EP1538255A1 - Cover for a laundry dryer and process for its assembly - Google Patents

Cover for a laundry dryer and process for its assembly Download PDF

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Publication number
EP1538255A1
EP1538255A1 EP03027650A EP03027650A EP1538255A1 EP 1538255 A1 EP1538255 A1 EP 1538255A1 EP 03027650 A EP03027650 A EP 03027650A EP 03027650 A EP03027650 A EP 03027650A EP 1538255 A1 EP1538255 A1 EP 1538255A1
Authority
EP
European Patent Office
Prior art keywords
cover
dryer
tumble dryer
designed
channel
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
EP03027650A
Other languages
German (de)
French (fr)
Other versions
EP1538255B1 (en
Inventor
Jens Köhne
Michael Dr. Caspers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DBK David and Baader GmbH
Original Assignee
DBK David and Baader GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34442935&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1538255(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by DBK David and Baader GmbH filed Critical DBK David and Baader GmbH
Priority to EP03027650A priority Critical patent/EP1538255B1/en
Priority to DE50302587T priority patent/DE50302587D1/en
Priority to AT03027650T priority patent/ATE319874T1/en
Priority to US10/999,813 priority patent/US8371040B2/en
Priority to JP2004346859A priority patent/JP2005169106A/en
Priority to KR1020040100094A priority patent/KR100676007B1/en
Publication of EP1538255A1 publication Critical patent/EP1538255A1/en
Publication of EP1538255B1 publication Critical patent/EP1538255B1/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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 
    • 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 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • 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
    • D06F58/10—Drying cabinets or drying chambers having heating or ventilating means
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/56—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to air ducts, e.g. position of flow diverters
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/28—Electric heating
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/30—Blowers

Definitions

  • the invention relates to a cover for a tumble dryer, during operation a gas stream for drying damp laundry is heated, the cover as at least a portion of an outer wall, in particular a rear wall, of the tumble dryer configured and from the cover by a flow through the gas stream Channel is at least partially formed.
  • clothes dryers are made by a rotatable laundry drum with a drive together with an air supply and heating elements for the air supply attached to a base frame and then the walls on the base frame to be assembled. From the air supply, the gas stream is used to dry the laundry passed through a channel in which the gas stream simultaneously through the heating element is heated. This channel is located inside the walls after attaching the walls of the clothes dryer and is at least in sections of a wall, typically the rear wall of the tumble dryer limited.
  • the object of the present invention is to provide To reduce manufacturing costs and the ease of installation of the tumble dryer improve.
  • the cover as a heating unit is configured, in the at least one heating element of the gas stream during operation the tumble dryer is integrated flow around.
  • This solution is structurally simple and has the advantage that the cover as a heating unit can be pre-assembled and lighter than the prior art Installation and removal of at least one heating element allows. Leave it reduce the assembly costs and thus also the manufacturing cost of the tumble dryer.
  • the inventive design of the cover as a heating unit is the Heating element already mitaustalk and when removing the cover thus easily accessible.
  • the inventive solution to a separate tumble dryer to be installed heating element housing are dispensed with, as is the case with tumble dryers is used in the prior art.
  • the Housing of the heating element also forms in known dryers demolition edges, such as. at the passages in the housing. Without the housing, the so far in Purchase avoided demolition edges avoided, thereby improving the flow of air.
  • the double function as a cover and heating element so far inside the tumble dryer for heating and the channels used space so that e.g. a larger laundry drum, which is usually arranged in front of the heating unit, can be used.
  • the cover according to the invention can be realized by different, independent, each be further developed for advantageous embodiments. To this Embodiments and the advantages associated with each of the embodiments is in The following is briefly mentioned.
  • the cover may comprise fastening means, with which the cover from the outside of the dryer preferably detachable attachable.
  • fastening means of the cover as Catches are designed with which the cover on the clothes dryer preferably is releasably latched.
  • the cover can be even faster be attached to the dryer, thereby increasing the assembly time and thus To reduce the installation costs significantly, since covers from the state of Technique with a variety of screw connections time and cost-intensive attached become.
  • the cover may include a sealing lip through which the cover essentially gas-tight attachable to the tumble dryer.
  • the sealing lip can be made of a resilient plastic to material tolerances both to be able to compensate for the cover as well as the tumble dryer.
  • the cover can be sealed by a labyrinth seal. At the labyrinth seal Another seal may be an additional sealing labyrinth arrangement be surrounded.
  • the cover can form a flange surface, with the cover on the dryer is attachable.
  • a flange surface the advantage that they can be designed relatively large area and the large area Flange surface can be used as a sealing surface or for attaching fasteners can.
  • the flange surface can also serve as an adhesive surface for attaching the cover be used on the tumble dryer with an adhesive.
  • the cover in a further advantageous embodiment of a be made electrically insulating material.
  • the electrically operated Insulated heating element and no current can flow to the outside.
  • the Risk of electric shock when touching the cover of the tumble dryer avoided and applicable safety guidelines are adhered to.
  • These Design of the cover according to the invention also prevents unwanted electrical effects, such. B. the possible spread of leakage currents.
  • the heating unit separately in a housing taken and in addition to the Back wall, which, in comparison to the solution according to the invention, and more expensive.
  • the cover configured as a heating unit comprises at least one sensor, with which the temperature of the gas stream is measurable. This allows the gas stream For example, be measured before or behind the heating element to the To regulate energy supply of the heating element and thereby the gas flow optimally heat.
  • a sensor can also be used as a protective thermostat of the heating element and thus prevent overheating of the heating element.
  • the sensor can be arranged for example in the region of the channel.
  • a problem of today's tumble dryer is that due to the limited Space inside the clothes dryer, the heat energy of the heating element easily is directed to the outside. This leads to a low efficiency in the Heating the gas stream. On the other hand, there is a risk that the outside surfaces of the clothes dryer heat so much that a user touches can burn these surfaces.
  • the cover can in an advantageous development of a heat-insulating Material be made with low thermal conductivity. This will not heat energy wasted and also heats the cover on its outside not so strong on that the risk of burning when touching the cover consists. This helps to ensure that mandatory security policies are in place permissible outside temperature of the tumble dryer are respected and in particular the energy consumption can be lowered.
  • the cover may preferably be made of a temperature-resistant material. The thermal insulation can also be improved by adding extra at high temperature areas Protective areas of heat-resistant materials are provided.
  • the heating unit can be a heat protection body comprising at least partially surrounding the at least one heating element and the environment protects against the influence of heat.
  • the heat protection body in an advantageous development of the one Form gas flow through flow channel.
  • the gas stream is targeted and with low losses to the at least one Conducted heating element, so that ensures effective heating of the gas stream is.
  • the heating element in the flow channel be arranged.
  • the Heat shield made of a heat-insulating and temperature-resistant material, preferably a plastic.
  • the heat shield can also be made of a metal.
  • the metallic one Heat protection body has the advantage that it is simple and inexpensive, for example by deep drawing, can be produced.
  • the heat protection body made of a corrosion-resistant material eg. B. a CrNi steel, be prepared for a corrosion of the heat protection body, for example in the tumble dryer Moisture is exposed to prevent.
  • the cover may comprise further fastening means, on which the heat protection body is releasably attached. This has the advantage that the heat protection body easily and without additional fasteners to be mounted on the cover can and thus reduce the assembly and production of the heating unit.
  • At least one can be provided in the cover Contact element integrated with the heating unit on a machine side Counter contact is electrically connected.
  • the contact element can be configured as part of a plug connection be, thereby ensuring a quick and easy connection of the contact element is.
  • the connection of the heating unit can also by a single, possibly standardized Plug element happen, thereby further the required connection time reduced.
  • the plug element is in a corresponding mating connector element of the clothes dryer inserted.
  • the contact element in a further advantageous embodiment in the Cover be integrated to attach the cover to the tumble dryer further simplify.
  • the cover may be formed as a container-shaped housing, which an injection molded part is designed. Injection molded parts can with a high dimensional accuracy are produced and are very, if they are produced in large quantities inexpensive. Due to the container-shaped design of the housing, e.g. with a high edging, the cover is in spite of the heating unit's arranged items attachable to a flat wall and thereby forms the flow through the gas stream Channel off.
  • the container-shaped housing as a plastic part be configured, the sections with at least one protection area another material, preferably a metal sheet is provided.
  • the at least one protection area can be arranged in a region, in which a high temperature occurs during operation. This will heat insulation and temperature resistance of the housing improved.
  • the cover from the outside to the Clothes dryer be attached. This has the advantage that the thus designed cover is particularly easy to mount on the dryer.
  • the invention relates in addition to the cover described above and their embodiments also a clothes dryer for drying wet laundry with a gas stream, the clothes dryer with walls, an air supply and with one of The gas flow through the flow channel is executed.
  • the dryer comprises a cover after a the above embodiments and the channel is at least partially formed by the cover.
  • the invention relates in addition to the above-mentioned devices and their further Embodiments also a method for assembling a clothes dryer by in the operation of a gas stream for drying damp laundry is heated.
  • a cover to a heating unit by attaching at least one Heating element is pre-assembled, a channel is formed, the cover from the outside attached to a wall of the tumble dryer and the duct with an air supply the tumble dryer is connected.
  • the cover by detachable or insoluble Latching on the wall can be attached to the assembly of the tumble dryer too simplify. For the same reason, a contact to the power supply of the heating element When attaching the cover to the wall to be closed simultaneously. Further, the channel may be attached to the wall of the clothes dryer during the attachment of the cover sealed at the same time substantially gas-tight.
  • the designed as a heating unit cover 1 comprises a housing 2, a heat protection body 3 and a plurality of heating elements 4.
  • the example shown in FIGS. 1 to 3 Embodiment of the cover according to the invention contains four side by side and superimposed heating elements 4.
  • the heating elements 4 are by two laterally arranged carrier plates 5 held together as a one-piece modular unit.
  • the heating elements 4 are positioned relative to each other so that a flowing past Gas stream can be optimally heated.
  • the heating elements 4 are arranged inside the heat protection body 3, which is the Heating elements of the environment thermally insulated while a flow channel forms a gas stream, preferably an air stream, as well as possible pass past the heating elements 4.
  • the heat protection body 3 has for this purpose Inlet opening 6 and an outlet opening 7.
  • the air flow to be heated flows at the inlet opening into the heat shield 3 and is characterized by the shape of the Heat protection body 3 through the heating elements 4 therethrough or passed along, whereby the air flow heats up.
  • the heated air stream flows at the Outlet opening 7 from the heat shield 3 addition.
  • the heat shield 3 is made of a corrosion-resistant metal sheet, for example, a CrNi steel sheet produced.
  • the heat-shielding effect of the heat shield 3 is particularly important because in the interior of the heat protection body in the region of the heating elements 4 temperatures up to 600 ° C can occur.
  • the surface temperature on the outside may do not exceed a permissible value, for example according to a VDE guideline 85 ° C.
  • the Heat protection body be designed with a reflective surface.
  • the heat protection body 9 also has a low thermal conductivity, so that the extreme high temperature from the area of the heating elements 4 not to the outer surface the cover 1 can be transmitted. Thus, the outer surface of the cover 1 can be touched by an operator without the risk of burning.
  • the cover 1 with the pre-assembled heating element 4 preassembled easily can be, the heat protection body 3, for example, made in two parts. He stipulates from a lower part 9 and an upper part 10.
  • the lower part 9 is in the exemplary embodiment in Fig. 1 to 3 a punched sheet metal part at the through Bending the baffle 8 is formed.
  • the upper part 10 of the heat shield 3 is in the embodiment in Fig. 1 to 3 produced by deep drawing. In the upper one Part 10 of the heat shield 3 is adjacent to the inlet opening 6 and the outlet opening 7 in each case at least one recess 11 formed in the at least one temperature sensor 12 is attached.
  • the heating of the air flow within the Cover 1 measured and the heating power of the heating elements 4 are regulated.
  • a control circuit are constructed, with which the heating elements 4 are controlled and the temperature of the air flow is regulated.
  • more than two temperature sensors can be used to control the temperature to determine at various points of the air flow. For example, the temperature the air flow in front of and behind the heating element 4 are measured. Also for example, another temperature sensor may be near the heating elements 4 as a protective thermostat be arranged to prevent excessive temperature rise of the heating elements 4 to recognize and thus prevent overheating.
  • the heat protection body 3 with the heating elements 4 is attached to the housing 2.
  • the housing 2 is provided with fastening means 13 for releasably attaching the cover 1 provided on a tumble dryer.
  • the fastening means 13 are hereafter described in more detail.
  • the cover 1 further comprises a sealing lip 14, by the cover 1 substantially gas-tight attachable to the tumble dryer is. This will prevent some of the heated airflow from going out is delivered.
  • the housing 2 of the embodiment shown in FIGS. 1 to 3 is made of a heat-insulating plastic. This is beneficial to the high temperature in the area of the heating elements 4 not to the outer surface of the Cover 1 is transmitted for the reasons mentioned above. Furthermore, that is Housing 2 made of an electrically insulating plastic to the heating elements 4 opposite the remaining parts of the tumble dryer and also to the outside electric to isolate. Furthermore, by the execution of the housing 2 from a electrically insulating material counteracted spreading creepage currents.
  • a temperature-resistant material can be used in certain areas z.
  • B. a sheet metal part are attached to the housing 2, so that in this Protected area the housing 2 is protected.
  • the housing 2 is designed container-shaped and has a circumferential container wall 2a, which encloses an inner space 2b. hereby is the cover 1 according to the invention, in which the heat protection body 3 with the heating elements 4 are mounted in the interior 2b of the housing 2 and not over the container wall 2a protrude, to a wall 17 'of a clothes dryer 17th mountable. As shown, the wall 17 'may be flat.
  • the housing 2 of the embodiment of the invention shown in FIGS. 1 to 3 Cover 1 is designed as an injection molded part.
  • the production of the housing In the injection molding process has the advantage that a large number of inexpensive in high dimensional accuracy can be produced.
  • the cover 1 further comprises at least one contact element 15, through which the Cover 1 with its heating elements 4 and 12 temperature sensors electrically connected is.
  • the contact element 15 shown in FIGS. 1 to 3 is for example designed as a standardized plug and integrated in the housing 2.
  • An appropriate one Mating connector is attached to the tumble dryer, allowing itself in the mounting position the cover 1 makes a plug connection by itself.
  • About the contact element 15 are both the heating elements 4 and the temperature sensors 12th electrically connectable. This has the advantage that only one contact element for electrical Connecting all parts of the cover 1 is necessary.
  • the housing 2 has further fastening means 16, on which the heat protection body. 3 is releasably attached.
  • the lower part 9 of the Heat protection body 3 in the locking means designed as further fastening means 16 are engaged.
  • the preassembled module unit of heating elements. 4 and carrier plates 5 placed on the lower part 9.
  • the upper part 10 of the heat shield 3 and also attached to the other fasteners 16 locked.
  • the heat protection body 3 can fixing means for fixing the heating elements 4 contained within the heat shield 3.
  • the other fastening means 16 are simultaneously designed in the form of ribs to enhance the stability of the housing 2.
  • Fig. 4 shows the rear wall of a clothes dryer 17 with the attached invention Cover 1 of FIGS. 1 to 3.
  • FIG. 5 and Fig. 8 the detail A of FIG. 4 shown in perspective.
  • the cover 1 is not yet mounted and from the tumble dryer 17 spaced.
  • In the tumble dryer 17 is at least one Hole 18 for receiving the fastener 13 of the cover 1 executed.
  • Fig. 6 and Fig. 9 show the detail A of FIG. 4 with mounted cover 1.
  • the wedge-like than Clips or detent running fasteners 13 is shown in Fig. 5 in the hole 18, as a counter-detent is executed, engaged.
  • the sealing lip 14 is in the assembled state squeezes and seals the cover 1 is substantially airtight or gas-tight from.
  • the compressed sealing lip 14 generates a clamping force, the the cover 1 is pushed away from the tumble dryer 17, whereby during operation of the tumble dryer rattling of the fastener 13 in the hole 18 is prevented.
  • the cover 1 is thereby mounted vibration-proof on the washer 17.
  • Fig. 7 shows a further embodiment of the cover 1 according to the invention mounted on a clothes dryer 17.
  • Fig. 8 shows a detail B of Fig. 7, wherein the cover 1 is shown prior to assembly with the tumble dryer 17.
  • the embodiment differs the cover 1 of Fig. 7 to 9 by differently configured fastening means 13 and a correspondingly different hole 18.
  • the fastening means shown in Fig. 8 13 is designed dowel-shaped.
  • the hole 18 is circular and as a counter-catch designed for the fastening means 13.
  • Fig. 9 shows the embodiment of cover 1 according to the invention from FIGS. 7 and 8 in the assembled state. Similar As in the embodiment in Figs. 4 to 6, the sealing lip 14 is in the assembled state compressed with the properties already described above.
  • the cover 1 is attached to the outside of a wall 17 '.
  • Inside the tumble dryer 17 there is an air supply, e.g. with a fan, for generating a gas stream, with which the wet laundry is dried.
  • the walls 17 ' are For example, attached to a base frame.
  • the cover 1 forms with the wall 17 'in the operation of the clothes dryer 17 flowed through by the gas stream Channel out, through which the gas stream in the direction of the laundry to be dried leitbarer is.
  • FIGS. 1-3 show a possible embodiment of the cover according to the invention 1.
  • the cover 1 may alternatively have a flange surface instead of the sealing lip 14 executed.
  • This flange can both the attachment of the cover. 1 on a tumble dryer as well as a sealing surface opposite the tumble dryer serve.
  • As screws or rivets for attachment the cover 1 may be arranged on the tumble dryer.
  • the cover of the invention is applied to the flange in the Mounting the cover 1 on the dryer a sealant on the flange applied.
  • an adhesive sealant the cover 1 attached by the sealant to the dryer and sealed at the same time become.
  • the sealing of the cover according to the invention relative to the tumble dryer may alternatively be designed as a labyrinth seal.

Abstract

The cover (1) forms at least one section of an outer wall, especially a rear wall, of the washer/dryer and forms at least part of a channel through which a flow of gaseous material passes. The cover forms a heating unit in which at least one heating element is integrated so as to be within the flow stream of a gaseous material when the washer/dryer is operating. An independent claim is also included for a method of assembling a washer/dryer.

Description

Die Erfindung betrifft eine Abdeckung für einen Wäschetrockner, durch den im Betrieb ein Gasstoffstrom zum Trocknen feuchter Wäsche erwärmbar ist, wobei die Abdeckung als wenigstens ein Abschnitt einer Außenwand, insbesondere einer Rückwand, des Wäschetrockners ausgestaltet und von der Abdeckung ein von dem Gasstoffstrom durchströmbarer Kanal wenigstens abschnittsweise ausgebildet ist.The invention relates to a cover for a tumble dryer, during operation a gas stream for drying damp laundry is heated, the cover as at least a portion of an outer wall, in particular a rear wall, of the tumble dryer configured and from the cover by a flow through the gas stream Channel is at least partially formed.

Üblicherweise werden Wäschetrockner hergestellt, indem eine drehbare Wäschetrommel mit einem Antrieb zusammen mit einer Luftzufuhr und Heizelementen für die Luftzufuhr an einem Grundgestell befestigt und anschließend die Wände am Grundgestell montiert werden. Von der Luftzufuhr wird der Gasstoffstrom zum Trocknen der Wäsche durch einen Kanal geleitet, in dem der Gasstoffstrom gleichzeitig durch das Heizelement erwärmt wird. Dieser Kanal befindet sich nach dem Anbringen der Wände im Inneren des Wäschetrockners und wird zumindest abschnittsweise von einer Wand, typischerweise der Rückwand des Wäschetrockners begrenzt.Typically, clothes dryers are made by a rotatable laundry drum with a drive together with an air supply and heating elements for the air supply attached to a base frame and then the walls on the base frame to be assembled. From the air supply, the gas stream is used to dry the laundry passed through a channel in which the gas stream simultaneously through the heating element is heated. This channel is located inside the walls after attaching the walls of the clothes dryer and is at least in sections of a wall, typically the rear wall of the tumble dryer limited.

Aufgrund dieser Anordnung ist die Montage von Wäschetrocknern aufwändig und Wartungsarbeiten an der Luftzufuhr und am Heizelement gestalten sich oft schwierig.Due to this arrangement, the installation of dryers is laborious and maintenance The air supply and the heating element are often difficult.

Angesichts dieser Probleme besteht die Aufgabe der vorliegenden Erfindung darin, die Herstellungskosten zu senken und die Montagefreundlichkeit des Wäschetrockners zu verbessern.In view of these problems, the object of the present invention is to provide To reduce manufacturing costs and the ease of installation of the tumble dryer improve.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Abdeckung als Heizeinheit ausgestaltet ist, in der wenigstens ein Heizelement von dem Gasstoffstrom im Betrieb des Wäschetrockners umströmbar integriert ist.This object is achieved in that the cover as a heating unit is configured, in the at least one heating element of the gas stream during operation the tumble dryer is integrated flow around.

Diese Lösung ist konstruktiv einfach und hat den Vorteil, dass die Abdeckung als Heizeinheit vormontiert werden kann und einen gegenüber dem Stand der Technik leichteren Ein- und Ausbau des wenigstens einen Heizelementes ermöglicht. Dadurch lassen sich der Montageaufwand und damit auch die Herstellkosten des Wäschetrockners reduzieren. This solution is structurally simple and has the advantage that the cover as a heating unit can be pre-assembled and lighter than the prior art Installation and removal of at least one heating element allows. Leave it reduce the assembly costs and thus also the manufacturing cost of the tumble dryer.

Durch die erfindungsgemäße Ausgestaltung der Abdeckung als Heizeinheit wird das Heizelement bereits beim Abnehmen der Abdeckung gleichzeitig mitausgebaut und ist dadurch gut zugänglich.The inventive design of the cover as a heating unit is the Heating element already mitausgebaut and when removing the cover thus easily accessible.

Darüber hinaus kann durch die erfindungsgemäße Lösung auf ein separat im Wäschetrockner zu installierendes Heizelementgehäuse verzichtet werden, wie es bei Wäschetrocknern aus dem Stand der Technik verwendet wird. Hierdurch wird Material eingespart, wodurch sich die Herstellkosten des Wäschetrockners weiter reduzieren. Das Gehäuse des Heizelementes bildet zudem bei bekannten Wäschetrocknern Abrisskanten, wie z.B. an den Durchlässen im Gehäuse. Ohne das Gehäuse werden die bislang in Kauf genommenen Abrisskanten vermieden und dadurch die Luftströmung verbessert. Weiterhin wird bei der erfindungsgemäßen Lösung durch die Doppelfunktion als Abdeckung und Heizelement der bislang im Inneren des Wäschetrockners für die Heizung und die Kanäle verwendete Bauraum frei, so dass z.B. eine größere Wäschetrommel, die üblicherweise vor der Heizeinheit angeordnet ist, verwendet werden kann.In addition, by the inventive solution to a separate tumble dryer to be installed heating element housing are dispensed with, as is the case with tumble dryers is used in the prior art. This saves material, which further reduces the manufacturing costs of the tumble dryer. The Housing of the heating element also forms in known dryers demolition edges, such as. at the passages in the housing. Without the housing, the so far in Purchase avoided demolition edges avoided, thereby improving the flow of air. Furthermore, in the solution according to the invention by the double function as a cover and heating element so far inside the tumble dryer for heating and the channels used space, so that e.g. a larger laundry drum, which is usually arranged in front of the heating unit, can be used.

Die erfindungsgemäße Abdeckung kann durch verschiedene, voneinander unabhängige, jeweils für sich vorteilhafte Ausgestaltungen weiterentwickelt werden. Auf diese Ausgestaltungen und die mit den Ausgestaltungen jeweils verbundenen Vorteile wird im Folgenden kurz eingegangen.The cover according to the invention can be realized by different, independent, each be further developed for advantageous embodiments. To this Embodiments and the advantages associated with each of the embodiments is in The following is briefly mentioned.

So kann in einer vorteilhaften Ausgestaltung die Abdeckung Befestigungsmittel umfassen, mit denen die Abdeckung von außen an dem Wäschetrockner vorzugsweise lösbar anbringbar ist. Dies hat den Vorteil, dass die Abdeckung leicht und schnell an dem Wäschetrockner montierbar ist. Ferner können die Befestigungsmittel der Abdeckung als Rasten ausgestaltet sein, mit denen die Abdeckung an dem Wäschetrockner vorzugsweise lösbar verrastbar ist. Bei dieser Ausgestaltung kann die Abdeckung noch schneller an dem Wäschetrockner angebracht werden, wodurch sich die Montagezeit und damit die Montagekosten erheblich reduzieren, da Abdeckungen aus dem Stand der Technik mit einer Vielzahl von Schraubverbindungen zeit- und kostenintensiv befestigt werden.Thus, in an advantageous embodiment, the cover may comprise fastening means, with which the cover from the outside of the dryer preferably detachable attachable. This has the advantage of having the cover light and fast on the tumble dryer can be mounted. Furthermore, the fastening means of the cover as Catches are designed with which the cover on the clothes dryer preferably is releasably latched. In this embodiment, the cover can be even faster be attached to the dryer, thereby increasing the assembly time and thus To reduce the installation costs significantly, since covers from the state of Technique with a variety of screw connections time and cost-intensive attached become.

Um den in dem Wäschetrockner strömenden Gasstoffstrom nicht nach außen entweichen zu lassen, kann die Abdeckung eine Dichtlippe umfassen, durch welche die Abdeckung im Wesentlichen gasdicht an dem Wäschetrockner anbringbar ist. Die Dichtlippe kann aus einem elastischen Kunststoff hergestellt sein, um Materialtoleranzen sowohl an der Abdeckung als auch an dem Wäschetrockner ausgleichen zu können. Ferner kann die Abdeckung durch eine Labyrinthdichtung abgedichtet werden. Bei der Labyrinthdichtung kann eine weitere Dichtung von einer zusätzlich abdichtenden Labyrinthanordnung umgeben sein.Do not escape to the outside in the tumble dryer flowing gas stream to let the cover may include a sealing lip through which the cover essentially gas-tight attachable to the tumble dryer. The sealing lip can be made of a resilient plastic to material tolerances both to be able to compensate for the cover as well as the tumble dryer. Further The cover can be sealed by a labyrinth seal. At the labyrinth seal Another seal may be an additional sealing labyrinth arrangement be surrounded.

In einer vorteilhaften Ausgestaltung kann die Abdeckung eine Flanschfläche ausbilden, mit der die Abdeckung an dem Wäschetrockner anbringbar ist. Eine Flanschfläche hat den Vorteil, dass sie relativ großflächig ausgestaltet werden kann und die großflächige Flanschfläche als Dichtfläche oder zum Anbringen von Befestigungsmitteln benutzt werden kann. Die Flanschfläche kann auch als Klebefläche zum Anbringen der Abdeckung an dem Wäschetrockner mit einem Klebstoff benutzt werden.In an advantageous embodiment, the cover can form a flange surface, with the cover on the dryer is attachable. Has a flange surface the advantage that they can be designed relatively large area and the large area Flange surface can be used as a sealing surface or for attaching fasteners can. The flange surface can also serve as an adhesive surface for attaching the cover be used on the tumble dryer with an adhesive.

Ferner kann die Abdeckung in einer weiteren vorteilhaften Ausgestaltung aus einem elektrisch isolierenden Material hergestellt sein. Hierdurch wird das elektrisch betriebene Heizelement isoliert und es kann kein Strom nach außen fließen. Außerdem wird die Gefahr eines elektrischen Schlages beim Berühren der Abdeckung des Wäschetrockners vermieden und geltende Sicherheitsrichtlinien werden eingehalten. Diese Ausgestaltung der erfindungsgemäßen Abdeckung verhindert außerdem ungewünschte elektrische Effekte, wie z. B. die mögliche Verbreitung von Kriechströmen. Hinsichtlich der thermischen und elektrischen Isolation wird bei Wäschetrocknern aus dem Stand der Technik die Heizungseinheit separat in ein Gehäuse gefasst und zusätzlich mit der Rückwand abgedeckt, was im Vergleich zu der erfindungsgemäßen Lösung material- und kostenintensiver ist.Furthermore, the cover in a further advantageous embodiment of a be made electrically insulating material. As a result, the electrically operated Insulated heating element and no current can flow to the outside. In addition, the Risk of electric shock when touching the cover of the tumble dryer avoided and applicable safety guidelines are adhered to. These Design of the cover according to the invention also prevents unwanted electrical effects, such. B. the possible spread of leakage currents. Regarding The thermal and electrical insulation of tumble dryers from the state the technology, the heating unit separately in a housing taken and in addition to the Back wall, which, in comparison to the solution according to the invention, and more expensive.

Um die Temperatur des Gasstoffstroms mit dem Heizelement regeln zu können, kann die als Heizeinheit ausgestaltete Abdeckung wenigstens einen Messfühler umfassen, mit dem die Temperatur des Gasstoffstroms messbar ist. Hierdurch kann der Gasstoffstrom beispielsweise vor oder auch hinter dem Heizelement gemessen werden, um die Energiezufuhr des Heizelementes zu regeln und dadurch den Gasstoffstrom optimal zu beheizen. Ein Messfühler kann auch als Schutzthermostat des Heizelementes verwendet werden und so ein Überhitzen des Heizelements verhindern. Der Messfühler kann beispielsweise im Bereich des Kanals angeordnet sein. In order to control the temperature of the gas stream with the heating element, can the cover configured as a heating unit comprises at least one sensor, with which the temperature of the gas stream is measurable. This allows the gas stream For example, be measured before or behind the heating element to the To regulate energy supply of the heating element and thereby the gas flow optimally heat. A sensor can also be used as a protective thermostat of the heating element and thus prevent overheating of the heating element. The sensor can be arranged for example in the region of the channel.

Ein Problem der heutigen Wäschetrockner besteht darin, dass aufgrund des begrenzten Bauraums im Inneren des Wäschetrockners die Wärmeenergie des Heizelements leicht nach außen geleitet wird. Dies führt zum einen zu einem niedrigen Wirkungsgrad bei der Aufheizung des Gasstoffstroms. Zum anderen besteht die Gefahr, dass sich die Außenflächen des Wäschetrockners so stark erhitzen, dass sich ein Benutzer beim Berühren dieser Flächen verbrennen kann.A problem of today's tumble dryer is that due to the limited Space inside the clothes dryer, the heat energy of the heating element easily is directed to the outside. This leads to a low efficiency in the Heating the gas stream. On the other hand, there is a risk that the outside surfaces of the clothes dryer heat so much that a user touches can burn these surfaces.

Um die durch das Heizelement erzeugte Wärmeenergie nicht nach außen zu leiten, kann die Abdeckung in einer vorteilhaften Weiterbildung aus einem wärmeisolierenden Material mit geringer Wärmeleitfähigkeit hergestellt sein. Hierdurch wird keine Wärmeenergie verschwendet und außerdem heizt sich die Abdeckung an ihrer Außenseite nicht so stark auf, dass die Gefahr eines Verbrennens beim Berühren der Abdeckung besteht. Dies trägt dazu bei, dass vorgeschriebene Sicherheitsrichtlinien bezüglich der zulässigen Außentemperatur des Wäschetrockners eingehalten werden und insbesondere der Energieverbrauch gesenkt werden. Weiterhin kann die Abdeckung vorzugsweise aus einem temperaturbeständigen Material hergestellt sein. Die Wärmeisolierung kann auch dadurch verbessert werden, dass an Bereichen hoher Temperatur zusätzliche Schutzbereiche aus wärmebeständigen Materialien vorgesehen sind.In order not to conduct the heat energy generated by the heating element to the outside, The cover can in an advantageous development of a heat-insulating Material be made with low thermal conductivity. This will not heat energy wasted and also heats the cover on its outside not so strong on that the risk of burning when touching the cover consists. This helps to ensure that mandatory security policies are in place permissible outside temperature of the tumble dryer are respected and in particular the energy consumption can be lowered. Furthermore, the cover may preferably be made of a temperature-resistant material. The thermal insulation can also be improved by adding extra at high temperature areas Protective areas of heat-resistant materials are provided.

In einer weiteren vorteilhaften Ausführungsform kann die Heizeinheit einen Wärmeschutzkörper umfassen, der das wenigstens eine Heizelement wenigstens teilweise umgibt und die Umgebung vor dem Wärmeeinfluss sichert. Dies hat den Vorteil, dass ein zusätzlicher Wärmeschutz der Heizeinheit nach außen besteht, um ein ungewolltes Erwärmen der Umgebung der Abdeckung sowohl nach außen und als auch zum Innern des Wäschetrockners zu verhindern. Durch diese Ausführungsform der vorliegenden Erfindung kann auf einfache Weise die nach geltenden Sicherheitsvorschriften für Wäschetrockner zulässige Außentemperatur der Außenwand von etwa 85°C auch bei den in der Heizeinheit herrschenden Innentemperaturen bis zu etwa 600°C gewährleistet werden.In a further advantageous embodiment, the heating unit can be a heat protection body comprising at least partially surrounding the at least one heating element and the environment protects against the influence of heat. This has the advantage of being a additional heat protection of the heating unit to the outside, to prevent unwanted heating the environment of the cover both to the outside and to the inside to prevent the tumble dryer. By this embodiment of the present Invention can easily comply with applicable safety regulations for tumble dryers permissible outside temperature of the outside wall of about 85 ° C also at the In the heating unit prevailing internal temperatures up to about 600 ° C guaranteed become.

Ferner kann der Wärmeschutzkörper in einer vorteilhaften Weiterbildung einen von dem Gasstoffstrom durchströmbaren Strömungskanal ausbilden. Durch den Strömungskanal wird der Gasstoffstrom gezielt und unter geringen Verlusten zu dem wenigstens einen Heizelement geleitet, so dass eine effektive Erwärmung des Gasstoffstroms gewährleistet ist. Außerdem wird durch den Strömungskanal der Gasstoffstrom nach dem Durchströmen der Heizeinheit unter geringen Strömungsverlusten in die Wäschetrommel des Wäschetrockners hineingeleitet, wodurch die erzeugte Wärmeenergie der Wäsche effektiv und energiesparend zugeführt wird. Um einen guten Wärmeübergang zwischen dem Heizelement und dem Gasstoffstrom zu erreichen, kann das Heizelement im Strömungskanal angeordnet sein.Furthermore, the heat protection body in an advantageous development of the one Form gas flow through flow channel. Through the flow channel the gas stream is targeted and with low losses to the at least one Conducted heating element, so that ensures effective heating of the gas stream is. In addition, through the flow channel of the gas stream after flowing through the heating unit with low flow losses in the laundry drum of Tumble drier, whereby the generated heat energy of the laundry is supplied effectively and energy-saving. To get a good heat transfer between To achieve the heating element and the gas stream, the heating element in the flow channel be arranged.

Um die Wärmeenergie des Heizelementes nicht in die Umgebung abzuleiten, kann der Wärmeschutzkörper aus einem wärmeisolierenden und temperaturbeständigen Material, vorzugsweise einem Kunststoff, hergestellt sein.In order not to dissipate the heat energy of the heating element in the environment, the Heat shield made of a heat-insulating and temperature-resistant material, preferably a plastic.

Der Wärmeschutzkörper kann auch aus einem Metall hergestellt werden. Der metallische Wärmeschutzkörper hat den Vorteil, dass er einfach und kostengünstig, beispielsweise durch Tiefziehen, hergestellt werden kann. Außerdem kann der Wärmeschutzkörper aus einem korrosionsbeständigem Material, z. B. einem CrNi-Stahl, hergestellt sein, um eine Korrosion des Wärmeschutzkörpers, der in dem Wäschetrockner beispielsweise Feuchtigkeit ausgesetzt ist, zu verhindern.The heat shield can also be made of a metal. The metallic one Heat protection body has the advantage that it is simple and inexpensive, for example by deep drawing, can be produced. In addition, the heat protection body made of a corrosion-resistant material, eg. B. a CrNi steel, be prepared for a corrosion of the heat protection body, for example in the tumble dryer Moisture is exposed to prevent.

Ferner kann die Abdeckung weitere Befestigungsmittel umfassen, an denen der Wärmeschutzkörper lösbar angebracht ist. Dies hat den Vorteil, dass der Wärmeschutzkörper leicht und ohne zusätzliche Befestigungsmittel an der Abdeckung montiert werden kann und sich somit die Montage- und Herstellkosten der Heizeinheit reduzieren.Furthermore, the cover may comprise further fastening means, on which the heat protection body is releasably attached. This has the advantage that the heat protection body easily and without additional fasteners to be mounted on the cover can and thus reduce the assembly and production of the heating unit.

In einer weiteren vorteilhaften Ausgestaltung kann in der Abdeckung wenigstens ein Kontaktelement integriert sein, mit dem die Heizeinheit an einem maschinenseitigen Gegenkontakt elektrisch anschließbar ist. Dies hat den Vorteil, dass die Heizeinheit vor der Anbringung an den Wäschetrockner einfach an einer Spannungsquelle anschließbar ist. Ferner kann das Kontaktelement als ein Teil einer Steckerverbindung ausgestaltet sein, wodurch ein schneller und einfacher Anschluss des Kontaktelements gewährleistet ist. Der Anschluss der Heizeinheit kann auch durch ein einziges, möglicherweise genormtes Steckerelement geschehen, wodurch sich die erforderliche Anschlusszeit weiter reduziert. Hierbei werden die unterschiedlichen elektrischen Leitungen des wenigstens einen Heizelements und des wenigstens einen Messfühlers in dem einen Steckerelement angeschlossen. Das Steckerelement wird in ein entsprechendes Gegensteckerelement des Wäschetrockners eingesteckt.In a further advantageous embodiment, at least one can be provided in the cover Contact element integrated with the heating unit on a machine side Counter contact is electrically connected. This has the advantage of having the heating unit in front the attachment to the tumble dryer easily connected to a voltage source is. Furthermore, the contact element can be configured as part of a plug connection be, thereby ensuring a quick and easy connection of the contact element is. The connection of the heating unit can also by a single, possibly standardized Plug element happen, thereby further the required connection time reduced. Here are the different electrical lines of at least a heating element and the at least one sensor in the one plug element connected. The plug element is in a corresponding mating connector element of the clothes dryer inserted.

Ferner kann das Kontaktelement in einer weiteren vorteilhaften Ausgestaltung in der Abdeckung integriert sein, um die Anbringung der Abdeckung an dem Wäschetrockner weiter zu vereinfachen.Furthermore, the contact element in a further advantageous embodiment in the Cover be integrated to attach the cover to the tumble dryer further simplify.

Um die Abdeckung kostengünstig und mit einer hohen Formgenauigkeit herstellen zu können, kann die Abdeckung als behälterförmiges Gehäuse ausgeformt sein, das als ein Spritzgussteil ausgestaltet ist. Spritzgussteile können mit einer hohen Maßgenauigkeit hergestellt werden und sind, wenn sie in hohen Stückzahlen produziert werden, sehr kostengünstig. Durch die behälterförmige Ausgestaltung des Gehäuses, z.B. mit einer hohen Umrandung, ist die Abdeckung trotz der angeordneten Einzelteile der Heizeinheit an einer planen Wand anbringbar und bildet dabei den von dem Gasstoffstrom durchströmbaren Kanal aus.In order to produce the cover inexpensively and with a high dimensional accuracy can, the cover may be formed as a container-shaped housing, which an injection molded part is designed. Injection molded parts can with a high dimensional accuracy are produced and are very, if they are produced in large quantities inexpensive. Due to the container-shaped design of the housing, e.g. with a high edging, the cover is in spite of the heating unit's arranged items attachable to a flat wall and thereby forms the flow through the gas stream Channel off.

In einer vorteilhaften Weiterbildung kann das behälterförmige Gehäuse als ein Kunststoffteil ausgestaltet sein, das abschnittsweise mit wenigsten einem Schutzbereich aus einem anderen Material, vorzugsweise einem Metallblech, versehen ist. Durch den Verbund von Kunststoff mit anderen Materialien werden beispielsweise die Stabilität und die Temperaturbeständigkeit des Gehäuses verbessert. Hierbei können die anderen Materialien sowohl auf das Kunststoffteil als auch schichtartig im Kunststoffteil angeordnet sein. Ferner kann der wenigstens eine Schutzbereich in einem Bereich angeordnet sein, in dem im Betrieb eine hohe Temperatur auftritt. Hierdurch wird die Wärmeisolierung und Temperaturbeständigkeit des Gehäuses verbessert.In an advantageous development, the container-shaped housing as a plastic part be configured, the sections with at least one protection area another material, preferably a metal sheet is provided. Through the composite of plastic with other materials, for example, the stability and the Temperature resistance of the housing improved. Here are the other materials arranged on the plastic part as well as a layer in the plastic part his. Furthermore, the at least one protection area can be arranged in a region, in which a high temperature occurs during operation. This will heat insulation and temperature resistance of the housing improved.

In einer weiteren vorteilhaften Ausgestaltung kann die Abdeckung von außen an den Wäschetrockner anbringbar sein. Dies hat den Vorteil, dass die so ausgestaltete Abdeckung besonders leicht an dem Wäschetrockner zu montieren ist.In a further advantageous embodiment, the cover from the outside to the Clothes dryer be attached. This has the advantage that the thus designed cover is particularly easy to mount on the dryer.

Die Erfindung betrifft neben der oben beschriebenen Abdeckung und deren Ausgestaltungen auch einen Wäschetrockner zum Trocknen feuchter Wäsche mit einem Gasstoffstrom, wobei der Wäschetrockner mit Wänden, einer Luftzufuhr und mit einem von dem Gasstoffstrom durchströmbaren Kanal ausgeführt ist. Um die Montage des Wäschetrockners zu erleichtern, umfasst der Wäschetrockner eine Abdeckung nach einer der oben genannten Ausführungsformen und wird der Kanal wenigstens abschnittsweise von der Abdeckung gebildet.The invention relates in addition to the cover described above and their embodiments also a clothes dryer for drying wet laundry with a gas stream, the clothes dryer with walls, an air supply and with one of The gas flow through the flow channel is executed. To the assembly of the tumble dryer To facilitate, the dryer comprises a cover after a the above embodiments and the channel is at least partially formed by the cover.

Die Erfindung betrifft neben den oben erläuterten Vorrichtungen und ihren weiteren Ausgestaltungen auch ein Verfahren zum Zusammenbau eines Wäschetrockners durch den im Betrieb ein Gasstoffstrom zum Trocknen feuchter Wäsche erwärmbar ist. Um die nötige Montagezeit des Wäschetrockners zu verkürzen, ist erfindungsgemäß vorgesehen, dass eine Abdeckung, zu einer Heizeinheit durch Anbringen wenigstens eines Heizelements, vormontiert wird, ein Kanal ausgebildet wird, die Abdeckung von außen an einer Wand des Wäschetrockners angebracht wird und der Kanal mit einer Luftzufuhr des Wäschetrockners verbunden wird.The invention relates in addition to the above-mentioned devices and their further Embodiments also a method for assembling a clothes dryer by in the operation of a gas stream for drying damp laundry is heated. To the to shorten the necessary installation time of the tumble dryer is provided according to the invention, that a cover, to a heating unit by attaching at least one Heating element is pre-assembled, a channel is formed, the cover from the outside attached to a wall of the tumble dryer and the duct with an air supply the tumble dryer is connected.

In einer vorteilhaften Weiterbildung kann die Abdeckung durch lösbares oder unlösbares Verrasten an der Wand angebracht werden, um die Montage des Wäschetrockners zu vereinfachen. Aus gleichem Grund kann ein Kontakt zur Stromversorgung des Heizelements beim Anbringen der Abdeckung an der Wand gleichzeitig geschlossen werden. Ferner kann der Kanal während des Anbringens der Abdeckung an der Wand des Wäschetrockners gleichzeitig im Wesentlichen gasdicht abgedichtet werden.In an advantageous development, the cover by detachable or insoluble Latching on the wall can be attached to the assembly of the tumble dryer too simplify. For the same reason, a contact to the power supply of the heating element When attaching the cover to the wall to be closed simultaneously. Further, the channel may be attached to the wall of the clothes dryer during the attachment of the cover sealed at the same time substantially gas-tight.

Im Folgenden wird die Erfindung beispielhaft mit Bezug auf die beigefügten Zeichnungen erläutert. Die unterschiedlichen Merkmale können dabei unabhängig voneinander kombiniert werden, wie dies oben bei den einzelnen vorteilhaften Ausgestaltungen bereits dargelegt wurden.In the following, the invention will be described by way of example with reference to the accompanying drawings explained. The different features can be independent of each other be combined, as above in the individual advantageous embodiments already were set out.

Es zeigen:

Fig. 1
eine Perspektivansicht einer beispielhaften Ausführungsform der erfindungsgemäßen Abdeckung schematisch von oben;
Fig. 2
eine perspektivische Explosionsdarstellung der erfindungsgemäßen Abdeckung aus Fig. 1 schematisch von unten;
Fig. 3
eine perspektivische Explosionsdarstellung der erfindungsgemäßen Abdeckung aus Fig. 1 schematisch von oben;
Fig. 4
eine Ausführungsform der erfindungsgemäßen Abdeckung angebracht an der Rückwand eines Wäschetrockners;
Fig. 5
eine Detailansicht der erfindungsgemäßen Abdeckung aus Fig. 4 vor ihrer Anbringung an dem Wäschetrockner;
Fig. 6
eine Detailansicht der erfindungsgemäßen Abdeckung aus Fig. 4 nach ihrer Anbringung an dem Wäschetrockner;
Fig. 7
eine weitere Ausführungsform der erfindungsgemäßen Abdeckung angebracht an der Rückwand eines Wäschetrockners;
Fig. 8
eine Detailansicht der erfindungsgemäßen Abdeckung aus Fig. 7 vor ihrer Anbringung an dem Wäschetrockner;
Fig. 9
eine Detailansicht der erfindungsgemäßen Abdeckung aus Fig. 7 nach ihrer Anbringung an dem Wäschetrockner;
Show it:
Fig. 1
a perspective view of an exemplary embodiment of the cover according to the invention schematically from above;
Fig. 2
an exploded perspective view of the cover according to the invention of Figure 1 schematically from below.
Fig. 3
an exploded perspective view of the cover according to the invention of Figure 1 schematically from above.
Fig. 4
an embodiment of the cover according to the invention attached to the rear wall of a tumble dryer;
Fig. 5
a detailed view of the cover according to the invention of Figure 4 before being attached to the tumble dryer.
Fig. 6
a detailed view of the cover of the invention of Figure 4 after its attachment to the dryer.
Fig. 7
a further embodiment of the cover according to the invention mounted on the rear wall of a tumble dryer;
Fig. 8
a detail view of the cover of the invention of Figure 7 prior to its attachment to the dryer.
Fig. 9
a detailed view of the cover of the invention of Figure 7 after its attachment to the dryer.

Zunächst wird der allgemeine Aufbau der erfindungsgemäßen Abdeckung 1 mit Bezug auf die Fig. 1 bis 3 und die darin dargestellte beispielhafte Ausführungsform beschrieben.First, the general structure of the cover 1 according to the invention with reference to FIGS. 1 to 3 and the exemplary embodiment illustrated therein.

Die als Heizeinheit ausgestaltete Abdeckung 1 umfasst ein Gehäuse 2, einen Wärmeschutzkörper 3 und mehrere Heizelemente 4. Die in den Fig. 1 bis 3 beispielhaft dargestellte Ausführungsform der erfindungsgemäßen Abdeckung enthält vier nebeneinander und übereinander angeordnete Heizelemente 4. Die Heizelemente 4 werden durch zwei seitlich angeordnete Trägerplatten 5 als eine einstückige Moduleinheit zusammengehalten. Die Heizelemente 4 werden relativ zueinander so positioniert, dass ein vorbeiströmender Gasstoffstrom optimal erwärmt werden kann. The designed as a heating unit cover 1 comprises a housing 2, a heat protection body 3 and a plurality of heating elements 4. The example shown in FIGS. 1 to 3 Embodiment of the cover according to the invention contains four side by side and superimposed heating elements 4. The heating elements 4 are by two laterally arranged carrier plates 5 held together as a one-piece modular unit. The heating elements 4 are positioned relative to each other so that a flowing past Gas stream can be optimally heated.

Die Heizelemente 4 sind innerhalb des Wärmeschutzkörpers 3 angeordnet, der die Heizelemente von der Umgebung thermisch isoliert und gleichzeitig einen Strömungskanal ausbildet, um einen Gasstoffstrom, vorzugsweise einen Luftstrom, möglichst gut an den Heizelementen 4 vorbeizuleiten. Der Wärmeschutzkörper 3 weist hierzu eine Einlassöffnung 6 und eine Auslassöffnung 7 auf. Der zu erwärmende Luftstrom strömt an der Einlassöffnung in den Wärmeschutzkörper 3 hinein und wird durch die Form des Wärmeschutzkörpers 3 durch die Heizelemente 4 hindurch bzw. an diesen entlang geleitet, wodurch sich der Luftstrom erwärmt. Der aufgewärmte Luftstrom strömt an der Auslassöffnung 7 aus dem Wärmeschutzkörper 3 hinaus.The heating elements 4 are arranged inside the heat protection body 3, which is the Heating elements of the environment thermally insulated while a flow channel forms a gas stream, preferably an air stream, as well as possible pass past the heating elements 4. The heat protection body 3 has for this purpose Inlet opening 6 and an outlet opening 7. The air flow to be heated flows at the inlet opening into the heat shield 3 and is characterized by the shape of the Heat protection body 3 through the heating elements 4 therethrough or passed along, whereby the air flow heats up. The heated air stream flows at the Outlet opening 7 from the heat shield 3 addition.

Um einen guten Wärmeschutz zu erreichen, ist der Wärmeschutzkörper 3 aus einem korrosionsbeständigen Metallblech, beispielsweise einem CrNi-Stahlblech, hergestellt. Die wärmeabschirmende Wirkung des Wärmeschutzkörpers 3 ist besonders wichtig, weil im Innern des Wärmeschutzkörpers im Bereich der Heizelemente 4 Temperaturen bis zu 600°C auftreten können. Hierbei darf die Oberflächentemperatur an der Außenseite einen zulässigen Wert, beispielsweise nach einer VDE-Richtlinie 85°C, nicht überschreiten. Erschwerend wirkt bei der Wärmeisolierung, dass der zur Verfügung stehende Bauraum äußerst begrenzt ist. Um die Wärmeisolierung zu verstärken, kann der Wärmeschutzkörper mit einer reflektierenden Oberfläche ausgeführt sein. Der Wärmeschutzkörper 9 weist zudem eine geringe Wärmeleitfähigkeit auf, so dass die extrem hohe Temperatur aus dem Bereich der Heizelemente 4 nicht an die äußere Oberfläche der Abdeckung 1 übertragen werden kann. Somit kann die äußere Oberfläche der Abdeckung 1 von einem Bediener ohne die Gefahr einer Verbrennung berührt werden.In order to achieve a good heat protection, the heat shield 3 is made of a corrosion-resistant metal sheet, for example, a CrNi steel sheet produced. The heat-shielding effect of the heat shield 3 is particularly important because in the interior of the heat protection body in the region of the heating elements 4 temperatures up to 600 ° C can occur. Here, the surface temperature on the outside may do not exceed a permissible value, for example according to a VDE guideline 85 ° C. To make matters worse in the thermal insulation that the available Space is extremely limited. To strengthen the thermal insulation, the Heat protection body be designed with a reflective surface. The heat protection body 9 also has a low thermal conductivity, so that the extreme high temperature from the area of the heating elements 4 not to the outer surface the cover 1 can be transmitted. Thus, the outer surface of the cover 1 can be touched by an operator without the risk of burning.

Damit die Abdeckung 1 mit dem darin vormontierten Heizelement 4 leicht vormontiert werden kann, ist der Wärmeschutzkörper 3 beispielsweise zweiteilig ausgeführt. Er besteht aus einem unteren Teil 9 und einem oberen Teil 10. Der untere Teil 9 ist in der beispielhaften Ausführungsform in Fig. 1 bis 3 ein ausgestanztes Blechteil an dem durch Biegen der Leitkörper 8 ausgeformt ist. Der obere Teil 10 des Wärmeschutzkörpers 3 ist bei der Ausgestaltung in Fig. 1 bis 3 durch Tiefziehen hergestellt worden. In dem oberen Teil 10 des Wärmeschutzkörpers 3 ist neben der Einlassöffnung 6 und der Auslassöffnung 7 jeweils mindestens eine Aussparung 11 ausgeformt, in der mindestens ein Temperatursensor 12 angebracht ist. Thus, the cover 1 with the pre-assembled heating element 4 preassembled easily can be, the heat protection body 3, for example, made in two parts. He insists from a lower part 9 and an upper part 10. The lower part 9 is in the exemplary embodiment in Fig. 1 to 3 a punched sheet metal part at the through Bending the baffle 8 is formed. The upper part 10 of the heat shield 3 is in the embodiment in Fig. 1 to 3 produced by deep drawing. In the upper one Part 10 of the heat shield 3 is adjacent to the inlet opening 6 and the outlet opening 7 in each case at least one recess 11 formed in the at least one temperature sensor 12 is attached.

Durch die Temperatursensoren 12 kann die Erwärmung des Luftstroms innerhalb der Abdeckung 1 gemessen und die Heizleistung der Heizelemente 4 geregelt werden. Mit der gemessenen Temperatur bzw. Temperaturdifferenz des Luftstroms kann insbesondere ein Regelkreis aufgebaut werden, mit dem die Heizelemente 4 angesteuert werden und die Temperatur des Luftstroms geregelt wird. Zur Verbesserung des Regelkreises können auch mehr als zwei Temperatursensoren eingesetzt werden, um die Temperatur an verschiedenen Stellen des Luftstroms zu ermitteln. So kann beispielsweise die Temperatur des Luftstroms vor und hinter dem Heizelement 4 gemessen werden. Außerdem kann ein weiterer Temperatursensor in der Nähe der Heizelemente 4 als ein Schutzthermostat angeordnet sein, um einen zu starken Temperaturanstieg der Heizelemente 4 zu erkennen und damit ein Überhitzen zu verhindern. Der Wärmeschutzkörper 3 mit den Heizelementen 4 ist an dem Gehäuse 2 angebracht.By the temperature sensors 12, the heating of the air flow within the Cover 1 measured and the heating power of the heating elements 4 are regulated. With the measured temperature or temperature difference of the air flow can in particular a control circuit are constructed, with which the heating elements 4 are controlled and the temperature of the air flow is regulated. To improve the control loop Also, more than two temperature sensors can be used to control the temperature to determine at various points of the air flow. For example, the temperature the air flow in front of and behind the heating element 4 are measured. also For example, another temperature sensor may be near the heating elements 4 as a protective thermostat be arranged to prevent excessive temperature rise of the heating elements 4 to recognize and thus prevent overheating. The heat protection body 3 with the heating elements 4 is attached to the housing 2.

Das Gehäuse 2 ist mit Befestigungsmitteln 13 zum lösbaren Anbringen der Abdeckung 1 an einem Wäschetrockner versehen. Die Befestigungsmittel 13 werden im Folgenden noch genauer beschrieben. Die Abdeckung 1 umfasst des Weiteren eine Dichtlippe 14, durch die die Abdeckung 1 im Wesentlichen gasdicht an dem Wäschetrockner anbringbar ist. Hierdurch wird verhindert, dass ein Teil des erwärmten Luftstroms nach außen abgegeben wird. Das Gehäuse 2 der in den Fig. 1 bis 3 dargestellten Ausführungsform ist aus einem wärmeisolierenden Kunststoff hergestellt. Dies ist vorteilhaft, damit die hohe Temperatur im Bereich der Heizelemente 4 nicht an die äußere Oberfläche der Abdeckung 1 aus den oben genannten Gründen übertragen wird. Des Weiteren ist das Gehäuse 2 aus einem elektrisch isolierenden Kunststoff hergestellt, um die Heizelemente 4 gegenüber den restlichen Teilen des Wäschetrockners und auch nach außen elektrisch zu isolieren. Des Weiteren wird durch die Ausführung des Gehäuses 2 aus einem elektrisch isolierenden Material einem Verbreiten von Kriechströmen entgegengewirkt.The housing 2 is provided with fastening means 13 for releasably attaching the cover 1 provided on a tumble dryer. The fastening means 13 are hereafter described in more detail. The cover 1 further comprises a sealing lip 14, by the cover 1 substantially gas-tight attachable to the tumble dryer is. This will prevent some of the heated airflow from going out is delivered. The housing 2 of the embodiment shown in FIGS. 1 to 3 is made of a heat-insulating plastic. This is beneficial to the high temperature in the area of the heating elements 4 not to the outer surface of the Cover 1 is transmitted for the reasons mentioned above. Furthermore, that is Housing 2 made of an electrically insulating plastic to the heating elements 4 opposite the remaining parts of the tumble dryer and also to the outside electric to isolate. Furthermore, by the execution of the housing 2 from a electrically insulating material counteracted spreading creepage currents.

An den Stellen hoher Temperatur kann bereichsweise ein temperaturbeständiges Material z. B. ein Metallblechteil am Gehäuse 2 angebracht werden, so dass in diesem Schutzbereich das Gehäuse 2 geschützt ist.At high temperature points, a temperature-resistant material can be used in certain areas z. B. a sheet metal part are attached to the housing 2, so that in this Protected area the housing 2 is protected.

Wie in den Fig. 1 bis 3 dargestellt ist das Gehäuse 2 behälterförmig ausgeführt und weist eine umlaufende Behälterwand 2a auf, die einen Innenraum 2b umschließt. Hierdurch ist die erfindungsgemäße Abdeckung 1, in welcher der Wärmeschutzkörper 3 mit den Heizelementen 4 im Innenraum 2b des Gehäuses 2 angebracht sind und nicht über die Behälterwand 2a hinausstehen, an eine Wand 17' eines Wäschetrockners 17 anbringbar. Wie dargestellt ist, kann die Wand 17' plan sein.As shown in FIGS. 1 to 3, the housing 2 is designed container-shaped and has a circumferential container wall 2a, which encloses an inner space 2b. hereby is the cover 1 according to the invention, in which the heat protection body 3 with the heating elements 4 are mounted in the interior 2b of the housing 2 and not over the container wall 2a protrude, to a wall 17 'of a clothes dryer 17th mountable. As shown, the wall 17 'may be flat.

Das Gehäuse 2 der in den Fig. 1 bis 3 dargestellten Ausführungsform der erfindungsgemäßen Abdeckung 1 ist als ein Spritzgussteil ausgeführt. Die Herstellung des Gehäuses im Spritzgießverfahren hat den Vorteil, dass eine große Stückzahl kostengünstig bei hoher Formgenauigkeit hergestellt werden kann.The housing 2 of the embodiment of the invention shown in FIGS. 1 to 3 Cover 1 is designed as an injection molded part. The production of the housing In the injection molding process has the advantage that a large number of inexpensive in high dimensional accuracy can be produced.

Die Abdeckung 1 umfasst weiterhin wenigstens ein Kontaktelement 15, durch das die Abdeckung 1 mit ihren Heizelementen 4 und Temperatursensoren 12 elektrisch anschließbar ist. Das in den Fig. 1 bis 3 dargestellte Kontaktelement 15 ist beispielsweise als standardisierter Stecker ausgeführt und in dem Gehäuse 2 integriert. Ein entsprechender Gegenstecker befindet sich an dem Wäschetrockner, so dass sich in der Montageposition der Abdeckung 1 eine Steckverbindung von selbst herstellt. Über das Kontaktelement 15 sind sowohl die Heizelemente 4 als auch die Temperatursensoren 12 elektrisch anschließbar. Dies hat den Vorteil, dass nur ein Kontaktelement zum elektrischen Anschließen sämtlicher Teile der Abdeckung 1 nötig ist.The cover 1 further comprises at least one contact element 15, through which the Cover 1 with its heating elements 4 and 12 temperature sensors electrically connected is. The contact element 15 shown in FIGS. 1 to 3 is for example designed as a standardized plug and integrated in the housing 2. An appropriate one Mating connector is attached to the tumble dryer, allowing itself in the mounting position the cover 1 makes a plug connection by itself. About the contact element 15 are both the heating elements 4 and the temperature sensors 12th electrically connectable. This has the advantage that only one contact element for electrical Connecting all parts of the cover 1 is necessary.

Das Gehäuse 2 hat weitere Befestigungsmittel 16, an denen der Wärmeschutzkörper 3 lösbar angebracht ist. Bei der Montage der Abdeckung 1 kann der untere Teil 9 des Wärmeschutzkörpers 3 in die als Rastmittel ausgeführten weiteren Befestigungsmittel 16 eingerastet werden. Danach wird die vormontierte Moduleinheit aus Heizelementen 4 und Trägerplatten 5 auf den unteren Teil 9 aufgesetzt. Abschließend wird der obere Teil 10 des Wärmeschutzkörpers 3 aufgesetzt und ebenfalls an den weiteren Befestigungsmitteln 16 eingerastet. Der Wärmeschutzkörper 3 kann Befestigungsmittel zur Fixierung der Heizelemente 4 innerhalb des Wärmeschutzkörpers 3 enthalten. In der in den Fig. 1 bis 3 dargestellten Ausführungsform sind die weiteren Befestigungsmittel 16 gleichzeitig in Form von Rippen zur Verstärkung der Stabilität des Gehäuses 2 ausgestaltet.The housing 2 has further fastening means 16, on which the heat protection body. 3 is releasably attached. When mounting the cover 1, the lower part 9 of the Heat protection body 3 in the locking means designed as further fastening means 16 are engaged. Thereafter, the preassembled module unit of heating elements. 4 and carrier plates 5 placed on the lower part 9. Finally, the upper part 10 of the heat shield 3 and also attached to the other fasteners 16 locked. The heat protection body 3 can fixing means for fixing the heating elements 4 contained within the heat shield 3. In the in Figs. 1 to 3 illustrated embodiment, the other fastening means 16 are simultaneously designed in the form of ribs to enhance the stability of the housing 2.

Fig. 4 zeigt die Rückwand eines Wäschetrockners 17 mit der angebauten erfindungsgemäßen Abdeckung 1 aus den Fig. 1 bis 3. In Fig. 5 und Fig. 8 ist das Detail A aus Fig. 4 perspektivisch dargestellt. Hierbei ist die Abdeckung 1 noch nicht montiert und von dem Wäschetrockner 17 beabstandet. In dem Wäschetrockner 17 ist mindestens ein Loch 18 zur Aufnahme des Befestigungsmittels 13 der Abdeckung 1 ausgeführt. Fig. 6 und Fig. 9 zeigen das Detail A aus Fig. 4 mit montierter Abdeckung 1. Das keilartig als Clips oder Raste ausgeführte Befestigungsmittel 13 ist in Fig. 5 in dem Loch 18, das als eine Gegenraste ausgeführt ist, eingerastet. Die Dichtlippe 14 ist in montiertem Zustand zusammengedrückt und dichtet die Abdeckung 1 im Wesentlichen luftdicht bzw. gasdicht ab. Außerdem erzeugt die zusammengedrückte Dichtlippe 14 eine Spannkraft, die die Abdeckung 1 von dem Wäschetrockner 17 wegdrückt, wodurch im Betrieb des Wäschetrockners ein Klappern des Befestigungsmittels 13 in dem Loch 18 verhindert wird. Die Abdeckung 1 ist dadurch vibrationsfest an dem Wäschtrockner 17 angebracht.Fig. 4 shows the rear wall of a clothes dryer 17 with the attached invention Cover 1 of FIGS. 1 to 3. In Fig. 5 and Fig. 8, the detail A of FIG. 4 shown in perspective. Here, the cover 1 is not yet mounted and from the tumble dryer 17 spaced. In the tumble dryer 17 is at least one Hole 18 for receiving the fastener 13 of the cover 1 executed. Fig. 6 and Fig. 9 show the detail A of FIG. 4 with mounted cover 1. The wedge-like than Clips or detent running fasteners 13 is shown in Fig. 5 in the hole 18, as a counter-detent is executed, engaged. The sealing lip 14 is in the assembled state squeezes and seals the cover 1 is substantially airtight or gas-tight from. In addition, the compressed sealing lip 14 generates a clamping force, the the cover 1 is pushed away from the tumble dryer 17, whereby during operation of the tumble dryer rattling of the fastener 13 in the hole 18 is prevented. The cover 1 is thereby mounted vibration-proof on the washer 17.

Fig. 7 zeigt eine weitere Ausführungsform der erfindungsgemäßen Abdeckung 1 montiert an einem Wäschetrockner 17. Fig. 8 zeigt ein Detail B aus Fig. 7, wobei die Abdeckung 1 vor der Montage mit dem Wäschetrockner 17 dargestellt ist. Im Vergleich zu der Ausführungsform der Abdeckung aus den Fig. 4 bis 6 unterscheidet sich die Ausführungsform der Abdeckung 1 der Fig. 7 bis 9 durch anders ausgestaltete Befestigungsmittel 13 und ein entsprechend anderes Loch 18. Das in Fig. 8 dargestellte Befestigungsmittel 13 ist dübelförmig ausgeführt. Das Loch 18 ist kreisförmig und als Gegenraste für das Befestigungsmittel 13 ausgestaltet. Fig. 9 zeigt die Ausführungsform der erfindungsgemäßen Abdeckung 1 aus den Fig. 7 und 8 in montiertem Zustand. Ähnlich wie bei der Ausführungsform in den Fig. 4 bis 6 ist die Dichtlippe 14 in montiertem Zustand zusammengedrückt mit den oben bereits beschriebenen Eigenschaften.Fig. 7 shows a further embodiment of the cover 1 according to the invention mounted on a clothes dryer 17. Fig. 8 shows a detail B of Fig. 7, wherein the cover 1 is shown prior to assembly with the tumble dryer 17. Compared to the Embodiment of the cover of FIGS. 4 to 6, the embodiment differs the cover 1 of Fig. 7 to 9 by differently configured fastening means 13 and a correspondingly different hole 18. The fastening means shown in Fig. 8 13 is designed dowel-shaped. The hole 18 is circular and as a counter-catch designed for the fastening means 13. Fig. 9 shows the embodiment of cover 1 according to the invention from FIGS. 7 and 8 in the assembled state. Similar As in the embodiment in Figs. 4 to 6, the sealing lip 14 is in the assembled state compressed with the properties already described above.

Bei dem in Fig. 5 und 7 beispielhaft dargestellten erfindungsgemäßen Wäschetrocknern 17 ist die Abdeckung 1 von außen an einer Wand 17' angebracht. Im Innern des Wäschetrockners 17 befindet sich eine Luftzufuhr, z.B. mit einem Ventilator, zum Erzeugen eines Gasstoffstroms, mit dem die feuchte Wäsche getrocknet wird. Die Wände 17' sind beispielsweise an einem Grundgestell angebracht. Die Abdeckung 1 bildet mit der Wand 17' einen im Betrieb des Wäschetrockners 17 von dem Gasstoffstrom durchströmten Kanal aus, durch den der Gasstoffstrom in Richtung der zu trocknenden Wäsche leitbar ist.In the laundry driers according to the invention shown by way of example in FIGS. 5 and 7 17, the cover 1 is attached to the outside of a wall 17 '. Inside the tumble dryer 17 there is an air supply, e.g. with a fan, for generating a gas stream, with which the wet laundry is dried. The walls 17 'are For example, attached to a base frame. The cover 1 forms with the wall 17 'in the operation of the clothes dryer 17 flowed through by the gas stream Channel out, through which the gas stream in the direction of the laundry to be dried leitbarer is.

Die Fig. 1 - 3 zeigen eine mögliche Ausführungsform der erfindungsgemäßen Abdeckung 1. Die Abdeckung 1 kann alternativ mit einer Flanschfläche anstelle der Dichtlippe 14 ausgeführt sein. Diese Flanschfläche kann sowohl der Befestigung der Abdeckung 1 an einem Wäschetrockner als auch als Dichtfläche gegenüber dem Wäschetrockner dienen. Zur Befestigung der Abdeckung 1 können z. B. Bohrungen in der Flanschfläche ausgeführt sein. In den Bohrungen können z. B. Schrauben oder Nieten zur Befestigung der Abdeckung 1 an dem Wäschetrockner angeordnet sein. Zum Abdichten dieser Ausführungsform der erfindungsgemäßen Abdeckung wird auf die Flanschfläche bei der Montage der Abdeckung 1 an dem Wäschetrockner ein Dichtmittel auf die Flanschfläche aufgetragen. Bei der Verwendung eines klebenden Dichtmittels kann die Abdeckung 1 durch das Dichtmittel an dem Wäschetrockner angebracht und gleichzeitig abgedichtet werden.FIGS. 1-3 show a possible embodiment of the cover according to the invention 1. The cover 1 may alternatively have a flange surface instead of the sealing lip 14 executed. This flange can both the attachment of the cover. 1 on a tumble dryer as well as a sealing surface opposite the tumble dryer serve. To attach the cover 1 z. B. holes in the flange be executed. In the holes can z. As screws or rivets for attachment the cover 1 may be arranged on the tumble dryer. For sealing this embodiment the cover of the invention is applied to the flange in the Mounting the cover 1 on the dryer a sealant on the flange applied. When using an adhesive sealant, the cover 1 attached by the sealant to the dryer and sealed at the same time become.

Die Abdichtung der erfindungsgemäßen Abdeckung gegenüber dem Wäschetrockner kann alternativ auch als Labyrinthdichtung ausgeführt sein.The sealing of the cover according to the invention relative to the tumble dryer may alternatively be designed as a labyrinth seal.

Claims (24)

Abdeckung (1) für einen Wäschetrockner (17), durch den im Betrieb ein Gasstoffstrom zum Trocknen feuchter Wäsche erwärmbar ist, wobei die Abdeckung (1) als wenigstens ein Abschnitt einer Außenwand, insbesondere einer Rückwand, des Wäschetrockners (17) ausgestaltet und von der Abdeckung (1) ein von dem Gasstoffstrom durchströmbarer Kanal wenigstens abschnittsweise ausgebildet ist, dadurch gekennzeichnet, dass die Abdeckung (1) als Heizeinheit ausgestaltet ist, in der wenigstens ein Heizelement (4) von dem Gasstoffstrom im Betrieb des Wäschetrockners (17) umströmbar integriert ist.Cover (1) for a tumble dryer (17) through which a gaseous stream for drying damp laundry can be heated during operation, wherein the cover (1) as at least a portion of an outer wall, in particular a rear wall, of the clothes dryer (17) and designed by the Cover (1) at least partially formed by the gas flow through a flow channel, characterized in that the cover (1) is designed as a heating unit, in which at least one heating element (4) of the gas stream during operation of the tumble dryer (17) is integrated flow around , Abdeckung (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Abdeckung (1) Befestigungsmittel (13) umfasst, mit denen die Abdeckung (1) von außen an dem Wäschetrockner (17) anbringbar ist.Cover (1) according to claim 1, characterized in that the cover (1) fastening means (13), with which the cover (1) from the outside to the tumble dryer (17) is attachable. Abdeckung (1) nach Anspruch 2, dadurch gekennzeichnet, dass die Befestigungsmittel (13) als Rasten ausgestaltet sind, mit denen die Abdeckung (1) an dem Wäschetrockner (17) verrastbar ist.Cover (1) according to claim 2, characterized in that the fastening means (13) are designed as detents with which the cover (1) on the tumble dryer (17) can be latched. Abdeckung (1) nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Befestigungsmittel (13) mehrfach lösbar ausgestaltet sind.Cover (1) according to claim 2 or 3, characterized in that the fastening means (13) are designed to be detachable multiple times. Abdeckung (1) nach einem der oben genannten Ansprüche, dadurch gekennzeichnet, dass die Abdeckung (1) eine Dichtlippe (14) umfasst, durch die die Abdeckung (1) im wesentlichen gasdicht an dem Wäschetrockner (17) anbringbar ist.Cover (1) according to one of the above claims, characterized in that the cover (1) comprises a sealing lip (14), by which the cover (1) is substantially gas-tight to the tumble dryer (17) attachable. Abdeckung (1) nach einem der oben genannten Ansprüche, dadurch gekennzeichnet, dass die Abdeckung (1) eine Labyrinthdichtung umfasst, durch die die Abdeckung (1) im wesentlichen gasdicht an dem Wäschetrockner (17) anbringbar ist.Cover (1) according to one of the above claims, characterized in that the cover (1) comprises a labyrinth seal, by which the cover (1) is substantially gas-tight to the tumble dryer (17) attachable. Abdeckung (1) nach einem der oben genannten Ansprüche, dadurch gekennzeichnet, dass die Abdeckung (1) aus einem wärmeisolierenden Material hergestellt ist. Cover (1) according to one of the above claims, characterized in that the cover (1) is made of a heat-insulating material. Abdeckung (1) nach einem der oben genannten Ansprüche, dadurch gekennzeichnet, dass die Abdeckung (1) aus einem temperaturbeständigen Material hergestellt ist.Cover (1) according to one of the above claims, characterized in that the cover (1) is made of a temperature-resistant material. Abdeckung (1) nach einem der oben genannten Ansprüche, dadurch gekennzeichnet, dass die Abdeckung (1) aus einem elektrisch isolierenden Material hergestellt ist.Cover (1) according to one of the above claims, characterized in that the cover (1) is made of an electrically insulating material. Abdeckung (1) nach einem der oben genannten Ansprüche, dadurch gekennzeichnet, dass die als Heizeinheit ausgestaltete Abdeckung (1) wenigstens einen Temperatursensor (12) umfasst, mit dem die Temperatur des Gasstoffstroms messbar ist.Cover (1) according to one of the above claims, characterized in that the heating element designed as a cover (1) comprises at least one temperature sensor (12) with which the temperature of the gas stream is measurable. Abdeckung (1) nach einem der oben genannten Ansprüche, dadurch gekennzeichnet, dass die Heizeinheit einen Wärmeschutzkörper (3) umfasst, der das wenigstens eine Heizelement (4) wenigstens teilweise umgibt.Cover (1) according to one of the above claims, characterized in that the heating unit comprises a heat protection body (3) which at least partially surrounds the at least one heating element (4). Abdeckung (1) nach Anspruch 11, dadurch gekennzeichnet, dass der Wärmeschutzkörper (3) einen von dem Gasstoffstrom durchströmbaren Strömungskanal ausbildet.Cover (1) according to claim 11, characterized in that the heat protection body (3) forms a flow-through of the gas flow through the flow channel. Abdeckung (1) nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass der Wärmeschutzkörper (3) aus einem temperaturbeständigen Material hergestellt ist.Cover (1) according to claim 11 or 12, characterized in that the heat protection body (3) is made of a temperature-resistant material. Abdeckung (1) nach einem der oben genannten Ansprüche, dadurch gekennzeichnet, dass wenigstens ein Kontaktelement (15) integriert ist, mit dem die Heizeinheit an einem maschinenseitigen Gegenkontakt elektrisch anschließbar ist.Cover (1) according to one of the above claims, characterized in that at least one contact element (15) is integrated, with which the heating unit is electrically connectable to a machine-side mating contact. Abdeckung (1) nach Anspruch 14, dadurch gekennzeichnet, dass das Kontaktelement (15) als ein Teil einer Steckerverbindung ausgestaltet ist.Cover (1) according to claim 14, characterized in that the contact element (15) is designed as a part of a plug connection. Abdeckung (1) nach Anspruch 14 oder 15, dadurch gekennzeichnet, dass das Kontaktelement (15) in der Abdeckung (1) integriert ist. Cover (1) according to claim 14 or 15, characterized in that the contact element (15) in the cover (1) is integrated. Abdeckung (1) nach einem der oben genannten Ansprüche, dadurch gekennzeichnet, dass die Abdeckung (1) ein behälterförmiges Gehäuse (2) umfasst, das als ein Spritzgussteil ausgestaltet ist.Cover (1) according to one of the above claims, characterized in that the cover (1) comprises a container-shaped housing (2), which is designed as an injection molded part. Abdeckung (1) nach Anspruch 17, dadurch gekennzeichnet, dass das Gehäuse (2) als ein Kunststoffteil ausgestaltet ist, das abschnittsweise mit wenigstens einem Schutzbereich aus einem anderen Material versehen ist.Cover (1) according to claim 17, characterized in that the housing (2) is designed as a plastic part, which is provided in sections with at least one protective area of a different material. Abdeckung (1) nach Anspruch 18, dadurch gekennzeichnet, dass der wenigstens eine Schutzbereich in einem Bereich angeordnet ist, in dem im Betrieb eine hohe Temperatur auftritt.Cover (1) according to claim 18, characterized in that the at least one protection region is arranged in a region in which a high temperature occurs during operation. Wäschetrockner (17) zum Trocknen feuchter Wäsche mit einem Gasstoffstrom, wobei der Wäschetrockner (17) mit Wänden (17'), einer Luftzufuhr und mit einem von dem Gasstoffstrom durchströmbaren Kanal ausgeführt ist, dadurch gekennzeichnet, dass der Wäschetrockner (17) eine Abdeckung (1) nach einem der Ansprüche 1 bis 17 umfasst und dass der Kanal wenigstens abschnittsweise von der Abdeckung (1) gebildet ist.A tumble dryer (17) for drying damp laundry with a gas stream, wherein the laundry dryer (17) is provided with walls (17 '), an air supply and a channel through which the gas stream can flow, characterized in that the laundry dryer (17) has a cover ( 1) according to one of claims 1 to 17 and that the channel is at least partially formed by the cover (1). Verfahren zum Zusammenbau eines Wäschetrockners (17) durch den im Betrieb ein Gasstoffstrom zum Trocknen feuchter Wäsche erwärmbar ist, umfassend folgende Verfahrensschritte: Vormontieren einer Abdeckung (1) zu einer Heizeinheit durch Anbringen wenigstens eines Heizelements (4) und Ausbilden eines Kanals; Anbringen der Abdeckung (1) von außen an einer Wand (17') des Wäschetrockners (17) und Verbinden des Kanals mit einer Luftzufuhr des Wäschetrockners (17). Method for assembling a tumble dryer (17) by means of which, in operation, a gas stream for drying damp laundry can be heated, comprising the following method steps: Pre-assembling a cover (1) to a heating unit by attaching at least one heating element (4) and forming a channel; Attaching the cover (1) from the outside to a wall (17 ') of the clothes dryer (17) and connecting the channel with an air supply of the clothes dryer (17). Verfahren nach Anspruch 21, umfassend folgenden Verfahrensschritt: Anbringen der Abdeckung durch lösbares oder unlösbares Verrasten an der Wand. A method according to claim 21, comprising the following method step: Attaching the cover by releasable or non-releasable locking on the wall. Verfahren nach Anspruch 21 oder 22, umfassend folgenden Verfahrensschritt: Gleichzeitiges Schließen eines Kontaktes zur Stromversorgung des Heizelements beim Anbringen der Abdeckung (1) an der Wand (17'). A method according to claim 21 or 22, comprising the following method step: Simultaneous closing of a contact to the power supply of the heating element when attaching the cover (1) on the wall (17 '). Verfahren nach einem der Ansprüche 21 bis 23, umfassend folgenden Verfahrensschritt: Gleichzeitiges im Wesentlichen gasdichtes Abdichten des Kanals während des Anbringens der Abdeckung (1) an der Wand (17') des Wäschetrockners (17). Method according to one of claims 21 to 23, comprising the following method step: Simultaneously substantially gas-tight sealing of the channel during the attachment of the cover (1) on the wall (17 ') of the clothes dryer (17).
EP03027650A 2003-12-02 2003-12-02 Cover for a laundry dryer and process for its assembly Revoked EP1538255B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP03027650A EP1538255B1 (en) 2003-12-02 2003-12-02 Cover for a laundry dryer and process for its assembly
DE50302587T DE50302587D1 (en) 2003-12-02 2003-12-02 Cover for a tumble dryer and method of assembling it
AT03027650T ATE319874T1 (en) 2003-12-02 2003-12-02 COVER FOR A CLOTHES DRYER AND METHOD FOR ASSEMBLY THEREOF
US10/999,813 US8371040B2 (en) 2003-12-02 2004-11-29 Cover for a clothes dryer and assembling method thereof
JP2004346859A JP2005169106A (en) 2003-12-02 2004-11-30 Cover for clothes dryer, and assembling method thereof
KR1020040100094A KR100676007B1 (en) 2003-12-02 2004-12-01 Cover for a Clothes Dryer and Assembling Method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03027650A EP1538255B1 (en) 2003-12-02 2003-12-02 Cover for a laundry dryer and process for its assembly

Publications (2)

Publication Number Publication Date
EP1538255A1 true EP1538255A1 (en) 2005-06-08
EP1538255B1 EP1538255B1 (en) 2006-03-08

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EP03027650A Revoked EP1538255B1 (en) 2003-12-02 2003-12-02 Cover for a laundry dryer and process for its assembly

Country Status (6)

Country Link
US (1) US8371040B2 (en)
EP (1) EP1538255B1 (en)
JP (1) JP2005169106A (en)
KR (1) KR100676007B1 (en)
AT (1) ATE319874T1 (en)
DE (1) DE50302587D1 (en)

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ATE319874T1 (en) 2006-03-15
DE50302587D1 (en) 2006-05-04
US8371040B2 (en) 2013-02-12
KR100676007B1 (en) 2007-01-29
JP2005169106A (en) 2005-06-30
US20050217138A1 (en) 2005-10-06
KR20050053341A (en) 2005-06-08
EP1538255B1 (en) 2006-03-08

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