JPH03164611A - Burner for portable cooking stove - Google Patents

Abstract

PURPOSE:To prevent a defective operation in a spark electrode due to overflowing, etc., of the cooking liquid from a cooking pan/by the constitution that the end of the ceiling section is provided with a wall section which encircles the ceiling section and the wall section has a cut-out section at the place other than the upper section of the electrode. CONSTITUTION:A burner main body 1 consists of a burner body 6 and a burner cap 7. The burner cap 7 is shaped substantially like a disc and consists of an annular wall section 73 and a ceiling section 7b. At the end of the ceiling section 7b are wall sections 71c and 71d to prevent the overflow of the cooked liquid. In order to let the cooked liquid fall only from a specified spot cut-out sections 71a and 71b are formed in the wall sections 71c and 71d. lf there is a little overflow of the cooking liquid on the upper face 71 of a burner cap 7 during the heating, the cooking liquid, etc., are blocked by the wall sections 71c and 71d, and it does not fall to the sides of a thermocouple 10 and a spark electrode 9 but it falls downwards from the cut-out sections 71a and 71b. The spark electrode 9 and the thermocouple 10 are thereby protected and a stable action can be secured for a long term.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a burner for stoves in which an ignition electrode is disposed below the burner body, and particularly relates to prevention of ignition failure due to boiling over from a cooking pot. .

[Prior Art] Burners for stoves generally have an annular shape and include a mixing chamber with a hollow center, and a row of flame ports for ejecting mixed gas is formed outside the mixing chamber.

In this case, the mixing tube that guides the mixed gas to the mixing chamber is connected to the annular mixing chamber from below, and the center of the burner body is hollow.

The burner is also equipped with a spark discharge type ignition device, the ignition electrode of which is disposed close to the flame port row of the burner.

[Problem to be solved by the invention] However, in stoves, there is boiling over from cooking pots, etc., and with conventional burners for stoves, boiling over boiling liquid drips onto the burner body and reaches the discharge electrode of the igniter. There is a risk that it will stick and cause malfunction.

SUMMARY OF THE INVENTION An object of the present invention is to provide a burner for a stove that can reduce malfunction of a discharge electrode due to boiling over from a cooking pot or the like.

[Means for Solving the Problems] The present invention has a mixing chamber provided in the center and a burner port row formed on the outer periphery of the mixing chamber, and one of the mixing chamber and the burner port row. In a burner for a stove, a roof is provided on one side, and a discharge electrode for ignition is arranged below the roof. The technical means is that the part has a cutout part other than the upper part of the discharge electrode.

In the present invention, when there is boiling over from a pot or the like in a stove, the boiling liquid or the like drips onto the roof.

At the end of the roof part, there is an extension at least above the discharge electrode, and there is no extension in other parts than the upper part of the discharge electrode.

The boiling liquid and the like that drip onto the roof are blocked by the addition and fall downward from the area where the addition is missing.

For this reason, the boiling liquid dropped onto the burner is less likely to adhere to the discharge electrode.

[Effects of the Invention] In the present invention, since boiling liquid and the like are less likely to adhere to the discharge electrode, the discharge electrode is less likely to become defective.

Therefore, stable ignition operation can be obtained over a long period of time.

[Example] Next, the present invention will be explained based on embodiments shown in the drawings.

A burner body 1 shown in FIG. 1 is used as a small burner for generating a small amount of heat, and is composed of a burner body 6 and a burner cap 7.

The burner body 6 is formed integrally with a fitting cylinder part 6a and an annular body part 6b above the fitting cylinder part 6a so as to be concentric with each other. A through hole 61 is provided, and the C1 through hole is connected to the mixing pipe 8.

As shown in FIG. 2, the upper surface of the annular body 6b is an annular surface 63 that slopes downward toward the through hole 61 in the center. 63, the wide notch 62 and the notch 62a are approximately 1
They are formed at angular intervals of 80 degrees.

Fitting portions 61 a and 61 b for fitting the burner cap 7 are formed integrally with the through hole 61 .

The fitting portion 61a and the fitting portion 61b are provided at an angular interval of about 180 degrees on opposite sides of the through hole 61, and here, the inner diameter of the fitting portion 61a is larger than the inner diameter of the fitting portion 61b. It is set. Further, here, the notch 62 and the notch 62a are arranged at about 90 degrees.

On the other hand, the burner cap 7 has a relatively thick, approximately disk shape, and is composed of an annular wall portion 73 and a roof portion 7b.As shown in FIG. The central portion is formed to be raised, and the periphery of the roof portion 7b is an eaves portion 72 that protrudes from the annular wall portion 73.

At the end of the roof part 7b, there is a joining part 71 for preventing boiled water from falling.
c and 71d, and in order to allow boiled boiled water to flow down only from a predetermined location, the recessed portions 71c and 71d have a cutout portion 71a.
, 71b are formed.

On the back side of the burner cap 7, protrusions 7F and 7G formed to fit with the fitting parts 61a and 61b of the burner body 6, respectively, are provided. To ensure the mating direction when mating,
It is larger than the outer diameter of protrusion 7G.

Further, as shown in FIG. 4, on the back side of the burner cap 7, protrusions 7A are provided radially around the circumference at equal intervals, and have a comb-like shape as a whole. These protrusions 7A contact the annular surface 63 to form a burner port row 13 that opens toward the outer periphery.

Among the protrusions 7A, those corresponding to positions sandwiching the notch 62 of the annular surface 63 are elongated protrusions 7D and 7E extending radially inward.

Further, in the portion sandwiched between these long protrusions 7D and 7E, there are two protrusion teeth 74 which are recessed slightly closer to the center than other parts in correspondence with the notch 62.

Here, the elongated protrusions 7D and 7E are formed to extend so as to form a flame opening together with the protrusion teeth 74 on the penetrating six 61 side.

Similarly, the protrusions 7A corresponding to the positions sandwiching the notch 62a are long protrusions 7B and 7C formed to extend radially inward, and are sandwiched between the elongate protrusions 7B and 7C. The removed portion has three protruding teeth 75 that are recessed slightly closer to the center than the other portions.

Further, on the back surface of the burner cap 7, a drainage member 90 is provided at the outer peripheral edge facing the protruding teeth 74. Here, both sides of the lower end of the draining member 90 are made into sleeve parts 91 and 92, and a rectangular notch part 90a is formed between them.

Note that 90b is a target for the spark electrode 9, and also serves as a drain inside.

Further, in this embodiment, the burner body 6 is formed as a small burner and has no mixing chamber formed therein, but the burner cap 7 has a mixing chamber 73a inside the annular wall portion 73.
is formed, and a plurality of auxiliary flame lowers 3b are provided in the annular wall portion 73 so as to communicate the mixing chamber 73a with the outside of the annular wall portion 73.

The burner body 1 having the above configuration includes the burner cap 7
When attaching to the burner body 6, as shown in FIG.
B, 7C27D, 7E and the protruding teeth 74.75 abut against the annular surface 63.

Further, as shown in FIG. 6, the notch 62.62a becomes a concave portion with the burner cap 7 as an eaves, a spark electrode 9 is disposed in the notch 62, and a safety device described later is placed in the notch 62a. Thermocouple as a misfire detection element in 4 (
A heat sensitive element) 10 is arranged.

In addition, the mixing tube 8 is inserted into the through hole 61 of the fitting cylinder part 6a of the burner body 6, and is locked by the locking flange 8A.

The burner body 1 for a stove configured in this way has a seventh
As shown in the figure, it is incorporated into a stove 100.

In the stove 100, 2 is a gas supply system to the burner body 1, 3 is an ignition device for the burner body 1, 4 is a safety device, and 5 is a stove case in which these members are housed.

On the other hand, the upstream end 81 of the mixing tube 8 is used as an introduction section for the fuel gas and primary air, and the end face is provided with an intake port 82 for the primary air.

The gas supply system 2 includes a gas conduit 21, a valve 22, and a nozzle 23 whose tip is inserted into the mixing tube 8. The valve 22 is opened and closed by operating a knob 24, and is opened and closed by the output of a thermocouple 10. It is designed to remain open.

The ignition device 3 includes a high voltage generating means 32 consisting of a combination of a spark electric current [i9, a piezoelectric element and a striking mechanism for applying an impact to the piezoelectric element, or a combination of a dry battery and a high voltage pulse generating circuit, and It consists of a lead wire 33 for connecting. This high voltage generating means 32 is usually controlled by the knob 24.
A spark is generated in the spark electrode 9 in conjunction with the opening of the valve 22, and the burner body 1 is ignited.

The safety device 4 consists of a thermocouple 10 and an electromagnet (not shown) installed in the valve 22 so that its output keeps the valve body of the valve 22 open. When the thermocouple 10 is above the set temperature, the valve 22 is kept open, and when the temperature of the thermocouple 10 falls below the set value due to extinguishing, etc., the valve body is closed by the action of a spring (not shown). It operates in the direction.

Next, the operation of the stove 100 will be explained.

When the knob 24 is turned, the valve 22 opens, and gas is ejected from a nozzle 23 connected downstream of the valve 22.

Air is sucked in by the ejector from the primary air intake port 82 by this ejected gas flow, mixed in the mixing tube 8, and supplied into the mixing chamber 73a of the burner cap 7. The ignition device 3 is activated in conjunction with the operation of the knob 24, and a spark is generated by the spark electrode 9. This spark ignites the mixed gas ejected to the outer periphery from the flame port row 13 and the auxiliary flame lower 3b, respectively, and generates a flame, causing the cooking pot 1
2 is heated.

If there is a small amount of boiled liquid on the top surface 71 of the burner cap 7 during heating, the boiling liquid etc.
interrupted by thermocouple 10 and spark electric ffi
On the +9 side, there is a droplet 71 on the plate parts 71c and 71d.
a, drips downward from 71b.

Therefore, the spark electrode 9 and the thermocouple 10 can be protected and stable operation can be ensured over a long period of time.

In addition, in the event that there are a large number of boiled-over stars, they may get over the plate parts 71c and 71d, but since the draining member 90 is provided as described above, the boiling liquid will not reach the spark electrode 9. Hateful.

Furthermore, in this embodiment, the thermocouple 10 is provided outside the spark electrode 9 as shown in FIG. Therefore, the valve 22 is closed by the safety device 4 and combustion is stopped, so boiled boiled water will not be applied to the spark electrode 9. In the above embodiment, the shape of the notch 90a of the draining member 90 is limited to a rectangular shape. It may be formed into an appropriate geometric shape such as a triangle or a semicircle.

Further, the draining member may also be provided on the burner cap 7 on the side corresponding to the thermocouple 10, as in the case of the spark electrode 9.

In the above embodiment, the burner cap 7 includes protrusions 7F, 7G,
The burner body 6 is provided with fitting portions 61a and 61b to position and prevent rotation when the burner cap 7 is attached, but conversely, a fitting portion is provided on the burner cap and a protrusion is provided on the burner body. You can.

Further, the present invention can also be applied to a burner body formed by integrally forming a burner body and a burner cap.

In addition, various changes may be made in the specific implementation without departing from the gist of the present invention.

[Brief explanation of the drawing]

1 to 7 show one embodiment of the present invention, FIG. 1 is a perspective view of the burner body, FIG. 2 is an exploded perspective view of the burner cap, burner body, and mixing tube, and FIG. 3 is the burner cap. Fig. 4 is a back view of the burner cap, Fig. 5 is a vertical sectional view of the burner body, Fig. 6 is taken along M-M in Fig. 5.
The line sectional view, FIG. 7, is a schematic diagram of a gas stove. In the figure, l...burner body (burner for stove), 7b...
...Roof part, 9...Spark electrode (discharge electrode), 13
... Burner port row (flame port row), 71a, 71b... Missing part, 71d... Plate part, 72... Eaves part, 73a... Mixing chamber, 73b... Auxiliary burner port ( fire mouth row).

Claims (1)

[Claims] 1) It has a mixing chamber provided in the center and a row of burner ports formed on the outer periphery of the mixing chamber, and a roof portion is provided above the mixing chamber and the row of burner ports. , a burner for a stove in which a discharge electrode for ignition is arranged below the roof part, a wall part surrounding the roof part is provided at an end of the roof part, and the wall part is connected to the discharge electrode. A burner for a stove, characterized by having a missing part other than the upper part.