EP2927367A1 - Verfahren zum Durchführen eines Trocknungszyklus in einer Wäschebehandlungsmaschine, Wäschebehandlungsvorrichtung und elektronische Steuereinheit - Google Patents

Verfahren zum Durchführen eines Trocknungszyklus in einer Wäschebehandlungsmaschine, Wäschebehandlungsvorrichtung und elektronische Steuereinheit Download PDF

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Publication number
EP2927367A1
EP2927367A1 EP14162966.7A EP14162966A EP2927367A1 EP 2927367 A1 EP2927367 A1 EP 2927367A1 EP 14162966 A EP14162966 A EP 14162966A EP 2927367 A1 EP2927367 A1 EP 2927367A1
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EP
European Patent Office
Prior art keywords
drying
power
laundry
latent
latent power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14162966.7A
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English (en)
French (fr)
Inventor
Terenzio Girotto
Andrea Contarini
Massimo Viero
Fabio Altinier
Alain Tiwa
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Electrolux Appliances AB
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Electrolux Appliances AB
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Filing date
Publication date
Application filed by Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to EP14162966.7A priority Critical patent/EP2927367A1/de
Publication of EP2927367A1 publication Critical patent/EP2927367A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • D06F2103/24—Spin speed; Drum movements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/38—Time, e.g. duration
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • D06F2103/46—Current or voltage of the motor driving the drum
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/52—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to electric heating means, e.g. temperature 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
    • D06F2103/54—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to blowers or fans
    • 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

Definitions

  • the present invention in particular relates to a method of conducting a drying cycle in laundry treating machines, such as for example domestic laundry dryers or domestic laundry wash-dryers.
  • a respective method shall be provided which shall be easily implementable and which shall be suitable for more accurately conducting drying cycles of laundry treating machines.
  • the proposed method in particular shall also allow for automatically determining end- or stop-points of drying cycles for drying laundry.
  • a laundry treating machine and a respective electronic controller unit implementing a respective method shall be provided.
  • a method of conducting or controlling a drying cycle for drying wet laundry in a laundry treating machine or apparatus is provided.
  • the laundry treating machine may for example be a laundry dryer or a washer-dryer, both in particular implemented as household type appliances.
  • Drying cycles in respective machines are conducted with the aim of drying wet laundry present after wet washing cycles applied to laundry.
  • Respective drying cycles may be adapted to extract moisture from the wet laundry, and to automatically end in case that a defined or selected or preset residual moisture level or moisture content is reached.
  • residual moisture level in particular shall relate to the amount or relative amount of moisture, i.e. water, still present in laundry, after a washing cycle, or, in particular, after a certain duration of the drying cycle.
  • a drying cycle as such may constitute an overall drying phase of drying laundry, but may also relate to selected sections or subsections of a superior or embracing drying phase or drying program to be executed by the laundry treating machine.
  • An exemplary moisture level may for example relate to residual moisture contents suitable for or adequate for ironing the laundry after drying. Moisture levels suitable for ironing may be in the range of about 12%.
  • Another exemplary moisture level may relate to residual moisture contents suitable for or adequate for immediately putting dried laundry into a wardrobe and the like.
  • the moisture level preferably is close to 0% in order to avoid mould stains and the like.
  • the drying cycles for wet laundry have to be conducted differently, as the residual moisture content in case for ironing has to be somewhat higher than the moisture content of laundry ready to be put into the wardrobe.
  • the drying cycles are required to be stopped at adequate laundry moisture levels, which, as set out further below, will and is possible with the method proposed herein.
  • the proposed method requires that at least one operational condition of the drying cycle, in particular an end or stop condition, is controlled in or as a function of latent power corresponding to or representative of the power factually needed for evaporating residual moisture, in particular needed for evaporating a given amount of moisture, from the wet laundry.
  • the latent power either may be an exact or an approximate value or measure of the factual power needed for evaporating moisture.
  • the latent power represents an approximate value, it is desirable that the approximation accuracy is best in the region of or at the end or stop condition of the drying cycle. Examples or embodiments of such methods are given below in more detail.
  • a further advantage is that the latent power can be determined or calculated from operational or operating parameters of the laundry treating machine. Such determination and/or calculation can be carried out with reduced effort and complexity as compared to known techniques. In particular, comparative expensive moisture sensors can be dispensed with.
  • the accuracy of stopping or halting the drying cycle at given moisture levels of the laundry can be greatly improved as compared to known solutions, in particular solution using only a measure of electromechanical effort to rotate the laundry drum.
  • One particular advantage of the proposed method is that it is possible to automatically stop the drying cycle at the desired moisture level, in particular without extra or additional user interaction.
  • the latent power may be used for controlling, in particular automatically controlling, a stop or halt condition of the drying cycle in which drying of the laundry is stopped or halted.
  • the stop condition may for example be an end-point or intermediate end-point of a drying program executed by the laundry drying machine.
  • a drying process or program may comprise several drying phases or drying cycles, each of which may be controlled according to the proposed method.
  • the drying cycle can be stopped if a preset or user selected moisture level is reached.
  • Preset moisture levels may for example be fixed in operating programs selectable by the user.
  • the selection of desired moisture levels by the user may also be carried out according to a user input via a user interface.
  • post-drying processes or procedures occurring after stopping the drying cycle of the laundry treating machine may be considered in controlling the drying cycle. If for example, it is known that laundry will remain in a drying chamber of the laundry treating machine for a certain period of time after stopping the drying cycle, and the moisture level of laundry shall still be suitable for ironing, the drying cycle could be stopped at a somewhat higher moisture level taking into account the post-drying processes.
  • the method could in a variant be adapted to pause the drying cycle for a certain period of time and resume drying at a later point of time in order to obtain the desired moisture level at the preset future point of time.
  • the method may comprise a step or function of extrapolating the moisture level in order to be able to determine intermediate waiting or idle times.
  • a respective function may also be used to determine and to indicate to a user the residual time until the desired moisture level is reached, i.e. the time remaining up to the end of the drying cycle.
  • the latent power and/or a difference between the latent power and a latent power threshold or a time course thereof can be displayed, in particular to at least indicate the progress of drying.
  • the latent power is calculated from at least one operational parameter and/or operating parameter of the laundry treating machine.
  • Operational parameters in particular shall relate to fixed parameters influencing or relevant or affecting operation of the machine, in particular the drying cycle.
  • Operating parameters in particular shall relate to parameters that may vary or change during operation of the machine, and which influence, are relevant, affect or are representative of certain operational states of the laundry treating machine. Variations or changes in the operating parameters may be caused or affected by operation of the machine itself.
  • the operational and/or operating parameter/s may be selected from the group as set out below. Note that at least one of the parameters may be used.
  • laundry dryers use air as a process medium which is passed through laundry, contained in a drying chamber in most cases implemented as a drying drum.
  • moisture contained in the laundry is extracted and discharged via the process medium or process air.
  • hot or heated and dry air is applied to laundry in the drying chamber. The air takes up moisture and exits the drying chamber with higher humidity and lower temperature as compared to the input.
  • the mentioned temperatures i.e. a process air temperature at a dryer input and a process air temperature at a dryer output may be used as parameters as indicated mentioned above.
  • the temperatures may be jointly used, or they may be used independently, in particular as single parameters.
  • dryer input and dryer output in particular shall relate to a process medium input and output, respectively, of a drying unit or a dryer module, in particular a drying chamber, of the laundry treating machine.
  • the motor power or drying power consumption may gradually decrease in analogy to the moisture content of laundry.
  • the fact that the motor power and/or drying power consumption decreases and enters or approaches a plateau may be indicative of the fact that laundry has reached a minimum or comparative low moisture content, which in turn may be used as a stop condition for the drying cycle.
  • Other parameters that may be considered are temperature, heat and/or power transfer characteristics of the dryer, or in general respective characteristics of a dryer unit of the laundry treating machine. The mentioned characteristics may vary between different dryer types. Thus adequate consideration thereof may be beneficial for the desired drying result.
  • a similar parameter that may be used, and which may also vary from dryer to dryer, relates to the power loss or power losses of the dryer or a respective dryer unit.
  • Parameters relating to the flow of drying medium, in particular drying or process air may be related to the power transfer and power transfer characteristics of the drying airflow.
  • drying drum speed may be the drying drum speed, the drying drum torque, the speed of a fan for circulating drying air, structural data of laundry drying components of the laundry treating machine, in particular such as geometry, used materials and others.
  • the latent power may be calculated on operating and/or operational parameters of a drying drum module of the laundry treating machine.
  • the operating and/or operational parameter may be at least one of power transfer and power transfer characteristics of the drying airflow, in particular a process air temperature at an input of a drying drum, a process air temperature at the drying drum output, a flow rate of drying air through the drying drum, the power consumption of a drying drum driving motor, thermal transient contributions of the drying drum module, power losses in or at the drying drum module, structural data of laundry drying components of the laundry treating machine, such as geometry and used materials.
  • the proposed formula (1) has been found to be appropriate in end or final phases of a drying cycle. Based on the formula (1), the latent power LP can at least be approximated and the drying cycle can be stopped or halted at the desired laundry moisture level.
  • the first group of weighting factors or coefficients may be experimentally calibrated and once calibrated, may be stored in a memory of the laundry treating machine for continued use.
  • the other parameters T in , T out , ⁇ and ⁇ , needed for calculation, may be determined by sensors or directly from the machine operational data.
  • the formula (1) given above is based on the more general fact that the latent power may be determined or calculated based on data related to the drying drum module as a function of power contributions related to process air (P AIR ), driving motor(s) (P MOTOR ), heat transfer characteristics, in particular thermal transient contributions of the system (P SYS-TRANS ), and power loss (P LOSS ).
  • P AIR process air
  • P MOTOR driving motor(s)
  • P SYS-TRANS thermal transient contributions of the system
  • P LOSS power loss
  • the contribution of the air P AIR may depend on the input and output temperatures at the drying drum inlet and outlet, respectively, and on the drying air flow rate.
  • the power losses P LOSS may be related or dependent on temperatures of the drying air and environment.
  • the latent power may be determined or estimated as a function of the above mentioned contributions, i.e. LP ⁇ func (P AIR , P MOTOR , P SYS-TRANS , P LOSS ).
  • the latent power may be calculated or determined based on operating and/or operational parameters of a heating or heat exchanging module of the laundry treating machine. This requires that the laundry treating machine comprises a heating module for heating process air and/or a heat exchanging module for heating and/or drying/condensing process air.
  • the proposed method may be applied to laundry treating machines either comprising conventional heating elements for drying process air and/or comprising a heat exchanging modules, such as heat pump modules, involved in laundry drying.
  • the operating and/or operational parameter may be at least one of a power transfer and transfer characteristic of the drying airflow, an input power of a heating element for heating drying air, an input power of a heat exchanger, in particular for heating and/or drying air, power losses in or at the heating module or heat exchanging module, an air temperature at an input of the heating module or heat exchanging module, a process air temperature at an input and/or output of the heating or heat exchanging module, speed and/or power consumption of a drying air fan, thermal transient contributions of the heating or heat exchanging module, power losses in or at the heating or heat exchanging module, structural data of the laundry drying components of the laundry treating machine, in particular such as geometry, used materials and the like.
  • any of the mentioned parameters and combinations thereof may be used in determining or calculating the latent power.
  • the calculation of the latent power may be enhanced by using an appropriate set of parameters.
  • the latent power in an end phase of a drying cycle may be approximated according to the following formula: LP ⁇ K 4 ⁇ T in + K 5 ⁇ T out + K 6 ⁇ P DRY_POWER_IN
  • LP is the latent power.
  • T in is the temperature of drying air entering the heating or heat exchanging module.
  • T out is the temperature of drying air leaving the heating or heat exchanging module.
  • P DRY_POWER_IN is either related to the power consumption of a heater of the heating module or to the power consumption of a compressor of the heat exchanging module.
  • K 4 , K 5 and K 6 represent a second group of weighting factors or coefficients.
  • the above formula (2) has been found to be adequate for controlling in particular the end points or end sections of a drying cycle in case that operational and operating data from a heating module or heat exchanging module are used.
  • the second group of weighting factors may be determined experimentally, and, if the case may be, may be stored in an electronic controller related memory of the laundry treating machine.
  • the proposed formulae (1) and (2) describe comparatively simple linear combinations of respective factors, and can easily be calculated from the known weighting factors and operational and operating parameters.
  • the operational and operating parameters may be measured or determined via suitable sensors, for example.
  • a comparatively simple yet accurate and effective way of determining the latent power on the basis of parameters relating to a heating or heat exchanging module can be implemented.
  • the first and second groups of weighting factors may in embodiments be experimentally calibrated. Calibration of the weighting factors may be conducted once or may be carried out repeatedly, in particular prior and/or during a drying cycle.
  • the weighting factors may be stored in a memory related to an electronic controller unit of the laundry treating machine. The stored weighting factors may be used for subsequent calculations of the latent power and/or for cross-checking or verifying new calibrations.
  • the latent power threshold may be related to the residual moisture content of laundry. As an example and as already indicated above, the latent power threshold may relate to moisture levels adequate for ironing or for putting laundry immediately into a wardrobe without further drying.
  • the threshold may be preset by the laundry treating machine, in particular in accordance with a fixed program, or it may be based on a user input on a user interface.
  • the latent power threshold is defined or calculated prior to or during the drying cycle.
  • the latent power threshold may be updated or recalculated during a drying operation.
  • working parameters of a heater used for drying and/or heating process air can be used, such as for example the power consumption of the heater, the heating temperature, the drying air temperature and the like.
  • the amount of condensed moisture, a machine alarm condition, the slope of a graph representing the time course of the latent power during a drying cycle may also be used as parameters for determining, calculating, adapting and/or updating the latent power threshold.
  • the parameters related to determining, calculating, adapting and/or updating the latent power threshold may be used individually or in arbitrary combinations, in particular in order to obtain adequate latent power thresholds which may lead to enhanced drying results.
  • the proposed method may comprise the steps of:
  • the proposed method steps are comparatively simple and it can be seen that the drying operation of the laundry treating machine can be accurately controlled.
  • step c) the latent power threshold is calculated from operational and/or operating parameters of the laundry treating machine. At least step c) may be repeated several times during a drying cycle in order to update the latent power threshold.
  • the latent power threshold As to the calculation of the latent power threshold, further reference is made to the description above.
  • an electronic controller unit is proposed which is adapted to control a laundry treating machine, such as for example as proposed beforehand.
  • the electronic controller unit comprises a memory in which a program is stored, which is configured to carry out in a laundry treating apparatus a method as described above in particular including all embodiments and variants as given above and further above.
  • FIG. 1 shows a schematic representation of a drying circuit of a laundry treating machine 1.
  • the laundry treating machine 1 in particular may be, but shall not be restricted to, a domestic laundry tumble dryer appliance for drying laundry and cloth.
  • the term “appliance” will be used instead of "laundry treating machine 1", however this shall not restrict the scope of protection.
  • the drum module 2 comprises a driving motor 5 adapted and configured to drive a drying drum 6 in which wet laundry 7 to be dried is accommodated.
  • the heat exchanging module comprises a fan 10 for generating an airflow of process air, which airflow is indicated by arrows in FIG. 1 .
  • the appliance For drying laundry 7, the appliance is operated as follows: During a drying cycle, the driving motor 5 rotates the drying drum 6 in which the laundry 7 is accommodated.
  • the fan 10 of the heat exchanger module 3 in combination with adequate ducting and air guides (not shown) generate an airflow of process air through the drying drum 6.
  • the humid process air is then passed to and through the condenser 8, i.e. a cold exchanger, where humidity is extracted from the process air by condensation. After that, dry and cooled down process air reenters the heater and is heated up again to recirculate through the drying drum 6.
  • the condenser 8 i.e. a cold exchanger
  • the present invention may apply to appliances in which an evaporator and condenser of a heat pump system are used as the cold and hot exchangers, respectively.
  • the invention may also be applied to appliances in which an air to air exchanger and an electric heating element may be used as the cold and hot exchangers, respectively.
  • the electronic control unit 4 as shown in FIG. 1 is adapted and configured to control operation of the appliance 1, and to acquire a plurality of functional, i.e. operational and operating, parameters.
  • Exemplary parameters are the temperature T in of the process air at the drying drum input, i.e. an input temperature T in , the temperature T out of the process air at the drying drum output, i.e. an output temperature T out , a rotational speed ⁇ of the drying drum 6, a torque ⁇ of the drying drum 6, and power consumption P x of selected components and subunits, in particular the power consumption of the heater 11, the fan 10 and the driving motor 5.
  • the water quantity extracted from the laundry per second is commonly known as the drying rate (DR).
  • the time course of the drying rate (DR) is visualized in FIG. 2 (solid line).
  • FIG. 2 also shows the moisture content of the laundry during a drying cycle (dashed line).
  • the drying rate has a typical course in which in particular four different phases A to D can be identified or defined (see FIG. 2 ):
  • the drying rate DR is significantly lower than its maximum which in the exemplary embodiment is reached in the second phase B.
  • the trend of the drying rate DR may be used for automatically stopping or halting the drying cycle at a desired moisture level.
  • the drying cycle can be stopped or halted as soon as the drying rate DR drops below a convenient or predefined threshold.
  • the present invention in particular provides a procedure for estimating the latent power LP in the dryer and establishes conditions, such as a threshold, for ending or halting, in particular in an automated way, the drying cycle.
  • the latent power LP can be estimated or approximated by computing a flow energy balance that considers all, or at least a selection of relevant energy flows across a closed volume.
  • the drum module 2 in particular receives the hot and dry air flow related to the process gas, and the mechanical power from the driving motor 5.
  • the efflux from the drum module 2 in particular may comprise the exiting humid air flow and a heating loss towards the environment. Inside the drum module 2 water is evaporated from the laundry 7.
  • K 4 to K 6 are weighting or calibration factors for the parameters as mentioned above.
  • the weighting factors K 1 , K 2 , K 3 , K 4 , K 5 , and K 6 may be experimentally calibrated. They may be dependent on the structure and/or operation of the appliance 1, in particular the drum module 2 and/or heat exchanger module 3. As an example, the mass flow of the process air, corresponding or relating to the speed of the fan 10, as well as the drying circuit geometry may affect K 1 to K 6 . It shall be noted that K 1 to K 6 , in more detail at least one of the weighting factors K 1 to K 6 , may vary or change during time and may be adapted or corrected accordingly.
  • the values of the weighting factors K 1 to K 6 can be stored in a memory of the electronic control unit 4 in order to be available for determining, calculating and/or approximating the latent power LP during subsequent drying cycles.
  • the electronic control unit 4 can determine an end or halt condition in which the drying cycle has to be stopped or halted. For determining or identifying the end or halt condition, a latent power threshold LP THR may be used.
  • the latent power threshold LP THR may be stored in the memory of the electronic control unit 4.
  • the comparison between the actual latent power LP and the determined threshold LP THR may be activated only after the actual latent power has been found to be greater than the determined threshold LP THR since the beginning of the drying process, or after a predetermined time from said beginning of the drying process, or after a parameter indicating the status of the laundry drum within the drum 6 has reached or passed a predetermined value.
  • the latent power LP is calculated from the parameters acquired in the preceding step.
  • the latent power LP is calculated according to formula (6).
  • the weighting factors K 4 , K 5 , and K 6 are retrieved from a memory of the electronic control unit 4, where they had been stored beforehand.
  • the weighting factors K 4 , K 5 , and K 6 may be determined as set out further above.
  • the algorithm as described in connection with FIG. 3 is representative for a heat pump based heat exchange module 3.
  • a similar algorithm may be set up for a heater based heat exchange module, in particular by using the adequate formula for calculating the latent power LP.
  • the algorithm as shown and described in connection with FIG. 3 may be extended or broadened and in general is not restricted to the steps and actions as described further above.
  • a modified algorithm may provide recalculating the latent power threshold during the drying cycle, in particular during the drying loop.
  • other, additional or alternative parameters, and formulas may be used for calculating, determining or approximating the latent power LP. Further modifications are conceivable, in particular according to any embodiment and variant mentioned in the description above and further above.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP14162966.7A 2014-03-31 2014-03-31 Verfahren zum Durchführen eines Trocknungszyklus in einer Wäschebehandlungsmaschine, Wäschebehandlungsvorrichtung und elektronische Steuereinheit Withdrawn EP2927367A1 (de)

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EP14162966.7A EP2927367A1 (de) 2014-03-31 2014-03-31 Verfahren zum Durchführen eines Trocknungszyklus in einer Wäschebehandlungsmaschine, Wäschebehandlungsvorrichtung und elektronische Steuereinheit

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EP14162966.7A EP2927367A1 (de) 2014-03-31 2014-03-31 Verfahren zum Durchführen eines Trocknungszyklus in einer Wäschebehandlungsmaschine, Wäschebehandlungsvorrichtung und elektronische Steuereinheit

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107724023A (zh) * 2016-08-12 2018-02-23 青岛海尔滚筒洗衣机有限公司 一种用于洗干一体机的烘干方法及洗干一体机
CN113609660A (zh) * 2021-07-27 2021-11-05 江苏科技大学 一种预测衣物在干衣机内热质传递规律的数值模拟方法

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CN107724023B (zh) * 2016-08-12 2021-06-29 重庆海尔滚筒洗衣机有限公司 一种用于洗干一体机的烘干方法及洗干一体机
CN113609660A (zh) * 2021-07-27 2021-11-05 江苏科技大学 一种预测衣物在干衣机内热质传递规律的数值模拟方法
CN113609660B (zh) * 2021-07-27 2024-03-15 江苏科技大学 一种预测衣物在干衣机内热质传递规律的数值模拟方法

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