JP2708693B2 - Gas burner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas burner mainly mounted on a grill of a stove.

[0002]

2. Description of the Related Art A grill burner is provided in which a row of flames is provided in a horizontally installed pipe-shaped burner, and flame holding fins are provided below the row of flames in parallel with the row of flames. It is used. (For example, Japanese Utility Model Application Laid-open No. Sho 62-148826) Conventional flame holding fins prevent flame sway, lift, and misfire due to blow-up convection from below generated during combustion in a grill chamber, and steam rising from below generates flame. It was formed in order to prevent combustion instability by wrapping it. For this reason, the flame holding fin is formed in a longitudinal direction protruding substantially horizontally from the pipe-shaped burner portion, and the connecting portion between the upper surface of the flame holding fin and the upper surface of the burner portion has a concave corner.

[0003]

However, the gas burner for grills has the following disadvantages. B) When the broth jumped from the food adheres to the concave connecting portion between the upper surface of the flame holding fin and the upper surface of the pipe-shaped burner portion, it tends to stay at the connecting portion due to surface tension. For this reason, the scorch of the broth accumulates at the connecting portion, and the flame opening is likely to be closed. B) The flame easily contacts the upper surface of the flame holding fin, causing overheating and thermal deterioration of the burner. SUMMARY OF THE INVENTION It is an object of the present invention to prevent the scorching of broth and the like from accumulating on a connecting portion between the upper surface of a pipe-shaped burner portion installed horizontally and the upper surface of a flame holding fin. And to provide a gas burner that can effectively prevent heat deterioration.

[0004]

According to the gas burner of the present invention, a row of burners is formed on the side surface of a horizontally installed pipe-shaped burner, and a row of burners is provided below the row of burners in parallel with the row of burners. A gas burner provided with a flame holding fin,
The upper surface of the flame holding fin is inclined downward in the range of 10 to 60 degrees with respect to the horizontal, and smoothly continues to the upper surface of the pipe-shaped burner portion through a corner having a radius of curvature of 5 mm or more. It is characterized by being.

[0005]

According to the present invention, the upper surface of the flame holding fin is inclined downward in the range of 10 to 60 degrees with respect to the horizontal, and the upper surface of the pipe-shaped burner has a radius of curvature of 5 mm or more. It is smoothly continuous through the corners. For this reason, even if the broth of the cooked food flies and adheres to the connecting portion, the broth easily flows down and is prevented from staying at the connecting portion. As a result, it is possible to prevent problems such as burning of the broth accumulating on the connecting portion and blocking of the flame opening, or overheating or thermal deterioration of the burner due to the flame coming into contact with the flame holding fins.

[0006]

1 and 2 show a gas burner 1 according to the present invention.
FIG. 3 shows a cooking stove 10 equipped with the gas burner 1. The gas burner 1 has upper and lower two sheet metal 1A,
1B, the sheet metal 1A, 1B is formed by swelling and deforming a predetermined position facing each other upward and downward, and abutting and fixing the two. The gas burner 1 includes a pipe portion 11 formed by the bulging portions 1C and 1D of the sheet metals 1A and 1B, and a flat portion 1 around the bulging portions 1C and 1D.
The fin portion 12 is formed by E and 1F and surrounds the outer periphery of the conduit portion 11. The sheet metals 1A and 1B are integrated by caulking the edge 13 of the fin portion 12. The pipe section 11 is composed of an inlet 21 for primary air and fuel gas, a mixing pipe 22, and a burner section 2 in the form of a U-shaped pipe.

On the inner side of the upper surface of the U-shaped pipe-shaped burner portion 2, a row of flame ports 3 is formed. Below the row of flames 3, a portion of the fins 12 located inside the burner 2 is formed as a flame holding fin 4 for the flame B burning in the row of flames 3. The flame holding fins 4 cause the flame to fluctuate due to blow-up convection from below generated during combustion in the grill storage 10,
It is formed to prevent lift and misfire, and to prevent steam rising from below from wrapping the flame and destabilizing combustion. The upper surface 41 of the flame holding fin 4 is smoothly continuous with the upper surface 2A of the burner portion 2 and is inclined downward from the horizontal.

In this embodiment, the flame holding fins 4 are inclined downward at an inclination angle α = 30 degrees with respect to the horizontal, and the upper surface 41 is burned through a corner (connecting portion) 42 having a minimum radius of curvature R = 10 mm. It is continuous with the upper surface 2A of the part 2. Thereby, even if the broth jumped from the food reaches the inner upper surface 2A of the burner portion 2, the surface of the corner 42 or the upper surface 41 of the flame holding fin 4, it flows smoothly. As a result, it is possible to prevent a problem that the scorch of the broth accumulates at the corner 42 and the flame opening is blocked. In addition, it is possible to prevent the flame B from contacting the upper surface of the flame holding fins 4 to overheat the gas burner 1 and to prevent the flame holding fins 4 from being thermally degraded.
In order to effectively prevent the adhesion of the broth and the contact of the flame, the inclination angle α is inclined downward in the range of 10 to 60 degrees, preferably 20 to 40 degrees with respect to the horizontal, The radius of curvature R of the corner 42 must be R> 5 mm and infinite (flat), which is desirable from the viewpoint of preventing the scorching of the broth in the corner 42 and the overheating and thermal deterioration of the flame holding fins 4. The flame holding fins 4 of the gas burner 1 are horizontal when the metal plates 1A and 1B are swaged,
After that, the gas burner 1 is placed in the lower mold shown in the dotted line in FIG.
In response, it bends and tilts.

As shown in FIG. 3, the gas burner 1 is installed on the upper part of a grill storage 10, and the heat generated by the flames in the flame row 3 is converted into infrared rays by a reflecting plate 5 arranged on the ceiling of the grill storage 10, and the grill storage is turned on. Lead to the center of 10. A grill 6 is provided at the center of the grill box 10 and a water tray 7 is provided at the bottom. The gas burner 1 of the present invention can be used in places other than the grill storage, and includes flat portions 1E, 1E of sheet metals 1A, 1B.
F may be fixed by spot welding or may be formed of a material other than sheet metal. The burner portion 2 may be made of a pipe material, and the flame holding fins 4 may be formed separately and welded to the burner portion 2.

[Brief description of the drawings]

FIG. 1 is a perspective view of a gas burner of the present invention.

FIG. 2 is an enlarged sectional view of a gas burner.

FIG. 3 is a schematic configuration diagram of a stove grill.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gas burner 2 Burner part 3 Flame row 4 Flame holding fin 10 Grill storage 42 Corner

Claims (1)

(57) [Claims] 1. A gas burner comprising: a row of burners formed horizontally on a side surface of a pipe-shaped burner portion; and a flame holding fin provided in parallel with the row of burners below the row of burners. The upper surface of the flame holding fin is 10 degrees with respect to the horizontal.
Angled downward in the range of
A corner with a radius of curvature of 5 mm or more on the upper surface of the I-shaped burner
A gas burner characterized by being continuously connected through a gas burner.