FLUID-CONDUCTING HOUSEHOLD APPLIANCE

Description

[0001] The invention relates to a fluid-conducting household appliance according to claim 1.

[0002] Document DE 10 2012 103 684 A1 discloses a household appliance with a housing that includes a projector. The projector is arranged in the housing and projects a projection image onto an outer surface of the housing. In particular, two optical systems are assigned to the projector, which redirect a light beam emanating from the projector such that the light beam is guided into the interior of a door element of the household appliance. A projection image is projected onto an inner surface of a viewing window of the door element.

[0003] US 2012 / 0327201 A1 discloses another top-loading washing machine. The washing machine comprises a lid element, wherein the lid element has a display unit. A UV projection unit is arranged in a spoiler-like element formed in a rear region of the lid element of the washing machine, above the lid element, and projects an image onto the lid element.

[0004] CN 208 562 869 U describes a washing machine having a door unit. The door unit has an inner and an outer window element, with a projection unit and a reflection unit arranged on the inner window element so that the projection unit can project a projected image onto the outer window element.

[0005] EP 3 115 4797 A1 discloses a display unit for a fluid-conducting household appliance. The display unit comprises a projector unit and an adjustable reflection unit. The adjustable reflection unit is provided for improved adjustment of the display unit, so that a projection image is displayed at a different angle and / or different location on the display unit. CN 106 544 816 A describes a washing machine with a projection unit.

[0006] It is therefore an object of the invention to provide a fluid-conducting household appliance that displays visual information in a door unit of a fluid-conducting household appliance and provides a user with the familiar interface of a fluid-conducting household appliance.

[0007] The object of the invention is solved by the features of independent claim 1. Further advantageous embodiments of the invention are specified in the subclaims as well as in the description and the drawings.

[0008] According to one aspect of the invention, the object of the invention is achieved by a fluid-conducting household appliance. The fluid-conducting household appliance comprises a housing with a receptacle and an opening. Furthermore, the fluid-conducting household appliance comprises a door unit, wherein the door unit is provided for closing the opening, wherein the door unit comprises a viewing window and a window element. The window element is formed opposite the viewing window and, when the door unit is closed, protrudes at least partially into the receptacle. The viewing window is formed to be substantially transparent, such that the receptacle can be viewed when the opening is closed, wherein the door unit (13) comprises at least one frame element (27).Furthermore, the fluid-conducting household appliance comprises an electronic unit comprising at least one projection unit, wherein the at least one projection unit emits light such that visual information is visible on a projection surface, wherein the projection surface is provided in the region of the viewing window. Furthermore, an optical unit is provided, wherein the optical unit comprises at least one reflection element, wherein the optical unit is arranged in an upper region of the door unit such that the light emitted by the projection unit is reflected or can be reflected by the reflection element of the optical unit onto the projection surface in the region of the viewing window, wherein the projection unit (39) is arranged on the at least one frame element (28).

[0009] It should be noted that the emitted light can also be referred to as at least one light beam and / or at least one projection beam. The projection unit emits enough light or light beams and / or projection beams to render visual information, in words and / or writing, as well as in the form of an image and / or symbols. Other ways of displaying the visual information are conceivable.

[0010] Because the optical unit is located in the upper area of ​​the door unit, a user can still see into the receptacle when the door is closed, and visual information can be displayed on a desired projection surface. Thus, the user is not restricted in their view of the receptacle.

[0011] Advantageously, the reflection element is arranged in an upper region of the door unit in the region of the at least one frame element, wherein the at least one frame element is arranged substantially closer to the receiving container than the viewing window in a closed state of the door unit.

[0012] This design ensures that the user can see into the fluid-carrying household appliance at any time.

[0013] The reflective element preferably has mirror-like properties and is essentially non-transparent. The reflective element can be a mirror element or an element coated with a reflective surface, such as a film or the like.

[0014] The mirror-like properties of the reflection element are particularly well suited to redirecting the light emitted by the projection unit in order to make visual information visible or displayable on the projection surface.

[0015] In a preferred embodiment, the optical unit is connected to the at least one frame element, whereby the optical unit can be easily accommodated or integrated in the door unit.

[0016] Alternatively, it is also conceivable for the optical unit to be connectable to the at least one frame element. The optical unit can be connected to the at least one frame element in any desired manner. This allows, for example, easy replacement of the optical unit should it become damaged. This means that the optical unit is a separate component and can be connected to the at least one frame element.

[0017] It is conceivable that the optical unit can be welded and / or screwed to the at least one frame element and / or can be latched to the at least one frame element or can be locked to the at least one frame element. The optical unit comprises the reflection element, wherein the reflection element can be attached directly to the at least one frame element. The reflection element can also be welded or welded and / or screwed or screwed to the at least one frame element and / or locked to the at least one frame element.

[0018] Advantageously, the optical unit comprises a holding device, with the reflection element being arranged on the holding device. This ensures that the reflection element is firmly and stably arranged in the optical unit, so that the reflection element can withstand impacts that may occur when the door unit is closed.

[0019] The holding device of the optical unit is preferably formed integrally with the at least one frame element. The optical unit can be delivered and / or integrated into the production of the door unit or fluid-carrying household appliance as a prefabricated component, thereby reducing the number of manufacturing steps on a production line and minimizing potential assembly errors.

[0020] The holding device advantageously has a rear side which is arranged in the direction of the window element, wherein the rear side has at least one first region which comprises at least one first rib.

[0021] The at least one first rib serves to stiffen the holding device, thereby increasing the strength of the holding device component. The more first ribs are formed, the greater the stiffening of the holding device. The number of first ribs depends on the size of the holding device and the desired degree of stiffening of the holding device.

[0022] Advantageously, the holding device has a front side which is designed opposite the rear side in such a way that the front side is at least partially spaced further from the window element than the rear side of the holding device, wherein the front side has at least one second region which comprises at least one second rib.

[0023] The at least one second rib serves, analogously to the at least one first rib, to stiffen the component holding device. Furthermore, the inclusion of ribs can save material and shorten component production times, as, for example, the cooling of a component made of plastic can be reduced. It is therefore not necessary to fill an area of ​​the holding device with plastic, for example, which would result in long cooling times. This can further shorten production times.

[0024] The reflection element is preferably arranged on the front side of the holding device, wherein the at least one second rib has an elevation.

[0025] The raised portion is designed to slightly bend or curve the reflective element. This places tension on the reflective element in such a way that it can be securely and vibration-proof mounted on the mounting device. This ensures that the visual information displayed on the projection surface is clearly legible to the user at all times when the door unit is opened or the fluid-carrying household appliance is operated.

[0026] Advantageously, the reflection element can be attached to the holding device with at least one fastening means in such a way that the at least one second rib is at least partially covered.

[0027] For optical reasons, it is advantageous that a user, when taking a closer look at the fluid-carrying household appliance or the door unit, only sees the reflection element and not the at least one rib formed underneath.

[0028] Preferably, the reflection element has at least one first projection and the holding device has at least one first receiving opening, so that the at least one first projection of the reflection element can be inserted into the at least one first receiving opening, wherein the holding device has at least one second projection which holds the reflection element in position.

[0029] The at least one receiving opening of the holding device is compatible with the at least one projection of the reflective element. The reflective element can thus be easily attached to the holding device, and incorrect assembly can also be minimized. The at least one second projection of the holding device can be designed as a locking element. The reflective element is received or fastened to the holding device by means of the at least one second projection in a locking manner.

[0030] In an alternative embodiment, the optical unit is mounted on the window element. This eliminates the need for a retaining device, thus reducing or saving production costs.

[0031] Further features and advantages of the present invention will become apparent from the following description with reference to the drawings. Fig. 1 shows a front view of a fluid-conducting household appliance; Fig. 2 shows an exploded view of a door unit of a fluid-conducting household appliance; Fig. 3 shows a sectional view of an embodiment of a door unit of a fluid-conducting household appliance; Fig. 4a shows a sectional view of an embodiment of a door unit of a fluid-conducting household appliance with an enlarged projection unit; Fig. 4b shows a sectional view of an embodiment of a door unit of a fluid-conducting household appliance with an enlarged projection unit; Fig. 5 shows a schematic representation of light within a door unit of a fluid-conducting household appliance; Fig. 6a shows an embodiment of a reflection element; Fig. 6b shows an arrangement example of the reflection element; Fig. 7a shows a rear side of a holding device; Fig. 7b shows a front side of a holding device; Fig.8 shows a fluid-carrying household appliance, with an internal device and / or an external device.

[0032] In Fig. 1 A front view of a household appliance 1 is shown. The Fig. 1 The household appliance shown is a fluid-conducting household appliance 1, such as a washing machine, a washer-dryer or a tumble dryer, a dishwasher, a fully automatic coffee machine and / or a steamer and / or similar fluid-conducting household appliance. The exemplary embodiments are described below essentially with reference to the washing machine 3.

[0033] The fluid-conducting household appliance 1 or the washing machine 3 comprises a housing 5. A receptacle 6 is arranged in the housing 5, in which, in the present exemplary embodiment, utensils to be cleaned, for example laundry, are received or cleaned. Furthermore, the housing 5 has a front side 7 and side walls 9. An opening 11 is formed in the front side 7 of the housing 5. The opening 11 can be closed with a door unit 13. The door unit 13 is essentially rotatably attached to the housing 5. Furthermore, a dispenser tray 15 is shown indicated in an upper region of the front side 7 of the washing machine 3. Next to the dispenser tray 15, a switch 17 is arranged in an upper region of the front side 7 of the fluid-conducting household appliance 1. The switch 17 can also be designed as a type of push button or the like.The switch 17 essentially serves to switch the fluid-carrying household appliance 1 on or off or as a confirmation switch for confirming a program or a process.

[0034] In Fig. 2 An exploded view of a door unit 13 is shown. The door unit 13 is suitable for a fluid-conducting household appliance 1, in particular a washing machine 3. The door unit 13 has a viewing window 19, wherein the viewing window 19 can also be referred to as a viewing pane. The viewing window 19 is essentially transparent. A projection surface 20 is provided in the area of ​​the viewing window 19. The projection surface 20 can extend at least over a partial area 21 of the viewing window 19. However, it is also conceivable for the projection surface 20 to extend essentially over the entire viewing window 19 or at least over a large part of the viewing window 19. The projection surface 20 serves to display projection images 23. In Fig. 1 A projection image 23 is shown as an example. The projection image 23 shows in Fig. 1 For example, a washing program called "Easy Care" is shown, with a wash degree, a remaining running time, and a rotation speed of the receiving container 6 being displayed. However, it is also conceivable that additional information could be displayed. This information could be shown alongside the information already mentioned and / or on a further display level, which opens, for example, when an operating program has been selected.

[0035] Furthermore, the door unit 13 comprises at least one frame element 27. In the embodiment shown in Fig. 2 The door unit 13 comprises a first frame element 28a, a second frame element 28b, a window ring 31, a window element 33, and the viewing window 19. The window element 33 is arranged substantially between the first frame element 28a and the second frame element 28b. The window element 33 is substantially received in the second frame element 28b. The viewing window 19 is arranged on the first frame element 28a. The window element 33 and the viewing window 19 are arranged substantially opposite one another, wherein the window element 33 protrudes into the housing 5, in particular into the receptacle 6 of the fluid-conducting household appliance 1, when the door unit 13 is closed. The viewing window 19 is arranged substantially outside the housing 5 of the fluid-conducting household appliance 1 when the door unit 13 is closed. A cavity 35 is formed between the viewing window 19 and the window element 33.The viewing window 19 and the window element 33 are transparent. The viewing window 19 and the window element 33 can be made of glass and / or at least one polymer or similar material. For example, the viewing window can be made of at least one polymer, with the window element 33 being made of glass. Any desired configurations are possible.

[0036] The cavity 35 is essentially formed by the viewing window 19, the first frame element 28a, the second frame element 28b and the window element 33. In the cavity 35, an optical unit 37 for guiding a light 38 (exemplarily, inter alia, in Fig. 3 shown) onto the projection surface 20. An electronics unit 42 comprises a projection unit 39. The light 38 is generated by the projection unit 39 and can be emitted in the form of rays, in particular in the form of at least one light beam and / or projection beam. The projection unit 39 can be arranged, for example, with a holding unit 40 in the door unit 13. Preferably, the projection unit 39 is arranged in a lower region of the door unit 13. According to the invention, the projection unit 39 is arranged on the at least one frame element 27, in particular on the first frame element 28. The projection unit 39 will be discussed in more detail below.

[0037] The optical unit 37 comprises a reflection element 43. In the embodiment shown in Fig. 2 The optical unit 37 further comprises a holding device 41. However, the reflection element 43 can also be arranged in the door unit 13 without a holding device 41. This will be described in more detail below.

[0038] The optical unit 37 is arranged in the cavity 35 such that, when the door unit 13 is closed, an operator or user can preferably see into the receptacle 6 of the fluid-conducting household appliance 1. The optical unit 37 is preferably arranged in an upper region of the door unit 13. The optical unit 37 is arranged substantially opposite the projection unit 39. The optical unit 37 and the projection unit 39 are substantially received in the cavity 35 of the door unit 13. Furthermore, the projection surface 20 is substantially formed in the cavity 35.

[0039] Essentially, the projection unit 39 of the electronics unit 42 comprises a projector 45 and a computer unit 47. The computer unit 47 is provided for controlling the projector 45. The computer unit 47 is provided for calculating the projection image 23 to be emitted by the projector 45. Furthermore, the projection unit 39 comprises a control unit 49. The control unit 49 is provided for controlling the projector 45. The control unit 49 can be, for example, an LCoS control unit. The control unit 49 is provided for outputting a projection image 23 calculated by the computer unit 47 such that the projector 45 can display the projection image 23 by irradiating the optical unit 37 or the projection surface 20. To prevent overheating of the projection unit 39, a cooling unit 51 is formed in the projection unit 39.The cooling unit 51 is provided to cool at least one further component of the projection unit 39, such as the projector 45, the computer unit 47 and / or the control unit 49.

[0040] The window ring 31 essentially serves to hold the door unit 13 together, with the window ring 31 being designed primarily to define the design. For example, a handle element 32 can be formed on the window ring 31 if the handle element 32 is required or desired. In addition, the window ring 31 serves to secure the at least one frame element 27 and the window element 33. The window ring 31 is Fig. 2 designed such that the window ring 31 is formed to encompass or accommodate at least the first frame element 28a and the window element 33. The second frame element 28b can also be accommodated in the window ring 33.

[0041] In Fig. 3 1 shows a sectional view of a possible embodiment of a door unit 13 of a fluid-conducting household appliance 1. The optical unit 37, in particular the holding device 41 of the optical unit 37, is attached here, for example, in an upper region of the window element 33. An operator is thus still able to see through the viewing window 19 and the window element 33 into the receiving container 6. However, it is also conceivable that the reflection element 43 is attached directly to the window element 33 and / or to the at least one frame element 27 of the door unit 13. The optical unit 37 can be arranged or attached to the window element 33 and / or the at least one frame element 27 using various fastening and / or bonding methods or bonding techniques.

[0042] The optical unit 37 is in Fig. 3 arranged in an upper region of the window element 33 and aligned such that light 38 emitted by the projection unit 39 is directed and / or reflected onto the projection surface 20. For example, the projection surface 20 is arranged in an upper region of the viewing window 19. However, it is also conceivable that the projection surface 20 is formed substantially on the entire viewing window 19. The projection image 23 is projected onto an inner side 52 of the viewing window 19, which is directed toward the receiving container 6.

[0043] Fig. 4a und Fig. 4b show a sectional view of an embodiment of a door unit 13 of a fluid-conducting household appliance 1 with an enlarged projection unit 39. The projection unit 39 is preferably arranged between the first frame element 28a and the second frame element 28b. The projection unit 39 is preferably arranged in a lower region of the first frame element 28a. The projection unit 39 is preferably arranged in a lower region on the first frame element 28a. The projection unit 39 can be attached to the first frame element 28a with the holding unit 40. The projection unit 39 can be arranged on the first frame element 28a in such a way that the projection unit 39 is arranged in the cavity 35 or at least projects into the cavity 35 and / or is arranged outside the cavity 35.

[0044] If the projection unit 39 is arranged outside the cavity 35, a frame opening 53 or a frame recess is provided in the first frame element 28a or in the at least one frame element 27. The frame opening 53 ensures that the light 38 can be transmitted or projected by the projection unit 39 in the direction of the optical unit 37. The optical unit 37 is arranged substantially opposite the projection unit 39, so that, as already mentioned above, light 38 generated and output by the projection unit 39 is guided via the optical unit 37 onto the projection surface 20. It should be mentioned again that light 38 can also be referred to as light rays and / or projection rays. The components of the projection unit 39 described above are shown in the Fig. 4a und 4b also arranged in a lower region of the door unit 13 or of the at least one frame element 27.

[0045] In Fig. 4b A positioning element 50 is formed. The positioning element 50 is formed in the region of the projection unit 39. The positioning element 50 is preferably formed on the at least one frame element 27. The positioning element 50 can be formed as a positioning pin. The positioning element 50 is provided for positioning the electronics unit 42 and / or the projection unit 39.

[0046] In Fig. 5 1 shows, by way of example, a schematic representation of light 38, in the form of a visible beam and / or a light cone, within the door unit 13 of a fluid-conducting household appliance 1. Shown here are some elements of the door unit 13, such as the viewing window 19, the projection unit 39, the reflection element 43 of the optical unit 37, and the light 38 emitted by the projection unit 39. The projection unit 39 emits light 38 in the direction of the reflection element 43. The reflection element 43 reflects the light 38 such that the light 38 is directed or reflected onto the inner side 52 of the viewing window 19. The inner side 52 here represents, in particular, the projection surface 20, with information being visually displayed, for example in the form of projection images 23, on or on the projection surface 20 or the inner side 52 of the viewing window 19.

[0047] An embodiment of a reflection element 43 is shown in Fig. 6a The reflection element 43 can have any desired shape. Preferably, the reflection element 43 has a substantially square shape. On one side, the reflection element 43 has at least one first projection 54. Preferably, the reflection element 43 has two first projections 54. In order to minimize or prevent incorrect assembly, the two first projections 54 are designed differently. For example, one first projection 54 is larger than the other first projection 54. Additional first projections 54 are conceivable.

[0048] The reflection element 43 has at least one reflective coated surface 55. Furthermore, the reflection element 43 is designed to be substantially non-transparent. The coated surface 55 can consist of a film and / or be a mirror-like element. The reflection element 43 should have at least one reflective property so that the light 38 is reflected.

[0049] In Fig. 5 The at least one frame element 27 is not shown for clarity. However, it is clear from the embodiments already described above that the electronics unit 42, in particular the projection unit 39, and the optical unit 37 are arranged on the at least one frame element 27 or connected to the at least one frame element 27. The electronics unit 42 and the optical unit 37 are preferably arranged on the first frame element 28a or connected to the first frame element 28a.

[0050] In Fig. 6b An arrangement example of the reflection element 43 is shown. The reflection element 43 is arranged on or in the holding device 41. The holding device 41 has at least one receiving opening 56. The at least one receiving opening 56 is suitable for receiving the at least one first projection 54. It goes without saying that the holding device 41 has at least as many receiving openings 56 as the reflection element 43 has first projections 54. Furthermore, the at least one receiving opening 56 is adapted to the at least one projection 54 of the reflection element 43, so that, for example, a larger receiving opening 56 corresponds to or is compatible with a larger projection 54 in order to minimize assembly errors, as already mentioned above.

[0051] The holding device 41 in Fig. 6b is preferably formed integrally with the at least one frame element 27. However, it is also conceivable for the holding device 41 to be attachable to the at least one frame element 27. For example, the holding device 41 can be welded and / or screwed and / or adhesively bonded and / or snapped to the at least one frame element 27. Furthermore, other connection options are conceivable. The holding device 41 is preferably adapted to a contour of the window element 33.

[0052] The holding device 41 further comprises at least one second projection 57. The at least one second projection 57 is preferably formed on a side opposite the side of the reflection element 43 on which the at least one first projection 54 is formed. The at least one second projection 57 is preferably designed as a type of locking lug. The reflection element 43 is inserted with its at least one first projection 54 into the at least one receiving opening 56 of the holding device 41 and is clipped or snapped into the holding device 41, for example by means of the at least one second projection 57 of the holding device 41. The at least one second projection 57 serves to hold, retain, fix and / or vibration-proof receive the reflection element 43 on or in the holding device 41. Further fixing elements are conceivable.

[0053] In Fig. 7a a rear side 59 of a holding device 41 is shown. The rear side 59 is arranged in the direction of the window element 33. Furthermore, the rear side 59 of the holding device 41 comprises at least one first region 61. The at least one first region 61 comprises at least one first rib 63. In the exemplary embodiment in Fig. 7a The at least one first region 61 comprises a plurality of first ribs 63. The first ribs 63 are provided for stiffening the holding device 41. The at least one first region 61 of the rear side 59 of the holding device 41 is visible through the window element 33 when the door unit 13 of the fluid-conducting household appliance 1 is open.

[0054] The at least one first rib 63 extends at least partially over an upper partial region 65 of the rear side 59. The upper partial region 65 is arranged in the region of the at least one frame element 27 and the window element 33. A cover element 69 is provided in a lower partial region 67 of the rear side 59. The lower partial region 67 adjoins the upper partial region 65 and is arranged essentially in the region of the window element 33.

[0055] The at least one first rib 63 and the cover element 69 are visible through the window element 33 when the door unit 13 is open. The cover element 69 is provided primarily for aesthetic reasons and can be connected to the holding device 41, for example, via snap-in connections. Preferably, the shape of the cover element 69 is adapted to the shape of the window element 33, so that no visually disturbing spaces arise between the window element 33 and the holding device 41.

[0056] In Fig. 7b a front side 71 of a holding device 41 is shown. The front side 71 is formed opposite the rear side 59 of the holding device 41 such that the front side 71 is at least partially spaced further from the window element 33 than the rear side 59 of the holding device 41. The front side 71 comprises at least one second region 73. The at least one second region 73 comprises at least one second rib 75. In the exemplary embodiment in Fig. 7b the at least one second region 73 comprises a plurality of second ribs 75. The second ribs 75 are provided for stiffening the holding device 41.

[0057] The at least one second rib 75 comprises at least one elevation 77. The at least one elevation 77 is preferably formed in a central region of the at least one second rib 75. In the case of a plurality of second ribs, it is preferably provided that the at least one elevation 77 is formed in a central region of the plurality of second ribs 75. The at least one second rib 75 is at least partially covered by the reflection element 43. In other words, the reflection element 43 is attached to the holding device 41 with fastening means such that the at least one second rib 75 is covered by the reflection element 43. The at least one rib 75 is in the exemplary embodiment in Fig. 7b visibly. This is merely for clarity. As already mentioned above, the reflection element 43 is essentially non-transparent.

[0058] In Fig. 8 A further embodiment of a fluid-carrying household appliance 1 is shown. The fluid-carrying household appliance 1 has, in the Fig. 8 The embodiment shown has an internal device 91 and / or external device 93 for communicating between an operator or user and a fluid-conducting household appliance 1. The internal device 91 and / or external device 93 can be a tablet, smartphone, or the like. It is important that the internal device 91 and / or the external device 93 includes a touch-sensitive surface and / or a touch-sensitive display for displaying and setting operating and / or program parameters.

[0059] The fluid-conducting household appliance 1 has a communication unit 95. The communication unit 95 is connected to the internal device 91 and / or the external device 93 and communicates with the internal device 91 and / or the external device 93. The communication unit 95 is configured such that at least projection images 23 can be transmitted to the internal device 91 and / or the external device 93. As a result, the projection surface 20 of the fluid-conducting household appliance 1 and / or the washing machine 3 can be displayed on the internal device 91 and / or the external device 93. However, it is also conceivable that the external device 93 can be attached to the fluid-conducting household appliance 1 or that an internal device 91 is formed in and / or on the fluid-conducting household appliance 1. The internal device 91 can have similar properties to the external device 93.

[0060] Furthermore, the communication unit 95 is configured such that the communication unit 95 receives input commands from the internal device 61 and / or external device 93 and transmits the input commands to a control device 97. The control device 97 serves to control the fluid-conducting household appliance 1, but also to control the projection unit 39 and its components. This provides the operator with the option of communicating with the fluid-conducting household appliance 1 and / or the washing machine 3 without directly entering an input command on the fluid-conducting household appliance 1 and / or the washing machine 3.

[0061] The external device 95 can be a smartphone or a tablet on which the projection images 23 can be graphically displayed. Operating the fluid-conducting household appliance 1 via the external device 93 is also conceivable. The internal device 91 can be a processor. However, it is also conceivable that the internal device 91 is a smartphone or a tablet that is detachably connected to the fluid-conducting household appliance 1 or is permanently connected to the fluid-conducting household appliance 1. Properties of the internal device 91 can be identical to properties of the external device 93.

[0062] The communication unit 95 can be arranged, for example, in the door unit 13 of a fluid-conducting household appliance 1 or of a household appliance 1. However, the communication unit 95 can also be arranged at any other mounting location in the door unit. Advantageously, the communication unit 95 should be arranged in the area of ​​the projection unit 39. However, it is also conceivable that the communication unit 95 is integrated into the projection unit 39. The communication unit 95 can be connected to the projection unit 39 wirelessly and / or via an electrical connection. 49.Control unit 50.Positioning element 51.Cooling unit 52.Inside 53.Frame opening 54.First projection 55.Coated surface 56.Receiving opening 57.Second projection 59.Back 61.First area 63.First rib 65.Upper section 67.Lower section 69.Cover element 71.Front 73.Second area 75.Second rib 77.Elevation 91.internal device 93.external device 95.communication unit 97.control device

Claims

1. Fluid-conducting household appliance (1), wherein the fluid-conducting household appliance (1) comprises: a housing (5) with a receiving container (6) and an opening (11); a door unit (13), wherein the door unit (13) is provided to close the opening (11), wherein the door unit (13) comprises a viewing window (19) and a window element (33), wherein the window element (33) is embodied opposite the viewing window (19) and at least partially protrudes into the receiving container (6) when the door unit (13) is closed, wherein the viewing window (19) is substantially transparent so that the receiving container (6) can be viewed when the opening (11) is closed, wherein the door unit (13) comprises at least one frame element (27); an electronic unit (42) comprising at least one projection unit (39), wherein the at least one projection unit (39) emits light (38) such that visual information is visible on a projection surface (20), wherein the projection surface (20) is provided in the region of the viewing window (19); an optical unit (37), wherein the optical unit (37) is arranged in an upper region of the door unit (13) such that the light (38) emitted by the projection unit (39) is reflected by the reflection element (43) of the optical unit (37) onto the projection surface (20) in the region of the viewing window (19), characterised in that the projection unit (39) is arranged on the at least one frame element (27).

2. Fluid-conducting household appliance (1) according to claim 1, characterised in that the reflection element (43) is arranged in an upper region of the door unit (13) in the region of the at least one frame element (27), wherein the at least one frame element (27) is arranged substantially closer to the receiving container (6) than the viewing window (19) when the door unit (13) is closed.

3. Fluid-conducting household appliance (1) according to claim 1 or 2, characterised in that the reflection element (43) has mirror-like properties and is embodied as substantially non-transparent.

4. Fluid-conducting household appliance (1) according to one of the preceding claims, characterised in that the optical unit (37) is connected to the at least one frame element (27).

5. Fluid-conducting household appliance (1) according to one of the preceding claims, characterised in that the optical unit (37) can be connected to the at least one frame element (27).

6. Fluid-conducting household appliance (1) according to one of the preceding claims, characterised in that the optical unit (37) comprises a holding apparatus (41), wherein the reflection element (43) is arranged on the holding apparatus (41).

7. Fluid-conducting household appliance (1) according to claim 6, characterised in that the holding apparatus (41) of the optical unit (37) is embodied in one piece with the at least one frame element (27).

8. Fluid-conducting household appliance (1) according to claim 6 or 7, characterised in that the holding apparatus (41) has a rear side (59) arranged in the direction of the window element (33), wherein the rear side (59) has at least one first region (61) comprising at least one first rib (63).

9. Fluid-conducting household appliance (1) according to claim 6 to 8, characterised in that the holding apparatus (41) has an anterior side (71) embodied opposite the rear side (59) such that the anterior side (71) is at least partially spaced further apart from the window element (33) than the rear side (59) of the holding apparatus (41), wherein the anterior side (71) has at least one second region (73) comprising at least one second rib (75).

10. Fluid-conducting household appliance (1) according to claim 9, characterised in that the reflection element (43) is arranged on the anterior side (71) of the holding apparatus (41) and the at least one second rib (75) has an elevation (77).

11. Fluid-conducting household appliance (1) according to claim 9 or 10, characterised in that the reflection element (43) can be attached to the holding apparatus (41) by at least one fastening means such that the at least one second rib (75) is at least partially covered.

12. Fluid-conducting household appliance (1) according to one of claims 7 to 11, characterised in that the reflection element (43) has at least one first projecting part (54) and the holding apparatus (41) has at least one first receiving opening (56) such that the at least one first projecting part (54) of the reflection element (43) can be introduced into the at least one first receiving opening (56), wherein the holding apparatus (41) has at least one second projecting part (57) that holds the reflection element (43) in position.

13. Fluid-conducting household appliance (1) according to claim 1, characterised in that the optical unit (37) is arranged on the window element (33).