EP2395145A1 - Tumble dryer - Google Patents
Tumble dryer Download PDFInfo
- Publication number
- EP2395145A1 EP2395145A1 EP10401079A EP10401079A EP2395145A1 EP 2395145 A1 EP2395145 A1 EP 2395145A1 EP 10401079 A EP10401079 A EP 10401079A EP 10401079 A EP10401079 A EP 10401079A EP 2395145 A1 EP2395145 A1 EP 2395145A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- cooling
- heat exchanger
- dryer according
- motor
- 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- Withdrawn
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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
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
- D06F58/04—Details
-
- 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 a tumble dryer with a rotatably mounted in a housing drum, a closable with a door feed opening, and a motor driven by a fan and a heater for generating a process air flow in a process air duct, which is closed by the locked state of the door, and a heat exchanger for cooling the process air flow is provided in the process air duct, which is connected to a cooling air duct.
- This dryer which is equipped with a drying chamber for objects to be dried, has a process air channel in which there is a heater for heating the process air and a first fan with a motor. Further, a heat exchanger is provided in the process air duct, which is supplied via a designed as a channel cold air section with fresh air. In the cold air section is a branch, which is designed as a channel for engine cooling, so that the engine is exposed to cold air. Thus, a portion of the intake fresh air is provided for the engine cooling. In the engine cooling channel here is a second fan. The engine can then be cooled particularly efficiently.
- Another cooling according to the prior art can also be provided by, for example, a fan wheel is mounted on the motor shaft, in order to dissipate the engine heat in this way.
- a fan wheel is mounted on the motor shaft, in order to dissipate the engine heat in this way.
- the sucked for cooling the process air flow cooling air flow in the heat exchanger to a main and secondary cooling flow divisible, so that the secondary flow can be used directly for cooling the motor.
- the main flow occurs after flowing through the heat exchanger from the housing, the secondary cooling flow in the heat exchanger via a branch directly to the engine.
- the secondary cooling flow it is advantageous for the secondary cooling flow to flow into a region below the engine, so that the cooling air can flow along the engine. This ensures that the engine is cooled as extensively as possible and so-called hot spots in the engine are avoided.
- the branch is arranged in a partial region of the flow channel of the heat exchanger.
- the branch as such is in this case downstream of the heat exchanger in the flow channel.
- the branch consists of a baffle formed in the flow channel of the cooling stream, which is slightly bent in the flow channel, so that there is no flow losses or turbulence in the region of the branch, which could possibly impede the flow of air.
- the branch is formed on the heat exchanger as a narrow-built, attached housing, which forms a flow channel between the heat exchanger and the engine.
- This flow channel is designed as a connecting housing, wherein in this connecting housing, the baffle is housed.
- the connecting housing is designed such that it surrounds the motor at least partially annular, which in particular means that the cool air can act directly on the engine or here on the motor housing.
- the FIG. 1 shows a schematic representation in a sectional side view of a clothes dryer 1.
- the clothes dryer 1 has a housing 2, in which a drum 3 is rotatably mounted.
- the housing 2 is closable with a door 4, which is arranged at a loading opening 5.
- a heating device 8 is provided, which generates a heated process air flow according to the indicated arrows in a process air duct 9.
- the process air flow is passed through the process air duct 9 through the drum 3, wherein it is guided over the closed door 4, within which a fluff filter 10 is arranged, so that the process air flow cleaned again via the fan 6 and a downstream heat exchanger 11 via the heater. 8 penetrates through the bottom wall 12 of the drum 3 in the drum space.
- FIG. 1 and the FIG. 3 is shown, is sucked for cooling the process air stream by means of a further blower 13 sucked cooling air flow 14 in the heat exchanger 11 to a main cooling flow 15 and secondary cooling flow 16, in particular the secondary cooling flow 16, as in particular in the FIG. 3 is to be seen in connection with the FIG. 2 , is used for cooling the motor 7.
- the main cooling flow 15 exits directly from the housing 2 again after flowing through the heat exchanger 11.
- the secondary cooling flow 16 in this case flows via a branch 17 to the motor 7, which is shown schematically in the figure purely to illustrate the flow path here.
- the integrated representation of the constructive flow path in the heat exchanger 11 according to the invention is better from the FIG. 2 combined with FIG. 3 to recognize where the assembly 18 and the branch 17 are shown as such. So will the FIG. 2 clear that the branch 17 is located directly on the heat exchanger 11, and is in the structural design with the motor 7 in operative connection.
- the cooling air is passed through the secondary cooling flow 16 to the motor housing or motor 7.
- the cooling air sweeps along the motor housing and then enters the interior of the machine housing, ao it can pass through slots or solemn leaks to the outside.
- the branch 17 is arranged in a partial region of the flow channel of the heat exchanger 11, as shown in particular from FIG. 2 can be seen.
- the branch 17 is connected downstream in the flow channel of the heat exchanger 11.
- the branch 17 consists of a formed in the flow channel 19 of the cooling air flow 14 baffle 20.
- the guide plate 20 consists of a bent portion, which in particular a low-loss flow through the partial streams 15th and 16 allows.
- the secondary cooling flow 16 is guided past a narrowing of the flow cross-section nose 21, which is enclosed by the curved Leitblleich 20.
- a cup-shaped receptacle 7a for the motor 7 is provided in the structural unit for the air ducts. This provides a good grip and an air flow of the cooling air, which flows around the motor 7 at least in a section-wise extent.
- FIG. 2 shows in a further development of the invention, that a narrow housing adjacent housing 22 is disposed on the heat exchanger 11.
- this narrow-built attached housing 22 between the heat exchanger 11 and the motor 7 forms the flow channel 19 of the cooling air flow 14.
- this flow channel 19 as he is in the FIG. 3 represents, in particular, the already mentioned baffle 20, which is here formed in an arc shape, arranged.
- the connecting housing 22 surrounds the motor 7 at least partially annular.
- the assembly 18 here includes a compact part to be mounted, which on the one hand holds the heat exchanger 11, the motor 7 and the fan 13 for the cooling air flow 14. It goes without saying that this compact component 18 can be easily and easily installed in the production of dryers 1 on the assembly line.
Abstract
Description
Die Erfindung betrifft einen Wäschetrockner mit einer in einem Gehäuse drehbar gelagerten Trommel, einer mit einer Tür verschließbaren Beschickungsöffnung, sowie einem mittels eines Motors angetriebenen Gebläses und einer Heizeinrichtung zur Erzeugung eines Prozessluftstromes in einem Prozessluftkanal, der durch den verriegelten Zustand der Tür geschlossen ist, und im Prozessluftkanal ein Wärmetauscher zur Abkühlung des Prozessluftstromes vorgesehen ist, der mit einem Kühlluftkanal verbunden ist.The invention relates to a tumble dryer with a rotatably mounted in a housing drum, a closable with a door feed opening, and a motor driven by a fan and a heater for generating a process air flow in a process air duct, which is closed by the locked state of the door, and a heat exchanger for cooling the process air flow is provided in the process air duct, which is connected to a cooling air duct.
Aus dem Stand der Technik gemäß der
Eine andere Kühlung gemäß dem Stand der Technik kann auch dadurch bereitgestellt werden, dass beispielsweise ein Lüfterrad auf der Motorwelle angebracht ist, um auf diese Weise die Motorwärme abzuleiten. Bei derartigen Motorantrieben ist es insbesondere problematisch, dass die Motorleistung infolge der Erwärmung begrenzt ist. Denn durch Erhöhen des Anlaufmomentes bei gleicher Isolationsklasse ist eine verbesserte Kühlung erforderlich.Another cooling according to the prior art can also be provided by, for example, a fan wheel is mounted on the motor shaft, in order to dissipate the engine heat in this way. In such engine drives, it is particularly problematic that the engine power is limited due to the heating. Because by increasing the starting torque for the same insulation class improved cooling is required.
Bei den aus dem Stand der Technik bekannten Ausführungsformen wird es als nachteilig angesehen, dass einerseits bei der letztgenannten nicht die hinreichende Leistungseffizienz des Motors hinsichtlich seiner Kühlung bereitgestellt wird, wobei andererseits bei einer gesonderten Bereitstellung einer Kühlung durch eine gesonderte Kanalverzweigung wesentlich mehr Bauteile im Trockner verbaut werden müssen.In the known from the prior art embodiments, it is considered disadvantageous that on the one hand in the latter not the sufficient power efficiency of the engine is provided with respect to its cooling, on the other hand installed in a separate provision of cooling by a separate channel branching significantly more components in the dryer Need to become.
Hieraus ergibt sich das der Erfindung zugrundeliegende Problem, einen Wäschetrockner derart weiter zu bilden, welcher im Bereich der Prozessluftkühlung mit wesentlich weniger Bauteilen auskommt, wobei insbesondere der Motor mit einem wesentlich höheren Anlaufmoment arbeiten kann.This results in the problem underlying the invention to further develop a tumble dryer, which in the field of process air cooling with significantly fewer components, in particular the engine can work with a much higher starting torque.
Erfindungsgemäß wird dieses Problem mit einem Wäschetrockner mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden abhängigen Ansprüchen.According to the invention, this problem is solved with a clothes dryer having the features of
Die mit der Erfindung erreichbaren Vorteile bestehen darin, dass auf Grund der Ausgestaltung des Wärmetauschers, der erfindungsgemäß mit zur Bereitstellung der Kühlung des Motors herangezogen wird, einerseits weniger Bauteile im Trockner zu verbauen sind, wobei andererseits durch diese effiziente Kühlung auch ein höheres Anlaufmoment des Motors verfügbar ist. Neben der Kosteneinsparung ergibt sich dadurch auch ein wesentlich effizienterer Trocknungsbetrieb, der auch somit energiesparender ist.The achievable with the invention advantages are that due to the design of the heat exchanger, which is used according to the invention for providing the cooling of the engine, on the one hand fewer components are to be installed in the dryer, on the other hand by this efficient cooling and a higher starting torque of the engine is available. In addition to the cost savings, this also results in a much more efficient drying operation, which is thus also energy-efficient.
Gemäß der Erfindung ist der zur Kühlung des Prozessluftstromes angesaugte Kühlluftstrom im Wärmetauscher zu einem Haupt- und Nebenkühlstrom teilbar, so dass der Nebenstrom unmittelbar zur Kühlung des Motors herangezogen werden kann. Der Hauptstrom tritt nach Durchströmen des Wärmetauschers aus dem Gehäuse aus, wobei der Nebenkühlstrom im Wärmetauscher über einen Abzweig direkt zum Motor strömt.According to the invention, the sucked for cooling the process air flow cooling air flow in the heat exchanger to a main and secondary cooling flow divisible, so that the secondary flow can be used directly for cooling the motor. The main flow occurs after flowing through the heat exchanger from the housing, the secondary cooling flow in the heat exchanger via a branch directly to the engine.
Hierbei ist es vorteilhaft, dass der Nebenkühlstrom in einen Bereich unterhalb des Motors mündet, so dass die Kühlluft am Motor entlang strömen kann. Somit wird sichergestellt, dass der Motor möglichst großflächig gekühlt wird und sogenannte Hot-Spots im Motor vermieden werden.In this case, it is advantageous for the secondary cooling flow to flow into a region below the engine, so that the cooling air can flow along the engine. This ensures that the engine is cooled as extensively as possible and so-called hot spots in the engine are avoided.
In Weiterbildung der Erfindung ist der Abzweig in einem Teilbereich des Strömungskanals des Wärmetauschers angeordnet. Der Abzweig als solches ist in dem Strömungskanal hierbei dem Wärmetauscher nachgeschaltet. Nach einer besonders vorteilhaften Ausgestaltung der Erfindung besteht der Abzweig aus einem im Strömungskanal des Kühlstromes gebildeten Leitblech, wobei dieses im Strömungskanal leicht gebogen ist, so dass es im Bereich des Abzweigs zu keinen Strömungsverlusten bzw. Verwirbelungen kommt, die möglicherweise den Luftstrom behindern könnten. In Weiterbildung ist der Abzweig an dem Wärmetauscher als ein schmal bauendes, angesetztes Gehäuse ausgebildet, welches zwischen dem Wärmetauscher und dem Motor einen Strömungskanal bildet. Dieser Strömungskanal ist als verbindendes Gehäuse ausgebildet, wobei in diesem verbindenden Gehäuse das Leitblech untergebracht ist. Das verbindende Gehäuse ist dabei derart ausgestaltet, dass es den Motor zumindest teilweise ringförmig umgibt, was insbesondere dazu führt, dass die kühle Luft unmittelbar am Motor bzw. hier am Motorgehäuse wirken kann.In a further development of the invention, the branch is arranged in a partial region of the flow channel of the heat exchanger. The branch as such is in this case downstream of the heat exchanger in the flow channel. According to a particularly advantageous embodiment of the invention, the branch consists of a baffle formed in the flow channel of the cooling stream, which is slightly bent in the flow channel, so that there is no flow losses or turbulence in the region of the branch, which could possibly impede the flow of air. In a further development of the branch is formed on the heat exchanger as a narrow-built, attached housing, which forms a flow channel between the heat exchanger and the engine. This flow channel is designed as a connecting housing, wherein in this connecting housing, the baffle is housed. The connecting housing is designed such that it surrounds the motor at least partially annular, which in particular means that the cool air can act directly on the engine or here on the motor housing.
In Weiterbildung der Erfindung ist gemäß der Erfindung vorgesehen, dass der Wärmetauscher, der Motor und das Gebläse für den Kühlstrom eine Baueinheit bilden, so dass diese als kompaktes Bauteil während der Montage des Wäschetrockners als ein Teil montiert werden kann. Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt:
Figur 1- eine geschnittene Seitenansicht eines Wäschetrockners gemäß der Erfindung;
Figur 2- eine perspektivische Darstellung der Baueinheit von Wärmetauscher, Motor und Gebläse; und
Figur 3- eine perspektivische Darstellung des verbindenden Gehäuses zwischen dem Wärmetauscher und dem Motor in geöffneter Ansicht.
- FIG. 1
- a sectional side view of a clothes dryer according to the invention;
- FIG. 2
- a perspective view of the assembly of heat exchanger, motor and blower; and
- FIG. 3
- a perspective view of the connecting housing between the heat exchanger and the engine in an open view.
Die
Wie insbesondere in der
Wie insbesondere aus der schematischen Darstellung der
In Weiterbildung der Erfindung ist der Abzweig 17 in einem Teilbereich des Strömungskanals des Wärmetauschers 11 angeordnet, wie dies insbesondere aus der
Aus
Die
Als besonders vorteilhaft wird es angesehen, dass, wie in der
Claims (11)
dadurch gekennzeichnet,
dass der zur Kühlung des Prozessluftstromes angesaugte Kühlluftstrom (14) im Wärmetauscher (11) zu einem Hauptkühlstrom (15) und Nebenkühlstrom (16) teilbar ist, und der Nebenkühlstrom (16) zur Kühlung des Motors (7) nutzbar ist.Clothes dryer (1) with a drum (3) rotatably mounted in a housing (2), a feed opening (5) which can be closed by a door (4), and a blower (6) driven by a motor (7) and a heating device (8 ) for generating a process air stream in a process air duct (9), which is closed by the locked state of the door (4), and in the process air duct (9) a heat exchanger (11) is provided for cooling the process air stream, which is connected to a cooling air duct,
characterized,
in that the cooling air flow (14) sucked in to cool the process air flow is divisible into a main cooling flow (15) and secondary cooling flow (16) in the heat exchanger (11), and the auxiliary cooling flow (16) can be used to cool the engine (7).
dadurch gekennzeichnet,
dass der Hauptkühlstrom (15) nach Durchströmen des Wärmetauschers (11) unmittelbar aus dem Gehäuse (2) wieder austritt.Dryer according to claim 1,
characterized,
that the main cooling flow (15) after flowing through the heat exchanger (11) emerging directly from the housing (2).
dadurch gekennzeichnet,
dass der Nebenkühlstrom (16) über einen Abzweig (17) zum Motor (7) strömt.Dryer according to claim 1,
characterized,
that the secondary cooling stream (16) via a branch (17) to the motor (7) flows.
dadurch gekennzeichnet,
dass der Nebenkühlstrom (16) in einen Bereich unterhalb des Motors (7) mündet, so dass die Kühlluft am Motor (7) entlang strömen kann.Dryer according to claim 3,
characterized,
in that the secondary cooling flow (16) opens into a region below the engine (7), so that the cooling air can flow along the engine (7).
dadurch gekennzeichnet,
dass der Abzweig (17) in einem Teilbereich des Strömungskanals des Wärmetauschers (11) angeordnet ist.Dryer according to claim 3,
characterized,
that the branch (17) in a partial area of the flow channel of the heat exchanger (11) is arranged.
dadurch gekennzeichnet,
dass der Abzweig (17) in dem Strömungskanal dem Wärmetauscher (11) nachgeschaltet ist.Dryer according to claim 5,
characterized,
that the branch (17) in the flow channel downstream of the heat exchanger (11).
dadurch gekennzeichnet,
dass der Abzweig (17) aus einem im Strömungskanal des Kühlluftstromes (14) gebildeten Leitblech (20) besteht.Dryer according to claim 6,
characterized,
that the branch (17) of a flow channel in the cooling air flow (14) formed guide plate (20).
dadurch gekennzeichnet,
dass an dem Wärmetauscher (11) ein schmal bauendes angesetztes Gehäuse (22) angeordnet ist, welches zwischen dem Wärmetauscher (11) und dem Motor (7) einen Strömungskanal bildet.Dryer according to claim 1 and 2,
characterized,
in that a narrow housing attached housing (22), which forms a flow channel between the heat exchanger (11) and the motor (7), is arranged on the heat exchanger (11).
dadurch gekennzeichnet,
dass in dem verbindenden Gehäuse (22) das Leitblech (20) angeordnet ist.Dryer according to claim 8,
characterized,
that in the connecting housing (22) the guide plate (20) is arranged.
dadurch gekennzeichnet,
dass das verbindende Gehäuse (22) den Motor (7) zumindest teilweise ringförmig umgibt.Dryer according to claim 9,
characterized,
in that the connecting housing (22) at least partially surrounds the motor (7) in an annular manner.
dadurch gekennzeichnet,
dass der Wärmetauscher (11), der Motor (7) und das Gebläse (13) für den Kühlluftstrom (14) eine Baueinheit (18) bilden.Dryer according to claim 1,
characterized,
in that the heat exchanger (11), the motor (7) and the fan (13) for the cooling air flow (14) form a structural unit (18).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10401079A EP2395145A1 (en) | 2010-06-10 | 2010-06-10 | Tumble dryer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10401079A EP2395145A1 (en) | 2010-06-10 | 2010-06-10 | Tumble dryer |
Publications (1)
Publication Number | Publication Date |
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EP2395145A1 true EP2395145A1 (en) | 2011-12-14 |
Family
ID=43304898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP10401079A Withdrawn EP2395145A1 (en) | 2010-06-10 | 2010-06-10 | Tumble dryer |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014102314A1 (en) * | 2012-12-28 | 2014-07-03 | Arcelik Anonim Sirketi | A laundry washing and drying machine comprising a dispenser |
CN104131443A (en) * | 2013-04-30 | 2014-11-05 | Lg电子株式会社 | Clothes treating apparatus with heat recovery device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19743509A1 (en) * | 1997-10-01 | 1999-04-08 | Bosch Siemens Hausgeraete | Domestic laundry dryer |
DE10202442A1 (en) * | 2002-01-22 | 2003-08-14 | Miele & Cie | Base module for combination washing and drying machines has a double ended motor shaft with a cooling fan at the rear and a recirculation fan at the front |
EP1516953A1 (en) * | 2003-09-22 | 2005-03-23 | Electrolux Home Products Corporation N.V. | Condenser-type low-noise household clothes drying machine |
DE102008010519A1 (en) * | 2008-02-22 | 2009-09-03 | BSH Bosch und Siemens Hausgeräte GmbH | Dryer with cooled engine |
-
2010
- 2010-06-10 EP EP10401079A patent/EP2395145A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19743509A1 (en) * | 1997-10-01 | 1999-04-08 | Bosch Siemens Hausgeraete | Domestic laundry dryer |
DE10202442A1 (en) * | 2002-01-22 | 2003-08-14 | Miele & Cie | Base module for combination washing and drying machines has a double ended motor shaft with a cooling fan at the rear and a recirculation fan at the front |
EP1516953A1 (en) * | 2003-09-22 | 2005-03-23 | Electrolux Home Products Corporation N.V. | Condenser-type low-noise household clothes drying machine |
DE102008010519A1 (en) * | 2008-02-22 | 2009-09-03 | BSH Bosch und Siemens Hausgeräte GmbH | Dryer with cooled engine |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014102314A1 (en) * | 2012-12-28 | 2014-07-03 | Arcelik Anonim Sirketi | A laundry washing and drying machine comprising a dispenser |
CN104131443A (en) * | 2013-04-30 | 2014-11-05 | Lg电子株式会社 | Clothes treating apparatus with heat recovery device |
EP2799613A1 (en) * | 2013-04-30 | 2014-11-05 | LG Electronics Inc. | Clothes treating apparatus with heat recovery device |
US9845566B2 (en) | 2013-04-30 | 2017-12-19 | Lg Electronics Inc. | Clothes treating apparatus with heat recovery device |
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