DE8604044U1 - Premix gas burner - Google Patents

Description

Joh.Vai llant GmbH and Co GM 555

11. OI 86

Eeschrei ' iu. £

Primary gas burner

The present invention relates to a gas burner Vormi according to the preamble of the main claim.

Such premixed gas burners are known and frequently used Used for heating heat exchangers for gas-water or circulating water heaters. You is in usually assigned a separate cylinder burner, which consists of a cast part, in which an ignition gas nozzle and a Deflection screen for the pilot flame and a thermocouple are assigned. The pilot burner is used both for ignition the main burner as well as for heating a thermocouple, which is the electromagnet of a thermoelectric Ignition fuse with thermostrorri feeds.

In the course of the cheaper and '.' has been found that the cost of the pilot burner are no longer negligible, so the present

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Invention, the object is to largely save the cost of the separate cylinder burner.

The task is solved with the characteristic Features of the main claim.

Further refinements and particularly advantageous developments of the invention emerge from the subclaims

coLj-ia dsr naGhfol ^ snds "Describe *" ¹ forth the sin Aus— * ~ Leading example of the invention based on the figure of

Drawing explained in more detail. .;

k In this drawing, a side view of a row <r

burner is shown how it is used to feed a domestic hot water 1 or circulation water heater. This atmospheric Premixed gas burner consists of a burner chamber 1, forming sheet metal half-shells 2, which have embossings 3, see above that two shells with which become a full embossing i

complementary embossing 3 result in a mixing channel unit 4. f '

So there are a large number of half-embossings lying next to one another! 5, whereby two half-embossings are placed on top of each other in the sheet metal shells, creating a cylindrical relationship _:

create a conical mixing duct pipe. The only one Mixing channel consists of an inlet cone 6, a narrow ^

place 7 and an outlet cone 8, with all outlet cones |

8 open into a common distributor chamber 9. The upper

Page 10 of the distributor chamber is covered by a combustion

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Covered sheet metal provided with mixing outlet slots. %

Each inlet cone 6 is one in a gas supply pipe 11 |

P arranged gas nozzle 12 assigned, which at a distance from I

f cone is so that the blowing gas nozzle is primary air from the gap 13 between the tube 11 and the bottom 14 of the Upper part 1 can have in the channels.

How many channels 5 are embossed in a single sheet metal shell is different and depends on the device or the size of the heat exchanger to be heated away. According to the invention, however, at a lateral end 15 a separate pilot burner mixing channel 16 in half embossed in a sheet metal shell 2, which, like the other mixing channels 5, has an inlet cone 6, a constriction 7 and an outlet cone 8 adjoining it. A distribution chamber i jit does not exist, but j an outlet space 17 for this purpose. This outlet space lies at a small distance 18 next to the area of the combustion mixture outlet slots of the main combustion area 13. The inlet cone 6 is assigned an ignition gas nozzle 19 which is connected to a separate ignition gas line in which a Pilot gas valve is located.

By integrating the Züntigasmi channel into the parts that also form the mixing channels for the main burner * can the separate duct body according to the state of the art

nik not applicable. Since the outlet of the pilot burner is immediately is adjacent to one of the outlets of the main burner, the shielding plate can also be omitted here. Just that Thermocouples, which are necessary anyway, and the gas nozzle must be attached.

The pilot burner device is required for atmospheric premix burners with electronic ignition and very high proportion of primary air. The gas air flow is through the high premix is difficult to ignite, so the ignition gas mixing duct is designed in such a way that the primary air content at the ignition burner is smaller and the mixture is more ignitable will. This can be done by making the premixing duct smaller in diameter, by enlarging the Diis diameter or by providing a flow resistance in the channel or outlet profile.

Claims (4)

/; ! ......... ..Joh. Vaillant GmbH u.Co A 'GM 555 (H. 04.86 claims 1. Premixed gas burners, especially atmospheric ones Premixed gas burner, partly in two sheet metal parts molded mixing channels, each with one Gas nozzle is assigned, and a premix ignition burner for igniting the gas-air mixture emerging from the ducts, characterized in that, that "the premixing channel (16) of the pilot burner of the sheet metal parts (2) is formed .. 2. Premixed gas burners, especially atmospheric ones Premixed gas burner, with him as a unit having ignition gas premix burner. 3. Premixed gas burner according to claim 1, characterized in that that the Vormi schkanal (16) of the pilot burner in both sheet metal parts (2) of the Vormi gas burner is formed. 4. Premix gas burner with one of the claims 1-3, characterized in that the Vormi schkanal (16) of the pilot burner half in both Sheet metal parts (2) of the premix gas burner is molded.