EP2069566B1 - Dispositif et procédé de séchage de linge comprenant une pompe à chaleur et un échangeur thermique - Google Patents

Dispositif et procédé de séchage de linge comprenant une pompe à chaleur et un échangeur thermique Download PDF

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Publication number
EP2069566B1
EP2069566B1 EP07788476A EP07788476A EP2069566B1 EP 2069566 B1 EP2069566 B1 EP 2069566B1 EP 07788476 A EP07788476 A EP 07788476A EP 07788476 A EP07788476 A EP 07788476A EP 2069566 B1 EP2069566 B1 EP 2069566B1
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EP
European Patent Office
Prior art keywords
air flow
channel
heat pump
process air
heat exchanger
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.)
Not-in-force
Application number
EP07788476A
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German (de)
English (en)
Other versions
EP2069566A1 (fr
Inventor
Markus Müller
René PAATZSCH
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.)
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Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2069566A1 publication Critical patent/EP2069566A1/fr
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Publication of EP2069566B1 publication Critical patent/EP2069566B1/fr
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    • 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
    • D06F58/30—Drying processes 
    • 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
    • D06F2105/28—Electric heating
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • 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 device for drying laundry, comprising a substantially closed first channel system for guiding the process air acting on the laundry, in which first channel system, a treatment chamber for receiving the laundry, a first fan for driving the process air stream, a first cooling channel of a heat exchanger and a second heating channel of a heat pump are arranged, wherein the second heating channel along the process air flow is behind the first cooling channel, and an open second channel system for guiding a secondary air flow, in which second channel system a second fan for driving the secondary air flow, a first heating channel of the heat exchanger and a second cooling channel of the heat pump are arranged.
  • the invention relates to a method for drying laundry, by means of a guided in a substantially closed first channel system and the laundry in a treatment chamber acting process air stream which cooled in a heat exchanger by a guided in an open second channel system secondary air flow and then by a heat pump Cooling of the secondary air flow is heated.
  • thermoelectric heat pump on the one hand
  • air-to-air heat exchanger on the other hand for the exchange of heat.
  • a self-contained closed loop process air stream is heated in the heat pump and cooled in the heat exchanger
  • a self-contained or open cooling air flow is cooled in the heat pump and heated in the heat exchanger.
  • no further functional components are provided.
  • a tumble dryer also results from each of the documents EP 0 477 554 B1 and EP 1 108 812 B1 , the disclosure of which is fully attributable to this disclosure.
  • the duct system in which the air flow is guided is substantially closed - this means that the air flow circulates in the normal operation substantially without leaks, but does not assume a much higher pressure than air in the vicinity of the device.
  • the treatment room for receiving the laundry is designed as a rotatable drum.
  • a device for drying laundry emerges in which a heat pump is provided instead of the conventional arrangement of cooler and heater.
  • a heat pump is provided instead of the conventional arrangement of cooler and heater.
  • an evaporator takes the place of the cooler, and in place of the heater, a condenser for a circulating in an associated cycle of the heat pump working fluid.
  • the channel system in which the air flow circulates can be brought into contact with the environment by opening a flap, in particular to discharge part of the air stream heated during operation from the device and to replace it with relatively cool ambient air ,
  • a washing machine in which laundry not only washed, but also can be dried.
  • an electric heating device for heating a used for drying laundry Air flow and a simple heat exchanger for cooling the heated air flow may be provided after applying the laundry, alternatively, a heat pump may be provided.
  • This heat pump can be designed like the one in the EP 0 467 188 B1 It may also be a heat pump that uses Peltier elements to utilize the thermoelectric effect.
  • a proper English short extract device for drying laundry which in turn corresponds to the type described input contains in its channel system in addition to a thermoelectric heat pump with cold and warm branch upstream of the cold branch additional heat exchanger for cooling the discharged air from the laundry and a warm Branch downstream additional heater for further heating of the air flow before applying the laundry.
  • DE 35 09 549 A1 shows a device for drying laundry, which in addition to a heat pump has a further heating device and additional heat transport devices such as gravitation heat pipes.
  • the input described apparatus and method according to EP 1 342 828 A2 have a disadvantage in that only the heat pump is available for heating the circulating process air flow. Also, the heat pump must pump the heat from its cooling channel to its heating channel via a significant temperature difference - at the outlet of the cooling channel prevails a temperature that is less than the temperature of the environment of the device is. With the corresponding cooling of the secondary air flow, it may optionally come to condensation of moisture in the secondary air flow, which may lead to a burden of the device with unwanted moisture and hygienic problems under certain circumstances.
  • An object of the invention to be disclosed below is to provide the apparatus and method according to the EP 1 342 828 A2 be further developed so that an improved heating of the process air flow and a better operating point of the heat pump can be achieved.
  • a device for drying laundry comprising a substantially closed first channel system for guiding a process air flow acting on the laundry, in which first channel system a treatment chamber for receiving the laundry, a first fan for driving the process air flow, a first Cooling channel of a heat exchanger and a second heating channel of a heat pump are disposed, wherein the second heating channel along the process air flow is behind the first cooling channel, and an open second channel system for guiding a secondary air flow, in which second channel system, a second fan for driving the secondary air flow, a first heating channel of the heat exchanger and a second cooling channel of the heat pump are arranged, and in which device in the first channel system, a heater for heating the process air stream is arranged, and the second cooling channel along the Seku the air flow is behind the first heating channel.
  • a method for drying laundry is also carried out by means of a process air stream guided in a substantially closed first channel system and acting on the laundry in a treatment chamber, which is cooled in a heat exchanger by a secondary air flow guided in an open second channel system and thereafter is heated by a heat pump with cooling of the secondary air flow, in which method the process air flow is heated by a heater arranged in the first channel system and the cooling of the secondary air flow takes place behind the heat exchanger.
  • the process air flow is heated not only by the heat pump, but also by a special heater, which according to conventional practice can be designed as an electrical resistance heater.
  • the heat pump is inserted into the second channel system for the secondary air flow so that it does not cool the secondary air flow until it has absorbed heat from the process air flow in the heat exchanger and thus lost relative humidity. Therefore, the heat exchanging components of the heat pump are exposed to moisture exposure only to a small extent, resulting in a particularly low tendency to corrosion and, accordingly, an advantage of extended life.
  • a sufficiently good efficiency of the heat exchanger assumed - the process air flow and the secondary air flow with a particularly low temperature difference in the corresponding channels heat pump, so that they can work at relatively low, averaged over their entire active volume temperature difference and thus particularly favorable conditions. This ensures a good efficiency of the heat pump.
  • the heat introduced by the heater into the process air flow is no longer or less completely lost in the secondary air flow in the device according to the invention or in the method according to the invention, but is recovered with the heat pump and returned to the process air flow. Even if this recovery is not complete, but can be achieved by suitable design of the heater, the heat exchanger and the heat pump that the device meets the requirements of the known energy consumption class A.
  • a preferred embodiment of the device is characterized in that the heater along the process air flow is arranged immediately in front of the treatment chamber. Such an undesirable loss of heat is kept low.
  • the first fan along the process air flow is located immediately in front of the heater; so that the thermal load of the fan remains very small.
  • the second fan is arranged along the secondary air flow in front of the first heating channel. This arrangement is particularly favorable for the construction of the device.
  • first and second blowers should be noted that they have proven themselves in prior art devices, but are not necessarily mandatory for the functional success of the device according to the invention.
  • Other arrangements for example, the first fan behind instead of in front of the drum or the second blower behind instead of before the first heating channel, are conceivable and, in particular depending on the arrangement of the components of the device in a conventional housing for a corresponding domestic appliance, also advantageous.
  • the first channel system has a separator on the outlet side of the first cooling channel for separating moisture from the process air stream; This can be easily separated and disposed of in a simple and convenient way resulting in the heat exchanger condensate from the process air stream.
  • the separator can be constructively connected to the heat exchanger according to current practice.
  • separation of the condensate from the process air flow is an important criterion for achieving high efficiency, since in the process air flow remaining condensate must be evaporated again in the subsequent heating of the process air flow, which requires additional energy and thus the efficiency impaired the device during operation.
  • the heater and the heat exchanger are set up for drying the laundry without using the heat pump.
  • This development is favorable because it allows operation even without the heat pump as at least unusual component, albeit with some loss in terms of the energy to be used.
  • the device thus achieves reliability as it would for a conventional clothes dryer is usual, without it depends on the characteristics of the heat pump used.
  • the heater is designed for a maximum heating power of at most 2700 W, in particular about 2000 W.
  • the heat exchanger has a cooling capacity of at least 1000 W, in particular about 1500 W.
  • a particularly preferred development of the device has a heat pump with a thermoelectric pump unit.
  • a pumping unit is very compact and simple, and therefore particularly suitable for use in a device designed as a tumble dryer.
  • the particularly low load on the heat exchanging components has a particularly advantageous effect in such a heat pump, since in this case the problem of avoiding an impairment of the electrical components, the concept of the heat exchange components are immediately adjacent, to a much lesser extent than in such a heat pump in a device of the prior art.
  • thermoelectric pumping unit to be used in accordance with the invention has a power consumption of about 500 W, the heater in the corresponding apparatus being arranged for optional operation at a high level with a power consumption of about 2000 W and at a low level with a power consumption of about 500 W, and wherein the heater and the pumping unit are arranged to control such that the pumping unit is operated in unison with the heater.
  • the device 1 for drying laundry 2 according to FIG. 1 is a substantially closed first channel system 3, in which a process air stream 4 (symbolized by a straight arrow outside the channel system 3) circulates.
  • a treatment chamber 5 in the form of a rotatable drum 5 is provided for receiving the laundry 2.
  • the laundry 2 is introduced into the drum 5 and there acted upon by the process air stream 4.
  • the process air stream 4 is driven by a first blower 6, which is part of the first duct system 3.
  • a first heating channel 8 in the heat exchanger 7, 8 is acted upon by a secondary air flow 13 (likewise symbolized by a straight arrow) guided into an open second channel system 12, which is driven by a second fan 14.
  • the secondary air stream 13 absorbs heat from the process air stream 4 in the heat exchanger 7, 8.
  • a heat pump 9, 10, 11 comprising a second heating channel 9, in which the process air stream 4 passes, a second cooling channel 11, in which the secondary air flow 13 passes, and a pump unit 10, which internal heat exchanger of the heat pump 9, 10, 11, which are arranged in the channels 9 and 11 and heat or cool the flowing air flows, applied.
  • process air stream 4 is reheated, by heat, which is taken according to the bent arrow the secondary air stream 13 in the second cooling channel 11, and in addition the waste heat, the is generated during operation of the heat pump 9, 10, 11.
  • the process air stream 4 in the heat pump 9, 10, 11 is reheated. He then passes to the first fan 6 and from this to a conventional heater 15. There, it is further heated and finally returns to the treatment chamber 5.
  • the secondary air stream 13 is taken from an environment of the device 1 and passes back into this environment, after he has passed through the second channel system 12.
  • it is first heated by heat, which is taken from the process air stream 4.
  • the secondary air stream 13 is cooled again, so that the heat that was taken from the process air stream 4 in the heat exchanger 7, 8, this at least partially re-flows.
  • FIG. 2 shows a section of the in FIG. 1 recognizable device. Shown are the heat exchanger 7, 8, the heat pump 9, 10, 11 and a separator 16 for separating condensate, which has formed in the process air stream 4 after flowing through the first cooling channel 7.
  • the heat pump 9, 10, 11 comprises two internal heat exchangers, which form the second heating channel 9 and the second cooling channel 11, and a pump unit 10, which contains a compressor and a throttle. Accordingly, the heat pump 9, 10, 11 a compressor heat pump, as it is known from a conventional refrigerator or freezer.
  • thermoelectric heat pump 9, 10, 11 the pump unit 10 includes a circuit with Peltier elements, which are to be understood as special electronic components.
  • a Peltier element has two poles between which a temperature difference arises when an electric current flows from one pole to the other pole.
  • the integration of such Peltier elements in a pump unit 10 is basically known and requires this point no explanation.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)

Claims (14)

  1. Dispositif (1) de séchage de linge (2), comprenant un premier système de canaux (3) essentiellement fermé, destiné à guider un flux d'air de procédé (4) alimentant le linge (2), dans lequel premier système de canaux (3) sont disposés une chambre de traitement (5) pour loger le linge (2), un premier ventilateur (6) pour entraîner le flux d'air de procédé (4), un premier canal de refroidissement (7) d'un échangeur de chaleur (7, 8) et un second canal de chauffage (9) d'une pompe à chaleur (9, 10, 11), le second canal de chauffage (9) étant situé le long du flux d'air de procédé (4) derrière le premier canal de refroidissement (7), ainsi qu'un second système de canaux (12) ouvert pour guider un flux d'air secondaire (13), dans lequel second système de canaux (12) sont disposés un second ventilateur (14) pour entraîner le flux d'air secondaire (13), un premier canal de chauffage (8) de l'échangeur de chaleur (7, 8) et un second canal de refroidissement (11) de la pompe à chaleur (9, 10, 11), un dispositif de chauffage (15) étant disposé dans le premier système de canaux (3) pour chauffer le flux d'air de procédé (4), caractérisé en ce que le second canal de refroidissement (11) est situé le long du flux d'air secondaire (13) derrière le premier canal de chauffage (8).
  2. Dispositif (1) selon la revendication 1, dans lequel le dispositif de chauffage (15) est disposé le long du flux d'air de procédé (4) directement devant la chambre de traitement (5).
  3. Dispositif (1) selon la revendication 2, dans lequel le premier ventilateur (6) est disposé le long du flux d'air de procédé (4) directement devant le dispositif de chauffage (15).
  4. Dispositif (1) selon l'une quelconque des revendications précédentes, dans lequel le second ventilateur (14) est disposé le long du flux d'air secondaire (13) devant le premier canal de chauffage (8).
  5. Dispositif (1) selon l'une quelconque des revendications précédentes, dans lequel le premier système de canaux (3) présente, en aval du premier canal de refroidissement (7), un séparateur (16) destiné à séparer l'humidité du flux d'air de procédé (4).
  6. Dispositif (1) selon la revendication 1, dans lequel la chambre de traitement (5) est rotative et est notamment réalisée en tant que tambour (5).
  7. Dispositif (1) selon l'une quelconque des revendications précédentes, dans lequel le dispositif de chauffage (15) et l'échangeur de chaleur (7, 8) sont agencés pour le séchage du linge (2) sans utiliser la pompe à chaleur (9, 10, 11).
  8. Dispositif (1) selon l'une quelconque des revendications précédentes, dans lequel le dispositif de chauffage (15) est conçu pour une puissance de chauffage maximale de maximum 2700 W, notamment d'environ 2000 W.
  9. Dispositif (1) selon l'une quelconque des revendications précédentes, dans lequel l'échangeur de chaleur (7, 8) a une puissance de refroidissement d'au moins 1000 W, notamment d'environ 1500 W.
  10. Dispositif (1) selon l'une quelconque des revendications précédentes, dans lequel la pompe à chaleur (9, 10, 11) a une puissance absorbée comprise entre 200 W et 800 W, notamment d'environ 500 W.
  11. Dispositif (1) selon l'une quelconque des revendications précédentes, dans lequel la pompe à chaleur (9, 10, 11) présente une unité de pompe thermoélectrique (10).
  12. Dispositif (1) selon la revendication 11, dans lequel l'unité de pompe (10) a une puissance absorbée d'environ 500 W, et dans lequel le dispositif de chauffage (15) est agencé pour le fonctionnement au choix sur un échelon élevé avec une puissance absorbée d'environ 2000 W et sur un échelon faible avec une puissance absorbée d'environ 500 W, le dispositif de chauffage (15) et l'unité de pompe (10) étant agencés pour la commande de manière à ce que l'unité de pompe (10) fonctionne en commun avec le dispositif de chauffage (15).
  13. Procédé de séchage de linge (2) au moyen d'un flux d'air de procédé (4) guidé dans un premier système de canaux (3) essentiellement fermé et alimentant le linge (2) se trouvant dans une chambre de traitement (5), lequel flux d'air de procédé est refroidi dans un échangeur de chaleur (7, 8) au moyen d'un flux d'air secondaire (13) guidé dans un second système de canaux ouvert (12) et est ensuite chauffé par une pompe à chaleur (9, 10, 11) par refroidissement du flux d'air secondaire (13), le flux d'air de procédé (4) étant chauffé par un dispositif de chauffage (15) disposé dans le premier système de canaux (3), caractérisé en ce que le refroidissement du flux d'air secondaire (13) est réalisé derrière l'échangeur de chaleur (7, 8).
  14. Procédé selon la revendication 13, dans lequel la pompe à chaleur (9, 10, 11) fonctionne en même temps que le dispositif de chauffage (15).
EP07788476A 2006-09-13 2007-08-17 Dispositif et procédé de séchage de linge comprenant une pompe à chaleur et un échangeur thermique Not-in-force EP2069566B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006042991A DE102006042991A1 (de) 2006-09-13 2006-09-13 Vorrichtung und Verfahren zum Trocknen von Waschgut mit einer Wärmepumpe und einem Wärmetauscher
PCT/EP2007/058562 WO2008031688A1 (fr) 2006-09-13 2007-08-17 Dispositif et procédé de séchage de linge comprenant une pompe à chaleur et un échangeur thermique

Publications (2)

Publication Number Publication Date
EP2069566A1 EP2069566A1 (fr) 2009-06-17
EP2069566B1 true EP2069566B1 (fr) 2010-04-07

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EP07788476A Not-in-force EP2069566B1 (fr) 2006-09-13 2007-08-17 Dispositif et procédé de séchage de linge comprenant une pompe à chaleur et un échangeur thermique

Country Status (5)

Country Link
US (1) US20100083524A1 (fr)
EP (1) EP2069566B1 (fr)
AT (1) ATE463608T1 (fr)
DE (2) DE102006042991A1 (fr)
WO (1) WO2008031688A1 (fr)

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DE102006026251A1 (de) * 2006-06-06 2007-12-13 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung und Verfahren zum Trocknen von Waschgut
DE102008044277A1 (de) * 2008-12-02 2010-06-10 BSH Bosch und Siemens Hausgeräte GmbH Trockner mit einer Wärmepumpe und einer elektrischen Heizung sowie Verfahren zu seinem Betrieb
ES2414408T3 (es) * 2009-06-29 2013-07-19 Arçelik Anonim Sirketi Secadora de ropa cuya eficacia de secado se incrementa mediante el uso de diferentes fuentes de calor
EP2372012B1 (fr) * 2010-03-30 2016-08-31 DBK David + Baader GmbH Unité de condensateur, appareil domestique, et procédé de contrôle de cet appareil domestique
DE102010043455A1 (de) * 2010-11-05 2012-05-10 BSH Bosch und Siemens Hausgeräte GmbH Trocknungseinrichtung und Hausgerät mit einer solchen Trocknungseinrichtung
ITRN20110055A1 (it) * 2011-08-05 2013-02-06 Indesit Co Spa Elettrodomestico
EP2631351A1 (fr) 2012-02-23 2013-08-28 Electrolux Home Products Corporation N.V. Séchoir à linge
EP2796613B1 (fr) * 2013-04-23 2020-11-11 Whirlpool Corporation Sèche-linge ou lave-linge sèche-linge et procédé pour son fonctionnement
KR102364673B1 (ko) 2014-10-28 2022-02-18 엘지전자 주식회사 의류처리장치 및 그 제어방법
EP3257425B1 (fr) * 2015-02-12 2020-09-16 Foshan Shunde Midea Washing Appliances Mfg. Co., Ltd. Machine à laver la vaisselle
DE102016214753A1 (de) * 2016-08-09 2018-02-15 BSH Hausgeräte GmbH Wäschebehandlungsgerät
TR201721922A2 (tr) 2017-12-26 2019-07-22 Arcelik As Kurutmali çamaşir maki̇neleri̇nde isi pompasi si̇stemi̇

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DE3113471A1 (de) * 1981-04-03 1982-10-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Trockengeraet mit waermepumpe
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DE4434205A1 (de) * 1994-08-31 1996-03-07 Joerg Sdrojewski Wäschetrockner
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KR100504503B1 (ko) * 2003-01-14 2005-08-01 엘지전자 주식회사 공기조화시스템

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Publication number Publication date
ATE463608T1 (de) 2010-04-15
DE102006042991A1 (de) 2008-03-27
US20100083524A1 (en) 2010-04-08
DE502007003423D1 (de) 2010-05-20
WO2008031688A1 (fr) 2008-03-20
EP2069566A1 (fr) 2009-06-17

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