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EP2333149B1 - Wäschetrockner mit Umgebungstemperatursensor - Google Patents

Wäschetrockner mit Umgebungstemperatursensor Download PDF

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Publication number
EP2333149B1
EP2333149B1 EP10014813.9A EP10014813A EP2333149B1 EP 2333149 B1 EP2333149 B1 EP 2333149B1 EP 10014813 A EP10014813 A EP 10014813A EP 2333149 B1 EP2333149 B1 EP 2333149B1
Authority
EP
European Patent Office
Prior art keywords
temperature
laundry dryer
ambient temperature
heat pump
controller
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.)
Active
Application number
EP10014813.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2333149A1 (de
Inventor
Jürgen Kübler
André Widmer
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.)
V-Zug AG
Original Assignee
V-Zug AG
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 V-Zug AG filed Critical V-Zug AG
Priority to DK10014813.9T priority Critical patent/DK2333149T3/da
Priority to PL10014813T priority patent/PL2333149T3/pl
Priority to SI201030495T priority patent/SI2333149T1/sl
Priority to EP10014813.9A priority patent/EP2333149B1/de
Publication of EP2333149A1 publication Critical patent/EP2333149A1/de
Priority to AU2011253568A priority patent/AU2011253568B2/en
Priority to CN201110372029.9A priority patent/CN102560990B/zh
Application granted granted Critical
Publication of EP2333149B1 publication Critical patent/EP2333149B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/22—Lint collecting 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
    • 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
    • D06F2103/32—Temperature
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/38—Time, e.g. duration
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/42—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to filters or 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/50—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to heat pumps, e.g. pressure or flow rate
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/26—Heat pumps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • 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
    • 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
    • D06F58/46—Control of the operating time

Definitions

  • the invention relates to a tumble dryer with a drum for receiving laundry to be dried, with a process air circuit for drying the laundry in the drum and with a controller. Furthermore, the invention relates to a method for operating such a tumble dryer.
  • a tumble dryer in which the laundry is dried in a drum. Process air is passed through the drum in a process air cycle, wherein a heat pump is provided for drying and heating the process air. Furthermore, the device has a cooling fan to cool a part of the heat pump with ambient air and thus to extract excess heat from the device. The device is designed to cool the cooling fan depending on the temperature of the medium of the heat pump.
  • EP 512 940 describes a device in which the degree of soiling of the lint filter is determined based on the frequency of temperature control cycles of the system.
  • DE 199 39 271 describes a method for determining the drying time in a tumble dryer, in which the ambient temperature is taken into account.
  • the controller of the device is configured to determine the ambient temperature with a temperature sensor and to control the drying process and / or a display of the device depending on the ambient temperature.
  • the ambient temperature can be used to differentially control the heat pump.
  • coolant may be provided to cool at least a portion of the process air cycle and / or the heat pump with ambient air, as shown in FIG EP 2 006 437 or EP 1 156 149 is described.
  • the coolant can now be controlled depending on the ambient temperature, in particular by being operated at higher ambient temperature stronger and / or longer than at cooler ambient temperature.
  • the knowledge of the ambient temperature is used to more reliably determine the degree of soiling of the lint filter of the device.
  • known methods measure the duration of the drying process, for example the time it takes for the water content in the laundry or in the process air to drop below a certain level, whereby a long process time can indicate a high degree of soiling.
  • a long process time may also be due to a high ambient temperature.
  • Other methods determine the number of superheat cycles of the compressor of the heat pump of the appliance as this number increases as the lint filter loses its permeability. Even in this case, however, this can Number also increase because the ambient temperature is high, without the lint filter would be very dirty. Therefore, considering the ambient temperature in both cases allows a better detection of the filter contamination.
  • the knowledge of the ambient temperature can be used to better estimate this process time as the process time usually increases with increasing ambient temperature.
  • Knowledge of the ambient temperature may also be useful for other applications, e.g. for the calculation of an estimated energy consumption, for the determination of an optimal process temperature or for the determination of the duration of individual process steps.
  • FIG. 1 shows a block diagram of the most important components of a tumble dryer.
  • the device after Fig. 1 has a drum 1 for receiving the laundry to be dried. It is provided a process air cycle (which in Fig. 1 is shown by solid lines), in which heated process air passed through the drum 1 and a lint filter 12, then cooled and then reheated and fed back into the drum 1. By cooling the process air it is dried in a known manner.
  • a blower 10 serves to pump over the process air.
  • a heat pump cycle is provided (the path of the pumped by the heat pump cycle medium in Fig. 1 shown with dotted lines).
  • the medium is conveyed by a compressor 2 to a condenser 3, from there to an additional heat exchanger 4, then via a throttle body 5, for example in the form of capillaries or an expansion valve, to an evaporator 6 and then via an optional heater 9 back to the compressor 2.
  • the evaporator 6 serves to cool the process air and to extract water in this way, while the condenser 3 serves to reheat the process air so that they can absorb new water.
  • a cooling fan 7 which serves to cool at least a portion of the heat pump and / or the process circuit with ambient air. Im in Fig. 1 shown embodiment is performed with the cooling fan 7 ambient air over the additional heat exchanger 4 in order to cool this.
  • the cooling fan 7 and the additional heat exchanger 4 serve to extract heat from the heat pump cycle and thus the entire system and to deliver this to the ambient air.
  • the amount of heat extracted is controlled depending on the temperature in the heat pump cycle (and / or depending on the temperature in the process air cycle), eg, by operating the cooling fan 7 at a higher power as the temperature rises.
  • the function and operation of the additional heat exchanger are described in detail in EP 1 884 586 and EP 2 006 437 described, but the control of the cooling fan 7 in the manner described below is additionally dependent on the ambient temperature.
  • a controller 8 of the device evaluates the signals of the various temperature sensors and any other sensors and controls the device depending on the measured signals and the inputs of the user.
  • the device has a control panel 15.
  • the controller 8 may drive a display 16 which may be used by the user e.g. Indicates operating parameters and / or an expected process duration for the drying process.
  • the device is preferably substantially with the example in EP 1 884 586 or EP 2 006 437 controlled method described.
  • the knowledge of the ambient temperature Tu allows some improvements, eg with regard to efficiency, reliability and user information. Some examples are described in more detail below.
  • the controller 8 preferably controls the cooling fan 7 as a function of the ambient temperature Tu, and in particular operates it at a higher ambient temperature Tu stronger (ie at a higher speed) and / or longer than at a lower ambient temperature Tu.
  • the controller 8 preferably controls the cooling fan 7 as a function of the ambient temperature Tu, and in particular operates it at a higher ambient temperature Tu stronger (ie at a higher speed) and / or longer than at a lower ambient temperature Tu.
  • the values in the left column of the table are selected lower by 1 or 2 ° C at an ambient temperature above 30 ° C.
  • a corresponding control can also be used if the cooling fan 7 does not cool the heat pump, but (via an air-to-air heat exchanger) directly the air in the process air circuit.
  • the cooling means are formed by the cooling fan 7, which blows ambient air against a heat exchanger with which the heat pump medium and / or the process air can be cooled.
  • the coolant may also include a controllable opening on the process air circuit, which may be partially or completely opened by the controller 8 to replace process air in the process air circuit by ambient air, as in EP 1 156 149 is described. Also in this way heat can be withdrawn from the system.
  • the opening is preferably controlled depending on the ambient temperature Tu so that at high ambient temperature, a stronger exchange of air takes place than at low ambient temperature.
  • the knowledge ambient temperature Tu will be used according to the invention to more reliably detect contamination of the lint filter 12.
  • the duration of the process is a suitable parameter in particular if this duration is determined by the moisture remaining in the laundry or the process air.
  • the drum 1 be equipped with suitable sensors for measuring the electrical conductivity of the laundry.
  • the above-mentioned temperature parameter is, for example, the temperature at a suitable point in the process air cycle or in the heat pump.
  • the temperature parameter may also be the number of overheating cycles of the heat pump of the appliance during a drying process.
  • the number of such overheating cycles increases with increasing contamination of the filter 12, but also with increasing ambient temperature.
  • an inadmissible contamination of the lint filter 12 can be inferred if at least four overheating cycles are detected during a drying process.
  • an impermissible contamination is only concluded if at least six overheating cycles take place; at Tu> 30 ° C, at least eight overheating cycles are required.
  • the result of the determination of lint filter contamination may be e.g. be displayed on the display 16, for example in the form of a request to clean the lint filter 12.
  • the knowledge ambient temperature Tu can also be used to more accurately determine the anticipated process duration, to then determine this, for example. to display on the display 16.
  • the controller 8 is preferably configured to calculate the anticipated process duration depending on the ambient temperature Tu.
  • a table with correction factors must be stored as a function of the ambient temperature Tu, with which the conventionally determined process duration is to be multiplied.
  • the correction factors can be determined, for example, by calibration measurements of the device manufacturer.
  • the knowledge of the ambient temperature Tu can additionally or alternatively also be used for other purposes, e.g. for the calculation of an estimated energy consumption, for the determination of an optimal process temperature or for the determination of the duration of individual process steps.
  • the ambient temperature Tu may also be used to decide if and how long the device should be heated at the beginning of the drying process, e.g. with the heater 9.
  • the knowledge of the ambient temperature can also be used to determine the final degree of dryness of the laundry.
  • final degree of dryness of the laundry is meant the degree of dryness (i.e., the limit moisture content) at which the drying process is terminated.
  • the controller 8 is preferably configured to adjust the final degree of dryness as a function of ambient temperature.
  • the controller 8 is preferably designed such that it adapts the predetermined after-dry duration as a function of the ambient temperature.
  • night-time drying is meant a period of time during which the laundry, although the moisture sensor already detects dry laundry, is dried even further. This discrepancy arises, for example, because of thick laundry items or pillows, which are dry on the outside, but still have moisture inside.
  • the after-dry duration is based on practical experience.
  • the ambient temperature can be measured with a temperature sensor 20 which is in good thermal contact with the environment of the device, e.g. by being arranged in thermal contact with an outer wall of the tumble dryer.
  • the temperature sensor 20 may also be arranged in the intake region of the cooling fan 7, where fresh ambient air is sucked in.
  • the temperature sensor 20 may also be placed directly on the controller 8, i. on a printed circuit board of the controller 8.
  • the temperature sensor 20 can also be arranged on the process air circuit and / or on the heat pump and be formed, for example, by one of the temperature sensors 21 or 22.
  • the controller is configured to measure the ambient temperature Tu with the temperature sensor in a rest period of the tumble dryer, ie in the time between two drying processes.
  • the time interval from the preceding drying process is so large (in particular several hours) that the tumble dryer is in thermal equilibrium with the environment.
  • a measurement is basically also possible at an earlier point in time after a drying process, by estimating the ambient temperature from the current temperature at the temperature sensor and the cooling rate.
  • the ambient temperature can be measured with only one temperature sensor (a) between the drying processes and (b) during a drying process a process temperature in the tumble dryer (for example a temperature in the heat pump or in the process air cycle).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Drying Of Solid Materials (AREA)
EP10014813.9A 2010-11-22 2010-11-22 Wäschetrockner mit Umgebungstemperatursensor Active EP2333149B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DK10014813.9T DK2333149T3 (da) 2010-11-22 2010-11-22 Tørretumbler med omgivelsestemperatursensor
PL10014813T PL2333149T3 (pl) 2010-11-22 2010-11-22 Suszarka do bielizny z czujnikiem temperatury otoczenia
SI201030495T SI2333149T1 (sl) 2010-11-22 2010-11-22 Sušilnik perila z zaznavalom temperature okolice
EP10014813.9A EP2333149B1 (de) 2010-11-22 2010-11-22 Wäschetrockner mit Umgebungstemperatursensor
AU2011253568A AU2011253568B2 (en) 2010-11-22 2011-11-18 Laundry dryer with environmental temperature sensor
CN201110372029.9A CN102560990B (zh) 2010-11-22 2011-11-22 具有环境温度传感器的干衣机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10014813.9A EP2333149B1 (de) 2010-11-22 2010-11-22 Wäschetrockner mit Umgebungstemperatursensor

Publications (2)

Publication Number Publication Date
EP2333149A1 EP2333149A1 (de) 2011-06-15
EP2333149B1 true EP2333149B1 (de) 2013-11-06

Family

ID=43828232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10014813.9A Active EP2333149B1 (de) 2010-11-22 2010-11-22 Wäschetrockner mit Umgebungstemperatursensor

Country Status (6)

Country Link
EP (1) EP2333149B1 (zh)
CN (1) CN102560990B (zh)
AU (1) AU2011253568B2 (zh)
DK (1) DK2333149T3 (zh)
PL (1) PL2333149T3 (zh)
SI (1) SI2333149T1 (zh)

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US11603624B2 (en) 2020-12-10 2023-03-14 Haier Us Appliance Solutions, Inc. Lint filter clogging detection in a dryer appliance based on airflow
US11846064B2 (en) 2021-01-21 2023-12-19 Haier Us Appliance Solutions, Inc. Lint filter clogging detection in a dryer appliance using compressor temperature and referigerant mass flow

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EP2927366B1 (en) * 2014-03-31 2020-09-30 Electrolux Appliances Aktiebolag Laundry treatment apparatus and method of operation
EP2927365B1 (en) 2014-03-31 2016-10-19 Electrolux Appliances Aktiebolag Laundry drying method and apparatus for implementing same
PL3059342T3 (pl) 2015-02-20 2023-03-13 Electrolux Appliances Aktiebolag Sposób sterowania urządzeniem do obróbki prania stosującego informacje o stanie sterowania
KR101943361B1 (ko) * 2018-04-10 2019-04-17 엘지전자 주식회사 건조기의 제어방법
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CN110359255A (zh) * 2018-04-11 2019-10-22 青岛海尔滚筒洗衣机有限公司 用于衣物处理设备的控制方法和衣物处理设备
JP7116938B2 (ja) * 2018-04-11 2022-08-12 青島海爾▲滾▼筒洗衣机有限公司 衣類処理設備用の制御方法及び衣類処理設備
JP7104173B2 (ja) * 2018-04-11 2022-07-20 青島海爾▲滾▼筒洗衣机有限公司 衣類処理設備用の制御方法及び衣類処理設備
TR202010178A1 (tr) 2020-06-29 2022-01-21 Arçeli̇k Anoni̇m Şi̇rketi̇ Fi̇ltre i̇çeren bi̇r çamaşir kurutucu
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11603624B2 (en) 2020-12-10 2023-03-14 Haier Us Appliance Solutions, Inc. Lint filter clogging detection in a dryer appliance based on airflow
US11846064B2 (en) 2021-01-21 2023-12-19 Haier Us Appliance Solutions, Inc. Lint filter clogging detection in a dryer appliance using compressor temperature and referigerant mass flow

Also Published As

Publication number Publication date
SI2333149T1 (sl) 2014-02-28
DK2333149T3 (da) 2014-01-06
CN102560990A (zh) 2012-07-11
CN102560990B (zh) 2015-11-04
AU2011253568B2 (en) 2016-07-14
EP2333149A1 (de) 2011-06-15
AU2011253568A1 (en) 2012-06-07
PL2333149T3 (pl) 2014-04-30

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