EP1862581B1 - Method for operating a domestic appliance, especially a home dryer or a washing machine, and domestic appliance - Google Patents

Method for operating a domestic appliance, especially a home dryer or a washing machine, and domestic appliance Download PDF

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Publication number
EP1862581B1
EP1862581B1 EP06011421A EP06011421A EP1862581B1 EP 1862581 B1 EP1862581 B1 EP 1862581B1 EP 06011421 A EP06011421 A EP 06011421A EP 06011421 A EP06011421 A EP 06011421A EP 1862581 B1 EP1862581 B1 EP 1862581B1
Authority
EP
European Patent Office
Prior art keywords
steam
domestic appliance
textiles
room
program
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.)
Active
Application number
EP06011421A
Other languages
German (de)
French (fr)
Other versions
EP1862581B2 (en
EP1862581A1 (en
Inventor
Hans-Joachim Klug
Uta Kreutzfeldt
Johannes Sierl
Thomas Loy
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37116050&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1862581(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP06011421.2A priority Critical patent/EP1862581B2/en
Priority to MX2008015307A priority patent/MX2008015307A/en
Priority to BRPI0711852-0A priority patent/BRPI0711852A2/en
Priority to KR1020087032121A priority patent/KR20090017663A/en
Priority to US12/302,657 priority patent/US20090235465A1/en
Priority to RU2008152047/12A priority patent/RU2450093C2/en
Priority to PCT/EP2007/004857 priority patent/WO2007137861A1/en
Priority to CN2007800200241A priority patent/CN101454498B/en
Publication of EP1862581A1 publication Critical patent/EP1862581A1/en
Publication of EP1862581B1 publication Critical patent/EP1862581B1/en
Application granted granted Critical
Publication of EP1862581B2 publication Critical patent/EP1862581B2/en
Active 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
    • D06F34/32—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress characterised by graphical features, e.g. touchscreens
    • 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 
    • D06F58/203—Laundry conditioning arrangements
    • 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
    • D06F58/30—Drying processes 
    • 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
    • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • 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
    • D06F2103/40—Opening or locking status 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/38—Conditioning or finishing, e.g. control of perfume injection
    • D06F2105/40—Conditioning or finishing, e.g. control of perfume injection using water or steam
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user
    • D06F2105/60—Audible signals
    • D06F39/40—

Definitions

  • the action is taken, when the program for treating textiles with steam is interrupted by activation of a switching equipment of the domestic appliance.
  • the switching equipment comprises preferred a stop-button or a start/rest-button. Theses buttons are as a rule part of a operating panel of the domestic appliance.
  • the switching equipment can also be a kind of virtual button e.g. a button displayed on a screen e.g. displayed on a touch screen.
  • the action is also taken, when the run of the program for treating textiles with steam is interrupted by a failure of the domestic appliance.
  • a failure can be e.g. a short interruption of the supply voltage of the domestic appliance which can cause the interruption of the run of the program for treating textiles with steam.
  • the supply of steam to the room of the domestic appliance containing the textiles can be at least partially stopped by closing a conduit which is used for supplying the room with steam.
  • the conduit can thereby be closed by a valve, preferred by a magnetic valve.
  • the supply of steam to the room of the domestic appliance containing the textiles can be at least partially stopped by the reversion of the flux of the steam through the steam unit.
  • a reversion of the flux of the steam through the steam unit thus the steam do not flow through a conduit and an injector in direction to the room containing the textiles but flows in the opposite direction.
  • the pump of the steam unit which normally pumps water out of a water tank into the steam generator of the steam unit is thereby operated in a reversed mode. In the reversed mode the pump of the steam unit is operated in an opposite direction and pumps the steam already generated in the steam generator into the water tank.
  • a mechanism 17 for opening and closing the door 3 is equipped with additional sensing means 18.
  • the sensing means 18 are e. g. a light barrier or any other appropriate sensor for registering at once the opening of the door 3 with the mechanism 17.
  • the sensing means 18 are connected to the control 40 (not shown in the drawings). Therefore the control 40 can at once register when the door 3 is opened.
  • the optical warning signal is released by means of an optical display preferably arranged in the front of the home dryer 1.
  • the optical display can be e.g. a lamp, particularly a red lamp 36 or a LED-display or the LCD-display 31.
  • the optical warning signal can thus be only a red warning light or in case of the LCD-display 31 red blinking words like "attention- hot steam".
  • control 40 stops after registering an interruption of a run of a program for treating textiles with steam the further supply of hot steam of the steam unit to the drum 4.
  • the control 40 especially stops the operation of the pump 21 of the steam unit and the operation of the heating of the heat generator 22 of the steam unit.
  • the steam unit When the conduit 27 is connected to the magnetic valve 25 the steam unit can also be depleted of the steam by means of the magnetic valve 25 and the conduit 27. In this case the magnetic valve 26 is not necessary.
  • the value of the temperature can be registered with a separate temperature sensor 19 connected to the control 40 or in a respectively way with a not shown temperature sensor of the steam generator 22 whereby based on the temperature of the steam generator 22 and a known cool down behaviour of the steam in the drum 4 the control 40 computes the temperature in the drum 4.
  • the value of the atmospheric moisture can be registered with a separate sensor 28 connected to the control 40 or with a already existing sensor of the home dryer 1.
  • the invention was afore described in connection with a home dryer of the condensation type. But the invention is not limited to home dryer of the condensation type. The invention is also applicably in home dryers using a wet exhausted air process as illustrated in FIG 3 . Components shown in FIG 3 which are in type and function identically or comparably with components shown in FIG 2 have the same reference numerals.
  • heated air is conducted in the drum 4 by means of the conduit 7 for supply air, the heating element 8 and the fan 14 for drying wet textiles contained in the drum 4.
  • the air charged with moisture is conducted from the drum 4 to the outside of the home dryer.
  • the invention is also applicable to washing machines comprising a steam unit and an operating mode for treating textiles with hot steam.

Description

  • The invention concerns a method for operating a domestic appliance and a domestic appliance, especially a home dryer or a washing machine,
  • Home dryers and washing machines are well known in the state of the art. In relation to home dryers it is thereby known to dry textiles using a condensation process or using a wet exhausting air process.
  • It has been found out that the treatment of textiles can be improved by using steam which is applied to the textiles e.g. in a dryer during one operation mode of the dryer. One aspect of such a process is to prepare the textiles in a better way for the following ironing. Another aspect is to remove unwanted odours out of the textiles.
  • The dryer comprises as a rule a rotatable drum in which the textiles are contained when the textiles are treated with hot water steam. The steam generated by a steam unit is conducted by a conduit and a steam injector into the drum. The steam has during the operation in the drum normally a temperature of equal or more than 100°C. Opening the door used for loading and un-loading the drum of the dryer with textiles during the run of a program for treating textiles with steam can therefore be dangerously for an operator.
  • WO 03/057966 discloses a combined automated system for performing any combination of cleaning fabric, drying fabric and ironing fabric comprising at least one treatment unit configured to treat the fabric item with a treatment agent, at least one suspension system for suspending said at least one fabric item in said treatment unit and at least one activation element for activating said treatment unit.
  • US 5,315,727 discloses a tub cover which is mounted on an upper opening of a tub of a washing machine, and includes a case shoulder and an inner cover having a condenser with the inner cover hinged with the case shoulder. The condenser comprises a steam inflow opening for enabling the upward passing steam from the tub, a water container member having a plurality of heat-exchanger plates, for heat-exchanging with steam entering therein, and a steam outflow opening for passing outward steam heat-exchanged in the container water member. The heat-exchanger plate comprises a plurality of orifices provided in a plurality of convex portions, and a water container formed between the convex portions.
  • US 5,111,529 discloses an electric warm-air humidifier comprising an evaporation chamber which has a steam outlet and contains an electric heating element. The chamber and the heating element are immersed in water contained in the main compartment of an open, removable tray, having a smaller filling compartment communicating with the main compartment. The tray may be removed from the housing for cleaning. The neck of an inverted, removable jug filled with water is placed into the filling compartment. A blower is mounted above the evaporation chamber and delivers cool air through a duct which communicates with the evaporation chamber via its steam outlet. The humidifier also contains a control element to prevent damage to the heating element and signal lamps warning an attendant to refill the jug with water.
  • It is therefore an object of the present invention to propose a method for operating a domestic appliance and a domestic appliance as mentioned above which at least reduce the risk of an accident with hot steam during the operation of the domestic appliance.
  • This object is inventively achieved by the method for operating a domestic appliance, especially a home dryer or a washing machine, which domestic appliance comprises a steam unit and an operating mode for treating textiles with hot steam, wherein at least one action for protection of an operator of the domestic appliance is taken when an interruption of an active program for treating textiles with hot steam occurs. The inventors have recognized that every interruption of a program for treating textiles with steam should be supervised because independently thereof whether the interruption was caused by the operator or not there is always potentially the danger that the operator opens the door of the domestic appliance without thinking about the hot steam inside the domestic appliance. It is therefore reasonable to provide at least one preferably more actions that the operator is not hurt by the hot steam generated in the domestic appliance, when an interruption of a run of a program for treating textiles with hot steam occurs.
  • According to one variant of the invention the action is taken, when a door for loading and un-loading a room of the domestic appliance with textiles is opened, whereby the opening of the door interrupts the program for treating the textiles with steam. Normally the domestic appliance has a door to a rotatable drum containing the textiles during the operation of the domestic appliance. The door comprises a mechanism for opening and closing the door. It is proposed to have sensing means working together with the mechanism for opening and closing the door. Preferably the sensing means are connected with control means of the domestic appliance. The control means finally initiate the action for the protection of the operator, when the door is opened during a run of a program for treating the textiles with steam.
  • According to another variant of the invention the action is taken, when the program for treating textiles with steam is interrupted by activation of a switching equipment of the domestic appliance. The switching equipment comprises preferred a stop-button or a start/rest-button. Theses buttons are as a rule part of a operating panel of the domestic appliance. The switching equipment can also be a kind of virtual button e.g. a button displayed on a screen e.g. displayed on a touch screen.
  • The action is also taken, when the run of the program for treating textiles with steam is interrupted by a failure of the domestic appliance. Such a failure can be e.g. a short interruption of the supply voltage of the domestic appliance which can cause the interruption of the run of the program for treating textiles with steam.
  • A preferred action is to release at least one warning signal to the operator which calls the operator's attention to the hot steam inside the domestic appliance especially inside the drum. The warning signal can be an acoustic and/or an optical warning signal. When the warning signal is an optical warning signal it is preferred displayed with an optical display, which comprises a lamp or a LED-display (light emitting diode) or the operating panel of the domestic appliance, which operating panel comprises particularly a LCD-display (liquid crystal display).
  • Another action for protection of an operator is to stop at least partially the supply of steam to the room, particularly to the drum of the domestic appliance containing the textiles, when an interruption of a run of a program for treating textiles with steam occurs. Thereby the control means of the domestic appliance stop as a rule the activity of the steam unit, in particular the activity of the pump of the steam unit and/or the heating of the steam generator.
  • According to variants of the invention the supply of steam to the room of the domestic appliance containing the textiles can be at least partially stopped by closing a conduit which is used for supplying the room with steam. The conduit can thereby be closed by a valve, preferred by a magnetic valve.
  • Another possibility according to the invention to protect an operator is to deplete the steam unit of the domestic appliance of steam at least partially, when an interruption of a run of a program for treating textiles with steam occurs. This can be achieved by a valve, preferred a magnetic valve. Preferably the opening and closing of the valve is controlled by the control of the domestic appliance. The steam is thereby conducted in a part or in parts of the domestic appliance to which the operator has as a rule no contact or no access.
  • According to embodiments of the invention the supply of steam to the room of the domestic appliance containing the textiles can be at least partially stopped by the reversion of the flux of the steam through the steam unit. By a reversion of the flux of the steam through the steam unit thus the steam do not flow through a conduit and an injector in direction to the room containing the textiles but flows in the opposite direction. Preferred the pump of the steam unit which normally pumps water out of a water tank into the steam generator of the steam unit is thereby operated in a reversed mode. In the reversed mode the pump of the steam unit is operated in an opposite direction and pumps the steam already generated in the steam generator into the water tank.
  • It is also possible for the protection of the operator to conduct the steam contained in the drum of the domestic appliance out of the drum, when an interruption of a run of a program for treating textiles with steam occurs. This can be achieved by a separate conduit connected with one side to the drum and with the other side e. g. to the outside of the domestic appliance. Preferably there is a controllable valve for opening the passage through the conduit. Advantageously a fan is used for conducting the steam out of the drum containing the textiles. Another possibility for conducting the steam out of the drum of the domestic appliance is to use an already existing conduit of the domestic appliance. Preferred is the use of the conduit of the supply air to the drum and/or the use of the conduit of the exhaust air out of the drum. Both conduits are normally used for air circulation during the process of drying textiles. The last mentioned embodiment is therefore particularly adapted for home dryers.
  • According to an embodiment of the invention the door for loading and un-loading the domestic appliance with textiles can not be opened after an interruption of an active program for treating textiles with steam until there is no more danger for an injury of an operator. Preferred the door for loading and un-loading the domestic appliance with textiles can not be opened for a certain period of time and/or until the temperature and/or the atmospheric moisture in the room of the domestic appliance containing the textiles has/have a certain value. The opening of the door is in these cases thus either time controlled or temperature controlled or atmospheric moisture controlled.
  • The domestic appliance can be in case of a dryer a dryer of the condensation type or a dryer of the exhaust air type.
  • The domestic appliance according to the invention comprises a control and a memory storing at least one program for treating textiles with steam, wherein the control is adjusted to execute at least one of the aforementioned methods.
  • Embodiments of the invention are illustrated in the accompanying schematic drawings. It is shown:
    • FIG 1
    a dryer in a front view,
    FIG 2
    a first embodiment of components of the dryer of FIG 1, partially shown in a schematic block diagram and
    FIG 3
    a second embodiment of components of the dryer of FIG 1, partially shown in a schematic block diagram.
  • The invention is consecutively exemplarily described for a domestic appliance in form of a home dryer. But the domestic appliance according to the invention can also be a washing machine comprising a steam unit as described later and an operating mode for treating textiles with steam.
  • FIG 1 shows a front view of a dryer, especially a home dryer 1. FIG 2 shows in one embodiment of the invention components of the home dryer 1 of FIG 1. The home dryer 1 of FIG 1 and FIG 2 is a condensation type dryer. The home dryer 1 comprises a housing 2 with a door 3 for loading and un-loading a drum 4 with not shown textiles. The drum 4 is rotatable around an axis A by means of a motor 5 and a belt 6. The drum 4 is in a not shown way respectively pivoted.
  • For drying textiles the home dryer 1 comprises a conduit 7 for the supply air to the drum 4, a heating element 8 in case of the on hand embodiment arranged in or near the conduit 7 for the supply air, a conduit 9 for the exhausted air, a heat exchanger 10, a sump 11, a pump 12, a water tank or condensate collector 13, a first fan 14 in case of the on hand embodiment arranged in the conduit 7 for the supply air and a second fan 15 arranged near the heat exchanger 10. The first fan 14 and the second fan 15 are connected to a drive motor 16.
  • Further the home dryer 1 comprises an operating panel 30 with an display 31 and a turning knob 32 for choosing a program for drying textiles and/or a program for treating textiles with steam. The operating panel 30 is connected to control means in form of a control 40 of the home dryer 1. The control 40 is preferably a program driven computer and comprises a memory 41. A plurality of different programs for drying textiles and programs for treating textiles with steam is stored in the memory 41 which can be chosen with the turning knob 32. The display 31 is preferably a LCD-display. The display 31 is particularly intended for displaying program information and operating data of the home dryer 1. The knob 32 and the display 31 can also be used for setting operating parameters of the home dryer 1.
  • In one operation mode of the home dryer 1, when a program for drying textiles is chosen by an operator with the turning knob 32 of the operating panel 30 the home dryer 1 is operated in an air circulation mode. Thereby air heated by the heating element 8 in the conduit 7 for the supply air is applied by means of the fan 14 to wet textiles contained in the rotating drum 4. In the drum 4 the heated air is charged with moisture. The air charged with moisture arrives by means of the conduit 9 for the exhausted air at the heat exchanger 10 which is cooled with the fan 15. Water condenses in the heat exchanger 10 and is collected in the sump 11. The pump 12 pumps the water of the sump 11 into the condensate collector 13. Now the air is again heated and conducted by means of the fan 14 into the drum 4. This air circulation process continues until the textiles in the drum 4 are dried in an adequate manner. The run of the chosen program for drying textiles is controlled by the control 40 of the home dryer 1 which is particularly connected to the motor 5, the heating element 8, the motor 16 and the pump 12 what is not explicitly shown in FIG 2.
  • In another operation mode of the home dryer 1 textiles contained in the drum 4 can be treated with hot water steam. The home dryer 1 comprises therefore a steam unit. The steam unit comprises a water tank 20, a pump 21, a steam generator 22 and a injector 23 for the steam connected to the steam generator 22 by a conduit 24. As described above the operator can choose a program for treating textiles with steam with the turning knob 32. During the run of such a program water contained in the water tank 20 is pumped by the pump 21 into the steam generator 22 and there heated. The steam generated in the steam generator 22 arrives by means of the conduit 24 and the injector 23 at the drum 4. The hot water steam is then applied to the textiles contained in the drum 4, which thereby rotates around the axis A. The hot water steam has a temperature of 100°C and more. This process particularly the run of the respective program is again controlled by the control 40.
  • Especially during the run of a program for treating textiles with hot steam the danger exists that an operator is hurt by the hot steam when an active program is interrupted. Normally an interruption of a run of program for treating textiles with steam is caused either by opening the door 3 for loading and un-loading the drum 4 with textiles or by switching of a switching equipment of the home dryer 1. But an interruption of a run of a program for treating textiles with steam can also occur in consequence of a failure of the home dryer 1. By the way this listing is not concluding.
  • For detecting the opening of the door 3 for loading and un-loading the drum 4 with textiles as soon as possible a mechanism 17 for opening and closing the door 3 is equipped with additional sensing means 18. The sensing means 18 are e. g. a light barrier or any other appropriate sensor for registering at once the opening of the door 3 with the mechanism 17. The sensing means 18 are connected to the control 40 (not shown in the drawings). Therefore the control 40 can at once register when the door 3 is opened.
  • As mentioned above the run of a program for treating textiles with steam can also be interrupted by the activation of switching means. Switching means for such an interruption are in the case of the on hand embodiment a stop-button 33 and/or a start/rest-button 34 of the operating panel 30 of the home dryer 1. The switching of any of these buttons is registered by the control 40.
  • In any case of interruption of a run of a program for treating textiles with steam, especially in the aforementioned cases, it is reasonable to take at least one action for protection of the operator. It is namely possible that the operator is not aware of the hot steam inside the drum 4 when the interruption occurs.
  • When the control 40 registers an interruption of a run of a program for treating textiles with steam is it by means of the sensing means 18 or by getting a stop signal or rest signal based on the activation of the stop-button 33 or of the start/rest-button 34 the control 40 runs in a kind of emergency mode and releases at once at least one warning signal. Preferably an acoustic and an optical warning signal are released or generated by the control 40 to direct the operator's attention to the hot steam inside the drum 4.
  • The acoustic warning signal is released e.g. by means of a buzzer or a speaker 35 of the operating panel 30 to the operator. The warning signal can be e.g. a beep or a spoken warning like "attention- hot steam".
  • The optical warning signal is released by means of an optical display preferably arranged in the front of the home dryer 1. The optical display can be e.g. a lamp, particularly a red lamp 36 or a LED-display or the LCD-display 31. The optical warning signal can thus be only a red warning light or in case of the LCD-display 31 red blinking words like "attention- hot steam".
  • Additionally to the release of the warning signals the control 40 stops after registering an interruption of a run of a program for treating textiles with steam the further supply of hot steam of the steam unit to the drum 4. The control 40 especially stops the operation of the pump 21 of the steam unit and the operation of the heating of the heat generator 22 of the steam unit.
  • The supply of steam to the drum 4 can thereby be stopped by closing the conduit 24 by a magnetic valve 25 which is attached to the conduit 24 and controlled by the control 40.
  • A further possibility to stop the supply of steam to the drum 4 containing the textiles can be the reversion of the flux of the steam through the steam unit. By a reversion of the flux of the steam through the steam unit thus the steam generated by the steam generator 22 do not flow through the conduit 24 and the injector 23 in direction to the drum 4 but flows in the opposite direction. The pump 21 of the steam unit which normally pumps water out of a water tank 20 into the steam generator 22 is thereby preferably operated in a reversed mode. In the reversed mode the pump 21 is operated in an opposite direction and pumps the steam already generated and still present in the steam generator 22 into the water tank 20. The pump 21 is thereby controlled by the control 40.
  • Another action to protect an operator is to deplete the steam unit of the home dryer 1 of the steam, when an interruption of a run of a program for treating textiles with steam occurs. This can be achieved by a magnetic valve 26 attached to the steam unit. E.g. the magnetic valve 26 is attached to a conduit connecting the pump 21 und the steam generator 22. The opening and closing of the magnetic valve 26 is controlled by the control 40. when an interruption of a run of a program for treating textiles with steam occurs, the magnetic valve 26 is opened in direction to a conduit 27 which is attached to the magnetic valve 26 and the steam is conducted by means of the conduit 27 in a part or in parts of the home dryer 1 to which the operator has as a rule no contact or no access.
  • When the conduit 27 is connected to the magnetic valve 25 the steam unit can also be depleted of the steam by means of the magnetic valve 25 and the conduit 27. In this case the magnetic valve 26 is not necessary.
  • Another action taken by the control 40 in case of an interruption of a run of a program for treating textiles is to conduct as fast as possible the hot steam contained in the drum 4 out of the drum 4. This can be done by a separate conduit connected to the drum 4 and equipped with a controllable valve. But preferably the conduit 7 for the supply air and/or the conduit 9 for the exhausted air are used for conducting the hot steam out of the drum 4. In case of the on hand embodiment the conduit 7 for the supply air is used because of the fan 14 inside the conduit 7. So the control 40 can activate the motor 16 in such a way that the hot steam is conducted out of the drum 4 by means of the fan 14 which is operated in the reverse direction in comparison to the drying mode (see arrow in FIG 2).
  • In case of an interruption of a run of a program for treating textiles with steam by switching one of the buttons 33 or 34 the control 40 blocks the door 3 with a not explicitly shown closing device of the mechanism 17. The door 3 can thereby not be opened until there is no more danger for an injury for the operator. Preferably the door 3 is blocked by the control 40 for a certain period of time, e.g. 1 minute, and/or until the temperature and/or the atmospheric moisture in the drum 4 has reached a certain value. The value of the temperature can be registered with a separate temperature sensor 19 connected to the control 40 or in a respectively way with a not shown temperature sensor of the steam generator 22 whereby based on the temperature of the steam generator 22 and a known cool down behaviour of the steam in the drum 4 the control 40 computes the temperature in the drum 4.
    The value of the atmospheric moisture can be registered with a separate sensor 28 connected to the control 40 or with a already existing sensor of the home dryer 1.
  • The invention was afore described in connection with a home dryer of the condensation type. But the invention is not limited to home dryer of the condensation type. The invention is also applicably in home dryers using a wet exhausted air process as illustrated in FIG 3. Components shown in FIG 3 which are in type and function identically or comparably with components shown in FIG 2 have the same reference numerals.
  • In case of the embodiment of FIG 3 heated air is conducted in the drum 4 by means of the conduit 7 for supply air, the heating element 8 and the fan 14 for drying wet textiles contained in the drum 4. The air charged with moisture is conducted from the drum 4 to the outside of the home dryer.
  • The home dryer of FIG 3 can like the home dryer of FIG 2 be operated with at least one program for treating textiles in the drum 4 with hot steam. For protection of an operator in case of an interruption of a program for treating textiles with steam the same actions can be taken as described above. Acoustic and optical warning signals can be released in the same way. The supply of steam to the drum 4 can be stopped by the control 40. The steam unit can be depleted of steam. The steam contained in the drum 4 can be conducted out of the drum by means of the conduit 7 and the fan 14 whereby the fan can be operated in both turning direction. Also the door 3 can be blocked for a certain period of time and /or until the temperature in the drum 4 has reached a certain value.
  • As mentioned before the invention is also applicable to washing machines comprising a steam unit and an operating mode for treating textiles with hot steam.
  • As described above a lot of actions can be taken in case of an interruption of a run of a program for treating textiles with steam for the protection of an operator. Thereby it is not necessary to take all the described actions. It can be sufficient to take only one action or any adapted combination of the described actions that the operator is not hurt by hot steam.
    • Reference Numerals
    • 1
    home dryer
    2
    housing
    3
    door
    4
    drum
    5
    motor
    6
    belt
    7
    conduit for supply air
    8
    heating element
    9
    conduit for exhausted air
    10
    heat exchanger
    11
    sump
    12
    pump
    13
    condensate collector
    14
    fan
    15
    fan
    16
    motor
    17
    mechanism
    18
    sensing means
    19
    temperature sensor
    20
    water tank
    21
    pump
    22
    steam generator
    23
    injector
    24
    conduit
    25
    magnetic valve
    26
    magnetic valve
    27
    conduit
    28
    sensor
    30
    control panel
    31
    display
    32
    turning knob
    33
    stop-button
    34
    start/rest-button
    35
    speaker
    36
    lamp
    40
    control
    41
    memory
    A
    axis

Claims (21)

  1. Method for operating a domestic appliance, especially a home dryer (1) or a washing machine, which domestic appliance (1) comprises a steam unit and a room (4) for treating textiles with steam generated by the steam unit, wherein at least one action for protection of an operator of the domestic appliance (1) is taken when an interruption of an active program for treating textiles with steam occurs so that the operator is not hurt by the steam generated in the domestic appliance (1), characterized in that the action comprises
    - releasing at least one warning signal in order to call the operator's attention to the hot steam inside the room (4) for treating textiles or
    - conducting the steam contained in the room (4) for treating textiles out of the room (4).
  2. Method according to claim 1 or 2, wherein
    the action is taken, when a door (3) for loading and un-loading a room (4) of the domestic appliance (1) with textiles is opened during the run of the program for treating textiles with steam.
  3. Method according to claim 1 or 2, wherein
    the action is taken, when the program for treating textiles with steam is interrupted by activation of a switching equipment (33, 34) of the domestic appliance (1).
  4. Method according to claim 3, wherein
    the switching equipment comprises a stop-button (33) or a start/rest-button (34).
  5. Method according to claim 1, wherein
    the action is taken, when the program for treating textiles with steam is interrupted by a failure of the domestic appliance (1).
  6. Method according to claim 1, wherein
    the warning signal is an acoustic and/or an optical warning signal.
  7. Method according to claim 6, wherein
    the optical warning signal is displayed with an optical display, which comprises a lamp (36) or a LED-display or an operating panel (30) of the domestic appliance (1), which operating panel (30) comprises particularly a LCD-display (31).
  8. Method according to claim 1, wherein
    a fan (14) is used for conducting the steam out of the room (4) containing the textiles.
  9. Method according to claim 1 or 8, wherein
    the steam contained in the room (4) for treating textiles is conducted out of the room (4) by means of a conduit (7) for supplying air to the room (4) and/or by means of a conduit (9) for exhausting air out of the room (4) which conduit/conduits is/are normally used in an operating mode for drying textiles.
  10. Method for operating a domestic appliance, especially a home dryer (1) or a washing machine, which domestic appliance (1) comprises a steam unit and a room (4) for treating textiles with steam generated by the steam unit, wherein at least one action for protection of an operator of the domestic appliance (1) is taken when an interruption of an active program for treating textiles with steam occurs so that the operator is not hurt by the steam generated in the domestic appliance (1), wherein the action comprises at least partially stopping the supply of steam to the room for treating textiles, characterized in that stopping the supply of steam to the room for treating textiles comprises
    - closing a conduit (24) for supplying the room (4) for treating textiles or
    - at least partially depleting the steam unit of steam or
    - reversing the flux of the steam through the steam unit or
    - stopping the activity of a pump (21) adapted to supply water to the steam unit.
  11. Method according to claim 10, wherein
    the action is taken, when a door (3) for loading and un-loading a room (4) of the domestic appliance (1) with textiles is opened during the run of the program for treating textiles with steam.
  12. Method according to claim 10, wherein
    the action is taken, when the program for treating textiles with steam is interrupted by activation of a switching equipment (33, 34) of the domestic appliance (1).
  13. Method according to claim 12, wherein
    the switching equipment comprises a stop-button (33) or a start/rest-button (34).
  14. Method according to claim 10, wherein
    the action is taken, when the program for treating textiles with steam is interrupted by a failure of the domestic appliance (1).
  15. Method according to at least one of the claims 10 to 14, wherein
    the conduit (24) is closed by a valve (25).
  16. Method according to at least one of the claims 10 to 14, wherein
    the steam unit is at least partially depleted of steam by a valve (26).
  17. Method according to at least one of the claims 10 to 14, wherein
    the steam unit comprises a steam generator (22) and a pump (21) for pumping water into the steam generator (22), wherein the pump (21) of the steam unit is operated in a reversed mode.
  18. Method according to at least one of the claims 10, 12 to 17, wherein
    the door (3) for loading and un-loading the domestic appliance (1) with textiles can not be opened after an interruption of an active program for treating textiles with steam until there is no more danger for an injury of an operator.
  19. Method according to claim 18, wherein
    the door (3) for loading and un-loading the domestic appliance (1) with textiles can not be opened for a certain period of time and/or until the temperature and/or the atmospheric moisture in the room (4) of the domestic appliance (1) containing the textiles has/have a certain value.
  20. Method according to at least one of the claims 1 to 19, wherein
    the domestic appliance is a dryer of the condensation type or a dryer of the exhaust air type.
  21. Domestic appliance, especially home dryer (1) or washing machine, comprising
    a control (40) and a memory (41) storing at least one program for treating textiles with steam, wherein
    the control (40) is adjusted to execute a method of at least one of the claims 1 to 20.
EP06011421.2A 2006-06-01 2006-06-01 Method for operating a domestic appliance, especially a home dryer or a washing machine, and domestic appliance Active EP1862581B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP06011421.2A EP1862581B2 (en) 2006-06-01 2006-06-01 Method for operating a domestic appliance, especially a home dryer or a washing machine, and domestic appliance
PCT/EP2007/004857 WO2007137861A1 (en) 2006-06-01 2007-06-01 Method for operating a domestic appliance, especially a home dryer or a washing machine, and domestic appliance
BRPI0711852-0A BRPI0711852A2 (en) 2006-06-01 2007-06-01 method for operating a home appliance especially a dryer or a washing machine, and home appliance
KR1020087032121A KR20090017663A (en) 2006-06-01 2007-06-01 Method for operating a domestic appliance, especially a home dryer or a washing machine, and domestic appliance
US12/302,657 US20090235465A1 (en) 2006-06-01 2007-06-01 Method for operating a domestic appliance, especially a home dryer or a washing machine, and domestic appliance
RU2008152047/12A RU2450093C2 (en) 2006-06-01 2007-06-01 Method for control of household electric appliance, in particular, drier or washing machine, and household electric appliance
MX2008015307A MX2008015307A (en) 2006-06-01 2007-06-01 Method for operating a domestic appliance, especially a home dryer or a washing machine, and domestic appliance.
CN2007800200241A CN101454498B (en) 2006-06-01 2007-06-01 Method for operating a domestic appliance, especially a home dryer or a washing machine, and domestic appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06011421.2A EP1862581B2 (en) 2006-06-01 2006-06-01 Method for operating a domestic appliance, especially a home dryer or a washing machine, and domestic appliance

Publications (3)

Publication Number Publication Date
EP1862581A1 EP1862581A1 (en) 2007-12-05
EP1862581B1 true EP1862581B1 (en) 2012-09-12
EP1862581B2 EP1862581B2 (en) 2020-09-09

Family

ID=37116050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06011421.2A Active EP1862581B2 (en) 2006-06-01 2006-06-01 Method for operating a domestic appliance, especially a home dryer or a washing machine, and domestic appliance

Country Status (8)

Country Link
US (1) US20090235465A1 (en)
EP (1) EP1862581B2 (en)
KR (1) KR20090017663A (en)
CN (1) CN101454498B (en)
BR (1) BRPI0711852A2 (en)
MX (1) MX2008015307A (en)
RU (1) RU2450093C2 (en)
WO (1) WO2007137861A1 (en)

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Also Published As

Publication number Publication date
CN101454498B (en) 2013-03-20
KR20090017663A (en) 2009-02-18
EP1862581B2 (en) 2020-09-09
RU2450093C2 (en) 2012-05-10
BRPI0711852A2 (en) 2011-12-13
RU2008152047A (en) 2010-07-20
CN101454498A (en) 2009-06-10
MX2008015307A (en) 2008-12-12
EP1862581A1 (en) 2007-12-05
US20090235465A1 (en) 2009-09-24
WO2007137861A1 (en) 2007-12-06

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