EP1054094A1 - Drying device for the laundry - Google Patents

Abstract

The inner drum (1) comprises two separate half-shells (2,3) each extending across half of the drum periphery. At least one half-shell (3) can be shifted in the axial direction (26) in relation to the other half-shell (3). The inner space of each shell (2,3) is divided by at least one partition (21-24) into at least two adjacent parts (12-17). When the inner drum rotates, at least one section of a half-shell (2) forms a joint inner drum chamber (18-20) with at least one opposite section of the other shell (3).

Description

The invention relates to a drying device for laundry with a housing jacket for the air flow for moisture removal and with one in it rotatingly driven and perforated inner drum as a chamber for taking up laundry.

Known drying devices of this type are single-drum machines with stationary ones Outer drum and one in a substantially horizontal one Drum axis rotating driven inner drum. The inner drum is there usually from a hollow cylindrical or tubular jacket made of perforated Stainless steel sheet, which at its inner axial end through a the inner drum rear wall forming, essentially aligned radially to the drum axis Stainless steel sheet is closed. The front wall delimiting the other end differs from the back wall in that it has a central fill opening for the items of laundry to be dried, which only after filling is closed by a door hinged to the outer housing. During the The drying process is the one surrounding the item of laundry in the manner of a chamber Internal drum kept rotating to loosen up the laundry item and the laundry items of the laundry item as evenly as possible to the current exposed to the drying air.

In the known single drum machine, the individual process steps run the drying process in the same inner drum one after the other. There are which is essentially shaking the previously dewatered into the inner drum imported laundry, their heating, their full drying and the before cooling necessary to remove laundry. Cooling down is for safety reasons required because the drying process with up to approx. 150 ° hot air is carried out and only after the cooling process safe further handling the laundry. The door for laundry removal may therefore only be removed be opened after cooling to a safe laundry temperature can. After loading with the new batch of laundry, the dryer is working again heated up. All of this means loss of time and energy.

The invention has for its object a drying device of the beginning mentioned type so that the drying process largely continuously and avoiding disadvantageous loss of time and energy expires. This object is solved by claim 1.

The solution shown is based on its basic design comparable to that usually already found in large industrial laundries used car washes, in which the individual process steps in successive switched drums run off. But this is an application of the Conveyor systems usual for washing machines to push the individual Lots of laundry from one chamber to the next chamber are not possible. The too Drying laundry is found in large industrial laundries dehydrated the drying process. The drainage takes place in, for example a press. Then the laundry to be dried is in the form of a compressed Press cake before. Even after it is loosened, the use of Conveyor systems that have been tested in car washes for the passage of laundry items not possible due to dryer chambers lying one behind the other, because the dried laundry takes up a much larger volume than Wet wash. The sliding vanes or commonly used in car washes An Archimedean screw is therefore an analogue funding designed drying process in a drying line unusable. Moreover can use sliding blades or an Archimedean screw as funding not for a dryer line designed roughly analogously to a car wash be used because the air is very easily washed up by the air Swirling dryer chamber to dryer chamber and thus the individual batches of laundry or laundry items could be mixed.

Entladen", d.h. in Förderrichtung bzw. in Durchlaufrichtung um eine Kammerbreite vorverschoben. Dadurch wird gleichzeitig der in jedem Abteil der unten positionierten Halbschale einliegende Wäscheposten in die in Förderrichtung folgende Kammer vorverschoben. Außerdem steht dadurch die untere Halbschale mit ihrem an das vornliegende Entladeende angrenzenden Abteil frei über die Innentrommel bzw. aus der Maschine heraus.In the solution according to the invention, each batch of laundry or each batch of laundry is in the drying phase in a self-contained inner drum chamber which is separate from the neighboring chamber and whose operating principle resembles that of a single-drum machine or a single-drum dryer of the conventional type. To advance the individual items, the rotary drive of the inner drum is stopped when the displaceable half-shell is approximately at its bottom dead center position. As a result, the laundry collects within the lower half-shell. Then we move the lower half-shell towards

Unloading ", ie advanced by one chamber width in the conveying direction or in the direction of flow. This simultaneously pushes the item of laundry lying in each compartment of the half-shell positioned below into the chamber following in the conveying direction. In addition, the lower half-shell with its compartment adjoining the front unloading end stands thereby freely over the inner drum or out of the machine.

Now the inner drum is turned half a turn. The advanced, lower half-shell rises and is then above the other, undisplaced Half-shell positioned. As a result, the dried one lying in its unloading compartment falls Laundry e.g. on a conveyor. At the same time, they fall into the insert the rear compartments of the half-shell, which has been turned up and pushed forward Lots of laundry in the corresponding compartments of the others, now lower and undisplaced half-shell. In this new rotary position is the now empty receiving compartment located in the conveying direction the half-shell, which has now remained undisplaced, is now free and is therefore ready for the loading or filling of a new item of laundry.

After the unloading and reloading has been completed in this way, the pre-shifted and half shell positioned above pushed back until both half shells completely overlap again and all of their corresponding compartments in mutual assignment individually all around self-contained Form drum chambers.

Now the new drying process is started. To do this, reheat the loosening and heating chamber filled with new laundry and the drying chamber connected in the direction of flow is not necessary, because they haven't been cooled down before. Cooled down and permanently only the one adjacent to the unloading side, i.e. in front in the conveying direction Chamber, after cooling and turning off the rotary drive the half shell below with its unloading compartment towards the unloading side so far is pushed forward that the unloading compartment with initially upward Unloading opening is exposed. The inner drum is then rotated half a turn. This causes the lower half-shell to rise and become around the inner drum axis turned. As a result, your filling opening swivels downwards and the Dried laundry falls out of the unloading compartment due to its inherent weight e.g. on a conveyor belt.

The further invention relates to the management, treatment and distribution of the Subject matter of the invention used for drying fresh air until recirculation as exhaust air into the ambient air of the drying device or into the free atmosphere. It is the subject of claims 10 ff.

Fig. 1

einen schematischen Querschnitt durch die mittels eines Drehantriebes (nicht gezeigt) in Rotation um Ihre imaginäre, lotrecht zur Bildebene verlaufende Längsachse antreibbare gelochte Innentrommel.

Fig. 2

einen Längsschnitt durch die wesentlichen Teile, also sowohl durch die Innen- als auch durch die Außentrommel der Trocknungseinrichtung in deren für den Trocknungsprozess üblicher Relativstellung und in schematisch vereinfachter Form entsprechend der Schnittlinie II-II in Fig. 1.

Fig. 3

eine Darstellung analog Fig. 2 bei in ihre Entladestellung vorgeschobener unterer Halbschale.

Fig. 4

eine Draufsicht in Blickrichtung IV von Fig. 3 auf das zur Wäscheabgabe um ca. 135° um die Innentrommelachse nach oben geschwenkte Entladeabteil.

Fig. 5

einen Längsschnitt analog Fig. 2 und 3 durch die Trocknungseinrichtung mit vollständig, d.h. um 180° aus der unteren in die obere Totpunktlage (Entladeposition) gedrehter, vorgeschobener Halbschale und mit entsprechender Auswurfstellung ihres Entladeabteils sowie mit auf der hinteren Beladeseite freiem Beladeabteil der in ihrer unteren Totpunktstellung befindlichen, unverschobenen Halbschale.

Fig. 6

einen Längsschnitt mit nach Rückverschiebung aus der Stellung gemäß Fig. 5 in Trocknungsposition befindlicher vollständiger Überdeckungsstellung zwischen den beiden Halbschalen, deren miteinander korrespondierenden Abteile jeweils rundum in sich geschlossene Wäschekammern bilden.

Fig. 7

eine schematische Darstellung der Luftführung der Trocknungseinrichtung in Längsschnittansicht.

Fig. 8

die Luftführung für die Trocknungsluft ähnlich einem Fließdiagramm mit im Querschnitt gemäß den Schnitten VIIIa-VIIIc in Fig. 7 dargestellten Innentrommelkammern.

The invention is described for example with reference to the figures. In it show:

Fig. 1

a schematic cross section through the perforated inner drum which can be driven by means of a rotary drive (not shown) in rotation about your imaginary longitudinal axis running perpendicular to the image plane.

Fig. 2

a longitudinal section through the essential parts, that is, both through the inner and the outer drum of the drying device in its relative position, which is usual for the drying process, and in a schematically simplified form according to section line II-II in FIG. 1.

Fig. 3

a representation analogous to FIG. 2 with the lower half-shell advanced into its unloading position.

Fig. 4

a plan view in viewing direction IV of FIG. 3 on the unloading compartment pivoted upwards for laundry delivery by about 135 ° about the inner drum axis.

Fig. 5

a longitudinal section analogous to FIGS. 2 and 3 through the drying device with the half shell fully rotated, that is to say rotated through 180 ° from the lower dead center position (unloading position) and with the corresponding ejection position of its unloading compartment and with a loading compartment free on the rear loading side of the lower one Dead center position, undisplaced half-shell.

Fig. 6

a longitudinal section with after complete displacement from the position shown in FIG. 5 in the drying position in the complete overlap position between the two half-shells, the corresponding compartments of which each form a self-contained laundry chamber.

Fig. 7

a schematic representation of the air duct of the drying device in longitudinal sectional view.

Fig. 8

the air duct for the drying air similar to a flow chart with inner drum chambers shown in cross section according to sections VIIIa-VIIIc in Fig. 7.

The core of the drying device is the inner drum 1. It is divided by two Independent half-shells each extending over about half the drum circumference 2,3 formed. The half-shells 2, 3 each have the outline shape a pipe section approximately halved in its longitudinal direction with relative large pipe diameter, the ends 4.5 and 6.7 of the two pipe section halves each at right angles to the pipe axis = drum axis of rotation 9 running end walls closed and the tube jacket or the two the half-shells assigned to the tube half-shells 2, 3. The holes 8 of the pipe jacket are shown schematically. They are used for free, in single drum dryers basically known manner, radial to the drum axis of rotation 9 directed flow of one enclosed by the perforated jacket Drying chamber with drying air. The perpendicular to the drawing plane of Fig. 1st extending drum axis of rotation 9 occurs within the inner drum 1 or within their halves 2,3 not appearing. It is only in the inner drum area imaginatively present. The inner drum 1 is namely on its outer circumference between support rollers 10 within a serving as a stationary housing shell Outer drum 11 rotatably mounted. The outer drum 11 is used for storage the inner drum 1 also for air guidance for moisture removal.

The half shells 2, 3 are not shown, only on one of the two Half-shells - here half-shell 2 - acting displacement drive in the axial direction 12 displaceable relative to each other. The axial displacement of the half-shell 2 is in FIGS. 2, 3, 5 and 6 by one in the middle compartment 13 of the half-shell 2 marked double direction arrow symbolically identified. Moreover is the interior of each half-shell 2, 3 between its end walls 4.5 or 6.7 in three compartments 12-14 (inner drum 2) or 15-17 (inner drum 3) divided by the same compartment size. The compartments 12-14 and 15-17 are in Axial direction or in the direction of the drum axis of rotation 9 side by side. In the in 2 and FIG. 6 complete overlap position between the two half-shells 2, 3 form the diametrically opposite one another Compartments of the half-shells 2, 3 each have an inner drum chamber Half-shells 12, 15 form the inner drum chamber 18, the half-shells 13, 16 the Inner drum chamber 19 and the half-shells 14, 17 the inner drum chamber 20. That is in the normal position of the two half-shells 2, 3 to one another Case (Fig. 2 and 6), in which the actual drying process is carried out and in accordingly the inner drum formed from two half-shells 2, 3 1 is driven in rotation and the air flow of drying air is suspended, the course of which is described in detail below.

Loading and unloading the drying device with individual items of laundry and their passage through the by means of radial partitions 21.22 and 23.24 separate compartments 12-14 and 15-17 of the two Half shells 2,3 and the unloading of a dried laundry item described in detail below, in particular with reference to FIGS. 3-5:

The drying device is loaded with a laundry item 25 from the loading side which is at the rear with respect to the direction of passage 26 27 to the front removal or ejection side 28 for the dried one Linen items 25.

The two are when it comes to loading as well as removal or ejection Half shells 2, 3 in the axial direction, i.e. in the longitudinal direction of the drum axis of rotation 9 shifted by a compartment or drum chamber width against each other in the manner. The axially fixed half-shell 3, which is in its bottom dead center position, stands in the back with its loading compartment 12 facing the loading side 27 End wall 6 of the shifted half-shell located in the top dead center position 2 addition (Fig. 5). As a result, the loading compartment 12 of the lower, non-shifted Half-shell 3 freely accessible from above within the outer drum 10. Therefore, the conveyor belt 29 designed in the exemplary embodiment Feeding device unhindered in the by the stationary outer drum 11 surrounding space above the loading compartment 12 of the unshifted Drive in the lower half-shell 3 and deliver a laundry item 25. This falls from above in the direction of arrow 30 into the loading compartment 12 in its bottom dead center position, axially immovable, so axially fixed Half shell 3 into it. This laundry item 25 is in the form of a dewatered Press cake before it from a dewatering press onto the conveyor belt 29 is given.

After loading the loading compartment 12 of the axially fixed lower half-shell 3, the upper inner half 2 in its full overlap position compared to the lower, axially fixed half-shell 3 against the direction of passage 26 retracted. In this complete overlap position shown in FIG. 6 between the two half-shells 2, 3 is the one formed from them Inner drum 1 completely within its casing by the outer drum 11. It is the normal relative position between the half shells 2, 3, within which the individual stages of the drying process take place. In this Position complements the end compartment 15 of the loading side 27 of the above, axially displaceable half-shell 2, the loading compartment 12 the axially fixed half-shell 2 below to form a self-contained all around Inner drum chamber 20. The same is the case in the through direction 26 adjacent, middle inner drum chamber 19 of the case by the overlapping central compartments 13, 16 of the two half-shells 2, 3 are formed is. This is also analogous to the inner drum chamber in front 20 the case caused by the mutual overlap Inner drum chambers 14, 17 is formed. In this shown in FIGS. 2 and 6 Normally, the actual drying process takes place and at the same time the inner drum 1 with its two half-shells 2, 3 in the direction of rotation 31 the inner drum axis 9 rotated by motor within the outer drum 11. Moreover is the inner drum 1 of a substantially radially directed, Air flow of dry air guided inside the jacket of the outer drum 11 blow through. The air flow is meanwhile shown below with reference to FIG. 7 and 8 described in detail.

Within the inner drum chamber located at the rear with respect to the direction of passage 26 18 takes place with rotation of the inner drum 1 in the dry air flow the shaking and heating of the laundry item 25.

The middle inner drum chamber, also filled with a laundry item 25 19 is used for the actual drying process at a drying temperature up to about 150 ° C. The one facing the ejection side 28 in the passage direction 26 the inner drum chamber 20 at the front is the cooling chamber in which the dried laundry items are cooled to a temperature that is not a hazard means more for manual laundry handling. With the inner drum rotating 1 take place in their adjacent chambers 18-20 at the same time on the one hand the shaking and the heating (chamber 18), the Drying (chamber 19) and cooling (chamber 20) a laundry item 25th

To remove a dried and cooled laundry item 25, the Rotary drive of the inner drum 1 in the bottom dead center position of the axially displaceable Half-shell 2 stopped. Then the lower half shell 2 is first in Direction of passage 26 with respect to the axially immovable inside the outer drum 11, advanced the upper half-shell 3. The removal compartment is then located 14 is open at the top uncovered (Fig. 3). While maintaining this The inner drum 1 is then opened clockwise by a half turn (Direction of rotation 31) rotated. The transfer of the axially displaceable half-shell 2 in one compared to the other half-shell overhead position, as shown in Fig. 5. Fig. 4 indicates one Intermediate position between the rotary positions according to FIG. 3 (starting position) and Fig. 5 (end position) of the ejection process. When swiveling the axially shifted half-shell 2 from its starting position shown in Fig. 3 at the same time, a catch device 32 moves into the now released space below the unloading compartment 14. The fall arrester is like a Effective tray into which the dried laundry item 25 from the swung-out removal compartment 14 falls downward in the direction of arrow 33 (Fig. 4). The collecting device 32 is expedient with a conveyor connected, which feeds the dry laundry to a next processing station (not shown). The ejection end position shown in Fig. 5 is also the Loading position for the new loading of the loading compartment 12 am rear end of the drying device.

By means of the invention it is now possible to carry out the drying process previously only carried out within a single inner drum from heating up to cooling was divided into several individual steps, step by step in the direction of passage 26 are carried out side by side. It is therefore not necessary to heat up the inner drum 1 one after the other, to expose it to the drying heat and then again to unload and pick up a new batch of laundry cool down. In the embodiment are in the same inner drum three inner drum chambers 18-20 arranged side by side. Basically, would it is already advantageous compared to the conventional single drum machine be, according to the invention with only two inner drum chambers arranged side by side 18.19 to work. But it is also quite conceivable instead of the im Embodiment in the normal position a total of three existing side by side together the inner drum 1 forming inner drum chambers 18-20 more to be provided as three inner drum chambers next to each other and thereby the Drying process from the loading side 27 to the ejection side 28 in carry out more than three individual steps without changing the Invention principle means. This is based on the division of the inner drum 1 in two half-shells 2,3, which in addition to the conventional drum rotation enable an axial relative displacement to one another in that the one Half shell 2 axially displaceable relative to the other, axially fixed half shell 3 is. This makes one in the axial direction through the drying device Gradually carry out the laundry while maintaining its item by item Introduction possible.

The air flow inside the drying unit saves a lot of energy possible. It is particularly in that in FIGS. 2 and 6 and 7 and 8th shown normal position of the inner drum 1 effective, ie outside the loading or unloading and ejection phase of the drying process. she will be described with reference to FIGS. 7 and 8.

Each inner drum chamber 18-20 is acted upon by an independent air flow or flows through, which is directed as the direction of passage 26 in the form of a counter air flow based on that of the ambient air fresh air 35 withdrawn initially by cooling the dried air Cooling chamber 20 serving laundry items, from there through the drying chamber 19 and finally passed through the heating chamber 18 before the counter air flow by means of the heat exchanger 36, the inherent heat withdrawn and then as exhaust air 37 again from the ambient air or Outside atmosphere is supplied.

The introduction of the counter air flow into an inner drum chamber 20-18 as Chamber air flow 38, 39 or 40 occurs when the direction of rotation is clockwise 31 of the inner drum 1 approximately in the 7 o'clock position (FIG. 8) the inside of the outer drum 11 in a diametrical direction to the drum axis of rotation 9. This blowing direction for the dry air means that the dry air approximately the 1 o'clock rotary position from the circumferential area of the rotatingly driven one Inner drum 1 is pulled off the outer jacket of the outer drum 11 and in Essentially to the 7 o'clock peripheral area of the neighboring in the counterflow direction Inner drum chamber is forwarded.

A special feature is that the supply air 38-40 is not complete but only partially, namely only roughly estimated about 40% from the original the fresh air 35 fed counter-air flow. Mostly In part, roughly 60% of the supply air flow is 38-40 to one of the Inner drum chambers 20-18 from circulation air. This distribution of quantities is based currently still on theoretical considerations, but still experimental and to be determined more precisely through empirical values to be acquired in practice are. They will also depend on the quality of the laundry flow of the invention Drying device upstream dewatering press, i.e. from Water content within the laundry item fed to the loading side 27 depend. Another criterion is the quality of the water to be drained Laundry material, i.e. textiles (cotton or e.g. blended fabrics).

In order to branch off circulation air, the counter-air flow is used after blowing through through an inner drum chamber 20, 19 and then 18 in each area a fork-shaped line division 41, 42 or 43 divided into one already flowed through the inner drum chamber 20,19 or 18 circulating circulation 44, 45 or 46 and into the further counter air flow, which leads to the next Inner drum chamber and last until exhaust 37 is continued. The air volume distribution in the one hand the recirculated circulation flow 44-46 and on the other hand, the further counterflow to the exhaust air 37 takes place through valves 47 in the respective flow paths. In front of the respective line division 41-43 is a Filters 48, 49 or 50 connected upstream. It is also in the counter current flow path behind each inner drum chamber 20-18 a fan 51, 52 or 53 used, which ensures the flow pressure or flow generation.

The heat extracted by the heat exchanger 36 from the exhaust air 37 becomes the Heat exchanger 54 supplied to the counter air flow in front of the drying chamber 19 is assigned and heats him up. It also becomes the drying chamber 19 and the chamber air flow 39 supplied to the heating chamber 18 or 40 heat supplied by external steam 55 or 56, as it is in industrially operated Laundries basically for heating purposes especially for that Wash water is available.

The counter air flow takes itself from the ambient or fresh air 35 the following course: the fresh air 35 becomes completely the chamber air flow 38 fed to the cooling chamber 20. However, it only feeds about 40% of the chamber air flow 38 towards the cooling chamber 20. This chamber air flow becomes approx. 60% 38 fed by circulating air 44 added to the counter air flow removed behind the cooling chamber 20, namely in the region of the line division 41 is branched from this.

Behind the chamber outlet 57, the counter air flow passes through the filters 48 and the flow is accelerated by the fan 51. The temperature level of the chamber air flow in the cooling chamber 20 during the cooling process from approximately 80 ° at the beginning to approximately 30 ° at the end, as shown in FIG is.

The branched off by the line division 41 and fed to the drying chamber 19 Counter air flow amounts to about 40% of the exhaust air flow the cooling chamber 20. However, this amount of countercurrent only contributes about 40% Total amount of chamber air flow 39 supplied to the drying chamber at, which is fed to about 60% from the circulating air 45, which is from the chamber exhaust air the drying chamber 19 branches off in the region of the line division 42 is. The chamber air flow 39 is caused by extraneous steam 55 Drying temperature of approx. 150 ° heated. That is during the Drying process in the drying chamber 19 at about the end of Drying process reached temperature level. Behind the drying chamber 19 again flows through the counter air flow through a filter 49 and it is accelerates a fan 52. About 40% of the exhaust air flow from the Drying chamber 19 is branched off in the region of the line division 52 and into Directed towards the heating chamber 18. This is where this counter-air flow forms meanwhile, in turn, only about 40% of the total amount of by external steam 56 still heated to a temperature of 150 ° chamber air flow 40. It flows through the heating chamber 18 and causes the heating of the laundry item 25 contained therein. Behind the heating chamber 18 the exhaust air in turn flows through a filter 50 and is experienced by the fan 53 an acceleration. 40% of the exhaust air is passed through a further filter 58 and pressed through the heat exchanger 36 by means of a fan 59 and the exhaust air 37 supplied. The in the heat exchanger 36 the exhaust air flow Extracted heat is the heat exchanger 54 for heating the supply air flow fed to the drying chamber 19.

Reference list

1

Inner drum

2nd

axially displaceable half-shell

3rd

axially fixed half-shell

4th

End wall of the inner drum half 2nd

5

End wall of the inner drum half 2nd

6

End wall of the inner drum half 3rd

7

End wall of the inner drum half 3rd

8th

hole

9

Drum rotation axis

10th

Support rollers

11

Outer drum

12th

Loading compartment

13

compartment

14

Withdrawal compartment

15

compartment

16

compartment

17th

compartment

18th

Inner drum chamber = Heating chamber

19th

Inner drum chamber = Drying chamber

20th

Inner drum chamber = Cooling chamber

21

partition wall

22

partition wall

23

partition wall

24th

partition wall

25th

Laundry items

26

Direction of passage

27

Loading side

28

Ejection side

29

Conveyor belt

30th

Arrow direction

31

Direction of rotation

32

Fall arrester

33

Arrow direction

35

Fresh air

36

Heat exchanger

37

Exhaust air

38

Chamber airflow

39

Chamber airflow

40

Chamber airflow

41

Line division

42

Line division

43

Line division

44

Circulation flow

45

Circulation flow

46

Circulation flow

47

Valve

48

filter

49

filter

50

filter

51

fan

52

fan

53

fan

54

Heat exchanger

55

Extraneous steam

56

Extraneous steam

57

Chamber exit

58

filter

59

fan

Claims (16)

Drying device for laundry with a stationary housing jacket (11) for the air conduction used for moisture removal and With an inner drum (1) perforated to allow air to pass through as a chamber for laundry, the inner drum (1) can be driven to rotate about a drum axis of rotation (9) that does not appear physically in its interior,
characterized, that the inner drum (1) contains two independent drum half-shells (2, 3) each extending over approximately half the drum circumference, that at least one half-shell (3) can be displaced in relation to the other half-shell (2) in the axial direction (26) by a displacement drive, that the interior of each half shell (2, 3) is divided by at least one partition (21-24) into at least two compartments (12-17) lying side by side in their axial direction (9) and that when the inner drum (1) rotates, at least one compartment (12-14) of the one half-shell (2) with at least one opposite compartment (15-17) of the other half-shell (3) has a common, self-contained inner drum chamber (18-20 ) forms. Drying device according to claim 1,
characterized, that the partitions (21, 22 or 23, 24) between the compartments (12-14 or 15-17) of a half-shell (2, 3) are aligned radially to the axis of rotation (9) of the inner drum (1). Drying device according to claim 1 or 2,
characterized, that the drives for the rotational movement of the inner drum (1) and for the displacement movement of their half-shells (2, 3) are only effective separately from each other. Drying device according to one of claims 1 to 3,
characterized, that a displacement drive of a half-shell (2, 3) can be switched on when a half-shell (2, 3) is approximately in a bottom dead center position. Drying device according to one or more of the preceding claims,
characterized, that the rotary drive of the inner drum (1) can be switched on when opposing compartments (12-14; 15-17) of the half-shells (2, 3) each form a closed chamber (18-20) between them. Drying device according to one or more of the preceding claims,
marked by in each case the brief suspension of each movement drive of the inner drum (1) or its half-shells (2, 3) after the end of a rotation or a displacement process. Drying device according to one or more of the preceding claims,
characterized, that their loading with a laundry item (25) at the rear end (27) of the inner drum (1) in relation to the laundry feed (26) into the outer compartment (12) of the lower half-shell (2) projecting rearward in the axial direction beyond the upper half-shell (3) ) and that the lower half-shell (2) is pushed back into a complete overlap position with the upper half-shell (3) before the drying process is started or the inner drum (1) rotates to form the chambers (18-20). Drying device according to one of claims 1 to 7,
characterized, that for the delivery of a dried laundry item (25) in the area of the front discharge end (28) opposite the loading end (27) the rotary drive (31) of the inner drum (1) is stopped, the half-shell (2) located in the bottom dead center position with its outer compartment (14) containing the dried laundry items (25) is displaced from its overlapping position with the upper half-shell (3) into a cantilevered position which projects beyond this and is open at the top and then the item of laundry (25) lying in the outer compartment (14) is poured out by a further rotation (31) of the inner drum (1) onto a collecting or further conveying device (32). Drying device according to one or more of the preceding claims,
characterized, that the two half-shells (2, 3) have three compartments of equal size (12-14; 15-17) arranged side by side in the axial direction for the joint formation of inner drum chambers (18-20) for the heating overlaid on the shaking of the damp laundry, for drying and for cooling a laundry item (25) which is in each case included. 10. Drying device according to one or more of the preceding claims,
characterized, that each inner drum chamber (18-20) is acted upon or flows through by an independent air stream (38-40) and that the individual chamber air flows (38-40) are parts of a counter-air flow connected in series, the in the opposite direction to the conveying direction (26) of the laundry through the drying device and is fed from ambient or fresh air (35) Drying device according to claim 10,
characterized, that the counter air flow fed by fresh air (35) passed through the cooling chamber (20) of the inner drum (1) for cooling the laundry, each before being passed through the other inner drum chambers (19, 18) and after flowing through the last inner drum chamber (18) is discharged into the ambient air as exhaust air (37). Drying device according to claim 10 or 11,
characterized, that the inner drum chamber through which the counter-air flow flows before its exhaust air supply is the heating chamber (18) of the inner drum (1). Drying device according to one of claims 10 to 12,
characterized, that part of the exhaust air discharged from the same chamber (20-18) is supplied as circulating air to the respective chamber supply air (38-40) fed from the counter air flow. Drying device according to claim 13,
marked by a mixing ratio of very roughly about 2 parts fresh air (35) or counterflow air to about 3 parts circulation air (44-46). Drying device according to one of claims 10 to 14,
characterized, that the counter air flow is filtered (48-50) after it has been passed through an inner drum chamber (20-18). Drying device according to one of claims 10 to 15,
characterized, that the counter-air flow is accelerated by a fan (51-53) after it has passed through an inner drum chamber (20-18). Drying device according to claim 16,
characterized, that the exhaust air passed through the heating chamber (18) is extracted for heat recovery by a heat exchanger (36) and fed to the part of the counter-air flow supplied to the drying chamber (19).

Images