EP2407587B2 - Wäschetrockner mit Wärmepumpe - Google Patents

Wäschetrockner mit Wärmepumpe Download PDF

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Publication number
EP2407587B2
EP2407587B2 EP10401103.6A EP10401103A EP2407587B2 EP 2407587 B2 EP2407587 B2 EP 2407587B2 EP 10401103 A EP10401103 A EP 10401103A EP 2407587 B2 EP2407587 B2 EP 2407587B2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
pipe portion
condenser
evaporator
compressor
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
EP10401103.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2407587A1 (de
EP2407587B1 (de
Inventor
Ralf Bussmann
Wolfhard Jording
Marlen Laforet
Josef Schneider
Alexander Malchus
Stefan Siepmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Priority to EP10401103.6A priority Critical patent/EP2407587B2/de
Priority to ES10401103T priority patent/ES2394785T3/es
Priority to SI201030093T priority patent/SI2407587T1/sl
Priority to PL10401103T priority patent/PL2407587T3/pl
Publication of EP2407587A1 publication Critical patent/EP2407587A1/de
Application granted granted Critical
Publication of EP2407587B1 publication Critical patent/EP2407587B1/de
Publication of EP2407587B2 publication Critical patent/EP2407587B2/de
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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 
    • D06F58/206—Heat pump arrangements

Definitions

  • the invention relates to a tumble dryer comprising a arranged in a housing, driven by a motor, rotatably mounted on a horizontal or inclined axis drum, a closed process air circuit in which supplied by means of a process air blower drying air via an air inlet of the drum, via an air outlet from this discharged, dehumidified in a heat exchanger and then reheated by a heater, a heat pump device with a refrigerant circuit in which circulates refrigerant in a piping system with an evaporator, a compressor, a condenser and a throttle, wherein the heat exchanger, the evaporator and the heating Condenser of the heat pump further comprising an inner heat exchanger, which is adapted to provide a heat transfer of a high-pressure line section to a pressurized line section line len.
  • a heat pump dryer which additionally comprises an internal heat exchanger to completely vaporize liquid residues or pots in the vaporous refrigerant in the low-pressure line section.
  • the EP 0 521 298 A2 discloses heat exchanger devices for compressed air systems in which heat is released from a refrigerant line to the air.
  • the invention thus has the object to provide a tumble dryer with an efficient heat pump.
  • the advantage achieved with the invention is that less so-called waste heat from the heat pump circuit must be removed, so that additional heat exchanger in the refrigerant circuit for cooling are no longer necessary.
  • the refrigerant circuit requires less space, so that a particularly compact arrangement is made possible here.
  • the energy used for the drying process is used more efficiently, so that the dryer emits less heat into the installation room, which is particularly desirable in living spaces.
  • the heat pump device in the refrigerant circuit comprises an inner heat exchanger, which is adapted to provide a heat transfer of a high-pressure line section to a pressurized line section.
  • a line section can also be formed by the condenser itself.
  • the inner heat exchanger causes the usable enthalpy difference between the pressure side of the compressor and the heat exchanger acting as a heat exchanger of the condenser is greater.
  • the usable enthalpy difference between the throttle input and the compressor input increases. This makes the cold side colder and the warm side warmer, compared to a heat pump without an internal heat exchanger. This increases the effectiveness of the heat pump.
  • the line sections forming the heat transfer are in direct contact, without an air gap being present between them.
  • the inner heat exchanger is formed by providing a heat transfer from a line section between the condenser and the throttle to a line section between the evaporator and the compressor.
  • the internal heat exchanger can be produced by providing heat transfer from a line section between the compressor and the condenser to a line section between the throttle and the evaporator.
  • the inner heat exchanger consists of a wiring harness which comprises the high-pressure line section and the low-pressure line section.
  • the tube forming the inner heat exchanger are summarized as a wiring harness.
  • the wiring harness can then be shaped accordingly, as permitted by the space inside the device housing.
  • the two line sections are wrapped around one another within the inner heat exchanger for providing a defined contact surface of the line walls for heat transfer.
  • the pronounced contact surfaces improve the heat transfer from the warmer high-pressure line section to the colder low-pressure line section.
  • the inner heat exchanger is formed in that the low-pressure line section extends within the high-pressure line section.
  • the colder low-pressure line section is at least partially enclosed or flowed around by the warmer refrigerant.
  • the low-pressure line section is arranged coaxially within the high-pressure line section.
  • the cooler low-pressure line section which is colder than the high-pressure line section, is completely bypassed by the warmer refrigerant, so that an optimum heat transfer of the refrigerant is provided between these two line sections.
  • the inner heat exchanger is designed as a spirally wound wiring harness.
  • a long wiring harness with the high-pressure and low-pressure pipe sections contained therein can be accommodated quite compactly in a confined space.
  • no abrupt deflections of the refrigerant take place here, so that the inner heat exchanger in this form forms a low flow resistance for the refrigerant.
  • the inner heat exchanger is formed as a serpentine-shaped wiring harness.
  • This design is particularly compact and small-scale run. Although this results in an increased flow resistance at the numerous deflections, but can be neglected at a slowed flow velocity of the resistance.
  • the low-pressure line section is led to the line section of the condenser in heat-conducting contact to provide the inner heat exchanger. This eliminates the previously separately formed inner heat exchanger, which is now integrated in the compact block of the condenser.
  • the heat-conductive contact is provided by means of ribs or fins, which are connected in heat-conducting manner with the line section in the condenser.
  • the ribs or fins are already present in the condenser to increase the heat-superior surface to the process air flow, so that this embodiment is particularly easy to implement in a tumble dryer.
  • fins or fins for heat dissipation are attached to the wall of the high-pressure pipe section, thereby increasing the surface area of the outer pipe section, thereby improving the heat release to the ambient air from the dryer housing. This causes a so-called desuperheating of the refrigerant, since the refrigerant frequently heats up continuously during the drying process until excess heat has to be removed from the refrigerant circuit.
  • the slats are arranged in blocks, which are provided with openings for the passage of the inner heat exchanger forming the wiring harness. This facilitates the manufacture of the internal heat exchanger.
  • a prefabricated lamella block of pre-bent wiring harness is inserted into openings and then fixed so that a subsequent attachment of the slats is easily possible.
  • a fan for generating a cooling air flow which is set up to dissipate heat from the inner heat exchanger forming wiring harness.
  • the heat pump device with the aforementioned components, the engine and the process air blower in a compact functional module of the tumble dryer.
  • the training has proven to be advantageous as a bottom-side functional module.
  • the Fig. 1 shows in the perspective of a tumble dryer 1.
  • the tumble dryer 1 in this case comprises a housing 2 in which a rotatably mounted drum 3 is arranged.
  • the three figures each show the clothes dryer 1 in the closed situation.
  • the functional module 5 which receives the components for the heat pump, the blower and the drive of the drum 3.
  • the process air PL is generated by means of a blower and fed to the air inlet 6 of the drum 3.
  • the drying air PL passes from the drum 3 in the bottom module 5, in which in a channel 8 of the heat exchanger 15 (FIG. Fig. 2 ) for cooling and condensation of the process air and the heater 16 ( Fig. 2 ) for heating the process air PL are arranged.
  • Fig. 2 schematically shows the heat pump dryer with the circulation of the process air PL and the components of the heat pump.
  • the channel 8 can be seen, in which the heat exchanger 15 and the radiator 16 are located, which are components of the heat pump.
  • the line system 20 serves to connect the components of the heat pump.
  • the air outlet 7 receives the moist, exhausted process air PL, wherein the fan 9, the flow of the process air PL provides.
  • a motor 10 drives the fan 9 and provides the rotational movement of the drum 3 by means of a drum drive.
  • the heat pump device comprises a refrigerant circuit in which refrigerant circulates in a line system 20 with an evaporator 15, a compressor 14, a condenser 16 and a throttle 15a, the heat exchanger 15 containing the evaporator 15 and the heater the condenser 16 of the heat pump.
  • the line system 20 provides the refrigerant cycle starting from the pressure side of the compressor 14 to the condenser 16, starting from this starting point to the throttle 15a, then to the evaporator 15 and from there to the compressor 14 ready.
  • the heat pump further comprises an internal heat exchanger 17 which is adapted to provide heat transfer of a high-pressure line section 18 between the condenser 16 and the throttle 15a to a low-pressure line section 19 between the evaporator 15 and the compressor 14.
  • a blower 23 is arranged such that it can, if necessary, guide an air flow to the inner heat exchanger. As a result, excess heat is removed from the refrigerant circuit.
  • Fig. 3 shows a section of the inner heat exchanger 17 as a helical wiring harness 24.
  • the pipe section 24 includes an outer tube 18, since the high-pressure pipe section 18 forms.
  • an inner tube 19 is coaxially arranged, which forms the low-pressure pipe section 19.
  • individual fins 21 are mounted on the outside, which form an enlarged surface of the pipe wall and thereby cause improved heat dissipation to the environment.
  • Fig. 4 shows the inner heat exchanger with a likewise helical wiring harness 24.
  • the fins 21 are formed as a block having openings 22 through which the wiring harness 24 is passed in each case.
  • Fig. 5 shows the inner heat exchanger in the embodiment with a serpentine-shaped wiring harness 24.
  • This arrangement is particularly easy to manufacture, since in a manufacturing step lamellae 21 are punched and then can be applied to the tubing 24.
  • As internal heat exchanger 17 and a plate heat exchanger can be used.
  • Fig. 6 schematically shows the components of the heat pump with an inner heat exchanger 17 in another embodiment.
  • the heat pump comprises an internal heat exchanger 17, which provides a heat transfer from the high-pressure line section, which in this case forms the line section of the condenser 16, to the line section 19, which supplies the refrigerant with low pressure.
  • the heat exchanger 17 is here attached directly to the block of the condenser 16 or is part of this block, so that no separate component is necessary.
  • a desuperheating heat exchanger 17a is arranged between condenser and throttle 15a, which is embodied here by way of example as a capillary tube, which can dissipate excess heat from the refrigerant in the pressurized line.
  • the blower 23 provides, if necessary, for a cooling air flow.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP10401103.6A 2010-07-16 2010-07-16 Wäschetrockner mit Wärmepumpe Active EP2407587B2 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP10401103.6A EP2407587B2 (de) 2010-07-16 2010-07-16 Wäschetrockner mit Wärmepumpe
ES10401103T ES2394785T3 (es) 2010-07-16 2010-07-16 Secadora de ropa con bomba de calor
SI201030093T SI2407587T1 (sl) 2010-07-16 2010-07-16 Sušilni stroj s toplotno črpalko
PL10401103T PL2407587T3 (pl) 2010-07-16 2010-07-16 Suszarka do bielizny z pompą ciepła

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10401103.6A EP2407587B2 (de) 2010-07-16 2010-07-16 Wäschetrockner mit Wärmepumpe

Publications (3)

Publication Number Publication Date
EP2407587A1 EP2407587A1 (de) 2012-01-18
EP2407587B1 EP2407587B1 (de) 2012-10-31
EP2407587B2 true EP2407587B2 (de) 2018-01-10

Family

ID=43259857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10401103.6A Active EP2407587B2 (de) 2010-07-16 2010-07-16 Wäschetrockner mit Wärmepumpe

Country Status (4)

Country Link
EP (1) EP2407587B2 (pl)
ES (1) ES2394785T3 (pl)
PL (1) PL2407587T3 (pl)
SI (1) SI2407587T1 (pl)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014002471A1 (de) * 2013-06-24 2014-12-24 Diehl Ako Stiftung & Co. Kg Elektronisches Hausgerät mit Wärmepumpe
EP2980305B1 (de) 2014-08-01 2017-01-25 Miele & Cie. KG Haushaltsgerät wie beispielsweise ein wäschetrockner, waschtrockner, eine waschmaschine, ein geschirrspüler mit einer wärmepumpeneinrichtung
DE102014013045A1 (de) 2014-09-03 2016-03-03 Detlef Görgens Wäschetrockner oder Waschmaschine mit Wäschetrocknungseinrichtung mit Wärmepumpeneinrichtung, bei denen Teile der Maschinen aus Mineralguss bestehen.
KR20180014615A (ko) * 2016-08-01 2018-02-09 엘지전자 주식회사 의류처리장치
CN109668218B (zh) * 2018-11-28 2024-05-07 珠海格力电器股份有限公司 一种换热器及具有其的空调设备
EP4086538A1 (en) * 2021-05-03 2022-11-09 BSH Hausgeräte GmbH Compressor module having means for cooling and household appliance including such

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0838795A (ja) † 1994-08-01 1996-02-13 Hitachi Ltd 乾燥装置
JP2009078246A (ja) † 2007-09-27 2009-04-16 Panasonic Corp 除湿装置
EP2182104A2 (en) † 2008-10-30 2010-05-05 Kabushiki Kaisha Toshiba Clothes dryer
EP2385169A1 (en) † 2010-05-03 2011-11-09 Electrolux Home Products Corporation N.V. A laundry machine with heat pump system and a method for operating the laundry machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9204952U1 (pl) 1991-06-04 1992-07-16 Autokuehler Gmbh & Co Kg, 3520 Hofgeismar, De
DE4422191A1 (de) 1993-07-14 1995-01-19 Miele & Cie Trockengerät, insbesondere Kondensationswäschetrockner, mit einer Wärmepumpeneinrichtung
ITPN20000070A1 (it) 2000-11-20 2002-05-20 Electrolux Zanussi Elettrodome Asciugabiancheria a pompa di calore
JP2005253588A (ja) 2004-03-10 2005-09-22 Sanyo Electric Co Ltd 乾燥機
EP1983095B1 (de) * 2008-08-08 2012-09-05 V-Zug AG Wäschetrockner mit Heizung im Wärmepumpenkreislauf

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0838795A (ja) † 1994-08-01 1996-02-13 Hitachi Ltd 乾燥装置
JP2009078246A (ja) † 2007-09-27 2009-04-16 Panasonic Corp 除湿装置
EP2182104A2 (en) † 2008-10-30 2010-05-05 Kabushiki Kaisha Toshiba Clothes dryer
EP2385169A1 (en) † 2010-05-03 2011-11-09 Electrolux Home Products Corporation N.V. A laundry machine with heat pump system and a method for operating the laundry machine

Also Published As

Publication number Publication date
SI2407587T1 (sl) 2013-01-31
ES2394785T3 (es) 2013-02-05
EP2407587A1 (de) 2012-01-18
PL2407587T3 (pl) 2013-03-29
EP2407587B1 (de) 2012-10-31

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