EP2039824B1 - Reinigungsmaschine - Google Patents

Reinigungsmaschine Download PDF

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Publication number
EP2039824B1
EP2039824B1 EP08011437.4A EP08011437A EP2039824B1 EP 2039824 B1 EP2039824 B1 EP 2039824B1 EP 08011437 A EP08011437 A EP 08011437A EP 2039824 B1 EP2039824 B1 EP 2039824B1
Authority
EP
European Patent Office
Prior art keywords
steam
water
drum
steam generator
valve
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
EP08011437.4A
Other languages
English (en)
French (fr)
Other versions
EP2039824A2 (de
EP2039824A3 (de
Inventor
Sang Hun Bae
Chul Jin Choi
Ju Han Yoon
Tae Hee Lee
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP2039824A2 publication Critical patent/EP2039824A2/de
Publication of EP2039824A3 publication Critical patent/EP2039824A3/de
Application granted granted Critical
Publication of EP2039824B1 publication Critical patent/EP2039824B1/de
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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • 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
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/68—Operation mode; Program phase
    • 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

Definitions

  • the disclosure relates to a laundry machine to wash or dry laundry.
  • the laundry machine may be a washing machine, a dryer, a drying and washing machine or the like.
  • the laundry machine includes a steam generator.
  • the disclosure relates more particularly to a laundry machine having a steam generator.
  • pulsator type washing machine and a drum washing machine.
  • drying and washing machine which can perform both washing and drying function.
  • a dryer may be an electric home appliance which generally dries washed laundry, mainly, clothes using high-temperature air.
  • the dryer generally includes a drum which accommodates the laundry therein, a driving device which drives the drum, a heating unit which heats air introduced into the drum, a blower unit to make the heated air to flow into the drum, and the like.
  • Clothes dryers may be categorized based on a method of heating air.
  • a dryer may be categorized by its heating means into electric type dryers and gas type dryers.
  • electric dryer air is heated by using ohmic heating.
  • gas type dryer air is heated by heat generated by gas exhaustion.
  • Dryers may be categorized into condensation type (circulation type) dryers and exhaustion type dryers.
  • condensation type dryer air is heat exchanged with laundry in the drum and the heat exchanged humid air is circulated, not discharged outside. The air is heat exchanged in a condenser and the condensed water is discharged outside.
  • the exhaustion type dryer air is heat exchanged with laundry in the drum and the heat exchanged humid air is exhausted outside directly.
  • dryers may be categorized based on a method of loading laundry into top loading type dryers and front loading type dryers.
  • top loading type dryer laundry is loaded through a top of the dryer.
  • front loading type dryer laundry is loaded through a front of the dryer.
  • water When water is supplied into the steam generator over a required level, water may overflow through a steam line. Particularly, when water is supplied into the steam generator through a faucet and a water supply valve, if the water supply valve is out of order, water can continuously flow into the steam generator, thereby causing overflow. In case of a dryer, overflowing water may be introduced into the drum and wet the laundry. Further, since the dryer generally does not have a drain line for discharging water out of a drum or a tub, differently from the washing machine, the problem becomes worse.
  • water can overflow the steam generator due to an error in the water supply to flow into the tub, thereby causing a problem.
  • WO 2007/086672 A1 discloses a laundry machine comprising a drum, a steam generator, a water supply line, a steam line through which the generated steam is supplied to the drum, and a reverse flow preventing member (check valve).
  • EP 1 469 120 A1 discloses another laundry machine having a steam generator or steam supply unit.
  • a water supply line is connected to an inlet port of a tank of a steam generator via a water supply valve, and a steam supply line through which the generated steam is supplied to the drum is connected to an outlet port of the tank by means of a steam supply valve.
  • the water supply line and the steam supply line are opened, i.e. the water supply valve and the steam supply valve are open.
  • the water supply line and the steam supply line i.e. the corresponding valves are closed.
  • a steam injection procedure is carried out to open the steam supply line, i.e. to open the steam supply valve and thus to inject steam into the wash tub or drum via the steam supply line.
  • the steam supply line i.e. the steam supply valve is opened when the internal temperature of the tank reaches a predetermined steam injection temperature.
  • WO 2007/058477 A1 discloses another laundry machine having a drum, a steam generator, a water supply line, and a steam supply line.
  • An inflow valve is installed between the connection tube (corresponding to the water supply line) and the pressure vessel (of the steam generator) for controlling supply of wash water, and an outflow valve is installed between the spray nozzle and the pressure vessel for controlling outflow of steam.
  • US 2006/0016020 A1 comprises a laundry machine having a drum provided with a steam generator that is connected to a water supply valve as well as to a spray nozzle via a steam supply tube. Further, an on/off valve for turning on/off the steam supply tube is provided on the tube so that steam can be selectively sprayed into the tub and drum of the laundry machine.
  • WO 2006/001612 A1 comprises a laundry machine having a drum provided with a steam supply part for generating high temperature steam to be sprayed into the drum.
  • the steam supply part comprises a steam generator consisting of a water storage tub and a heat generation part that is connected to a water supply valve by means of a water supply pipe.
  • a steam supply pipe is connected to a spraying nozzle via an opening/closing valve so that steam generated in the steam generator can be sprayed into the drum in a controllable manner.
  • EP 1 600 545 A1 discloses another laundry machine having a drum and a steam-generating unit.
  • the steam generating-unit comprises a heating tank and a steam supply unit comprises a steam supply line that is connected to the heating tank via a steam supply valve. Further, the heating tank is connected via a connection pipe and a connection valve with a silver solution-producing unit. The connection valve is provided and operated to control the quantity of silver solution flowing through the connection pipe into the heating tank.
  • the object underlying the present invention is to provide another laundry machine of the initially named kind that prevents water from flowing from the steam generator through the steam line into the drum even if water is oversupplied to the steam due to a mail function of a water supply valve or the like.
  • An embodiment of the present invention comprises a drum in which laundry is put; a steam generator to generate steam; a water supply line connected to the steam generator; a steam line connected to the steam generator; and a valve placed in the steam line, wherein the valve is controlled to block overflowing water from the steam generator.
  • water can be prevented from flowing to the drum through the steam line.
  • the water supply line can be connected to a faucet and a water supply valve. In this case, even though water is over supplied to the steam generator due to a malfunction of the water supply valve or the like, the water does not flow into the drum by the valve installed on the steam line. However, when water is intended to be supplied to the drum through the steam line after passing through the steam generator, the valve installed on the steam line can be controlled according to the conditions.
  • the valve installed on the steam line can be controlled according to a temperature of the steam generator.
  • the temperature of the steam generator can be one of a temperature of a body of the steam generator, a temperature of atmosphere in the steam generator, and a temperature of water in the steam generator.
  • the valve installed on the steam line can be controlled to be kept open.
  • the valve installed on the steam line which maintains a closed state can be controlled to be opened when the temperature of the steam generator reaches 100 °C.
  • the temperature of the steam generator would be lower than the preset temperature. In this case, since the valve installed on the steam line is in a closed state, overflowing water does not flow into the drum through the steam line.
  • valve installed on the steam line can be controlled to be opened after a predetermined period of time after the heater of the steam generator is turned on, instead of being controlled according to a temperature as described above.
  • the valve installed on the steam line can be controlled to be closed at the same time when the water supply valve is closed as water supply into the steam generator is completed. Even though the water supply valve is not closed due to a malfunction, water is not introduced into the drum by being blocked by the valve installed on the steam line.
  • the valve installed on the steam line can be controlled according to an amount of water to be supplied into the steam generator. For example, if the amount of water supplied into the steam generator is equal to or larger than a preset amount, the valve is controlled to be closed.
  • the preset amount can be set to be equal to or larger than an allowable water supply amount of the steam generator. Further, the preset amount can be set to be larger than a set amount by which water is supplied into the steam generator.
  • the laundry machine can further include an instrument to measure an amount of water supplied into the steam generator.
  • the instrument can be any device capable of detecting an amount of water supplied into the steam generator.
  • the instrument can include an impeller installed on the water supply line and a detection unit to detect the number of rotation of the impeller. Accordingly, if the impeller rotates by a preset number or more, the valve installed on the steam line is closed.
  • the instrument can include a water level sensor which senses a water level in the steam generator.
  • the water level sensor senses a maximum allowable water level of the steam generator. If the maximum allowable water level is sensed by the water level sensor, the valve installed on the steam line can be controlled to be closed. In this case, the maximum allowable water level can be determined as a water level over which water is supplied to cause overflow through the steam line.
  • the water level sensor can be configured to sense another preset level in the steam generator.
  • the water level sensor can be configured to sense a first water level, a second water level and the maximum allowable water level. If a water level reaches the second water level, the water supply valve is controlled to be closed.
  • the first water level is provided to prevent the heater installed in the steam generator from being exposed above the surface of the water. For example, if a water level in the steam generator gradually decreases and then reaches the first water level, the heater can be controlled to be turned off in order to prevent from being overheated.
  • valve installed on the steam line can be controlled according to time.
  • the valve can be controlled to be closed within a preset period of time after the water supply valve is closed as water supply into the steam generator is completed and, then, opened after a preset period of time.
  • the water can be prevented from flowing into the drum.
  • the water can be prevented from overflowing the steam generator and flowing into the drum.
  • FIG. 1 illustrates a laundry machine according to an embodiment of the present invention
  • FIG. 2 illustrates a cross-sectional view of the laundry machine shown in FIG. 1 ;
  • FIG. 3 illustrates an enlarged configuration view showing essential portions of the laundry machine shown in FIG. 1 .
  • FIGs. 1 to 3 For convenience, a top-loading, electric, condensation dryer is explained as an example, but the present invention is not limited thereto.
  • a rotatable drum 20, a motor 70 which drives the drum 20 and a belt 68 are installed inside a cabinet 10 forming an external appearance of the dryer.
  • a heater 90 (hereinafter, simply referred to as a "hot air heater") which heats air to produce high-temperature air (hereinafter, referred to as "hot air") and a hot air supply duct 44 which supplies hot air produced in the hot air heater 90 to the drum 20 are installed at specific positions of the cabinet 10.
  • an exhaust duct 80 which discharges humid air that has been heat-exchanged with laundry in the drum 20, and a blower unit 60 which sucks the humid air are installed in the cabinet 10.
  • a steam generator 200 is installed at a specific position of the cabinet 10 to generate high-temperature steam.
  • an indirect drive type dryer which rotates the drum 20 using the motor 70 and the belt 68 is shown and described in this embodiment, the present invention is not limited thereto. That is, a direct drive type dryer which directly rotates the drum 20 by a motor directly connected to the rear surface of the drum 20 can be applied to the present invention.
  • the cabinet 10 forming an external appearance of the dryer includes a base 12 forming a bottom surface, a pair of side covers 14 vertically installed on the base 12, a front cover 16 and a rear cover 18 respectively installed on the front and rear surfaces of the side covers 14, and a top cover 17 positioned at an upper portion of the side covers 14.
  • a control panel 19 having various control switches and the like is generally disposed on the top cover 17 or the front cover 16.
  • a door 164 is installed on the front cover 16.
  • the rear cover 18 includes a suction port 182 which introduces outside air and an exhaust hole 184 serving a final passage to discharge air in the drum 20 to the outside.
  • An inner space of the drum 20 serves as a drying chamber to perform a drying operation, and the drum 20 has a lift 22 therein.
  • a front supporter 30 and a rear supporter 40 are installed between the drum 20 and the cabinet 10 (the front cover 16 and the rear cover 18).
  • the drum 20 is rotatably installed between the front supporter 30 and the rear supporter 40.
  • Sealing members are installed between the front supporter 30 and the drum 20 and between the rear supporter 40 and the drum 20, respectively, to prevent leakage. That is, the front supporter 30 and the rear supporter 40 close the front and rear surfaces of the drum 20 to form the drying chamber and serve to support a front end and a rear end of the drum 20.
  • An opening is formed on the front supporter 30 such that the drum 20 communicates with the outside of the dryer.
  • the opening is selectively opened and closed by the door 164.
  • a lint duct 50 serving as a passage for discharging air of the drum 20 to the outside is connected to the front supporter 30, and a lint filter 52 is installed in the lint duct 50.
  • the lint duct 50 is connected to one side of the blower unit 60, and the other side of the blower unit 60 is connected to the exhaust duct 80.
  • the exhaust duct 80 communicates with the exhaust hole 184 disposed on the rear cover 18.
  • the blower unit 60 when the blower unit 60 is operated, air in the drum 20 is discharged to the outside through the lint duct 50, the exhaust duct 80 and the exhaust hole 184. In this case, foreign matter such as nap is filtered by the lint filter 52.
  • the blower unit 60 includes a blower 62 and a blower housing 64, and the blower 62 is connected to and driven by the motor 70 for driving the drum 20.
  • An opening 42 generally having a number of through holes is formed on the rear supporter 40.
  • the opening 42 is connected to the hot air supply duct 44.
  • the hot air supply duct 44 communicates with the drum 20 to serve as a passage for supplying hot air to the drum 20. Accordingly, the hot air heater 90 is installed at a specific position of the hot air supply duct 44.
  • the steam generator 200 is installed at a specific position of the cabinet 10 to generate steam and supply the steam into the drum 20.
  • the steam generator 200 is described in detail below with reference to FIG. 3 .
  • the steam generator 200 includes a water tank 210 for accommodating water therein, a heater 240 mounted in the water tank 210, a water level sensor 260 which measures a water level of the steam generator 200, and a temperature sensor 270 which measures a temperature of the steam generator 200.
  • the water level sensor 260 includes a common electrode 262, a low water level electrode 264 and a high water level electrode 266. The water level sensor 260 detects a high water level and a low water level according to whether the common electrode 262 is electrically connected to the high water level electrode 266 or whether the common electrode is electrically connected to the low water level electrode 264.
  • a water supply hose 220 for supplying water is connected to one side of the steam generator 200 and a steam hose 230 for discharging steam is connected to the other side of the steam generator 200. It is preferable to provide a nozzle 250 at a leading end of the steam hose 230.
  • a faucet and a water supply valve 281 are connected to one end of the water supply hose 220.
  • a leading end portion of the steam hose 230 or the nozzle 250, that is, a steam discharge port, is disposed at a specific position of the drum 20 to spray steam into the drum 20.
  • the nozzle 250 is disposed at the front of the drum 20 in this embodiment, the nozzle 250 can be installed on the rear supporter 40.
  • a valve 282 is installed on the steam hose 230.
  • a controller opens the water supply valve 282 to supply water to the steam generator 200.
  • the controller closes the water supply valve 282. In this case, the valve 282 installed on the steam hose is also closed.
  • the controller turns on the heater 240 to heat water in the steam generator 200.
  • the valve 282 installed on the steam hose 230 is opened.
  • the steam generated in the steam generator 200 is supplied to the drum 20 through the steam hose 230.
  • a flowmeter can be installed on the water supply hose to detect an amount of water supplied into the steam generator.
  • the flowmeter is a conventional well-known impeller flowmeter.
  • the amount of water supplied through the water supply hose is detected using the rotation number of the impeller.
  • the controller receives a signal of the flowmeter and closes the water supply valve when the amount of water reaches a preset amount.
  • the water level sensor can be used. For example, if a high water level is sensed by a high water level terminal of the water level sensor, the valve installed on the steam hose is closed. In another way, a terminal capable of sensing a water level higher than the water level sensed by the high water level terminal (so-called 'critical water level terminal') can be further provided and used. If a critical water level is sensed by the critical water level terminal, the valve of the steam hose is closed. In this case, the critical water level can be set as a maximum allowable water level of the steam generator.
  • the present invention relates to a laundry machine to wash or dry the laundry. According to the present invention, even though water is excessively supplied to the steam generator and overflow is generated, it is possible to prevent the water from flowing into the drum. Particularly, even when there is an error in the water supply, it is possible to prevent water from overflowing the steam generator and flowing into the drum.

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

Claims (7)

  1. Waschmaschine, die umfasst:
    - eine Trommel (20), in der Wäsche platziert wird;
    - einen Dampferzeuger (200), um Dampf zu erzeugen;
    - eine Wasserzufuhrleitung (220), durch die dem Dampferzeuger (220) Wasser zugeführt wird;
    - eine Dampfleitung (230), durch die der Trommel (20) der erzeugte Dampf zugeführt wird; und
    - ein Ventil (282), das in der Dampfleitung (230) positioniert ist,
    dadurch gekennzeichnet, dass das Ventil (282) so gesteuert wird, dass es basierend auf einer Temperatur des Dampferzeugers (200) geschlossen wird, und/oder ein Messgerät in der Wasserzufuhrleitung installiert ist, um eine Wassermenge zu messen, die durch die Wasserzufuhrleitung (220) fließt, so dass verhindert wird, dass das Wasser in dem Dampferzeuger (220) durch die Dampfleitung (230) zu der Trommel (20) fließt.
  2. Waschmaschine nach Anspruch 1, wobei die Wasserzufuhrleitung (220) mit einem Wasserzufuhrventil (281) verbunden ist und das Wasserzufuhrventil (281) mit einem Wasserhahn verbunden ist.
  3. Waschmaschine nach Anspruch 1, wobei das Ventil (282) in die offene Position gesteuert wird, wenn die Temperatur eine voreingestellte Temperatur erreicht.
  4. Waschmaschine nach Anspruch 3, wobei das Ventil (282) in die geschlossene Position gesteuert wird, wenn eine Wassermenge, die dem Dampferzeuger (200) zugeführt wird, eine voreingestellte Menge erreicht.
  5. Waschmaschine nach Anspruch 1, wobei das Messgerät einen Impeller-Durchflussmesser enthält.
  6. Waschmaschine nach Anspruch 5, wobei das Ventil (282) in die geschlossene Position gesteuert wird, wenn eine Drehzahl eines Impellers des Impeller-Durchflussmessers eine voreingestellte Anzahl erreicht.
  7. Waschmaschine nach Anspruch 1, wobei der Dampferzeuger (200) einen Vorratsbehälter (210) enthält, um darin Wasser aufzunehmen.
EP08011437.4A 2007-09-21 2008-06-24 Reinigungsmaschine Expired - Fee Related EP2039824B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070096565A KR20090030899A (ko) 2007-09-21 2007-09-21 세탁장치

Publications (3)

Publication Number Publication Date
EP2039824A2 EP2039824A2 (de) 2009-03-25
EP2039824A3 EP2039824A3 (de) 2009-06-17
EP2039824B1 true EP2039824B1 (de) 2014-01-22

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EP08011437.4A Expired - Fee Related EP2039824B1 (de) 2007-09-21 2008-06-24 Reinigungsmaschine

Country Status (4)

Country Link
US (1) US20090078007A1 (de)
EP (1) EP2039824B1 (de)
KR (1) KR20090030899A (de)
CN (1) CN101392449A (de)

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US7707859B2 (en) * 2006-08-15 2010-05-04 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance
US7591859B2 (en) * 2006-08-15 2009-09-22 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance using a weight sensor

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EP2039824A2 (de) 2009-03-25
KR20090030899A (ko) 2009-03-25
US20090078007A1 (en) 2009-03-26
EP2039824A3 (de) 2009-06-17
CN101392449A (zh) 2009-03-25

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