EP3124680B1 - Verfahren zur anpassung von betriebsparametern beim trocknen in einem wärmepumpentrockner - Google Patents

Verfahren zur anpassung von betriebsparametern beim trocknen in einem wärmepumpentrockner Download PDF

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Publication number
EP3124680B1
EP3124680B1 EP15178434.5A EP15178434A EP3124680B1 EP 3124680 B1 EP3124680 B1 EP 3124680B1 EP 15178434 A EP15178434 A EP 15178434A EP 3124680 B1 EP3124680 B1 EP 3124680B1
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EP
European Patent Office
Prior art keywords
drying
drum
rotation direction
rotation speed
rotating
Prior art date
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EP15178434.5A
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English (en)
French (fr)
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EP3124680A1 (de
Inventor
Roberto Ragogna
Fabio GARZENA
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Electrolux Appliances AB
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Electrolux Appliances AB
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Priority to EP15178434.5A priority Critical patent/EP3124680B1/de
Priority to CN201610601620.XA priority patent/CN106436241B/zh
Publication of EP3124680A1 publication Critical patent/EP3124680A1/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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/14—Time settings
    • 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/20—Operation modes, e.g. delicate laundry washing programs, service modes or refreshment cycles
    • 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
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • 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
    • D06F2103/06—Type or material
    • 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
    • D06F2103/10—Humidity expressed as capacitance or resistance
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • 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
    • D06F2105/16—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
    • D06F2105/26—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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • 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
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
    • 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 
    • D06F58/206—Heat pump arrangements

Definitions

  • the invention relates to a method of operating a heat-pump dryer during a drying program in a way to provide optimized drying specifically for a low amount of laundry.
  • EP 2 832 921 A1 suggests to operate an electrically heated dryer or a heat-pump dryer dependent on the drying air temperature.
  • the dryer has a common motor for driving the drum and the drying air fan in the forward and backward rotation direction at the nominal rotation speed.
  • the drying air fan is designed such that the conveyance rate is lower when the fan is rotated in the backward direction as compared to the conveyance rate when rotated in the forward direction.
  • the ratio of the periods rotating the forward direction to the periods of rotating in the backward direction is low. If the drying air temperature is reaching a certain level, the ratio of forward/rearward drum and fan rotation is increased.
  • the rotation speed of the heat pump compressor can be higher than in the second phase.
  • thermo protector circuit adapted to cut the power supply to the compressor when predetermined temperature or voltage load thresholds are exceeded. Activation of the thermo protector circuit is detected by monitoring the temperature of the refrigerant, and in response to detecting such activation, a corrective action is performed, such as switching on a compressor cooling fan or modifying drum/process fan motor parameters.
  • a method for operating a heat-pump dryer during a drying program comprises: a cabinet; a drum arranged within the cabinet and being adapted to receive laundry for drying the laundry within the drum using drying air; an air channel adapted to guide the drying air from at least one air outlet at the drum to at least one air inlet at the drum for providing an air circulation arrangement; a drying air fan adapted to convey the drying air through the air circulation arrangement; a heat pump system comprising a first heat exchanger adapted to heat the drying air, a second heat exchanger adapted to cool the drying air for humidity condensation, and a compressor adapted to circulate refrigerant through the first and second heat exchangers; and a temperature sensor adapted to detect a refrigerant temperature of the heat pump system.
  • the dryer comprises: a fan motor adapted to drive the drying air fan selectively in a first rotation direction or in a second rotation direction and/or to drive the drying air fan selectively at least at a first rotation speed or at a second rotation speed, and a drum motor adapted to drive the drum selectively in a first rotation direction or in a second rotation direction.
  • the dryer further comprises: a motor adapted to drive in a synchronized manner the drying air fan and the drum selectively in a first rotation direction or in a second rotation direction.
  • the heat pump system further comprises an expansion device and/or a cooling air fan for cooling the compressor or an auxiliary heat exchanger of the heat pump system and/or one or more further components as described below in the detailed embodiment.
  • the dryer may be a dryer or a washer-dryer implementing the drying function/program.
  • the air circulation arrangement is provided by the air channel and the fluidly connected drum.
  • the drum may be arranged in a tub and the at least one inlet and/or outlet opening is provided at the tub.
  • the drying air guiding by the tub is providing the connection between the drum and the at least one inlet and/or outlet where applicable.
  • the drum may be rotated by a drum motor around a horizontal axis, around an axis inclined relative to the vertical axis, or around a vertical axis.
  • a drum motor around a horizontal axis, around an axis inclined relative to the vertical axis, or around a vertical axis.
  • one motor is provided for rotating the drum and another motor is provided for rotating the drying air fan.
  • the method comprises: starting a drying program; monitoring the refrigerant temperature of the heat pump system; and in dependency of the temperature of the heat pump system, adapting at least one of:
  • An adaptation may be made for the drying air fan for example by adapting the ratio of rotating the fan in the first rotation direction / in the second rotation direction, and/or the adaption is made by adapting the ratio of the first rotation speed / the second rotation speed.
  • different fan rotation speeds result in different conveyance rates (at least in one rotation direction).
  • the drum motor also drives the drying air fan, the ratios are both synchronously increased.
  • the drum motor and/or the fan motor are variable speed motors.
  • the first rotation direction can also be denoted as 'forward' rotation direction or clockwise direction.
  • the second rotation direction can be denoted as 'backward' rotation direction or counterclockwise direction. From the construction aspect a preference for the 'forward' direction is given by mechanical layout and/or energy efficiency and/or drying air flow efficiency and/or laundry movement in drum.
  • the drying air fan is designed such that at the same rotation speed or rotation speeds the conveyance rate when rotating in the first rotation direction is higher than the conveyance rate when rotating in the second rotation direction.
  • the drying program has a first drying phase which is before the temperature reaches (the first time) at or above the first threshold value, and a second drying phase after the first drying phase.
  • Adapting the temporal ratios in dependency of the temperature of the heat pump system comprises: if the temperature of the heat pump system is at or above a first threshold value, changing the drying mode of the drying program from a first drying phase to a second drying phase by one or more of: a) increasing the temporal ratio of rotating the drum in the first rotation direction to rotating the drum in the second rotation direction, b) increasing the temporal ratio of rotating the drying air fan in the first rotation direction to rotating the drying air fan in the second rotation direction, and c) increasing the temporal ratio of rotating the drying air fan at the first rotation speed to rotating the drying air fan at the second rotation speed or changing rotating the drying air fan at the second rotation speed to rotating the drying air fan at the first rotation speed, wherein the first rotation speed is higher than the second rotation speed.
  • the compressor when it is detected that the temperature of the heat pump system is at or above the first threshold value, the compressor is deactivated or is deactivated after a predetermined delay time. Additionally or alternatively a fan for cooling the compressor is activated.
  • Adapting in dependency of the temperature may be provided in that, when the drum is rotating in the first rotation direction, the rotation speed is higher as compared to the rotation speed when the drum is rotated in the second rotation direction. And/or, when the drum is rotating in the first rotation direction, the duration of uninterrupted rotation in the first rotation direction is longer than the duration of uninterrupted rotation of the drum in the second rotation direction.
  • Adapting in dependency of the temperature may be provided additionally or alternatively in that, when the drying air fan is rotating in the first rotation direction, the rotation speed is higher as compared to the rotation speed when the drying air fan is rotated in the second rotation direction. And/or, when the drying air fan is rotating in the first rotation direction, the duration of uninterrupted rotation in the first rotation direction is longer than the duration of uninterrupted rotation of the drying air fan in the second rotation direction.
  • drum motor speed is adapted in dependency of the temperature of the heat pump system, or the rotation speed of drum rotation in the first direction is adapted in dependency of the temperature of the heat pump system while the rotation speed of rotating the drum in the second rotation direction is constant.
  • the drum motor speed is adapted in dependency of the temperature of the heat pump system by one of the following: if the temperature of the heat pump system is at or above a first threshold value, increasing the absolute value of the drum rotation speed; and if the temperature of the heat pump system is at or above a first threshold value, increasing the rotation speed of rotating the drum in the first rotation direction and maintaining the rotation speed of rotating the drum in the second rotation direction.
  • the fan motor may be adapted to drive the drying air fan selectively at least at a first rotation speed and at a second rotation speed, wherein the first rotation speed is higher than the second rotation speed. Then the method may further comprise: when the temperature of the heat pump system is at or above the first threshold value, increasing the temporal ratio of rotating the drying air fan at the first rotation speed to rotating the drying air fan at the second rotation speed.
  • the drying program comprises at least a first and optionally a second drying phase and subsequent to the drying phases a cooling phase, wherein in the cooling phase at least one of the following is applied:
  • drying program is proceeding to the cooling phase in dependency of one or more of the following conditions:
  • a drying phase may be provided in which the laundry at least temporally is moved in a 'cradle movement'.
  • This drying phase may be a pre-drying phase preceding a or the first drying phase, wherein in the pre-drying phase, the method provides one or more of the following:
  • control unit may be adjusted or adapted for the different phases of the drying program in dependency of user selection or process parameters. For example one or more of the following applies:
  • the dryer may be implemented by a washer dryer providing at least one washing program.
  • a tub is arranged in the cabinet and the drum is arranged in the tub, and/or the at least one outlet of the drum is at least one outlet of the tub, or the at least one inlet of the drum is at least one inlet of the tub, or the at least one outlet of the drum is at least one outlet of the tub and the least one inlet of the drum is at least one inlet of the tub, and/or the fan is driven by a or the motor independent of a or the motor driving the drum.
  • the drum and fan can be rotated/activated independent of each other. If this option is provided the speed and/or direction of rotation can be adjusted independent of each other
  • the method when the drying program is started, provides immediately at the beginning of the drying program a phase of detecting whether laundry is loaded into the drum or not.
  • a humidity sensor e.g. conductivity sensor
  • the presence of load in the drum is determined by evaluating the drum and/or fan motor parameters (current and/or torque and/or power and/or phase shift).
  • the dryer may comprise an option selector to be activated and/or a program selector for setting a drying program by the user for drying silk laundry or for drying a laundry load of maximum or less than 3 kg, 2 kg, 1 kg, 0.8 kg or 0.5 kg.
  • the laundry is dried according to any of the above method and embodiments thereof.
  • the method and/or the dryer implementing the method may comprise one or more features and/or elements and/or steps in any arbitrary combination or sub-combination as disclosed above and/or below in the detailed embodiment.
  • Fig. 1 shows a perspective outer appearance of an exemplary laundry dryer 2.
  • the laundry dryer is a dryer only, but in alternative embodiments the dryer function according to the control method is implemented by a washer-dryer in which the rotatable drum is arranged in a tub and which provides a washing arrangement including (for example) a detergent dispenser, a heater for heating wash liquid and a drain pump for draining out of the liquids.
  • the laundry dryer 2 has an outer housing 4 or cabinet including a front wall 6. At the front wall 6 a loading opening 8 is provided which is closed by a door 10.
  • the dryer is a front-loading dryer having a horizontal drum rotation axis, but in alternative embodiments the drum may be inclined relative to the horizontal and vertical directions, or the dryer may be a vertical rotation axis dryer in which the drum rotates around a vertical axis and where top-loading is provided. This correspondingly applies for the washer-dryer implementing the drying program.
  • the dryer 2 has a control panel 12 arranged at the upper region of the front wall 6 and a condensate drawer 14 in which the condensate collected from drying is stored until removal by the user.
  • the drum 16 is arranged inside the housing 4, in which laundry 18 is received.
  • the flow of drying air F is indicated by the arrows, wherein the drying air F leaves the drum 16 at an outlet 24 and enters a process air channel 20 at the front channel 20c.
  • the drying air is guided through a fluff filter element 26 towards a second heat exchanger 34 and a first heat exchanger 32.
  • the first and second heat exchangers 32, 34 are arranged in a battery channel 20a of the process air channel 20.
  • the first heat exchanger 32 is a condenser which heats the drying air
  • the second heat exchanger 34 is an evaporator which cools the drying air for humidity removal in form of condensed water.
  • the drying air leaving the first heat exchanger 32 is entering a rear channel 20b in which a drying air fan 28 is arranged which conveys the drying air.
  • the fan 28 is driven by a motor 30 which at same time drives the rotation of the drum 16.
  • a belt driven by the motor 30 is wound around the drum mantel for driving the fan.
  • the drum and fan 28 are driven in a synchronous manner according to the gear ratio.
  • Synchronous rotation includes a forward and backward rotation according to the motor forward and backward rotation.
  • the fan speed is identical to the motor speed as the fan is arranged on an axis of the motor 30, while via the belt the rotation of the motor is gear-reduced in an exemplary ratio of motor rotation speed/drum rotation speed of 50:1.
  • the first and second heat exchangers 32, 34 are part of a heat pump system 44 which further comprises an expansion device 38 and a compressor 36.
  • a refrigerant loop 40 is formed, wherein the refrigerant pumped by the compressor 36 passes first the condenser 32, is forwarded to the expansion device 38 from where it expands into the second heat exchanger 34 and from where it is sucked into the compressor 36.
  • Heat can be removed from the heat pump system (in addition to the heat deposited in the drying air and laundry for drying the laundry) by activating a cooling air fan 42 which provides a flow of cooling air from the outside of the cabinet 4 towards the outer surfaces of the compressor 36. After passing the compressor 36, the cooling air is exhausted out of the cabinet 4.
  • the condensate that condenses at the evaporator 34 flows down and collects in a condensate collector 48. From the condensate collector 48 the condensate is pumped by a draining pump 50 through a drain conduit 52 into the condensate drawer 14 from where it can be removed by the user as mentioned above.
  • a temperature sensor is provided which detects the outlet temperature To of the drying air.
  • another temperature sensor is provided which detects the inlet temperature Ti of the drying air.
  • a temperature sensor is provided which detects the refrigerant temperature Tr at this position.
  • the outlet of the drying air is arranged in a gasket which is provided between the tub surrounding the drum and the front wall 6 of the washer-dryer.
  • the inlet 22 of the drying air is then provided at an upper and rear side position of the tub from where the drying air enters the drum 16.
  • Such drum has a perforated back wall and/or peripheral drum mantel through which the drying air enters into the drum.
  • the drying air flow F can also be reverted in view of the inlet/outlet of the washer-dryer as described here.
  • Fig. 3 is a block diagram of components of the dryer 2 that interact for enabling a control unit 60 to control the drying operation or program.
  • the control unit 60 has a memory 62 in which program parameters and look-up tables are stored such that the control unit, by retrieving corresponding data from the memory 62, can control different basic drying programs preferably under conditions as set by the user via option selectors at the control panel 12.
  • Such user-settable options are for example: the final drying degree, the load of the laundry loaded by the user and inputted by him/her, the type of laundry, the duration of drying, a silent- or night-mode option by which the operation noise can be reduced by corresponding input of the user under the control of the control unit, and/or an energy option.
  • the control unit 60 receives the signals from the sensors for the refrigerant temperature Tr, the inlet temperature Ti of the drying air, the outlet temperature To of the drying air, and a humidity signal H from the humidity sensor (e.g. conductivity electrodes).
  • the control unit sends control signals to a drum motor inverter 64 and receives operation parameters therefrom.
  • the drum motor inverter 64 supplies the power to the motor 30 driving the drum 16 and the drying air fan 28.
  • the control unit 60 sends control signals to a compressor motor inverter 66 and receives operation parameters therefrom.
  • the inverter 66 powers a compressor motor 67 for driving the compressor 36.
  • the control unit 60 controls the draining pump 50, a motor 68 for driving the cooling air fan 68 and optionally, if a separate motor 70 is provided for the drying air fan 28, the drying air fan motor 70.
  • the separate motor 70 is provided, such that the rotation speed of the drying air fan 28 can be set by the control unit 60 independent of the drum rotation speed via inverter 64 and drum motor 30.
  • the separate motor 70 is provided, the motor 30 does not drive the drying air fan 28.
  • an exemplary drying program is described which is designed to efficiently dry small laundry loads, in particular valuable and/or delicate laundry pieces which the user wishes to dry separately from the other laundry types and within a reasonable drying time.
  • the drying program is specifically convenient for drying silk laundry like silk scarfs or silk shirts.
  • the time diagram of Fig. 4 shows a complete run of the drying program with the phases A, B1, B2, B3 and C.
  • the diagram shows as curve Tr the temporal development of the refrigerant temperature, where the temperature in °C is indicated at the right Y-axis.
  • the curve D shows the absolute value of the drum rotation speed.
  • the left Y-axis indicates the motor rotation speed D in rpm, wherein the gear ratio of between motor rotation speed and drum rotation speed is 50:1 (when the motor axis turns 50 times the drum rotates a full 360° rotation.
  • FIG. 4 shows in the lower region the drum/motor rotation direction with the two states CW and CCW.
  • the clockwise rotation direction or first rotation direction CW is indicated in a height of corresponding to 10°C on the right Y-axis and the counter clockwise rotation CCW or second rotation direction is shown in a height corresponding to 2°C at the right Y-axis.
  • CW has the value 10
  • CCW has the value 2.
  • Phase A proceeds to a pre-drying phase B1 where the drying already has been started and during which the laundry pieces within the drum 16 are equally distributed and detangled.
  • phase B1 the program proceeds to a first drying phase B2 during which the laundry drying is continued and the refrigerant temperature Tr is further increasing.
  • the drying program proceeds from phase B2 to a second drying phase B3 during which the laundry is dried up to a predetermined final humidity Hset.
  • the drying program proceeds to a cooling phase C during which laundry cooling is provided for a predetermined duration.
  • Fig. 5 shows the phases A and B1 has well as the beginning of phase B2 in more detail.
  • the conductivity sensor is provided and the control unit 60 monitors and averages the conductivity/humidity signal H. Additionally or alternatively the signal sent from the drum motor inverter 64 to the control unit 60 is evaluated, whether for example the torque signal, the current signal, the power signal, the phase signal, the voltage signal or any other signal available from the inverter 64 indicates whether laundry has been loaded or not.
  • the drying program is aborted and a respective indication is displayed on the control panel 12 to motivate the user to check whether laundry has correctly been loaded - compare S12 in Fig. 7 .
  • phase A With the start of the drying program at the beginning of phase A, the refrigerant temperature Tr continuously rises during the phases A, B1 and B2 until the threshold Tr1 is exceeded.
  • phase A is ended and phase B1 started.
  • the duration of CW and CCW rotation are selected such short, such that the drum does not provide a full turn.
  • the drum is rotated for three seconds with 15 rpm in each rotation direction, such that the rotation angle of the drum within these periods is only 270°.
  • the laundry twisted before in the initialization phase A (e.g. in the form of a laundry roll) is detangled and flatly distributed within the drum. This increases the surface area of the laundry pieces and improves removal of humidity from the laundry.
  • the rotation directions in these extended rotation periods following to each cradle period in phase B1 are in the sequence of CCW-CW-CCW. It has been found that by operating the drum in the CCW rotation direction the small number of normally light-weight pieces of laundry is not sucked by the air flow towards the outlet 24 of the drum 16 where the inlet grill of the fluff filter element 26 is arranged. As the drying air fan 28 is designed such that at the same rotation speed in CCW rotation direction the air flow rate is much lower than in the CW rotation direction, the risk that the laundry is transported towards and fixed at the outlet 24 is much lower in CCW direction than in CW direction.
  • the phase B1 is provided for a predetermined duration and then the drying program proceeds to the first drying phase B2.
  • a pre-drying of the laundry pieces was achieved and the laundry was detangled and distributed in the drum, such that in the first drying phase B2 the drying can be intensified by increasing the average air flow.
  • Each of the periods of CW rotation is longer than the respective following period of CCW rotation. In average this results in a higher air flow rate through the drum as compared to the initialization phase B1. Due to the higher air flow, more humidity can be removed from the laundry.
  • the highest drum rotation speed D3 and thus the highest fan rotation speed is lower than the maximum possible or nominal rotation speed D4 (corresponding to 2750 rpm motor speed and fan rotation speed).
  • the refrigerant temperature Tr increases in waves until reaching the threshold Tr1.
  • the reason for the increase in waves is that during rotation of the drum in CCW direction the drying air flow rate is reduced and less heat is removed from the condenser 32 such that the refrigerant temperature detected at the outlet of the condenser 32 increases in these periods.
  • the drying air flow rate is higher and more heat is removed from condenser 32.
  • the refrigerant temperature is decreasing.
  • the net effect of increase and decrease is that the refrigerant temperature Tr is rising.
  • Fig. 6 shows in detail the transition from the first drying phase B2 to the second drying phase B3.
  • the ratio of the duration of CW rotation direction divided by the duration of rotation of CCW rotation direction is increased. This increase of the ratio is true for each one of the repeating periods of clockwise CW rotation period followed by a CCW rotation period, as well as for the average over the total duration in B3 (when compared with the respective ratios in phase B2).
  • the second drying phase B3 is continued until a predetermined laundry humidity Hset is reached or is below the predetermined target humidity Hset of the laundry.
  • the humidity H is determined from the humidity sensor by evaluation in the control unit 60. Alternatively based on the starting humidity, the laundry load and other parameters the control unit 60 can estimate the duration of the phase B3 (or the total drying time of the drying program) such that the second drying phase B3 is terminated as soon as the estimated time is lapsed.
  • the duration of CW rotation is shorter than the duration of the CCW rotation during the cooling phase C and also cooling phase C is terminating with a CCW rotation.
  • Fig. 7 shows a flow diagram of the drying program.
  • the drying program is started at S0 and an increment counter with the variable n is set to zero at S2.
  • Initialization phase A is started during which it is detected whether wet laundry is present in the drum 16 or not.
  • Initialization phase A is executed for a predetermined period and proceeds to S6 where it is checked whether load is in the drum. If no load was detected, the program proceeds to S6 where it is checked whether the count n is less than a predetermined count N. If count n is not less than the predetermined count N, in S12 the drying program aborts and the user is informed via the display at the control panel 12 that an error occurred. For example by displaying the question "Load Correct?" Optionally it can be checked by the initialization phase A (S4 + modified S6) whether the load is above a threshold weight which would not allow to properly execute the drying program dedicated for small laundry loads.
  • the program proceeds to S14 where the pre-drying phase B1 or cradle phase is executed by distributing or spreading the laundry within the drum by the movements and reduced drying air flow rate as described above.
  • the pre-drying phase B1 is continued in this example for 3 minutes.
  • the program proceeds to S16 for executing the first drying phase B2 which is the main drying phase.
  • the main drying phase B2 is continued in the loop S16-S18-S20 as long as either the refrigerant temperature Tr has exceeded the refrigerant threshold Tr1 (step S18) or the laundry has already reached a humidity H lower than the predetermined final humidity Hset (step S20).
  • the program proceeds to S22 for executing the second drying phase B3.
  • the program proceeds to the cooling phase C in S26. Otherwise the program proceeds back to S16.
  • the loop S22-S24 is repeatedly executed until the laundry humidity H is less than the target humidity Hset. If in S24 the laundry humidity H ⁇ Hset, then the program proceeds to S26 where the cooling phase C is executed for 150 sec in this example.
  • Phase Drum Rotation Speed D + Duration (motor speed) Phase A off: 2 sec CW: 180 sec @ 40 rpm (2000 rpm) off: 2 sec CCW: 15 sec @ 40 rpm (2000 rpm) Phase B 1 off: 3 sec CCW: 3 sec @ 15 rpm (750 rpm) off: 3 sec CW: 3 sec @ 15 rpm (750 rpm) off: 3 sec CCW: 3 sec @ 15 rpm (750 rpm) off: 3 sec CW: 40 sec @ 46 rpm (2300 rpm) off: 3 sec CCW: 3 sec @ 15 rpm (750 rpm) off: 3 sec CW: 3 sec @ 15 rpm (750 rpm) off: 3 sec CCW: 3 sec @ 15 rpm (750 rpm) off: 3 sec CCW: 3 sec @ 15 rpm (750 rpm) off: 3 sec CCW: 3 sec @ 15 rpm (750 rpm) off: 3 sec CCW: 3 sec @ 15 rpm (750
  • the rotation speeds given here are only examples for optimized parameters applicable in one model of dryer.
  • the absolute values of the rotation speeds and the durations in each rotation direction have to be adapted in dependency of one or more of: the drum diameter, the drum internal design, the gear ratio between the drum motor rotation speed and the drum rotation speed, possibly (if not 1:1) the gear ratio between drum or drying air fan motor rotation speed and drying air fan rotation speed, the conveyance capacity of the drying air fan, the drying air flow resistance, and the geometry of the at least one drying air outlet 24 (and the design of the entrance grill of the fluff filter element 26.
  • first action is to reduce the risk that the laundry is getting stuck and twisted.
  • the CW drum rotation speed has been reduced form the nominal speed.
  • the nominal speed is in a dryer-only (no washer dryer) or is for the standard drying program in a washer dryer 2900 rpm for cotton and 2750 rpm for other cycles.
  • the nominal speed is reduced to 2300 rpm. This speed reduction decreases airflow enough to allow silk piece to tumble freely in the drum without getting stuck between drum and filter.
  • drum movement CCW at the reduced speed is able to well "open” (or lay out) the clothes such that the opening effect of the cradle movement in phase B1 is more effective in crease prevention.
  • the main part of drying cycle is performed with drum reversing (e.g. 2 sec OFF/ 90 sec 2300 rpm CW/2 sec OFF/30 sec CCW).
  • phase B3 After the reach of NTC temperature threshold Tr1, a safer motor reversing is activated in drying phase B3.
  • the main purpose of phase B3 is to increase average airflow: drum speed for CW direction is increased to 2750 rpm and its duration is extended to 240sec, while CCW rotation has been reduced to 10 sec but always to 2300 rpm.

Landscapes

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

Claims (14)

  1. Verfahren zum Betreiben eines Wärmepumpentrockners (2) während eines Trockenprogramms, wobei der Trockner Folgendes umfasst:
    ein Gehäuse (4),
    eine Trommel (16), die innerhalb des Gehäuses angeordnet ist und dafür eingerichtet ist, Wäsche (18) zum Trocknen der Wäsche innerhalb der Trommel unter Verwendung von Trocknungsluft (F) aufzunehmen,
    einen Luftkanal (20), der dafür eingerichtet ist, die Trocknungsluft von wenigstens einem Luftauslass (24) an der Trommel (16) zu wenigstens einem Lufteinlass (22) an der Trommel zu leiten, zum Bereitstellen einer Luftumwälzungsanordnung,
    ein Trocknungsluftgebläse (28), das dafür eingerichtet ist, die Trocknungsluft (F) durch die Luftumwälzungsanordnung zu befördern, wobei das Trocknungsluftgebläse (28) derart ausgelegt ist, dass bei der gleichen Drehgeschwindigkeit oder den gleichen Drehgeschwindigkeiten die Fördermenge, wenn es sich in der ersten Drehrichtung (CW) dreht, höher ist als die Fördermenge, wenn es sich in der zweiten Drehrichtung (CCW) dreht,
    eine Wärmepumpenanlage (44), die einen ersten Wärmetauscher (32), der dafür eingerichtet ist, die Trocknungsluft zu erwärmen, einen zweiten Wärmetauscher (34), der dafür eingerichtet ist, die Trocknungsluft zur Feuchtigkeitskondensation abzukühlen, und einen Verdichter (36), der dafür eingerichtet ist, ein Kühlmittel durch den ersten und den zweiten Wärmetauscher umzuwälzen, umfasst,
    einen Temperatursensor, der dafür eingerichtet ist, eine Kühlmitteltemperatur (Tr) der Wärmepumpenanlage (44) zu erfassen, und
    a) einen Gebläsemotor (70), der dafür eingerichtet ist, das Trocknungsluftgebläse (28) selektiv in einer ersten Drehrichtung (CW) oder in einer zweiten Drehrichtung (CCW) zu drehen oder das Trockenluftgebläse selektiv mit einer ersten Drehgeschwindigkeit oder mit einer zweiten Drehgeschwindigkeit anzutreiben, und einen Trommelmotor (30), der dafür eingerichtet ist, die Trommel (16) selektiv in einer ersten Drehrichtung (CW) oder in einer zweiten Drehrichtung (CCW) zu drehen, oder
    b) einen Motor (30), der dafür eingerichtet ist, das Trocknungsluftgebläse (28) und die Trommel (16) selektiv in einer ersten Drehrichtung (CW) oder in einer zweiten Drehrichtung (CCW) zu drehen,
    wobei das Trocknungsprogramm wenigstens eine erste Trocknungsphase (B2) und eine zweite Trocknungsphase (B3) umfasst,
    wobei das Verfahren Folgendes umfasst:
    Starten eines Trocknungsprogramms,
    Überwachen der Kühlmitteltemperatur (Tr) der Wärmepumpenanlage (44) und
    in Abhängigkeit von der Temperatur (Tr) der Wärmepumpenanlage Anpassen wenigstens eines von Folgendem:
    - des zeitlichen Verhältnisses des Drehens der Trommel (16) in der ersten Drehrichtung (CW) zum Drehen der Trommel in der zweiten Drehrichtung (CCW),
    - des zeitlichen Verhältnisses des Drehens des Trocknungsluftgebläses (28) in der ersten Drehrichtung (CW) zum Drehen des Trocknungsluftgebläses in der zweiten Drehrichtung (CCW) und
    - des zeitlichen Verhältnisses des Drehens des Trocknungsluftgebläses mit der ersten Drehgeschwindigkeit zum Drehen des Trocknungsluftgebläses mit der zweiten Drehgeschwindigkeit oder des Wechselns des Drehens des Trocknungsluftgebläses mit der zweiten Drehgeschwindigkeit zum Drehen des Trocknungsluftgebläses mit der ersten Drehgeschwindigkeit, wobei die erste Drehgeschwindigkeit höher ist als die zweite Drehgeschwindigkeit,
    wobei das Anpassen der zeitlichen Verhältnisse in Abhängigkeit von der Temperatur (Tr) der Wärmepumpenanlage (44) Folgendes umfasst: falls die Temperatur der Wärmepumpenanlage bei oder über einem ersten Schwellenwert (Tr1) liegt, Wechseln des Trocknungsmodus des Trocknungsprogramms von der ersten Trocknungsphase (B2) zu der zweiten Trocknungsphase (B3) durch eines oder mehrere von Folgendem:
    - Steigern des zeitlichen Verhältnisses des Drehens der Trommel (16) in der ersten Drehrichtung (CW) zum Drehen der Trommel in der zweiten Drehrichtung (CCW),
    - Steigern des zeitlichen Verhältnisses des Drehens des Trocknungsluftgebläses (28) in der ersten Drehrichtung (CW) zum Drehen des Trocknungsluftgebläses in der zweiten Drehrichtung (CCW) und
    - Steigern des zeitlichen Verhältnisses des Drehens des Trocknungsluftgebläses mit der ersten Drehgeschwindigkeit zum Drehen des Trocknungsluftgebläses mit der zweiten Drehgeschwindigkeit oder des Wechselns des Drehens des Trocknungsluftgebläses mit der zweiten Drehgeschwindigkeit zum Drehen des Trocknungsluftgebläses mit der ersten Drehgeschwindigkeit, wobei die erste Drehgeschwindigkeit höher ist als die zweite Drehgeschwindigkeit.
  2. Verfahren nach Anspruch 1, wobei,
    wenn die Trommel (16) in der ersten Drehrichtung (CW) gedreht wird, die Drehgeschwindigkeit, verglichen mit der Drehgeschwindigkeit, wenn die Trommel in der zweiten Drehrichtung (CCW) gedreht wird, höher ist, oder,
    wenn die Trommel in der ersten Drehrichtung gedreht wird, die Dauer der ununterbrochenen Drehung in der ersten Drehrichtung länger ist als die Dauer der ununterbrochenen Drehung der Trommel in der zweiten Drehrichtung.
  3. Verfahren nach einem der vorhergehenden Ansprüche, wobei,
    wenn das Trocknungsluftgebläse (28) in der ersten Drehrichtung (CW) gedreht wird, die Drehgeschwindigkeit, verglichen mit der Drehgeschwindigkeit, wenn das Trocknungsluftgebläse in der zweiten Drehrichtung (CCW) gedreht wird, höher ist, oder,
    wenn das Trocknungsluftgebläse in der ersten Drehrichtung gedreht wird, die Dauer der ununterbrochenen Drehung in der ersten Drehrichtung länger ist als die Dauer der ununterbrochenen Drehung des Trocknungsluftgebläses in der zweiten Drehrichtung.
  4. Verfahren nach einem der vorhergehenden Ansprüche,
    wobei die Trommelmotorgeschwindigkeit oder die Trommeldrehgeschwindigkeit (D) in Abhängigkeit von der Temperatur (Tr) der Wärmepumpenanlage (44) angepasst wird oder
    wobei die Trommeldrehgeschwindigkeit (D) in der ersten Drehrichtung (CW) in Abhängigkeit von der Temperatur (Tr) der Wärmepumpenanlage angepasst wird, während die Drehgeschwindigkeit des Drehens der Trommel in der zweiten Drehrichtung (CCW) konstant ist.
  5. Verfahren nach Anspruch 4, wobei die Trommeldrehgeschwindigkeit (D) in Abhängigkeit von der Temperatur (Tr) der Wärmepumpenanlage (44) angepasst wird durch eines von Folgendem:
    - falls die Temperatur der Wärmepumpenanlage bei oder über einem ersten Schwellenwert (Tr1) liegt, Steigern des absoluten Wertes der Trommeldrehgeschwindigkeit (D) und
    - falls die Temperatur der Wärmepumpenanlage bei oder über einem ersten Schwellenwert (Tr1) liegt, Steigern der Trommeldrehgeschwindigkeit (D) in der ersten Drehrichtung (CW) und Beibehalten der Trommeldrehgeschwindigkeit in der zweiten Drehrichtung (CCW).
  6. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Trocknungsluftgebläse (28) durch den Motor (70) unabhängig von dem Motor (30), der die Trommel (16) antreibt, angetrieben wird.
  7. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Trocknungsprogramm wenigstens eine erste und eine zweite Trocknungsphase (B2, B3) und anschließend an die Trocknungsphasen eine Abkühlungsphase (C) umfasst, wobei in der Abkühlungsphase wenigstens eines von Folgendem angewendet wird:
    - das Verhältnis der Dauer des Drehens der Trommel (16) in der ersten Drehrichtung (CW) zu der Dauer des Drehens der Trommel in der zweiten Drehrichtung (CCW), wird, verglichen mit der vorhergehenden oder zweiten Trocknungsphase (B3), vermindert, oder dieses Verhältnis wird auf unter 1 vermindert,
    - das Verhältnis der Dauer des Drehens des Trocknungsluftgebläses (28) in der ersten Drehrichtung (CW) zu der Dauer des Drehens des Trocknungsluftgebläses in der zweiten Drehrichtung (CCW), wird, verglichen mit der vorhergehenden oder zweiten Trocknungsphase (B3), vermindert, oder dieses Verhältnis wird auf unter 1 vermindert,
    - die Drehgeschwindigkeit (D) der Trommel in der ersten Drehrichtung (CW) wird, verglichen mit der Drehgeschwindigkeit in der vorhergehenden oder zweiten Trocknungsphase (B3), verringert,
    - die Drehgeschwindigkeit (D) der Trommel in der zweiten Drehrichtung (CCW) wird, verglichen mit der Drehgeschwindigkeit in der vorhergehenden oder zweiten Trocknungsphase (B3), verringert,
    - die Drehgeschwindigkeit des Trocknungsluftgebläses (28) in der ersten Drehrichtung (CW) wird, verglichen mit der Drehgeschwindigkeit in der vorhergehenden oder zweiten Trocknungsphase (B3), verringert, und
    - die Drehgeschwindigkeit des Trocknungsluftgebläses (28) in der zweiten Drehrichtung (CCW) wird, verglichen mit der Drehgeschwindigkeit in der vorhergehenden oder zweiten Trocknungsphase (B3), verringert.
  8. Verfahren nach Anspruch 7, wobei das Trocknungsprogramm zu der Abkühlungsphase (C) in Abhängigkeit von einer oder mehreren der folgenden Bedingungen fortschreitet:
    - die Wäschefeuchtigkeit (H) liegt bei oder unter einer vorbestimmten Schwellen- oder Ziel-Wäschefeuchtigkeit (Hset),
    - ein Parameter, der Wäschefeuchtigkeit anzeigt, in niedriger als ein Sollwert oder gleich demselben,
    - die Temperatur (To) der aus der Trommel (16) abgegebenen Luft ist höher als ein Sollwert,
    - ein Temperaturgefälle (ΔTo) der aus der Trommel abgegebenen Luft ist höher als ein Sollwert und
    - eine Trocknungszeit, wie durch einen Benutzer festgesetzt oder wie durch den Trockner (2) bestimmt, ist abgelaufen.
  9. Verfahren nach einem der vorhergehenden Ansprüche, wobei eine Vortrocknungsphase (B1) einer oder der ersten Trocknungsphase (B2) vorausgeht, wobei das Verfahren in der Vortrocknungsphase eines oder mehrere von Folgendem vorsieht:
    - es werden ein oder mehrere Zeiträume bereitgestellt, in denen die Trommel (16) abwechselnd in der ersten und der zweiten Drehrichtung (CW, CCW) gedreht wird, wobei in jeder Drehrichtung der Drehwinkel der Drehung geringer als 360°, 270°, 200°, 180°, 150° oder 100° ist,
    - das Verhältnis des Drehens der Trommel (16) in der ersten Drehrichtung (CW) zu der Dauer des Drehens der Trommel in der zweiten Drehrichtung (CCW) ist niedriger als in der folgenden ersten Trocknungsphase (B2),
    - das Verhältnis des Drehens des Trocknungsluftgebläses (28) in der ersten Drehrichtung (CW) zu der Dauer des Drehens des Trocknungsluftgebläses in der zweiten Drehrichtung (CCW) ist niedriger als in der folgenden ersten Trocknungsphase (B2),
    - die Dauer des Drehens der Trommel (16) oder des Trocknungsluftgebläses (28) in der ersten Drehrichtung (CW) in der Vortrocknungsphase (B1) ist kürzer als in der ersten Trocknungsphase (B2),
    - die Dauer des Drehens der Trommel oder des Trocknungsluftgebläses in der zweiten Drehrichtung (CCW) in der Vortrocknungsphase (B1) ist kürzer als in der ersten Trocknungsphase (B2),
    - die Drehgeschwindigkeit der Trommel (16) in der ersten Drehrichtung ist, verglichen mit der Drehgeschwindigkeit (D) in der folgenden ersten Trocknungsphase, niedriger,
    - die Drehgeschwindigkeit (D) der Trommel (16) in der zweiten Drehrichtung ist, verglichen mit der Drehgeschwindigkeit in der folgenden ersten Trocknungsphase, niedriger,
    - die Drehgeschwindigkeit des Trocknungsluftgebläses (28) in der ersten Drehrichtung ist, verglichen mit der Drehgeschwindigkeit in der folgenden ersten Trocknungsphase, niedriger, und
    - die Drehgeschwindigkeit des Trocknungsluftgebläses (28) in der zweiten Drehrichtung ist, verglichen mit der Drehgeschwindigkeit in der folgenden ersten Trocknungsphase, niedriger.
  10. Verfahren nach einem der vorhergehenden Ansprüche, wobei eines oder mehrere von Folgendem:
    - dem Verhältnis des Drehens der Trommel (16) in der ersten Drehrichtung (CW) zu der Dauer des Drehens der Trommel in der zweiten Drehrichtung (CCW),
    - dem Verhältnis des Drehens des Trocknungsluftgebläses (28) in der ersten Drehrichtung zu der Dauer des Drehens des Trocknungsluftgebläses in der zweiten Drehrichtung,
    - der Drehgeschwindigkeit (D) der Trommel (16) in der ersten Drehrichtung,
    - der Drehgeschwindigkeit (D) der Trommel (16) in der zweiten Drehrichtung,
    - der Drehgeschwindigkeit des Trocknungsluftgebläses (28) in der ersten Drehrichtung und
    - der Drehgeschwindigkeit des Trocknungsluftgebläses (28) in der zweiten Drehrichtung,
    in einer oder mehreren der folgenden Phasen:
    - einer oder der Vortrocknungsphase (B1),
    - einer oder der ersten Trocknungsphase (B2),
    - einer oder der zweiten Trocknungsphase (B3) und
    - einer oder der Abkühlungsphase (C)
    abhängig sind von einem oder mehreren von Folgendem:
    - einem Wäschebehandlungsprogramm oder Wäschebehandlungsoptionen, die durch einen Benutzer über eine Eingabeeinrichtung (12) des Trockners (2) eingegeben werden,
    - einer Wäscheart, wie durch einen Benutzer festgesetzt oder wie durch den Trockner abgeschätzt,
    - der Dauer des Wäschebehandlungsprogramms, das durch einen Benutzer festgesetzt ist oder wie durch den Trockner abgeschätzt,
    - in dem Fall, dass das Trocknungsprogamm Teil eines Wasch- und Trocknungsprogamms ist, einer Abschätzung des Wassergehalts in der Wäsche (18) am Beginn eines Trocknungsprogamms auf der Grundlage des Wäschegewichtsunterschiedes zwischen dem Wäschetrockengewicht und dem Wäschenassgewicht am Ende des Waschprogramms,
    - der Menge oder dem Gewicht der zu trocknenden Wäsche (18),
    - dem gegenwärtigen Feuchtigkeitsgrad (H) der Wäsche,
    - der Temperatur (Ti, To) der Trocknungsluft (F),
    - der Umgebungstemperatur,
    - der Innentemperatur des Trockners und
    - der Dauer seit dem Start des Trocknens.
  11. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Temperatursensor, der dafür eingerichtet ist, die Kühlmitteltemperatur (Tr) der Wärmepumpenanlage (44) zu erfassen, an einer der folgenden Position der Wärmepumpenanlage angeordnet ist:
    - einem Auslass des ersten Wärmetauschers (32) zum Erfassen der Kühlmitteltemperatur (Tr),
    - einem Auslass des Verdichters (36) zum Erfassen der Kühlmitteltemperatur,
    - dem Verdichter (36) zum Erfassen der Verdichtertemperatur,
    - dem zweiten Wärmetauscher (34) zum Erfassen der Kühlmitteltemperatur oder
    - einer Ausdehnungseinrichtung (38), die zwischen dem zweiten und dem ersten Wärmetauscher angeordnet ist, zum Erfassen der Kühlmitteltemperatur.
  12. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Trockner (2) umgesetzt ist durch einen Waschtrockner, der wenigstens ein Waschprogramm bereitstellt,
    wobei eine Wanne in dem Gehäuse (4) angeordnet ist und die Trommel (16) in der Wanne angeordnet ist,
    wobei der wenigstens eine Auslass (24) der Trommel wenigstens ein Auslass der Wanne ist oder der wenigstens eine Einlass (22) der Trommel wenigstens ein Einlass der Wanne ist oder der wenigstens eine Auslass der Trommel wenigstens ein Auslass der Wanne ist und der wenigstens eine Einlass der Trommel wenigstens ein Einlass der Wanne ist und
    wobei das Trocknungsluftgebläse (28) durch einen oder den Motor (70) unabhängig von einem oder dem Motor (30), der die Trommel (16) antreibt, angetrieben wird.
  13. Verfahren nach einem der vorhergehenden Ansprüche,
    wobei, wenn das Trocknungsprogramm gestartet wird, das Verfahren unmittelbar am Beginn des Trocknungsprogramms eine Phase (A) des Erkennens, ob Wäsche (18) in die Trommel (16) geladen ist oder nicht, umfasst.
  14. Verfahren nach einem der vorhergehenden Ansprüche,
    wobei der Trockner (2) einen Optionswähler umfasst, der durch den Benutzer zu aktivieren ist, oder einen Programmwähler (12) zum Wählen eines Trocknungsprogramms zum Trocknen von Seidenwäsche oder zum Trocknen einer Wäscheladung von höchstens oder weniger als 2 kg oder 1 kg umfasst, wobei, wenn der Benutzer eine solche Option oder ein solches Programm gewählt hat, die Wäsche nach einem der vorhergehenden Ansprüche getrocknet wird.
EP15178434.5A 2015-07-27 2015-07-27 Verfahren zur anpassung von betriebsparametern beim trocknen in einem wärmepumpentrockner Active EP3124680B1 (de)

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KR20200075538A (ko) * 2018-12-18 2020-06-26 엘지전자 주식회사 건조기의 제어방법
CN109629199A (zh) * 2019-01-07 2019-04-16 青岛海尔滚筒洗衣机有限公司 一种干衣方法及衣物处理设备
CN111607948B (zh) * 2019-02-22 2023-02-21 青岛海尔洗衣机有限公司 用于衣物处理设备的控制方法
DE102019207225A1 (de) * 2019-05-17 2020-11-19 BSH Hausgeräte GmbH Gerät zum Trocknen von Wäsche und Verfahren zum Betreiben einer Wärmepumpe eines solchen Geräts
CN112176679B (zh) * 2019-06-13 2022-04-19 宁波吉德电器有限公司 一种衣物处理装置及其控制方法
CN112941801B (zh) * 2019-12-10 2023-11-17 博西华电器（江苏）有限公司 衣物处理设备及操作其的方法和装置
CN111021019B (zh) * 2019-12-26 2022-12-09 青岛海尔洗衣机有限公司 干衣设备的控制方法
CN113718500A (zh) * 2020-05-25 2021-11-30 合肥海尔滚筒洗衣机有限公司 热泵式干衣设备的控制方法
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CN114016271B (zh) * 2021-11-19 2022-11-25 珠海格力电器股份有限公司 丝绸烘干的控制方法、控制装置及衣物处理设备

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