EP1630279B1 - Sèche-linge domestique à haute efficacité - Google Patents

Sèche-linge domestique à haute efficacité Download PDF

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Publication number
EP1630279B1
EP1630279B1 EP04104117A EP04104117A EP1630279B1 EP 1630279 B1 EP1630279 B1 EP 1630279B1 EP 04104117 A EP04104117 A EP 04104117A EP 04104117 A EP04104117 A EP 04104117A EP 1630279 B1 EP1630279 B1 EP 1630279B1
Authority
EP
European Patent Office
Prior art keywords
drying
heating resistance
drum
control means
resistance
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
EP04104117A
Other languages
German (de)
English (en)
Other versions
EP1630279A1 (fr
Inventor
Ugo Favret
Flavio Noviello
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 EP04104117A priority Critical patent/EP1630279B1/fr
Priority to ES04104117T priority patent/ES2282800T3/es
Priority to DE602004005036T priority patent/DE602004005036T2/de
Priority to SI200430304T priority patent/SI1630279T1/sl
Priority to AT04104117T priority patent/ATE355408T1/de
Publication of EP1630279A1 publication Critical patent/EP1630279A1/fr
Application granted granted Critical
Publication of EP1630279B1 publication Critical patent/EP1630279B1/fr
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 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/38—Time, e.g. duration
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/28—Electric heating
    • 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
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/46—Control of the operating time

Definitions

  • the instant invention describes an improved kind of clothes drying machine, preferably of the type for use in households, which is provided with means for removing the moisture from the drying air.
  • Said drying machine can be both of a conventional type, sucking the drying air from outside the drum, heating and blowing that air into the drum and finally conveying it to the outside again; or said machine can be a condenser drying machine, comprising a condenser through which there is conveyed, further to the flow of the drying air itself, a second flow of cooling air, occurring of course separately from said flow of drying air, which is taken in from the outside ambient and appropriately delivered to flow through and, as a result, cool down said condenser.
  • the present invention may be equally applied to conventional drying machines (not having a condenser and associated fans and air ducts), or to condenser-type clothes drying machines of a traditional kind, i.e. provided with a regular condenser, but lacking the other features as indicated above, although the aims and advantages pursued and reachable with the present invention would of course not be fully achieved in this case.
  • the hot air Upon having been blown into the clothes-holding drum, the hot air causes the moisture contained in the clothes to evaporate, thereby becoming almost saturated, or even fully saturated, therewith.
  • This hot, moisture-laden air is then pushed further by said fan, thereby creating a continuous flow that is eventually sent into an appropriate condensation arrangement, which is usually constituted by a heat-exchanger flown through - along the so-called “hot” path - by said flow of hot moisture-laden air and - along the so-called “cold” path - by a substantially continuous flow of fresh air that is taken in from the outside ambient and is exhausted again into the outside ambient upon having so flown through said heat-exchanger.
  • Said auxiliary resistor is to achieve various purposes; for instance it is to hold the heat generation rate constant, irrespective of the outside air temperature, or to simplify the electronic devices dedicated to control the drying air temperature.
  • a drum 1 adapted to hold the clothes to be dried, to which there is associated a conduit 2 for the circulation of the drying air; the latter flows also through a condenser 3, which is adapted to cause the moisture contained in the drying air flowing therethrough to condense, said condenser being furthermore flown through by a flow of "cold" air, i.e. air taken in from the outside and sent to said condenser 3 via a corresponding conduit 4.
  • Both conduits 2 and 4 contain two respective fans 5, 6 therewithin, which are provided to circulate the drying-air flow and the cooling-air flow, respectively. Furthermore, the shafts of said two fans 5 and 6 are connected in any of the manners known as such in the art, even via appropriate mechanisms and gears, to a single motor 7 so that the rotation of this motor causes said two fans to correspondingly rotate in a synchronous manner.
  • This motor 7 is controlled by appropriate control means (not shown), which are adapted to let it revolve in its two possible directions of rotation; as a result, this allows said two fans to be caused to selectively rotate in either direction, but in all cases in a mutually consistent manner (i.e., when a first fan rotates in a definite direction, the second fan will always rotate in a single and sole direction; and when the first fan changes its direction of rotation, the second fan will change its own direction of rotation, too.
  • the motor driving the fan may also be used, via appropriate motion transmission means, to also rotatably drive the clothes-holding drum.
  • said machine is improved in the following manner: with reference to Fig. 1, inside of said conduit 2, and preferably upstream the drum, is placed an auxiliary heating resistor 10 connected to means that will be better explained further on and that are able to selectively activate/disconnect it.-
  • auxiliary resistance 10 during the initial phase of the drying cycle, as the heating power is higher than the normal heating power supplied by the main resistance 9, said auxiliary resistance is connected so that an additional heating power is supplied having the aim of heating in an accelerated way the drying air, so that the overall time length of the cycle is shortened.
  • auxiliary resistance 10 when the humidity contained in the drum is heated at a level required to start its evaporation, then said auxiliary resistance 10 is no more required and so it can be disconnected both manually or automatically; in the latter case its switching-off may depend, for instance, on the drying air temperature, or on the time elapsed from the cycle starting time.
  • auxiliary resistance 10 is associated by a switching means 30 to a circuit able to connect it in series to one connection 19 of the motor 7, and to selectively disconnect it so that the motor 7 be again supplied with its nominal voltage.- (See fig. 2)
  • a switching means 30 is used, that is provided with three poles 12, 13 and 14, and is connected in such a way that two of its fixed poles 12 and 13 are connected to respective terminals R1 and R2 of said auxiliary resistance 10, while the third pole 13, movable between the first said two poles, is connected to an electric connection terminal 20 of said motor 7; then one of said two fixed poles, the pole 14 in fig. 2, is connected to one line of the electric A.C. power supply.
  • first automatic control means 25 can be provided; said automatic means 25, well known in the art, are so implemented and arranged in order to activate said switch 30 so that said auxiliary resistance 10 is connected/disconnected according to pre-defined parameters or operating modes.
  • said resistance 10 can be connected on the start of the drying cycle and disconnected when the temperature of the drying air, as detected by a proper temp. sensor not shown, reaches a pre-defined value, or after a pre-defined time elapsed from the start of the drying cycle.
  • Said first automatic means 25 may advantageously be programmed so that they selectively operate in the final phase of the drying cycle; in the facts in said phase the drying air, although very hot, may be not able to fully draw away the little residual humidity still in the laundry, and so it results very useful to be able to supply a short final over-heating to optimize the drying cycle; furthermore in this phase a too effective air ventilation is not strictly required, as the laundry is almost dried and so there is no need either to take away some remarkable amount of humidity, or to strongly condense such little humidity.-
  • Said first automatic means 25 can either operate autonomously, or they can be disconnected by manually activating second means 26, so to restore the normal mode of operation, should this be requested by specific requirements.
  • third means 27 can be provided that are able to exclude the automatic operation of said first means 25 and that in a fully manual way can connect/disconnect said auxiliary resistance 10 away from the related circuit.
  • the improvement consists in programming said control means so that said auxiliary resistance 10 may be connected only after the starting of the motor revolution.
  • the present invention may anyway be also embodied in a manner differing from the one described just above, in which this different embodiment is practically based on the kind of electric circuit connected to said auxiliary resistance 10.
  • an interrupter switch 34 is placed in series to the line "L" connected to the motor 7; the two poles 32 and 33 of said switch 34 are respectively connected to the two terminals of said auxiliary resistance 10; it is then quite clear that when the switch 34 is closed , the current flows through said same switch 34, the resistance 10 being clearly short-circuited by the same switch 34.
  • the drying machine under test was using an asynchronous motor of 190 W, 240 Vac, and the auxiliary resistance was 70 Ohms.-

Landscapes

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

Claims (9)

  1. Machine à sécher le linge, ou machine combinée à laver et sécher le linge, comprenant un tambour (1) contenant le linge à sécher, un conduit (2) pour la circulation de l'air de séchage, un premier ventilateur (5) adapté pour insuffler un premier courant d'air de séchage à travers ledit tambour et dans ledit conduit (2), une résistance principale (9) placée dans ledit conduit (2), un moteur (7) apte à faire tourner sélectivement dans des directions opposées ledit tambour et ledit premier ventilateur (5), une résistance électrique auxiliaire de chauffage (10) placée dans ledit conduit (2), ladite résistance auxiliaire de chauffage étant connectable sélectivement, caractérisée en ce que ladite résistance auxiliaire de chauffage peut être connectée et/ou déconnectée en série sur une ligne de l'alimentation électrique dudit moteur (7).
  2. Machine à sécher le linge, ou machine combinée à laver et sécher le linge, selon la revendication 1, caractérisée en ce qu'elle comprend des moyens (30) de déviation électrique munis de deux pôles, dans lequel un premier pôle (12) est raccordé à une première borne (R1) de ladite résistance auxiliaire de chauffage, un deuxième pôle (13) est connecté à l'un des moyens de connexion (20) dudit moteur (7), et un troisième pôle (14) est raccordé à la deuxième borne (R2) de ladite résistance auxiliaire (10), ledit deuxième pôle (13) pouvant être raccordé sélectivement audit premier (12) ou audit troisième (14) desdits pôles.
  3. Machine selon l'une quelconque des revendications 1 ou 2, caractérisée en ce qu'elle comprend des moyens d'interruption électrique, de préférence un commutateur électrique (34) placé en série avec l'alimentation électrique dudit moteur électrique (7), ladite résistance auxiliaire de chauffage (10) étant raccordée à deux pôles respectifs (32, 33) desdits moyens d'interruption électrique (31).
  4. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle est munie de premiers moyens de commande (25) pouvant raccorder automatiquement ladite résistance auxiliaire de chauffage (10) dans les phases initiales et/ou dans la phase finale d'un cycle de séchage.
  5. Machine selon la revendication 4, caractérisée en ce qu'elle est munie de deuxièmes moyens de commande (26) qui sont actionnables sélectivement et qui peuvent arrêter le fonctionnement desdits premiers moyens de commande (25).
  6. Machine selon la revendication 4 ou 5, caractérisée en ce qu'elle est munie de troisièmes moyens de commande (27) qui sont actionnables sélectivement et qui peuvent connecter/déconnecter sélectivement ladite résistance auxiliaire de chauffage (10).
  7. Machine selon l'une des revendications 4 à 6, caractérisée en ce que lesdits premiers moyens de commande (25) peuvent raccorder automatiquement ladite résistance auxiliaire de chauffage (10) en fonction de la température de l'air à l'intérieur dudit conduit (2) ou à l'intérieur dudit tambour (1).
  8. Machine selon l'une des revendications 4 à 7, caractérisée en ce que lesdits premiers moyens de commande (25) peuvent déconnecter automatiquement ladite résistance auxiliaire de chauffage en fonction du temps écoulé depuis un instant prédéterminé, de préférence imposé par l'instant de démarrage du cycle.
  9. Machine selon l'une des revendications 4 à 8, caractérisée en ce que lesdits premiers moyens de commande (25) peuvent déconnecter automatiquement ladite résistance auxiliaire de chauffage (10) au démarrage du cycle de séchage.
EP04104117A 2004-08-27 2004-08-27 Sèche-linge domestique à haute efficacité Not-in-force EP1630279B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP04104117A EP1630279B1 (fr) 2004-08-27 2004-08-27 Sèche-linge domestique à haute efficacité
ES04104117T ES2282800T3 (es) 2004-08-27 2004-08-27 Secadora de ropa domestica de alto rendimiento.
DE602004005036T DE602004005036T2 (de) 2004-08-27 2004-08-27 Hocheffizienter Haushaltswäschetrockner
SI200430304T SI1630279T1 (sl) 2004-08-27 2004-08-27 Visoko učinkoviti gospodinjski sušilnik za perilo
AT04104117T ATE355408T1 (de) 2004-08-27 2004-08-27 Hocheffizienter haushaltswäschetrockner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04104117A EP1630279B1 (fr) 2004-08-27 2004-08-27 Sèche-linge domestique à haute efficacité

Publications (2)

Publication Number Publication Date
EP1630279A1 EP1630279A1 (fr) 2006-03-01
EP1630279B1 true EP1630279B1 (fr) 2007-02-28

Family

ID=34929495

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04104117A Not-in-force EP1630279B1 (fr) 2004-08-27 2004-08-27 Sèche-linge domestique à haute efficacité

Country Status (5)

Country Link
EP (1) EP1630279B1 (fr)
AT (1) ATE355408T1 (fr)
DE (1) DE602004005036T2 (fr)
ES (1) ES2282800T3 (fr)
SI (1) SI1630279T1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008007971A1 (de) * 2008-02-07 2009-08-13 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner mit Wärmepumpe und Heizung sowie Verfahren zu seinem Betrieb

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3171805D1 (en) * 1981-06-19 1985-09-19 Verzinkerei Zug Ag Method of drying laundry and machine for carrying out the method
JPS60103999A (ja) * 1983-11-11 1985-06-08 株式会社日立製作所 衣類乾燥機の発熱量制御装置
FR2681347B1 (fr) * 1991-09-13 1996-06-21 Ciapem Seche-linge a fonctionnement automatique permettant le controle du degre de sechage du linge.
JPH0759995A (ja) * 1993-08-27 1995-03-07 Toshiba Corp 衣類乾燥機

Also Published As

Publication number Publication date
EP1630279A1 (fr) 2006-03-01
ATE355408T1 (de) 2006-03-15
DE602004005036D1 (de) 2007-04-12
SI1630279T1 (sl) 2007-08-31
ES2282800T3 (es) 2007-10-16
DE602004005036T2 (de) 2007-11-22

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