JP2020118433A - Internal flame burner - Google Patents

Abstract

To provide an internal flame burner that is performed by stainless steel press working, increases an areas of a burner hole, and thereby enables combustion with much amount of gas.SOLUTION: An internal flame burner is provided in which a gas inflow port 27 and outlet 28 of a predetermined dimension are formed by forming a slant of 25° from a circular conic annular outer circumferential part 22 toward an inner circumferential part 21, advancing to a refraction point 29 from the outer circumferential part 22 toward the inner circumferential part 21, and being slanted by 20° from the refraction point 29. In the circular conic ring, 30-places of burner hole tunnels 23 and burner port grooves 24 are continuously arranged across a sidewall 26 in the same direction, respectively. In the upper circular ring x and the lower circular ring Z, two pieces are formed vertically by sandwiching a partition plate y in between. The upper circular ring x and the partition plate y and the lower circular ring z are sandwiched by a burner head 4 and a burner body 11. The burner hole tunnel 23 and the burner port groove 24 are configured in a shape in communication from the gas inflow port 27 to the outlet 28.SELECTED DRAWING: Figure 5

Description

According to the present invention, an annular ring e sandwiched between the burner head 4 and the burner body 11 is composed of a partition plate y formed in a conical shape and an upper annular ring x and a lower annular ring z formed at the same inclination upward. , A configured internal flame burner.
The present invention relates to an internal flame burner having a large number of flame holes that open inwardly on the inner circumference of an annular burner body.

The conventional internal-flame burner requires the intake of secondary air around the flame holes, and the space for the secondary air to enter between the flame holes.Adjacent flame holes are independent of each other. The internal flame burner cannot be configured with a large number of flame holes because it is designed to easily take in air. A small internal flame burner that reduces the diameter of the internal flame burner. However, the combustion area is insufficient due to the need for a secondary air space, and if a large amount of gas is burned, incomplete combustion will occur.If the diameter of the flame hole is increased, a flashback will occur and a combustion test will be performed. There was a difficult technique to pass.

Further, in the internal-flame burner shown in Patent Documents 1 and 2, each flame hole is inclined in the circumferential direction at a predetermined swing angle, and the flame generated by the combustion of ejected gas from each flame hole is swirled in the central portion of the burner. It is known that while joining together, a columnar collective flame that rises upward is formed. However, in both cases, a space for taking in secondary air is required around the flame holes, and a large number of flame hole portions cannot be formed on the same inner peripheral surface.

JP-A-4-353308 Japanese Patent No. 4129281

In the conventional internal flame burner, each flame hole is tilted in the circumferential direction at a predetermined swing angle so that the gas ejection axis from each flame hole is tilted in the circumferential direction. It is known that the formation of the slab is formed. (For example, refer to Patent Document 1) (Refer to Patent Document 2) There is also an internal flame burner that ejects gas by changing the angle at the contact point with the gas ejection axis line at the lower stage and the upper stage, but maintains the combustibility. However, in order to improve the thermal efficiency, it is necessary to take in a large amount of secondary air from around the flame holes. The present invention has been made to eliminate the above drawbacks.

In an internal flame burner including a burner head 4, a burner body 11, and an annular portion e, the annular portion e is composed of an upper annular ring x, a lower annular ring z, and a partition plate y sandwiched between upper and lower annular rings. The upper and lower circular rings have concave grooves and convex grooves alternately and continuously formed. Further, each concave groove and each convex groove have a swing angle range of 10° with respect to the center line of each circular ring. It is an internal flame burner formed at 30°.

An internal flame type in which the upper annular ring x is formed so as to be ejected in two upper and lower directions in the same direction with the partition plate y sandwiched by the refraction point 29 at the center of the flame hole tunnel 23 and the flame hole groove 24. As shown in FIG. 7, the burner passes from the gas mixture passage 12 to the gas inlet 27 of the upper annular ring x to the jet outlet 28, is divided into the upper flame 51 and the lower flame 52, and can be burned by mixing the primary air. The outer peripheral flame 53 and the lower inner peripheral flame 54 are jetted obliquely from the jet outlet 28 having a diameter smaller than that of the gas inlet 27, so that the speed is increased and a double swirl between the outer peripheral flame and the inner peripheral flame is generated. Then, the mixture of the gas is improved, and the structure in which the secondary air is easily taken in is formed. In the upper and lower circular rings x and z of the first and second stages, since the flame hole tunnel 23 and the flame hole groove 24 are continuously arranged in the same direction with the side wall 26 interposed therebetween, the flame is formed against the inner peripheral portion 21. The hole area is increased and the amount of gas can be increased. Although the flame swirls obliquely upward and the upper stage flame 51 and the lower stage flame 52 can be burned by the primary air, the peripheral flame 53 and the inner peripheral flame 54 swirl faster due to the increase in the gas amount, and the peripheral flame 53 is larger than the outside. By taking in air and swirling the inner peripheral flame 54, it is possible to take in air from the lower part and burn it.

In the configuration of Patent Document 2, the rated input amount is 3650 kcal per hour, the burner inner diameter is 105 mm, the rated input amount is 1390 kcal per hour, the burner inner diameter is 65 mm, and the present invention is the burner inner diameter is 70 mm. , Can be burned. A larger flame hole area can be formed than the inner peripheral surface of the conventional burner. The gas passage length of the flame hole tunnel 23 and the flame hole groove 24 is longer and lower than the ejection outlet area, and the gas inlet port 27 of the flame hole tunnel 23 and the flame hole groove 24 is wide, and The outlet 28 is formed narrow and the height is the same as that of the gas inlet 27. As the gas amount increases, the jetting power also increases and the swirling speed also increases, so that the gas combustion test of lift, back gas, and Co2 could be cleared. Moreover, since the ejection speed is high, the gas burner a does not reach a high temperature.

As shown in FIG. 5, an annular ring e is formed by pressing between the upper frame 3 and the lower frame 8 made of stainless steel. The feature is that a stainless steel press internal flame burner can be easily manufactured. Since the present invention is configured as described above, even if the inner peripheral portion 21 has a small diameter, the area of the gas ejection port is increased to allow the gas to flow from the upper and lower two stages of the flame holes to the upper flame 51, the lower flame 52, and the flame outer flame. An internal flame burner that swirls 53 and the lower inner flame 54 to allow secondary air to be taken in easily from the outside and from the bottom, and can be used by processing the inner diameter 21 into a small diameter even for small gas appliances. Becomes It is smaller than the conventional internal-flame burner and enables high-power combustion. It is inexpensive and can be mass-produced.

It is a burner perspective view provided with the internal flame burner of embodiment of this invention. It is an AA" sectional view concerning the present invention. It is a BB" sectional view concerning the present invention. It is a partial schematic expanded perspective view which shows some upper ring x and lower ring z of the internal combustion type burner of this invention. It is an exploded perspective view showing composition of an internal flame burner of the present invention. It is explanatory drawing of the swing angle of the upper ring x and the lower ring z of the ring e of the internal flame burner of this invention. It is explanatory drawing explaining the combustion state of the internal flame type burner of this invention, and is a figure which shows the feature in which the flame outer peripheral flame 53 and the lower stage inner peripheral flame 54 are swirled and formed in the inside. The perspective view which shows the 1st annular ring part in which combustion failure generate|occur|produced. Explanatory drawing which shows the swing angle of a torus. Explanatory drawing showing swing angle of torus FIG. 11 is a partial schematic enlarged explanatory view showing a part of FIG. 10.

FIG. 1 is a perspective view of a burner equipped with the internal flame burner of the present invention, and as shown in the exploded perspective view of FIG. 5, it is composed of a burner head 4, a burner body 11, and an annular ring e. The upper frame 3 is a gas burner made by processing stainless steel, and the regulator 1 necessary for gas combustion, the mixing tube 2, the burner head 4, the upper frame top 5, the outer peripheral wall 7, the inner peripheral portion 13 of the burner head. Is composed of one. A shielding plate 10 is formed on the upper frame top 5 so that the gas is evenly distributed to the inner peripheral portion of the upper frame 3. The lower frame 8 is also integrally formed with the regulator 201, the mixing tube 202, the inner peripheral wall 6, the lower frame 8, the lower frame bottom 9, and the burner body 11. The upper frame 3, the lower frame 8 and the ring e are integrally formed so that the burner head inner peripheral part 13, the inner peripheral parts 21 and 31 of the ring e, and the burner body inner peripheral part 14 are aligned. This is a structure in which gas and primary air are sucked from the regulator 1 of the internal flame burner and are sent out from the mixture passage 12 to the annular portion through the mixing pipe 2. The shielding plate 10 causes the gas to be evenly ejected from the inner peripheral portion.

The ring e is composed of an upper ring x, a partition plate y and a lower ring z. In addition, flame hole tunnels 23 having a convex cross section and flame hole grooves 24 having a concave cross section are alternately and continuously formed in the annular ring x.
The flame hole tunnel 23 has an inclination of 25° from the outer peripheral portion 22 (φ84 mm) of the circular ring e above the inner peripheral portion 21 (φ70 mm) and toward the center line of the upper circular ring x. 20° from the bending point 29 toward the bending point 29 toward the bending point located at the center of the inner diameter of the inner circumferential portion 21 (the upper annular ring x is the central portion of the flame hole tunnel 23 and the flame hole groove 24). It is inclined at an angle. The outer circumference of the flame hole groove 23 is 3.5 mm, the inner circumference is 2.8 mm, the height is 1.5 mm, and the gas inlet 27. The partition plate y has a conical annular shape in which an inclination of 25° is formed upward from the outer peripheral portion 22 (φ84 mm) of the circular ring e to the inner peripheral portion 21 (φ70 mm). The partition plate y constitutes an upper wall of the flame hole groove 24 of the lower ring z by being sandwiched between the upper ring x and the lower ring z, and the flame hole tunnel 23 of the upper ring x is formed. By configuring the lower wall, a gas communication hole that communicates from the gas inflow port 27 to the ejection port 28 is formed. Further, by incorporating the circular ring e between the burner head 4 and the burner body 11, the inner wall of the burner head 4 constitutes the upper wall of the flame hole groove 24 of the upper circular ring x, and the inner wall of the burner body 11 is the lower wall. By forming the lower wall of the flame hole tunnel 23 of the circular ring z, a new gas communication hole is formed in addition to the above-described gas communication hole.

A flame hole groove 24 and a flame hole portion tunnel 23 are communicated from the outer peripheral portion 22 toward the inner peripheral portion 21 to the circular ring e that is continuously provided in a conical annular shape to form 30 pieces each. The flame hole portion is formed by processing the partition plate y with an outer peripheral portion φ84, an inner peripheral portion φ70, and a plate thickness of 0.5 mm, and the conical inner peripheral portion 21 is formed higher than the outer peripheral portion 22 at an inclination of 25°. A flame hole groove 24 and a flame hole tunnel 23 having a concave shape and a convex shape are formed from the same shape as the partition plate y. The partition plate has a width of 7 mm and is a straight line toward the center up to 3.5 mm, and is inclined 20° from the center point so that the gas inlet 27 width is 3.5 mm, the jet outlet 28 width is 2.8 mm, and the height. Is formed with a thickness of 1.5 mm, and 30 peaks and 30 valleys are formed on the entire inner peripheral portion so that concaves and convexes intersect. The front upper ring x, the lower ring z, and the partition plate y form a partition plate between two upper and lower rings. Since the width of the gas inlet 27 is formed wide, the gas can easily flow in, and the outlet 28 is formed narrow so that the speed is increased at the time of ejection. During combustion, the upper and lower stages of the upper and lower rings are swirled and burned by the upper flame 51 and the lower flame 52 taking in the primary air. At that time, the outer flame 53 and the inner flame 54 are swirled to take in the secondary air. Are many. Further, the inner peripheral flame 54 is a phenomenon caused by being pulled up by the combustion of the outer peripheral flame 53. The present invention is an internal flame burner having the above-mentioned structure.

As described above, the internal flame burner of the embodiment advances from the outer peripheral portion 22 toward the inner peripheral portion 21 to the refraction point 29 and is formed at a swing angle of 20° from the refraction point 29. The lower limit of the swing angle is 10° because the minimum diameter that the lower inner peripheral flame 54 can form is 10° or more, and the maximum diameter that the lower inner peripheral flame 54 can form is set within 30° as shown in FIG. By doing so, the speed at which the gas is ejected from the ejection port 28 can be increased, so the upper limit of the swing angle is 30°. FIG. 11 shows a range in which the flame does not decelerate, and if the angle exceeds 30°, the width of the ejection port 28 becomes narrow and combustion becomes poor.

It can be used for various types of gas appliances.

a Gas burner 1 Regulator 201 Regulator 2 Mixing pipe 202 Mixing pipe 3 Upper frame 4 Burner head 5 Upper frame top 6 Inner peripheral wall 7 Outer peripheral wall 8 Lower frame 9 Lower frame bottom 10 Shielding plate 11 Burner body 12 Mixture passage 13 Inside burner head Circumferential portion 14 Burner body inner peripheral portion X Upper circular ring Z Lower circular ring 21 Inner peripheral portion 23 Outer peripheral portion 23 Flame hole tunnel 24 Flame hole groove 25 Upper portion 26 Side wall 27 Gas inlet 28 Jet outlet 29 Refraction point Y Partition plate 31 Inner peripheral portion 32 Outer peripheral portion 51 Upper stage flame 52 Lower stage flame 53 Flame outer peripheral flame 54 Lower stage inner peripheral flame e, f Ring k Flame hole 101 Inner peripheral portion 102 Outer peripheral portion 103 Flame hole tunnel 104 Flame hole groove 105 Upper portion 106 Side wall 107 Gas inlet 108 Jet outlet

Claims (2)

In an internal flame burner including a burner head 4, a burner body 11, and an annular portion e, the annular portion e is composed of an upper annular ring x, a lower annular ring z, and a partition plate y sandwiched between upper and lower annular rings. The upper and lower circular rings have concave grooves and convex grooves alternately and continuously formed. Further, each concave groove and each convex groove have a swing angle range of 10° with respect to the center line of each circular ring. Inner flame burner formed at 30°. The internal flame burner according to claim 1, wherein all the swing angles of the concave groove and the convex groove are the same, and the gas inlet of each groove is formed larger than the gas outlet.

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