DE4306215A1 - Program-controlled laundry drier with a heat-pump circuit - Google Patents

Program-controlled laundry drier with a heat-pump circuit

Info

Publication number
DE4306215A1
DE4306215A1 DE4306215A DE4306215A DE4306215A1 DE 4306215 A1 DE4306215 A1 DE 4306215A1 DE 4306215 A DE4306215 A DE 4306215A DE 4306215 A DE4306215 A DE 4306215A DE 4306215 A1 DE4306215 A1 DE 4306215A1
Authority
DE
Germany
Prior art keywords
evaporator
process air
condenser
pump circuit
heat
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.)
Ceased
Application number
DE4306215A
Other languages
German (de)
Inventor
Hans-Joachim Dipl Ing Klug
Ernst-Ludwig Dipl Ing Schmidt
Harry Dipl Ing Fritz
Wolfgang Dr Phil Schaper
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.)
AEG Hausgeraete GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE4306215A priority Critical patent/DE4306215A1/en
Publication of DE4306215A1 publication Critical patent/DE4306215A1/en
Ceased legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

Program-controlled laundry drier with a laundry drum (1), in which the process air is conveyed through the laundry drum in a closed process-air channel (7) by means of a blower (8), and with a heat-pump circuit (2) which is designed for precipitating the moisture carried out of the laundry drum in the process air and which consists of an evaporator (3), compressor (5) and condenser (4). In order to achieve a relief of the heat-pump circuit by utilising the temperature gradient in the conveyed process air, there is provided as a further device, in addition to the evaporator (3) and condenser (4) arranged in the process-air channel (7), a preheat exchanger (9) which in terms of flow precedes both the evaporator (3) and the condenser (4). <IMAGE>

Description

Die Erfindung betrifft einen programmgesteuerten Wäschetrockner nach dem Oberbegriff des Patentanspruchs.The invention relates to a program-controlled Clothes dryer according to the preamble of the claim.

Ein Wäschetrockner dieser Art ist aus der DE 40 23 000 A1 bekannt. Bei diesem Wäschetrockner sind im Prozeßluftkanal ein Verdampfer und ein Kondensator (Verflüssiger) eines Wärmepumpenkreises gelegt. Die die Wäschetrommel verlassende feuchtwarme Prozeßluft wird hier zunächst dem Verdampfer zugeführt. Im Verdampfer wird dieser Prozeßluft Energie entzogen, wodurch eine Abkühlung und damit verbunden die erforderliche Entfeuchtung erreicht wird. Nach dem Verdampfer passiert die Prozeßluft den Kondensator und wird dort wieder auf ihre Ausgangs- bzw. Betriebstemperatur erwärmt. Alle gezielten Vorgänge des Wärmetauschens erfolgen bei einem solchen Wärmepumpenkreis in Verbindung mit dem Arbeitsmittel im Wärmepumpenkreislauf und müssen letztlich von der Wärmepumpe allein geleistet werden.A tumble dryer of this type is known from DE 40 23 000 A1 known. This tumble dryer is in the process air duct an evaporator and a condenser (condenser) one Heat pump circuit. The washing drum leaving moist, warm process air is here the first Evaporator fed. This process air is in the evaporator Deprived of energy, causing a cooling and thus connected the required dehumidification is achieved. After the evaporator, the process air passes the condenser and is there again on their starting or Operating temperature warmed up. All targeted operations of the Heat exchange takes place in such a heat pump circuit in connection with the working fluid in the heat pump cycle and ultimately have to be done by the heat pump alone become.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, zwecks Optimierung des Trocknungsprozesses eine Entlastung des Wärmepumpenkreislaufs durch Ausnützung des Temperaturgefälles in der geförderten Prozeßluft herbeizuführen.The invention is based on this prior art based on the task to optimize the Drying process a relief of the Heat pump cycle by using the Temperature drop in the conveyed process air  bring about.

Die Lösung der gestellten Aufgabe gemäß der Erfindung ist dem kennzeichnenden Teil des Patentanspruchs zu entnehmen.The solution of the problem according to the invention is can be found in the characterizing part of the patent claim.

Durch die vorgeschlagene Maßnahme wird der Wärmepumpenkreislauf entlastet, indem ein Teil des Wärmetausches innerhalb des Prozeßluftstroms selbst durchgeführt wird.The proposed measure will Relieved heat pump cycle by part of the Heat exchange within the process airflow itself is carried out.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird anhand dieser nachfolgend näher beschrieben.An embodiment of the invention is in the drawing is shown and will be described in more detail below described.

Die Zeichnung zeigt in schematischer Darstellung den Aufbau einer Wärmepumpenanlage für einen Wäschetrockner.The drawing shows the structure in a schematic representation a heat pump system for a tumble dryer.

Der in Rede stehende Wäschetrockner mit einem Wärmepumpenkreis hat für die Aufnahme der zu trocknenden Wäsche eine antreibbare Wäschetrommel 1, die von einem Warmluftstrom (Prozeßluftstrom) entsprechend den Pfeilen durchströmt wird. Der Prozeßluftstrom ist in einem geschlossenen Prozeßluftkanal 7 im Kreislauf geführt. Der Kältekreislauf 2 des Wärmepumpenkreises enthält einen Verdampfer 3, einen diesem nachgeordneten Kondensator 4 (Verflüssiger) und einen Kompressor 5 sowie ein Expansionsventil 6. Im Zuge des Prozeßluftkanals 7 ist ein elektromotorisch angetriebenes Gebläse 8 geschaltet, das den Prozeßluftstrom im Prozeßluftkanal 7 im Umlauf hält. Weiterhin ist neben dem Verdampfer 3 und dem Kondensator 4 als weitere Einrichtung im Prozeßluftkanal 7 zweckmäßig ein Vorwärmetauscher 9 vorgesehen, der strömungstechnisch sowohl dem Verdampfer 3 als auch dem Kondensator 4 vorgeschaltet ist.The dryer in question with a heat pump circuit has a drivable laundry drum 1 for receiving the laundry to be dried, through which a hot air stream (process air stream) flows according to the arrows. The process air flow is circulated in a closed process air duct 7 . The cooling circuit 2 of the heat pump circuit contains an evaporator 3 , a condenser 4 (condenser) arranged downstream of it, and a compressor 5 as well as an expansion valve 6 . In the course of the process air duct 7 , an electric motor-driven fan 8 is switched, which keeps the process air flow in the process air duct 7 in circulation. Furthermore, in addition to the evaporator 3 and the condenser 4, a preheater 9 is expediently provided as a further device in the process air duct 7 , which is connected upstream of the evaporator 3 and the condenser 4 .

Die Funktionsweise der vorbeschriebenen Wärmepumpenanlage in Verbindung mit einem Haushalts-Wäschetrockner ist folgende:The operation of the heat pump system described above  in connection with a household clothes dryer the following:

Die die Wäschetrommel 1 über den Prozeßluftkanal 7 verlassende feuchtwarme Prozeßluft gelangt zuerst zum Vorwärmetauscher 9 und wird nach Passieren des Vorwärmetauschers dem nachgeschalteten Verdampfer 3 zugeführt. Nach Passieren des Verdampfers 3 wird der Prozeßluftstrom wiederum über den Vorwärmetauscher 9 geleitet und danach erst dem Kondensator 4 zugeführt. Da der Prozeßluftstrom im Verdampfer 3 eine erhebliche Abfühlung erfährt, ist er aufgrund der eingetretenen Temperaturdifferenz in der Lage, im Vorwärmetauscher 9 den gewünschten Wärmetausch in Gang zu setzen. Der Prozeßluftstrom wird vor Eintritt in den Verdampfer 3 und damit außerhalb des Wärmepumpenkreislaufs (Kältekreislauf 2) im Vorwärmetauscher 9 zunächst abgekühlt, was dann zu einer Entlastung des Verdampfers 3 führt. Vor Eintritt des Prozeßluftstromes in den Kondensator 4 wird dieser im Vorwärmetauscher 9 entsprechend wieder vorgewärmt, was wiederum eine Entlastung des Kondensators mit sich bringt. Durch eine derartige Ausgestaltung der Wärmepumpenanlage sowie Prozeßführung wird eine erhebliche Leistungssteigerung in dieser Anlage erreicht und damit der Wäschetrocknungsprozeß optimiert.The moist, warm process air leaving the laundry drum 1 via the process air duct 7 first reaches the preheater 9 and is passed to the downstream evaporator 3 after passing through the preheater. After passing the evaporator 3 , the process air stream is again passed through the preheater 9 and only then fed to the condenser 4 . Since the process air flow in the evaporator 3 is considerably sensed, it is able to start the desired heat exchange in the preheater 9 due to the temperature difference that has occurred. The process air flow is first cooled in the preheater 9 before entering the evaporator 3 and thus outside the heat pump circuit (refrigeration circuit 2 ), which then leads to a relief of the evaporator 3 . Before the process air flow enters the condenser 4 , it is preheated accordingly in the preheater 9 , which in turn relieves the condenser. Such a design of the heat pump system and process control results in a considerable increase in performance in this system and thus optimizes the laundry drying process.

Claims (1)

Programmgesteuerter Wäschetrockner mit einer Wäschetrommel (1), bei dem die Prozeßluft mittels eines Gebläses (8) in einem geschlossenen Prozeßluftkanal (7) durch die Wäschetrommel gefördert wird, mit einem zum Ausfällen der in der Prozeßluft aus der Wäschetrommel mitgeführten Feuchtigkeit eingerichteten Wärmepumpenkreis (2) aus Verdampfer (3), Kompressor (5) und Kondensator (4), dadurch gekennzeichnet, daß neben den im Prozeßluftkanal (7) angeordneten Verdampfer (3) und Kondensator (4) als weitere Einrichtung ein Vorwärmetauscher (9) vorgesehen ist, der strömungstechnisch sowohl dem Verdampfer (3) als auch dem Kondensator (4) vorgeschaltet ist.Program-controlled tumble dryer with a laundry drum ( 1 ), in which the process air is conveyed through the laundry drum by means of a blower ( 8 ) in a closed process air duct ( 7 ), with a heat pump circuit ( 2 ) set up for failure of the moisture carried in the process air from the laundry drum consisting of evaporator ( 3 ), compressor ( 5 ) and condenser ( 4 ), characterized in that, in addition to the evaporator ( 3 ) and condenser ( 4 ) arranged in the process air duct ( 7 ), a preheater ( 9 ) is provided as a further device, which is fluidically upstream of both the evaporator ( 3 ) and the condenser ( 4 ).
DE4306215A 1993-02-27 1993-02-27 Program-controlled laundry drier with a heat-pump circuit Ceased DE4306215A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4306215A DE4306215A1 (en) 1993-02-27 1993-02-27 Program-controlled laundry drier with a heat-pump circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4306215A DE4306215A1 (en) 1993-02-27 1993-02-27 Program-controlled laundry drier with a heat-pump circuit

Publications (1)

Publication Number Publication Date
DE4306215A1 true DE4306215A1 (en) 1994-09-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE4306215A Ceased DE4306215A1 (en) 1993-02-27 1993-02-27 Program-controlled laundry drier with a heat-pump circuit

Country Status (1)

Country Link
DE (1) DE4306215A1 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1205592A1 (en) * 2000-11-10 2002-05-15 Seven-Air Gebr. Meyer AG Laundry dryer cabinet
GB2375812A (en) * 2001-04-05 2002-11-27 Dbk Technitherm Ltd Drying apparatus with heat exchanger and heat pump
DE19738735C2 (en) * 1997-09-04 2003-02-20 Bsh Bosch Siemens Hausgeraete Condensation dryer with a closed drying air circuit
DE102005062940A1 (en) * 2005-12-29 2007-07-05 BSH Bosch und Siemens Hausgeräte GmbH A method for drying washing has a heat pump by which circulated air through the washing chamber is dried and heated and an additional heat pump evaporator is arranged to predry the circulated air stream
FR2911180A1 (en) * 2007-01-04 2008-07-11 Pierre Brun Hot and humid air treating device for e.g. commercial laundry drier, has air/air heat exchanger and air/liquid exchanger that are placed in series for reheating air from air/liquid exchanger and/or external air with air to be treated
CN1782615B (en) * 2004-11-29 2010-05-05 乐金电子(天津)电器有限公司 Drying device using freezing circulation
US20100307018A1 (en) * 2008-02-27 2010-12-09 I.M.A.T. S.P.A. Heat-Pump Clothes Drying Machine
US7984568B2 (en) * 2005-05-23 2011-07-26 Bsh Bosch Und Siemens Hausgeraete Gmbh Condensation type laundry dryer
CN102517857A (en) * 2011-11-08 2012-06-27 海尔集团公司 Heat-exchange system with waste heat recovery function for dry clothes condensation and cloths dryer
WO2012123914A1 (en) 2011-03-16 2012-09-20 Pierre Brun Device for treating humid air and associated method
EP2692940A1 (en) * 2012-07-30 2014-02-05 Electrolux Home Products Corporation N.V. Method for drying laundry in a laundry drying machine and laundry drying machine
EP2778281A4 (en) * 2011-11-08 2015-07-08 Haier Group Corp Heat exchanger for condensation in clothes drying and clothes drying system and clothes dryer and drying method thereof
EP2910883A1 (en) * 2014-02-03 2015-08-26 Kordecka, Wieslawa Drying machine for drying of wet objects with circulation of drying medium and method for leading drying medium in drying machine for drying of wet objects
CN104928901A (en) * 2015-05-15 2015-09-23 珠海格力电器股份有限公司 heat pump clothes dryer and control method and device thereof
EP3056603A1 (en) * 2015-02-11 2016-08-17 BSH Hausgeräte GmbH Clothes dryer and method for operating a clothes dryer
WO2016128849A1 (en) 2015-02-11 2016-08-18 BSH Hausgeräte GmbH Clothes dryer and method for operating a clothes dryer

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19738735C2 (en) * 1997-09-04 2003-02-20 Bsh Bosch Siemens Hausgeraete Condensation dryer with a closed drying air circuit
EP1205592A1 (en) * 2000-11-10 2002-05-15 Seven-Air Gebr. Meyer AG Laundry dryer cabinet
GB2375812A (en) * 2001-04-05 2002-11-27 Dbk Technitherm Ltd Drying apparatus with heat exchanger and heat pump
CN1782615B (en) * 2004-11-29 2010-05-05 乐金电子(天津)电器有限公司 Drying device using freezing circulation
US7984568B2 (en) * 2005-05-23 2011-07-26 Bsh Bosch Und Siemens Hausgeraete Gmbh Condensation type laundry dryer
DE102005062940A1 (en) * 2005-12-29 2007-07-05 BSH Bosch und Siemens Hausgeräte GmbH A method for drying washing has a heat pump by which circulated air through the washing chamber is dried and heated and an additional heat pump evaporator is arranged to predry the circulated air stream
US7866057B2 (en) 2005-12-29 2011-01-11 Bsh Bosch Und Siemens Hausgeraete Gmbh Domestic appliance for the care of washed articles
FR2911180A1 (en) * 2007-01-04 2008-07-11 Pierre Brun Hot and humid air treating device for e.g. commercial laundry drier, has air/air heat exchanger and air/liquid exchanger that are placed in series for reheating air from air/liquid exchanger and/or external air with air to be treated
US8387273B2 (en) * 2008-02-27 2013-03-05 I.M.A.T. S.P.A. Heat-pump clothes drying machine
US20100307018A1 (en) * 2008-02-27 2010-12-09 I.M.A.T. S.P.A. Heat-Pump Clothes Drying Machine
WO2012123914A1 (en) 2011-03-16 2012-09-20 Pierre Brun Device for treating humid air and associated method
FR2972787A1 (en) * 2011-03-16 2012-09-21 Pierre Brun WET AIR TREATMENT DEVICE AND METHOD THEREOF
CN102517857B (en) * 2011-11-08 2016-08-31 青岛海尔滚筒洗衣机有限公司 A kind of drying condensation heat-exchange system with function of recovering waste heat and dryer
EP2778281A4 (en) * 2011-11-08 2015-07-08 Haier Group Corp Heat exchanger for condensation in clothes drying and clothes drying system and clothes dryer and drying method thereof
CN102517857A (en) * 2011-11-08 2012-06-27 海尔集团公司 Heat-exchange system with waste heat recovery function for dry clothes condensation and cloths dryer
US9869052B2 (en) 2011-11-08 2018-01-16 Haier Group Corporation Heat exchanger for condensation in clothes drying and clothes drying system and clothes dryer and drying method thereof
EP2692940A1 (en) * 2012-07-30 2014-02-05 Electrolux Home Products Corporation N.V. Method for drying laundry in a laundry drying machine and laundry drying machine
EP2910883A1 (en) * 2014-02-03 2015-08-26 Kordecka, Wieslawa Drying machine for drying of wet objects with circulation of drying medium and method for leading drying medium in drying machine for drying of wet objects
WO2016128849A1 (en) 2015-02-11 2016-08-18 BSH Hausgeräte GmbH Clothes dryer and method for operating a clothes dryer
EP3056603A1 (en) * 2015-02-11 2016-08-17 BSH Hausgeräte GmbH Clothes dryer and method for operating a clothes dryer
CN107208349A (en) * 2015-02-11 2017-09-26 Bsh家用电器有限公司 Dryer and the dryer method for operation
CN107208349B (en) * 2015-02-11 2019-07-16 Bsh家用电器有限公司 Dryer and dryer method for operation
CN104928901B (en) * 2015-05-15 2017-08-01 珠海格力电器股份有限公司 heat pump clothes dryer and control method and device thereof
CN104928901A (en) * 2015-05-15 2015-09-23 珠海格力电器股份有限公司 heat pump clothes dryer and control method and device thereof

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Legal Events

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8127 New person/name/address of the applicant

Owner name: AEG HAUSGERAETE GMBH, 90429 NUERNBERG, DE

8110 Request for examination paragraph 44
8131 Rejection