EP2037036B1 - Verfahren zur Regulierung des Wasserdurchflusses während einer Dampferzeugungsphase in einem Wäschetrockner und entsprechender Wäschetrockner - Google Patents

Verfahren zur Regulierung des Wasserdurchflusses während einer Dampferzeugungsphase in einem Wäschetrockner und entsprechender Wäschetrockner Download PDF

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Publication number
EP2037036B1
EP2037036B1 EP08162677A EP08162677A EP2037036B1 EP 2037036 B1 EP2037036 B1 EP 2037036B1 EP 08162677 A EP08162677 A EP 08162677A EP 08162677 A EP08162677 A EP 08162677A EP 2037036 B1 EP2037036 B1 EP 2037036B1
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EP
European Patent Office
Prior art keywords
water
steam generator
steam
water flow
pump
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EP08162677A
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English (en)
French (fr)
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EP2037036A2 (de
EP2037036A3 (de
Inventor
Essaïd RAOUI
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FagorBrandt SAS
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FagorBrandt SAS
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Priority to PL08162677T priority Critical patent/PL2037036T3/pl
Publication of EP2037036A2 publication Critical patent/EP2037036A2/de
Publication of EP2037036A3 publication Critical patent/EP2037036A3/de
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/44—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of conditioning or finishing, e.g. for smoothing or removing creases
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/38—Time, e.g. duration
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/58—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to condensation, e.g. condensate water level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/02—Water supply
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/62—Stopping or disabling machine operation
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers

Definitions

  • the present invention relates to a method of regulating the flow of water supplying a steam generator (see for example the document EP-A-1813709 ).
  • It also relates to a dryer, of the dryer or washer-dryer type for domestic use, adapted to implement the method of regulating the flow of water supplying a steam generator according to the invention.
  • the present invention relates to the field of steam generation and aims to regulate the water supply of a steam generator during a steam generation cycle.
  • the present invention thus aims to evaporate the maximum amount of water introduced into the steam generator while ensuring the safety of the use of a steam generator so as to avoid overheating of at least one heating means allowing the steam generation.
  • Steam generators are already known having a temperature regulation of the heating element for heating and evaporating the water introduced into a steam generator.
  • the steam generator can be supplied with water by a pump.
  • these steam generators have the disadvantage of not regulating the water flow rate of the pump to adapt the flow of water introduced into the steam generator.
  • the steam generator may be overfed or underfed.
  • the amount of water introduced into the steam generator can be partially evaporated and cause a flow of water at the outlet of the steam generator.
  • the water stains on laundry items caused by a water flow from the steam generator to the drum have the disadvantage of moistening the laundry items undergoing a steaming cycle using the steam generation, this steaming cycle having for the purpose of wearing these pieces of linen immediately after said uncreasing cycle.
  • the object of the present invention is to maintain a constant water consumption for a steam generator and to guarantee washing-up performance of the laundry while ensuring the safety of the steam generator.
  • the present invention is directed to a method for regulating the flow of water during a steam generation phase of a machine for drying laundry, said machine for drying the laundry comprising at least one drum mounted in rotation around an axis in a body and a steam generator, said steam generator comprising at least one heating means for heating and evaporating water, said steam generator being connected to a water supply source, said source of water supply being connected to at least one pump for supplying water to said steam generator.
  • the method of regulating the flow of water during a steam generation phase of a laundry drying machine makes it possible to supply water to the steam generator with the water flow rate required at each instant, and in particular at the operation of said steam generator, so as to avoid under-power or over-water.
  • the regulation method according to the invention makes it possible to guarantee the generation of steam necessary in order to optimize the smoothing performance of the laundry.
  • the water introduced into the steam generator is evaporated to prevent any water flow to the drum containing the laundry to be dried and dewaxed. Therefore, the water introduced into the steam generator can not cause water stains on the laundry contained in the drum of the dryer. In this way, the implementation of a scrubbing cycle by the dryer machine according to the method according to the invention allows the user to wear the clothes at the end of a wrinkle cycle.
  • the method of regulating the water flow rate according to the invention makes it possible to guarantee the smoothing performance of the laundry items introduced into the drum for an adjusted amount of steam.
  • This control method also limits the overconsumption of steam generator water and to guarantee the autonomy of the water supply source, which can be formed by a water reserve.
  • the water flow control method according to the invention makes it possible to overcome the dispersions of water flow between different pumps for supplying water to the steam generator, and in particular when said pumps are new.
  • the dispersions of water flow are generally due to the manufacture of these.
  • This method of regulating the flow of water also makes it possible to offset the drift, during the use of the dryer, related to an internal degradation of the pump supplying water to the steam generator.
  • the drifts observed on the pumps supplying the steam generator may be an increase or a decrease in the flow of water.
  • said method of regulating water flow makes it possible to overcome a partial obstruction of the hydraulic circuit supplying the steam generator with water or with said water supply pump.
  • the partial obstruction may be due to a dust or a textile fiber infiltrating the hydraulic circuit feeding the steam generator with water or in said water supply pump.
  • said method of regulating water flow makes it possible to adapt the flow of water to the heating power of the steam generator.
  • a dispersion of the heating power may be due to a heating element constituting the steam generator, or to the supply voltage of the electrical energy of said steam generator.
  • the power supply voltage of the steam generator may be too low compared to the nominal voltage delivered by the electrical network.
  • Said method of regulating water flow makes it possible to overcome the voltage dispersions of the electrical network supplying the dryer machine comprising the steam generator.
  • the heating power of the steam generator is no longer sufficient to evaporate all the water introduced into the steam generator by the water supply pump.
  • the water flow control method makes it possible to evaluate the flow of water introduced into the steam generator by at least one measurement of one or more parameters of the steam generation phase.
  • said method of regulating water flow makes it possible to adjust the water flow rate of the steam generation phase as a function of the result of the evaluation step mentioned above.
  • the evaluation step E1 of the water flow introduced into the steam generator is carried out by measuring an operating time over at least one temperature regulation period of said at least one heating means. steam generator and / or by measuring a filling time of an unsaved water collection tank
  • the water flow regulation method makes it possible to evaluate the flow rate of water introduced into the steam generator either by measuring an operating time over at least one temperature regulation period of the at least one heating means.
  • the steam generator is either by a measurement of a filling time of a non-evaporated water recovery tank or by the combination of these two measurements.
  • a value representative of the flow of water V Q introduced into the steam generator by said at least one pump is obtained and compared with at least a threshold value V s1 or V s2 .
  • the representative value of the flow rate of water V Q introduced into the steam generator is determined by measuring an operating time over at least one temperature regulation period of said at least one heating means of the generator. steam and / or by measuring a filling time of a non-evaporated water recovery tank.
  • the threshold value or values V s1 , V s2 may be different depending on the type of measurement made and correspond to either a measurement of an operating time over at least one temperature regulation period of said at least one heating means of the generator. of steam either to a measurement of a filling time of a non-evaporated water recovery tank, or the combination of these measurements.
  • a laundry drying machine adapted to implement a method of regulating the flow of water during a steam generation phase according to the invention.
  • This machine dryer has similar characteristics and advantages to those described above with reference to the method of regulating water flow during a steam generation phase that it implements.
  • This dryer may be a household clothes dryer or a washer-dryer.
  • the present invention applies to all types of machine for drying clothes, including front loading.
  • This dryer 1 comprises a bodywork comprising an access opening inside the bodywork.
  • An access door is adapted to close this opening of the body of the machine 1, in particular during operation thereof.
  • the access door is pivotally mounted about an axis of rotation integral with the body of the machine 1.
  • the body of the machine 1 is adapted to accommodate a drum 2 which is particularly suitable for drying laundry by a hot air circulation.
  • the drum 2 is rotatable about an axis 3 during the different phases of the drying cycles of the machine.
  • figure 1 is schematic and that many organs necessary for the operation of the machine have been omitted and do not need to be described in detail here.
  • a control panel is also provided in the upper part of the machine 1.
  • the dryer according to the invention comprises all the equipment and means necessary for the implementation of a conventional drying process in such a rotary drum machine.
  • the laundry dryer 1 comprises a steam generator 12 with a water supply by drip.
  • the steam generator 12 is a tube steam generator with a low water flow rate of the order of 20 g / minute.
  • the diameter of the tube of the steam generator 12 is of the order of 8 mm.
  • the steam is produced inside a tube that can be made of aluminum.
  • Said tube is crimped inside an aluminum block and the assembly is heated by at least one shielded heating element 18 itself crimped in the aluminum block.
  • the tube is connected at its outlet to a drying air circuit of the dryer 1 by a hose which may be silicone.
  • a condenser dryer 1 comprises two air circuits.
  • a first air circuit is commonly called hot air circuit 4 and a second air circuit called cold air circuit 5.
  • the hot air circuit 4 is in a closed loop and the air heated by at least one heating element 6.
  • the heated air passes through the laundry contained in the drum 2 and the heated air is charged with the moisture contained by the laundry. During this phase, the air is cooled from a temperature of about 110 ° C to a temperature of about 70 ° C.
  • the heated and moist air passes through a filter 7 placed at a discharge outlet of the drum 2 to recover the lint contained in said heated and moist air.
  • a fan 8 circulates the hot and humid air inside a condenser 9. The hot and humid air is cooled in tubes of the condenser 9 and the humidity of the air is condensed. The condenser 9 is cooled by heat exchange with ambient air. Then, the air is again heated by the at least one heating element 6.
  • the laundry dryer 1 may also be provided with a plate condenser 9 in place of a condenser 9 with tubes.
  • the cold air circuit 5 is in open circuit where ambient air is sucked by a fan 10 at the rear of the dryer 1.
  • the fan 10 propels the ambient air in the condenser 9 and on the outside of the tubes of said condenser 9 in order to cool it.
  • the ambient air heated in the condenser 9 is discharged into a room through a front face of the dryer 1.
  • a motor 11 allows the driving of the drum 2 for brewing the laundry with an alternating rotation to prevent the knotting of the laundry. Said motor 11 can also drive the two fans 8 and 10.
  • Both fans 8 and 10 are centrifugal technology.
  • the air flow is greater in a positive direction relative to a reverse direction said negative.
  • the air flow factor between the positive direction and the negative direction of the fans 8 and 10 is substantially of the order of 3.
  • the water recovered by the condenser 9 can be raised by a pump to a tank placed in the upper part of the machine 1, or recovered by gravity in a tray at the bottom of the machine 1 according to said dryer machine 1 .
  • Said drum 2 contains the laundry to be straightened and is connected to said condenser 9 by a pipe 13.
  • Said condenser 9 is connected to at least one fan 8 by a pipe 14.
  • said at least one fan 8 is connected to said drum 2 by a pipe 15.
  • the drying machine 1 is also equipped with a steam generator 12 supplied with water by a pump 20 coming from a reservoir 17. During the implementation of a laundry cycle, the steam produced by the steam generator 12 is injected into the hot air circuit 4 to moisten the laundry in order to straighten it.
  • the reservoir 17 of the steam generator 12 can be filled by the user with mains water or demineralised water.
  • said steam generator reservoir 12 can be placed in a drum access door 2 of the dryer 1.
  • the laundry cycle unwinds with a rotation of the drum 2 alternating to avoid the knotting of the laundry.
  • the rotation of the drum 2, containing the laundry to be straightened, makes it possible to stir the laundry and to create an exchange between the moist air and the steam and with the laundry.
  • the load of laundry introduced into the drum 2 of the dryer 1 can be mainly dry and creased at the start of a laundry cycle, or wet.
  • the steam generator 12 of a clothes dryer 1 comprises at least one heating means 18 for heating and vaporizing water.
  • Said steam generator 12 is connected to a water supply source 19.
  • At least one pump 20 is capable of circulating water from said water supply source 19 to said steam generator 12.
  • the steam generator 12 of a clothes dryer 1 also comprises at least one temperature control means 21 of said steam generator 12.
  • a clothes drying machine 1 comprises a drum 2, said drum 2 being traversed by drying air from a hot air circuit 4.
  • Said hot air circuit 4 comprises at least one heating element 6 placed in a pipe 15 upstream of said drum 2.
  • Said machine 1 comprises a steam generator 12, said steam generator 12 being supplied with water by a water reserve 17 during the steam generation.
  • a control thermostat 24 of the steam generator 12 is connected in series with at least one safety thermostat 25 of the steam generator 12, as illustrated in FIG. figure 2 .
  • the regulation thermostat 24 of the steam generator 12 makes it possible to maintaining a temperature within said steam generator 12 within a predetermined temperature range and adapted to the operation of the laundry dryer 1 during a cycle using the steam.
  • the operating temperature range of the steam generator 12 extends between 140 ° C and 200 ° C, and preferably of the order of 180 ° C.
  • the safety thermostat 25 of said steam generator 12 makes it possible to cut off the supply of electrical energy to said steam generator 12 if a predefined temperature threshold is exceeded.
  • the operating cutoff temperature of the steam generator 12 in the event of a failure is of the order of 300 ° C.
  • the cycle of the dryer 1 implementing the steam generation is interrupted immediately either by the at least one control thermostat 24 of the steam generator 12 or by said at least one safety thermostat 25 of said steam generator 12.
  • the series connection of said at least one control thermostat 24 of the steam generator 12 and said at least one safety thermostat 25 of said steam generator 12 also makes it possible to detect a fault coming from the control means of the dryer machine. the laundry 1 and / or the electrical supply circuit and water of said steam generator 12.
  • the pump 20 may be a pump placed upstream of the steam generator 12 and downstream of the water supply source 19.
  • Said source of water supply 19 may be a reservoir 17 independent of the steam generator 12 in one embodiment of the invention or a network inlet intake of the network according to another embodiment of the invention .
  • At least one warning means (not shown) of the user is put into operation upon detection of a malfunction of the dryer 1 using a cycle where the steam generator 12 is used.
  • Said at least one warning means may be a light signaling means or a sound signaling means.
  • Said light signaling means may be at least one light emitting diode or an element of a display means such as a liquid crystal screen.
  • Said at least one temperature regulation means 21 may consist of at least one thermostat 24, and preferably two thermostats 24 and 25, such as illustrated at figure 2 .
  • a first thermostat 24 allows the regulation of at least one heating means 18 of the steam generator 12 at a temperature of the order of 180 ° C.
  • the two thermostats 24 and 25 are connected in series to ensure the safety of the steam generator 12.
  • the second thermostat 25 has the function of ensuring the safety of the steam generator 12.
  • the second thermostat 25 is in the open position as soon as the temperature of the steam generator 12 is greater than a predetermined threshold so as to cut off the power supply of the steam generator 12.
  • the state of the first thermostat 24 is controlled by control means of the dryer 1.
  • the control means may consist of at least one microcontroller 22.
  • the state of said at least one open or closed temperature control means 24 is determined by measuring the resistance between the two terminals of said at least one temperature control means 21. Electrical connection wire is required between the output of said at least one temperature control means 21 and the input of at least one microcontroller 22.
  • the state of said at least one open or closed temperature control means 21 is determined by measuring the supply current of the steam generator 12.
  • the structure of said machine 1, in particular the drum 2 must be sufficiently hot to prevent condensation of the steam on the metal parts and / or cold and on said at least one heating element 6.
  • Said at least one heating element 6 could be degraded by the presence of water. In particular in the case where said at least one heating element 6 is unshielded.
  • the hot air circuit 4 makes it possible to minimize steam condensation in order to optimize the consumption of water and the supply of thermal energy.
  • the hot air circuit 4 makes it possible to condense as little steam as possible, coming from the drum 2, in order to consume a minimal quantity of water and to limit the supply of thermal energy.
  • the means used to reduce the efficiency of the condenser 9 is to reduce the flow of ambient air to limit the heat exchange.
  • the efficiency of the condenser 9 with a fan 10 of the cold air circuit 5 rotating in the positive direction is of the order of 70%.
  • the power exchanged in the condenser 9 is of the order of 2000W.
  • the change of direction of rotation of the drum 2 also makes it possible to modify the direction of rotation of the fan 10 and thus to modify the flow of ambient air passing through the condenser 9.
  • a lower air flow generated by the fan 10 creates an exchange less heat between moist warm air and ambient air.
  • the efficiency of the condenser 9 is of the order of 30%.
  • the power exchanged in the condenser 9 is of the order of 800W.
  • the fan 8 of the hot air circuit 4 is also driven by the motor 11 and said fan 8 also rotating in the opposite direction.
  • the hot air circuit 4 has a lower air flow.
  • the power of said at least one heating element 6 is lower to obtain a temperature at the outlet of the pipe 15 substantially identical.
  • a lower hot air flow rate also makes it possible to limit the risk of entrainment of water droplets that can be discharged with the steam in the hot air circuit 4 and consequently to limit the risk of short circuiting of said at least one a heating element 6.
  • the steam generation can be interrupted during the rotation of the drum 2 in said positive direction.
  • the cooling by the condenser 9 is also less important, hence a minimized heat exchange.
  • the steam is introduced and put into circulation in a hot air circuit 4 of the dryer 1 during the steam generation and steam circulation phase of the steam generator 12 to the drum 2.
  • the introduction of steam is regulated by the on and off times of the at least one pump 20 in connection with the steam generator 12.
  • Said at least one pump 20 must be sized to supply water to the steam generator 12 with a water flow rate adapted according to the power of said steam generator 12.
  • the steam generator 12 has a power of the order of 1600 watts and the pump 20 has a flow rate of the order of 20g per minute.
  • the water supply of the steam generator 12 is carried out continuously by the pump 20.
  • the water is not introduced in liquid form into the hot air circuit 4 of the dryer 1 but only in vapor form.
  • the condenser 9 operates at its maximum efficiency during the phase of evacuation of the steam from the drum 2 and cooling the laundry contained in said drum 2.
  • This phase of the laundry unwinding cycle makes it possible to remove the laundry from the drum 2 of the dryer 1 without the evacuation of a cloud of steam when the access door of said machine 1 is opened. in addition, this phase of the cycle prevents the user from burning his hands by removing the laundry from the drum 2.
  • the amount of water injected at each cycle of stripping the laundry in the steam generator 12 is of the order of 200mL to 300mL.
  • the laundry wrinkling cycle in a condensing dryer 1 comprises a steam generator 12, a condenser 9 and a drum 2 housed inside a body.
  • Said drum 2 contains the laundry to be stripped and is connected to said condenser 9 by a pipe 13.
  • Said condenser 9 is connected to at least two fans 8 and 10 each by a pipe 14 and 16.
  • said at least one fan 8 is connected to said drum 2 by a pipe 15.
  • said at least one heating element 6 is used on a single part and in particular that placed in the upstream part in the hot air circuit 4. The use of the upstream part of said at least one heating element 6 makes it possible to avoid the condensation of all of said at least one heating element 6.
  • the upstream portion of said at least one heating element 6 corresponds to the first lower half of said at least one heating element 6 illustrated in FIG. figure 1 .
  • the steam generator 12 is introduced into the pipe 15 connecting the at least one fan 8 to the drum 2.
  • the positioning of the introduction of steam into the pipe 15 connecting the at least one fan 8 to the drum 2 is downstream of the condenser 9 to limit condensation in said condenser 9.
  • the positioning of the introduction of steam into the pipe 15 connecting the at least one fan 8 to the drum 2 is close to a condensate discharge circuit to allow the evacuation of water droplets formed during the generation of vapor in said condensate circuit.
  • the positioning of the introduction of steam into the pipe 15 connecting said at least one fan 8 to the drum 2 is upstream of said at least one heating element 6 to prevent water droplets from forming, the latter can not falling on said at least one heating element 6.
  • a lifting pump 26 is connected downstream to a mobile tank 27 and upstream to a recovery tank 23 condensate water and water not evaporated.
  • the link between the lifting pump 26 and the movable container 27 is formed by a conduit 28 for circulating condensate water.
  • the condensate water circulation pipe 28 opens into an opening 29 formed in the mobile container 27. Said opening 29 can be located in an upper wall 30 of the mobile container 27.
  • the lifting pump 26 is preferably placed inside the recovery tank 23 in order to reduce the space occupied by the hydraulic circuit of the machine 1.
  • Said recovery tank 23 is connected on the other hand to a drying circuit 4 comprising a condenser 9.
  • the connection between the recovery tank 23 and the drying circuit 4 is formed by at least one opening 31 formed in a wall of said tray recovery 23.
  • the recovery tank 23 comprises a reserve of condensate water 32 for supplying condensate water to the mobile tank 27 via the lifting pump 26.
  • the feed pump 20 of the steam generator and the said steam generator 12 are supplied with energy to allow the generation of steam and to introduce the said steam into the drum 2. through the hot air circuit 4.
  • the mobile tank 27 comprises an overflow device 36 discharging the excess condensate water into the condensate water reserve 32 of the recovery tank 23.
  • the condensate water can not overflow the mobile tank 27 when the condensate water is raised by the lifting pump 26 from the collection tank 23 to said mobile tank 27.
  • the overflow device 36 consists of at least one duct 37 extending between the mobile tank 27 and the condensate water reserve 33 of the recovery tank 23.
  • the movable tray 27 may consist of an assembly formed by a support 38 and a reserve 39.
  • the support 38 extends in a longitudinal direction inside the body of the machine 1.
  • the reserve 39 slides inside the support 38 in a translational movement from front to rear of the machine 1.
  • the excess condensate water can flow inside the support 38 of the movable tray 27.
  • the conduit 37 of the overflow device 36 can be connected to the support 38 to allow the flow of surplus condensate water to the recovery tank 23.
  • the recovery tank 23 comprises a device for measuring the level of condensate water 40 to detect the filling of the condensate water reserve 32.
  • the device for measuring the level of condensate water 40 in the recovery tank 23 makes it possible to detect that the condensate water reserve 32 of the recovery tank 23 is filled.
  • the device for measuring the level of condensate water 40 is placed in the condensate water reserve 32 of the recovery tank 23.
  • the condensate water level measuring device 40 comprises a float system 41 and a switch 42.
  • the device for measuring the level of condensate water 40 makes it possible to detect a high level h when the recovery tank 23 is filled with condensate water.
  • the method of regulating the flow of water during a steam generation phase of a clothes drying machine 1 makes it possible to supply water to the steam generator 12 with the water flow rate required at each instant, and in particular to the operation of said steam generator 12, so as to avoid under-power or over-water.
  • the steam generator 12 does not undergo overheating due to under-supply of water.
  • the water introduced into the steam generator 12 is evaporated to prevent any water flow to the drum 2 containing the laundry to be dried and degreased.
  • the water introduced into the steam generator 12 can not cause stains on the laundry contained in the drum 2 of the dryer. linen 1.
  • This regulation method also makes it possible to limit the overconsumption in water of the steam generator 12 and to guarantee the autonomy of the water supply source 19, which can be formed by a reserve of water 17.
  • the water flow control method makes it possible to evaluate the flow of water introduced into the steam generator 12 either by measuring an operating time over at least one temperature regulation period of said at least one means of heating 18 of the steam generator 12 is by a measurement of a filling time of an unvaporated water recovery tank 23 or by the combination of these two measurements. Then, said method of regulating water flow makes it possible to adjust the water flow rate of the steam generation phase as a function of the result of the evaluation step mentioned above.
  • the evaluation step E1 of the water flow introduced into the steam generator 12 may be preceded by a step of emptying the non-evaporated condensate water collection tank 23 by a lifting pump 26 in order to carry out the measurement. a filling time of said non-evaporated water recovery tank 23.
  • the measurement of the operating time of said at least one heating means 18 of the steam generator 12 can be performed on each control period of the latter.
  • the measurement of the operating time of said at least one heating means 18 of the steam generator 12 is taken independently of other measures taken beforehand or subsequently.
  • the measurement of the operating time of said at least one heating means 18 of the steam generator 12 can also be performed over a set of control periods of the latter.
  • the measurement of the operating time of said at least one heating means 18 of the steam generator 12 taken into account by the water flow adjustment means can be an average made from the set of control periods, or the total operating time of said at least one heating means 18 of the steam generator 12 over the set of control periods.
  • a value representative of the flow rate of water V Q introduced into the steam generator 12 by the said at least one pump 20 is obtained and compared with at least one threshold value V s1 or V s2 .
  • the representative value of the flow rate of water V Q introduced into the steam generator 12 is determined by means of the measurement of an operating time over at least one temperature control period of said at least one heating means 18 of the steam generator 12 and / or by measuring a filling time of an unvaporated water collection tank 23.
  • Said representative value of the flow rate of water V Q introduced into the steam generator 12 is determined by the control means of the dryer 1, and in particular by the microcontroller 22.
  • Said representative value of the water flow rate V Q is furthermore determined by means of evaluating the water flow rate 21, 40 introduced into the steam generator 12 by measuring a running time over at least one period of time. temperature regulation of said at least one heating means 18 of the steam generator 12 and / or by measuring a filling time of said non-evaporated water collection tank 23.
  • Said water flow rate evaluation means 21, 40 introduced into the steam generator 12 transmit a signal to the microcontroller 22 of the machine 1 in order to regulate the water flow rate of the pump 20 supplying said steam generator 12.
  • the microcontroller 22 performs a reading of the state of the float 41 of the water level measuring device 40 or the state of the regulation thermostat 24 of the steam generator 12 at a predetermined periodicity, for example of the order 0.1 seconds. Said microcontroller 22 increments a counter each reading if the control thermostat 24 is closed or if the water level in the recovery tank 23 is below the water level h of the float 41. In this way, the duration determined by said microcontroller 22 makes it possible to evaluate the flow rate of water introduced by the pump 20 into the steam generator 12.
  • the dryer 1 also comprises means for adjusting the water flow rate of the steam generation phase as a function of the operating time over at least one temperature control period of said at least one heating means 18 of the steam generator 12 and / or the filling time of said non-evaporated water recovery tank 23.
  • the means for adjusting the water flow rate of the steam generation phase comprise at least the microcontroller 22 forming part of the control means of the dryer 1.
  • the means for adjusting the water flow rate of the steam generation phase also comprise said at least one water supply pump 20 of the steam generator 12.
  • Said at least one threshold value V s1 or V s2 is determined by the dryer manufacturer. This or these threshold values V s1 or V s2 are determined according to the evaluation means 21, 40 of the flow of water introduced into the steam generator 12.
  • the threshold value or values V s1 , V s2 may be different depending on the type of measurement made and correspond to either a measurement of an operating time over at least one temperature control period of said at least one heating means 18 of the steam generator 12 is a measure of a duration of filling of an unvaporated water recovery tank 23, or the combination of these measures.
  • the means for adjusting the water flow rate are controlled by at least the control means of the dryer 1.
  • the microcontroller 22 can regulate the water flow of the pump 20 from the information collected either by the control thermostat 21 of the steam generator 12 or by the water level measuring device 40 placed in an unvaporated water recovery tank 23 or by these two sensors 21 and 40.
  • the adjustment step E2 of the water flow rate is adapted to reduce the water flow rate of the pump 20 corresponding to a supercharging of the water of the steam generator 12, as a function of the comparison of the value representative of the flow of water.
  • the water introduced into the steam generator 12 is evaporated optimally.
  • the water delivered by the pump 20 is evaporated and does not return to the non-evaporated water collection tank 23.
  • the water introduced into the steam generator 12 is evaporated and the steam is then entrained in the hot air circuit 4 of the machine 1 to cross the drum 2 containing the clothes.
  • the adjustment step E2 of the water flow rate is adapted to increase the water flow rate of the pump 20 corresponding to a water underflow of the steam generator 12, as a function of the comparison of the representative value of the flow rate. of water V Q at said at least one threshold value V s1 or V s2 .
  • the steam generator 12 does not undergo overheating due to under-water supply by the pump 20.
  • the service life of the steam generator 12 is not diminished by deteriorations caused by a poor power supply. water.
  • the evaluation step E1 of the water flow introduced into the steam generator 12 by measuring an operating time over at least one temperature control period of said at least one heating means 18 of the steam generator 12 can be implemented by monitoring the operating state of a regulation thermostat 21 of said steam generator 12.
  • the control means of the dryer 1 may comprise at least one microprocessor 22 for determining the closing time of the regulation thermostat 21.
  • the closing time of the regulation thermostat 21 of the steam generator 12 makes it possible to regulate the flow of water during a steam generation phase of the dryer 1.
  • the closing time of the regulation thermostat 21 of the steam generator 12 is compared with at least one threshold value and preferably with at least two threshold values V s1 or V s2 .
  • a first threshold value V s1 corresponds to a minimum closing time of the regulation thermostat 21 and a second threshold value V s2 corresponds to a maximum closing time of the regulation thermostat 21.
  • the second threshold value V s2 maximum can extend in a range between 150 seconds and 190 seconds, and preferably of the order of 170 seconds.
  • the heating power of said steam generator 12 is not sufficient to evaporate the flow of water introduced into said steam generator 12. Therefore, the operating temperature of the generator of The steam 12 is lower than the opening temperature, also called the trip temperature, of the regulation thermostat 21 of the steam generator 12. The regulation thermostat 21 of the steam generator 12 remains closed during this entire period.
  • Such operation of the steam generator 12 is detected by the first evaluation step E1 of the method according to the invention. Then, an adjustment step E2 of the water flow introduced into the steam generator 12 is carried out to ensure that the flow rate of water introduced into said steam generator 12 is completely evaporated.
  • the first threshold value V s1 minimum can extend in a range between 70 seconds and 110 seconds, and preferably of the order of 90 seconds.
  • the temperature rise of the steam generator 12 is too fast compared to the water flow delivered by the pump 20.
  • the regulation thermostat 21 detects an operating temperature of the steam generator 12 at least equal to the opening temperature. Therefore, the control thermostat 21 interrupts the power supply of the steam generator 12 to prevent malfunction and / or damage to the components of the dryer 1.
  • Such operation of the steam generator 12 is detected by the first evaluation step E1 of the method according to the invention. Then, an adjustment step E2 of the water flow introduced into the steam generator 12 is implemented to ensure that the flow of water introduced into said steam generator 12 is sufficient.
  • the adjustment step E2 of the flow of water introduced into the steam generator 12 can be carried out according to a percentage of a predefined duration of operation of a pump 20 supplying the steam generator 12 with water.
  • the regulation of the water flow rate of the pump 20 is obtained by the succession of operating and stopping sequences of said pump 20 supplying water to the steam generator 12.
  • the operating and stopping sequences of the pump 20 supplying water to the steam generator 12 are defined according to the closing time of the regulation thermostat 21 of the steam generator 12.
  • Said water flow adjustment means adapt the regulation of the water flow by alternating periods of operation and periods of stopping said at least one pump 20 to supply water to the steam generator 12.
  • the closing time of the regulation thermostat 21 of the steam generator 12 is adapted by adjusting the water flow rate of the pump 20 of the steam generator 12 to the time required to heat the steam generator 12 and evaporate the water introduced in the latter.
  • the closing time of the regulation thermostat 21 of the steam generator 12 depends on the heating power of the heating element 18 constituting the steam generator 12 and the power required to heat the water introduced by the pump 20 into said generator of steam 12 and evaporate said water.
  • the increase or decrease in the water flow rate of the pump 20 supplying the steam generator 12 with water may be a fraction of the percentage of the predefined duration of operation of said pump 20.
  • Said fraction of the percentage of the predefined duration of operation of said pump 20 for increasing or decreasing the flow of water may range from 1% to 15%, and preferably of the order of 10%. .
  • the increase and decrease of the water flow rate of the pump 20 corresponding to a fraction of the percentage of the predefined operating time of the pump 20 extend within a range defined by a maximum threshold value and a minimum threshold value.
  • the maximum threshold value of the increase in the water flow corresponds to a fraction of the percentage of the predefined operating time of the pump 20 substantially equal to 100%.
  • the minimum threshold value of the decrease in the water flow rate corresponds to a fraction of the percentage of the predefined operating time of the pump 20 in a range extending between 10% and 40%, and preferably of the order of 30%. %.
  • the water flow of the pump 20 is predetermined to a certain value so as to supply said steam generator 12 in sufficient quantity of water.
  • the value of the water flow rate of the pump 20 may be defined according to the nominal operating conditions of said pump 20, the steam generator 12 and the voltage of the electrical network supplying the dryer 1.
  • the flow of water introduced into the steam generator 12 is adjusted according to the result of the evaluation step E1.
  • the initial water flow of the pump 20 supplying the steam generator 12 with water may also be a fraction of the percentage of the predefined duration of operation of said pump 20.
  • the fraction of the percentage of the predefined duration of operation of said pump 20 during operation of the steam generator 12 may be in a range extending between 60% and 90%, and preferably of the order of 80% .
  • said fraction of the percentage of the predefined duration of operation of said pump 20 during operation of the steam generator 12 may be predefined at the factory by the dryer manufacturer.
  • said fraction of the percentage of the predefined duration of operation of said pump 20 during operation of the steam generator 12 may be predefined with respect to the last percentage of the operating time of said pump 20 during a previous cycle of use of the dryer 1.
  • the steam generation phase is divided into unit time periods, and the water flow adjustment means controls the periods of operation of said at least one pump 20 proportionally to the unit time periods.
  • the predefined duration of operation of said pump 20 may be in a range extending between 1 and 5 seconds, and preferably 1 second.
  • the pump 20 can be put into operation for example for 0.5 seconds corresponding to a fraction of 50% of the predefined duration of operation of said pump 20. Then, said pump 20 is stopped 0.5 seconds corresponding to a fraction of 50 % of the predefined duration of operation of said pump 20.
  • the pump 20 of the steam generator 12 operates at its maximum flow rate, ie 100% of the operating time of said pump 20, and the flow of water supplied to said steam generator 12 is not sufficient. during one or more steam generation phases of a steaming cycle, the duration of the generation of steam produced by the steam generator 12 of the dryer 1 is increased.
  • a steaming cycle using the steam generation is cut into phases during which the steam generator 12 and the pump 20 are turned on or off.
  • the increase in the steam generation time during a wrinkle-free cycle can be performed during initially planned phases without steam generation by the dryer manufacturer.
  • steam generation phases are systematically implemented during a freeze cycle. That is to say, these steam generation phases are implemented regardless of the flow rate of water supplied by the pump 20 to the steam generator 12 during a wrinkle-free cycle. These steam generation phases can be referred to as systematic steam generation phases.
  • certain phases of the anti-crease cycle may be subject to conditions of at least one parameter depending on the steam generation for the use of the steam generation.
  • the parameter that can be taken into consideration is the operating time over at least one temperature control period of at least one heating means 18 of the steam generator 12.
  • the pump 20 operates at its maximum flow rate for the duration of at least one systematic steam generation phase and the measurement of the operating time over at least one temperature control period. of said at least one heating means 18 of the steam generator 12 is lower than a threshold value V S3 , then the steam generation is carried out during at least one phase of the unwinding cycle initially provided by the manufacturer without the use of steam generation.
  • Said at least one phase of the anti-crease cycle mentioned above is conditioned by the measurement of the operating time over at least one temperature control period of said at least one heating means 18 of the steam generator 12.
  • the control means of a clothes drying machine 1 and in particular a microcontroller 22 verifies that the pump 20 operates at its maximum flow rate during the entire steam generation period initially provided by the manufacturer and that the measurement of the duration of the operation over at least one temperature control period of said at least one heating means 18 of the steam generator 12 is less than a threshold value V S3 .
  • the use of the steam generation is carried out during at least one phase of a steaming cycle initially provided without generating steam. During this phase, the microcontroller 22 controls the operation of the steam generator 12 and the pump 20.
  • the steam generation during a conditioned phase is carried out when the pump 20 operates at its maximum flow rate for the duration of at least one systematic steam generation phase and the measurement of the operating time on at least one a temperature control period of said at least one heating means 18 of the steam generator 12 is less than a threshold value V S3 .
  • the threshold value V S3 is lower than the threshold value V S2 .
  • the generation of steam during a conditioned phase is implemented when the measurement of the operating time over at least one temperature regulation period of said at least one heating means 18 of the steam generator 12 is significantly lower than the threshold value V S2 and not at the limit of the threshold value V S2 .
  • the steam generation is carried out during a first conditioned phase and the measurement of an operating time over at least one temperature regulation period of said at least one heating means 18 of the steam generator 12 is less than at a threshold value V S4 , then the steam generation is carried out during a second conditioned phase.
  • the operating principle of the steam generator 12 and the pump 20 can be repeated on several conditioned phases, which can be three in a laundry cycle.
  • Measurements of an operating time over at least one temperature regulation period of said at least one heating means 18 of the steam generator 12 are compared respectively with threshold values V s3 , V s4 and V s5 for each of said three phases. conditioned that can implement the steam generation.
  • the duration of a conditioned phase extends in a range of between 30 seconds and 3 minutes, and preferably one minute.
  • Each of the threshold values V s3 , V s4 and V s5 is assigned to a conditioned phase that can implement the steam generation.
  • the threshold values V s3 , V s4 and V s5 can, for example, take respectively the following values: 55 seconds, 40 seconds and 30 seconds.
  • the heating power of the steam generator 12 makes it possible to evaporate a predefined quantity of water.
  • the flow rate of water that can be evaporated is of the order of 30 g / min at the most.
  • the excess water that has not evaporated is discharged into a water collection tank 23.
  • the steam generator 12 is connected to a ventilation duct 4 and the latter is connected to the water collection tank 23.
  • the circulation of the surplus water not evaporated can be ensured by an inclination of the ventilation duct 4 in order to discharge this excess water in the water collection tank 23 and not in the drum 2.
  • the drum 2 can be placed above the ventilation duct 4 to prevent water not evaporated by the steam generator 12 from entering said drum 2.
  • the steam generator 12 is connected to a ventilation duct 4 for drying the laundry contained in the drum 2. Therefore, the steam created in the steam generator 12 is driven by the flow of steam. air circulating in the ventilation duct 4 of the dryer 1 and introduced into the drum 2.
  • the excess water that has not been evaporated can also be discharged into the ventilation duct 4 of the clothes drying machine 1 and then into a water collection tank 23, also called intermediate tray.
  • This water recovery tank 23 can also be used to recover the condensate water generated by a condenser 9 in a condensing dryer 1. The surplus water that is not evaporated and the condensate water are then mixed. in the water collection tank 23.
  • the water recovery tank 23 is positioned in such a way that the excess water that has not evaporated can not be introduced into the drum 2.
  • the water recovery tank 23 is equipped with a water level measuring device 40, such as a float 41 equipped with a switch 42.
  • the water level measuring device 40 makes it possible to detect a water level 40. high level h corresponding to the said water collection tank 23 is full.
  • the water recovery tank 23 may be connected to a second tank 27 said movable tray.
  • the water from the recovery tank can be raised in the mobile tank 27 by means of a lifting pump 26 placed in the water collection tank 23.
  • the evaluation step E1 of the water flow introduced into the steam generator 12 is determined by measuring the filling time of the water collection tank.
  • the filling time of the water collection tank corresponds to the duration of detection of the high level h of the water level measuring device 40 placed in the water collection tank 23 following the accumulation of water not evaporated by the steam generator 12.
  • the lift pump 26 placed in the water collection tank 23 raises all the water contained in said recovery tank 23.
  • the water collection tank 23 is emptied.
  • the operating cycle of the dryer 1 using steam generation is carried out without using the lift pump 26.
  • the filling time of the water collection tank 23 is initialized from the moment when the pump 20 of the steam generator 12 is put into operation.
  • the duration of filling of the recovery tank 23 corresponds to the duration from the triggering of the pump 20 of the steam generator 12 until the detection of the water collection tank 23 full by the water level measuring device 40.
  • the control means of the dryer 1 may comprise at least one microprocessor 22 for determining the duration of filling of the water collection tank 23.
  • the filling time of the water recovery tank 23 makes it possible to regulate the flow of water during a steam generation phase of the dryer 1.
  • the filling time of the water recovery tank 23 is compared with at least one threshold value and preferably with at least two threshold values V s1 or V s2 .
  • a first threshold value V s1 corresponds to a minimum duration of filling of the water collection tank 23 and a second threshold value V s2 corresponds to a maximum duration of filling of the water collection tank 23.
  • the second threshold value V s2 maximum can extend in a range between 270 seconds and 350 seconds, and preferably of the order of 300 seconds.
  • the temperature rise of the steam generator 12 is too fast compared to the water flow delivered by the pump 20.
  • the amount of water not evaporated by the steam generator 12 and flowing into the intermediate tray of water not evaporated 23 is low.
  • the level measuring device 40 does not trip before the first threshold value V s1 . Therefore, the water level meter 40 cuts off the electrical power supply of the generator of Steam 12 to prevent malfunction and / or damage to the components of the dryer 1.
  • Such operation of the steam generator 12 is detected by the first evaluation step E1 of the method according to the invention. Then, an adjustment step E2 of the water flow introduced into the steam generator 12 is implemented to ensure that the flow of water introduced into said steam generator 12 is sufficient.
  • the first threshold value V s1 minimum can extend in a range between 170 seconds and 220 seconds, and preferably of the order of 200 seconds.
  • the heating power of said steam generator 12 is not sufficient to evaporate the quantity of water introduced into the steam generator 12. said steam generator 12. Therefore, the flow of water introduced into the steam generator 12 is not evaporated and it is discharged into the water collection tank 23 until the triggering of the level measurement device water 40 reaching the high level h predefined by the manufacturer of dryers.
  • the lifting pump 26 is put into operation to empty the tank 23 and discharge the water to the mobile tank 27.
  • Such operation of the steam generator 12 is detected by the first evaluation step E1 of the method according to the invention. Then, an adjustment step E2 of the water flow introduced into the steam generator 12 is implemented to ensure that the flow of water introduced into said steam generator 12 is completely evaporated.
  • the adjustment step E2 of the flow of water introduced into the steam generator 12 can be carried out according to a percentage of a predefined duration of operation of a pump 20 supplying the steam generator 12 with water.
  • Said water flow adjustment means adapt the regulation of the water flow by alternating periods of operation and periods of stopping said at least one pump 20 to supply water to the steam generator 12.
  • the regulation of the water flow rate of the pump 20 is obtained by the succession of operating and stopping sequences of said pump 20 supplying water to the steam generator 12.
  • the operating and stopping sequences of the pump 20 supplying water to the steam generator 12 are defined according to the filling time of the water collection tank 23.
  • the filling time of the water recovery tank 23 is adapted by adjusting the water flow rate of the pump 20 of the steam generator 12 to the time necessary to heat the steam generator 12 and evaporate the water introduced into this last.
  • the filling time of the water recovery tank 23 depends on the heating power of the heating element 18 constituting the steam generator 12 and the power required to heat the water introduced by the pump 20 into said steam generator 12 and evaporating said water.
  • the increase or decrease in the water flow rate of the pump 20 supplying the steam generator 12 with water may be a fraction of the percentage of the predefined duration of operation of said pump 20.
  • Said fraction of the percentage of the predefined duration of operation of said pump 20 for increasing or decreasing the flow of water may range from 1% to 15%, and preferably of the order of 10%. .
  • the increase and decrease of the water flow rate of the pump 20 corresponding to a fraction of the percentage of the predefined operating time of the pump 20 extend within a range defined by a maximum threshold value and a minimum threshold value.
  • the maximum threshold value of the increase in the water flow corresponds to a fraction of the percentage of the predefined operating time of the pump 20 substantially equal to 100%.
  • the minimum threshold value of the decrease in the water flow rate corresponds to a fraction of the percentage of the predefined operating time of the pump 20 in a range extending between 10% and 40%, and preferably of the order of 30%. %.
  • the water flow of the pump 20 is predetermined to a certain value so as to supply said steam generator 12 in sufficient quantity of water.
  • the flow of water introduced into the steam generator 12 is adjusted according to the result of the evaluation step E1.
  • the initial water flow rate of the pump 20 supplying the steam generator 12 with water can also be a fraction of the percentage of the predefined duration of operation of said pump 20.
  • the fraction of the percentage of the predefined duration of operation of said pump 20 during operation of the steam generator 12 can be in a range extending between 60% and 90%, and preferably of the order of 80%.
  • said fraction of the percentage of the predefined duration of operation of said pump 20 during operation of the steam generator 12 may be predefined at the factory by the dryer manufacturer.
  • said fraction of the percentage of the predefined duration of operation of said pump 20 during operation of the steam generator 12 may be predefined with respect to the last percentage of the operating time of said pump 20 during a previous cycle of use of the dryer 1.
  • the steam generation phase is divided into unit time periods, and in that the water flow adjustment means controls the periods of operation of said at least one pump 20 proportionally to the unit time periods.
  • the predefined duration of operation of said pump 20 may be in a range extending between 1 and 5 seconds, and preferably 1 second.
  • the pump 20 can be put into operation for example for 0.5 seconds corresponding to a fraction of 50% of the predefined duration of operation of said pump 20. Then, said pump 20 is stopped 0.5 seconds corresponding to a fraction of 50 % of the predefined duration of operation of said pump 20.
  • the condensate water from the condenser 9 can be taken into consideration with respect to the condensate water from the steam generator 12.
  • the condensate water of the condenser 9 and the condensate water of the steam generator 12 are mixed.
  • the quantity of water discharged from the condenser 9 to the recovery tank 23 may be defined by the dryer manufacturer in order to adapt the threshold values V s1 and V s2 allowing the evaluation of the flow of water introduced into the steam generator 12.
  • the flow of water introduced into the steam generator 12 is proportional to the duration of an operating measurement over at least one temperature control period of said at least one heating means 18 of the steam generator 12, either proportional to the duration of a filling measurement of an unvaporated water recovery tank 23, or proportional to a combination of the measured times.
  • the evaluation step E1 of the water flow introduced into the steam generator 12 can also be carried out by measuring the temperature of said steam generator 12, for example by a temperature probe, or by a measurement the current absorbed by said steam generator 12 to determine the duration of the control period of said at least one heating means 18 of said steam generator 12.

Claims (10)

  1. Verfahren zur Regulierung des Wasserdurchsatzes während einer Dampferzeugungsphase eines Wäschetrockners (1), wobei der besagte Wäschetrockner (1) mindestens eine in einem Gehäuse drehbar um eine Achse (3) montierte Wäschetrommel (2) und einen Dampferzeuger (12) umfasst, wobei der besagte Dampferzeuger (12) mindestens ein Heizmittel (18) zum Aufheizen und Verdampfen des Wassers umfasst, wobei der besagte Dampferzeuger (12) an eine Wasserversorgungsquelle (19) angeschlossen ist, wobei die besagte Wasserversorgungsquelle (19) an mindestens eine Pumpe (20) angeschlossen ist, um den besagten Dampferzeuger (12) mit Wasser zu versorgen, dadurch gekennzeichnet, dass das besagte Verfahren mindestens die folgenden Schritte umfasst:
    - Bewerten (E1) des in den Dampferzeuger (12) eingelassenen Wasserdurchsatzes durch mindestens eine Messung eines oder mehrerer Parameter der Dampferzeugungsphase; und
    - Justieren (E2) des Wasserdurchsatzes der Dampferzeugungsphase entsprechend dem Ergebnis des Bewertungsschritts (E1).
  2. Verfahren zur Regulierung des Wasserdurchsatzes nach Anspruch 1, dadurch gekennzeichnet, dass während des Schrittes der Bewertung (E1) des in den Dampferzeuger (12) eingelassenen Wasserdurchsatzes ein Wert, welcher für den von der besagten mindestens einen Pumpe (20) in den Dampferzeuger (12) eingeführten Wasserdurchsatz (VQ) repräsentativ ist, erhalten und mit mindestens einem Grenzwert (VS1, VS2) verglichen wird.
  3. Verfahren zur Regulierung des Wasserdurchsatzes nach Anspruch 2, dadurch gekennzeichnet, dass der Schritt des Justierens (E2) des Wasserdurchsatzes dazu bestimmt ist, den Wasserdurchsatz der Pumpe (20) gemäß dem Vergleich des für den Wasserdurchsatz (VQ) repräsentativen Wertes mit mindestens einem Grenzwert (VS1, VS2) zu verringern oder zu erhöhen, welches jeweils einer Überversorgung oder einer Unterversorgung des Dampferzeugers (12) entspricht.
  4. Verfahren zur Regulierung des Wasserdurchsatzes nach einem beliebigen der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Schritt des Bewertens (E1) des in den Dampferzeuger (12) eingelassenen Wasserdurchsatzes durch eine Messung der Betriebsdauer über mindestens eine Temperaturregulierungsperiode des besagten mindestens einen Heizmittels (18) des Dampferzeugers (12) und/oder durch eine Messung einer Fülldauer eines Sammelbehälters (23) für nicht verdampftes Wasser erfolgt.
  5. Wäschetrockner (1), dadurch gekennzeichnet, dass er dazu ausgelegt ist, das Verfahren zur Regulierung des Wasserdurchsatzes nach einem beliebigen der Ansprüche 1 bis 4 durchzuführen.
  6. Wäschetrockner (1) nach Anspruch 5, mit mindestens einer in einem Gehäuse drehbar um eine Achse (3) montierten Wäschetrommel (2) und einem Dampferzeuger (12), wobei der besagte Dampferzeuger (12) mindestens ein Heizmittel (18) zum Aufheizen und Verdampfen des Wassers umfasst, wobei der besagte Dampferzeuger (12) an eine Wasserversorgungsquelle (19) angeschlossen ist, wobei die besagte Wasserversorgungsquelle (19) an mindestens eine Pumpe (20) angeschlossen ist, um den besagten Dampferzeuger (12) mit Wasser zu versorgen, dadurch gekennzeichnet, dass der Wäschetrockner umfasst:
    - Mittel zur Bewertung (21, 40) des in den Dampferzeuger (12) eingelassenen Wasserdurchsatzes; und
    - Mittel zur Justierung (20, 22) des Wasserdurchsatzes der Dampferzeugungsphase.
  7. Wäschetrockner (1) nach Anspruch 6, dadurch gekennzeichnet, dass die besagten Mittel zur Bewertung des in den Dampferzeuger (12) eingelassenen Wasserdurchsatzes einen Regelthermostat (21) des besagten Dampferzeugers (12) umfassen, welcher dazu ausgelegt ist, eine Betriebsdauer über mindestens eine Temperaturregelungsperiode des besagten mindestens einen Heizmittels (18) des besagten Dampferzeugers (12) zu erkennen.
  8. Wäschetrockner (1) nach Anspruch 6, dadurch gekennzeichnet, dass die besagten Mittel zur Bewertung des in den Dampferzeuger (12) eingelassenen Wasserdurchsatzes eine in einem Sammelbehälter (23) für nicht verdampftes Wasser angeordnete Vorrichtung zur Messung des Wasserstands (40) umfassen, welche dazu ausgelegt ist, einen Wasserstand zu erkennen, um eine Fülldauer des besagten Sammelbehälters (23) für nicht verdampftes Wasser zu kalkulieren.
  9. Wäschetrockner (1) nach einem beliebigen der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass die besagten Mittel zur Justierung des Wasserdurchsatzes die Regulierung des Wasserdurchsatzes durch ein Alternieren von Einschaltperioden und Stillstandperioden der besagten mindestens einen Pumpe (20) für die Versorgung des Dampferzeugers (12) mit Wasser anpassen.
  10. Wäschetrockner (1) nach Anspruch 9, dadurch gekennzeichnet, dass die Phase der Dampferzeugung in einheitliche Zeitperioden unterteilt ist, und dass die Mittel zur Justierung des Wasserdurchsatzes die Einschaltperioden der mindestens einen Pumpe (20) proportional zu den einheitlichen Zeitperioden steuern.
EP08162677A 2007-08-24 2008-08-20 Verfahren zur Regulierung des Wasserdurchflusses während einer Dampferzeugungsphase in einem Wäschetrockner und entsprechender Wäschetrockner Active EP2037036B1 (de)

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PL08162677T PL2037036T3 (pl) 2007-08-24 2008-08-20 Sposób regulacji przepływu wody podczas fazy wytwarzania pary w maszynie do suszenia bielizny oraz maszyna do suszenia bielizny

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FR0706011A FR2920161B1 (fr) 2007-08-24 2007-08-24 Procede de regulation de debit d'eau durant une phase de generation de vapeur d'une machine a secher le linge et machine a secher le linge

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EP2037036A2 EP2037036A2 (de) 2009-03-18
EP2037036A3 EP2037036A3 (de) 2009-03-25
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AT (1) ATE460528T1 (de)
DE (1) DE602008000789D1 (de)
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Publication number Priority date Publication date Assignee Title
CA2362092A1 (en) * 2000-11-16 2002-05-16 Sunbeam Products, Inc. Clothes steamer
KR100500887B1 (ko) * 2003-08-13 2005-07-14 엘지전자 주식회사 드럼 세탁기의 증기발생장치 및 그 방법
KR101139250B1 (ko) * 2006-01-26 2012-05-14 삼성전자주식회사 증기발생장치를 갖춘 세탁기 및 그 제어방법

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DE602008000789D1 (de) 2010-04-22
EP2037036A2 (de) 2009-03-18
ATE460528T1 (de) 2010-03-15
PL2037036T3 (pl) 2010-08-31
FR2920161A1 (fr) 2009-02-27
EP2037036A3 (de) 2009-03-25
FR2920161B1 (fr) 2009-10-09

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