EP3533920B1 - Wäschetrocknungsvorrichtung mit wärmepumpe - Google Patents

Wäschetrocknungsvorrichtung mit wärmepumpe Download PDF

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Publication number
EP3533920B1
EP3533920B1 EP19156133.1A EP19156133A EP3533920B1 EP 3533920 B1 EP3533920 B1 EP 3533920B1 EP 19156133 A EP19156133 A EP 19156133A EP 3533920 B1 EP3533920 B1 EP 3533920B1
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EP
European Patent Office
Prior art keywords
rotary compressor
compressor
switched
cut
control unit
Prior art date
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Application number
EP19156133.1A
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English (en)
French (fr)
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EP3533920A1 (de
Inventor
Jose Antonio Ruiz Bermejo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication of EP3533920A1 publication Critical patent/EP3533920A1/de
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Classifications

    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/30—Drying processes 
    • 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 
    • 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
    • D06F2103/50—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to heat pumps, e.g. pressure or flow rate
    • 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

Definitions

  • the invention relates to a clothes drying apparatus comprising a heat pump including a compressor, a condenser, an expansion means, and an evaporator connected by fluid conduits carrying working fluid, and comprising a control unit connected to the compressor, the control unit being adapted to operate the compressor.
  • the invention also relates to a method for operating a clothes drying apparatus comprising a heat pump including a compressor, a condenser, an expansion means, and an evaporator connected by fluid conduits carrying working fluid.
  • the invention is particularly useful for household appliances.
  • WO 2007/077084 A1 discloses a domestic appliance for the care of washed articles, in particular a tumble drier.
  • Said appliance comprises a container for receiving the washed articles, a process air supply that is connected to the container, allowing process air to flow through the container, and a first heat exchanger which is coupled to the process air supply and is designed to dehumidify the process air that exits the container.
  • EP 2 985 466 A1 discloses a rotary compressor which comprises a cylindrical housing, a cylindrical roller accommodated in the housing, a motor shaft leading through the roller having a cam for rolling the roller along a side wall of the housing, and a discharge port leading through a bottom cover.
  • a household appliance in particular laundry care apparatus, comprises the heat pump.
  • BLDC-driven compressors To vary an energy consumption of the heat pump, it is known to use BLDC-driven compressors and to vary a speed of the BLDC-driven compressor, i.e. a rotational speed of the BLDC motor driving the compressor.
  • BLDC-driven compressors have the disadvantage that they are expensive and use additional components like an inverter.
  • EP 3 425 109 A1 discloses a method of operating a laundry drying machine, such as a heat pump laundry dryer or a heat pump washing machine having drying function, in order to carry out a laundry treatment process on a laundry load comprising a drying cycle
  • the laundry drying machine comprises: a control unit controlling the operation of the laundry drying machine, a laundry treatment chamber for treating laundry using process air, a process air circuit for circulating the process air, a heat pump system having a refrigerant loop, in which the refrigerant fluid is circulated through a first and a second heat exchanger in thermal communication with the process air, a compressor for circulating the refrigerant fluid through the refrigerant loop, and wherein the method comprises the following steps: driving the compressor by means of the control unit according to a first driving sequence in a first portion driving the compressor by means of the control unit according to a second driving sequence in a second portion of the drying cycle different from the first portion; wherein the second driving sequence provides for
  • JP 2013 132417 A discloses a clothes dryer that includes: a process air channel for applying drying air blown from a blower fan from a heat sink to a radiator of a heat-pump device to guide the air to a rotary drum; resistance detection means for detecting a resistance value of clothing in the rotary drum; dryness degree detection means for detecting a degree of dryness of the clothing by using the resistance detection means; temperature detection means for detecting the temperature of a coolant flowing in a pipeline of the radiator; and control means for controlling the heat pump device and others.
  • the control means performs ON/OFF control of a compressor on the basis of the information from the temperature detection means and dryness degree detection means, sets a delay period from an event of the dryness degree detection means detecting a predetermined degree of dryness to ending of the drying operation, and ends the drying operation when the On time of the compressor reaches the set delay period.
  • DE 11 2013 004377 T5 discloses a clothes dryer which is provided with: a heat pump device; a drum drive motor for rotationally driving a rotating drum; and a blower for supplying warm air heated by the heat pump device into the rotating drum.
  • the clothes dryer is also provided with: a circulation air flow path for conducting drying air, which is delivered by the blower, to the rotating drum after causing the drying air to flow from a heat absorber to a heat radiator; and a state detection unit for detecting the state of the heat pump device.
  • the clothes dryer is further provided with: a control unit for controlling drying operation; and a drive output reduction unit for reducing drive output to the drum drive motor.
  • the control unit has a drive output reduction unit for reducing the drive output of the rotating drum and performs the on-off control of a compressor on the basis of the output of the state detection unit. When the compressor is in an OFF state, the control unit causes the drive output reduction unit to reduce drive output to the drum drive motor.
  • a clothes drying apparatus comprising a heat pump including a compressor, a condenser, an expansion means, and an evaporator connected by fluid conduits carrying working fluid, and comprising a control unit connected to the compressor, the control unit being adapted to operate the compressor in a first mode of operation and in a second mode of operation during a drying cycle, wherein the compressor is an AC rotary compressor, in the first mode of operation, the AC rotary compressor is constantly switched on, and in the second mode of operation, the AC rotary compressor is alternately switched on and off.
  • This clothes drying apparatus gives the advantage that in the first mode of operation a particularly fast drying can be achieved ("speed mode”) while in the second mode of operation a particularly energy-saving drying can be achieved (“eco mode”).
  • the modes of operation may be selected by a user and/or may be automatically selected by the clothes drying apparatus.
  • the energy-saving effect of the second mode of operation is achieved by not operation the AC rotary compressor in its switched-off state. Then, thermal inertia of the condenser and the evaporator still allows clothes to be dried in the switched-off state. If the drying effectiveness in the switched-off state falls under a pre-determined level, the compressor is switched on again. Therefore, the alternative switching on and off of the AC rotary compressor achieves a reduction of the total energy consumption during a drying cycle.
  • the clothes drying apparatus gives the further advantage that it can be more cost-effective than using a BLDC-driven compressor. While BLDC-driven compressors have a higher efficiency, they are also more expensive and need additional components like an inverter electronic to be operated. A clothes drying apparatus using the AC rotary compressor is also more robust.
  • the heat pump comprises open fluid conduits for carrying the working fluid, wherein, in its switched off state, the AC rotary compressor blocks the working fluid from flowing between its high-pressure side and its low-pressure side, and/or wherein the expansion means is selectively switchable between an open state and a closed state, and the control unit is adapted to open the expansion means when the AC rotary compressor is switched on and to close the expansion means when the AC rotary compressor is switched off.
  • An "open fluid conduit” may be understood to mean a fluid conduit that has no dedicated cut-off means to stop a flow of working fluid from flowing through the it. That the control unit is adapted to open the expansion means may include opening the expansion means or keeping the expansion means open. In analogy, that the control unit is adapted to close the expansion means may include closing the expansion means or keeping the expansion means closed. It is advantageous that the expansion means is an expansion valve.
  • the fluid conduits comprise at least one controllable cut-off means, wherein the at least one controllable cut-off means is open when the AC rotary compressor is switched on during a drying cycle, and wherein the at least one controllable cut-off means is closed when the AC rotary compressor is switched off during a drying cycle and is open when the AC rotary compressor is switched on during a drying cycle.
  • the controllable cut-off means can be selectively opened and closed by the control unit.
  • the controllable cut-off means can be a valve.
  • the controllable cut-off means may be connected to the control unit to be selectively switched on and off by the control unit. That a fluid conduit comprises a cut-off means may include that the cut-off means is positioned in or between two parts of the fluid conduit and/or may include that the cut-off means is positioned between the fluid conduit and a functional component of the heat pump (e.g. compressor, evaporator, condenser and/or expansion means.
  • a functional component of the heat pump e.g. compressor, evaporator, condenser and/or expansion means.
  • the clothes drying apparatus may be a clothes dryer or a washing machine / clothes dryer combination.
  • the clothes drying apparatus may be a domestic or household appliance.
  • the AC rotary compressor or AC-driven rotary compressor may have a fixed nominal speed in its switched-on state.
  • the AC rotary compressor is a compressor driven by an AC motor.
  • the heat pump may comprise the compressor, the condenser, the expansion means (e.g. a capillary or an expansion valve), and the evaporator, connected in this order by the fluid conduits carrying the working fluid (refrigerant).
  • the heat pump provides a working fluid circuit for letting the working fluid flow through the compressor, the condenser, the expansion means, and the evaporator, in this direction.
  • the fluid conduits may be or comprise pipes etc.
  • the pipes may be made of copper, aluminium etc.
  • the working fluid may comprise: flammable refrigerants like R290, R32 and/or R1270 (propylene), etc., and/or fluorinated hydrocarbon compounds (HFC) like R407C and/or R134a etc.
  • the condenser and the evaporator act as heat exchangers positioned in a process air channel (e.g. an open-loop or closed-loop process air channel).
  • a process air channel e.g. an open-loop or closed-loop process air channel.
  • the condenser may act as a heater for process air flowing through the process air channel while the evaporator may act as a cooling device to cool down the process air.
  • the arrangement and working principle of heat pumps for a clothes drying apparatus is generally known and will thus not described in greater detail.
  • a "drying cycle” may be part of a drying process, in particular a drying program.
  • the drying process may comprise further cycles like a spinning or spin-dry cycle, an anti-wrinkle cycle etc.
  • clothes contained in a clothes compartment of the clothes drying apparatus may be dried by introducing warm and dry process air into the clothes compartment and releasing moist process air from the clothes compartment.
  • the clothes compartment may be a rotatable drum.
  • a drying process may have one or more drying cycles. If a drying process comprises multiple drying cycles, they may be separated by at least one further cycle, e.g. a spin-dry cycle.
  • the control unit is adapted to selectively switch the AC rotary compressor on and off.
  • the control unit may be a central control unit of the clothes drying apparatus controlling operation of the drying cycle.
  • control unit is adapted to repeatedly switch on and off the AC rotary compressor. This gives the advantage that a drying efficiency can be held on a high level during the second mode of operation.
  • a duration of the time slots may be pre-defined.
  • a duration of the time slots may be set based on input from sensors of the clothes drying apparatus, e.g. from one or more temperature sensors, a moisture sensor etc.
  • control unit is adapted to vary a duration of time slots for switching the AC rotary compressor on and off.
  • This advantageously allows adapting the level of drying efficiency, e.g. based on an amount (e.g. a weight) of the clothes, a water content (e.g. a degree of dryness) of the clothes, a type of the clothes, a selected duration of a drying cycle or drying program etc.
  • the time slots for switching on and switching off of the AC rotary compressor may be different, i.e. have a different length or duration.
  • control unit is adapted to vary a duration of the time slots during a drying cycle. This advantageously allows a further optimization of the level of drying efficiency.
  • the duration of the time slots is at least three minutes. Varying the duration of the on-slots and/or off-slots may affect a temperature stability and/or the drying time in relation to the energy consumption.
  • the at least one controllable cut-off means comprises exactly one cut-off means positioned between the expansion means and the evaporator or between the condensor and the expansion means. This advantageously provides a particularly effective way to prevent the working fluid flowing in the heat pump while keeping costs low, in particular if the expansion means is not closable.
  • the at least one controllable cut-off means comprises exactly one cut-off means positioned between the AC rotary compressor and the condenser or between the evaporator and the AC rotary compressor. This advantageously provides another particularly effective way to prevent the working fluid flowing in the heat pump while keeping costs low, in particular if a high-pressure side and a low-pressure side of the AC rotary compressor is not closed in its switched-off state.
  • the at least one controllable cut-off means comprises two cut-off means, a first cut-off means of which being positioned between the expansion means and the evaporator or between the condensor and the expansion means and a second cut-off means being positioned between the evaporator and the AC rotary compressor or between the AC rotary compressor and the condenser.
  • the at least one controllable cut-off means comprises a first cut-off means being positioned between the expansion means and the evaporator or between the condenser and the expansion means, a second cut-off means being positioned between the evaporator and the compressor, and a third cut-off means positioned between the compressor and the condenser.
  • the controllable cut-off means may be valves.
  • the controllable cut-off means may be connected to the control unit to be selectively switched on and off by the control unit.
  • the object is also achieved by a method for operating a clothes drying apparatus comprising a heat pump including a compressor, a condenser, an expansion means, and an evaporator, connected by fluid conduits carrying working fluid, wherein, in a first mode of operation, the AC rotary compressor is constantly switched on during a drying cycle, and, in a second mode of operation, the AC rotary compressor is alternately switched on 35and off during a drying cycle
  • the heat pump comprises open fluid conduits for carrying the working fluid, wherein, in its switched off state, the AC rotary compressor blocks the working fluid from flowing between its high-pressure side and its low-pressure side, and/or the expansion means is selectively switchable between an open state and a closed state and the expansion means is opened when the AC rotary compressor is switched on and is closed when the AC rotary compressor is switched off, and/or the fluid conduits comprise at least one controllable cut-off means, wherein the at least one controllable cut-off means is opened when the AC rotary compressor is switched on during a drying cycle, and wherein the at least one controllable cut-off means is closed when the AC rotary compressor is switched off during a drying cycle and is opened when the AC rotary compressor is switched on during a drying cycle.
  • the method may be embodied in analogy to the drying apparatus comprising as described above and gives the same advantages.
  • Fig.1 shows a functional block diagram of a clothes drying apparatus 1 according to the invention.
  • the clothes drying apparatus 1 has a closed-loop process air circuit 2 comprising a rotational drum 3 for holding clothes.
  • An output port of the drum 3 is connected to a lint filter 4 via a section of a process air channel 5 (long dashed lines).
  • the lint filter 4 is connected to a first heat exchanger 6 via another section of the process air channel 5.
  • Process air P is guided over a surface of the first heat exchanger 6 where it is cooled down so that the moist process air P from the drum 3 condensates.
  • the resulting condensate 7 may be collected in a tray 8.
  • the collected condensate may be lead to waste or may be re-used, e.g. for cleaning at least the first heat exchanger 6.
  • the heat exchanger 6 is further connected to a second heat exchanger 9 via yet another section of the process air channel 5.
  • the second heat exchanger 9 is connected to a fan 10 for moving the process air P within the process air circuit 2 via yet another section of the process air channel 5.
  • the fan 10 is connected to an inlet port of the drum 3 via yet another section of the process air channel 5.
  • dry and warm process air P is introduced into the drum 3 to dry the clothes.
  • the fan 10 may also be placed at another position within the process air circuit 2, e.g. between the drum 3 and the lint filter 4.
  • the process air circuit 2 may have additional components (not shown) like an additional electric heater, an additional fan, further lint filters etc.
  • the first heat exchanger 6 and the second heat exchanger 9 are also components of a heat pump 11 of the clothes drying apparatus 1.
  • the first heat exchanger 6 corresponds to an evaporator of the heat pump 11 while the second heat exchanger 9 corresponds to its condenser.
  • the heat pump 11 further comprises an AC rotary compressor 12 and an expansion means 13, e.g. a capillary or an expansion valve.
  • a high-pressure side or port of the AC rotary compressor 12 is connected to the condenser (second heat exchanger 9) via a first fluid conduit 14 for working fluid F.
  • the condenser 9 is further connected to a high-pressure side of the expansion means 13 via a second fluid conduit 15 for the working fluid F.
  • a low-pressure side of the expansion means 13 is connected to the evaporator (first heat exchanger 6) via a third fluid conduit 16 for the working fluid F.
  • the evaporator 6 is connected to a low-pressure side of the AC rotary compressor 12 via a fourth fluid conduit 17 for the working fluid F.
  • pressurized working fluid F flows from the high-pressure side of the AC rotary compressor 12, through the first conduit 14, through the condenser 9, through the second conduit 15, through the expansion means 13 (where it is expanded at its low-pressure side), through the third conduit 16, through the evaporator 6, and through the fourth conduit 17 to the low-pressure side of the AC rotary compressor 12.
  • the working fluid F is compressed and is then again emitted at the high-pressure side of the AC rotary compressor 12.
  • the clothes drying apparatus 1 also comprises a control unit 18 controlling operation of the AC rotary compressor 12, in particular for switching the AC rotary compressor 12 on and off.
  • the control unit 18 may also control operation of the drum 3 and the fan 10, as well as further components of the clothes drying apparatus 1.
  • the control unit 18 is adapted to operate the AC rotary compressor 12 in a first mode of operation and in a second mode of operation during a drying cycle, wherein in the first mode of operation, the AC rotary compressor 12 is constantly switched on, and in the second mode of operation, the AC rotary compressor 12 is alternately switched on and off, in particular repeatedly.
  • the control unit 18 may be adapted to vary a duration of time slots for switching the AC rotary compressor 12 on and off.
  • the control unit 18 may further be adapted to vary a duration of the time slots during a drying cycle.
  • the heat pump 11 comprises open conduits 14 to 17.
  • the AC rotary compressor 12 is embodied such that its high-pressure side and its low-pressure side are hermetically sealed from each other in the switched-off state.
  • the switched-off AC rotary compressor 12 blocks the working fluid F from flowing from its high-pressure side to its low-pressure side.
  • the expansion means 13 is selectively switchable by the control unit 18 between an open state and a closed state and the control unit 18 is adapted to open the expansion means 13 when the AC rotary compressor 12 is switched on and to close the expansion means 13 when the AC rotary compressor 12 is switched off.
  • the expansion means 13 blocks the working fluid F from flowing from its high-pressure side to its low-pressure side.
  • the clothes drying apparatus 1 comprises a controllable first cut-off means 19 connected to the control unit 18, the first cut-off means 19 being positioned between the expansion means 13 and the evaporator 6.
  • the control unit 18 controls the first cut-off means 19 such that it is open when the AC rotary compressor 12 is switched on and it is closed when the AC rotary compressor 12 is switched off during a drying cycle.
  • This variant may be particularly advantageous if the high-pressure side and the low-pressure side of the AC rotary compressor 12 are hermetically sealed from each other in the switched-off state but the expansion means 13 is not closable, i.e. always open.
  • the controllable first cut-off means 19 may be positioned between the condenser 9 and the expansion means 13.
  • the clothes drying apparatus 1 additionally comprises a controllable second cut-off means 20 or a controllable third cut-off means 21 connected to the control unit 18.
  • the second cut-off means 20 is positioned between the evaporator 6 and the low-pressure-side of the AC rotary compressor 12.
  • the third cut-off means 21 is positioned between the high-pressure-side of the AC rotary compressor 12 and the condenser 9.
  • the control unit 18 controls the second cut-off means 20 or the third cut-off means 21 such that it is open when the AC rotary compressor 12 is switched on and it is closed when the AC rotary compressor 12 is switched off during a drying cycle.
  • This variant may be particularly advantageous if the high-pressure side and the low-pressure side of the AC rotary compressor 12 are open against each other in the switched-off state and the expansion means 13 is not closable.
  • the clothes drying apparatus 1 comprises the controllable first cut-off means 19, the controllable second cut-off means 20 and the controllable third cut-off means 21.
  • This variant particularly reliably blocks the working fluid from moving during a switched-off state of the AC rotary compressor 12, e.g. if the high-pressure side and the low-pressure side of the AC rotary compressor 12 are open against each other in the switched-off state and the expansion means 13 is not closable.
  • the clothes drying apparatus 1 may have no lint filter 4.
  • the clothes drying apparatus 1 may comprise an additional fan for cooling the AC rotary compressor 12.

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

Claims (7)

  1. Wäschetrockenvorrichtung (1),
    - die eine Wärmepumpe (11) mit einem Verdichter (12), einem Verflüssiger (9), einem Expansionsmittel (13) und einem Verdampfer (6) umfasst, die über Arbeitsfluid (F) führende Fluidleitungen (14 bis 17) verbunden sind, und
    - die eine mit dem Verdichter (12) verbundene Steuereinheit (18) umfasst, welche so ausgelegt ist, dass sie den Verdichter (12) in einem Trockenzyklus in einem ersten und einem zweiten Betriebsmodus betreibt,
    wobei
    - es sich bei dem Verdichter (12) um einen Wechselstrom-Rotationsverdichter (12) handelt,
    - der Wechselstrom-Rotationsverdichter (12) in dem ersten Betriebsmodus dauerhaft eingeschaltet ist und
    - der Wechselstrom-Rotationsverdichter (12) in dem zweiten Betriebsmodus abwechselnd ein- und ausgeschaltet wird,
    dadurch gekennzeichnet, dass
    - die Wärmepumpe (11) offene Fluidleitungen (14 bis 17) zum Führen des Arbeitsfluids (F) umfasst, wobei der Wechselstrom-Rotationsverdichter (12) in seinem ausgeschalteten Zustand verhindert, dass das Arbeitsfluid (F) zwischen seiner Hochdruck- und seiner Niederdruckseite fließt, und/oder das Expansionsmittel (13) gezielt zwischen einem offenen und einem geschlossenen Zustand umgeschaltet werden kann und die Steuereinheit (18) so ausgelegt ist, dass sie das Expansionsmittel (13) öffnet, wenn der Wechselstrom-Rotationsverdichter (12) eingeschaltet ist, und das Expansionsmittel (13) schließt, wenn der Wechselstrom-Rotationsverdichter (12) ausgeschaltet ist,
    und/oder
    - die Fluidleitungen (14 bis 17) mindestens ein regelbares Absperrmittel (19 bis 21) umfassen, wobei das mindestens eine regelbare Absperrmittel (19 bis 21) offen ist, wenn der Wechselstrom-Rotationsverdichter (12) in einem Trockenzyklus eingeschaltet ist, und wobei das mindestens eine regelbare Absperrmittel (19 bis 21) geschlossen ist, wenn der Wechselstrom-Rotationsverdichter (12) in einem Trockenzyklus ausgeschaltet ist, und offen ist, wenn der Wechselstrom-Rotationsverdichter (12) in einem Trockenzyklus eingeschaltet ist.
  2. Wäschetrockenvorrichtung (1) nach Anspruch 1, wobei die Steuereinheit (18) so ausgelegt ist, dass sie den Wechselstrom-Rotationsverdichter (12) wiederholt ein- und ausschaltet.
  3. Wäschetrockenvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei die Steuereinheit (18) so ausgelegt ist, dass sie eine Dauer von Zeitfenstern für das Einund das Ausschalten des Wechselstrom-Rotationsverdichters (12) ändert.
  4. Wäschetrockenvorrichtung (1) nach Anspruch 3, wobei die Steuereinheit (18) so ausgelegt ist, dass sie eine Dauer der Zeitfenster bei einem Trockenzyklus ändert.
  5. Wäschetrockenvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei, wenn die Fluidleitungen (14 bis 17) das mindestens eine regelbare Absperrmittel (19 bis 21) umfassen, letzteres genau ein Absperrmittel (19) umfasst, das zwischen dem Expansionsmittel (13) und dem Verdampfer (6) oder zwischen dem Verflüssiger (9) und dem Expansionsmittel (13) angeordnet ist.
  6. Wäschetrockenvorrichtung (1) nach einem der Ansprüche 1 bis 4, wobei das mindestens eine regelbare Absperrmittel (19 bis 21) Folgendes umfasst:
    - ein erstes Absperrmittel (19), das zwischen dem Expansionsmittel (13) und dem Verdampfer (6) oder zwischen dem Verflüssiger (9) und dem Expansionsmittel (13) angeordnet ist,
    - ein zweites Absperrmittel (20), das zwischen dem Verdampfer (6) und dem Verdichter (12) angeordnet ist, und
    - ein drittes Absperrmittel (21), das zwischen dem Verdichter (12) und dem Verflüssiger (9) angeordnet ist.
  7. Verfahren zum Betreiben einer Wäschetrockenvorrichtung (1), die eine Wärmepumpe (11) mit einem Verdichter (12), einem Verflüssiger (9), einem Expansionsmittel (13) und einem Verdampfer (6), die über Arbeitsfluid (F) führende Fluidleitungen (14 bis 17) verbunden sind, und eine mit dem Verdichter (12) verbundene Steuereinheit (18) umfasst, welche so ausgelegt ist, dass sie den Verdichter (12) in einem Trockenzyklus in einem ersten und einem zweiten Betriebsmodus betreibt, wobei es sich bei dem Verdichter um einen Wechselstrom-Rotationsverdichter (12) handelt, und die Steuereinheit so ausgelegt ist, dass sie den Verdichter (12) in einem Trockenzyklus im ersten Betriebsmodus, in dem der Wechselstrom-Rotationsverdichter (12) dauerhaft eingeschaltet ist, und in einem zweiten Betriebsmodus betreibt, in dem der Wechselstrom-Verdichter (12) abwechselnd ein- und ausgeschaltet wird,
    dadurch gekennzeichnet, dass
    - das Arbeitsfluid (F), wenn der Wechselstrom-Rotationsverdichter (12) ausgeschaltet wird, daran gehindert wird, frei durch die Wärmepumpe (11) zu fließen,
    dass
    - die Wärmepumpe (11) offene Fluidleitungen (14 bis 17) zum Führen des Arbeitsfluids (F) umfasst, wobei der Wechselstrom-Rotationsverdichter (12) in seinem ausgeschalteten Zustand verhindert, dass das Arbeitsfluid (F) zwischen seiner Hochdruck- und seiner Niederdruckseite fließt, und/oder das Expansionsmittel (13) gezielt zwischen einem offenen und einem geschlossenen Zustand umgeschaltet werden kann und das Expansionsmittel (13) geöffnet wird, wenn der Wechselstrom-Rotationsverdichter (12) eingeschaltet wird, und geschlossen wird, wenn der Wechselstrom-Rotationsverdichter (12) ausgeschaltet wird,
    und/oder dass
    - die Fluidleitungen (14 bis 17) mindestens ein regelbares Absperrmittel (19 bis 21) umfassen, wobei das mindestens eine regelbare Absperrmittel (19 bis 21) geöffnet wird, wenn der Wechselstrom-Rotationsverdichter (12) in einem Trockenzyklus eingeschaltet wird, und wobei das mindestens eine regelbare Absperrmittel (19 bis 21) geschlossen wird, wenn der Wechselstrom-Rotationsverdichter (12) in einem Trockenzyklus ausgeschaltet wird, und geöffnet wird, wenn der Wechselstrom-Rotationsverdichter (12) in einem Trockenzyklus eingeschaltet wird.
EP19156133.1A 2018-03-02 2019-02-08 Wäschetrocknungsvorrichtung mit wärmepumpe Active EP3533920B1 (de)

Applications Claiming Priority (1)

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ES201830209A ES2724363A1 (es) 2018-03-02 2018-03-02 Aparato secador de ropa con bomba de calor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005062940A1 (de) 2005-12-29 2007-07-05 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät zur Pflege von Wäschestücken
EP2586906B1 (de) * 2011-10-25 2020-06-24 Electrolux Home Products Corporation N.V. Wäschetrockner mit Wärmepumpensystem
EP2796615B1 (de) * 2011-12-20 2019-04-10 Panasonic Corporation Wäschetrockner und verfahren zum reinigen eines verdampfers in dem wäschetrockner
JP2013132417A (ja) * 2011-12-27 2013-07-08 Panasonic Corp 衣類乾燥機
PL2690212T3 (pl) * 2012-07-23 2017-04-28 Whirlpool Corporation Sposób sterowania suszarką do pranej bielizny z systemem pompy ciepła i suszarka do pranej bielizny sterowana takim sposobem
JP2014050500A (ja) * 2012-09-06 2014-03-20 Panasonic Corp 衣類乾燥機
JP6239846B2 (ja) * 2013-04-15 2017-11-29 東芝ライフスタイル株式会社 ヒートポンプ式乾燥機
EP2985466A1 (de) 2014-08-14 2016-02-17 BSH Electrodomésticos España, S.A. Rotationsverdichter, Wärmepumpe und Haushaltsgerät
PL3255203T3 (pl) * 2016-06-09 2020-07-13 BSH Hausgeräte GmbH Urządzenie gospodarstwa domowego zawierające pompę ciepła
EP3425109B1 (de) * 2017-07-07 2022-05-04 Electrolux Appliances Aktiebolag Verfahren für den betrieb eines wäschetrockners mit wärmepumpe oder einer waschmaschine mit wärmepumpe mit trocknungsfunktion

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CN110219152A (zh) 2019-09-10
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EP3533920A1 (de) 2019-09-04
CN110219152B (zh) 2023-03-14

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