DE20016506U1 - Dual circuit burner with burner ring and center burner - Google Patents

Description

PATENT AND LAWYERS MEINKE, DABRINGHAUS AND PARTNER GbR

ADMISSIONED BY THE EUROPEAN PATENT AND TRADEMARK OFFICE EUROPEAN PATENT AND TRADEMARK ATTORNEYS*

PATENT ATTORNEYS*

JULIUS MEINKE ₁ dipl-ing. WALTER DABRINGHAUS, dipl-ing. JOCHEN MEINKE, dipl-ing.

LAWYER

THOMAS MELKE

ROSA-LUXEMBURG-STRASSE 44141 DORTMUND

TELEPHONE (0231)58 41 90 TELEPHONE (0231) 14 76 70 info @ patent-recht.de

PO BOX 10 46 45

44046 Dortmund, September 22, 2000

DRESDNER BANK AG DTMD, Account No. 1 148 047 (bank code 440 800 50) POSTBANK DORTMUND, Account No. 542 02-463 (bank code 440 100 46)

FILE NO. 52/15917 D/Dr

Applicant: EGA Engineering GmbH
Lindenberastraße 1. 58119 Hagen

'Dual-circuit burner with burnerrina and center burner'

"Dual-circuit burner with burnerrina and center burner"

The invention relates to a dual-circuit burner with a burner body and with a centric center burner and a second burner ring surrounding the latter at a distance, wherein the spark plug and the thermocouple are assigned to the center burner.

Such a dual-circuit burner is known, for example, from DE-41 25 308 or from the burner designed by the applicant in 1986. In the latter design, for example, a compact ring burner with a lateral gas supply leading into a gas ring chamber, the ring burner with a support body held at a distance from the trough plate, was assigned a central burner equipped with the spark plug and the thermocouple. A comparable design is shown in the also mentioned DE-41 25 308 or the associated EP-O 525 299.

The aim of the present invention is in particular to further develop and improve the in-house design with regard to gas supply, burner qualities and controllability while at the same time ensuring economical production.

In a two-circuit burner of the type described at the outset, this object is achieved according to the invention in that the burner body is designed to rest on a glass ceramic plate or to be fixed to a trough plate, the burner body having a central receptacle for the central burner and being equipped with gas passage chimneys distributed over the circumference, which are covered by an intermediate ring while leaving air channels in the interior of the burner, the burner ring of the outer burner being mounted on the intermediate ring.

This design results in an extremely compact two-circuit burner that can be fixed to glass ceramic plates as well as to the recesses of stoves, cooking areas, etc. By forming gas passage chimneys that leave passage openings between them for the ambient air, it is possible to supply sufficient air to the centric center burner, while at the same time making it easy to manufacture, either as a cast part or as a forged part.

Further embodiments of the invention emerge from the subclaims.

The invention is explained in more detail below with reference to the drawing, which shows in

Fig. 1 shows a partially cutaway side view of a dual-circuit burner according to the invention installed in a glass ceramic plate,

Fig. 2 is an exploded view in section of the burner elements of the burner according to Fig. 1,

Fig. 3 a top view of the burner without burner cap and intermediate ring according to arrow III in Fig. 1,

Fig. 4 is a plan view of an alternative design of a burner according to arrows A-A in Fig. 5,

Fig. 5 a section through a burner alternative for installation in a trough plate,

Fig. 6 a section through a center burner for installation of a burner in Fig. 5,

Fig. 7 is a plan view according to arrow VII in Fig. 6,

Fig. 8 is a plan view of the burner base of the burner body according to Fig. 2,

Fig. 9 is a section along line IX-IX in Fig. 8,

Fig. 10 is a plan view of the burner top according to Fig. 2,

Fig. 11 is a section along line XI-XI in Fig. 10,

Fig. 12 is a plan view of the intermediate ring according to Fig. 2,

Fig. 13 is a section along line XIII-XIII in Fig. 12,

Fig. 14 a plan view of the burner ring according to Fig. 2,

Fig. 15 is a section along line XV-XV in Fig. 14,

Fig. 16 is an enlarged plan view of a design of the center burner,

Fig. 6a is an enlarged view through Fig. 6 according to section A-B in Fig. 16 and in

Fig. 7a is an enlarged view of Fig. 7.

Referring to Fig. 1 in conjunction with Fig. 2, the burner shown there, generally designated 1, consists of a burner body 2, which in the example shown is designed in two parts, namely a burner base 3 with a central cam 4 and a burner

Upper part 5, which is mounted on a corresponding cooking area with the interposition of a glass ceramic plate 6 and support seals 7.

As can be seen from Fig. 3, among other things, the upper part of the burner has three gas passage chimneys 8 distributed around the circumference, which have a circular extension of approximately 40°, leaving corresponding spaces of the same size to the interior of the burner, wherein the passage openings 9 of the gas passage chimneys 8 open into an inner circular gas distribution ring space 10, into which a gas supply pipe 11 opens horizontally and eccentrically with a Venturi injector 12 and full-fire nozzle 13, wherein the angle burner with these elements is designated 14 in Fig. 3.

As can be seen from Fig. 1, for example, the bottom profile of the gas distribution ring channel, shown in dashed lines, is designed to rise over 180° from the lowest point in the area of the gas supply pipe 11 to the opposite side in order to ensure optimal gas distribution. As can be seen, when the intermediate ring designated 15 is placed on the burner top part 4, three air passage openings 16 are created for the central burner, generally designated 17.

The intermediate ring has an upper annular groove 18, while the corresponding burner ring 19, which is placed on top and has the burner bores 20, also has a corresponding circular groove 21, with an approximately trapezoidal cross-section, wherein the gas passage bores 20 extend from the acute-angled region of this annular groove 21.

In order to position all elements on or in each other in the correct order, an upward-pointing fixing lug, designated 22 in Fig. 2, is provided on the burner upper part 5, whereby corresponding grooves 23 and 24 running from top to bottom are provided on both the intermediate ring 15 and the burner ring 19.

In Fig. 1 it is also shown that the burner base 3 has receptacles distributed around the circumference, generally designated 25, for springs 26 which serve to support the underside of the glass ceramic plate 6.

In Fig. 2, the gas supply for the central burner 17, designated 27, as well as the associated nozzle 28 are also shown, while the positioning of a thermocouple 29 and a spark plug 30 is only indicated in Fig. 3 in plan view.

Where identical components, in particular functionally identical components, are shown in the other figures, they bear the same reference numerals, even if they are designed slightly differently.

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List of reference symbols

1 dual-circuit burner

2 burner bodies

3 Burner base

4 centric cams (mounting)

5 Burner top

6 Glass ceramic plate

7 support seals

8 gas chimneys

9 through holes

10 Gas distribution ring space

11 Gas supply pipe

12 Venturi injector

13 Full fire nozzle

14 angle burners

15 intermediate ring

16 air passage openings

17 center burners

18 Ring groove

19 Burner ring

20 burner holes

21 Circular ring groove

22 Fixing lug

23 and 24 slots 25 slots

2 6 springs

27 Gas supply

28 Nozzle

29 Thermocouple

30 Spark plug

31 fixing screws

Claims (13)

1. Two-circuit burner with a burner body and with a centric central burner and a second burner ring surrounding the latter at a distance, the spark plug and the thermocouple being assigned to the central burner, characterized in that the burner body ( 2 ) is designed to rest on a glass ceramic plate ( 6 ) or to be fixed to a trough plate ( 6 '), the burner body ( 2 ) having a centric receptacle ( 4 ) for the central burner ( 17 ) and being equipped with gas passage chimneys ( 8 ) distributed over the circumference, which are covered by an intermediate ring ( 15 ) while leaving air passage openings ( 16 ) into the interior of the burner ( 1 ), the burner ring ( 19 ) of the external burner being mounted on the intermediate ring ( 15 ). 2. Two-circuit burner according to claim 1 for fixing to glass ceramic plates, characterized in that the burner body ( 2 ) is designed in two parts with a burner lower part ( 3 ) for engaging under a corresponding recess on the glass ceramic plate ( 6 ) and a burner upper part ( 5 ) for engaging over the glass ceramic plate ( 6 ), wherein receptacles ( 25 ) for pressure springs ( 26 ) are provided on the burner lower part ( 3 ). 3. Two-circuit burner according to claim 1 with a one-piece burner body for fixing to trough plates, characterized in that in the surface of the burner body ( 2 ) which rests on the underside of the trough plate, as known per se, receptacles for fastening screws ( 31 ) are provided and/or on the underside support cams ( 32 ) for supporting on the base plate ( 33 ) of the stove. 4. Two-circuit burner according to one of the preceding claims, characterized in that the burner body ( 2 ) itself or the burner upper part ( 5 ) is equipped with three gas passage chimneys ( 8 ) distributed around the circumference and projecting above the respective fixing plane in such a way that essentially equally large arc regions are formed between the outer wall regions of the gas passage chimneys ( 8 ) to form air passages ( 16 ) for the central burner ( 17 ). 5. Two-circuit burner according to one of the preceding claims, characterized in that the central burner ( 17 ) is equipped with a centric gas supply and a burner cover having the gas passage holes. 6. Dual-circuit burner according to one of the preceding claims, characterized in that the central through-opening in the lower part of the burner body ( 3 ) is designed as a receptacle for a support ring of the central burner ( 17 ). 7. Two-circuit burner according to one of the preceding claims, characterized in that the burner body ( 2 ) or the burner body lower part ( 3 ) is equipped with an annular channel ( 10 ) for gas guidance and a horizontal eccentric gas supply. 8. Two-circuit burner according to one of the preceding claims, characterized in that the bottom of the annular gas supply channel ( 10 ) for the burner ring ( 19 ) rises from a lowest point in the region of the gas supply ( 11 ) to a highest point after a 180° arc. 9. Two-circuit burner according to one of the preceding claims, characterized in that an upwardly projecting fixing lug ( 22 ) is provided on the burner body ( 2 ) or on the burner upper part ( 5 ) for positioning the intermediate ring and/or the burner ring in the desired position, wherein the intermediate ring ( 15 ) and/or burner ring ( 19 ) have guide grooves ( 23 , 24 ) for receiving the fixing projection ( 22 ). 10. Dual-circuit burner according to one of the preceding claims, characterized in that the burner ring ( 19 ) is equipped with a cross-sectionally approximately trapezoidal gas guide groove ( 21 ) for forming a circumferential annular space when resting on the intermediate ring ( 15 ) with gas passage chimneys ( 8 ) opening into this annular channel. 11. Two-circuit burner according to one of the preceding claims, characterized in that the central burner ( 17 ) is equipped with a receiving element which can be inserted into the burner body for receiving the thermocouple ( 29 ) and the spark plug ( 30 ) and with a central through-bore provided with a shoulder, wherein the burner body or the lower part of the burner body is provided with a central cam for engaging in the receiving element with gas supply bores in the thread, wherein when the central burner injector is screwed in, it is fixed directly to the burner body or the lower part of the burner body via the receiving element. 12. Dual-circuit burner according to one of the preceding claims, characterized in that the central burner ( 17 ) is designed as a standing burner. 13. Dual-circuit burner according to one of the preceding claims, characterized in that an annular chamber is provided in the interior of the central burner ( 17 ) to form an impact surface of the gas flow, such that the impact surface is positioned in front of the gas outlet bores.