DE6941544U - BURNER FOR GAS HEATED APPLIANCES. - Google Patents

Description

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JUNKER-S ft CO. GMBH, in Wernau / Neckaa?

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Burners for gas-fired devices

The innovation relates to a rust-shaped burner for gas-heated devices, in particular for flow water heaters, with a distributor pipe, row pusher units inserted transversely to it and a gas connection connected to the distributor pipe, which is provided with a gas supply nozzle that forms the connection to the gas supply line and. on which at least one injector nozzle and an an- '. closing injector pipe are detachably arranged in the longitudinal direction of the distributor pipe, the injector nozzle protruding into an air inlet chamber of the gas connection part.

Rust-shaped 6 burners for gas-heated devices of the type mentioned, in which the gas passes through an injector nozzle while sucking in primary air into an injector tube and further over ' a mixing and distribution pipe that flows to the row burners are already known. To ensure good mixing of the gas

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To achieve this with the sucked in air, a relatively long injector tube with a diffuser is required. These burners have generally proven to be advantageous. By appropriate training of the 'injector nozzles were also expensive regulating or throttling devices avoided. Furthermore, diffuser-less injector tubes have become known to assemble units for grasses with a high gas module, such as natural gas or liquefied To create gas. On the other hand, it has been shown that when using ignitable gases under unfavorable operating conditions there is a risk of flames from the row burners through the lower air inlet openings to the injector nozzle overturn.

The innovation is based on the task of addressing the shortcomings listed to fix as flat a construction as possible while maintaining the proven burner shape. {

The task is on a rust-shaped burner for gas-fired Devices of the type listed above according to the innovation solved in that the gas connection part a gas supply nozzle Continuing gas transition part in the form of a gap -ait on the inlet side essentially rectangular cross-section has, on its longitudinal wall corresponding approximately to the inner diameter of the mouth end of the gas supply nozzle or longitudinal walls of the injector nozzle or injector nozzles is or are exchangeably held and its width is no more than 2/3 but at least 1/3 of the inner diameter of the mouth end of the gas supply nozzle.

In a preferred embodiment it is provided that the width of the gas transition part is approximately half the inner diameter corresponds to the mouth end of the gas supply nozzle

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In this form of execution, the training is also taken so that the ratio between the smallest diameter of the Pang nozzle of the injector tube and the total length of the injector pipe is 1 to 8 to 1 to 10.

The rust-shaped burner according to the innovation offers one simple, cost-saving design of an all-gas burner, its mode of operation especially when installing longer injector tubes with approximately the same overall dimensions of the Burner is improved. The installation of longer injector pipes with diffuser without changing the dimensions of the burner ensures particularly good mixing of the gas with the sucked in primary air, which improves operational safety and economy.

The subject of the innovation is explained in more detail with the aid of an exemplary embodiment shown schematically in the drawing explained.

FIG. 1 is a broken longitudinal section through the distributor pipe with the row burners inserted the rust-shaped burner according to the innovation;

Pig. 2 is a partial view of the burner in the direction of the arrow according to FIG.

The grate-shaped burner shown in section in FIG has a gas connection part 10, the gas supply nozzle 101 of which at its mouth end 102 passes through a gas transition part 103 is continued. The gas connection part 10 is with a union nut 11 as a connecting piece to a provided gas supply line, not shown, and protrudes into a manifold 12 of the burner, which is connected to the both end faces gas-tight by means of a screw cap 13 each is completed. The gas connection part 10 is also '

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connected to the distributor pipe 12 in a gas-tight manner. The upper side of the distributor pipe 12 is transverse to its longitudinal axis running row burner 14- used. According to the embodiment Insert sleeves 15 for holding injector nozzles 16 are on both sides of the gas transition part 103 and injector tubes 17 are provided which are arranged in pairs coaxially to one another. The injector nozzles 16 and the Injector pipes 17 are screwed into the insert sleeves 15 on both sides of the grass transition part 103, so that the Injector nozzles 16 can be easily replaced and the injector tubes 17 can be detached. The injector nozzles 16 have a relatively small nozzle cross-section, see above that the gas leaves the nozzle at a relatively high speed and thus a corresponding suction pulse on the exerts air entering through the air inlet chambers 18. The passage cross section of the injector tube 17 narrows in of the collecting nozzle 171 up to the constant cross-section of the middle part 172 and widens again in the subsequent one Diffuser 173. To this extent, the design of the burner is known.

According to the innovation, the gas connection part 10 has a Gas transition part 103 continuing gas supply connection 101 in the form of a gap with an essentially rectangular one on the inlet side Cross-section, at its approximately corresponding to the inner diameter of the mouth end 102 of the gas supply connector 101 Longitudinal walls 104, the injector nozzles 16 are interchangeably lined and their width is at most 2/3 but is at least 1/3 of the inner diameter of the mouth end 102 of the gas supply nozzle 101. With the preferred Embodiment, the width of the gas transition part 103 corresponds approximately to half the inner diameter of the Muzzle end 102 of the gas supply nozzle 101. Through the ' design and dimensioning of the gas transition part 103 according to

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the innovation, it is possible to dimension the injector tubes 17 longer, so that the ratio between the smallest diameter the catching nozzle 171 of the injector tube 17 and the total length of the injector tube is 1 to 8 to 1 to 10.

With the same length of the distributor pipe 12, the innovation offers the possibility of installing longer injector pipes 17, which improves the operation of the burner, since. a better mixing of the gas with the sucked in air is achieved. Of course, the design according to the innovation can also be used in an equivalent manner in burners with only one injector nozzle and one injector tube.

Claims (3)

Junkers Protection requirements Rust-shaped burner for gas-heated devices, especially for instant water heaters, with a distributor pipe, in-line burners inserted transversely to this and a gas connection part connected to the distributor pipe, which is provided with a connection to the gas supply line forming gas supply nozzle and at least on which an injector nozzle and a connecting injector tube are detachably arranged in the longitudinal direction of the manifold, the injector nozzle in a ventilation inlet chamber of the gas connection part protrudes, characterized in that the gas connection part (10) a gas transition part continuing the gas supply nozzle (101) (103) in the form of a gap with the inlet side has a substantially rectangular cross-section, at which approximately the inner diameter of the mouth end (iO2) of the gas supply nozzle (101) corresponding longitudinal wall or longitudinal walls (IO4) the injector nozzle or injector nozzles (i6) is or are exchangeable and its width is no more than 2/3 but at least 1/3 of the inner diameter of the mouth end (102) of the gas supply nozzle (101). 2. Burner according to claim 1, characterized in that that the width of the gas transition part (103) is about half the inner diameter of the mouth end (102) corresponds to the gas supply nozzle (101). 3. Burner according to claim 1, characterized in that the ratio between the smallest Diameter of the collecting nozzle (171) of the injector pipe (i7) around the total length of the injector tube (17) 1 to 8 to 1 to 10 4 ^ -9.7.70