WO2015082574A1

WO2015082574A1 - Electric baking device

Info

Publication number: WO2015082574A1
Application number: PCT/EP2014/076471
Authority: WO
Inventors: Michael Stolle
Original assignee: Team International Marketing S.A.
Priority date: 2013-12-03
Filing date: 2014-12-03
Publication date: 2015-06-11
Also published as: KR20160092009A; DE102013020169A1; EP3076835A1

Abstract

The invention relates to an electric baking device comprising a housing (10) which has a lower part (12) and an upper part (13) and at least one heating element (18, 19) which is arranged in the lower part and/or the upper part. Said lower part (12) and the upper part (13) are interconnected by means of a joint (14) so that they can pivot and define a baking chamber (15) in the closed state, in which at least one removable baking element (16, 16') is arranged. Said baking device is characterised in that the removable baking element (16, 16') is at least partially made of silicon rubber.

Description

Electric baking device

The present invention relates to an electric baking device with a housing having a lower part and a top and at least one in the lower part and / or the

Upper part arranged arranged heating element, wherein the lower part and the upper part are pivotally connected to each other via a hinge and define a baking chamber in the closed state, in which at least one removable baking element is arranged. Such electrical baking appliances are widely used in households. These are typically portable tabletop devices that, depending on the design, as sandwich toaster, muffin maker, waffle iron, etc. be used. Such electric baking appliances are known either with fixed integrated baking elements or with removable and exchangeable baking elements. In the latter case, the same electric baking appliance can then be used for different purposes, for example with a baking element for preparing sandwiches or other baking elements for the preparation of waffles.

The previously known electric baking devices of the type described above usually have baking elements or baking plates, due to the necessary

Heat distribution are made of aluminum. However, such baking plates are relatively expensive to manufacture. In addition, although a certain reduction in the variety of devices can be achieved by exchangeable baking plates, but these replaceable baking plates made of aluminum so far only possible with flat shapes.

From US 2006/027251 1 A1 and US 2013/01 12086 A1 electrical cooking appliances with removable silicone molds are known. These silicone molds are firmly connected in operation with the mutually pivotable lower or upper parts of the cooking appliance, so that a removal of the silicone molds is only possible safely in the off, cooled state.

From the patent DD 251702 A1 discloses a contact grill device is known which has a

Has a joint mechanism with height adjustment, so that the distance between the upper part and lower part of the contact grill unit is variable. From the international patent application WO 2008/043127 A1, a similar grilling device with adjustable distance between the upper part and lower part is known, which also has a furnace ring, which surrounds the heating chamber at a large distance between the upper part and lower part and thus reduces heat losses.

The present invention is based on the technical problem of providing an electric baking device which is less expensive to produce and has a greater variety of exchangeable baking elements. This problem is solved by the electric baking apparatus according to the present claim 1. Advantageous developments of the electric baking device are

Subject of the dependent claims.

The invention accordingly relates to an electric baking device of the type described above, which is characterized in that the removable baking element at least partially consists of a silicone rubber. Such baking elements

Silicone rubber can be produced inexpensively in large quantities and with a very large variety of shapes. The electric baking device according to the invention with exchangeable silicone rubber back elements moreover has the advantage that the silicone rubber itself is a relatively poor conductor of heat and thus there is no risk of burns during handling, in particular when replacing the baking elements after a first preparation process. In the electric baking device according to the invention, however, the removable baking element does not have to be completely silicone rubber.

Preferably, the removable baking element is freely positionable in the baking space defined between upper part and lower part. Free positioning is to be understood in the present context, a baking element whose

Outer dimensions smaller than the inner dimensions of the lower part of the housing, so that the baking element is not fitted snugly in a complementary shape of the base, but can be easily placed on the preferably flat bottom of the base and remains movable to some extent in the lower part.

This makes it possible, on the one hand, that radiation or convection heat from Heating element of the lower part of the housing on the sides of the baking element can pass over into the upper region of the heating chamber, so that the electric baking appliance according to the invention acts less like a conventional contact grill, but much like a small table oven. In addition, an existing between the outer periphery of the baking element and the inner wall of the lower part of the housing clearance allows safe removal of the baking pan during operation or immediately after completion of the baking process, especially if the baking element, as inventively preferably provided, at least on the outer circumference

Silicone rubber exists.

The baking space preferably has internal dimensions of approximately 270 mm × 180 mm. Typical maximum internal dimensions of the bakeware in the oven with a certain play freely positionable baking molds are then for example 255 mm x 165 mm. According to a preferred embodiment, the baking element, which

at least partially made of a silicone rubber, a baking plate or a baking pan.

Preferably, the joint is formed so that the distance between the upper part and the lower part of the housing of the electric baking device is changeable. This allows for the first time to use baking plates or baking pans with significantly different height / depth in one and the same electric baking device. For example, a baking plate / baking mold can be relatively flat for the production of wafers, while another baking mold is substantially deeper and has, for example, forms for receiving a dough for the production of muffins.

The height adjustment can be done for example by means of a joint with slot. In the slot, for example, connected to the upper part pin can be performed with a flattened round profile. The dimensions of the slot can be chosen so that the pin is non-rotatably guided in the central region of the slot. The slot may have two larger extensions at its two ends, in which the pin is then rotatable. By appropriate dimensioning can thus ensure that a shift and thus a height adjustment of the lower part and upper part to each other only in a certain position, for example in unfolded position of the upper part, is made possible. Preferably, the

Height adjustment a change in the distance between the upper and lower part in a range of about 3-5 cm, so that in the above example, starting from an original oven height of 70 mm, a baking chamber height of 120 mm can be achieved.

In the closed state of the housing, the upper part can rest on the lower part. However, it is also possible that upper part and lower part engage in the closed state.

With variable distance between the upper and lower part of the disadvantage exists in particular at a greater distance that heat can escape through the gap between the upper and lower part, which extends the baking process and increased

Energy consumption is connected. To avoid this disadvantage, the upper or lower part, more preferably the lower part of the electric baking device according to the invention, preferably a side wall which is pulled up over the top of the first heating element and defines a space for receiving the removable baking element. Thus, different sized baking elements can be used.

In a variant of the baking device according to the invention with a fixed, raised side wall, the upper part in the closed state of the housing in the

Intervene lower part, so a well-closed oven without unnecessary

Heat loss is formed. However, it is also possible that the side wall of the lower part a vertically movable relative to the base of the lower part

Extension ring is formed. The extension ring is then connected to the hinge or the hinge such that the extension ring at a

Height adjustment is guided upwards. Thus, regardless of the distance between the upper part and lower part always a closed oven with variable volume guaranteed.

Alternatively, in a height-adjustable baking device according to the invention, a separate intermediate ring may also be provided, which can be inserted between the upper part and lower part and thus defines a side wall of the baking chamber. The variant according to the invention with intermediate ring does not require expensive mechanics and is therefore cheaper to produce than a connected to the hinge

Extension ring. The heating elements of the electric baking device according to the invention can

be arranged for example in the lower part, in the upper part or in the lower and upper part. Preferably, at least a first heating element in the bottom of the lower part of the

Housing arranged. The heating element may be, for example, a known resistance heating coil.

The baking element arranged in the lower part of the housing can be arranged at a distance from the first heating element, but it can also rest on the heating element, in particular on the thermally conductive bottom of the lower part. One

Overlying baking element may be particularly advantageous if certain

Areas of the food to be prepared should be heated / browned more. Particularly preferably, the at least one, removable baking element on baking molds, in which at least the bottom element of a well

thermally conductive material, in particular consists of a metal. For this purpose, the baking molds may, for example, have indentations, the bottom of the indentations being formed by a metal plate. The metal plate then provides a much better heat transfer to certain areas of the preparing

Food, because the thermal conductivity of the metal plate higher than the

Thermal conductivity of the surrounding silicone rubber is. According to one variant, the baking molds of the baking element as a whole consist of the heat-conducting material, for example of metal, and have only one

Edge area of silicone rubber on. This edge area made of silicone rubber allows a safe handling of the still warm or hot baking elements. Preferably, the edge region is formed as a silicon ring surrounding the baking molds.

According to a particularly preferred embodiment, the baking element consists of two half-shells, namely a lower half-shell and an upper half-shell, which can be superimposed to form a closed baking element. In In this case, preferably, each half-shell on a silicone ring, wherein the silicone ring of the lower half-shell complementary to the silicone ring of the upper

Half shell is formed so that after juxtaposition of the two half shells an effective edge seal is formed. For example, the upper silicone ring may be formed flat, while the silicone ring of the lower half-shell is L-shaped and at least partially surrounds the flat silicone ring of the upper half-shell.

Preferably, a second heating element is arranged on the underside of the lid of the upper part of the housing, so that a particularly effective heating of the

Backroom is guaranteed from above and from below.

Preferably, the resistance heating element is cast in a heating plate or mechanically locked. The heating plate may be a flat surface and serve essentially as a contact heat source or convection heat source, or the heating plate may be formed perforated, so that the resistance heating elements through the holes can effectively radiate radiant heat to the food to be prepared.

The invention is explained in more detail below with reference to an embodiment shown in the accompanying drawings.

In the drawings shows:

Figure 1 is a schematic sectional view of a preferred embodiment of the electric baking apparatus according to the invention;

Figure 2 shows an exemplary variant of a removable baking element

Silicone rubber;

Figure 3 is a schematic representation of a joint with height adjustment function of the baking apparatus of Figure 1;

Figure 4 is a schematic perspective view of another preferred

Embodiment of the electric baking apparatus according to the invention; FIG. 5 shows the baking element shown in FIG. 4;

FIG. 6 shows the baking apparatus shown in FIG. 4 with another baking element; FIG. 7 shows the baking element shown in FIG. 6; FIG. 8 shows a separate intermediate ring for enlarging the baking chamber of the baking appliance illustrated in FIGS. 4 and 6;

Figure 9 shows the baking apparatus of Figures 4 and 6 with inserted intermediate ring;

FIG. 10 shows the baking apparatus of FIG. 9 with a further variant of FIG

Jaw member;

Figure 1 1, the baking element of Figure 10;

Figure 12 shows a further variant of a baking element in plan view; and

13 shows a sectional view of the baking element of FIG. 12. FIG. 1 shows a preferred embodiment of an electric baking appliance according to the invention, which is denoted overall by the reference numeral 10. The baking device 10 consists of a housing 1 1, which has a lower part 12 and an upper part 13, wherein the lower part 12 and the upper part 13 are pivotally connected to each other via a height-adjustable joint 14. In Figure 1, the baking device is shown closed state. When the top and bottom lie on top of each other, they define a baking chamber 15 in which a removable one

Baking element 16 is arranged. The baking element 16 consists of a

Silicone rubber and has a plurality of recesses 17, which can be filled with dough, for example. As a heating source, the baking apparatus 10 has a heating element 18 in the bottom of the lower part 12 and a heating element 19 on the underside of the lid of the upper part 13.

FIG. 2 shows a variant 16 'of the baking element 16 of FIG. 1 in one

shown in perspective view. While the baking element 16 of FIG. 1 is designed, for example, as a muffin baking mold with deep depressions 17, the baking element 16 'of FIG. 2 has only a shallow depression 17' which

for example, suitable for baking waffles or cookies.

In the recesses 17 of the baking element 16 of the Figurl are in the bottom area

Metal plates 20 are provided, which are in the installed state in direct thermal contact with the heating element 18 and thus allow increased tanning of the lower portion of the located in the recesses 17 dough filling. In order for differently deep baking molds, such as the relatively deep baking element 16 of FIG. 1 and the relatively flat baking mold 16 'of FIG. 2, to be used in a common appliance, the baking appliance 10 of FIG. 1 has a height-adjustable hinge 14, which is also connected is explained in more detail with FIG. The upper part 13 is connected to a rotation axis 21, which is guided in a slot 22. The axis of rotation 21 is formed as a flattened circle, so that the axis of rotation 21 in the central region 23 of the elongated hole 22 can not rotate. At the ends 24, 25 of the slot 22, the cross section of the elongated hole is increased so that the rotation axis 21 can rotate there. This ensures on the one hand that a height adjustment in the closed state is not possible, while with open top 13 an adjustment between the lowest and the highest position of the upper part 13 with respect to the lower part 12 is allowed.

As can also be seen in FIG. 1, the lower part 12 has an extension ring 26, which is connected to the upper part 13 and engages in the lower part 12 on the inside of the lower part. The extension ring 26 is connected to the upper part 13 so that when the distance between the upper part and lower part of the inner ring is increased, thus bridging a resulting between the upper part and lower part gap, which allows a good thermal sealing of the oven.

FIG. 4 shows a variant of the electric baking appliance according to the invention, which is denoted overall by the reference numeral 1 10. The baking device 1 10 in turn consists of a housing 1 1 1, which has a lower part 1 12 and an upper part 1 13, wherein the lower part 1 12 and the upper part 1 13 pivotally connected to each other via a height-adjustable joint 1 14. In Figure 4, the baking device is shown in the open position. In the lower part of a baking element 1 16 is used, which is formed in the present example as a cake pan. The edge region 127 of the baking element 1 16 is made of silicone rubber, while the baking mold 128 itself can also be made of silicone rubber or of a thermally conductive material, for example of a metallic material.

In FIGS. 6 and 7, the baking apparatus 1 10 of FIG. 4 is with another

Baking element 216 shown having a plurality of baking molds 228, respectively are provided with a bottom plate 229 of a thermally conductive material, such as a metal plate.

In Figures 9 to 1 1, the baking device 1 10 of Figures 4 and 6 with a

Provided intermediate ring 130, which can be used to close the baking chamber laterally, when the joint 1 14 in the setting for the maximum

Distance between lower part 1 12 and upper part 1 13 is located. By the intermediate ring 130, a closed baking chamber is formed with a larger internal volume in the closed state of the baking apparatus 1 10, so that for example the baking element 316 shown in Figures 10 and 1 1 can be used, which has a greater height than the baking elements 1 16 or 216 of Figures 4 to 7.

In FIGS. 12 and 13, an alternative baking element 416 is shown, which consists of two half-shells 430 and 431, which are put into one another. The inner region of both half-shells consists of a metallic waffle shape 432 or 433, which is surrounded in each case by a circumferential silicone ring 434 or 435. As can be seen in particular in the sectional view, the silicone ring 434 of the lower half-shell 430 has an L-shaped cross section with an outer leg 436 softer the

Silicone ring 435 of the upper half shell partially engages. For example, when dough is filled in the lower half shell and the upper half shell is inserted into the lower half shell, the circumferential silicone rings 434 and 435 provide for a

reliable sealing of the baking pan so that no dough emerges during the baking process. Furthermore, the interlocking silicone rings allow a trouble-free

Handling the still warm or hot baking pan after completion of the

Baking process.

Claims

claims

1 . Electric baking apparatus having a housing (1 1; 1 1 1) which has a lower part (12; 1 12) and an upper part (13; 13) and at least one heating element (18, 19) arranged in the lower part and / or the upper part wherein the lower part (12; 1 12) and the upper part (13; 1 13) are pivotally connected to each other via a hinge (14; 1 14) and in the closed state define a baking chamber (15) in which at least one removable baking element

(16, 16 ', 16, 216, 316, 416),

characterized in that

the removable baking element (16, 16 ', 16, 216, 316, 416) consists at least partially of a silicone rubber.

2. Electric baking appliance according to claim 1, characterized in that the removable baking element (16, 16 ', 16, 216, 316, 416) is freely positionable in the baking chamber (15).

3. Electric baking appliance according to one of claims 1 or 2, characterized

in that the baking element (16, 16 '; 16; 216; 316; 416) has a

Back plate or a baking dish has.

4. Electric baking appliance according to one of claims 1 to 3, characterized

in that the joint (14; 1 14) is designed so that the distance between the upper part (13; 13) and the lower part (12; 1 12) is variable.

5. Electric baking appliance according to one of claims 1 to 4, characterized

in that the upper part (13; 1 13) and the lower part (12; 1 12) engage in the closed state of the housing.

6. Electric baking appliance according to one of claims 1 to 5, characterized

characterized in that the lower part (12; 1 12) has a side wall which is pulled up over the top of the first heating element (18) and a space for receiving the removable baking element (16, 16 ', 16, 216, 316, 416).

Electric baking apparatus according to claim 6, characterized in that the upper part (13; 1 13) in the closed state of the housing (1 1, 1 1 1) in the lower part (12; 1 12) engages.

Electric baking appliance according to one of claims 4 to 7, characterized

characterized in that the baking device (1 10) has a separate intermediate ring (130) which is insertable between the upper part (1 13) and lower part (1 12) and thus defines a side wall of the baking chamber.

Electric baking appliance according to one of claims 1 to 8, characterized

in that a first heating element (18) is arranged in the bottom of the lower part (12; 1 12) of the housing (1 1; 1 1 1).

Electric baking apparatus according to claim 9, characterized in that the baking element (16,16 ') rests on the bottom of the lower part (12; 1 12).

Electric baking apparatus according to one of claims 1 to 10, characterized in that the baking element (16, 16 ', 16, 216, 316, 416) comprises baking molds, in which at least the bottom element (20, 229) consists of a

thermally conductive material.

Electric baking appliance according to one of claims 1 to 1 1, characterized in that a second heating element (19) on the underside of a lid of the upper part (13; 1 13) of the housing (1 1; 1 1 1) is arranged