JP2777970B2 - Gas burner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas burner mainly used for a stove, which is ignited by a spark from an ignition electrode.

[0002]

2. Description of the Related Art In a burner using natural gas,
A lift phenomenon that makes the flame unstable tends to occur, and a means for preventing this is required. FIGS. 6 (a) and 6 (b) show one of the conventional examples to which this means is applied, wherein a is a head, b is a body, c is a main flame hole groove defined by a ridge d, and e is 2 Three ignited flame holes grooved by two ridges f and long ridges d on both sides, g is an eaves portion, h is a spark target facing the central ignited hole groove e and is low in the circumferential direction. provided ridges d _1, have decelerated recessed portion i is provided in each ignition flame Anamizo e, pilot flame hole has a deceleration ignition flame holes.

In this burner, the eaves g are for preventing the spark plug disposed below the target h from being wetted by the broth, and the speed reduction step i reduces the ignition flame after ignition. To prevent lift.

The gas ejected from the ignition flame hole formed by the ignition flame hole groove e and the body b is so-called directly ignited by a spark flying from the ignition electrode k to the target h, and then the gas is injected into the main flame hole groove c. The gas is discharged from the main flame hole formed in the body b.

[0005] In this gas burner, the ignition by the spark flying from the ignition electrode k to the target h is performed with very little contact with the gas ejected from the ignition flame, so that the raw gas is qualified for the spark. Squirting into
A region where the degree of mixing with air is slightly different is formed so that an optimal ignition condition is formed in at least a part of the discharge path.

However, there are various kinds of gases used. For example, for a gas which is easily lifted such as natural gas, the main flame hole is a deceleration flame hole for preventing lift, and the ignition flame hole is used for the ignition flame hole. Is a deceleration flame hole by providing a deceleration step portion i. On the other hand, when LP gas has the same input as the natural gas, the amount of LP gas ejected is smaller than that of the natural gas.
When the stepped portion i is provided as described above to form a deceleration flame hole, the gas jetting force is weakened, so that the gas cannot be spouted properly and the ignition performance is deteriorated. Therefore, it is conceivable to bring the ignition electrode closer to the flame hole, but there is a disadvantage that the spark leaks to the flame hole, and the gas concentration near the flame hole is high, and a region having various gas concentrations in the discharge path is not formed. Inconvenience occurs.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to prevent both an ignition mistake and a lift in an ignition flame in the gas burner.

[0008]

According to one aspect of the present invention, as set forth in claim 1, there are a plurality of main flame holes and a group of ignition flame holes, and a front of the ignition flame holes. In a gas burner with a target for spark generation in
Characterized in that both sides of the burner port of the non-reduction pilot flame holes facing the target and deceleration ignition flame holes.

According to another aspect of the present invention, as set forth in claim 2, there are provided a plurality of main flame holes and a group of ignition flame holes located at positions retracted from the main flame holes. sequentially continuously provided to head the target eaves portion and a spark for generating in front of the flame Anamizo, in the gas burner forming the main fire hole and the ignition flame holes are placed on the body, a non-reducing facing the target
Both sides of the burner port fast ignition fire hole, characterized in that the deceleration point flame holes.

[0010] Still another solution is the above-mentioned claim 1 or 2.
In the above means, the deceleration ignition flame hole is formed by providing a deceleration step portion having an increased depth at a front end of the flame hole groove.

[0011]

In the gas burner according to the first aspect, the air-fuel mixture emitted from the non-deceleration ignition flame facing the target at the time of ignition is:
It reaches the space where sparks are generated and is ignited. The mixture is then ignited from the deceleration ignition holes on both sides . The flame from this deceleration ignition flame is stable because lift is prevented.
Stabilize the flame of the non-deceleration ignition flame facing the target.

[0012] In gas burners according to claim 2, the gas mixture exiting from the ignition flame holes of non-reduction facing the target, passes below the overhanging portion is ignited to reach the target, both sides of the reduced <br/> speed point Ignite the mixture coming out of the flame hole and target
The flames of the opposed non-deceleration ignition flames are stabilized by the flames of the deceleration ignition flames on both sides . The eaves prevent wetting of the ignition electrode by boiling water.

In the gas burner according to the third aspect, the flame coming out of the deceleration ignition flame hole is subjected to a deceleration action when passing through the deceleration step.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a gas burner, 2 is its head,
3 is a body. Head 2, the vertical direction has a central cylindrical portion 5 surrounding the center hole 4 of the air-fuel mixture distribution chamber 7 by the upper surface 3 ₁ of the lower surface and the body 3 of the valve head 6 extending from the central cylindrical portion 5,
A main flame hole 8, an ignition flame hole 9 and the like are formed. As shown in FIGS. 2 and 3, the main flame holes 8 are composed of regularly arranged radially extending ridges 1.
Deep flame groove 8 ₁ or shallow flame groove 8 ₂ provided between 0, 10 ...
To be formed by the upper surface 3 ₁ of the body 3.

The pilot flame hole 9 is formed by the upper surface 3 ₁ of the ignition flame Anamizo 9 _1, 9 ₂ and the body 3, the point flame Anamizo 9 _1,
9 ₂ is provided on the pedestal 11 at a position recessed from the ridges 10, 10 and is formed by a long ridge 12 and a short ridge 13.

An entrance 14 is provided at the innermost part of the base 11, and an eave 15 is provided at the front end of the base 11 through a vertical surface 151.
Is formed, and a discharge target 16 is projected from the center of the front end.

The pilot flame Anamizo 9 ₁ center in wider depth compared to sides of the ignition flame Anamizo 9 ₂ is constant, the target 16
Are opposed deceleration recessed portion 17 to increase the depth on both sides of the front end of the ignition flame Anamizo 9 ₂ is formed on. And
By mounting the head 2 to the body 3, the ignition flame Anamizo 9 _1, 9 ₂ and the upper surface 3 ₁ and in a non-deceleration pilot flame holes 9 ₁₁ of the body 3
(FIG. 4) and a deceleration ignition flame hole 9 ₂₁ (FIG. 5) are formed. Incidentally, the reduction step portion 17 for a deceleration ignition flame holes,
It may be provided on the body 3 side so as to face the ignition flame hole grooves 9 ₂ , 9 ₂ .

[0018] figure 18 is intended to be fitted into the recess 3 _second body 3 by the positioning projection, when thereby reseat the head 2 to the body 3 after removal from the body 3 for cleaning or the like, an ignition electrode And the target 16 always face each other. Reference numeral 19 denotes a temperature sensor elastically contacting the bottom surface of the cooking device, and reference numeral 20 denotes a protection ring for the temperature sensor 19, which is a head 2.
It is continuously provided in the column 20 ₁ which extends from.

As shown in FIG. 5, a notch 21 is provided on the outer peripheral side of the body 3 located below the ignition flame hole 9.
Ignition electrode 22 to the cutout portion 21 is attached to the body 3 via a suitable fitting, the electrode 22 ₁ is directed to the target 16. In addition, the soup tray 23 and the goto 24 are arranged in the same manner as the conventional one. The ignition electrode 22
Of course, may be attached to a stove body (not shown) to which the body 3 is fixed.

With the above configuration, the ignition mixture is not reduced from the mixture distribution chamber 7 along the inlet 14 at the time of ignition.
Flowing a fast ignition flame holes 9 ₁₁ deceleration ignition flame holes 9 _21, a central non
Mixture leaving the deceleration ignition flame holes 9 _11, large straightness because there is no reduction step portion, reaches the eligibility near the target 16, it is ignited by a spark generated between the electrodes 22 ₁ and the target 16, then both sides igniting gas from the deceleration ignition flame holes 9 ₂₁ to ignite the main flame bore 8 aligned in the circumferential direction.

[0021] Then, the non-reduction pilot flame holes 9 ₁₁ Flame,
It is flame holding by both sides of the reduction pilot flame holes 9 ₂₁ flame, preventing the lift of the flame exiting the central pilot flame holes 9 _11.

Further, means for decelerating the gas mixture flowing through the deceleration point flame Anamizo 9 ₂ is not limited to the stage shape, it may be configured to enlarge the flow area by the inclined surface or arcuate surface.

Further, in the above-described embodiment, the flame holes 8 and 9 are directed to the outer peripheral side of the burner 1 because the outwardly directed gas burner has been described. Alternatively, a burner having each of the flame holes 8 and 9 may be constituted only by the head 2.

[0024]

As is apparent from the above description, according to the first and second aspects of the present invention, the air-fuel mixture emitted from the non-deceleration ignition flame located at the position facing the spark generating target is directed to the target side. can proceed to eligible toward, after the ignition both
Flame coming out of the side deceleration ignition flame hole prevents lift
Therefore, there is an effect that a stable ignition flame can be generated regardless of the gas type .

Further, according to the third aspect of the invention, there is an effect that the ignition flame of the deceleration ignition flame hole is decelerated by the deceleration step portion to stabilize the ignition flame.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention.

FIG. 2 is a bottom view of the head of the embodiment.

FIG. 3 is an upper and lower perspective view of the same.

FIG. 4 is a longitudinal sectional view of the same.

FIG. 5 is a longitudinal sectional view of an ignition section passing through a deceleration ignition flame hole.

6A and 6B show a conventional example, in which FIG. 6A is a longitudinal sectional view, and FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Gas burner 2 Head 3 Body 7 Air-fuel mixture distribution chamber 8 Main flame hole 9 Ignition flame hole 9 ₁ , 9 ₂ Ignition flame hole 14 Inlet 9 ₁₁ Non-deceleration ignition flame hole 9 ₂₁ Deceleration ignition flame hole 15 Eave part 16 Target 17 Step part for deceleration

Claims (3)

(57) [Claims] 1. A gas burner having a number of main flame holes (8) and a group of ignition flame holes (9), wherein a spark generation target (16) is provided in front of the ignition flame holes (9). Non-deceleration ignition flame hole (9 ₁₁ ) facing the target (16)
Gas burner, characterized in that the deceleration point flame holes (9 ₂₁₎ to both sides of the burner port of. 2. A large number of the main flame Anamizo (8 _1, 8 _2), a group of pilot flame Anamizo (9 ₁ at the position away from the main flame Anamizo (8 _1, 8 _2), 9 ₂ ), And the ignition flame hole groove (9 ₁ , 9 ₂ )
(15) and a spark generation target (1)
In the gas burner in which the main flame holes (8) and the ignition flame holes (9) are formed by mounting the heads sequentially connected to the body (3) on the body (3), the non-deceleration point facing the target (16) gas burner, characterized in that the flame hole (9 ₁₁₎ deceleration point flame hole both sides of the burner port (9 _21). 3. The deceleration ignition flame hole (9 ₂₁ ) is formed by providing a deceleration step (17) having an increased depth at the front end of the flame hole groove. Gas burner.