EP2476796B1 - Wäschetrockner mit Wärmepumpe - Google Patents

Wäschetrockner mit Wärmepumpe Download PDF

Info

Publication number: EP2476796B1
Authority: EP; European Patent Office
Prior art keywords: cooling agent; process air; tumble dryer; flow rate; drum
Prior art date: 2011-01-13
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.): Not-in-force

Application number

EP11401008A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP2476796A1 (de

Inventor

Ralf Bussmann

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.)

2011-01-13

Filing date

2011-01-13

Publication date

2012-11-21

2011-01-13 Application filed by Miele und Cie KG filed Critical Miele und Cie KG

2011-01-13 Priority to ES11401008T priority Critical patent/ES2395488T3/es

2011-01-13 Priority to EP11401008A priority patent/EP2476796B1/de

2011-01-13 Priority to PL11401008T priority patent/PL2476796T3/pl

2012-07-18 Publication of EP2476796A1 publication Critical patent/EP2476796A1/de

2012-11-21 Application granted granted Critical

2012-11-21 Publication of EP2476796B1 publication Critical patent/EP2476796B1/de

Status Not-in-force legal-status Critical Current

2031-01-13 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
- D06F58/206—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, wherein the refrigerant in a piping system with an evaporator, a compressor with a compressor which is surrounded by a capsule housing substantially gas-tight, a condenser and circulates a throttle, wherein the heat exchanger containing the evaporator and the heater, the condenser of the heat pump.
the invention thus has the object to provide an efficient clothes dryer with a heat pump of simple design, in which a simple way, a quick, temporary removal of excess heat from the heat pump cycle is possible.
the dryer as a whole can be very easily constructed with only one drive motor for the process air blower and the drum drive, wherein the process air blower is optimized for a preferred direction.
the fan provides the full capacity, the heat pump operation is designed for this preferred direction.
the fan has a lower flow rate of the process air, so that the refrigerant in the refrigerant circuit can heat up quickly in the short term, since it is not sufficiently cooled due to the low flow rate of the process air.
the heat pump dryer includes a.
Cooling device comprising a pipe system in the condenser, which is designed to flow through a coolant for removing heat from the condenser. Since the condenser is the so-called hot component of the refrigerant circuit, a cooling of the refrigerant at this point is particularly effective possible because coolant, which is about room temperature or 40 ° C warm is still suitable for dissipating excess heat from the refrigerant.
the coolant is water. Water is almost always available and handling with this non-toxic medium is particularly easy and safe.
the dryer comprises a collecting tank for collecting accumulated condensate, which is intended for use as a coolant.
a collecting tank for collecting accumulated condensate, which is intended for use as a coolant.
a pump is provided, which is adapted to pump the coolant from the sump into or through the pipe system in the condenser.
the refrigerant can be cooled very accurately and specifically depending on the cooling demand.
the cooling times can be very precisely limited or controlled, so that the refrigerant circuit can be run in an optimal or suitable for the refrigerant temperature level.
the sump tray is used to collect or buffer the condensate for use as a coolant.
the condensate is conveyed by means of a pump from the sump into or through the pipe system.
the so-called condensate pump with the condensate in the sump or in the Outflow is pumped, also used to provide the coolant flow.
the pipe system of the cooling device is in this case between sump and sump or outlet.
the motor and the blower are adapted to a first volume flow for the process air in a forward direction of rotation of the drum and a second volume flow in a reversing direction of rotation of the drum promote.
the first volume flow is higher than the second volume flow, for example, the first volume flow can be two to four times the second volume flow. This provides a simple way of providing a high volume flow for an optimal drying process.
the dryer comprises a control device for controlling the engine and the compressor for the drying process.
the control device is further configured to pump the coolant through the pipe system in the condenser, when the process air is conveyed with the second volume flow.
the cooling of the refrigerant is activated only when the condenser is charged with a small volume flow of process air, so if the condenser, which serves to heat the process air, is cooled less than the first volume flow corresponding to the full flow.
control device is set up to operate the motor for a reversing direction of rotation of the drum and for the second volume flow of the process air in the presence of a predetermined amount of condensate or coolant. This ensures that the phase of the drying process with the lower volume flow is only activated when sufficient condensate is available for cooling.
the heat pump device it is expedient to arrange the heat pump device, the motor 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 invention further relates to a method for operating a tumble dryer according to one of the preceding claims, comprising temporal sections in which the process air is conveyed in its preferred direction, while the refrigerant is not cooled by means of the cooling liquid and further comprising temporal sections in which the process air conveyed in the opposite direction while the refrigerant is cooled by means of the cooling liquid or condensate.
one or more temporal sections in which the process air is conveyed with the first volume flow are longer than the time sections in which the process air is conveyed with the second, smaller volume flow. This avoids that too much heat is removed from the refrigerant.
the time segments for the preferred direction are at least twice as long compared to the time segments for the opposite direction. For the thorough mixing of the laundry, these shorter reversing phases of the drum are sufficient, the refrigerant circuit being only slightly influenced by the additional cooling with regard to its effect or effectiveness.
Fig. 1 shows in perspective a heat pump - tumble dryer 1.
the tumble dryer 1 in this case comprises a housing 2 in which a rotatably mounted drum 3 is arranged.
the functional module 5 which receives the components for the heat pump, the fan and the drive of the drum 3.
the process air PL by means of a blower 17 ( Fig. 2 ) 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 PL and the heater 16 (FIG. Fig. 2 ) are arranged for heating the process air PL.
Fig. 2 shows the heat pump dryer according to the invention in a schematic sectional view.
the heat pump device 8a comprises a refrigerant circuit in which refrigerant circulates in a line system with an evaporator 1, a compressor 14 for compressing the refrigerant, a condenser 16 and a throttle 15a, the heat exchanger the evaporator 15 and the heater contains the condenser 16 of the heat pump 8a.
the evaporator 15 and the condenser 16 are arranged in the channel 8 such that the moist process air PL first flows through the evaporator 15, so that it is dehumidified due to the cooling and the consequent condensation.
the bottom-side functional module 5 further includes the motor 10, which drives the fan 9 and the drum 3 here.
the fan 9 is designed as a radial fan with curved blades 9a, so that in a preferred direction the full volume flow V1 (FIG. Fig. 4 ) for the process air PL.
V1 full volume flow
V2 lower volume flow
the heat pump device comprises a cooling device 11.
the cooling device 11 comprises a pipe system 21 in the condenser 16, which is designed to flow through a coolant for removing heat from the condenser 16.
the pipe system 21 is guided in several loops through the fins 12 or rib structure of the condenser 16 to the refrigerant, which also flows through a loop-like guided pipe system 13 a through the condenser 16 and through the arrangement of the fins 12.
the dryer 1 comprises a further pump 20 which pumps condensate from the collecting container 4 via the supply line 21 a to the pipe system 21 in the condenser 16.
the pump 20 is in this case attached directly to the collecting container 4.
a controllable valve can be used, which can release the flow of condensate due to gravity, wherein the pump 20 or the valve is activated by means of the control device 19.
Fig. 4 shows in a diagram the timing for the operation of the drying process.
the heat pump or the compressor 14 is in this case operated substantially uniformly, so that sets a stable refrigerant circuit.
the motor 10 is operated so that the drum 3 is rotated in the forward direction n and the full volume flow V1 is generated for the process air PL.
the condenser 16 which forms the heater for the process air, sufficiently cooled, so that the refrigerant does not heat up too much.
the motor 10 is operated so that the drum is rotated in reversing direction -n, wherein in this direction of rotation of the blower mounted on the same motor 9, only a smaller volume flow V2 for the process air PL is generated.
the temperature of the refrigerant now increases because less heat is removed from the condenser 16 via the process air PL.
the pump 20 is now activated to supply the condensate to the condenser 16 (Pump active) to cool it.
the cooling is stopped by the pump 20 or the valve is deactivated (pump inactive).
the motor 10 is switched back to the preferred direction, so that the drum is again rotated in the forward direction n and the fan 9 is operated in the preferred direction for generating the full volume flow V1. This process can be repeated several times.
the phases of the reversing rotation -n are each shorter than the rotational phases n in the forward direction of rotation or in the preferred direction of the blower 9.

Landscapes

Engineering & Computer Science (AREA)
Textile Engineering (AREA)
Detail Structures Of Washing Machines And Dryers (AREA)

EP11401008A 2011-01-13 2011-01-13 Wäschetrockner mit Wärmepumpe Not-in-force EP2476796B1 (de)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
ES11401008T ES2395488T3 (es)	2011-01-13	2011-01-13	Secadora de ropa con bomba de calor
EP11401008A EP2476796B1 (de)	2011-01-13	2011-01-13	Wäschetrockner mit Wärmepumpe
PL11401008T PL2476796T3 (pl)	2011-01-13	2011-01-13	Suszarka do bielizny z pompą cieplną

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP11401008A EP2476796B1 (de)	2011-01-13	2011-01-13	Wäschetrockner mit Wärmepumpe

Publications (2)

Publication Number	Publication Date
EP2476796A1 EP2476796A1 (de)	2012-07-18
EP2476796B1 true EP2476796B1 (de)	2012-11-21

Family

ID=44115544

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP11401008A Not-in-force EP2476796B1 (de)	2011-01-13	2011-01-13	Wäschetrockner mit Wärmepumpe

Country Status (3)

Country	Link
EP (1)	EP2476796B1 (pl)
ES (1)	ES2395488T3 (pl)
PL (1)	PL2476796T3 (pl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE202015006575U1 (de)	2015-06-25	2015-10-20	Fritz Curtius	Wäsche-Trockner
DE202015007774U1 (de)	2015-10-20	2015-12-22	Fritz Curtius	Wärmepumpen-Trockner für Wäsche

Families Citing this family (5)

* 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
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.
DE102014225806A1 (de)	2014-12-15	2016-06-16	BSH Hausgeräte GmbH	Haushaltsgerät zum Trocknen von Wäsche
DE102014118872B4 (de) *	2014-12-17	2025-10-23	Miele & Cie. Kg	Vorrichtung und Verfahren zum Aufrechterhalten einer Funktion einer Wärmepumpeneinrichtung und Wäschebehandlungsgerät
CN108085942A (zh) *	2016-11-22	2018-05-29	博西华电器（江苏）有限公司	具有空气加热通道的干衣机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4409607C2 (de) *	1993-04-21	2002-03-14	Miele & Cie	Kondensationswäschetrockner mit einer Wärmepumpe
ITPN20000070A1 (it)	2000-11-20	2002-05-20	Electrolux Zanussi Elettrodome	Asciugabiancheria a pompa di calore
DE102005062939A1 (de) *	2005-12-29	2007-07-05	BSH Bosch und Siemens Hausgeräte GmbH	Hausgerät zur Pflege von Wäschestücken
DE102007002181B3 (de) *	2007-01-15	2008-08-21	BSH Bosch und Siemens Hausgeräte GmbH	Kondensationstrockner mit einer Wärmepumpe
EP2058427A1 (en) *	2007-11-06	2009-05-13	BSH Electrodomésticos España, S.A.	Household appliance having a heat pump unit and means for cooling a component thereof

2011
- 2011-01-13 PL PL11401008T patent/PL2476796T3/pl unknown
- 2011-01-13 EP EP11401008A patent/EP2476796B1/de not_active Not-in-force
- 2011-01-13 ES ES11401008T patent/ES2395488T3/es active Active

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE202015006575U1 (de)	2015-06-25	2015-10-20	Fritz Curtius	Wäsche-Trockner
DE102015008234A1 (de)	2015-06-25	2016-12-29	Fritz Curtius	Wäsche-Trockner
DE202015007774U1 (de)	2015-10-20	2015-12-22	Fritz Curtius	Wärmepumpen-Trockner für Wäsche
DE102015013570A1 (de)	2015-10-20	2017-04-20	Fritz Curtius	Wärmepumpen-Trockner für Wäsche

Also Published As

Publication number	Publication date
EP2476796A1 (de)	2012-07-18
ES2395488T3 (es)	2013-02-13
PL2476796T3 (pl)	2013-03-29

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