JP2001050513A - Gas burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an excellent gas burner capable of further improving heating efficiency and further increasing combustion reating power. SOLUTION: There is provided a gas burner in which there is provided a gas burner body including a side wall 8 for restricting part of an internal space 12 and a top wall 6 for covering the upper surface of the internal space 12, and in which mixed gas is supplied into the internal space 12 through a mixing tube 18, A plurality of first burner ports 14 are provided in the side wall 8 of the burner body for injecting the mixed gas fed into the internal; space to the outside. These first burner ports 14 extend inclined upward and directed to the outside from the internal space 12 with their horizontal width formed larger than a vertical width. Further, there are provided a plurality of second burner ports 16 for injecting the mixed gas fed into the internal space 12 to the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a gas burner for burning a mixed gas.

[0002]

2. Description of the Related Art The present applicant has filed Japanese Patent Application No. Hei 10-246893.
And Japanese Patent Application No. 10-246894 proposed an improved gas burner. In the proposed gas burner, the burner body defining the internal space has a substantially vertically extending side wall, and a plurality of flame holes are formed in the side wall at circumferential intervals. From the outside to the outside.

[0003] In this improved gas burner, since the flame holes are provided on the substantially vertical side wall, a mixed gas from the internal space, for example, a mixed gas of primary gas mixed with city gas, LP gas or the like, is provided in plural numbers. The fuel gas is ejected obliquely upward through the individual flame holes, and the combustion gas from the flame holes is directed upward along the surface of the side wall (the so-called Coanda effect), thereby increasing the heating efficiency despite the provision of the flame holes in the side wall. be able to.

[0004]

In such an improved gas burner, the heating efficiency can be increased as described above. However, a further improvement in the heating effect is desired. It is also desired to further strengthen.

It is an object of the present invention to provide an excellent gas burner which can further increase the heating efficiency and further increase the combustion thermal power.

[0006]

SUMMARY OF THE INVENTION The present invention comprises a burner body having a substantially vertical side wall defining a portion of an interior space, and a top wall covering an upper surface of the interior space.

A mixing pipe connected to the burner main body and configured to supply a mixed gas to the internal space.

The side wall of the burner main body is provided with a plurality of first flame holes for ejecting the mixed gas supplied to the internal space to the outside, and the plurality of first flame holes are provided with the first flame holes. It extends upward from the internal space toward the outside, their horizontal width is formed larger than their vertical width,

Further, the top wall of the burner main body is provided with a plurality of second flame holes for ejecting the mixed gas supplied to the internal space to the outside.

According to the present invention, a plurality of first flame holes are formed in the side wall of the burner main body, and these first flame holes extend upward from the internal space toward the outside, so that the internal space is increased. From the first flame hole is directed upward along the side wall, and the combustion gas can be directed upward by the Coanda effect, thereby increasing the heating efficiency. it can. Further, since the width of the plurality of first flame holes in the horizontal direction is larger than the width in the vertical direction, a flame having a small width in the direction perpendicular to the side wall is generated widely in the horizontal direction. Efficiency can be increased. Further, since the top wall of the burner main body is provided with a plurality of second flame holes, the burner gas is also heated by the combustion gas from the second flame holes, and the combustion gas acts upward. The heating efficiency can be further enhanced by the appropriate combustion gas, and the thermal power of the combustion gas can be increased.

Further, in the present invention, the plurality of second flame holes are formed in a circular shape.

According to the present invention, since the second flame hole is circular, the flame is generated in a circular shape upward from the second flame hole.

Further, in the present invention, the plurality of first flame holes are composed of a plurality of main flame holes for heating and combustion, and a plurality of small flame holes for insulated combustion. A first internal space communicating with the plurality of main flame holes and a second internal space communicating with the plurality of small flame holes, wherein the plurality of second flame holes communicate with the first internal space; It is characterized by doing.

According to the present invention, the plurality of first flame holes are composed of a main flame hole for heating combustion and a small flame hole for warm combustion.
By jetting the mixed gas from the main flame hole for heating and combustion through the first internal space, a large combustion flame is generated, and the cooking pot can be heated and cooked with strong heat. In addition, a small combustion flame is generated by ejecting the mixed gas from the small flame hole for keeping heat through the second internal space,
Cooking pot can be cooked with low heat.
Further, since the second flame port communicates with the first internal space, the mixed gas is also blown out from the second flame hole when the cooking pot is heated and cooked with strong heat, and the combustion from the second flame hole is performed. Even gas can be used for heating and the burner's heating power can be further increased.

Further, in the present invention, the internal space includes a first internal space communicating with the first flame hole and a second internal space communicating with the second flame hole, and has a relatively low heating power. Sometimes, the mixed gas is supplied to the first internal space, heated by the combustion gas from the first flame hole, and when the thermal power is relatively increased, the mixed gas is supplied to the first and second internal spaces, The heating is performed by the combustion gas from the first and second flame holes.

According to the present invention, when the heating power is relatively weakened, the mixed gas is ejected from the first flame through the first internal space, and the combustion gas is generated from the first flame.
When the thermal power is relatively increased, combustion gas is generated from the first and second flame holes through the first and second internal spaces, and when the thermal power is increased, the combustion gas is also generated from the second flame hole. Can be made stronger.

Further, in the present invention, the burner main body is annular and has an outer peripheral side wall and an inner peripheral side wall extending substantially vertically, and upper ends of the outer peripheral side wall and the inner peripheral side wall are connected by the top wall. The top wall has a substantially inverted conical shape inclined downward from the outer peripheral side wall toward the inner peripheral side wall, and the plurality of first flame holes are provided at an upper end portion of the outer peripheral side wall;
The plurality of second flame holes are provided in the top wall.

According to the present invention, the top wall of the burner main body has a substantially inverted conical shape, and a plurality of second flame holes are provided in the top wall. The gas is generated obliquely upward toward the center of the main body, so that the combustion gas from the second flame hole can be made to act, for example, near the center of the bottom surface of the cooking pan, and particularly, the heating of the combustion gas from the second flame hole Efficiency can be further improved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a gas burner according to the present invention will be described with reference to the accompanying drawings.

First Embodiment

1 to 3 show a first embodiment of a gas burner according to the present invention. FIG. 1 is a front view of the gas burner of the first embodiment, and FIG. 2 is a plan view of the gas burner of FIG. FIG. 3 is a sectional view taken along line III-III in FIG.

1 to 3, the illustrated gas burner includes an annular burner main body 2, which is provided with an annular bottom wall 4 and a top wall 6 and a bottom wall 4 and a top wall 6 formed by the bottom wall 4 and the top wall 6. It has an outer peripheral wall 8 connecting the outer peripheral parts, and an inner peripheral side wall 10 connecting the inner peripheral parts thereof, and has a bottom wall 4, a top wall 6, and an outer peripheral side wall 8.
In addition, the inner peripheral side wall 10 has an annular internal space 1 to which a mixed gas (a mixture of fuel gas such as city gas and LP gas and primary air mixed with primary air is referred to as a mixed gas) is supplied.
2 is specified. The outer peripheral side wall 8 and the inner peripheral side wall 10 are
From the outer peripheral side wall 8 in this configuration.
A plurality of first flame holes 14 are provided at the upper end of the upper wall, a plurality of second flame holes 16 are provided on the top wall 6, and the first flame holes 14 are provided on the substantially vertical outer peripheral side wall 8. In addition, it is possible to reduce the flow of the broth or the like into the first flame hole 14 due to its structure. The first and second flame holes 14, 16 and the configuration related thereto will be described later. Outer peripheral wall 8 of burner body 2
A mixing pipe 18 is connected to a lower part of the pipe. One end opening (not shown) of the mixing pipe 18 is located to face the fuel nozzle 20, and the other end opening 22 (FIG. 2) opens into the internal space 12 of the burner main body 2.

Because of the above configuration, city gas, LP
A fuel gas such as a gas is supplied from a fuel nozzle 20 to a mixing pipe 18.
The surrounding air is blown toward the one end opening of the mixing pipe 18 by the fuel gas flowing through the mixing pipe 18 through the one end opening.
And a mixed gas in which primary air is mixed with the fuel gas is supplied into the internal space 12 of the burner main body 2 through the mixing pipe 18. The mixed gas thus sent is supplied to the internal space 1.
2 is ejected to the outside through the first and second flame holes 14 and 16.

Next, referring mainly to FIGS. 1 and 2,
Describing the first flame hole 14 and the configuration related thereto, the first flame holes 14 have substantially the same structure, and are substantially the same from the inner opening 14a opening to the internal space 12 to the outer opening 14b opening to the outside. The section is formed in a rectangular shape in this embodiment. As shown in FIG. 1, each first flame hole 14 has a horizontal width W greater than a vertical width H, a horizontal width W of, for example, 3 to 8 mm, and a vertical width H. Is formed to have a width W in the horizontal direction (circumferential direction) of, for example, 3 to 10 times (3H ≦ W ≦ 10H) the width H in the vertical direction. By forming the first flame hole 14 into a rectangular shape elongated in the horizontal direction as described above, the mixed gas is ejected through the first flame hole 14 in a narrow vertical direction and widely in the horizontal direction. The combustion gas from 14 is generated such that the radial width of the outer peripheral side wall 8 is narrow and the horizontal (circumferential) width is wide, and sufficient secondary air is supplied to the combustion gas.

As shown in FIG. 3, the first flame hole 14 also extends from the internal space 12 to the outside, that is, the inner opening 14.
a, it extends obliquely upward toward the outer opening 14b, and in this embodiment, extends linearly. The inclination angle of the first flame hole 14 is set to, for example, 40 to 70 degrees. By inclining the first flame hole 14 in this manner, the combustion gas is generated obliquely upward from the first flame hole 14, and the generated combustion gas is generated along the surface of the outer peripheral side wall 8 of the burner main body 2 by the Coanda effect. Turn upward. Therefore, the combustion gas is directed to, for example, the center of the cooking pot to be heated, thereby increasing the heating efficiency.

In the first embodiment, as shown in FIG. 1, the first flame holes 14 are provided in two stages at an interval in the vertical direction, and the plurality of first flame holes 14 in the upper stage and the lower flame holes 14 in the lower stage are provided. The plurality of second flame holes 14 have substantially the same pitch interval in the circumferential direction, but their pitches are shifted from each other by a half pitch in the circumferential direction. By shifting by a half pitch in this way, not only the lower first flame hole 14 but also the upper first flame hole 14
Also, sufficient secondary air is supplied along the surface of the outer peripheral side wall 8, and the combustion gas from the first flame hole 14 can be completely burned. In this embodiment, the first flame hole 14 is
Although provided in stages, one stage or three or more stages may be provided.

Referring to FIGS. 2 and 3, the second flame hole 16 and the structure related thereto will be described. Each second flame hole 16 has substantially the same structure. It has substantially the same cross-sectional shape up to the other end that opens to the outside, and in this embodiment, is formed in a circular shape. In the illustrated gas burner, the top wall 6 is flat and extends substantially in the horizontal direction, and each of four regions A to D (regions at 90-degree intervals) substantially equally spaced in the circumferential direction of the top wall 6. Are provided with a plurality (three in this embodiment) of second flame holes 16. Each second flame hole 16 has a diameter of, for example, 1.5 to 2.5 mm.
And extends outward from the internal space 12 substantially vertically upward. Since the gas mixture is formed in this manner, the mixed gas is ejected upward in a circular shape through the second flame hole 16, so that the combustion gas from the second flame hole 16 is generated upward in a substantially circular shape, and the first flame hole 14 is formed. On the bottom side of the cooking pot, for example, on the radially inner side of the combustion gas from the pan. Secondary air is supplied to the combustion gas of the second flame hole 16 through the central flow path 24 (the inner space defined by the inner peripheral side wall 10) of the burner main body 2. In the present embodiment, the second flame holes 16 are provided in four regions of the top wall 6, but the second flame holes 16 may be provided in two, three, or five or more regions. Also, the number of the second flame holes 16 provided in each region can be appropriately set.

In the above-described gas burner, since the first flame hole 14 is provided on the outer peripheral side wall 8 and the second flame hole 16 is provided on the top wall 6, the mixed gas in the internal space 12 is the first gas hole. Then, the fuel gas is ejected to the outside through the second flame holes 14 and 16, and the combustion gas from the first and second flame holes 14 and 16 acts on, for example, the bottom surface of the cooking pot. Therefore, the burning power of the burner can be increased, and the combustion gas from the second flame hole 16 acts on the cooking pot radially inside the combustion gas from the first flame hole 14, thereby increasing the heating efficiency. Can be further enhanced.

Second Embodiment

Next, a second embodiment of the gas burner according to the present invention will be described. FIG. 4 is a cross-sectional view illustrating a gas burner according to the second embodiment. In the second embodiment, the top wall of the burner main body is modified.

Referring to FIG. 4, the gas burner of the second embodiment includes an annular burner body 102, which is similar to the first embodiment, and has an annular bottom wall 104.
And a top wall 106, an outer peripheral wall 108 connecting the outer peripheral portions of the bottom wall 104 and the top wall 106, and an inner peripheral side wall 110 connecting the inner peripheral portions thereof. The outer peripheral side wall 108 and the inner peripheral side wall 110 define an internal space 112 to which the mixed gas is supplied. Outer side wall 1
08 and the inner peripheral side wall 110 extend substantially vertically upward from the bottom wall 104, a plurality of first flame holes 114 are provided at an upper end portion of the outer peripheral side wall 108, and a plurality of second flame holes 114 are provided on the top wall 106.
A flame hole 116 is provided.

In the second embodiment, the top wall 106 that covers the upper surface of the internal space 112 extends downward from the outer peripheral end connected to the outer peripheral side wall 108 to the inner peripheral end connected to the inner peripheral side wall 110. It extends obliquely in a straight line and is formed in a substantially inverted conical shape. In this connection, each of the second flame holes 116 is formed substantially perpendicular to the inclined top wall 106, and extends linearly inward in the radial direction toward the upper side. . Another configuration of the second embodiment is shown in FIG.
3 is substantially the same as the first embodiment shown in FIG.

The basic configuration of this gas burner is substantially the same as that of the first embodiment, so that the same operation and effect as those of the first embodiment are achieved. In addition, the top wall 106 is formed in a substantially inverted conical shape.
Since the flame hole 116 is formed, the mixed gas in the internal space 112 is ejected upward in the radial direction through the second flame hole 116. Therefore, as shown in FIG. 4, the combustion gas from the second flame hole 116 is concentrated above the central portion of the burner body 102 inside the combustion gas from the first flame hole 14, and The efficiency of heating the combustion gas from the flame holes 116 can be further increased. In addition, with such a configuration, the central flow path 118 of the burner main body 102 is formed.
Is easily supplied by the combustion gas from the second flame hole 116, and sufficient secondary air can be supplied to the combustion gas.

Third Embodiment

Next, a third embodiment of the gas burner according to the present invention will be described with reference to FIG. FIG.
It is sectional drawing which shows the gas burner of 3rd Embodiment, In this 3rd Embodiment, the 1st flame hole is comprised from the main flame hole for heat combustion, and the small flame hole for warm combustion.

In FIG. 5, the gas burner of the third embodiment has an annular burner main body 202,
02 has an annular bottom wall 204 and a top wall 206, and an outer side wall 208 and an inner side wall 210 that connect the outer periphery and the inner periphery of the bottom wall 204 and the top wall 206.
04, top wall 206, inner peripheral side wall 208, and outer peripheral side wall 210
Defines an annular first interior space 212. An annular partition wall 214 is provided in a part of the first internal space 212, and a part of the outer peripheral side wall 208 and the partition wall 214 are connected to the first internal space 21.
4 to define an annular second internal space 216 independent of the second internal space 216.
The outer peripheral side wall 208 and the inner peripheral side wall 210 extend substantially vertically upward from the bottom wall 204, and the outer peripheral side wall 208 has a first flame hole, that is, a main flame hole 218 for heating combustion and a small flame hole 220 for warm combustion.
Are provided, and the second flame hole 22 is
2 are provided.

A plurality of main flame holes 218 are provided at the upper end of the outer peripheral side wall 208 of the burner main body 202 at intervals in the circumferential direction, and these main flame holes 218 are obliquely upward from the first internal space 212 toward the outside. Extends in a slanting direction (horizontal direction)
It is formed in an elongated rectangular shape. The main flame hole 218 is
It is configured substantially the same as the first flame hole 14 of the first embodiment. A plurality of small flame holes 220 are provided in the outer peripheral side wall 208 below the plurality of main flame holes 218 at intervals in the circumferential direction. These small flame holes 220 extend from the second internal space 216 to the outside. It extends obliquely upward toward it. The small flame hole 220 is smaller than the main flame hole 218 and the small flame hole 22
The width of the main flame hole 218 in the horizontal direction (circumferential direction) is substantially equal to the width of the main flame hole 218 in the horizontal direction (circumferential direction), but the width in the vertical direction is smaller than the width of the main flame hole 218 in the vertical direction. The width of the main flame hole 218 in the vertical direction is, for example, 0.6 to 0.8 times, in other words, for example, 0.6 to 1.0 mm. As described above, the opening cross-sectional area of the main flame hole 218 is large, and the amount of mixed gas spouted through the main flame hole 218 is increased. Therefore, the combustion gas from the main flame hole 218 has a high thermal power, and Used for On the other hand, the opening cross-sectional area of the small flame hole 220 is small, and the ejection of the mixed gas ejected through the small flame hole 220 is small. Therefore, the combustion gas from the small flame hole 220 is weak in thermal power and is used for heat retention heating Can be In this embodiment, the main flame hole 218 is provided in two stages at an interval in the vertical direction, and the small flame hole 220 is provided in one stage. The inclination angle α of the main flame hole 218 and the small flame hole 220 is the first angle. As in the case of the first flame hole 14 of the embodiment, it is set to, for example, 40 to 70 degrees.

A first mixing pipe 224 and a second mixing pipe 226 are connected to an outer peripheral side wall 208 of the burner main body 202. The first mixing pipe 224 is communicated with the first internal space 212, and the fuel gas ejected from the first fuel nozzle 228 is mixed with the primary air and supplied to the first internal space 212 through the first mixing pipe 224. . Further, the second mixing pipe 226 communicates with the second internal space 216 and the second fuel nozzle 230
The fuel gas ejected from the tank is mixed with primary air
The water is supplied to the second internal space 216 through the mixing pipe 226.

The top wall 206 of the burner main body 202 is formed in a substantially inverted conical shape similarly to the top wall 106 of the second embodiment shown in FIG. 4, and the inclined top wall 206 is formed in the same manner as described above. A second flame hole 222 is formed. The second
The flame hole 222 communicates with the first internal space 212.

In this gas burner, a fuel gas is supplied from the second fuel nozzle 230 when heating and heating. The fuel gas supplied in this way is combined with primary air in the second
It is fed to the second internal space 216 through the mixing pipe 226,
The mixed gas in the second internal space 216 is the small flame hole 2 of the first flame hole.
The cooking pot and the like can be heated and heated by the combustion gas from the small flame hole 220 by being ejected to the outside through 20. In addition, during normal or intense heating, fuel gas is supplied from the first and second fuel nozzles 228 and 230.
The fuel gas from the first fuel nozzle 228 is supplied to the first internal space 212 through the first mixing pipe 224 together with the primary air, and the fuel gas from the second fuel nozzle 230 is supplied to the first 2 to the internal space 216. The mixed gas in the first internal space 212 is ejected outward obliquely upward through the main flame hole 218 toward the outside in the radial direction, and obliquely upward outward toward the inside in the radial direction through the second flame hole 222. And these main flame holes 218
And the combustion gas from the second flame hole 222 contribute to the heating, and can be heated with a strong thermal power. In particular, the combustion gas from the second flame hole 222 extends obliquely upward inward in the radial direction, and the front end of the flame is concentrated at the center of the burner main body 202, so that the heating efficiency by the combustion gas is reduced. Can be further enhanced. At this time, the mixed gas in the second internal space 216 is ejected from the second flame hole 222 as described above, and is also heated by the combustion gas from the second flame hole 222.

In the third embodiment, the top wall 206 of the burner main body 202 has a substantially inverted conical shape. However, instead of this, for example, like the top wall 6 of the first embodiment, the top wall 206 is flattened. You may make it expand substantially horizontally.

In the third embodiment, a plurality of small flame holes 220 are provided below a plurality of main flame holes 218. On the contrary, a plurality of main flame holes 218 are formed. A plurality of small flame holes 220 may be provided on the upper side.

Fourth Embodiment

Next, a fourth embodiment of the gas burner according to the present invention will be described with reference to FIGS. FIG.
It is sectional drawing which shows the gas burner of 4th Embodiment, FIG.
FIG. 4 is a cross-sectional view showing a control valve for controlling the supply of fuel gas to the gas burner and the movement thereof. In the fourth embodiment, the supply of fuel gas to a first flame hole and a second flame hole is illustrated. Is performed in another system.

In FIG. 6, the gas burner of the fourth embodiment has an annular burner main body 302,
02 has an annular bottom wall 304 and a top wall 306, and an outer side wall 308 and an inner side wall 310 that connect the outer circumference and the inner circumference of the bottom wall 304 and the top wall 306.
04, top wall 306, inner peripheral side wall 308, and outer peripheral side wall 310
Defines an annular interior space. An annular partition wall 312 is provided in this internal space, and a part of the outer peripheral side wall 308, a part of the top wall 306, and the partition wall 312 define an annular first internal space 314 at the upper part of the internal space. , Inner peripheral side wall 31
0, the bottom wall 304, the remaining portion of the outer peripheral side wall 308, the remaining portion of the top wall 306, and the partition wall 312 define an annular second internal space 216 independent of the first internal space 314 in the remaining portion of the internal space. I do. Outer side wall 308 and inner side wall 31
0 extends substantially vertically upward from the bottom wall 304 and
08 are provided with a plurality of first flame holes 318.
The flame hole 318 is open to the first internal space 314. Further, a plurality of second flame holes 320 are provided in the top wall 306, and these second flame holes 320 are open to the second internal space 320.

The plurality of first flame holes 318 are provided in the burner body 30.
The first flame holes 318 extend obliquely upward from the first internal space 314 toward the outside and extend in the horizontal direction (circumferential direction). It is formed in an elongated rectangular shape. The first flame holes 318 have substantially the same configuration as the first flame holes 14 of the first embodiment. In this embodiment, the first flame holes 318 are provided in one step. However, as in the first embodiment, two or three or more steps may be provided at intervals in the vertical direction. The angle of inclination of each flame hole 318 is set to, for example, 40 to 70 degrees, similarly to the first flame hole 14 of the first embodiment.

In this embodiment, the top wall 3 of the burner body 302
Reference numeral 06 denotes a substantially inverted conical shape substantially similar to the top wall 106 of the second embodiment shown in FIG.
6, a second flame hole 320 is formed in the same manner as described above.

A first mixing pipe 324 and a second mixing pipe 326 are connected to an outer peripheral side wall 308 of the burner main body 302. The first mixing pipe 324 is communicated with the first internal space 314, and the fuel gas ejected from the first fuel nozzle 328 is mixed with the primary air and supplied to the first internal space 314 through the first mixing pipe 324. . In addition, the second mixing pipe 326 is communicated with the second internal space 316 and the second fuel nozzle 330
The fuel gas ejected from the tank is mixed with primary air
The air is supplied to the second internal space 316 through the mixing pipe 326.

The supply of fuel gas to the first and second fuel nozzles 328 and 330 is controlled by a control valve 332 shown in FIG. The illustrated control valve 332 includes a hollow cylindrical valve housing 334, and first and second valve seats 336 and 338 are provided at an intermediate portion of the valve housing 334. One end side (left side in FIG. 7) of the valve housing 334 is a supply source (not shown) for supplying a fuel gas (for example, a gas supply pipe when the fuel gas is city gas,
When the fuel gas is, for example, LP gas, it is, for example, a gas cylinder), and the fuel gas from the supply source is supplied as shown by an arrow.

First and second feed pipes 340 and 342 are connected to the valve housing 334. Valve housing 33
4 between the first and second valve seats 336 and 338,
A first feed hole 344 is formed, and one end of a first feed pipe 340 is connected to the first feed hole 344, and the other end is connected to a first fuel nozzle 328 (FIG. 6). Also,
A second supply hole 346 is connected to the other end side (right side in the drawing) of the valve housing 334 from the second valve seat 338, and one end of a second supply pipe 342 is connected to the second supply hole 346. The other end is connected to the second fuel nozzle 330 (FIG. 6). Accordingly, fuel gas from a supply source (not shown) is supplied to the first fuel nozzle 328 through the first supply hole 344 and the first supply pipe 340, and the second supply hole 34 is provided.
6 and the second fuel nozzle 330 through the second feed pipe 342.
Supplied to

A valve body 350 is movably provided in the valve housing 332. The illustrated valve body 350 includes a moving rod 352, and the first valve portion 354, the second valve portion 356, and the sealing support portion 3 are arranged in this order from the distal end of the moving rod 350.
58 are provided. An O-ring 360 for sealing is mounted on the outer periphery of the sealing support 358. The sealing support portion 358 supports the valve body 332 so as to be movable in the left-right direction in FIG. 7 with respect to the valve housing 334, and the valve body 332 is moved from the closed position shown in FIG. 7A to the intermediate position shown in FIG. It is freely movable through the position to the fully open position shown in FIG.

In this embodiment, the first valve portion 354 is formed in a substantially conical shape, and when the valve body 350 is at the above-mentioned closed position, the first valve portion 354 shown in FIG.
As shown in (a), the first valve seat 3 on the valve housing 334 side is used.
36, and closes the flow path opening of the first valve seat 336.
Further, the second valve portion 356 is formed in a cylindrical shape, and the valve body 352 is formed.
7 moves from the closed position to the intermediate position while FIG.
As shown in (a) and (b), it is fitted to the second valve seat 338 to close the flow path opening of the second valve seat 338.

In the gas burner provided with such a control valve 332, the valve body 350 can be moved by operating an operation lever (not shown). When the operation lever is operated to position the valve body 350 at the closed position, the first valve portion 354 of the valve body 350 closes the first valve seat 336 as shown in FIG. (Not shown) does not flow through the flow openings in the first valve seat 336, and therefore the first and first fuel nozzles 328, 328,
The fuel gas is not ejected from 330 and the burner body 302
Is not supplied with fuel gas.

When the operating lever is operated to move from the closed position to the intermediate position, as understood from FIGS. 7A and 7B, the first valve portion 354 of the valve body 350 is moved to the first valve seat. The gap between the first valve seat 336 and the first valve portion 354 gradually increases with the movement. Therefore, fuel gas from a supply source (not shown) flows through the flow path opening of the first valve seat 336, is supplied to the first fuel nozzle 328 through the first supply pipe 340, and is injected from the first fuel nozzle 328. The supplied fuel gas is supplied to the first internal space 314 through the first mixing pipe 324 together with the primary air, and the supply amount increases as the valve body 350 approaches the intermediate position. The mixed gas thus supplied is supplied to the plurality of first flame holes 318.
, And can be heated and cooked by the combustion gas from the first flame holes 318. At this time, the valve body 35
The second valve portion 356 of 0 closes the flow path opening of the second valve seat 338. Therefore, the fuel gas flowing through the passage opening of the first valve seat 336 does not flow through the passage opening of the second valve seat 338, and the fuel gas is supplied from the second fuel nozzle 330 to the second internal space 316. It will not be done. As described above, at this time, the first internal space 314
The mixed gas is ejected through the flame hole 318 and the first flame hole 31
With the mixed gas from No. 8, heating and cooking can be performed with relatively low heat power.

When the operating lever is further operated to move from the intermediate position to the fully open position, as understood from FIGS. 7B and 7C, the second valve portion 35 of the valve body 350
6 also moves away from the second valve seat 338, and the gap between the second valve seat 338 and the second valve portion 356 gradually increases with the movement. Therefore, fuel gas from a supply source (not shown) flows through the flow path opening of the first valve seat 336 and is supplied to the first fuel nozzle 328 through the first feed pipe 340, and the second valve seat 3
38, through the second feed pipe 342,
The fuel is supplied to the fuel nozzle 330 and the first fuel nozzle 32
8, the supply amount to the second fuel nozzle 330 increases as the position approaches the fully open position. The fuel gas injected from the first fuel nozzle 328 is supplied to the first internal space 314 through the first mixing pipe 324 together with the primary air, and is ejected to the outside from the plurality of first flame holes 318 through the first internal space 314. You. Also,
The fuel gas injected from the second fuel nozzle 330 passes through the second mixing pipe 326 together with the primary air to form the second internal space 3.
The fuel gas is supplied to the fuel cell 16 and is discharged from the plurality of second flame holes 318 to the outside through the first internal space 316. The discharge amount increases as the position approaches the above-described fully open position. in this way,
Combustion gas is generated from the first and second flame holes 318, 320,
With these combustion gases, heating and cooking can be performed with relatively strong heat. In particular, in this embodiment, as described above, the combustion gas from the second flame hole 320 extends obliquely upward inward in the radial direction, and the tip of the flame is concentrated at the center of the burner main body 302. And the heating efficiency by the combustion gas can be further increased.

Although various embodiments of the gas burner according to the present invention have been described above, the present invention is not limited to these embodiments, and various changes and modifications can be made without departing from the scope of the present invention.

[0057]

According to the gas burner of the first aspect of the present invention, since the plurality of first flame holes formed on the side wall of the burner main body extend upward, the combustion gas from the first flame hole is discharged as described above. The combustion gas can be directed upward along the side wall by the Coanda effect. Further, since the plurality of first flame holes are elongated in the horizontal direction, a flame having a small width in the direction perpendicular to the side wall is generated widely in the horizontal direction, and the heating efficiency of the combustion gas can be increased. Further, since a plurality of second flame holes are provided in the top wall of the burner main body, these second flame holes are provided.
The fuel gas is also heated by the combustion gas from the flame holes, so that the heating efficiency of the combustion gas can be further increased and the thermal power of the combustion gas can be increased.

Further, according to the gas burner of the second aspect of the present invention, the flame is generated in a circular shape upward from the second flame hole.

Further, according to the gas burner of the third aspect of the present invention, it is possible to heat and cook with a strong thermal power by the combustion gas from the main flame for heating, and to use the combustion gas from the small flame for heat insulation combustion. It can be cooked with low heat. Further, when the main flame for heating is used, combustion gas is also generated from the second flame, and heating is performed by the combustion gas from the main flame for heating and the second flame, so that the heating power of the burner can be further increased.

According to the gas burner of the fourth aspect of the present invention, when the thermal power is relatively weak, the combustion gas is generated from the first flame hole, while when the thermal power is relatively strong, the combustion gas is generated from the first and second flame holes. Gas is generated, and the combustion gas generated from the second flame hole can increase the combustion heating power.

According to the gas burner of claim 5 of the present invention, since the top wall of the burner main body has a substantially inverted conical shape, the flame from the second flame hole of the top wall is obliquely upward toward the center. Accordingly, the combustion gas from the second flame hole can be concentrated near the center of the burner, and the heating efficiency of the combustion gas from the second flame hole can be further increased.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a gas burner according to the present invention.

FIG. 2 is a plan view of the gas burner of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a sectional view showing a second embodiment of the gas burner according to the present invention.

FIG. 5 is a sectional view showing a third embodiment of the gas burner according to the present invention.

FIG. 6 is a sectional view showing a fourth embodiment of the gas burner according to the present invention.

7A and 7B show a main part of a control valve for controlling the supply of fuel gas of the gas burner of FIG. 6, wherein FIG. 7A shows a state when the valve body is in a closed position, and FIG. It is sectional drawing which shows the state at the time of an intermediate position, and (c) which shows the state at the time of a valve body being in a full open position, respectively.

[Explanation of symbols]

 2, 102, 202, 302 Burner body 6, 106, 206, 306 Top wall 8, 108, 208, 308 Outer peripheral side wall 12, 112 Internal space 14, 114, 318 First flame hole 16, 116, 222, 320 Second Flame holes 212,314 First internal space 216,316 Second internal space 218 Main flame hole for heating and combustion 220 Small flame hole for insulated combustion 332 Control valve 334 Valve housing 350 Valve body

Claims (5)

[Claims] A burner main body having a side wall extending substantially vertically and defining a part of the internal space, and a top wall covering an upper surface of the internal space; a burner main body connected to the burner main body and mixed with the internal space; A mixing pipe for feeding gas; and a plurality of first pipes for ejecting the mixed gas fed to the internal space to the outside on the side wall of the burner main body. A flame hole is provided, and the plurality of first flame holes are inclined upward from the internal space to the outside and extend upward, and their horizontal width is formed larger than their vertical width. A gas burner, wherein the top wall of the burner main body is provided with a plurality of second flame holes for ejecting the mixed gas supplied to the internal space to the outside. 2. The gas burner according to claim 1, wherein the plurality of second flame holes are formed in a circular shape. 3. The plurality of first flame holes are composed of a plurality of main flame holes for heating and combustion, and a plurality of small flame holes for insulated combustion, and the internal space is formed of the plurality of main flame holes. A first internal space communicating with the flame holes and a second internal space communicating with the plurality of small flame holes;
2. An internal space, wherein the plurality of second flame holes communicate with the first internal space.
Or the gas burner according to 2. 4. The internal space is composed of a first internal space communicating with the first flame hole and a second internal space communicating with the second flame hole, and the first internal space communicates with the first flame hole when the heating power is relatively weakened. The mixed gas is supplied to the internal space, heated by the combustion gas from the first flame hole, and when the thermal power is relatively increased, the mixed gas is supplied to the first and second internal spaces,
3. The gas burner according to claim 1, wherein the gas is heated by combustion gas from the first and second flame holes. 5. The burner body is annular and has an outer peripheral side wall and an inner peripheral side wall extending substantially vertically, and upper ends of the outer peripheral side wall and the inner peripheral side wall are connected by the top wall, Has a substantially inverted conical shape that is inclined downward from the outer peripheral side wall toward the inner peripheral side wall, the plurality of first flame holes are provided at an upper end portion of the outer peripheral side wall, and the plurality of 3. The gas burner according to claim 1, wherein a second flame hole is provided.