DE2918277A1 - ELECTRIC PIZZA OVEN - Google Patents

Description

DR.-ING. H. H. WILHELM-DIPL.-ING. H. DAUSTER D-7000 STUTTGART 1 - GYMNASIUMSTRASSE 31B - TELEPHONE (07 11) 291133

Applicant :

SUPERi ¹ OEMI HIKALDI SpA

Via Bordigona / Zona Industriale

I-Massa (Massa Carrara)

Electric pizza oven

This invention relates to an electric oven for baking of pizzas previously placed in appropriate baking tins. This type of furnace has one provided with a heat source Oven and a driven continuous conveyor which successively conveys a number of pizzas placed in molds into the baking chamber. The sponsor is Accessible from the outside of the furnace and connected to a loading zone for those to be prepared and an unloading zone for the ready-baked pizzas.

To make aromatic pizzas from the Maintaining the quality of traditional pizzas must be possible, except for one that is appropriate and careful Choice of the interdependent temperature and humidity of the oven, the aforementioned values in relation to

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To regulate the size and weight of the individual pizza and the nature of the ingredients used for the preparation.

The stoves used to this day for this purpose are owned by the essentially the shape of a rectilinear tunnel, which, albeit applied on a wide scale, is recognizable technical and shows economic deficiency. The first obvious shortcoming lies in the considerable extent of the shortage, the also for the production of small and medium quantities of pizzas is necessary, as well as in the lack of availability of the space required to effortlessly move the opposite To be able to reach ends of the oven for loading and unloading the pizzas. Another one that cannot be overlooked The shortcoming of this type of furnace is that it is relatively it is difficult to optimally control the temperature and humidity conditions, unless additional ones and expensive control and regulation devices are used. Another shortcoming are the necessary ones large dimensions of the baking chamber, for its desired and preprogrammed temperature to be maintained considerable energy consumption arises.

It is the object of the invention to provide an electric furnace for the continuous preparation of pizzas in molds for To provide the above mentioned shortcomings so far of known systems and methods.

This object and others, which will emerge in more detail from the following description, are achieved in an oven design according to the preamble of claim Λ in that the baking chamber is accessible from the outside through a single opening and the conveyor moves at least one of rotating wheels with preferably vertical axes Conveyor with brackets, which is mounted in the oven and forms two contiguous zones therein, both of which are from the opening

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are accessible from, and that are along the two adjoining Zones below the bracket of the conveyor is a slide, the end sections of which are outside the baking chamber in lying close to the opening.

As a further feature of the invention, the bracket of the conveyor a profile with an indentation arranged in the direction of displacement of the conveyor with which a baking pan of is detected outside, and devices that interact with the slide in the oven and the pizza forms from the Loosen ironing.

Further features and advantages of this invention will become apparent from the description of an embodiment of an oven with baking pans more clearly, which is shown in the drawings. Show it

1 shows the perspective partial representation of a baking chamber of the electric oven according to the invention,

¹ I " -τ on an enlarged scale and in a partial section structural details of the baking chamber of FIG. 1,

4 schematically shows the rear view of the new furnace,

Fig. 5 shows, on an enlarged scale, a detail of the new one Furnace and

nd * 7 a variant of the structural details of the furnace shown in FIGS. 1 and $.

The drawings show an oven designed according to the invention, e.g. a conventional cabinet oven type not shown,

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equipped with a baking unit 1, which is essentially Has a parallelepiped shape and a box-shaped Base 2, a counter base (or sky) J, also box-shaped, as well as with. Sealing longitudinal walls 4 and 5 and one Back wall 6 is provided. All parts are connected to each other reinforced with conventional means, not shown. This design includes a baking chamber 7, which from outside, i.e. outside the device and the furnace a single frontal opening 8 of predetermined size accessible is.

With 9 a conveyor with horizontal brackets is shown globally, the one in the middle of the baking chamber 7 in the longitudinal direction runs. This hoop conveyor 9 forms two ' adjoining zones 7jL, 7b_, both only through the frontal opening 8 are accessible from the outside.

In detail, this conveyor consists of one of two chain sprockets 11, 12 guided with vertical axes and driven chain 10. The gear 11, i.e. the drive wheel, connected to a vertical shaft 11a. connected is and is made to rotate by an electric motor, not shown, is located in the unit 1 in the Near the opening 8 and close to the inner wall 2a. the box-shaped base 2. This drive wheel 11 and the corresponding shaft 11a. are favorable from outside the Unit 1 accessible and they can for example be stored outside the unit, the upper end of the Shaft 11_a has a polygonal recess 11b which is suitable for receiving a crank 111 (FIG. 2). With this Crank 111 it is possible to operate the conveyor 9 manually and so the pizzas. In the event of an engine failure or when to be taken from the baking chamber 7 in the event of an unforeseen power failure. The other gear 12 is a deflection wheel and loosely

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a bolt 12ja mounted near the rear wall 6 of the baking chamber 7, at a predetermined distance therefrom. The chain 10 is maintained under tension by conventional means (not shown) to reduce thermal fluctuations To elastically compensate for any expansion in the baking chamber or for the clearance caused, for example, by wear.

With 13 a box-shaped housing is referred to as a container and protection for the chain, which has an upper wall 13ji C ^ 'is · 2, 3) with a continuous longitudinal slot 14. The chain 10 is arranged in the housing 13 so that its upper links 10a _- outside and parallel to the upper wall 13a. of the housing 13 run at a short distance from it.

At 15 each of the multitude of on the chain 10 is in regular Distances attached upside down L-shaped bracket called. Each bracket 15 has an upper web 15jL, the is attached in a conventional manner to a corresponding link 10 of the chain 10, while the other web 15b. extends outside and parallel to the vertical wall of the housing 13.

At the free lower end of this vertical web 15b. is a Bracket 16 molded with a semicircular shape, its concave side in the direction of displacement of the chain 10.

When using round cake tins 17, each bracket 16 has a semicircular profile with a predetermined diameter, which is adapted to the outer diameter of the shape I7.

With 19 ₅ 20 two rail-like flat profiles are designated, which are carried by the base 2 and form an elevation on the inner wall 2_a of this base. The parallel and in front

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Flat profiles 19, 20 spaced apart from one another at a certain distance form an elevation in zones 7jä and 7b. of the baking chamber 7, are parallel to the strands of the chain .10 and below
the bracket 16 and have a semicircular section 19a., 20a _- near the rear wall 6 of the baking chamber · 7. The profiles 19, 20 form a slide and support for the baking molds 17 during their passage through the interior of the baking chamber 7 ·

At the ends of this path, the prefiles 19, 20 have corresponding sections 19b_, 20b and 19c., 20c _- outside the baking chamber 7 in the vicinity of the opening 8. Sections 19b, 20b
are curved and the center of the curve coincides with the
Axis of rotation of the drive wheel »11 together. These sections form a support and support plane for molds 17 in which
Pizzas to be prepared 18 arranged simd.

Sections 19c., 20c. are angled outwards and downwards at a certain angle and form a slideway to the
Ejection of the molds 17 with the ready-baked pizzas 18
from the oven.

This incline is chosen so that a tone driven by a corresponding bracket 16 arrives at the sliding track 19c. gen, takes the outer curved path in the direction of Backrauj * 7. At the end of this
Deflection path, the free bracket 16 grabs a new form 17 lying on the loading level 19b_, 20b_ and pushes it into the baking chamber 7-

The heat source of the baking chamber 7 consists of two identical ones
Multiple radiator elements 21, which are attached independently of one another in the longitudinal direction on the box-shaped base and the counter base 3 and are held by several bolts, not shown, with brackets. Each of these straighteners

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elemente 21 (Pig. 5) "consists of a heating element 26, which is inserted into a number of ceramic cores 27 is, which in turn is embedded in a stainless steel tube 28, blocked and completely sealed in the baking chamber 7 are. Each of these radiation tube elements can be removed and inserted from the rear of the furnace (i'ig. 4-) so that their possible replacement does not require any assembly work, as was previously inevitable. ·

hit 23 is a horizontal belt conveyor which is attached to the free lower end of the discharge slide (19c., 2Qc_) and serves to receive the finished baked pizzas 18 coming out of a collection point (not shown) of the oven.

In the i'ig. 6 and 7 shown variant is the Bracket conveyor equipped with a number of straight brackets 24, while on the inner wall 2ji the box-shaped Base 2 an L-profile 25 laterally and parallel to the slide and support (19, 20) for the molds 17 with conventional, means not shown is attached. The vertical web 25a. this L-profile forms an attachment that forms the 17 holds on to the slide during its passage in the baking chamber 7.

Those achievable by means of the electric furnace of the invention The advantages are summarized below:

1. The baking chamber 7 is closed from only one side of the oven through a single frontal opening 8.

little space required for the installation of the furnace, and for the related work steps of input and. Unloading the pizza molds;

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Control and regulation possibility of the optimal Sizes for correct preparation of the product (temperature, conveyor speed);

Possibility of employing only one operator; . ".--. ·" ".

easy automation to carry out the loading and Unloading and consequently a reduction in operating costs;

Possibility of manual shifting of the hoop conveyor in case of unforeseen power failure or damage to the drive motor or the conveyor to remove the pizzas inserted into the baking chamber.

2. Single and independent tip; insert from each other and removable radiator tube elements from the rear of the stove »

- Shortened downtimes if they occur Damage, as repair and replacement of the radiator elements can be carried out quickly and easily;

- Complete electrical insulation of the radiator elements from metal walls and baking room, even in difficult conditions (high heating);

. - Complete protection of the radiator elements from external in- ■ .flows, moisture, steam in the oven and at eventue'llen, thermal fluctuations caused by sudden cooling, ':

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Bends! Conveyor 9 .

The hoop conveyor and its components, namely the chain 10 and a corresponding number of holding brackets 15, the brackets 16, 24 and the wheels 11, 12 with the corresponding support parts can by conventional means form a structural unit, i.e. they can be taken out of the baking chamber through the front opening 8 and into it can be used without dismantling the furnace;

very short maintenance times on the conveyor;

- Periodic control options (programmed maintenance when the stove is not in use).

Unit dimensions (Fig. 4) .

The structural features and dimensions of the furnace described and shown in the drawings are such that that (Fig. 4) two or more ovens of the type described above stacked or others Models with other features can be set up;

higher production possibilities through further rationalization of the available space;

Optimization of the capacity in the operations of loading and unloading the pizza pans.

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Claims (5)

PATENT AGENCIES 2 9 'ft? 7th DR.-! NG. H. H. Wl LH FL M - DIPL.- iNG..H. DAUSTER D-7000 STUTTGART 1 - GYMNASIUMSTRASSE 31B - TELEPHONE (07 11) 29 11 Applicant : Stuttgart, May 4, 1979 • ■ D 5693 / 7a BUPEEiORbil HIM.LDI B.p.A. Dr W / R Via Bordigona / Zona Industriale I-Massa (Massa Carrara) Expectations Electric oven for preparation of previously in appropriate Forms of pickled pizzas, consisting of one equipped with a heat source. Oven, a continuous, driven conveyor that runs successively demands a number of pizzas placed in tins without interruption through this baking space and accessible from the outside of the furnace is, with a loading zone for the to be prepared and an unloading zone for the finished baked, in Forms arranged pizzas is provided, characterized in that the baking chamber (7) by a single Opening (8) accessible from the outside and the conveyor (9) at least one conveyor with brackets, which is moved by rotating baths with preferably vertical axes (16, 24-), which is attached in the baking chamber (7) and therein two adjacent zones (7 &> 7 * 0 forms, both of which are accessible from the opening (8) and that along the two adjacent zones 909846/078 1 -2- (7a, 7ΐ>) below the bracket of the conveyor is a slide (19, 20) is located, the end sections (19b, 20b, 19c, 20c) outside of the baking chamber (7) in the vicinity of the Opening (8). 2. Electric oven according to claim 1, characterized by devices (25, 13) in the baking chamber (7) which _{ensure the retention of the molds (1?) In the interior of the baking chamber on the slide (19 5} 20) during their passage. 3. Electric oven according to claim 1 and 2, characterized in that the bracket (16) of the conveyor Profile with a bulge pointing in the direction of displacement of the conveyor, which from the outside a Form (17), as well as has devices to .zu any form of the corresponding bracket (16) solve when the output section (19c, 20c) of the slide is reached. 4-, electric oven according to claim 3> characterized by a semicircular profile of the bracket (16) with a predetermined diameter, which is the diameter of the round shapes (17) is matched and in that the brackets are simultaneously provided with devices that Hold the molds (17) on the slide during their passage in the baking chamber. 5. Electric furnace according to claim 3, characterized in that that the output section (19c, 20c) of the Slideway (19, 20) inclined with a predetermined inclination extends from the oven and floor to the outside and that the slide is used to each mold (17) from the corresponding Release bracket (16). 909Ö46 / 0781 6 »Electric furnace according to claim 2, characterized that the device for holding the iormen (17) on the slide (19, 20) from an im Baking chamber (7) attached profile (25) and a vertical edge (13), which is parallel to the slide (19, 20) run. 7- Electric oven according to any one of claims 1 to 6, characterized in that the hoop conveyor is guided by one of two gear wheels (11, 12) and driven chain (10) is connected, wherein the drive wheel is located in the vicinity of the opening. 9098-40 / 0701