EP1593772B1 - Heating subassembly of laundry dryer - Google Patents

Heating subassembly of laundry dryer Download PDF

Info

Publication number
EP1593772B1
EP1593772B1 EP04011008A EP04011008A EP1593772B1 EP 1593772 B1 EP1593772 B1 EP 1593772B1 EP 04011008 A EP04011008 A EP 04011008A EP 04011008 A EP04011008 A EP 04011008A EP 1593772 B1 EP1593772 B1 EP 1593772B1
Authority
EP
European Patent Office
Prior art keywords
heating assembly
flow
hot air
heating
air flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04011008A
Other languages
German (de)
French (fr)
Other versions
EP1593772A1 (en
Inventor
Andreas Lösch
Ralf Frohn
Jérôme Grunewald
Jens Köhne
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
Application filed by DBK David and Baader GmbH filed Critical DBK David and Baader GmbH
Priority to DE502004010348T priority Critical patent/DE502004010348D1/en
Priority to EP04011008A priority patent/EP1593772B1/en
Priority to AT04011008T priority patent/ATE448351T1/en
Priority to US11/123,888 priority patent/US7425688B2/en
Publication of EP1593772A1 publication Critical patent/EP1593772A1/en
Application granted granted Critical
Publication of EP1593772B1 publication Critical patent/EP1593772B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 
    • D06F58/26—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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/52—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to electric heating means, e.g. temperature or voltage
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/26—Condition of the drying air, e.g. air humidity or temperature

Definitions

  • the invention relates to a heating assembly for heating a flowing in a flow channel of a tumble dryer hot air flow, wherein the heating assembly is configured usable in the flow channel and at least one of the hot air flow in a flow direction arranged heating element, at least one obliquely to the flow direction, the hot air flow during operation deflecting deflection and at least one of the temperature of the hot air flow detectable and projecting on the deflection surface and in a Kem Scheme the hot air flow temperature sensor comprises.
  • tumble dry laundry which is filled in a rotatable drum inside the tumble dryer, dried by a stream of hot air.
  • the hot air stream is passed from an air supply through the usually between the drum and a rear wall of the tumble dryer running flow channel into the drum and through the wet laundry.
  • a heating assembly is used, which heats the hot air flow with at least one heating element.
  • at least one temperature sensor determines the temperature of the hot air flow. If a predetermined limit temperature is exceeded, the heating element is switched off by the control unit of the clothes dryer.
  • Such temperature control allows the laundry to dry at a temperature suitable for the fabrics. In addition, this is to prevent this, that the rear wall of the tumble dryer heated excessively, and thus the reliability of the clothes dryer is at risk.
  • a clothes dryer is described in which a surface heater is arranged in a flow channel.
  • the surface heater of the DE-A-33 40 313 has two heating elements and two temperature sensors.
  • US 420,7686 discloses a heating assembly for a tumble dryer according to the preamble of claim 1.
  • the present invention has for its object to provide a heating assembly, in which the temperature control can be performed more accurately.
  • this object is achieved in that the deflection surface on the side facing away from the hot air flow forms a curved recess in the installed state in the flow channel.
  • This solution is structurally simple and allows a more accurate temperature control by a more accurate temperature determination of the hot air flow.
  • the core region inside the hot air flow is heated more strongly by the heating element than the outer shell region, which is e.g. is cooled faster by the cold wall of the flow channel and / or flows only indirectly along the heating element.
  • the hitherto only measured in the jacket region temperature of the hot air flow was therefore not relevant for the temperature control maximum temperature and not representative of the maximum temperature of the hot air flow.
  • the maximum temperature can be determined so reliably that the permissible limit temperature of the hot air flow is no longer exceeded. Consequently, neither the textiles to be dried are exposed to high temperatures that can lead to their damage, nor heats the outer wall of the clothes dryer on the allowable temperatures.
  • the at least one temperature sensor is accommodated on the side facing away from the hot air flow in a recess.
  • the recess is formed by the deflection, whereby the heating assembly is designed structurally simple. Furthermore, the recess is formed arched in the installed state in the flow channel.
  • the heating assembly according to the invention can be further developed by different, mutually independent, each advantageous embodiments. These refinements and the advantages associated with the respective embodiments will be briefly discussed below.
  • a deflecting surface which deflects the hot air flow from a throughflow direction into an outflow direction and projects into it can be oriented at an angle to the throughflow direction which is smaller than the angle of the throughflow direction to the outflow direction.
  • the outflow direction can advantageously lead into the laundry drum inside.
  • the at least one temperature sensor can be designed as a thermostat, by means of which the energy supply of the at least one heating element is temperature-dependent controllable.
  • the at least one heating element is switched off by the thermostat when the allowable limit temperature is exceeded. This saves additional control lines to the control unit of the tumble dryer, whereby the material costs of the heating assembly are reduced.
  • the heating assembly is thereby configured as a self-monitoring module unit, which only needs to be supplied with energy during operation of the tumble dryer.
  • the heating assembly can have a substantially planar outer contour on the side facing away from the hot air flow in a cross section transverse to the rear wall of the tumble dryer.
  • the at least one temperature sensor can be arranged in the recess with the rear wall of the tumble dryer open at least accessible from the outside from the outside, in order to allow easy access to the temperature sensors for assembly or maintenance purposes.
  • the deflection can be made in an advantageous embodiment by deep drawing. This has the advantage that deep-drawn components can be produced inexpensively in large numbers and the deflection, which can form the recess on its side facing away from the hot air flow side, bids for this suitable. Furthermore, the deflecting means and the carrier element can be designed in one piece in order to reduce the production costs of the heating assembly according to the invention.
  • the heating module can be provided on the inflow side with at least one flow guide surface, wherein the at least one flow guide surface is aligned upstream in the inflow direction and on the inflow side in the flow direction.
  • the heating assembly may include at least one connector with which the heating assembly to an energy source and / or a control unit is electrically connected.
  • the connector may be a standardized connector, which reduces the cost of manufacturing the heating assembly as a cost-effective purchased part.
  • the connector can be attached to an outside of the flow channel can be arranged, cranked flange portion of the support element. This allows the connector to be pulled out of the space critical area between the flow channel and the rear wall of the dryer without increasing the thickness of the heating assembly.
  • the cranked flange portion of the support element may be provided with reinforcing means. As a result, the connector mounted on the flange portion is supported in a plug-in direction in which a mating connector can be inserted into the connector.
  • the heating assembly may comprise a sealing means with which the heating assembly is gas-tight attachable to the flow channel of the tumble dryer. This has the advantage that the hot air stream can not escape from the flow channel and is passed lossless into the laundry drum. Furthermore, the heating assembly may have at least one sealed opening, through which extends at least one connecting line of the at least one heating element. In the installed state, this has the advantage that the connection lines of the at least one heating element are conducted in a gastight manner into the interior of the flow channel and prevents the hot air flow from partially leaking from the flow channel.
  • the heating assembly can be configured in one piece pre-assembled in the flow channel used.
  • the at least one heating element can be configured with an electric heating coil.
  • the reaction time of heating coils is significantly lower than for example of tubular heaters, which are relatively sluggish due to a larger mass.
  • the heating coil can be mounted in an advantageous development of a support element. This has the advantage that a burned heating coil is still held on the support member and does not fall on other heating coils and thereby may cause an electrical short circuit.
  • a method and an apparatus for producing such a heating element is in DE 26 150 13 C3 described.
  • the at least one temperature sensor can be arranged downstream of the heating elements in that region of the hot air flow, which is closer to the supply side of the heating elements in an advantageous embodiment.
  • the at least one temperature sensor may be disposed downstream of the supply-side halves of the heating elements to thereby detect the overheating of the short-circuited heating elements even faster.
  • the at least one temperature sensor can be arranged at a location which lies substantially on a scratching line running on the supply side of the heating elements.
  • the scratch line is the locus of all particles that flow past the supply side of the heating elements over time.
  • the temperature sensor is arranged in an area which overlaps in the flow direction with the area around the supply side of the heating elements.
  • the invention relates not only to the above-described heating assembly and its embodiments but also to a tumble dryer for drying damp laundry with a hot air flow, wherein the tumble dryer is configured with an air supply and with a flow channel through which the hot air flow can flow.
  • the tumble dryer comprises a heating assembly according to one of the above embodiments.
  • the heating assembly of the tumble dryer according to the invention at least partially form the flow channel of the tumble dryer. This has the advantage that the heating assembly is particularly easy to install and reduce the manufacturing cost of the laundry dryer according to the invention. Furthermore, the heating assembly with at least one locking means can be releasably or permanently attached to the flow channel, whereby the necessary assembly time of the tumble dryer is reduced.
  • the invention relates not only to the above-described devices and their further embodiments, but also to a method for assembling a tumble dryer, by means of which a hot air stream for heating moist laundry can be heated during operation.
  • the invention provides that a deflection, which has a deflection surface, at least one heating element and at least one thermostat are preassembled to a heating assembly, wherein the temperature sensor is disposed on the deflection and the deflection of a curved recess is trained. Thereafter, the heating assembly is arranged in an opening of the flow channel, which is flowed through during operation of the tumble dryer by the hot air flow, wherein the temperature sensor is arranged in a core region of the hot air flow projecting.
  • the heating assembly can be attached by releasable or non-releasable latching on the flow channel to facilitate the installation of the clothes dryer.
  • the heating module 1 comprises a carrier element 2, to which a deflecting means 3, two temperature sensors 4 and a plurality of heating elements 5 are mounted on the side, which faces a hot air stream 6 during operation of the heating assembly 1.
  • the heating elements 5 are arranged in a housing frame 7, which is fixed to the carrier element 2 and to which a plurality of insulating elements 7 'are mounted.
  • the housing frame 7 has opposite to the hot air stream 6 on several Strömungsleitstoff 8.
  • the hot air flow 6 impinges on the flow guiding means 8 of the housing frame 7 in an inflow direction E.
  • Flow guide 9 of the flow guide 8 are aligned upstream of the inflow E and the flow side in a flow direction D.
  • the hot air flow 6 is deflected from the inflow direction E in the flow direction D.
  • Heating module in the Fig. 1-3 the hot air flow 6 meets obliquely on the heating assembly 1. Therefore, the flow guide 8 on the housing frame 7 in the Fig. 1-3 also aligned obliquely to the housing frame 7.
  • the angle of the flow-guiding means 8 to the housing frame 7 is adapted accordingly.
  • the hot air flow 6 hits the heating elements 5 and flows through or flows around them. In this case, heat energy is released from the heating elements 5 to the hot air stream 6 and this heated.
  • the heating elements 5 convert electrical energy into heat energy.
  • electrical energy is introduced via connecting lines 10 in the heating elements 5.
  • the heating elements 5 each comprise a heating coil 11 which, due to its electrical resistance, heats up as electrical energy passes through it.
  • the in the Fig. 1-3 illustrated embodiment comprises two mutually parallel heating elements 5.
  • the heating elements 5 are electrically connected to a supply side 12 each having a connecting line 10, such as by soldering or a plug connection. At the opposite side of the supply side 12, the heating coils 11 of the two heating elements 5, for example, by a cable electrically connected to each other and thus connected in series.
  • the heating assembly During operation of the heating assembly 1, electrical energy flows from the supply side 12 through the heating coils 11 of the two heating elements 5 and out of the heating elements 5 on the supply side 12. Due to the electrical resistance, the heating coils 11 heat and release heat energy to the hot air stream 6 flowing around them.
  • the heating coils 11 are wound around support body 13.
  • a method and an apparatus for producing such heating elements is for example in DE 26 15 013 C3 described.
  • the heating elements 5 are designed to be stable and must be supported only at their ends to the mounted on the housing frame 7 insulating 7 '.
  • a blown heating coil 11 is held by the support body 13, thereby not falling on the heating coil 11 of the other heating element 5 and may cause a short circuit.
  • the insulating elements 7 In the insulating elements 7 'slots (not shown) are configured in which the heating elements 5 are inserted.
  • the heating elements 5 are mounted so that the flat support body 13 are aligned in the housing frame 7 parallel to the flow direction D. As a result, a particularly low flow resistance is achieved by the heating elements 5.
  • the housing frame 7 is in the in the Fig. 1-3 illustrated embodiment designed as a stamped and folded sheet metal part, on which on the inside of the insulating 7 'are mounted.
  • the housing frame 7 is electrically insulated from the heating elements 5 and thermally to the hot air stream 6.
  • the housing frame 7 is attached for example by spot welding on the support element.
  • the housing frame 7 and the support member 2 can also be riveted, glued or screwed.
  • the hot air stream 6 heated by the heating elements 5 strikes a deflection surface 14 of the deflection means 3 in the direction of flow D.
  • the deflection surface 14 of the deflecting means 3 is aligned such that the hot air flow 6, which strikes the deflection surface 14 in the flow direction D, is deflected in the direction of an outflow direction A.
  • the angle ⁇ of the deflection surface 14 to the flow direction D is smaller than the angle of the flow direction D to the outflow direction A.
  • the angle ⁇ of the deflection surface 14 to the flow direction D is substantially half as large as the angle of the flow direction D to the outflow A.
  • the heating assembly 1 is located in the outflow A advantageously the laundry drum of the tumble dryer.
  • the hot air stream 6 is directed by the deflection surface 14 in the direction of the laundry to be dried.
  • Fig. 1b shows that the temperature sensors 4 in the deflection surface 14 of the deflection means 3 are configured projecting into a core region 15 of the hot air flow 6.
  • the hot air stream 6 has a core region 15 which is surrounded by a jacket region 16.
  • the temperature in the jacket region 16 of the hot air stream 6 is lower than in the core region 15, since the jacket region 16 is cooled by the ambient air and the carrier element 2 and is heated less by the heating elements 5, through which it does not pass, but only flows past. Therefore, the maximum temperature of the hot air flow and the overheating of the heating elements 5 are more clearly understood from the temperature of the core portion 15 than the temperature of the shell portion 16.
  • the temperature sensors 4 are arranged to measure the temperature of the hot air flow 6 in its core portion 15 , Due to the better temperature detection, a precise temperature control of the hot air flow 6 is possible, which is particularly important when drying sensitive laundry.
  • the two temperature sensors 4 are arranged downstream of the halves of the heating elements 5, which lie on its supply side 12.
  • a short circuit between the heating coils 11 of the heating elements 5 can be caused.
  • the short circuit reduces the effective length of the heating coils 11, through which electric energy flows during operation and heats them, and the electrical resistance of the heating elements 5 is reduced.
  • the heating elements 5 heat only between the supply side 12 and the short circuit point, but there inadmissibly strong, because the introduced amount of energy remains unchanged.
  • the temperature sensors 4 are arranged downstream of the heating elements 5 in a region of the hot air flow 6, which is closer to the supply side 12 of the heating elements 5.
  • the heating elements 5 can be switched off in good time before the rear wall of the tumble dryer or the laundry in the laundry drum heat excessively high.
  • the scratch line is the locus of all particles that flow past the supply side of the heating elements over time.
  • the temperature of these particles increases with a short circuit of the heating elements and is monitored by the temperature sensors.
  • the temperature sensors are arranged in an area which lies in the direction of flow in the projection of the area on the supply side of the heating elements.
  • the temperature sensors 4 are arranged in openings (not shown) in the deflection surface 14 of the deflection means 3.
  • the temperature sensors 4 are characterized by a mechanically detachable or insoluble compound, e.g. by welding points 17, connected to the deflection means 3.
  • the temperature sensors 4 may be e.g. be connected by riveting, gluing, clinching or by a repeatedly detachable screw with the deflection 3.
  • the deflection means 3 is attached to the carrier element 2.
  • the support member 2 and the deflection means 3 are integrally formed as a deep-drawn sheet metal.
  • the carrier element 2 and the deflection means 3 can be produced in one production step, thereby reducing the sum of the individual parts and the manufacturing costs of the heating assembly 1.
  • a seal 18 is arranged, through which the heating assembly 1 is gas-tight attached to a flow channel of a tumble dryer. Furthermore, a sealed opening 19 is arranged in the support member 2, through which the connection lines 10 of the heating elements 5 are passed through the carrier element 2 gas-tight.
  • a recess 20 formed by the deflection surface 14 is formed on the side facing away from the hot air flow side of the heating assembly 1.
  • the recess 20 is curved in the flow channel 29.
  • the heating assembly 1 is formed so that it is on the side facing away from the hot air stream 6 in a cross section transverse to the rear wall of the tumble dryer has a substantially planar outer contour. As a result, the thickness D of the heating assembly 1 is minimized, which is particularly advantageous when installed in the tumble dryer, since there is often little space available for the heating assembly 1 in the tumble dryer.
  • the temperature sensors 4 are configured in the recess 20 with the rear wall 27 of the tumble dryer 26 open at least accessible from the rear side from the outside.
  • temperature sensors 4 are designed as thermostats. Thermostats are small switching units that switch an electrical signal depending on temperature. When the heating module 1 in the Fig. 1-3 the thermostats 4 turn off the heating elements 5 as soon as a predetermined limit temperature is exceeded.
  • the thermostats 4 may for example contain a bimetallic element that switches the energy flow to the heating elements 5 depending on temperature. This makes it possible to dispense with control lines to the control unit of the tumble dryer, since the heating assembly 1 monitors the temperature of the heating elements 5 independently and automatically shuts off when the limit temperature is exceeded.
  • thermostats 4 In order to be able to connect the thermostats 4 particularly easily, they are provided with two standardized connection contacts (not shown).
  • the connection lines 10 of the heating elements 5 are plugged with connector elements 21 on the connection contacts.
  • each thermostat 4 is connected by a further connecting line 10 'with a standardized connector 22.
  • the heating assembly 1 is connected in the installed state to a power source.
  • the connector 22 is configured on its rear side with a latching means 23. With the locking means 23 of the connector 22 is attached to a cranked flange portion 24 of the support member 2.
  • the cranked flange section 24 of the carrier element 2 is provided with reinforcements 25.
  • the connector 22 can be arranged by the cranked flange portion 24 outside the flow channel of the tumble dryer.
  • Fig. 4 shows the heating assembly 1 of Fig. 1-3 , which is installed in a clothes dryer 26.
  • the tumble dryer 26 is shown without a lid and with the rear wall 27 open.
  • the tumble dryer 26 comprises a laundry drum 28 in which wet laundry is in operation. From an air supply (not shown) of the hot air stream 6 is passed through a flow channel 29 in the laundry drum 28 for drying the wet laundry.
  • the flow channel 29 has an opening 30 into which the heating assembly 1 is inserted. By the heating assembly 1, the hot air stream 6 is heated in the flow channel 29.
  • notches 31 are arranged, which can be latched into counter-detents 32 of the heating assembly 1.
  • the heating assembly 1 can be fastened to the flow channel 29 repeatedly releasably and in a time-saving manner.
  • the detents 31 and mating detents 32 can also make a permanent connection or be replaced by a screw or rivet connection.
  • a mating connector 33 is inserted into the connector 22 to connect the heater assembly 1 to a power source (not shown). Since the flange portion 24 of the heating assembly 1 is cranked, the connector 22 is advantageously arranged in the free space next to the flow channel 29.
  • the heating assembly 1 forms a portion of the flow channel 29 in the installed state, whereby it is particularly simple and quick to install.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

A heating structural component (1) inserts in a flow channel and has a heating element (5) for a stream (6) of hot air to pass through in a through-flow direction (D) and temperature sensors (4) to detect the temperature of the stream of hot air. Independent claims are also included for the following: (A) A clothes drier for drying damp washing in a stream of hot air; (B) and for a method for assembling a clothes drier, through which, when operating, a stream of hot air is heated up so as to heat damp washing.

Description

Die Erfindung betrifft eine Heizbaugruppe zum Beheizen eines in einem Strömungskanal eines Wäschetrockners strömenden Heißluftstroms, wobei die Heizbaugruppe in den Strömungskanal einsetzbar ausgestaltet ist und wenigstens ein vom Heißluftstrom in einer Durchströmrichtung umströmbar angeordnetes Heizelement, wenigstens eine schräg zur Durchströmrichtung verlaufende, den Heißluftstrom im Betrieb umlenkende Umlenkfläche und wenigstens einen die Temperatur des Heißluftstroms erfassbaren und an der Umlenkfläche sowie in einen Kembereich des Heißluftstroms hineinragend angeordneten Temperatursensor umfasst.The invention relates to a heating assembly for heating a flowing in a flow channel of a tumble dryer hot air flow, wherein the heating assembly is configured usable in the flow channel and at least one of the hot air flow in a flow direction arranged heating element, at least one obliquely to the flow direction, the hot air flow during operation deflecting deflection and at least one of the temperature of the hot air flow detectable and projecting on the deflection surface and in a Kembereich the hot air flow temperature sensor comprises.

Üblicherweise wird bei Wäschetrocknern feuchte Wäsche, die in eine drehbare Trommel im Inneren des Wäschetrockners gefüllt ist, durch einen Heißluftstrom getrocknet. Der Heißluftstrom wird von einer Luftzufuhr durch den üblicherweise zwischen der Trommel und einer Rückwand des Wäschetrockners verlaufenden Strömungskanal in die Trommel hinein und durch die feuchte Wäsche geleitet. In den Strömungskanal ist eine Heizbaugruppe eingesetzt, die den Heißluftstrom mit wenigstens einem Heizelement beheizt. Im Betrieb ermittelt wenigstens ein Temperatursensor die Temperatur des Heißluftstroms. Wenn eine vorbestimmte Grenztemperatur überschritten wird, wird das Heizelement durch die Steuereinheit des Wäschetrockners abgeschaltet. Eine solche Temperatursteuerung ermöglicht das Trocknen der Wäsche mit einer für die Textilien geeigneten Temperatur. Außerdem soll hierdurch verhindert werden, dass sich die Rückwand des Wäschetrockners unzulässig stark erhitzt, und dadurch die Betriebssicherheit des Wäschetrockners gefährdet wird.Usually, in tumble dry laundry, which is filled in a rotatable drum inside the tumble dryer, dried by a stream of hot air. The hot air stream is passed from an air supply through the usually between the drum and a rear wall of the tumble dryer running flow channel into the drum and through the wet laundry. In the flow channel, a heating assembly is used, which heats the hot air flow with at least one heating element. In operation, at least one temperature sensor determines the temperature of the hot air flow. If a predetermined limit temperature is exceeded, the heating element is switched off by the control unit of the clothes dryer. Such temperature control allows the laundry to dry at a temperature suitable for the fabrics. In addition, this is to prevent this, that the rear wall of the tumble dryer heated excessively, and thus the reliability of the clothes dryer is at risk.

In der DE-A-33 40 313 ist ein Wäschetrockner beschrieben, bei dem ein Flächenheizkörper in einem Strömungskanal angeordnet ist. Der Flächenheizkörper der DE-A-33 40 313 weist zwei Heizelemente und zwei Temperatursensoren auf.In the DE-A-33 40 313 a clothes dryer is described in which a surface heater is arranged in a flow channel. The surface heater of the DE-A-33 40 313 has two heating elements and two temperature sensors.

US 420 7686 offenbart eine Heizbaugruppe für einen Wäschetrockner gemäß der Präambel von Anspruch 1. US 420,7686 discloses a heating assembly for a tumble dryer according to the preamble of claim 1.

Allerdings ist bei den bekannten Heizbaugruppen die Temperaturmessung ungenau, so dass es zu einer Überhitzung der Heizelemente und damit zu einer Überschreitung der für eine schonende Trocknung maximal zulässigen Temperatur und zu einer unzulässigen Erwärmung der Außenwand des Wäschetrockners kommen kann.However, in the known heating assemblies, the temperature measurement is inaccurate, so that it can lead to overheating of the heating elements and thus to exceeding the maximum allowable for gentle drying temperature and inadmissible heating of the outer wall of the clothes dryer.

Angesichts dieses Problems liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine Heizbaugruppe zu liefern, bei der die Temperatursteuerung genauer durchgeführt werden kann.In view of this problem, the present invention has for its object to provide a heating assembly, in which the temperature control can be performed more accurately.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass die Umlenkfläche an der dem Heißluftstrom abgewandten Seite eine in eingebautem Zustand in den Strömungskanal gewölbte Aussparung ausbildet.According to the invention, this object is achieved in that the deflection surface on the side facing away from the hot air flow forms a curved recess in the installed state in the flow channel.

Diese Lösung ist konstruktiv einfach und ermöglicht eine genauere Temperatursteuerung durch eine exaktere Temperaturbestimmung des Heißluftstroms.This solution is structurally simple and allows a more accurate temperature control by a more accurate temperature determination of the hot air flow.

Im Betrieb des Wäschetrockners wird der im Inneren des Heißluftstroms liegende Kembereich durch das Heizelement stärker erwärmt als der außen liegende Mantelbereich, der z.B. durch die kalte Wandung des Strömungskanals schneller abgekühlt wird und/oder am Heizelement nur mittelbar entlang strömt. Die bislang lediglich im Mantelbereich gemessene Temperatur des Heißluftstroms war also nicht die für die Temperatursteuerung relevante Höchsttemperatur und nicht repräsentativ für die Höchsttemperatur des Heißluftstroms. Mit der erfindungsgemäßen Lösung kann die Höchsttemperatur so zuverlässig ermittelt werden, dass die zulässige Grenztemperatur des Heißluftstroms nicht mehr überschritten wird. Folglich werden weder die zu trocknenden Textilien zu hohen Temperaturen ausgesetzt, die zu ihrer Beschädigung führen können, noch heizt sich die Außenwand des Wäschetrockners über die zulässigen Temperaturen auf.During operation of the tumble dryer, the core region inside the hot air flow is heated more strongly by the heating element than the outer shell region, which is e.g. is cooled faster by the cold wall of the flow channel and / or flows only indirectly along the heating element. The hitherto only measured in the jacket region temperature of the hot air flow was therefore not relevant for the temperature control maximum temperature and not representative of the maximum temperature of the hot air flow. With the solution according to the invention, the maximum temperature can be determined so reliably that the permissible limit temperature of the hot air flow is no longer exceeded. Consequently, neither the textiles to be dried are exposed to high temperatures that can lead to their damage, nor heats the outer wall of the clothes dryer on the allowable temperatures.

Ein Grund für eine überhöhte Temperatur des Heißluftstroms kann beispielsweise auch ein fehlerhaftes Überhitzen des Heizelements aufgrund eines Kurzschlusses sein. Durch die erfindungsgemäße Lösung ist das Überhitzen des Heizelementes schneller erkennbar, weil die Temperatur der Kernströmung sofort die Temperatur des überhitzten Heizelements annimmt.One reason for an excessive temperature of the hot air flow, for example, also be a faulty overheating of the heating element due to a short circuit. By the solution according to the invention, the overheating of the heating element can be seen more quickly because the temperature of the core flow immediately assumes the temperature of the superheated heating element.

Innerhalb des Wäschetrockners, im Bereich zwischen der Rückwand und der Wäschetrommel steht nur wenig Bauraum für den Strömungskanal und die darin eingesetzte Heizbaugruppe zur Verfügung. Um die Heizbaugruppe möglichst gering aufbauend auszugestalten, ist der wenigstens eine Temperatursensor an der dem Heißluftstrom abgewandten Seite in einer Aussparung aufgenommen. Die Aussparung ist von der Umlenkfläche gebildet, wodurch die Heizbaugruppe konstruktiv einfach ausgestaltet ist. Weiterhin ist die Aussparung im eingebauten Zustand in den Strömungskanal gewölbt ausgebildet.Within the tumble dryer, in the area between the rear wall and the laundry drum is little space for the flow channel and the heating assembly used therein. In order to construct the heating assembly as low as possible, the at least one temperature sensor is accommodated on the side facing away from the hot air flow in a recess. The recess is formed by the deflection, whereby the heating assembly is designed structurally simple. Furthermore, the recess is formed arched in the installed state in the flow channel.

Die erfindungsgemäße Heizbaugruppe 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 heating assembly according to the invention can be further developed by different, mutually independent, each advantageous embodiments. These refinements and the advantages associated with the respective embodiments will be briefly discussed below.

So kann in einer vorteilhaften Ausgestaltung eine den Heißluftstrom von einer Durchströmrichtung in eine Ausströmrichtung umlenkende und in ihn hineinragende Umlenkfläche in einem Winkel zur Durchströmrichtung ausgerichtet sein, der kleiner ist als der Winkel der Durchströmrichtung zur Ausströmrichtung. Die Ausströmrichtung kann dabei vorteilhafterweise in die Wäschetrommel hinein führen. Dies hat den Vorteil, dass hierdurch auf separate, der Heizbaugruppe nachgeschaltete Umlenkmittel verzichtet werden kann und ein homogener Heißluftstrom in Ausströmrichtung erzeugt wird. Um die Heizbaugruppe konstruktiv möglichst einfach auszugestalten, kann der wenigstens eine Temperatursensor ferner an der Umlenkfläche angeordnet sein. Weiterhin kann die Umlenkfläche in den Kembereich des Heißluftstroms hineinragen.Thus, in an advantageous embodiment, a deflecting surface which deflects the hot air flow from a throughflow direction into an outflow direction and projects into it can be oriented at an angle to the throughflow direction which is smaller than the angle of the throughflow direction to the outflow direction. The outflow direction can advantageously lead into the laundry drum inside. This has the advantage that in this way can be dispensed with separate, the heating assembly downstream deflection and a homogeneous hot air flow is generated in the outflow. In order to constructively design the heating assembly as simply as possible, the at least one temperature sensor can furthermore be arranged on the deflection surface. Furthermore, the deflection surface can protrude into the core region of the hot air flow.

In einer vorteilhaften Weiterbildung kann der wenigstens eine Temperatursensor als Thermostat ausgestaltet sein, durch den die Energiezufuhr des wenigstens einen Heizelements temperaturabhängig steuerbar ist. Hierdurch wird das wenigstens eine Heizelement durch den Thermostat abgeschaltet, wenn die zulässige Grenztemperatur überschritten wird. Dies spart zusätzliche Steuerleitungen zur Steuereinheit des Wäschetrockners ein, wodurch die Materialkosten der Heizbaugruppe reduziert werden. Ferner ist die Heizbaugruppe hierdurch als selbstüberwachende Moduleinheit ausgestaltet, die im Betrieb des Wäschetrockners nur mit Energie versorgt werden muss.In an advantageous development, the at least one temperature sensor can be designed as a thermostat, by means of which the energy supply of the at least one heating element is temperature-dependent controllable. As a result, the at least one heating element is switched off by the thermostat when the allowable limit temperature is exceeded. This saves additional control lines to the control unit of the tumble dryer, whereby the material costs of the heating assembly are reduced. Furthermore, the heating assembly is thereby configured as a self-monitoring module unit, which only needs to be supplied with energy during operation of the tumble dryer.

Damit durch die montierte Heizbaugruppe ein vorgeschriebener Mindestabstand zur Rückwand des Wäschetrockners an keiner Stelle unterschritten wird, kann die Heizbaugruppe auf der dem Heißluftstrom abgewandten Seite in einem Querschnitt quer zur Rückwand des Wäschetrockners eine im Wesentlichen plane Außenkontur haben. Weiterhin kann der wenigstens eine Themperatursensor in der Aussparung bei geöffneter Rückwand des Wäschetrockners wenigstens von seiner Rückseite her von außen zugänglich angeordnet sein, um zu Montage- oder Wartungszwecken einen einfachen Zugriff auf die Temperatursensoren zu erlauben.To ensure that the installed heating assembly does not fall below a prescribed minimum distance from the rear wall of the tumble dryer at any point, the heating assembly can have a substantially planar outer contour on the side facing away from the hot air flow in a cross section transverse to the rear wall of the tumble dryer. Furthermore, the at least one temperature sensor can be arranged in the recess with the rear wall of the tumble dryer open at least accessible from the outside from the outside, in order to allow easy access to the temperature sensors for assembly or maintenance purposes.

Weiterhin kann das Umlenkmittel in einer vorteilhaften Ausgestaltung im Tiefziehverfahren hergestellt sein. Dies hat den Vorteil, dass tiefgezogene Bauteile in großen Stückzahlen kostengünstig hergestellt werden können und sich das Umlenkmittel, das an seiner dem Heißluftstrom abgewandten Seite die Aussparung ausbilden kann, hierfür begut eignet. Ferner können das Umlenkmittel und das Trägerelement einteilig ausgestaltet sein, um die Herstellungskosten der erfindungsgemäßen Heizbaugruppe zu reduzieren.Furthermore, the deflection can be made in an advantageous embodiment by deep drawing. This has the advantage that deep-drawn components can be produced inexpensively in large numbers and the deflection, which can form the recess on its side facing away from the hot air flow side, bids for this suitable. Furthermore, the deflecting means and the carrier element can be designed in one piece in order to reduce the production costs of the heating assembly according to the invention.

In einer vorteilhaften Weiterbildung kann die Heizbaugruppe einströmseitig mit wenigstens einer Strömungsleitfläche versehen sein, wobei die wenigstens eine Strömungsleitfläche einströmseitig in der Einströmrichtung und durchströmseitig in der Durchströmrichtung ausgerichtet ist. Dies hat den Vorteil, dass ein Heißluftstrom, der schräg auf die Heizbaugruppe auftrifft, in die für die Erwärmung des Heißluftstroms optimale Durchströmrichtung umgelenkt wird, wodurch eine effektive Erwärmung des Heißluftstroms gewährleistet ist.In an advantageous development, the heating module can be provided on the inflow side with at least one flow guide surface, wherein the at least one flow guide surface is aligned upstream in the inflow direction and on the inflow side in the flow direction. This has the advantage that a hot air flow, which impinges obliquely on the heating assembly, is deflected into the optimum for the heating of the hot air flow direction, whereby an effective heating of the hot air flow is ensured.

Um die Heizbaugruppe schnell und einfach in den Wäschetrockner einbauen und/oder aus ihm ausbauen zu können, kann die Heizbaugruppe wenigstens einen Steckverbinder umfassen, mit dem die Heizbaugruppe an eine Energiequelle und/oder eine Steuereinheit elektrisch anschließbar ist. Der Steckverbinder kann ein genormter Steckverbinder sein, der als kostengünstiges Zukaufteil die Herstellungskosten der Heizbaugruppe reduziert. Ferner kann der Steckverbinder an einem außerhalb des Strömungskanals anordenbaren, gekröpften Flanschabschnitt des Trägerelements angebracht sein. Hierdurch kann der Steckverbinder aus dem bauraumkritischen Bereich zwischen Strömungskanal und Rückwand des Wäschetrockners herausgezogen angeordnet werden, ohne die Dicke der Heizbaugruppe zu vergrößern. Weiterhin kann der gekröpfte Flanschabschnitt des Trägerelementes mit Verstärkungsmitteln versehen sein. Hierdurch ist der auf dem Flanschabschnitt angebrachte Steckverbinder in einer Einsteckrichtung abgestützt, in der ein Gegenstecker in den Steckverbinder einsteckbar ist.To quickly and easily install the heater assembly in the dryer and / or to be able to remove it, the heating assembly may include at least one connector with which the heating assembly to an energy source and / or a control unit is electrically connected. The connector may be a standardized connector, which reduces the cost of manufacturing the heating assembly as a cost-effective purchased part. Furthermore, the connector can be attached to an outside of the flow channel can be arranged, cranked flange portion of the support element. This allows the connector to be pulled out of the space critical area between the flow channel and the rear wall of the dryer without increasing the thickness of the heating assembly. Furthermore, the cranked flange portion of the support element may be provided with reinforcing means. As a result, the connector mounted on the flange portion is supported in a plug-in direction in which a mating connector can be inserted into the connector.

In einer weiteren vorteilhaften Ausgestaltung kann die Heizbaugruppe ein Dichtmittel aufweisen, mit dem die Heizbaugruppe gasdicht am Strömungskanal des Wäschetrockners anbringbar ist. Dies hat den Vorteil, dass der Heißluftstrom nicht aus dem Strömungskanal entweichen kann und verlustfrei in die Wäschetrommel geleitet wird. Ferner kann die Heizbaugruppe wenigstens eine abgedichtete Öffnung aufweisen, durch die sich wenigstens eine Anschlussleitung des wenigstens einen Heizelementes erstreckt. Dies hat im eingebauten Zustand den Vorteil, dass die Anschlussleitungen des wenigstens einen Heizelementes gasdicht ins Innere des Strömungskanals geleitet werden und verhindert wird, dass der Heißluftstrom teilweise aus dem Strömungskanal austritt.In a further advantageous embodiment, the heating assembly may comprise a sealing means with which the heating assembly is gas-tight attachable to the flow channel of the tumble dryer. This has the advantage that the hot air stream can not escape from the flow channel and is passed lossless into the laundry drum. Furthermore, the heating assembly may have at least one sealed opening, through which extends at least one connecting line of the at least one heating element. In the installed state, this has the advantage that the connection lines of the at least one heating element are conducted in a gastight manner into the interior of the flow channel and prevents the hot air flow from partially leaking from the flow channel.

Um die Heizbaugruppe leicht in den Wäschetrockner einbauen zu können und die dafür nötige Montagezeit zu reduzieren, kann die Heizbaugruppe einstückig vormontiert in den Strömungskanal einsetzbar ausgestaltet sein.In order to easily install the heating assembly in the dryer and to reduce the necessary assembly time, the heating assembly can be configured in one piece pre-assembled in the flow channel used.

Damit möglichst wenig Totzeit beim Ein- und/oder Ausschalten der Heizbaugruppe bis zum Heizen oder Abkühlen entsteht, kann das wenigstens eine Heizelement mit einer elektrischen Heizspirale ausgestaltet sein. Die Reaktionszeit von Heizspiralen ist deutlich niedriger als z.B. von Rohrheizkörpern, die durch eine größere Masse vergleichsweise träge sind. Ferner kann die Heizspirale in einer vorteilhaften Weiterbildung an einem Tragelement angebracht sein. Dies hat den Vorteil, dass eine durchgebrannte Heizspirale weiterhin am Tragelement gehalten wird und nicht auf andere Heizspiralen fällt und dadurch einen elektrischen Kurzschluss verursachen kann. Ein Verfahren und eine Vorrichtung zur Herstellung eines solchen Heizelementes ist in der DE 26 150 13 C3 beschrieben.So that as little dead time as possible when switching on and / or off the heating assembly until heating or cooling, the at least one heating element can be configured with an electric heating coil. The reaction time of heating coils is significantly lower than for example of tubular heaters, which are relatively sluggish due to a larger mass. Furthermore, the heating coil can be mounted in an advantageous development of a support element. This has the advantage that a burned heating coil is still held on the support member and does not fall on other heating coils and thereby may cause an electrical short circuit. A method and an apparatus for producing such a heating element is in DE 26 150 13 C3 described.

Um ein Überhitzen der Heizelemente im Fall eines Kurzschlusses möglichst schnell zu erfassen, kann in einer vorteilhaften Ausgestaltung der wenigstens eine Temperatursensor stromabwärts der Heizelemente in demjenigen Bereich des Heißluftstroms angeordnet sein, der näher an der Versorgungsseite der Heizelemente liegt.In order to detect overheating of the heating elements in the event of a short circuit as quickly as possible, the at least one temperature sensor can be arranged downstream of the heating elements in that region of the hot air flow, which is closer to the supply side of the heating elements in an advantageous embodiment.

Ferner kann der wenigstens eine Temperatursensor stromabwärts der versorgungsseitigen Hälften der Heizelemente angeordnet sein, um dadurch das Überhitzen der kurzgeschlossenen Heizelemente noch schneller zu erfassen. Weiterhin kann der wenigstens eine Temperatursensor an einer Stelle angeordnet sein, die im Wesentlichen auf einer an der Versorgungsseite der Heizelemente verlaufenden Streichlinie liegt. Die Streichlinie ist dabei die Ortskurve aller Teilchen, die im Laufe der Zeit an der Versorgungsseite der Heizelemente vorbeiströmen. Dadurch ist der Temperatursensor in einem Bereich angeordnet, der in Durchströmrichtung mit dem Bereich um die Versorgungsseite der Heizelemente überlappt.Further, the at least one temperature sensor may be disposed downstream of the supply-side halves of the heating elements to thereby detect the overheating of the short-circuited heating elements even faster. Furthermore, the at least one temperature sensor can be arranged at a location which lies substantially on a scratching line running on the supply side of the heating elements. The scratch line is the locus of all particles that flow past the supply side of the heating elements over time. As a result, the temperature sensor is arranged in an area which overlaps in the flow direction with the area around the supply side of the heating elements.

Die Erfindung betrifft neben der oben beschriebenen Heizbaugruppe und deren Ausgestaltungen auch einen Wäschetrockner zum Trocknen feuchter Wäsche mit einem Heißluftstrom, wobei der Wäschetrockner mit einer Luftzufuhr und mit einem vom Heißluftstrom durchströmbaren Strömungskanal ausgestaltet ist. Um den Heißluftstrom zu beheizen und dennoch eine Schädigung der Wäscheteile und ein Überhitzen der Außenwand des Wäschetrockners zu verhindern, umfasst der Wäschetrockner eine Heizbaugruppe nach einer der oben genannten Ausführungsformen.The invention relates not only to the above-described heating assembly and its embodiments but also to a tumble dryer for drying damp laundry with a hot air flow, wherein the tumble dryer is configured with an air supply and with a flow channel through which the hot air flow can flow. In order to heat the hot air flow and still prevent damage to the laundry parts and overheating of the outer wall of the tumble dryer, the tumble dryer comprises a heating assembly according to one of the above embodiments.

In einer vorteilhaften Ausgestaltung kann die Heizbaugruppe des erfindungsgemäßen Wäschetrockners wenigstens abschnittsweise den Strömungskanal des Wäschetrockners ausbilden. Dies hat den Vorteil, dass die Heizbaugruppe besonders leicht montierbar ist und sich die Herstellungskosten des erfindungsgemäßen Wäschetrockners reduzieren. Ferner kann die Heizbaugruppe mit wenigstens einem Rastmittel lösbar oder unlösbar am Strömungskanal angebracht sein, wodurch sich die nötige Montagezeit des Wäschetrockners reduziert.In an advantageous embodiment, the heating assembly of the tumble dryer according to the invention at least partially form the flow channel of the tumble dryer. This has the advantage that the heating assembly is particularly easy to install and reduce the manufacturing cost of the laundry dryer according to the invention. Furthermore, the heating assembly with at least one locking means can be releasably or permanently attached to the flow channel, whereby the necessary assembly time of the tumble dryer is reduced.

Die Erfindung betrifft neben den oben erläuterten Vorrichtungen und ihren weiteren Ausgestaltungen auch ein Verfahren zum Zusammenbau eines Wäschetrockners, durch den im Betrieb ein Heißluftstrom zum Erwärmen feuchter Wäsche beheizbar ist. Um die nötige Montagezeit des Wäschetrockners zu verkürzen, ist erfindungsgemäß vorgesehen, dass ein Umlenkmittel, das eine Umlenkfläche aufweist, wenigstens ein Heizelement und wenigstens ein Thermostat zu einer Heizbaugruppe vormontiert werden, wobei der Temperatursensor an der Umlenkfläche angeordnet wird und von der Umlenkfläche eine gewölbte Aussparung ausgebildet wird. Danach wird, die Heizbaugruppe in einer Öffnung des Strömungskanals, der im Betrieb des Wäschetrockners vom Heißluftstrom durchströmt wird, angeordnet, wobei der Temperatursensor in einem Kembereich des Heißluftstroms hineinragend angeordnet wird.The invention relates not only to the above-described devices and their further embodiments, but also to a method for assembling a tumble dryer, by means of which a hot air stream for heating moist laundry can be heated during operation. In order to shorten the necessary assembly time of the clothes dryer, the invention provides that a deflection, which has a deflection surface, at least one heating element and at least one thermostat are preassembled to a heating assembly, wherein the temperature sensor is disposed on the deflection and the deflection of a curved recess is trained. Thereafter, the heating assembly is arranged in an opening of the flow channel, which is flowed through during operation of the tumble dryer by the hot air flow, wherein the temperature sensor is arranged in a core region of the hot air flow projecting.

In einer vorteilhaften Weiterbildung kann die Heizbaugruppe durch lösbares oder unlösbares Verrasten am Strömungskanal angebracht werden, um die Montage des Wäschetrockners zu vereinfachen.In an advantageous development, the heating assembly can be attached by releasable or non-releasable latching on the flow channel to facilitate the installation of the clothes dryer.

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 wurde.The invention will now be described by way of example with reference to the accompanying drawings. The different features can be combined independently of each other, as has already been explained above in the individual advantageous embodiments.

Es zeigen:

Fig. 1a
eine perspektivische Ansicht einer beispielhaften Ausführungsform einer erfindungsgemäßen Heizbaugruppe schematisch von vorne;
Fig. 1b
eine schematische Darstellung des Heißluftstroms innerhalb der erfindungsgemäßen Heizbaugruppe aus Fig. 1a;
Fig. 2
eine perspektivische Ansicht der Heizbaugruppe aus Fig. 1a schematisch von hinten;
Fig. 3
eine perspektivische Ansicht der erfindungsgemäßen Heizbaugruppe aus den Fig. 1 und 2 schematisch von oben;
Fig. 4
eine perspektivische Ansicht eines erfindungsgemäßen Wäschetrockners schematisch von hinten.
Show it:
Fig. 1a
a perspective view of an exemplary embodiment of a heating assembly according to the invention schematically from the front;
Fig. 1b
a schematic representation of the hot air flow within the heating assembly according to the invention from Fig. 1a ;
Fig. 2
a perspective view of the heating assembly Fig. 1a schematically from behind;
Fig. 3
a perspective view of the heating assembly according to the invention from the Fig. 1 and 2 schematically from above;
Fig. 4
a perspective view of a clothes dryer according to the invention schematically from behind.

Zunächst wird der allgemeine Aufbau einer erfindungsgemäßen Heizbaugruppe 1 mit Bezug auf die Fig. 1 - 3 und die darin dargestellte beispielhafte Ausführungsform beschrieben.First, the general structure of a heating assembly 1 according to the invention with reference to Fig. 1-3 and the exemplary embodiment illustrated therein.

Die Heizbaugruppe 1 umfasst ein Trägerelement 2, an dem ein Umlenkmittel 3, zwei Temperatursensoren 4 und mehrere Heizelemente 5 an der Seite angebracht sind, die im Betrieb der Heizbaugruppe 1 einem Heißluftstrom 6 zugewandt ist.The heating module 1 comprises a carrier element 2, to which a deflecting means 3, two temperature sensors 4 and a plurality of heating elements 5 are mounted on the side, which faces a hot air stream 6 during operation of the heating assembly 1.

Die Heizelemente 5 sind in einem Gehäuserahmen 7 angeordnet, der am Trägerelement 2 befestigt ist und an dem mehrere Isolierelemente 7' angebracht sind. Der Gehäuserahmen 7 weist dem Heißluftstrom 6 entgegengerichtet mehrere Strömungsleitmittel 8 auf.The heating elements 5 are arranged in a housing frame 7, which is fixed to the carrier element 2 and to which a plurality of insulating elements 7 'are mounted. The housing frame 7 has opposite to the hot air stream 6 on several Strömungsleitmittel 8.

Im Betrieb der Heizbaugruppe 1 trifft der Heißluftstrom 6 in einer Einströmrichtung E auf die Strömungsleitmittel 8 des Gehäuserahmens 7 auf. Strömungsleitflächen 9 der Strömungsleitmittel 8 sind einströmseitig in der Einströmrichtung E und durchströmseitig in einer Durchströmrichtung D ausgerichtet. Durch die Strömungsleitflächen 9 der Strömungsleitmittel 8 wird der Heißluftstrom 6 von der Einströmrichtung E in die Durchströmrichtung D umgelenkt. Bei der beispielhaften Ausführungsform der erfindungsgemäßen Heizbaugruppe in den Fig. 1 - 3 trifft der Heißluftstrom 6 schräg auf die Heizbaugruppe 1. Daher sind die Strömungsleitmittel 8 am Gehäuserahmen 7 in den Fig. 1 - 3 ebenfalls schräg zum Gehäuserahmen 7 ausgerichtet. Bei einer anders gerichteten Einströmrichtung E wird der Winkel der Strömungsleitmittel 8 zum Gehäuserahmen 7 entsprechend angepasst.During operation of the heating assembly 1, the hot air flow 6 impinges on the flow guiding means 8 of the housing frame 7 in an inflow direction E. Flow guide 9 of the flow guide 8 are aligned upstream of the inflow E and the flow side in a flow direction D. Through the flow guide 9 of the flow guide 8, the hot air flow 6 is deflected from the inflow direction E in the flow direction D. In the exemplary embodiment of the invention Heating module in the Fig. 1-3 the hot air flow 6 meets obliquely on the heating assembly 1. Therefore, the flow guide 8 on the housing frame 7 in the Fig. 1-3 also aligned obliquely to the housing frame 7. In the case of a differently directed inflow direction E, the angle of the flow-guiding means 8 to the housing frame 7 is adapted accordingly.

Umgelenkt in die Durchströmungsrichtung D trifft der Heißluftstrom 6 auf die Heizelemente 5 und durchströmt bzw. umströmt diese. Dabei wird Wärmeenergie von den Heizelementen 5 an den Heißluftstrom 6 abgegeben und dieser erwärmt.Diverted in the direction of flow D, the hot air flow 6 hits the heating elements 5 and flows through or flows around them. In this case, heat energy is released from the heating elements 5 to the hot air stream 6 and this heated.

Bei der in den Fig. 1 - 3 dargestellten Ausführungsform wandeln die Heizelemente 5 elektrische Energie in Wärmeenergie um. Hierfür wird elektrische Energie über Anschlussleitungen 10 in die Heizelemente 5 eingeleitet. Die Heizelemente 5 umfassen jeweils eine Heizspirale 11, die sich aufgrund ihres elektrischen Widerstandes erwärmt, wenn elektrische Energie durch sie hindurchfließt. Die in den Fig. 1 - 3 dargestellte Ausführungsform umfasst zwei parallel zueinander angeordnete Heizelemente 5. Die Heizelemente 5 sind an einer Versorgungsseite 12 jeweils mit einer Anschlussleitung 10 elektrisch leitend verbunden, wie z.B. durch Löten oder eine Steckerverbindung. An der von der Versorgungsseite 12 gegenüberliegenden Seite sind die Heizspiralen 11 der beiden Heizelemente 5 , z.B. durch ein Kabel miteinander elektrisch leitend verbunden und somit in Reihe geschaltet. Im Betrieb der Heizbaugruppe 1 fließt elektrische Energie von der Versorgungsseite 12 durch die Heizspiralen 11 der beiden Heizelemente 5 hindurch und an der Versorgungsseite 12 wieder aus den Heizelementen 5 hinaus. Durch den elektrischen Widerstand erwärmen sich die Heizspiralen 11 und geben Wärmeenergie an den sie umströmenden Heißluftstrom 6 ab.In the in the Fig. 1-3 illustrated embodiment, the heating elements 5 convert electrical energy into heat energy. For this purpose, electrical energy is introduced via connecting lines 10 in the heating elements 5. The heating elements 5 each comprise a heating coil 11 which, due to its electrical resistance, heats up as electrical energy passes through it. The in the Fig. 1-3 illustrated embodiment comprises two mutually parallel heating elements 5. The heating elements 5 are electrically connected to a supply side 12 each having a connecting line 10, such as by soldering or a plug connection. At the opposite side of the supply side 12, the heating coils 11 of the two heating elements 5, for example, by a cable electrically connected to each other and thus connected in series. During operation of the heating assembly 1, electrical energy flows from the supply side 12 through the heating coils 11 of the two heating elements 5 and out of the heating elements 5 on the supply side 12. Due to the electrical resistance, the heating coils 11 heat and release heat energy to the hot air stream 6 flowing around them.

Um eine gute Stabilität der Heizelemente 5 zu gewährleisten und ein Vibrieren oder Schwingen der Heizelemente 5 zu vermeiden, sind die Heizspiralen 11 um Tragkörper 13 herumgewickelt. Ein Verfahren und eine Vorrichtung zur Herstellung solcher Heizelemente ist beispielsweise in der DE 26 15 013 C3 beschrieben. Durch den Tragkörper 13 sind die Heizelemente 5 stabil ausgestaltet und müssen nur an ihren Enden an den am Gehäuserahmen 7 angebrachten Isolierelementen 7' abgestützt werden. Weiterhin wird durch die Tragkörper 13 z.B. auch eine durchgebrannte Heizspirale 11 gehalten, die dadurch nicht auf die Heizspirale 11 des anderen Heizelementes 5 fallen und einen Kurzschluss verursachen kann.In order to ensure a good stability of the heating elements 5 and to avoid vibration or oscillation of the heating elements 5, the heating coils 11 are wound around support body 13. A method and an apparatus for producing such heating elements is for example in DE 26 15 013 C3 described. By the support body 13, the heating elements 5 are designed to be stable and must be supported only at their ends to the mounted on the housing frame 7 insulating 7 '. Furthermore, for example, a blown heating coil 11 is held by the support body 13, thereby not falling on the heating coil 11 of the other heating element 5 and may cause a short circuit.

In den Isolierelementen 7' sind Schlitze (nicht dargestellt) ausgestaltet, in denen die Heizelemente 5 eingesteckt sind. Die Heizelemente 5 sind dabei so angebracht, dass die flachen Tragkörper 13 im Gehäuserahmen 7 parallel zur Durchströmrichtung D ausgerichtet sind. Hierdurch wird ein besonders geringer Strömungswiderstand durch die Heizelemente 5 erreicht.In the insulating elements 7 'slots (not shown) are configured in which the heating elements 5 are inserted. The heating elements 5 are mounted so that the flat support body 13 are aligned in the housing frame 7 parallel to the flow direction D. As a result, a particularly low flow resistance is achieved by the heating elements 5.

Der Gehäuserahmen 7 ist in den in den Fig. 1 - 3 dargestellten Ausführungsform als ein gestanztes und gekantetes Metallblechteil ausgestaltet, an dem an der Innenseite die Isolierelemente 7' angebracht sind. Die Isolierelemente 7' sind aus elektrisch und thermisch isolierendem Material, wie z.B. Mikanit, hergestellt. Hierdurch ist der Gehäuserahmen 7 zu den Heizelementen 5 elektrisch und zum Heißluftstrom 6 thermisch isoliert. Der Gehäuserahmen 7 ist z.B. durch Punktschweißen am Trägerelement angebracht ist. Alternativ können der Gehäuserahmen 7 und das Trägerelement 2 auch genietet, geklebt oder verschraubt werden.The housing frame 7 is in the in the Fig. 1-3 illustrated embodiment designed as a stamped and folded sheet metal part, on which on the inside of the insulating 7 'are mounted. The insulating elements 7 'are made of electrically and thermally insulating material, such as micanite. As a result, the housing frame 7 is electrically insulated from the heating elements 5 and thermally to the hot air stream 6. The housing frame 7 is attached for example by spot welding on the support element. Alternatively, the housing frame 7 and the support member 2 can also be riveted, glued or screwed.

Der von den Heizelementen 5 erwärmte Heißluftstrom 6 trifft in der Durchströmrichtung D auf eine Umlenkfläche 14 des Umlenkmittels 3.The hot air stream 6 heated by the heating elements 5 strikes a deflection surface 14 of the deflection means 3 in the direction of flow D.

Die Umlenkfläche 14 des Umlenkmittels 3 ist so ausgerichtet, dass der Heißluftstrom 6, der in der Durchströmrichtung D auf die Umlenkfläche 14 trifft, in Richtung einer Ausströmrichtung A umgelenkt wird. Dabei ist der Winkel α der Umlenkfläche 14 zur Durchströmrichtung D kleiner als der Winkel der Durchströmrichtung D zur Ausströmrichtung A. Bei der in den Fig. 1 bis 3 beispielhaft dargestellten Ausführungsform ist der Winkel α der Umlenkfläche 14 zur Durchströmrichtung D im Wesentlich halb so groß wie der Winkel der Durchströmrichtung D zur Ausströmrichtung A. Im Betrieb der Heizbaugruppe 1 befindet sich in der Ausströmrichtung A vorteilhafterweise die Wäschetrommel des Wäschetrockners. Somit wird der Heißluftstrom 6 durch die Umlenkfläche 14 in Richtung der zu trocknenden Wäsche gelenkt.The deflection surface 14 of the deflecting means 3 is aligned such that the hot air flow 6, which strikes the deflection surface 14 in the flow direction D, is deflected in the direction of an outflow direction A. In this case, the angle α of the deflection surface 14 to the flow direction D is smaller than the angle of the flow direction D to the outflow direction A. When in the Fig. 1 to 3 illustrated embodiment, the angle α of the deflection surface 14 to the flow direction D is substantially half as large as the angle of the flow direction D to the outflow A. In operation of the heating assembly 1 is located in the outflow A advantageously the laundry drum of the tumble dryer. Thus, the hot air stream 6 is directed by the deflection surface 14 in the direction of the laundry to be dried.

In der Umlenkfläche 14 des Umlenkmittels 3 sind bei der in den Fig. 1 - 3 dargestellten Ausführungsform zwei Temperatursensoren 4 angeordnet.In the deflection surface 14 of the deflection 3 are in the in the Fig. 1-3 illustrated embodiment, two temperature sensors 4 are arranged.

Fig. 1b zeigt, dass die Temperatursensoren 4 in der Umlenkfläche 14 des Umlenkmittels 3 in einen Kernbereich 15 des Heißluftstroms 6 hineinragend ausgestaltet sind. Wie in Fig. 1 b dargestellt hat der Heißluftstrom 6 einen Kernbereich 15, der von einem Mantelbereich 16 umgeben ist. Die Temperatur im Mantelbereich 16 des Heißluftstroms 6 ist niedriger als im Kernbereich 15, da der Mantelbereich 16 durch die Umgebungsluft und das Trägerelement 2 abgekühlt wird und weniger durch die Heizelemente 5 erwärmt wird, durch die er nicht hindurch-, sondern nur vorbeiströmt. Daher ist die Höchsttemperatur des Heißluftstroms und ein Überhitzen der Heizelemente 5 anhand der Temperatur des Kernbereichs 15 genauer erkennbar als anhand der Temperatur des Mantelbereichs 16. Aus diesem Grund sind die Temperatursensoren 4 so angeordnet, dass sie die Temperatur des Heißluftstroms 6 in seinem Kernbereich 15 messen. Durch die bessere Temperaturerfassung ist eine genaue Temperatursteuerung des Heißluftstroms 6 möglich, die beim Trocknen empfindlicher Wäsche besonders wichtig ist. Fig. 1b shows that the temperature sensors 4 in the deflection surface 14 of the deflection means 3 are configured projecting into a core region 15 of the hot air flow 6. As in Fig. 1 b the hot air stream 6 has a core region 15 which is surrounded by a jacket region 16. The temperature in the jacket region 16 of the hot air stream 6 is lower than in the core region 15, since the jacket region 16 is cooled by the ambient air and the carrier element 2 and is heated less by the heating elements 5, through which it does not pass, but only flows past. Therefore, the maximum temperature of the hot air flow and the overheating of the heating elements 5 are more clearly understood from the temperature of the core portion 15 than the temperature of the shell portion 16. For this reason, the temperature sensors 4 are arranged to measure the temperature of the hot air flow 6 in its core portion 15 , Due to the better temperature detection, a precise temperature control of the hot air flow 6 is possible, which is particularly important when drying sensitive laundry.

Wie in Fig. 1a dargestellt, sind die beiden Temperatursensoren 4 stromabwärts der Hälften der Heizelemente 5 angeordnet, die an ihrer Versorgungsseite 12 liegen. Durch Metallteile, die im Betrieb des Wäschetrockners in die Heizbaugruppe 1 geraten können, kann ein Kurzschluss zwischen den Heizspiralen 11 der Heizelemente 5 verursacht werden. Durch den Kurzschluss wird die effektive Länge der Heizspiralen 11, durch die im Betrieb elektrische Energie hindurchfließt und sie erwärmt, und der elektrische Widerstand der Heizelemente 5 reduziert. Die Heizelemente 5 heizen nur noch zwischen der Versorgungsseite 12 und der Kurzschlussstelle, dort aber unzulässig stark, weil die eingeleitete Energiemenge unverändert bleibt. Jedoch sind die Temperatursensoren 4 stromabwärts der Heizelemente 5 in einem Bereich des Heißluftstroms 6 angeordnet, der näher an der Versorgungsseite 12 der Heizelemente 5 liegt. Dadurch wird die unzulässige Erwärmung der Heizelemente 5 durch eine überhöhte Temperatur des Heißluftstroms 6 besonders schnell erkannt. Die Heizelemente 5 können rechtzeitig abgeschaltet werden, bevor sich die Rückwand des Wäschetrockners oder die Wäsche in der Wäschetrommel unzulässig stark erhitzen.As in Fig. 1a shown, the two temperature sensors 4 are arranged downstream of the halves of the heating elements 5, which lie on its supply side 12. By metal parts that may fall into the heating assembly 1 during operation of the tumble dryer, a short circuit between the heating coils 11 of the heating elements 5 can be caused. The short circuit reduces the effective length of the heating coils 11, through which electric energy flows during operation and heats them, and the electrical resistance of the heating elements 5 is reduced. The heating elements 5 heat only between the supply side 12 and the short circuit point, but there inadmissibly strong, because the introduced amount of energy remains unchanged. However, the temperature sensors 4 are arranged downstream of the heating elements 5 in a region of the hot air flow 6, which is closer to the supply side 12 of the heating elements 5. As a result, the inadmissible heating of the heating elements 5 is detected particularly quickly by an excessive temperature of the hot air flow 6. The heating elements 5 can be switched off in good time before the rear wall of the tumble dryer or the laundry in the laundry drum heat excessively high.

Insbesondere ist bei der in den Fig. 1 - 3 beispielhaft dargestellten erfindungsgemäßen Heizbaugruppe 1 wenigstens einer der Temperatursensor 4 an einer Stelle angeordnet, die im Wesentlichen auf einer an der Versorgungsseite 12 der Heizelemente 5 verlaufenden Streichlinie liegt. Die Streichlinie ist dabei die Ortskurve aller Teilchen, die im Laufe der Zeit an der Versorgungsseite der Heizelemente vorbeiströmen. Die Temperatur dieser Teilchen erhöht sich bei einem Kurzschluss der Heizelemente und wird durch die Temperatursensoren überwacht. Die Temperatursensoren sind in einem Bereich angeordnet, der in der in Durchströmrichtung liegenden Projektion des Bereichs an der Versorgungsseite der Heizelemente liegt.In particular, in the in the Fig. 1-3 At least one of the temperature sensor 4, which is illustrated by way of example, according to the invention, is arranged at a location which essentially runs on a supply side 12 of the heating elements 5 Streichlinie lies. The scratch line is the locus of all particles that flow past the supply side of the heating elements over time. The temperature of these particles increases with a short circuit of the heating elements and is monitored by the temperature sensors. The temperature sensors are arranged in an area which lies in the direction of flow in the projection of the area on the supply side of the heating elements.

Die Temperatursensoren 4 sind in Öffnungen (nicht dargestellt) in der Umlenkfläche 14 des Umlenkmittels 3 angeordnet. Die Temperatursensoren 4 sind dabei durch eine mechanisch lösbare oder unlösbare Verbindung, z.B. durch Schweißpunkte 17, mit dem Umlenkmittel 3 verbunden. Alternativ können die Temperatursensoren 4 z.B. auch durch Nieten, Kleben, Clinchen oder durch eine wiederholt lösbare Schraubverbindung mit dem Umlenkmittel 3 verbunden sein.The temperature sensors 4 are arranged in openings (not shown) in the deflection surface 14 of the deflection means 3. The temperature sensors 4 are characterized by a mechanically detachable or insoluble compound, e.g. by welding points 17, connected to the deflection means 3. Alternatively, the temperature sensors 4 may be e.g. be connected by riveting, gluing, clinching or by a repeatedly detachable screw with the deflection 3.

Das Umlenkmittel 3 ist am Trägerelement 2 angebracht. Bei der in den Fig. 1 - 3 dargestellten Ausführungsform sind das Trägerelement 2 und das Umlenkmittel 3 einstückig als ein tiefgezogenes Metallblech ausgestaltet. Hierdurch können das Trägerelement 2 und das Umlenkmittel 3 in einem Fertigungsschritt hergestellt werden, wodurch sich die Summe der Einzelteile und die Herstellungskosten der Heizbaugruppe 1 reduzieren.The deflection means 3 is attached to the carrier element 2. In the in the Fig. 1-3 illustrated embodiment, the support member 2 and the deflection means 3 are integrally formed as a deep-drawn sheet metal. As a result, the carrier element 2 and the deflection means 3 can be produced in one production step, thereby reducing the sum of the individual parts and the manufacturing costs of the heating assembly 1.

Am Rand des Trägerelements 2 ist eine Dichtung 18 angeordnet, durch die die Heizbaugruppe 1 gasdicht an einem Strömungskanal eines Wäschetrockners anbringbar ist. Weiterhin ist im Tragelement 2 eine abgedichtete Öffnung 19 angeordnet, durch die die Anschlussleitungen 10 der Heizelemente 5 gasdicht durch das Trägerelement 2 hindurchgeführt sind. Durch die Dichtung 18 und die abgedichtete Öffnung 19 wird sichergestellt, dass der Heißluftstrom 6 nicht teilweise aus dem Strömungskanal des Wäschetrockners austritt.At the edge of the support member 2, a seal 18 is arranged, through which the heating assembly 1 is gas-tight attached to a flow channel of a tumble dryer. Furthermore, a sealed opening 19 is arranged in the support member 2, through which the connection lines 10 of the heating elements 5 are passed through the carrier element 2 gas-tight. By the seal 18 and the sealed opening 19 it is ensured that the hot air stream 6 does not escape in part from the flow channel of the tumble dryer.

Wie in Fig. 2 dargestellt, ist auf der dem Heißluftstrom abgewandten Seite der Heizbaugruppe 1 eine von der Umlenkfläche 14 gebildete Aussparung 20 ausgeformt. In der Aussparung 20 befinden sich die nach hinten über die Umlenkfläche 14 hinausstehenden Teile der Temperatursensoren 4. Dabei ist die Aussparung 20 in den Strömungskanal 29 gewölbt. Die Heizbaugruppe 1 ist so ausgeformt, dass sie auf der dem Heißluftstrom 6 abgewandten Seite in einem Querschnitt quer zur Rückwand des Wäschetrockners eine im Wesentlichen plane Außenkontur hat. Hierdurch wird die Dicke D der Heizbaugruppe 1 minimiert, was beim Einbau in den Wäschetrockner besonders vorteilhaft ist, da für die Heizbaugruppe 1 im Wäschetrockner häufig nur wenig Bauraum zur Verfügung steht. Die Temperatursensoren 4 sind in der Aussparung 20 bei geöffneter Rückwand 27 des Wäschetrockners 26 wenigstens von ihrer Rückseite her von außen zugänglich ausgestaltet.As in Fig. 2 shown, on the side facing away from the hot air flow side of the heating assembly 1, a recess 20 formed by the deflection surface 14 is formed. In the recess 20 are the rearwardly beyond the deflection surface 14 protruding parts of the temperature sensors 4. In this case, the recess 20 is curved in the flow channel 29. The heating assembly 1 is formed so that it is on the side facing away from the hot air stream 6 in a cross section transverse to the rear wall of the tumble dryer has a substantially planar outer contour. As a result, the thickness D of the heating assembly 1 is minimized, which is particularly advantageous when installed in the tumble dryer, since there is often little space available for the heating assembly 1 in the tumble dryer. The temperature sensors 4 are configured in the recess 20 with the rear wall 27 of the tumble dryer 26 open at least accessible from the rear side from the outside.

Die bei der in den Fig. 1 - 3 dargestellte Ausführungsform verwendeten Temperatursensoren 4 sind als Thermostate ausgestaltet. Thermostate sind kleine Schalteinheiten, die ein elektrisches Signal temperaturabhängig schalten. Bei der Heizbaugruppe 1 in den Fig. 1 - 3 schalten die Thermostate 4 die Heizelemente 5 aus, sobald eine vorbestimmte Grenztemperatur überschritten wird. Hierfür können die Thermostate 4 beispielsweise ein Bimetallelement enthalten, das den Energiefluss zu den Heizelementen 5 temperaturabhängig schaltet. Hierdurch kann auf Steuerleitungen zur Steuereinheit des Wäschetrockners verzichtet werden, da die Heizbaugruppe 1 die Temperatur der Heizelemente 5 selbständig überwacht und beim Überschreiten der Grenztemperatur selbständig abschaltet.The at the in the Fig. 1-3 illustrated embodiment, temperature sensors 4 are designed as thermostats. Thermostats are small switching units that switch an electrical signal depending on temperature. When the heating module 1 in the Fig. 1-3 the thermostats 4 turn off the heating elements 5 as soon as a predetermined limit temperature is exceeded. For this purpose, the thermostats 4 may for example contain a bimetallic element that switches the energy flow to the heating elements 5 depending on temperature. This makes it possible to dispense with control lines to the control unit of the tumble dryer, since the heating assembly 1 monitors the temperature of the heating elements 5 independently and automatically shuts off when the limit temperature is exceeded.

Um die Thermostate 4 besonders leicht anschließen zu können, sind sie mit zwei genormten Anschlusskontakten (nicht dargestellt) versehen. Die Anschlussleitungen 10 der Heizelemente 5 werden mit Steckerelementen 21 auf die Anschlusskontakte gesteckt. Am zweiten Anschlusskontakt (nicht dargestellt) ist jedes Thermostat 4 durch eine weitere Anschlussleitung 10' mit einem genormten Steckverbinder 22 verbunden.In order to be able to connect the thermostats 4 particularly easily, they are provided with two standardized connection contacts (not shown). The connection lines 10 of the heating elements 5 are plugged with connector elements 21 on the connection contacts. At the second connection contact (not shown), each thermostat 4 is connected by a further connecting line 10 'with a standardized connector 22.

Durch den Steckverbinder 22 wird die Heizbaugruppe 1 im eingebauten Zustand an eine Energiequelle angeschlossen. Der Steckverbinder 22 ist an seiner Rückseite mit einem Rastmittel 23 ausgestaltet. Mit dem Rastmittel 23 ist der Steckverbinder 22 an einem gekröpften Flanschabschnitt 24 des Trägerelements 2 angebracht. Um den Steckverbinder 22 in einer Einsteckrichtung S, in der ein Gegenstecker bei der Montage des Wäschetrockners in den Steckverbinder 22 eingesteckt wird, abzustützen, ist der gekröpfte Flanschabschnitt 24 des Trägerelements 2 mit Verstärkungen 25 versehen. Wie in Fig. 3 dargestellt, ist der Steckverbinder 22 durch den gekröpften Flanschabschnitt 24 außerhalb des Strömungskanals des Wäschetrockners anordenbar.By the connector 22, the heating assembly 1 is connected in the installed state to a power source. The connector 22 is configured on its rear side with a latching means 23. With the locking means 23 of the connector 22 is attached to a cranked flange portion 24 of the support member 2. In order to support the plug connector 22 in a plug-in direction S, in which a mating plug is plugged into the plug connector 22 during the installation of the tumble dryer, the cranked flange section 24 of the carrier element 2 is provided with reinforcements 25. As in Fig. 3 shown, the connector 22 can be arranged by the cranked flange portion 24 outside the flow channel of the tumble dryer.

Fig. 4 zeigt die Heizbaugruppe 1 der Fig. 1 - 3, die in einen Wäschetrockner 26 eingebaut ist. Der Übersichtlichkeit halber ist der Wäschetrockner 26 ohne Deckel und mit geöffneter Rückwand 27 dargestellt. Fig. 4 shows the heating assembly 1 of Fig. 1-3 , which is installed in a clothes dryer 26. For the sake of clarity, the tumble dryer 26 is shown without a lid and with the rear wall 27 open.

Der Wäschetrockner 26 umfasst eine Wäschetrommel 28, in der sich im Betrieb feuchte Wäsche befindet. Von einer Luftzufuhr (nicht dargestellt) wird der Heißluftstrom 6 durch einen Strömungskanal 29 in die Wäschetrommel 28 zum Trocknen der feuchten Wäsche hineingeleitet. Der Strömungskanal 29 hat eine Öffnung 30, in welche die Heizbaugruppe 1 eingesetzt ist. Durch die Heizbaugruppe 1 wird der Heißluftstrom 6 im Strömungskanal 29 beheizt. An der Öffnung 30 des Strömungskanals 29 sind Rasten 31 angeordnet, die in Gegenrasten 32 der Heizbaugruppe 1 einrastbar sind. Dadurch kann die Heizbaugruppe 1 wiederholt lösbar und zeitsparend am Strömungskanal 29 befestigt werden. Alternativ können die Rasten 31 und Gegenrasten 32 auch eine unlösbare Verbindung herstellen oder durch eine Schraub- oder Nietverbindung ersetzt sein.The tumble dryer 26 comprises a laundry drum 28 in which wet laundry is in operation. From an air supply (not shown) of the hot air stream 6 is passed through a flow channel 29 in the laundry drum 28 for drying the wet laundry. The flow channel 29 has an opening 30 into which the heating assembly 1 is inserted. By the heating assembly 1, the hot air stream 6 is heated in the flow channel 29. At the opening 30 of the flow channel 29 notches 31 are arranged, which can be latched into counter-detents 32 of the heating assembly 1. As a result, the heating assembly 1 can be fastened to the flow channel 29 repeatedly releasably and in a time-saving manner. Alternatively, the detents 31 and mating detents 32 can also make a permanent connection or be replaced by a screw or rivet connection.

Nachdem bei der Montage des Wäschetrockners die vormontierte Heizbaugruppe 1 in den Strömungskanal 29 eingesetzt ist, wird ein Gegenstecker 33 in den Steckverbinder 22 eingesteckt, um die Heizbaugruppe 1 an eine Energiequelle (nicht dargestellt) anzuschließen. Da der Flanschabschnitt 24 der Heizbaugruppe 1 gekröpft ist, ist der Steckverbinder 22 vorteilhafterweise im freien Bauraum neben dem Strömungskanal 29 angeordnet. Die Heizbaugruppe 1 bildet im eingebauten Zustand einen Abschnitt des Strömungskanals 29 aus, wodurch sie besonders einfach und schnell montierbar ist.After the preassembled heater assembly 1 is inserted into the flow channel 29 during assembly of the clothes dryer, a mating connector 33 is inserted into the connector 22 to connect the heater assembly 1 to a power source (not shown). Since the flange portion 24 of the heating assembly 1 is cranked, the connector 22 is advantageously arranged in the free space next to the flow channel 29. The heating assembly 1 forms a portion of the flow channel 29 in the installed state, whereby it is particularly simple and quick to install.

Durch die besonders flache Bauform der Heizbaugruppe 1 und dadurch, dass die Heizbaugruppe 1 in den Strömungskanal 29 eingesetzt ist, wird ein vorgeschriebener Abstand zwischen allen innenliegenden Teilen des Wäschetrockners 26 und der Rückwand 27 eingehalten. Dadurch ist sichergestellt, dass die Rückwand 27 des Wäschetrockners 26 im Betrieb nicht zu heiß wird und keine Gefahr für Leib und Leben eines Bedieners besteht.Due to the particularly flat design of the heating assembly 1 and the fact that the heating assembly 1 is inserted into the flow channel 29, a prescribed distance between all internal parts of the clothes dryer 26 and the rear wall 27 is maintained. This ensures that the rear wall 27 of the tumble dryer 26 does not become too hot during operation and there is no risk to the life and limb of an operator.

Claims (20)

  1. A heating assembly (1) for heating a hot air flow (6) flowing in a flow channel (29) of a tumble dryer (26), the heating assembly (1) being designed to be insertable into the flow channel (29), and comprising at least one heating element (5) disposed such that the hot air flow (6) can flow around it in a flow through direction (D), at least one deflection surface (14) deflecting the hot air flow (6) of the flow through direction (D) towards an outflow direction (A), and at least one temperature sensor (4) which can record the temperature of the hot air flow (6) and disposed on the deflection surface (14) and projecting into a core region (15) of the hot air flow (6), characterised in that the deflection surface (14) forms on the side facing away from the hot air flow (6) a recess (20) which is curved in the fitted stated in the flow channel (29).
  2. The heating assembly (1) according to Claim 1, characterised in that the deflection surface (14) deflecting the hot air flow (6) from a flow through direction (D) into an outflow direction (A) and projecting into the latter is oriented at an angle (α) in relation to the flow through direction (D) which is smaller than the angle (β) of the flow through direction (D) in relation to the outflow direction (A).
  3. The heating assembly (1) according to Claim 2, characterised in that the deflection surface (14) projects into the core region (15) of the hot air flow (6).
  4. The heating assembly (1) according to either of Claims 2 or 3, characterised in that the angle (α) of the deflection surface (14) in relation to the flow through direction (D) is half as large as the angle (β) of the flow through direction (D) in relation to the outflow direction (A).
  5. The heating assembly (1) according to any of the claims specified above, characterised in that the at least one temperature sensor (4) is in the form of a thermostat (4) by means of which the supply of energy to the at least one heating element (5) can be controlled temperature-dependently.
  6. The heating assembly (1) according to any of the claims specified above, characterised in that the at least one temperature sensor (4) is accommodated in the recess (20) on the side facing away from the hot air flow (6).
  7. The heating assembly (1) according to any of the claims specified above, characterised in that the at least one temperature sensor (4) in the recess (20) is disposed such as to be accessible from the outside, at least from its rear side, when the rear wall (27) of the tumble dryer (26) is open.
  8. The heating assembly (1) according to any of the claims specified above, characterised in that the heating assembly (1) has a substantially planar outer contour on the side facing away from the hot air flow (6) in a cross-section lateral to the rear wall (27) of the tumble dryer (26).
  9. The heating assembly (1) according to any of the claims specified above, characterised in that the heating assembly (1) is provided on the inflow side with at least one flow guide surface (9), the at least one flow guide surface (9) being oriented on the inflow side in the inflow direction (E) and on the flow through side in the flow through direction (D).
  10. The heating assembly (1) according to any of the claims specified above, characterised in that a plug-in connector (22) connectable to an energy source is attached to an offset flange section (24) of the support element (2) disposable outside of the flow channel (29).
  11. The heating assembly (1) according to any of the claims specified above, characterised in that the heating assembly (1) has a sealing means (18) with which the heating assembly can be attached gas-tight to the flow channel (29) of the tumble dryer (26).
  12. The heating assembly (1) according to any of the claims specified above, characterised in that the heating assembly (1) has at least one sealed opening (19) through which at least one connection line (10) of the at least one heating element (5) extends.
  13. The heating assembly (1) according to any of the claims specified above, characterised in that the heating assembly (1) is formed in one piece such that it can be inserted into the flow channel (29) in preassembled state.
  14. The heating assembly (1) according to any of the claims specified above, during operation electrical energy being conveyed on a supply side (12) through at least two heating elements (5) disposed parallel to one another and connected in series, characterised in that the at least one temperature sensor (4) lies downstream of the heating elements (5) in the region of the hot air flow (6) which lies closer to the supply side (12) of the heating elements (5).
  15. The heating assembly (1) according to Claim 14, characterised in that the at least one temperature sensor (4) is disposed downstream of the halves of the heating elements (5) on the supply side.
  16. The heating assembly (1) according to Claim 14 or 15, characterised in that the at least one temperature sensor (4) is disposed at a point which substantially lies on a streakline extending along the supply side (12) of the heating elements (5).
  17. A tumble dryer (26) for drying damp washing with a hot air flow (6), the tumbler dryer (26) being designed with an air feed and with a flow channel (29) through which the hot air flow (6) can flow, characterised in that the tumble dryer (26) comprises a heating assembly (1) according to any of the claims specified above.
  18. The tumble dryer (26) according to Claim 17, characterised in that the heating assembly (1) forms, at least in sections, the flow channel (29) of the tumble dryer (26).
  19. The tumble dryer (26) according to Claim 17 or 18, characterised in that the heating assembly (1) can be attached releaseably or non-releaseably to the flow channel (29) with at least one securing means (31).
  20. A method for assembling a tumble dryer (26) by means of which, during operation, a hot air flow (6) for warming up damp washing can be heated, comprising the following procedural steps:
    pre-assembling a deflection means (3) which has a deflection surface (14), at least one heating element (5) and at least one temperature sensor (4) to form a heating assembly (1), the temperature sensor (4) being disposed on the deflection surface (14) and a curved recess (20) in the flow channel being formed by the deflection surface (14),
    disposing the heating assembly (1) in an opening (30) of the flow channel (29) through which the hot air flow (6) flows during operation of the tumble dryer (26), the temperature sensor (4) being disposed projecting inwards in a core region (15) of the hot air flow (6).
EP04011008A 2004-05-07 2004-05-07 Heating subassembly of laundry dryer Expired - Lifetime EP1593772B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE502004010348T DE502004010348D1 (en) 2004-05-07 2004-05-07 Heating assembly for a tumble dryer
EP04011008A EP1593772B1 (en) 2004-05-07 2004-05-07 Heating subassembly of laundry dryer
AT04011008T ATE448351T1 (en) 2004-05-07 2004-05-07 HEATING ASSEMBLY FOR A CLOTHES DRYER
US11/123,888 US7425688B2 (en) 2004-05-07 2005-05-06 Heating assembly for a tumble dryer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04011008A EP1593772B1 (en) 2004-05-07 2004-05-07 Heating subassembly of laundry dryer

Publications (2)

Publication Number Publication Date
EP1593772A1 EP1593772A1 (en) 2005-11-09
EP1593772B1 true EP1593772B1 (en) 2009-11-11

Family

ID=34924922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04011008A Expired - Lifetime EP1593772B1 (en) 2004-05-07 2004-05-07 Heating subassembly of laundry dryer

Country Status (4)

Country Link
US (1) US7425688B2 (en)
EP (1) EP1593772B1 (en)
AT (1) ATE448351T1 (en)
DE (1) DE502004010348D1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50302587D1 (en) * 2003-12-02 2006-05-04 Dbk David & Baader Gmbh Cover for a tumble dryer and method of assembling it
DE102005013052A1 (en) * 2005-03-18 2006-09-21 BSH Bosch und Siemens Hausgeräte GmbH Clothes drying machine
DE602007002712D1 (en) * 2007-07-31 2009-11-19 Dbk David & Baader Gmbh Garment drying device with air passage element with insulated area and heating unit and outer cover for it
US20110062145A1 (en) * 2007-09-10 2011-03-17 Amo Co., Ltd. Drying heater, heating unit for drying laundry using the same, drying control system and control method thereof
WO2011080233A1 (en) * 2009-12-30 2011-07-07 Arcelik Anonim Sirketi A laundry dryer comprising a heater casing
US10288301B2 (en) * 2015-04-08 2019-05-14 Haier Us Appliance Solutions, Inc. Thermostat hood for a heating system of an air conditioner unit
EP3190228A1 (en) * 2016-01-05 2017-07-12 DBK David + Baader GmbH Heating device for tumble dryer and tumble dryer
US9771677B1 (en) * 2016-03-09 2017-09-26 Haier Us Appliance Solutions, Inc. Dryer appliances with improved heaters
CN109989218B (en) * 2017-12-29 2022-04-19 青岛海尔洗涤电器有限公司 Control method for laundry treating apparatus

Family Cites Families (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH240775A (en) 1944-05-01 1946-01-31 Rotz Albert Von Laundry drying machine.
US2748496A (en) 1952-10-24 1956-06-05 Thor Corp Clothes dryer
US2936527A (en) 1957-02-27 1960-05-17 Easy Washing Machine Company L Clothes drier
US3039285A (en) 1960-01-27 1962-06-19 Lovell Mfg Co Imperforate drum combination clothes washer and dryer
CH395863A (en) 1963-06-13 1965-07-15 Zuppiger Paul Variable speed load moving device
US3293769A (en) 1964-06-18 1966-12-27 Whirlpool Co Adjustable cool-down control for dryer cycle
DE1585978A1 (en) 1964-07-31 1969-11-20 Siemens Elektrogeraete Gmbh Tumble dryer working according to the drum principle
US3449838A (en) 1966-09-09 1969-06-17 Chancellor Chair Co Combination wall mounted dryer and heater
US3409994A (en) * 1966-09-15 1968-11-12 Gen Motors Corp Heating control system for clothes dryer
US3545235A (en) 1969-02-11 1970-12-08 Gen Motors Corp Combination clothes washer and dryer
US3799387A (en) 1971-11-18 1974-03-26 Whirlpool Co Electric heating unit for clothes dryers
DE2263260C3 (en) 1972-12-23 1982-01-28 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Radiators for fan-operated heaters, especially small radiators for hair dryers or the like.
GB1482520A (en) 1973-07-30 1977-08-10 Ti Domestic Appliances Ltd Tumbler dryers
JPS565560B2 (en) 1973-12-26 1981-02-05
US4019023A (en) 1975-06-16 1977-04-19 Whirlpool Corporation Electrically heated dryer
DE2615013C3 (en) 1976-04-07 1981-08-20 David & Baader-DBK-Spezialfabrik elektrischer Apparate und Heizwiderstände GmbH, 6744 Kandel Method for producing an electric heater for gaseous flowing media and device for carrying out the method
US4063590A (en) 1976-10-22 1977-12-20 Mcconnell Christopher L Preheater for clothes dryer
US4207686A (en) 1977-12-19 1980-06-17 Fedders Corporation Air heater arrangement for a clothes dryer
JPS6043813B2 (en) 1978-11-22 1985-09-30 新日本製鐵株式会社 Thick wall UO steel pipe forming method
JPS56130192A (en) 1980-03-17 1981-10-12 Hitachi Ltd Drier
DE3340313A1 (en) * 1983-11-08 1985-05-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Domestic laundry drier
DE3419743C2 (en) 1984-05-26 1993-10-21 Miele & Cie Tumble dryer for laundry
JPS61115598A (en) 1984-11-09 1986-06-03 株式会社日立製作所 Waste thread collector of clothing dryer
JPS6229788A (en) 1985-07-30 1987-02-07 Mitsubishi Electric Corp Multi-cylinder rotary type compressor
US4653200A (en) 1986-03-05 1987-03-31 Whirlpool Corporation Lint screen shield assembly for a dryer
US4700495A (en) * 1986-09-22 1987-10-20 Whirlpool Corporation Heater assembly and mounting arrangement for a dryer
US4857707A (en) 1988-04-11 1989-08-15 Whirpool Corporation Flexible frame heater element for dryer
DE3818403A1 (en) 1988-05-31 1989-12-07 Henry Schwitters SHOWER CABIN
IT1225119B (en) 1988-07-25 1990-11-02 Zanussi A Spa Industrie HEATING DEVICE FOR WASHING MACHINES AND / OR LINEN DRYERS
CA1293762C (en) 1988-12-01 1991-12-31 Robert Maurice St. Louis Heater coil mounting for a dryer
DE4139588A1 (en) 1990-12-15 1992-06-17 Miele & Cie Washing machine etc. in modular fashion - in assemblies, with housing parts from support frame for operating components being prechecked
US5161314A (en) 1991-06-17 1992-11-10 American Dryer Corporation Apparatus and method for controlling a drying cool-down cycle of a clothes dryer
US5134270A (en) 1991-10-08 1992-07-28 Emerson Electric Co. Heater assembly for use in clothes dryers
IT1259217B (en) 1992-06-30 1996-03-11 Zanussi Elettrodomestici PERFECTED DRYER
DE4327916A1 (en) 1992-08-21 1994-02-24 Miele & Cie Drum washing machine can be operated and tested without outer housing parts - comprises functional assemblies and components mounted in frame
CA2091940C (en) 1993-03-18 2000-05-02 Robert St. Louis Dual element electrical clothes dryer with single element interrupt circuit
US5560120A (en) 1995-04-20 1996-10-01 Whirlpool Corporation Lint handling system
US6108940A (en) 1998-03-31 2000-08-29 Camco Inc. Heater housing for an electric clothes dryer
DE19842644A1 (en) 1998-09-17 2000-03-23 Bsh Bosch Siemens Hausgeraete Domestic laundry drying appliance has sensors to monitor the air flow temps to vary the power supply to the air heater to control its heating action
JP2000317200A (en) 1999-05-06 2000-11-21 Hitachi Ltd Clothes drier
US6519871B2 (en) 2001-05-25 2003-02-18 Maytag Corporation Self programming clothes dryer system
ITPN20020086A1 (en) 2002-11-07 2004-05-08 Irca Spa CONDUCT WITH PERFECTED ELECTRIC RESISTANCE E
DE50302587D1 (en) 2003-12-02 2006-05-04 Dbk David & Baader Gmbh Cover for a tumble dryer and method of assembling it

Also Published As

Publication number Publication date
ATE448351T1 (en) 2009-11-15
EP1593772A1 (en) 2005-11-09
US20050252033A1 (en) 2005-11-17
DE502004010348D1 (en) 2009-12-24
US7425688B2 (en) 2008-09-16

Similar Documents

Publication Publication Date Title
EP1715259B1 (en) Heated pump with boiling protection
DE19964452B4 (en) Flow rate sensor
EP1593772B1 (en) Heating subassembly of laundry dryer
DE19750588A1 (en) Exhaust gas recirculation device for an internal combustion engine
EP3692559B1 (en) Electric power plug
WO2007020179A1 (en) Filter device comprising a heater
DE19811629A1 (en) Heat exchanger for heating vehicle cab
EP1538255B1 (en) Cover for a laundry dryer and process for its assembly
DE112013002131B4 (en) heater
DE19624493B4 (en) Temperature detection device and its application in a flowmeter of the thermal type
WO1997002516A1 (en) Heating appliance, in particular for heating a motor vehicle passenger compartment
DE602005005020T2 (en) Combined temperature sensor for a dryer
EP2407327A1 (en) Electric heating device, in particular additional motor vehicle heating and motor vehicle air conditioning device
DE102012013344B4 (en) heating block
DE102016110023A1 (en) Heating unit and tumble dryer
DE19925444C2 (en) Combination of heat exchanger with PTC heating register
DE3534754C2 (en)
DE3705630C2 (en) Heating device, in particular for motor vehicles
EP1593771A1 (en) Heating device for the hot air flow of a laundry drier
EP1081986B1 (en) Tubular heating element with NTC/PTC protection
DE10226081B4 (en) The heat exchanger assembly
DE19645179A1 (en) Vehicle auxiliary heating apparatus
WO2018099712A1 (en) Heat exchanger, in particular exhaust gas heat exchanger, for a motor vehicle
DE2743325C2 (en) Electric air heating system
DE102013021283B4 (en) water heater

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20041116

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GRUNEWALD, JEROME

Inventor name: FROHN, RALF

Inventor name: KOEHNE, JENS

Inventor name: LOESCH, ANDREAS

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 502004010348

Country of ref document: DE

Date of ref document: 20091224

Kind code of ref document: P

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100311

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20100324

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100211

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20100512

Year of fee payment: 7

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20100812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100212

BERE Be: lapsed

Owner name: DBK DAVID + BAADER G.M.B.H.

Effective date: 20100531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100507

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110507

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502004010348

Country of ref document: DE

Effective date: 20111201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110507

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100507

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100512

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091111

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111201