JPH045893Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a burner device mainly applied to a small gas instantaneous water heater.

(Prior art) Conventionally, as this type of device, for example, the Japanese Patent Publication No. 60-7178
As seen in Figure 2, the upper part of the combustion barrel houses a plurality of parallel burners each having a line-shaped flame opening, each burner opening passing through each burner opening, and each slit adjacent to the side thereof. Types in which a flame-holding plate is provided with secondary air ports of the shape of the shape are known.

(Problem to be solved by the invention) In this case, the ignition electrode is provided on the outside of the end in the length direction of the flame port in the approximately central part, facing from above, and the end is used as the spark part. In such a method, the gas concentration in the spark portion is not necessarily stable, and it is difficult to obtain good ignition.

(Means for Solving the Problems) The present invention aims to provide an apparatus free from such inconveniences, and is aimed at providing an upper part of a combustion shell that accommodates a plurality of parallel burners having linear flame ports. in which a flame holding plate is provided having each burner port inserted through each burner port and each slit-shaped secondary air port adjacent to the burner port on the side thereof, in at least one of both outer burner ports, An ignition electrode is provided on the upper side of the ignition electrode to form a spark part, and the secondary air port adjacent to the outer side of the ignition electrode is located approximately in the middle of the longitudinal direction. The spark plug is deviated outward at approximately the middle portion, and a relatively wide space is formed between the spark portion and the spark portion.

(Example) An example of implementing the present invention will be explained with reference to attached drawings.

The drawing shows a case in which the water heater is applied to a gas instantaneous water heater. In the main body 1, an upper heat exchanger 2 and a phase gas burner 4 having a line-shaped flame port 3 are shown. A nozzle holder 7 which is provided with a combustion cylinder 5 on its lower side that accommodates a plurality of parallel combustion cylinders, and has each nozzle 6 facing each burner 4 on its lower side.
was installed horizontally, and a turbo fan type blower 9 was further provided below the rectifier plate 8 made of punched metal. In the drawing, 10 is a gas conduit connected to the nozzle holder 7, and 11 is the heat exchanger 2.
The water supply pipe on one side is connected to the water pipe, and 12 is the hot water outlet pipe on the other side.

In the upper part of the combustion shell 5, there is provided a flame holding plate 15 having slit-shaped burner ports 13 through which the flame ports 3 are inserted, and slit-shaped secondary air ports 14 adjacent to the slit-shaped burner ports 14 on the sides thereof. At the same time, an ignition electrode 16 is provided on the upper side thereof and fixed to the inner surface of the combustion shell 5.

According to the present invention, at least one of the left and right outer flame ports 3, 3 on the flame holding plate 15, for example, in the case shown, the left flame port 3 is selected for ignition, and The ignition electrode 16 is located at the upper side of the middle part 17 so as to configure the middle part 17 as a spark part, and the secondary air port 14 on the outside thereof is connected to the middle part 18 in the longitudinal direction. The space A is deflected outward to form a relatively wide space A inside thereof.

More specifically, in the case shown, the ignition electrode 16
The upper positive side electrode 16a and the lower negative side electrode 16b are longitudinally extended inward to face approximately the center in the width direction of the intermediate portion 17, and the positive side electrode 16a is It was arranged to face near the outer side edge of the intermediate portion 17 in the width direction.

(Function) To explain its function, when the electrode 16 is activated, a spark is generated in the spark part consisting of the middle part 17 of the flame nozzle 3 on the lower side, and the gas guided to the spark part is ignited. However, in this case, the spark portion 17 has a relatively wide space A on its side, and the intermediate portion 18 in the length direction of the secondary air port 14 is opened to which the secondary air is guided. Thus, the gas introduced into the spark portion 17 is kept at a relatively high concentration, and good ignition can be achieved. This ignition is then propagated in the longitudinal direction within the flame port 3, and then the flame is sequentially transferred to adjacent flame ports 3, resulting in an ignition state over the entire surface.

(Effect of the invention) As described above, according to the invention, at least one of the left and right outer flame ports is used for ignition, and an ignition electrode is provided above the middle part in the longitudinal direction, and the middle part is used as the spark part. At the same time, the secondary air ports on the sides adjacent to the secondary air ports are deflected outward at the intermediate portion in the longitudinal direction to form a relatively wide space inside the secondary air ports, and thus the spark The gas introduced into the chamber is kept at a relatively high concentration with little secondary air mixed in, making it possible to obtain good ignition, and this ignition is then propagated in the length direction of the flame nozzle. At the same time, it has the effect that the flame can be transferred to the inner flame port provided next to it, and ignition can be achieved smoothly and reliably over the entire surface.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of an example of a water heater equipped with the proposed device, Fig. 2 is a partially cutaway side view, and Fig. 3 is a cutaway taken along the - line in Fig. 1. FIG. 4 is an enlarged view of a portion thereof, and FIG. 5 is a perspective view of the ignition electrode. 3... Flame mouth, 4... Burner, 5... Combustion barrel, 1
3... Burner port, 14... Secondary air port, 16...
Ignition electrode, 17... Middle part (spark part), 18
...middle part, A...interval space.

Claims (1)

[Scope of utility model registration request] At the top of a combustion barrel that accommodates a plurality of parallel burners having line-shaped flame ports, each burner port is inserted through each burner port, and each slit-shaped secondary air port is adjacent to the burner port on the side thereof. In a flame holding plate having a flame holding plate, an ignition electrode is provided on at least one of the outer flame ports, located approximately in the middle of the longitudinal direction thereof, and an ignition electrode is provided on the upper side, and the middle part is formed as a spark part. At the same time, the secondary air port adjacent to the secondary air port on the outside is deflected outward at approximately the middle portion in the length direction to form a relatively wide space between the spark portion and the spark portion on the inside thereof. A burner device made by