EP3425109A1 - Procédé d'utilisation d'un sèche-linge avec pompe à chaleur ou d'une machine à laver comportant une pompe à chaleur ayant une fonction de séchage - Google Patents

Procédé d'utilisation d'un sèche-linge avec pompe à chaleur ou d'une machine à laver comportant une pompe à chaleur ayant une fonction de séchage Download PDF

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Publication number
EP3425109A1
EP3425109A1 EP17180174.9A EP17180174A EP3425109A1 EP 3425109 A1 EP3425109 A1 EP 3425109A1 EP 17180174 A EP17180174 A EP 17180174A EP 3425109 A1 EP3425109 A1 EP 3425109A1
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EP
European Patent Office
Prior art keywords
laundry
drying
energy
compressor
driving
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.)
Granted
Application number
EP17180174.9A
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German (de)
English (en)
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EP3425109B1 (fr
Inventor
Ornella BRANDOLISIO
Lorenzo Corso
Fabio GARZENA
Roberto Ragogna
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Electrolux Appliances AB
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Electrolux Appliances AB
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Publication date
Application filed by Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to EP17180174.9A priority Critical patent/EP3425109B1/fr
Priority to PL17180174.9T priority patent/PL3425109T3/pl
Priority to AU2018203683A priority patent/AU2018203683B2/en
Priority to CN201810718363.7A priority patent/CN109208290B/zh
Publication of EP3425109A1 publication Critical patent/EP3425109A1/fr
Application granted granted Critical
Publication of EP3425109B1 publication Critical patent/EP3425109B1/fr
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • 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
    • 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
    • D06F2103/08—Humidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/12—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
    • D06F2103/32—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
    • D06F2103/38—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
    • D06F2103/50—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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity

Definitions

  • the present invention relates to a method of operating a laundry drying machine, such as a heat pump laundry dryer or a heat pump washing machine having drying function.
  • this invention relates to a method of operating a laundry drying machine having drying function in order to carry out a drying cycle on a laundry loaded by a user.
  • the duration time of the drying phase is a function of the clothes textile properties: synthetic clothes dry faster than cotton clothes; lighter and thinner ones are faster at drying than stiffer and thicker ones; the dimension and shape also affect the drying.
  • moisture contained in the laundry load is measured or estimated for determining when such drying cycle is to be ended because the laundry load has reached a desired level of dryness.
  • the laundry moisture is generally determined, or estimated, by means of a conductimetric sensor wherein two or more spaced apart electrodes, when touched by wet laundry, generate a signal which is representative of the laundry moisture.
  • a purpose of the present invention is to provide a method of operating a laundry drying machine, such as a heat pump laundry dryer or a heat pump washing machine having drying function, which offers a solution to the drawbacks described above.
  • Another purpose of the present invention is to provide a method of operating a laundry drying machine, such as a heat pump laundry dryer or a heat pump washing machine having drying function, which reduces the quantity of over-dried clothes and randomly wet clothes after the drying phase.
  • a laundry drying machine such as a heat pump laundry dryer or a heat pump washing machine having drying function
  • a further purpose of the present invention is to provide a method of operating a laundry drying machine, such as a heat pump laundry dryer or a heat pump washing machine having drying function, that reduces the quantity or dimensions of wet zones on a large sheet (e.g. bed linen) during the drying, creating an evenness in the moisture distribution throughout the entire sheet.
  • a laundry drying machine such as a heat pump laundry dryer or a heat pump washing machine having drying function
  • a further purpose of the present invention is to provide a method of operating a laundry drying machine, such as a heat pump laundry dryer or a heat pump washing machine having drying function that reduces the formation of creases and wrinkles in the clothes during the drying phase.
  • a laundry drying machine such as a heat pump laundry dryer or a heat pump washing machine having drying function that reduces the formation of creases and wrinkles in the clothes during the drying phase.
  • the air flow through the drum of a heat pump tumble dryer, the clothes and the heat exchangers (evaporator and condenser) is ideally in a closed loop.
  • Hot dry air from the condenser of the heat pump system is preferably pumped into the inlet of the drum of the tumble dryer; the hot air absorbs moisture from the wet clothes as the drum rotates.
  • the humid air is discharged at the outlet of the drum and directed towards the evaporator of the heat pump system, where the air is cooled and dehumidified by the evaporator, which in turn takes heat from the humid air, thus condensing the water vapor in the humid air into liquid and this liquid is exhausted from the air flow circuit.
  • the dehumidified air is then passed across the condenser of the heat pump system where it is re-heated and sent back into the drum, thereby continuing the cycle over and over during the drying phase.
  • the compressor is driven in a way that advantageously provides for a distribution of moisture among the laundry mass during a drying cycle such that, at the end of that cycle, said mass results to be uniformly dried.
  • the present invention takes advantage of this phenomenon during the drying process, alternating between time periods with compressor switched on and ones with compressor switched off, and/or between time periods wherein the compressor operates at different levels of energy, in order to maximize the drying evenness.
  • the compressor In at least a first drying phase, the compressor is left on, till a desired temperature or time or laundry moisture level or a combination of at least two of said conditions according to the program selected is achieved.
  • subsequent drying phases preferably a second drying phase and a third drying phase
  • the "on/off" or "high/low supplied energy" alternating of the compressor is used, after which said program may move to a laundry cooling phase.
  • phase it is meant the period assigned to a particular section or a step of the drying process.
  • process or “drying process” it is meant the total period from start of operating the machine to the end.
  • drying treatment process it is meant the overall process, comprising both the drying process and possible other optional end phases, such as a cooling phase or an anticrease phase.
  • the compressor driving management can be linked to the laundry load dryness level.
  • the object of the present invention is implementing 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.
  • a laundry drying machine such as a heat pump laundry dryer or a heat pump washing machine having drying function
  • the laundry drying machine implementing such method comprises:
  • the method of the invention comprises the following steps:
  • the second driving sequence may preferably provide for driving the compressor intermittently for a first time period in correspondence of a first level of energy, for a second time period in correspondence of a second level of energy, for a third time period in correspondence of a third level of energy, for a fourth time period in correspondence of a fourth level of energy.
  • the energy consumption may be modulated depending on the time duration of the respective time period, maximizing the energy saving.
  • a time period corresponding to the lower levels of energy may be substantially equal to or longer than the time period corresponding to the upper levels of energy.
  • a time period corresponding to the upper levels of energy may be substantially longer than a time period corresponding to the lower levels of energy.
  • the first level and the third level may be substantially equal to each other, and the second level and the fourth level may be substantially equal to each other.
  • the second driving sequence is followed by a third driving sequence in a third portion of the drying cycle different from the first portion and the second portion, wherein the compressor is driven intermittently between a lower level of energy and an upper level of energy, the time periods corresponding to lower levels of energy of the third driving sequence being longer than the time periods corresponding to lower levels of energy of the second driving sequence.
  • the second driving sequence may be selected among a plurality of available driving sequences on the basis of one or more of the parameters of the first list.
  • condition of end of drying process to be controlled during the drying process, may be defined depending on at least one parameter of the following second list:
  • the condition of end of drying process may be in fact a function of one or more of the parameters of the second list; for example: the function could provide that, if the laundry moisture value is equal or below a threshold value, the elapsed time shall be detected and, if a value has been reached, the drying process shall end.
  • the step of setting the at least one condition of end of drying process may preferably occur before starting to drive the compressor according to one of the first or second driving sequences.
  • a final laundry treating step may be performed.
  • the final laundry treating step may comprise a cooling phase, wherein laundry may be moved within the laundry treatment chamber and/or a cooling air flow may be provided to said laundry load.
  • the lower level of energy may be obtained by switching OFF the compressor, and the upper level of energy may be obtained by switching ON the compressor.
  • the compressor may remain always switched ON.
  • the invention also relates to a laundry drying machine having a control unit programmed for carrying out the method of the invention.
  • the reference numeral 10 generally designates a laundry drying machine.
  • the laundry drying machine comprises: a control unit 11 adapted to supply energy to a compressor 17 during at least a first drying phase P1 and a second drying phase P2, a laundry treatment chamber 12, a process air circuit 13, for circulating a process air A, a heat pump system 14 comprising a first and second heat exchangers 16a,16b in thermal communication with the process air A.
  • Said first heat exchanger (evaporator) 16a takes heat and therefore cools down said process air A and said second heat exchanger (condenser) 16b gives heat to the process air A.
  • a refrigerant loop 15 circulates a refrigerant fluid R within said heat pump system 14.
  • a compressor 17 increases the pressure and the corresponding saturation temperature (boiling point) of the refrigerant vapor to a level of pressure at which the refrigerant R can condense by rejecting its heat through said condenser.
  • the heat exchanger (evaporator) 16a receives heat, therefore cooling down said process air A, while said second heat exchanger (condenser) 16b gives heat to the process air A.
  • the compressor is respectively of a variable speed type or of a fixed speed type.
  • At least a first drying phase P1 and a second drying phase P2 each comprise a sequence type.
  • sequence type or “driving sequence” it is meant a series of duty cycles which are performed in a phase P1, P2, P3 or P4.
  • sequence P1, P2, P3 or P4 For example, there could be a constant duty cycle series or a variable duty cycle series.
  • duty cycle it is meant the percentage of the duration of time or time period in which said compressor 17 is on (or at a higher energy level) to the cycle time.
  • cycle time it is meant the duration of time or time period in which said compressor 17 is on (or at a higher energy level) added to the duration of time when said compressor 17 is off (or at a lower energy level) during a single cycle.
  • cycle it is meant a single time duration when said compressor 17 is off (or at a lower energy level) followed by a single time duration or time period when said compressor 17 is on (or at a higher energy level).
  • drying cycle is used in the present specification as a synonym of “drying process”, as defined above.
  • duty cycle time compressor 17 on / cycle time * 100 % .
  • At least said second drying phase P2 provides for driving the compressor 17 intermittently between a lower level of energy and an upper level of energy.
  • said heat pump system 14 in addition, comprises an expansion valve 18 and/or compressor 17 cooling fan CF.
  • Said process air circuit 13 is provided by process air conduit 19 connected to the heat exchangers 16a, 16b and a drum 20 in the laundry treatment chamber 12 in such a way that the process air flows through said drum 20, the laundry load L and said heat exchangers 16a,16b is in a closed loop.
  • Said drum 20 is preferably rotated by a drum motor M1 about the axis of its opening and a drying fan DF actuated by a motor (preferably M1).
  • a drum motor M1 about the axis of its opening
  • a drying fan DF actuated by a motor (preferably M1).
  • both said drum and said drying fan DF may be operated by the same motor M1.
  • the laundry drying machine uses the method explained below to even the moisture of said laundry load L such that, at the end of the drying process each cloth of the laundry load L comes out having a moisture level comparable to the others, irrelevant of their size, texture, weight or other properties that can affect the rate at which they dry.
  • moisture level it is meant the percentage of water present in the laundry load L in said laundry treatment chamber 12 while with humidity level it is meant the percentage of water vapor present in the process air A.
  • control unit 11 is adapted to drive said fixed compressor 17, according to said first drying phase P1.
  • the internal of said laundry treatment chamber 12 is equipped with a moisture and/or humidity sensing device, able to detect or estimating the laundry moisture or the humidity of drying air leaving the drum.
  • the sequence type of said first drying phase P1 and at least the lower and upper level of energy of a second drying phase may be defined, on the basis of these parameters: laundry load amount detection, environmental temperature and/or humidity of the environment where the laundry machine is placed, moisture content of laundry load, temperature of laundry load, temperature of process air, laundry treatment process time (i.e. drying process time), a preset value of energy consumption admitted for the machine operation and the program selected.
  • laundry load amount detection environmental temperature and/or humidity of the environment where the laundry machine is placed
  • moisture content of laundry load i.e. drying process air
  • laundry treatment process time i.e. drying process time
  • a preset value of energy consumption admitted for the machine operation i.e. drying process time
  • the end condition(s) of at least said first drying phase P1 is(are) imposed, selected among a plurality of possible end conditions (time period, moisture level, humidity level, temperature, etc).
  • the whole second drying phase P2 may be defined basing on the above listed parameters.
  • a first time limit t1 is set as the end condition, i.e. at the end of such time limit t1 said first drying phase P1 ends.
  • the laundry load moisture level drops slightly with time because the whole machine has to heat up and the heat pump has to end its transitory period.
  • Said second drying phase P2 starts at the end of said first drying phase P1.
  • the sequence type of said second drying phase P2 is selected based on the time limit t1 of the first drying phase P1 and the program selected.
  • a first level H1 of laundry moisture is set as the end condition of said second drying phase P2.
  • said second drying phase P2 has a sequence type comprising a series of constant duty cycles of 50% with constant time period.
  • time period it is meant the duration of time for which said compressor 17 is off (or at a lower energy level) or duration of time for which said compressor is on (or at a higher energy level) in a single cycle.
  • time period it is meant the duration of time for which said compressor 17 is off (or at a lower energy level) or duration of time for which said compressor is on (or at a higher energy level) in a single cycle.
  • the third drying phase P3 has also an end condition; preferably, a second laundry moisture level H2, lower than that of said first laundry moisture level H1, is selected as the end condition for the third drying phase P3.
  • said third drying phase P3 has a sequence type comprising a series of constant duty cycles of 50% with variable time periods.
  • said compressor is switched off for a period of 2 minutes and then switched on for another 2 minutes.
  • said compressor is switched off for 5 minutes and switched on for another 5 minutes and then the first and second cycle time repeat.
  • the duty cycle is constant; however, the cycle times are different.
  • the first and second cycle times repeat till the second laundry moisture level H2 for said third drying phase P3 is obtained.
  • Said first, second and third drying phases have preferably same upper energy level and same lower energy level.
  • a fourth phase P4 for example, a laundry cooling phase, starts.
  • a second time limit t2 may be set as the end condition of said fourth phase.
  • time limit it is meant a duration of time set for a particular entire phase (eg. P1, P2, P3, P4).
  • the temperature in the laundry treatment chamber 12 reduces gradually, till the time limit is reached.
  • the drying process comes to an end when the predetermined end condition of the drying process is met.
  • the desired laundry moisture level is attained.
  • An end condition of the drying process is constantly monitored during the whole drying process, because it could be met in any instant of time.
  • a variable speed compressor is provided and it is driven between two energy levels of different amount.
  • Said compressor 17 is not completely switched off, but regulated by increasing or reducing the amount of energy supplied to it. This is done, for example, by regulating the speed of the compressor 17.
  • a variable speed process fan may be also provided, and preferably it works independently from the compressor 17, e.g. when the speed of the compressor 17 is lowered, the fan could be operated in order to lower the temperature inside the chamber 12, or it could be switched off, depending on the requirements.
  • the process fan is operated at a first speed S1, during the first drying phase P101, at a second speed S2, during the second drying phase P102, at a third speed S3, during the third drying phase P103, at a fourth speed S4, during the fourth phase P104.
  • the highest speed is the fourth one S4, i.e. while the compressor is at its lowest energy level and a decrease in temperature can be obtained, and - except for the speed S0 corresponding to the first low energy level A111, which lasts much less than the overall drying phase P101 - the lowest speed is the first one S1, when the compressor is supplied with the higher energy level of phase P101.
  • the second speed S2 is higher than the third speed S3.
  • said first drying phase P101 is dependent on the load moisture, the program selected and the environmental temperature.
  • a first sequence type, at least one condition that ends said first drying phase P101 and at least one end condition for the drying process are selected based on these same parameters.
  • Said at least one end condition for the drying process is selected from a plurality of available end of process conditions.
  • drying process end conditions may be defined depending on at least one of the following:
  • a first temperature T101 of process air leaving the drum is set as the end condition for said first drying phase P101.
  • Said second drying phase P102 starts when the temperature T101 is attained.
  • Said second drying phase P102 is selected based on the said first temperature T101 and the program selected according to said drying phase P101.
  • a second sequence type and at least one condition that, once met, causes the end of said second drying phase P102 are selected.
  • Said second sequence type preferably, has a series of constant duty cycles of 50% and a constant time period throughout the second drying phase P102.
  • the speed of said compressor 17 is reduced such that the first upper energy level A112 of said first drying phase P101 falls to a second lower energy level A121.
  • Said second lower energy level A121 is higher than the first lower energy level A111.
  • This second lower energy level A121 is maintained for a time period preferably of 5 minutes and then said compressor 17 speed is increased.
  • the energy level of said compressor 17 moves to a second upper energy level A122 higher than that of first upper energy level A112.
  • the temperature of drying air leaving the drum slightly increases, whilst the laundry moisture level reduces.
  • said second drying phase P102 comes to an end when at least a predetermined first laundry moisture level H101 and a predetermined time limit t101 for said second drying phase P102 are obtained and said third drying phase P103 begins.
  • a third sequence type of said third drying phase P103 is selected based on the first laundry moisture level H101 and the time limit t101 and laundry load weight at end of second drying phase P102.
  • At least one condition that ends said third drying phase P103 is selected among a plurality of possible end conditions.
  • a second laundry moisture level H102 is set as the end condition to be fulfilled for said third drying phase P103 to end.
  • said third path has a third sequence type with series of variable duty cycles.
  • the third lower energy level and third upper energy level are lower than the second lower energy level and the second upper energy level respectively.
  • the third lower energy level A131 corresponds to the first lower energy level A111.
  • the third upper energy level A132 corresponds to the first upper energy level A112.
  • a fourth upper energy level A134 of said third drying phase P103 corresponds to the second lower energy level A121.
  • said third drying phase P103 comes to an end when the second laundry moisture level H102, set based on the above-mentioned conditions for said third drying phase P103, is achieved.
  • a fourth phase P104 (for example, a cooling phase) is selected based on the said second laundry moisture level H102 selected according to said third drying phase P103.
  • the machine selects a fourth sequence type for said fourth phase P104 and at least one condition that ends said fourth phase P104.
  • a second temperature T102 of process air leaving the drum is set as the end condition for said fourth phase P104.
  • the temperature of process air leaving the drum reduces till the predetermined temperature T102 for said fourth phase P104 is obtained.
  • End of the drying process occurs when the at least one of the above-listed end conditions (e.g. laundry load is below a predetermined moisture level or process air leaving the drum is below a predetermined temperature imposed).
  • An optional phase may also be selected for anti-crease or anti-wrinkles.
  • the compressor speed is adjusted, preferably based on the temperature information.
  • the on/off may be managed through a hysteresis control on the process air temperature.
  • the air flow can be adjusted using variable process fan speed.
  • variable compressor speed can also be implemented on a machine with fixed compressor speed and vice versa.
  • start and end conditions on a variable compressor machine can be implemented on a machine with fixed compressor and vice versa.
  • duty cycles implemented on a variable speed compressor machine can be implemented on a fixed speed compressor machine and vice versa.
  • materials used may be any according to the requirements and the state of art.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP17180174.9A 2017-07-07 2017-07-07 Procédé d'utilisation d'un sèche-linge avec pompe à chaleur ou d'une machine à laver comportant une pompe à chaleur ayant une fonction de séchage Active EP3425109B1 (fr)

Priority Applications (4)

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EP17180174.9A EP3425109B1 (fr) 2017-07-07 2017-07-07 Procédé d'utilisation d'un sèche-linge avec pompe à chaleur ou d'une machine à laver comportant une pompe à chaleur ayant une fonction de séchage
PL17180174.9T PL3425109T3 (pl) 2017-07-07 2017-07-07 Sposób działania urządzenia do suszenia prania z pompą ciepła lub maszyny pralniczej z pompą ciepła mającą funkcję suszenia
AU2018203683A AU2018203683B2 (en) 2017-07-07 2018-05-25 Method of operating a heat pump laundry dryer or heat pump washing machine having drying function
CN201810718363.7A CN109208290B (zh) 2017-07-07 2018-07-03 操作衣物干燥机的方法和衣物干燥机

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EP17180174.9A EP3425109B1 (fr) 2017-07-07 2017-07-07 Procédé d'utilisation d'un sèche-linge avec pompe à chaleur ou d'une machine à laver comportant une pompe à chaleur ayant une fonction de séchage

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EP3533920A1 (fr) * 2018-03-02 2019-09-04 BSH Hausgeräte GmbH Sèche-linge à pompe à chaleur
CN112176679A (zh) * 2019-06-13 2021-01-05 宁波吉德电器有限公司 一种衣物处理装置及其控制方法
CN113293585A (zh) * 2020-02-21 2021-08-24 青岛海尔滚筒洗衣机有限公司 热泵系统的辅冷装置的控制方法及热泵式烘干设备
EP3904587A1 (fr) * 2020-04-29 2021-11-03 Miele & Cie. KG Procédé et unité de commande permettant de régler une température de séchage pour un appareil de séchage et appareil de séchage

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CN113062094B (zh) * 2021-02-26 2022-06-14 无锡小天鹅电器有限公司 一种烘干控制方法、装置、衣物处理设备及存储介质
CN114775254B (zh) * 2022-04-13 2024-03-12 Tcl家用电器（合肥）有限公司 干衣机的控制方法、控制装置、存储介质和干衣机

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EP2415927A2 (fr) * 2010-08-06 2012-02-08 Panasonic Corporation Appareil de chauffage/déshumidification et sèche-linge
WO2014095790A1 (fr) * 2012-12-18 2014-06-26 Electrolux Home Products Corporation N.V. Procédé pour commander un système de pompe à chaleur pour un sèche-linge et sèche-linge correspondan
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EP2811064A1 (fr) * 2013-06-03 2014-12-10 Electrolux Appliances Aktiebolag Appareil de traitement du linge avec une commande en fonction de la température
WO2015082011A1 (fr) * 2013-12-05 2015-06-11 Electrolux Appliances Aktiebolag Procédé permettant de commander un sèche-linge du type comprenant un système de pompe à chaleur, et sèche-linge correspondant

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Publication number Priority date Publication date Assignee Title
EP3533920A1 (fr) * 2018-03-02 2019-09-04 BSH Hausgeräte GmbH Sèche-linge à pompe à chaleur
CN112176679A (zh) * 2019-06-13 2021-01-05 宁波吉德电器有限公司 一种衣物处理装置及其控制方法
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
CN113293585A (zh) * 2020-02-21 2021-08-24 青岛海尔滚筒洗衣机有限公司 热泵系统的辅冷装置的控制方法及热泵式烘干设备
EP3904587A1 (fr) * 2020-04-29 2021-11-03 Miele & Cie. KG Procédé et unité de commande permettant de régler une température de séchage pour un appareil de séchage et appareil de séchage

Also Published As

Publication number Publication date
AU2018203683B2 (en) 2023-12-21
EP3425109B1 (fr) 2022-05-04
AU2018203683A1 (en) 2019-01-24
PL3425109T3 (pl) 2022-08-22
CN109208290A (zh) 2019-01-15
CN109208290B (zh) 2023-01-06

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