EP2775027A1 - Laundry dryer with a spray device for remoistening of dried laundry - Google Patents

Laundry dryer with a spray device for remoistening of dried laundry Download PDF

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Publication number
EP2775027A1
EP2775027A1 EP14401003.0A EP14401003A EP2775027A1 EP 2775027 A1 EP2775027 A1 EP 2775027A1 EP 14401003 A EP14401003 A EP 14401003A EP 2775027 A1 EP2775027 A1 EP 2775027A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
laundry
condensate
nozzle cap
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.)
Granted
Application number
EP14401003.0A
Other languages
German (de)
French (fr)
Other versions
EP2775027B1 (en
Inventor
Viktor Eichwald
Felix Maßmann
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Miele und Cie KG
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Miele und Cie KG
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Publication of EP2775027A1 publication Critical patent/EP2775027A1/en
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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
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/203—Laundry conditioning arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3426—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels emerging in the swirl chamber perpendicularly to the outlet axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3442—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cone having the same axis as the outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3447—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cylinder having the same axis as the outlet
    • 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 
    • D06F58/24—Condensing arrangements

Definitions

  • the invention relates to a tumble dryer with a drying chamber for receiving laundry, wherein the chamber and the laundry therein is preferably subjected to heated process air, with a condensation device for separating moisture from the process air, which comprises a condensate collection, wherein the condensate collection container with a spray cooperates, which sprays the condensate by means of a pump via a feed line and a nozzle into the drying chamber for rewetting the dried laundry.
  • Such a tumble dryer is from the EP 2 520 706 A2 known.
  • the condensate produced in the condensation device is used after or during the drying process for rewetting the dried laundry, in order to obtain as free as possible a fold-free laundry after the drying process.
  • the condensate is first collected in the region of the heat exchanger of the condensation device and then temporarily stored in a thrust accommodated in the upper region of the device. This condensate is sprayed by means of a pump via a feed line and a nozzle in the dryer drum.
  • a spraying device which has a spray tube, which is a few inches long, the spray tube emits a spray cloud in the drum chamber.
  • the spray device in this case has a supply line which is connected to a container in which the condensate is collected.
  • the spray device further comprises an electromagnetically or ultrasonically excited atomizer, which finely atomizes the cleaning agent, so that a spatially concentrated dripping of the cleaning agent on the laundry is prevented.
  • the mentioned atomizers are complex and expensive.
  • a nozzle for a dryer comprises a nozzle body, a swirling body and a swirling body and the nozzle body at least partially concealing nozzle cap, and wherein the swirling body is arranged as a separate nozzle body in the nozzle cap.
  • the invention thus raises the problem of ensuring a satisfactory spray function in a tumble dryer of the type mentioned.
  • the nozzle comprises a nozzle main body, a swirling body and a nozzle cap at least partially obscuring the swirling body and the nozzle main body, that the swirling body is arranged as a separate component from the nozzle main body in the nozzle cap, and that the swirling body thereby can be used in a defined position in the nozzle cap, that it can be screwed into the nozzle cap.
  • nozzle caps can be used with adjusted swirl body, so that the spray pattern is predefined.
  • the nozzle cap has a stop by means of which the position of the swirling body is fixed in the screwed-in state.
  • FIG. 1 shows in the sectional side view of a clothes dryer 1 with a rotatably mounted in a housing 2 Drum 3.
  • the tumble dryer 1 has a feed opening 4 which can be closed by means of a door 5.
  • the tumble dryer 1 comprises a fan 6 and a heating device 7 for generating a process air stream.
  • the process air stream is heated by the heater 7, blown through a process air duct 19 into the drum and takes out of there laundry the moisture on. It is then passed through the process air channel 19 to a condensation device in the form of a heat exchanger 8 and dehumidified there.
  • the condensate produced during the drying process is first collected in the region of the heat exchanger 8, and then fed via a line 9 to a condensate collecting tank 10.
  • the condensate collection container 10 is, as can be seen in the upper region of the tumble dryer 1, formed as an extendable thrust 11.
  • the condensate collecting tank 10 cooperates with a program-controlled spraying device 13 for rewetting the dried laundry in the drum 3.
  • the spray device 13 comprises a supply line 14 with pump 15, which sprays the condensate or filled by the user in the sump 12 water by means of a nozzle 16 in the drum chamber 6.
  • the removal of the condensate from the condensate collection container 10 takes place by means of a arranged in the upper lid portion 17 of the thrust 11 device 18. This is from the EP 2 520 706 A2 known and therefore not described here.
  • FIGS. 2 to 5 show in different views the nozzle 16 for spraying the condensate in the drum space.
  • FIG. 2 shows the main components of the nozzle, namely a nozzle body, a swirling body and a nozzle cap, in an exploded view.
  • FIG. 3 the nozzle is shown in the assembled state
  • FIGS. 4 and 5 show the assembled nozzle in section ( FIG. 5 an enlarged part FIG. 4 ).
  • the nozzle main body 20 comprises a core 21, a holding plate 22 and a connection nipple 23.
  • the core is provided with an external thread 24.
  • the main body 20 can be inserted into a bore on a flat component (not shown) of the tumble dryer, here at the air duct behind the front of the device, and be secured by means of a union nut 25.
  • the holding plate 22 then forms the counter bearing.
  • the area in front of the external thread 24 is provided with a circumferential groove 26, in which an O-ring seal 27 can be inserted (see FIGS. 4 and 5 ).
  • the swirl body 30 is a hat-shaped hollow body with an axially directed inlet 31 and two radial outlets 32. It reduces the flow rate and thereby increases the pressure. Between the outlets 32 and the inlet 31, the swirl body 30 has an external thread 33. A circumferential phase 34 is formed in front of the outlets.
  • the nozzle cap 40 is also designed as a hat-shaped hollow body. It has on its front surface a narrow nozzle opening 41.
  • the interior of the nozzle cap 40 is formed by bores 43, 45 and 46, which decrease in diameter from the rear edge 42 to the nozzle opening 41.
  • the first bore 43 seen from the rear edge 42 is provided with a first internal thread 44. This is followed by a transitional bore 45, then an end bore 46.
  • the end bore 46 is provided on its first portion with a second internal thread 47. The last part of the end bore 46 is unthreaded, it concludes with a phase 48 from.

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

Abstract

The dryer (1) has a drying chamber (3) to receive laundry. The laundry is supplied with heated process air. A condensation device (8) separates moisture from the process air. A condensate collecting tank (10) is cooperated with a spray device (13) for spraying condensate for back humidification of the dried laundry by a pump (15) by a feed line (14). The condensate is sprayed into the drying chamber by a nozzle (16). A nozzle base and a swirler of the nozzle are covered with a nozzle cap. The swirler separated from the nozzle base is arranged in the nozzle cap.

Description

Die Erfindung betrifft einen Wäschetrockner mit einer Trocknungskammer zur Aufnahme von Wäsche, wobei die Kammer und die darin befindliche Wäsche mit vorzugsweise erwärmter Prozessluft beaufschlagt wird, mit einer Kondensationseinrichtung zum Abscheiden von Feuchtigkeit aus der Prozessluft, welche einen Kondensatsammelbehälter umfasst, wobei der Kondensatsammelbehälter mit einer Sprüheinrichtung zusammenwirkt, welche zur Rückbefeuchtung der getrockneten Wäsche das Kondensat mittels einer Pumpe über eine Zuleitung und eine Düse in die Trocknungskammer sprüht.The invention relates to a tumble dryer with a drying chamber for receiving laundry, wherein the chamber and the laundry therein is preferably subjected to heated process air, with a condensation device for separating moisture from the process air, which comprises a condensate collection, wherein the condensate collection container with a spray cooperates, which sprays the condensate by means of a pump via a feed line and a nozzle into the drying chamber for rewetting the dried laundry.

Ein solcher Wäschetrockner ist aus der EP 2 520 706 A2 bekannt. Dort wird das in der Kondensationseinrichtung anfallende Kondensat nach bzw. während des Trocknungsprozesses zur Rückbefeuchtung der getrockneten Wäsche verwendet, um auf diese Weise eine möglichst faltenfreie Wäsche nach dem Trocknungsvorgang zu erhalten. Das Kondensat wird hierbei zunächst im Bereich des Wärmetauschers der Kondensationseinrichtung gesammelt und dann in einem im oberen Bereich des Gerätes untergebrachten Schub zwischengespeichert. Dieses Kondensat wird mittels einer Pumpe über eine Zuleitung und eine Düse in die Trocknertrommel gesprüht.Such a tumble dryer is from the EP 2 520 706 A2 known. There, the condensate produced in the condensation device is used after or during the drying process for rewetting the dried laundry, in order to obtain as free as possible a fold-free laundry after the drying process. The condensate is first collected in the region of the heat exchanger of the condensation device and then temporarily stored in a thrust accommodated in the upper region of the device. This condensate is sprayed by means of a pump via a feed line and a nozzle in the dryer drum.

Aus der EP 1 441 060 A1 ist ein Wäschetrockner mit einer Einrichtung zum Einsprühen von Zusätzen und Verfahren bekannt. In dieser Druckschrift wird eine Einsprüheinrichtung beschrieben, die über ein Sprührohr verfügt, das wenige Zentimeter lang ist, wobei das Sprührohr eine Sprühwolke in den Trommelraum abgibt. Die Sprüheinrichtung verfügt hierbei über eine Zuleitung, die mit einem Behälter verbunden ist, in dem das Kondensat gesammelt wird. Die Sprüheinrichtung umfasst weiter einen elektromagnetisch oder mittels Ultraschall angeregten Zerstäuber, der das Reinigungsmittel fein zerstäubt, so dass ein räumlich konzentriertes Abtropfen des Reinigungsmittels auf die Wäsche verhindert wird. Die genannten Zerstäuber sind aufwändig und teuer.From the EP 1 441 060 A1 is a clothes dryer with a device for spraying additives and methods known. In this document, a spraying device is described, which has a spray tube, which is a few inches long, the spray tube emits a spray cloud in the drum chamber. The spray device in this case has a supply line which is connected to a container in which the condensate is collected. The spray device further comprises an electromagnetically or ultrasonically excited atomizer, which finely atomizes the cleaning agent, so that a spatially concentrated dripping of the cleaning agent on the laundry is prevented. The mentioned atomizers are complex and expensive.

Bei herkömmlichen Teejet-Sprühdüsen befindet sich der Verwirbelungskörper fest am Düsengrundkörper. Dabei ändert sich das Sprühbild stark, je nachdem, wie weit die Düsenkappe auf den Grundkörper geschraubt ist. Ein großer Abstand zwischen Verwirbelungskörper und Austrittsöffnung bewirkt einen harten einzelnen Strahl, bei geringem Abstand entsteht der gewollte feine Nebel. Das Sprühverhalten ist wichtig für die einwandfreie Funktion der Rückbefeuchtung. Problematisch kann es werden, wenn der Benutzer des Wäschetrockners beispielsweise eine verkalkte Düsenkappe austauscht. Schraubt er die neue Düsenkappe nicht ganz auf den Grundkörper, so würde ein ungewollter harter Wasserstrahl anstatt des feinen Wassernebels entstehen.In conventional Teejet spray nozzles, the swirl body is fixed to the nozzle body. The spray pattern changes greatly, depending on how far the nozzle cap is screwed onto the base body. A large distance between Verwirbelungskörper and outlet opening causes a hard single jet at a small distance creates the desired fine mist. The spray behavior is important for the proper function of rewetting. It can be problematic if the user of the tumble dryer exchanges, for example, a calcified nozzle cap. He screws the new nozzle cap not quite on the body, so would create an unwanted hard water jet instead of the fine water mist.

Aus der KR 102012083779 A ist eine Sprühdüse für einen Trockner bekannt, bei der die Düse einen Düsengrundkörper, einen Verwirbelungskörper und eine den Verwirbelungskörper und den Düsengrundkörper wenigstens teilweise verdeckende Düsenkappe umfasst, und bei der der Verwirbelungskörper als vom Düsengrundkörper separates Bauteil in der Düsenkappe angeordnet ist.From the KR 102012083779 A a nozzle for a dryer is known in which the nozzle comprises a nozzle body, a swirling body and a swirling body and the nozzle body at least partially concealing nozzle cap, and wherein the swirling body is arranged as a separate nozzle body in the nozzle cap.

Der Erfindung stellt sich somit das Problem, bei einem Wäschetrockner der eingangs genannten Art eine zufriedenstellende Sprühfunktion sicherzustellen.The invention thus raises the problem of ensuring a satisfactory spray function in a tumble dryer of the type mentioned.

Erfindungsgemäß wird dieses Problem durch einen Wäschetrockner mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention this problem is solved by a tumble dryer with the features of claim 1. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

Die mit der Erfindung erreichbaren Vorteile ergeben sich dadurch, dass die Düse einen Düsengrundkörper, einen Verwirbelungskörper und eine den Verwirbelungskörper und den Düsengrundkörper wenigstens teilweise verdeckende Düsenkappe umfasst, dass der Verwirbelungskörper als vom Düsengrundkörper separates Bauteil in der Düsenkappe angeordnet ist, und dass der Verwirbelungskörper dadurch in einer definierten Position in die Düsenkappe einsetzbar ist, dass er in die Düsenkappe einschraubbar ist. Hierdurch können Düsenkappen mit justiertem Verwirbelungskörper eingesetzt werden, so dass das Sprühbild vordefiniert ist. Zum Erreichen der vordefinierten Position ist es vorteilhaft, wenn die Düsenkappe einen Anschlag aufweist, mittels dessen die Position des Verwirbelungskörpers im eingeschraubten Zustand festgelegt ist.The advantages achievable with the invention result from the fact that the nozzle comprises a nozzle main body, a swirling body and a nozzle cap at least partially obscuring the swirling body and the nozzle main body, that the swirling body is arranged as a separate component from the nozzle main body in the nozzle cap, and that the swirling body thereby can be used in a defined position in the nozzle cap, that it can be screwed into the nozzle cap. As a result, nozzle caps can be used with adjusted swirl body, so that the spray pattern is predefined. To achieve the predefined position, it is advantageous if the nozzle cap has a stop by means of which the position of the swirling body is fixed in the screwed-in state.

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,
  • Figuren 2 bis 5 die Düse des Wäschetrockners in verschiedenen Ansichten.
An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. It shows
  • FIG. 1 a sectional side view of a clothes dryer,
  • FIGS. 2 to 5 the nozzle of the tumble dryer in different views.

Die Figur 1 zeigt in der geschnittenen Seitenansicht einen Wäschetrockner 1 mit einer in einem Gehäuse 2 drehbar gelagerten Trommel 3. Der Antrieb der Trommel erfolgt über einen in den Figuren nicht dargestellten Motor. Der Wäschetrockner 1 verfügt über eine Beschickungsöffnung 4, die mittels einer Tür 5 verschließbar ist. Weiter umfasst der Wäschetrockner 1 ein Gebläse 6 und eine Heizeinrichtung 7 zur Erzeugung eines Prozessluftstromes. Der Prozessluftstrom wird, von der Heizeinrichtung 7 erwärmt, durch einen Prozessluftkanal 19 in die Trommel geblasen und nimmt aus der dort befindlichen Wäsche die Feuchtigkeit auf. Anschließend wird er durch den Prozessluftkanal 19 zu einer Kondensationseinrichtung in Form eines Wärmetauschers 8 geleitet und dort entfeuchtet. Das während des Trocknungsprozesses anfallende Kondensat wird zunächst im Bereich des Wärmetauschers 8 gesammelt, und dann über eine Leitung 9 einem Kondensatsammelbehälter 10 zugeführt. Der Kondensatsammelbehälter 10 ist, wie im oberen Bereich des Wäschetrockners 1 zu erkennen ist, als ausziehbarer Schub 11 ausgebildet. Der Kondensatsammelbehälter 10 wirkt mit einer programmgesteuerten Sprüheinrichtung 13 zur Rückbefeuchtung der getrockneten Wäsche in der Trommel 3 zusammen. Wie aus der Seitenansicht der Figur 1 zu erkennen ist, umfasst die Sprüheinrichtung 13 eine Zuleitung 14 mit Pumpe 15, welche das Kondensat oder vom Benutzer in den Sammelbehälter 12 eingefülltes Wasser mittels einer Düse 16 in den Trommelraum 6 sprüht. Die Entnahme des Kondensats aus dem Kondensatsammelbehälter 10 erfolgt mittels einer im oberen Deckelbereich 17 des Schubes 11 angeordneten Einrichtung 18 zusammen. Diese ist aus der EP 2 520 706 A2 bekannt und deshalb hier nicht näher beschrieben.The FIG. 1 shows in the sectional side view of a clothes dryer 1 with a rotatably mounted in a housing 2 Drum 3. The drive of the drum via an engine, not shown in the figures. The tumble dryer 1 has a feed opening 4 which can be closed by means of a door 5. Furthermore, the tumble dryer 1 comprises a fan 6 and a heating device 7 for generating a process air stream. The process air stream is heated by the heater 7, blown through a process air duct 19 into the drum and takes out of there laundry the moisture on. It is then passed through the process air channel 19 to a condensation device in the form of a heat exchanger 8 and dehumidified there. The condensate produced during the drying process is first collected in the region of the heat exchanger 8, and then fed via a line 9 to a condensate collecting tank 10. The condensate collection container 10 is, as can be seen in the upper region of the tumble dryer 1, formed as an extendable thrust 11. The condensate collecting tank 10 cooperates with a program-controlled spraying device 13 for rewetting the dried laundry in the drum 3. As seen from the side view of FIG. 1 can be seen, the spray device 13 comprises a supply line 14 with pump 15, which sprays the condensate or filled by the user in the sump 12 water by means of a nozzle 16 in the drum chamber 6. The removal of the condensate from the condensate collection container 10 takes place by means of a arranged in the upper lid portion 17 of the thrust 11 device 18. This is from the EP 2 520 706 A2 known and therefore not described here.

Die Figuren 2 bis 5 zeigen in verschiedenen Ansichten die Düse 16 zum Sprühen des Kondensats in den Trommelraum. Figur 2 zeigt die Hauptbestandteile der Düse, nämlich einen Düsengrundkörper, einen Verwirbelungskörper und eine Düsenkappe, in einer Explosionsansicht. In Figur 3 ist die Düse im zusammengebauten Zustand dargestellt, die Figuren 4 und 5 zeigen die zusammengebaute Düse im Schnitt (Figur 5 einen vergrößerten Teil aus Figur 4).The FIGS. 2 to 5 show in different views the nozzle 16 for spraying the condensate in the drum space. FIG. 2 shows the main components of the nozzle, namely a nozzle body, a swirling body and a nozzle cap, in an exploded view. In FIG. 3 the nozzle is shown in the assembled state, the FIGS. 4 and 5 show the assembled nozzle in section ( FIG. 5 an enlarged part FIG. 4 ).

Der Düsengrundkörper 20 umfasst einen Kern 21, eine Halteplatte 22 und ein Anschlussnippel 23. Der Kern ist mit einem Außengewinde 24 versehen. So kann der Grundkörper 20 in eine Bohrung an einem flachen Bauteil (nicht dargestellt) des Wäschetrockners eingesetzt werden, hier an der Luftführung hinter der Gerätefront, und mittels einer Überwurfmutter 25 befestigt werden. Die Halteplatte 22 bildet dann das Gegenlager. Der Bereich vor dem Außengewinde 24 ist mit einer umlaufenden Nut 26 versehen, in die eine O-Ring-Dichtung 27 eingelegt werden kann (siehe Figuren 4 und 5).The nozzle main body 20 comprises a core 21, a holding plate 22 and a connection nipple 23. The core is provided with an external thread 24. Thus, the main body 20 can be inserted into a bore on a flat component (not shown) of the tumble dryer, here at the air duct behind the front of the device, and be secured by means of a union nut 25. The holding plate 22 then forms the counter bearing. The area in front of the external thread 24 is provided with a circumferential groove 26, in which an O-ring seal 27 can be inserted (see FIGS. 4 and 5 ).

Der Verwirbelungskörper 30 ist ein hutförmiger Hohlkörper mit einem axial gerichteten Einlass 31 und zwei radialen Auslässen 32. Es verringert die Durchflussgeschwindigkeit und erhöht dadurch den Druck. Zwischen den Auslässen 32 und dem Einlass 31 besitzt der Verwirbelungskörper 30 ein Außengewinde 33. Vor den Auslässen ist eine umlaufende Phase 34 angeformt.The swirl body 30 is a hat-shaped hollow body with an axially directed inlet 31 and two radial outlets 32. It reduces the flow rate and thereby increases the pressure. Between the outlets 32 and the inlet 31, the swirl body 30 has an external thread 33. A circumferential phase 34 is formed in front of the outlets.

Die Düsenkappe 40 ist ebenfalls als hutförmiger Hohlkörper ausgeführt. Sie besitzt an ihrer Frontfläche eine schmale Düsenöffnung 41. Das Innere der Düsenkappe 40 wird durch Bohrungen 43, 45 und 46 gebildet, die vom hinteren Rand 42 bis zur Düsenöffnung 41 abgestuft im Durchmesser abnehmen. Die vom hinteren Rand 42 gesehen erste Bohrung 43 ist mit einem ersten Innengewinde 44 versehen. Es folgt eine Übergangsbohrung 45, dann eine Endbohrung 46. Die Endbohrung 46 ist auf ihrem ersten Teilstück mit einem zweiten Innengewinde 47 versehen. Der letzte Teil der Endbohrung 46 ist gewindelos, es schließt mit einer Phase 48 ab.The nozzle cap 40 is also designed as a hat-shaped hollow body. It has on its front surface a narrow nozzle opening 41. The interior of the nozzle cap 40 is formed by bores 43, 45 and 46, which decrease in diameter from the rear edge 42 to the nozzle opening 41. The first bore 43 seen from the rear edge 42 is provided with a first internal thread 44. This is followed by a transitional bore 45, then an end bore 46. The end bore 46 is provided on its first portion with a second internal thread 47. The last part of the end bore 46 is unthreaded, it concludes with a phase 48 from.

In das zweite Innengewinde 47 wird der Verwirbelungskörper 30 geschraubt, bis die beiden Phasen 34 und 48 aneinanderstoßen, siehe insbesondere Figur 5. Durch diesen Anschlag wird sichergestellt, dass Verwirbelungskörper 30 und Düsenöffnung 41 sich in einer definierten Position zueinander befinden. Hierdurch kann das Sprühbild der Düse 16 festgelegt werden. Die Düsenkappe 40 mit dem Verwirbelungskörper 30 wird dann auf das Außengewinde 24 des Kerns 21 geschraubt. Dabei liegt der O-Ring 27 an der Wand der Übergangsbohrung 45 an und dichtet Düsenkappe 40 und Düsengrundkörper 20 zueinander ab.In the second internal thread 47 of the swirling body 30 is screwed until the two phases 34 and 48 abut, see in particular FIG. 5 , By this stop it is ensured that swirl body 30 and nozzle opening 41 are in a defined position to each other. As a result, the spray pattern of the nozzle 16 can be set. The nozzle cap 40 with the swirl body 30 is then screwed onto the external thread 24 of the core 21. In this case, the O-ring 27 rests against the wall of the transitional bore 45 and seals nozzle cap 40 and nozzle main body 20 from each other.

Claims (2)

Wäschetrockner (1) mit einer Trocknungskammer (3) zur Aufnahme von Wäsche, wobei die Kammer (3) und die darin befindliche Wäsche mit vorzugsweise erwärmter Prozessluft beaufschlagt wird, mit einer Kondensationseinrichtung (8) zum Abscheiden von Feuchtigkeit aus der Prozessluft, welche einen Kondensatsammelbehälter (10) umfasst, wobei der Kondensatsammelbehälter (10) mit einer Sprüheinrichtung (13) zusammenwirkt, welche zur Rückbefeuchtung der getrockneten Wäsche das Kondensat mittels einer Pumpe (15) über eine Zuleitung (14) und eine Düse (16) in die Trocknungskammer (3) sprüht,
dadurch gekennzeichnet,
dass die Düse (16) einen Düsengrundkörper (20), einen Verwirbelungskörper (30) und eine den Verwirbelungskörper (30) und den Düsengrundkörper (20) wenigstens teilweise verdeckende Düsenkappe (40) umfasst, dass der Verwirbelungskörper (30) als vom Düsengrundkörper (20) separates Bauteil in der Düsenkappe (40) angeordnet ist und dass der Verwirbelungskörper dadurch in einer definierten Position in die Düsenkappe einsetzbar ist, dass er in die Düsenkappe (40) einschraubbar ist.Dryer (1) with a drying chamber (3) for receiving laundry, wherein the chamber (3) and the laundry therein is preferably subjected to heated process air, with a condensation device (8) for separating moisture from the process air, which a condensate collector (10), wherein the condensate collecting container (10) cooperates with a spraying device (13) for remaking the dried laundry, the condensate by means of a pump (15) via a feed line (14) and a nozzle (16) in the drying chamber (3 ) sprays,
characterized,
that the nozzle (16) comprises a nozzle body (20), a swirler (30) and the swirler (30) and the nozzle body (20) at least partially occluding the nozzle cap (40) so that the swirler (30) (from the nozzle body 20 ) Separate component in the nozzle cap (40) is arranged and that the Verwirbelungskörper is thereby inserted in a defined position in the nozzle cap, that it in the nozzle cap (40) can be screwed. Wäschetrockner nach Anspruch 1,
dadurch gekennzeichnet,
dass die Düsenkappe (40) einen Anschlag (48) aufweist, mittels dessen die definierte Position des Verwirbelungskörpers (30) festgelegt ist.Dryer according to claim 1,
characterized,
in that the nozzle cap (40) has a stop (48) by means of which the defined position of the swirling body (30) is fixed.
EP14401003.0A 2013-02-13 2014-01-09 Laundry dryer with a spray device for remoistening of dried laundry Active EP2775027B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310101391 DE102013101391B4 (en) 2013-02-13 2013-02-13 Tumble dryer with a spraying device for rewetting the dried laundry

Publications (2)

Publication Number Publication Date
EP2775027A1 true EP2775027A1 (en) 2014-09-10
EP2775027B1 EP2775027B1 (en) 2016-04-06

Family

ID=50071555

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Application Number Title Priority Date Filing Date
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DE (1) DE102013101391B4 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
EP3492647A1 (en) * 2017-12-01 2019-06-05 BSH Hausgeräte GmbH Spraying unit and washing machine
WO2020015914A1 (en) 2018-07-19 2020-01-23 Arcelik Anonim Sirketi Steam sprayer

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Publication number Priority date Publication date Assignee Title
US3667616A (en) * 1970-10-29 1972-06-06 Delavan Manufacturing Co Strainer
EP1441060A1 (en) 2003-01-25 2004-07-28 Electrolux Home Products Corporation N.V. Laundry dryer with a device for spraying additives and method therefor
WO2011053091A2 (en) * 2009-11-02 2011-05-05 Lg Electronics Inc. Washing machine
KR20120083779A (en) 2011-01-18 2012-07-26 두얼메카닉스 주식회사 Spray nozzle assembly for drum washer with dryer
EP2520706A2 (en) 2011-05-03 2012-11-07 Miele & Cie. KG Laundry dryer

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Publication number Priority date Publication date Assignee Title
AU2010201329B2 (en) * 2009-04-03 2012-05-10 Lg Electronics Inc. Fabric treating machine

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US3667616A (en) * 1970-10-29 1972-06-06 Delavan Manufacturing Co Strainer
EP1441060A1 (en) 2003-01-25 2004-07-28 Electrolux Home Products Corporation N.V. Laundry dryer with a device for spraying additives and method therefor
WO2011053091A2 (en) * 2009-11-02 2011-05-05 Lg Electronics Inc. Washing machine
KR20120083779A (en) 2011-01-18 2012-07-26 두얼메카닉스 주식회사 Spray nozzle assembly for drum washer with dryer
EP2520706A2 (en) 2011-05-03 2012-11-07 Miele & Cie. KG Laundry dryer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3492647A1 (en) * 2017-12-01 2019-06-05 BSH Hausgeräte GmbH Spraying unit and washing machine
CN109944024A (en) * 2017-12-01 2019-06-28 Bsh家用电器有限公司 Injection unit and washings handle utensil
CN109944024B (en) * 2017-12-01 2022-10-11 Bsh家用电器有限公司 Spray unit and washing treatment device
WO2020015914A1 (en) 2018-07-19 2020-01-23 Arcelik Anonim Sirketi Steam sprayer

Also Published As

Publication number Publication date
EP2775027B1 (en) 2016-04-06
DE102013101391A1 (en) 2014-08-14
DE102013101391B4 (en) 2015-05-07

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