ITPD20130257A1 - THERMAL PLATE - Google Patents

Description

PROSPECTUS FORM A

PATENT APPLICATION FOR INDUSTRIAL INVENTION

C. TITLE

THERMAL PLATE

O. ABSTRACT

The object of the patent is a thermal plate which is characterized by the fact that it contains a heat accumulator consisting of an aluminum accumulator disc, placed in contact with its first face to the glass or ceramic serving dish, while its second face, which is the lower one is associated with a thin ferromagnetic disc which heated by induction heats the aluminum accumulator disc.

The advantage is a lot of heat accumulation and little weight.

DESCRIPTION

The present invention relates to a thermal plate or a serving plate which can be heated and kept warm.

TECHNICAL PROBLEM

Food particularly served in restaurants, pizzerias, canteens, etc. they are placed hot on serving dishes, which are normally not heated or if they were they would cool quickly.

If the dish is not heated, and this is the situation that normally occurs, hot food releases its heat to the dish and everything cools down in a short time, which is always shorter than the time it takes to consume the food itself.

A cooled food becomes inedible because it is difficult to consume and loses all its organoleptic characteristics and palatability. STATE OF THE TECHNIQUE

To solve the proposed problem, according to the known state of the art, traditionally it has been thought to heat the serving dishes to a high temperature so that the dish accumulates a thermal energy such as to keep it hot for a time sufficient to keep the food warm up to end of their consumption.

This way of doing, however, presents unacceptable problems.

A very hot dish is difficult to handle and in the case of use in a restaurant, a pizzeria or in any case in a room where the dishes are prepared in a kitchen and served at the customers' tables the problem arises for the waiters or for the people. carrying dishes.

The very hot temperature requires a lot of attention in the handling of the dishes and can cause burns or injuries to the person who bring the dishes from the kitchen to the customers' tables.

Plates are also known which have heat accumulators inside them.

A plate of this type, for example, is the one illustrated in WO 2012/176121.

The heat accumulators are ferromagnetic metal discs, usually made of iron, which are heated by induction and accumulate heat which then slowly yield to the plate.

A plate of this type, while solving the problem of keeping the surface where the food is placed hot for a certain time, has the problem that it is particularly heavy because the metal disc, which is substantially made of iron, is itself heavy as it must also have a thickness that is not indifferent to be able to accumulate sufficient heat.

The weight of the plate is not irrelevant and the service staff, especially when there are many people in the premises, must continue to carry heavy plates and this turns out to be a tired situation.

The object of the present invention is to provide a thermal plate which overcomes the problems which occur in plates of a known type.

A consequent primary object is to devise a heat accumulator which is sufficiently light while being able to accumulate a considerable amount of heat.

Not least object is to devise a plate which can in any case be heated by induction so that the edges of the plate are practically cold while the central part is kept at temperature.

These and other purposes that will be further clarified later by the description of an embodiment are achieved by a thermal plant characterized by the fact of comprising a dischiform element in ceramic or similar material, or a serving dish, under which in the central part a heat accumulator disc is positioned and in succession a disc in a heat-insulating material and a shell associated with the serving dish, said heat accumulator disc being constituted by an aluminum disc whose upper face is in contact with the first dish and the lower is contained in a thin metal sheet heated by induction, with lower means of thermal insulation being provided.

Further features and advantages of the invention will emerge from the description of a non-limiting example illustrated with the aid of drawing tables that contain the following figures:

- figure 1 is a perspective view of the complete plate seen from below;

Figure 2 is an exploded view of the parts making up the plate;

- figure 3 shows the component parts of the plate in partial sections;

Figure 4 shows the plate in partial diametrical section.

With reference to the aforementioned figures, the plate looks like a normal serving plate 11) which in its rear part shows a support shell (2), for example to a table.

As can be seen more clearly in Figure 2, where the various components are illustrated in an exploded view. Below the serving plate (1) there is an aluminum disc (3) of considerable thickness.

The aluminum disc (3) is contained in a disc (4} in ferromagnetic material which has an edge {5) which will be folded over the outer edge of the aluminum disc (3).

Below said ferromagnetic disc {4) there is a felt disc (6} heat-insulating, for example using a product such as Pyrogel © (brand of Aspen Aerogels),

The whole is contained in a shell (7) which can be in plastic material, which is glued on the lower part of the plate (1)

Figure 3 shows more clearly in section how the individual parts are made and how a drain (8) is provided in the edge of the aluminum disc (3) where the edge (5) of the ferromagnetic disc (4) is folded.

A thermally conductive paste can be interposed between the ferromagnetic disc 4 and the aluminum disc 3.

This is seen much more clearly in Figure 4 which is the section of the whole.

A plate as described and illustrated is heated by placing it above an inductive emitter which brings the ferromagnetic disc (4) to a high temperature which in turn heats the aluminum disc (5) which becomes the heat accumulator which is then transferred. to the serving dish it is associated with.

A combination of this type makes it possible to have extremely reduced weights and much lower than those which would be obtained if a disc of ferromagnetic sheet of considerable thickness were simply used as an accumulator.

The aluminum that accumulates the heat is relatively light, while the ferromagnetic disc that acts as a transmitter of the heat generated in it by induction is extremely thin and therefore not heavy.

The advantageous result is that of having a plate which maintains the heat for a long time on the face on which the dish to be consumed is placed.

At the same time, the lightness of the dish does not cause particular fatigue for those serving the dishes.

Obviously, while maintaining the same fundamental characteristics, the materials used in particular to make the serving dish and to make the thermal insulation and the final containment shell can be different.

The shell is glued to the serving dish so that water does not enter during washing, which can get wet and damage the insulating felt

The shell is glued to the serving dish so that water does not enter during washing, which can get wet and damage the insulating felt.

Claims (1)

CLAIMS 1-Thermal plate characterized by the fact of comprising a disk-shaped element in ceramic or similar material, or a serving plate, under which a heat accumulator disk is positioned in the central part and in succession a disk made of a heat-insulating material and a shell associated with the serving dish, said heat accumulator disk being constituted by an aluminum disk whose upper face is in contact with the first dish and the lower face is contained in a thin metal sheet heated by induction, with lower means of thermal insulation being provided . 2-Plate as in claim 1 characterized by the fact that said aluminum disc is positioned adherent to the lower face of said serving plate. 3-Plate as in claim 1 characterized by the fact that said aluminum disc is associated at the bottom with a disc of thin ferromagnetic material. 4-Plate as in claim 1 characterized in that a heat conducting part is interposed between the aluminum disc and the ferromagnetic disc. 5-Plate as in claim 1 characterized by the fact that said lower thermal insulation means consist of a heat-insulating felt. 6-Plate as in claim 1 characterized by the fact that all the components below said serving dish are contained in a shell glued with its edge to the serving dish,