EP0857918A1 - Door for a baking oven - Google Patents

Abstract

The oven door has a frame-like support for holding at least one panel element. The frame wall (2) and frame base form a one-piece profiled frame section (1) of the frame-like support which can be made by shaping or milling. The profiled frame part has a panel bearing member (6b) for a first panel element (11) and a holding face (7) for a second panel element (12). The holding face can be arranged on the outside door part of the second panel element. A spacer can be moulded integral on the profiled frame part.

Description

The invention relates to an oven door for an oven with oven muffle, the oven door being a frame-like Carrier for enclosing at least one pane element has and the frame-like carrier one Frame bottom and side edging strips, one form a frame wall defining the door interior. The frame base forms one facing the oven muffle Inner wall of the frame-like carrier.

Oven doors with an external, visible side Outer pane and mostly an additional oven muffle side Inner pane are in several embodiments known. The frame-like carrier for mounting the at least one pane is in known doors composed of several individual parts. These items comprise a frame floor as a load-bearing basic element, the, based on the one mounted on the oven finished door, usually a muffle on the oven side forms the frame-like inner wall of the oven door. Of the The frame base is usually a filling plate Viewing and carrying frame, which can hold a Disc serves. The filler plate is usually essentially just. However, this is not absolutely necessary it can also be structured or profiled. The Filling plate is also called and is a door filler plate preferably enamelled.

On the filler plate are on the side with the help of screws several edging strips designed as angle strips attached, the frame wall surrounding a door interior form with a face side and the Hold at least one pane. As a door interior is the one located within the frame-like carrier To understand space between the inner and the outer pane. The edging strips mostly consist of extruded aluminum profiles.

There are also separate brackets for the panes and fasteners provided to secure the washers in to position and fasten the frame-like carrier. The outer pane is preferably with the inside Fastening elements on the frame-like carrier attached to them to the respective design requirements to be able to adapt. The inner pane is through the side edging strips attached to the filler plate clamped. However, you can also in the frame-like carrier glued.

Furthermore, in known oven doors in the area of Frame wall additional cover strips may be attached to the overall aesthetic impression of many individual parts unify compound door.

EP 0151359 A1 is one of many individual parts manufactured oven door with two panes known. she has a frame, the two side, between the Disc-arranged, vertical struts and an upper one and has a lower cross strut. The lower and upper Cross brace hold the two washers against the side, vertical struts pressed.

Due to the high number of individual parts, the conventional ones Oven doors are structurally complex and require a high assembly effort, which is why they are in the manufacture are expensive.

In addition, oven doors are known which are a frame profile part from formed, for example deep-drawn, Have sheet metal on which the frame wall and the frame base are integrally formed. Such frame profile parts have the disadvantage that they are very easy warp. Furthermore, the profile shape due to the forming manufacturing technology set narrow design limits. You also need to install the oven door additional fastening elements in the frame profile part be welded in. The manufacturing and assembly effort Such oven doors are therefore very large.

The invention is therefore based on the task, to create an oven door that is comparatively few Has individual parts, inexpensive to manufacture and simple is to be assembled. The oven door should be appealing Enable design.

The object is achieved in that at an oven door mentioned above the frame wall and the frame base is a one-piece Rahnmenprofilteil the form frame-like carrier and the frame profile part in is essentially made by master shaping or milling.

The oven door according to the invention has a basic element the frame-like carrier is a one-piece frame profile part on which other elements of the door are attached or can be trained. Through the frame profile part according to the invention the necessary with conventional doors is eliminated separate mounting of the edging strips. About that the cover strips can also be dispensed with will. Thus, by the construction according to the invention Fewer individual parts for assembling an oven door and work steps required. This reduces the assembly effort, so that the door is cheaper is producible. At the same time, the stability increased and the design more pleasing.

Under "master forms" is the manufacture of a molded part an informal raw material (e.g. granules, Melt, powder, etc.) understood. This is the informal The raw material is brought into a special master mold (for example, poured, pressed) in which it goes through Solidification, sintering etc. changes into the solid state. The molded part formed in this way, here the frame profile part, is taken from the master mold

Due to the manufacturing process, the frame profile part has largely the shape required for the oven door and high dimensional accuracy, reducing the number of post-processing steps is reduced. It is also possible technically advantageous and aesthetically desired Realize profile shapes on the frame profile, which at Oven doors not assembled or only from individual parts are possible with a great deal of effort. Furthermore, can the material thickness vary within the frame profile part and be adapted to the respective requirements. For this reason, among other things, the invention Oven door reduces the risk of warping. Likewise, more can be done without high additional effort Elements for the assembly of the oven door and their Installation on the oven in one piece on the frame profile part be designed to further increase the assembly effort to reduce. The advantages mentioned can also apply to a Oven door reached with a milled frame profile part will.

Furthermore, the oven door according to the invention is due to the due to the one-piece frame profile part less Number of grooves and slots easier to clean. Due to the one-piece of the frame profile part and its Realization as a molded part, it is also possible to create corners and Round off edges to create an overall aesthetic impression improve or make it variable as well as safety in use to increase.

The one-piece frame profile part has an upper, lower, left and right frame sections. In the closed Condition of the oven door installed on the oven has one on the frame wall of the frame profile part trained face side to the outside, while the frame floor is an oven muffle-side, i.e. the oven facing inner wall of the frame-like carrier forms.

It can be used to further reduce the number of individual parts be advantageous if other door components, such as a holder for a disc element the one-piece frame profile part are formed.

According to a first advantageous feature, the frame profile part a disc bearing means for a first Disc element on.

According to a second advantageous feature, the frame profile part a holding surface for a second disc element on. The holding surface is preferably on the Frame bottom of the frame profile part formed.

For better thermal insulation, for example at Ovens with catalytic cleaning, the oven door can have a third disc element. Therefore it can be advantageous if the frame profile part at least a spacer extending into the door interior for a third placed on a support surface Has disc element. The contact surface can the at least one spacer can be formed. The at least one spacer can preferably be in one piece be molded onto the frame profile, for example as Spacer or as a protruding part, the following is referred to as a "support dome". Here is the Contact surface preferably arranged such that the third Disc element between the first disc element and the second disc element.

A disc element can, depending on its arrangement within the frame profile part and its execution can be designed differently: it can essentially only from a disc in the frame profile part is attached directly, be formed. In a another variant essentially comprises a disc element a disc and an intermediate beam (hereinafter referred to as "intermediate plate"), which the disc frame-like surrounds. Also several spaced apart marginally connected disks can - if necessary connected with an intermediate plate - a disc element form.

The discs can be in different ways be fastened in the oven door. In a first version can be one or more slices, for example the disc of the second disc element, by means of a Adhesive in the frame profile part or in a corresponding Intermediate plate, which is fastened in the frame profile part will be glued in. The adhesive used should be relatively heat resistant. Silicone-based adhesive and temperature-resistant two-component adhesive can be suitable for this.

In another preferred embodiment, the frame profile part has at least one opening for attaching a Disc element by means of a fastener.

The frame profile part can also be a door locking element have that with a door locking device of Oven interacts. The door locking element can be realized as a closure recess, for example which has a locking projection provided on the oven side, e.g. a door locking bolt or locking bolt engages, to keep the oven door closed.

In addition, with an oven in particular pyrolytic self-cleaning on the frame profile part Door locking element can be formed with a Interlocking device of the oven interacts. The Door locking element can, for example, as a slot-shaped Locking opening to be formed in the locking element provided on the oven side, for example a movable hook that engages around the oven door, especially during pyrolytic self-cleaning lock the oven so that it does not open can be.

Likewise, the frame profile part can be a door handle connection element, for example, have two mounting holes, around the door handle without any design effort on the door attach or integrate. A door handle can too be integrally formed on the frame profile part.

For oven doors for ovens with very high operating temperatures - Especially for devices with pyrolytic Self-cleaning at which temperatures reach up to 500 ° C can be - it is preferred if on the frame profile part on the oven muffle side a heat protection frame is arranged, which surrounds a fourth disc element. The heat protection frame has the task, especially when Pyrolysis to maintain the baking chamber temperature and the disc elements located further out from the heat protect. The heat protection frame is preferably made of enamelled sheet. The fourth disc element can be attached to the heat protection frame in different ways be fixed, for example glued or with the help a fastener held by clamping action will.

Another preferred development of the frame profile part the oven door according to the invention can consist in that the frame profile part has at least one ventilation opening has to in particular when operating the oven the visible first disc element and the Cool the frame wall. In this way, at a Oven door with heat protection frame and a total of four Disk elements are achieved that the outer surface temperature the disc of the first disc element at very high baking chamber temperatures of approx. 500 ° C in substantially does not exceed 78 ° C. The least a ventilation opening can for example be perforated or be slit-shaped. The frame profile part preferably has several vents on that essentially parallel to a section or several sections the frame wall are arranged. Advantageously can use the ventilation openings for indoor ventilation the oven door to a ventilation system on the oven side be connected.

When operating the oven, especially during pyrolysis, despite internal ventilation on the side Areas and the corners of the door interior to a heat build-up come. This can, like heat conduction the profile frame itself, cause the side Heat sections of the frame wall more than desired. For cooling a section of the frame wall, in particular on the side where the door handle is located, preferably has at least the frame profile part one extending into the door interior and essentially extending parallel to the section of the frame wall Cooling fin on. The at least one cooling fin will through air used to ventilate the door interior in this flows in, cooled and thereby brings about an improved Cooling the relevant section of the frame wall. For an improved heat transfer and to reduce the design effort is the cooling fin on the frame profile part preferably formed in one piece.

The oven door according to the invention can both on one Pull-out trolley for a baking sheet as well as on a folding hinge or joint can be attached. In the latter Case is preferred on the frame profile part formed at least one bearing recess, which is a bearing element, for example, a bearing bushing, so that the pocket oven door on the front of the oven can be pivotally attached, the axis of rotation in particular be oriented vertically or horizontally can.

According to a preferred version of the oven door, this is one-piece frame profile part essentially made of metal manufactured, which is preferably enamelled, painted or coated is. As an advantageous material for the frame profile part aluminum has proven to be a minor one Weight and high stability as well is inexpensive and easy to process. The metal frame profile part can preferably essentially be designed as a die casting. By means of the die casting process manufactured frame profile parts are inexpensive and can be made in many different shapes will.

Alternatively, the frame profile part can consist essentially of Be made of plastic. The suitable plastics for this must be stable at relatively high temperatures be. One can be between the frame floor and the Oven muffle arranged door seal, for example made of silicone, cause insulation so that the on the Frame profile part acting temperature lower than that Baking chamber temperature is. Appear as suitable plastics especially PPS or PEEK, up to one Temperature of approx. 260 ° C are stable. That temperature is, however, due to the silicone seal in Area of the frame profile part not reached. A frame profile part can be made of plastic, for example Injection molding process in large numbers, inexpensive and produce in many different shapes.

Preferably include the disc of the second disc element (second pane) without an oven door Heat protection frame forms a door inner pane, the pane the third disc element, if present (third pane), which forms a door intermediate pane, and the pane of the first disc element (first disc) hardened, coated, optionally printed with a decor and shaped flat glass. The fourth slice of one if necessary existing heat protection frame preferably includes Borosilicate glass.

Let the following embodiments of the invention recognize other advantageous features and special features, the based on the schematic representations in the Drawings described and explained in more detail below will.

Fig. 1

eine sichtseitige Aufsicht auf ein einstückiges Rahmenprofilteil gemäß einer ersten bevorzugten Ausführungsform der Erfindung,

Fig. 2

einen Schnitt A-A' zu Fig. 1,

Fig. 3

einen Schnitt B-B' zu Fig. 1,

Fig. 4

einen Detailausschnitt aus dem oben links gelegenen Rahmenabschnitt von Fig. 1,

Fig. 5

einen Schnitt A-A' zu Fig. 4,

Fig. 6

einen Schnitt B-B' zu Fig. 4,

Fig. 7

einen ersten Detailschnitt aus dem linken Rahmenabschnitt des Rahmenprofilteiles von Fig. 1,

Fig. 8

einen zweiten Detailschnitt aus dem rechten Rahmenabschnitt des Rahmenprofilteiles von Fig. 1,

Fig. 9

einen dritten Detailschnitt aus dem rechten Rahmenabschnitt des Rahmenprofilteiles (mit Scheiben) von Fig. 1,

Fig. 10

einen vierten Detailschnitt aus dem oberen Rahmenabschnitt des Rahmenprofilteiles (mit Scheiben) von Fig. 1,

Fig. 11

einen fünften Detailschnitt aus dem unteren Rahmenabschnitt des Rahmenprofilteiles (ohne Scheiben) von Fig. 1,

Fig. 12

eine backofenmuffel-seitige perspektivische Aufsicht auf ein einstückiges Rahmenprofilteil gemäß einer zweiten bevorzugten Ausführungsform der Erfindung,

Fig. 13

eine sichtseitige perspektivische Aufsicht auf das Rahmenprofilteil von Fig. 12 mit eingesetztem ersten Scheibenelement,

Fig. 14

eine sichtseitige perspektivische Aufsicht auf das Rahmenprofilteil von Fig. 12,

Fig. 15

eine Fig. 14 entsprechende Darstellung aus einer anderen Blickrichtung,

Fig. 16

einen Detailausschnitt aus dem Rahmenprofilteil von Fig. 12,

Fig. 17

einen Schnitt A-A' zu Fig. 16,

Fig. 18

einen Schnitt B-B' zu Fig. 16,

Fig. 19

einen Schnitt C-C' zu Fig. 16,

Fig. 20

einen Schnitt D-D' zu Fig. 16,

Fig. 21

einen der Schnittlage B-B' aus Fig. 16 entsprechenden Schnitt durch ein Rahmenprofilteil gemäß einer dritten bevorzugten Ausführungsform der Erfindung,

Fig. 22

einen der Schnittlage C-C' aus Fig. 16 entsprechenden Schnitt durch das Rahmenprofilteil gemäß der dritten bevorzugten Ausführungsform der Erfindung,

Fig. 23

einen der Schnittlage D-D' aus Fig. 16 entsprechenden Schnitt durch das Rahmenprofilteil gemäß der dritten bevorzugten Ausführungsform der Erfindung und

Fig. 24

einen der Schnittlage B-B' aus Fig. 16 entsprechenden Schnitt durch ein Rahmenprofilteil gemäß einer vierten bevorzugten Ausführungsform der Erfindung.

Show it:

Fig. 1

a visible top view of a one-piece frame profile part according to a first preferred embodiment of the invention,

Fig. 2

2 shows a section AA 'to FIG. 1,

Fig. 3

2 shows a section BB 'to FIG. 1,

Fig. 4

2 shows a detail from the frame section of FIG. 1 located at the top left,

Fig. 5

4 shows a section AA 'to FIG. 4,

Fig. 6

4 shows a section BB 'to FIG. 4,

Fig. 7

2 shows a first detail section from the left frame section of the frame profile part from FIG. 1,

Fig. 8

2 shows a second detail section from the right frame section of the frame profile part from FIG. 1,

Fig. 9

3 shows a third detail section from the right frame section of the frame profile part (with panes) from FIG. 1,

Fig. 10

4 shows a fourth detail section from the upper frame section of the frame profile part (with panes) from FIG. 1,

Fig. 11

5 shows a fifth detail section from the lower frame section of the frame profile part (without panes) from FIG. 1,

Fig. 12

2 shows a perspective top view of a one-piece frame profile part according to a second preferred embodiment of the invention,

Fig. 13

12 shows a perspective top view of the frame profile part from FIG. 12 with the first pane element inserted,

Fig. 14

12 shows a perspective perspective view of the frame profile part from FIG. 12,

Fig. 15

14 shows a representation corresponding to FIG. 14 from a different viewing direction,

Fig. 16

12 shows a detail of the frame profile part from FIG. 12,

Fig. 17

a section AA 'to Fig. 16,

Fig. 18

a section BB 'to Fig. 16,

Fig. 19

16 shows a section CC 'of FIG. 16,

Fig. 20

a section DD 'to Fig. 16,

Fig. 21

16 a section corresponding to the sectional position BB 'from FIG. 16 through a frame profile part according to a third preferred embodiment of the invention,

Fig. 22

16 shows a section through the frame profile part according to the third preferred embodiment of the invention, corresponding to the sectional position CC ′ from FIG. 16,

Fig. 23

a section corresponding to the sectional position DD 'from FIG. 16 through the frame profile part according to the third preferred embodiment of the invention and

Fig. 24

a section corresponding to the sectional position BB 'from FIG. 16 through a frame profile part according to a fourth preferred embodiment of the invention.

Figures 1 to 11 show two different variants a first preferred embodiment of the invention Oven door.

In Fig. 1 is a one-piece frame profile part 1 of Oven door with space for up to three Disc elements from its visible side without any Disc elements shown. Since the disc elements at this embodiment each consist of a disc, is used for the sake of simplicity in the description of "Slices" spoken instead of "slice elements". Of course, the disc elements can also be different be realized.

An upper frame section 1a can be seen in the figure, a lower frame section 1b, a left frame section 1c and a right frame section 1d. The lateral frame sections 1c, 1d have openings 14 - in illustrated embodiment a total of four openings - For one fastener each for fastening a disc. Also on the right frame section 1d a formed as a locking recess Door closure element 19 to recognize.

Fig. 2 shows a section through the upper frame section 1a and the lower frame section 1b along the Line A-A '. One can see a bordering a door interior 3 Frame wall 2 and one essentially rectangular on the frame wall 2 integrally molded frame base 4, the one of the oven muffle facing the inner wall of the frame profile part 1 forms. The upper frame section 1a is described in more detail in FIG. 5.

The between the upper and lower frame section 1a, 1b drawn auxiliary lines illustrate among other things the position of the disks not shown. Other lines represent tear-off edges of the profile. The same applies for Figures 3, 5, 6, 7, 8 and 11.

In Fig. 3 is a section through the left frame section 1c and the right frame section 1d along the Line B-B 'can be seen. The left frame section 1c is shown in Fig. 6, the right frame portion 1d in Fig. 8 in more detail described.

The upper left area of the frame profile part 1 is in Fig. 4 shown as a section. You can see under supervision a disk bearing means 6 for the one outer pane forming first disc and a holding surface 7 for the a second disc forming an inner disc. The disc bearing agent 6 is the first contact surface 6a and the holding surface 7 designed as a second contact surface 7a. Of further a third contact surface 9 can be seen on the possibly existing third disc to lie can come, this washer an washer forms.

Fig. 5 shows a section through the upper frame section 1a from Fig. 4 along the line A-A '. To recognize is the frame wall 2 with molded-on frame base 4. An the visible end face 5 of the frame wall 2 is one first contact surface 6a for the outer pane of the oven door educated. The first contact surface 6a is one Recess or recess in the front side 5 of the Frame profile part 1 is formed. It only forms a partial area the end face 5, the support surface 6a, during the Rest of the end face 5 a lateral protrusion Protection of the disc forms.

Furthermore, it is in the area of the profiled frame floor 4 of the frame profile part 1 trained second Support surface 7a for the inner pane of the oven door see. The second contact surface 7a is opposite to that oven muffle-side end of the frame profile part 1 in Set back towards the visible side of the oven door. In the example shown, the second contact surface is 7a inside the door from the inner pane, not shown arranged.

On the frame profile part 1 is also in the door interior 3 extending spacer 8 with a third bearing surface 9 available. In this embodiment is the spacer 8 as a one-piece, in the frame profile part 1 circumferential spacer educated. The spacer 8 can the support serve a possibly existing third disc, which in this case is an intermediate pane of the oven door forms that between the outer pane and the inner pane is arranged.

6 shows a section through the left frame section 1c from FIG. 4 along the line B-B '. In addition the support surfaces 6a, 7a, 9 for the disks are also an opening 14 for a window fastener and a bearing recess 10 for receiving a bearing element to attach the oven door to the oven detect.

In contrast to Fig. 6 corresponds to that shown in Fig. 7 Cut an area on the left frame portion 1c outside the opening for a window fastener.

On the right frame section 1d of the frame profile part 1 in Fig. 8 is a door lock member 19 in the form of a Locking recess or for fastening a locking bolt educated. Furthermore, are on the frame profile part 1 two door handle connection elements 20 for attachment of a door handle.

9 shows a section through the right frame section 1d with washers and fasteners Outer pane 11a is placed on first contact surface 6a, which is essentially a thickness the amount corresponding to the outer pane 11a is set back inward is. On the outer pane 11a is for the Attachment of the disc in the frame profile part 1 Holding element 16 attached, in the illustrated embodiment formed as a bracket 17 with a bore and glued to the disc with an adhesive is. The bracket works with a fastener 15 and the one formed on the frame profile part 1 Opening 14 together. The fastener 15 is as Realized screw with which the outer disc 11a on the Frame profile part 1 is screwed tight. However, it can other fasteners can be used, such as an elongated extension with a hook-shaped End that in an opening provided on the holding member 16 engages (snap lock).

The inner pane 12a is from the outside on the second bearing surface 7a placed in and by means of an adhesive the frame profile part 1 glued.

In this embodiment there is a third disc present, which forms an washer 13a and on the third bearing surface 9 rests. Between the outer pane 11a and the intermediate disc 13a is an elastic Element 18 for clamping the washer 13a arranged. The elastic element 18, as shown, advantageously between the holding element 16 and the washer 13a. By this arrangement the washer 13a is fixed when attaching (e.g. Screwing) the outer pane 11a in the frame profile part 1 clamped. To protect the outer pane 11a and Intermediate disk 13a can also be on the first contact surface 6a and the third bearing surface 9 each be arranged elastic element.

10 shows a section through a frame profile part 1 with inserted outer, inner and intermediate plate 11a, 12a, 13a in the area of the upper frame section 1c. To can be seen that the trained on the frame bottom 4 second contact surface 7a and that on the front side of the Frame wall 2 formed first support surface 6a around essentially the thickness of the inner pane 12a or Outer pane 11a corresponding amount, based on the Door interior 3, set back inside. To this It is achieved that the disks 12a, 11a only a little protrude beyond the frame profile part 1.

11 shows a variant of this embodiment of a Frame profile part 1 for an oven door according to the invention. The second contact surface 7a differs here to the previous variant on the outside of the door from the shown inner pane arranged, i.e. the second Support surface 7a is located on the oven muffle side of the inner pane. An advantage of this design is that the inner pane does not fall out of the door and this can be damaged if the adhesive connection between the inner pane and the second contact surface 7a should solve.

The described arrangement of the door locking element 19, the at least one bearing recess 10 and the door handle connection element 20 depends crucially on the method of fastening and operating the oven door according to the invention off the oven (e.g. can be swung open to the side, can be opened to the front, attached to a pull-out trolley). The first exemplary embodiment was used as an example described an oven door according to the invention, the hinged on the side of the oven and hinged on the left is.

Figures 12 to 20 show a second embodiment an oven door according to the invention.

In Fig. 12 is the side facing the oven muffle of a one-piece frame profile part 1 of the oven door shown without disc elements. The frame profile part 1 has an upper frame portion 1a, a lower frame portion 1b and side frame sections 1c and 1d on. In the side frame sections 1c and 1d are Openings 14 for one fastener each for fastening a disk element and bearing recesses 10 for attaching the oven door to the oven. Further are ventilation openings 21 on the frame profile part 1 in the form of ventilation slots 22 for internal ventilation a door interior 3 formed. These are in this Embodiment in each frame section 1a, 1b, 1c, 1d arranged parallel to the frame wall 2. You are in that Frame profile part 1 all around, i.e. ring-shaped, formed.

Fig. 13 shows the one-piece frame profile part 1 of its visible side with inserted first disc element 11. In the lower frame section 1b are the ventilation slots 22 recognizable.

The frame profile part 1 is without from its visible side used first disc element in Figures 14 and 15, the frame profile part 1 in FIG. 15 is rotated by 180 ° in comparison with that in FIG. In these figures correspond to the first embodiment a frame wall bordering the door interior 3 2 and a frame base integrally formed on the frame wall 2 4 recognizable. The frame profile part 1 has one piece molded disk bearing means 6 for the first Disc element, the first disc of which is an outer disc forms on. The disk bearing means 6 are each realized as a projection with a hole that is below of the respective opening 14 extends into the door interior. Such disk bearing means 6 are in the following as Fastening domes 6b designated.

The frame profile part 1 also has a holding surface 7 for a second disc element, the second disc forms an inner pane of the oven door. Furthermore is too recognize that the frame profile part 1 is in the door interior 3 extending spacing means 8 for a third Has disc element. The spacing means 8 are each as a one-piece projection with a bore realized and each have a bearing surface 9 for the third disc element. Such a trained one Spacer 8 is hereinafter referred to as the support dome 8a designated.

The continuation of the ventilation slots 22 in the door interior 3 is in Fig. 14 for the upper frame portion 1a and the left frame portion 1c, in Fig. 15, for the lower one Frame section 1b and the right frame section 1d recognizable. For interior ventilation of the door interior 3 are the ventilation slots 22 when the oven door is closed connected to an oven ventilation system, for example by adding some ventilation slots 22 on the Pressure side of a fan of the ventilation system arranged are (see Fig. 19). The ventilation system is for example, the ventilation system for external cooling the oven muffle and for cooling the electronic components the oven. Flowing through the door interior 3 Cooling air cools the window elements and the frame wall 2, which reduces the risk that Users, for example when opening the oven door burn the outer pane 11a or the frame wall 2, or the adjacent furniture is damaged.

For improved cooling of the frame wall 2 of the side Frame sections 1c, 1d are on their frame base 4, respectively two cooling fins 23 formed in one piece, which in each case essentially in these frame sections run parallel to the frame wall 2. Through the Ventilation slots 22 entering the door interior 3 Air flows past the cooling fins 23, causing the heat dissipation the frame wall 2 in the area of the side frame sections 1c and 1d is improved. The cooling fins 23 can also be designed or arranged differently. Further it may be sufficient just on the frame section, where the door handle is located, at least one cooling fin 23 to be provided. In ovens where none are very high operating temperatures occur or at which others Precautions for heat protection are taken (e.g. Provision of a further pane element, insulation measures), can also do without a cooling fin entirely will.

Around the door interior 3 and thus the window elements and it is not sufficient to cool the frame wall 2 sufficiently mandatory that the ventilation slots 22 on the Frame profile part 1 are arranged all around. It can be sufficient on one or more frame sections only provide ventilation slots 22 in sections, for example, in order to direct air along the cooling fins 23. Furthermore, the opening cross section of the Vents 22 depending on the arrangement and function of the respective ventilation slots 22 (air inlet, air outlet) different within the frame profile part 1 be great. Overall, the air flow depends on the Door interior 3 from numerous influencing factors, in particular on the type of ventilation system to which the door interior 3 is connected, the number, the dimensions and the arrangement of the ventilation slots 22, the volume of the door interior 3, etc. These influencing factors are known to the expert. He can do it in a common way and Vary the way to get the required air flow (by means of Convection or forced ventilation) through the door interior 3 to realize.

16 shows a section from the right area of the frame profile part 1. The right frame section 1d is with adjacent upper frame section 1a as well adjacent lower frame section 1b shown. To can be seen that the dimensions of the ventilation slots 22nd are different within the frame profile part 1. In this embodiment, the ventilation slots in particular 22 on the upper frame portion 1a large cross section, since this frame section when closed Oven door on the pressure side of the fan the oven ventilation system is arranged (see Fig. 19). Through the narrower ventilation slots 22 on the right frame section 1d can by in the door interior 3 flowing cooling air secondary air can be sucked in. The air occurs essentially through the vents 22 of the lower frame section 1b from the door interior 3. Of course, the flow path of the cooling air depends on Door interior 3 depends on which side of the oven the pressure side of the ventilation system fan is located, to which the door interior 3 is connected. Consequently, other ventilation slots 22 in the essential to the air inlet or outlet to serve.

In the right frame section 1d there is a closure opening trained door locking element 19 and a slot-shaped locking opening 24 into which a oven hook on the movable hook provided Lock the door can intervene.

17 shows a partial section through the right frame section 1d from Fig. 16. The frame wall 2 is in one piece molded onto the frame base 4. Can also be seen a ventilation slot 22, the locking opening 24 and two cooling fins 23.

18 shows a section through the right frame section 1d from FIG. 16 with disk elements and disk element fastening means. To illustrate the A section of the components is an oven muffle 25 indicated. It can be seen that the frame wall 2 with adjacent frame base 4, the cooling fins 23, the Holding surface 7, the support dome 8a and the mounting dome 6b are integrally formed on the frame profile part 1.

The holding surface 7 is on the outside of the door from the second Disc element 12, which in this embodiment the second disc 12a is arranged. This arrangement the holding surface 7 has the advantage that the assembly the disc elements with the exception of the disc element, that includes the front window of the oven door, from one Direction can take place. This reduces the number the one required to assemble the oven door Handling steps and the risk that the enamelling, Coating or painting the frame profile part 1 at assembly is damaged.

A door seal 26, for example made of silicone to seal the oven door against the oven muffle 25 is between the second disc 12a and the holding surface 7 held by clamping action. Alternatively, you can the door seal 26 also at another location on the oven door or be attached to the oven muffle 25, and the disc 12a can rest on the holding surface 7.

The third disc element 13, the third disc 13a forms an intermediate plate of the oven door, includes next the third disc 13a a molded first intermediate plate 13b, which surrounds the intermediate plate 13a like a frame. The third washer 13a is in a recess of the first intermediate plate 13b glued. Alternatively could also use fasteners be pinched.

The first intermediate plate 13b lies on the contact surfaces 9 of the support dome 8a and is with the help of a fastener attached to them. As a fastener screws are used for the third disk element 13 27, preferably self-tapping screws, the Shaft through a hole in the first intermediate plate 13b extends and into the support domes 8a are screwed in.

The screws 27 are preferably also used for Attachment of the second disc element 12. To this Purpose are holding brackets 28 provided with a bore provided through openings in the first intermediate plate Reach through 13b. To attach the second and third disc elements 12 and 13 are the brackets 28 and the first intermediate plate 13b by means of the screws 27 screwed onto the support domes 8a, each the shaft of a screw 27 through a hole in the Bracket 28 and through a hole in the first intermediate plate 13b engages. One end of the Bracket 28 against the edge of the second disc 12a the door seal 26 and this against the holding surface 7. When attaching the third disc member 13 thus the second disc element 12 in the frame profile part 1 clamped, resulting in a significant reduction of the assembly effort. Of course you can second and third disk element 12, 13 also different in attached to the frame profile part 1, for example glued or individually using other fasteners or be pinched together.

The first disc member 11, which in this embodiment is formed by a first disc 11a, with With the help of holding elements 16, the holding bracket 17 with formed a bore and on the first disc 11a are glued, attached. As in the first embodiment described, each has a bracket 26 with a fastener and one on the frame profile part 1 trained opening 14, which Fasteners advantageously also here Screw is realized. One screw is from the side of the frame profile part facing the oven muffle 1 inserted into an opening 14. It extends it through the bore of the mounting dome 6b and is screwed into the bracket 17. Im used and screwed state is the first Disk 11a preferably does not open in its edge region the frame wall 2, but is on the bracket 17th supported on the mounting domes 6b.

19 shows a section through the upper frame section 1a with inserted disc elements 11, 12, 13 and disk element fasteners the oven door on the oven arranged such that the ventilation slots 22 on the indicated by an arrow 29 Pressure side of a fan of a ventilation system are arranged. Cooling air passes through the ventilation slot 22, whose flow path is illustrated by an arrow 30 is in the door interior 3. With this cut is the hole in the support dome 8a, in which the Screw 27 is screwed in, can be seen.

20 shows a section through the lower frame section 1b of the frame profile part 1, with no ventilation slot 22 is cut. When comparing the figures 18 to 20 it should be noted that the profiling of the Frame profile part 1 depending on the respective Requirements can vary, which is what a especially designed as die-cast aluminum Frame profile part 1 is inexpensive to implement. The minimum frame thickness for a frame profile part made of die-cast aluminum is preferably at least 0.5 mm, preferably at least 1.0 mm. Typical wall thicknesses for cast aluminum are 1.5 mm to 3 mm; larger wall thicknesses up to 10 mm and more are possible.

In the first and second embodiments described so far of the present invention Oven doors, essentially for ovens without pyrolytic self-cleaning are suitable. Such Doors are for ovens with pyrolytic self-cleaning less preferred because temperatures up to during pyrolysis occur at 500 ° C, at which the frame profile part and the disc elements of the previously described embodiments can heat up too much.

A third preferred embodiment is shown in FIGS described the oven door according to the invention, for an oven with pyrolytic self-cleaning suitable is. The cut positions correspond to Figures the cut positions shown in Fig. 16 for the second embodiment. 21 thus shows one Section through the right frame section 1d, FIG. 22 a section through the upper frame portion 1a ( however no ventilation slot 22 is cut) and Fig. 23 shows a section through the lower frame section 1b.

In contrast to the construction of the oven door according to the second embodiment is on the frame profile part 1 Oven-side a heat protection frame 31 with a fourth disk element 32 in the form of a fourth disk 32a arranged. The fourth disc 32a is on the heat protection frame 31, which is made of enamelled sheet metal, preferably clamped by means of holding elements. she however, could also be glued or otherwise attached be. Between the fourth disc 32a and the heat protection frame 31 there is a glass fiber seal 33.

In this embodiment, the second disc element comprises 12 a second disc 12a and a frame-like one second intermediate plate 12b with a circumferential recess, into which the second disc 12a is inserted and there is stuck. The heat protection frame 31 is in the Frame profile part 1 held by clamping action by its edge 36 between the door seal 26 and the edge of the second intermediate plate 12b is arranged. The ends of the Bracket 28 thus hold the second intermediate plate 12b, the edge 36 of the heat protection frame 31 and the door seal 26 pressed against the holding surface 7. Otherwise corresponds the structure of the oven door that of Figures 12 to 20. Of course, other options are possible, around the heat protection frame 31 and the second pane element 12 to be fixed in the frame profile part 1.

An advantageous variant can, for example, be in it exist that the second disc 12a and the third Disc 13a, or the second disc element 12 and that third disc element 13 represent a composite structure and be attached together. 24 is an embodiment explained.

24 shows a section through the left frame section 1d on a section corresponding to section B-B 'from FIG. 16 Place of a fourth embodiment of the invention, namely an oven door with a heat protection frame. This embodiment differs from the third Embodiment essentially through the structure and Assembly of the between the further disc element 32 of the Heat protection frame 31 and the first pane element 11 arranged washers. Form the washers here another disc element 35 in the form of a Disc packs with two arranged parallel to each other Disks 35a, 35b. They are around the edge with help an adhesive 34 made of a temperature-resistant adhesive (e.g. silicone adhesive) bonded together, with the help of a spacer, not shown kept apart from each other. The Discs 35a, 35b of the further disc element 35 correspond thus the second disc 12a and the third Disk 13a in that shown in Figures 21 to 23 Embodiment. The disc package is on a frame-like another intermediate plate 35c of the further disk element 35 glued on. Of course it could too be clamped with the help of fasteners. The another intermediate plate 35c is the same as the first Intermediate plate 13b screwed to the support dome 8a, the bracket 28 in this embodiment Edge 36 of the heat protection frame 31 and the door seal 26 presses against the holding surface 7. Otherwise corresponds to Structure of the oven door that of FIGS. 21 to 23 described oven door.

By using the further disk element described 35, in which the representation in FIG. 24 is broken was around both side edges of the disks 35a, 35b to illustrate the structure of the further disk element To be able to represent 35, the assembly effort the oven door is reduced because during assembly fewer individual parts need to be assembled. For the invention suitable disk packages are for example from DE 4333033 C1 from Schott Glaswerke. As alternative for attaching the disc package to another The intermediate plate 35c could also be fastened in this way done that the window package, the heat protection frame 21 and the door seal 26 between the holding surface 7 and suitable fasteners by clamping action being held.

A disc element with a disc package could also be used an embodiment without a heat protection frame advantageous can be used to reduce the assembly effort.

The number of disks 11a, 12a, 13a, 32a, 35a, 35b of the Disc elements 11, 12, 13, 32, 35 and their arrangement have within the frame profile part 1 among others Influence on the temperature at the first disc 11a first disc element 11, which forms an outer disc, and the temperature on the frame wall 2. This temperature should preferably be less than 80 ° C. At an oven door without heat protection frame with three pane elements 11, 12, 13, for a device without pyrolytic The intervals are self-cleaning between the first disc 11a of the first disc element 11 and the third disc 13a of the third disc element 13 advantageously 0.3 cm to 2.5 cm and between the third disc 13a of the third disc element 13 and the second disc 12a of the second disc element 12 advantageously 0.2 cm to 2.0 cm. At an oven door with heat protection frame 31 for a pyrolysis device is the distance between the fourth Washer 32a of the heat protection frame 31 and the second Disc 12a of the second disc element 12 advantageously 0.3 cm to 2.5 cm. The distances between the Discs of the other disc elements correspond to essentially the one above for an oven door without a heat protection frame distances mentioned. With an oven door with heat protection frame 31 and further pane element 35 with disc package, the distances mentioned in essentially accordingly.

The arrangement of the disc elements 11, 12, 13, 32, 35 and the design of the means for their attachment, in particular the disc bearing means 6, the holding surface 7 and of the spacer 8, and their respective adaptation the respective disk element 11, 12, 13, 35 follow all described embodiments as well as the profiling the frame profile part 1 in addition to structurally necessary Design features also aesthetic aspects. Therefore, the frame profile part 1, in particular the frame base 4, also profiled differently than shown be.

Reference list

1

Frame profile part

1a

upper frame section

1b

lower frame section

1c

left frame section

1d

right frame section

2nd

Frame wall

3rd

Door interior

4th

Frame floor

5

Face to 1

6

Disc storage agent

6a

first contact surface

6b

Fortification dome

7

Holding surface

7a

second contact surface

8th

Spacer

8a

Edition dome

9

(third) contact surface

10th

Bearing recess

11

first disc element

11a

first pane (outer pane)

12th

second disc element

12a

second disc (inner disc or intermediate disc)

12b

second intermediate plate

13

third disc element

13a

third disc (intermediate disc)

13b

first intermediate plate

14

opening

15

Fasteners

16

Holding element

17th

Bracket

18th

elastic element

19th

Door locking element

20th

Door handle connection element

21

Ventilation opening

22

Ventilation slot

23

Cooling fin

24th

Locking opening

25th

Oven muffle

26

Door seal

27

screw

28

Bracket

29

Pressure side of a ventilation system

30th

Cooling air flow path

31

Heat protection frame

32

fourth disc element

32a

fourth disc

33

Glass fiber seal

34

Bonding

35

further disc element

35a

Disc of 35

35b

Disc of 35

35c

another intermediate plate

36

Edge of 31

Claims (18)

Oven door for an oven with an oven muffle (25), the oven door having a frame-like support for enclosing at least one pane element and the frame-like support comprising a frame base (4) and side edging strips which form a frame wall (2) surrounding a door interior (3) , wherein the frame base (4) forms an inner wall of the frame-like carrier facing the oven muffle (25),
characterized in that
the frame wall (2) and the frame base (4) form a one-piece frame profile part (1) of the frame-like carrier and the frame profile part (1) is manufactured essentially by master shaping or milling. Oven door according to claim 1, characterized in that the frame profile part (1) has a pane bearing means (6, 6a, 6b) for a first pane element (11). Oven door according to claim 1 or 2, characterized in that the frame profile part (1) has a holding surface (7, 7a) for a second pane element (12). Oven door according to claim 3, characterized in that the holding surface (7, 7a) is formed on the frame base (4) of the frame profile part (1). Oven door according to claim 4, characterized in that the holding surface (7, 7a) is arranged on the outside of the door of the second pane element (12). Oven door according to one of the preceding claims, characterized in that the frame profile part (1) has at least one spacing means (8, 8a) extending into the door interior (3) for a third pane element (13) placed on a support surface (9). Oven door according to claim 6, characterized in that the at least one spacing means (8, 8a) is integrally formed on the frame profile part (1). Oven door according to claim 6 or 7, characterized in that the third pane element (13) is arranged between the first pane element (11) and the second pane element (12). Oven door according to one of the preceding claims, characterized in that the frame profile part (1) has at least one opening (14) for a fastening element (15) for fastening a pane element (11, 12, 13). Oven door according to Claim 9, characterized in that a holding element (16), preferably a holding bracket (17), is fastened to a pane element (11, 12, 13), in particular to the first pane element (11), which is fastened with the fastening means ( 15) and the at least one opening (14) for fastening a disk element (11, 12, 13) cooperates. Oven door according to one of the preceding claims, characterized in that the frame profile part (1) is essentially made of metal, in particular aluminum, preferably essentially as a die-cast. Oven door according to one of the preceding claims, characterized in that it has a heat protection frame (31) which is arranged on the oven section side on the frame profile part (1), surrounds a fourth pane element (32) and is preferably essentially formed from enamelled sheet metal. Oven door according to one of the preceding claims, characterized in that the frame profile part (1) has at least one bearing recess (10) for receiving a bearing element for fastening the oven door to the oven. Oven door according to one of the preceding claims, characterized in that the frame profile part (1) has at least one ventilation opening (21) for the internal ventilation of the door interior (3). Oven door according to Claim 14, characterized in that the frame profile part (1) has a plurality of ventilation openings (21) which are arranged essentially parallel to a section of the frame wall (2) or to a plurality of sections of the frame wall (2). Oven door according to one of the preceding claims, characterized in that the frame profile part (1) has at least one cooling fin (23) which extends into the door interior (3) and extends essentially parallel to a section of the frame wall (2). Oven door according to claim 16, characterized in that the cooling rib (23) is integrally formed on the frame profile part (1). Oven with an oven door, characterized in that the oven door is designed according to one of claims 1 to 17.

Images