A burner for glass-ceramic cooker tops.

Abstract: Improvements in burners for glass-ceramic gas cooker tops, whose burners use a perforated ceramic hot plate. These improvements consist of a set defined by two burner units (2 and 3), different and independent, one (2) with a circular-shaped ceramic plate (6) and the other (3) with an annulus-shaped ceramic plate (7). The first of said burner units (2) is situated in the internal space defined by the annulus which delimits the second burner unit (3). The perforated ceramic plates (6 and 7) used in both burner units (2 and 3) are arranged on the same plane or can be arranged in different planes.

Description: The present invention refers to a burner for glass-ceramic gas cooker tops according to the preamble of claim 1. The gas cookers, with burners covered by a glass-ceramic plate, are equipped with a combustion chamber which has a side opening for the outlet of combustion products. On the opposite side to that equipped for use, one or several burners of said fuel can be used. British patent no. 1535931 shows a burner for glass-ceramic cookers which have two combustion chambers, one being circular and the other annular, the circular chamber being inside the annular one, both chambers being covered by a ceramic plate. The invention has as its objective a burner for glass-ceramic gas cooker tops according to claim 1. In order to facilitate understanding of not only the composition but also the use of the burner of the invention, following is a practical example of use, this operation being merely by way of a guideline and in no way definitive of same, as shown in the adjoining drawings, in which: Figure 1 shows a plan view of the burner. Figure 2 shows a side elevation view of the burner. Figure 3 shows a sectional view through line III-III of figure 1. Figure 4 shows a sectional view through line IV-IV of figure 1. Burner 1 is formed of two burner units 2 and 3 with independent internal areas 4 and 5. Burner unit 2, with circular cross-section, is arranged in a concentric fashion in the annular area defined by the burner unit 3, which presents an annulus-shaped cross-section. Burner unit 2 is equipped with a ceramic end plate 6 in which gas combustion is carried out. Burner unit 3 is equipped with a ceramic end plate 7 in which combustion is also carried out. Along the lower sides of internal areas 4 and 5, Venturi tubes 8 and 9 are connected, arranged in a radial direction. The input of Venturi tube 8 to enclosure 4 can be from the side, as represented in figure 4, or along the lower part of burner unit 2, tube 8 thus forming a 90° angle instead of a straight line. Venturi tube 8 can present convergent conical forms, as represented by tube 9. Gas enters each free end of Venturis 10 and air inputs 11 are arranged laterally. In the interior of areas 4 and 5, the mixture is carried out, being discharged by a diffuser of a gas-air stream which is burnt in plates 6 and 7.

Claims: A burner for glass-ceramic gas cooker tops with a perforated ceramic plate being formed of a set of two burners, one with a circular-shaped ceramic plate (6), and the other with an annulus-shaped ceramic plate (7), the first of these being situated in the internal area defined by the annulus of the second burner unit, characterized by the fact that the two units have different and independent bodies so that burner unit 2, with the circular cross-section, is arranged in a concentric or eccentric fashion in the annular area defined by the burner unit 3, which presents the annulus-shaped cross-section, and by the fact that the perforated ceramic plates (6, 7) of both burner bodies are arranged in different planes.

Inventors: BERTOMEU MARTINEZ FRANCISCO, BERTOMEU MARTINEZ, FRANCISCO
Applicants: CATALANA GAS SA, VIDAL SOSPEDRA SERGIO, CATALANA DE GAS S.A.
Application year: 1990
Main classification: F24C3
IPC codes: F24C3