DE29505201U1 - Electrode arrangement for a gas burner - Google Patents

Description

Joh. Vaillant GmbH u. Co. GM 1352

2 0 March 1995

The invention relates to an electrode arrangement according to the preamble of claim 1.

In such electrode arrangements, each electrode is usually held in its own carrier plate or the electrode or its ceramic body directly penetrates the wall of a combustion chamber that accommodates a burner.

However, this has the disadvantage that the individual electrodes can only be adjusted when they are mounted on a combustion chamber. This results in a corresponding amount of assembly work.

The aim of the invention is to avoid these disadvantages and to propose an electrode arrangement of the type mentioned at the beginning, which can be largely pre-assembled so that only a small amount of assembly and adjustment work is required when installing it in a combustion chamber.

According to the invention, this is achieved in an electrode arrangement of the type mentioned at the outset by the characterizing features of claim 1.

The proposed measures ensure that only the retaining plate needs to be mounted when inserting the electrodes into the wall of a combustion chamber. The electrodes can be adjusted accordingly during the manufacture of the electrode arrangement.

The features of claim 2 result in the advantage that the adjacent electrodes can be adjusted accordingly over a wide range in order to be able to maintain a predetermined ignition voltage.

Due to the features of claim 3, the third electrode, which essentially serves to monitor the flames of the burner, can be adjusted within wide limits.

The invention will now be explained in more detail with reference to the drawing.

Fig. 1, 2 and 3 an electrode arrangement according to the invention in top view, side view and front view.

The same reference symbols indicate the same details in the figures.

The electrode arrangement according to the invention has an angled holding plate 1 which is provided with holes 2 for receiving fastening screws with which it is fastened to a wall of a combustion chamber of a heating device.

One leg 3 of the holding plate 1 is provided with openings, each of which is surrounded by a collar 4 and in which the electrodes 5, 6, ₁₁ or their ceramic bodies are held.

Metal pins 8, 9 of the electrodes 5, 6 are, as can be seen from Fig. 2, angled twice. By turning the two electrodes 5, 6, the distance between the free ends of the two metal pins 8, 9 can be adjusted and thus an ignition spark can still be achieved if the ignition voltage is insufficient.

The metal pin 10 of the electrode 7 is only angled once. Here too, the position of the free end of the metal pin 10 in relation to a burner in the combustion chamber can be changed by turning the electrode in the holding plate 1.

In principle, the position of the free ends of the metal pins 8, 9, 10 of the electrodes 5, 6, 7 can be determined when they are installed in the holding plate 1, whereby the position of the electrodes 5, 6, 7 can be fixed, for example, by cementing them in place. When installing the electrode arrangement in a combustion chamber, it is sufficient to attach the holding plate 1 to the combustion chamber wall, which has a corresponding recess.

Claims (1)

Joh. Vaillant GmbH u. Co. GM 1352 2 0 March J995 CLAIM Electrode arrangement for a gas burner, in which three electrodes provided with metal pins and held in ceramic bodies are held in a carrier plate, the carrier plate being penetrated by the ceramic bodies, characterized in that the ends of the metal pins (8, 9) of two adjacent electrodes (5, 6) are angled in a manner known per se, their ceramic bodies being arranged rotatably within the carrier plate (1) in such a way that the distance between the free ends of the metal pins (8, 9) of these electrodes (5, 6) can be adjusted in accordance with the intended ignition voltage and that the third electrode (7), which is essentially intended for flame monitoring, is angled obliquely in one end region of its metal pin (10).