EP2116647B1 - Wäschetrockner oder Wasch-/Trocknermaschine - Google Patents

Wäschetrockner oder Wasch-/Trocknermaschine Download PDF

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Publication number
EP2116647B1
EP2116647B1 EP09159319A EP09159319A EP2116647B1 EP 2116647 B1 EP2116647 B1 EP 2116647B1 EP 09159319 A EP09159319 A EP 09159319A EP 09159319 A EP09159319 A EP 09159319A EP 2116647 B1 EP2116647 B1 EP 2116647B1
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EP
European Patent Office
Prior art keywords
air
circuit
drum
duct
laundry
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EP09159319A
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English (en)
French (fr)
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EP2116647A1 (de
Inventor
Costantino Mariotti
Nicola Colucci
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Whirlpool EMEA SpA
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Indesit Co SpA
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Priority to PL09159319T priority Critical patent/PL2116647T3/pl
Publication of EP2116647A1 publication Critical patent/EP2116647A1/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
    • D06F58/38—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
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/08—Humidity
    • 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
    • D06F2103/28—Air properties
    • D06F2103/34—Humidity
    • 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
    • D06F2103/36—Flow or velocity
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/16—Air properties
    • D06F2105/24—Flow or velocity
    • 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
    • D06F2105/28—Electric heating
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • 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 

Definitions

  • the present invention relates to a ventilation laundry dryer or washing/drying machine according to the preamble of claim 1.
  • ventilation machines stand out from “condensation” machines because they operate according to a different principle: in the former, the damp air is evacuated into the outer environment without condensing inside the machine (unlike the latter); it follows that ventilation machines are simpler because they lack the condenser and all those parts connected thereto (condensed water collection basins and ducts, control systems and components).
  • Such machines are usually equipped with a drum in which the laundry is placed to dry under the action of an air flow generated by a fan and heated by an electric resistor.
  • the partialization step of mixing the humid air with environmental air takes place with the heater on, so that the air is always kept at a certain temperature for improving the removal of moisture from the laundry.
  • the partialization step goes on until the end of the drying cycle (when the laundry is dry) with the heater constantly on to prevent the air temperature from dropping: if on the one hand this provides a faster drying cycle, on the other hand the continuous operation of the electric heater in the presence of an air volume renewed with low-temperature air causes a high energy consumption.
  • patent GB 2 094 963 discloses a drying cycle that comprises an initial partialization step and a successive open circuit step: the machine starts drying the laundry by partializing the air volume circulating in the machine, so as to reduce the humidity thereof; subsequently it switches to open circuit operation, wherein the entire air volume circulating in the machine is taken from the outside and is exhausted into the outer environment after having flowed through the drum only once; this step takes place with the heater off in order to let the laundry cool down before removal.
  • the switching between the two operating steps occurs according to a preset time interval or depending on the degree of humidity of the air, detected by a hygrometer.
  • the switching between the two operating modes is determined according to a preset time interval, the latter will take into account none of the variables involved in the machine (degree of humidity of the laundry, degree of humidity of the air, quantity of laundry items to be dried, etc.), and therefore the switching time cannot be based on the optimal conditions of the machine and of the load; on the other hand, the above-mentioned problems will arise when air humidity is detected in order to determine the switching time.
  • the present invention relates to a laundry dryer or washing/drying machine according to claim 1.
  • each complete laundry drying cycle comprises at least a first closed circuit step, during which the same air volume recirculates in the drum, and a second open circuit step, during which the air circulating in the drum is taken from and exhausted into the outer environment, and wherein during the first step the air is heated.
  • complete drying cycle refers to an operating cycle of the machine which starts when the wet laundry is subjected to the action of the machine and ends when the laundry is dry.
  • This method offers the advantage that the heater (typically an electric resistor) is only turned on when the machine is operating in closed circuit mode, so that energy consumption is considerably reduced; as can be easily understood, in fact, the thermal energy supplied to the air volume (which is always the same) circulating within a closed circuit in the machine is lower than that which should be supplied if heating were required (as in the prior art) during a partialization or open circuit step.
  • the heater typically an electric resistor
  • FIG. 1 a ventilation laundry dryer or washing/drying machine 1 is shown in a simplified form which is useful for understanding how it operates.
  • Machine 1 has a rotary drum 2 in which laundry 3 is placed by the user and dried by an air flow generated by fan 4 and heated by electric resistor 5.
  • the hot air flow laps laundry 3 (thereby subtracting the water contained therein in the form of moisture) and then flows into duct 6, which is for this purpose in fluidic communication with drum 2.
  • duct 6 Downstream of duct 6, as will be described more in detail below, there is a flow diverter 7 that connects four ducts: return duct 6 for drawing air from the drum, exhaust duct 8 for exhausting air into the outer environment, intake duct 9 for taking air from the outer environment, and feed duct 11 which is routed towards fan 4 and houses resistor 5.
  • return duct 6 for drawing air from the drum
  • exhaust duct 8 for exhausting air into the outer environment
  • intake duct 9 for taking air from the outer environment
  • feed duct 11 which is routed towards fan 4 and houses resistor 5.
  • the flow diverter is housed in a chamber 70 to which the four ducts are afferent; more specifically, the ducts connected to chamber 70 are return duct 6 for drawing air from the drum and feed duct 11 on one side of flow diverter 7, and exhaust duct 8 for exhausting air into the outer environment and intake duct 9 for taking air from the outer environment on the opposite side of the diverter.
  • the flow diverter can rotate about its own axis, so as to put in fluidic communication return duct 6 with feed duct 11, and intake duct 9 with exhaust duct 8 (as shown in Fig. 4 ), or return duct 6 with exhaust duct 8 and intake duct 9 with feed duct 11 (as shown in Fig. 5 ).
  • chamber 70 and the ducts are shaped in a manner such as to minimize load losses while still maintaining a considerable construction simplicity.
  • flow diverter 7 can also take intermediate positions between the two positions described above, for the purpose of partializing the flows exhausted into the outer environment, those taken in from the outer environment, and those recirculated between duct 6 and duct 11.
  • diverter 7 is in the condition of Fig. 4 , thus leading to the same air volume circulating within the machine by following the path indicated by the arrows in Fig. 2 : the air heated by resistor 5 is pushed into drum 2 by fan 4 and laps the laundry, thus removing moisture therefrom, to enter then return duct 6; from the latter it flows into chamber 70, where it is conveyed by diverter 7 into feed duct 11 and returns to resistor 5, thus been recirculated.
  • resistor 5 is on and quickly heats the circulating air volume, which in turn will increase the temperature of laundry 3 and subtract moisture therefrom.
  • the diverter is rotated about its own axis, as shown in Fig. 5 , so that the air circulates by following the path indicated by the arrows in Fig. 3 : the air is taken in from the outside through intake duct 9, which communicates with feed duct 11, and is pushed into drum 2 by fan 4; it then laps the laundry, thus removing moisture therefrom, and enters return duct 6 that communicates with exhaust duct 8, through which it is exhausted into the outer environment.
  • the path followed by the hot air flow is an open circuit, wherein the air is taken in from the outer environment, fed into drum 2, and then exhausted into the outer environment again; it is important to point out that during this second operating step electric resistor 5 is off, as will be discussed in greater detail hereafter.
  • machine 1 may comprise a temperature sensor 13 and a humidity sensor 14, the use of which will be described later on.
  • flow diverter 7 is controlled in a manner such as to start the second operating step.
  • thermometer 13 is not of course affected by the degree of humidity of the air, and therefore ensures a very accurate reading.
  • a threshold temperature which may considered to be optimal (in terms of energy consumption and quantity of water subtracted from the laundry) is in the range of 60°C to 80°C, preferably 70°C.
  • the laundry When the second open circuit step starts, the laundry will have already lost a certain quantity of water and will have reached a certain temperature higher than room temperature (and substantially equal to the threshold temperature); during this operating step, the electric resistor can be turned off, with the air lapping the laundry being at room temperature; it can however subtract moisture from the laundry until the latter is completely dry (i.e. has a natural degree of humidity), thus ending the drying cycle without the electric resistor having to be turned on again, but simply by exploiting the temperature reached by the laundry during the first step and the circulation of air at room temperature, thereby providing considerable energy savings.
  • drying time is to be privileged, it will be possible to leave the resistor on even during the open circuit step, although this will imply a certain waste of energy, de facto reducing the energy consumption advantages.
  • the air mass heated by the resistor keeps circulating within the closed circuit of the machine until it reaches a desired temperature; when the laundry has warmed up sufficiently (i.e. when the threshold temperature has been reached), the resistor is turned off and the cycle goes on by using unheated environmental air, thus lowering the energy consumption; the temperature reached by the laundry, in fact, is sufficient to obtain that the environmental air circulating around it removes any residual moisture, thus ending the drying cycle.
  • the recirculating air flow is mixed with a fresh air flow from the outside, so that a portion of the hot and damp air flow coming from duct 6 is exhausted into the outer environment;
  • this operating step which may be called “partialization step” corresponds to a condition of the flow diverter like the one shown in Fig. 6 , wherein it is rotated in a manner such that the flow running in duct 6 is divided into two parts, one of which is exhausted through exhaust duct 8, and the other one, i.e. the "recirculating" part, is delivered again into feed duct 11; of course, this implies that an air flow equal to the exhausted flow enters through intake duct 9 and is mixed with the recirculating flow.
  • This operating step with partialization allows (especially when the air flow exchanged with the outer environment is kept small with respect to the air volume circulating in the machine) to prevent an excessive cooling of the laundry and of the air circulating in the machine, while at the same time reducing the degree of humidity thereof, thus providing additional extraction of water from the laundry.
  • the electric resistor can be turned off (advantageously in terms of energy consumption), thus avoiding any waste of energy.
  • a further method variant which is particularly advantageous in terms of energy consumption comprises four steps: a first step with the circuit closed and the resistor on, a second step with the circuit open and the resistor off, a third step again with the circuit closed and the resistor on, and a fourth cooling step with the circuit open and the resistor off.
  • the instant of transition between the first step and the second step is established as a function of a threshold temperature, just as previously described and for the very same reasons that lead to avoid using humidity readings as a reference.
  • the instant of transition between the second step and the third step is established as a function of a certain degree of humidity of the air, which in the example described herein is a threshold value between 90% and 95% of humidity of the air in the duct: in this case, a more accurate measurement of the laundry drying state is provided by the hygrometer, which in this operation mode of the machine has very good sensitivity characteristics.
  • the transition between the third step and the fourth step is established again as a function of a temperature threshold, just like the first transition, but for different reasons: in this case, in fact, the laundry has a lower degree of humidity and therefore tends to dry and overheat very quickly during the drying process, thus being at risk of damage; for this reason, it is preferable to use a temperature threshold value between 60°C and 80°C (preferably 70°C) at which the resistor is turned off and the circuit is opened, so that the last small water percentage can be exhausted into the outer environment and the laundry can cool down before being removed by the user.
  • FIG. 11 An alternative to this solution, which is particularly effective when the laundry is much imbibed with water (e.g. because of the thickness or type of fabric thereof) is shown schematically in Fig. 11 : the closed circuit and open circuit steps are repeated several times until the laundry is dry (the three dots in the figure mean that there may be any number of repetitions).
  • the number of repetitions may advantageously be chosen depending on the duration of the closed circuit step at each repetition: its duration in fact becomes shorter as the quantity of water in the laundry decreases, because the less water there is in the laundry, the faster the air will reach the threshold temperature; it is therefore possible to set a minimum threshold duration of the closed circuit step (e.g. about 30 seconds) at the end of which it is assumed that the laundry is dry.
  • a minimum threshold duration of the closed circuit step e.g. about 30 seconds
  • the duration of the closed circuit step is used as a parameter based on which the laundry drying degree is measured.
  • the machine described above may of course be subject to many changes as well; in particular, although intake duct 9 and exhaust duct 8 are shown in the drawings as being adjacent, they may open into the outer environment at a distance from each other, as shown by way of example in Fig. 7 , so that fresher air can be taken in.
  • intake duct 9 and exhaust duct 8 instead of being afferent to flow diverter 7 and chamber 70, are both directly afferent to the fan and are each fitted with a shutter 7A, 7B: the first operating step is therefore obtained when shutters 7A and 7B close intake duct 9 and exhaust duct 8, respectively; the second operating step is obtained when shutter 7A opens exhaust duct 8 and closes feed duct 11, while shutter 7B opens intake duct 9.
  • a further variant which is extremely simple from a construction viewpoint and therefore advantageous, is represented by the flow diverter shown in Fig. 12 ; said flow diverter is also shown in Figs. 13 and 14 in the positions corresponding to the conditions of closed circuit and open circuit.
  • intake duct 90 and exhaust duct 80 simply open into rear wall 81 of the machine through a single aperture 100; in the closed circuit position, flow diverter 70 simply connects return duct 6 to feed duct 11, while at the same time closing aperture 100.
  • flow diverter 70 is rotated about its own median axis, thus forming one of the walls of intake duct 90 and exhaust duct 80; in particular, it forms the common wall between the two ducts, thus dividing single aperture 100 into two ducts 80 and 90.
  • the electric resistor may alternatively be replaced with a gas heater or the like.
  • the machine according to the present invention will be equipped with a control unit receiving signals from (temperature or humidity) sensor 13 and controlling the flow diverter or the shutters so as to select the most appropriate operating step; to this end, the flow diverter or the shutters will be actuated by a dedicated electric motor controlled by the control unit.
  • a control unit receiving signals from (temperature or humidity) sensor 13 and controlling the flow diverter or the shutters so as to select the most appropriate operating step; to this end, the flow diverter or the shutters will be actuated by a dedicated electric motor controlled by the control unit.
  • the machine will also comprise, in addition to the parts described above for the purpose of illustrating the invention, all those parts which are usually found in machines of this kind, such as an electric motor for rotating the drum, a user interface and, in the case of a washing/drying machine, also all those parts which are typically required for the laundry washing function.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (12)

  1. Verfahren zum Trocknen von Wäsche (3) in einem Ventilationswäschetrockner oder einer Wasch-/Trocknungsmaschine (1, 10), wobei die Wäsche zum Trocknen in eine Trommel (2) platziert wird, in welcher sie der Einwirkung eines Luftstromes ausgesetzt ist, der das darin enthaltene Wasser zum Verdampfen veranlasst, wobei die Feuchtluft in die äußere Umgebung abgeführt wird,
    dadurch gekennzeichnet,
    dass ein Trocknungszyklus zumindest einen ersten geschlossenen Kreislaufschritt aufweist, wobei ein Luftstrom, bestehend aus einer einzigen Luftmasse (1, 10), mehrere Durchläufe durch die Trommel (2) macht und zumindest einen zweiten offenen Kreislaufschritt aufweist, wobei der Luftstrom eine Luftmasse aufweist, die von der äußeren Umgebung entnommen wurde und in die äußere Umgebung abgelassen wird, nachdem sie einmal durch die Trommel (2) geströmt ist und wobei die Luft während des geschlossenen Kreislaufschritts aufgeheizt wird und zusätzlich einen Aufteilungsschritt aufweist, wobei ein Teil der in der Maschine (1, 10) zirkulierenden Luftmasse durch eine gleiche Menge unbeheizter Umgebungsluft ersetzt wird,
    dass der Trocknungszyklus die aufeinander folgende Wiederholung für eine bevorzugte Anzahl des ersten Schritts mit dem geschlossenen Kreislauf und der beheizten Luft und des zweiten Schritts mit dem geöffneten Kreislauf aufweist.
  2. Verfahren nach Anspruch 1,
    wobei die Luft während des offenen Kreislaufschritts nicht beheizt ist.
  3. Verfahren nach Anspruch 1 oder 2,
    wobei die Umschaltung zwischen dem geschlossenen Kreislaufschritt und dem offenen Kreislaufschritt als eine Funktion einer Lufttemperatur bestimmt ist, insbesondere liegt der Temperaturschwellenwert, der die Umschaltung zwischen geschlossenem Kreislauf und offenem Kreislauf bestimmt, in dem Bereich von 60°C bis 80°C, vorzugsweise 70°C.
  4. Verfahren nach Anspruch 1,
    mit vier aufeinander folgenden Schritten:
    - erster Schritt mit dem geschlossenen Kreislauf und der beheizten Luft;
    - zweiter Schritt mit dem offenen Kreislauf und der unbeheizten Luft;
    - dritter Schritt mit dem geschlossenen Kreislauf und der beheizten Luft;
    - vierter Schritt mit dem offenen Kreislauf und der unbeheizten Luft, insbesondere wird die Umschaltung zwischen dem ersten Schritt und dem zweiten Schritt als eine Funktion eines ersten Lufttemperaturschwellenwertes eingeleitet,
    wobei der erste Temperaturschwellenwert vorzugsweise im Wesentlichen 70°C beträgt,
    wobei die Umschaltung zwischen dem zweiten und dritten Schritt als eine Funktion eines Luftfeuchtigkeitsschwellenwertes eingeleitet wird,
    wobei der Luftfeuchtigkeitsschwellenwert der aus der Trommel ausströmenden Luft vorzugsweise zwischen 90% und 95% beträgt, und die Umschaltung zwischen dem dritten und vierten Schritt als eine Funktion eines zweiten Lufttemperaturschwellenwertes eingeleitet wird,
    wobei der zweite Temperaturschwellenwert vorzugsweise im Wesentlichen 70°C beträgt.
  5. Verfahren nach Anspruch 1,
    wobei die Anzahl von Wiederholungen der ersten und zweiten Schritte als eine Funktion der Dauer des geschlossenen Kreislaufschritts eingeleitet wird.
  6. Verfahren nach Anspruch 5,
    wobei die Umschaltung zwischen dem ersten und dem zweiten Schritt als eine Funktion eines ersten Lufttemperaturschwellenwertes eingeleitet wird und die Umschaltung zwischen dem zweiten Schritt und dem nächsten Schritt als eine Funktion eines Luftfeuchtigkeitsschwellenwertes eingeleitet wird, insbesondere liegt der Temperaturschwellenwert in dem Bereich von 60°C bis 80°C, vorzugsweise 70°C, und der Feuchtigkeitsschwellenwert der Luft, die aus der Trommel ausströmt, beträgt zwischen 90% und 95%.
  7. Wäschetrockner oder Wasch-/Trocknungsmaschine (1, 10) der Ventilationsbauart, wobei die Feuchtluft in die äußere Umgebung abgeführt wird, mit:
    einer Trommel (2), worin die Wäsche (3) zum Trocknen platziert wird,
    einem Heizkörper (5) zum Heizen eines durch einen Lüfter (4) erzeugten Luftstroms in dem geschlossenen Kreislauf,
    wobei ein Luftstrom durch die Trommel (2) strömt und die darin enthaltene Wäsche umgibt und daraus Feuchtigkeit entnimmt,
    wobei ein Luftstrom von und zu der Trommel (2) durch entsprechende Rück- (6) und Zuführkanäle (11, 11A, 11B) gefördert wird,
    ferner mit einem Auslasskanal (8, 80) zum Auslassen der Luft in die äußere Umgebung und einem Einlasskanal (9, 90) zum Einlassen von Umgebungsluft, gekennzeichnet durch
    einen Durchflussumlenker (7, 7A, 7B, 70), der angepasst ist, um abwechselnd den Rückkanal (6) mit der Zuführkanal (11) und den Einlasskanal (9, 90) mit dem Auslasskanal (8, 80) oder den Rückkanal (6) mit dem Auslasskanal (8, 80) und
    den Einlasskanal (9, 90) mit dem Zuführkanal (11) in fluidische Verbindung zu setzen, um so den Kreislauf, dem die Luft beim Durchströmen durch die Trommel (2) folgt, zu öffnen oder zu schließen,
    wobei der Durchflussumlenker (7, 70) in Zwischenpositionen gesetzt werden kann, um die Luftströme, die durch den Rückkanal (6) austreten und in den Auslasskanal (8, 80) gefördert werden, mit gleicher Menge an Umgebungsluftströmen, die durch den Einlasskanal (9, 90) eingeführt und in den Zuführkanal (11) gefördert werden, aufzuteilen.
  8. Maschine (1, 10) nach Anspruch 7,
    wobei der Durchflussumlenker (7) in einer Kammer (70) untergebracht ist, wobei der Luftrückkanal (6) und Luftzufuhrkanal (11) afferent zu der Kammer (70) auf einer Seite des Umlenkers (7) sind und wobei der Luftauslasskanal (8) und der Einlasskanal (9) afferent zu der Kammer (70) auf der gegenüberliegenden Seite des Umlenkers (7) sind und
    wobei der Durchflussumlenker (7) um die eigene Achse rotieren kann, um den Kreislauf, dem die Luft beim Durchströmen durch die Trommel (2) folgt, zu öffnen oder zu schließen.
  9. Maschine (1, 10) nach Anspruch 7,
    wobei die Einlass- und Auslasskanäle (90, 80) in eine einzelne Öffnung (100) auf der Rückwand der Maschine münden und
    wobei in dem geschlossenen Kreislaufzustand der Durchflussumlenker (70) angepasst ist, um den Rückkanal (6) mit dem Einlasskanal (11) zu verbinden, während gleichzeitig die Öffnung (100) geschlossen wird und in dem offenen Kreislaufzustand der Durchflussumlenker (70) um seine eigene Mittelachse rotiert und die Öffnung (100) in die beiden Auslass- und Einlasskanäle (80, 90) mittels Bildung einer gemeinsamen Wand dazwischen teilt.
  10. Maschine (1, 10) nach einem der Ansprüche 7 bis 9,
    wobei, wenn der Kreislauf, dem die Luft beim Durchströmen durch die Trommel (2) folgt, ein geschlossener Kreislauf ist, das Heizelement (5) eingeschaltet ist, während, wenn der Kreislauf, dem die Luft beim Durchströmen durch die Trommel (2) folgt, ein offener Kreislauf ist, das Heizelement (5) ausgeschaltet ist.
  11. Maschine (1, 10) nach einem oder mehreren der Ansprüche 7 bis 10,mit mit einem Temperatursensor (13) und einem Feuchtigkeitssensor (14) zum Erfassen der Temperatur oder der Feuchtigkeit des Luftstromes, der innerhalb der Trommel zirkuliert.
  12. Maschine (1, 10) nach einem oder mehreren der Ansprüche 7 bis 11, dadurch gekennzeichnet, dass darin das Verfahren nach einem oder mehreren der Ansprüche 1 bis 6 implementiert ist.
EP09159319A 2008-05-06 2009-05-04 Wäschetrockner oder Wasch-/Trocknermaschine Not-in-force EP2116647B1 (de)

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PL09159319T PL2116647T3 (pl) 2008-05-06 2009-05-04 Suszarka do prania lub suszarka do prania/suszenia

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IT000337A ITTO20080337A1 (it) 2008-05-06 2008-05-06 Macchina asciugatrice o lava-asciugatrice

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EP2116647B1 true EP2116647B1 (de) 2012-02-01

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CN204023223U (zh) * 2013-09-03 2014-12-17 Lg电子株式会社 衣物处理设备
EP2843126B1 (de) * 2013-09-03 2017-11-08 LG Electronics Inc. Wäschebehandlungsvorrichtung und steuerverfahren dafür
ITTO20131101A1 (it) 2013-12-31 2015-07-01 Indesit Co Spa Macchina lavasciugatrice con dispositivo di pulizia di un filtro dell'aria di asciugatura
ITTO20131099A1 (it) 2013-12-31 2015-07-01 Indesit Co Spa Macchina lavasciugatrice con sistema di prevenzione dell¿intasamento di un filtro dell¿aria
EP3132081B1 (de) 2014-04-17 2019-03-13 Whirlpool EMEA S.p.A Wasch- / trocknen-maschine mit mitteln zum reinigen eines luftfilters
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WO2016108102A1 (en) 2014-12-30 2016-07-07 Indesit Company S.P.A. Washing/drying machine with a spider-shaped device for cleaning an air filter
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JP6762618B2 (ja) * 2017-08-18 2020-09-30 株式会社東京洗染機械製作所 乾燥機
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CN118531591A (zh) * 2023-02-20 2024-08-23 青岛海尔洗涤电器有限公司 具有烘干功能的洗衣机

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CN104420148B (zh) * 2013-09-03 2017-04-12 Lg电子株式会社 衣物处理设备的控制方法

Also Published As

Publication number Publication date
PL2116647T3 (pl) 2012-07-31
ATE543941T1 (de) 2012-02-15
RU2009117163A (ru) 2010-11-10
EP2116647A1 (de) 2009-11-11
ITTO20080337A1 (it) 2009-11-07
RU2474633C2 (ru) 2013-02-10

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