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WO2014067797A2 - Sèche-linge doté d'une pompe à chaleur - Google Patents

Sèche-linge doté d'une pompe à chaleur Download PDF

Info

Publication number
WO2014067797A2
WO2014067797A2 PCT/EP2013/071821 EP2013071821W WO2014067797A2 WO 2014067797 A2 WO2014067797 A2 WO 2014067797A2 EP 2013071821 W EP2013071821 W EP 2013071821W WO 2014067797 A2 WO2014067797 A2 WO 2014067797A2
Authority
WO
WIPO (PCT)
Prior art keywords
heat pump
temperature
laundry
fan
laundry drying
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.)
Ceased
Application number
PCT/EP2013/071821
Other languages
German (de)
English (en)
Other versions
WO2014067797A3 (fr
Inventor
Frank Höfler
Uwe-Jens Krausch
Andreas Stolze
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of WO2014067797A2 publication Critical patent/WO2014067797A2/fr
Publication of WO2014067797A3 publication Critical patent/WO2014067797A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 
    • D06F58/206—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
    • 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
    • D06F2105/16—Air properties
    • D06F2105/24—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
    • 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
    • D06F2105/30—Blowers
    • 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

Definitions

  • the invention relates to a laundry drying apparatus, comprising a fan for moving process air, a heat pump and a temperature measuring device.
  • Dryers which use a compressor heat pump for cooling and reheating a process air.
  • a compressor heat pump By means of the process air to be dried laundry is dried, often by the process air through a living room for the laundry, e.g. a rotating laundry drum, is passed through and absorbs moisture from the laundry.
  • a condenser of the compressor heat pump By a condenser of the compressor heat pump, the process air is heated before being introduced into the recreation room and condensed by an evaporator after passing through the common room. This allows the heat pump to return much of the energy to the process.
  • the heat pump is driven by a compressor or compressor whose pumping power is also supplied to the process.
  • a compressor heat pump The operation of a compressor heat pump is basically well known, e.g. from the document WO 2005/032322 A2. It leads to an accumulation of heat in the process, i. that as the process time progresses, a heat surplus in the system increases.
  • a temperature of the various components of the heat pump, including the coolant should not be excessive.
  • WO 2005/032322 A2 discloses a cooler for the coolant of the heat pump, which is controlled by a temperature of the process air.
  • This compressor heat pump has a cooling fan for cooling the compressor of the heat pump, which is controllable via a temperature of the coolant.
  • the compressor is a controllable compressor.
  • EP 2 468 949 A2 discloses a tumble dryer with a process air circuit, a heat pump and an additional heat exchanger arranged in the process air circuit.
  • the additional heat exchanger is blown by a blower.
  • a turntable Number of blower which in turn determines a cooling capacity of the additional heat exchanger, is adjusted depending on a temperature measured at the heat pump to dissipate excess heat from the tumble dryer.
  • the document DE 10 2007 017 587 A1 discloses a clothes dryer without a heat pump and a control method therefor, by which energy saving and maintaining the optimum temperature within a drying drum are made possible in such a way that the temperature of a heater by varying the speed of a Dryer used in the tumble dryer is diversified.
  • the clothes dryer is provided with: a drying drum for receiving an object to be dried inside; a blower fan provided to allow air to flow through the drying drum; a heater for heating air supplied to the drying drum; a temperature sensor for detecting the temperature inside the drying drum; a drive motor for generating a driving force for rotating the drying drum and the blower fan; and a control unit for controlling the rotational speed (revolutions per minute) of the drive motor so as to vary in accordance with the detection result of the temperature sensor.
  • a method for controlling the operation of an automatic laundry dryer according to a drying cycle comprising a drying chamber for receiving laundry articles, and an air flow system comprising a motor and a fan operated by the motor to supply air through the Drying chamber, wherein the engine is a variable speed motor, the method comprising: determining the airflow through the airflow system, comparing the determined airflow with a desired airflow, adjusting the engine speed so that the airflow through the airflow system is at the desired value Air flow, wherein adjusting the engine speed comprises setting a controlled engine speed as the engine speed and operating the engine at the controlled engine speed.
  • Adjusting the engine speed may include changing the desired airflow during the dry cycle and adjusting the engine speed to obtain the changed desired airflow, wherein changing the engine speed Desired air flow in response to the air temperature in the airflow system, to the dryness of a laundry load in the dryer, to the mass of the laundry load in the dryer or in response to the volume of the laundry load in the dryer.
  • Determining the airflow may include detecting an operating characteristic of a fan motor in the airflow system, wherein the sensed operating characteristic includes at least one of the engine speed, the air temperature, the motor current, and the engine torque. It is the object of the present invention to at least partially overcome the disadvantages of the prior art, and in particular to provide an improved way of protecting the compressor / compressor from overheating.
  • a laundry drying apparatus comprising a fan for moving process air, a heat pump and a temperature measuring device.
  • This laundry drying device is set up to set a ventilation performance of the fan as a function of at least one temperature sensed by the temperature measuring device on the heat pump.
  • the laundry drying device can be, for example, a tumble dryer or a laundry drier (combined laundry washing / drying device).
  • the laundry dryer may be a recirculating air dryer with a closed or circulating process air duct.
  • the laundry dryer may alternatively be an exhaust air dryer with an open process air duct.
  • the laundry drying apparatus is in particular a household appliance.
  • the fan can be a fan or a blower ('process air blower').
  • the temperature measuring device may in particular have one or more sensors for sensing a respective temperature.
  • the temperature measuring device may also have one or more electrical or electronic components for signal processing (eg an analog / digital converter) and / or for the evaluation of measured data (eg measuring electronics).
  • the signal processing and / or evaluation can also be carried out in another unit of the laundry dryer.
  • the temperature measuring device may be coupled to a control device of the laundry drying device or may at least partially represent a functional part of the control device.
  • the temperature measuring device next to the at least one sensor may have a signal amplifier, analog / digital converter, etc.
  • the laundry drying apparatus is also adapted to set a ventilation performance of the fan in response to at least one sensed by the temperature measuring device to the heat pump temperature.
  • a higher volume flow of the process air is effected, which in turn increases the heat output of the process air is achieved, for example, to the laundry to be dried.
  • heat can be dissipated from the heat pump more intensively, as a result of which its overheating, in particular of its drive, can be avoided.
  • At least one sensed temperature by means of the temperature measuring device can be understood in particular to be a sensed temperature value, a plurality of sensed temperature values and / or a combination of a plurality of sensed temperature values, for example a temperature difference.
  • the temperature measuring device may have one or more temperature sensors or sensors which are arranged on or in the heat pump in order in each case to sense a temperature associated with the heat pump.
  • the ventilation performance of the fan can be adjusted for example by its speed.
  • the adjustment of the ventilation line can be made for example by means of the control unit.
  • the control unit may for example be present as a central control board in the laundry dryer.
  • the laundry drying device is set up to sense the temperature of a drive of the heat pump by means of the temperature measuring device.
  • the heat pump is a compressor heat pump and the drive is a compressor.
  • the compressor may in particular be controllable.
  • the heat pump may be, for example, a Stirling or a Vuilleumier heat pump.
  • the laundry drying device is adapted to determine by means of the temperature measuring device, a temperature difference of a coolant in front of and behind at least one functional component of the heat pump.
  • a functional component of a compressor heat pump may be an evaporator, a condenser, a compressor and / or a throttle. This also provides information about an imminent or overheating that has already occurred.
  • the fan is a speed-controlled fan and can be driven by means of a dedicated drive motor (two-motor principle).
  • This drive motor is therefore provided exclusively for the operation of the fan.
  • Another engine may be provided, for example, to operate a rotary laundry drum.
  • the fan drive motor may be a continuously variable BLDC motor or PMS motor.
  • This embodiment allows a particularly wide speed range.
  • a laundry drum and the fan by means of a common drive motor can be driven (single-motor principle). In this case, in particular, the laundry drum may be driven directly by the drive motor, while a translation is present between the one drive motor and the fan wheel.
  • a ratio of the order of 1:50 is present, that is, one revolution of the laundry drum corresponds to fifty revolutions of the fan.
  • a variation of the rotational speed of the drive motor which practically does not influence the movement of the laundry in the laundry drum can, due to the high ratio, bring about a speed of the fan wheel which is sufficient for controlling the heat removal from the heat pump.
  • This embodiment allows a particularly inexpensive speed-controlled ventilation.
  • the laundry drying apparatus is adapted to operate at least one further component of the laundry drying apparatus in dependence on at least one temperature determined by the temperature measuring device, e.g. a component of the heat pump, e.g. a speed of a speed controllable compressor and / or a flow area of the throttle, and / or at least one component outside the heat pump, e.g. a power of additional heating.
  • a component of the heat pump e.g. a speed of a speed controllable compressor and / or a flow area of the throttle
  • at least one component outside the heat pump e.g. a power of additional heating.
  • the object is also achieved by a method for operating a laundry dryer with a fan for moving process air and a heat pump, wherein a ventilation performance of the fan is set in dependence on at least one temperature of the heat pump.
  • the method can be configured analogously to the laundry drying device and gives the same advantages.
  • the Fig. Shows a sketch of a laundry drying apparatus according to a first embodiment in the form of a circulating clothes dryer 1.
  • the circulating clothes dryer 1 is a front loader with a rotatable laundry drum 2 as a laundry treatment room.
  • the Laundry drum 2 is connected on two sides to a circulating process air duct 3, so that process air L can flow through the process air duct 3 and the laundry drum 2.
  • process air L is a fan in the form of a process air blower 4 with a process air promoting fan 5 and the fan 5 driving, speed-controllable drive motor 6, such as a continuously variable BLDC motor, available.
  • the circulating laundry dryer has a compression heat pump 7 to 10 with a condenser or condenser 7, an evaporator 8, a compressor or compressor 9 serving as drive and a relaxation device in the form of an expansion valve 10 on.
  • the condenser 7 is arranged on a portion of the process air duct 3 arranged upstream of the laundry drum 2 (upstream or downstream of the process air blower 4 in the flow direction), and the evaporator 8 is arranged on a portion of the process air duct 3 arranged downstream of the laundry drum 2. Consequently, in the direction of flow of the process air L, the sequence follows: laundry drum 2-evaporator 8-condenser 7.
  • the process air blower 4 can in principle be arranged at any point in the process air duct 3.
  • An efficiency of the heat pump 7 to 10 depends inter alia on a temperature of the compressor 9. This increases due to the operation of the heat pump 7 to 10 too much, an operating point shifts beyond its optimum, and an efficiency decreases. If an overheating temperature is exceeded, there is even a risk of damage to the compressor 9, which is then switched off. This in turn prolongs a drying time and also reduces the efficiency.
  • the circulating air dryer 1 has a temperature measuring device in the form of a temperature sensor 11, which is communicatively coupled to a control device 12.
  • the control device 12 is also set up to control or regulate a rotational speed D of the (speed-controllable) drive motor 6 and thus of the fan wheel 5, as a result of which a ventilation or delivery rate can be set.
  • the control device 12 is in particular configured to set the rotational speed D as a function of a temperature T sensed by the temperature sensor 11. In particular, the rotational speed D and thus the ventilation power can be increased in order to reduce the temperature T of the compressor 9.
  • the laundry drum 2 and the process air fan 4 or its associated fan 5 can be driven alternatively by means of a common drive motor.
  • Stirling or Vuilleumier heat pumps can also be used.
  • the temperature measuring device may have two temperature sensors, which sense a temperature of a coolant of the heat pump 7 to 10 directly in front of and behind the evaporator 8. The temperature difference that can be determined from this can be used as a measure of an amount of heat present in the heat pump 7 to 10.
  • an exhaust air dryer may also be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

Le sèche-linge (1) selon la présente invention comprend un ventilateur (4) servant à faire circuler l'air de séchage L, une pompe à chaleur (7 à 10), et un dispositif de mesure de température (11), le sèche-linge (1) étant conçu pour régler la puissance de ventilation du ventilateur (4) en fonction d'au moins une température T détectée par un dispositif de mesure de température (11) sur la pompe à chaleur (7 à 10).
PCT/EP2013/071821 2012-10-31 2013-10-18 Sèche-linge doté d'une pompe à chaleur Ceased WO2014067797A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012219975.6A DE102012219975A1 (de) 2012-10-31 2012-10-31 Wäschetrocknungsgerät mit Wärmepumpe
DE102012219975.6 2012-10-31

Publications (2)

Publication Number Publication Date
WO2014067797A2 true WO2014067797A2 (fr) 2014-05-08
WO2014067797A3 WO2014067797A3 (fr) 2014-08-14

Family

ID=49385261

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/071821 Ceased WO2014067797A2 (fr) 2012-10-31 2013-10-18 Sèche-linge doté d'une pompe à chaleur

Country Status (2)

Country Link
DE (1) DE102012219975A1 (fr)
WO (1) WO2014067797A2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3124689A1 (fr) 2015-07-27 2017-02-01 Electrolux Appliances Aktiebolag Procédé d'exploitation d'un séchoir à pompe à chaleur
EP3124690A1 (fr) 2015-07-27 2017-02-01 Electrolux Appliances Aktiebolag Procédé d'exploitation d'un séchoir à pompe à chaleur
EP3239387A1 (fr) 2016-04-26 2017-11-01 Electrolux Appliances Aktiebolag Procédé pour faire fonctionner un appareil de séchage de linge et appareil de séchage de linge
EP3239390A1 (fr) 2016-04-26 2017-11-01 Electrolux Appliances Aktiebolag Procédé pour faire fonctionner un appareil de séchage de linge et appareil de séchage de linge
EP3255202A1 (fr) 2016-06-09 2017-12-13 BSH Hausgeräte GmbH Appareil ménager comportant une pompe à chaleur
EP3255203A1 (fr) 2016-06-09 2017-12-13 BSH Hausgeräte GmbH Appareil ménager comportant une pompe à chaleur
EP4172399A4 (fr) * 2020-06-24 2024-07-03 LG Electronics Inc. Appareil de traitement de linge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005032322A2 (fr) 2003-09-29 2005-04-14 Self Propelled Research And Development Specialists, Llc Seche-linge a pompe a chaleur
DE102007017587A1 (de) 2006-04-17 2007-10-18 Lg Electronics Inc. Wäschetrockner und Steuerungsverfahren für einen solchen
EP1688532B1 (fr) 2005-01-12 2009-03-18 Whirlpool Corporation Machine à sécher automatique
WO2009083170A2 (fr) 2007-12-31 2009-07-09 Electrolux Home Products Corporation N.V. Appareil ménager électrique et son procédé de fonctionnement
EP2468949A2 (fr) 2010-12-24 2012-06-27 V-Zug AG Sèche-linge doté d'un échangeur thermique additionnel commandé en fonction de la température

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1884586A3 (fr) * 2006-11-06 2008-02-27 V-Zug AG Sèche-linge avec échangeur de chaleur supplémentaire
JP2012125352A (ja) * 2010-12-14 2012-07-05 Samsung Electronics Co Ltd 衣類乾燥機
PL2690212T3 (pl) * 2012-07-23 2017-04-28 Whirlpool Corporation Sposób sterowania suszarką do pranej bielizny z systemem pompy ciepła i suszarka do pranej bielizny sterowana takim sposobem

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005032322A2 (fr) 2003-09-29 2005-04-14 Self Propelled Research And Development Specialists, Llc Seche-linge a pompe a chaleur
EP1688532B1 (fr) 2005-01-12 2009-03-18 Whirlpool Corporation Machine à sécher automatique
DE102007017587A1 (de) 2006-04-17 2007-10-18 Lg Electronics Inc. Wäschetrockner und Steuerungsverfahren für einen solchen
WO2009083170A2 (fr) 2007-12-31 2009-07-09 Electrolux Home Products Corporation N.V. Appareil ménager électrique et son procédé de fonctionnement
EP2468949A2 (fr) 2010-12-24 2012-06-27 V-Zug AG Sèche-linge doté d'un échangeur thermique additionnel commandé en fonction de la température

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3124689A1 (fr) 2015-07-27 2017-02-01 Electrolux Appliances Aktiebolag Procédé d'exploitation d'un séchoir à pompe à chaleur
EP3124690A1 (fr) 2015-07-27 2017-02-01 Electrolux Appliances Aktiebolag Procédé d'exploitation d'un séchoir à pompe à chaleur
EP3239387A1 (fr) 2016-04-26 2017-11-01 Electrolux Appliances Aktiebolag Procédé pour faire fonctionner un appareil de séchage de linge et appareil de séchage de linge
EP3239390A1 (fr) 2016-04-26 2017-11-01 Electrolux Appliances Aktiebolag Procédé pour faire fonctionner un appareil de séchage de linge et appareil de séchage de linge
CN107313228A (zh) * 2016-04-26 2017-11-03 伊莱克斯家用电器股份公司 用于操作衣物干燥装置的方法以及衣物干燥装置
CN107313228B (zh) * 2016-04-26 2021-05-07 伊莱克斯家用电器股份公司 用于操作衣物干燥装置的方法以及衣物干燥装置
EP3255202A1 (fr) 2016-06-09 2017-12-13 BSH Hausgeräte GmbH Appareil ménager comportant une pompe à chaleur
EP3255203A1 (fr) 2016-06-09 2017-12-13 BSH Hausgeräte GmbH Appareil ménager comportant une pompe à chaleur
EP4172399A4 (fr) * 2020-06-24 2024-07-03 LG Electronics Inc. Appareil de traitement de linge
US12234599B2 (en) 2020-06-24 2025-02-25 Lg Electronics Inc. Laundry treating apparatus

Also Published As

Publication number Publication date
DE102012219975A1 (de) 2014-04-30
WO2014067797A3 (fr) 2014-08-14

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