EP1113104A1 - Verfahren zur Kontrolle der Wäschetrocknung in einem Wäschetrockner - Google Patents

Verfahren zur Kontrolle der Wäschetrocknung in einem Wäschetrockner Download PDF

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Publication number
EP1113104A1
EP1113104A1 EP00403308A EP00403308A EP1113104A1 EP 1113104 A1 EP1113104 A1 EP 1113104A1 EP 00403308 A EP00403308 A EP 00403308A EP 00403308 A EP00403308 A EP 00403308A EP 1113104 A1 EP1113104 A1 EP 1113104A1
Authority
EP
European Patent Office
Prior art keywords
laundry
dryer
threshold
door
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.)
Granted
Application number
EP00403308A
Other languages
English (en)
French (fr)
Other versions
EP1113104B1 (de
Inventor
André Maziere
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 Laundry Systems France SNC
Original Assignee
Electrolux Systemes de Blanchisserie SNC
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 Systemes de Blanchisserie SNC filed Critical Electrolux Systemes de Blanchisserie SNC
Publication of EP1113104A1 publication Critical patent/EP1113104A1/de
Application granted granted Critical
Publication of EP1113104B1 publication Critical patent/EP1113104B1/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
    • D06F58/32—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
    • 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
    • D06F2105/44—Opening, closing or locking of doors
    • 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 invention relates to a method for check the correct operation of a clothes dryer, and in particular the degree of drying of the linen treated in this dryer.
  • the invention applies to all types of dryer laundry, in which a load of laundry previously washed is introduced in the wet state and comes out in the state dry. It relates in particular to clothes dryers industrial and semi-industrial, used in particular, although not exclusively, in laundries used to process laundry from hospitals.
  • a load of laundry is heated and brewed for a period of time generally adjustable.
  • a ventilation allows extract the water vapor released by the laundry due to its heating.
  • the condition the dryness of the laundry coming out of the machine depends on the nature of the textile, its moisture content when is introduced into the machine, from the temperature of heating and duration of treatment.
  • heating temperature and the dryer operating times are set manually by the operator. This one performs these settings essentially depending on the nature of the textile and its humidity at the entrance of the dryer. The state of dryness of the laundry coming out of it is therefore totally dependent on seriousness, operator skill and experience.
  • the subject of the invention is precisely a method designed to control precisely and reliably the efficiency of drying clothes in a clothes dryer linen, in particular to be able to guarantee that the rate residual moisture from laundry treated in this dryer either zero or low enough to avoid a rapid growth of bacteria eventually present in the laundry.
  • this result is obtained by means of a character control process laundry aseptic, before opening minus one door of a clothes dryer, characterized in that it consists in determining the humidity rate residual laundry inside the dryer, at compare said rate to a maximum allowable threshold and to issue an authorization signal to open the wears when the residual humidity is below the maximum allowable threshold.
  • the residual moisture level is determined continuous laundry.
  • the dryer includes a metal drum and at least one insulated agitator bucket electrically from this drum, we determine advantageously the residual moisture content of the laundry by measuring the electrical resistivity between the bucket and the drum.
  • the maximum admissible threshold is preferably adjustable.
  • said threshold is advantageously at most equal to 2%.
  • the dryer shown schematically in the figure single includes a parallelepipedic envelope 10 in which is housed a metal drum 12, suitable for rotate around a horizontal axis.
  • Means of control (not shown) housed inside the envelope 10 are capable of driving the drum 12 in rotation about its axis with or without inversion of meaning.
  • the front face of the envelope 10 comprises a circular opening centered on the axis of the drum. This opening is normally closed by a door 14 able to pivot around a vertical hinge 16. The door 14 is closed by a lock 18.
  • the opening of door 14 gives access to inside the drum 12, to introduce into this one load of laundry to dry or extract said load when the drying cycle is finished.
  • the clothes dryer shown schematically on the single figure also includes means of heating (not shown) which may be of a nature any (gas, electricity, steam or fluid coolant).
  • one or more agitator buckets are placed inside the drum 12 to increase the stirring of the laundry and improve drying efficiency.
  • one or more humidity sensors 20 are placed inside the drum 12, so as to measure the humidity present in the laundry contained in the dryer.
  • the humidity sensor 20 can be consisting of a detector able to measure the electrical resistivity between the metal drum 12 and one of the agitator buckets (not shown) mounted inside of it.
  • This resistivity detector electric can then include a conductive track formed on an agitator bucket electrically isolated by compared to the metal drum 12, as well as one or two coals mounted on the drum so as to rub on this conductive track.
  • humidity sensors 20 such as infrared absorption detectors, sensors measuring the ohmic resistance of the laundry as well as its capacity, etc ... can also be used, without depart from the scope of the invention.
  • the residual humidity level determined by the sensor (s) 20 is measured in continuous when the dryer is in operation.
  • the signals delivered by the sensor (s) humidity 20 are transmitted to an electronic circuit 22, which compares the rate residual humidity measured by the sensor (s) and a maximum allowable threshold for the humidity level of the laundry extracted from the dryer.
  • the electronic circuit 22 in which is memorized the maximum admissible threshold for the residual moisture content of laundry leaving the machine is arranged in such a way that this maximum threshold admissible is adjustable.
  • the maximum threshold admissible for the residual moisture content of the laundry leaving the machine is preferably at most equal at around 2%.
  • the opening door 14 of the dryer can only be done when the residual moisture content of the laundry in the dryer is below a maximum threshold eligible. Therefore, the proliferation of bacteria in the laundry extracted from the dryer can be avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Drying Of Solid Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
EP00403308A 1999-11-30 2000-11-27 Verfahren zur Kontrolle der Wäschetrocknung in einem Wäschetrockner Expired - Lifetime EP1113104B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9915063A FR2801616B1 (fr) 1999-11-30 1999-11-30 Procede de controle du sechage du linge dans un sechoir
FR9915063 1999-11-30

Publications (2)

Publication Number Publication Date
EP1113104A1 true EP1113104A1 (de) 2001-07-04
EP1113104B1 EP1113104B1 (de) 2004-04-28

Family

ID=9552708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00403308A Expired - Lifetime EP1113104B1 (de) 1999-11-30 2000-11-27 Verfahren zur Kontrolle der Wäschetrocknung in einem Wäschetrockner

Country Status (10)

Country Link
US (1) US6378228B1 (de)
EP (1) EP1113104B1 (de)
AT (1) ATE265566T1 (de)
CZ (1) CZ301622B6 (de)
DE (1) DE60010211T2 (de)
DK (1) DK1113104T3 (de)
ES (1) ES2218085T3 (de)
FR (1) FR2801616B1 (de)
PT (1) PT1113104E (de)
TR (1) TR200003471A3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023540515A (ja) * 2020-09-04 2023-09-25 エルジー エレクトロニクス インコーポレイティド 衣類処理装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039645A1 (de) * 1980-05-06 1981-11-11 Thomson-Brandt Wäschetrockner mit elektronischer Programmsteuerung
GB2217824A (en) * 1988-04-27 1989-11-01 Nicholas Parsons Drying apparatus
JPH02255199A (ja) * 1989-03-29 1990-10-15 Toshiba Corp 乾燥機

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4781041A (en) * 1984-12-10 1988-11-01 Quadrex Hps, Inc. Apparatus for cleaning garments and soft goods contaminated with nuclear, chemical and/or biological contaminants
US5737852A (en) * 1996-08-05 1998-04-14 White Consolidated Industries, Inc. Dryness control for clothes dryer
US5899005A (en) * 1997-03-13 1999-05-04 General Electric Company System and method for predicting the dryness of clothing articles
US6047486A (en) * 1998-09-03 2000-04-11 Whirlpool Corporation Control system for a dryer
US6020698A (en) * 1998-10-09 2000-02-01 Whirlpool Corporation Timer for use with an electronic control in controlling an appliance
US6199300B1 (en) * 2000-03-01 2001-03-13 Whirlpool Corporation Method for energy efficient control of a dryer of clothes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039645A1 (de) * 1980-05-06 1981-11-11 Thomson-Brandt Wäschetrockner mit elektronischer Programmsteuerung
GB2217824A (en) * 1988-04-27 1989-11-01 Nicholas Parsons Drying apparatus
JPH02255199A (ja) * 1989-03-29 1990-10-15 Toshiba Corp 乾燥機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 582 (C - 0792) 26 December 1990 (1990-12-26) *

Also Published As

Publication number Publication date
TR200003471A2 (tr) 2001-07-23
FR2801616A1 (fr) 2001-06-01
CZ20004416A3 (cs) 2001-08-15
FR2801616B1 (fr) 2002-03-01
US6378228B1 (en) 2002-04-30
PT1113104E (pt) 2004-09-30
DK1113104T3 (da) 2004-08-09
DE60010211D1 (de) 2004-06-03
CZ301622B6 (cs) 2010-05-05
EP1113104B1 (de) 2004-04-28
ES2218085T3 (es) 2004-11-16
DE60010211T2 (de) 2005-05-04
ATE265566T1 (de) 2004-05-15
TR200003471A3 (tr) 2001-07-23

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