DE102005038906A1 - Cooking device e.g. high-level built-in cooking device, for use in kitchen, has lighting assembly with halogen and filament lamps that light cooking space, where assembly and drive motor are connected with one transformer for power supply - Google Patents

Abstract

The device has a muffle with an opening surrounded by frames, where muffle contains a cooking space. A door is provided for closing the opening, and a drive motor (9) is provided for moving the door. A lighting assembly (26) has two halogen lamps (27, 28) and a filament lamp (29) for lighting the cooking space, where lamps switched-on and switched-off simultaneously. The lighting assembly and drive motor are connected with a transformer (30) for power supply. The lighting assembly is operable with a supply voltage ranging between 110 volt and 240 volt. An independent claim is also included for a method of operating a cooking device.

Description

The The present invention relates to a cooking appliance, in particular a Hocheinbaugargerät, with a Cooking chamber delimiting muffle with a muffle opening, a door to close the Muffle opening, a drive device for moving the door, as well as at least one lighting group with at least one lamp for lighting the cooking chamber.

For example US 2,944,540 . DE 100 59 658 A1 or DE 102 28 140 A1 High-installation cooking appliances are known in which the bottom door by means of a drive motor is movable. Furthermore, kitchen appliances are known in which lighting can be switched on generally by pressing a light switch. The lighting is powered by its own lighting transformer with voltage.

adversely is, especially in high-installation cooking appliances, that such a lighting arrangement, and in particular the transformer occupies valuable space and is expensive to install.

It is therefore the object of the present invention, a cooking appliance, in particular a Hocheinbaugargerät, to provide a simplified lighting structure which also inexpensive can be manufactured and installed.

The This object is achieved by the cooking appliance with the features of the claim 1 and a method according to claim 11 solved.

To is the at least one lighting group for the power supply with connected to a transformer, which is also the drive means powered. So it saves a transformer.

Thereby Is it possible, dependent from the operating mode and the device status To provide a customized lighting, in the appropriate Operating mode compared to a full lighting to be reduced can.

These Method is particularly favorable if at least two are independent mutually switchable lighting groups are present, in particular at least one side lighting group and one ceiling lighting group, being conveniently the side lighting group and the drive means with the same transformer are connected. The arrangement and use at least two independent Switchable lighting groups is neither new nor the expert suggested.

The other lighting group, that is not with the transformer the drive unit is connected, is advantageously with a Mains voltage, in particular between 110 V and 240 V, operable, because then also no transformer is needed.

The The lamp operable with the mains voltage is conveniently an incandescent lamp.

Of the Transformer advantageously provides an operating voltage between 12V and 24V out, especially cheap as a 24 V voltage source, which then conveniently that of this Transformer powered lighting group two in series Includes lamps, preferably low-voltage halogen lamps, z. B. 10 W / 12 V halogen lamps. But there are also other arrangements conceivable z. As a 24 V lamp, three series-connected 8 volt lamps, etc.

The Method is particularly favorable if the cooking appliance as a high-installation cooking appliance accomplished is, with the muffle opening then arranged on the bottom side and the door to close the muffle opening a lowerable bottom door is.

at Use of at least two independently switchable Lighting groups, it is advantageous if different switching states of Lighting groups by repeated operation of a light switch, z. B. cyclically, are switchable, as compared to previous Control panels, no new lighting button will be added needs. The control of the lighting groups is conveniently done via a Control circuit, which also the respective lighting condition saved. It can but also several switches for actuating the respective lighting switching states available be. Also, the light switch may be a separate switch or a switch that can trigger other functions (multifunction switch).

there it may be advantageous for optimal illumination of the cooking chamber, if the lighting groups have at least one side lighting group and a ceiling lighting group. In this case can the side lighting group at least two opposite, each side of the muffle mounted low-voltage halogen lamps and the ceiling lighting group comprises at least one ceiling mounted mains voltage lamp.

• (1) alle Beleuchtungsgruppen angeschaltet. Dies ermöglich im geschlossenen Zustand die beste Ausleuchtung für mehrere Ebenen von Gargutträgern und im geöffneten Zustand die beste Ausleuchtung zum Reinigen des Geräts ergibt;
• (2) nur die Deckenbeleuchtungsgruppe angeschaltet, was z. B. im geschlossenen Zustand eine gute Ausleuchtung für einen Gargutträger und im geöffneten Zustand eine gute Arbeitsplatzbeleuchtung, insbesondere für eine Warmhaltefunktion, ergibt, aber gleichzeitig Energie spart;
• (3) alle Beleuchtungsgruppen ausgeschaltet, was eine maximale Energieersparnis bringt, insbesondere, wenn ein Einblick nicht gewünscht wird.

Conveniently, at least the following lighting states are adjustable, not necessarily in this order:

• (1) all lighting groups switched on. This allows in the closed state, the best illumination for several levels of food carriers and in the open state, the best illumination for cleaning the device results;
• (2) only the ceiling lighting group turned on what z. B. in the closed state a good illumination for a food support and in the open state a good workplace lighting, especially for a keep-warm function, but at the same time saves energy;
• (3) turns off all lighting groups, resulting in maximum energy savings, especially when insight is not desired.

• (1) alle Beleuchtungsgruppen angeschaltet;
• (2) nur die Deckenbeleuchtungsgruppe angeschaltet;
• (3) nur die Seitenbeleuchtungsgruppe angeschaltet;
• (4) alle Beleuchtungsgruppen ausgeschaltet.

Of course, other lighting conditions are possible, for. B.

• (1) all lighting groups are turned on;
• (2) only the ceiling lighting group is switched on;
• (3) only the side lighting group turned on;
• (4) all lighting groups switched off.

at at least one of these lighting conditions is therefore only a part the lighting groups activated.

It is particularly, among other things, for an increased ease of use, advantageous when the lighting switching states in at least one transition between opening states of cooking appliance are automatically switchable. Typically, when closed Cooking chamber needs more light as in the open Status. transitions between opening states z. B. in high-installation cooking appliance when automatically switching between roasts in the open state and cooking in a closed state or in the transition between Keep warm in open and closed state.

The executed above Lighting method is also particularly applicable to high installation cooking appliances, in particular which the opening is arranged on the bottom side, and the door to close the muffle opening a lowerable floor door, in particular a linear door, is. As with high-installation cooking appliances a housing Light shields, it is cheap if the lighting groups at least one ceiling lighting group include, which is then turned on when moving the bottom door. That's how it works For example, observe the procedures of the bottom door better.

Of course you can too other or more lighting groups be present, the z. B. may also include other types of lamps or lamp assemblies. Also is it possible that at least one lamp belongs to several lighting groups.

following is an embodiment the invention with reference to the attached Figures in detail described. Show it:

1 a perspective view of a wall-mounted Hoch-Einbaugargeräts with lowered bottom door;

2 a perspective view of the high-Einhaugargeräts with closed bottom door;

3 a perspective view of a housing of the Hoch-Einbaugargeräts without the bottom door;

4 a schematic side view in a sectional view of the mounted on the wall high-mounted cooking appliance with lowered bottom door;

5 shows a perspective view of a housing of the Hoch-Eingarugargeräts along the section II 1 ;

6 shows one too 4 analogue view on high-installation cooking appliance;

7 shows a lighting circuit diagram of the Hocheinbaugargeräts after the 5 , and 6 ,

In the 1 is a high-mounted appliance with a housing 1 shown. The back of the case 1 is like a hanging closet on a wall 2 assembled. In the case 1 is a cooking space 3 defined by the front of the housing 1 inserted window 4 can be controlled. In the 4 it can be seen that the cooking space 3 from a muffle 5 is limited, which is provided with a heat-insulating jacket, not shown, and that the muffle 5 a bottom-side muffle opening 6 having. The muffle opening 6 is with a example in the 1 or 2 shown bottom door 7 closable. In 1 is the bottom door 7 shown lowered, with its bottom in abutment with a countertop 8th a kitchen equipment is. To the cooking space 3 to close, is the bottom door 7 in the in the 2 position shown, the so-called "zero position" to adjust. For adjustment of the bottom door 7 For example, the high-mount appliance has a drive device 9 . 10 on. The drive device 9 . 10 has one in the 1 . 2 and 4 shown with dashed lines drive motor 9 that between the muffle 5 and an outer wall of the Ge häuses 1 is arranged. The drive motor 9 is in the area of the back of the case 1 arranged and stands, as in the 1 or 4 shown in operative connection with one of a pair of lifting elements 10 that with the bottom door 7 are connected. It is according to the schematic side view of the 4 each lifting element 10 designed as an L-shaped carrier, the vertical leg extending from the housing-side drive motor 9 extends. For adjusting the bottom door 7 can the drive motor 9 the drive device by means of a control element 11 a control panel 12 be operated according to the 1 and 2 front on the bottom door 7 is arranged. As in 4 shown on the control panel 12 inside opposite front of the bottom door 7 a control circuit 13 , which with the controls 11 and with ad elements 14 , and which z. B. controls the drive device and a lighting device.

Of the 1 it can be seen that a top of the bottom door 7 a hob 15 having. Almost the entire surface of the hob 15 is from radiators 16 . 17 . 18 taken in the 1 indicated by dash-dotted lines. In 1 are the radiators 16 . 17 two spaced apart, different sizes cooker heaters, while the radiator 18 one between the two cooking surface radiators 16 . 17 provided surface heating element, which is the stove radiator 16 . 17 almost encloses. The radiators 16 . 17 . 18 are each from the control circuit 14 controllable.

In the embodiment shown, the radiators 16 . 17 . 18 designed as a radiant heater, the glass of a ceramic plate 19 are covered. The glass ceramic plate 19 has approximately the dimensions of the top of the bottom door 7 ,

The glass ceramic plate 19 is further equipped with mounting holes (not shown), through the base for holding mounting parts 20 for food carriers 21 protrude, as well as in 4 shown.

Using one in the control panel 12 provided operating knob, the high-installation cooking appliance can be switched to a cooking or a bottom heat mode, which are explained below.

In the hob mode, the cooker heaters can 16 . 17 by means of controls 11 in the control panel 12 are provided, via the control circuit 13 be individually controlled while the surface heating element 18 remains out of service. The hob mode is with the bottom door lowered 7 executable as it is in 1 is shown. But you can also with a closed cooking space 3 with raised floor door 7 be operated in an energy saving function.

In the lower heat mode according to the invention by the control device 14 not just the stove radiators 16 . 17 but also the surface heating element 18 driven. In addition, in the bottom heat mode, one may be on top of the muffle 5 provided upper heat radiator 22 from the controller 14 be controlled.

In order to achieve the most uniform possible tanning of the food during the bottom heat, it is crucial that the cooktop providing the bottom heat 15 one over the surface of the hob 15 even distribution of the heat output has, although the radiator 16 . 17 . 18 have different rated power. Preferably, therefore, the radiator 16 . 17 . 18 from the control circuit 13 not switched to a continuous operation, but the power supply to the radiators 16 . 17 . 18 is clocked. The different sized nominal heating capacities of the radiators 16 . 17 . 18 individually reduced so that the radiator 16 . 17 . 18 one over the surface of the hob 15 provide uniform distribution of the heat output.

4 also shows schematically the location of a fan 23 , z. B. for generating circulating air in a recirculation mode or for supplying fresh air. The housing 1 points to the bottom door 7 a seal 24 on.

The Operating element is not limited in its design and can z. B. z. As control knob, toggle switch, pushbuttons and membrane keys include.

5 shows in perspective according to 3 a housing 1 in section, now along section line II-II 1 , Here are shown for clarity only the essential elements for the lighting concept.

On the side of the muffle 5 is a first (side) lighting group 25 inserted, and in the ceiling of the muffle 5 a second (ceiling) lighting group 26 , The first lighting group 25 includes two on opposite inner sides of the muffle 5 introduced, radiating into the oven, in series 10W / 12V low-voltage halogen lamps 27 , The ceiling lighting group 26 includes a 240V bulb 29 , which is framed by the upper heat radiator (not shown here for clarity).

The sketchy drawn dashed drive motor 9 and the halogen lamps 27 . 28 be through the same transformer 30 fed, resulting in an advantageous component reduction he gives. The mains voltage lightbulb 29 , ie z. B. can be designed for 110 V in countries with appropriate mains voltage, does not require a transformer.

6 shows in an analogous representation 4 a housing 1 in sectional view along the section line II 1 , Here are shown for clarity only the essential elements for the lighting concept.

By activating both lighting groups 25 . 26 can also be several food support 21 when closed, as in 2 shown, well lit, namely the top food support 21 through the ceiling lighting group 26 and underlying food support 21 through the side lighting group 25 ,

For procedures from closed state to 2 in the in 6 illustrated open condition could possibly be the halogen lamps 27 . 28 start to flicker. To avoid this, the procedure is the bottom door 7 the side lighting 25 switched off, especially the ceiling lighting 26 the best way to illuminate the movement. So a user z. B. well recognize if there is a risk of collision. After the target position is reached, the lighting returns to one of the open or closed state lighting conditions.

The supply lines are in the 5 and 6 not shown for clarity.

In 7 is a circuit diagram applied to the lighting concept, in which a mains voltage both the transformer 30 as well as the light bulb 29 the ceiling lighting group is powered. The lightbulb 29 is by one by means of the control circuit 13 switchable switch 31 switched on or off.

The transformer outputs a nominal voltage of 24 V, which via one by means of the control circuit 13 switchable switch 32 either to the series 12V halogen lamps 27 . 28 or to the drive motor 9 can be applied. The control circuit is via the control panel 12 operated, which is a light switch 33 for cyclically switching through the lighting states. The control lines for the switches 31 . 32 are shown in dashed lines.

1

casing

2

wall

3

oven

4

window

5

muffle

6

muffle opening

7

bottom door

8th

countertop

9

drive motor

10

lifting

11

operating element

12

Control panel

13

control circuit

14

indicators

15

hob

16

Hotplate heating elements

17

Hotplate heating elements

18

Panel heater

19

Glass ceramic plate

20

supporting member

21

food support

22

Top heat radiator

23

Fan

24

poetry

25

first lighting group

26

second lighting group

27

halogen lamp

28

halogen lamp

29

Mains voltage bulb

30

transformer

31

switch

32

switch

33

light switch

Claims (11)

Cooking appliance, in particular high-installation cooking appliance, with at least - one cooking chamber ( 3 ) narrowing muffle ( 5 ) with a muffle opening ( 6 ) is surrounded by a muffle frame, - a door ( 7 ) for closing the muffle opening ( 6 ), - a drive device ( 9 . 10 ) for moving the door ( 7 ), - and at least one lighting group ( 25 . 26 ) with at least one lamp ( 27 - 29 ) for lighting the cooking chamber ( 3 ), whereby the lamps ( 27 - 29 ) of the lighting group ( 25 . 26 ) are simultaneously switched on and off, characterized in that the at least one lighting group ( 25 . 26 ) for power supply with a transformer ( 30 ) and the drive device ( 9 . 10 ) for power supply with the same transformer ( 30 ) connected is. Cooking appliance according to claim 1, characterized in that at least two independent vonein other switchable lighting groups ( 25 . 26 ) available. Cooking appliance according to claim 2, characterized in that at least one of the lighting groups ( 26 ) with a mains voltage, in particular between 110 V and 240 V, is operable. Cooking appliance according to claim 3, characterized in that the lighting group operable with the mains voltage ( 26 ) comprises at least one incandescent lamp. Cooking appliance according to one of claims 2 to 4, characterized in that at least one side lighting group ( 25 ) and a ceiling lighting group ( 26 ), the side lighting group ( 25 ) and the drive device ( 9 . 10 ) for power supply with the same transformer ( 30 ) are connected. Cooking appliance according to one of the preceding claims, characterized in that the transformer ( 30 ) outputs an operating voltage between 12 V and 24 V. Cooking appliance according to claim 6, characterized in that the of this transformer ( 30 ) supplied lighting group comprises at least one low-voltage halogen lamp. Cooking appliance according to claim 7, characterized in that the transformer ( 30 ) outputs an operating voltage of 24 V, and that of this transformer ( 30 ) supplied two series 12V halogen lamps. Cooking appliance according to one of the preceding claims, characterized in that at least two existing lighting groups ( 25 . 26 ) are independently switchable. Cooking appliance according to one of the preceding claims, characterized in that the cooking appliance is designed as a high-installation cooking appliance, wherein the muffle opening ( 6 ) is arranged on the bottom side, and the door for closing the muffle opening a lowerable bottom door ( 7 ). Method for operating a cooking appliance according to one of the preceding claims, characterized in that the at least one lighting group ( 25 . 26 ) and the drive device ( 9 . 10 ) with power from the same transformer ( 30 ) are supplied.