JPH0810045B2 - Burner for stove - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a stove burner in which an ignition electrode is arranged below a burner body, and particularly relates to prevention of ignition failure against spillage from a cooking pot. .

[Prior Art] A burner for a stove generally has an annular shape and includes a mixing chamber having a hollow central portion, and a flame port array for ejecting a mixed gas is formed outside the mixing chamber.

In this case, the mixing pipe for guiding the mixed gas to the mixing chamber is connected to the annular mixing chamber from the lower side, and the central portion of the burner body is hollow.

Further, the burner is provided with a spark discharge type ignition device, and its ignition electrode is arranged at a position close to the burner row of the burners.

[Problems to be Solved by the Invention] However, there is spillage from a cooking pot or the like on the stove, and in the conventional stove burner, the spilled broth drips onto the burner body and drops on the discharge electrode of the ignition device. Attached,
There is a risk of malfunction.

It is an object of the present invention to provide a burner for a stove, which can reduce malfunction of the discharge electrode due to spillage from a cooking pot or the like.

[Means for Solving the Problems] The present invention provides a burner body having a cutout portion in a part of an annular body portion forming a mixing chamber, and an annular body portion including the cutout portion of the burner body. A burner cap which is covered and has a large number of ridges at its abutting portion with the burner body, and which forms a flame port row opening from the mixing chamber toward the outer peripheral side together with the burner body; The burner cap is composed of a discharge electrode for ignition arranged in the lower cutout portion, and a protrusion is provided on either one of the burner body or the burner cap and a recess is provided on the other, thereby forming a positioning means. Is positioned with respect to the burner body, and a wall provided with a cutout around the upper surface of the burner cap other than a portion corresponding to the upper portion of the cutout portion provides a lower liquid drop passage. Is formed as a technical means.

[Operation] In the present invention, when there is spillage from a pan or the like on the stove, the broth or the like is dripped on the upper surface of the burner cap.

A fence is provided around the upper surface of the burner cap at least above the discharge electrode, and the fence is absent in a portion other than the upper portion of the discharge electrode.

Therefore, the broth or the like dropped on the upper surface of the burner cap is blocked by the wall portion and drops downward from the portion where the wall portion is absent.

Therefore, the broth dropped on the burner is less likely to adhere to the discharge electrode. Further, in the present invention, since the burner cap can be positioned with respect to the burner body by the positioning means that is provided in the burner cap and the burner body, respectively, the protrusions or the recesses, the position of the fence portion must be relative to the discharge electrode. It will be placed at an appropriate position.

EFFECTS OF THE INVENTION In the present invention, since the broth and the like dropped on the burner cap passes through the lower drop passage and drops below the burner body at the outer peripheral end of the burner cap, and is less likely to adhere to the discharge electrode, discharge The electrode does not easily become defective.

Therefore, a stable ignition operation can be obtained over a long period of time.
Further, in the present invention, since the orientation of the burner cap can be appropriately set by the positioning means, the orientation of the fence portion will not be erroneously fixed even after the burner cap is removed for cleaning or the like.

[Embodiment] Next, the present invention will be described based on an embodiment shown in the drawings.

The burner body 1 shown in FIG. 1 is used especially as a small burner for small heat generation, and includes a burner body 6 and a burner cap 7.

The burner body 6 includes a fitting cylinder portion 6a and an annular body portion above the fitting cylinder portion 6a.
6b is integrally formed so as to be concentric with each other, and a through hole 61 that penetrates the fitting tubular portion 6a and the annular body portion 6b is provided at the center thereof. Connected with.

As shown in FIG. 2, the upper surface of the annular body portion 6b is an annular surface 63 that is inclined downward toward the through hole 61 side of the central portion, and the annular surface 63 is provided outside the annular body portion 6b. Wide cutouts 62 and cutouts 62a are formed at an angular interval of about 180 degrees in a crossing state.

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

The fitting portion 61a and the fitting portion 61b are provided at an angular interval of about 180 degrees on the opposite side with respect to 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, it is arranged so as to form an angle of about 90 degrees with respect to the notch 62 and the notch 62a.

On the other hand, the burner cap 7 has a relatively thick, substantially disk-like shape, and includes an annular wall portion 73 and a roof portion 7b.

As shown in FIG. 3, the roof portion 7b is formed with the upper surface 71 having a slightly raised central portion, and the periphery of the roof portion 7b is an eaves portion 72 protruding from the annular wall portion 73.

At the end of the roof 7b, there is a fence 71 to prevent spills and falls.
There are c and 71d, and in order to allow the spilled substance to flow down only from a predetermined place, the wall portions 71c and 71d are provided with cutouts 71a and 71b.

A protrusion formed on the back surface side of the burner cap 7 so as to be fitted to the fitting portions 61a and 61b of the burner body 6, respectively.
7F and 7G are provided, and the outer diameter of the projection 7F is larger than the outer diameter of the projection 7G in order to ensure the fitting direction when fitting the burner body 6.

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

Among the ridges 7A, those corresponding to the positions sandwiching the notch 62 of the annular surface 63 are long ridges 7 formed to extend inward in the diameter direction.
It is D and 7E.

Further, in the portion sandwiched between these long ridges 7D and 7E, two ridge teeth 74 corresponding to the notch 62 are recessed slightly closer to the center than other portions.

Here, the long ridges 7D and 7E are formed to extend so as to form a flame port with the ridge teeth 74 on the side of the through hole 61.

Similarly, the ridge 7A corresponding to the position sandwiching the notch 62a,
The long ridges 7B and 7C are formed so as to extend inward in the diameter, and the part sandwiched between the long ridges 7B and 7C is slightly retracted toward the center from the other parts. It has three protruding teeth 75.

Further, on the back surface of the burner cap 7, a draining member 90 is provided on the outer peripheral edge portion facing the protruding teeth 74. Here, both sides of the lower end of the draining member 90 are sleeve portions 91 and 92, and a rectangular cutout portion 90a is formed between them.

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

Further, in this embodiment, the burner body 6 is formed as a small burner, and the mixing chamber is not formed in the burner body 6. However, in the burner cap 7, the mixing chamber 73a is formed inside the annular wall portion 73, and the annular wall is formed. The portion 73 is provided with a plurality of auxiliary flame ports 73b that communicate the mixing chamber 73a and the outside of the annular wall portion 73.

In the burner body 1 having the above-described structure, when the burner cap 7 is attached to the burner body 6, the protrusions 7F and 7G are fitted to the fitting portions 61a and 61b and positioned together with the detent as shown in FIG. 7A, long ridges 7B, 7C, 7D,
7E and the ribs 74, 75 abut the annular surface 63.

Further, as shown in FIG. 6, the notches 62 and 62a become recesses having the burner cap 7 as an eaves, the spark electrode 9 is arranged in the notch 62, and the safety device described later is provided in the notch 62a. A thermocouple (heat sensitive element) 10 as a misfire detecting element in 4 is arranged.

The fitting tube portion 6a of the burner body 6 has the mixing tube 8 inserted into the through hole 61 and locked by the locking flange 8A.

The burner main body 1 for a stove configured in this way is incorporated in the stove 100 as shown in FIG.

In the stove 100, 2 is a gas supply system to the burner body 1, 3 is an ignition device of the burner body 1, 4 is a safety device, and 5 is a stove case containing these members.

On the other hand, the upstream end 81 of the mixing tube 8 serves as an inlet for the gas as fuel and the primary air, and an inlet 82 for the primary air is provided on the end face.

The gas supply system 2 has 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 the thermocouple 10 outputs the output. It can be maintained in the open state.

The ignition device 3 includes a spark electrode 9, a high voltage generating means 32 including a combination of a piezoelectric element and a striking mechanism for impacting the piezoelectric element, or a combination of a dry cell and a high voltage pulse generating circuit, and a high voltage generating means 32. It consists of a lead wire 33 to be connected. The high voltage generating means 32 is normally operated by the knob 24, and a spark is generated in the spark electrode 9 in conjunction with the operation of opening the valve 22, so that the burner body 1 is ignited.

The safety device 4 comprises a thermocouple 10 and an electromagnet (not shown) provided in the valve 22 so as to maintain the valve body of the valve 22 in an open state by its output, and is heated by the flame to heat the thermocouple. Ten
Is above the set temperature, the valve 22 is kept open, and when the temperature of the thermocouple 10 drops below the set value due to fire extinguishing etc., the valve element closes due to the action of the spring (not shown). Works.

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

When the knob 24 is turned, the valve 22 opens and gas is ejected from the nozzle 23 connected downstream of the valve 22. Due to the jet flow of the gas, the air is sucked from the intake port 82 of the primary air by the action of the ejector, mixed in the mixing pipe 8 and supplied into the mixing chamber 73a of the burner cap 7. The ignition device 3 is operated in conjunction with the operation of the knob 24, and a spark is generated by the spark electrode 9. The spark ignites the mixed gas ejected to the outer periphery from the flame port array 13 and the auxiliary flame port 73b to generate a flame and heat the cooking pot 12.

When there is a small amount of spillage on the upper surface 71 of the burner cap 7 during heating, the broth or the like is blocked by the walls 71c and 71d and does not drip to the thermocouple 10 and the spark electrode 9 side. Drops are made downward from the lacking portions 71a, 71b of the wall portions 71c, 71d.

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

In addition, if the amount of spillage increases, it is possible that the spillage may get over the fences 71c, 71d. However, since the draining member 90 is provided as described above, the spark electrode 9 is spilled over soup. Hateful.

Further, in this embodiment, since the thermocouple 10 is provided outside the spark electrode 9 as shown in FIG. 6, in such a case, the spillage will occur before the spark electrode 9.
Since the safety device 4 closes the valve 22 and the combustion is stopped, the spillage will not be applied to the spark electrode 9.

In the above-described embodiment, the shape of the cutout portion 90a of the draining member 90 is not limited to the rectangular shape, but may be an appropriate geometrical shape such as a triangular shape or a semicircular shape.

Further, the draining member may 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 is provided with the protrusions 7F and 7G, and the burner body 6 is provided with the fitting portions 61a and 61b, respectively, so that the burner cap 7 is positioned and stopped when the burner cap 7 is mounted. The fitting portion and the burner body may each be provided with a protrusion.

Other specific modifications can be made without departing from the scope of the present invention.

[Brief description of drawings]

1 to 7 show an embodiment of the present invention, FIG. 1 is a perspective view of a burner body, FIG. 2 is an exploded perspective view of a burner cap, a burner body and a mixing tube, and FIG. 3 is a burner cap. 4 is a side view of the burner cap, FIG. 4 is a rear view of the burner cap, FIG. 5 is a longitudinal sectional view of the burner body, and FIG. 6 is MM of FIG.
The line sectional view and FIG. 7 are schematic views of the gas stove. In the figure, 1 ... Burner main body (stove burner), 7b ... Roof part, 9 ... Spark electrode (discharge electrode), 13 ... Flame port row (flame port row), 6 ... Burner body, 6b ... Annular body section, 61a, 61b ... Fitting portion (recessed portion), 62 ... Notch (notched portion), 7 ... Burner cap, 7A to 7E ... Projections (many projections), 7F, 7G ... Projectors,
71a, 71b ... Missing part, 71c, 71d ... Fence part, 73a ... Mixing chamber, 73b
... Auxiliary flame mouth (flame row).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 60-122657 (JP, U) Shokoku 62-18814 (JP, Y2)

Claims (1)

[Claims] 1. A burner body in which a part of an annular body portion forming a mixing chamber is cut out, and a burner body covered by the annular body portion including the cutout portion of the burner body. A burner cap that has a large number of protrusions at the abutting portion and forms a flame port array that opens toward the outer peripheral side from the mixing chamber together with the burner body, and is arranged in the cutout portion below the burner cap. And a discharge electrode for ignition, and one of the burner body or the burner cap is provided with a protrusion and the other is provided with a recess to serve as positioning means, thereby positioning the burner cap with respect to the burner body. At the same time, the liquid droplet lower passage is formed around the upper surface of the burner cap by a fence portion having a cutout portion other than a portion corresponding to above the cutout portion. Nroyo burner.