JPS5833418Y2 - gas igniter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a gas ignition device, and is particularly aimed at reducing the number of parts and preventing ignition failures due to boiling liquid adhering to spark plugs and the like.

Ignition devices used in general gas stoves, gas staples, etc. are equipped with a pilot nozzle, which is supplied with gas only when the main gas burner is ignited, and which is set to emit a relatively large amount of gas, and a pilot nozzle that is set to emit a relatively large amount of gas. A support plate that integrates a guide plate 1-' for guiding the gas to the gas burner and a spark plug for applying a spark to the gas ejected from the pilot nozzle was installed near the main gas burner.

Therefore, boiling liquid and the like tend to adhere to the ignition device, resulting in ignition errors due to adhesion.

In addition, since the support plate is fixed to equipment around the main gas burner, it is difficult to align the support plate, and ignition errors may occur due to incorrect attachment of the support plate.

The present invention has been devised in view of the above points, and embodiments of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a main gas burner formed by casting, which has a ring-shaped flame hole part 3 with a large number of flame holes 2, 2, etc. formed on the upper outer periphery, a lower end facing the main gas nozzle 7, and an upper end facing the main gas nozzle 7. It consists of a substantially trumpet-shaped mixing part 4 which is connected to the flame hole part 3 and whose upper surface peripheral wall is inclined obliquely upward 4a.

Reference numeral 5 denotes a cock body having a substantially funnel-shaped outer box 6 whose top surface is closed with a lid plate 10, which includes a main gas nozzle 7 screwed onto the lower end of the outer box, and a gas jet port screwed onto the peripheral wall of the outer box 6. A pilot nozzle 8 is provided opposite to the lower part of the upper circumferential wall of the mixing section 4 of the main gas burner 1, and a pilot valve 9 is provided to control the opening and closing of the gas flow path leading to the pilot nozzle. A closed hole (not shown) protruding through the cover plate 10 and rotatably housed in the outer box 5 and the pilot valve 9 are operated to open and close, and this operating shaft is attached to the upper surface of the cover plate 10. A piezoelectric device 13 supported by a fixed fixed plate 12 and operated in conjunction with this operating shaft is also provided on the upper surface of the cover plate 10.

Reference numeral 14 denotes a support plate formed by appropriately bending a sheet metal, which holds the ignition plug 15 on the negative side and integrally forms the counter electrode 16 of the ignition plug 15 on the other side, and holds the ignition plug 15 and the counter electrode. 16 constitutes an igniter for igniting the gas ejected from the pilot nozzle 8.

This support plate 14 is connected to the electrode 1 of the spark plug 15.
7 and the counter electrode 16 are fixed to the outer box 5 with screws 18 so as to be located in the ejection paths of the pikes 1 to the nozzles 8.

19 is a lead wire that connects the piezoelectric device 13 and the electrode 16;
20 is a legitimate child.

When igniting the main gas burner 1, the operating shaft 11 is operated to open the closure (not shown) and the pyrowers 1 to 9, and at the same time supply gas to the pilot nozzle 8 and the main gas nozzle 7, the piezoelectric device 13 is operated to generate a spark discharge between the electrode 17 and the counter electrode 16, and the spark ignites the gas ejected from the pilot nozzle 8.

Then, the combustion flame formed in front of the jet nozzle of the pilot nozzle 8 first hits the mixing part 4 and then flows along the mixing part 4 to one of the flame holes 2, 2, . . . of the flame hole part 3. guided by the department,
The so-called main gas burner 1 is ignited by igniting the gas ejected from some of the flame holes 2.

As described above, the gas ignition device according to the present invention includes a pilot nozzle to which gas is supplied only when the main gas burner is ignited, an ignition plug, and its opposing electrode, an igniter that ignites the gas ejected from the pilot nozzle, and a main gas nozzle. is attached to the cock body, and the main gas burner is composed of a flame hole portion having a flame hole formed therein, and a mixing pipe portion whose upper peripheral wall is inclined obliquely upward, and whose lower end faces the main gas nozzle and whose upper end is connected to the flame mouth portion. 1. The gas outlet of the nozzle is arranged opposite to the lower part of the upper circumferential wall of the mixing tube so that the flame emitted from the outlet hits the upper circumferential wall of the mixing tube and then reaches the flame opening along the upper circumferential wall. The combustion flame ejected from the pilot nozzle hits the lower part of the upper circumferential wall of the mixing tube, is guided upward along the upward slope of the upper circumferential wall, reaches the flame hole in the flame opening, and produces flame. The gas ejected from the hole is ignited, but there are no obstructions along the way, and the combustion flame is guided smoothly by the upper peripheral wall of the mixing pipe that slopes upward, so even if the gas pressure drops slightly, the combustion flame can be ignited reliably and safely. Can be safely ignited without explosive ignition.

Further, there is no need for a guide plate for guiding the ejected gas from the pilot nozzle to the main burner, thereby reducing costs and preventing boiling liquid from adhering to the ignition device portion such as the pilot nozzle.

[Brief explanation of the drawing]

FIG. 1 is a top view of the ignition device according to the present invention, and FIG. 2 is a side view of the same. 1... Main gas burner, 2, 2... Flame hole, 4... Mixing section, 5... Cock body,
8...Pilot nozzle.

Claims (1)

[Scope of utility model registration request] The main gas nozzle and the igniter, which includes a pilot nozzle to which gas is supplied only when the main gas burner is ignited, a spark plug, and its counter electrode, and which ignites the gas ejected from the pilot nozzle, are attached to the cock body, and the main gas burner is turned into a flame. It is composed of a flame hole section with holes formed therein and a mixing pipe section whose upper peripheral wall is inclined obliquely upward so that the lower end faces the main gas nozzle and the upper end is connected to the flame port section, and the gas jet port of the pilot nozzle is connected to the gas jet port from the jet port. A gas igniter characterized in that the gas igniter is disposed opposite to the lower part of the upper circumferential wall of the mixing tube section so that the ejected flame reaches the flame outlet along the upper circumferential wall after impinging on the upper circumferential wall of the mixing tube section.