EP2733249B1 - Washing machine with storage containers for detergents - Google Patents

Description

Field of the invention

The invention relates to a washing machine with at least one arranged in a drawer reservoir for receiving at least one detergent in an amount sufficient for several washes. The washing machine further has a removal device for the automated removal of the detergent from the at least one storage container.

background

A washing machine of this type is in DE 3403628 disclosed. The device has a drawer in which two storage containers for liquid detergent are housed. To remove the detergent from the reservoirs, a relatively complex flushing mechanism is provided, which is firmly integrated into the drawer. Such a flushing mechanism is complex to manufacture, difficult to clean.

US 2012/0152290 also describes such a washing machine and further shows a mixing chamber for mixing water and detergent. The detergent is pumped from the storage chambers via hoses, a pump and other hoses to the mixing chamber.

EP 2 251 481 also describes a washing machine with a mixing chamber. The detergent is led from the storage chambers via valves and via connecting hoses to pumps, and from the pumps via other hoses in the mixing chamber.

A washing machine according to the preamble of claim 1 is also made DE 10 2009 027 875 A1 known.

Presentation of the invention

It is an object of the present invention to provide a washing machine of the type mentioned, which is easy to manufacture and maintain.

This object is achieved by the washing machine according to claim 1. Accordingly, the removal device, with which the detergent can be removed from the storage containers, an adapter unit, which can be placed from above on the at least one storage container in a use position. The adapter unit has at least one suction pipe for sucking the detergent and at least one fill level sensor for detecting the fill level in the storage container. In the use position of the adapter unit, the suction tube and the level sensor protrude from above into the storage container.

This construction concentrates the complex components (namely, the suction pipe and the level sensor and the level sensors) in a unit which can be easily placed on top of the at least one storage container from above. In contrast, the construction of the drawer can remain simple.

If the drawer has a plurality of storage containers, the adapter unit preferably has a plurality of suction tubes and a plurality of fill level sensors, so that only one adapter unit can be used to remove detergent from each storage container and each storage container can be monitored.

Advantageously, each level sensor has at least one electrode, preferably two. This electrode or electrodes protrudes or project from above into the respective storage container. Such a level sensor makes it possible to determine the presence of detergent via an electrical resistance or impedance measurement. The configuration as protruding from above into the reservoir electrode (s) is particularly suitable for a solution in which the adapter unit can be placed from above on the reservoir.

In a further preferred embodiment, the adapter unit has a first coupling part. In addition, a second coupling part is provided as part of the washing machine, wherein the two coupling parts can be coupled to each other to form at least one removal line for detergent from the reservoirs and on the other hand at least one signal line for the level sensor or the level sensors. Thus, with only one coupling, the fluidic and electrical connections between the drawer and the rest of the washing machine can be created.

According to the invention, each storage container has a drainage valve with which an opening in the bottom of the storage container can be opened or closed. With the drain valve, the detergent can be drained from the reservoir.

Next, the washing machine may have a lock to limit the extension movement of the drawer in a maximum extension position. In this way, an inadvertent, too far pulling out of the drawer can be avoided. Advantageously, the device is designed in this case so that the adapter unit is inaccessible in the maximum extension position. By "inaccessible" is to be understood that in the maximum extension position nondestructive removal of the adapter unit from or insertion of the same is not possible in the position of use. To open the lock, the washing machine is preferably equipped with a tool. This tool can be coupled to the lock to then release the lock.

Brief description of the drawings

• Fig. 1 eine schematische Darstellung der im vorliegenden Zusammenhang relevantesten Komponenten einer Waschmaschine,
• Fig. 2 die Vorratsschublade in ihrer maximalen Auszugsposition,
• Fig. 3 die Vorratsschublade in entnommenem Zustand,
• Fig. 4 eine Explosionsdarstellung der Vorratsschublade,
• Fig. 5 die Adaptereinheit in ihrer Gebrauchsposition,
• Fig. 6 einen Schnitt durch die Vorratsschublade mit der Adaptereinheit in ihrer Gebrauchsposition entlang Linie VI-VI von Fig. 5,
• Fig. 7 und 8 zwei Ansichten der Adaptereinheit,
• Fig. 9 eine Ansicht der geöffneten Adaptereinheit,
• Fig. 10 eine Ansicht der Vorratsschublade von oben, mit abgenommenem Deckel,
• Fig. 11 die Arretierung, von der Geräteinnenseite her gesehen,
• Fig. 12 eine Ansicht der Waschmaschine mit geöffneter Mischschublade,
• Fig. 13 die Ansicht von Fig. 12 mit der Mischschublade ausgerüstet für Flüssigwaschmittel und
• Fig. 14 eine Ansicht des Betätigungswerkzeugs.

Further embodiments, advantages and applications of the invention will become apparent from the dependent claims and from the following description with reference to FIGS. Showing:

• Fig. 1 a schematic representation of the most relevant in the present context components of a washing machine,
• Fig. 2 the supply drawer in its maximum pull-out position,
• Fig. 3 the supply drawer in removed condition,
• Fig. 4 an exploded view of the storage drawer,
• Fig. 5 the adapter unit in its position of use,
• Fig. 6 a section through the supply drawer with the adapter unit in its position of use along line VI-VI of Fig. 5 .
• FIGS. 7 and 8 two views of the adapter unit,
• Fig. 9 a view of the opened adapter unit,
• Fig. 10 a view of the supply drawer from above, with the cover removed,
• Fig. 11 the lock, seen from the inside of the device,
• Fig. 12 a view of the washing machine with opened mixing drawer,
• Fig. 13 the view of Fig. 12 equipped with the mixing drawer for liquid detergents and
• Fig. 14 a view of the operating tool.

Ways to carry out the invention definitions:

By "detergent" are meant washing reagents of any kind with which laundry is treated, e.g. Colored laundry detergent, cooking detergent, softener or Textilveredler. The detergents used in the storage drawer are liquid or at least free-flowing detergents.

The terms "top", "bottom", "on", "below", "above", etc. are to be understood with respect to the intended orientation of the components of the washing machine in relation to gravity.

The "front side" of the washing machine is understood to mean the vertical side of the washing machine which normally faces the user, and the "back side" to the side opposite the front side.

Basic structure:

Fig. 1 shows the most important components of a washing machine in the present context. The apparatus comprises, in a stationary housing 1, a tub 2 of known type for accommodating a drum (not shown) in which the laundry is washed. A fresh water valve 4 controls the supply of fresh water to a mixing chamber 5. The mixing chamber can be formed in a known manner by a mixing drawer which is adapted to mix detergent with water. Such a mixing drawer, which may also be configured to receive individual portions of detergent, will be described in more detail below.

Next, a supply drawer 6 is provided, which is hereinafter referred to simply as "drawer 6" in the rule. In this drawer 6 at least two storage containers 7, 8 are arranged, which are provided for receiving detergents. Different or identical detergents can be stored in the storage containers. The detergents are flowable, in particular liquid.

On the storage containers 7, 8, an adapter unit 9 is arranged, which has primarily two tasks. On the one hand, it serves to remove detergent from the storage containers 7, 8, and on the other hand it is equipped with level sensors, which measure the level in the storage containers 7, 8. The structure of the adapter unit 9 will be described in detail later.

Furthermore, two delivery lines 11a, 11b are provided in order to convey detergent from the storage containers 7, 8 to the mixing chamber 5. At least the end of each delivery line 11a, 11b associated with the adapter unit 9 is formed by a flexible hose 12a, 12b which is capable of following the normal extension movement of the drawer 6. In the delivery lines 11a, 11b delivery pumps 13a, 13b are provided to suck the detergent from the storage containers 7, 8 and to promote the mixing chamber 5. The feed pumps 13a, 13b are preferably arranged stationary, i. they are stationary to the housing 1 and do not follow the extension movement of the drawer 6.

The mouths of the delivery lines 11a, 11b in the mixing chamber are each provided with a valve 14a, 14b, which prevents in the closed state an air inlet from the mixing chamber into the delivery lines 11a, 11b. Advantageously, these valves 14a, 14b are designed as check valves, which open when the respective feed pump 13a, 13b is put into operation, and automatically close again after switching off the feed pump. The valves 14a, 14b prevent drying or thickening of the detergents in the delivery lines 11a, 11b.

If the mixing chamber-side mouths of the delivery lines 11a, 11b are lower than the storage containers 7, 8, the valves 14a, 14b can additionally be designed so that they open only at a certain overpressure in the respective delivery line. This certain overpressure is higher than the hydrostatic one Pressure which the detergent exerts on the respective valve when the delivery pump is switched off. In this way, emptying of the reservoir due to the "siphon principle" can be avoided.

In Fig. 1 Furthermore, a controller 15 is shown, which controls the operation of the device. In particular, it also controls the feed pumps 13a, 13b and evaluates the signals from the level sensors of the adapter unit 9.

Stock drawer:

The structure of the supply drawer or drawer 6 results from Fig. 2-4 and 10 ,

The storage drawer or drawer 6 is preferably arranged in an upper region of the housing 1 and opens towards the front side. In Fig. 2 it is shown in its maximum extension position, ie in that position in which the user normally pulls them to the maximum, eg for filling the storage container.

The drawer 6 forms the two storage containers 7, 8. As out Fig. 4 and 10 can be seen, these reservoirs are designed as trays, ie they have closed side walls 21 - 23 and a bottom 24, but are open at the top. At the top, the storage containers 7, 8 are closed in "normal operation" by a removable cover 25, which prevents drying out of the detergents in the storage containers.

In the lid 25, two flaps 26a, 26b are provided, which can be opened in the extended state of the drawer, e.g. to fill the reservoir 7, 8.

Continue to show Fig. 2 and 3 the adapter unit 9. In its use position (which in Fig. 3 is shown) covers the lid 25 this adapter unit. 9

The drawer 6 has two lateral side portions, which are formed by the outer side walls 21, 22, and a bottom portion formed by the bottom 24. These areas extend along the extension direction 28 of the drawer 6, which in Fig. 2 is shown. Perpendicular to this direction extend the front portion 29 and the rear wall portion 30 (FIG. Fig. 3 ) of the drawer 6.

Adapter Unit:

The adapter unit 9 is in Fig. 5-9 shown in detail. It has a housing made of plastic, which is advantageously manufactured as a one-piece injection molded part. The housing has a lid 32, which is connected via a flexible, a hinge-forming web 33 with a housing base 34. The lid 32 may be attached via snap connections 35 on the housing base 34.

On the underside of the adapter unit 9 are two suction pipes 36, 37, which dip in the use position of the adapter unit 9 in the reservoir 7 and 8 respectively. Further, on the underside of the adapter unit 9, two pairs of electrodes 38a, 38b, 39a, 39b are arranged, which form two level sensors 38, 39 and which also dip in the use position from above into the reservoir 7 and 8 respectively.

Each suction tube 36, 37 passes in the interior of the adapter unit 9 in a horizontal pipe section 40 and 41 via ( Fig. 9 ), which leads to a pipe connector 42 or 43 on an outer side of the adapter unit 9.

Each electrode pair 38a, 38b, 39a, 39b comprises two electrode rods 45, which project downwards and have a bare metal surface, so that an electrical contact with the detergent in the reservoir is made possible. The electrode rods 45 protrude in the use position of the adapter unit 9 at least until in the bottom quarter of the reservoir 7 and 8, so that the electrical contact is lost only at relatively low level of the detergent. Thus, it can be determined via a resistance measurement between the electrode rods 45, whether the respective detergent must be refilled. This may be communicated by the controller 15 to the user on a display of the device.

How out Fig. 9 can be seen, 45 cable lugs 46 are attached to the upper ends of the electrode rods, of which cables or wires lead to an electrical connector 47, which is located between the two pipe connectors 42, 43.

The two tube plugs 42, 43 and the connector 47 arranged between them form a "first coupling part" 50. This can be coupled to a "second coupling part" 51, which is schematically shown in FIG 3 and 4 is shown. The second coupling part 51 forms the counterparts to the pipe connectors 42, 43 and the plug 47. On the second coupling part 51, the hoses 12a, 12b and the flexible electrical leads 12c attached to the level sensors 38, 39, which in 3 and 4 in the form of a hose and cable package 52 are indicated schematically.

How out Fig. 3 As can be seen, the first coupling part 50 is located at the in-use position adapter unit 9 on the side portion 21 of the drawer 6. This has - compared with an arrangement on the rear wall portion 30 - the advantage that the coupling parts 50, 51 reach the user when the drawer 6 is pulled out far enough without the drawer 6 but must be completely removed from the machine. More about this point is discussed below in the section "Locking".

When the adapter unit 9 is in the use position, the first coupling part 50 comes to lie in a region 54 of the side region 21 of the drawer 6 which is set back to the interior of the drawer, see FIG 3 and 4 , This ensures that the two are together connected coupling parts 50, 51 does not project laterally. The recessed area 54 extends along the lower edge of the drawer 6 along the back wall portion 30 of the drawer and thus makes room for the hose and cable package 52nd

Each of the coupling parts 50, 51 each forms a coherent body with at least two tube plugs 42, 43 and at least one electrical connector 47, so that all electrical and fluidic contacts can be created or released with just one hand.

Fig. 6 shows a section through the drawer 6 (without cover 25) with the adapter unit 9 in its use position. As can be seen, the adapter unit 9 rests on the vertical walls 21 and 23 of the storage containers 7, 8. The connection between the adapter unit 9 and these walls 21, 23 is such that it forms a seal, at least for a short overflow density. For this purpose, the adapter unit 9 forms at each wall 21 and 23, respectively, a first sealing part 60 which has a groove 61 which is open towards the wall 21 or 23. The wall 21 and 23 forms with their respective uppermost end a second sealing part 62 in the form of a tongue, which engages in the groove 61. The thickness of the tongue is advantageously dimensioned such that the groove 61 touches the tongue on both sides, so as to produce a dense connection possible.

Such a seal is advantageously provided at least between the outer side wall 21 and the adapter unit.

In the above example, the first seal member 60 constituting the groove 61 is disposed on the adapter unit 9, while the second seal member 62 constituting the tongue is constituted by the walls 21 and 23, respectively. However, the first sealing part can also be formed by the wall 21 or 23, while the second sealing part is arranged on the adapter unit 9.

As can be seen from the figures, the adapter unit 9 is held in the drawer 6 so that they are removed as a whole in one piece by moving upward from its use position or can be introduced in the reverse direction by movement from top to bottom in the use position.

Drain Valves:

For cleaning or removal of the drawer 6 each reservoir 7, 8 is equipped with a drain valve 65, with which an opening in the bottom of the reservoir can be opened or closed. This makes it possible to easily remove the detergent from the storage containers as needed.

How best Fig. 4 and 10 As can be seen, each drain valve has an operating shaft 66 which projects upwardly from the floor 24 through the respective reservoir 7 and 8, respectively, and which allows the user to operate the valve. In the present embodiment, the operating shaft 66 may be rotated about its vertical axis to open and close the opening.

The Betätigungsschafte 66 form in the present embodiment, maximum Füllpegelindikatoren by their head 67 is disposed at the maximum filling level of the respective storage container 7 and 8 respectively. For this purpose, the Betätigungsschafte 67 should extend as far as possible in the uppermost quarter of the height of the reservoir 7, 8.

In order for the operating members 67 to be readily visible and accessible, they are arranged vertically below the flaps 26a, 26b.

lock:

As already mentioned, shows Fig. 2 the drawer 6 in its maximum extension position. In this position, the flaps 26a, 26b are accessible, but not the adapter unit. 9

In the maximum extension position, the drawer 6 is prevented by a lock 70 at a further extension. This lock 70 is advantageously designed so that it can only be used with a suitable operating tool, i. can not be solved by the normal user by hand.

The structure of the lock 70 is off Fig. 2 and 11 can be seen, wherein Fig. 11 shows the lock seen from the inside of the device. The lock 70 has a body 71 which can be rotated about an axis perpendicular to the front of the device axis.

Normally, the body 71 is in a first position, which Fig. 2 and 11 is shown. In this position, a nose 72 attached to the body 71 projects toward the drawer 6 and prevents it from moving beyond the maximum extension position. The body 71 is held in this first position by the elastic force of a spring member 73.

By rotating the body 71 against the elastic force of the spring 73 along a rotational direction 74, the body 71 can be brought into its second position. In this position, the nose 72 releases the drawer 6, so that it can be pulled beyond the maximum extension position out of the device.

To rotate the body 71, there is a head 75 (FIG. Fig. 2 ), which allows a (with respect to the rotation) positive connection with the actuating tool. For this purpose, in the head 75, for example, and as in Fig. 2 illustrated, a slot may be provided, in which a tongue of the actuating tool can be inserted.

If the drawer 6 further pulled out after loosening the lock 70, so are the first Adapter unit 9 and the coupling parts 50, 51 accessible. In this position, however, the drawer 6 is still guided in the device, ie the user can release it to release the coupling parts 50, 51. To ensure safe guidance in this position, the distance A (see. Fig. 3 ) preferably amount to at least 10 cm between the first coupling part 50 of the adapter unit 9 located in the use position and the rear wall area 30 of the drawer 6.

The head 75 of the latch 70 is covered in the closed state of the drawer 6 of the front panel 77 of the drawer 6, see Fig. 2 , The front plate 77 forms the front portion 29 of the drawer. The head 75 is accessible only when the drawer 6 is pulled out slightly.

The mentioned actuating tool may e.g. be a screwdriver or wrench. Preferably, however, the tool is supplied as part of the washing machine.

A corresponding design is in Fig. 12 - 14 shown. In this embodiment, the washing machine has in addition to the supply drawer 6, a mixing drawer 80 to receive individual portions of detergent and mix with water. The mixing drawer 80 forms the above-mentioned mixing chamber 5. The mixing drawer 80 includes at least one tub (in the present embodiment, three baths 81, 82, 83 for pre-wash, main wash and fabric conditioners) sized to receive laundry washes , and which are completely emptied during the wash cycle.

In the mixing drawer 80, a first holder 84 for secure reception of the actuating tool 86 is formed. This operating tool 86, which in Fig. 14 is shown has at least one part which (with respect to rotation) can form a positive connection with the head 75 of the lock 70. In For example, in the embodiment shown, each of the upper corner portions 87 of the operating tool is suitable, which can each be inserted into the slot of the head 75.

If the operating tool 86 is stored in the first holder 84 in its "first position", it assumes no functional task in the mixing drawer 80. In the mixing drawer 80, however, a second holder 88 is additionally provided to support the operating tool 86 in a "second position". This second position is in the main wash tub 82. When the actuating tool 86 is in its second position, it forms a permeable side wall for this trough 82. The side wall is permeable because the actuating tool 86 has a recess 89 at its lower end, which in the second position is an outlet opening for the trough 82 forms (cf. Fig. 14 ).

The actuating tool 86 is used in its second position when a liquid detergent is to be used as detergent in the trough 82. It prevents a rapid drainage of the liquid detergent after filling, so that the majority of the detergent remains in the trough 82 until the main wash cycle. Only then is the tub 82 rinsed with water. In this case, a large part of the detergent in dilute form runs over the wall formed by the actuating tool 86 in the tub of the washing machine. The residual amount of diluted detergent (which is much thinner than the pure detergent) then passes relatively quickly through the recess 89 from.

In this way, the actuating tool 86 can be used on the one hand in the mixing drawer 80 and on the other hand for actuating the locking device 70.

Remarks:

In the execution after Fig. 1 For each storage container 7, 8 a separate delivery line 11 a, 11 b is shown. In principle, however, it is also conceivable to use a common delivery line for all storage containers 7, 8, for example if a diverter is used in the area of the adapter unit 9.

It can also be provided in the drawer 6 more than two reservoir. In this case, the adapter unit 9 is equipped with a corresponding number of suction tubes and level sensors.

The invention can also be applied to drawers 6, which have only a single reservoir.

While preferred embodiments of the invention are described in the present application, it should be clearly understood that the invention is not limited to these and may be practiced otherwise within the scope of the following claims.

Claims (20)

1. Washing machine with at least a storage container (7, 8) arranged in a drawer (6) for storing at least a detergent in a quantity which is sufficient for multiple washing cycles and with an extracting device for automatically extracting the detergent from the storage containers (7, 8),
   wherein the extraction device has an adapter unit (9) which is mounted from the top onto the storage container (7, 8) in a usage position and which has at least a suction pipe (36, 37) and at least a filling level sensor (38, 39), and
   wherein the suction pipe (36, 37) and the filling level sensor (38, 39) protrude from the top into the storage container (7, 8) in the usage position of the adapter unit (9),
   characterized in that a drain valve (65) is arranged inside the storage container (7, 8), by means of which an opening in a floor (24) of the storage container (7, 8) can be opened or closed, respectively.
2. Washing machine according to claim 1,
   wherein the drawer (6) has multiple storage containers (7, 8), and wherein the extraction device has multiple suction pipes (36, 37) and multiple filling level sensors (38, 39), which protrude from the top into the storage container (7, 8) in the usage position of the adapter unit (9).
3. Washing machine according to one of the preceding claims, wherein each filling level sensor (38, 39) has at least one, particularly two, electrodes (38a, 38b, 39a, 39b) which protrudes or protrude each, respectively, from the top into one storage container (7, 8).
4. Washing machine according to one of the preceding claims, wherein the entire adapter unit (9) is removable in one piece from the usage position by motion towards the top.
5. Washing machine according to one of the preceding claims, wherein the adapter unit (9) has a first coupling part (50), and wherein the washing machine has furthermore a second coupling part (51),
   wherein the first and the second coupling part (50, 51) are coupled to one another in order to form at least an extraction pipe for the at least one detergent from the at least one storage container (7, 8) and at least a signal line for the at least one filling level sensor (38, 39).
6. Washing machine according to claim 5,
   wherein the drawer (6) has two lateral side sections (21, 22) and a floor section (24) arranged at the bottom, which extend along a pull-out direction (28) of the drawer (6), and wherein the first coupling part (50) is arranged at the adapter unit (9), which is in usage, on one of the side sections (21, 22),
   and particularly wherein the first coupling part (50) at the adapter unit (9), which is in usage, has a distance of at least 10 cm from a rear wall area (30) of the drawer (6).
7. Washing machine according to claims 6,
   wherein the first coupling part (50) of the adapter unit (9), which is in usage, lies in an area (54) of the side section (21) which is shifted back with respect to the interior of the drawer, and particularly wherein the shifted back area (54) extends along the side section (21) up to a rear wall area (30) of the drawer (6).
8. Washing machine according to one of the claims 5 to 7, wherein each coupling part (50, 51) has a contiguous body with at least two pipe couplings (42, 43) and at least an electric connector (47).
9. Washing machine according to one of the preceding claims, wherein the adapter unit (9) is supported in the usage position on at least a vertical wall (21, 23) of the at least one storage container (7, 8) and forms with it a seal,
   wherein the seal has a first seal part (60) and a second seal part (62), wherein the first seal part (60) is formed by the adapter unit (9) and the second seal part (62) by the vertical wall (21, 13), or vice versa, and wherein the first seal part (60) has a groove (61) inside which a tongue of the second seal part (62) engages,
   and particularly wherein a width of the groove (61) and a thickness of the tongue are dimensioned such that the groove (61) touches the tongue on both sides.
10. Washing machine according to one of the preceding claims, wherein the at least one storage container (7, 8) is formed as a vat, wherein the drawer (6) has at least one cover (25) which covers the vat from the top, and wherein the cover (25) covers the adapter unit (9) is its usage position.
11. Washing machine according to one of the preceding claims, wherein each drain valve (65) has an actuation shaft (66) protruding through the respective storage container (7, 8) from the bottom (24) towards the top, and particularly wherein the opening can be opened or closed, respectively, by turning the actuation shaft (66) about a vertical axis.
12. Washing machine according to claim 11,
    wherein the actuation shaft (66) extends as maximum filling level indicator into an uppermost quarter of the height of the storage container (7, 8).
13. Washing machine according to one of the preceding claims, with an arrest (70) for limiting the pull-out movement of the drawer (6) in a maximum pull-out position.
14. Washing machine according to claim 13,
    wherein the adapter unit (9) is inaccessible in the maximum pull-out position of the drawer (6).
15. Washing machine according to one of the claims 13 or 14, wherein the washing machine has furthermore an actuation tool (86) which is coupled to the arrest (70) for opening the arrest (70).
16. Washing machine according to claim 15 with a mixing drawer (80) for receiving single portions of detergent and for mixing them with water, wherein at least a first support (84) for receiving the actuation tool (86) is arranged in the mixing drawer (80).
17. Washing machine according to claim 16,
    wherein a first and a second support (84, 88) is arranged in the mixing drawer (80), for supporting the actuation tool (86) in a first and a second position, wherein the actuation tool (86) forms in the second position a permeable side wall of a vat (82) of the mixing drawer (80), however doesn't form such a side wall in the first position.
18. Washing machine according to one of the claims 13 to 17, wherein the arrest (70) has a rotatable body (71) which is rotatable against an elastic force from a first position into a second position, wherein it frees the drawer (6) in the second position,
    and wherein a head (75) is arranged on the rotatable body (71), which is adapted for a positive fit connection with an actuation tool.
19. Washing machine according to one of the preceding claims with at least a mixing chamber (5) for mixing detergent and water und with at least a transport pipe (11a, 11b) for transporting detergent from the at least one storage container (7, 8) to the mixing chamber, wherein at least a part of the transport pipe (11a, 11b) is formed by a hose (12a, 12b) coupled to the adapter unit (9).
20. Washing machine according to claim 19,
    wherein a valve (14a, 14b) is arranged inside the mixing chamber at an opening of the transport pipe (11a, 11b), particularly a non-return valve.

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