EP1982630B1 - Method of cleaning pieces of crockery - Google Patents

Method of cleaning pieces of crockery Download PDF

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Publication number
EP1982630B1
EP1982630B1 EP08103512A EP08103512A EP1982630B1 EP 1982630 B1 EP1982630 B1 EP 1982630B1 EP 08103512 A EP08103512 A EP 08103512A EP 08103512 A EP08103512 A EP 08103512A EP 1982630 B1 EP1982630 B1 EP 1982630B1
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EP
European Patent Office
Prior art keywords
water
washing
phase
bath
dishes
Prior art date
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Active
Application number
EP08103512A
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German (de)
French (fr)
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EP1982630A1 (en
Inventor
Jacques Bretaud
Thierry Desmaillet
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.)
FagorBrandt SAS
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FagorBrandt SAS
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Application filed by FagorBrandt SAS filed Critical FagorBrandt SAS
Priority to PL08103512T priority Critical patent/PL1982630T3/en
Publication of EP1982630A1 publication Critical patent/EP1982630A1/en
Application granted granted Critical
Publication of EP1982630B1 publication Critical patent/EP1982630B1/en
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    • 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
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • 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
    • A47L2601/00—Washing methods characterised by the use of a particular treatment
    • A47L2601/02—Pressurised cleaning liquid delivered by a pump

Definitions

  • the present invention relates to a method of cleaning dishwashing articles having uncooked soiling, especially glasses or cups in a washing machine and drying the dishes so as to optimize the cleaning cycle of slightly dirty dishes and to avoid damaging these dishes, while minimizing the duration of said cleaning cycle.
  • the invention relates to machines for washing and drying dishes, particularly domestic machines.
  • the washing and drying machines present on the market include a fragile cleaning program to limit the mechanical stress and chemical attack on the dishes.
  • the programs associated with these cleaning cycles are adapted accordingly and require relatively long program times and wash, rinse and dry times.
  • the nature of the dirt to be removed is varied and requires a mechanical action with a high pressure of water jets and a chemical action with a detergent.
  • a document is also known US-A-4,277,290 which describes a dishwashing machine employing an operating process comprising a prewarming phase of a washing bath, said washing bath being contained in a vessel without load of dishes, and a dishwashing phase continued loading said dishes into the tank.
  • the present invention aims to solve the aforementioned drawbacks and to provide a method of cleaning dishes with uncooked dirt, including glasses or cups, in a washing machine and dry the dishes, and a washing machine and drying dishes associated with this process, to optimize energy and water consumption without damaging the dishes.
  • this cleaning process meets the expectations of the user to clean the dishes in a short period of time.
  • the present invention is directed to a method of cleaning dishwashing articles having uncooked soiling, especially glasses or cups, in a washing machine and drying dishes, said washing machine and drying dishes comprising a tank closed by a door on the front face, said tank being ventilated by at least one fan, said washing machine and drying dishes comprising at least one heating means for heating the water of a washing and rinsing bath.
  • the cleaning process is targeted at specific pieces of crockery that correspond to restrictive pieces of crockery to be cleaned.
  • the pieces of dishes to clean are restrictive because they are fragile and require specific cleaning conditions to achieve performance in accordance with the expectations of users.
  • the cleaning conditions according to the invention are adapted so as not to damage the dishes.
  • Said dishes are those containing a liquid during use, such as glasses, cups, ramekins and cutlery associated. These dishes are not soiled during use. The soiling may come in particular from the liquid contained in said dish pieces, fingerprints, traces of makeup, or cakes appetizers. The stains are recent and have not dried for a long time after the use of dishes, which may be more than two days.
  • the cleaning process makes it possible to quickly and efficiently clean dishes when receiving people by optimizing the consumption of water and energy.
  • the short duration of such a method of cleaning dishware without the use of a washing product makes it possible to reuse said pieces of dishware during the same reception.
  • the cleaning process effectively cleans the dishes without damaging them by a suitable mechanical action and / or chemical aggression.
  • the chemical aggression of the dishes is greatly limited by the non-use of a washing product during the wash water circulation phase.
  • Dirt on these pieces of dishes are less stubborn and adherent than other soils corresponding to different uses, especially when cooking food.
  • the targeted dirt is limited in particular to the liquid contained in the dishes, fingerprints, traces of makeup and cakes appetizers.
  • the addition of a pre-heating phase of the wash bath water before the heating phase of the wash bath water and the wash bath water circulation allows a significant decrease in the cycle time of cleaning while guaranteeing the cleaning performance of soiling.
  • the pressure of the water jets is limited in a range extending between 110 and 140 mbar, and preferably of the order of 120 mbar.
  • the duration of the cleaning cycle, the mechanical action and the temperature can then be reduced during the washing, rinsing and drying phases because the soils are not very adherent to the dishes.
  • the cleaning method according to the invention makes it possible to clean dishes containing a liquid and being lightly soiled, the stains of which consist essentially of the liquid contained in the dishes, fingerprints , traces of make-up and aperitif cakes.
  • Said method makes it possible to clean dishes according to parameters associated with the washing and rinsing phases according to water spraying sequences on said adapted dishes and with limited water jet pressure.
  • the cleaning program comprising the sequence of steps defined above makes it possible to obtain efficient cleaning and drying results, and to avoid any damage to so-called fragile dishware. This succession of steps reduces the cleaning cycle time of the dishes.
  • the preheating phase is systematic for the accomplishment of said cleaning program. Said preheating phase makes it possible to obtain a better cleaning performance of the stains and drying of the dishes.
  • the introduction of the dishes in the tank following the prewarming phase of the wash bath reduces the duration of the cleaning cycle.
  • the steps of the method according to the invention make it possible to immediately and efficiently clean the dishes.
  • the cleaning cycle is active as soon as the loading of the pieces of dishes into the tank and the closing of the door of said tank are complete.
  • the temperature of the washing bath at the end of the heating and circulation phase of the wash bath water is sufficient to overcome any foam problem that may be caused by the introduction of a rinsing product into a bath having a temperature too low, that is to say lower than 40 ° C.
  • the steps of said method are carried out with a single washing and rinsing bath.
  • the water consumption is limited to a minimum amount of water to carry out the washing and rinsing phases of the process.
  • the use of a single bath for washing and rinsing also makes it possible to reduce the duration of the cleaning cycle by avoiding heating the water for each of the washing and rinsing baths.
  • a washing machine and drying dishes 1 comprises a tank 2 whose front face 3 is closed by a door 4.
  • the tank 2 is surrounded by a housing 5 (partially shown) comprising an upper wall 6, side walls 7, a bottom wall 8 and a bottom wall 9.
  • Said tank 2 can be divided into at least two washing zones 10 and 11 one above the other separated by at least one partition wall 12 and said washing areas 10 and 11 communicating with each other.
  • Each washing zone 10 and 11 comprises at least one water spraying means of a washing and rinsing bath 13a and 13b on the dishes.
  • a water of a washing and rinsing bath is defined as water allowing the cleaning of the dishes and circulating in a hydraulic circuit 15 of a washing machine and drying the dishes 1.
  • the origin of the water a washing and rinsing bath is a water coming from the feeding network of the washing machine and drying the dishes 1.
  • the tank 2 comprises an upper wall 16, side walls 17, a bottom wall 18 and a bottom wall 19.
  • the housing 5 of the washing machine and drying the dishes 1 is adapted to house the tank 2.
  • Said tank 2 is adapted in particular to contain the wash bath water and rinse phases of a cleaning cycle.
  • Said washing zones 10 and 11 described in this embodiment are defined as the first washing zone 10 being located in the upper part of the tank 2 and the second washing zone 11 being located in the lower part of the tank 2.
  • Each of said washing zones 10 and 11 has a front opening allowing access thereto.
  • a basket of dishes 14a and 14b is mounted in each washing zone 10 and 11.
  • the basket of dishes 14a located in the upper part of the tank 2 is designated by upper basket and for the basket dishwashing 14b of the lower part of the tank 2 by lower basket.
  • the dish baskets 14a and 14b can be pushed and removed from the washing areas 10 and 11 by sliding them inside the tank 2 of the washing machine and drying the dishes 1 at the end of a cycle of washing. cleaning for unloading the dishes at the beginning of the cleaning cycle for loading the dishes.
  • This washing and drying machine 1 comprises at least two washing zones 10 and 11 and is provided with a common pump 20 for the circulation of the washing bath and rinsing water in one or other of the zones. 10 and 11 washing or all of the washing zones 10 and 11 simultaneously.
  • the washing and drying machine 1 selectively or concurrently activates one or more washing zones 10 and 11 if the dirty dishes are loaded into a washing zone 10 and 11 or both.
  • a second pump (not shown) allows the tank 2 to be emptied.
  • Control means 21 make it possible to unwind independent or identical predetermined cleaning programs for each of said washing zones 10 and 11.
  • the door 4 of tank 2 makes it possible to close an opening made in the tank 2.
  • This door 4 of tank 2 can thus be movable between a closed position in which it closes the opening, in a sealed manner, and an open position.
  • the tank door 4 is pivotally mounted about an axis of rotation integral with the casing 5 of the washing machine and drying dishes 1.
  • This washing machine and drying dishes 1 comprises a door 4 formed in particular of two parts 22 and 23.
  • the first part 22 of the door 4 corresponds to the external facade visible by the customer.
  • Said facade 22 may also be a panel adapted to receive a piece of furniture of the kitchen.
  • the second part 23 of the door 4 is the counter door, that is to say the inner wall of the door 4 closing the tank 2.
  • the baskets 14a and 14b may include facades 24 placed on the front walls of said baskets 14a and 14b vis-à-vis the counter door 23 of the door 4.
  • a first washing and rinsing water spraying means 13a and a second washing and rinsing water spraying means 13b are respectively disposed in said first washing zone 10 and said second washing zone 11 for spraying the water. dirty dishes loaded in the crockery baskets 14a and 14b.
  • the dishwashing and drying machine 1 comprises a first spray means 13a associated with the first wash zone 10 comprising a rotatable spray arm disposed in the lower portion of the first wash zone 10. for spraying the wash and rinse bath water on the dishes in a bottom-up direction and a spray nozzle 26 assembled on the upper wall 16 of the tank 2 of the first washing zone 10 to spray the water wash and rinse the dishes in a direction from top to bottom.
  • a second spraying means 13b associated with the second washing zone 11 has a rotating spray arm 27 disposed in the lower part of the second washing zone 11 for spraying the washing and rinsing water on the dishes in a direction from bottom to top and a spray nozzle 28 connected to the partition wall 12.
  • the cleaning of the crockery can be carried out independently in one of said washing zones 10 and 11 or simultaneously with all of the washing zones. washing 10 and 11.
  • the washing and drying machine 1 operates in such a way as to minimize the volume of water in the washing and rinsing bath retained in a bowl 29 formed in the bottom wall 19 of the tank 2 from the first and second spray means 13a and 13b.
  • the pump 20 draws water from the wash and rinse bath into the bowl 29 to circulate said water from the pressurized wash and rinse bath to the spraying means 13a and 13b. Then, the water of the washing and rinsing bath returns to the bowl 34.
  • the pump 20 is driven by an electric motor.
  • This pump 20 operates during the water filling of said bowl 29 so as to control a solenoid valve for introducing water.
  • the state, open or closed, of the solenoid valve depends on the quantity of water obtained in the tank 2.
  • the washing and drying machine 1 also includes a multi-position valve for directing the pressurized wash and rinsing bath water from the pump 20 to the various parts of the hydraulic circuit according to the cleaning cycle.
  • a main advantage of this washing machine and drying dishes 1 is the flexibility of use from a tank 2 separated into at least two washing zones 10 and 11 independent and connected together. This device allows the user to choose to load one or more washing zones 10 and 11 depending on the dishes to be washed and also to select a longer or shorter program and more or less intensive.
  • a first washing zone 10 communicates with a second washing zone 11 by at least one washing water flow zone through the partition wall 12.
  • the partition wall 12 may comprise washing water spraying means.
  • this partition wall 12 is removable in order to be able to transform the dishwasher 1 from a conventional configuration of the tank 2 to a tank 2 separated into two washing zones 10 and 11.
  • the spraying means also comprise at least one watering means 30 formed in the upper wall 16 of the tank 2 for spraying water from the washing and rinsing bath in an area between the storm door 23 and the facades. 24 of dish baskets 14a and 14b.
  • the device for supplying water to the washing machine and drying the dishes 1 comprises a hydraulic distributor positioned at the outlet of the pump 20 and upstream of the feed circuit of the spraying means 13a and 13b and of said at least one means watering 30, which prevents the water from entering the feed channel means watering 30 when it is not desired to operate said at least one watering means 30, during a wash phase or a rinsing phase.
  • the water supply and circulation pump 20 has the role of sucking water from the tank 2 and supplying the various parts of the hydraulic circuit.
  • the cleaning process is used to clean dishes with uncooked soiling, such as glasses or cups, in a washing machine and to dry dishes 1.
  • Said washing machine and drying the dishes 1 comprises a tank 2 closed by a door 4 on the front face 3.
  • Said tank 2 is ventilated by at least one fan (not shown).
  • Said washing and drying machine 1 comprises at least one heating means (not shown) for heating the water of a washing and rinsing bath.
  • the cleaning process is targeted at specific pieces of crockery that correspond to restrictive pieces of crockery to be cleaned.
  • the pieces of dishes to clean are restrictive because they are fragile and require specific cleaning conditions to achieve performance in accordance with the expectations of users.
  • the cleaning conditions according to the invention are adapted so as not to damage the dishes.
  • Said pieces of dishes are those containing a liquid during their use, such as, for example, glasses, cups, and dishes that do not have cooked stains. These dishes are not soiled during use. The soiling may come in particular from the liquid contained in said dishes, fingerprints, traces of make-up, or cakes appetizers.
  • the stains are recent and have not dried for a long time after the use of dishes, which may be more than two days.
  • the cleaning process makes it possible to quickly and efficiently clean dishes when receiving people by optimizing the consumption of water and energy.
  • the short duration of such a method of cleaning dishware without the use of a washing product makes it possible to reuse said pieces of dishware during the same reception.
  • the cleaning process effectively cleans the dishes without damaging them by a suitable mechanical action and / or chemical aggression.
  • the chemical aggression of the dishes is greatly limited by the non-use of a washing product during the wash water circulation phase.
  • the duration of the cleaning cycle, the mechanical action and the temperature can then be reduced during the washing, rinsing and drying phases because the soils are not very adherent to the dishes.
  • the cleaning method according to the invention makes it possible to clean dishes containing a liquid and being lightly soiled, the stains of which consist essentially of the liquid contained in the dishes, fingerprints , traces of make-up and aperitif cakes.
  • Said method makes it possible to clean dishes according to parameters associated with the washing and rinsing phases according to water spraying sequences on said adapted dishes and with limited water jet pressure.
  • the water pressure is limited so as not to damage the dishes being sensitive to the impacts of water jets.
  • the pressure of the water jets is limited in a range between 110 and 140 mbar, and preferably of the order of 120 mbar.
  • the cleaning program comprising the sequence of steps defined above makes it possible to obtain efficient cleaning and drying results, and to avoid any damage to so-called fragile dishware. This succession of steps reduces the duration of the cleaning cycle of the dishes.
  • the cleaning method according to the invention makes it possible to obtain a short duration of a cleaning program of the order of 15 minutes.
  • a cleaning program of the order of 15 minutes.
  • Such a cleaning program is useful when receiving people to clean dishes in a short period of time. These dishes can be reused immediately during a reception after a first use.
  • the preheating phase is systematic for the accomplishment of said cleaning program. Said preheating phase makes it possible to obtain a better cleaning performance of the stains and drying of the dishes.
  • the prewarming phase of the wash bath water comprises a step of filling a predetermined quantity of water, a step of heating the wash bath water and a step of circulating the bath water. washing.
  • This succession of steps during the preheating phase of the washing machine and drying the dishes 1 allows to prepare a cleaning cycle of the dishes with uncooked dirt.
  • the preheating phase makes it possible to anticipate a cleaning cycle by providing a washing machine and drying the dishes to quickly clean dishes such as glasses, cups, and slightly dirty ramekins.
  • the amount of water introduced into the tank is of the order of 5 liters to allow efficient cleaning of the dishes.
  • the prewarming phase of the wash bath water implements said steps of heating the wash bath water and circulating the wash bath water for a predetermined maximum period D 2 .
  • the duration of the preheating phase can be long enough to load items of crockery and run a cleaning program for dishes with uncooked dirt.
  • the duration of the preheating phase allows flexibility of use of the washing machine and drying the dishes 1 and cleaning said pieces of dishes at a time chosen by the user.
  • the predetermined maximum period D 2 of the preheating phase may extend in a range between 30 minutes and 10 hours, and preferably of the order of 2 hours.
  • the preheating phase reduces the duration of a training program cleaning with uncooked dirt of the order of 5 to 30 minutes.
  • a step of draining the wash bath water is performed at the end of the predetermined maximum period D 2 of the prewarm phase of the wash bath and said prewarming phase of the wash bath water is stopped.
  • the water draining phase is executed in the case where a cleaning program has not been ordered directly or at a delayed start.
  • This phase of emptying and stopping the washing machine and drying dishes 1 avoids operation of said machine 1 resulting in unnecessary energy consumption.
  • a start command of a delayed start cleaning cycle is executed during the preheating phase of the wash bath water, then the prewarming phase of the wash bath water is stopped at the end. of the predetermined maximum period D 2 , and the wash bath water is stored in the tank 2 for said delayed start cleaning cycle.
  • the energy consumed by the washing machine and drying the dishes 1 is not wasted and allows a cleaning program to be carried out quickly and with low energy consumption to heat the wash bath water. .
  • the water introduced into the tank 2 is retained and is not rejected unnecessarily.
  • Said phase of heating the water of the washing bath and circulating water of the washing bath may be preceded by a complementary water filling phase of the washing bath.
  • This complementary filling phase makes it possible to obtain the appropriate amount of water for cleaning dishes with uncooked soiling.
  • the amount of additional water can be adjusted according to the parameters determined for the execution of the cleaning program.
  • Said phase of circulation of the water of the rinsing bath with the introduction of a rinsing product has a duration in a range extending between 1 and 5 minutes, and preferably of the order of 2 minutes.
  • the phase of draining the bath water is performed before the drying step to limit the amount of moisture displaced by the at least one fan to effectively dry the dishes and in a minimum time.
  • the pulsed air drying phase of the process is carried out by activating the at least one fan.
  • Said at least one fan makes it possible to circulate the air contained in the washing machine and drying the dishes 1 so as to remove drops of water from the dishes and those formed at the points of contact between the dishes and a dish rack 14a, 14b.
  • the air pulsed by said at least one fan may comprise at least a portion of fresh air from outside to renew the air enclosed in the washing machine and dry the dishes 1 and remove the moisture contained in that -this.
  • the duration D 1 of the drying phase is short and can extend in a range of between 1 and 5 minutes, and preferably of the order of 2 minutes.
  • a second phase of forced air drying of a period D 3 is carried out after said phase of forced air drying of a period D 1 .
  • This complementary drying phase keeps the dishes at a predetermined temperature and drying the drying lines connected to said at least one fan and all the elements included inside the tank 2.
  • the walls of the tank 2 are also dried and prevent water from running on it, in particular on the inner wall 23 of the door 4.
  • Said first and second drying phases are carried out continuously when the door 4 washing machine and drying dishes 1 is kept closed until the end of the first drying phase of a period D1.
  • the concatenation of the two drying phases is carried out without stopping said at least one fan.
  • Said second drying phase makes it possible to completely dry the loaded dishes in the tank 2 of the machine 1.
  • the duration of the complementary drying phase has a duration D 3 extending in a range between 10 and 40 minutes, and preferably of the order of 30 minutes.
  • this cleaning process makes it possible to limit the chemical attacks of the dishes and to limit the wear thereof, in particular by not using a detergent.
  • the introduction of the dishes in the tank 2 following the preheating phase of the wash bath reduces the duration of the cleaning cycle.
  • the steps of the method according to the invention make it possible to immediately and efficiently clean the dishes.
  • the cleaning cycle is active as soon as the loading of the dishes in the tank 2 and the closing of the door 4 of said tank 2 have finished.
  • the temperature of the washing bath at the end of the heating and circulating phase of the wash bath water is sufficient to overcome any problem of foam that can be caused by the introduction of a rinse in a bath having a temperature too low, that is to say less than 40 ° C.
  • the steps of said process are carried out with a single washing and rinsing bath.
  • the water consumption is limited to a minimum amount of water to carry out the washing and rinsing phases of the process.
  • the use of a single bath for washing and rinsing also makes it possible to reduce the duration of the cleaning cycle by avoiding heating the water for each of the washing and rinsing baths. As a result, the energy consumption is limited to the only heating of a single washing and rinsing bath.
  • Such a washing machine and drying dishes 1 comprises at least one watering means 30 adapted to circulate the wash bath water during a preheating phase of the wash bath water.
  • said at least one watering means 30 makes it possible to heat the air of the tank 2 and the structure of the washing machine and to dry the dishes 1 by circulating the water of the washing bath during a period of time. preheating phase. In this way, the wash bath water is heated and maintained at a predetermined temperature to allow the cleaning of the dishes immediately and effectively as soon as the loading of said dishes and the closing of the door 4 closing the tank 2 are complete. .
  • Said at least one watering means 30 can allow a flow of water of the washing bath during the preheating phase on at least one of the walls 17, 18, 19 of the tank 2 so as to heat the air contained in said tank 2 and heating the structure of the machine 1.
  • the circulation of the wash bath water maintains a predetermined temperature T 1 during the preheating phase so as to allow an immediate start of the cycle cleaning and thus limit the duration of this cycle.
  • Said at least one watering means 30 is preferably arranged for watering an inner wall 23 of the door 4 closing the tank 2.
  • said at least one watering means 30 makes it possible to heat the water of the washing bath without spraying the dishes.
  • Such a device can be installed on a washing machine and dry the classic dishes or on a washing machine and dry the dishes comprising two washing areas as illustrated in the drawings. figures 1 and 2 .
  • the dish baskets 14a and 14b may comprise facades 24, as previously described, and figures 1 and 2 , to avoid any spraying of parts of dishes loaded in said baskets 14a and 14b.
  • Said at least one watering means 30 makes it possible to clean the inner wall 23 of said door 4 without spraying the dishes during said pre-heating phase of the wash bath water and while increasing the temperature of the structure of the washing machine and drying dishes 1. In this way, the washing and drying machine 1 is ready to unroll a cycle of cleaning the dishes immediately. The duration of the cleaning cycle is thus reduced. And in particular, the duration of the heating phase of the wash bath water is reduced to a minimum duration.
  • the dishes are loaded only in a dish rack 14a placed in the upper part of the tank 2.
  • the loading of the pieces of crockery only in an upper basket 14a of the tank 2 makes it possible to optimize the duration of the cleaning cycle.
  • the periods of the water circulation phases of the washing bath and rinsing are optimized using only spraying means 13a for cleaning the dishes placed in the upper basket 14a of the tank 2.
  • the loading of the dishes can be accomplished at any time during the preheating phase of the washing bath, and especially during this preheating phase.
  • the spraying means 13a and 13b and spraying 30 are stopped to allow loading of the dishes in at least one dish rack 14a or 14b.
  • the spraying means 13a and 13b and the spraying means 30 are put into operation in order to allow the heating phase of the water to be carried out. washing bath and circulation of said wash bath water.
  • the cleaning of the pieces of crockery is carried out as soon as the door 4 is closed or as soon as the order is given to the control means of the washing machine and to dry the dishes 1 and the loading of the pieces of crockery is finished. In this way, the duration of the cleaning cycle is minimal while ensuring optimal cleaning performance of the dishes.
  • the cleaning method according to the invention can be implemented in a washing machine and drying the dishes as described above and in a washing machine and drying conventional dishes.
  • the pressure of the water jets can be adapted to the loading of the dishes in a dish rack to limit the impact on them that may lead to their damage.
  • the adjustment of the pressure of the water jets can be carried out by modifying the flow of the water supply pump of the hydraulic circuit, or by modifying the water flow section at the inlet of the hydraulic circuit.

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  • Washing And Drying Of Tableware (AREA)
  • Detergent Compositions (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The method involves preheating rinsing and washing liquor at a temperature of 60 degree Celsius, lower or equal to a threshold. The water of the liquor is heated and circulated with the loading of crockery pieces in a tub (2), at a temperature of 55 degree Celsius, lower or equal to another threshold, without introducing a washing product. The water is circulated with introduction of the product. The water is heated and circulated at a temperature of 70 degree Celsius, lower or equal to third threshold. The water is drain, and the pieces are washed by the pulsated air for a period.

Description

La présente invention concerne un procédé de nettoyage de pièces de vaisselle présentant des salissures non cuites, notamment de verres ou de tasses dans une machine à laver et sécher la vaisselle de manière à optimiser le cycle de nettoyage de pièces de vaisselle peu sales et éviter d'endommager ces pièces de vaisselle, tout en minimisant la durée dudit cycle de nettoyage.The present invention relates to a method of cleaning dishwashing articles having uncooked soiling, especially glasses or cups in a washing machine and drying the dishes so as to optimize the cleaning cycle of slightly dirty dishes and to avoid damaging these dishes, while minimizing the duration of said cleaning cycle.

De manière générale, l'invention concerne les machines à laver et sécher la vaisselle, particulièrement les machines à usage domestique.In general, the invention relates to machines for washing and drying dishes, particularly domestic machines.

Actuellement, les programmes disponibles sur les machines à laver et sécher la vaisselle utilisés pour des pièces de vaisselle fragiles ne sont pas adaptés pour optimiser le cycle de nettoyage, éviter l'endommagement de ces pièces de vaisselle et avec une durée dudit cycle de nettoyage courte.Currently, programs available on washing machines and dishwashers used for fragile dishes are not suitable for optimizing the cleaning cycle, prevent damage to these dishes and with a duration of said short cleaning cycle .

Les machines à laver et sécher la vaisselle présentes sur le marché comprennent un programme de nettoyage fragile permettant de limiter les contraintes mécaniques et les agressions chimiques subies par les pièces de vaisselle. Les programmes associés à ces cycles de nettoyage sont adaptés en conséquence et nécessitent des durées de programme et des temps de lavage, de rinçage et de séchage relativement conséquents. La nature des salissures à retirer est variée et nécessite une action mécanique avec une pression de jets d'eau élevée et une action chimique avec un produit de lavage.The washing and drying machines present on the market include a fragile cleaning program to limit the mechanical stress and chemical attack on the dishes. The programs associated with these cleaning cycles are adapted accordingly and require relatively long program times and wash, rinse and dry times. The nature of the dirt to be removed is varied and requires a mechanical action with a high pressure of water jets and a chemical action with a detergent.

Ces machines à laver et sécher la vaisselle comprenant un programme dit fragile ne permettent pas de nettoyer efficacement les pièces de vaisselle sans provoquer un endommagement de celles-ci. Les performances de nettoyage sont détériorées pour éviter l'endommagement des pièces de vaisselle. La protection des pièces de vaisselle est obtenue au détriment des performances attendues sur ce type de programme au niveau du lavage et du séchage en particulier, notamment en limitant la température des différents bains de lavage et de rinçage. En outre, la consommation d'eau pour les phases de lavage et de rinçage est importante pour permettre le renouvellement des bains de lavage et de rinçage au cours d'un programme dit fragile.These machines for washing and drying the dishes including a so-called fragile program do not effectively clean the dishes without causing damage to them. The cleaning performance is deteriorated to prevent damage to the dishes. The protection of the dishes is achieved at the expense of performance expected on this type of program at the wash and drying in particular, including limiting the temperature of different wash baths and rinsing. In addition, the consumption of water for the washing and rinsing phases is important to allow the renewal of the washing and rinsing baths during a so-called fragile program.

On connaît également un document US-A-4 277 290 qui décrit une machine à laver la vaisselle mettant en oeuvre un processus de fonctionnement comprenant une phase de préchauffage d'un bain de lavage, ledit bain de lavage étant contenu dans une cuve sans chargement de vaisselle, et une phase de lavage de la vaisselle suite au chargement de ladite vaisselle dans la cuve.A document is also known US-A-4,277,290 which describes a dishwashing machine employing an operating process comprising a prewarming phase of a washing bath, said washing bath being contained in a vessel without load of dishes, and a dishwashing phase continued loading said dishes into the tank.

La présente invention a pour but de résoudre les inconvénients précités et de proposer un procédé de nettoyage de pièces de vaisselle présentant des salissures non cuites, notamment de verres ou de tasses, dans une machine à laver et sécher la vaisselle, et une machine à laver et sécher la vaisselle associée à ce procédé, permettant d'optimiser les consommations en énergie et en eau sans endommager les pièces de vaisselle.The present invention aims to solve the aforementioned drawbacks and to provide a method of cleaning dishes with uncooked dirt, including glasses or cups, in a washing machine and dry the dishes, and a washing machine and drying dishes associated with this process, to optimize energy and water consumption without damaging the dishes.

En outre, ce procédé de nettoyage répond aux attentes de l'utilisateur pour nettoyer les pièces de vaisselle dans une période de temps courte.In addition, this cleaning process meets the expectations of the user to clean the dishes in a short period of time.

A cet effet, la présente invention vise, un procédé de nettoyage de pièces de vaisselle présentant des salissures non cuites, notamment de verres ou de tasses, dans une machine à laver et sécher la vaisselle, ladite machine à laver et sécher la vaisselle comprenant une cuve obturée par une porte en face frontale, ladite cuve étant ventilée par au moins un ventilateur, ladite machine à laver et sécher la vaisselle comprenant au moins un moyen de chauffage pour chauffer l'eau d'un bain de lavage et de rinçage.For this purpose, the present invention is directed to a method of cleaning dishwashing articles having uncooked soiling, especially glasses or cups, in a washing machine and drying dishes, said washing machine and drying dishes comprising a tank closed by a door on the front face, said tank being ventilated by at least one fan, said washing machine and drying dishes comprising at least one heating means for heating the water of a washing and rinsing bath.

Selon l'invention, le procédé comprend au moins les étapes suivantes exécutées dans l'ordre mentionné :

  • une phase de préchauffage du bain de lavage, sans chargement de pièces de vaisselle dans la cuve, à une température inférieure ou égale à un premier seuil T1 de l'ordre de 60°C ;
  • une phase de chauffage de l'eau du bain de lavage et de circulation de l'eau du bain de lavage, avec chargement des pièces de vaisselle dans la cuve, à une température inférieure ou égale à un second seuil T2 de l'ordre de 55°C et sans l'introduction d'un produit de lavage ;
  • une phase de circulation de l'eau du bain de rinçage avec l'introduction d'un produit de rinçage ;
  • une phase de chauffage de l'eau du bain de rinçage et de circulation de l'eau du bain de rinçage à une température inférieure ou égale à un troisième seuil T3 de l'ordre de 70°C ;
  • une phase de vidange de l'eau du bain de rinçage ; et
  • une phase de séchage par air pulsé d'une période D1.
According to the invention, the method comprises at least the following steps executed in the order mentioned:
  • a prewarming phase of the washing bath, without loading dishes in the tank, at a temperature less than or equal to a first threshold T 1 of the order of 60 ° C;
  • a phase of heating the water of the washing bath and circulation of the washing bath water, with loading of the dishes in the tank, at a temperature less than or equal to a second threshold T 2 of the order 55 ° C and without the introduction of a washing product;
  • a phase of circulation of the water of the rinsing bath with the introduction of a rinsing product;
  • a phase of heating the water of the rinsing bath and circulation of the water of the rinsing bath at a temperature less than or equal to a third threshold T 3 of the order of 70 ° C;
  • a phase of draining the water from the rinsing bath; and
  • a phase of forced air drying of a period D 1 .

Le procédé de nettoyage est ciblé sur des pièces de vaisselle spécifiques qui correspondent à des pièces de vaisselle contraignantes à nettoyer. Les pièces de vaisselle à nettoyer sont contraignantes puisqu'elles sont fragiles et nécessitent des conditions de nettoyage spécifiques pour obtenir des performances conformes aux attentes des utilisateurs. Les conditions de nettoyage selon l'invention sont adaptées afin de ne pas endommager les pièces de vaisselle.The cleaning process is targeted at specific pieces of crockery that correspond to restrictive pieces of crockery to be cleaned. The pieces of dishes to clean are restrictive because they are fragile and require specific cleaning conditions to achieve performance in accordance with the expectations of users. The cleaning conditions according to the invention are adapted so as not to damage the dishes.

Lesdites pièces de vaisselle sont celles contenant un liquide lors de leur utilisation, telles que par exemple les verres, les tasses, les ramequins et les couverts associés. Ces pièces de vaisselle sont peu salies lors de l'utilisation. Les salissures peuvent provenir notamment du liquide contenu dans lesdites pièces à vaisselle, des traces de doigts, des traces de maquillage, ou encore de gâteaux apéritifs. Les salissures sont récentes et n'ont pas séchées pendant une durée longue après l'utilisation des pièces de vaisselle, pouvant être supérieure à deux jours.Said dishes are those containing a liquid during use, such as glasses, cups, ramekins and cutlery associated. These dishes are not soiled during use. The soiling may come in particular from the liquid contained in said dish pieces, fingerprints, traces of makeup, or cakes appetizers. The stains are recent and have not dried for a long time after the use of dishes, which may be more than two days.

Ainsi, le procédé de nettoyage permet de nettoyer rapidement et efficacement des pièces de vaisselle lors de la réception de personnes en optimisant les consommations d'eau et d'énergie. La durée courte d'un tel procédé de nettoyage de pièces de vaisselles sans utilisation de produit de lavage permet de réutiliser lesdites pièces de vaisselle au cours d'une même réception.Thus, the cleaning process makes it possible to quickly and efficiently clean dishes when receiving people by optimizing the consumption of water and energy. The short duration of such a method of cleaning dishware without the use of a washing product makes it possible to reuse said pieces of dishware during the same reception.

En outre, le procédé de nettoyage permet de nettoyer efficacement les pièces de vaisselle sans endommager celles-ci par une action mécanique adaptée et / ou une agression chimique. L'agression chimique des pièces de vaisselle est fortement limitée par la non utilisation d'un produit de lavage au cours de la phase de mise en circulation de l'eau du bain de lavage.In addition, the cleaning process effectively cleans the dishes without damaging them by a suitable mechanical action and / or chemical aggression. The chemical aggression of the dishes is greatly limited by the non-use of a washing product during the wash water circulation phase.

Les salissures présentes sur ces pièces de vaisselle sont moins tenaces et adhérentes que d'autres salissures correspondant à des usages différents, notamment lors de la cuisson d'aliments. Les salissures ciblées se limitent en particulier à celles du liquide contenu dans les pièces de vaisselle, les traces de doigts, les traces de maquillage et de gâteaux apéritifs. L'ajout d'une phase de préchauffage de l'eau du bain de lavage avant la phase de chauffage de l'eau du bain de lavage et de circulation de l'eau du bain de lavage permet une diminution significative de la durée du cycle de nettoyage tout en garantissant la performance de lavage des salissures. La pression des jets d'eau est limitée dans une plage s'étendant entre 110 et 140 mbar, et préférentiellement de l'ordre de 120 mbar.Dirt on these pieces of dishes are less stubborn and adherent than other soils corresponding to different uses, especially when cooking food. The targeted dirt is limited in particular to the liquid contained in the dishes, fingerprints, traces of makeup and cakes appetizers. The addition of a pre-heating phase of the wash bath water before the heating phase of the wash bath water and the wash bath water circulation allows a significant decrease in the cycle time of cleaning while guaranteeing the cleaning performance of soiling. The pressure of the water jets is limited in a range extending between 110 and 140 mbar, and preferably of the order of 120 mbar.

La durée du cycle de nettoyage, l'action mécanique et la température peuvent alors être réduites au cours des phases de lavage, de rinçage et de séchage car les salissures sont peu adhérentes aux pièces de vaisselle.The duration of the cleaning cycle, the mechanical action and the temperature can then be reduced during the washing, rinsing and drying phases because the soils are not very adherent to the dishes.

Compte tenu des caractéristiques ci-dessus, le procédé de nettoyage selon l'invention permet de nettoyer des pièces de vaisselle contenant un liquide et étant peu sales, dont les salissures sont constituées essentiellement du liquide contenu dans les pièces de vaisselle, des traces de doigts, des traces de maquillage et de gâteaux apéritifs. Ledit procédé permet de nettoyer des pièces de vaisselle suivant des paramètres associés aux phases de lavage et de rinçage suivant des séquences d'aspersion d'eau sur lesdites pièces de vaisselle adaptées et avec une pression des jets d'eau limitée.In view of the above characteristics, the cleaning method according to the invention makes it possible to clean dishes containing a liquid and being lightly soiled, the stains of which consist essentially of the liquid contained in the dishes, fingerprints , traces of make-up and aperitif cakes. Said method makes it possible to clean dishes according to parameters associated with the washing and rinsing phases according to water spraying sequences on said adapted dishes and with limited water jet pressure.

Le programme de nettoyage comprenant la succession d'étapes définie précédemment permet d'obtenir des résultats de nettoyage et de séchage performants, et en évitant tout endommagement des pièces de vaisselle dites fragiles. Cette succession d'étapes permet de réduire la durée du cycle de nettoyage des pièces de vaisselle.The cleaning program comprising the sequence of steps defined above makes it possible to obtain efficient cleaning and drying results, and to avoid any damage to so-called fragile dishware. This succession of steps reduces the cleaning cycle time of the dishes.

La phase de préchauffage est systématique pour l'accomplissement dudit programme de nettoyage. Ladite phase de préchauffage permet d'obtenir une meilleure performance de nettoyage des salissures et de séchage des pièces de vaisselle.The preheating phase is systematic for the accomplishment of said cleaning program. Said preheating phase makes it possible to obtain a better cleaning performance of the stains and drying of the dishes.

En outre, ce procédé de nettoyage permet de limiter les agressions chimiques des pièces de vaisselle et de limiter l'usure de celles-ci.In addition, this cleaning process makes it possible to limit the chemical attacks of the dishes and to limit the wear thereof.

L'introduction des pièces de vaisselle dans la cuve à la suite de la phase de préchauffage du bain de lavage permet de réduire la durée du cycle de nettoyage. Les étapes du procédé selon l'invention permettent de nettoyer immédiatement et efficacement les pièces de vaisselle. Le cycle de nettoyage est actif dès la fin du chargement des pièces de vaisselle dans la cuve et la fermeture de la porte de ladite cuve.The introduction of the dishes in the tank following the prewarming phase of the wash bath reduces the duration of the cleaning cycle. The steps of the method according to the invention make it possible to immediately and efficiently clean the dishes. The cleaning cycle is active as soon as the loading of the pieces of dishes into the tank and the closing of the door of said tank are complete.

La température du bain de lavage en fin de phase de chauffage et de mise en circulation de l'eau du bain de lavage est suffisante pour pallier à tout problème de mousse pouvant être provoqué par l'introduction d'un produit de rinçage dans un bain ayant une température trop basse, c'est-à-dire inférieure à 40°C.The temperature of the washing bath at the end of the heating and circulation phase of the wash bath water is sufficient to overcome any foam problem that may be caused by the introduction of a rinsing product into a bath having a temperature too low, that is to say lower than 40 ° C.

Selon une caractéristique préférée de l'invention, les étapes dudit procédé sont mises en oeuvre avec un bain de lavage et de rinçage unique.According to a preferred characteristic of the invention, the steps of said method are carried out with a single washing and rinsing bath.

Ainsi, la consommation en eau est limitée à une quantité d'eau minimum pour réaliser les phases de lavage et de rinçage du procédé. L'utilisation d'un seul bain pour le lavage et le rinçage permet également de diminuer la durée du cycle de nettoyage en évitant une chauffe de l'eau pour chacun des bains de lavage et de rinçage.Thus, the water consumption is limited to a minimum amount of water to carry out the washing and rinsing phases of the process. The use of a single bath for washing and rinsing also makes it possible to reduce the duration of the cleaning cycle by avoiding heating the water for each of the washing and rinsing baths.

D'autres particularités et avantages apparaîtront encore dans la description ci-après.Other features and advantages will become apparent in the description below.

Aux dessins annexés, donnés à titre d'exemples non limitatifs :

  • la figure 1 est un schéma en perspective illustrant une machine à laver et sécher la vaisselle conforme à l'invention ; et
  • la figure 2 est un schéma en coupe illustrant une machine à laver et sécher la vaisselle conforme à l'invention.
In the accompanying drawings, given as non-limiting examples:
  • the figure 1 is a perspective diagram illustrating a washing machine and drying dishes according to the invention; and
  • the figure 2 is a sectional diagram illustrating a washing machine and drying dishes according to the invention.

On va décrire tout d'abord en référence aux figures 1 et 2, une machine à laver et sécher la vaisselle, adaptée à mettre en oeuvre le procédé de nettoyage de pièces de vaisselle conforme à l'invention.We will first describe with reference to figures 1 and 2 , a washing machine and drying dishes, adapted to implement the cleaning method of dishes according to the invention.

Une machine à laver et sécher la vaisselle 1 comprend une cuve 2 dont la face frontale 3 est fermée par une porte 4. La cuve 2 est entourée par un boîtier 5 (représenté partiellement) comprenant une paroi supérieure 6, des parois latérales 7, une paroi de fond 8 et une paroi inférieure 9.A washing machine and drying dishes 1 comprises a tank 2 whose front face 3 is closed by a door 4. The tank 2 is surrounded by a housing 5 (partially shown) comprising an upper wall 6, side walls 7, a bottom wall 8 and a bottom wall 9.

Ladite cuve 2 peut être divisée en au moins deux zones de lavage 10 et 11 l'une au-dessus de l'autre séparées par au moins une paroi de séparation 12 et lesdites zones de lavage 10 et 11 communiquant l'une avec l'autre.Said tank 2 can be divided into at least two washing zones 10 and 11 one above the other separated by at least one partition wall 12 and said washing areas 10 and 11 communicating with each other.

Chaque zone de lavage 10 et 11 comprend au moins un moyen de pulvérisation d'eau d'un bain de lavage et de rinçage 13a et 13b sur les pièces de vaisselle.Each washing zone 10 and 11 comprises at least one water spraying means of a washing and rinsing bath 13a and 13b on the dishes.

Une eau d'un bain de lavage et de rinçage est définie comme de l'eau permettant le nettoyage de la vaisselle et circulant dans un circuit hydraulique 15 d'une machine à laver et sécher la vaisselle 1. L'origine de l'eau d'un bain de lavage et de rinçage est une eau arrivant du réseau d'alimentation de la machine à laver et sécher la vaisselle 1.A water of a washing and rinsing bath is defined as water allowing the cleaning of the dishes and circulating in a hydraulic circuit 15 of a washing machine and drying the dishes 1. The origin of the water a washing and rinsing bath is a water coming from the feeding network of the washing machine and drying the dishes 1.

La cuve 2 comprend une paroi supérieure 16, des parois latérales 17, une paroi de fond 18 et une paroi inférieure 19.The tank 2 comprises an upper wall 16, side walls 17, a bottom wall 18 and a bottom wall 19.

Le boîtier 5 de la machine à laver et sécher la vaisselle 1 est adapté à loger la cuve 2. Ladite cuve 2 est adaptée notamment à contenir l'eau du bain de lavage et de rinçage des phases d'un cycle de nettoyage.The housing 5 of the washing machine and drying the dishes 1 is adapted to house the tank 2. Said tank 2 is adapted in particular to contain the wash bath water and rinse phases of a cleaning cycle.

Lesdites zones de lavage 10 et 11 décrites dans cet exemple de réalisation sont définies comme la première zone de lavage 10 étant située dans la partie supérieure de la cuve 2 et la seconde zone de lavage 11 étant située dans la partie inférieure de la cuve 2.Said washing zones 10 and 11 described in this embodiment are defined as the first washing zone 10 being located in the upper part of the tank 2 and the second washing zone 11 being located in the lower part of the tank 2.

Chacune desdites zones de lavage 10 et 11 a une ouverture frontale permettant l'accès à celles-ci.Each of said washing zones 10 and 11 has a front opening allowing access thereto.

A l'intérieur de la cuve 2, un panier de vaisselle 14a et 14b est monté dans chaque zone de lavage 10 et 11. Le panier de vaisselle 14a situé dans la partie haute de la cuve 2 est désigné par panier supérieur et pour le panier à vaisselle 14b de la partie inférieure de la cuve 2 par panier inférieur.Inside the tank 2, a basket of dishes 14a and 14b is mounted in each washing zone 10 and 11. The basket of dishes 14a located in the upper part of the tank 2 is designated by upper basket and for the basket dishwashing 14b of the lower part of the tank 2 by lower basket.

Les paniers à vaisselle 14a et 14b peuvent être poussés et retirés des zones de lavage 10 et 11 en les faisant glisser à l'intérieur de la cuve 2 de la machine à laver et sécher la vaisselle 1 soit à la fin d'un cycle de nettoyage pour le déchargement de la vaisselle soit au début du cycle de nettoyage pour le chargement de la vaisselle.The dish baskets 14a and 14b can be pushed and removed from the washing areas 10 and 11 by sliding them inside the tank 2 of the washing machine and drying the dishes 1 at the end of a cycle of washing. cleaning for unloading the dishes at the beginning of the cleaning cycle for loading the dishes.

Cette machine à laver et sécher la vaisselle 1 comprend au moins deux zones de lavage 10 et 11 et est munie d'une pompe 20 commune pour la circulation de l'eau du bain de lavage et de rinçage dans une ou l'autre des zones de lavage 10 et 11 ou bien dans l'ensemble des zones de lavage 10 et 11 simultanément.This washing and drying machine 1 comprises at least two washing zones 10 and 11 and is provided with a common pump 20 for the circulation of the washing bath and rinsing water in one or other of the zones. 10 and 11 washing or all of the washing zones 10 and 11 simultaneously.

La machine à laver et sécher la vaisselle 1 permet d'activer sélectivement ou concurremment une ou plusieurs zones de lavage 10 et 11 si les pièces de vaisselle sales sont chargées dans une zone de lavage 10 et 11 ou les deux.The washing and drying machine 1 selectively or concurrently activates one or more washing zones 10 and 11 if the dirty dishes are loaded into a washing zone 10 and 11 or both.

Une seconde pompe (non illustrée) permet la vidange de la cuve 2.A second pump (not shown) allows the tank 2 to be emptied.

Des moyens de commande 21 permettent de dérouler des programmes de nettoyage prédéterminés indépendants ou encore identiques pour chacune desdites zones de lavage 10 et 11.Control means 21 make it possible to unwind independent or identical predetermined cleaning programs for each of said washing zones 10 and 11.

La porte 4 de cuve 2 permet d'obturer une ouverture réalisée dans la cuve 2. Cette porte 4 de cuve 2 peut ainsi être mobile entre une position fermée dans laquelle elle obture l'ouverture, de manière étanche, et une position ouverte.The door 4 of tank 2 makes it possible to close an opening made in the tank 2. This door 4 of tank 2 can thus be movable between a closed position in which it closes the opening, in a sealed manner, and an open position.

Dans cet exemple de réalisation, et de manière nullement limitative, la porte 4 de cuve 2 est montée pivotante autour d'un axe de rotation solidaire du boîtier 5 de la machine à laver et sécher la vaisselle 1.In this embodiment, and in no way limiting, the tank door 4 is pivotally mounted about an axis of rotation integral with the casing 5 of the washing machine and drying dishes 1.

Cette machine à laver et sécher la vaisselle 1 comprend une porte 4 formée notamment de deux parties 22 et 23. La première partie 22 de la porte 4 correspond à la façade extérieure visible par le client. Ladite façade 22 peut aussi être un panneau adapté à recevoir un élément de meuble de la cuisine. La seconde partie 23 de la porte 4 est la contre-porte, c'est-à-dire la paroi intérieure de la porte 4 obturant la cuve 2.This washing machine and drying dishes 1 comprises a door 4 formed in particular of two parts 22 and 23. The first part 22 of the door 4 corresponds to the external facade visible by the customer. Said facade 22 may also be a panel adapted to receive a piece of furniture of the kitchen. The second part 23 of the door 4 is the counter door, that is to say the inner wall of the door 4 closing the tank 2.

Les paniers de vaisselle 14a et 14b peuvent comprendre des façades 24 placées sur les parois frontales desdits paniers 14a et 14b en vis-à-vis de la contre-porte 23 de la porte 4.The baskets 14a and 14b may include facades 24 placed on the front walls of said baskets 14a and 14b vis-à-vis the counter door 23 of the door 4.

Comme bien illustré sur la figure 2, un premier moyen de pulvérisation d'eau de lavage et de rinçage 13a et un second moyen de pulvérisation d'eau de lavage et de rinçage 13b sont disposés respectivement dans ladite première zone de lavage 10 et ladite seconde zone de lavage 11 pour asperger la vaisselle sale chargée dans les paniers de vaisselle 14a et 14b.As well illustrated on the figure 2 a first washing and rinsing water spraying means 13a and a second washing and rinsing water spraying means 13b are respectively disposed in said first washing zone 10 and said second washing zone 11 for spraying the water. dirty dishes loaded in the crockery baskets 14a and 14b.

Dans un mode de réalisation préféré, la machine à laver et sécher la vaisselle 1 comprend un premier moyen de pulvérisation 13a associé à la première zone de lavage 10 comprenant un bras de pulvérisation rotatif 25 disposé dans la partie inférieure de la première zone de lavage 10 pour pulvériser l'eau du bain de lavage et de rinçage sur la vaisselle dans une direction de bas en haut et une buse de pulvérisation 26 assemblée sur la paroi supérieure 16 de la cuve 2 de la première zone de lavage 10 pour pulvériser l'eau du bain de lavage et de rinçage sur la vaisselle dans une direction de haut en bas.In a preferred embodiment, the dishwashing and drying machine 1 comprises a first spray means 13a associated with the first wash zone 10 comprising a rotatable spray arm disposed in the lower portion of the first wash zone 10. for spraying the wash and rinse bath water on the dishes in a bottom-up direction and a spray nozzle 26 assembled on the upper wall 16 of the tank 2 of the first washing zone 10 to spray the water wash and rinse the dishes in a direction from top to bottom.

De même, un second moyen de pulvérisation 13b associé à la seconde zone de lavage 11 a un bras de pulvérisation rotatif 27 disposé dans la partie inférieure de la seconde zone de lavage 11 pour pulvériser l'eau de lavage et de rinçage sur la vaisselle dans une direction de bas en haut et une buse de pulvérisation 28 reliée à la paroi de séparation 12.Similarly, a second spraying means 13b associated with the second washing zone 11 has a rotating spray arm 27 disposed in the lower part of the second washing zone 11 for spraying the washing and rinsing water on the dishes in a direction from bottom to top and a spray nozzle 28 connected to the partition wall 12.

Grâce à cette disposition des premier et second moyens de pulvérisation d'eau de lavage et de rinçage 13a et 13b, le nettoyage de la vaisselle peut être réalisé indépendamment dans une desdites zones de lavage 10 et 11 ou simultanément à l'ensemble des zones de lavage 10 et 11.By virtue of this arrangement of the first and second washing and rinsing water spraying means 13a and 13b, the cleaning of the crockery can be carried out independently in one of said washing zones 10 and 11 or simultaneously with all of the washing zones. washing 10 and 11.

Dans l'exemple de réalisation, la machine à laver et sécher la vaisselle 1 fonctionne de telle sorte à minimiser le volume d'eau du bain de lavage et de rinçage retenue dans une gamelle 29 ménagée dans la paroi inférieure 19 de la cuve 2 provenant des premier et second moyens de pulvérisation 13a et 13b.In the exemplary embodiment, the washing and drying machine 1 operates in such a way as to minimize the volume of water in the washing and rinsing bath retained in a bowl 29 formed in the bottom wall 19 of the tank 2 from the first and second spray means 13a and 13b.

La pompe 20 puise l'eau du bain de lavage et de rinçage dans la gamelle 29 pour faire circuler ladite eau du bain de lavage et de rinçage sous pression jusqu'aux moyens de pulvérisation 13a et 13b. Ensuite, l'eau du bain de lavage et de rinçage retourne vers la gamelle 34.The pump 20 draws water from the wash and rinse bath into the bowl 29 to circulate said water from the pressurized wash and rinse bath to the spraying means 13a and 13b. Then, the water of the washing and rinsing bath returns to the bowl 34.

La pompe 20 est entraînée par un moteur électrique.The pump 20 is driven by an electric motor.

Cette pompe 20 fonctionne au cours du remplissage en eau de ladite gamelle 29 de manière à commander une électrovanne d'introduction d'eau.This pump 20 operates during the water filling of said bowl 29 so as to control a solenoid valve for introducing water.

L'état, ouvert ou fermé, de l'électrovanne dépend de la quantité d'eau obtenue dans la cuve 2.The state, open or closed, of the solenoid valve depends on the quantity of water obtained in the tank 2.

La machine à laver et sécher la vaisselle 1 comprend aussi un clapet multi - positions pour diriger l'eau du bain de lavage et de rinçage sous pression de la pompe 20 vers les différentes parties du circuit hydraulique en fonction du cycle de nettoyage.The washing and drying machine 1 also includes a multi-position valve for directing the pressurized wash and rinsing bath water from the pump 20 to the various parts of the hydraulic circuit according to the cleaning cycle.

Un avantage principal de cette machine à laver et sécher la vaisselle 1 est la flexibilité d'usage provenant d'une cuve 2 séparée en au moins deux zones de lavage 10 et 11 indépendantes et connectées ensemble. Cet appareil permet à l'utilisateur de choisir de charger une ou plusieurs zones de lavage 10 et 11 suivant la vaisselle à laver et aussi de sélectionner un programme plus ou moins long et plus ou moins intensif.A main advantage of this washing machine and drying dishes 1 is the flexibility of use from a tank 2 separated into at least two washing zones 10 and 11 independent and connected together. This device allows the user to choose to load one or more washing zones 10 and 11 depending on the dishes to be washed and also to select a longer or shorter program and more or less intensive.

La construction d'un tel lave-vaisselle est compatible à partir de la structure d'un lave-vaisselle classique.The construction of such a dishwasher is compatible from the structure of a conventional dishwasher.

Une première zone de lavage 10 communique avec une seconde zone de lavage 11 par au moins une zone d'écoulement d'eau de lavage au travers de la paroi de séparation 12.A first washing zone 10 communicates with a second washing zone 11 by at least one washing water flow zone through the partition wall 12.

Bien entendu, la paroi de séparation 12 peut comprendre des moyens de pulvérisation d'eau de lavage.Of course, the partition wall 12 may comprise washing water spraying means.

De préférence, cette paroi de séparation 12 est amovible afin de pouvoir transformer le lave-vaisselle 1 d'une configuration classique de la cuve 2 à une cuve 2 séparée en deux zones de lavage 10 et 11.Preferably, this partition wall 12 is removable in order to be able to transform the dishwasher 1 from a conventional configuration of the tank 2 to a tank 2 separated into two washing zones 10 and 11.

Les moyens de pulvérisation comprennent également au moins un moyen d'arrosage 30 ménagé dans la paroi supérieure 16 de la cuve 2 pour pulvériser de l'eau du bain de lavage et de rinçage dans une zone comprise entre la contre-porte 23 et les façades 24 de paniers à vaisselle 14a et 14b.The spraying means also comprise at least one watering means 30 formed in the upper wall 16 of the tank 2 for spraying water from the washing and rinsing bath in an area between the storm door 23 and the facades. 24 of dish baskets 14a and 14b.

Le dispositif d'alimentation en eau de la machine à laver et sécher la vaisselle 1 comprend un répartiteur hydraulique positionné à la sortie de la pompe 20 et en amont du circuit d'alimentation des moyens de pulvérisation 13a et 13b et dudit au moins un moyen d'arrosage 30, qui évite que l'eau ne rentre dans le canal d'alimentation des moyens d'arrosage 30 lorsque l'on ne souhaite pas faire fonctionner ledit au moins un moyen d'arrosage 30, au cours d'une phase lavage ou d'une phase de rinçage.The device for supplying water to the washing machine and drying the dishes 1 comprises a hydraulic distributor positioned at the outlet of the pump 20 and upstream of the feed circuit of the spraying means 13a and 13b and of said at least one means watering 30, which prevents the water from entering the feed channel means watering 30 when it is not desired to operate said at least one watering means 30, during a wash phase or a rinsing phase.

La pompe d'alimentation et de circulation d'eau 20 a pour rôle d'aspirer l'eau de la cuve 2 et d'alimenter les différentes parties du circuit hydraulique.The water supply and circulation pump 20 has the role of sucking water from the tank 2 and supplying the various parts of the hydraulic circuit.

On va décrire à présent le procédé de nettoyage des pièces de vaisselle présentant des salissures non cuites conforme à l'invention.We will now describe the method of cleaning dishes having uncooked soil according to the invention.

Le procédé de nettoyage permet de nettoyer des pièces de vaisselle présentant des salissures non cuites, notamment de verres ou de tasses, dans une machine à laver et sécher la vaisselle 1.The cleaning process is used to clean dishes with uncooked soiling, such as glasses or cups, in a washing machine and to dry dishes 1.

Ladite machine à laver et sécher la vaisselle 1 comprend une cuve 2 obturée par une porte 4 en face frontale 3.Said washing machine and drying the dishes 1 comprises a tank 2 closed by a door 4 on the front face 3.

Ladite cuve 2 est ventilée par au moins un ventilateur (non représenté).Said tank 2 is ventilated by at least one fan (not shown).

Ladite machine à laver et sécher la vaisselle 1 comprend au moins un moyen de chauffage (non représenté) pour chauffer l'eau d'un bain de lavage et de rinçage.Said washing and drying machine 1 comprises at least one heating means (not shown) for heating the water of a washing and rinsing bath.

Le procédé comprend au moins les étapes suivantes exécutées dans l'ordre mentionné :

  • une phase de préchauffage du bain de lavage, sans chargement de pièces de vaisselle dans la cuve 2, à une température inférieure ou égale à un premier seuil T1 de l'ordre de 60°C ;
  • une phase de chauffage de l'eau du bain de lavage et de circulation de l'eau du bain de lavage, avec chargement des pièces de vaisselle dans la cuve 2, à une température inférieure ou égale à un second seuil T2 de l'ordre de 55°C et sans l'introduction d'un produit de lavage ;
  • une phase de circulation de l'eau du bain de rinçage avec l'introduction d'un produit de rinçage ;
  • une phase de chauffage de l'eau du bain de rinçage et de circulation de l'eau du bain de rinçage à une température inférieure ou égale à un troisième seuil T3 de l'ordre de 70°C ;
  • une phase de vidange de l'eau du bain de rinçage ; et
  • une phase de séchage par air pulsé d'une période D1.
The method comprises at least the following steps executed in the order mentioned:
  • a prewarming phase of the washing bath, without loading of dishes in the tank 2, at a temperature less than or equal to a first threshold T 1 of the order of 60 ° C;
  • a phase of heating the water of the washing bath and circulation of the water of the washing bath, with loading of the dishes in the tank 2, at a temperature less than or equal to a second threshold T 2 of the order of 55 ° C and without the introduction of a washing product;
  • a phase of circulation of the water of the rinsing bath with the introduction of a rinsing product;
  • a phase of heating the water of the rinsing bath and circulation of the water of the rinsing bath at a temperature less than or equal to a third threshold T 3 of the order of 70 ° C;
  • a phase of draining the water from the rinsing bath; and
  • a phase of forced air drying of a period D 1 .

Le procédé de nettoyage est ciblé sur des pièces de vaisselle spécifiques qui correspondent à des pièces de vaisselle contraignantes à nettoyer. Les pièces de vaisselle à nettoyer sont contraignantes puisqu'elles sont fragiles et nécessitent des conditions de nettoyage spécifiques pour obtenir des performances conformes aux attentes des utilisateurs. Les conditions de nettoyage selon l'invention sont adaptées afin de ne pas endommager les pièces de vaisselle.The cleaning process is targeted at specific pieces of crockery that correspond to restrictive pieces of crockery to be cleaned. The pieces of dishes to clean are restrictive because they are fragile and require specific cleaning conditions to achieve performance in accordance with the expectations of users. The cleaning conditions according to the invention are adapted so as not to damage the dishes.

Lesdites pièces de vaisselle sont celles contenant un liquide lors de leur utilisation, telles que par exemple les verres, les tasses, et les pièces de vaisselle ne présentant pas de salissures cuites. Ces pièces de vaisselle sont peu salies lors de l'utilisation. Les salissures peuvent provenir notamment du liquide contenu dans lesdites pièces à vaisselle, des traces de doigts, des traces de maquillage, ou encore de gâteaux apéritifs.Said pieces of dishes are those containing a liquid during their use, such as, for example, glasses, cups, and dishes that do not have cooked stains. These dishes are not soiled during use. The soiling may come in particular from the liquid contained in said dishes, fingerprints, traces of make-up, or cakes appetizers.

Les salissures sont récentes et n'ont pas séchées pendant une durée longue après l'utilisation des pièces de vaisselle, pouvant être supérieure à deux jours.The stains are recent and have not dried for a long time after the use of dishes, which may be more than two days.

Ainsi, le procédé de nettoyage permet de nettoyer rapidement et efficacement des pièces de vaisselle lors de la réception de personnes en optimisant les consommations d'eau et d'énergie. La durée courte d'un tel procédé de nettoyage de pièces de vaisselles sans utilisation de produit de lavage permet de réutiliser lesdites pièces de vaisselle au cours d'une même réception.Thus, the cleaning process makes it possible to quickly and efficiently clean dishes when receiving people by optimizing the consumption of water and energy. The short duration of such a method of cleaning dishware without the use of a washing product makes it possible to reuse said pieces of dishware during the same reception.

En outre, le procédé de nettoyage permet de nettoyer efficacement les pièces de vaisselle sans endommager celles-ci par une action mécanique adaptée et / ou une agression chimique. L'agression chimique des pièces de vaisselle est fortement limitée par la non utilisation d'un produit de lavage au cours de la phase de mise en circulation de l'eau du bain de lavage.In addition, the cleaning process effectively cleans the dishes without damaging them by a suitable mechanical action and / or chemical aggression. The chemical aggression of the dishes is greatly limited by the non-use of a washing product during the wash water circulation phase.

Les salissures présentes sur ces pièces de vaisselle sont moins tenaces et adhérentes que sur d'autres salissures correspondant à des usages différents, notamment lors de la cuisson d'aliments. Les salissures ciblées se limitent en particulier à celles du liquide contenu dans les pièces de vaisselle, les traces de doigts, les traces de maquillage, et les gâteaux apéritifs. L'ajout d'une phase de préchauffage de l'eau du bain de lavage avant la phase de chauffage de l'eau du bain de lavage et de circulation de l'eau du bain de lavage permet une diminution significative de la durée du cycle de nettoyage tout en garantissant la performance de lavage des salissures.Dirt on these pieces of dishes are less stubborn and adherent than on other soils corresponding to different uses, especially when cooking food. Targeted dirt is limited in particular to the liquid contained in the dishes, fingerprints, traces of makeup, and cakes appetizers. The addition of a pre-heating phase of the wash bath water before the heating phase of the wash bath water and the wash bath water circulation allows a significant decrease in the cycle time of cleaning while guaranteeing the cleaning performance of soiling.

La durée du cycle de nettoyage, l'action mécanique et la température peuvent alors être réduites au cours des phases de lavage, de rinçage et de séchage car les salissures sont peu adhérentes aux pièces de vaisselle.The duration of the cleaning cycle, the mechanical action and the temperature can then be reduced during the washing, rinsing and drying phases because the soils are not very adherent to the dishes.

Compte tenu des caractéristiques ci-dessus, le procédé de nettoyage selon l'invention permet de nettoyer des pièces de vaisselle contenant un liquide et étant peu sales, dont les salissures sont constituées essentiellement du liquide contenu dans les pièces de vaisselle, des traces de doigts, des traces de maquillage et des gâteaux apéritifs. Ledit procédé permet de nettoyer des pièces de vaisselle suivant des paramètres associés aux phases de lavage et de rinçage suivant des séquences d'aspersion d'eau sur lesdites pièces de vaisselle adaptées et avec une pression des jets d'eau limitée. La pression d'eau est limitée pour de ne pas abîmer les pièces de vaisselle étant sensibles aux impacts des jets d'eau.In view of the above characteristics, the cleaning method according to the invention makes it possible to clean dishes containing a liquid and being lightly soiled, the stains of which consist essentially of the liquid contained in the dishes, fingerprints , traces of make-up and aperitif cakes. Said method makes it possible to clean dishes according to parameters associated with the washing and rinsing phases according to water spraying sequences on said adapted dishes and with limited water jet pressure. The water pressure is limited so as not to damage the dishes being sensitive to the impacts of water jets.

La pression des jets d'eau est limitée dans une plage s'étendant entre 110 et 140 mbar, et préférentiellement de l'ordre de 120 mbar.The pressure of the water jets is limited in a range between 110 and 140 mbar, and preferably of the order of 120 mbar.

Le programme de nettoyage comprenant la succession d'étapes définie précédemment permet d'obtenir des résultats de nettoyage et de séchage performants, et en évitant tout endommagement des pièces de vaisselle dites fragiles. Cette succession d'étapes permet de réduire la durée du cycle de nettoyage des pièces de vaisselle.The cleaning program comprising the sequence of steps defined above makes it possible to obtain efficient cleaning and drying results, and to avoid any damage to so-called fragile dishware. This succession of steps reduces the duration of the cleaning cycle of the dishes.

Le procédé de nettoyage conforme à l'invention permet d'obtenir une durée courte d'un programme de nettoyage de l'ordre de 15 minutes. Ainsi, l'utilisateur peut disposer des pièces de vaisselle rapidement. Un tel programme de nettoyage est utile lors d'une réception de personnes pour nettoyer des pièces de vaisselle dans une période de temps réduite. Ces pièces de vaisselle peuvent ainsi être réutilisés immédiatement au cours d'une réception après une première utilisation.The cleaning method according to the invention makes it possible to obtain a short duration of a cleaning program of the order of 15 minutes. Thus, the user can dispose of dishes quickly. Such a cleaning program is useful when receiving people to clean dishes in a short period of time. These dishes can be reused immediately during a reception after a first use.

La phase de préchauffage est systématique pour l'accomplissement dudit programme de nettoyage. Ladite phase de préchauffage permet d'obtenir une meilleure performance de nettoyage des salissures et de séchage des pièces de vaisselle.The preheating phase is systematic for the accomplishment of said cleaning program. Said preheating phase makes it possible to obtain a better cleaning performance of the stains and drying of the dishes.

La phase de préchauffage de l'eau du bain de lavage comprend une étape de remplissage d'une quantité d'eau déterminée, une étape de chauffage de l'eau du bain de lavage et une étape de circulation de l'eau du bain de lavage.The prewarming phase of the wash bath water comprises a step of filling a predetermined quantity of water, a step of heating the wash bath water and a step of circulating the bath water. washing.

Cette succession d'étapes au cours de la phase de préchauffage de la machine à laver et sécher la vaisselle 1 permet de préparer un cycle de nettoyage des pièces de vaisselle présentant des salissures non cuites. La phase de préchauffage permet d'anticiper un cycle de nettoyage en mettant à disposition une machine à laver et sécher la vaisselle pour nettoyer rapidement des pièces de vaisselle telles que des verres, des tasses, des ramequins peu sales.This succession of steps during the preheating phase of the washing machine and drying the dishes 1 allows to prepare a cleaning cycle of the dishes with uncooked dirt. The preheating phase makes it possible to anticipate a cleaning cycle by providing a washing machine and drying the dishes to quickly clean dishes such as glasses, cups, and slightly dirty ramekins.

La quantité d'eau introduite dans la cuve est de l'ordre de 5 litres pour permettre un nettoyage efficace des pièces de vaisselle.The amount of water introduced into the tank is of the order of 5 liters to allow efficient cleaning of the dishes.

La phase de préchauffage de l'eau du bain de lavage met en oeuvre lesdites étapes de chauffage de l'eau du bain de lavage et de circulation de l'eau du bain de lavage pendant une période maximale prédéterminée D2.The prewarming phase of the wash bath water implements said steps of heating the wash bath water and circulating the wash bath water for a predetermined maximum period D 2 .

La durée de la phase de préchauffage peut être suffisamment longue pour permettre de charger des pièces de vaisselle et exécuter un programme de nettoyage des pièces de vaisselle présentant des salissures non cuites. La durée de la phase de préchauffage permet une souplesse d'utilisation de la machine à laver et sécher la vaisselle 1 et de nettoyer lesdites pièces de vaisselle à un instant choisi par l'utilisateur.The duration of the preheating phase can be long enough to load items of crockery and run a cleaning program for dishes with uncooked dirt. The duration of the preheating phase allows flexibility of use of the washing machine and drying the dishes 1 and cleaning said pieces of dishes at a time chosen by the user.

La période maximale prédéterminée D2 de la phase de préchauffage peut s'étendre dans une plage comprise entre 30 minutes et 10 heures, et préférentiellement de l'ordre de 2 heures.The predetermined maximum period D 2 of the preheating phase may extend in a range between 30 minutes and 10 hours, and preferably of the order of 2 hours.

La phase de préchauffage permet de réduire la durée d'un programme de nettoyage présentant des salissures non cuites de l'ordre de 5 à 30 minutes.The preheating phase reduces the duration of a training program cleaning with uncooked dirt of the order of 5 to 30 minutes.

Une étape de vidange de l'eau du bain de lavage est exécutée à la fin de la période maximale prédéterminée D2 de la phase de préchauffage du bain de lavage et ladite phase de préchauffage de l'eau du bain de lavage est arrêtée.A step of draining the wash bath water is performed at the end of the predetermined maximum period D 2 of the prewarm phase of the wash bath and said prewarming phase of the wash bath water is stopped.

La phase de vidange de l'eau est exécutée dans le cas où un programme de nettoyage n'a pas été commandé directement ou en départ différé.The water draining phase is executed in the case where a cleaning program has not been ordered directly or at a delayed start.

Cette phase de vidange et l'arrêt de la machine à laver et sécher la vaisselle 1 permet d'éviter un fonctionnement de ladite machine 1 entraînant une consommation d'énergie inutile.This phase of emptying and stopping the washing machine and drying dishes 1 avoids operation of said machine 1 resulting in unnecessary energy consumption.

Si une commande de départ d'un cycle de nettoyage en départ différé est exécutée au cours de la phase de préchauffage de l'eau du bain de lavage, alors la phase de préchauffage de l'eau du bain de lavage est arrêtée à la fin de la période maximale prédéterminée D2, et l'eau du bain de lavage est conservée dans la cuve 2 pour ledit cycle de nettoyage en départ différé.If a start command of a delayed start cleaning cycle is executed during the preheating phase of the wash bath water, then the prewarming phase of the wash bath water is stopped at the end. of the predetermined maximum period D 2 , and the wash bath water is stored in the tank 2 for said delayed start cleaning cycle.

De cette manière, l'énergie consommée par la machine à laver et sécher la vaisselle 1 n'est pas gaspillée et permet d'exécuter un programme de nettoyage rapidement et avec une faible consommation d'énergie pour chauffer l'eau du bain de lavage. En outre, l'eau introduite dans la cuve 2 est conservée et n'est pas rejetée inutilement.In this way, the energy consumed by the washing machine and drying the dishes 1 is not wasted and allows a cleaning program to be carried out quickly and with low energy consumption to heat the wash bath water. . In addition, the water introduced into the tank 2 is retained and is not rejected unnecessarily.

Ladite phase de chauffage de l'eau du bain de lavage et de circulation de l'eau du bain de lavage peut être précédée d'une phase de remplissage complémentaire d'eau du bain de lavage.Said phase of heating the water of the washing bath and circulating water of the washing bath may be preceded by a complementary water filling phase of the washing bath.

Cette phase de remplissage complémentaire permet d'obtenir la quantité d'eau adéquate pour nettoyer les pièces de vaisselle présentant des salissures non cuites. La quantité d'eau complémentaire peut être ajustée en fonction des paramètres déterminés pour l'exécution du programme de nettoyage.This complementary filling phase makes it possible to obtain the appropriate amount of water for cleaning dishes with uncooked soiling. The amount of additional water can be adjusted according to the parameters determined for the execution of the cleaning program.

Ladite phase de circulation de l'eau du bain de rinçage avec l'introduction d'un produit de rinçage a une durée comprise dans une plage s'étendant entre 1 et 5 minutes, et préférentiellement de l'ordre de 2 minutes.Said phase of circulation of the water of the rinsing bath with the introduction of a rinsing product has a duration in a range extending between 1 and 5 minutes, and preferably of the order of 2 minutes.

Une phase de chauffage de l'eau du bain de rinçage et de circulation de l'eau du bain de rinçage à une température inférieure ou égale à un troisième seuil T3 de l'ordre de 70°C.A phase of heating the water of the rinsing bath and circulation of the water of the rinsing bath at a temperature less than or equal to a third threshold T 3 of the order of 70 ° C.

La phase de vidange de l'eau du bain est réalisée avant l'étape de séchage pour limiter la quantité d'humidité déplacée par ledit au moins un ventilateur afin de sécher efficacement les pièces de vaisselle et en un temps minimum.The phase of draining the bath water is performed before the drying step to limit the amount of moisture displaced by the at least one fan to effectively dry the dishes and in a minimum time.

La phase de séchage par air pulsé du procédé est mise en oeuvre en activant ledit au moins un ventilateur. Ledit au moins un ventilateur permet de mettre en circulation l'air contenu dans la machine à laver et sécher la vaisselle 1 de manière à éliminer les gouttes d'eau des pièces de vaisselle et celles formées aux points de contact entre les pièces de vaisselle et un panier à vaisselle 14a, 14b. L'air pulsé par ledit au moins un ventilateur peut comprendre au moins une partie d'air frais provenant de l'extérieur afin de renouveler l'air enfermé dans la machine à laver et sécher la vaisselle 1 et retirer l'humidité contenue dans celui-ci.The pulsed air drying phase of the process is carried out by activating the at least one fan. Said at least one fan makes it possible to circulate the air contained in the washing machine and drying the dishes 1 so as to remove drops of water from the dishes and those formed at the points of contact between the dishes and a dish rack 14a, 14b. The air pulsed by said at least one fan may comprise at least a portion of fresh air from outside to renew the air enclosed in the washing machine and dry the dishes 1 and remove the moisture contained in that -this.

La durée D1 de la phase de séchage est courte et peut s'étendre dans une plage comprise entre 1 et 5 minutes, et préférentiellement de l'ordre de 2 minutes.The duration D 1 of the drying phase is short and can extend in a range of between 1 and 5 minutes, and preferably of the order of 2 minutes.

En cas de non déchargement des pièces de vaisselle de la machine à laver et sécher la vaisselle 1, une seconde phase de séchage par air pulsé d'une période D3 est exécutée après ladite phase de séchage par air pulsé d'une période D1.In the event of non-discharge of the dishes of the washing machine and drying the dishes 1, a second phase of forced air drying of a period D 3 is carried out after said phase of forced air drying of a period D 1 .

Cette phase de séchage complémentaire permet de maintenir les pièces de vaisselle à une température prédéterminée et de sécher les conduites de séchage reliées audit au moins un ventilateur ainsi que tous les éléments compris à l'intérieur de la cuve 2. Les parois de la cuve 2 sont également séchées et éviter que de l'eau ruisselle sur celle-ci, en particulier sur la paroi intérieure 23 de la porte 4.This complementary drying phase keeps the dishes at a predetermined temperature and drying the drying lines connected to said at least one fan and all the elements included inside the tank 2. The walls of the tank 2 are also dried and prevent water from running on it, in particular on the inner wall 23 of the door 4.

Lesdites première et seconde phases de séchage sont exécutées en continu lorsque la porte 4 machine à laver et sécher la vaisselle 1 est maintenue fermée jusqu'à la fin de la première phase de séchage d'une période D1. L'enchaînement des deux phases de séchage est réalisée sans arrêt dudit au moins un ventilateur.Said first and second drying phases are carried out continuously when the door 4 washing machine and drying dishes 1 is kept closed until the end of the first drying phase of a period D1. The concatenation of the two drying phases is carried out without stopping said at least one fan.

Ladite seconde phase de séchage permet de sécher complètement les pièces de vaisselle chargées dans la cuve 2 de la machine 1.Said second drying phase makes it possible to completely dry the loaded dishes in the tank 2 of the machine 1.

La durée de la phase de séchage complémentaire a une durée D3 s'étendant dans une plage comprise entre 10 et 40 minutes, et préférentiellement de l'ordre de 30 minutes.The duration of the complementary drying phase has a duration D 3 extending in a range between 10 and 40 minutes, and preferably of the order of 30 minutes.

Dès que cette phase de séchage complémentaire s'est terminée, ledit au moins un ventilateur est arrêté.As soon as this complementary drying phase has ended, said at least one fan is stopped.

En outre, ce procédé de nettoyage permet de limiter les agressions chimiques des pièces de vaisselle et de limiter l'usure de celles-ci, notamment par la non utilisation d'un produit de lavage.In addition, this cleaning process makes it possible to limit the chemical attacks of the dishes and to limit the wear thereof, in particular by not using a detergent.

L'introduction des pièces de vaisselle dans la cuve 2 à la suite de la phase de préchauffage du bain de lavage permet de réduire la durée du cycle de nettoyage. Les étapes du procédé selon l'invention permettent de nettoyer immédiatement et efficacement les pièces de vaisselle. Le cycle de nettoyage est actif dès la fin du chargement des pièces de vaisselle dans la cuve 2 et la fermeture de la porte 4 de ladite cuve 2.The introduction of the dishes in the tank 2 following the preheating phase of the wash bath reduces the duration of the cleaning cycle. The steps of the method according to the invention make it possible to immediately and efficiently clean the dishes. The cleaning cycle is active as soon as the loading of the dishes in the tank 2 and the closing of the door 4 of said tank 2 have finished.

La température du bain de lavage en fin de phase de chauffage et de mise en circulation de l'eau du bain de lavage est suffisante pour pallier à tout problème de mousse pouvant être provoqué par l'introduction d'un produit de rinçage dans un bain ayant une température trop basse, c'est-à-dire inférieure à 40°C.The temperature of the washing bath at the end of the heating and circulating phase of the wash bath water is sufficient to overcome any problem of foam that can be caused by the introduction of a rinse in a bath having a temperature too low, that is to say less than 40 ° C.

Les étapes dudit procédé sont mises en oeuvre avec un bain de lavage et de rinçage unique.The steps of said process are carried out with a single washing and rinsing bath.

Ainsi, la consommation en eau est limitée à une quantité d'eau minimum pour réaliser les phases de lavage et de rinçage du procédé. L'utilisation d'un seul bain pour le lavage et le rinçage permet également de diminuer la durée du cycle de nettoyage en évitant une chauffe de l'eau pour chacun des bains de lavage et de rinçage. De ce fait, la consommation en énergie est limitée à la seule chauffe d'un seul bain de lavage et de rinçage.Thus, the water consumption is limited to a minimum amount of water to carry out the washing and rinsing phases of the process. The use of a single bath for washing and rinsing also makes it possible to reduce the duration of the cleaning cycle by avoiding heating the water for each of the washing and rinsing baths. As a result, the energy consumption is limited to the only heating of a single washing and rinsing bath.

On va décrire à présent des moyens d'une machine à laver et à sécher la vaisselle adaptée à mettre en oeuvre le procédé de nettoyage de pièces de vaisselle selon l'invention.We will now describe means of a washing machine and drying dishes adapted to implement the method of cleaning dishes according to the invention.

Une telle machine à laver et sécher la vaisselle 1 comprend au moins un moyen d'arrosage 30 adapté à mettre en circulation l'eau du bain de lavage au cours d'une phase de préchauffage de l'eau du bain de lavage.Such a washing machine and drying dishes 1 comprises at least one watering means 30 adapted to circulate the wash bath water during a preheating phase of the wash bath water.

Ainsi, ledit au moins un moyen d'arrosage 30 permet de chauffer l'air de la cuve 2 et la structure de la machine à laver et sécher la vaisselle 1 en mettant en circulation l'eau du bain de lavage au cours d'une phase de préchauffage. De cette manière, l'eau du bain de lavage est chauffée et maintenue à une température prédéterminée pour permettre de nettoyer les pièces de vaisselle immédiatement et efficacement dès la fin du chargement desdites pièces de vaisselle et la fermeture de la porte 4 obturant la cuve 2.Thus, said at least one watering means 30 makes it possible to heat the air of the tank 2 and the structure of the washing machine and to dry the dishes 1 by circulating the water of the washing bath during a period of time. preheating phase. In this way, the wash bath water is heated and maintained at a predetermined temperature to allow the cleaning of the dishes immediately and effectively as soon as the loading of said dishes and the closing of the door 4 closing the tank 2 are complete. .

Ledit au moins un moyen d'arrosage 30 peut permettre un écoulement d'eau du bain de lavage au cours de la phase de préchauffage sur au moins l'une des parois 17, 18, 19 de la cuve 2 de manière à chauffer l'air contenu dans ladite cuve 2 et à chauffer la structure de la machine 1. La circulation de l'eau du bain de lavage permet de maintenir une température T1 prédéterminée au cours de la phase de préchauffage de manière à permettre un départ immédiat du cycle de nettoyage et ainsi de limiter la durée de ce cycle.Said at least one watering means 30 can allow a flow of water of the washing bath during the preheating phase on at least one of the walls 17, 18, 19 of the tank 2 so as to heat the air contained in said tank 2 and heating the structure of the machine 1. The circulation of the wash bath water maintains a predetermined temperature T 1 during the preheating phase so as to allow an immediate start of the cycle cleaning and thus limit the duration of this cycle.

Ledit au moins un moyen d'arrosage 30 est préférentiellement disposé pour arroser une paroi intérieure 23 de la porte 4 obturant la cuve 2.Said at least one watering means 30 is preferably arranged for watering an inner wall 23 of the door 4 closing the tank 2.

Ainsi, ledit au moins un moyen d'arrosage 30 permet de chauffer l'eau du bain de lavage sans asperger les pièces de vaisselle. Un tel dispositif peut être installé sur une machine à laver et sécher la vaisselle classique ou sur une machine à laver et sécher la vaisselle comprenant deux zones de lavage telles qu'illustrées sur les figures 1 et 2.Thus, said at least one watering means 30 makes it possible to heat the water of the washing bath without spraying the dishes. Such a device can be installed on a washing machine and dry the classic dishes or on a washing machine and dry the dishes comprising two washing areas as illustrated in the drawings. figures 1 and 2 .

Les paniers de vaisselle 14a et 14b peuvent comprendre des façades 24, telles que décrites précédemment et aux figures 1 et 2, afin d'éviter toute aspersion des pièces de vaisselle chargée dans lesdits paniers 14a et 14b.The dish baskets 14a and 14b may comprise facades 24, as previously described, and figures 1 and 2 , to avoid any spraying of parts of dishes loaded in said baskets 14a and 14b.

Ledit au moins un moyen d'arrosage 30 permet de nettoyer la paroi intérieure 23 de ladite porte 4 sans asperger la vaisselle au cours de ladite phase de préchauffage de l'eau du bain de lavage et tout en augmentant la température de la structure de la machine à laver et sécher la vaisselle 1. De cette manière, la machine à laver et sécher la vaisselle 1 est prête à dérouler un cycle de nettoyage de la vaisselle immédiatement. La durée du cycle de nettoyage est ainsi diminuée. Et en particulier, la durée de la phase de chauffage de l'eau du bain de lavage est réduite à une durée minimale.Said at least one watering means 30 makes it possible to clean the inner wall 23 of said door 4 without spraying the dishes during said pre-heating phase of the wash bath water and while increasing the temperature of the structure of the washing machine and drying dishes 1. In this way, the washing and drying machine 1 is ready to unroll a cycle of cleaning the dishes immediately. The duration of the cleaning cycle is thus reduced. And in particular, the duration of the heating phase of the wash bath water is reduced to a minimum duration.

Les pièces de vaisselle sont chargées uniquement dans un panier à vaisselle 14a placé en partie supérieure de la cuve 2.The dishes are loaded only in a dish rack 14a placed in the upper part of the tank 2.

Le chargement des pièces de vaisselle uniquement dans un panier supérieur 14a de la cuve 2 permet d'optimiser la durée du cycle de nettoyage. Les périodes des phases de circulation de l'eau du bain de lavage et de rinçage sont optimisées en utilisant seulement des moyens de pulvérisation 13a destinés à nettoyer les pièces de vaisselle placées dans le panier supérieur 14a de la cuve 2.The loading of the pieces of crockery only in an upper basket 14a of the tank 2 makes it possible to optimize the duration of the cleaning cycle. The periods of the water circulation phases of the washing bath and rinsing are optimized using only spraying means 13a for cleaning the dishes placed in the upper basket 14a of the tank 2.

Le chargement des pièces de vaisselle peut être accompli à tout instant de la phase de préchauffage du bain de lavage, et tout particulièrement au cours de cette phase de préchauffage. Lors de l'ouverture de la porte 4 de la machine à laver et sécher la vaisselle 1, les moyens de pulvérisation 13a et 13b et d'aspersion 30 sont arrêtés pour permettre le chargement des pièces de vaisselle dans au moins un panier à vaisselle 14a ou 14b. Dès la fermeture de la porte 4 de la machine à laver et sécher la vaisselle 1, les moyens de pulvérisation 13a et 13b et d'aspersion 30 sont mis en fonctionnement pour permettre la mise en oeuvre de la phase de chauffage de l'eau du bain de lavage et de circulation de ladite eau du bain de lavage. Le nettoyage des pièces de vaisselle est exécuté dès la fermeture de la porte 4 ou dès que l'ordre est donné aux moyens de commande de la machine à laver et sécher la vaisselle 1 et que le chargement des pièces de vaisselle est terminé. De cette manière, la durée du cycle de nettoyage est minimale tout en garantissant une performance de nettoyage des pièces de vaisselle optimale.The loading of the dishes can be accomplished at any time during the preheating phase of the washing bath, and especially during this preheating phase. When opening the door 4 of the washing machine and drying the dishes 1, the spraying means 13a and 13b and spraying 30 are stopped to allow loading of the dishes in at least one dish rack 14a or 14b. As soon as the door 4 of the washing machine is closed and the dishes 1 are dried, the spraying means 13a and 13b and the spraying means 30 are put into operation in order to allow the heating phase of the water to be carried out. washing bath and circulation of said wash bath water. The cleaning of the pieces of crockery is carried out as soon as the door 4 is closed or as soon as the order is given to the control means of the washing machine and to dry the dishes 1 and the loading of the pieces of crockery is finished. In this way, the duration of the cleaning cycle is minimal while ensuring optimal cleaning performance of the dishes.

Le procédé de nettoyage conforme à l'invention peut être mis en oeuvre dans une machine à laver et sécher la vaisselle telle que décrite précédemment et dans une machine à laver et sécher la vaisselle classique.The cleaning method according to the invention can be implemented in a washing machine and drying the dishes as described above and in a washing machine and drying conventional dishes.

Bien entendu, de nombreuses modifications peuvent être apportées à l'exemple de réalisation décrit précédemment sans sortir du cadre de l'invention.Of course, many modifications can be made to the embodiment described above without departing from the scope of the invention.

Ainsi, la pression des jets d'eau peut être adaptée au chargement des pièces de vaisselle dans un panier à vaisselle afin de limiter les impacts sur celles-ci pouvant entraîner leur endommagement.Thus, the pressure of the water jets can be adapted to the loading of the dishes in a dish rack to limit the impact on them that may lead to their damage.

Le réglage de la pression des jets d'eau peut être réalisée en modifiant le débit de la pompe d'alimentation en eau du circuit hydraulique, ou encore en modifiant la section de passage de l'eau en entrée du circuit hydraulique.The adjustment of the pressure of the water jets can be carried out by modifying the flow of the water supply pump of the hydraulic circuit, or by modifying the water flow section at the inlet of the hydraulic circuit.

Claims (8)

  1. A method for cleaning pieces of dishware exhibiting uncooked grime, particularly cups or glasses, in a dishware washing and drying machine (1), said dishware washing and drying machine (1) comprising a tub (2) closed by a door (4) on its front surface (3), said tub (2) being ventilated by at least one fan, said dishware washing and drying machine (1) comprising at least one heating means to heat the water of a washing and rinsing bath, characterized in that it comprises at least the following steps executed in the order listed:
    - a phase of preheating the washing bath, without loading the pieces of dishware into the tub (2), to a temperature less than or equal to a first threshold (T1) on the order of 60°C;
    - a phase of heating the water of the washing bath and circulating the water of the washing bath, including loading the pieces of dishware into the tub (2), to a temperature less than or equal to a second threshold (T2) on the order of 55°C and without adding a washing product;
    - a phase of circulating the water of the rinsing bath and including adding a rinsing product;
    - a phase of heating the water of the rinsing bath and circulating the water of the rinsing bath at a temperature less than or equal to a third threshold (T3) on the order of 70°C;
    - a phase of emptying the water of the rinsing bath; and
    - a phase of pulsed air-drying over a period (D1).
  2. A method for cleaning pieces of dishware exhibiting uncooked grime according to claim 1, characterized in that the steps of said method are implemented with a single washing and rinsing bath.
  3. A method for cleaning pieces of dishware exhibiting uncooked grime according to claim 1 or 2, characterized in that the phase of preheating the water of the washing bath comprises a step of filling with a set quantity of water, a step of heating the water of the washing bath and a step of circulating the water of the washing bath.
  4. A method for cleaning pieces of dishware exhibiting uncooked grime according to claim 3, characterized in that the phase of preheating the water of the washing bath implements said steps of heating the water of the washing bath and circulating the water of the washing bath for a maximum preset period (D2).
  5. A method for cleaning pieces of dishware exhibiting uncooked grime according to claim 4, characterized in that a step of emptying the water from the washing bath is executed at the end of the maximum preset period (D2) of the phase of preheating the washing bath, and in that said phase of preheating the water of the washing bath is stopped.
  6. A method for cleaning pieces of dishware exhibiting uncooked grime according to claim 4, characterized in that if a start command for a delayed-start cleaning cycle is executed during the phase of preheating the water of the wash bath, then the phase of preheating the water of the washing bath is stopped at the end of the maximum preset period (D2), and the water in the washing bath is kept in the tub (2) for said delayed-start cleaning cycle.
  7. A method for cleaning pieces of dishware exhibiting uncooked grime according to one of claims 1 to 6, characterized in that said phase of heating the water of the wash bath and circulating the water of the wash bath is preceded by an additional phase of filling the wash bath with water.
  8. A method for cleaning pieces of dishware exhibiting uncooked grime according to one of claims 1 to 7, characterized in that if the pieces of dishware are not unloaded from the dishware washing and drying machine (1), a second phase of pulsed-air drying over a period (D3) is executed after said phase of pulsed pulsed-air drying over a period (D1).
EP08103512A 2007-04-20 2008-04-11 Method of cleaning pieces of crockery Active EP1982630B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08103512T PL1982630T3 (en) 2007-04-20 2008-04-11 Method of cleaning pieces of crockery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0702907A FR2915076B1 (en) 2007-04-20 2007-04-20 METHOD FOR CLEANING DISHWASHER PARTS AND WASHING AND DRYING MACHINE.

Publications (2)

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EP1982630A1 EP1982630A1 (en) 2008-10-22
EP1982630B1 true EP1982630B1 (en) 2010-05-26

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EP (1) EP1982630B1 (en)
AT (1) ATE468801T1 (en)
DE (1) DE602008001324D1 (en)
ES (1) ES2345417T3 (en)
FR (1) FR2915076B1 (en)
PL (1) PL1982630T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111839396B (en) * 2020-06-04 2021-11-02 佛山市百斯特电器科技有限公司 Intelligent preheating method and device based on washing equipment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2911678A1 (en) * 1979-03-24 1980-10-02 Licentia Gmbh Dishwasher with program for lightly soiled articles - eliminates special cleaning cycle to reduce water and running costs
US4277290A (en) * 1980-01-25 1981-07-07 American Sterilizer Company Low temperature washing and chemical sanitizing of foodware
US7195023B2 (en) * 2000-12-08 2007-03-27 Appliance Scientific, Inc. Rapid residential dishwasher

Also Published As

Publication number Publication date
EP1982630A1 (en) 2008-10-22
FR2915076B1 (en) 2012-07-27
PL1982630T3 (en) 2010-10-29
ATE468801T1 (en) 2010-06-15
DE602008001324D1 (en) 2010-07-08
ES2345417T3 (en) 2010-09-22
FR2915076A1 (en) 2008-10-24

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