JP2000035204A - Ring burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ring burner in which flame extends outward when it is large to increase the thermal efficiency without its contact with the outer periphery of a pot, by asymmetrically providing protrusions and recessions in the right and left sides of at least some of burner ports. SOLUTION: A protrusion 27 is welded at one horizontal side of a burner port 26. A gaseous mixture for combustion ejecting out of a burner housing forms flame 28a without influence of the protrusion 27 when its ejecting volume is small, but the flame 28b bends to the side where there is no protrusion 27 owing to the protrusion 27 when its ejecting volume is large. In this way, when the mixture volume ejecting from the burner port is large, the flame bends to the opposite side of the protrusion or the recession side to prevent the flame from getting long and increase the thermal efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ring burner used for a stove for business use or home use.

[0002]

2. Description of the Related Art In a conventional ring burner, a plurality of flame holes are provided on an outer side and / or an inner side of a ring at an upper portion of a ring-shaped burner housing. The left and right are substantially symmetric.

As shown in FIG. 5, in a conventional ring burner 1, a flame hole 3 is uniformly provided in a radial direction of a ring constituting a burner housing 2, and a flame 4 is formed from the flame hole 3 in a radial direction. Therefore, the suction of the secondary air is poor.
The flame 4 squirting from the flame hole 3 provided on the outside extends, and when the pan or the like is heated, the flame 4 hits the periphery of the pan and lowers the thermal efficiency. In the range, a pot is used to put a pot, and flame 4 hits the leg of the pot, and the heat in that part is used to heat the pot.

In order to prevent the flame from extending in the radial direction of the ring, a swirling flow burner having a flame hole provided obliquely to the wall surface of the burner housing has been developed. However, it is difficult and troublesome to pierce the wall of the burner housing in an oblique direction.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a ring burner which has good suction of secondary air and is easy to manufacture.

[0006]

According to the present invention, there is provided a ring-shaped burner housing for defining a mixed gas space, and a mixed gas inlet connected to the burner housing for introducing a mixed gas for combustion into the mixed gas space. A plurality of flame holes formed at an upper portion of the burner housing and inside and / or outside of the ring, and the combustion gas introduced into the mixed gas space is provided with the plurality of flame holes. A ring burner which is ejected through the hole and ignites and burns, wherein at least a part of the outlets of the flame holes are provided with asymmetrical irregularities on the left and right sides.

According to the present invention, at least some of the outlets of the flame holes are provided asymmetrically on the left and right sides. The mixed gas ejected from the flame hole provided with the convex portion on one side of the outlet is ejected obliquely to the other side. Further, the mixed gas ejected from the flame hole having the concave portion on one side is ejected obliquely to one side.
The angle at which the mixed gas is ejected increases as the amount of ejected gas increases, when the size of the projections or depressions is the same.
Therefore, when the combustion load increases, a large amount of secondary air is entrained to prevent the flame from extending for a long time. In addition, a convex portion is attached to one of the right and left sides of the flame hole by welding or the like or only one of the portions is cut away to provide a concave portion. In addition, the flame holes at the parts where the legs of the virtues come can be provided with appropriate protrusions or depressions, so that the flames can be prevented from hitting the legs in the event of a large fire (maximum combustion load).

The present invention is characterized in that unevenness is provided asymmetrically on the left and right sides in the horizontal direction of the outlets of at least some of the flame holes provided outside the ring.

According to the present invention, the above processing is performed on the left and right sides in the horizontal direction of the flame holes provided outside the ring. Thus, in the event of a large fire, the flame extends outward, so that the flame does not hit the peripheral portion of the pot, so that the thermal efficiency can be improved.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to embodiments. FIG. 1 is a partially cutaway plan view of a combustion apparatus 11 including a ring burner 21 according to an embodiment of the present invention. Fuel gas such as city gas is ejected from the nozzle 12 to the mixing pipe 14, and primary air is
The fuel gas is sucked from the air holes 13 provided in the vicinity of the fuel gas. The fuel gas and 1
The secondary air is sufficiently mixed with the ring burner 2 from the center line.
1 is supplied. The mixing pipe 14 also serves as a mixed gas introduction pipe.

FIG. 2 is a sectional view taken along section line II-II in FIG. Burner housing 22 of ring burner 21
Has a substantially rectangular ring shape in cross section, and has a horizontal surface 23, a surface 24 inclined inside the ring, and a surface 25 inclined outside the ring.
5 is provided with a flame hole 26.

FIG. 3 is an enlarged sectional view of the vicinity of the flame hole 26 of the ring burner 21 according to one embodiment of the present invention. Flame hole 2
A convex piece 27 is welded to one horizontal side (left side in FIG. 3) of No. 6. The combustion gas mixture ejected from inside the burner housing 22 is not affected by the projection 27 when the ejection amount is small (small fire) and forms a flame 28a. Under the influence of 27, the flame 28b bends to the side without the protrusion 27 (to the right in FIG. 3). Convex part 27
May be provided on the same side of all flame holes 26, but FIG.
As shown in FIG.
8b and 28c may interfere with each other. In addition, as shown in FIG. 1, the flame holes 26 on both sides of the location where the leg 29 of the virtue is present may be provided with a convex portion 27 so that the flame does not hit the leg 29. In FIG. 1, the convex portions 27 are indicated by black circles.

FIG. 4 shows a flame hole 3 according to another embodiment of the present invention.
6 is an enlarged sectional view of FIG. On one side in the horizontal direction of the flame hole 36 (the right side in FIG. 4), the outside of the wall of the burner housing 22 is cut off to form a recess 37. The combustion gas mixture ejected from the burner housing 22 is affected by the recess 37 in the event of a large fire, and the flame 38 bends toward the side of the recess 37 (to the right in FIG. 4).

As described above, in the event of a large fire, a part of the flames 28, 38 is ejected obliquely to the wall surface of the burner housing 22, so that the lengths of the flames 28, 38 do not extend, and the protrusions 27 or recesses 37 are not provided. By devising the flame holes 26 and 36 provided with the holes, the flames 28 and 38 interfere with each other to improve the suction of the secondary air, and the flames 28 and 38 can be prevented from hitting the leg 29 of Gotoku, so that the thermal efficiency can be improved. Can be improved.

In the above-described embodiment, the flame holes 26 and 36 are formed on the inner and outer surfaces 2 of the burner housing 22.
4 and 25, but may be provided on either one of them.

[0016]

As described above, according to the present invention, since the protrusion or the recess is provided asymmetrically on one of the left and right sides of the outlet of some of the flame holes, the amount of the mixed gas ejected from the flame hole is reduced. When there is much flame, the flame is inclined to the opposite side of the projection or the side of the depression to prevent the length of the flame from being extended, thereby improving the thermal efficiency.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view of a combustion apparatus 11 including a ring burner 21 according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along section line II-II in FIG.

FIG. 3 is an enlarged sectional view of the vicinity of a flame hole 26 of the ring burner 21 according to one embodiment of the present invention.

FIG. 4 is an enlarged sectional view of the vicinity of a flame hole of a ring burner according to another embodiment of the present invention.

FIG. 5 is an enlarged sectional view showing the vicinity of a flame hole 6 of a ring burner 1 according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Combustion apparatus 14 Mixing pipe (mixed gas introduction pipe) 21 Ring burner 22 Burner housing 26,36 Flame hole 27 Convex part 28,38 Flame 29 Gotoku leg 37 Recess

Claims (2)

[Claims] 1. A burner housing, comprising: a ring-shaped burner housing defining a mixed gas space; and a mixed gas introduction pipe connected to the burner housing for introducing a mixed gas for combustion into the mixed gas space. A plurality of flame holes are formed at an upper portion of the ring and inside and / or outside of the ring, and a combustion mixed gas introduced into the mixed gas space is ejected through the plurality of flame holes to ignite and burn. A ring burner characterized in that at least a part of the outlets of the flame holes are asymmetrically provided on the left and right sides of the burner. 2. The ring burner according to claim 1, wherein at least a part of the outlets of the flame holes provided outside the ring are provided asymmetrically on the left and right sides in the horizontal direction of the outlet.