EP1342828B1 - Laundry drier - Google Patents
Laundry drier Download PDFInfo
- Publication number
- EP1342828B1 EP1342828B1 EP03002961A EP03002961A EP1342828B1 EP 1342828 B1 EP1342828 B1 EP 1342828B1 EP 03002961 A EP03002961 A EP 03002961A EP 03002961 A EP03002961 A EP 03002961A EP 1342828 B1 EP1342828 B1 EP 1342828B1
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- EP
- European Patent Office
- Prior art keywords
- washer
- fan
- heat exchanger
- dryer according
- warm
- 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.)
- Expired - Lifetime
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Classifications
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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
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/50—Occurence
- B65H2511/51—Presence
- B65H2511/512—Marks, e.g. invisible to the human eye; Patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/40—Movement
- B65H2513/42—Route, path
Definitions
- the invention relates to a tumble dryer according to the preamble of claim 1.
- Such a clothes dryer is known from DE 199 04 993 A1.
- the fans for the warm air and the cold air are operated in different directions of rotation.
- the impellers results due to a total shortened drying time of the laundry in the drum, an energy-reduced drying process.
- the drying process is still not optimized.
- a tumble dryer is also known, in which a Peltier element is provided.
- the Peltier element is arranged both with its cold side and with its warm side in the same air line.
- JP Patent Abstracts of Japan 08057194 A likewise discloses a tumble dryer in which, in turn, a Peltier element is arranged both with its cold side and with its warm side in the same air flow.
- the object of the invention is thus seen to improve the drying process in a tumble dryer of the type mentioned.
- the invention proposes that a clothes dryer is formed with the features of the preamble of claim 1 corresponding to the characterizing part of this claim.
- the hot side of at least one Peltier element is provided as the heating device, which is arranged in the hot air flow.
- the cold side of the Peltier element is arranged in a closed cold air flow. This leads to a very favorable Energy balance for the drying process, since both the hot side and the cold side of the Peltier element is used. Due to the cooled cold air flow results in an increased condensation of hot air in the heat exchanger, so that a rapid dehumidification of the laundry is ensured in the drum.
- several thermally connected in series Peltier elements are arranged in the form of a Peltier cascade instead of a Peltier element.
- the tumble dryer Since the cold air circuit and the hot air circuit are closed, the tumble dryer is completely closed to the outside, so that the room climate at the site by the drying process is not or only slightly influenced by a slight increase in temperature. In particular, there is no increase in the humidity.
- the heat exchanger is advantageously a countercurrent heat exchanger.
- a cross flow heat exchanger was used.
- the countercurrent heat exchanger used in the tumble dryer according to the invention is characterized in that takes place over the entire longitudinal sectional area of this heat exchanger, a temperature exchange of the two air streams.
- a further embodiment of the invention provides that between the cold side and the hot side of the at least one Peltier element to increase the distance of the radiator surfaces on the cold side of the hot side at least one spacer element is arranged. As a result, a better power balance is achieved because the hot side and the cold side are thermally decoupled.
- the fan in the hot air circuit is a centrifugal fan with a first fan.
- the same fan is also used in the cold air circuit, for which purpose a second fan is provided.
- Both Fan wheels of the centrifugal fan are arranged on the same axis and driven by a single drive motor.
- a vacuum pump is provided.
- the vacuum pump is located inside the dryer and reduces the air pressure within the dryer by about 0.2 bar. This leads to an increase in the efficiency of the drying process, since the evaporation temperature is lowered by the use of the vacuum pump, thereby allowing a very low drying temperature.
- the tumble dryer 1 has a closed hot air circuit 2 and a closed cold air circuit 3.
- a first fan 5 of a fan 6, a hot side 7 of a Peltier cascade 8 with Peltier elements as a heater, a rotatably mounted drum 9 for receiving the laundry to be dried, a lint filter 10 and a heat exchanger 11 are arranged in the flow direction 4 below.
- a second fan 13 of the fan 6, a cold side 14 of the Peltier cascade 8 for cooling the cold air and the heat exchanger 11 are arranged in the flow direction 12 below.
- a container 15 is provided for receiving the condensed water.
- the fan 6 is a centrifugal fan, wherein the first fan 5 and the second fan 13 on the same axis are arranged and driven by a single drive motor.
- the hot side 7 of the Peltier cascade 8 is designed as a multipart air cooler.
- the cold side 14 of the Peltier cascade 8 is formed as a one-piece air cooler.
- the Peltier cascade 8 has a total of 3 Doppelpeltier sculpture 16, which are thermally arranged in series. Between each Doppelpeltierelement 16, a spacer 17 is provided so that the hot side 7 and the cold side 14 have a greater distance from each other and thus are thermally decoupled.
- 14 insulating elements 18 are provided between the hot side 7 and the cold side.
- the spacers 17 have a high thermal conductivity to allow an effective heat transfer from the Peltier elements 16 to the hot side 7.
- the spacers 17 are made of copper. However, other materials with high thermal conductivity are also conceivable.
- the thickness of the Peltier elements is 4 mm and the thickness of each spacer element 17 is at least 10 mm.
- the heat exchanger 11 is a countercurrent heat exchanger.
- the countercurrent heat exchanger has individual, superimposed profile plates 19, wherein each profile plate 19 is formed a hexagonal overall.
- the profile plates 19 for the hot air and the profile plates 19 for the cold air are alternately superimposed, wherein the profile plates 19 are rotated for the cold air and the profile plates 19 for the hot air in the plate plane by 180 ° against each other.
- a release layer is arranged between each profile plate 19, a release layer.
- Each profile plate 19 has a wave-shaped profile and consists of a first triangular shape 20, a second triangular shape 21 and a rectangular shape 22. At, seen in the longitudinal direction of the profile plate 19, opposite sides of the rectangular shape 22 is followed by a triangular shape 20, 21 at.
- Each triangular shape 20, 21 is made so that each profile channel 23 of the triangular shape 20 and each profile channel 24 of the triangular shape 21 to two profile channels 25 of the rectangular shape 22 connects exactly. This accurate determination of the widths of the profile channels is accomplished by cutting or punching each triangle shape from a material such that the ratio of hypotenuse to height is 3.5 to 1 for each triangle shape.
- the triangular shapes are identical.
- the Profile channels 23, 24 of the triangular shapes 20, 21 run obliquely, in particular at an angle of approximately 60 °, to the longitudinal direction, while the profile channels 25 of the rectangular shape 22 run parallel to the longitudinal direction.
- the cold air and the hot air flow over the entire longitudinal sectional area of the heat exchanger 11 through the profile channels 23,24,25, so that a heat exchange is ensured over the entire longitudinal sectional area.
- FIG. 2 shows schematically the arrangement of the Peltier cascade 8, the heat exchanger 11, the drum 9, the container 15 for the condensed water and a motor 27 for the drum 9 within the tumble dryer 1 according to the invention.
- the arrangement of the blower 6 is located at the back of the Peltier cascade 8.
- an operating bar 26 is provided for the operation of the tumble dryer 1 at the front of the tumble dryer 1.
- a vacuum pump 28 is provided, which is arranged inside the tumble dryer 1.
- the air pressure within the clothes dryer 1 is reduced by about 0.2 bar, whereby an increase in the efficiency of the drying process is achieved, since the evaporation temperature is lowered by the use of the vacuum pump 28.
- the heat exchanger 11 in Fig. 3 is drawn out only for a better representation of the air duct and is actually arranged in the tumble dryer 1.
- the hot air flows in a closed circuit the drum 9 with the wet laundry, then the lint filter 10 and then the heat exchanger 11 and further the fan 5 warm side and designed as an air cooler warm side 7 of the Peltier cascade 8 warm side.
- the cold air flows in a closed circuit from the outlet of the air cooler designed as a cold side 14 through the heat exchanger 11, back to the fan 13 cold side and again through the cold side 14th
- the drying of the laundry can be carried out at low drying temperature and is therefore particularly gentle. Since the circuits for the warm air and the cold air are completely closed, the room climate at the site by the drying process is only very slightly influenced by a slight increase in temperature. There is no increase in humidity and no lint. The countercurrent heat exchanger 11 allows a high temperature difference despite the low temperature. Furthermore, the tumble dryer is very quiet due to the closed arrangement.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
Description
Die Erfindung bezieht sich auf einen Wäschetrockner gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a tumble dryer according to the preamble of
Ein derartiger Wäschetrockner ist durch die DE 199 04 993 A1 bekannt. Bei diesem Wäschetrockner werden die Gebläse für die Warmluft und die Kaltluft in unterschiedlichen Drehrichtungen betrieben. In Verbindung mit einer besonderen Ausbildung der Gebläseräder ergibt sich auf Grund einer insgesamt verkürzten Trocknungszeit der Wäsche in der Trommel ein energiereduzierter Trocknungsprozeß. Nachteiligerweise ist jedoch der Trocknungsprozeß immer noch nicht optimiert.Such a clothes dryer is known from DE 199 04 993 A1. In this tumble dryer, the fans for the warm air and the cold air are operated in different directions of rotation. In conjunction with a special design of the impellers results due to a total shortened drying time of the laundry in the drum, an energy-reduced drying process. Unfortunately, however, the drying process is still not optimized.
Durch die DE 69 26 182 U ist ebenfalls ein Wäschetrockner bekannt, bei welchem ein Peltierelement vorgesehen ist. Das Peltierelement ist sowohl mit seiner Kaltseite als auch mit seiner Warmseite in derselben Luftleitung angeordnet. Durch die JP Patent Abstracts of Japan 08057194 A ist ebenfalls ein Wäschetrockner bekannt, bei welchem wiederum ein Peltierelement sowohl mit seiner Kaltseite als auch mit seiner Warmseite in demselben Luftstrom angeordnet ist.From DE 69 26 182 U a tumble dryer is also known, in which a Peltier element is provided. The Peltier element is arranged both with its cold side and with its warm side in the same air line. JP Patent Abstracts of Japan 08057194 A likewise discloses a tumble dryer in which, in turn, a Peltier element is arranged both with its cold side and with its warm side in the same air flow.
Die Aufgabe der Erfindung wird somit darin gesehen, bei einem Wäschetrockner der eingangs genannten Art den Trocknungsprozeß zu verbessern.The object of the invention is thus seen to improve the drying process in a tumble dryer of the type mentioned.
Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgeschlagen, daß ein Wäschetrockner mit den Merkmalen des Oberbegriffs des Anspruchs 1 entsprechend dem kennzeichnenden Teil dieses Anspruchs ausgebildet ist.To solve this problem, the invention proposes that a clothes dryer is formed with the features of the preamble of
Bei dem erfindungsgemäßen Wäschetrockner ist als Heizeinrichtung die Warmseite mindestens eines Peltierelementes vorgesehen, welche im Warmluftstrom angeordnet ist. Gleichzeitig ist die Kaltseite des Peltierelementes in einem geschlossenen Kaltluftstrom angeordnet. Dies führt zu einer sehr günstigen Energiebilanz für den Trocknungsprozeß, da sowohl die Warmseite als auch die Kaltseite des Peltierelementes genutzt wird. Durch den gekühlten Kaltluftstrom ergibt sich im Wärmetauscher eine erhöhte Kondensation der Warmluft, so daß eine schnelle Entfeuchtung der Wäsche in der Trommel gewährleistet ist. Für eine Leistungssteigerung des Wäschetrockners sind anstelle eines Peltierelementes mehrere thermisch in Reihe geschaltete Peltierelemente in Form einer Peltier-Kaskade angeordnet.In the tumble dryer according to the invention, the hot side of at least one Peltier element is provided as the heating device, which is arranged in the hot air flow. At the same time, the cold side of the Peltier element is arranged in a closed cold air flow. This leads to a very favorable Energy balance for the drying process, since both the hot side and the cold side of the Peltier element is used. Due to the cooled cold air flow results in an increased condensation of hot air in the heat exchanger, so that a rapid dehumidification of the laundry is ensured in the drum. To increase the performance of the tumble dryer several thermally connected in series Peltier elements are arranged in the form of a Peltier cascade instead of a Peltier element.
Da der Kaltluftkreislauf und auch der Warmluftkreislauf geschlossen sind, ist der Wäschetrockner nach außen vollkommen geschlossen, so daß das Raumklima am Aufstellungsort durch den Trocknungsvorgang nicht oder nur sehr gering durch einen leichten Temperaturanstieg beeinflußt wird. Es tritt insbesondere keine Erhöhung der Luftfeuchtigkeit auf.Since the cold air circuit and the hot air circuit are closed, the tumble dryer is completely closed to the outside, so that the room climate at the site by the drying process is not or only slightly influenced by a slight increase in temperature. In particular, there is no increase in the humidity.
Um einen besonders effektiven Wärmetauscher zu gestalten, ist vorteilhafterweise der Wärmetauscher ein Gegenstromwärmetauscher. Bei dem gattungsbildenden Wäschetrockner wurde ein Kreuzstromwärmetauscher verwendet. Der bei dem erfindungsgemäßen Wäschetrockner verwendete Gegenstromwärmetauscher zeichnet sich dadurch aus, daß über die gesamte Längsschnittfläche dieses Wärmetauschers ein Temperaturaustausch der beiden Luftströme stattfindet.In order to design a particularly effective heat exchanger, the heat exchanger is advantageously a countercurrent heat exchanger. In the generic dryer a cross flow heat exchanger was used. The countercurrent heat exchanger used in the tumble dryer according to the invention is characterized in that takes place over the entire longitudinal sectional area of this heat exchanger, a temperature exchange of the two air streams.
Eine weitere Ausgestaltung der Erfindung sieht vor, daß zwischen der Kaltseite und der Warmseite des mindestens einen Peltierelementes zur Vergrößerung des Abstandes der Kühlerflächen an der Kaltseite von der Warmseite mindestens ein Distanzelement angeordnet ist. Hierdurch wird eine bessere Leistungsbilanz erzielt, da die Warmseite und die Kaltseite thermisch entkoppelt sind.A further embodiment of the invention provides that between the cold side and the hot side of the at least one Peltier element to increase the distance of the radiator surfaces on the cold side of the hot side at least one spacer element is arranged. As a result, a better power balance is achieved because the hot side and the cold side are thermally decoupled.
Um den Wäschetrockner kompakt zu bauen, sieht eine weitere Ausbildung der Erfindung vor, daß das Gebläse im Warmluftkreislauf ein Radialventilator mit einem ersten Lüfterrad ist. Zweckmäßigerweise wird dasselbe Gebläse auch im Kaltluftkreislauf verwendet, wobei hierfür ein zweites Lüfterrad vorgesehen ist. Beide Lüfterräder des Radialventilators sind auf derselben Achse angeordnet und von einem einzigen Antriebsmotor angetrieben.To build the dryer compact, provides a further embodiment of the invention that the fan in the hot air circuit is a centrifugal fan with a first fan. Appropriately, the same fan is also used in the cold air circuit, for which purpose a second fan is provided. Both Fan wheels of the centrifugal fan are arranged on the same axis and driven by a single drive motor.
Bei einer weiteren Ausführungsform der Erfindung ist eine Vakuumpumpe vorgesehen. Die Vakuumpumpe ist innerhalb des Trockners angeordnet und reduziert den Luftdruck innerhalb des Trockners um etwa 0,2 bar. Dies führt zu einer Erhöhung der Effizienz des Trocknungsvorganges, da die Verdampfungstemperatur durch den Einsatz der Vakuumpumpe abgesenkt wird, so daß hierdurch eine sehr niedrige Trocknungstemperatur ermöglicht wird.In a further embodiment of the invention, a vacuum pump is provided. The vacuum pump is located inside the dryer and reduces the air pressure within the dryer by about 0.2 bar. This leads to an increase in the efficiency of the drying process, since the evaporation temperature is lowered by the use of the vacuum pump, thereby allowing a very low drying temperature.
Die Erfindung wird nachstehend anhand der Zeichnung näher erläutert. Die Zeichnung zeigt ein Ausführungsbeispiel der Erfindung. Hierbei stellen dar:
- Fig. 1 eine schematische Darstellung der Kreisläufe in dem erfindungsgemäßen Wäschetrockner,
- Fig. 2 eine schematische Vorderansicht und
- Fig. 3 eine schematische Darstellung der Kreisläufe bei einer weiteren Ausführungsform der Erfindung.
- 1 is a schematic representation of the circuits in the tumble dryer according to the invention,
- Fig. 2 is a schematic front view and
- Fig. 3 is a schematic representation of the circuits in a further embodiment of the invention.
Der erfindungsgemäße Wäschetrockner 1 weist einen geschlossenen Warmluftkreislauf 2 und einen geschlossen Kaltluftkreislauf 3 auf. In dem Warmluftkreislauf 2 sind in Strömungsrichtung 4 nachfolgend ein erstes Lüfterrad 5 eines Gebläses 6, eine Warmseite 7 einer Peltierkaskade 8 mit Peltierelementen als Heizeinrichtung, eine drehbar gelagerte Trommel 9 zur Aufnahme der zu trocknenden Wäsche, ein Flusensieb 10 und ein Wärmetauscher 11 angeordnet. In dem Kaltluftkreislauf 3 sind in Strömungsrichtung 12 nachfolgend ein zweites Lüfterrad 13 des Gebläses 6, eine Kaltseite 14 der Peltierkaskade 8 zur Kühlung der Kaltluft und der Wärmetauscher 11 angeordnet. Unterhalb des Wärmetauschers 11 ist ein Behältnis 15 zur Aufnahme des Kondenswassers vorgesehen. Das Gebläse 6 ist ein Radialventilator, wobei das erste Lüfterrad 5 und das zweite Lüfterrad 13 auf derselben Achse angeordnet sind und von einem einzigen Antriebsmotor angetrieben werden. Die Warmseite 7 der Peltierkaskade 8 ist als mehrteiliger Luftkühler ausgebildet. Die Kaltseite 14 der Peltierkaskade 8 ist als einteiliger Luftkühler ausgebildet. Die Peltierkaskade 8 weist insgesamt 3 Doppelpeltierelemente 16 auf, welche thermisch in Reihe angeordnet sind. Zwischen jedem Doppelpeltierelement 16 ist ein Distanzelement 17 vorgesehen, damit die Warmseite 7 und die Kaltseite 14 einen größeren Abstand voneinander haben und somit thermisch entkoppelt sind. Zusätzlich sind zwischen der Warmseite 7 und der Kaltseite 14 Isolierelemente 18 vorgesehen. Die Distanzelemente 17 besitzen eine hohe Wärmeleitfähigkeit, um einen wirkungsvollen Wärmeübertrag von den Peltierelementen 16 auf die Warmseite 7 zu ermöglichen. Die Distanzelemente 17 bestehen aus Kupfer. Es sind jedoch auch andere Werkstoffe mit hoher Wärmeleitfähigkeit denkbar. Die Dicke der Peltierelemente beträgt 4 mm und die Dicke jedes Distanzelementes 17 beträgt mindestens 10 mm.The
Bei dem Wärmetauscher 11 handelt es sich um einen Gegenstromwärmetauscher. Der Gegenstromwärmetauscher weist einzelne, übereinander angeordnete Profilplatten 19 auf, wobei jede Profilplatte 19 insgesamt sechseckförmig ausgebildet ist. Die Profilplatten 19 für die Warmluft und die Profilplatten 19 für die Kaltluft liegen abwechselnd übereinander, wobei die Profilplatten 19 für die Kaltluft und die Profilplatten 19 für die Warmluft in Plattenebene um 180° gegeneinander gedreht sind. Zwischen jeder Profilplatte 19 ist eine Trennschicht angeordnet. Jede Profilplatte 19 weist ein wellenförmiges Profil auf und besteht aus einer ersten Dreieckform 20, einer zweiten Dreieckform 21 und einer Rechteckform 22. An, in Längsrichtung der Profilplatte 19 gesehen, gegenüberliegenden Seiten der Rechteckform 22 schließt sich jeweils eine Dreieckform 20, 21 an. Jede Dreieckform 20, 21 ist so hergestellt, daß sich jeder Profilkanal 23 der Dreieckform 20 und jeder Profilkanal 24 der Dreieckform 21 an zwei Profilkanäle 25 der Rechteckform 22 exakt anschließt. Diese genaue Bestimmung der Breiten der Profilkanäle und wird dadurch erreicht, daß jede Dreieckform aus einem Material derart ausgeschnitten oder ausgestanzt wird, daß das Verhältnis von Hypothenuse zur Höhe bei jeder Dreieckform 3.5 zu 1 ist. Die Dreieckformen sind identisch ausgebildet. Die Profilkanäle 23,24 der Dreieckformen 20,21 verlaufen schräg, insbesondere in einem Winkel von etwa 60°, zur Längsrichtung, während die Profilkanäle 25 der Rechteckform 22 parallel zur Längsrichtung verlaufen. Bei Betrieb des Gegenstromwärmetauschers strömen die Kaltluft und die Warmluft über die gesamte Längsschnittfläche des Wärmetauschers 11 durch die Profilkanäle 23,24,25, so daß ein Wärmeaustauch auch über die gesamte Längsschnittfläche gewährleistet ist.The
Fig.2 zeigt schematisch die Anordnung der Peltierkaskade 8, des Wärmetauschers 11, der Trommel 9, des Behältnisses 15 für das Kondenswasser und eines Motors 27 für die Trommel 9 innerhalb des erfindungsgemäßen Wäschetrockners 1. Die Anordnung des Gebläses 6 befindet sich an der Rückseite der Peltierkaskade 8. Weiterhin ist an der Vorderseite des Wäschetrockners 1 eine Bedienungsleiste 26 für den Betrieb des Wäschetrockners 1 vorgesehen.2 shows schematically the arrangement of the Peltier
Bei der in Fig. 3 dargestellten weiteren Ausführungsform der Erfindung ist eine Vakuumpumpe 28 vorgesehen, welche innerhalb des Wäschetrockners 1 angeordnet ist. Mit dieser Vakuumpumpe 28 wird der Luftdruck innerhalb des Wäschetrockners 1 um etwa 0,2 bar reduziert, wodurch eine Erhöhung der Effizienz des Trocknungsvorganges erzielt wird, da die Verdampfungstemperatur durch den Einsatz der Vakuumpumpe 28 abgesenkt wird. Der Wärmetauscher 11 in Fig. 3 ist lediglich zur besseren Darstellung der Luftführung herausgezeichnet und ist real im Wäschetrockner 1 angeordnet.In the further embodiment of the invention shown in FIG. 3, a
Bei Betrieb des Wäschetrockners durchströmt die Warmluft in geschlossenem Kreislauf die Trommel 9 mit der feuchten Wäsche, dann das Flusensieb 10 und danach den Wärmetauscher 11 und weiter das Lüfterrad 5 warmseitig und die als Luftkühler ausgebildete Warmseite 7 der Peltierkaskade 8 warmseitig. Die Kaltluft strömt in geschlossenem Kreislauf vom Ausgang der als Luftkühler ausgebildeten Kaltseite 14 durch den Wärmetauscher 11, zurück zum Lüfterrad 13 kaltseitig und wieder durch die Kaltseite 14.During operation of the tumble dryer, the hot air flows in a closed circuit the
Durch die Nutzung sowohl der Warmseite 7 als auch der Kaltseite 14 der Peltierkaskade 8 wird eine sehr günstige Energiebilanz erzielt. Die Trocknung der Wäsche kann bei niederer Trocknungstemperatur durchgeführt werden und ist daher besonders schonend. Da die Kreisläufe für die Warmluft und die Kaltluft vollkommen geschlossen sind, wird das Raumklima beim Aufstellungsort durch den Trockenvorgang nur sehr gering durch einen leichten Temperaturanstieg beeinflußt. Es treten keine Erhöhung der Luftfeuchtigkeit und auch keine Flusen auf. Der Gegenstromwärmetauscher 11 ermöglicht trotz niederer Temperatur eine große Temperaturdifferenz. Weiterhin ist der Wäschetrockner durch die geschlossene Anordnung sehr leise.By using both the
Claims (10)
- Washer-dryer with a closed warm air circuit (2), in which a fan (6), a heating device (8), a drum (9) for the accommodation of the washing and a heat exchanger (11) with a condensed water container (15) are arranged in sequence, and with a fan (6) for generating a cold air stream (3) via the heat exchanger (11) for dehumidifying the warm air, characterised in that the heating device (8) is a warm side (7) of at least one Peltier element, the warm side (7) being arranged in the closed warm air circuit (2) and a cold side (14) of the at least one Peltier element being arranged in a closed cold air circuit (3).
- Washer-dryer according to claim 1, characterised in that the heat exchanger (11) is a counter-current heat exchanger.
- Washer-dryer according to claim 2, characterised in that the counter-current heat exchanger has individual profile plates (19) arranged one above the other for a first air stream and a second air stream, each profile plate (19) being configured hexagonally and having a rectangular shape (22) and a first triangular shape (20) and a second triangular shape (21), which, in each case, adjoin an opposing side of the rectangular shape (22), viewed in the longitudinal direction of the profile plate (19) and can be connected in terms of flow.
- Washer-dryer according to claim 3, characterised in that each profile channel (23) of the first triangular shape (20) and each profile channel (24) of the second triangular shape (21) can be connected in terms of flow to two profile channels (25) of the rectangular shape (22).
- Washer-dryer according to claim 3 or 4, characterised in that the ratio of the hypotenuse to the height in each triangular shape (20, 21) is 3.5 to 1.
- Washer-dryer according to any one of the preceding claims, characterised in that at least one spacer element (17) is arranged between the cold side (14) and the warm side (7) of the Peltier cascade (8).
- Washer-dryer according to any one of the preceding claims, characterised in that the fan (6) in the warm air circuit (2) is a radial ventilator with a first fan impeller (5).
- Washer-dryer according to claim 7, characterised in that the fan (6) in the cold air circuit (3) is the same fan (6) as in the warm air circuit (2) and has a second fan impeller (13).
- Washer-dryer according to claim 7 or 8, characterised in that the first fan impeller (5) and the second fan impeller (13) of the radial ventilator are arranged on the same axis.
- Washer-dryer according to any one of the preceding claims, characterised in that a vacuum pump (28) is provided.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE20202782U | 2002-02-21 | ||
DE20202782U DE20202782U1 (en) | 2002-02-21 | 2002-02-21 | clothes dryer |
Publications (3)
Publication Number | Publication Date |
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EP1342828A2 EP1342828A2 (en) | 2003-09-10 |
EP1342828A3 EP1342828A3 (en) | 2004-12-01 |
EP1342828B1 true EP1342828B1 (en) | 2006-12-20 |
Family
ID=7968139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03002961A Expired - Lifetime EP1342828B1 (en) | 2002-02-21 | 2003-02-11 | Laundry drier |
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Country | Link |
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EP (1) | EP1342828B1 (en) |
AT (1) | ATE348909T1 (en) |
DE (2) | DE20202782U1 (en) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10334792A1 (en) | 2003-07-30 | 2005-02-24 | BSH Bosch und Siemens Hausgeräte GmbH | Dishwasher with rinse container having connecting air channel has peltier element to cool dry or warm air flowing through the channel |
DE102004025066A1 (en) * | 2004-05-18 | 2005-12-08 | Basf Ag | Telluride with new property combinations |
DE102004025065A1 (en) * | 2004-05-18 | 2005-12-08 | Basf Ag | Antimonide with new property combinations |
DE102004055926A1 (en) * | 2004-11-19 | 2006-05-24 | BSH Bosch und Siemens Hausgeräte GmbH | Drying unit for household appliances especially for textiles has heat tube between warm air region and using region |
DE102005056942A1 (en) * | 2005-11-29 | 2007-05-31 | BSH Bosch und Siemens Hausgeräte GmbH | Method for drying washing in a washing dryer has a bank of thermoelectric Peltier modules in an air circulation path by which the moisture is extracted and the air heated and returned to the drum |
DE102005057763A1 (en) * | 2005-12-02 | 2007-06-06 | BSH Bosch und Siemens Hausgeräte GmbH | Thermoelectric module for domestic appliance, has opposing sides of miniature circuit boards connected to heat exchanging plate by adhesive connector |
DE102005058285A1 (en) * | 2005-12-06 | 2007-06-14 | BSH Bosch und Siemens Hausgeräte GmbH | Device for drying laundry |
DE102005060041A1 (en) * | 2005-12-15 | 2007-06-21 | BSH Bosch und Siemens Hausgeräte GmbH | Circuit arrangement for a Peltier module |
DE102005060040A1 (en) * | 2005-12-15 | 2007-06-21 | BSH Bosch und Siemens Hausgeräte GmbH | Circuit arrangement for a Peltier module |
DE102005060355A1 (en) * | 2005-12-16 | 2007-06-21 | BSH Bosch und Siemens Hausgeräte GmbH | Domestic appliance with thermoelectric heat pump |
DE102005060673A1 (en) * | 2005-12-19 | 2007-06-21 | BSH Bosch und Siemens Hausgeräte GmbH | Clothes dryer with Peltier heat pump |
DE102006000708A1 (en) * | 2006-01-03 | 2007-07-05 | BSH Bosch und Siemens Hausgeräte GmbH | A method for clamping the heat exchanger plates of Peltier thermoelectric elements has a screw passing through holes and a sealing ring installed beneath the head to exclude moisture from the cavity between the plates |
DE102006020578A1 (en) * | 2006-05-03 | 2007-11-08 | BSH Bosch und Siemens Hausgeräte GmbH | Circuit arrangement and method for operating a Peltier module of a heat pump of a domestic appliance |
DE102006020579A1 (en) * | 2006-05-03 | 2007-11-08 | BSH Bosch und Siemens Hausgeräte GmbH | Method and circuit arrangement for controlling a drying process of a domestic appliance for the care of items of laundry |
DE102006026251A1 (en) * | 2006-06-06 | 2007-12-13 | BSH Bosch und Siemens Hausgeräte GmbH | Apparatus and method for drying laundry |
DE102006042991A1 (en) * | 2006-09-13 | 2008-03-27 | BSH Bosch und Siemens Hausgeräte GmbH | Apparatus and method for drying laundry with a heat pump and a heat exchanger |
DE102006051504A1 (en) | 2006-10-31 | 2008-05-08 | BSH Bosch und Siemens Hausgeräte GmbH | Method for operating a domestic appliance for the care of laundry |
DE102006051505A1 (en) * | 2006-10-31 | 2008-05-08 | BSH Bosch und Siemens Hausgeräte GmbH | Method for operating a domestic appliance for the care of laundry |
ATE462819T1 (en) * | 2006-12-25 | 2010-04-15 | Arcelik As | WASHER/DRYER |
US8365539B2 (en) | 2010-02-12 | 2013-02-05 | Massachusetts Institute Of Technology | System and method for thermal process including a thermoelectric heat pump and internal heat exchanger |
DE102010034716A1 (en) * | 2010-08-18 | 2012-02-23 | Etimex Technical Components Gmbh | Method and device for operating a water-bearing machine |
EP2658429B1 (en) * | 2010-12-27 | 2016-08-10 | Arçelik Anonim Sirketi | A dishwasher comprising a thermoelectric module |
TR201106328A1 (en) * | 2011-06-27 | 2013-01-21 | Arçeli̇k Anoni̇m Şi̇rketi̇ | A washer dryer with thermoelectric heat pump. |
US9140396B2 (en) | 2013-03-15 | 2015-09-22 | Water-Gen Ltd. | Dehumidification apparatus |
EP3117166B1 (en) * | 2014-03-11 | 2020-04-08 | Watergen Ltd | Closed-cycle condenser dryer with heat regeneration |
US10151060B2 (en) | 2015-11-24 | 2018-12-11 | Water-Gen Ltd | Steam compression dryer |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3036383A (en) * | 1958-08-26 | 1962-05-29 | Philco Corp | Drying apparatus |
DE6926182U (en) * | 1969-07-01 | 1969-12-04 | Christian Schneider | LAUNDRY DRYERS |
JPH0857194A (en) * | 1994-08-26 | 1996-03-05 | Matsushita Electric Ind Co Ltd | Dehumidifying type electric clothing-drying machine |
DE19904993C2 (en) * | 1999-02-08 | 2003-04-17 | Miele & Cie | condensation dryer |
DE20101641U1 (en) * | 2001-01-29 | 2002-06-06 | Akg Thermotechnik Gmbh & Co Kg | Condensation dryer and suitable condensation heat exchanger |
-
2002
- 2002-02-21 DE DE20202782U patent/DE20202782U1/en not_active Expired - Lifetime
-
2003
- 2003-02-11 AT AT03002961T patent/ATE348909T1/en active
- 2003-02-11 EP EP03002961A patent/EP1342828B1/en not_active Expired - Lifetime
- 2003-02-11 DE DE50306006T patent/DE50306006D1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE20202782U1 (en) | 2002-04-25 |
EP1342828A3 (en) | 2004-12-01 |
ATE348909T1 (en) | 2007-01-15 |
DE50306006D1 (en) | 2007-02-01 |
EP1342828A2 (en) | 2003-09-10 |
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