WO2017178159A1

WO2017178159A1 - Door for a household appliance and household cooking appliance

Info

Publication number: WO2017178159A1
Application number: PCT/EP2017/055704
Authority: WO
Inventors: Verena Busalt; Jacob Lechner; Tobias Schmidt
Original assignee: BSH Hausgeräte GmbH
Priority date: 2016-04-14
Filing date: 2017-03-10
Publication date: 2017-10-19
Also published as: DE102016206324A1; EP3443268A1

Abstract

The invention relates to a door (2) for a household cooking appliance (1), comprising has a door body (7), a handle (8) which is secured to the door body (7), a lighting device (10) which is designed to illuminate a cooking area (3) of the household cooking appliance (1), and a light deflection device (11) which is designed to deflect light beams (12) emitted by the lighting device (10) in order to guide them to the handle (8). The invention also relates to a household cooking appliance (1).

Description

Door for a household cooker and household cooker

The present invention relates to a door for a household cooking appliance. Furthermore, the invention relates to a Haushaltsgargerät with such a door.

A household cooker such as an oven, a cavity appliance, a smoke oven, a microwave oven, a microwave combination oven or a steamer is usually used for food preparation. In household cooking appliances of this type, a food is exposed to a temperature which is generally higher than a room or ambient temperature. This can be done in a specially designated space, especially a cooking chamber. A cooking chamber is usually closed with a door. Furthermore, it is common for such a door to have a handle that facilitates handling of the door. DE 10 2010 003 103 A1 describes a household appliance with a door and a handle formed on the outside of the door, wherein the handle has a handle bar, the inside of which faces the outside of the door and the inside is spaced from the outside of the door, wherein at least one light source is arranged in the handle, whose light can be emitted via the inside of the handlebar.

DE 10 2010 003 898 A1 describes a door handle for a domestic appliance, which has a handle bar, which is arranged on at least one holding element, with which the door handle can be attached to an outer side of the door, and with a lighting device, wherein a signal transmission device of the Lighting the handlebar and / or for displaying information on the handle bar formed lighting device extends at least in the holding element.

Against this background, an object of the present invention is to provide an improved door for a Haushaltsgargerät.

Accordingly, a door for a Haushaltsgargerät is proposed. The door comprises a door body, a handle attached to the door body, a lighting device, which is adapted to illuminate a cooking chamber of the Haushaltsgargeräts, and a Lichtumlenkeinrichtung, which is adapted to redirect light emitted from the illumination means light beams to guide them to the handle.

By the light of the illumination device is used to illuminate a cooking chamber on the one hand and on the other hand to illuminate or illuminate the handle, can be dispensed with a separate second illumination device for lighting or illuminating the handle.

In the present case, a "door body" is to be understood as meaning a body which, in the case of a closed door, forms a wall to the cooking chamber which is part of the door and does not belong to a muffle of the household appliance has at least one light source. In this case, a light source can emit electromagnetic radiation, in particular light beams, having at least one wavelength that is visible to the human eye. The light source may be, for example, an LED unit. In this case, a "cooking space" is to be understood as meaning a chamber or locality which is intended to accommodate at least one object to be heated, in particular a foodstuff.A "light-deflecting device" is understood here to mean a device which guides light rays in accordance with a closed optical system and / or a beam direction of the light beams changes. In the present case, a "closed optics" is to be understood as meaning a channel or solid body which guides light beams between a light beam inlet and a light beam outlet The illumination device and / or the light deflection device may be arranged completely or in sections in the door body a door body outside, wherein the guided to the handle light rays illuminate the door body outside at least in sections.

The outside of the door body is in particular the side of the door which is remote from the cooking chamber and / or is formed as a front side of the household cooking appliance. Preferably, the handle is connected to the door body outside or a front side. The door body can have a window, in particular made of black glass, which allows a view into the cooking chamber. The door body has a door body inside, the facing the cooking chamber. An at least partially illuminated door body outside is on the one hand very well visible in a dark room, on the other hand, a high-quality appearance of the door is provided. Furthermore, the lighting can be used as an optical signal for a user. According to a further embodiment, the light beams are diverted so that they illuminate the door body outside at least in sections in the form of a light cone.

In the present case, "light cone" is to be understood as meaning a light beam geometry which has a base area at its exit parts, a projection area onto which the light beams impinge being greater or smaller than the base area An advantage of this embodiment is that illumination can be dimensioned in a targeted manner The exterior of the door outer can also be fully illuminated, or even surrounding areas outside the door, such as the floor and / or adjacent devices, can be illuminated.

According to a further embodiment, the handle has a handle inside with a surface for reflecting the light rays towards the outside of the door body. The handle inside is in particular facing the door body outside. The light beams of the illumination device are deflected by means of the light deflecting device and directed to the handle, wherein the light rays illuminate the grip inside and are reflected on the handle inside towards the outside of the door body so that the outside of the door body is illuminated at least in sections. The surface of the inner handle side may have special reflection properties, in particular by means of a surface structure and / or a curvature of the surface.

According to another embodiment, the handle comprises a light-emitting means for projecting the light rays toward the door body outside.

By "light-emitting means" is meant in the present case a device which picks up and emits light beams, for example a light-emitting means may comprise an optical waveguide and / or glass body, in particular a glass rod Illuminating means are deflected by means of the light-deflecting device and guided to the handle, the handle comprising the light-emitting means. This preferably has at least one light inlet region, in particular two light inlet regions, wherein at least a part of the light rays are projected and / or scattered towards the outside of the door body at least with the aid of a light outlet region. The Lichtauslassbereich here is facing the door body outside.

According to a further embodiment, the light-emitting means is embedded in the handle such that a projection geometry of the light beams is predetermined. An embedding of the light-emitting means in the handle leads to a component integration and allows a harmonious design. Furthermore, the light-emitting means is at least partially surrounded by a handle material. In this case, the non-surrounded area is preferably directed to the door body outside and emits light rays in the direction of the same. The handle material may be opaque and / or translucent and / or partially translucent. The handle inner side and / or at least the light outlet region of the light-emitting means preferably have a rounded surface.

According to a further embodiment, the handle has a handle bar and two holding elements, wherein the handle bar is fastened by means of the holding elements on the door body.

In the present case, a "grip rod" is to be understood as meaning an elongate solid body which has an arbitrary cross-sectional geometry which does not have to be constant along the length The term "holding element" in the present case is to be understood as meaning a solid having an arbitrary shape and having two connecting cross-sections. The retaining element is a fastening element. Of course, a holding element of this type can be molded onto a handle bar, that both can be regarded as a body. The holding elements are preferably connected at one end to the handle bar and at the other end to the door body, in particular to the door body outside. According to a further embodiment, the light-emitting means extends continuously along the handle bar between the holding elements.

In this case, "continuous" means a light-emitting means section that extends without interruption between the holding elements, which has the advantage that an uninterrupted light cone illuminates the door body outside, at least in sections, and a high-quality feel of the light-emitting means section is realized the light-emitting means extends within the holding elements in the direction of the door body.

In this case, the light emission means can be completely surrounded on its lateral surface by the respective holding element, so that there is a closed appearance. Furthermore, the light-emitting means may be partially surrounded by the respective holding element on its lateral surface, so that the lateral surface of the light-emitting means, which is not surrounded by the holding element, emits or illuminates light rays.

According to a further embodiment, the light-emitting means extends into the door body.

Preferably, the light-emitting means is U-shaped, with two parallel Lichtabstrahlmittelabschnitte extend within the holding elements and a Lichtabstrahlmittelabschnitt disposed perpendicular thereto, extending along the handle bar.

According to a further embodiment, the light deflection device has at least one reflection element for deflecting the light rays to the handle.

By a "reflection element" herein is meant a body having an area adapted to direct incident light rays in a different direction Reflection element deflected by 30, 45, 60 or 90 °. According to a further embodiment, the light deflection device has at least one light guide for deflecting the light rays to the handle.

Preferably, the light guide is a device that captures light rays at a light inlet and emits a light outlet again. In contrast to a reflection surface, a light beam is captured at one "location" and released again at another "location", which can result in an angle change. Particularly preferably, at least one light guide is connected by means of an optical waveguide outlet with the light-emitting means, so that the light rays are "fed" directly into the light-emitting means.

According to a further embodiment, the light deflection device is adapted to deflect a direction of the light rays by an angle which exists between a door body plane and a grip plane. In the present case, a "handle plane" is to be understood as meaning a plane that runs parallel to the inside of the door body. "A" handle plane "is understood here to mean a plane which is formed from a longitudinal axis of the handle bar and at least one longitudinal axis of a holding element. The light deflecting device deflects the light rays from an orientation in which they are emitted toward the handle. The angle of this deflection is preferably between 50 and 130 °.

Furthermore, a household cooking appliance with a cooking space and such a door for closing the cooking space is provided.

The Haushaltsgargerät includes a muffle enclosing the cooking chamber, wherein the cooking chamber is closed by means of the door. According to a further embodiment, the household cooking appliance further comprises a control device for controlling the lighting device, wherein the control device is adapted to change an intensity or wavelength of the light beams depending on a state or a state change of the household cooking appliance. In the present case, a "control device" is to be understood as meaning a device which can influence the illumination device, in particular the light source, for example, a control device can be used as a control device. "State or change of state of the domestic device" means in the present case an arrival and / or or switching off the household appliance and / or a heating phase and / or a temperature reached and / or a temperature range and / or a time and / or a time range and / or an operation on the device. By means of the change in the intensity of the light beams, it is preferable to realize an upward and / or downward dimming of the light beams guided to the handle or of the light conducted to the handle. At the same time the lighting of the cooking chamber can be dimmed up and down. A change in the wavelength of the light beams causes a change in color perception of the illumination.

According to a further embodiment, the household cooking appliance further comprises a control device for controlling the lighting device, wherein the control device is adapted to activate and / or deactivate emitting of the light beams depending on a state or a state change of the household cooking appliance.

It is preferably the one described above and not an additional control device. By activating and deactivating a pulsating and / or flashing light can be generated, so that the door body outside and / or the cooking chamber is illuminated accordingly.

According to a further embodiment, the household cooking appliance further comprises a control device for controlling the illumination device, wherein the control device is configured to execute a fixed lighting program.

It is preferably the one described above and not an additional control device. The light program preferably forms a so-called Breathing Light. Furthermore, by means of the lighting program the user can be requested to open and / or close the door. In a particularly preferred embodiment, the door or Haushaltsgargerät on a device for generating acoustic signals, wherein the control device is adapted to additionally generate acoustic signals in response to a state or a change in state of Haushaltsgargeräts. Preferably, the Haushaltsgargerät is an oven, a Cavity device, a smokehouse, a microwave oven or a microwave combination oven.

Further possible implementations of the invention also include not explicitly mentioned combinations of features or embodiments described above or below with regard to the exemplary embodiments. The skilled person will also add individual aspects as improvements or additions to the respective basic form of the invention.

Further advantageous embodiments and aspects of the invention are the subject of the dependent claims and the embodiments of the invention described below. Furthermore, the invention will be explained in more detail by means of preferred embodiments with reference to the attached figures.

Fig. 1 shows a schematic sectional view of an embodiment of a

Haushaltgargeräts;

Fig. 2 shows a schematic partial sectional view through an embodiment of a door for a Haushaltsgargerät;

FIG. 3 shows a schematic perspective view of the handle according to FIG. 2; FIG.

FIG. 4 shows the handle according to FIG. 3 in an exploded view; FIG. and

FIG. 5 schematically shows a cross section of the handle according to FIG. 3.

In the figures, the same or functionally identical elements have been given the same reference numerals, unless stated otherwise.

Fig. 1 shows a schematic sectional view of a Haushaltsgargeräts 1 with a door 2. The Haushaltsgargerät 1 may be an oven, a Cavity device, a smokehouse, a microwave oven or a microwave combination oven. The Haushaltsgargerät 1 comprises a cooking chamber 3, which is enclosed by a sleeve or muffle 4. The muffle 4 is closed by means of the door 2. The muffle 4 has in particular a cuboid geometry. The door 2 is provided by means of a hinge, in particular a hinge joint 5, on the Haushaltsgargerät 1 pivotally opposite the muffle 4. The hinge joint 5 connects the door 2 with the muffle 4, so that the door 2 is pivotable from top to bottom in the direction of a ground plane 6. Alternatively, the door 2 may be provided laterally pivotable. The door 2 comprises a door body 7 and a handle 8 which is fixed to the door body 7 by means of at least one fastening element 9, a lighting device 10 which is adapted to illuminate the cooking chamber 3, and a Lichtumlenkeinrichtung 1 1, which is adapted to redirect light beams 12 emitted by the lighting device 10 in order to guide them to the handle 8. The door body 7 comprises a window 13, in particular of glass or black glass, which allows a view into the cooking chamber 3. Furthermore, the door body 7 has a door body outer side 14, which is preferably a visible side or a user-facing side in the closed state, and a door body inner side 15, which faces the cooking chamber 3 and encloses this with the muffle 4 on.

The lighting device 10 and the Lichtumlenkeinrichtung 1 1 are arranged within the door body 7, wherein a portion of the light beams 12 illuminates the cooking chamber 3 and another part of the light beams 12 is deflected by means of the Lichtumlenkeinrichtung 1 1 and directed to the handle 8. The lighting device 10 is not visible to a user in the closed state of the door 2, so that there is a closed look and only the illumination of the cooking chamber 3, the handle 8 and the door body outside 14 is perceptible. Preferably, with the door 2 closed, the light beams 12 have an orientation which is perpendicular to the ground plane 6, wherein the light beams 12 are deflected by preferably 90 ° by means of the light deflection device 1 1 so that they radiate parallel to the bottom planes 6 and in the direction of the handle 8 , The handle 8 has a handle inner side 16 which is illuminated by the guided to the handle 8 light beams 12, wherein a surface of the handle inside 16 at least part of the light rays 12 toward the door outer body side 14 reflects and illuminates them at least in sections.

In a preferred embodiment, the illumination device 10 comprises a first light source, in particular an LED unit, the light beams 12 directly or by means of Lichtumlenkeinrichtung 1 1 towards the handle 8 emitted, and a second light source, in particular an LED unit that illuminates the cooking chamber 3.

2 shows a schematic partial view of a section through an embodiment of a door 2 with a handle 8. The light beams 12 are in the door body 7 by a first reflection element 17 at a first angle and then by a second reflection element 18 by a second Angle deflected so that the light beams 12 are passed to the handle 8 after the two deflections. The two angles together are preferably 90 °. As a result of the deflection, a "Neff Light" already present in the door 2 is preferably fed into the handle 8.

3 shows a perspective view of a handle 8. The handle 8 comprises a handle bar 19, a first holding element 20, an identical second holding element 21 and a Lichtabstrahlmittel 22, wherein the holding elements 20 and 21 are each attached to one end of the handle bar 19 so that the handle 8 is U-shaped. The Lichtab- blasting agent 22 extends along the handle bar 19 between the support members 20 and 21 throughout and extends according to the U-shape of the handle 8 in the holding elements 20 and 21 toward a respective connection cross-section 23 and 24. By means of connecting cross-sections 23rd and 24, the handle 8 is attached to the door body 7. The holding elements 20 and 21 together form the fastening element 9.

FIG. 4 shows the handle 8 according to FIG. 3 in an exploded view. The handle bar 19 and the Lichtabstrahlmittel 22 have a U-shape. In addition, the light emitting means 22 has a circular cross-sectional outer contour 25. The holding elements 20 and 21 are each formed as hollow profiles, wherein each corner region is formed as a negative form of Lichtabstrahlmittels 22, so that the Lichtabstrahlmittel 22 is bordered in sections. The light-emitting means 22 is preferably a light guide, referred to as

Glass rod is formed.

FIG. 5 shows schematically a cross-section of a handle 8 according to FIG. 3. In this case, the grip rod 19 has a cross-section which forms a negative shape of the circular

Cross-sectional outer contour of the Leuchtabstrahlmittels 25 at least partially, wherein the Lichtabstrahlmittel 22 is enclosed in this negative mold. Thus, a part of an outer surface of the Lichtabstrahlmittels 22 of the handle bar 19 faces and of surrounded a material of the handle bar 19. Another part of the outer lateral surface of the Lichtabstrahlmittels 22 is not surrounded by the material of the handle bar 19 and preferably the door body outer side 14 faces, so that a light cone 26 is emitted by means of the same lateral surface, the light cone 26 preferably at least partially illuminates the door body outer side 14. In addition, each of the holding elements 20 and 21 is perpendicular to the handle bar 19. In addition, a portion of the Lichtabstrahlmittels 22 from the holding elements 20 and 21 out, which preferably extends into the door body 7 and is arranged at its end to light beams 12 in to couple in the light-emitting means 22. Although the present invention has been described with reference to embodiments, it is variously modifiable.

Used reference signs:

1 household cooking appliance

2 door

3 cooking space

4 muffles

5 hinge joint

6 floor level

7 door body

8 handle

9 fastener

10 lighting device

1 1 light deflection device

12 beams of light

13 windows

14 door body exterior

15 inside of the door

16 handle inside

17 electional element

18 reflection element

19 handle bar

20 holding element

21 retaining element

22 light-emitting means

23 connecting cross section of the first holding element

24 connection cross section of the second holding element

25 cross-sectional outer contour of the Leuchtabstrahlmittels

26 light cones

Claims

Door (2) for a household appliance (1), comprising a door body (7), a handle (8) fixed to the door body (7), a lighting device (10) adapted to provide a cooking space (3) of the Haushaltsgargeräts (1), and a Lichtumlenkeinrichtung (1 1), which is adapted to redirect of the illumination device (10) light beams (12) to direct them to the handle (8).

Door according to claim 1, characterized in that the door body (7) has a door body outer side (14), wherein the light beams (12) guided to the handle (8) illuminate the outer door body (14) at least in sections.

Door according to claim 2, characterized in that the light beams (12) are diverted so that they illuminate the door body outer side (14) at least in sections in the form of a light cone (26).

Door according to claim 2 or 3, characterized in that the handle (8) has a handle inner side (16) with a surface for reflecting the light beams (12) towards the door body outside (14).

Door according to one of claims 2 to 4, characterized in that the handle (8) comprises a light emitting means (22) for projecting the light beams (12) towards the door body outside (14).

Door according to claim 5, characterized in that the light-emitting means (22) is embedded in the handle (8) such that a projection geometry of the light beams (12) is predetermined.

Door according to claim 5 or 6, characterized in that the handle (8) has a handle bar (19) and two holding elements (20, 21), wherein the handle bar (19) by means of the holding elements (20, 21) on the door body (7 ) is attached.

8. Door according to claim 7, characterized in that the Lichtabstrahlmittel (22) along the handle bar (19) between the holding elements (20, 21) extends continuously and / or within the holding elements (20, 21) in the direction of the door body (7 ) and / or extends into the door body (7).

9. Door according to one of claims 1 to 8, characterized in that the Lichtumlenkeinrichtung (1 1) at least one reflection element (17, 18) for deflecting the light beams (12) to the handle (8).

10. Door according to one of claims 1 to 9, characterized in that the light deflection device (1 1) has at least one light guide for deflecting the light beams (12) to the handle (8).

1 1. Door according to one of claims 1 to 10, characterized in that the Lichtumlenkeinrichtung (1 1) is adapted to deflect a direction of the light beams (12) by an angle which is present between a door body level and a handle level.

12. Haushaltsgargerät (1) with a cooking chamber (3) and a door (2) according to one of claims 1 to 1 1 for closing the cooking chamber (3).

13. Haushaltsgargerät according to claim 12, further comprising a control device for controlling the illumination device (10), wherein the control device is adapted to change depending on a state or a state change of Haushaltsgargeräts (1) an intensity or wavelength of the light beams (12) ,

14. Household cooking appliance according to claim 12, further comprising a control device for controlling the lighting device, wherein the control device is set up to activate an emitting of the light beams according to a state or a change in state of the household cooking appliance (1). or disable. Household cooking device according to claim 12, further comprising a control device for controlling the illumination device (10), wherein the control device is adapted to execute a fixed lighting program.