EP2327349B1 - Reinigungsverfahren für einen Wasserspeicherbehälter einer Waschmaschine, und entsprechende Waschmaschine - Google Patents

Reinigungsverfahren für einen Wasserspeicherbehälter einer Waschmaschine, und entsprechende Waschmaschine Download PDF

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Publication number
EP2327349B1
EP2327349B1 EP10192562.6A EP10192562A EP2327349B1 EP 2327349 B1 EP2327349 B1 EP 2327349B1 EP 10192562 A EP10192562 A EP 10192562A EP 2327349 B1 EP2327349 B1 EP 2327349B1
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EP
European Patent Office
Prior art keywords
water
storage tank
water storage
cleaning
cleaning liquid
Prior art date
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Active
Application number
EP10192562.6A
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English (en)
French (fr)
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EP2327349A1 (de
Inventor
Daniel Serve
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Groupe Brandt SAS
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Groupe Brandt SAS
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Publication of EP2327349A1 publication Critical patent/EP2327349A1/de
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4291—Recovery arrangements, e.g. for the recovery of energy or water
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0057—Cleaning of machines parts, e.g. removal of deposits like lime scale or proteins from piping or tub
    • 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 
    • D06F39/20—Arrangements for water recovery
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation
    • A47L15/4221—Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/10—Water cloudiness or dirtiness, e.g. turbidity, foaming or level of bacteria
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/22—Number of operational cycles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/34—Change machine operation from normal operational mode into special mode, e.g. service mode, resin regeneration mode, sterilizing mode, steam mode, odour eliminating mode or special cleaning mode to clean the hydraulic circuit

Definitions

  • the present invention relates firstly to a method of cleaning a water storage tank of a washing machine.
  • It also relates to a washing machine suitable for implementing this method of cleaning a water storage tank.
  • the present invention relates to the cleaning of a water storage tank of a domestic washing machine.
  • the present invention applies more particularly to washing machines for domestic use comprising a water storage tank coming from at least one washing and / or rinsing and / or drying phase for reuse during an operating cycle. following implemented by said washing machine.
  • a washing machine with a water recovery device comprising a washing tub able to be supplied with fresh water by a normally closed water supply circuit, adapted to be opened by programmed control means of the machine to execute operating cycles comprising at least one washing phase and / or at least one rinsing phase.
  • the water recovery device is capable of storing in a volumetric measurement tank the water coming from at least one of said phases for reuse during a following cycle.
  • the water contained in the tank is emptied by gravity into the washing tank when opening a valve connecting two washing water circulation pipes to the washing tank.
  • the tank is cleaned and emptied automatically with network water flowing through a network water inlet pipe, a water softener, said tank, a valve and then a water outlet pipe opening into a sump of the washing tank.
  • the tank is cleaned during each filling phase in network water taking place after a water recovery phase implemented by the operation of a pump dedicated to filling the tank.
  • this method of cleaning the water storage tank has the drawback of modifying the hydraulic water distribution circuit of a conventional washing machine so as to systematically introduce the mains water through the tank and not directly into the wash tank.
  • the tank is cleaned only with water from the network when the tank is filled with water following the evacuation of the water contained therein so as to rinse the tank with water from the tank. network.
  • the object of the present invention is to solve the aforementioned drawbacks and to propose a method for cleaning a water storage tank of a washing machine making it possible to effectively clean said tank by a simplified hydraulic water distribution circuit. minimizing the cost of obtaining said machine and retaining the hydraulic water distribution circuit of a washing machine devoid of said tank and to propose an associated washing machine.
  • the present invention relates, according to a first aspect, to a method of cleaning a water storage tank of a washing machine, said washing machine comprising a washing tub, a hydraulic distribution circuit of water comprising a water circulation pump, said water storage tank being supplied with water coming from at least one washing and / or rinsing and / or drying phase for reuse during a following operating cycle implemented by said machine.
  • the method for cleaning a water storage tank of a washing machine makes it possible to clean said water storage tank by filling the latter with a cleaning liquid up to an overflow zone connecting said tank to the washing tank, where said overflow zone defining a maximum water level inside said tank.
  • the water storage tank is filled with cleaning liquid by means of a water circulation pump so as to implement forced circulation of a cleaning liquid. Then, the cleaning liquid having circulated inside the water storage tank is returned by overflow in the washing tank. And then, the quantity of cleaning liquid remaining in the water storage tank below the overflow zone is emptied by gravity into the washing tank by the valve kept in the open position and through the circulation pump d water stopped.
  • the method of cleaning a water storage tank of a washing machine makes it possible to guarantee cleaning on all of the internal surfaces of said tank in contact with recovery water from minus a washing and / or rinsing and / or drying phase.
  • this method for cleaning a water storage tank of a washing machine makes it possible to keep the hydraulic water distribution circuit of a washing machine devoid of said tank.
  • the method for cleaning a water storage tank of a washing machine according to the invention can be implemented either as an operating cycle dedicated to cleaning said tank implemented by said machine, or by adding sequences at the end of the washing and / or rinsing phases of an operating cycle implemented by said machine.
  • the method for cleaning a water storage tank of a washing machine according to the invention can be implemented with the addition of a detergent to the water used for cleaning said tank. , such as for example a cleaning and / or disinfection product.
  • This washing machine can be a dishwashing machine for household use, or a washing machine for household use, or a washing and drying machine for household use.
  • the present invention applies to all types of washing apparatus, and in particular for front loading and top loading of dishes or linen.
  • a dishwashing machine 1 comprises a washing tub 2, the front face of which is closed by a door (not shown).
  • the washing tank 2 is surrounded by a body 3 comprising an upper wall 3a, side walls 3b, a bottom wall 3c and a bottom wall 3d.
  • the door of the washing tank 2 makes it possible to close an opening made in the washing tank 2.
  • This washing tank door 2 can thus be movable between a closed position in which it seals the opening, and an open position.
  • the washing tub door 2 is pivotally mounted around an axis of rotation integral with the body 3 of the dishwashing machine 1.
  • the washing tank 2 comprises at least one means for spraying water 4a, 4b with a washing and / or rinsing bath on the dishes.
  • the washing tank 2 comprises an upper water spray reel 4b and a lower spray reel 4a.
  • a water from a washing and / or rinsing bath is defined as water allowing the cleaning of the dishes and circulating in a hydraulic water distribution circuit 5 of a dishwashing machine 1.
  • the origin of the water in a washing and / or rinsing bath is water coming from the supply network of the dishwasher 1.
  • the washing tank 2 comprises an upper wall 2a, side walls 2b, a bottom wall 2c and a lower wall 2d.
  • the body 3 of the dishwashing machine 1 is adapted to house the washing tub 2.
  • Said washing tub 2 is adapted to contain in particular the water from the washing and / or rinsing baths of the different phases of a cycle of cleaning.
  • At least one dish basket (not shown) is mounted inside the washing tub 2.
  • a dish basket can be located in the upper part of the washing tank 2 and designated by upper basket, and a dish basket can be located in the lower part of the washing tank 2 and designated by lower basket.
  • the dish baskets can be pushed and removed by sliding them inside the washing tub 2 of the dishwashing machine 1 either after the end of a cleaning cycle for unloading the dishes or before start of a cleaning cycle for loading dishes.
  • This dishwashing machine 1 is provided with a pump 6 for the circulation of water from a washing and / or rinsing bath in the washing tank 2.
  • the dishwashing machine 1 operates in such a way as to minimize the washing and / or rinsing bath retained in a sump 7 formed in the bottom wall 2d of the washing tub 2.
  • the water circulation pump 6 draws the water from the washing and / or rinsing bath from the sump 7 to circulate the water from the washing and / or rinsing bath under pressure to the spraying means. 4a, 4b. Then, the washing and / or rinsing bath returns to the sump 7.
  • This water circulation pump 6 is driven by an electric motor.
  • the dishwashing machine 1 can also include a pump 24 for draining the waste water from the washing and / or rinsing bath.
  • the drain pump 24 draws the waste water from the washing and / or rinsing bath from the washing tank 2, and in particular from the sump 7, in order to evacuate the waste water from the washing and / or rinsing bath in a wastewater network connected to the dishwasher 1.
  • This drain pump 24 is driven by an electric motor.
  • the water of at least one washing and / or rinsing bath contained in the washing tank 2, and in particular in the sump 7, can be heated by a heating means (not shown), such as for example a electric heating resistance.
  • the dishwashing machine 1 comprises control means (not shown), and in particular at least one microcontroller, making it possible to carry out predetermined operating cycles.
  • the washing machine 1 comprises a water storage tank 8 coming from at least one washing and / or rinsing and / or drying phase for reuse during a following operating cycle implemented by said machine 1.
  • the water storage tank 8 is connected downstream of the water circulation pump 6 by a water circulation pipe 9.
  • the water circulation pipe 9 located between the water storage tank 8 and the water circulation pump 6 comprises a valve 10 so as to supply water to said water storage tank 8 from the tank. washing 2 by putting said water circulation pump 6 into operation and discharging water from said water storage tank 8 to said washing tank 2 by gravity through said water circulation pump 6 to the stop.
  • the dishwashing machine 1 provided with a water storage tank 8 makes it possible to recover water from at least one washing and / or rinsing and / or drying phase, to store at least part of this water, and then to reuse at least part of this water during a following operating cycle implemented by said dishwashing machine 1.
  • the water storage tank 8 of the dishwashing machine 1 makes it possible to store all or part of the water of at least one washing and / or rinsing and / or drying phase so as to reduce as much the water consumption of an operating cycle implemented by said dishwashing machine 1.
  • the hydraulic water distribution circuit 5 uses the water circulation pump 6 to supply water with at least one means for spraying water 4a, 4b into the washing tank 2 and to supply water to the storage tank. of water 8 during the recovery of water from at least one washing and / or rinsing and / or drying phase.
  • the hydraulic water distribution circuit 5 of a dishwashing machine is standardized between a dishwashing machine with or without a water storage tank 8 since the water supply of said at least one water spray means 4a, 4b is not modified compared to a conventional washing machine.
  • Part 5a of the hydraulic water distribution circuit 5 making it possible to supply water to the water storage tank 8 and to empty it is connected to part 5b of the hydraulic water distribution circuit 5 of the washing the dishes 1 supplying at least one means for spraying water 4a, 4b without modifying this part 5b so as to standardize the hydraulic water distribution circuit 5 of the dishwashing machines 1 with or without storage tank d 8.
  • the hydraulic water distribution circuit 5 of a dishwashing machine 1 makes it possible to reduce the number of water flow pipes, to maintain a structure and a positioning of the members inside the body 3 of dishwashing machine 1 devoid of a water storage tank 8 so as to standardize all the dishwashing machines produced by a manufacturer.
  • the hydraulic water distribution circuit 5 of a dishwashing machine 1 makes it possible to use it with or without the water storage tank 8 according to the user's wishes.
  • the dishwashing machine 1 connected or not connected to the water storage tank 8 can be used such as a conventional washing machine if the user so wishes.
  • the device for recovering water 11 coming from at least one washing and / or rinsing and / or drying phase comprising the water storage tank 8, the valve 10 and the circulation pipe d water 9 can be deactivated or activated through the control means of the dishwashing machine 1, and in particular a microcontroller, so as to deactivate or activate water recovery.
  • the hydraulic water distribution circuit 5 of a dishwashing machine 1 makes it possible to adapt the operating cycles of said dishwashing machine 1 as a function of whether or not the water storage tank 8 is connected with said dishwasher 1.
  • the water storage tank 8 When using a water storage tank 8 on a dishwashing machine 1, the water storage tank 8 is supplied by a water circulation pipe 9 connected downstream of the pump. water circulation 6 so that said water circulation pump 6 supplies water to said tank 8 and / or at least one means for spraying water 4a, 4b.
  • the water circulation pump 6 being stopped is adapted to allow a flow of water to pass as soon as the valve 10 mounted on the water circulation pipe 9.
  • the hydraulic water distribution circuit 5 between the washing tank 2 and the water storage tank 8 comprising a single water circulation pump 6 and a valve 10 is simplified so as to limit the costs. obtaining and guaranteeing the reliability of the dishwashing machine 1 according to the invention.
  • the hydraulic water distribution circuit 5 of the dishwashing machine 1 is adapted to be installed on a conventional dishwashing machine without modifying the part 5b of the hydraulic distribution circuit of water 5 from said washing machine supplying one or more water spraying means 4a, 4b.
  • the water coming from a washing and / or rinsing and / or drying bath supplying the water storage tank for reuse during a following operating cycle implemented by the dishwasher 1 is the heated water, and preferably the water from the last of the rinsing bath and / or the water used during a drying phase by condensation.
  • the water storage tank 8 is connected to the washing tank 2 by means of the water circulation pipe 9, the valve 10 and the water circulation pump 6.
  • the valve 10 and the water circulation 6 are controlled by control means of the dishwashing machine 1, such as for example a microcontroller.
  • the water storage tank 8 is located downstream of the valve 10 and of the water circulation pump 6.
  • the water circulation pump 6 is located between the washing tank 2 and the valve 10.
  • the valve 10 located between the water storage tank 8 and the water circulation pump 6 can be controlled electrically or by pressure in the hydraulic water distribution circuit 5.
  • the water storage tank 8 and said at least one water spraying means 4a, 4b are supplied by a single water circulation pump 6.
  • the water storage tank 8 can be fixed on the body 3 of the dishwashing machine 1 and / or on the washing tub 2. This water storage tank 8 can also be placed inside or the outside of the body 3 of the dishwasher 1.
  • the positioning and / or fixing of the washing and / or rinsing water tank with the washing machine are in no way limiting and may be different.
  • the water circulation pump 6 is a centrifugal pump.
  • this centrifugal pump allows the passage of a flow of water inside its body when it is not in operation.
  • centrifugal pump overcomes the disadvantages of positive displacement pumps where the water is compressed to be moved causing the activation of these positive displacement pumps continuously to send water in one direction or the passage of water in other water drain pipes to send water in an opposite direction.
  • centrifugal pump for the water circulation pump 6 of the dishwashing machine 1 makes it possible to minimize the costs of obtaining the latter since a centrifugal pump is less expensive than a positive displacement pump.
  • the water storage tank 8 is connected to the hydraulic water distribution circuit 5 upstream of a water distribution means 12.
  • the water distribution means 12 comprises at least two positions so as to supply water alternately with either the water storage tank 8 or said at least one water spraying means 4a, 4b.
  • the water distribution means 12 is a multi-position rotary disc valve.
  • the positioning of the rotary disc inside the valve makes it possible to close or release water passage openings so as to control the water supply to each of the organs of the hydraulic water distribution circuit.
  • the water distribution means 12 is controlled by the control means of the dishwashing machine 1, such as for example a microcontroller.
  • the water filling of the water storage tank 8 is implemented by control means of the dishwashing machine 1, such as for example a microcontroller, controlling the means for distributing water 12 in a first position, ie in a closed state, so that at least one water circulation pipe 13a, 13b supplying water with said at least one water spraying means 4a, 4b be closed.
  • control means of the dishwashing machine 1 such as for example a microcontroller, controlling the means for distributing water 12 in a first position, ie in a closed state, so that at least one water circulation pipe 13a, 13b supplying water with said at least one water spraying means 4a, 4b be closed.
  • the water circulation pump 6 sends the water in the water circulation pipe 9 and then in the water storage tank 8 so as to fill the latter with water.
  • the water distribution means 12 can comprise more than two positions so as to supply water on the one hand alternately to the water storage tank 8 and said at least one means water spray 4a, 4b and on the other hand simultaneously the water storage tank 8 and said at least one water spray means 4a, 4b.
  • the water contained in the washing tank 2 coming from at least one washing and / or rinsing and / or drying phase can also be distributed between said water storage tank 8 and said at least one means of water spray 4a, 4b when the water distribution means 12 is in a third position, or even distributed between several water spray means 4a, 4b when the distribution means of water 12 is in a fourth position as a function of the number of positions of said water distribution means 12.
  • the water circulation pipe 9 connected to the water storage tank 8 is directly connected to a water distribution means, where said water distribution means supplies water either said at least one means for spraying water 4a, 4b or said water storage tank 8 by means of said water circulation pump 6.
  • the water circulation pipe 9 is connected directly to the water distribution means guaranteeing a water supply exclusively either to the water storage tank 8 or to said at least one water spraying means 4a , 4b.
  • the water distribution means can be a hydraulic component comprising a moving element so as to distribute water through different water circulation pipes 9, 13a, 13b, where said moving element is actuated for example by a thermo actuator or a motor.
  • the opening and closing of the valve 10 are implemented electrically through the control means of the dishwashing machine 1.
  • the opening of the valve 10 is implemented by the pressure of the water in the hydraulic water distribution circuit 5 linked to the operation of the water circulation pump 6 when the water distribution means 12 is in the closed position.
  • the valve 10 may include an elastic return element of a closure element (not shown) making it possible to close the passage of water inside said valve 10 when the pressure in the line 25 of the hydraulic distribution circuit of water 5 exerted by the water circulation pump 6 is less than a predetermined value.
  • the pressure in the line 25 of the hydraulic water distribution circuit 5 increases when the part 5b of said hydraulic water distribution circuit 5 is closed by the water distribution means 12 and that the water circulation pump 6 is put into operation.
  • valve 10 As soon as the pressure exerted by the water circulation pump 6 in the line 25 of the hydraulic water distribution circuit 5 exceeds the predetermined value allowing the closure element of the valve 10 to move, the valve 10 is in the open position so as to fill the water storage tank 8 with water.
  • the valve 10 is in the closed position by means of the elastic return element bringing the closure element back to the initial position as soon as the pressure in the line 25 of the hydraulic water distribution circuit 5 decreases below the value predetermined.
  • the water contained in the water storage tank 8 is contained inside of it as soon as the valve 10 is closed and the water spraying means 4a, 4b can be supplied with water by moving the water distribution means 12 to the water supply position of said water spraying means 4a, 4b and putting the water circulation pump 6 into operation.
  • the valve 10 is opened electrically by the control means of the dishwashing machine 1 so as to drain the water from the storage tank 8 to the washing tank 2.
  • the water circulation pipe 9 is connected to a water circulation pipe 25 connecting the water circulation pump 6 by means of water distribution 12 then to at least one water spraying means 4a , 4b so that the part 5a of the hydraulic water distribution circuit 5 is connected to the part 5b of said hydraulic water distribution circuit 5 without modifying the part 5b of said hydraulic water distribution circuit 5 as carried out on conventional washing machines.
  • the water storage tank 8 is filled with water by the water circulation pump 6 and produced by a water passage opening 14 formed in the lower part of said water storage tank 8.
  • the water storage tank 8 can be filled with water in a chronometric manner. This mode of filling in chronometric water with the water storage tank 8 is controlled by a period of time of operation of the water circulation pump 6 through the control means of the dishwashing machine 1, such as for example a microcontroller. The period of time when the water circulation pump 6 is in operation is dependent on the water flow rate of said pump 6 and on the volume of the water storage tank 8.
  • the filling of the water storage tank 8 with water to a predetermined maximum water level in said tank 8 is detected by the change in speed of the drive motor of the pump. circulation of water 6 due to defusing said pump 6.
  • the water storage tank 8 comprises at least one opening 15 in fluid communication with the washing tank 2 so as to overflow the water from said water storage tank 8 into said tank. washing 2 and / or producing a venting device between said water storage tank 8 and said washing tank 2.
  • said at least one opening 15 of the water storage tank 8 in fluid communication with the washing tank 2 is located in the upper part of said water storage tank 8.
  • said at least one opening 15 of the water storage tank 8 in fluid communication with the washing tank 2 is located in the lower part of said water storage tank 8 and connected fluidly to an internal overflow device (not shown) at said water storage tank 8.
  • said at least one opening 15 of the water storage tank 8 is connected to at least one opening 16 of the washing tank 2 by an air and / or water passage pipe 17.
  • the water storage tank 8 can comprise a means for detecting water filling (not shown) of said water storage tank 8.
  • the water filling detection means may for example be a high level detector of the pressure switch type, or else in direct contact with a float.
  • the type of detection means for filling the water with the water storage tank is in no way limiting and may be different.
  • the water filling detection means makes it possible to stop the operation of the water circulation pump 6 through the control means of the dishwashing machine 1 as soon as a maximum water level in the water storage 8 is reached and detected by said water filling detection means and closing the valve 10 so as to contain the water coming from the washing tank 2 in said tank 8.
  • the valve 10 mounted on the water circulation pipe 9 connecting the water circulation pump 6 to the water storage tank 8 is closed and the water circulation pump 6 is stopped.
  • the evacuation of water from the water storage tank 8 to the washing tank 2 is implemented by control means of the dishwashing machine 1, such as for example a microcontroller, controlling the opening of the valve 10 and stopping the water circulation pump 6 so as to allow water to flow from the water storage tank 8 as far as the washing tank 2, and in particular the sump 7, through the water circulation pipe 9 and the water circulation pump 6.
  • control means of the dishwashing machine such as for example a microcontroller, controlling the opening of the valve 10 and stopping the water circulation pump 6 so as to allow water to flow from the water storage tank 8 as far as the washing tank 2, and in particular the sump 7, through the water circulation pipe 9 and the water circulation pump 6.
  • the evacuation of water from the water storage tank 8 to the washing tank 2 is gravitational and does not require any driving of the water by a pump.
  • the water passage opening 14 formed in the lower part of the water storage tank 8 serves firstly to supply water to said tank 8 and secondly to empty said tank 8.
  • the sump 7 of the washing tank 2 comprises a water passage opening 19 towards a water circulation pump 6 and a water passage opening 20 towards a drain pump 24.
  • the water circulation pump 6 is connected at the inlet to a water circulation line 21 with the sump 7 of the washing tank 2, and at the output to at least one water circulation line 13a, 13b with a or several means for spraying water 4a, 4b arranged in the washing tank 2, and at a water circulation pipe 9 with the water storage tank 8.
  • the drain pump 24 is connected at the inlet to a water circulation pipe 22 with the sump 7 of the washing tank 2, and at the outlet to a water circulation pipe 23 with a waste water network.
  • the water storage tank 8 comprises a water passage opening 14 fluidly connected to the valve 10 and located above the maximum water level in the washing tank 2 when the bath water washing and / or rinsing inside said washing tank 2 is static.
  • the water storage tank 8 is evacuated by the valve 10 and produced by the water passage opening 14 formed in the lower part of said water storage tank 8.
  • the emptying of the water storage tank 8 is implemented by opening the valve 10 for a predetermined time so that the water from said tank 8 flows by gravity into the washing tank 2 when the pump water circulation 6 is stopped.
  • the predetermined duration of opening of the valve 10, during the emptying of the water storage tank 8, is controlled by control means of the dishwashing machine 1, such as for example by a microcontroller.
  • the emptying of the water storage tank 8 is controlled by preprogrammed control means of the dishwashing machine 1 during the recovery of water for a following operating cycle of said machine 1.
  • the emptying of the water storage tank 8 can also be controlled by a user or by control means of the dishwashing machine 1 so as to evacuate the water from said tank 8 to a waste water network, in particular before or after a prolonged period of non-use of said machine 1.
  • the hydraulic water distribution circuit 5 comprises a water filtration device 18 located upstream of the water storage tank 8 so as to supply filtered water to said water storage tank 8.
  • the water supplying the water storage tank 8 is filtered by the filtration device 18 since said filtration device 18 is located upstream of the water circulation pump 6.
  • the water circulation pump 6 draws from the water from the washing tank 2, in particular from the sump 7, following the passage of said water through the filtration device 18 to supply water to the water storage tank 8 so as to avoid fouling of said tank 8 and of part 5a of the hydraulic water distribution circuit 5.
  • the filtration device 18 is housed at least partially inside the sump 7 of the washing tank 2.
  • the filtration device 18 may include a waste trap, an intermediate filter and a micro filter.
  • the water storage tank 8 is thermally insulated by at least one layer of thermal insulator (not shown).
  • the thermal insulation covering the water storage tank 8 can consist of one or more layers made from a single material or from several materials, such as for example felt.
  • thermal insulation the number of layers of thermal insulation and the type of thermal insulation are in no way limiting and may be different.
  • the thermal insulation of the water storage tank 8 makes it possible to guarantee better conservation of the heat energy of the water by at least one washing and / or rinsing and / or drying phase for reuse during a next operating cycle implemented by the dishwasher 1.
  • the method for cleaning a water storage tank 8 of a washing machine 1 makes it possible to clean said water storage tank 8 by filling the latter with a cleaning liquid to an area of overflow connecting said tank 8 to the washing tank 2, where said overflow zone defining a maximum water level inside said tank 8.
  • the water storage tank 8 is filled with cleaning liquid by means of a water circulation pump 6 so as to implement forced circulation of a cleaning liquid. Then, the cleaning liquid having circulated inside the water storage tank 8 is returned by overflow in the washing tank 2. And then, the quantity of cleaning liquid remaining in the water storage tank 8 below the overflow zone is emptied by gravity into the washing tank 2 by the valve 10 kept in the open position and through the water circulation pump 6 stopped.
  • said at least one opening 15 of the water storage tank 8 in fluid communication with the washing tank 2 allowing the return of the cleaning liquid in said washing tank 2 is located in the upper part of said water storage tank 8 .
  • said at least one opening 15 of the water storage tank 8 in fluid communication with the washing tank 2 allowing the return of the cleaning liquid in said washing tank 2 is located in lower part of said water storage tank 8 and fluidly connected to an internal overflow device (not shown) to said water storage tank 8.
  • said at least one opening 15 of the water storage tank 8 is connected to at least one opening 16 of the washing tank 2 by a air and / or water passage 17.
  • the method of cleaning a water storage tank 8 of a washing machine 1 makes it possible to guarantee cleaning on all of the internal surfaces of said tank 8 in contact with recovery water coming from at least one washing and / or rinsing and / or drying phase.
  • this method of cleaning a water storage tank 8 of a washing machine 1 makes it possible to keep the hydraulic water distribution circuit of a washing machine devoid of said tank 8 .
  • the cleaning liquid for the water storage tank 8 comprises at least mains water supplied to the washing tank 2 of the washing machine 1.
  • the mains water can be mixed with a cleaning product so to form the cleaning liquid.
  • the cleaning product can for example be a detergent.
  • the mains water constituting at least partially the cleaning liquid can be used previously during a washing phase of an operating cycle of the washing machine 1.
  • the steps of circulating a cleaning liquid and returning the cleaning liquid to the washing tank 2 by overflow are implemented in a loop for a predetermined duration D.
  • the cleaning liquid introduced during the first filling of the water storage tank 8 to the overflow zone connecting said tank 8 to the washing tank 2 is reused and reintroduced into said tank 8 by means of the pump. circulation of water 6 so as to circulate said cleaning liquid between the water storage tank 8 and the washing tank 2 then said washing tank 2 and said tank 8 for a predetermined period D.
  • the predetermined duration D of repetition of the steps of circulating a cleaning liquid and returning the cleaning liquid to the washing tank 2 by overflow is for example of the order of 15 minutes.
  • the predetermined duration of repetition of the steps of circulating a cleaning liquid and returning the cleaning liquid to the washing tank by overflow is in no way limiting and may be different.
  • the method for cleaning the water storage tank 8 of the washing machine 1 can be implemented either as an operating cycle dedicated to cleaning said tank 8 implemented by said machine 1, or by adding sequences at the end of the washing and / or rinsing phases of an operating cycle implemented by said machine 1.
  • the method for cleaning the water storage tank 8 of the washing machine 1 can be implemented with the addition of a detergent to the water used for cleaning said water tank 8, such as for example a cleaning and / or disinfection product.
  • the method for cleaning the water storage tank 8 of the washing machine 1 may include a step of heating the cleaning liquid comprising water and optionally a cleaning and / or disinfection product.
  • the step of circulating a cleaning liquid is implemented following the closure of the water distribution means 12, where the water storage tank 8 is connected to the hydraulic circuit 5 water distribution upstream of said water distribution means 12, and where said water distribution means 12 selects the supply of cleaning liquid by the water circulation pump 6 to the storage tank of water 8 and / or at least one means for spraying water 4a, 4b in the washing tank 2.
  • the cleaning liquid contained in the washing tank 2 is only directed towards the water storage tank 8 when the water distribution means 12 is in a first position so as to fill said tank 8 with cleaning liquid. and blocking the supply of cleaning liquid to said at least at least one water spraying means 4a, 4b for cleaning said tank 8.
  • the cleaning liquid contained in the washing tank 2 is only directed towards said at least one water spraying means 4a, 4b when the water distribution means 12 is in a second position of so as to supply cleaning liquid to said at least at least one water spraying means 4a, 4b and to block the supply of cleaning liquid to said tank 8 for cleaning the washing tank 2.
  • the water distribution means 12 comprises at least two positions so as to supply cleaning liquid to either the water storage tank 8 or said at least one water spraying means 4a, 4b.
  • the filling with cleaning liquid of the water storage tank 8 is implemented by control means of the dishwashing machine 1, such as for example a microcontroller, controlling the water distribution means 12 in a first position, ie in a closed state, so that at least one water circulation pipe 13a, 13b supplying water with said at least one water spraying means 4a , 4b is closed.
  • control means of the dishwashing machine 1 such as for example a microcontroller, controlling the water distribution means 12 in a first position, ie in a closed state, so that at least one water circulation pipe 13a, 13b supplying water with said at least one water spraying means 4a , 4b is closed.
  • the water circulation pump 6 sends the liquid cleaning in the water circulation pipe 9 then in the water storage tank 8 so as to fill the latter with cleaning liquid.
  • the means for distributing water 12 may include more than two positions so as to supply cleaning liquid on the one hand alternately to the water storage tank 8 and said at least one water spraying means 4a, 4b and on the other hand simultaneously to the tank water storage 8 and said at least one water spray means 4a, 4b.
  • the cleaning liquid contained in the washing tank 2 can also be distributed between the water storage tank 8 and said at least one water spraying means 4a, 4b when the water distribution means 12 is in a third position, or even distributed between several water spraying means 4a, 4b when the water distribution means 12 is in a fourth position as a function of the number of positions of said water distribution means 12.
  • the step of circulating a cleaning liquid is implemented following the activation of a water distribution means in a water filling position of the storage tank d water 8, wherein said water circulation line 9 connected to said water storage tank 8 is connected to said water distribution means, and where said water distribution means selects the supply of cleaning liquid by said water circulation pump 6 to said water storage tank 8 or to at least one means for spraying water 4a, 4b in the washing tank 2.
  • the water circulation pipe 9 is connected directly to the water distribution means guaranteeing a supply of cleaning liquid exclusively either to the water storage tank 8 or to said at least one spraying means. water 4a, 4b.
  • the water storage tank 8 is filled with cleaning liquid by the water circulation pump 6 and produced by a liquid passage opening 14 formed in the lower part of said water storage tank 8.
  • the step of circulating a cleaning liquid is preceded by a step of filtering water from the cleaning liquid contained in the washing tank 2.
  • the water circulation pump 6 takes cleaning liquid from the washing tank 2, in particular from the sump 7, following the filtration of said cleaning liquid to supply cleaning liquid to the water storage tank 8 of so as to avoid fouling of said reservoir 8 and of part 5a of the hydraulic water distribution circuit 5.
  • the cleaning liquid returned to the washing tank 2 by overflowing from the water storage tank 8 is again filtered to be reused during the step of circulating the cleaning liquid through the pipe.
  • circulation 9 then said water storage tank 8 by the pump water circulation 6.
  • the water filtration device 18 of the hydraulic water distribution circuit 5 located upstream of the water storage tank 8 makes it possible to filter the cleaning liquid so as to supply filtered cleaning liquid to said storage tank. water 8.
  • the cleaning liquid supplying the water storage tank 8 is filtered by the filtration device 18 since said filtration device 18 is located upstream of the water circulation pump 6.
  • the water circulation pump 6 draws of the cleaning liquid of the washing tank 2, in particular of the sump 7, following the passage of said cleaning liquid in the filtration device 18 to supply cleaning liquid to the water storage tank 8 so as to avoid fouling of said reservoir 8 and of part 5a of the hydraulic water distribution circuit 5.
  • the method comprises a step of heating the cleaning product.
  • the cleaning of the water storage tank 8 is improved by circulating the heated cleaning liquid through the water circulation pipe 9 and then of said water storage tank 8 by the circulation pump d water 6.
  • the cleaning liquid contained in the washing tank 2, and in particular in the sump 7, can be heated by a heating means (not shown), such as for example an electric heating resistor.
  • the cleaning liquid comprises a cleaning product
  • the chemical action of cleaning the cleaning liquid is improved by heating said cleaning liquid.
  • the method comprises a step of rinsing the water storage tank 8 implemented by circulating a rinsing liquid through the water circulation pipe 9 then said water storage tank 8 by the water circulation pump 6.
  • the water storage tank 8 is rinsed with a rinsing liquid comprising water renewed with respect to the cleaning liquid so as to remove the traces of remaining cleaning liquid and if necessary the micro dirt not removed during steps of circulating a cleaning liquid and returning the cleaning liquid to the washing tank 2 by overflow.
  • the rinsing liquid of the water storage tank 8 comprises at least mains water supplied to the washing tank 2 of the washing machine 1.
  • the mains water can be mixed with a rinsing product so to form the rinse aid.
  • the mains water constituting at least partially the rinsing liquid can be used previously during a rinsing phase of a cycle of washing machine operation 1.
  • the step of rinsing the water storage tank 8 with the rinsing liquid can be implemented according to the same steps using the cleaning liquid, and in particular the steps of circulating a cleaning liquid and return of the cleaning liquid to the washing tank 2 by overflow.
  • the method comprises a step of discharging the rinsing liquid from the water storage tank 8 to the washing tank 2 by gravity through the valve. 10 in the open position and through the water circulation pump 6 when stopped.
  • control means of the washing machine 1 propose to the user by means of a display device to implement a specific operating cycle corresponding to the method of cleaning the storage tank of water 8 either when a predetermined number of operating cycles of the washing machine 1 using said tank 8 is reached, or when a sensor for detecting a level of soiling detects a level of soiling above a predetermined threshold.
  • At least one of the steps of evacuating a cleaning liquid and / or rinsing the water storage tank 8 to the washing tank 2 by gravity is followed by a step of emptying said liquid. cleaning and / or rinsing from said washing tank 2 to a waste water network by means of the drain pump 24.
  • each of the steps for discharging a cleaning liquid and / or rinsing the water storage tank 8 to the washing tank 2 by gravity is followed by a step of emptying a cleaning liquid and / or rinsing from said washing tank 2 to a waste water network by means of the drain pump 24.
  • the method for cleaning the water storage tank 8 comprises a step of storing the cleaning liquid in the inert state in the water storage tank 8 implemented before and / or after the step of returning said liquid cleaning in the washing tank 2 by overflow so as to bring said cleaning liquid into contact with the walls of said water storage tank 8.
  • the method for cleaning the water storage tank 8 comprises a pause phase where the water storage tank 8 is filled with cleaning liquid so as to allow said cleaning liquid to act on the walls of said storage tank. water storage 8 and to facilitate cleaning thereof.
  • the step of storing the cleaning liquid in the inert state in the water storage tank 8 is implemented following the step of circulating said cleaning liquid through the water circulation pipe. 9 then said water storage tank 8 by said water circulation pump 6 so as to fill said water storage tank 8 with cleaning liquid, and either before, or after, or before and after the step return of said cleaning liquid in the washing tank 2 by overflow.
  • the step of storing the cleaning liquid in the inert state in the water storage tank 8 can be implemented either from the start of a cleaning cycle of said water storage tank 8 , or during the repetition of the steps of circulating said cleaning liquid and returning said cleaning liquid to the washing tank 2 by overflow.
  • the washing machine 1 includes an electronic card (not shown) which includes a control unit capable of implementing the method for cleaning the water storage tank according to the invention.
  • the control unit controls the valve 10, the water circulation pump 6, the water distribution means 12 or the water distribution means, and the drain pump 24 so as to clean the tank. for storing water 8 with the cleaning liquid and for rinsing said tank with the rinsing liquid, as described above.
  • the method of cleaning a water storage tank of a washing machine makes it possible to clean said water storage tank by filling the latter with a cleaning liquid up to to an overflow zone connecting said tank to the washing tank, where said overflow zone defining a maximum water level inside said tank.
  • the water storage tank is filled with cleaning liquid by means of a water circulation pump so as to implement a forced circulation of a cleaning liquid. Then, the cleaning liquid having circulated inside the water storage tank is returned by overflow in the washing tank. And then, the quantity of cleaning liquid remaining in the water storage tank below the overflow zone is emptied by gravity into the washing tank by the valve kept in the open position and through the circulation pump d water stopped.
  • the washing machine implementing the method for cleaning a water storage tank according to the invention can be a dishwashing machine as illustrated in FIG. figure 1 .
  • the invention can also be applied to a washing machine, or a washing machine and dryer.
  • the water storage tank may comprise a reserve of heat accumulation material so as to recover the heat energy of the water from at least one washing and / or washing and / or drying.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (10)

  1. Reinigungsverfahren für einen Wasserspeicherbehälter (8) einer Waschmaschine (1), wobei die Waschmaschine (1) einen Waschbehälter (2), einen hydraulischen Wasserverteilungskreislauf (5), umfassend eine Wasserzirkulationspumpe (6), umfasst, wobei der Wasserspeicherbehälter (8) mit Wasser versorgt wird, das von mindestens einer Wasch- und/oder Spül- und/oder Trocknungsphase für eine Wiederverwendung während eines nächsten Betriebszyklus stammt, der von der Maschine (1) durchgeführt wird, wobei das Verfahren mindestens die folgenden Schritte umfasst:
    - Öffnen eines Ventils (10), das auf einer Wasserzirkulationsleitung (9) angebracht ist, welche die Wasserzirkulationspumpe (6) mit dem Wasserspeicherbehälter (8) verbindet;
    - Inzirkulationversetzen einer Reinigungsflüssigkeit durch die Wasserzirkulationsleitung (9), dann den Wasserspeicherbehälter (8) mittels der Wasserzirkulationspumpe (6);
    - Rückführen der Reinigungsflüssigkeit in den Waschbehälter (2) durch Überlauf durch mindestens eine Öffnung (15) in Fluidkommunikation mit dem Waschbehälter (2);
    - Ableiten der Reinigungsflüssigkeit aus dem Wasserspeicherbehälter (8) zum Waschbehälter (2) mittels Schwerkraft mittels des Ventils (10) in geöffneter Position und durch die ausgeschaltete Wasserzirkulationspumpe (6);
    dadurch gekennzeichnet, dass es mindestens den folgenden Schritt umfasst:
    - Lagern, in trägem Zustand, der Reinigungsflüssigkeit im Wasserspeicherbehälter (8), durchgeführt vor und/oder nach dem Schritt des Rückführens der Reinigungsflüssigkeit in den Waschbehälter (2) durch Überlauf derart, dass die Reinigungsflüssigkeit mit den Wänden des Wasserspeicherbehälters (8) in Kontakt versetzt wird.
  2. Reinigungsverfahren eines Wasserspeicherbehälters (8) einer Waschmaschine (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Schritte des Inzirkulationversetzens einer Reinigungsflüssigkeit und des Rückführens der Reinigungsflüssigkeit in den Waschbehälter (2) durch Überlauf während einer vorher festgelegten Dauer (D) in einer Schleife durchgeführt werden.
  3. Reinigungsverfahren eines Wasserspeicherbehälters (8) einer Waschmaschine (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Schritt des Inzirkulationversetzens einer Reinigungsflüssigkeit infolge des Verschließens eines Wasseraufteilungsmittels (12) durchgeführt wird, wobei der Wasserspeicherbehälter (8) an den dem Wasseraufteilungsmittel (12) vorgelagerten hydraulischen Wasserverteilungskreislauf (5) angeschlossen ist, und wobei das Wasseraufteilungsmittel (12) die Versorgung mit Reinigungsflüssigkeit mittels der Wasserzirkulationspumpe (6) aus dem Wasserspeicherbehälter (8) und/oder mindestens einem Wasserberieselungsmittel (4a, 4b) in dem Waschbehälter (2) auswählt.
  4. Reinigungsverfahren eines Wasserspeicherbehälters (8) einer Waschmaschine (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Schritt des Inzirkulationversetzens einer Reinigungsflüssigkeit infolge der Aktivierung eines Wasserverteilungsmittels in einer Wasserbefüllposition des Wasserspeicherbehälters (8) durchgeführt wird, wobei die mit dem Wasserspeicherbehälter (8) verbundene Wasserzirkulationsleitung (9) an das Wasserverteilungsmittel angeschlossen ist, und wobei das Wasserverteilungsmittel die Versorgung mit Reinigungsflüssigkeit mittels der Wasserzirkulationspumpe (6) aus dem Wasserspeicherbehälter (8) und/oder mindestens einem Wasserberieselungsmittel (4a, 4b) in dem Waschbehälter (2) auswählt.
  5. Reinigungsverfahren eines Wasserspeicherbehälters (8) einer Waschmaschine (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass vor dem Schritt des Inzirkulationversetzens einer Reinigungsflüssigkeit ein Wasserfiltrationsschritt der in dem Waschbehälter (2) enthaltenen Reinigungsflüssigkeit erfolgt.
  6. Reinigungsverfahren eines Wasserspeicherbehälters (8) einer Waschmaschine (1) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Verfahren einen Heizschritt des Reinigungsprodukts umfasst.
  7. Reinigungsverfahren eines Wasserspeicherbehälters (8) einer Waschmaschine (1) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Verfahren nach dem Schritt des Ableitens der Reinigungsflüssigkeit aus dem Wasserspeicherbehälter (8) zum Waschbehälter (2) durch Schwerkraft einen Schritt des Spülens des Wasserspeicherbehälters (8) umfasst, der durch Inzirkulationversetzen einer Spülflüssigkeit durch die Wasserzirkulationsleitung (9), dann den Wasserspeicherbehälter (8) mittels der Wasserzirkulationspumpe (6) durchgeführt wird.
  8. Reinigungsverfahren eines Wasserspeicherbehälters (8) einer Waschmaschine (1) nach Anspruch 7, dadurch gekennzeichnet, dass das Verfahren nach dem Schritt des Spülens des Wasserspeicherbehälters (8) einen Schritt des Ableitens der Spülflüssigkeit aus dem Wasserspeicherbehälter (8) zum Waschbehälter (2) durch Schwerkraft mittels des Ventils (10) in geöffneter Position und durch die ausgeschaltete Wasserzirkulationspumpe (6) umfasst.
  9. Reinigungsverfahren eines Wasserspeicherbehälters (8) einer Waschmaschine (1) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass mindestens einem der Schritte des Ableitens einer Reinigungs- und/oder Spülflüssigkeit aus dem Wasserspeicherbehälter (8) zum Waschbehälter (2) durch Schwerkraft ein Schritt des Abpumpens der Reinigungs- und/oder Spülflüssigkeit aus dem Waschbehälter (2) zu einem Abwassernetz mittels einer Entleerungspumpe (24) folgt.
  10. Waschmaschine (1), aufweisend eine Elektronikkarte, die eine Steuereinheit umfasst, dadurch gekennzeichnet, das die Steuereinheit zur Durchführung des Reinigungsverfahrens eines Wasserspeicherbehälters (8) nach einem der Ansprüche 1 bis 9 geeignet ist.
EP10192562.6A 2009-11-27 2010-11-25 Reinigungsverfahren für einen Wasserspeicherbehälter einer Waschmaschine, und entsprechende Waschmaschine Active EP2327349B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0905734A FR2953117B1 (fr) 2009-11-27 2009-11-27 Procede de nettoyage d'un reservoir de stockage d'eau d'une machine a laver et machine a laver associee

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EP2327349B1 true EP2327349B1 (de) 2020-03-11

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ITTO20110943A1 (it) * 2011-10-19 2013-04-20 Indesit Co Spa Macchina lavastoviglie
ITTO20110944A1 (it) * 2011-10-19 2013-04-20 Indesit Co Spa Metodo per controllare il funzionamento di una lavastoviglie
CN104302223B (zh) * 2012-03-30 2017-09-19 伊莱克斯家用产品公司 洗碗机以及操作洗碗机的方法
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FR2993166B1 (fr) * 2012-07-12 2015-01-09 Fagorbrandt Sas Procede de commande en fonctionnement d'une machine a laver et machine a laver associee
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CN104988701A (zh) * 2015-04-28 2015-10-21 无锡小天鹅股份有限公司 洗衣机
CN104963174B (zh) * 2015-05-29 2018-04-20 无锡小天鹅股份有限公司 洗衣机以及排水阀
KR102373181B1 (ko) 2017-05-26 2022-03-11 삼성전자주식회사 식기 세척기
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FR2953117B1 (fr) 2012-02-17
FR2953117A1 (fr) 2011-06-03

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