EP2744936A1 - Tumble drier having a heat pump comprising a drive, and method for operating the same - Google Patents
Tumble drier having a heat pump comprising a drive, and method for operating the sameInfo
- Publication number
- EP2744936A1 EP2744936A1 EP12743981.8A EP12743981A EP2744936A1 EP 2744936 A1 EP2744936 A1 EP 2744936A1 EP 12743981 A EP12743981 A EP 12743981A EP 2744936 A1 EP2744936 A1 EP 2744936A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thermoelectric generator
- drive
- drying apparatus
- heat pump
- cooling device
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 239000002918 waste heat Substances 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims description 34
- 239000003507 refrigerant Substances 0.000 claims description 13
- 238000001704 evaporation Methods 0.000 claims description 2
- 239000003570 air Substances 0.000 description 36
- 238000013021 overheating Methods 0.000 description 4
- 230000005678 Seebeck effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
-
- 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
- Laundry drying apparatus with a heat pump comprising a drive and method for its operation
- the invention relates to a laundry drying apparatus with a heat pump comprising a drive, and with at least one further functional element.
- the invention further relates to a method for operating such a laundry drying device.
- Laundry dryers equipped with heat pumps have a considerably reduced energy requirement for drying laundry.
- a quasi-steady state is reached, in which the waste heat generated during operation of the compressor has to be dissipated in order to avoid overheating of the entire system.
- a cooling air blower which cools the drive of the heat pump by means of supplied ambient air, wherein the resulting heated exhaust air subsequently escapes from the device.
- a laundry drying apparatus having a heat pump comprising a drive, and at least one further functional element wherein the laundry drying apparatus comprises a thermoelektnschen generator, a hot side of the thermoelektnschen generator is located on the drive and a supply output of the thermoelektnschen generator with the at least one further functional element of Clothes drying machine is electrically connected.
- the drive in its environment typically represents the hottest component of the laundry dryer, while it surrounding components have an at least average lower temperature.
- a typical temperature of the drive is about 95 ° C, while the surrounding components are only up to about 50 ° C warm.
- the thermoelectric generator uses this temperature difference to generate an electrical voltage, the so-called. Thermoelectric voltage.
- the thermoelectric voltage can be used to operate the at least one further functional element.
- the at least one functional element autonomous (ie, without a provided external power supply (power supply, gas supply, etc.) to be driven, which reduces the energy consumption of the laundry dryer.
- the heat pump can be any heat pump which receives the energy required for its operation via a drive.
- the drive can be a mechanical drive, for example a compressor in a heat pump, in which a cyclically vaporized and liquefied refrigerant circulates, or a drive of a Stirling heat pump.
- a drive in the form of a thermal drive ie a heat source, in a Vuilleumier heat pump.
- the thermoelectric generator can in particular be based on the Seebeck effect (Seebeck generator).
- the thermal voltage AV can in particular be proportional to the temperature difference ⁇ .
- the operation of a thermoelectric generator is basically known and need not be further elaborated here.
- the laundry drying device may be in particular a household appliance.
- the laundry drying apparatus may have a general receiving space for receiving laundry for drying thereof.
- the receiving space may in particular be a laundry drum, in particular with a hollow cylindrical basic shape.
- the laundry drum can be static or rotatable.
- the clothes dryer may be a top loader or a front loader.
- the tumble dryer can be a convection Be a tumble dryer or an exhaust air dryer.
- the clothes dryer may be a tumble dryer or a washer-dryer.
- thermoelectric generator may in particular be connected to an outside of the drive, e.g. soldered, glued thermally conductive and / or screwed.
- the cold side may be connected to another article or area of the heat pump clothes dryer as the drive.
- the at least one further functional element comprises a cooling device. This can prevent overheating of heat-sensitive components without an additional expenditure of energy.
- the at least one functional element comprises a cooling device for cooling the drive.
- the cooling device in particular the cooling device for cooling the drive, comprises a fan or fan.
- the cooling device is adapted to cool a cold side of the thermoelectric generator. This reduces the temperature ⁇ of the cold side, which in turn increases the temperature difference ⁇ and the thermal voltage AV. This in turn increases the efficiency of the thermoelectric generator.
- the cooling device is a fan
- the cooling device is adapted to blow a cold side of the thermoelectric generator.
- the thermoelectric generator is a plate-shaped generator whose one main side is its hot side and whose other main side is its cold side. Such a thermoelectric generator is particularly compact and resistant. Under a plate-shaped generator can be understood in particular a generator whose thickness significantly smaller than its width and length, in particular by at least an order of magnitude.
- a main page may in particular be understood to mean a page whose extent is determined by the length and the width.
- the plate-shaped generator can be flat or curved.
- the plate-shaped thermoelectric generator is fixed with its warm side to the drive, in particular is attached flat. So a high performance can be achieved. It is a preferred development that the cold side of the plate-shaped thermoelectric generator is a free surface. In other words, the cold side is not connected to another component of the laundry dryer, but is adjacent to air. If the cooling device is a fan, the fan may be directed to the cold side of the plate-shaped thermoelectric generator. This provides the advantage that both the cold side and the drive can be cooled with a cooling air flow generated by the fan.
- cooling of the cold side can be achieved eg by branching off a secondary cooling air flow blown to the cold side by means of the blower. It is also a preferred embodiment that the cooling device is adapted to work only from a minimum thermal voltage. Thus, a noise can be suppressed and a life of the cooling device, in particular a blower, be extended.
- the drive is a compressor for a circulating in the heat pump refrigerant, wherein the heat pump in addition an evaporator for evaporating the refrigerant, a condenser for liquefying the refrigerant and a throttle, so a relaxation device (eg, a throttle valve or a capillary) for relaxing the refrigerant.
- the evaporator in particular, with a process air duct for drying process air at a warmer point and the condenser with the process air duct at a colder point thermally coupled. Due to the fact that the evaporator is thermally coupled to the warmer point, heat is withdrawn from the process air duct or process air located there and transferred to the evaporator.
- thermoelectric generator operates at least one further functional element of the laundry dryer.
- thermoelectric generator drives a fan to cool the compressor. It is still a preferred embodiment that the fan blows on a cold side of the thermoelectric generator and thereby cools.
- the thermoelectric generator may be a plate-shaped generator whose one main side is its hot side and whose other main side is its cold side, and the thermoelectric generator with its hot side attached to the drive.
- the figure shows a laundry drying device 1 in the form of a household circulating air dryer.
- the laundry drying device 1 is designed as a front loader and has a rotatable laundry drum 2.
- the laundry drum 2 is part of a closed process air circuit, together with a process air duct 3, which connects on the one hand to an input 4 of the laundry drum 2 and on the other hand at an output 5 of the laundry drum 2.
- a process air duct 3 is a fan 6 to circulate process air L in the process air circuit 2, 3.
- a heat pump 7 to 10, K has an evaporator 7, a drive 8 in the form of a compressor 8, a condenser 9 and a relaxation device in the form of a throttle valve 10. These elements of the heat pump 7 to 10 form a refrigerant K leading refrigeration cycle in this order.
- the evaporator 7 serves as a heat exchanger and withdraws from the laundry drum 2 exiting, warm-moist process air L heat. By means of the heat pump 7 to 10, this heat is transferred to the condenser 9.
- the evaporated refrigerant K is compressed by the compressor 8, thereby increasing its internal pressure and its temperature.
- the compressed, still gaseous refrigerant K then passes to the condenser 9.
- the process air L in turn condenses on the evaporator 7 and is performed as a colder, dry process air L through the blower 6 to the condenser 9.
- the condenser 9 serves as a heat exchanger, but now from the condenser 9 heat, which happens by liquefaction of the refrigerant K due to the cooling by the colder process air L, is transferred to the process air L, so that the process air L as dry-warm Process air L is blown into the laundry drum 2.
- the process air L heats the laundry W to be dried and absorbs moisture released therefrom.
- the compressor 8 In an operation of the laundry drying apparatus 1, the compressor 8 generates in this embodiment, a waste heat of about 300 W and is thereby heated above average. As a result, the compressor 8 represents the hottest component of the laundry drying apparatus 1 at about 95 ° C., while the components surrounding it have a temperature of up to only 50 ° C.
- the laundry drying apparatus 1 In order to prevent overheating of the heat pump 7 to 10, in particular of the compressor 8, the laundry drying apparatus 1 has a fan 11, the air flow of which can overflow the compressor 8 and thus cool it.
- the fan 1 1 can suck in air from the clothes drying apparatus 1 or from an environment of the laundry drying apparatus 1, for example through air passage slots 12a in a housing wall
- blower 1 1 While heretofore, the blower 1 1 is operated from a mains supply and thus adversely affects an energy balance of the clothes drying apparatus 1, the blower 1 1 here by means of an autonomous (i.e., not mains-powered) thermoelectric generator
- thermoelectric generator 13 operated.
- the thermal voltage AV can in particular be proportional to the temperature difference ⁇ .
- thermoelectric generator 13 is here plate-shaped, wherein the cold side
- the hot side 15 of the thermoelectric generator 13 is attached directly or indirectly (eg via a thermally highly conductive intermediate material) flat to the compressor 8, for example by soldering, screwing, gluing, etc.
- the cold side 14 is a free surface which is adjacent to air.
- the blower 11 is set up and arranged to also cool the cold side 14 of the thermoelectric generator 13.
- both the cold side 14 of the thermoelectric generator 13 and the compressor 8 can be blown by the blower 1 1. This reduces the temperature Ti of the cold side, which in turn increases the temperature difference ⁇ and the thermal voltage AV.
- thermoelectric generator 13 to which the thermoelectric voltage AV or a related variable is applied, is electrically connected to at least the blower 1 1 to the electrical supply. Since the compressor 8 generates the waste heat of about 300 W, can at a typical efficiency of the thermoelectric generator 13 of 8% a fan with 24 W are operated.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL12743981T PL2744936T3 (en) | 2011-08-16 | 2012-08-07 | Tumble drier having a heat pump comprising a drive, and method for operating the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011081022A DE102011081022A1 (en) | 2011-08-16 | 2011-08-16 | Laundry drying apparatus with a heat pump comprising a drive and method for its operation |
PCT/EP2012/065444 WO2013023958A1 (en) | 2011-08-16 | 2012-08-07 | Tumble drier having a heat pump comprising a drive, and method for operating the same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2744936A1 true EP2744936A1 (en) | 2014-06-25 |
EP2744936B1 EP2744936B1 (en) | 2015-05-06 |
Family
ID=46639507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20120743981 Not-in-force EP2744936B1 (en) | 2011-08-16 | 2012-08-07 | Tumble drier having a heat pump comprising a drive, and method for operating the same |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2744936B1 (en) |
DE (1) | DE102011081022A1 (en) |
PL (1) | PL2744936T3 (en) |
WO (1) | WO2013023958A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017153242A1 (en) | 2016-03-07 | 2017-09-14 | Arcelik Anonim Sirketi | A laundry dryer comprising a thermoelectric element |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITPR20130024A1 (en) * | 2013-03-29 | 2014-09-30 | Indesit Co Spa | DRYING APPLIANCES. |
PL3066406T3 (en) | 2013-11-06 | 2018-07-31 | BSH Hausgeräte GmbH | Heat pump for a household appliance |
EP2871432A1 (en) | 2013-11-06 | 2015-05-13 | BSH Hausgeräte GmbH | Heat pump for a household appliance |
EP2985466A1 (en) | 2014-08-14 | 2016-02-17 | BSH Electrodomésticos España, S.A. | Rotary compressor, heat pump, and household appliance |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4409607C2 (en) * | 1993-04-21 | 2002-03-14 | Miele & Cie | Condensation clothes dryer with a heat pump |
DE19853234A1 (en) * | 1998-10-21 | 2000-05-04 | Whirlpool Co | Tumble dryer with a heat pump |
US20070000068A1 (en) * | 2005-06-30 | 2007-01-04 | Gerard France Paul Amaat R | Fabric article treating device and system |
DE102005060040A1 (en) * | 2005-12-15 | 2007-06-21 | BSH Bosch und Siemens Hausgeräte GmbH | Circuit arrangement for a Peltier module |
DE102008042832A1 (en) * | 2008-10-14 | 2010-04-22 | BSH Bosch und Siemens Hausgeräte GmbH | Electric appliance with a standby module |
WO2011000704A1 (en) * | 2009-06-29 | 2011-01-06 | Arcelik Anonim Sirketi | A laundry dryer the drying effectiveness of which is increased by using different heat sources |
RU2012122588A (en) * | 2009-11-03 | 2013-12-10 | Басф Се | APPLICATION OF POROUS METAL MATERIALS AS A CONTACT IN THERMOELECTRIC MODULES |
-
2011
- 2011-08-16 DE DE102011081022A patent/DE102011081022A1/en not_active Withdrawn
-
2012
- 2012-08-07 WO PCT/EP2012/065444 patent/WO2013023958A1/en active Application Filing
- 2012-08-07 PL PL12743981T patent/PL2744936T3/en unknown
- 2012-08-07 EP EP20120743981 patent/EP2744936B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2013023958A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017153242A1 (en) | 2016-03-07 | 2017-09-14 | Arcelik Anonim Sirketi | A laundry dryer comprising a thermoelectric element |
Also Published As
Publication number | Publication date |
---|---|
PL2744936T3 (en) | 2015-09-30 |
DE102011081022A1 (en) | 2013-02-21 |
EP2744936B1 (en) | 2015-05-06 |
WO2013023958A1 (en) | 2013-02-21 |
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