EP2327349A1 - 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
EP2327349A1
EP2327349A1 EP10192562A EP10192562A EP2327349A1 EP 2327349 A1 EP2327349 A1 EP 2327349A1 EP 10192562 A EP10192562 A EP 10192562A EP 10192562 A EP10192562 A EP 10192562A EP 2327349 A1 EP2327349 A1 EP 2327349A1
Authority
EP
European Patent Office
Prior art keywords
water
storage tank
water storage
cleaning
washing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10192562A
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English (en)
French (fr)
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EP2327349B1 (de
Inventor
Daniel Serve
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.)
Groupe Brandt SAS
Original Assignee
FagorBrandt SAS
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Filing date
Publication date
Application filed by FagorBrandt SAS filed Critical FagorBrandt SAS
Publication of EP2327349A1 publication Critical patent/EP2327349A1/de
Application granted granted Critical
Publication of EP2327349B1 publication Critical patent/EP2327349B1/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 adapted to implement 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 more particularly applies to washing machines for domestic use comprising a water storage tank from at least one washing and / or rinsing and / or drying phase for reuse during a cycle of operation following implemented by said washing machine.
  • the water contained in the tank is emptied by gravity into the wash tank when opening a valve connecting two water circulation pipes the tank wash tank.
  • the tank is cleaned and drained automatically with mains water flowing through a network inlet pipe, a water softener, said tank, a valve and then a a water outlet pipe opening into a sump of the washing tub.
  • the tank is cleaned during each water filling phase of the network 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 disadvantage of modifying the hydraulic water distribution circuit of a conventional washing machine so as to systematically introduce water from the network through the tank and not directly into the wash tub.
  • the tank is cleaned only with water coming from the network during a filling of said tank with water after evacuation of the water contained therein so as to rinse said tank with water from the tank. network.
  • the present invention aims to solve the aforementioned drawbacks and to provide a method of cleaning a water storage tank of a washing machine for effectively cleaning said tank by a simplified hydraulic water distribution circuit while by minimizing the cost of obtaining said machine and maintaining the hydraulic water distribution circuit of a washing machine without said reservoir and to propose an associated washing machine.
  • the present invention aims, in a first aspect, a method of cleaning a water storage tank of a washing machine, said washing machine comprising a washing tank, a hydraulic distribution circuit water comprising a water circulation pump, said water storage tank being supplied with water from at least one washing and / or rinsing and / or drying phase for reuse during a subsequent operating cycle implemented by said machine.
  • the method of cleaning a water storage tank of a washing machine makes it possible to clean said water storage tank by filling it with a cleaning liquid to a connecting overflow zone.
  • said tank to the wash tub, wherein said overflow area defining a maximum water level within 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 circulating inside the water storage tank is overflowed into the water tank. washing. And then, the amount of cleaning liquid remaining in the water storage tank below the overflow area is emptied by gravity into the wash tub by the valve held in the open position and through the circulation pump. water at a standstill.
  • the method of cleaning a water storage tank of a washing machine makes it possible to guarantee the cleaning of all the internal surfaces of said tank in contact with the water of recovery coming from minus a washing and / or rinsing and / or drying phase.
  • 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 used by said machine, or by the addition of sequences at the end of the washing and / or rinsing phases of an operating cycle implemented by said machine.
  • the method of 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 product and / or disinfection.
  • said steps of circulating a cleaning liquid and returning said cleaning liquid in said overflow wash tank are implemented in a loop for a predetermined time.
  • the cleaning liquid introduced during the first filling of the water storage tank to the overflow zone connecting said tank to the washing tank is reused and reintroduced into said tank by means of the water circulation pump. so as to circulate said cleaning liquid between the water storage tank and the wash tank and said wash tank and said tank for a predetermined time.
  • the present invention aims, according to a second aspect, a washing machine comprising an electronic card which comprises a control unit.
  • said control unit is adapted to implement the method of cleaning a water storage tank according to the invention.
  • This domestic washing machine has advantages similar to those described above with reference to the method of cleaning a water storage tank of a washing machine according to the invention.
  • This washing machine can be a domestic dishwashing machine, or a domestic washing machine, or a domestic washing and drying machine.
  • the present invention applies to all types of washing apparatus, including front loading and loading from above the dishes or laundry.
  • a dishwashing machine 1 comprises a washing tub 2 whose front face 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 tub 2 makes it possible to seal an opening made in the washing tub 2.
  • This washing tub door 2 can thus be movable between a closed position in which it closes the opening, in a sealed manner, and an open position.
  • the washing tub door 2 is pivotally mounted about an axis of rotation integral with the bodywork 3 of the dishwashing machine 1.
  • the washing tank 2 comprises at least one water spraying means 4a, 4b of a washing bath and / or rinsing on the dishes.
  • the washing tub 2 comprises an upper water spraying reel 4b and a lower spraying reel 4a.
  • a wash and / or rinse bath water is defined as water for cleaning the dishes and circulating in a hydraulic water distribution circuit 5 of a dishwashing machine 1.
  • the origin of the water of a washing and / or rinsing bath is a water coming from the supply network of the dishwashing machine 1.
  • the washing tank 2 comprises an upper wall 2a, side walls 2b, a bottom wall 2c and a bottom wall 2d.
  • the bodywork 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 of the washing and / or rinsing baths of the different phases of a cycle. of cleaning.
  • At least one dish rack (not shown) is mounted inside the washing tub 2.
  • a dish rack may be located in the upper portion of the wash tub 2 and referred to as an upper basket, and a dish rack may be located in the lower portion of the wash tub 2 and referred to as a 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 of a washing bath and / or rinsing in the washing tub 2.
  • the dishwashing machine 1 operates so as to minimize the washing bath and / or rinse retained in a sump 7 formed in the bottom wall 2d of the washing tub 2.
  • the water circulation pump 6 draws water from the washing and / or rinsing bath into the sump 7 in order to circulate the water of 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 may also include a drain pump 24 of the wastewater of the washing and / or rinsing bath.
  • the drain pump 24 draws the waste water from the washing and / or rinsing bath into the washing tank 2, and in particular into the sump 7, 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 resistor.
  • the dishwashing machine 1 comprises control means (not shown), and in particular at least one microcontroller, for unfolding predetermined operating cycles.
  • the washing machine 1 comprises a water storage tank 8 originating from at least one washing and / or rinsing and / or drying phase for reuse during a subsequent operating cycle carried out 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 of water. washing 2 by operating said water circulation pump 6 and discharging water from said water storage tank 8 to said washing tank 2 by gravity through said water circulation pump 6 to shutdown.
  • 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 one part of this water, then reuse at least a portion of this water during a subsequent 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 water consumption of an operating cycle implemented by said dishwashing machine 1.
  • the hydraulic water distribution circuit 5 exploits the water circulation pump 6 to supply water to at least one water spraying means 4a, 4b in the washing tub 2 and to supply water to the storage tank 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 spraying means 4a, 4b is not modified with respect to a conventional washing machine.
  • the part 5a of the hydraulic water distribution circuit 5 for supplying water to the water storage tank 8 and emptying the latter is connected to the part 5b of the hydraulic water distribution circuit 5 of the water machine. washing the dishes 1 supplying at least one water spraying means 4a, 4b without modifying this part 5b so as to standardize the hydraulic water distribution circuit 5 dishwashing machines 1 with or without storage tank water 8.
  • the hydraulic water distribution circuit 5 of a dishwashing machine 1 makes it possible to reduce the number of water drain pipes, to preserve a structure and positioning the members within the washing machine body 1 without 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 allows it to be used with or without the water storage tank 8 according to the wishes of the user.
  • the dishwashing machine 1 connected or not to the water storage tank 8 may be used such as a conventional washing machine if the user wishes.
  • the water recovery device 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.
  • 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 the 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 according to the connection or not of the water storage tank 8 with said dishwashing machine 1.
  • the water storage tank 8 When using a water storage tank 8 on a dishwashing machine 1, the water storage tank 8 is fed by a water circulation pipe 9 connected downstream of the water pump. circulation of water 6 so that said water circulation pump 6 supplies water to said reservoir 8 and / or at least one water spraying means 4a, 4b.
  • the water circulation pump 6 being at a standstill is adapted to allow a flow of water to flow 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 to guarantee 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.
  • water 5 of said washing machine feeding one or more water spraying means 4a, 4b.
  • Water from a washing and / or rinsing and / or drying bath supplying the water storage tank for reuse during a subsequent operating cycle carried out by the dishwashing machine 1 is the heated water, and preferably the water from the last of the rinsing bath and / or the water which has been used during a condensation drying phase.
  • 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 pump 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 the water circulation pump 6. And the water circulation pump 6 is located between the washing tub 2 and the valve 10.
  • the valve 10 located between the water storage tank 8 and the water circulation pump 6 can be electrically controlled or else by the pressure in the hydraulic water distribution circuit 5.
  • the water storage tank 8 and said at least one water spraying means 4a, 4b are fed by a single water circulation pump 6.
  • the water storage tank 8 can be fixed to the bodywork 3 of the dishwashing machine 1 and / or to the washing tub 2. This water storage tank 8 can also be placed inside or outside the bodywork 3 of the dishwasher 1.
  • the positioning and / or fixing of the wash water tank and / or rinse with the washing machine are not 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 the body when it is not put into operation.
  • centrifugal pump makes it possible to overcome the drawbacks of positive displacement pumps where the water is compressed to be put in displacement causing the operation of these volumetric pumps continuously to send water in only one direction or the passage water in other water drain pipes to send water in an opposite direction.
  • centrifugal pump for the circulating water 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 centrifugal pump. volumetric 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 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 rotating disk inside the valve makes it possible to seal or release water passage openings so as to control the water supply of each of the members 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 carried out 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 to said at least one water spraying means 4a, 4b be closed.
  • control means of the dishwashing machine 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 to 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 may comprise more than two positions so as to supply water on the one hand alternately the water storage tank 8 and the said at least one means spraying water 4a, 4b and simultaneously simultaneously the water storage tank 8 and said at least one water spraying means 4a, 4b.
  • the water contained in the washing tank 2 originating 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 spraying 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 means of distribution water 12 is in a fourth position depending on the number of positions of said water distribution means 12.
  • the water circulation pipe 9 connected to the water storage tank 8 is connected directly to a water distribution means, wherein said water distribution means supplies water to either said at least one water spraying means 4a, 4b is 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 ensuring a water supply exclusively either to the water storage tank 8 or to the said at least one water spraying means 4a. , 4b.
  • the water distribution means may be a hydraulic component comprising a moving element so as to dispense 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 carried out electrically through the control means of the dishwashing machine 1.
  • the opening of the valve 10 is carried out by the pressure of the water in the hydraulic water distribution circuit 5 connected with the operation of the water circulation pump 6 when the water distribution means 12 is in the closed position.
  • the valve 10 may comprise a resilient return element of a shutter member (not shown) for closing the water passage inside said valve 10 when the pressure in the pipe 25 of the hydraulic distribution circuit water 5 exerted by the water circulation pump 6 is less than a predetermined value.
  • the pressure in the pipe 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 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 pipe 25 of the hydraulic water distribution circuit 5 exceeds the predetermined value allowing the displacement of the shut-off element of the valve 10, 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 shutter element back to the initial position as soon as the pressure in the pipe 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 thereof as soon as the valve 10 is closed and the water spraying means 4a, 4b can be supplied with water. water by the displacement of the water distribution means 12 in the water supply position of said water spraying means 4a, 4b and the operation of the water circulation pump 6.
  • the valve 10 is electrically opened by the control means of the dishwashing machine 1 so as to evacuate 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 to the water distribution means 12 and 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 performed on the classic washing machines.
  • the water filling of the water storage tank 8 is ensured by the water circulation pump 6 and made by a water passage opening 14 formed in the lower part of said water storage tank 8.
  • the water filling of the water storage tank 8 can be carried out chronologically. This method of filling the water storage tank 8 with water time is controlled by a period of time for putting the water circulation pump 6 into operation through the control means of the dishwashing machine 1, as for example a microcontroller.
  • the operating time period of the water circulation pump 6 is dependent on the water flow rate of said pump 6 and the volume of the water storage tank 8.
  • the water filling of the water storage tank 8 to a predetermined maximum water level in said tank 8 is detected by the change in the speed of the drive motor of the pump. water circulation 6 due to the defusing of 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 make an overflow of water overflow of said water storage tank 8 in said tank of water. washing 2 and / or to realize a device for venting 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 situated 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 to the water storage tank 8. fluidically 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 tub 2 by an air and / or water passage 17.
  • the water storage tank 8 may comprise a water filling detection means (not shown) of said water storage tank 8.
  • the water filling detection means may be for example a high level detector of the pressure switch type, or even with direct contact with float.
  • the type of water filling detection means of the water storage tank is not 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 tank is reached.
  • water storage 8 is reached and detected by said water filling detecting means and closing the valve 10 so as to contain water 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 water discharge from the water storage tank 8 to the washing tank 2 is carried out 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 a flow of water from the water storage tank 8 into 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 a flow of water from the water storage tank 8 into the washing tank 2, and in particular the sump 7, through the water circulation pipe 9 and the water circulation pump 6.
  • the water discharge from the water storage tank 8 to the washing tank 2 is gravity and does not require any drive 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 reservoir 8 and secondly to drain said reservoir 8.
  • the sump 7 of the washing tank 2 comprises a water passage opening 19 to a water circulation pump 6 and a water passage opening 20 to a drain pump 24.
  • the water circulation pump 6 is connected at the inlet to a water circulation pipe 21 with the sump 7 of the washing tank 2, and at the outlet to at least one water circulation pipe 13a, 13b with a or a plurality of water spraying means 4a, 4b disposed in the washing tank 2, and 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 tub 2 is static.
  • the water discharge of the water storage tank 8 is ensured by the valve 10 and made 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 the opening of the valve 10 for a predetermined duration so that the water of said tank 8 flows by gravity into the washing tank 2 when the pump of water circulation 6 is at a standstill.
  • 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 pre-programmed control means of the dishwashing machine 1 during the water recovery for a subsequent operating cycle of said machine 1.
  • the emptying of the water storage tank 8 can also be controlled by a user or by means of control of the dishwashing machine 1 so as to evacuate water from said tank 8 to a wastewater network, in particular before or after an extended 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 the water of the washing tank 2, in particular of the sump 7, following the passage of said water in the filtration device 18 to supply water to the water storage tank 8 so as to avoid fouling of said tank 8 and part 5a of the hydraulic water distribution system 5.
  • the filtration device 18 is housed at least partially inside the sump 7 of the washing tank 2.
  • the filtration device 18 may comprise 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 insulation (not shown).
  • the thermal insulation covering the water storage tank 8 may consist of one or more layers made from a single material or 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 a better conservation of the heat energy of the water of at least one washing and / or rinsing and / or drying phase for reuse during a period of time. following operating cycle used by the dishwashing machine 1.
  • the method of 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 up to a zone overflow connecting said tank 8 to the washing tank 2, wherein said overflow area 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 a forced circulation of a cleaning liquid. Then, the cleaning liquid circulating inside the water storage tank 8 is overflowed into the washing tub 2. Then, the amount of cleaning liquid remaining in the water storage tank 8 below the overflow zone is emptied by gravity into the washing tub 2 by the valve 10 held in the open position and through the water circulation pump 6 at a standstill.
  • said at least one opening 15 of the water storage tank 8 in fluid communication with the washing tub 2 allowing the return of the cleaning liquid in said washing tub 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 tub 2 by a pipe of passage of air and / or water 17.
  • the method of cleaning a water storage tank 8 of a washing machine 1 makes it possible to guarantee the cleaning of all the internal surfaces of said tank 8 in contact with the water of recovery 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 maintain the hydraulic water distribution circuit of a washing machine without said tank 8 .
  • the cleaning liquid of the water storage tank 8 comprises at least mains water fed into the washing tub 2 of the washing machine 1.
  • the water of the network can be mixed with a cleaning product so that to form the cleaning liquid.
  • the cleaning product may for example be a detergent.
  • the water of the network constituting at least partly 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 in the washing tub 2 by overflow are implemented in a loop for a predetermined period D.
  • the cleaning liquid introduced during the first filling of the water storage tank 8 to the overflow area connecting said tank 8 to the washing tub 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 and then said washing tank 2 and said tank 8 for a predetermined period D.
  • the predetermined duration D of repetition of the stages of circulation of a cleaning liquid and return of the cleaning liquid in the washing tub 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 return of the cleaning liquid in the overflow wash tank is in no way limiting and may be different.
  • the cleaning method of the water storage tank 8 of the washing machine 1 may be implemented either as an operating cycle dedicated to the cleaning of said tank 8 implemented by said machine 1, or by the addition of sequences at the end of the washing and / or rinsing phases of an operating cycle implemented by said machine 1.
  • the cleaning method of 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 tank 8, such as for example a cleaning product and / or disinfection.
  • the method of cleaning the water storage tank 8 of the washing machine 1 may comprise a step of heating the cleaning liquid comprising water and optionally a cleaning and / or disinfecting product.
  • the step of circulating a cleaning liquid is carried out following the closure of the water distribution means 12, where the water storage tank 8 is connected to the hydraulic circuit water supply 5 upstream of said water distribution means 12, and wherein 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 water spraying means 4a, 4b in the washing tub 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 the tank with cleaning liquid 8 and blocking the supply of cleaning liquid from said at least one water spraying means 4a, 4b for cleaning said tank 8.
  • the cleaning liquid contained in the washing tub 2 is directed only towards said at least one water spraying means 4a, 4b when the water distribution means 12 is in a second position of water. so as to supply cleaning liquid with said at least at least one water spraying means 4a, 4b and blocking the supply of cleaning liquid from said tank 8 for cleaning the washing tub 2.
  • the water distribution means 12 comprises at least two positions so as to supply cleaning liquid either the water storage tank 8 or said at least one water spraying means 4a, 4b.
  • the cleaning liquid filling of the water storage tank 8 is carried out 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 to said at least one water spraying means 4a , 4b is closed.
  • control means of the dishwashing machine such as, for example, a microcontroller
  • the water circulation pump 6 sends the liquid cleaning in the water circulation pipe 9 and then in the water storage tank 8 so as to fill the latter with cleaning liquid.
  • the water distribution means 12 may comprise more than two positions so as to supply cleaning liquid on the one hand alternately the water storage tank 8 and said at least one water spraying means 4a, 4b and on the other hand simultaneously the reservoir water storage 8 and said at least one water spraying means 4a, 4b.
  • the cleaning liquid contained in the washing tank 2 can also be distributed between the water storage tank 8 and the 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 depending on the number of positions of said water distribution means 12.
  • the step of circulating a cleaning liquid is carried out following the activation of a water distribution means in a water filling position of the storage tank.
  • water 8 wherein said water circulation duct 9 connected to said water storage tank 8 is connected to said water supply means, and wherein said water supply means selects the supply of cleaning liquid by said water circulation pump 6 to said water storage tank 8 or at least one water spraying means 4a, 4b in the washing tank 2.
  • the water circulation duct 9 is connected directly to the water distribution means ensuring a supply of cleaning liquid exclusively either to the water storage tank 8 or to said at least one water spraying means. water 4a, 4b.
  • the cleaning liquid filling of the water storage tank 8 is ensured by the water circulation pump 6 and made 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 tub 2.
  • the water circulation pump 6 draws cleaning liquid from the washing tank 2, in particular from the sump 7, following the filtration of said cleaning liquid to supply the cleaning liquid with the water storage tank 8. so as to avoid fouling of said tank 8 and part 5a of the hydraulic water distribution circuit 5.
  • the cleaning liquid returned to the washing tub 2 by overflow from the water storage tank 8 is filtered again to be reused during the step of circulating the cleaning liquid through the pipe water circulation 9 and said water storage tank 8 by the pump of water circulation 6.
  • the water filtration device 18 of the hydraulic water distribution circuit 5 situated 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 of water 8.
  • the cleaning liquid supplying the water storage tank 8 is filtered by the filtration device 18 since the filtration device 18 is located upstream of the water circulation pump 6.
  • the water circulation pump 6 samples 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 for supplying cleaning liquid 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 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 said water storage tank 8 by the circulation pump. 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 and 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 non-evacuated micro-grime during steps of circulating a cleaning liquid and returning the cleaning liquid in the washing tub 2 by overflow.
  • the rinsing liquid of the water storage tank 8 comprises at least mains water fed into the washing tub 2 of the washing machine 1.
  • the water of the network can be mixed with a rinsing product of a kind to form the rinsing liquid.
  • the water of the network constituting at least partly the rinsing liquid can be used previously during a rinsing phase of a cycle of operation of the washing machine 1.
  • the step of rinsing the water storage tank 8 with the rinsing liquid can be carried out 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 in the washing tub 2 by overflow.
  • the method comprises a step of evacuating the rinsing liquid from the water storage tank 8 to the washing tub 2 by gravity through the valve 10 in the open position and through the water circulation pump 6 at a standstill.
  • 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 cleaning process of the storage tank of the washing machine 1. water 8 or 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 greater than a predetermined threshold.
  • At least one of the steps of discharging a cleaning liquid and / or rinsing water storage tank 8 to the washing tank 2 by gravity is followed by a step of draining said liquid from cleaning and / or rinsing from said washing tank 2 to a wastewater network by means of the drain pump 24.
  • each of the steps of discharging a cleaning liquid and / or rinsing the water storage tank 8 to the washing tub 2 by gravity is followed by a step of draining a cleaning and / or rinsing liquid from said washing tub 2 to a waste water network by means of the drain pump 24.
  • the cleaning process of the water storage tank 8 may also comprise a step of inert storage of the cleaning liquid in the water storage tank 8 implemented before and / or after the return step. said cleaning liquid in the washing tub 2 by overflow so as to bring said cleaning liquid into contact with the walls of said water storage tank 8.
  • the method of cleaning the water storage tank 8 comprises a pause phase where the water storage tank 8 is filled with cleaning liquid so as to let said cleaning liquid act in contact with the walls of said tank of water. water storage 8 and facilitate the cleaning of the latter.
  • the step of inert storage of the cleaning liquid in the water storage tank 8 is carried out following the step of circulating said cleaning liquid through the water circulation pipe 9 and 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 returning said cleaning liquid to the washing tub 2 by overflow.
  • the step of inert storage of the cleaning liquid in the water storage tank 8 can be carried out either from the beginning of a cleaning cycle of said water storage tank 8 or during the repetition of the steps of circulating said cleaning liquid and return of said cleaning liquid in the washing tub 2 by overflow.
  • the washing machine 1 comprises an electronic card (not shown) which comprises a control unit adapted to implement the cleaning method of 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 reservoir storing water 8 by the cleaning liquid and rinsing said tank with the rinsing liquid, as previously described.
  • the method of cleaning a water storage tank of a washing machine makes it possible to clean said water storage tank by filling it with a cleaning liquid until an overflow area connecting said tank to the wash tank, wherein said overflow area defining a maximum water level within 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 circulating inside the water storage tank is overflowed into the wash tub. And then, the amount of cleaning liquid remaining in the water storage tank below the overflow area is emptied by gravity into the wash tub by the valve held in the open position and through the circulation pump. water at a standstill.
  • the washing machine implementing the method of cleaning a water storage tank according to the invention may 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-storage material so as to recover the heat energy of the water from at least one washing and / or washing bath and / or drying.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Cleaning By Liquid Or Steam (AREA)
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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EP2327349A1 true EP2327349A1 (de) 2011-06-01
EP2327349B1 EP2327349B1 (de) 2020-03-11

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EP2570069A1 (de) * 2011-09-13 2013-03-20 Miele & Cie. KG Verfahren zum Betreiben eines Spülautomaten mit einem Spülflotten-Speicherbehälter
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
WO2013143619A1 (en) * 2012-03-30 2013-10-03 Electrolux Home Products Corporation N.V. Dishwasher and method of operating dishwasher
EP2684507A1 (de) * 2012-07-12 2014-01-15 FagorBrandt SAS Steuerverfahren einer laufenden Waschmaschine, und entsprechende Waschmaschine
EP2684505A1 (de) * 2012-07-12 2014-01-15 FagorBrandt SAS Wasch- und/oder Spülwasserbehälter einer Waschmaschine, und entsprechende Waschmaschine
FR2993166A1 (fr) * 2012-07-12 2014-01-17 Fagorbrandt Sas Procede de commande en fonctionnement d'une machine a laver et machine a laver associee
CN104963174A (zh) * 2015-05-29 2015-10-07 无锡小天鹅股份有限公司 洗衣机以及排水阀
CN104988701A (zh) * 2015-04-28 2015-10-21 无锡小天鹅股份有限公司 洗衣机
CN105705071A (zh) * 2013-11-29 2016-06-22 伊莱克斯电器股份公司 洗碗机
US10939794B2 (en) 2017-05-26 2021-03-09 Samsung Electronics Co., Ltd. Dish washer
CN113026297A (zh) * 2019-12-09 2021-06-25 重庆海尔洗衣机有限公司 一种自清洁洗衣机及其控制方法
CN114711691A (zh) * 2022-04-13 2022-07-08 添可智能科技有限公司 脏污回收容器及其控制方法、装置、清洁设备和存储介质
CN116043488A (zh) * 2023-02-16 2023-05-02 广东善思科技有限公司 清洁设备的控制方法

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EP2570069A1 (de) * 2011-09-13 2013-03-20 Miele & Cie. KG Verfahren zum Betreiben eines Spülautomaten mit einem Spülflotten-Speicherbehälter
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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
EP2583613A1 (de) * 2011-10-19 2013-04-24 Indesit Company S.p.A. Geschirrspülmaschine
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WO2013143619A1 (en) * 2012-03-30 2013-10-03 Electrolux Home Products Corporation N.V. Dishwasher and method of operating dishwasher
FR2993166A1 (fr) * 2012-07-12 2014-01-17 Fagorbrandt Sas Procede de commande en fonctionnement d'une machine a laver et machine a laver associee
FR2993163A1 (fr) * 2012-07-12 2014-01-17 Fagorbrandt Sas Procede de commande en fonctionnement d'une machine a laver et machine a laver associee
FR2993159A1 (fr) * 2012-07-12 2014-01-17 Fagorbrandt Sas Reservoir d'eau de lavage et/ou de rincage d'une machine a laver et machine a laver associee
EP2684505A1 (de) * 2012-07-12 2014-01-15 FagorBrandt SAS Wasch- und/oder Spülwasserbehälter einer Waschmaschine, und entsprechende Waschmaschine
EP2684507A1 (de) * 2012-07-12 2014-01-15 FagorBrandt SAS Steuerverfahren einer laufenden Waschmaschine, und entsprechende Waschmaschine
US10182698B2 (en) * 2013-11-29 2019-01-22 Electrolux Appliances Aktiebolag Dishwasher
CN105705071A (zh) * 2013-11-29 2016-06-22 伊莱克斯电器股份公司 洗碗机
US20160270627A1 (en) * 2013-11-29 2016-09-22 Electrolux Appliances Aktiebolag Dishwasher
CN104988701A (zh) * 2015-04-28 2015-10-21 无锡小天鹅股份有限公司 洗衣机
CN104963174A (zh) * 2015-05-29 2015-10-07 无锡小天鹅股份有限公司 洗衣机以及排水阀
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
US10939794B2 (en) 2017-05-26 2021-03-09 Samsung Electronics Co., Ltd. Dish washer
CN113026297A (zh) * 2019-12-09 2021-06-25 重庆海尔洗衣机有限公司 一种自清洁洗衣机及其控制方法
CN114711691A (zh) * 2022-04-13 2022-07-08 添可智能科技有限公司 脏污回收容器及其控制方法、装置、清洁设备和存储介质
CN114711691B (zh) * 2022-04-13 2023-08-01 添可智能科技有限公司 脏污回收容器及其控制方法、装置、清洁设备和存储介质
CN116043488A (zh) * 2023-02-16 2023-05-02 广东善思科技有限公司 清洁设备的控制方法

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EP2327349B1 (de) 2020-03-11
FR2953117A1 (fr) 2011-06-03

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