EP2227585B1 - Wäschetrocknungsgerät mit einer feuchtigkeitsbestimmungseinrichtung und verfahren zum betreiben eines wäschetrocknungsgeräts - Google Patents

Wäschetrocknungsgerät mit einer feuchtigkeitsbestimmungseinrichtung und verfahren zum betreiben eines wäschetrocknungsgeräts Download PDF

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Publication number
EP2227585B1
EP2227585B1 EP08865120A EP08865120A EP2227585B1 EP 2227585 B1 EP2227585 B1 EP 2227585B1 EP 08865120 A EP08865120 A EP 08865120A EP 08865120 A EP08865120 A EP 08865120A EP 2227585 B1 EP2227585 B1 EP 2227585B1
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EP
European Patent Office
Prior art keywords
temperature
process air
coolant
cooling body
moisture
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.)
Revoked
Application number
EP08865120A
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German (de)
English (en)
French (fr)
Other versions
EP2227585A1 (de
Inventor
Pilar Balerdi Azpilicueta
Iñigo BERAZALUCE MINONDO
Esther Padilla Lopez
Roberto San Martin Sancho
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP2227585A1 publication Critical patent/EP2227585A1/de
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • 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
    • D06F2103/50—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
    • 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
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements

Definitions

  • the invention relates to a laundry drying apparatus having a laundry drum, a moisture determination device for determining a moisture content of the process air discharged from the laundry drum and a cooling body for cooling the process air, wherein the moisture determination device has at least one temperature sensor, and the at least one temperature sensor behind an inlet of the heat sink for a Cooling medium flowing through or arranged in the heat sink medium is arranged.
  • the invention relates to a method for operating a laundry drying apparatus in which a moisture content of discharged from a laundry drum process air is determined and at least partially condensed with a heat sink from the process air humidity, wherein the moisture determination by measuring at least one temperature for a Cooling medium flowing through or a medium in the heat sink and determined by evaluating the measured temperature.
  • WO 2005/054563 A1 is a laundry dryer with a heat sink for process air, a temperature outside the heat sink arranged temperature sensor and also arranged outside the heat sink moisture sensor forth.
  • a laundry drying apparatus with a laundry drum, a moisture determination device for determining a moisture content of discharged from the laundry drum process air and a heat sink for cooling the process air.
  • Water condensed from the process air is collected in a liquid container or discharged via a water outlet.
  • laundry drying devices are known, which are referred to as condensation dryer and have a heat sink, which is filled with a coolant before the start of the laundry dryer.
  • this is tap water, which is embedded in a heat sink and renewed when needed.
  • laundry drying devices which have a heat pump to condense a moisture content in the process air.
  • heat pumps consist in particular of a compressor or condenser for liquefying a coolant and of an evaporator for evaporating the coolant.
  • Process air passed past the evaporator is cooled correspondingly, so that moisture contained therein at least partially condenses out.
  • Such clothes drying devices are designed for drying laundry, and are controlled by a controller so that they can detect a remaining moisture in the laundry to automatically stop the drying process when sufficient drying is achieved. As a result, a drying time and corresponding energy consumption can be reduced.
  • such laundry drying devices are designed with a moisture-determining device which, in the form of a moisture sensor in conjunction with the control device, measures moisture directly in the process air leaving the laundry drum.
  • Corresponding humidity sensors are available depending on the manufacturer in different design and technology. However, a direct measurement of the moisture or moisture content of process air discharged from the laundry drum is always measured by such humidity sensors. The disadvantage here is that the humidity sensors are complicated to manufacture and correspondingly expensive components.
  • a moisture determination device for determining a moisture content of the process air discharged from the laundry drum and a cooling body for cooling the process air
  • the moisture determination device has at least one temperature sensor, and the at least one temperature sensor behind an inlet of the heat sink for a heat sink
  • the medium is selected from the group containing the process air and a coolant
  • the at least one temperature sensor for measuring an outlet temperature of the medium is arranged on the outlet side of the heat sink and is another temperature sensor for Measuring an inlet temperature of the medium disposed on the inlet side of the heat sink.
  • Such an arrangement makes it possible to circumvent the use of an expensive humidity sensor, since at least one temperature sensor is used for the indirect determination of the moisture content instead of a humidity sensor for the direct measurement of a moisture content.
  • a lifetime of the sensor or sensors can be achieved in comparison to a humidity sensor.
  • the temperature sensors unlike dedicated humidity sensors, do not need to be cooled and detection accuracy is increased.
  • the at least one temperature sensor is arranged behind an inlet of the heat sink for a medium flowing through the heat sink (eg, process air or coolant) or for a medium (eg, coolant) located in the heat sink.
  • a medium flowing through the heat sink eg, process air or coolant
  • a medium eg, coolant
  • the at least one temperature sensor for measuring a temperature of the process air is arranged on the outlet side of the heat sink.
  • the outlet side of the heat sink can both be understood as meaning that the temperature sensor is still arranged within a cooling section of the heat sink, and preferably understood to be arranged outside the cooling section of the heat sink. It is important that the process air could transfer at least as much latent heat to the coolant that moisture could condense out of the process air. Since overheating of clothing to be dried is usually not to be feared, as long as it is still wet and the process air is preferably enriched to saturation with moisture, the use of a single such temperature sensor is sufficient.
  • the at least one temperature sensor is in particular arranged behind a coolant inlet of the heat sink for measuring a temperature of a coolant flowing through the heat sink (eg in the case of a heat exchanger).
  • the at least one temperature sensor may be arranged behind a coolant inlet of the heat sink for measuring a temperature of a coolant located in the heat sink (eg in the case of some water-cooled heat sinks).
  • a coolant inlet of the heat sink for measuring a temperature of a coolant located in the heat sink.
  • the temperature sensor is preferably disposed within a cooling path of the heat sink, as well as be understood that the temperature sensor is arranged outside behind a cooling path of the heat sink.
  • the process air behind a relative inlet temperature sensor could already transmit at least as much latent heat to the coolant that moisture could condense out of the process air.
  • Such an arrangement can be configured as a heat pump, in which a coolant flows through an evaporator.
  • a so-called condensation dryer in which a coolant, for example tap water, is admitted as required into a heat sink.
  • the moisture determination device is preferably designed and / or programmed for determining the moisture content based on a temporal sequence by means of the temperature sensor measured temperatures.
  • the moisture determination device is designed and / or programmed for determining an inlet-side rise and / or an outlet-side drop in the temperature of the process air or the coolant over the time sequence of measured temperatures of the process air compared to a previous temperature plateau value of the process air or of the coolant.
  • the process air is led to the heat sink with a uniform moisture content, the heat sink draws an even amount of moisture from the process air. Accordingly, the measurable temperatures remain substantially constant.
  • the process air no longer gives only latent but increasingly more sensible heat to the coolant.
  • the temperature difference between the inlet-side temperature and the outlet-side temperature of the heat sink can be detected and used for determining a moisture content (degree of drying). This can preferably be done by reference to a temperature difference plateau value, but also in absolute terms of the temperature difference (eg by exceeding or falling below a temperature difference threshold value).
  • the temperature-plateau value means an average value of a succession of individual successive measured values. Accordingly, threshold values can also be defined whose overshoot or undershoot is used as an indicator for a fall in the process air temperature or an increase in the coolant temperature.
  • the at least one temperature sensor can be arranged for measuring a temperature of the process air on the outlet side of the heat sink, and a further temperature sensor can be arranged for measuring an inlet temperature of the process air on the inlet side of the heat sink.
  • the at least one temperature sensor may be arranged behind a coolant inlet of the heat sink downstream of a coolant inlet of the heat sink according to a further embodiment for measuring a temperature of a flowing through the cooling body coolant or a coolant located in the heat sink and a further temperature sensor may then for measuring an inlet temperature of the coolant inlet side of the Heat sink can be arranged.
  • two measured values of the process air or of the coolant in the region of the inlet or in the region of the outlet of the heat sink are provided according to corresponding embodiments which can also be used in combination, the difference value of which provides a more accurate measure for determining the dehumidifying performance of the heat sink.
  • the heat sink is preferably dimensioned and / or a control device is preferably configured and / or programmed to flow through the heat sink with coolant such that not all of the moisture content is drawn from the process air up to the at least one temperature sensor.
  • the heat sink may be formed in particular by an evaporator of a heat pump.
  • the at least one temperature sensor is preferably a sensor of a heater controller for controlling a process air temperature.
  • a usually already existing temperature sensor can be used particularly advantageously so that not only a humidity sensor can be dispensed with, but even an additional temperature sensor can not even be used in the simplest configuration.
  • An independent solution of the present task is according to the invention also methods for operating a laundry drying device, wherein a moisture content is determined by deducted from a laundry drum process air and the moisture is at least partially condensed out with a heat sink from the process air, the moisture determination by measuring at least one temperature for the heat sink flowing medium or a medium located in the heat sink and by evaluating the measured Temperature is determined in which method the medium is selected from the group containing the process air and a coolant, and in which method the moisture content by measuring an outlet temperature of the medium outlet side of the heat sink and by measuring an inlet temperature of the medium inlet side of the heat sink is determined.
  • a temperature difference of a temperature measured on the outlet side of the heat sink and a temperature measured on the inlet side of the heat sink is preferably formed.
  • the moisture content is preferably determined on the basis of a chronological sequence of measured temperatures or temperature differences.
  • a chronological sequence of measured temperatures or temperature differences in particular, in the case of an inlet-side rise and / or an outlet-side drop in the temperature of the process air over the chronological sequence of measured temperatures or temperature differences of the process air relative to a previous temperature or temperature difference plateau value of the process air, a decreasing moisture content is indicated.
  • a decreasing moisture content of the process air can be indicated.
  • Such a laundry drying apparatus or a method for operating a laundry drying apparatus with such method steps not only offers a reduction in costs through the use of inexpensive temperature sensors instead of moisture sensors. Surprisingly, a longer life of the device due to the higher life of the temperature sensors relative to humidity sensors can be achieved. Another advantage is that such temperature sensors, in contrast to moisture sensors do not need to be cooled, which further simplifies the construction and operating costs. Surprisingly, even greater accuracy is achievable when such indirect measurement is performed over measured temperatures rather than direct moisture measurement.
  • FIG. 1 schematically shows a laundry drying device 1 with a laundry drum 2, which is fluidically coupled to a recirculation or process air duct 3.
  • process air a heated from the circulating air duct 3 into the laundry drum 2 is typically blown by means of a circulating air blower, not shown here.
  • the process air absorbs moisture there by releasing heat and is again sucked out of the laundry drum 2 into the recirculating air duct 3 where it is initially cooled in order to at least partially condense out.
  • a heat sink 4 is coupled into the recirculating air duct 3, which is flowed out of the laundry drum 2 by means of the moist, warm exhaust air.
  • a heater 8 is coupled into the circulating air channel 3. After warming up, the dry-heat process air is blown back to the laundry drum 2.
  • the heat sink is designed as an evaporator 4 and the heater is configured as a condenser 8 of a heat pump 6.
  • the heat pump 6 also has a compressor 5 and a throttle 14, which are interconnected by means of a coolant c leading coolant line 7 as shown and basically known in a circuit.
  • the condenser 8 the refrigerant c is brought from a gaseous to a liquid state, wherein heat is discharged to the process air a.
  • the coolant c is fed into the evaporator 4, in which the coolant c is evaporated.
  • the evaporator 4 removes heat from the process air a, so that moisture condenses out of the process air a.
  • Such condensed moisture is either removed from the device to the outside or collected in a condensate tank, not shown. Possibly. the heat pump or the condenser 8, a further heating, for. B. an electric heater, downstream (not shown).
  • control device 9 is in particular configured and / or programmed to determine a moisture content in the process air a in order to control the further operation depending on the moisture content, in particular a heating of the process air and an operating time of a drying process.
  • the laundry drying device 1 is equipped with a moisture-determining device, to which at least one temperature sensor 11 or preferably two or more temperature sensors 10 - 13 belong here in addition to the appropriately designed and / or programmed control device 9.
  • a moisture-determining device to which at least one temperature sensor 11 or preferably two or more temperature sensors 10 - 13 belong here in addition to the appropriately designed and / or programmed control device 9.
  • a first temperature sensor 10 is coupled into the recirculating air duct 3 on the inlet side (upstream) of the evaporator 4, which senses a temperature Ta1; a second temperature sensor 11 is coupled into the circulating air duct 3 on the outlet side (downstream) of the evaporator 4, which senses a temperature Ta2; If a third temperature sensor 12 is coupled into the coolant line 7 on the inlet side (upstream) of the evaporator 4, which senses a temperature Te1, and a fourth temperature sensor 13 is coupled into the coolant line 7 on the outlet side (downstream) of the evaporator 4, which senses a temperature Te2.
  • the temperatures or corresponding temperature signals are supplied to the control device 9, so as to close by an indirect procedure from a temperature measurement on the moisture content of the process air a.
  • a measurement using only a single temperature sensor namely here the temperature sensor 11 for measuring the temperature Ta2 of the process air a outlet side of the evaporator 4 can be performed.
  • the coolant temperature sensors 12, 13 may be used alternatively or additionally, as described in greater detail below.
  • FIG. 2 shows on the basis of a physiometric diagram, the ratio of moisture content F against a temperature T of the process air a.
  • a dew point of the process air a is shown. The higher the temperature T, the higher is the moisture content F when maximum humidity is assumed.
  • the process air a cools, it loses moisture accordingly, so that part of the moisture content is removed in accordance with the temperature reduction dT.
  • the process air a which is introduced into the laundry drum 2, absorbs an amount of moisture, ideally a moisture amount up to the saturation limit, according to FIG. 2 , Accordingly, the process air a leaves the laundry drum 2 with a high moisture content.
  • This process air a with the high moisture content is led to the evaporator 4 of the heat pump 6 and cooled there.
  • water or moisture must condense out of the process air a as soon as it reaches the dew point and accordingly there is saturation with the moisture.
  • the exchanged heat consists of latent heat to condense the water and sensitive heat to cool the temperature of the process air a or to heat the coolant c in the evaporator 4.
  • the latent heat in the evaporator 4 is much higher than the sensible heat.
  • the percentage of sensible heat increases relative to the proportion of latent heat.
  • the process air is warmed up over time. Accordingly, the moisture content of the process air increases with increasing time until an equilibrium is established and a substantially constant temperature can be measured at various positions of the circulating air channel 3 until the laundry to be dried dries and delivers less moisture to the process air a. If the process is stable and a constant air flow of the process air a and a constant heat exchange in the evaporator 4 are achieved, the temperature exchange of the process air a in the evaporator 4 is higher, while the sensible heat is high or increases, until finally the moisture or the moisture content in the process air a at the outlet of the laundry drum 2 decreases.
  • control device 9 can close the moisture content of the process air a and control the drying cycle of the cooling drying device 1 in a coordinated manner.
  • the control device 9 with the only one temperature sensor 11 preferably checks to what extent a temperature Ta2 (t) of the process air a develops over time and can be sufficiently dried, for example, from exceeding a previously time-averaged plateau value to determine a certain amount. Namely, when the moisture content decreases after a time of conditions holding the values constant, less latent heat is absorbed by the process air a in the evaporator 4 and more sensible heat is absorbed. Accordingly, the temperature of the process air in the evaporator 4 then decreases more and more.
  • the control device 9 it can be detected by suitable programming that the temperature Ta2 (t) of the process air a on the outlet side of the evaporator 4 decreases over time and thus the moisture content of the process air a decreases.
  • this effect can not be determined so precisely, since process and environmental changes are not easily compensated.
  • FIG. 3 shows an example of a drying cycle in a laundry drying apparatus 1 according to FIG. 1 , wherein temperature profiles of the process air a are shown at different points in the air duct 3.
  • the respective temperature T is plotted over the course of time t. Since 2 temperature sensors were used at the respective measuring points for experimental purposes, 2 measured curves for the respective temperature value are correspondingly shown in a single position. The highest temperature values are reached by curves k1 at the inlet of the laundry drum 2 and the outlet of the condenser 8.
  • the process air a is still relatively cold during the first 40 to 50 minutes, for example, and is passed through the condenser 8, and possibly another, Heating device, not shown, increasingly heated until a plateau value is reached in the region of a plateau p under constant operating conditions.
  • the plateau p extends over a period of about 40 to 50 minutes to over 90 minutes and corresponds to the length of time during which about constant conditions prevail in the laundry dryer, since a uniform amount of moisture is released from the laundry to the process air a and a uniform amount of moisture in the evaporator 4 is withdrawn from the process air a.
  • the laundry absorbs correspondingly more heat, so that the temperature k1 at the entrance of the laundry drum 2 gradually decreases until the drying cycle is completed.
  • the temperature Ta1 of the process air a is shown on the inlet side of the evaporator 4 or on the outlet side of the laundry drum 2. Until the constant operating conditions or the plateau p are reached, this temperature Ta1 gradually increases. At the plateau p it reaches a more or less constant temperature plateau value Ta1p. At the end of the plateau p or in particular behind the plateau p, the temperature Ta1 increases with increasing degree of drying of the clothing the laundry drum 2 and correspondingly less moisture absorption of the process air a gradually increases.
  • the temperature plateau Ta1p is in the example shown in a range between just under 40 ° C and 5 ° C.
  • threshold values surrounding such plateau values are preferably determined and considered by the control device 9 in order to take account of these natural conditions.
  • the temperature Ta2 of the process air a measured at the evaporator 4 on the outlet side.
  • the process air a is strongly cooled by the evaporator 4 and takes only a few minutes continuously until reaching the plateau p temperature.
  • a temperature plateau Ta2p this temperature Ta2 outlet side of the evaporator 4 is about 25 - 30 ° C. If the laundry increasingly emits less moisture to the process air a, the process air a is increasingly cooled by the evaporator 4 again, so that the temperature Ta2 of the process air a on the outlet side of the evaporator 4 after the end of the plateau p falls again or assumes lower values ,
  • an analysis of both the inlet-side and the outlet-side temperatures Ta1 and Ta1 of the process air a at the evaporator 4 or heat sink 4 is preferably carried out.
  • the controller 9 much more prominent than the analysis of the individual temporal temperature curves Ta1 (t), Ta2 (t) can be evaluated according to their difference.
  • a temperature difference dT1 between the inlet and outlet side temperatures Ta2-Ta1 is significantly lower than a temperature difference dT2 between these temperature values after the plateau p.
  • the two temperature differences dT1, dT2 are illustrated by arrows in the diagram.
  • FIG. 4 illustrates such a situation. Accordingly, a laundry drying apparatus with a cooling body or evaporator 4 that is as effective as possible is preferably able to recognize the detection of the temperature variations over time or the temperature differences over time as well as possible.
  • FIG. 4 are the same reference numerals as in FIG. 3 so that with regard to explanations to the explanations to FIG. 3 is referenced. Visible is unlike FIG. 3 in that the temperature differences are less pronounced and that the temperatures in the plateau region are slightly different from those according to FIG. 3 differ.
  • a heat exchange efficiency in the heat pump also depends on the relative moisture content of the process air a conducted through the evaporator 4.
  • the process air a with a higher moisture content has a better heat exchange efficiency.
  • the heat exchanger or heat pump has a decreasing heat exchange performance.
  • heat exchange efficiency can be determined. This efficiency changes according to the above statements during the drying cycle.
  • the temperature sensors 12, 13, which are used for detecting the temperature Te1 or Te2 of the coolant c on the inlet side or outlet side of the evaporator 4, spaced from each other at the tube of the evaporator 4 or a corresponding connecting tube spaced from each other, wherein the distance is preferably less is than the length of the effective area of the tube of the evaporator 4.
  • another equivalent usable heat sink can be considered.
  • the heat exchange or its efficiency deteriorates, so that the coolant takes longer, d. H. a longer distance must flow through the evaporator 4 to completely evaporate. Accordingly, the temperature difference or the temperature difference between a temperature sensor arranged on the inlet side and a specific point of a temperature sensor 13, which is arranged at a distance on the outlet side or from the inlet-side temperature sensor 12, decreases. This can be taken as a measure of the moisture content of the process air a or of the laundry still to be dried.
  • a number of two temperature sensors 12, 13 are arranged on the cooling circuit, since an in FIG. 5 sketched difference formation dTc1, DTc2 of the temperatures Te2 - Te1 of the coolant c on the outlet side or inlet side of the evaporator 4 has a higher significance than a single over the time t considered temperature value.
  • An application of two temperature sensors is still much cheaper in terms of design and cost than providing a humidity directly measuring humidity sensor. According to a less preferred embodiment, however, the measurement with only a single temperature sensor 13 in the region of the evaporator 4 or the condenser 8 can be implemented.
  • FIG. 5 shows an example of a diagram comparable to the diagrams FIG. 3 and FIG. 4 , However, temperature profiles of the temperature T of the coolant c over the time t are shown. Recognizable are again plateaus p in a range in which constant operating conditions are set.
  • the individual temperature profiles are increasing or decreasing.
  • the temperature difference dTc2 on the outlet side is again clearly visible on the inlet side compared to the temperature difference dTc1 on the inlet side.
  • the criterion for a drying laundry is not an increase in the temperature differences dTc1, dTc2 but a decrease in the temperature differences dTc1, dTc2.
  • a temperature Te1 of the coolant c on the inlet side of the evaporator is with the first of these in FIG. 1 sketched temperature sensors 12, which detects the coolant temperature on the inlet side or in front of the evaporator 4.
  • the second of these temperature sensors 13 for determining the temperature differences dTc1, dTc2 is arranged on a three-quarter length of the evaporator 4 or its effective evaporator length.
  • exemplary temperatures shown are: a temperature Cp_OUT measured at the outlet of the compressor 8, temperatures Cd_3 / 4, Cd_7 / 8 at three quarters and seven-eighths of the length of the condenser and a temperature Cd_OUT at the outlet of the condenser 8.
  • a temperature Cp_OUT measured at the outlet of the compressor 8 temperatures Cd_3 / 4, Cd_7 / 8 at three quarters and seven-eighths of the length of the condenser and a temperature Cd_OUT at the outlet of the condenser 8.
  • Cd_air_OUT at the outlet of the condenser
  • a temperature Cd_IN at the inlet of the compressor
  • Ev_OUT outlet side temperature
  • ambient temperature K2 ambient temperature
  • a detection of the degree of drying by means of temperature sensing is also suitable for exhaust air dryer.
  • the method is also applicable to both separate tumble drier and washer-dryer.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP08865120A 2007-12-20 2008-12-05 Wäschetrocknungsgerät mit einer feuchtigkeitsbestimmungseinrichtung und verfahren zum betreiben eines wäschetrocknungsgeräts Revoked EP2227585B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007061519A DE102007061519A1 (de) 2007-12-20 2007-12-20 Wäschetrocknungsgerät mit einer Feuchtigkeitsbestimmungseinrichtung und Ver-fahren zum Betreiben eines Wäschetrocknungsgeräts
PCT/EP2008/066865 WO2009080468A1 (de) 2007-12-20 2008-12-05 Wäschetrocknungsgerät mit einer feuchtigkeitsbestimmungseinrichtung und verfahren zum betreiben eines wäschetrocknungsgeräts

Publications (2)

Publication Number Publication Date
EP2227585A1 EP2227585A1 (de) 2010-09-15
EP2227585B1 true EP2227585B1 (de) 2011-06-01

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Application Number Title Priority Date Filing Date
EP08865120A Revoked EP2227585B1 (de) 2007-12-20 2008-12-05 Wäschetrocknungsgerät mit einer feuchtigkeitsbestimmungseinrichtung und verfahren zum betreiben eines wäschetrocknungsgeräts

Country Status (7)

Country Link
US (1) US20100263226A1 (ru)
EP (1) EP2227585B1 (ru)
CN (1) CN101903587B (ru)
AT (1) ATE511569T1 (ru)
DE (1) DE102007061519A1 (ru)
EA (1) EA018159B1 (ru)
WO (1) WO2009080468A1 (ru)

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DE102012216397A1 (de) 2012-09-14 2014-03-20 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner mit Ermittlung der Beladung sowie Verfahren zu seinem Betrieb
DE102015201831A1 (de) 2015-02-03 2016-08-04 BSH Hausgeräte GmbH Verfahren zur Ermittlung von Wäscheeigenschaften und hierfür geeigneter Kondensationstrockner
EP3255204A1 (de) 2016-06-10 2017-12-13 BSH Hausgeräte GmbH Verfahren zur ermittlung der endrestfeuchte in einem kondensationstrockner sowie hierfür geeigneter kondensationstrockner
DE102022204025A1 (de) 2022-04-26 2023-10-26 BSH Hausgeräte GmbH Verfahren zur Ermittlung der Endrestfeuchte in einem Wärmepumpentrockner sowie hierfür geeigneter Wärmepumpentrockner

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DE102007052839A1 (de) * 2007-11-06 2009-05-07 BSH Bosch und Siemens Hausgeräte GmbH Trockner mit Wärmepumpenkreis
US8474152B2 (en) * 2010-10-08 2013-07-02 Whirlpool Corporation Method to detect an empty load in a clothes dryer
US8468717B2 (en) * 2010-10-08 2013-06-25 Whirlpool Corporation Method to detect an end of cycle in a clothes dryer
JP5947103B2 (ja) * 2012-05-16 2016-07-06 シャープ株式会社 衣類乾燥装置
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DE102007061519A1 (de) 2009-06-25
EA201070749A1 (ru) 2011-02-28
EA018159B1 (ru) 2013-05-30
ATE511569T1 (de) 2011-06-15
CN101903587B (zh) 2013-02-06
CN101903587A (zh) 2010-12-01
US20100263226A1 (en) 2010-10-21
WO2009080468A1 (de) 2009-07-02

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