EP0351608B1 - Wäschetrockner - Google Patents

Wäschetrockner Download PDF

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Publication number
EP0351608B1
EP0351608B1 EP89111968A EP89111968A EP0351608B1 EP 0351608 B1 EP0351608 B1 EP 0351608B1 EP 89111968 A EP89111968 A EP 89111968A EP 89111968 A EP89111968 A EP 89111968A EP 0351608 B1 EP0351608 B1 EP 0351608B1
Authority
EP
European Patent Office
Prior art keywords
drum
laundry
machine
drying machine
drying
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
EP89111968A
Other languages
English (en)
French (fr)
Other versions
EP0351608A1 (de
Inventor
Graziello Grandin
Maurizio Saccia
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.)
Industrie Zanussi SpA
Original Assignee
Industrie Zanussi SpA
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 Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Publication of EP0351608A1 publication Critical patent/EP0351608A1/de
Application granted granted Critical
Publication of EP0351608B1 publication Critical patent/EP0351608B1/de
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
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • D06F58/06—Mountings for the rotating drums
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/08—Humidity
    • D06F2103/10—Humidity expressed as capacitance or resistance
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/30—Blowers
    • 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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • 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
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity

Definitions

  • the present invention relates to a drying machine for laundry, in particular a domestic dryer provided with a drum for the laundry supported within the cabinet of the machine to rotate about a horizontal axis and equipped with sensor electrodes for measuring the degree of residual moisture in the laundry.
  • this type of machine is provided with sensor electrodes adapted to measure the conductance of the laundry and thus the degree of residual moisture therein in order to control the drying process and prevent the laundry from being damaged by any overdrying and overheating.
  • Electrodes are joined up to the electric circuit of the machine and connected to the driving motor of the drum, to the motor of the fan and to the heating elements for the drying air.
  • the sensor electrodes are generally disposed within the drum in such a way as to be in contact with the laundry during the entire drying phase and to produce electrical output signals corresponding to the different degrees of drying of the laundry during the operation of the machine.
  • This drying machine for laundry is also provided with a suitable moisture control means consisting, for example, of an electronic comparator of the conventional type connected to the sensor electrodes by means of sliding contacts on the drum and designed to perform comparison between the electrical signals from the electrodes and further electrical reference signals corresponding to the various states of drying of the laundry.
  • a suitable moisture control means consisting, for example, of an electronic comparator of the conventional type connected to the sensor electrodes by means of sliding contacts on the drum and designed to perform comparison between the electrical signals from the electrodes and further electrical reference signals corresponding to the various states of drying of the laundry.
  • control means switches off the heating elements and the driving motors of the drum and the fan, thereby ending the drying process of the laundry.
  • European patent application no. 0136.491 from the same applicant discloses means for sliding support of the front flange of the drum consisting of bearings housed, either in fixed or in pivoting fashion, within a collar disposed inside the cabinet of the machine. It is known from the same applicant's European patent no. 0106283 to realize the sensor electrodes by means of the two metal half shells which form the laundry drum.
  • the two metal half shells are separated by an insulating ring and connected to the moisture control means by means of the sliding contact of a brush on the raised edge of the front flange of the drum.
  • inventive drying machine 3 consists substantially of an outer cabinet 4 housing a drum 5 for the laundry to be dried and rotated by a motor 6 and by transmission means known per se and not shown.
  • Machine 3 also comprises all those mechanical and electrical means (for example fans, pneumatic conduits, heating means for the drying air) necessary for its operation and sufficiently well known that they can be disregarded in the following description.
  • mechanical and electrical means for example fans, pneumatic conduits, heating means for the drying air
  • drum 5 has a front opening 10 and consists of two half shells 7, 8 functioning directly as sensor electrodes and separated from each other by a ring 9 made of electrically insulating material.
  • Drum 5 is supported in rotating fashion within cabinet 4 both in correspondence with the rear pivot pin, not shown, and in correspondence with the edge of front opening 10.
  • Rear half shell 7 is connected electrically to ground in correspondence with the contact between the pivot pin of drum 5 and cabinet 4 of machine 3.
  • Front half shell 8 is made alive by means of a sliding contact which will be described below and realizes the connection both with the power supply of machine 3 and with the terminal of a conventional electronic moisture control means joined up to the electrical circuit of the machine and not shown.
  • the other terminal of the electronic moisture control means is connected to ground.
  • the edge of front opening 10 of drum 5 is bent toward the front side of cabinet 4 (Fig. 2) by a horizontal piece 11 having an end 12 curved toward the rear side of cabinet 4.
  • a circular support collar 13 having an S-shaped radial section is fixed in correspondence with the edge of opening 10 of drum 5.
  • Collar 13 has a portion 14 disposed internally at opening 10 of drum 5 and in a position below horizontal piece 11 of the edge thereof, and a portion 15 supported on curved end 12 of said edge.
  • Portion 14 of collar 13 houses at least two bearings (only one bearing 16 being visible in the figures) made of antifriction material and adapted to effect the sliding support of edge 11 of drum 5.
  • inventive drying machine 3 at least one supporting bearing 16 is realized in antifriction material incorporating integrally an expedient percentage of material with elevated electrical conductivity (for example graphite).
  • support bearing 16 advantageously also realizes the sliding contact for the residual moisture control means for the laundry, thus avoiding the use of a disadvantageous additional component (brush contacts or the like).
  • the electrical conductivity of support bearing 16 can be realized by incorporating therein the metal elements or coating the surface thereof in contact with the drum by means of metal layers or metallic plating.

Landscapes

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

Claims (2)

  1. Wäschetrockner (3), insbesondere ein Haushaltswäschetrockner, der ein Außengehäuse (4) umfaßt, in dessem Inneren die Trommel (5), welche zur Aufnahme der zu trocknenden Wäsche vorgesehen ist, so gelagert ist, daß sie sich um eine horizontale Achse dreht, wobei die Trommel ferner mit einer zentralen Öffnung (10) versehen ist, die in einem entsprechenden Bund (13) angeordnet ist, der in dem Gehäuse angeordnet und mit Traglagern (16) für eine verschiebbare Lagerung der Trommel versehen ist,
    dadurch gekennzeichnet, daß
    die Trommel (5) im wesentlichen aus zwei metallenen Halbschalen (7, 8) besteht, die durch einen elektrischen Isolierring (9) voneinander getrennt und mit der Stromversorgung bzw. der Erdung der Maschine verbunden sind, um als Elektroden zum Fühlen der Wäschefeuchtigkeit zu wirken und mit einer für sich bekannten Trocknungssteuervorrichtung (MC), die mit den Sensorelektroden verbunden ist, zusammenzuwirken, wobei wenigstens ein Gleitlager (16) der Trommel (5) ebenfalls den elektrischen Kontakt zwischen der Trommel (5) und der Vorrichtung zur Regelung der Restfeuchtigkeit der in der Trommel (5) aufgenommenen Wäsche herstellt, und daß das Gleitlager aus Antifriktionsmaterial besteht und Material mit einer erhöhten elektrischen Leitfähigkeit umfaßt.
  2. Wäschetrockner nach Anspruch 1,
    dadurch gekennzeichnet, daß
    das elektrisch leitfähige Material, das innerhalb des Gleitlagers (16) vorgesehen ist, aus Graphit besteht.
EP89111968A 1988-07-22 1989-06-30 Wäschetrockner Expired - Lifetime EP0351608B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8834036U IT218178Z2 (it) 1988-07-22 1988-07-22 Macchina asciugabiancheria.
IT3403688U 1988-07-22

Publications (2)

Publication Number Publication Date
EP0351608A1 EP0351608A1 (de) 1990-01-24
EP0351608B1 true EP0351608B1 (de) 1992-12-09

Family

ID=11238899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89111968A Expired - Lifetime EP0351608B1 (de) 1988-07-22 1989-06-30 Wäschetrockner

Country Status (3)

Country Link
EP (1) EP0351608B1 (de)
DE (1) DE68903801T2 (de)
IT (1) IT218178Z2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPN20030004U1 (it) * 2003-02-19 2004-08-20 Electrolux Home Products Corporatio N N V Asciugabiancheria domestica silenziosa
CN1854381B (zh) * 2005-04-25 2010-04-28 海尔集团公司 一种新型烘干机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335501A (en) * 1964-06-24 1967-08-15 Whirlpool Co Electronic dry control with storage capacitors for dryers
IT1159766B (it) * 1982-10-08 1987-03-04 Zanussi A Spa Industrie Macchina asciugabiancheria di tipo perfezionato
IT8334041V0 (it) * 1983-09-02 1983-09-02 Zanussi A Spa Industrie Dispositivo di supporto e di tenuta per il cesto di asciugabiancheria.
US4738034A (en) * 1985-12-16 1988-04-19 Kabushiki Kaisha Toshiba Drying machine

Also Published As

Publication number Publication date
EP0351608A1 (de) 1990-01-24
IT8834036V0 (it) 1988-07-22
DE68903801T2 (de) 1993-06-17
IT218178Z2 (it) 1992-04-08
DE68903801D1 (en) 1993-01-21

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