EP1734170B1 - Machine à laver et son procédé de commande - Google Patents

Machine à laver et son procédé de commande Download PDF

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Publication number
EP1734170B1
EP1734170B1 EP05025456A EP05025456A EP1734170B1 EP 1734170 B1 EP1734170 B1 EP 1734170B1 EP 05025456 A EP05025456 A EP 05025456A EP 05025456 A EP05025456 A EP 05025456A EP 1734170 B1 EP1734170 B1 EP 1734170B1
Authority
EP
European Patent Office
Prior art keywords
water
condensed water
level
steam
tank
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 - Fee Related
Application number
EP05025456A
Other languages
German (de)
English (en)
Other versions
EP1734170A1 (fr
Inventor
Sang Yeon Pyo
Hyong Gyoon Kim
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.)
Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Filing date
Publication date
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Publication of EP1734170A1 publication Critical patent/EP1734170A1/fr
Application granted granted Critical
Publication of EP1734170B1 publication Critical patent/EP1734170B1/fr
Expired - Fee Related 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/40—Steam generating 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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating 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
    • 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
    • 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
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2103/60—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to auxiliary conditioning or finishing agents, e.g. filling level of perfume tanks
    • D06F2103/62—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to auxiliary conditioning or finishing agents, e.g. filling level of perfume tanks related to systems for water or steam used for conditioning or finishing
    • 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
    • D06F2105/02—Water supply
    • 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
    • D06F2105/08—Draining of washing liquids
    • 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
    • D06F2105/36—Condensing arrangements, e.g. control of water injection therefor
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/52—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/65—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of conditioning or finishing phases, e.g. for smoothing or removing creases
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements

Definitions

  • the present invention relates to a washing machine and a control method thereof, and, more particularly, to a washing machine with a laundry drying function and a steam supplying function and a control method thereof.
  • Korean Unexamined Patent Publication No. 2005-43771 discloses a washing machine having a drying unit that dries laundry.
  • the drying unit includes: a drying duct to circulate air in a water tub; a blowing fan to blow air in the drying duct; a heater to heat air supplied to the water tub through the drying duct; and a cooler to cool air passing through the drying duct such that moisture contained in the air is condensed to dehumidify air.
  • Hot air is supplied into the water tub by the operation of the blowing fan and the heater, and high-humidity air is circulated in a closed circuit formed by the water tub and the drying duct.
  • the cooler dehumidifies the air such that laundry is dried.
  • the condensed water generated by the dehumidification of the cooler is usually drained out of the washing machine through a water draining pipe.
  • Korean Unexamined Patent Publication No. 2004-88884 discloses a washing machine having a steam generating unit to supply high-temperature steam into a drum such that laundry is more efficiently washed and sterilized.
  • the steam generating unit includes: a pressure container to receive water; a heater to heat the water received in the pressure container such that steam is generated; and a steam channel to supply steam generated in the pressure container into the drum.
  • the pressure container is connected a water supply channel, through which water is supplied from an external water supply source to the pressure container.
  • Patent document US 5 827 329 A discloses an apparatus and method for the industrial cleaning of fabrics and clothes in a liquid medium, especially solvents, which can be toxic. It is disclosed that steam is used during the drying process to clear the solvent out of the fabrics. The steam is then condensed and collected to be fed again to the steam generator to avoid rejection of the potentially harmful solvent to the environment.
  • the present invention provides a washing machine according to claim 1, a subassembly of a washing machine according to claim 3, and a control method of a washing machine according to claim 4.
  • FIG. 1 is a view showing the structure of a drum type washing machine according to an embodiment of the present invention.
  • the drum type washing machine includes: a drum type washing tub 11 mounted in a machine body 10 to receive wash water; and a rotary drum 12 rotatably mounted in the washing tub 11.
  • the rotary drum 12 is rotatably connected to the rear center part of the washing tub 11 via a rotary shaft 13, which is attached to the rear center part of the rotary drum 12.
  • a drive motor 14 At the outer rear part of the washing tub 11 is mounted a drive motor 14 to rotate the rotary drum 12.
  • the rotary drum 12 has a plurality of through-holes 12a formed at the circumference thereof to allow wash water to be introduced into the rotary drum therethrough, and a plurality of lifters 12b mounted at the inner surface thereof to lift laundry when the rotary drum 12 is rotated.
  • an inlet/outlet hole 15 is opened or closed by a door 16 mounted to the front surface of the machine body 10.
  • the drum type washing machine further includes: a water supplying unit 20 to supply wash water into the washing tub 11; a detergent supplying unit 17 to supply detergent into the washing tub 11; a water draining unit 18 to drain water out of the washing tub 11; a drying unit 30 to dry laundry in the rotary drum 12; and a steam generating unit 50 to supply steam into the washing tub 11.
  • the water supplying unit 20 includes: a first water supplying valve 21 to control water supply from an external water supply source to the detergent supplying unit 17; a first water supplying pipe 22 connected between the first water supplying valve 21 and the detergent supplying unit 17; and a second water supplying pipe 23 connected between the detergent supplying unit 17 and the washing tub 11.
  • Water supplied through the first water supplying unit 22 is introduced into the washing tub 11 through the detergent supplying unit 17.
  • detergent in the detergent supplying unit 17 is supplied into the washing tub 17 together with the water supplied through the first water supplying unit 22.
  • the water supplying unit 20 further includes: a second water supplying valve 24 and a third water supplying pipe 25, which are used to supply water to a condensed water tank 60, which will be described below.
  • the water draining unit 18 includes: a water draining pipe 18a connected to the bottom part of the washing tub 11; and a first water draining valve 18b to open and close the water draining pipe 18a. After a washing operation is completed or when a rinsing or spin-drying operation is performed, the first water draining valve 18b is opened such that water is drained out of the washing tub 11.
  • the drying unit 30 blows heated air into the rotary drum 12 to dry laundry.
  • the drying unit 30 includes: first and second ducts 31 and 32 disposed at the rear of the washing tub 11; third and fourth ducts 33 and 34 disposed above the washing tub 11; a condensation-purpose heat exchanger 35 mounted in the second duct 32; a blower 36 mounted in the connection part between the third duct 33 and the fourth duct 34; and a first heater 37 mounted in the fourth duct 34.
  • the inlet of the first duct 31 is connected to the lower part of the rear surface of the washing tub 11, the outlet of the fourth duct 34 is connected to the inlet side of the washing tub 11.
  • the first to fourth ducts 31 to 34 are connected to one another to from a continuous air circulating channel such that air is circulated in a closed circuit formed by the washing tub 11 and the first to fourth ducts 31 to 34.
  • the blower 36 includes: a blowing fan 36a to suction air guided through the third duct 33 and blow the suctioned air to the fourth duct 34; and a blowing motor 36b mounted at the outside of the fourth duct 34 to rotate the blowing fan 36a.
  • the first heater 37 serves to heat air supplied into the washing tub 11 through the fourth duct 34 such that the heater air can dry the laundry in the washing tub 11.
  • the condensation-purpose heat exchanger 35 is a cylindrical sensible heat exchanger having first air channels 35a, through which air from the washing tub 11 passes, and second air channels 35b, through which outside air passes.
  • the first air channels 35a intersect the second air channels 35b.
  • the second duct 32 in which the heat exchanger 35 is mounted, includes: a first lower inlet 32a connected to the first duct 31; a first upper outlet 32b connected to the third duct 33; a second inlet 32c, through which outside air is introduced; and a second outlet 32d, through which the outside air is discharged.
  • the direction in which the first inlet and outlet 32a and 32b are arranged intersects the direction in which the second inlet and outlet 32c and 32d are arranged.
  • an outside air blowing fan 38 (see FIG. 1 ) to blow the outside air.
  • the second inlet and outlet 32c and 32d of the second duct 32 communicate with the outside of the machine body 10 through additional ducts to accomplish circulation of outside air.
  • High-humidity air is introduced into the second duct 32 through the first inlet 32a from the washing tub 11, passes through the first air channels 35a of the heat exchanger 35, and flows to the third duct 33 through the first outlet 32b.
  • Cold outside air is introduced into the second duct 32 through the second inlet 32c, passes through the second air channels 35b of the heat exchanger 35 such that heat exchange is performed, and is discharged out of the second duct 32 through the second outlet 32d.
  • Moisture contained in the air passing through the first air channels 35a of the heat exchanger 35 is condensed to dehumidify the air.
  • the above-described air circulation is repeated to dry the laundry.
  • condensed water generated while drying the laundry is collected and supplied to the steam generating unit 50 to generate steam.
  • the condensed water has nearly the same purity as distilled water. Consequently, formation of scale in the steam generating unit 50 is minimized when steam is generated using the condensed water.
  • the condensed water tank 60 to receive a predetermined amount of water is disposed below the second duct 32.
  • the condensed water tank 60 is connected to the lower end of second duct 32 through a condensed water guide pipe 39. Consequently, water condensed in the heat exchanger 35 flows down the condensed water guide pipe 39, and is then collected in the condensed water tank 60.
  • the steam generating unit 50 includes: a metallic unit body 52 having a channel 51 defined therein; and a second heater 53 embedded in the unit body 52 to heat water passing through the channel 51 of the unit body 52 such that steam is generated.
  • a steam-purpose water supplying unit 40 to supply water from the condensed water tank 60 to the steam generating unit 50 and a steam supplying pipe 44 to supply steam generated in the steam generating unit 50 to the washing tub 11.
  • the steam-purpose water supplying unit 40 includes: a steam-purpose water supplying pipe 41 connected between the condensed water tank 60 and the steam generating unit 50; a water supplying pump 42 mounted on the water supplying pipe 41; and a third water supplying valve 43 to open and close the water supplying pipe 41.
  • a water level sensor 61 to sense predetermined highest level H and predetermined lowest level L in the condensed water tank 60.
  • a water draining pipe 62 is connected to the condensed water tank 60 to drain condensed water when the water level of the condensed water tank 60 is higher than the predetermined highest level H.
  • a second water draining valve 63 On the water draining pipe 62 is mounted a second water draining valve 63 to open and close the water draining pipe 62.
  • a third water supplying pipe 25 which is connected to the water supplying unit 20, such that water is supplied to the condensed water tank 60 when the water level of the condensed water tank 60 is below the predetermined lowest level L.
  • the third water supplying pipe 25 is opened and closed by the second water supplying valve 24.
  • FIG. 3 is a control block diagram of the method to control the operation of the washing machine according to an embodiment of the present invention.
  • the washing machine further includes a signal input unit 71, a temperature sensor 73, a drying sensor 72, a water level sensor 61, and a control unit 70 to control the operation of the washing machine.
  • the signal input unit 71 allows a user to input various operation information, such as washing course, water level, washing temperature, spin-drying time, drying, steam supply, etc., to the control unit 70.
  • the temperature sensor 73 senses temperature in the washing tub 11 and transmits the sensed temperature to the control unit 70.
  • the drying sensor 72 senses the drying degree of laundry.
  • the water level sensor 61 senses water level of the condensed water tank 60 and transmits the sensed water level to the control unit 70.
  • the control unit 70 controls the operations of the motor 14, the first and second water supplying valves 21 and 24, the first water draining valve 18b, the blower 36, the outside air blowing fan 38, the first heater 37, the second heater 53, the water supplying pump 42, the third water supplying valve 43, and the second water draining valve 63 based on the inputted operation information and the second information.
  • FIG. 4 is a flow chart illustrating a process of controlling a drying operation of the washing machine according an embodiment of the present invention.
  • the control unit 70 controls the motor 14 to be driven based on a drying signal inputted through the signal input unit 71 to rotate the rotary drum 11.
  • the control unit 70 controls the first heater 37 and the blower 36 of the drying unit 30 and the outside air blowing fan 38 to be operated to dry laundry (81).
  • hot air is circulated in a closed circuit formed by the washing tub 11 and the first to fourth ducts 31, 32, 33, and 34 to dry the laundry.
  • water is condensed in the heat exchanger 35, and the condensed water flows down the condensed water guide pipe 39, and is then collected in the condensed water tank 60.
  • the water level of the condensed water tank 60 is sensed by the water level sensor 61 (82), the water level sensor determines whether the water level of the condensed water tank 60 is higher than the predetermined highest level H (83). If the water level of the condensed water tank 60 is higher than the predetermined highest level H, the second water draining valve 63 is opened to drain the condensed water out of the condensed water tank 60 (84). If the water level sensor determines that the water level of the condensed water tank 60 is lower than the predetermined highest level H, the second water draining valve 63 is closed (85).
  • the second water draining valve 63 is opened to drain the condensed water out of the condensed water tank when the water level of the condensed water tank 60 is higher than the predetermined highest level H while the laundry is dried, and the second water draining valve 63 is closed to collect the condensed water in the condensed water tank 60 when the water level of the condensed water tank 60 is lower than the predetermined highest level H while the laundry is dried.
  • the degree of dryness of the laundry is sensed by the drying sensor 72 (86), and it is determined whether dryness is sufficient (87). If the drying sensor 72 determines that the dryness is sufficient, the drying operation is finished. When it is determined that the dryness of the laundry is not sufficient, the above drying operation controlling process is repeated.
  • the steam supply of the washing tub 11 may be selectively used to heat the wash water and the laundry before the washing operation is performed or during the washing operation or to reduce wrinkles of the laundry after the drying operation is completed.
  • FIG 5 is a flow chart illustrating a process of controlling a steam supplying operation of the washing machine according to an embodiment of the present invention.
  • the control unit 70 controls the water level sensor 61 of the condensed water tank 60 to sense the level of the condensed water collected while the laundry is being dried based on a steam supplying signal inputted through the signal input unit 71 (91), and determines whether the water level of the condensed water tank 60 is higher than the predetermined lowest level L (92).
  • the predetermined lowest level L is not a level that indicates that there is no water in the condensed water tank 60.
  • the predetermined lowest level L is a level indicating that there is a minimum amount of water sufficient to generate steam in the condensed water tank 60.
  • the second water supplying valve 24 is closed such that water is not supplied to the condensed water tank 60 (93).
  • the control unit 70 determines that the water level of the condensed water tank 60 is lower than the predetermined lowest level L, the second water supplying valve 24 is opened such that water is supplied from the external water supply source to the condensed water tank 60 (94).
  • the second heater 53 of the steam generating unit 50 When the water in the condensed water tank 60 exceeds the predetermined lowest level L, the second heater 53 of the steam generating unit 50 operates (95). Also, the water supplying pump 42 of the steam-purpose water supplying unit 40 operates and the third water supplying valve 43 is opened such that the condensed water is supplied from the condensed water tank 60 to the steam generating unit 50 to generate steam (96). As described above, only the condensed water, which has nearly the same purity as distilled water, is supplied to the steam generating unit 50 when the water in the condensed water tank 60 exceeds the predetermined lowest level L. Consequently, the formation of scale in the steam generating unit 50 is minimized.
  • the second water supplying valve 24 is opened such that external water is supplied into the condensed water tank 60, and thus, the condensed water tank 60 supplies the water to the steam generating unit 50.
  • the steam generating unit 50 supplies steam into the washing tub 11 through the steam supplying pipe 44. While the steam is supplied, the control unit 70 controls the temperature sensor 73 of the washing tub 11 to sense the temperature of the washing tub 11 (97), and determines whether the interior of the washing tub 11 is sufficiently heated to a temperature predetermined by a user or when steam supplying time predetermined by the user elapses (98). This determination depends on the steam supplying condition selectively inputted by the user (for example, the temperature of the washing tub or steam supplying time).
  • the steam supply is stopped. In the event that the temperature of the washing tub 11 does not exceed the predetermined level, or the predetermined steam supplying time does not elapse, the above steam supplying operation controlling process is repeated.
  • the condensed water generated while drying laundry is supplied to the steam generating unit to generate steam, whereby the formation of scale in the steam generating unit is minimized.
  • the external water supply source supplies water into the condensed water tank when the condensed water is not sufficient in the condensed water tank, whereby water is easily supplemented in the condensed water tank.
  • the condensed water is reused in a steam supplying operation that can heat the water, steam the wet laundry and steam dry wrinkled laundry. It is also possible to use and reuse the condensed water, with almost the purity of distilled water, as a supply of water, heated or unheated, to the washing operation, such as during washing or rinsing, using the steam supply system and controlling heat supplied to the water by the steam unit.

Landscapes

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

Claims (7)

  1. Sous-ensemble pour une machine à laver, comportant :
    un réservoir d'eau condensée (60) destiné à collecter de l'eau condensée pour le fonctionnement de la machine à laver ;
    caractérisé par
    un capteur (61) de niveau d'eau destiné à capter un niveau d'eau du réservoir (60) ;
    une unité (20) d'alimentation en eau destinée à alimenter en eau extérieure le réservoir (60) lorsque le capteur (61) de niveau d'eau détecte que le niveau de l'eau du réservoir (60) est en dessous d'un niveau prédéterminé le plus bas ; et
    une unité (62) d'évacuation d'eau destinée à évacuer l'eau excédentaire à l'extérieur du réservoir (60) lorsque le capteur (61) de niveau d'eau détecte que le niveau de l'eau du réservoir (60) est au-dessus d'un niveau d'eau prédéterminé le plus haut.
  2. Machine à laver, comportant :
    une unité de séchage (30) ayant un échangeur de chaleur (35) pour déshumidifier de l'air dans une cuve (11) de lavage ;
    une unité (50) de génération de vapeur d'eau destinée à fournir de la vapeur d'eau à la cuve (11) de lavage ;
    un sous-ensemble selon la revendication 1, dans lequel ledit réservoir (60) d'eau condensée collecte de l'eau condensée provenant de l'échangeur de chaleur (35) ; et
    une unité (40) d'alimentation en eau à des fins de vaporisation destinée à amener l'eau du réservoir (60) d'eau condensée à l'unité (50) de génération de vapeur d'eau,
    caractérisée par
    un capteur (61) de niveau d'eau destiné à capter le niveau de l'eau du réservoir (60) d'eau condensée ;
    une unité (20) d'alimentation en eau destinée à alimenter en eau extérieure le réservoir (60) d'eau condensée lorsque le niveau de l'eau du réservoir (60) d'eau condensée est en dessous d'un niveau d'eau prédéterminé le plus bas ; et
    une unité (62) d'évacuation d'eau destinée à évacuer l'eau à l'extérieur du réservoir (60) d'eau condensée lorsque le niveau de l'eau du réservoir (60) d'eau condensée est au-dessus d'un niveau d'eau prédéterminé le plus haut.
  3. Machine à laver selon la revendication 2, dans laquelle l'unité (40) d'alimentation en eau à des fins de vaporisation comporte :
    un conduit (41) d'alimentation en eau à des fins de vaporisation raccordé entre le réservoir (60) d'eau condensée et l'unité (50) de génération de vapeur d'eau ;
    une pompe (42) d'alimentation en eau montée sur le conduit (41) d'alimentation en eau à des fins de vaporisation ; et
    une vanne (43) d'alimentation en eau destinée à ouvrir et fermer le conduit (41) d'alimentation en eau à des fins de vaporisation.
  4. Procédé de commande d'une machine à laver comportant : une unité de séchage (30) ayant un échangeur de chaleur (35) destiné à déshumidifier l'air dans une cuve de lavage (11) ; une unité (50) de génération de vapeur d'eau destinée à alimenter en vapeur d'eau la cuve (11) de lavage ; et un réservoir (60) d'eau condensée destiné à collecter de l'eau condensée provenant de l'échangeur de chaleur (35), lequel procédé de commande comprend :
    le fait de capter le niveau de l'eau du réservoir (60) d'eau condensée lorsqu'une opération de séchage a lieu, dans lequel
    un conduit (62) d'évacuation d'eau du réservoir (60) d'eau condensée est ouvert lorsque le niveau de l'eau du réservoir (60) d'eau condensée est plus élevé qu'un niveau prédéterminé le plus haut, afin d'évacuer de l'eau à l'extérieur du réservoir (60) d'eau condensée, et
    le fait de capter le niveau de l'eau du réservoir (60) d'eau condensée lorsque de la vapeur d'eau est amenée à la cuve (11) de lavage, dans lequel
    l'unité (50) de génération de vapeur d'eau est mise en oeuvre et amène de l'eau du réservoir (60) d'eau condensée à l'unité (50) de génération de vapeur d'eau en passant par une unité (40) d'alimentation en eau à des fins de vaporisation lorsque le niveau de l'eau du réservoir (60) d'eau condensée est plus élevé qu'un niveau prédéterminé le plus bas.
  5. Procédé de commande selon la revendication 4, comprenant en outre :
    la fermeture du conduit (62) d'évacuation d'eau du réservoir (60) d'eau condensée lorsque le niveau de l'eau du réservoir (60) d'eau condensée est inférieur au niveau prédéterminé le plus haut.
  6. Procédé de commande selon la revendication 4, comprenant en outre :
    l'alimentation en eau du réservoir (60) d'eau condensée depuis une source extérieure (20) d'alimentation en eau lorsque le niveau de l'eau du réservoir (60) d'eau condensée est inférieur au niveau prédéterminé le plus bas.
  7. Procédé de commande selon la revendication 6, comprenant en outre :
    l'arrêt de l'alimentation en eau du réservoir (60) d'eau condensée depuis une source extérieure (20) d'alimentation en eau lorsque le niveau de l'eau du réservoir (60) d'eau condensée est plus élevé que le niveau prédéterminé le plus bas.
EP05025456A 2005-06-13 2005-11-22 Machine à laver et son procédé de commande Expired - Fee Related EP1734170B1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2499090C2 (ru) * 2008-07-22 2013-11-20 Хэппи Ко., Лтд. Устройство для стирки

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US20060277690A1 (en) 2006-12-14
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KR20060129849A (ko) 2006-12-18
DE602005012372D1 (de) 2009-03-05

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