GB2186681A - A construction structure for household ovens - Google Patents

Abstract

An oven includes a tubular, rectangular cross-section body (1) open at the front and rear, and a perimetric flange (2) which folds over itself, through which flange (2) an oven frame (13) is fastened. Two rectangular side frames (3) of a U-section profile lie outside the body (1) and extend above and below the body (1). The rear opening of the body (1) is closed by a rear panel (7), the rear panel being held in place by a rear bridge (9) attached at its ends to the rear members of the side frames (3). <IMAGE>

Description

SPECIFICATION Construction structure for household ovens As indicated in the title of this Specification, the invention refers to a construction structure, specially designed for ovens, specifically for household ovens.

Basically, the structure preconized has been designed to ensure that the different elements comprising the oven are secured without weldings.

For this purpose, as the basic elements, this structure has a tubular body, open at its ends, forming the muffle of the oven, provided preferably in its side walls with pressings forming guides for optionally placing trays and racks, said tubular body having its front opening expanded into a perimetric flange, folding over itself and placed in the same plane as the said opening, which is interrupted at its vertexes, while its rear opening is closed through a bottom panel which is adapted in an inner step of the said opening, and which is fixed to it with the aid of a transversal bridge, materialized in an elongated sheet, provided with support pressings in the said panel, and dual elbow ends to couple them to the two rectangular shaped side frames, formed by a closed U-profile, which are placed sideways with respect to the tubular body, and protrude considerably with respect to the latter, both at the top and at the bottom, and which are also secured to the respective side flange of the front opening of the aforementioned tubular body.

The assembly disclosed is completed with a front panel called the oven frame, another characteristic of the invention being the fact that the rear panel which closes the bottom of the oven chamber is obtained from the material eliminated from the so-called oven frame.

Obviously, the bottom panel will be provided with holes for the electric fan shaft to pass, for the light bulb to be fitted, for the respective resistance to pass to the grill, and for all the other accessories which have to be arranged in the rear wall of the oven, while the hinges for the door are placed in the lower front angles of the aforementioned side frames.

It should also be stressed that the pressing in the side walls of the tubular body extend up to its top end area, so that the tray, like a protective cover, can be placed practically backing onto the grill, when the latter is not in use, so that at the same time as protecting the grilling element, the volume it occupies within the oven itself is negligible.

The substantial oversizing in height of the side frames, with respect to the side of the muffle, enables spacious areas to be established above and below the baking chamber, intended for locating thermoinsulant material, which avoids most of the heat losses from the oven, at the same time as a layer of thermoinsulant material being placed between the rear transversal bridge and the bottom panel, thanks to the gap between these elements defined by the pressings of the first, behind which layer of material the fan motor will be located, duly housed in the inner part of the rear cover of the oven.

To complete the description being made, and in order to assist a better understanding of the features of the invention, a set of drawings is attached to this specification, as an integral part thereof, in which the following has been shown, with an illustrative and unlimiting nature Figure 1 shows an exploded perspective view of the construction structure for a household oven, executed according to the object of the invention.

Figure 2 shows a detail of the fastening between the frame and the tubular body of the oven.

Figure 3 shows a side elevation and crosssection of the oven as a whole, duly mounted and with its different accessories, according to a cross-section cut along the line C-D of fig.

4.

Figure 4 shows a front elevation detail and cross-section of the oven executed in this case according to the cutting line A-B of the figure.

In the light of these figures, it can be seen how an oven provided with the structure pre- conized includes a tubular body 1, forming the muffle, open at its front and rear ends, including in its front opening a perimetric flange 2, folding over itself and, as already stated, placed in the same plane as the said opening, a flange through whose side sectors the oven frame 13 is fastened, as shown in fig. 2. In the sides of the muffle 1, there are two rectangular side frames, obtained through a closed U-shape profile and with notches 4 corresponding to its vertexes, in order to assist bending the said profile, these side frames 3 protruding substantially with respect to the body 1, both upwards and downwards. These two side frames 3 form the supporting elements of the whole structure.

The tubular body 1 has a step 6 in its slightly broadened rear opening, on which a bottom panel 7 rests, fitting perfectly into the said opening, said panel being provided with a pressing 8 which mainly affects it and whose convex area faces backwards, this bottom panel 7 being secured with the assistance of a transversal bridge 9 materialized in a transversally elongated strip, also clearly visible in fig. 9, provided with pressings 10 through which it touches the said panel 7, whereas its ends are provided with elbows 11, facing backwards, which thus stagger its free edges 12, provided with a dual elbow gnd intended for securing the said bridge to the rear struts of the frames 3, as illustrated with a dotted line in fig. 1.

The structure disclosed is completed with an oven frame 13, which is joined to the opening 2 of the oven muffle by fastening the projections 14, with the particularity that the surplus material remaining from the hole forming the access opening of the oven frame 14 is used to obtain the bottom panel 7, from the actual material removed from the said oven frame.

On the other hand, it has been foreseen that the classical pressings 15 of the side walls of the oven, to define the guides 16 for placing the rack 17 and the tray 18, extend towards the upper end area of the cavity defined by the actual body of the oven 1, so that when the grill is not working, the protective tray 36 can occupy the extreme top position, in which it hardly affects the volume of the oven.

On the other hand, and as is obvious, the bottom panel 7 will be provided with holes, also clearly visible in fig. 1, for the resistance 20 to pass, corresponding to the grill, for the shaft 21 which connects the fan 22 to the respective drive motor 23, for coupling the oven light 24, etc., at the same time as in the base of the baking enclosure, a double partition 25 will be made which, together with the lower wall of the tubular body 1, will house the oven resistance 26.

As has also been said hereinabove, the vertical oversizing of the side frames 3, with respect to the tubular body 1, defines spacious upper and lower areas for placing the respective layers of thermoinsulant material 27 and 28, establishing another layer of thermoinsu lant material 29 between the bottom panel 7 and the transversal bridge 9, this thermoinsu lant lining 27 and 28 extending to the side walls of the oven, as seen in fig. 4, where it is marked with reference number 30, the whole assembly being duly covered by a series of panels 31-37, like a shell which encases the whole oven, with the exception of its front opening, in which the said oven frame 13 is placed, whose fastening elements 32 act on the actual side frames 3, specifically near their lower front vertex, as shown in turn in fig. 3.

Specifically, the top panel 31 is joined to the rear cover 7 of the muffle and to the upper sector of the perimetric flange of the oven frame 13, while the side panels 37 are fixed to the side sectors of the same flange, said panels also having a step in their lower edge, to be inserted in the U-channel of the side frames 3, and at their upper edge are screwed to the said frames.

The structure disclosed is completed with the respective set of controls 34 which preferably will be placed in an upper front projection 35 of the housing 31, as also shown in fig. 3.

In this way, a modularized structure is achieved for obtaining the oven, made of independent parts, easily obtained by die-cutting or stamping, and which can also be easily assembled without welding, since all these elements fit into each other through perfectly adapted couplings and by fastenings, the necessary bolts and nuts being reduced to small details, independent of the basic oven structure.

Finally, the oven will include the classic door 38 with the hinging means 32 on its lower edge, with double glazing 39-40, a sealing strip 41, and with the likewise classic handle 42, as is conventional.

It is not considered necessary to make this description more extensive for an expert on the subject to understand the scope of the invention and the advantages derived therefrom.

The materials, shape, size and layout of the elements may vary, provided this does not involve altering the basic essence of the invention.

The terms in which this specification has been disclosed should always be taken in their broadest and unlimiting sense.

Claims (5)

1. A CONSTRUCTION STRUCTURE FOR HOUSEHOLD OVENS, essentially characterized by comprising a tubular rectangular cross-section body, open at its front and rear ends, forming the chamber of the oven or muffle, a tubular body provided in its front opening with a perimetric flange, folding over itself, through which flange the so-called oven frame is fastened, there being two rectangular side frames, obtained from a closed U-shaped section profile, said frames being substantially prominant, both at the top and at the bottom, with respect to the tubular body, said tubular body being closed at its rear opening with the assistance of a bottom panel, which is coupled to a shallow inner step formed in the said opening, through a slight widening in it, said bottom panel being held against the rear opening of the tubular body with the aid of a transversal bridge, materialized in an elongated strip, provided with a pair of front pressings, through which it touches the said bottom wall, being substantially spaced in the rest of its surface with respect to the said panel and having its ends slanting backwards and finished in dual elbows, through which the said transversal bridge is fixed to the rear stretches of the side frames, which are also shifted backwards with respect to the tubular body.

2. A construction structure for household ovens, which structure comprises a tubular body, open at the front and rear, forming an oven chamber, the body having flange means at its front opening for attachment of an oven front frame, the structure further comprising a pair of side frames, one frame lying each side of the tubular body, having first and rear members lying planes parallel to the front and rear openings of the body and extending above and below the body, the rear body opening being closed by a bottom panel held against the tubular body by a transversal bridge, said transversal bridge being secured to the rear members of the side frames and pressing the bottom panel against the tubular body.

3. A construction structure for household ovens, according to claim 1 or 2, characterized in that the said side frames, in their front sector and near their lower vertex, include means for coupling swivel hinges on the front door, it also being provided that the opening of the oven frame is dimensionally suitable so that the panel forming the bottom of the oven can be obtained from the part which constitutes the said opening, using the material removed for obtaining it; this panel will obviously include all the necessary drills and holes for the different oven accessories to pass, such as resistances, lights, air fan shaft, and others.

4. -A CONSTRUCTION STRUCTURE FOR HOUSEHOLD OVENS, according to the previous claims, characterized in that the pressings in the side walls of the tubular body, forming guides for the selective coupling of oven trays and racks, extend towards its top end area, allowing these elements to be placed against the grill, when this is not in use, to minimize the volume it occupies within the said chamber, the latter being thermoinsulated through a layer of thermoinsulant material which completely surrounds the tubular body, stretching to the level defined by the side frames, while the bottom of the oven is thermoinsulated by a layer of material placed between the bottom panel and the transversal bridge fixing it.

5. A structure substantially as hereinbefore described with reference to and as shown in the accompanying drawings.