EP1593772A1 - Heating subassembly of laundry dryer - Google Patents

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

The invention relates to a heating assembly for heating one in a flow channel a tumble dryer flowing hot air stream, wherein the heating assembly in the Flow channel is configured usable and at least one heating element of the Hot air flow is arranged flow around in a flow direction, and at least a temperature sensor, by means of which the temperature of the hot air flow can be detected, includes.

Usually tumble dry laundry that is in a rotatable drum filled inside the tumble dryer, dried by a stream of hot air. The Hot air flow is from an air supply through the usually between the drum and a rear wall of the tumble dryer flow channel extending into the drum into and through the wet laundry. In the flow channel is a heating module 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. When a predetermined limit temperature is exceeded, the heating element switched off by the control unit of the clothes dryer. Such a temperature control allows drying of the laundry with a textile suitable Temperature. In addition, this is to prevent this, that the rear wall of the tumble dryer heated excessively, and thereby the reliability of the Tumble dryer is at risk.

However, in the known heating assemblies, the temperature measurement is inaccurate, so that it leads to overheating of the heating elements and thus to exceeding the for a gentle drying maximum permissible temperature and to an impermissible Heating the outer wall of the tumble dryer may come.

In view of this problem, the present invention is based on the object to provide a heating assembly, in which the temperature control performed more accurately can be.

According to the invention, this object is achieved in that the at least one temperature sensor is arranged projecting into a core region of the hot air flow.

This solution is structurally simple and allows a more accurate temperature control by a more exact temperature determination of the hot air flow.

During operation of the tumble dryer, the core area lying inside the hot air flow becomes heated more strongly by the heating element than the outer jacket region, the e.g. is cooled faster by the cold wall of the flow channel and / or flows only indirectly along the heating element. The only so far in the jacket area measured temperature of the hot air flow was therefore not for the temperature control relevant maximum temperature and not representative of the maximum temperature the hot air stream. With the solution according to the invention, the maximum temperature 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 become exposed to high temperatures, which can lead to their damage, nor heats the outside wall of the tumble dryer rises above the permissible temperatures.

One reason for an excessive temperature of the hot air flow, for example, too 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 is more quickly recognizable, because the temperature of the core flow immediately the temperature of the superheated Assumes heating element.

The heating assembly according to the invention can by different, independent, each be further developed for advantageous embodiments. To this Embodiments and the advantages associated with each of the embodiments is in The following is briefly mentioned.

Thus, in an advantageous embodiment, the hot air flow from a flow direction in a direction of outflow deflecting and projecting into it deflection be oriented at an angle to the flow direction, which is smaller than that Angle of the flow direction to the outflow direction. The outflow direction can advantageously lead into the laundry drum inside. This has the advantage that thereby to dispense with separate, the heating assembly downstream deflection can and a homogeneous hot air flow is generated in the outflow. To the heating module structurally as simple as possible, the at least one Temperature sensor also be arranged on the deflection surface. Furthermore, the deflection protrude into the core area of the hot air flow.

In an advantageous development of the at least one temperature sensor as Thermostat be configured by the energy supply of the at least one heating element temperature dependent is controllable. As a result, the at least one heating element switched off by the thermostat when the permissible limit temperature is exceeded becomes. This saves additional control lines to the control unit of the tumble dryer which reduces the material costs of the heating assembly. Furthermore, the heating assembly is thereby configured as a self-monitoring module unit, which only has to be supplied with energy during operation of the tumble dryer.

Inside the tumble dryer, in the area between the back wall and the laundry drum there is little space for the flow channel and the used therein Heating module available. In order to design the heating assembly as low as possible, can the at least one temperature sensor in an advantageous embodiment taken on the side facing away from the hot air flow in a recess his. Furthermore, the recess may be formed by the deflection surface, whereby the Heating assembly is structurally simple design. Furthermore, the recess in the built-in state curved into the flow channel to be formed.

Thus by the mounted heating assembly a prescribed minimum distance to Rear wall of the tumble dryer is not fallen below at any point, the heating assembly on the side facing away from the hot air flow in a cross section transverse to Rear wall of the tumble dryer have a substantially planar outer contour. Farther For example, the at least one temperature sensor in the recess may be open Rear wall of the tumble dryer accessible at least from the back from the outside be arranged to a simple for assembly or maintenance purposes Allow access to the temperature sensors.

Furthermore, the deflection means in an advantageous embodiment in the deep-drawing process be prepared. This has the advantage that deep-drawn components in large numbers can be produced inexpensively and the deflection, the at his the side facing away from the hot air flow can form the recess, especially for this purpose good. Furthermore, the deflecting means and the carrier element can be made in one piece be configured to the manufacturing cost of the heating assembly according to the invention to reduce.

In an advantageous development, the heating module on the inflow side with at least be provided a flow guide, wherein the at least one flow guide on the inflow side in the inflow direction and on the inflow side in the flow direction is aligned. This has the advantage that a hot air flow, obliquely on the Heating assembly impinges, in the optimal for the heating of the hot air flow through flow is deflected, thereby effectively heating the hot air flow is guaranteed.

To install the heating assembly quickly and easily in the dryer and / or to be able to remove from it, the heater assembly can at least one connector comprising, with which the heating assembly to a power source and / or a control unit is electrically connected. The connector can be a standardized connector be, as a cost-effective purchased part, the manufacturing cost of the heating assembly reduced. Further, the connector may be at an outside of the flow channel be mounted, cranked flange portion of the support member to be mounted. hereby can the connector from the space critical area between the flow channel and rear wall of the clothes dryer are pulled out, without increasing the thickness of the heating assembly. Furthermore, the cranked Flange portion of the support member to be provided with reinforcing means. hereby is the mounted on the flange portion connector in a plug supported, in which a mating connector can be inserted into the connector.

In a further advantageous embodiment, the heating assembly, a sealant have, with which the heating assembly gas-tight at the flow channel of the tumble dryer attachable. This has the advantage that the hot air flow is not from the Flow channel can escape and is passed lossless in the laundry drum. Further, the heating assembly may have at least one sealed opening, through at least one connecting line of the at least one heating element extends. This has the advantage when installed that the connecting cables of the at least one heating element are conducted gas-tight into the interior of the flow channel and prevents the hot air flow from partially leaking from the flow channel.

To be able to easily install the heater assembly in the tumble dryer and to do so To reduce the necessary assembly time, the heating assembly can be pre-assembled in one piece Be used flow channel usable.

So as little dead time when switching on and / or off the heating module until arises for heating or cooling, the at least one heating element with a be designed electric heating coil. The reaction time of heating coils is clear lower than e.g. of tubular heaters, comparatively by a larger mass are sluggish. Furthermore, the heating coil in an advantageous development be attached to a support element. This has the advantage of having a burned out Heating coil is still held on the support element and not on other heating coils falls and thereby cause an electrical short circuit. A method and an apparatus for producing such a heating element is described in DE 26 150 13 C3 described.

To overheat the heating elements in the event of a short circuit as quickly as possible capture, in an advantageous embodiment, the at least one temperature sensor arranged downstream of the heating elements in that region of the hot air flow be closer to the supply side of the heating elements.

Further, the at least one temperature sensor downstream of the supply side Halves of the heating elements may be arranged, thereby overheating the shorted Detect heating elements even faster. Furthermore, the at least a temperature sensor may be disposed at a location substantially on one side lying on the supply side of the heating elements running scratch line. The streak line is the locus of all the particles that over time on the supply side flow past the heating elements. As a result, the temperature sensor is in one area arranged in the flow direction with the area around the supply side of the Heating elements overlaps.

The invention relates in addition to the heating assembly described above and their embodiments also a tumble dryer for drying damp laundry with a hot air stream, wherein the tumble dryer with an air supply and one of the hot air flow durchströmbaren flow channel is configured. To heat the hot air stream and yet 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 an advantageous embodiment, the heating assembly of the invention Tumble dryer at least partially the flow channel of the tumble dryer form. This has the advantage that the heating assembly is particularly light can be mounted and the manufacturing cost of the laundry dryer according to the invention to reduce. Furthermore, the heating assembly with at least one locking means be releasably or permanently attached to the flow channel, which provides the necessary Installation time of the tumble dryer reduced.

The invention relates in addition to the above-mentioned devices and their further Embodiments also a method for assembling a clothes dryer, by in operation, a hot air stream for heating wet laundry is heated. To the to shorten the necessary installation time of the tumble dryer is provided according to the invention, a deflection means, at least one heating element and at least one thermostat be pre-assembled to a heating module and then the heating module in a Flow channel is used in the operation of the tumble dryer from the hot air flow is flowed through.

In an advantageous development, the heating assembly can be detachable or non-detachable Latching on the flow channel be attached to the assembly of the tumble dryer to simplify.

In the following, the invention will be described by way of example with reference to the accompanying drawings explained. The different features can be independent of each other be combined, as above in the individual advantageous embodiments already was set out.

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 of Fig. 1a;

Fig. 2

a perspective view of the heating assembly of Figure 1a schematically from behind.

Fig. 3

a perspective view of the heating assembly according to the invention of Figures 1 and 2 schematically from above.

Fig. 4

a perspective view of a clothes dryer according to the invention schematically from behind.

First, the general structure of a heating module 1 according to the invention with Referring to FIGS. 1-3 and the exemplary embodiment illustrated therein.

The heating assembly 1 comprises a carrier element 2, on which a deflection means 3, two Temperature sensors 4 and a plurality of heating elements 5 are mounted on the side, the during operation of the heating assembly 1 facing a hot air stream 6.

The heating elements 5 are arranged in a housing frame 7, which on the support element 2 is attached and to which a plurality of insulating 7 'are mounted. The case frame 7, the hot air flow 6 opposite to a plurality of flow directing 8 on.

During operation of the heating module 1, the hot air flow 6 impinges in an inflow direction E. the flow guide 8 of the housing frame 7. Flow guide 9 of the flow guide 8 are upstream in the inflow E and the flow side in a flow direction D aligned. Through the flow guide 9 of the flow guide 8, the hot air flow 6 from the inflow direction E in the flow direction D redirected. In the exemplary embodiment of the invention Heating assembly in Figs. 1 - 3, the hot air flow 6 obliquely hits the heating assembly 1. Therefore, the flow guide 8 on the housing frame 7 in Figs. 1-3 are also aligned obliquely to the housing frame 7. In a different direction of inflow E is the angle of the flow guide 8 to the housing frame 7 accordingly customized.

Diverted in the direction of flow D, the hot air flow 6 hits the heating elements 5 and flows through or flows around them. This heat energy from the 5 heaters discharged to the hot air stream 6 and this heated.

In the embodiment illustrated in FIGS. 1-3, the heating elements 5 are converted electrical energy into heat energy. For this purpose, electrical energy is supplied via connecting cables 10 introduced into the heating elements 5. The heating elements 5 comprise each a heating coil 11, which heats up due to their electrical resistance, when electrical energy flows through them. The embodiment shown in FIGS. 1-3 comprises two mutually parallel heating elements 5. The heating elements 5 are electrically connected to a supply side 12 each with a connecting line 10 conductively connected, e.g. by soldering or a plug connection. At the from the supply side 12 opposite side, the heating coils 11 of both heating elements 5, e.g. connected by a cable electrically conductive and thus connected in series. During operation of the heating module 1 electrical energy flows from the supply side 12 through the heating coils 11 of the two heating elements 5 therethrough and on the supply side 12 again out of the heating elements 5 addition. By the electrical resistance heat the heating coils 11 and give heat energy to the hot air stream 6 flowing around it.

In order to ensure a good stability of the heating elements 5 and a vibration or To avoid swinging of the heating elements 5, the heating coils 11 are supporting body 13 wrapped around. A method and apparatus for making such heating elements is described for example in DE 26 15 013 C3. Through the support body 13, the heating elements 5 are designed stably and need only at their ends to the on the housing frame 7 mounted insulating 7 'are supported. Farther is transmitted through the support bodies 13 e.g. also held a burned heating coil 11, thereby not falling on the heating coil 11 of the other heating element 5 and a Short circuit can cause.

In the insulating 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 in the housing frame 7 aligned parallel to the flow direction D. are. As a result, a particularly low flow resistance through the Heating elements 5 reached.

The housing frame 7 is in the embodiment shown in Figs. 1-3 as a punched and edged sheet metal part designed, on which on the inside of the Insulating 7 'are mounted. The insulating elements 7 'are made of electrical and thermal insulating material, such as e.g. Micanite, made. This is the case frame 7 thermally insulated to the heating elements 5 and the hot air stream 6. The housing frame 7 is e.g. is attached by spot welding on the support element. Alternatively, the housing frame 7 and the support member 2 also riveted, glued or screwed.

The heated by the heating elements 5 hot air stream 6 meets in the flow direction D on a deflection surface 14 of the deflection means. 3

The deflection surface 14 of the deflection means 3 is aligned so that the hot air stream 6, which meets in the flow direction D on the deflection surface 14, in the direction of an outflow direction A is deflected. In this case, the angle α of the deflection surface 14 to the flow direction D smaller than the angle of the flow direction D to the outflow direction A. In the embodiment shown by way of example in FIGS. 1 to 3, the angle α the deflection surface 14 to the flow direction D substantially half as large as the angle the flow direction D to the outflow A. During operation of the heating assembly 1 is located in the outflow A advantageously the laundry drum of the Clothes dryer. Thus, the hot air flow 6 through the deflection surface 14 in the direction directed the laundry to be dried.

In the deflection surface 14 of the deflection means 3 are in the in Figs. 1 - 3 shown Embodiment two temperature sensors 4 are arranged.

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 stream 6. As in 1 b, the hot air stream 6 has a core region 15 which extends from a jacket region 16 is surrounded. The temperature in the jacket region 16 of the hot air flow 6 is lower than in the core region 15, since the jacket region 16 by the ambient air and the support member 2 is cooled and less heated by the heating elements 5 which he does not pass through, but only flows past. Therefore, the maximum temperature the hot air flow and overheating of the heating elements 5 based on the temperature of the core region 15 can be seen more clearly than on the basis of the temperature of the jacket region 16. For this reason, the temperature sensors 4 are arranged so that they Measure the temperature of the hot air stream 6 in its core region 15. By the better Temperature detection is an accurate temperature control of the hot air stream 6 possible the drying of sensitive laundry is particularly important.

As shown in Fig. 1a, the two temperature sensors 4 are downstream of the halves arranged the heating elements 5, which lie on its supply side 12. Through metal parts, which can get into the heating module 1 during operation of the tumble dryer, can cause a short circuit between the heating coils 11 of the heating elements 5 become. Due to the short circuit, the effective length of the heating coils 11, through the electrical energy flows through it and heats it, and the electrical resistance the heating elements 5 reduced. The heating elements 5 only heat between the supply side 12 and the short circuit, but there inadmissibly strong, because the introduced amount of energy remains unchanged. However, the temperature sensors are 4 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. This will invalidate the Heating the heating elements 5 by an excessive temperature of the hot air stream 6 detected very quickly. The heating elements 5 can be switched off in good time be before the back of the clothes dryer or the laundry in the laundry drum heat excessively.

In particular, in the invention shown by way of example in FIGS Heizbaugruppe 1 arranged at least one of the temperature sensor 4 at a location the substantially on a on the supply side 12 of the heating elements 5 extending Streichlinie lies. The brushing line is the locus of all particles in the Over time, bypass the supply side of the heating elements. The temperature this particle increases with a short circuit of the heating elements and gets through the temperature sensors monitored. The temperature sensors are in one area arranged in the lying in the direction of flow projection of the area at the Supply side of the heating elements is located.

The temperature sensors 4 are in openings (not shown) in the deflection surface fourteenth arranged the deflection means 3. The temperature sensors 4 are characterized by a mechanical soluble or insoluble compound, e.g. by welding points 17, with the Deflection means 3 connected. Alternatively, the temperature sensors 4 may be e.g. also through Riveting, gluing, clinching or by a repeatedly releasable screw with be connected to the deflection means 3.

The deflection means 3 is attached to the carrier element 2. When in Figs. 1 - 3 shown Embodiment, the carrier element 2 and the deflection means 3 are integral designed as a deep-drawn sheet metal. This allows the carrier element 2 and the deflection means 3 are produced in a manufacturing step, whereby the Reduce the sum of the individual parts and the manufacturing costs of the heating module 1.

At the edge of the support member 2, a seal 18 is arranged, through which the heating assembly 1 is gas-tight attachable to a flow channel of a clothes dryer. Furthermore, a sealed opening 19 is arranged in the support element 2, through which the Connecting lines 10 of the heating elements 5 gas-tight passed through the support member 2 are. By the seal 18 and the sealed opening 19 is ensured that the hot air stream 6 is not partially from the flow channel of the tumble dryer exit.

As shown in Fig. 2, on the side facing away from the hot air flow side of the heating assembly 1 formed a recess 20 formed by the deflection surface 14. In the Recess 20 are the rear beyond the deflection surface 14 protruding Parts of the temperature sensors 4. Here, the recess 20 in the flow channel 29 arched. The heating assembly 1 is formed so that it on the hot air flow 6 opposite side 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 the heating module 1 minimizes what, when installed in the dryer especially is advantageous because for the heating assembly 1 in the dryer often only little space is available. The temperature sensors 4 are open in the recess 20 Rear wall 27 of the clothes dryer 26 at least from the back from the outside accessible.

The temperature sensors used in the embodiment illustrated in FIGS. 1-3 4 are designed as thermostats. Thermostats are small switching units that to switch an electrical signal depending on the temperature. When the heating module 1 in the 1 - 3 turn off the thermostats 4, the heating elements 5, as soon as a predetermined Limit temperature is exceeded. For this purpose, the thermostats 4, for example contain a bimetallic element, the temperature of the energy flow to the heating elements 5 on. This allows to control lines to the control unit of the tumble dryer be dispensed with, since the heating assembly 1, the temperature of the heating elements 5 independently monitored and independently when exceeding the limit temperature off.

In order to connect the thermostats 4 particularly easily, they are with two standardized ones Connection contacts (not shown) provided. The connection lines 10 the heating elements 5 are plugged with connector elements 21 on the connection contacts. At the second terminal contact (not shown), each thermostat 4 through another connecting line 10 'connected to a standard connector 22.

By the connector 22, the heating assembly 1 in the installed state to a Energy source connected. The connector 22 is at its rear with a Locking means 23 configured. With the locking means 23 of the connector 22 is at a cranked flange portion 24 of the support member 2 is attached. To the connector 22 in a plug-in direction S, in which a mating connector during assembly of the tumble dryer is plugged into the connector 22 to support, is the cranked Flange portion 24 of the support member 2 is provided with reinforcements 25. As in FIG. 3 illustrated, the connector 22 by the cranked flange 24 is outside the flow channel of the tumble dryer can be arranged.

FIG. 4 shows the heating assembly 1 of FIGS. 1-3 installed in a tumble dryer 26 is. For the sake of clarity, the tumble dryer 26 without cover and with opened rear wall 27 shown.

The tumble dryer 26 comprises a laundry drum 28, in which wet during operation Laundry is located. From an air supply (not shown) of the hot air stream 6 through a flow channel 29 in the laundry drum 28 for drying the wet laundry introduced therein. The flow channel 29 has an opening 30 into which the heating assembly 1 is used. By the heater assembly 1, the hot air stream 6 in Flow channel 29 heated. At the opening 30 of the flow channel 29 are notches 31st arranged, which can be latched into counter-detents 32 of the heating assembly 1. This can the heating module 1 repeatedly releasably and time-saving attached to the flow channel 29 become. Alternatively, the detents 31 and mating latches 32 may also be a permanent connection or replaced by a screw or rivet connection.

After the preassembled heating module 1 in the flow channel 29 is inserted, a mating connector 33 is in the connector 22 plugged 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 is 22 advantageously arranged in the free space next to the flow channel 29. The heating assembly 1 forms a portion of the in the installed state Flow channel 29, making it particularly easy and quick to install.

Due to the particularly flat design of the heating module 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 tumble dryer 26 and the rear wall 27 complied. This ensures that the rear wall 27 of the tumble dryer 26 does not get too hot during operation and does not endanger the life and limb of an operator consists.

Claims (23)

Heating assembly (1) for heating a in a flow channel (29) of a tumble dryer (26) flowing hot air stream (6), wherein the heating assembly (1) in the flow channel (29) is designed usable and at least one heating element (5), the hot air flow (6) in a flow direction (D) is arranged flow around, and at least one temperature sensor (4) through which the temperature of the hot air flow (6) can be detected comprises, characterized in that the at least one temperature sensor (4) in a core region ( 15) of the hot air stream (6) is arranged projecting. Heating module (1) according to claim 1, characterized in that the hot air flow (6) from a flow direction (D) in an outflow direction (A) and deflecting into it deflecting surface (14) at an angle (α) to the flow direction (D) is aligned, which is smaller than the angle () of the flow direction (D) to the outflow direction (A). Heating module (1) according to claim 2, characterized in that the deflection surface (14) projects into the core region (15) of the hot air flow (6). Heating module (1) according to claim 2 or 3, characterized in that the at least one temperature sensor (4) on the deflection surface (14) is arranged. Heating assembly (1) according to one of claims 2 to 3, characterized in that the angle (α) of the deflection surface (14) to the flow direction (D) substantially half as large as the angle () of the flow direction (D) to the outflow direction (A ). Heating assembly (1) according to one of the above claims, characterized in that the at least one temperature sensor (4) is designed as a thermostat (4) through which the energy supply of the at least one heating element (5) is temperature-dependent controllable. Heating assembly (1) according to one of the above claims, characterized in that the at least one temperature sensor (4) on the side facing away from the hot air flow (6) side is received in a recess (20). Heating assembly (1) according to claim 7, characterized in that the at least one temperature sensor (4) in the recess (20) with the rear wall (27) of the tumble dryer (26) is at least accessible from the outside accessible from the rear. Heating assembly (1) according to claim 7 or 8, characterized in that the recess (20) in the installed state in the flow channel (29) is curved. Heating assembly (1) according to one of claims 7 to 9, characterized in that the recess (20) of the deflection surface (14) is formed. Heating assembly (1) according to one of the above claims, characterized in that the heating assembly (1) on the hot air flow (6) facing away in a cross section transverse to the rear wall (27) of the tumble dryer (26) has a substantially planar outer contour. Heating assembly (1) according to one of the above claims, characterized in that the heating assembly (1) is provided on the inflow side with at least one flow guide surface (9), wherein the at least one flow guide surface (9) upstream in the inflow direction (E) and on the flow side in the Flow direction (D) is aligned. Heating module (1) according to one of the above claims, characterized in that a connectable to a power source connector (22) on a, outside the flow channel (29) can be arranged, cranked flange portion (24) of the support element (2) is mounted. Heating assembly (1) according to one of the above claims, characterized in that the heating assembly (1) has a sealing means (18) with which the heating assembly is gas-tight on the flow channel (29) of the tumble dryer (26) attachable. Heating assembly (1) according to one of the above claims, characterized in that the heating assembly (1) has at least one sealed opening (19) through which extends at least one connecting line (10) of the at least one heating element (5). Heating module (1) according to one of the above claims, characterized in that the heating assembly (1) is configured in one piece pre-assembled in the flow channel (29) configured. Heating assembly (1) according to one of the above claims, wherein in operation electrical energy is conducted on a supply side (12) through at least two mutually parallel, in series heating elements (5), characterized in that the at least one temperature sensor (4) downstream of the heating elements (5) is arranged in the region of the hot air flow (6) which is closer to the supply side (12) of the heating elements (5). Heating assembly (1) according to claim 17, characterized in that the at least one temperature sensor (4) is arranged downstream of the supply-side halves of the heating elements (5). Heating assembly (1) according to claim 17 or 18, characterized in that the at least one temperature sensor (4) is arranged at a location which is located substantially on a supply line (12) of the heating elements (5) extending scratching line. Dryer (26) for drying damp laundry with a hot air flow (6), wherein the tumble dryer (26) with an air supply and with a hot air flow (6) can flow through the flow channel (29), characterized in that the clothes dryer (26) a Heating assembly (1) according to one of the above claims. Clothes dryer (26) according to claim 20, characterized in that the heating assembly (1) at least partially forms the flow channel (29) of the tumble dryer (26). Clothes dryer (26) according to claim 20 or 21, characterized in that the heating assembly (1) with at least one latching means (31) releasably or non-detachably on the flow channel (29) is mounted. Method for assembling a tumble dryer (26), by means of which during operation a hot air stream (6) for heating moist laundry can be heated, comprising the following process steps: Pre-assembly of a deflecting means (3), at least one heating element (5) and at least one temperature sensor (4) to a heating assembly (1), Inserting the heating assembly (1) in a flow channel (29) which is flowed through during operation of the tumble dryer (26) from the hot air flow (6).

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