EP2065509A1 - Sèche-linge à évacuation d'air doté d'une pompe à chaleur et d'un premier ventilateur - Google Patents

Sèche-linge à évacuation d'air doté d'une pompe à chaleur et d'un premier ventilateur Download PDF

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Publication number
EP2065509A1
EP2065509A1 EP08105727A EP08105727A EP2065509A1 EP 2065509 A1 EP2065509 A1 EP 2065509A1 EP 08105727 A EP08105727 A EP 08105727A EP 08105727 A EP08105727 A EP 08105727A EP 2065509 A1 EP2065509 A1 EP 2065509A1
Authority
EP
European Patent Office
Prior art keywords
exhaust air
dryer
air
exhaust
blower
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.)
Withdrawn
Application number
EP08105727A
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German (de)
English (en)
Inventor
Klaus Grunert
Thomas Nawrot
Günter Steffens
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 EP2065509A1 publication Critical patent/EP2065509A1/fr
Withdrawn legal-status Critical Current

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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
    • D06F58/20—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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 

Definitions

  • the invention relates to an exhaust air dryer with a drying chamber for objects to be dried, a supply air duct in front of the drying chamber, a first fan for the supply of process air from a Zu Kunststoffeingang to the drying chamber and to an exhaust outlet, an exhaust duct between the drying chamber and the exhaust outlet, and a heat pump with a heat sink in the exhaust duct, and a heat source in the supply air duct.
  • a clothes dryer is operated as an exhaust or condensation dryer.
  • An exhaust air dryer provides only a stream of heated process air, which is passed once through the presented in a drying chamber laundry, thereby absorbs moisture from the laundry and then removed from the exhaust air dryer.
  • Such discharging is usually carried out by means of an exhaust hose to prevent moisture from the exhaust air in the building in which the exhaust air dryer is installed, precipitated.
  • a condensation dryer whose operation is based on the condensation of the evaporated by means of warm process air moisture from the laundry, repeatedly leads the process air over the laundry to be dried, requires no exhaust hose and thereby also allow energy recovery from the heated process air, for example by using a heat pump.
  • an exhaust air dryer In an exhaust air dryer, the air laden with moisture after passing through a laundry drum is passed out of the dryer, heat recovery generally not taking place. From the aforementioned excerpt and the document DE 30 00 865 A1 In each case an exhaust air dryer with heat recovery is known.
  • ambient air of, for example, 20 ° C. and 60% relative humidity, so-called supply air
  • the heat exchanger eg air-air heat exchanger
  • the moist process air is cooled, so that the water contained in the moist process air condenses.
  • the cooling capacity or the heat exchange condensate which is collected or pumped away in a container (condensate tray) for later disposal.
  • a condensation dryer with a closed drying air circuit which is equipped with a heat pump.
  • the heat pump is designed as a device operating according to the absorber principle whose absorber forms a third heat exchanger whose primary circuit is flowed through by a refrigerant and via whose secondary circuit the drying air flowing away from the second heat exchanger is fed back to the secondary circuit of the first heat exchanger.
  • An exhaust air dryer generally uses a blower to convey the process air (supply air and exhaust air).
  • a conventional exhaust air dryer, as well as a conventional condensation dryer generally has a motor which drives together both the drying chamber (laundry drum) and the fan.
  • the heat exchangers of the heat pump i. Evaporator and condenser
  • Evaporator and condenser usually arranged one behind the other, so that they can be flowed through by the process air in a straight path in succession.
  • This allows a very efficient and space-saving arrangement of the components of the dryer.
  • the installation of a heat pump in a vented dryer is associated with a much greater effort, since in an exhaust air dryer with heat pump condenser and evaporator are functionally clearly separated from each other in a heat recovery from the exhaust air of the dryer and must be additionally connected with air ducts. This is usually at the expense of the size of the heat exchanger and thus their performance.
  • Object of the present invention is therefore to provide a vented dryer with a heat pump, which can work effectively even with an unfavorable arrangement of the heat exchanger of the heat pump.
  • the invention thus relates to an exhaust air dryer with a drying chamber for objects to be dried, a supply air duct in front of the drying chamber, a first fan for the supply of process air from a Zu Kunststoffeingang to the drying chamber and to an exhaust outlet, an exhaust duct between the drying chamber and the exhaust outlet, and a heat pump with a heat sink in the exhaust duct, and a heat source in the supply air duct, wherein according to the invention, the first fan in the supply air duct between the air inlet and the heat source and a second fan in the supply air duct between the heat source and the drying chamber is arranged.
  • the invention utilizes two blowers connected in series in order to achieve a high delivery rate for the necessary process air even in a disadvantageous arrangement of heat source and heat sink.
  • This has the advantage that, with the same thermal performance, the throughput of process air can be increased and thus a faster drying of the objects submitted can be achieved. Due to the increased speed of the process air due to the increased delivery capacity, the heat transfer between the process air and the components of the heat pump also becomes improves the efficiency of the heat pump. As a result, a shortening of the drying time is achieved in the dryer according to the invention.
  • the drying chamber is a drum rotatable by a motor.
  • the heat sink is an evaporator and the heat source is a condenser
  • the heat pump has a compressor and a throttle, which are combined with the evaporator and the condenser to a closed circuit for a refrigerant.
  • This heat pump is known per se as a "compressor heat pump”.
  • the throttle may be a throttle or relief valve, a capillary or a nozzle.
  • the refrigerant is preferably selected from the group comprising the refrigerants R134a, R152a, R290, R407C and R410A.
  • refrigerants other than R290 are fluorinated hydrocarbons or mixtures of fluorinated hydrocarbons;
  • R290 is hydrocarbon propane which, although relatively flammable, would be very well suited as a refrigerant in the present context because of its technical properties and is quite compatible with the environment.
  • the invention is not limited to any particular type of heat pump;
  • the prior art knows many other heat pumps except the compressor heat pump, all of which are suitable for use within the scope of the invention, as far as they are able to generate the required for the drying of objects, especially laundry, temperatures with sufficient thermal performance.
  • the air flow rate of first and second blower can vary widely. Preferably, however, the air flow rate of the first blower V 1 is smaller than the air flow rate of the second blower V 2 .
  • the air delivery rate of the first blower V 1 is preferably from 30 to 200 m 3 / h, in particular from 50 to 150 m 3 / h, and the air delivery rate of the second blower V 2 from 150 to 850 m 3 / h, in particular from 200 to 750 m 3 / h.
  • a further heating possibility for heating the supply air is used.
  • a heater is present in the supply air duct of the exhaust dryer.
  • the heater includes in particular a gas or electric heater.
  • the heating is appropriately regulated, that is to say in accordance with the invention. As the degree of drying progresses, its heat output is reduced. It is particularly preferred to use the heater only in a heating phase immediately after the start of the exhaust air dryer and then if possible only to use the heat pump to apply the necessary heating power.
  • the first blower V 1 and the second blower V 2 are operated by the same engine.
  • the first fan V 1 and the second fan V 2 are arranged on opposite sides of the engine.
  • the single motor also drives the drying chamber formed as a rotatable drum.
  • the exhaust air dryer according to the invention has the advantage that the heat exchangers of the heat pump can work very efficiently, in particular energy-efficient. Moreover, the invention allows rapid heating of supply air.
  • a supply air flow can be suitably varied by the use of two blowers. For example, first a small supply air flow can be heated to a desired temperature using a single blower. Once this has been achieved, the supply air flow can be increased by switching on a further blower.
  • FIG. 1 shows a vertically cut exhaust air dryer (hereinafter abbreviated to "dryer”), in which in the supply air duct next to the first and second blower, inter alia, a heater is arranged.
  • dryer vertically cut exhaust air dryer
  • FIG. 2 shows a schematic section of an embodiment of an exhaust air dryer.
  • the connecting lines between the drying chamber and the first and second blowers are intended to illustrate the realization of a single engine concept. Here the heating is omitted.
  • the in FIG. 1 shown dryer 1 has a drum 3 rotatable about a horizontal axis as a drying chamber 3, are mounted within which driver 4 for moving laundry during rotation.
  • Supply air is sucked from a supply air inlet 19 by means of a first blower (V 1 ) 15 and after passing through the condenser 11, which is the heat source 11 of a heat pump 11,12,13,14, by means of a second blower (V 2 ) 16 in the Drying chamber 3 pressed.
  • V 1 first blower
  • V 2 second blower
  • the supply air is heated by the condenser 11 and a heater 18 (designed here as an electrical resistance heater 18) and fed into the drum 3 as a heated supply air.
  • the transferred from the condenser 11 heat comes from the evaporator 14, in which the passing of the drum 3 warm, moisture-laden air is cooled with evaporation of a refrigerant. After passing through the evaporator 14, the cooled air is supplied via the exhaust duct 10 to the exhaust air outlet 20. It is to be expected that the cooling of the air in the evaporator 14 is performed so far that condenses moisture contained as vapor and precipitated as liquid condensate. For the controlled collection of such condensate for the purpose of subsequent disposal is taken into account in a conventional manner; corresponding funds are not shown for clarity.
  • the evaporated refrigerant in the evaporator 14 of the heat pump 11, 12, 13, 14 is passed through a compressor 13 to the condenser 11.
  • the refrigerant liquefies with release of heat to the entering through the Zu Kunststoffeingang 19 supply air in the supply air channel 2.
  • the now in liquid form refrigerant is again passed through a throttle 12 to the evaporator 14, whereby the refrigerant circuit is closed.
  • the supply air which has been heated as described above, is conducted from the side of the drum 3 opposite a door 5 through its perforated bottom into the drum 3, where it comes into contact with laundry to be dried.
  • the laden with moisture warm process air is cooled as exhaust air in the exhaust duct 10 in the evaporator 14.
  • the warm process air initially flows through the filling opening of the drum 3 to a lint filter 6 within a door closing the filling opening 5.
  • the air flow in the door 5 is deflected downward and directed in the exhaust duct 10 to the evaporator 14, where moisture contained condenses out as described , Subsequently, the dehumidified exhaust air is passed through the exhaust air outlet 20 in the installation room of the dryer 1.
  • the drum 3 is in the in Fig. 1 shown embodiment at the rear bottom by means of a pivot bearing and front mounted by means of a bearing plate 7, wherein the drum 3 rests with a brim on a sliding strip 8 on the bearing plate 7 and is held at the front end.
  • the control of the exhaust air dryer via a control device 21, which can be controlled by the user via an operating unit 9.
  • FIG. 2 shows a schematic section of a further embodiment of an exhaust air dryer according to the invention.
  • the heater is omitted.
  • the supply air is sucked from the installation room of the exhaust air dryer via the Zu Kunststoffeingang 19 by means of the first blower (V 1 ) 15 and after passing through the condenser 11 of the heat pump with the aid of the second blower (V 2 ) 16 further to the drying chamber 3.
  • the connecting lines between the drum 3 and the first blower 15 and the second blower 16 are intended to illustrate the realization of a single engine concept in which the first blower 15, the second blower 16 and the drum 3 are driven by a motor 22 (not shown) FIG. 1 ) are driven.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP08105727A 2007-11-30 2008-11-04 Sèche-linge à évacuation d'air doté d'une pompe à chaleur et d'un premier ventilateur Withdrawn EP2065509A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007057766A DE102007057766A1 (de) 2007-11-30 2007-11-30 Ablufttrockner mit einer Wärmepumpe und einem ersten Gebläse

Publications (1)

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EP2065509A1 true EP2065509A1 (fr) 2009-06-03

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EP08105727A Withdrawn EP2065509A1 (fr) 2007-11-30 2008-11-04 Sèche-linge à évacuation d'air doté d'une pompe à chaleur et d'un premier ventilateur

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US (1) US20090139107A1 (fr)
EP (1) EP2065509A1 (fr)
DE (1) DE102007057766A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2343411A1 (fr) * 2010-01-07 2011-07-13 Miele & Cie. KG Sèche-linge doté d'une pompe à chaleur

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005013051A1 (de) * 2005-03-18 2006-09-21 BSH Bosch und Siemens Hausgeräte GmbH Kondensations-Wäschetrockner
US8015726B2 (en) * 2005-06-23 2011-09-13 Whirlpool Corporation Automatic clothes dryer
DE102006020003A1 (de) * 2006-04-26 2007-10-31 Herbert Kannegiesser Gmbh Verfahren zur Rückgewinnung der von Wäschereimaschinen abgegebenen Wärmeenergie
DE102007052839A1 (de) * 2007-11-06 2009-05-07 BSH Bosch und Siemens Hausgeräte GmbH Trockner mit Wärmepumpenkreis
US8601717B2 (en) 2010-07-26 2013-12-10 General Electric Company Apparatus and method for refrigeration cycle capacity enhancement
US8528227B2 (en) 2010-07-26 2013-09-10 General Electric Company Apparatus and method for refrigerant cycle capacity acceleration
US8353114B2 (en) 2010-07-26 2013-01-15 General Electric Company Apparatus and method for refrigeration cycle with auxiliary heating
DE102011078922A1 (de) * 2011-07-11 2013-01-17 BSH Bosch und Siemens Hausgeräte GmbH Abluft-Wäschetrocknung mit Zusatzheizung und Wärmetauscheraggregat
DE102012212159A1 (de) * 2012-07-11 2014-01-16 BSH Bosch und Siemens Hausgeräte GmbH Abluft-Wäschetrocknung mit Zusatzheizung und Wärmetauscheraggregat
EP3147507A1 (fr) 2015-09-25 2017-03-29 BSH Hausgeräte GmbH Compresseur rotatif pour pompe à chaleur
CN107906914A (zh) * 2017-11-21 2018-04-13 成都凯隆机械维修有限公司 节能干燥传送带
DE102018201257A1 (de) * 2018-01-29 2019-08-01 BSH Hausgeräte GmbH Gerät zum Trocknen von Wäsche und Verfahren zum Betreiben einer Wärmepumpe eines solchen Geräts
DE102018203158A1 (de) * 2018-03-02 2019-09-05 BSH Hausgeräte GmbH Gerät zum Trocknen von Wäsche
US11065575B2 (en) * 2018-07-05 2021-07-20 Molecule Works Inc. Membrane device for water and energy exchange

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3000865A1 (de) 1980-01-11 1981-07-16 Fichtel & Sachs Ag, 8720 Schweinfurt Waeschetrockner mit waermerueckgewinnung
DE4023000A1 (de) * 1990-07-19 1992-01-23 Bosch Siemens Hausgeraete Waeschetrockner mit einem waermepumpenkreis
DE19738735C2 (de) 1997-09-04 2003-02-20 Bsh Bosch Siemens Hausgeraete Kondensationstrockner mit einem geschlossenen Trocknungsluftkreislauf
JP2004089415A (ja) 2002-08-30 2004-03-25 Matsushita Electric Ind Co Ltd 衣類乾燥装置
DE4306217B4 (de) 1993-02-27 2004-04-22 AEG Hausgeräte GmbH Programmgesteuerter Wäschetrockner mit einem Wärmepumpenkreis
JP2004239549A (ja) * 2003-02-07 2004-08-26 Matsushita Electric Ind Co Ltd 衣類乾燥装置
US20050246920A1 (en) * 2004-05-06 2005-11-10 Matsushita Electric Industrial Co., Ltd. Clothes dryer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4621438A (en) * 1980-12-04 1986-11-11 Donald M. Thompson Energy efficient clothes dryer
MY115384A (en) * 1994-12-06 2003-05-31 Sharp Kk Drum type washing machine and drier
KR100955484B1 (ko) * 2003-04-30 2010-04-30 삼성전자주식회사 세탁기 및 그 건조 제어방법

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3000865A1 (de) 1980-01-11 1981-07-16 Fichtel & Sachs Ag, 8720 Schweinfurt Waeschetrockner mit waermerueckgewinnung
DE4023000A1 (de) * 1990-07-19 1992-01-23 Bosch Siemens Hausgeraete Waeschetrockner mit einem waermepumpenkreis
DE4023000C2 (de) 1990-07-19 2003-02-27 Bsh Bosch Siemens Hausgeraete Wäschetrockner mit einem Wärmepumpenkreis
DE4306217B4 (de) 1993-02-27 2004-04-22 AEG Hausgeräte GmbH Programmgesteuerter Wäschetrockner mit einem Wärmepumpenkreis
DE19738735C2 (de) 1997-09-04 2003-02-20 Bsh Bosch Siemens Hausgeraete Kondensationstrockner mit einem geschlossenen Trocknungsluftkreislauf
JP2004089415A (ja) 2002-08-30 2004-03-25 Matsushita Electric Ind Co Ltd 衣類乾燥装置
JP2004239549A (ja) * 2003-02-07 2004-08-26 Matsushita Electric Ind Co Ltd 衣類乾燥装置
US20050246920A1 (en) * 2004-05-06 2005-11-10 Matsushita Electric Industrial Co., Ltd. Clothes dryer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2343411A1 (fr) * 2010-01-07 2011-07-13 Miele & Cie. KG Sèche-linge doté d'une pompe à chaleur

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DE102007057766A1 (de) 2009-06-04
US20090139107A1 (en) 2009-06-04

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