JP2018189259A - Burner for cooking stove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the position of a burner head as high as possible to the extent that a downward convex curved pot bottom does not interfere in a burner for cooking stove having a plurality of upper stage burner ports 13 and the lower stage burner ports 14 formed in a zigzag shape with position shifted in the circumferential direction in a peripheral wall part 122 of a burner head 12, in which the outer peripheral surface of the peripheral wall part 122 of the burner head 12 is formed into a tapered surface that decreases in diameter upward; and the eaves part 123 is provided on the outer periphery of an end wall part 121 at the upper end of the burner head 12 so as to project radially outwardly from the upper end of the outer peripheral surface of the peripheral wall part 122.SOLUTION: The upper surface of an end wall part 121 of the burner head 12 is formed as a concave surface 121a that is recessed downward. A discharge groove 124 for the boiled spillage juice is formed on the concave surface 121a at a position in the circumferential direction which is within the width of the interval portion between the predetermined upper stage burner port 13 and 13 adjacent in the circumferential direction. The eaves part 123 extends radially outward from a vertical cylindrical surface concentric with the burner head 12, which passes through the lower end of the opening of the lower stage burner port 14.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a stove burner including a cylindrical burner head whose upper end is closed by an end wall portion, and a plurality of flame holes for ejecting air-fuel mixture are formed on the peripheral wall portion of the burner head.

  2. Description of the Related Art Conventionally, as this type of burner for a stove, there has been known one in which flame holes are formed in a plurality of upper and lower stages on a peripheral wall portion of a burner head (see, for example, Patent Document 1). As one of such burner burners, a plurality of staggered upper and lower flame holes are formed in the upper and lower parts of the peripheral wall portion of the burner head, and the burner head is further displaced in the circumferential direction. What formed the outer peripheral surface of the surrounding wall part in the taper surface which diameter-reduces upwards is also known.

  Also, although the flame holes are not formed in a plurality of upper and lower stages, a flange portion is provided on the outer periphery of the end wall portion of the burner head so as to project radially outward from the upper end of the outer peripheral surface of the peripheral wall portion of the burner head. A stove burner is also known in which boiled spilled juice is not applied to the flame holes (see, for example, Patent Document 2).

  By the way, in order to improve thermal efficiency, it is desired to make the position of the burner head as high as possible so that the burner head comes close to the bottom surface (pot bottom) of the cooking container placed on the virtues on the stove top. However, when a cooking container with a curved bottom with a bottom such as a Chinese wok is placed on the five virtues, it is necessary to increase the position of the burner head in order to avoid interference with the end wall of the burner head. There is also a limit.

JP-A-10-153304 JP 2009-121705 A

  SUMMARY OF THE INVENTION In view of the above, the present invention provides a stove burner capable of making the position of a burner head as high as possible within a range in which a downwardly convex curved pan bottom does not interfere. It is said.

  In order to solve the above problems, the present invention includes a cylindrical burner head whose upper end is closed by an end wall portion, and an upper flame hole and a lower stage for jetting an air-fuel mixture at the upper and lower portions of the peripheral wall portion of the burner head. A plurality of stove burners formed in a staggered manner with the flame holes being displaced in the circumferential direction, and the outer peripheral surface of the peripheral wall portion of the burner head is formed into a tapered surface with a diameter decreasing upward, and the burner head The upper surface of the end wall portion of the burner head is a concave surface that is depressed downward, in the outer periphery of the end wall portion of the burner head is provided with a flange that projects radially outward from the upper end of the outer peripheral surface of the peripheral wall portion of the burner head. The outer periphery of the heel part is formed in the concave surface, and is located in a circumferential position that falls within the width of the interval portion between predetermined upper flame holes adjacent in the circumferential direction, and discharges the simmered juice falling on the concave surface A discharge groove reaching the surface is formed, and the buttock of the burner head Through the lower end of the opening of the lower flame holes for the wall portion outer peripheral surface, characterized in Zhang put it radially outward from the vertical cylindrical surface of the burner head and concentric.

  According to the present invention, by forming the upper surface of the end wall portion of the burner head as a concave surface, the upper limit height of the burner head where the downwardly convex curved pan bottom does not interfere with the end wall portion is the upper surface of the end wall portion. Higher than that of a flat surface. Therefore, the position of the burner head can be made as high as possible within the range in which the downwardly convex curved pan bottom does not interfere, and the thermal efficiency can be improved.

  Further, in the present invention, since the discharge groove is formed on the concave surface, the boiled juice is discharged through the discharge groove, and the boiled juice does not accumulate on the concave surface. Here, if the discharge groove is located at the same circumferential position as the upper flame hole, the outlet part of the discharge groove is strongly heated by the flame formed in the upper flame hole, and the spilled juice is burnt on the outlet part End up. On the other hand, in the present invention, since the discharge groove fits within the width of the interval portion between the upper flame holes, the outlet portion of the discharge groove is not heated so strongly by the flame formed in the upper flame hole, Scorching of boiled spilled juice can be suppressed.

  Furthermore, in the present invention, since the heel portion projects outward in the radial direction from the cylindrical surface, the simmered juice discharged from the discharge groove is radially outward from the cylindrical surface, that is, the lower flame hole. It will fall radially outward from the lower end of the opening. Therefore, the boiled sap is not applied to the opening of the lower flame hole.

The perspective view of the parent-child burner which comprises the child burner which is a burner for stoves of embodiment of this invention. The cut-away side view of the parent-child burner of FIG. The perspective view of the burner head which comprises the child burner of the parent-child burner of FIG. The side view of the burner head of FIG. Sectional drawing cut | disconnected by the VV line | wire of FIG.

  1 and 2 show a parent-child burner provided in a stove. This parent-child burner includes a child burner 1 that is a stove burner according to an embodiment of the present invention, and a parent burner 2 that surrounds the child burner 1.

  The parent burner 2 includes a mixing tube 21, an annular burner body 22 that is provided at the downstream end of the mixing tube 21 and surrounds the child burner 1, and an annular burner head 23 that is placed on the burner body 22. ing. A gas nozzle for a parent burner (not shown) faces the inlet 211 at the upstream end of the mixing pipe 21, and a mixture of fuel gas injected from the gas nozzle and primary air sucked from the inlet 211 is mixed with the mixing pipe 21. It is supplied into the burner body 22 through 21. An annular wall 231 is provided on the outer peripheral portion of the lower surface of the burner head 23, and a plurality of grooves are formed in the annular wall 231 at intervals in the circumferential direction, and the main flame hole 24 is constituted by these grooves. doing. Further, a plurality of convex portions 232 are provided on the upper surface of the burner head 23, the upper flame holes 25 are formed in these convex portions 232, and the child burner 1 and the parent burner 2 are formed in a part of the circumferential direction of the burner head 23. A slit-shaped flame transfer flame hole 26 that reaches the inner peripheral portion of the upper surface from the annular wall 231 is formed. The air-fuel mixture supplied into the burner body 22 is ejected from the main flame hole 24, the upper flame hole 25, and the fire transfer flame hole 26 and burned.

  The child burner 1 includes a mixing tube 11 and a cylindrical burner head 12 that is fitted on a downstream end portion of the mixing tube 11 bent upward and has an upper end closed by an end wall portion 121. A gas nozzle for a child burner (not shown) is inserted at the upstream end of the mixing pipe 11. The fuel gas injected from the gas nozzle and the primary air sucked from the inlet 111 opened near the upstream end of the mixing pipe 11. Is supplied into the burner head 12 through the mixing tube 11.

  Referring also to FIGS. 3 to 5, the upper flame hole 13 and the lower flame hole 14 for jetting the air-fuel mixture are staggered in the upper and lower portions of the peripheral wall portion 122 of the burner head 12. A plurality are formed. The upper flame hole 13 is composed of a deceleration flame hole in which the outer peripheral surface side of the peripheral wall 122 is a large-diameter hole 13a so that flame lift can be suppressed. Moreover, the outer peripheral surface of the surrounding wall part 122 is formed in the taper surface which diameter-reduces upwards. In addition, the outer peripheral surface of the fitting part 122a with respect to the mixing pipe 11 of the lower end of the surrounding wall part 122 is formed in the cylindrical surface.

  On the outer periphery of the end wall 121 of the burner head 12, a flange 123 is provided that projects radially outward from the upper end of the outer peripheral surface of the peripheral wall 122 of the burner head 12. Moreover, the upper surface of the end wall part 121 is formed in the concave surface 121a dented below. Thereby, when the cooking container which has the convex curved-shaped pan bottom P (refer FIG. 5) below a wok etc. on the stove top plate which illustration was abbreviate | omitted, the pan bottom P is in the end wall part 121. The upper limit height of the burner head 12 that does not interfere becomes higher than that of a flat upper surface of the end wall portion. Therefore, the position of the burner head 12 can be made as high as possible within the range where the pan bottom P does not interfere, and the thermal efficiency can be improved. In the present embodiment, the concave surface 121a is a curved concave surface, but may be a conical concave surface.

  The concave surface 121 a is formed with a discharge groove 124 that reaches the outer peripheral surface of the bowl 123 for discharging the boiled simmered juice falling here. Therefore, the boiled juice is discharged through the discharge groove 124, and the boiled juice is not collected on the concave surface 121a. Here, if the discharge groove 124 is located at the same circumferential position as the upper flame hole 13, the outlet portion of the outer end of the discharge groove 124 is strongly heated by the flame formed in the upper flame hole 13, and the outlet Boiled spilled juice will burn on the part. Therefore, in the present embodiment, the discharge groove 124 is formed on the concave surface 121a so as to be positioned at a circumferential position that falls within the width W of the space between the predetermined upper flame holes 13 and 13 adjacent in the circumferential direction. . According to this, the outlet part of the discharge groove 124 is not heated so strongly by the flame formed in the upper flame hole 13, and the boiling of the spilled juice can be suppressed.

  The bottom surface of the outlet portion is provided with a downward gradient toward the outside in the radial direction so that the simmered juice does not stay at the outlet portion of the discharge groove 124. In the present embodiment, four discharge grooves 124 are formed at 90 ° intervals in the circumferential direction, but the number of discharge grooves 124 is not limited to this.

  If the discharge groove 124 is provided so as to be within the width W of the space between the upper flame holes 13 and 13 as described above, the boiled juice discharged from the discharge groove 124 is located at the same circumferential position as the lower flame hole 14. Fall. Therefore, boiled juice may be applied to the opening of the lower flame hole 14 with respect to the outer peripheral surface of the peripheral wall 122 of the burner head 12.

  Therefore, in the present embodiment, the flange portion 123 extends outward in the radial direction from the vertical cylindrical surface C that is concentric with the burner head 12 and passes through the lower end of the opening of the lower flame hole 14. According to this, the falling position of the boiled juice discharged from the discharge groove 124 is radially outward from the cylindrical surface C, that is, radially outward from the lower end of the opening of the lower flame hole 14, and lower flame It is possible to prevent the boiling juice from being applied to the opening of the hole 14.

  As mentioned above, although embodiment was described with reference to drawings to this invention, this invention is not limited to this. For example, in the above-described embodiment, the present invention is applied to a stove burner including a child burner of a parent-child burner, but the present invention can be similarly applied to a normal stove burner that is not a parent-child burner.

DESCRIPTION OF SYMBOLS 1 ... Child burner (stove burner), 12 ... Burner head, 121 ... End wall part, 121a ... Concave surface, 122 ... Peripheral wall part, 123 ... Gutter part, 124 ... Discharge groove, 13 ... Upper flame hole, 14 ... Lower flame Hole: C: Cylindrical surface passing through the lower end of the lower flame hole, W: Width of the space between the upper flame holes.

Claims (1)

A zigzag with a cylindrical burner head whose upper end is closed by an end wall, and the upper and lower flame holes for jetting air-fuel mixture are displaced in the circumferential direction at the upper and lower parts of the peripheral wall of the burner head A burner for a stove formed in a plurality of shapes, wherein the outer peripheral surface of the peripheral wall portion of the burner head is formed into a tapered surface whose diameter is reduced upward, and the peripheral wall of the burner head is formed on the outer periphery of the end wall portion of the burner head In what is provided with a collar portion projecting radially outward from the upper end of the outer peripheral surface of the portion,
The upper surface of the end wall portion of the burner head is formed as a concave surface that is recessed downward, and the concave surface is positioned at a circumferential position that falls within the width of the space between predetermined upper flame holes adjacent in the circumferential direction. A discharge groove reaching the outer peripheral surface of the buttocks is formed to discharge the boiled spilled juice that has fallen on the concave surface,
A burner for a stove, characterized in that the flange portion projects radially outward from a vertical cylindrical surface concentric with the burner head, which passes through the lower end of the opening of the lower flame hole with respect to the outer peripheral surface of the peripheral wall portion of the burner head.

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