EP3405610B1 - Procédé de fonctionnement d'un séchoir avec une pompe à chaleur et rinçage d'un échangeur de chaleur et séchoir - Google Patents

Procédé de fonctionnement d'un séchoir avec une pompe à chaleur et rinçage d'un échangeur de chaleur et séchoir Download PDF

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Publication number
EP3405610B1
EP3405610B1 EP16781825.1A EP16781825A EP3405610B1 EP 3405610 B1 EP3405610 B1 EP 3405610B1 EP 16781825 A EP16781825 A EP 16781825A EP 3405610 B1 EP3405610 B1 EP 3405610B1
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EP
European Patent Office
Prior art keywords
flushing
condensate
heat
heat exchanger
dryer
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Application number
EP16781825.1A
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German (de)
English (en)
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EP3405610A1 (fr
Inventor
Ralf BÖMMELS
Marcus Simon
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Priority to PL16781825T priority Critical patent/PL3405610T3/pl
Publication of EP3405610A1 publication Critical patent/EP3405610A1/fr
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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
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/206—Heat pump arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • 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
    • D06F2105/26—Heat pumps
    • 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
    • D06F2105/50—Starting machine operation, e.g. delayed start or re-start after power cut
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • 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
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity

Definitions

  • the invention relates to a method for operating a dryer with a heat pump and internal flushing of at least one heat exchanger and a dryer suitable for carrying out this method.
  • the invention relates in particular to a method for operating a dryer with a heat pump and internal rinsing of at least one heat exchanger, the dryer having a drum for holding wet laundry items, a heat pump having a heat sink as a heat exchanger and a heat source, a condensate pan, a condensate container, a condensate pump Transport of an aqueous liquid from the condensate trough to the condensate container, a flushing device connected to the condensate container for at least one of the heat exchangers, a blower for conveying process air in a process air duct and a control device.
  • the invention also relates to a dryer suitable for carrying out this method.
  • a dryer air (so-called process air) is passed through a fan via a heater into a drying chamber, usually a drum, which contains moist objects.
  • the hot air absorbs moisture from the objects to be dried.
  • the then moist process air is passed into a heat exchanger, which can be preceded by a filter, in particular a fluff filter, for filtering out dirt particles, in particular fluff in the case of a clothes dryer or washer dryer.
  • the condensate accumulating in the heat exchanger is usually collected in a condensate pan and passed on to a condensate container for disposal.
  • a condensation dryer hereinafter referred to as "dryer”.
  • This drying process is very energy-intensive, since the heat that is supplied to the process air before the objects to be dried are applied to the process air is cooled when the process air is cooled in the heat exchanger.
  • This energy loss can be significantly reduced by using a heat pump.
  • the heat pump can serve to extract heat from the process air flowing out of the moist objects, which acts on a corresponding heat sink, and to lead this heat by means of a suitable pump device to a heat source from which it reaches the process air before it acts on the objects to be dried , Alternatively, heat can also be taken from the surroundings of the dryer by means of the heat sink and supplied to the process air via the heat source.
  • a compressor-type heat pump also referred to herein as a "compressor type”
  • the cooling of the warm, moisture-laden process air takes place essentially in an evaporator of the heat pump, which acts as a heat sink, where the heat transferred to evaporate a circulating refrigerant is used in the heat pump.
  • the evaporated refrigerant reaches the compressor and is compressed there.
  • the refrigerant circulating in the refrigerant circuit is driven by the compressor, so that the compressor supplies the energy required to operate the pumping process. It goes from the compressor to the condenser, where it is liquefied with the release of heat. The heat released heats the process air.
  • the liquefied refrigerant flows through a restrictor, where its internal pressure is reduced, back to the evaporator, which closes the circuit.
  • the throttle can be implemented in particular as a valve, orifice or capillary.
  • the heat pump circuit is often operated under capillary tube control.
  • the condensed water is then generally collected in a suitable container.
  • the heat exchanger is often removable, especially if it is designed as an air-air heat exchanger. In these cases it can be removed for cleaning and, after removing adhering fluff, for example by rinsing with water, put it back in the dryer.
  • a heat sink of a heat pump is used as the heat exchanger, since the components of a heat pump are generally firmly connected to one another in a dryer.
  • dryers with an internal cleaning option for the heat exchanger were developed. In order to achieve a sufficient cleaning effect, it is known to pass the collected condensate gushing through the heat exchanger in order to clean it.
  • the publication DE 10 2008 006 347 A1 describes a condensation dryer with a drying chamber for objects to be dried, a process air duct in which there is a heater for heating the process air, a heat exchanger for cooling the process air after passing through the drying chamber and a blower for conveying the process air, and a controller, whereby it has the first means for detecting a cleaning requirement for the heat exchanger.
  • the publication reveals DE 10 2010 031265 A1 a dryer with a counting device for registering a number of drying programs carried out, the counting device being able to record at least one counter reading n i with i ⁇ 1.
  • a cleaning method that is adaptable to the degree of soiling would be desirable, in particular one in which rinsing with an aqueous liquid is improved.
  • a condensation dryer referred to herein as "dryer”
  • a heat pump in which cleaning of at least one heat exchanger with an aqueous liquid can be carried out more flexibly and efficiently.
  • the invention is intended to enable at least one heat exchanger of the dryer which is contaminated with lint to be cleaned in an improved manner using condensate from a condensate pan of the dryer.
  • a dryer in the sense of the present invention is a dryer per se or a washer dryer, that is to say a device which can be used both for washing and for drying items of laundry.
  • drying program and “drying process” are used interchangeably.
  • a condensate pan is understood here to mean in particular a three-dimensional body which is located below the evaporator and which can collect the condensate arising in the process air duct during the heat exchange with the moist, warm process air.
  • the condensate pan is generally located in the floor pan.
  • the heat pump has two heat exchangers, namely a heat sink and a heat source, and additionally a pump device which pumps heat energy from the heat sink to the heat source.
  • a heat sink heat energy is extracted from the process air used in the drying process; Thermal energy is added to this process air in the heat source.
  • the pump device is a circuit in which a working fluid, usually referred to as a refrigerant, is driven by a compressor and circulates between the heat source and the heat sink.
  • the working fluid is liquefied in the heat source, which the working fluid flows in from the compressor in the gaseous state, and thereby releases thermal energy.
  • the liquid working fluid then passes through an expansion device which reduces its internal pressure, in particular an expansion valve, the working fluid partially liquefying, to the heat sink, in which it evaporates while absorbing thermal energy.
  • the evaporated working fluid then returns to the compressor and is compressed, which completes its cycle.
  • heat is pumped from the heat sink to the heat source.
  • This special design of a heat pump is known as a compressor heat pump; there are other heat pumps, particularly those based on the application of the Peltier effect or in which a cyclically compressed and decompressed gas circulates, such as Stirling and Vuilleumier heat pumps.
  • a condensate container is generally understood to be a vessel into which the condensate initially collected in the condensate trough is conveyed for collection, in particular for intermediate storage before being used again for cleaning, in particular rinsing, of heat exchangers.
  • the condensate tank is generally located above the condensate pan.
  • an aqueous liquid in particular condensate
  • a condensate pump is located in a condensate channel between the condensate pan and the condensate pan.
  • this condensate pump can be one with a constant delivery rate during operation or a condensate pump with variable delivery rate.
  • the amount M of aqueous liquid which is conveyed, ie pumped, from the condensate pan into the condensate container during the drying program is determined in step (c1).
  • this amount can be determined by counting, for example, the number of pumping operations at a known delivery rate of the condensation pump.
  • number required pumping operations required flush water M set / Per Pumpzyk-lus funded amount of water amount of condensate
  • a pump with a variable delivery rate can also be used.
  • a BLDC motor can be used to operate the pump for a variable delivery rate.
  • an existing BLDC motor can also be used as part of a flushing device.
  • the BLDC motor can be used between the flushing device and the heat exchanger as well as between the condensate pan and the condensate tank by using suitable reusable valves. The speed of the BLDC motor used and thus the mode of operation of the flushing device can then advantageously be varied during the method according to the invention.
  • a water quantity meter or flow meter with which the quantity of aqueous liquid conveyed into the condensate container can be determined directly.
  • the counter reading is preferably reset to zero after each drying program that has been carried out.
  • the heat exchanger to be cleaned can be cleaned with an aqueous liquid, in particular coming from the condensate pan.
  • an aqueous liquid originating from the condensate pan which can also be a mixture of condensate with tap water and / or Additives can also contain the term "rinsing liquid".
  • condensate per se or a mixture of condensate with an aqueous liquid, in particular tap water, supplied to the dryer from outside the dryer, for example from an external water supply can thus be used as the rinsing liquid.
  • the amount of aqueous liquid required for rinsing can be provided internally.
  • additives such as other solvents (for example alcohols) or surface-active reagents can be added to the rinsing liquid.
  • the condensate pan and the condensate container are generally connected to one another by a so-called condensate channel.
  • a sensor for the cleanliness of the condensate is present in the condensate channel. It is preferably provided here that if the proportion of impurities, for example fluff, is too high, an amount of tap water corresponding to this proportion is mixed with the condensate for dilution before it is used as a rinsing liquid in the sense of the invention. According to the invention, it can also be provided that the condensate is disposed of when the upper limit A lim for the proportion of impurities is reached.
  • water can be supplied from an external water supply or the rinsing liquid can be disposed of.
  • the quality of the aqueous liquid to be used is preferably checked with the aid of a suitable sensor, e.g. an optical sensor such as a turbidity sensor.
  • a request for filling or dilution of the rinsing liquid with tap water can optionally be transmitted to a user via an optionally available display device.
  • the rinsing liquid is passed into the heat exchanger, then collected in a condensate pan and then pumped back into the condensate container. It can be specified in the method that such a cycle is carried out more than once, so that, for example, a cycle of the rinsing liquid results for a predetermined period of time.
  • the user in the embodiment of the dryer with a removable condensate container can manually dispose of the rinsing liquid by removing and emptying the condensate container.
  • the rinsing liquid can be automatically disposed of by the dryer, for example via a drain hose. It is possible for the rinsing liquid to be pumped out of the condensate tray directly to the outside of the dryer and disposed of.
  • the flushing device can in particular be arranged between the drum and the heat exchanger, or else between the heat exchangers of the heat sink and the heat source.
  • the flushing device can be assigned to a specific heat exchanger.
  • the flushing device is preferably arranged between the drum and the heat sink, in particular also in a preferred method for flushing at least one heat exchanger of a heat pump.
  • the heat sink is rinsed in step (c3), an amount M set E of aqueous liquid intended for rinsing the heat sink being stored in the control device for the amount M set .
  • the heat source is rinsed in step (c3), an amount M set C of aqueous liquid provided for rinsing the heat source being stored in the control device for the amount M set .
  • the heat sink is rinsed at the same time, where M set C > M set E , and where M set E is an amount of aqueous liquid M set E intended for rinsing the heat sink.
  • the counter reading n i preferably contains a number n 1 of drying processes carried out after a last rinsing of the heat sink.
  • the counter reading n i contains a number n 2 of drying processes carried out after a last rinsing of the heat source.
  • a method is very particularly preferred in which the counting device can record at least two counter readings n i with i 2 2, a first counter reading n 1 indicates the number of drying processes carried out after a last rinsing of the heat sink and a second counter reading n 2 is the number of drying processes carried out after a last rinsing of the heat source.
  • n set is preferably in the range from 30 to 70, more preferably in the range from 40 to 60. This value will generally depend on the amount of dried laundry items and whether the heat exchanger is a heat sink or a heat source. The heat sink is generally more likely to be cleaned.
  • step (c3) is carried out according to the invention with the fan switched on. This is particularly advantageous if the rinsing device is arranged between the drum and the heat sink and in particular the heat source which is further away from the rinsing device is to be rinsed.
  • the cleaning or rinsing of the heat exchanger (s) can, for example, take place in that only one outlet of the condensate container, e.g. a valve between the condensate tank and the heat exchanger is opened so that the washing liquid acts on the heat exchanger due to gravity and preferably conveyed by the blower.
  • the flushing device essentially consists of the outlet and the line between the condensate container and the heat exchanger, which can also be referred to here simply as a condensate line.
  • a flushing pump with variable output, for example, as described above, one can be used which is driven by a BLDC motor.
  • a BLDC motor as the drive motor for the pump enables the speed to be changed in a simple manner, and in particular also a high speed, so that a particularly strong liquid jet can be generated for flushing a heat exchanger.
  • the use of a BLDC motor enables a very flexible and efficient implementation of the method according to the invention. It has also been found that with a BLDC motor under otherwise identical operating conditions, in particular the same speed, a higher energy efficiency can be achieved compared to other electric motors.
  • step (c3) and (c4) are not carried out, but instead step (d) carried out.
  • the counting device contains a counter reading n 3 for the number n lw of the step sequences (c2) and (d) and n 3 is increased by "1" when step (d) is carried out, the counter reading n 3 Zero is reset when the heat exchanger is flushed.
  • a display device indicates that the condensate container has to be filled with aqueous liquid in order to be able to flush the heat exchanger.
  • markings can be provided in the condensate container, for example, which indicate to a user at which liquid level in the condensate container, for example, the quantity M set E required for flushing the heat sink is present, or the quantity M set C required for flushing the heat source.
  • the condensate tank can be installed fixed or removable in the condensation dryer. If the condensate container is removable, a user of the dryer can easily use the used, i.e. Dispose of rinsing liquid contaminated with a large amount of fluff etc. Otherwise, an excessively contaminated rinsing liquid should be able to be pumped out of the dryer by a suitable device. This can be done directly with the help of a pump or via the condensate tray.
  • the dryer according to the invention can be designed as an exhaust air dryer or as a circulating air dryer.
  • a circulating air dryer the process air is in a closed circuit guided.
  • the process air is fed as so-called supply air from a supply air inlet to the drum and, after leaving the drum and passing through the heat exchanger, is conducted as exhaust air to an exhaust air outlet.
  • an electric heater can also be present in the dryer according to the invention. If, in one embodiment, the dryer comprises an additional electrical heater, the process air can be heated more quickly and thus a drying process can be carried out more quickly in the dryer. This would, however, possibly impair possible energy savings due to the use of a heat pump.
  • the dryer of the invention preferably also has an optical and / or acoustic display device which enables the user of the dryer to display e.g. Operating parameters and / or an expected duration of the drying process. An optical display device is preferably used for this.
  • the display device can provide information about the operation of the dryer, for example about the course of a method according to the invention and / or the display of a need for cleaning, for example by outputting a text or by lighting different-colored light-emitting diodes.
  • a display device preferably indicates whether purging a heat exchanger is recommended or even necessary.
  • it can also be indicated whether a heat exchanger is being flushed, with different displays being able to be used for flushing different heat exchangers.
  • different light-emitting diodes and / or different colors can be used for the heat sink and the heat source.
  • the dryer generally has a nozzle as part of the washing device, since the washing liquid is generally passed through a suitable nozzle onto the heat exchanger of the dryer to be cleaned.
  • a nozzle can extend over the entire width of a heat exchanger and, for example, have a length of 200 mm with a 2 mm wide nozzle gap. It is also possible to use significantly smaller nozzles, for example with a circular outlet opening with a diameter of a few mm, in particular less than 2 mm.
  • the invention has the advantage that in the case of a dryer with a heat pump in which the heat sink or heat source cannot be removed for cleaning, it is efficient Cleaning can be done. Since the invention enables an automatic, regular cleaning of a heat exchanger that is adapted to the requirements, a dryer with improved efficiency and a significantly reduced susceptibility to faults is possible.
  • the heat exchanger can be easily and conveniently cleaned without mechanical intervention in the device. Neither brushes, filters nor brushes are required for cleaning.
  • the invention enables a convenient, because automatic, internal cleaning of the heat exchangers of a dryer equipped with a heat pump, in particular also the heat source, for a user. This prevents unnecessary rinsing attempts due to insufficient rinsing liquid and thus unnecessary energy consumption.
  • cleaning can be variably adapted to a cleaning requirement or contamination status of each corresponding heat exchanger, both with regard to the frequency and the intensity of the cleaning.
  • the figure shows a vertical section through an embodiment of a dryer which is designed as a circulating air dryer with a compressor heat pump, comprising a heat source in the form of a condenser and a heat sink in the form of an evaporator.
  • the long arrows in the figure show the direction of flow of the process air.
  • the short arrows with the arrow head not filled in indicate the flow direction of the heat pump's refrigerant.
  • the dryer 1 shown in the figure contains a drum 3, which can be rotated about a horizontal axis, as a drying chamber for receiving damp laundry items (not shown here), and a heat pump 4, 5, 13, 14, comprising an evaporator 4, a condenser 5, and a compressor 13 and a throttle valve 14. Inside the drum 3, laundry carriers 25 are fastened for moving laundry items during a drum rotation.
  • the process air is guided through the drum 3 in the process air duct 2 by means of a fan 6.
  • the heat pump in addition to heating the process air the heat pump also makes it possible to heat the process air by means of an electrical heating device 21, which can be switched on, for example, for particularly rapid heating of the process air.
  • the heated air is conducted from the rear, ie from the side of the drum 3 opposite a door 22 closing the filling opening, through the perforated bottom thereof into the drum 3.
  • the heated process air thus enters the drum 3, where moisture is removed from the damp laundry items not shown in the figure.
  • a refrigerant circulating in the heat pump circuit 4, 5, 13, 14 is evaporated and fed to the condenser 5 via a compressor 13, where the refrigerant returns to the liquid state while releasing heat to the cooled and dehumidified process air flowing in the process air duct 2.
  • the refrigerant which is in liquid form, is in turn directed to the evaporator 4 via a throttle valve 14, as a result of which the refrigerant circuit is closed.
  • the moisture absorbed by the process air from the laundry items condenses in the evaporator 4 and is collected in a condensate pan 7.
  • the condensate pan 7 is connected via a condensate channel 23 to the condensate container 8, in which the flushing liquid is kept ready for flushing the heat exchangers.
  • a condensate pump 9 for conveying an aqueous liquid 12 from the condensate tray 7 to the condensate container 8 is located in the condensate channel 23.
  • the dryer 1 is controlled via a control device 10, which can be regulated by the user via an operating unit 24.
  • the dryer 1 also has a counting device 11 for registering a number of drying programs that have been carried out.
  • the rinsing device 15 comprises in particular an outlet from the condensate container 8, a variable-capacity rinsing pump 19, which is driven here by a BLDC motor 20, and a channel, which can also be referred to here as a condensate channel 23, at the end of the evaporator 4 a nozzle, not shown here, is arranged.
  • Flushing pump 19 and the nozzle enable particularly efficient flushing not only of evaporator 4 but also of condenser 5.
  • a lack of condensate available for flushing can be compensated for, for example, by a user refilling water into the condensate container. Not shown here, however, an external water supply can also be connected. This enables a mixture of condensate with tap water in order to possibly achieve a desired low level of contamination in the rinsing liquid 12.
  • the rinsing liquid 12 used (condensate used for cleaning, if necessary diluted with tap water) can, if necessary due to the contamination, be disposed of by manual emptying of the condensate container or, if necessary, via a line (not shown) outside the device.
  • the rinsing device 15 is arranged between the drum 3 and the evaporator 4. Even if, in particular, a rinsing of the condenser 5 is intended, the rinsing is also carried out by the evaporator 4, which is thus also rinsed. In order to facilitate the transport of the rinsing liquid 12 to the condenser 5, the blower 6 is therefore in operation in the embodiment shown here during the rinsing.
  • the flushing device 15 is further away from the condenser 5 than from the evaporator 4. Therefore, the following applies to flushing the evaporator or condenser: M set C > M set E.
  • the blower 6 is also operated at the same time, particularly during the flushing of the condenser 5. If the blower 6 is a variable-power blower, the blower 6 is preferably operated with a higher power when flushing the condenser than when flushing the evaporator.
  • the temporarily stored condensate as rinsing liquid 12 is passed from the condensate tank 8 with the aid of the pump (“rinsing pump”) 9 for cleaning fluff etc. through the evaporator 4 and possibly the condenser 5 and finally reaches the condensate pan 7.
  • the rinsing liquid 12 can be pumped back into the condensate container 8 by means of the pump 9 via the condensate channel 23. This cycle can be repeated several times until a desired cleaning is achieved.
  • the drum 3 is mounted on the rear floor by means of a rotary bearing and in the front by means of a bearing plate 26, the drum 3 resting with a brim on a sliding strip 27 on the bearing plate 26 and thus being held at the front end.
  • the fan 6 and the drum 3 are driven by a common drive motor 18.

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

Claims (13)

  1. Procédé de fonctionnement d'un séchoir (1) avec une pompe à chaleur et un nettoyage interne d'au moins un échangeur de chaleur, le séchoir (1) contenant un tambour (3) pour le logement de pièces de linges humides, une pompe à chaleur (4, 5, 13, 14) comportant comme échangeur de chaleur (4, 5) un puits de chaleur (4) et une source de chaleur (5), un collecteur de condensat (7), un réservoir à condensat (8), une pompe à condensat (9) pour l'acheminement d'un liquide aqueux (12) du collecteur de condensat (7) vers le réservoir à condensat (8), un dispositif de nettoyage (15) raccordé au réservoir à condensat (8) pour au moins un des échangeurs de chaleur (4, 5), un ventilateur (6) pour l'acheminement d'un air de traitement dans un conduit d'air de traitement (2), un dispositif de commande (10), ainsi qu'un appareil de comptage (11) destiné à l'enregistrement du nombre de programmes de séchage effectués, l'appareil de comptage (11) pouvant détecter au moins un index du compteur ni où i ≥ 1, comprenant les étapes suivantes:
    (a) démarrage d'un programme de séchage;
    (b) augmentation de l'index du compteur ni de la valeur "1" et vérification si le nouvel index du compteur obtenu de cette manière mi = (ni + 1) = nset i, nset i étant un nombre prédéfini de programmes de séchage effectués depuis un dernier nettoyage de l'échangeur de chaleur (4, 5);
    (c) pour le cas où mi = nset i,
    (c1) détection de la quantité M de liquide aqueux (12), acheminé pendant le programme de séchage du collecteur de condensat (7) dans le réservoir à condensat (8);
    (c2) comparaison de la quantité M détectée avec une quantité Mset prévue pour le nettoyage de l'échangeur de chaleur (4, 5);
    (c3) nettoyage de l'échangeur de chaleur (4, 5) avec l'appareil de nettoyage (15), quand M ≥ Mset; et
    (c4) remise de l'index du compteur ni à zéro; et
    (d) pour le cas où mi < nset i, exécution et fin du processus de séchage sans nettoyage de l'échangeur de chaleur (4, 5),
    le nettoyage s'effectuant à l'étape (c3) ventilateur (6) en marche; et
    pour le cas où, en cas de comparaison à l'étape (c2), il est établi que M < Mset, les étapes (c3) et (c4) ne sont pas effectuées, et au lieu de cela c'est l'étape (d) qui est effectuée.
  2. Procédé selon la revendication 1, caractérisé en ce que l'appareil de nettoyage (15) est disposé entre le tambour (3) et le puits de chaleur (4).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'à l'étape (c3), le puits de chaleur (4) est nettoyé, dans le dispositif de commande (10) pour la quantité Mset une quantité Mset E de liquide aqueux (12) étant présente dans le dispositif de commande (10) pour le nettoyage du puits de chaleur (4).
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'à l'étape (c3), la source de chaleur (5) est nettoyée, dans le dispositif de commande (10) pour la quantité Mset, une quantité Mset C de liquide aqueux (12) étant présente dans le dispositif de commande (10) pour le nettoyage de la source de chaleur (5).
  5. Procédé selon la revendication 4, caractérisé en ce qu'à l'étape (c3) le puits de chaleur (4) est nettoyé en même temps, Mset C > Mset E, et Mset E étant une quantité Mset E de liquide aqueux (12) prévue pour le nettoyage du puits de chaleur (4).
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'à l'étape (c3), le puits de chaleur (4) est nettoyé et l'index du compteur ni contient un nombre n1 de processus de séchage effectués après un dernier nettoyage du puits de chaleur (4).
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce qu'à l'étape (c3) la source de chaleur (5) est nettoyée et l'index du compteur ni contient un nombre n2 de processus de séchage effectués après un dernier nettoyage de la source de chaleur (5).
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce qu'à l'étape (c3) le puits de chaleur (4) et la source de chaleur (5) sont nettoyés et l'appareil de comptage (11) peut détecter au moins deux index du compteur ni, i ≥ 2, un premier index du compteur n1 donnant le nombre de processus de séchage effectués après un dernier nettoyage du puits de chaleur (4) et un deuxième index du compteur n2 étant le nombre de processus de séchage effectués après un dernier nettoyage de la source de chaleur (5).
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que la valeur nset i est située dans l'intervalle compris entre 30 et 70.
  10. Procédé selon l'une des revendications 1 à 9, caractérisé en ce que l'appareil de comptage (11) contient un index du compteur n3 pour le nombre nlw des suites d'étapes (c2) et (d), et n3 est augmenté, lors de l'exécution de l'étape (d), de "1", l'index du compteur n3 étant remis à zéro quand a lieu le nettoyage de l'échangeur de chaleur (4, 5).
  11. Procédé selon la revendication 10, caractérisé en ce que pour le cas où nlw a atteint une limite supérieure nlw lim, à l'étape (d) le condensat tombant dans le collecteur de condensat (7) n'est pas intégralement acheminé dans le réservoir à condensat (8), de sorte qu'au début d'un processus de séchage suivant, le collecteur de condensat (7) comporte encore du liquide aqueux.
  12. Procédé selon la revendication 11,
    caractérisé en ce que pour le cas où ni ≥ nset i + nlw lim il est indiqué dans un appareil d'affichage (17) que le réservoir à condensat (8) doit être rempli d'un liquide aqueux (12) pour pouvoir effectuer un nettoyage de l'échangeur de chaleur (4,5).
  13. Séchoir (1) contenant un tambour (3) pour le logement de pièces de linge humides,
    une pompe à chaleur (4, 5, 13, 14) présentant comme échangeur de chaleur (4,5) un puits de chaleur (4) et une source de chaleur (5), un collecteur de condensat (7), un réservoir à condensat (8), une pompe à condensat (9) pour l'acheminement d'un liquide aqueux (12) du collecteur de condensat (7) au réservoir à condensat (8), un appareil de nettoyage (15) raccordé au réservoir à condensat (8) pour au moins un des échangeurs de chaleur (4,5), un ventilateur (6) pour l'acheminement d'un air de traitement dans une conduite d'air de traitement (2), un dispositif de commande (10) ainsi qu'un appareil de comptage (11) destiné à l'enregistrement d'un nombre de programmes de séchage effectués, l'appareil de comptage (11) pouvant détecter au moins un index du compteur ni, i ≥ 1, caractérisé en ce que le dispositif de commande (10) est prévu pour l'exécution d'un procédé comprenant les étapes suivantes:
    (a) démarrage d'un programme de séchage;
    (b) augmentation de l'index du compteur ni de la valeur "1" et vérification si le nouvel index du compteur obtenu de cette manière mi = (ni + 1) = nset i, nset i étant un nombre prédéfini de programmes de séchage effectués depuis un dernier nettoyage de l'échangeur de chaleur (4, 5);
    (c) pour le cas où mi = nset i,
    (c1) détection de la quantité M de liquide aqueux (12), lequel est pompé pendant le programme de séchage du collecteur de condensat (7) dans le réservoir à condensat (8);
    (c2) comparaison de la quantité M détectée avec une quantité Mset prévue pour le nettoyage de l'échangeur de chaleur (4, 5);
    (c3) nettoyage de l'échangeur de chaleur (4, 5) avec l'appareil de nettoyage (15), quand M ≥ Mset; et
    (c4) remise de l'index du compteur ni à zéro; et
    (d) pour le cas où mi < nset i, exécution et fin du programme de séchage sans nettoyage de l'échangeur de chaleur (4, 5),
    le nettoyage s'effectuant à l'étape (c3) ventilateur (6) en marche; et
    pour le cas où, en cas de comparaison à l'étape (c2), il est établi que M < Mset, les étapes (c3) et (c4) ne sont pas effectuées, et au lieu de cela c'est l'étape (d) qui est effectuée.
EP16781825.1A 2016-01-21 2016-10-17 Procédé de fonctionnement d'un séchoir avec une pompe à chaleur et rinçage d'un échangeur de chaleur et séchoir Active EP3405610B1 (fr)

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DE102016200845.5A DE102016200845A1 (de) 2016-01-21 2016-01-21 Verfahren zum Betrieb eines Trockners mit einer Wärmepumpe und Spülung eines Wärmetauschers und hierfür geeigneter Trockner
PCT/EP2016/074868 WO2017125172A1 (fr) 2016-01-21 2016-10-17 Procédé de fonctionnement d'un sèche-linge comprenant une pompe à chaleur et nettoyage d'un échangeur de chaleur et sèche-linge adapté à cet effet

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DE102018202385B4 (de) * 2018-02-16 2023-03-02 BSH Hausgeräte GmbH Gerät zum Trocknen von Wäsche und Verfahren zum Betreiben eines solchen Geräts
DE102018202379A1 (de) 2018-02-16 2019-08-22 BSH Hausgeräte GmbH Gerät zum Trocknen von Wäsche und Verfahren zum Betreiben eines solchen Geräts
WO2020015914A1 (fr) * 2018-07-19 2020-01-23 Arcelik Anonim Sirketi Pulvérisateur de vapeur
EP4324977A1 (fr) * 2022-08-17 2024-02-21 BSH Hausgeräte GmbH Procédé de fonctionnement d'un appareil de séchage avec une pompe à chaleur et un dispositif de nettoyage

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DE102008006347A1 (de) * 2008-01-28 2009-07-30 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner sowie Verfahren zu seinem Betrieb
DE102008006349A1 (de) * 2008-01-28 2009-07-30 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner mit Kondensatwanne und -behälter sowie Verfahren zu seinem Betrieb
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WO2017125172A1 (fr) 2017-07-27
PL3405610T3 (pl) 2020-07-27
CN108603328B (zh) 2020-08-28
EP3405610A1 (fr) 2018-11-28
CN108603328A (zh) 2018-09-28
DE102016200845A1 (de) 2017-07-27

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