EP3255204A1 - Procédé de détermination de l'humidité résiduelle dans un séchoir à condensation et séchoir à condensation adapté - Google Patents

Procédé de détermination de l'humidité résiduelle dans un séchoir à condensation et séchoir à condensation adapté Download PDF

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Publication number
EP3255204A1
EP3255204A1 EP17175016.9A EP17175016A EP3255204A1 EP 3255204 A1 EP3255204 A1 EP 3255204A1 EP 17175016 A EP17175016 A EP 17175016A EP 3255204 A1 EP3255204 A1 EP 3255204A1
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EP
European Patent Office
Prior art keywords
process air
temperature
drum
residual moisture
laundry
Prior art date
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Granted
Application number
EP17175016.9A
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German (de)
English (en)
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EP3255204B1 (fr
Inventor
Alvaro Harbach
Andreas Stolze
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication of EP3255204A1 publication Critical patent/EP3255204A1/fr
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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
    • D06F2103/02—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
    • D06F2103/08—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
    • D06F2103/28—Air properties
    • D06F2103/30—Pressure
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/34—Humidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/36—Flow or velocity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/50—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
    • D06F2105/62—Stopping or disabling machine operation
    • 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 
    • D06F58/24—Condensing arrangements

Definitions

  • the invention relates to a method for determining the residual moisture content in a condensation dryer and a condensation dryer suitable for this purpose.
  • the invention particularly relates to a method for operating a condensation dryer with a process air duct, in which process air is moved by means of a fan in a circuit, a drum with laundry items placed therein, and a control device, wherein in the process air duct, a heat exchanger for condensing water from moist, warm process air and at least one humidity sensor are arranged, as well as a particularly suitable for carrying out this method condensation dryer.
  • Drying processes according to the condensation method are based on the evaporation of moisture from laundry items by means of warm process air and dehumidification of the process air by condensation on a heat exchanger.
  • cool process air is generally passed through a fan through a heater.
  • the dry-heat process air then enters the drum as a drying chamber, which contains the items to be dried.
  • the dry-warm process air absorbs moisture from the laundry.
  • the now moist, warm process air is forwarded by the drum in a heat exchanger for dehumidification, for example, in an air-to-air heat exchanger or the evaporator of a heat pump.
  • the moist, warm process air is cooled in it, whereby the water contained in it is condensed and collected in a so-called condensate sump, which is generally located below the heat exchanger.
  • the condensed water is usually pumped by a pump (also called a "condensate pump") into a caching container (also called a “condensate container”) or into a sewer.
  • a drying process is divided into three phases, namely a heating phase, a main drying phase and a cooling phase.
  • the heating phase the process air temperature rises until a predetermined temperature value is reached. With increasing Temperature can absorb the process air more water from the laundry, so that more water condenses on the heat exchanger used for cooling.
  • the preset temperature the process air generally absorbs a constant amount of water from the laundry in the drum. This means that the condensation of water remains constant.
  • This section is referred to as a stationary phase of a drying process or as a main drying phase. The course of evaporation or condensation is stationary as long as surface water is evaporated from the laundry.
  • a drying process (also referred to as "drying program") is concluded with a cooling phase in which the heating is generally switched off and in which the dried laundry is cooled.
  • a determination of the loading of the drum with laundry items should preferably be carried out in a drying process in order to be able to adapt the drying process to the load since different quantities of laundry items behave differently.
  • the drying process is preferably carried out so that a certain final moisture content of the dried laundry items is reached. It is generally concluded from the measurement of the electrical resistance of the laundry to the degree of moisture. For this purpose, a different number of electrodes is usually arranged at different positions in the dryer. By means of these electrodes, the laundry resistance is measured by DC or AC methods. For a given laundry resistance as a so-called shutdown, in particular for the heating of the process air, then the drying process is usually completed. However, these cut-off values depend on the load and the initial moisture content (also referred to as "initial residual moisture" of wet laundry items from a washing machine), since the relative humidity of the process air for larger load volumes is certainly greater, for example, for the same humidity.
  • the publication DE 10 2008 021 598 A1 describes a laundry drying apparatus with a control unit for controlling a drying process.
  • the control unit is set up to control the drying process on the basis of sensor data of a loading sensor.
  • the publication DE 10 2009 028 358 A1 describes a laundry treatment device for drying and / or washing laundry, with a rotatably mounted drum, an electric motor for driving the drum, and a control and measuring device for the electric motor, wherein the control and measuring device detects at least one electrical parameter of the electric motor and in Depending on the detected electrical parameter determines a loading of the drum, in particular the mass of the introduced into the drum laundry.
  • the publication DE 42 43 594 C2 describes a method for controlling the drying process of a tumble dryer comprising a drum, a heat transfer fan, a motor, a heater, two temperature sensors, and a humidity sensor, the sensors being disposed between the drum and the heat transfer fan.
  • the temperature change per unit time and a humidity value are measured. From the sum of these two values, a mean value is determined and the amount of laundry based thereon is determined as a small amount, a large amount or oversized quantities.
  • the further drying process is controlled according to the particular amount of laundry.
  • the publication DE 10 2006 037 239 A1 describes a clothes dryer or a laundry dryer and a method for controlling the drying of wet laundry in a laundry drum of the clothes dryer or washer dryer, in which warm air is generated and a drying process is completed taking into account at least one moisture value or a corresponding reading of the laundry to be dried.
  • a temperature variable determined during the drying of the laundry during or after reaching a predetermined moisture value or a corresponding measured value, which corresponds to the respective type of laundry and / or the respective loading state of the laundry drum is used.
  • the publication DE 44 11 958 A1 describes a household laundry dryer with an electronic program control device and with a rotatably mounted laundry drum and a fan for conveying the passing of a radiator over drying air through the laundry drum.
  • the increase over time of the electrical resistance of the material to be dried and the temperature difference between the drum inlet and outlet drum temperature are recorded and evaluated, conclusions being drawn therefrom with the aid of an electronic device on the type of laundry and the laundry weight of the material to be dried.
  • the data obtained in this way are supplied to the program control device as control variables for the further sequence control of the selected drying program.
  • the publication DE 199 18 877 A1 describes a method for estimating the loading and / or drying time of a household laundry drier prior to the drying process, wherein a laundry moisture dependent size and a measure of the temperature of an air stream for drying the laundry before and / or after its contact with the laundry is determined.
  • the amount dependent on the fabric moisture is used in conjunction with the measure of the temperature of the air stream before and / or after its contact with the laundry to estimate the loading and / or the drying time.
  • the publication EP 2 227 585 B1 describes a laundry drying apparatus and a method for operating this device, in which a moisture content of discharged from a laundry drum process air is determined and with a heat exchanger the humidity is at least partially condensed from the process air, wherein the moisture determination is determined by measuring at least one temperature for a medium flowing through the heat exchanger and by evaluating the measured temperature.
  • the medium is either the process air or a coolant, and the moisture content is determined by measuring an outlet temperature of the medium on the outlet side of the heat exchanger and an inlet temperature of the medium on the inlet side of the heat exchanger.
  • the publication WO 2014/040904 A2 describes a condensation dryer with determination of the load and a method for its operation.
  • At least one temperature sensor is arranged in a cooling medium channel and / or process air channel and the control device is set up in order to determine a loading of the drum with items of laundry on the basis of a time profile of the temperature measured with the at least one temperature sensor and a time profile of the amount of condensed water.
  • the condensation rate is determined, for example, by means of a water level sensor in the condensate tray or via a flow sensor or via the number of pump cycles over a specific period of time.
  • the patent DE 42 11 012 C2 describes a method for controlling the drying process in dependence on the moisture content of the material to be dried in a dryer for laundry or other objects to be dried, equipped with a condensation device for the expelled moisture, wherein the gradient of a state variable occurring at the condensation device, such as condensation amount, condensate Flow rate or the like, is used as a measured variable.
  • the rising gradient values provide information about the amount of laundry in a tumble dryer.
  • the publication EP 0 481 561 A2 describes a method of controlling the degree of dryness in a dryer, a washer-dryer or the like comprising a drum, conventional means for generating a circulation of hot air through the drum for drying the laundry therein, means for cooling said air, at least one tank or vessel for collecting the water removed from the laundry by said air, condensing on one or more of the devices during circulation, and a pump for removing the water the vessel, advantageously cyclically.
  • the amount of water released from the laundry items during their drying is measured and a signal for stopping the machine is provided if the obtained measured value is less than a predetermined value.
  • the publication EP 0 088 175 A1 describes a drum dryer with a microwave heating for the process air.
  • a humidity sensor is disposed in front of the drum and one after the drum. The difference in the measured moisture values is used to control the drying process, in particular to avoid over-drying or to set a specific moisture content of the laundry items.
  • the object of the present invention was to provide an improved method for controlling a drying process in a condensation dryer. Preferably, this is intended to improve a determination of the residual moisture content and thus of a criterion for the termination of a drying process.
  • the object of the invention was also to provide a suitable condensation dryer.
  • a predetermined minimum water load L W min of the process air is used as a measure of the predetermined residual moisture R W set .
  • the beginning of the process according to the invention generally takes place at the same time as the initiation of a drying program.
  • the heater and the fan are turned on to direct heated process air for drying wet laundry in the drum.
  • a temperature sensor and a moisture sensor are arranged in the process air duct either before or after the drum.
  • an initial moisture L W init is taken into account, wherein a relationship between the initial moisture L W init and the predetermined residual moisture R W set stored in the control device is used.
  • the temperature sensors and humidity sensors used are not limited, as long as they can be used to measure a temperature or a relative humidity of the process air.
  • sensors are used with which temperature and relative humidity of the process air can be measured simultaneously.
  • a dual sensor is used as temperature sensor and as moisture sensor, with the same time, the temperature T P and the relative humidity H rel of the process air can be measured.
  • At least one pressure sensor is present in the process air duct, which measures the pressure P P of the process air, which then used for the determination of the water load L W is, with a deposited in the controller relationship between the pressure P P , a maximum water load L W max and the temperature T P is used.
  • a triple sensor is used as the pressure sensor, with the same time, the relative humidity H rel and the temperature T P can be measured.
  • a drying process in a condensation dryer is particularly influenced by an air flow of the process air, since the size of the air flow also determines how long a certain amount of air can be in contact with wet laundry.
  • the air flow A P of the process air is set or measured and considered for the determination of the predetermined residual moisture R W set , wherein a stored in the controller relationship between the air flow A P and the residual moisture R W set is used ,
  • a measure of the air flow A P of the process air while a speed or power consumption of the process air blower is considered.
  • an actual air flow of the process air can also be measured by a flow meter and then regarded as the air flow A P of the process air.
  • the moisture content of the laundry items i.
  • the humidity or residual moisture content changes during a drying process, since first surface water and finally pore and capillary water evaporates from the fabric of the laundry items.
  • the course of a degree of moisture in a drying process is different and a continuous and accurate determination of a degree of moisture therefore advantageous for a laundry and energy efficient drying of the laundry, as well as a precise control of the final moisture content with respect to a given Values such as "iron-dry".
  • a drying process is thus influenced by the proportions of surface water and water present in the interior of the laundry, the latter being removed from the laundry items only relatively slowly. A drying process therefore also depends on the load of laundry items.
  • a load W of the drum with laundry items for the determination of the predetermined residual moisture R W set is taken into account, wherein a stored in the controller relationship between the load W and the residual moisture R W set is used.
  • the loading amount and / or initial moisture may be adjusted by a user or preferably determined by the dryer.
  • a determined loading amount refers to the dry mass of the laundry items to be dried introduced into the drum.
  • items of laundry have a moisture content, based on the dry weight of the items of laundry, for example of about 60% after a washing process and spinning at 1200 rpm.
  • different loading volumes behave differently in a drying process. For example, a full-load drying process may be longer than a half-load drying process. Likewise, the duration of the individual phases passed through in the drying process can be different.
  • the type of determination of the load W of the drum with items of laundry is not restricted according to the invention.
  • the load can be set by user input.
  • the loading of the drum is determined by the dryer, for example by weighing the drum and / or by evaluating a motor current and / or electrical power of the electric drive motor.
  • the loading is preferably determined by evaluating a motor current and / or an electrical power of the electric drive motor. If, for example, the power delivered to the electric drive motor is kept constant, the dependence of the motor current on a load of the electric drive motor can be used to determine the loading state of the drum. In this case, in particular, a course of the current within a predetermined period of time, for example, during a run-up of the drum, are tracked. It can on the dependence of the torque of the electric drive motor of the loading state the drum as well as due to the dependence of the torque of the motor current are closed to the load.
  • the method according to the invention also makes it possible to determine and take into account the amount of loading with items of laundry and / or the initial moisture of the items of laundry.
  • these properties of items of laundry can be advantageously determined by determining a maximum value of the absolute water load.
  • this also a kind of laundry and thus the fibers are taken into account.
  • the time of occurrence of the maximum of the absolute water load L W can be determined.
  • a timing device generally provided in the condensation dryer is used.
  • a relationship between a load of laundry items and the time of the maximum of the water load is also stored in the control device.
  • a method is preferred in which the past time period ⁇ t max measured in the condensation dryer until the maximum L W max of a water load L W has been measured and evaluated with regard to a load W of the drum with laundry items.
  • a relationship between the period .DELTA.t max and the load W of the drum with laundry items is generally stored in the control device.
  • the maximum L W max of a water load L W is evaluated with respect to a load W of the drum with laundry, wherein a stored in the control device for different initial humidities L W init relationship between the load W of the drum and the Maximum L W max is used.
  • a condensation dryer is preferred in which a temperature sensor and a moisture sensor are arranged in the process air duct before and / or after the drum.
  • a triple sensor is used as the temperature sensor and as a humidity sensor, with which in addition to the temperature T P and the relative humidity H rel and an air pressure P P of the process air can be measured.
  • a condensate pump is arranged in a condensate tray or in a condensate tray connected to the condensate tray.
  • the condensate tray is generally connected via a so-called condensate channel with a container for intermediate storage of the condensate, ie a condensate tank, or with a sewer pipe for disposal of the condensate.
  • the condensate tray is arranged in the bottom group of the condensation dryer and the condensate against gravity from this is removed, a condensate pump is preferably arranged in the condensate pan or in the condensate channel in the condensation dryer according to the invention.
  • the condensation dryer according to the invention has a heater, in particular an electric heater or a gas heater, wherein an electric heater is preferably used.
  • the heater serves to heat the process air before it is introduced into the drum of the condensation dryer.
  • the condensation dryer also has a fan in the process air duct, which is also referred to herein as a process air blower.
  • the condensation dryer according to the invention which is designed in particular as a circulating air dryer, at least one heat exchanger for dehumidifying the moist, warm process air is present. This is generally achieved by cooling the moist, warm process air.
  • the heat exchanger generally uses a cooling medium, for example cooling air or a refrigerant, for dehumidifying the process air.
  • the heat exchanger is in particular an air-air heat exchanger or a heat sink of a heat pump, in particular an evaporator.
  • a heat pump is characterized by two heat exchangers, namely a heat sink, in which heat is absorbed, a heat source in which heat is released, and a pumping device, which transfers heat from the heat sink to the heat source optionally with a change in temperature.
  • the cooling of the warm, moisture-laden process air takes place essentially in the heat sink of the heat pump, also referred to as evaporator, where the heat transferred is used to evaporate a refrigerant circulating in the pump device designed as a circuit
  • the refrigerant vaporized due to the heating is supplied to the heat pump in the pumping means via a compressor of the heat source, which is a condenser for the refrigerant, where heat is released due to the liquefaction of the gaseous refrigerant.
  • a compressor of the heat source which is a condenser for the refrigerant, where heat is released due to the liquefaction of the gaseous refrigerant.
  • the then liquid refrigerant is expanded in a throttle of the pumping device, whereby its internal pressure is lowered, and finally comes back to the evaporator.
  • the condensation dryer according to the invention is located in the process air duct preferably an air-to-air heat exchanger or an evaporator of a heat pump. If an air-air heat exchanger is used, preferably a cooling air duct is present therein, through which comparatively cool air, in particular from an installation space of the dryer, is passed as the cooling medium by means of a cooling air blower.
  • the condensation dryer according to the invention is in particular a tumble dryer per se or a washer-dryer.
  • a washer-dryer here is a combination device that has a washing function for washing laundry and a drying function for drying wet laundry.
  • the condensation dryer advantageously has an optical and / or acoustic display device for different states of the condensation dryer.
  • an optical display device is preferably used.
  • the display device can give information about the operation of the dryer, for example, by the course of the absolute water load L W and / or the residual moisture R W of the laundry items, on the load, the phase of the drying process, for example by issuing a text or by lighting different colored LEDs Heating phase, stationary phase, transient phase, or the remaining time of a drying process.
  • Processes and condensation dryers of the invention have several advantages. Advantages of the invention are in particular that in a drying process, a desired residual moisture of laundry items can be adjusted improved, so that the completion of a drying process can be optimized.
  • laundry properties such as loading and moisture level can be determined and taken into account in an accurate manner by evaluating the time profile of the absolute water loading of the process air during the drying process.
  • the execution of the individual phases of a drying process and in particular the control of a drying process to achieve a predetermined residual moisture content of the laundry items are in embodiments of the invention for each individual loading of the drum with laundry possible.
  • the inventive method and the condensation dryer according to the invention thus allow an individual, energy-efficient and laundry-friendly implementation of a drying process adapted to the requirements of the user.
  • the drying process After a heating phase dependent on the loading and the initial residual moisture, the drying process is generally in a stationary state.
  • the relative humidity of the process air at the drum outlet can rise up to 100%.
  • Both water loads, before and after the drum have a maximum.
  • the difference between the two as a measure of the water absorption of the process air as a result of the laundry drying then decreases with increasing drying time.
  • the relationship between the degree of dryness of the laundry, i. Residual moisture, and the difference of the water load can then serve as a good shutdown criterion for the heating of the process air and thus the termination of the drying process.
  • This switch-off criterion is generally dependent on the load and the process air volume flow, but almost independent of the initial residual moisture, these influencing factors being taken into account in embodiments of the invention.
  • FIG. 1 shows a vertical section through a dryer, which is designed as a condensation dryer, wherein the arrows indicate the flow direction of the process air.
  • a dryer which is designed as a condensation dryer, wherein the arrows indicate the flow direction of the process air.
  • Other embodiments are conceivable.
  • the in FIG. 1 shown dryer 1 has a rotatable about a horizontal axis drum 3 for receiving to be dried, not shown here, laundry items, on, are mounted within which driver 5 for moving laundry items during a drum rotation.
  • the process air is guided in the process air duct 2 by means of a process air blower 6 through an air-air heat exchanger 14 and an electric heater 4 through the drum 3.
  • air heated by the electric heater 4 is passed through the drum inlet 19 from the rear, ie from the side of the drum 3 opposite a door 12, through the perforated base into the drum 3.
  • the process air laden with moisture flows through the filling opening of the drum 3 through a lint filter 11 inside the door 12 closing the filling opening.
  • the process air flow in the door 12 is then deflected downwards through the drum outlet 18 into the process air duct 2 and directed to the air-to-air heat exchanger 14 can be transported by the cooling air in a cooling air passage 15 by means of a cooling air blower 16.
  • a cooling air blower 16 In the air-air heat exchanger 14 condenses due to cooling a more or less large part of the process air from the laundry absorbed moisture and is collected in a condensate pan 17.
  • the control of the dryer 1 via a control device 8, which can be controlled by the user via an operating unit 7.
  • Two triple sensors 9, 10, namely a triple sensor 9 at the drum outlet 18 and a triple sensor 10 at the drum inlet 19, are connected to the control device 8.
  • the triple sensors can each measure a relative humidity, a temperature and the air pressure of the process air and thus provide the measured values which are required for the method according to the invention and preferred embodiments thereof, so that the residual moisture of the laundry items and in particular a loading of the drum 3 with laundry items determined can be.
  • a time measuring device 20 is present in the condensation dryer.
  • the process air blower 6 and the drum 3 are driven by the drive motor 13.
  • the drive motor 13 in this embodiment is a brushless DC motor (BLDC).
  • BLDC brushless DC motor
  • the drum is heavily stocked, for example, in the ratio 1:55, whereas the process air blower is not stocky, but is driven by the drive motor with a speed ratio of 1: 1.
  • a display device 21 allows the display of a residual maturity of the drying process with respect to a user selected residual moisture value, such as iron dry, or the display of the determined load or other conditions of the dryer or the display of the status of the drying process, for example in color differentiated form.
  • a user selected residual moisture value such as iron dry

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Drying Of Solid Materials (AREA)
EP17175016.9A 2016-06-10 2017-06-08 Procédé de détermination de l'humidité résiduelle dans un séchoir à condensation et séchoir à condensation adapté Active EP3255204B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016210265.6A DE102016210265A1 (de) 2016-06-10 2016-06-10 Verfahren zur Ermittlung der Endrestfeuchte in einem Kondensationstrockner sowie hierfür geeigneter Kondensationstrockner

Publications (2)

Publication Number Publication Date
EP3255204A1 true EP3255204A1 (fr) 2017-12-13
EP3255204B1 EP3255204B1 (fr) 2019-08-07

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EP17175016.9A Active EP3255204B1 (fr) 2016-06-10 2017-06-08 Procédé de détermination de l'humidité résiduelle dans un séchoir à condensation et séchoir à condensation adapté

Country Status (3)

Country Link
EP (1) EP3255204B1 (fr)
CN (1) CN107489008B (fr)
DE (1) DE102016210265A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3346050A1 (fr) * 2017-01-09 2018-07-11 BSH Hausgeräte GmbH Appareil de traitement du linge et procédé de fonctionnement d'un appareil de traitement du linge
EP3346049A1 (fr) * 2017-01-09 2018-07-11 BSH Hausgeräte GmbH Appareil de traitement du linge et procédé de fonctionnement d'un tel appareil
CN111235845A (zh) * 2018-11-13 2020-06-05 Bsh家用电器有限公司 具有改进的控制装置的洗涤物烘干机及其运行方法

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DE102021202230A1 (de) * 2021-03-09 2022-09-15 BSH Hausgeräte GmbH Kondensationstrockner mit Wärmepumpe und Umluftanteil sowie Verfahren zu seinem Betrieb
CN114182507B (zh) * 2021-11-30 2022-07-26 珠海格力电器股份有限公司 一种烘干除皱方法及洗干一体机
CN118048778A (zh) * 2022-11-09 2024-05-17 无锡小天鹅电器有限公司 烘干控制方法、装置、介质以及衣物处理设备

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EP0481561A2 (fr) 1990-10-18 1992-04-22 Whirlpool Europe B.V. Procédé et dispositif pour contrôler la phase de séchage dans un sèche-linge, une machine à laver ou similaire
DE4243594C2 (de) 1991-12-23 1998-03-12 Gold Star Co Verfahren zum Steuern eines kombinierten Wäschetrockners der Sensorbauart
DE4211012C2 (de) 1992-04-02 2000-11-23 Bsh Bosch Siemens Hausgeraete Verfahren und Vorrichtung zum Steuern eines Trocknungsvorganges
DE4411958A1 (de) 1994-04-07 1995-10-12 Licentia Gmbh Haushalt-Wäschetrockner
DE19918877A1 (de) 1999-04-26 2000-11-02 Bsh Bosch Siemens Hausgeraete Verfahren zum Schätzen der Beladung und der Trocknungsdauer in Haushaltwäschetrocknern vor Ablauf des Trocknungsvorgangs
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DE102009028358A1 (de) 2009-08-07 2011-02-17 BSH Bosch und Siemens Hausgeräte GmbH Wäschebehandlungsgerät mit einem Elektromotor
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WO2014040904A2 (fr) 2012-09-14 2014-03-20 BSH Bosch und Siemens Hausgeräte GmbH Sèche-linge à condensation à détermination de la charge ainsi que procédé pour son fonctionnement
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Publication number Priority date Publication date Assignee Title
EP3346050A1 (fr) * 2017-01-09 2018-07-11 BSH Hausgeräte GmbH Appareil de traitement du linge et procédé de fonctionnement d'un appareil de traitement du linge
EP3346049A1 (fr) * 2017-01-09 2018-07-11 BSH Hausgeräte GmbH Appareil de traitement du linge et procédé de fonctionnement d'un tel appareil
CN111235845A (zh) * 2018-11-13 2020-06-05 Bsh家用电器有限公司 具有改进的控制装置的洗涤物烘干机及其运行方法
CN111235845B (zh) * 2018-11-13 2023-09-19 Bsh家用电器有限公司 具有改进的控制装置的洗涤物烘干机及其运行方法

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CN107489008A (zh) 2017-12-19
EP3255204B1 (fr) 2019-08-07

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