JPH0432285B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement of a burner, and particularly to a burner for a stove that is improved by providing an umbrella member on the burner body via a spacer.

[Prior Art] A table stove burner has an internal mixing chamber for combustion gas and primary air, and a row of flame holes through which a mixed gas of air and fuel gas is discharged to the outside.

During cooking, the mixed gas discharged from the flame hole array is ignited by the ignition operation to form a flame and heat the cooking pot.

[Problems to be Solved by the Invention] During such cooking, the food to be cooked boils as the cooking pot heats up, and boiling spills fall outside the cooking pot and land on the flame holes, causing clogging of the flame holes, etc. There is a possibility that this may occur.

[Object of the Invention] The present invention was made in consideration of the above circumstances, and its purpose is to avoid boiling over to the flame hole, prevent clogging of the flame hole, and to effectively lift the flame. To provide a burner for a stove that exhibits excellent effects such as suppressing combustion and ensuring good combustion performance.

[Means for Solving the Problems] The present invention provides an annular space on the outer periphery of a horizontally arranged annular head whose inner side serves as a secondary air supply section as a mixing chamber for primary air and combustion gas. A ring type, in which a row of peripheral flame holes is formed diagonally upward on the upper outer periphery of the annular head for discharging the mixed gas from the mixing chamber to the outside, and a recess is provided in a part of the row of peripheral flame holes. a burner body, a heat-sensitive element accommodated in the recess, and a flange-like eaves portion having a slightly larger diameter than the burner body and protruding toward the burner body on the outer peripheral edge of the back surface. A burner for a stove, comprising: a plate-shaped umbrella member placed via a spacer so as to cover the burner main body, and whose inner side communicates with a secondary air supply section,
The inner peripheral side of the eaves part is provided with a tapered part that goes downward toward the outside, and the lower end of the eaves part, which is in an edge shape, is located outside and below the outer peripheral flame hole row of the burner body. What is set is the structure.

[Operations and Effects of the Invention] Secondary air taken in from the lower center of the burner body passes between the lower surface of the umbrella member and the upper surface of the burner body, is guided by the tapered portion of the eaves, and escapes downward to the outside. This downward flow of secondary air does not cause any lift in the flame in the burner port row, so that good combustion can be ensured and the heat-sensitive element can also function normally.

Even if spilled boiled water overflows from the cooking pot, it is caught on the umbrella member, drained at the eaves, and quickly finishes dripping, and does not fall into the row of flame holes.

[Example] The present invention will be described below based on an example shown in the drawings.

First, in FIG. 1, the burner 1 is the burner main body of the present invention, and consists of a burner body 6 and a burner cap 7. The burner body 6 has a central fitting cylinder part 6.
a and the outer annular body part 6b are formed to be concentric with each other, and a mixing chamber 6A is defined between the fitting cylinder part 6a and the annular body part 6b. The burner body 6 has an open upper surface, and the upper edge of the opening is an annular surface 63 that slopes downward toward the center.
A notched recess 62 and a recess 62a are formed adjacent to each other at an angular interval of approximately 60 degrees across the annular surface 63. A flat retracting annular surface 63a slightly protrudes into the mixing chamber 6A from each inner end of the recess 62 and the recess 62a.
A retracting annular surface 63b is formed to be continuous with the annular surface 63. Further, the annular body 6b of the burner body 6 connects an L-shaped duct 6B communicating with the mixing chamber 6A at a portion diametrically opposed to the recess 62.

On the other hand, the burner cap 7 has a dish-like shape, and has a mounting cylinder part 7 in the center that fits into the fitting cylinder part 6a of the burner body 6 and whose inside serves as a secondary air supply part.
An annular head 70 consisting of two parts is formed. Also,
There is a recess 6 on the outer peripheral edge of the back side of the burner cap 7.
A large number of protrusions 7A are radially provided at equal intervals except for the portions corresponding to the concave portions 2 and 62a, and the entire protrusion 7A has a comb-like shape. Then, as the mounting cylinder part 72 is fitted to the fitting cylinder part 6a, these protrusions 7
A is in contact with the annular surface 63 to form a flame hole array 13 that opens toward the outer periphery.

Now, in the portion of the burner cap 7 corresponding to the recess 62, protrusion teeth 74a, 75a, and 76a are formed along the radial direction, retracted slightly closer to the center than the protrusion 7A, and these protrusion teeth are The front part is a recessed part 7a, and these protruding teeth 74a, 75a,
Long teeth 7B and 7C are provided that sandwich 76a on both sides. Further, in a portion corresponding to the recess 62a, a protrusion tooth 7 is provided which is retracted slightly closer to the center than the protrusion 7A.
4 is formed along the radial direction, and the front of the protruding tooth 74 is a recess 7b, and long teeth 7D, 7E are provided that sandwich the protruding tooth 74 on both sides.

Furthermore, the burner cap 7 has protruding teeth 74.
A protrusion 7X is formed at a position substantially diametrically corresponding to the a, 75a, and 76a, and the protrusion 7X is formed in a notch 6 provided in the fitting cylinder portion 6a of the burner body 6.
It is compatible with X.

As the burner cap 7 is attached to the burner body 6, the protrusions 7X fit into the notches 6X to prevent rotation and position the protrusions 74a, 75a, 76a and the protrusions 74 as shown in FIG. As shown, they abut on the retracting annular surface 63a and the retracting annular surface 63b, respectively. At the same time, the recess 7a of the burner cap 7 matches the recess 62 of the burner body 6, and the recess 7b matches the recess 62a. A thermocouple (heat-sensitive element) 10 in the safety device 4, which will be described later, is housed in these recesses 7a and 62, and a spark electrode 9 of an ignition device is housed in the recesses 7b and 62a.

90 is an umbrella member whose upper surface has a gentle spherical shape,
This is formed to have a slightly larger diameter than the burner cap 7, and a flange-like eaves portion 93 is integrally formed on the outer peripheral edge. The eaves portion 93 has a stepped portion 93b at its boundary with the umbrella member 90 on the inner peripheral surface side, and a tapered portion 93a that slopes downward toward the outside from the stepped portion 93b. Further, the lower end 93c of the eaves portion 93 is an umbrella member 90 with an acute edge.
The studs 91 are fitted via stepped portions 93b to three studs 91 which are set up as spacers at equal angular intervals on the outer peripheral edge of the burner cap 7, and are mounted in a positioned state.

In this state, the outer peripheral edge of the umbrella member 90 has an eaves part 93 that protrudes outward by about 3 mm from the outer peripheral edge of the burner cap 7, and slightly protrudes toward the burner cap 7 side, so that the tapered part 93a is connected to the outer peripheral edge of the burner cap 7. It is facing with a slight gap between the two.

The burner 1 configured in this manner is incorporated into the stove 100 of the present invention, as shown in FIG. In this stove 100, 2 is the burner 1
3 is an ignition device for the burner 1, 4 is a safety device, and 5 is a stove case in which these members are housed.

On the other hand, the mixing tube 8 is connected to the duct 6B, and an upstream end 81 serves as an introduction section for the fuel gas and primary air, and an intake port 82 for the primary air is provided on the end surface.

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 the thermocouple 10 The open state can be maintained by the output.

The ignition device 3 includes a spark electrode 9, a high voltage generating means 32 consisting of a combination of 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; It consists of a lead wire 33 to be connected. This 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 opening of the valve 22, thereby igniting the burner 1.

The safety device 4 consists of a thermocouple 10 and an electromagnet (not shown) provided in the valve 22 so as to maintain the valve pair of the valve 22 in an open state by the output of the thermocouple 10, and is heated by the generated flame. When the temperature of the thermocouple 10 is higher than 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., a spring (not shown) is opened.
The valve body operates in the valve closing direction due to the action of the valve body.

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. Due to this jet flow of gas, air is sucked in from the primary air intake port 82 by the action of the ejector, mixed in the mixing pipe 8, and then transferred to the burner body 6.
is supplied into the mixing chamber 6A. The ignition device 3 is activated in conjunction with the operation of the knob 24, and the spark electrode 9 generates a spark. This spark ignites the mixed gas of air and fuel gas ejected from the flame hole array 13 to the outer periphery to generate a flame and heat the cooking pot 12. At this time, the secondary air passes from the inside of the annular head 70 between the inner surface of the umbrella member 90 and the upper surface of the burner cap 7 and is discharged to the outside as shown by the arrow in FIG. Air is compensated.

In the above configuration, since the protective plate 90 is provided on the upper part of the burner cap 7, even if boiled water spills out from the cooking pot 12, it will be caught on the umbrella member 90, so that the mounting cylinder through which secondary air passes. There is no chance of spilled liquid falling on the inner circumferential surface of the 72.

At this time, since the eaves part 93 is formed on the umbrella member 90, boiled boiled water and the like flowing downward on the umbrella member 90 is drained by the eaves part 93 when it reaches the outer peripheral edge. For this reason, the dripping state of boiled boiled water does not continue indefinitely, and the boiled boiled water quickly falls. Furthermore, since the umbrella member 90 is attached to and detachable from the burner cap 7, the umbrella member 90 that has been soiled by boiling over can be easily removed and washed with tap water or the like.

Furthermore, as described above, the secondary air flows from the inside of the annular head 70 through between the upper surface of the burner cap 7 and the lower surface of the umbrella member 90 as shown by the arrow in FIG.
It passes through to the upper part while being guided by the taper part 93a of No. 3. Due to this secondary air flow, the flame hole row 13
Lifting of the flame from the flame is effectively suppressed, the flame condition is stabilized, and good combustibility can be ensured.

As the flame lift is eliminated and the flame stabilizes, the heating condition for the thermocouple 10 improves, and when the thermocouple 10 is installed, it will not malfunction and the expected normal function will be maintained. You can also get a nice effect.

In the above embodiment, the recesses 62a and 7b were provided and the spark electrode 9 was accommodated in the recesses 62a and 7b, but the recesses 62a and 7b were omitted and the mixed gas from the flame hole array 13 was directly ignited by the ignition burner. It may be configured to be a fire type. Moreover, the recessed portion 7a,
Although the upper part of 7b is formed into a notch shape, the notch may be omitted and the portions surrounded by the tips of the protruding teeth 74a, 75a, 76a and the protruding tooth 74 may be made into recessed portions. .

Further, in the above embodiment, the eaves portion 93 is integrally formed with the umbrella member 90, but the eaves portion may be a separate member.

In addition, in the above embodiment, the umbrella member 90 is formed to have a larger diameter than the burner cap 7, and protrudes outward by about 3 mm, but the amount of protrusion is not limited to this, and can be set to an appropriate dimension. Of course, you can do it.

Further, in the above embodiment, the stud 91 was provided as a spacer, but as shown in FIG.
Instead of the pin 95, a pin 95 may be provided on the umbrella member side, and a groove (not shown) into which the pin 95 fits may be provided on the burner body 7 side. Furthermore, the burner cap 7 and the burner body 6 may be formed integrally, and this may be used as the burner main body.

In addition, only one of the spark electrode 9 and the thermocouple 10 may be accommodated in the recess.

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

[Brief explanation of drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is an exploded perspective view of a burner cap and burner body, FIG. 2 is a schematic diagram of a stove, and FIG. 3 is an enlarged sectional view of the main parts. 4 is a vertical sectional view of the recess shown together with the thermocouple, FIG. 5 is an assembly view of the burner, and FIG. 6 is a perspective view of another embodiment of the present invention. In the figure, 1... Burner (burner body), 6... Burner body, 7... Burner cap, 9... Spark electrode, 10... Thermocouple (heat sensitive element), 13...
...flame hole row, 62, 62a... recess, 7a, 7b...
... recess, 92... stud (spacer).

Claims (1)

[Claims] 1. An annular space on the outer periphery of a horizontally arranged annular head whose inner side serves as a secondary air supply section is used as a mixing chamber for primary air and combustion gas; a ring-type burner body having a peripheral flame hole array formed diagonally upward on the upper outer periphery for discharging the mixed gas from the mixing chamber to the outside, and a recessed portion provided in a part of the peripheral flame hole array; a heat-sensitive element housed in the burner body;
A plate provided with a flange-shaped eave portion protruding toward the burner body on the outer peripheral edge of the back surface, placed via a spacer so as to cover the burner body, and having an inner side communicating with a secondary air supply unit. A burner for a stove, comprising: an umbrella member having a shape; and an inner circumferential side of the eaves part is provided with a tapered part that descends toward the outside, and an edge-like part of the eaves part. A burner for a stove, characterized in that a lower end is set outside and below a row of peripheral flame holes of the burner body.