JP2017116193A - Cooking stove burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent intrusion of boiling-over soup into a recessed hole in a cooking stove burner which includes an annular burner cap 4 placed on a burner body 3, and an annular burner cover 8 covering a top face of the burner cap through a vertical clearance, and further has an outer peripheral cylindrical portion 81 formed on an outer peripheral edge portion of the burner cover for closing a clearance between the burner cap and the burner cover over the whole periphery, and in which a claw portion 83 disposed on the burner cover, is press-fitted into the recessed hole 45 formed on the top face of the burner cap to fix the burner cover.SOLUTION: A claw portion 83 is disposed on a lower face part at a radial inner part with respect to an outer peripheral edge portion of a burner cover 8, and a recessed hole 45 is formed on a top face part of the burner cap 4 corresponding to the claw portion 83. The recessed hole 45 is formed on a boss portion 46 disposed on the top face of the burner cap 4 and raised upward.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a stove burner provided in a gas stove.

  The stove burner includes an annular burner cap that is placed on the burner body, and an annular wall that abuts the other on one of the upper surface outer peripheral portion of the burner body and the lower surface outer peripheral portion of the burner cap. A plurality of blisters are formed in the wall at intervals in the circumferential direction.

  By the way, if the spillage falls to the portion near the outer periphery of the upper surface of the burner cap that is close to the flame opening during combustion, the portion of the burner cap where the spillage has dropped is rapidly cooled, which adversely affects the durability of the burner cap. Therefore, conventionally, a stove burner including an annular burner cover that covers the upper surface of the burner cap with a gap in the vertical direction is also known (see, for example, Patent Document 1).

  However, even in this case, boiled spills falling on the burner cover may wrap around from the outer peripheral edge of the burner cover to the lower surface of the burner cover and fall to the portion near the outer periphery of the upper surface of the burner cap. Therefore, it is not possible to reliably prevent the spilling from falling on the portion near the outer periphery of the upper surface of the burner cap.

  In order to solve such a problem, the applicant of the present application previously described in Japanese Patent Application No. 2014-246002, an outer peripheral cylinder portion that closes the gap between the burner cap and the burner cover over the entire circumference in the outer peripheral edge portion of the burner cover. Suggested what formed. According to this, it is possible to prevent the boiled spill falling on the burner cover from flowing from the outer peripheral edge of the burner cover to the lower surface of the burner cover, and the boiled spilled along the lower surface of the burner cover and the outer periphery of the upper surface of the burner cap. It is possible to prevent falling to the side portion.

  Further, in the above-mentioned prior application, a claw portion protruding downward is formed at the lower end of the outer peripheral cylindrical portion so as to prevent the burner cover from being forgotten or lost, and a claw portion is formed on the outer peripheral portion of the upper surface of the burner cap. Is formed so that the burner cover cannot be easily removed from the burner cap. However, in this case, boiled spills that fall on the burner cover may enter the concave hole through the outer peripheral cylindrical portion. And the press-fit fixing location of a nail | claw part will corrode by the spillage collected in the concave hole, and the fixing force of a burner cover will weaken.

JP 2014-77593 A

  In view of the above points, the present invention has an object to provide a stove burner that improves the above-mentioned prior application and prevents the fixing force of the burner cover from being weakened due to the effect of spilling. Yes.

  In order to solve the above-described problems, the present invention includes an annular burner cap that is placed on a burner body, and an annular wall that abuts the other of the upper surface outer periphery of the burner body and the lower surface outer periphery of the burner cap. And a burner cover in which a plurality of flame openings are formed on the annular wall at intervals in the circumferential direction, and the annular burner cover covers the upper surface of the burner cap with a gap in the vertical direction. In the outer peripheral edge portion of the burner cover, an outer peripheral cylindrical portion that closes the gap between the burner cap and the burner cover over the entire circumference is formed, and is radially inward from the outer peripheral edge portion of the burner cover. A claw portion projecting downward is provided on the lower surface portion, and a concave hole is formed in the upper surface of the burner cap to press-fit the claw portion.

  According to the present invention, since the claw portion is provided in the portion where the spillage is not radially inward from the outer peripheral edge portion of the burner cover, the spillage does not enter the concave hole into which the claw portion is press-fitted. Therefore, the press-fitting and fixing portion of the claw portion does not corrode due to spillage accumulated in the concave hole, and the fixing force of the burner cover can be prevented from being weakened due to the spillage.

  There is a possibility that a slight gap is formed between the upper surface of the burner cap and the lower end of the outer peripheral cylindrical portion, and the spillage may enter from there. Therefore, it is desirable that the concave hole is formed in a boss portion that is raised on the upper surface of the burner cap. According to this, even if spillage enters from the gap between the upper surface of the burner cap and the lower end of the outer peripheral cylindrical portion, the spillage does not flow up to the upper surface of the boss portion raised upward, The spillage can be reliably prevented.

The perspective view which shows the stove burner of embodiment of this invention. Sectional drawing cut | disconnected by the II-II line | wire of FIG. Sectional drawing cut | disconnected by the III-III line | wire of FIG. (A) The perspective view seen from diagonally downward of the burner cover of the stove burner of embodiment, (b) The perspective view seen from diagonally upward of the burner cap of the stove burner of embodiment.

  1 to 3, TP is a top plate of a gas stove, and the stove burner 1 according to the embodiment of the present invention is arranged facing a burner opening TPa opened on the top plate TP. The stove burner 1 includes a burner body 3 that extends upward from the downstream end of the mixing tube 2 and is inserted into the burner opening TPa, and an annular burner cap 4 that is placed on the burner body 3. The stove burner 1 is provided with a pan bottom temperature sensor 5 projecting upward through the inner circumferential space of the burner cap 4 and an ignition electrode 6 facing the target portion 4a projecting at one location around the burner cap 4. ing.

  The burner body 3 is formed of a hollow ring with an inner cylinder 31 and an outer cylinder 32. An inner bending flange portion 33 is formed at the upper end portion of the outer cylinder 32. Further, a cover ring 7 that covers the burner opening TPa from above is externally inserted into the outer cylinder 32.

  A seal tube portion 41 that is fitted into the upper end portion of the inner tube 31 is suspended from the inner peripheral portion of the burner cap 4. Further, an annular wall 42 is provided on the outer peripheral portion of the lower surface of the burner cap 4 so as to come into contact with the upper surface of the inner bending flange portion 33 of the outer cylinder 32 that is the outer peripheral portion of the upper surface of the burner body 3. A plurality of flame openings 43 each having a groove are formed in the annular wall 42 at intervals in the circumferential direction, and an air-fuel mixture (mixed gas of fuel gas and primary air) from the mixing pipe is formed from these flame openings 43. It blows out and burns. The flame port 43 includes a large flame port 43a having the largest vertical dimension, a small flame port 43b having the smallest vertical dimension, and an intermediate flame port 43c intermediate in the vertical dimension between the large flame port 43a and the small flame port 43b. There are three types. In addition, it is also possible to project an annular wall in contact with the outer peripheral portion of the lower surface of the burner cap 4 on the outer peripheral portion of the upper surface of the burner body 3 to form a flame opening.

  At one place on the lower surface of the burner cap 4, there is provided a projecting portion 44 for phasing that engages with a recess 33 a formed at one place in the circumferential direction of the inner bending flange portion 33. Further, the burner cap 4 is made of an aluminum alloy such as the ADC 12 to reduce the weight.

  By the way, when the spilled portion falls to the upper peripheral portion of the burner cap 4 which is close to the flame opening 43 and becomes hot during combustion, the portion of the burner cap 4 where the spilled portion is dropped is rapidly cooled, and the durability of the burner cap 4 is adversely affected. Reach. Therefore, a burner cover 8 made of an annular plate that covers the upper surface of the burner cap 4 with a gap in the vertical direction is provided to prevent spilling from falling on the upper surface of the burner cap 4. Note that the burner cover 8 is made of stainless steel, giving a sense of quality.

  Here, if only the burner cover 8 is provided, the spilled liquid that has fallen on the burner cover 8 may wrap around from the outer peripheral edge of the burner cover 8 to the lower surface of the burner cover 8, and fall on the outer periphery of the upper surface of the burner cap 4. There is. Therefore, an outer peripheral cylindrical portion 81 extending downward is formed on the outer peripheral edge portion of the burner cover 8, and the outer peripheral cylindrical portion 81 is seated on the outer peripheral portion of the upper surface of the burner cap 4, and between the burner cap 4 and the burner cover 8. Is closed over the entire circumference by the outer peripheral cylinder portion 81. According to this, it is possible to prevent the boiled spill falling on the burner cover 8 from flowing from the outer peripheral edge of the burner cover 8 to the lower surface of the burner cover 8 by the outer peripheral cylinder portion 81, and the boiled spilled along the lower surface of the burner cover 8. It is possible to prevent the burner cap 4 from falling to a portion near the outer periphery of the upper surface.

  Further, an inner peripheral cylindrical portion 82 extending downward is also formed on the inner peripheral edge of the burner cover 8. This inner peripheral cylinder part 82 is located above the seal cylinder part 41 of the burner cap 4, and the spilled liquid that has fallen onto the burner cover 8 and has flowed to the inner peripheral side passes along the inner cylinder part 82 and is sealed. It falls to the inner periphery of the cylinder part 41.

  Further, in the present embodiment, as clearly shown in FIG. 4, a claw portion 83 that protrudes downward is provided on the lower surface portion radially inward from the outer peripheral edge portion of the burner cover 8, and the claw portion 83 is provided on the upper surface of the burner cap 4. A concave hole 45 into which the portion is press-fitted is formed. More specifically, an annular plate 84 having an outer diameter smaller than the outer diameter of the burner cover 8 is attached to the lower surface of the burner cover 8, and is lowered downward in three circumferential directions on the outer peripheral edge of the annular plate 84. A bent tongue-like claw portion 83 is provided. In addition, positioning portions 84 a that abut the outer peripheral surface of the inner peripheral cylindrical portion 82 of the burner cover 8 and center the annular plate 84 with respect to the burner cover 8 are provided at three positions in the circumferential direction of the inner peripheral edge of the annular plate 84. It has been. Therefore, the three claw portions 83 are positioned on the circumference of a predetermined diameter concentric with the burner cover 8.

  In addition, the upper surface of the burner cap 4 is formed with concavities 45 that are concentrically located at three locations on the circumference of the same diameter as the predetermined diameter, and have a concave hole 45 that is slightly smaller in diameter than the width of the claw portion 83. Yes. The burner cover 8 cannot be easily removed from the burner cap 4 by press-fitting each claw 83 into each concave hole 45. Thereby, it is possible to prevent the burner cover 8 from being forgotten or lost. Further, since the claw portion 83 is provided in a portion where the spillage is not radially inward from the outer peripheral edge portion of the burner cover 8, the spillage does not enter the recessed hole 45 into which the claw portion 83 is press-fitted. Accordingly, the press-fitting and fixing portion of the claw portion 83 is not corroded by the spilled water accumulated in the concave hole 45, and the fixing force of the burner cover 8 can be prevented from being weakened due to the spilled effect.

  There is a possibility that a slight gap is formed between the upper surface of the burner cap 4 and the lower end of the outer peripheral cylindrical portion 81 of the burner cover 8, and the spillage may enter from there. Therefore, in the present embodiment, each concave hole 45 is formed in each boss portion 46 that rises upward provided on the upper surface of the burner cap 4. As a result, even if the spilled portion enters from the gap between the upper surface of the burner cap 4 and the lower end of the outer cylindrical portion 81, the spilled portion does not flow up to the upper surface of the boss portion 46 swelled upward, and enters the concave hole 45. Can surely prevent the invasion of spills.

  Further, in the present embodiment, on the upper surface of the burner cap 4, except for the boss portion 46, an inclined portion 47 inclined downward from the seating portion of the outer peripheral cylindrical portion 81 toward the radially inward direction is formed. According to this, even if boiled spilled from the gap between the upper surface of the burner cap 4 and the lower end of the outer peripheral cylinder part 81, this boiled down flows down the inclined part 47 and falls from the seal cylinder part 41, Boiled spillage does not collect on the upper surface of the burner cap 4.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the above embodiment, the claw portion 83 is formed on the annular plate 84 attached to the lower surface of the burner cover 8, but the claw portion 83 is integrally formed on the burner cover 8 by using the burner cover 8 as a die-cast product. Is also possible.

DESCRIPTION OF SYMBOLS 1 ... Combustor, 3 ... Burner body, 4 ... Burner cap, 42 ... Annular wall, 43 ... Flame port, 45 ... Recessed hole, 46 ... Boss part, 8 ... Burner cover, 81 ... Outer cylinder part, 83 ... Claw part .

Claims (2)

An annular burner cap placed on the burner body is provided, and an annular wall that abuts the other is provided on one of the outer peripheral portion of the upper surface of the burner body and the outer peripheral portion of the lower surface of the burner cap. A stove burner in which a plurality of flame openings are formed at intervals in the direction, and includes an annular burner cover that covers the upper surface of the burner cap with a gap in the vertical direction.
On the outer peripheral edge of the burner cover, an outer peripheral cylindrical portion that closes the gap between the burner cap and the burner cover over the entire circumference is formed,
A stove portion that protrudes downward is provided on the lower surface portion radially inward of the outer peripheral edge portion of the burner cover, and a concave hole is formed on the upper surface of the burner cap to press-fit the claw portion. Burner. 2. The stove burner according to claim 1, wherein the concave hole is formed in an upward boss portion provided on an upper surface of the burner cap.

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