EP4060114A1 - Procédé de mise en uvre d'un programme de traitement pour un appareil de buanderie, dispositif de commande et appareil de buanderie - Google Patents

Procédé de mise en uvre d'un programme de traitement pour un appareil de buanderie, dispositif de commande et appareil de buanderie Download PDF

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Publication number
EP4060114A1
EP4060114A1 EP22159516.8A EP22159516A EP4060114A1 EP 4060114 A1 EP4060114 A1 EP 4060114A1 EP 22159516 A EP22159516 A EP 22159516A EP 4060114 A1 EP4060114 A1 EP 4060114A1
Authority
EP
European Patent Office
Prior art keywords
temperature
signal
switch
compressor
process air
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.)
Pending
Application number
EP22159516.8A
Other languages
German (de)
English (en)
Inventor
Marvin Habig
Patrick Schimke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP4060114A1 publication Critical patent/EP4060114A1/fr
Pending 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/26—Condition of the drying air, e.g. air humidity or 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
    • 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
    • D06F2103/28—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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/06—Recirculation of washing liquids, e.g. by pumps or diverting valves
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/52—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/63—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of air flow, e.g. blowing air during the washing process to prevent entanglement of the laundry
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/20—Parameters relating to constructional components, e.g. door sensors

Definitions

  • the invention relates to a method for carrying out a treatment program for a laundry treatment device, a control device and a laundry treatment device.
  • the object of the invention is to provide an improved method for carrying out a treatment program for a laundry treatment appliance, an improved control device and an improved laundry treatment appliance.
  • this object is achieved by a method for carrying out a treatment program for a laundry treatment appliance, a control device and a laundry treatment appliance with the features of the main claims.
  • a laundry treatment device can be understood to mean a device in which laundry, for example textiles, can be treated.
  • this can be a washer-dryer or a tumble dryer.
  • a treatment program can be understood, for example, as a drying program or a hygiene program.
  • the laundry treatment appliance When the laundry treatment appliance is in operation, the laundry can be arranged in a laundry treatment space in the drum and treated using the process air.
  • the heat pump can be understood to mean a device in which the components are functionally connected to one another in order to heat the process air flowing through.
  • the process air can first flow through an evaporator and then through a condenser.
  • a refrigerant can be or can be arranged in a refrigerant circuit of the heat pump.
  • the refrigerant can be vaporized in the evaporator using moist process air and condensed in the condenser using the dehumidified process air.
  • the compressor and a throttle can also be arranged in the refrigerant circuit.
  • the heat pump device can thus be used to take in the moist process air, for example from a laundry treatment room enclosed by the drum, to cool it and dry it, to heat it up again and to release it again.
  • the laundry treatment device includes a heating unit that can be operated electrically, for example, and can be designed to heat the process air independently of the heat pump.
  • the process air driven by the process air fan, can flow in a circuit both through the heat pump and through the heating unit and can be heated either by the heat pump or by the heating unit or by both at the same time.
  • the switching on and switching off of the heat pump and heating unit can be controlled by the control device.
  • the heated process air can then be used to heat the drum of the laundry treatment appliance and thus the laundry arranged in the drum, for example during the treatment program.
  • the heat pump can be switched off after a heating phase in which the process air is heated by both the heating unit and the heat pump, for example if a predefined target temperature in the drum or on the compressor has been reached. From a procedural point of view, it can make sense to generate the heat output of individual treatment programs exclusively via an additional electric heater.
  • the heat pump's compressor which can also be referred to as the compressor, can be damaged because the compressor can have a low heat level throughout the program when it is not in operation.
  • the refrigerant can absorb thermal energy from the process air in the heat exchangers, which can increase the enthalpy of the refrigerant and cause it to evaporate. Two different heat levels can then meet in the compressor. High enthalpy refrigerant and low enthalpy compressor. The refrigerant can release part of its thermal energy to the compressor, which can lead to condensation of the refrigerant. Since liquid refrigerant cannot be compressed, a subsequent start-up of the compressor would lead to damage and increased acoustics.
  • the heat pump is switched on again in the method presented here when a switch-on criterion that is dependent on the compressor temperature signal, such as a drop in the temperature in the compressor to a predefined temperature value, is met.
  • a switch-on criterion that is dependent on the compressor temperature signal, such as a drop in the temperature in the compressor to a predefined temperature value, is met.
  • a step of outputting the switch-off signal again can take place if a switch-off criterion dependent on the compressor temperature signal is met.
  • the heat pump can be switched off again after a predetermined period of time or when a certain temperature is reached.
  • the steps of outputting the power-on signal again and outputting the power-off signal again can be carried out repeatedly.
  • the heat pump can be switched on and off several times over the course of the treatment program.
  • the temperature of the compressor can thereby be kept at a level for the duration of the program at which condensation of the refrigerant and thus damage to the compressor can be avoided.
  • the switch-off signal can be output in the output step if the temperature signal represents a temperature corresponding to a predetermined target temperature value.
  • the switch-on signal can be output in the re-output step if the compressor temperature signal represents a temperature corresponding to a predetermined threshold temperature value, with the threshold temperature value being able to be lower than the target temperature value.
  • the heat pump can be switched off from a defined target temperature, which can also be referred to as the hot gas temperature.
  • the target temperature can be, for example, the temperature required for drying the laundry in the corresponding treatment program, for example 65°C.
  • the heating-up phase is now over and the program can only be operated with the additional electrical heating.
  • This state can be maintained until the temperature in the compressor falls below a second defined value at which condensation of the refrigerant in the compressor can be likely. If this is the case, the compressor can be activated again until the defined target temperature is reached again and the heat pump can be switched off again. This process can be repeated several times in the course of a hygiene program and advantageously ensures that the compressor always has a certain level of heat, thus preventing internal condensation.
  • the predetermined target temperature value can be at least 60°C and additionally or alternatively the threshold temperature value can be at least 40°C.
  • a treatment program can be optimally carried out at a temperature of at least 60°C.
  • the switch-off signal can be output in the re-output step if a temperature represented by the compressor temperature signal is greater by a temperature difference than a temperature represented by the temperature signal.
  • the heat pump can be switched off when the temperature in the compressor is at least 15K higher , than the temperature in the drum.
  • condensation inside the compressor can be prevented.
  • the switch-on signal can be output in the re-output step if a temperature represented by the compressor temperature signal is lower by a temperature difference than a temperature represented by the temperature signal.
  • a temperature represented by the compressor temperature signal is lower by a temperature difference than a temperature represented by the temperature signal.
  • the temperature difference can correspond, for example, to the difference which results in the switch-off signal being output again, for example a temperature difference of 15K.
  • the temperature difference can be between 10K and 20K.
  • the heat pump can be switched on again when the difference between the temperature in the compressor and the temperature in the drum is 15K.
  • this allows a temperature difference to be defined at which condensation is to be expected.
  • the method can include a step of outputting a pump signal to an interface to a pump unit of the laundry treatment appliance in order to pump nebulized water into the drum.
  • the step of outputting the pump signal may occur prior to the steps of outputting the turn-on signal and the heating signal.
  • a pump can be switched on for this purpose, for example, in order to moisten dry laundry with finely misted water, which can be pumped out of a condensate tank and sprayed into the drum, for example. The process air can then be heated so that the water in the drum can evaporate.
  • a germ reduction in the laundry to be treated can advantageously be made possible by a combination of increased humidity with increased temperature in the course of a hygiene program.
  • the step of outputting the pump signal can also take place after the steps of outputting the switch-on signal and the heating signal.
  • the process air and the laundry arranged with it in the drum can be heated to a predetermined temperature before it can be moistened by the pump as a result of the pump signal.
  • the method can have a step of outputting a reversing signal to an interface to a drive of the drum in order to bring about a reversing state of the drum.
  • the drum of the laundry treatment appliance can be designed as a reversible drum, as a result of which a rotation process in two directions can advantageously be possible.
  • the drive of the drum can cause a change in the direction of rotation.
  • Such a reversing state can be implemented in response to the reversing signal, for example.
  • the laundry can be optimally dried with heated process air in the reversing state.
  • the laundry can also be moistened in the reversing state in order to advantageously achieve optimum moisture penetration of the laundry. Otherwise, the volume flow generated by the process air fan would ensure that the nebulized water is directed into a filter of the device, for example, and not into the laundry.
  • the treatment program can represent a hygiene program and the method can have a step of ending the hygiene program after a predetermined period of time after the step of outputting the switch-off signal.
  • a hygiene program the laundry in the laundry treatment appliance can advantageously not only be dried, but also experience a germ reduction.
  • the hygiene program can be used, for example, to hygienically prepare laundry that has already been washed and additionally or alternatively partially dried laundry. This can be advantageous, for example, when laundry has not been removed directly from the washing machine after a wash cycle, but has been left in the closed drum for a period of time, for example a few hours.
  • the laundry can be moistened and heated, for example, in order to reduce the germs that have formed.
  • the control device can include a counter, for example, which can count down a predetermined period of time, for example 30 minutes, as a result of the step of outputting the switch-off signal, ie at the end of the heating-up phase. During this period of time, the temperature in the drum can be kept at a target temperature value by means of the heating unit.
  • the hygiene program can be ended automatically after the time period has expired.
  • the method described here can be used accordingly in connection with a commercial or professional appliance, for example a medical appliance such as a cleaning or disinfection appliance.
  • the approach presented here also creates a device that is designed to carry out, control or implement the steps of a variant of a method presented here in corresponding devices.
  • the object on which the invention is based can also be achieved quickly and efficiently by this embodiment variant of the invention in the form of a device.
  • the device can be designed to read in input signals and to determine and provide output signals using the input signals.
  • An input signal can, for example, be read in via an input interface of the device Display sensor signal.
  • An output signal may represent a control signal or a data signal that may be provided at an output interface of the device.
  • the device can be designed to determine the output signals using a processing specification implemented in hardware or software.
  • the device can include a logic circuit, an integrated circuit or a software module and can be implemented as a discrete component, for example, or can be comprised of a discrete component.
  • the previously presented method for carrying out a treatment program can be optimally implemented in such a laundry treatment appliance.
  • a computer program product or computer program with program code which can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory, is also advantageous. If the program product or program is executed on a computer or a device, then the program product or program can be used to carry out, implement and/or control the steps of the method according to one of the embodiments described above.
  • FIG 1 shows a schematic representation of a laundry treatment appliance 100 according to an embodiment.
  • the laundry treatment appliance 100 comprises a drum 105 for receiving laundry, which is configured as a reversing drum, merely by way of example, in order to circulate the laundry in a reversing state in two different directions of rotation by means of a drive 107 and in this exemplary embodiment in response to a reversing signal 110 .
  • the reversing signal 110 can only be provided by a control device 115 as an example.
  • the control device 115 is also designed to receive a temperature signal 125 provided by a temperature sensor 120 arranged on the drum 105 , the temperature signal 125 representing a temperature in the drum 105 .
  • the laundry treatment appliance 100 is designed to carry out a treatment program through which laundry can be dried.
  • the treatment program can be carried out as a hygiene program in which the laundry can first be moistened in order to achieve an improved hygiene result.
  • the laundry treatment appliance 100 also includes a heat pump 130 which is designed to temper process air within the laundry treatment appliance 100 .
  • the heat pump 130 has an evaporator 132, a compressor 134, a condenser 136 and a throttle 138, merely by way of example.
  • the heat pump 130 can be switched on by the control device 115 using a switch-on signal 140, the switch-on signal 140 only being an example Beginning of a treatment program for drying arranged in the drum 105 laundry can be output in order to heat the process air guided by the heat pump 130 .
  • a compressor temperature sensor 144 assigned to compressor 134 is designed to detect a temperature of compressor 134 and to provide a compressor temperature signal 146 representing the temperature of compressor 134 to control device 115 .
  • the compressor temperature sensor 144 is embodied here as a refrigerant temperature sensor (NTC) that detects the temperature of the refrigerant on the pressure side of the compressor 134 .
  • NTC refrigerant temperature sensor
  • the temperature of the compressor 134 can be determined via the coolant temperature.
  • the temperature of the compressor can be detected via a temperature sensor arranged directly on the compressor 134 .
  • the control device 115 is designed to provide a switch-off signal 150 to the heat pump 130 in order to switch it off when a switch-off criterion dependent on the temperature signal 125 is met.
  • the switch-off criterion in this exemplary embodiment consists in reaching a predetermined target temperature value of 65° C. in drum 105, for example only.
  • control device 115 is designed to output switch-on signal 140 again and thus switch heat pump 130 back on when a switch-on criterion dependent on compressor temperature signal 146 is met.
  • the switch-on criterion in this exemplary embodiment is, purely by way of example, a temperature of the compressor 134 falling below a predetermined threshold temperature value, the threshold temperature value corresponding to 40° C. merely by way of example.
  • the heat pump 130 can thus be activated and deactivated again several times during the treatment program.
  • the laundry treatment appliance 100 in this exemplary embodiment includes a heating unit 160, which is designed to cause the process air to be heated.
  • the heating unit 160 can be controlled by the control device 115 using a heating signal 165 .
  • both the heat pump 130 and the heating unit 160 are designed to heat the process air.
  • a process air fan 170 is designed to convey the process air in a circuit out of the drum 105 , through the heat pump 130 and the heating unit 160 back into the drum 105 .
  • the process air in the circuit is also conveyed through a filter 172 . That too
  • the process air fan 170 can be controlled by the control device 115 using a process air signal 175 .
  • the laundry treatment appliance 100 also includes, purely by way of example, a pump unit 180 for pumping nebulized water into the drum 105.
  • a pump unit 180 for pumping nebulized water into the drum 105.
  • the pump unit 180 is designed to draw water from a condenser tank 182 for pumping.
  • the water can be pumped into the condensate tank 182 by a condensate pump 185 after it has condensed in the circuit of the heat pump 130 .
  • the pump unit 180 can be controlled by a control device 115 by means of a pump signal 190 .
  • the control device 115 is thus designed to control the execution of a treatment program by controlling the individual components of the laundry treatment appliance 100 .
  • FIG. 2 shows a flowchart of an embodiment of a method 200 for performing a treatment program.
  • the method can only be carried out by way of example in a laundry treatment appliance, as was described in the previous figure.
  • the method 200 includes a step 205 of outputting a switch-on signal to an interface to a heat pump of the laundry treatment appliance in order to cause heating of the process air and a step 210 of outputting a heating signal to an interface to the heating unit in order to also cause the process air to be heated .
  • the heat pump is also operated in addition to the electric heating. On the one hand, this increases the temperature of the compressor of the heat pump and, on the other hand, the heating-up phase of the system is shortened.
  • the method 200 also includes a step 215 of outputting a process air signal to an interface to the process air fan in order to circulate the process air through the drum, the heat pump and the heating unit.
  • steps 205, 210, 215 of outputting the switch-on signal, the heating signal and the process air signal are carried out in direct succession.
  • steps 205, 210, 215 can also be carried out in parallel or simultaneously or in another suitable order.
  • the process air is heated during the heating-up phase, ie until a temperature in the drum of the laundry treatment appliance corresponding to a predetermined target temperature value is reached, both by means of the heat pump and by means of the heating unit heated.
  • the target temperature value in this exemplary embodiment is 65° C., purely by way of example.
  • the heating-up phase ends when this target temperature value is reached, and a step 220 of outputting a switch-off signal to the interface to the heat pump follows in response to a temperature signal representing the target temperature value in order to switch off the heat pump.
  • the switch-off signal can be output as a result of another switch-off criterion, for example when a temperature in the compressor of the heat pump is greater than a temperature in the drum by a predetermined temperature difference, for example a difference of 15K.
  • the heat pump is switched off from a defined hot gas temperature, which is permanently measured, for example, via a thermistor (NTC).
  • NTC thermistor
  • the heating-up phase is thus ended and the program is to be operated during a further treatment phase following the heating-up phase only with the additional electrical heating.
  • the treatment phase extends to the end of the treatment program, so that the process air is temperature-controlled after the heating-up phase, if possible, exclusively using the heating unit.
  • the heat pump can be activated temporarily during the treatment phase.
  • the state in which the heat pump is deactivated is retained until the temperature of the compressor of the heat pump, which can also be referred to as the hot gas temperature, falls below a second defined value, ie a predetermined threshold temperature value.
  • the threshold temperature value is 40° C. and is therefore lower than the target temperature value.
  • the heat pump is controlled again in a step 225 of re-emitting the switch-on signal to the interface to the heat pump in order to switch on the heat pump.
  • the heat pump is now in operation again, for example, until the temperature of the compressor again approximately corresponds to the temperature of the drum, i.e. until the target temperature value is reached.
  • this is followed by a step 227 of re-emitting a switch-off signal in order to switch off the heat pump again.
  • the steps 225, 227 of re-issuing the turn-on signal and re-issuing the turn-off signal are repeatedly performed during the treatment phase and the heat pump is repeatedly turned on and off. This process ensures that the compressor always has a certain level of heat and thus prevents condensation inside.
  • step 220 of the initial output of the switch-off signal is followed by a step 230 of ending the treatment program.
  • FIG. 2 shows a flowchart of an embodiment of a method 200 for carrying out a hygiene program.
  • the method 200 corresponds or is similar to that in the previous one figure 2 illustrated method, wherein in this embodiment, the treatment program is executed as a hygiene program.
  • step 205 of outputting the switch-on signal is preceded by a step 305 of outputting a reversing signal to an interface to a drum drive and a step 310 of outputting a pump signal to an interface to a pump unit of the laundry treatment appliance.
  • step 305 of outputting the reversing signal the drum of the laundry treatment appliance, which is designed as a reversing drum, is controlled in order to be put into a reversing state.
  • step 310 of outputting a pump signal the laundry in the drum is evenly moistened with nebulized water pumped into the drum.
  • the damp laundry is heated by the subsequent steps 210, 215 of outputting a switch-on signal and a heating signal, in order thereby to reduce germs.
  • figure 4 shows a diagram of an embodiment of a temperature-related activation of a compressor of a heat pump of a laundry treatment appliance during the execution of a treatment program, as in the previous one figure 1 was described.
  • partial figure 4A represents an activity state 400 of the compressor, which is repeatedly switched on and off during the treatment program.
  • the compressor control in this exemplary embodiment is directly dependent on a compressor temperature 405 of the compressor, as shown in subfigure 4B, and on a process air temperature 410 of a process air routed through the heat pump, as shown in subfigure 4C.
  • the process air temperature 410 corresponds to the temperature in the drum of the laundry treatment appliance.
  • the compressor is switched on with the start 415 of the treatment program.
  • the compressor temperature 405 like the process air temperature 410, corresponds, for example, to an installation temperature of the laundry treatment appliance of just 18° C., for example.
  • the temperature increases, with the compressor temperature 405 rising faster than the process air temperature 410.
  • both the heat pump and an additional heating unit are used to heat the process air.
  • the compressor is switched off and the compressor temperature 405 drops again, while the process air temperature 410 continues to rise slightly, for example due to the further operation of the heating unit, for example until the temperature in the drum also reaches the target temperature value or another target temperature value.
  • the compressor temperature 405 falls while the heat pump is switched off to a predetermined threshold temperature value 430 of just 40° C., for example.
  • this threshold temperature value 430 is reached, the compressor is switched on again, the compressor temperature 405 rises again to the target temperature value 425, whereupon the compressor is switched off again.
  • the heat pump is thus switched on temporarily for a maintenance phase 440 .
  • the heating unit is also switched on.
  • the compressor can be switched on and off multiple times if the compressor temperature 405 repeatedly falls below the threshold temperature value 430 and then reaches the target temperature value again.
  • the heat pump can be protected from damage by switching the compressor on again from time to time.
  • several maintenance phases 440 can be carried out until the end of the treatment program.
  • the heating-up phase 420 ends when the process air temperature 410 reaches a corresponding target temperature value.
  • figure 5 shows a diagram of an embodiment of a temperature-related control of a compressor.
  • the compressor control shown here in sub-figures 5A, which can also be referred to as compressor control, is similar to the previous one figure 4 described.
  • the compressor is also switched off when the compressor temperature 405 reaches the target temperature value 425 .
  • the heating-up phase 420 is thus ended.
  • the heating-up phase 420 ends when the process air temperature 410 reaches a corresponding target temperature value.
  • the compressor is switched on again when the compressor temperature 405 is lower than the process air temperature 410 .
  • the maintenance phase 440 that begins therewith ends when there is a predetermined temperature difference between the compressor temperature 405 and the process air temperature 410 , for example when the compressor temperature 405 is more than 15K greater than the process air temperature 410 . In another embodiment, the temperature difference is between 10K and 20K, for example.
  • the compressor and thus the heat pump are switched off. The further temperature control of the process air then only takes place via the heating unit until a new maintenance phase 440 begins.
  • Such a new maintenance phase 440 begins with the compressor being switched on again as soon as the compressor temperature 405 is lower than the process air temperature 410 again.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP22159516.8A 2021-03-18 2022-03-01 Procédé de mise en uvre d'un programme de traitement pour un appareil de buanderie, dispositif de commande et appareil de buanderie Pending EP4060114A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021106629.8A DE102021106629A1 (de) 2021-03-18 2021-03-18 Verfahren zum Durchführen eines Behandlungsprogramms für ein Wäschebehandlungsgerät, Steuervorrichtung und Wäschebehandlungsgerät

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EP4060114A1 true EP4060114A1 (fr) 2022-09-21

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EP22159516.8A Pending EP4060114A1 (fr) 2021-03-18 2022-03-01 Procédé de mise en uvre d'un programme de traitement pour un appareil de buanderie, dispositif de commande et appareil de buanderie

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007289558A (ja) * 2006-04-27 2007-11-08 Matsushita Electric Ind Co Ltd 洗濯乾燥機
US20150096190A1 (en) * 2011-03-29 2015-04-09 Lg Electronics Inc. Controlling method for clothes dryer
US20190276978A1 (en) * 2018-02-23 2019-09-12 Samsung Electronics Co., Ltd. Clothes dryer and control method thereof

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EP3124678B1 (fr) 2015-07-27 2018-06-20 Electrolux Appliances Aktiebolag Procédé de fonctionnement d'un appareil de lavage et/ou de séchage de pompe à chaleur et un tel appareil de lavage ou de séchage
EP3124690A1 (fr) 2015-07-27 2017-02-01 Electrolux Appliances Aktiebolag Procédé d'exploitation d'un séchoir à pompe à chaleur
EP3425107B1 (fr) 2017-07-07 2020-06-17 Electrolux Appliances Aktiebolag Procédé pour commander une machine de séchage de linge à pompe à chaleur

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JP2007289558A (ja) * 2006-04-27 2007-11-08 Matsushita Electric Ind Co Ltd 洗濯乾燥機
US20150096190A1 (en) * 2011-03-29 2015-04-09 Lg Electronics Inc. Controlling method for clothes dryer
US20190276978A1 (en) * 2018-02-23 2019-09-12 Samsung Electronics Co., Ltd. Clothes dryer and control method thereof

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