EP2160488B1 - Sécheur à condensation muni d'une pompe à chaleur, et procédé pour le faire fonctionner - Google Patents

Sécheur à condensation muni d'une pompe à chaleur, et procédé pour le faire fonctionner Download PDF

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Publication number
EP2160488B1
EP2160488B1 EP08760795A EP08760795A EP2160488B1 EP 2160488 B1 EP2160488 B1 EP 2160488B1 EP 08760795 A EP08760795 A EP 08760795A EP 08760795 A EP08760795 A EP 08760795A EP 2160488 B1 EP2160488 B1 EP 2160488B1
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EP
European Patent Office
Prior art keywords
air
condensate
heat exchanger
process air
condensation dryer
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
EP08760795A
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German (de)
English (en)
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EP2160488A1 (fr
Inventor
Günter Steffens
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
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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 EP2160488A1 publication Critical patent/EP2160488A1/fr
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Publication of EP2160488B1 publication Critical patent/EP2160488B1/fr
Not-in-force 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

Definitions

  • the invention relates to a condensation dryer with a drying chamber for the objects to be dried, a process air duct in which there is a heater for heating the process air and the heated process air can be guided by means of a blower over the objects to be dried, an air-to-air heat exchanger, a heat pump circuit having an evaporator, a compressor and a condenser, at least one condensate collecting vessel, a condensate pump, a condensate sink and a first line leading from the condensate pump to the condensate sink, and a preferred method for its operation.
  • a tumble dryer whose operation is based on the condensation of the evaporated by means of warm process air moisture of the laundry from the process air discharged from the laundry - a so-called condensation dryer - does not need a hose for removing the moisture laden process air and is very popular because it is in an indoor lying bath or a laundry room of a larger residential complex can be used without possibility for the removal of exhaust air.
  • a condensation dryer air (so-called process air) is passed through a fan via a heater in a wet laundry containing drum as a drying chamber.
  • the hot air absorbs moisture from the laundry to be dried.
  • the now moist process air is directed into a heat exchanger, which is usually preceded by a lint filter.
  • the moist process air is cooled so that the water contained in the moist process air condenses.
  • the condensed water is then generally collected in a suitable container for later disposal, and the cooled and dried air is returned to the heater and then to the drum.
  • the heat pump is primarily the known compressor heat pump into consideration, in which a circulating refrigerant is cyclically evaporated and condensed. In a condensation dryer equipped with such a heat pump, the cooling of the warm, with moisture takes place laden process air substantially in the evaporator of the heat pump, where the heat transferred to evaporate the refrigerant is used.
  • Such refrigerant vaporized due to the heating is supplied via a compressor to a second heat exchanger, hereinafter also referred to as "condenser", the heat pump, where due to the condensation of the gaseous refrigerant heat is released, which in turn is used to heat the process air before entering the drum.
  • the liquefied refrigerant passes through a throttle, which reduces its pressure, back to the evaporator to evaporate there, with renewed absorption of heat from the process air.
  • a heat pump is generally so integrated into the condensation dryer because of its construction that it can not be removed from the condensation dryer for cleaning lint. It is therefore all the more important in a condensation dryer equipped with a heat pump to remove or bind lint prior to contact of the process air with the heat exchanger surfaces of the heat pump. Under elimination is understood in the first place, the removal of the lint from the process air stream, so that they can not be reflected on the heat pump. For this it is expedient to bind them on a suitable, upstream of the heat pump component.
  • a process air duct in general a lint filter.
  • the fluff sticks and is mechanically removed by the user after the drying process.
  • Finer lint can pass through the lint filter and deposit in other places in the process air duct and thereby hinder the heat exchange or obstruct the airways, for example, in a downstream heat exchanger.
  • the use of multiple fluff filters also increases the pressure losses in the process air flowing in the process air duct increased, which brings other serious disadvantages.
  • condensation of the water contained in the warm and moist process air takes place.
  • the separation of the lint in the heat exchanger is promoted by the binding of the lint to moist surfaces of the heat exchanger.
  • the air-to-air heat exchanger only a relatively low condensation performance.
  • the amount of condensed water generated is low and approaches zero towards the end of the drying process, because the so-called inlet moisture of the process air entering the heat exchanger is generally low due to the rather low temperature level required for trouble-free operation of the heat pump and is getting smaller and smaller due to the drying laundry becomes.
  • the contribution of the air-to-air heat exchanger for binding the lint which brings the process air to him, only small.
  • the DE 4 330 456 C1 discloses a condensation dryer having the respective features of the preambles of independent claims 1 and 9.
  • the object of the invention is therefore to provide a condensation dryer with a heat pump and an air-to-air heat exchanger, in which an improved removal of lint, especially before they reach the heat pump is achieved.
  • Preferred embodiments of the condensation dryer according to the invention are listed in the subclaims 2 to 10.
  • a preferred method for operating the condensation dryer is listed in dependent claim 12.
  • Preferred developments of the condensation dryer correspond to preferred developments of the method and vice versa, even if it is not pointed out in detail.
  • the invention thus relates to a condensation dryer with integrated Flusenbe physicallyung with a drying chamber for the objects to be dried, a process air duct in which a heater for heating the process air and the heated process air can be performed by means of a blower on the objects to be dried, an air Air heat exchanger, a heat pump circuit having an evaporator, a compressor and a condenser, at least one condensate collecting vessel, a condensate pump, a condensate sink and a first line leading from the condensate pump to the condensate sink, characterized in that a second line branches off from the first line, which opens into the process air channel between the drying chamber and the air-to-air heat exchanger.
  • the invention utilizes the condensate produced during a drying process. That at the beginning of a drying process not necessarily appropriate condensate is available, is not a problem, since at such a time, the laundry to be dried is still quite moist, and thus condensate accumulates in abundant amount, but there is no particularly large accumulation of lint.
  • a first condensate collecting vessel is arranged at the evaporator of the heat pump.
  • a second condensate collecting vessel is arranged in the air-air heat exchanger. According to the invention, a first and a second condensate collecting vessel can be present at the same time.
  • a diaphragm is preferably arranged at one of the drying chamber facing flange surface of the air-to-air heat exchanger.
  • This panel may be mounted as a separate part or integrated into the air-to-air heat exchanger.
  • the aperture is integrated in the air-to-air heat exchanger.
  • the heat exchanger is set up at a lowest point of the process air duct for collecting all accumulating lint and removed for disposal of such lint from the condensation dryer.
  • the condensation dryer according to the invention is thus preferably arranged in front of the air-to-air heat exchanger, a diaphragm which is integrated in the air-to-air heat exchanger or attached thereto.
  • This panel preferably has parallel webs.
  • the shutter may include a first set of parallel ridges and a second set of ridges perpendicular thereto.
  • a first line originates from a condensate pump, from which a second line branches off, which projects into the process air channel between the drying chamber and the air-to-air heat exchanger.
  • a part of the condensate for binding or removal of lint can be introduced before and / or in the air-to-air heat exchanger.
  • the remainder of the condensate pumped by the condensate pump is fed via the first line of a condensate sink, and in particular either passed into a condensate collection container, from which it can be disposed of manually, or disposed of directly into a sewer system.
  • the air-air heat exchanger is removable. This is particularly advantageous because a removable heat exchanger can be cleaned more easily from lint.
  • the invention also relates to a method for operating a condensation dryer with a drying chamber for the objects to be dried, a process air duct in which there is a heater for heating the process air and the heated process air is guided by means of a blower over the objects to be dried, an air Air heat exchanger and a heat pump circuit with an evaporator, a compressor and a condenser, at least one condensate collecting vessel, a condensate pump and a first line outgoing from the condensate pump, wherein a second line branches off from the first line, which in the process air channel between the drying chamber and the air-to-air heat exchanger protrudes, and wherein a portion of a condensate from the at least one condensate collecting vessel is guided via the second line into the process air channel between the drying chamber and the air-air heat exchanger.
  • the condensate is guided via an orifice to a flange surface of the air-to-air heat exchanger facing the drying chamber.
  • the refrigerant used in the heat pump cycle is preferably selected from the group consisting of a butane / isopropane mixture, carbon dioxide and a fluorohydrocarbon compound.
  • the temperature of the refrigerant of the heat pump is generally kept within the permissible range via the control of the heat pump. Since in the condensation dryer according to the invention in the process air duct prior to entry into the drying chamber, a heater, preferably a two-stage heating, is located, the control of the heat pump is preferably carried out in coordination with the control of the heating.
  • the degree of drying of the objects to be dried in the condenser dryer decreases the energy required for drying, it is appropriate to regulate the heating accordingly, ie to reduce its heat output as the degree of drying progresses, to maintain a balance between the supplied and the necessary drying energy .
  • a lower heating power or even an increasing cooling capacity of the heat pump is required.
  • the temperature in the process air duct would rise sharply.
  • the heat pump and the heater in the condensation dryer are controlled so that a maximum allowable temperature is not exceeded in the drying chamber.
  • process air and cooling air or process air and refrigerant in the heat pump are each passed through the corresponding heat exchangers in a crossflow or countercurrent process.
  • the invention has the advantage that the removal of lint in the condensation dryer can be performed better.
  • the resulting improved heat exchange in the heat exchanger allows the operation of the condensation dryer with a more favorable energy balance.
  • the heat pump of the condensation dryer is spared.
  • Fig. 1 shows a vertically cut condensation dryer (hereinafter abbreviated to "dryer") in which a first and a second condensate collecting vessel is connected to the condensate pump.
  • dryer a vertically cut condensation dryer
  • the in FIG. 1 shown dryer 1 has a drum rotatable about a horizontal axis as a drying chamber 3, within which driver 4 for the movement of Laundry are attached during a drum rotation.
  • Process air is conducted by means of a blower 19 via a heater 18, through a drum 3, an air-air heat exchanger 11, 12 and a heat pump 13, 14, 15 in an air channel 2 in a closed circuit (process air channel 2).
  • the moist, warm process air is cooled and reheated after condensation of moisture contained in the process air.
  • heated air from the heater 18, ie from the side of the drum 3 opposite a door 5 is passed through the perforated bottom into the drum 3, where it comes into contact with the laundry to be dried and flows through the filling opening of the drum 3 to a lint filter 6 within a closing the filling opening door 5.
  • the air flow in the door 5 is deflected downward and passed from the process air duct 2 to the air-air heat exchanger 11, 12.
  • the moisture absorbed by the process air from the items of laundry condenses there and is collected in a second condensate collecting vessel 21.
  • the somewhat cooled process air to the evaporator 13 of a heat pump 13, 14, 15 out, where it is further cooled.
  • first condensate collecting vessel 25 Below the evaporator 13 is a first condensate collecting vessel 25.
  • the condensate accumulating in the first condensate collecting vessel 25 and / or in the second condensate collecting vessel 21 is pumped off by means of a condensate pump 16.
  • the condensate coming from the condensate collecting vessels 21 and / or 25 is conveyed on via a first line 22.
  • a second line 23 branches off, which projects into the process air channel 2 between the drying chamber 3 and the air-air heat exchanger 11, 12 and preferably the supply of condensate to a diaphragm 27 in front of the air-to-air heat exchanger eleventh , 12 allows.
  • the supplied condensate is collected again in the condensate collecting vessel 21 and pumped off by means of the condensate pump 16.
  • the condensate carried in the first conduit 22 only a portion is diverted into the second conduit 23.
  • the remaining condensate is, for example via the first line 22 in a (in FIG. 1 not shown, cf. but FIG. 2 ) Condensate 28 pumped from which it can be disposed of.
  • the vaporized in the evaporator 13 refrigerant of the heat pump is passed through a compressor 14 to the condenser 15.
  • condenser 15 the refrigerant liquefies with heat being released to the process air.
  • the refrigerant, which is now in liquid form, is again conducted via a throttle valve 17 to the evaporator 13, whereby the refrigerant circuit is closed.
  • the cooling air is taken from the room air and, after passing through the air-to-air heat exchanger 11, 12 again supplied to the room air.
  • 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 condensation dryer 1 via a control device 10, which can be controlled by the user via an operating unit 9.
  • Fig. 2 shows a perspective view of an opened condensation dryer 1 (drying chamber not shown).
  • a shell 24 In front of the air-air heat exchanger 11, 12 is a shell 24, in whose heat exchanger 11, 12 facing wall is a diaphragm 26 with parallel horizontal webs 29 and perpendicular thereto parallel webs 30 is located.
  • the diaphragm 26 is located on one of the drying chamber, not shown, facing flange surface 27 of the air-to-air heat exchanger 11, 12th
  • condensate collector 28 is in a (in FIG. 2 not visible) placed at the top of the clothes dryer 1, where it is easily accessible to a user.
  • the location 28 should be understood as a symbol for a condensate sink 28. At this location 28, for example, a hose could be connected that leads to a suitably placed condensate collector 28, or a sewer connection.
  • the second conduit 23 terminates in a hose in front of the orifice 26, which can be moistened or rinsed by the branched-off condensate.

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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 (10)

  1. Séchoir à condensation (1) comprenant une chambre de séchage (3) pour les objets à sécher, un canal (2) pour l'air de processus, dans lequel se trouve un dispositif de chauffage (18) destiné à échauffer l'air de processus et dans lequel l'air échauffé peut être guidé sur les objets à sécher au moyen d'un ventilateur (19), un échangeur de chaleur air-air (11, 12), un circuit de pompe à chaleur (13, 14, 15) doté d'un évaporateur (13), un compresseur (14) et un condenseur (15), au moins un récipient récepteur de condensat (21, 25), une pompe à condensat (16), un puits à condensat (28) et une première conduite (22) menant de la pompe à condensat (16) vers le puits à condensat (28), caractérisé en ce que de la première conduite (22) bifurque une seconde conduite (23), laquelle s'ouvre dans le canal (2) d'air de processus entre la chambre de séchage (3) et l'échangeur de chaleur air-air (11, 12).
  2. Séchoir à condensation (1) selon la revendication 1, caractérisé en ce qu'un premier récipient récepteur de condensat (25) est disposé près de l'évaporateur (13).
  3. Séchoir à condensation (1) selon la revendication 1 ou 2, caractérisé en ce qu'un second récipient récepteur de condensat (21) est disposé près de l'échangeur de chaleur air-air (11, 12).
  4. Séchoir à condensation (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'un écran (26) est disposé sur une surface bridée (27), tournée vers la chambre de séchage (3), de l'échangeur de chaleur air-air (11, 12).
  5. Séchoir à condensation (1) selon la revendication 4, caractérisé en ce que l'écran (26) est intégré dans l'échangeur de chaleur air-air (11, 12).
  6. Séchoir à condensation (1) selon l'une quelconque des revendications 4 et 5, caractérisé en ce que l'écran présente des nervures parallèles (29).
  7. Séchoir à condensation (1) selon la revendication 6, caractérisé en ce que l'écran présente un premier jeu de nervures parallèles (29) et un second jeu de nervures (30) perpendiculaires au premier jeu de nervures parallèles.
  8. Séchoir à condensation (1) selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le puits à condensat (28) est un récipient collecteur de condensat (28).
  9. Procédé destiné au fonctionnement d'un séchoir à condensation (1) comprenant une chambre de séchage (3) pour les objets à sécher, un canal (2) pour l'air de processus, dans lequel se trouve un dispositif de chauffage (18) destiné à échauffer l'air de processus et dans lequel l'air échauffé peut être guidé sur les objets à sécher au moyen d'un ventilateur (19), un échangeur de chaleur air-air (11, 12), un circuit de pompe à chaleur (13, 14, 15) doté d'un évaporateur (13), un compresseur (14) et un condenseur (15), au moins un récipient récepteur de condensat (21, 25), une pompe à condensat (16), un puits à condensat (28) et une première conduite (22) menant de la pompe à condensat (16) vers le puits à condensat (28), une seconde conduite (23) bifurquant de la première conduite (22), laquelle seconde conduite dépasse dans le canal (2) d'air de processus entre la chambre de séchage (3) et l'échangeur de chaleur air-air (11, 12), caractérisé en ce qu'une partie d'un condensat est menée à partir de l'au moins un récipient récepteur de condensat (21, 25) dans le canal de processus (2) entre la chambre de séchage (3) et l'échangeur de chaleur air-air (11, 12) par l'intermédiaire de la seconde conduite (23).
  10. Procédé selon la revendication 9, caractérisé en ce que le condensat est mené sur une surface bridée (27), tournée vers la chambre de séchage (3), de l'échangeur de chaleur air-air (11, 12) par l'intermédiaire d'un écran (26).
EP08760795A 2007-06-18 2008-06-10 Sécheur à condensation muni d'une pompe à chaleur, et procédé pour le faire fonctionner Not-in-force EP2160488B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007027866A DE102007027866A1 (de) 2007-06-18 2007-06-18 Kondensationstrockner mit einer Wärmepumpe sowie Verfahren zu seinem Betrieb
PCT/EP2008/057236 WO2008155263A1 (fr) 2007-06-18 2008-06-10 Sécheur à condensation muni d'une pompe à chaleur, et procédé pour le faire fonctionner

Publications (2)

Publication Number Publication Date
EP2160488A1 EP2160488A1 (fr) 2010-03-10
EP2160488B1 true EP2160488B1 (fr) 2010-09-15

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EP08760795A Not-in-force EP2160488B1 (fr) 2007-06-18 2008-06-10 Sécheur à condensation muni d'une pompe à chaleur, et procédé pour le faire fonctionner

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EP (1) EP2160488B1 (fr)
AT (1) ATE481524T1 (fr)
DE (2) DE102007027866A1 (fr)
WO (1) WO2008155263A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH701685B1 (de) * 2010-12-24 2018-12-14 V Zug Ag Wäschetrockner mit temperaturgesteuertem Zusatzwärmetauscher.
EP2549008B1 (fr) * 2011-07-22 2015-06-10 Electrolux Home Products Corporation N.V. Agencement de cave d'un appareil de traitement du linge à pompe thermique
EP2573253B1 (fr) * 2011-09-26 2016-09-07 Electrolux Home Products Corporation N.V. Sèche-linge à pompe à chaleur
JP2013153839A (ja) * 2012-01-27 2013-08-15 Panasonic Corp ドラム式洗濯乾燥機
CH705546A3 (de) * 2013-01-23 2014-03-31 V Zug Ag Wäschetrockner mit Zusatzheizung und Zusatzwärmetauscher.
KR101613962B1 (ko) * 2014-11-20 2016-04-20 엘지전자 주식회사 히트펌프 사이클을 구비한 의류처리장치 및 이의 제어방법
EP3056603A1 (fr) 2015-02-11 2016-08-17 BSH Hausgeräte GmbH Sèche-linge et procédé de fonctionnement d'un sèche-linge
WO2016128849A1 (fr) 2015-02-11 2016-08-18 BSH Hausgeräte GmbH Sèche-linge et procédé de fonctionnement d'un sèche-linge
DE102017123318A1 (de) 2017-10-09 2019-04-11 Miele & Cie. Kg Wärmepumpengerät, vorzugsweise Wärmepumpenwäschetrockner oder Wärmepumpenwaschtrockner

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
DE4132431A1 (de) * 1991-09-28 1993-04-01 Miele & Cie Waeschebehandlungsmaschine wie waeschetrockner oder waschtrockner
ES2099123T3 (es) * 1991-12-20 1997-05-16 Zanker Gmbh Procedimiento y dispositivo para la limpieza del aire evacuado del tambor de la ropa de una secadora de ropa.
DE4216106C2 (de) * 1992-05-15 1996-04-18 Aeg Hausgeraete Gmbh Wäschetrockner mit einem Wärmepumpenkreis
DE4409607C2 (de) * 1993-04-21 2002-03-14 Miele & Cie Kondensationswäschetrockner mit einer Wärmepumpe
DE4330456C1 (de) * 1993-09-08 1995-03-16 Blomberg Werke Gmbh Wäschetrockner
DE4333901C2 (de) * 1993-10-05 1999-04-08 Bauknecht Hausgeraete Wäschetrockner
JP2004116899A (ja) * 2002-09-26 2004-04-15 Matsushita Electric Ind Co Ltd ヒートポンプ式乾燥機

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Publication number Publication date
EP2160488A1 (fr) 2010-03-10
DE102007027866A1 (de) 2008-12-24
DE502008001342D1 (de) 2010-10-28
WO2008155263A1 (fr) 2008-12-24
ATE481524T1 (de) 2010-10-15

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