PT87504B - GLASS-CERAMIC FOGA EQUIPPED WITH INFRARED-TYPE GAS BURNERS - Google Patents

Abstract

This patent for industrial invention concerns a ceramic-glass top with infrared gas burners having two non-communicating chambers placed in concentric position with rescue of the heat of the going-out smokes.

Description

SOCIETA ITALIANA ELECTTRORISCALDAMENTO S.R.L.

GLASS-CERAMIC STOVE FITTED WITH Π GAS BURNERS

INFRARED PO

-2 Currently on the market there are electric cookers equipped with a ceramic glass surface or kitchen cookers equipped with atmospheric gas burners.

The glass-ceramic surface with gas radiation allows you to enjoy all the merits and advantages of a smooth kitchen stove that is easy to clean and that can be used as a work table in a compartment. small, etc.

Until now, only electric cookers have offered all these advantages.

In the case of traditional stoves, in order to have four heating nozzles, it was necessary to use four gas burners of the atmospheric type; in the case of the present invention, thanks to the action of only two infrared gas burners under ceramic glass, it is possible to effectively have four heating nozzles due to the fact that the heat of recovery of the combustion gases is removed before leaving they are required to pass through a food heating zone, thereby radiating heat energy that will be used to heat other culinary vessels.

Therefore, the heat released by a single burner can be used to heat two vessels simultaneously, with the consequent gas savings that this implies.

new chiemador placed under the kitchen stove is basically characterized by the particular form of construction of the gas mixing chambers that su-3 -

carry the glass-ceramic plate (A) of the infrared burner.

A first chamber (B) of circular and annular shape is constructed in order to be able to count inside it a second chamber (C) of gas mixtures which is smaller than the first but which also has a circular shape.

These mixing chambers are both watertight and therefore are not in communication with each other, but are in direct contact with the infrared type burner that must be fed by them.

With this arrangement it is possible to obtain an optimum functioning by the burner since it is possible to regulate the ignition according to the amount of heat that is necessary for heating food products. In fact, it is possible to light only the outer ring burner, the so-called semi-fast burner (intermediate capacity), or to light only the internal burner, the so-called auxiliary burner (minimum capacity), or even to accept both burners thus obtaining a burner compound, the so-called fast burner (maximum capacity).

Fig. 1 of the accompanying drawings shows a schematic and sectional view of a burner according to the invention; In this figure, the infrared type burner (A), the separate chambers (B) and (C), the Venturi tubes (D) and (F) and the diffuser (E), which distributes the gas mixture evenly, are given evidence. and air before it ignites on the ceramic tile surface. Fig. 2 is a plan view of the kitchen stove, showing the flue gas ducts produced by the front flames or nozzles in dashed lines; these ducts conduct the flue gases towards the holes

(G) forcing them to pass through the heat recovery zones (H).

The operation of the outer annular burner, called a semi-rapid burner, is due to the gas that, mixed with the primary combustion air, is injected into the main chamber (B) through a circular tube of Venturi (D) that crosses diametrically both this auxiliary chamber (C). The functioning of the internal burner, called the auxiliary burner, is due to the gas which, mixed with the primary combustion air, is injected into the auxiliary chamber (C) through a Venturi tube (F) of circular section that presents a curve elbow-shaped; this gas ignites on the surface of the ceramic plate of the infrared burner in the zone (1). In the case of simultaneous operation of both burners, the gas mixed with the primary air is injected through the venturi tubes (D) and (F), respectively, inside the main chamber (B) and the auxiliary mixing chamber (C ) and ignites over the entire circular surface of the ceramic plate of the infrared burner in zones (1) and (2).

The three modes of operation of the infrared burner are possible thanks to an integrated system of electronic triggers and electronic probes that automatically control the ignition, regulation and extinguishment of the burner by opening or closing the solenoid valves that control the admission of gas; in addition, said system constantly controls (ionization control) the device in its entirety during its operation, systematically interrupting the gas supply to the chiemador every time it goes out.

All of this makes the system extremely safe and reliable.

These are the schematic modalities sufficient to carry out the patent which, when applied in practice, may change without prejudice to the scope and spirit of its inventive concept.

Claims (5)

Anspruch [en] 1 ³ . - Glass-ceramic cooker equipped with infrared gas burners, characterized in that the ceramic plates of the infrared burners are supported by two gas mixing chambers, the first of which, in an annular form, contains the second one which is smaller than the first and is placed in the center so that it can be contained by the first, both of which are watertight in order not to be in communication with one another. 2 ³ . A glass-ceramic cooker equipped with burners, according to the preceding claim, characterized by having one or more infra-red type burners formed by two distinct chambers having different capacities and which can function separately or at the same time in a manner to make that in the same cooking nozzle it is possible to light a small flame (auxiliary flame) or an annular medium flame (semi-rapid flame) or, by means of simultaneous ignition, a large flame (rapid flame). 3 ³ . A glass-ceramic cooker according to claims 1 and 2, characterized in that the combustion gases produced in the burners are conveyed towards the outlet of flue gases passing through an area used for cooking other products . -7 4 ^â . A glass-ceramic cooker according to claims 1, 2 and 3, characterized in that it has an integrated system of electronic triggers and thermoelectric probes which access, regulate and erase the burners by the operation of electrovalves controlling the admission of gas. 5 ³ . A glass-ceramic cooker, according to the preceding claims, characterized in that it has a diffuser at the outlet of the Venturi tube.