the machine and is connected to the fan unit 3 by a flexible hose 10.
  • the fan unit 8 conveys the in-drawn air into a heating chamber 11, in itself conventional, where the in-drawn air is heated by means of electrical resistors 12.
  • the hot air is conveyed through a pipe 13 and the loading mouth of the washing drum 3, into the drum itself.
  • the hot air passes through the washing drum before leaving the washing tub through an outflow mouth 14 connected to the washing tub by a flexible tube 15 and open to the external environment through the rear wall of the machine.
  • the outflow mouth 14 is of course open at a higher level than the maximum level to which the tub 2 can be filled with washing water, this level being indicated by the numeral 16.
  • the delivery pipe 13 and the outflow mouth are conveniently arranged in diametrically opposite positions with respect to the washing tub, for a more efficient sweeping of the washing drum and of the laundry contained inside it and hence for a more efficient drying action.
  • the fan unit 8 and the heating chamber 11 are mounted directly on the tub 2.
  • they can also be attached to any suitable frame integral with the machine structure 1, in which case the flexible hose 10 can be replaced by a rigid pipe.
  • the machine shown in Figs 1 and 2 is advantageously fitted with a pipe 117 for collecting the condensed water: it opens through the rear wall of the machine at a higher level than the maximum filling level and is connected to the discharge filter/pump unit 4.
  • the machine's programme selector is of course also designed to execute a drying cycle in the course of which the drum 3 is rotated at a predetermined speed, and the fan 8 and heating elements 12 are on.
  • the machine is made able to operate also as a dryer.
  • the hot moist air emitted through the mouth 14 disperses freely into the atmosphere.
  • This valve which during washing operations is not subject to any pressure difference, may consist of a butterfly valve whose normal position is closed and which is opened by the pressure difference produced when the fan 8 is turned on.
  • valve may be controlled by a thermomechanical actuator of known type which is often used in this field or by any other functionally equivalent means.
  • a machine of the type described can, either towards the end of the manufacturing process or in the user's home, be fitted with different levels of optional equipment to increase its performance and range of possible uses.
  • FIGS 3 and 4 show, in a partially sectioned rear view and in a front-to-rear transverse section, respectively, a portion of the washer dryer.
  • a housing is formed for a diffusion chamber 19 connected at the bottom to and communicating with the outflow mouth 14 via a tube 20, or alternatively directly.
  • the diffusion chamber 19 is closed at the top by a removable grille 21 that functions as a frame for a gauze filter 22.
  • the grille 21 has relief ribs 23 in the upper plane of the machine to ensure that there are always communication slits between the inside and outside of the chamber, even if objects are placed on the grille which could obstruct the apertures of the grille.
  • the machine can easily be converted into a washer dryer with a closed drying circuit by attaching to the back of the machine an accessory unit comprising a fan, an air/air heat exchanger and a fluff filter.
  • the accessory consists of a flat casing 24 having depth D of the order of 7 - 15 cm, width W approximately equal to the width of the washer dryer (60 cm is a standardized dimension) and extending in height above the maximum level to which the machine can be filled with liquid, up to approximately the top surface of the machine.
  • a cassette filter 26 Removably housed in the casing, which is closed at the top by a removable cover 25, and with suitable internal ribs and membranes to hold them in position, are a cassette filter 26, a heat exchanger 27 and a fan unit 28.
  • the bottom of the casing 24 forms a condensation collecting chamber 29.
  • the wall of the casing 24 placed against the rear wall of the washer dryer 30 includes an aperture 31 connected (by a pipe fitting, elastic flange and the like) to the outflow mouth carrying the hot moist air from the machine.
  • the hot air enters a chamber formed between the filter 26 and the wall of the casing unit placed against the rear wall of the machine, passes through the filter 26 and is conveyed, its path defined by a membrane 32, to the condensation collecting chamber 29.
  • the manifold 33 contains an outflow aperture 34 opposite the suction mouth of the machine's drying circuit.
  • the wall of the casing 24 placed against the rear wall of the machine has of course a corresponding aperture.
  • the broken line with arrows 35 represents the path of the air through the casing, from the inlet mouth 31 to the outlet mouth 34.
  • the hot moist air is cooled down to produce condensation which drips into the collecting chamber 29, from where it is extracted by a discharge mouth 36 connected to the condensation collecting pipe 117 (Fig. 1) of the washer dryer and conveyed into the washing tub (where it can advantageously be kept for a later washing operation, thereby helping to reduce the amount of water consumed for the washing operation and reducing its hardness) or be directly expelled by the action of the discharge pump 4 (Fig. 1).
  • the fan unit 28 has an inlet mouth connected to a suction pipe 37, the top of which is open and communicates with the environment through a grille 38 in the removable cover 25.
  • the solid line with arrows 40 represents the path of the cooling air through the casing 24.
  • the filter 26, having an upper cap 41 with handle 42, can be lifted up out of its housing to allow periodic easy cleaning.
  • heat exchanger 27 integral with the manifold 33 and having a handle 43, can be lifted up out of its housing for periodical inspection and cleaning, if necessary.
  • the casing can easily be fitted securely to the rear wall of the washer dryer as an optional accessory using screws, hanging hooks or equivalent means.
  • the fan unit 28 can be connected up electrically by a plug connector into a power socket on the rear wall of the machine, or even by a terminal board accessible from the back of the machine.
  • the fan 28 can be turned on at the same time as the fan 8.
  • the pump may be used at the end or for short intervals in the course of the drying cycle even if the accessory unit is not present.
  • the fan unit 8 of the washer dryer shown in Figs 1 and 2 in this case preferably mounted on the structure/frame of the machine and not on the washing tub, can be provided with a second rotor having a suction mouth and delivery mouth that open through the rear wall of the machine.
  • the accessory unit formed by the casing 24 shown in Fig. 5 will not require its own fan and can be fitted with a suction pipe (such as 37) which is connected to the suction mouth of the second rotor as well as with a delivery pipe which connects with the delivery mouth of the second rotor to convey the cooling air through the heat exchanger.
  • a suction pipe such as 37
  • the accessory unit comprises only static components (filter and heat exchanger) and does not need to be connected electrically to the washer dryer.
  • a removable cap may be fitted over the suction mouth of the second rotor, or even, conveniently, a connecting tube running between the outlet mouth of the second rotor and the suction mouth of the first rotor so as to use the two rotors in series and thus achieve a higher throughput of air.
  • accessory equipment is preferably installed on the rear wall of the washer dryer (primarily so that it can be slotted into a space in a modular kitchen and so that the top panel of the machine can be used as a work surface), it is also possible to manufacture accessory equipment, for converting the machine drying circuit from open to closed, that fits over the top of the volume of the machine and is firmly attached to the top panel.

Landscapes

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

Claims (15)

  1. Accessoire pour machine à laver le linge séchante comprenant un circuit de séchage ouvert, une bouche d'aspiration (9) et une bouche d'écoulement (14) toutes deux ouvertes vers l'environnement externe de la sécheuse ou de la machine à laver séchante pour blanchisserie, dans lequel l'accessoire comprend :
    un échangeur thermique air/air (27) ;
    un premier canal pour un premier écoulement d'air en provenance d'une bouche d'admission (31) à travers ledit échangeur thermique (27) jusqu'à une bouche d'évacuation (34) ;
    un second canal pour un second écoulement d'air de refroidissement à travers ledit échangeur thermique (27) ; et lesdites bouche d'admission (31) et bouche d'évacuation (34) dudit premier canal sont raccordables respectivement à la bouche d'écoulement (14) et à la bouche d'aspiration (9) de la sécheuse ou de la machine à laver le linge séchante en vue de convertir celle-ci, si nécessaire, en un circuit de séchage du type fermé, caractérisé en ce que l'accessoire comprend en outre :
    un filtre (26) ;
    un logement (24) formant ledit premier canal pour ledit premier écoulement d'air en provenance de ladite bouche d'admission (31) à travers ledit filtre (26) et ledit échangeur thermique (27) jusqu'à ladite bouche d'évacuation (34) ;
    une chambre collectrice de condensation (29) formée dans ledit logement (24) ;
       et en ce que tant l'échangeur thermique (27) que le filtre (26) sont disposés de manière amovible à l'intérieur dudit logement (24) et en ce que ledit logement peut être fixé de manière amovible à ladite sécheuse ou machine à laver le linge séchante.
  2. Accessoire selon la revendication 1, dans lequel le filtre (26) comporte un couvercle supérieur (41) muni d'une poignée (42) permettant que le filtre soit retiré par le haut de son logement pour permettre un nettoyage périodique.
  3. Accessoire selon la revendication 1 ou 2, dans lequel l'échangeur thermique (27) comporte une poignée (43) permettant que l'échangeur thermique (27) soit retiré par le haut de son logement à des fins d'inspection et de nettoyage périodiques.
  4. Accessoire selon l'une quelconque des revendications précédentes, comprenant un ventilateur (28) logé dans ledit logement (24), en association avec ledit échangeur thermique (27), en vue d'activer ledit second écoulement d'air.
  5. Accessoire selon la revendication 4, dans lequel le logement (24) est fermé à son sommet par un couvercle amovible (25) et est muni de nervures et de membranes internes en vue de maintenir le filtre à cassette (26), l'échangeur thermique (27) et le ventilateur (28) en position de manière amovible.
  6. Accessoire selon la revendication 5, dans lequel le ventilateur (28) comporte une bouche d'admission raccordée à un tuyau d'aspiration (37) dont le sommet est ouvert et communique avec l'environnement à travers une grille (38) formée dans ledit couvercle amovible (25).
  7. Accessoire selon la revendication 6, dans lequel l'air de refroidissement du second écoulement d'air est aspiré vers l'intérieur à travers ladite grille (38) et, après avoir passé devant l'échangeur thermique (27), est expulsé dans l'environnement à travers une seconde grille (39) dans ledit couvercle (25)
  8. Accessoire selon l'une quelconque des revendications précédentes, dans lequel le fond du logement (24) forme ladite chambre collectrice de condensation (29).
  9. Machine à laver le linge séchante du type domestique dans lequel l'air chauffé par des éléments chauffants est aspiré à travers un tambour de lavage/séchage (3) logé dans une cuve de lavage (2) par un bloc aspiration (8) comprenant un premier rotor, en vue d'évaporer le liquide absorbé par le linge présent dans ledit tambour de séchage (3), la machine à laver le linge séchante étant caractérisée en ce qu'elle comprend :
    une bouche d'aspiration (9) ouverte vers l'environnement externe de ladite machine à laver séchante et raccordé à l'entrée d'admission dudit bloc aspiration (8) et
    une bouche d'évacuation (14) raccordée à ladite cuve de lavage (2) et ouverte vers l'environnement externe à un niveau supérieur qu'à un niveau maximal prédéterminé auquel ladite cuve (2) peut être remplie de liquide de lavage, caractérisée en ce que la machine à laver le linge séchante comprend un accessoire selon l'une quelconque des revendications précédentes.
  10. Machine à laver le linge séchante selon la revendication 9, dans laquelle lesdites bouches d'aspiration (9) et d'évacuation (14) sont ouvertes à travers une paroi arrière de ladite machine à laver le linge séchante.
  11. Machines à laver le linge séchante selon la revendication 9 ou 10, comprenant des moyens (17,18) destinés à bloquer l'écoulement d'air à travers au moins l'une desdites bouches d'aspiration et d'évacuation, celles-ci étant normalement fermées mais ouvertes pendant une condition de séchage de ladite machine à laver le linge séchante.
  12. Machine à laver le linge séchante selon la revendication 11 dans laquelle ledit moyen de blocage est constitué d'au moins un robinet à papillon normalement fermé qui est ouvert par une différence de pression en aval et en amont dudit robinet produite par ledit bloc d'aspiration.
  13. Machine à laver le linge séchante selon l'une des revendications 9 à 12 dans laquelle ledit bloc d'aspiration (IC) comprend un second rotor comportant une bouche d'aspiration et une bouche de refoulement qui sont toutes deux ouvertes vers l'extérieur de ladite machine à laver le linge séchante.
  14. Machine à laver le linge séchante selon la revendication 13, dans laquelle ledit logement (24) est fixé de manière amovible à ladite machine à laver le linge séchante formant ledit premier canal de recyclage de ladite bouche d'évacuation (14) vers ladite bouche d'aspiration (9) et ledit second canal pour l'air de refroidissement aspiré vers l'intérieur en provenance de l'environnement au moyen dudit second rotor est transporté à travers ledit échangeur thermique.
  15. Machine à laver le linge séchante selon l'une quelconque des revendications 9 à 14, dans laquelle ledit logement (24) est fixé à la paroi arrière de ladite machine à laver le linge séchante.
EP97200675A 1996-06-26 1997-03-06 Accessoir pour convertir le circuit de séchage d'une machine à laver domestique comprenant un circuit de séchage ouvert en un circuit fermé avec condensation par air de la vapeur d'eau Expired - Lifetime EP0816548B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT96MI001294A IT1284442B1 (it) 1996-06-26 1996-06-26 Macchina lavatrice di tipo domestico con circuito di asciugatura aperto e relativa apparecchiatura accessoria di conversione del
ITMI961294 1996-06-26

Publications (3)

Publication Number Publication Date
EP0816548A2 EP0816548A2 (fr) 1998-01-07
EP0816548A3 EP0816548A3 (fr) 2003-01-02
EP0816548B1 true EP0816548B1 (fr) 2004-08-18

Family

ID=11374482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97200675A Expired - Lifetime EP0816548B1 (fr) 1996-06-26 1997-03-06 Accessoir pour convertir le circuit de séchage d'une machine à laver domestique comprenant un circuit de séchage ouvert en un circuit fermé avec condensation par air de la vapeur d'eau

Country Status (3)

Country Link
EP (1) EP0816548B1 (fr)
DE (1) DE69730274T2 (fr)
IT (1) IT1284442B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101158101B (zh) * 2006-10-02 2011-04-06 Lg电子株式会社 除异味装置及具有该除异味装置的洗衣机
EP3683352A4 (fr) * 2017-09-13 2021-05-26 Qingdao Haier Drum Washing Machine Co., Ltd. Appareil de traitement du linge

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI294473B (en) * 2002-10-16 2008-03-11 Matsushita Electric Industrial Co Ltd Washing and drying machine
EP1650338A3 (fr) * 2004-10-22 2006-07-05 LG Electronics, Inc. Machine à laver séchante.
EP1655405B1 (fr) * 2004-11-08 2008-05-21 LG Electronics Inc. Machine à laver à tambour
US9109317B2 (en) 2009-08-21 2015-08-18 Whirlpool Corporation Controlled moisture removal in a laundry treating appliance
EP2386679B1 (fr) * 2010-05-13 2020-07-01 Samsung Electronics Co., Ltd. Sèche-linge
EP2573253B1 (fr) * 2011-09-26 2016-09-07 Electrolux Home Products Corporation N.V. Sèche-linge à pompe à chaleur
WO2017114631A1 (fr) * 2015-12-29 2017-07-06 Arcelik Anonim Sirketi Sèche-linge comprenant un moyen de chauffage et son procédé de commande
DE102017123318A1 (de) 2017-10-09 2019-04-11 Miele & Cie. Kg Wärmepumpengerät, vorzugsweise Wärmepumpenwäschetrockner oder Wärmepumpenwaschtrockner

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1461073A (en) * 1973-06-01 1977-01-13 Colston Appliances Ltd Washing machine having a hot air dryer
US3937043A (en) * 1974-02-25 1976-02-10 White-Westinghouse Corporation Vapor saving ambient air intake system for a dry cleaner
IT1024157B (it) * 1974-12-18 1978-06-20 Smeg Elettrodonestici S P A Macchina lavabiaucheria con dispositivo asciugatore
DE3017089A1 (de) * 1980-05-03 1981-11-05 Miele & Cie GmbH & Co, 4830 Gütersloh Zum waschen, schleudern und trocknen eingerichtete waeschebehandlungsmaschine
JPS5846997A (ja) * 1981-09-16 1983-03-18 株式会社東芝 乾燥機
WO1990008851A1 (fr) * 1989-02-03 1990-08-09 Zanker Gmbh & Co. Ohg Seche-linge
GB2258720A (en) * 1991-08-15 1993-02-17 Creda Ltd Tumble dryer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101158101B (zh) * 2006-10-02 2011-04-06 Lg电子株式会社 除异味装置及具有该除异味装置的洗衣机
EP3683352A4 (fr) * 2017-09-13 2021-05-26 Qingdao Haier Drum Washing Machine Co., Ltd. Appareil de traitement du linge

Also Published As

Publication number Publication date
EP0816548A3 (fr) 2003-01-02
EP0816548A2 (fr) 1998-01-07
ITMI961294A1 (it) 1997-12-26
ITMI961294A0 (fr) 1996-06-26
DE69730274D1 (de) 2004-09-23
IT1284442B1 (it) 1998-05-21
DE69730274T2 (de) 2005-09-08

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