JP2019168195A - Gas cooking stove - Google Patents

Abstract

To provide a gas cooking stove in which an upper surface of a peripheral part of an opening 11 for a burner of a top plate 1 comprises an annular burner ring 4 installed through an annular packing 5 to cover a clearance between a peripheral edge of an opening 11 for a burner and the burner ring 4; and a lower ring 6 arranged to hold and press the peripheral edge part of the opening 11 for the burner at a lower surface of the top plate 1, the burner ring 4 includes a top plate abutting part 42 at a lower end of an outer peripheral edge part and a recess part 43 recessed upward at an inner portion in a radial direction rather than the top plate abutting part 42 where the packing 5 is stored, and a part of the packing 5 enters between the top plate abutting part 42 and the top plate 1 to prevent the burner ring 4 from being floated.SOLUTION: A burner ring 4 is provided with a positioning part 45 protruded from an outer peripheral wall part 43a of a recess part 43 in an inward radial direction and abutted against an outer peripheral surface of a packing 5. A lower surface of a part near an inside radial direction of the positioning part 45 is positioned at an upper location than that of a top plate abutment part 42.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a gas stove including a stove burner exposed on a top plate through a burner opening established in the top plate.

  Conventionally, as this type of gas stove, an annular packing is provided on the upper surface of the peripheral edge of the burner opening on the top plate so as to cover the gap between the peripheral edge of the burner opening and the portion inserted through the burner opening of the stove burner. An annular burner ring placed through the lower plate, and a lower ring arranged on the lower surface of the top plate so that the peripheral edge of the top plate burner opening is narrowed from above and below with the burner ring Is known (see, for example, Patent Document 1). In this structure, the burner ring has a top plate contact portion at the lower end of the outer peripheral edge that contacts the top surface of the top plate, and a recess that is recessed upward in the radially inner portion of the top plate contact portion. The packing is accommodated in the recess.

  However, in the above-mentioned conventional example, due to the displacement of the packing, a part of the packing enters between the top plate contact portion of the burner ring and the top plate, and the burner ring is mounted in a floating state on the top plate. May end up. In this case, the burner ring approaches the stove burner's flame hole and becomes more susceptible to heat from the flame formed in the flame hole, facilitating paint deterioration on the upper surface of the burner ring, or burning of simmered juice to the burner ring Inconveniences such as promotion are generated.

JP 2008-249178 A (FIG. 5)

  This invention makes it the subject to provide the gas stove which enabled it to prevent that a burner ring was mounted | worn in the state which floated on the top plate in view of the above point.

  In order to solve the above problems, the present invention is a gas stove comprising a stove body, a top plate that covers the top surface of the stove body, and a stove burner that is exposed on the top plate through a burner opening established in the top plate. The top plate is mounted on the upper surface of the peripheral edge of the burner opening via an annular packing so as to cover the gap between the peripheral edge of the burner opening and the portion inserted through the burner opening of the stove burner. The burner ring is provided with an annular burner ring and a lower ring disposed on the lower surface of the top plate so that the peripheral edge of the opening for burner of the top plate is narrowed from above and below with the burner ring. From the top plate contact portion at the lower end of the outer peripheral edge that contacts the upper surface of the plate, the recess that is recessed upward in the radially inner portion of the top plate contact portion, and the outer peripheral wall portion of the recess Projecting radially inward to the outer peripheral surface of the packing And a positioning portion that contacts the lower surface of the radially inner end side of the portion of the positioning unit may be located above the top plate contact portion.

  According to the present invention, the positioning portion comes into contact with the outer peripheral surface of the packing, so that the packing is positioned in a state where the packing is separated radially inward from the top plate contact portion of the burner ring. Therefore, it is possible to prevent a part of the packing from entering between the top plate contact portion and the top plate. However, if the lower surface of the positioning part is in contact with the top plate, the part of the packing that tends to protrude radially outward by the compression of the packing bites between the lower surface of the positioning part and the top plate, and the burner ring It may be pushed up. On the other hand, in the present invention, since the lower surface of the portion near the radially inner end of the positioning portion is located above the top plate contact portion, the lower surface of the portion near the radially inner end of the positioning portion and the ceiling A gap is secured between the plate and the protruding portion at the lower portion of the packing that protrudes radially outward by the compression of the packing. As a result, the burner ring is not pushed up strongly by the overhanging portion at the bottom of the packing, and it is possible to prevent part of the packing from entering between the top plate abutting portion and the top plate. It can be prevented from being mounted in a floating state on the top board.

  By the way, in a gas stove, generally, five virtues having an annular five virtue frame surrounding the burner ring are placed on the top plate, and radially inward from the five virtue frames at a plurality of circumferential positions on the outer peripheral edge of the burner ring. A plurality of circumferentially projecting protrusions are provided in the radial direction so as to be able to position the five virtues at a predetermined phase. In this case, the recessed portion approaches the packing, and the packing easily enters between the radially inner end of the recessed portion and the top plate.

  Therefore, the positioning portion is provided so as to protrude radially inward from the portions located on both sides in the circumferential direction of the respective recessed portions of the outer peripheral wall portion of the recessed portion, and the radially inner end of the positioning portion is set to the diameter of the recessed portion. It is desirable that the positioning portion be provided so as to be positioned radially inward from the inner end in the direction or to protrude radially inward from a portion matching each recessed portion of the outer peripheral wall portion of the recess. According to this, the packing can be positioned in the vicinity of the recessed portion so as to be positioned radially inward from the radially inner end of the recessed portion, and between the radially inner end of the recessed portion and the top plate. It is possible to reliably prevent the packing from entering.

  In the present invention, it is desirable that an annular groove is formed on the outer peripheral surface of the packing, and the radially inner end of the positioning portion is formed to engage with the groove on the outer peripheral surface of the packing. According to this, when performing the setting operation of the packing in the recess with the burner ring in an inverted posture with the upper surface facing downward, by engaging the radially inner end of the positioning portion with the groove of the packing Even if the burner ring is in a normal posture with its upper surface facing upward, the packing does not fall off, and the assembly workability is improved.

The perspective view of the principal part of the gas stove of embodiment of this invention. FIG. 2 is a cut side view taken along line II-II in FIG. 1. The perspective view seen from diagonally downward of the separation state of the burner ring provided in the gas stove of embodiment, packing, and a lower ring. The expanded sectional view of the assembly state cut | disconnected by the IV-IV line | wire of FIG. The perspective view seen from the diagonal lower side of the burner ring and packing of other embodiment. The expanded sectional view of the assembly state cut | disconnected by the VI-VI line of FIG.

  1 and 2, reference numeral 1 denotes a top plate provided in a gas stove according to an embodiment of the present invention. The top plate 1 includes a glass top plate main body 1a and a sheet metal back plate 1b attached to the lower surface of the top plate main body 1a. Further, the gas stove includes a stove burner 2 exposed on the top plate 1 through the burner opening 11 established in the top plate 1 and a virtu 3 placed on the top plate 1 so as to surround the burner opening 11. I have.

  The stove burner 2 is placed on the mixing tube 21, an inner and outer double cylindrical burner body 22 that rises upward from the downstream end of the mixing tube 21 and is inserted into the burner opening 11, and the burner body 22. An annular burner head 23 is provided, and an air-fuel mixture (mixed gas of fuel gas and primary air) generated in the mixing tube 21 is ejected from a plurality of flame holes 24 formed in the outer peripheral portion of the burner head 23 and burned. To do. In addition, each cooker 2 is provided with a pan bottom temperature sensor 25 that comes into contact with the bottom surface of the cooking container placed on Gotoku 3, an ignition electrode 26, and a thermocouple 27 that is a flame detection element.

  The upper surface of the peripheral edge of each burner opening 11 of the top plate 1 covers a gap between the peripheral edge of the burner opening 11 and the burner body 22 that is a portion inserted through the burner opening 11 of the stove burner 2. An annular burner ring 4 is placed via an annular packing 5. Further, a lower ring 6 is disposed on the lower surface of the top plate 1 so as to narrow the peripheral edge of the burner opening 11 of the top plate 1 from above and below with the burner ring 4.

  Referring to FIGS. 3 and 4, drooping piece portions 41 extending downward are provided at a plurality of circumferential positions on the inner peripheral edge of the burner ring 4, and An upright piece 61 that extends is provided. The hanging piece 41 is formed with an engagement hole 41a, the standing piece 61 is formed with a convex portion 61a projecting radially inward, and the engaging hole 41a has a convex portion from radially outward. The burner ring 4 and the lower ring 6 are connected by engaging 61a. Further, at a plurality of locations of the lower ring 6, leaf spring portions 62 inclined obliquely upward are provided. In the state where the burner ring 4 and the lower ring 6 are connected as described above, the leaf spring 62 is pressed against the lower surface of the top plate 1 and bent, and the burner ring 4 is bent by the bending reaction force of the leaf spring 62. The peripheral edge of the burner opening 11 of the top plate 1 is narrowed from above and below by the burner ring 4 and the lower ring 6, and the packing 5 is compressed.

  The burner ring 4 houses a top plate contact portion 42 at the lower end of the outer peripheral edge that contacts the upper surface of the top plate 1, and a packing 5 that is recessed upward in the radially inner portion of the top plate contact portion 42. The recess 43 is provided. In the present embodiment, the burner ring 4 is made of sheet metal, and has a folded portion that is folded radially inward from the top plate contact portion 42, and this folded portion becomes the outer peripheral wall 43 a of the recess 43. ing.

  The five virtues 3 have an annular five virtue frame 31 that surrounds the burner ring 4 and a plurality of five virtue claws 32 that are radially fixed to the five virtue frames 31. Further, two circumferentially projecting portions 33 projecting radially inward from the five virtue frames 31 are formed integrally with the five virtue claws 32 of the relevant portions. Further, recessed portions 44 that are recessed inward in the radial direction are provided at two locations in the circumferential direction of the outer peripheral edge portion of the burner ring 4. Then, by engaging the protrusion 33 of the virtues 3 with the recessed portion 44 of the burner ring 4, the virtues 3 can be positioned at a predetermined normal phase. If Gotoku 3 is a normal phase, the Gotoku claw 32 is present in the same direction as the portion of the burner head 23 where the large flame hole 24 does not exist, and the flame formed in the large flame hole 24 touches the Gotoku claw 32. Absent.

  By the way, a part of the packing 5 may enter between the top plate contact portion 42 of the burner ring 4 and the top plate 1 due to the displacement of the packing 5. In this case, the burner ring 4 is mounted in a state of floating on the top plate 1, the burner ring 4 approaches the flame hole 24 of the stove burner 2, and heat from the flame formed in the flame hole 24 is easily received, Deterioration of the paint on the upper surface of the burner ring 4 is promoted, and the burning of the simmered juice on the burner ring 4 is promoted.

  Therefore, the burner ring 4 is provided with a positioning portion 45 that protrudes radially inward from the outer peripheral wall portion 43 a of the concave portion 43 and contacts the outer peripheral surface of the packing 5. According to this, the packing 5 is positioned in a state where it is separated from the top plate contact portion 42 of the burner ring 4 inward in the radial direction. Therefore, it is possible to prevent a part of the packing 5 from entering between the top plate contact portion 42 and the top plate 1. However, if the lower surface of the positioning portion 45 is in contact with the top plate 1, the portion of the packing 5 that tends to protrude radially outward by the compression of the packing 5 is between the lower surface of the positioning portion 45 and the top plate 1. The burner ring 4 may be pushed up by biting. Therefore, the lower surface of at least the portion near the radially inner end of the positioning portion 45 is positioned above the top plate contact portion 42. Therefore, a gap is secured between the lower surface of the portion near the radially inner end of the positioning portion 45 and the top plate 1 to receive the projecting portion 5a at the lower portion of the packing projecting radially outward by the compression of the packing 5. . As a result, the burner ring 4 is not pushed up strongly by the overhanging portion 5a at the lower portion of the packing, and it is possible to prevent a part of the packing 5 from entering between the top plate contact portion 42 and the top plate 1. Thus, it is possible to prevent the burner ring 4 from being mounted on the top plate 1 in a floating state.

  Here, it is also possible to provide the positioning portion 45 over the entire circumference of the outer peripheral wall portion 43 a of the concave portion 43. However, when the recessed portion 44 is provided in the burner ring 4 as described above, the recessed portion 44 approaches the packing 5, and the packing easily enters between the radially inner end of the recessed portion 44 and the top plate 1. Therefore, in the present embodiment, a tongue-shaped positioning portion 45 that protrudes inward in the radial direction from portions located on both sides in the circumferential direction of the respective recessed portions 44 of the outer peripheral wall portion 43a of the concave portion 43 is provided. The radially inner end of the positioning portion 45 is positioned more radially inward than the radially inner end of the recessed portion 44. According to this, the packing 5 can be positioned in the vicinity of the recessed portion 44 so as to be positioned radially inward from the radially inner end of the recessed portion 44, and the radially inner end of the recessed portion 44 and the top plate It is possible to reliably prevent the packing 5 from entering between.

  In addition, as in the embodiment shown in FIGS. 5 and 6, the positioning portion 45 may be provided so as to protrude radially inward from a portion that matches the recessed portion 44 of the outer peripheral wall portion 43 a of the recessed portion 43. Even in this case, the packing 5 can be positioned in the vicinity of the recessed portion 44 so as to be positioned radially inward from the radially inner end of the recessed portion 44, and the radially inner end of the recessed portion 44 and the top plate 1 can be positioned. It is possible to reliably prevent the packing 5 from entering between.

  In the above embodiment, the annular groove 51 is formed on the outer peripheral surface and the inner peripheral surface of the packing 5. Then, the radially inner end of the positioning portion 45 is formed to engage with the groove 51 on the outer peripheral surface of the packing 5. According to this, when performing the setting work of the packing 5 to the recess 43 with the burner ring 4 in an inverted posture with the upper surface facing downward, the radial direction of the positioning portion 45 is set in the groove 51 on the outer peripheral surface of the packing 5. By engaging the inner end, the packing 5 does not fall off even when the burner ring 4 is in a normal posture with the upper surface facing upward, and the assembly workability is improved.

  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 burner ring 4 is made of sheet metal, but it can also be a cast or forged product. In this case, the positioning portion 45 may be formed in a rib shape reaching the upper surface of the concave portion 43 instead of the tongue piece shape.

DESCRIPTION OF SYMBOLS 1 ... Top plate, 11 ... Opening for burners, 2 ... Combustor, 3 ... Gotoku, 31 ... Gotoku frame, 33 ... Projection part, 4 ... Burner ring, 42 ... Top plate contact part, 43 ... Recessed part, 43a ... Recessed part , 44 .. recessed portion, 45 .. positioning portion, 5... Packing, 51 .. groove, 6.

Claims (4)

A gas stove equipped with a burner exposed on the top plate through the burner opening established in the top plate, and inserted into the upper surface of the peripheral edge of the burner opening on the top plate through the peripheral edge of the burner opening and the burner opening of the stove burner The annular burner ring that is placed via an annular packing so as to cover the gap between the burner and the peripheral portion of the burner opening of the top plate between the burner ring and the lower surface of the top plate. With a lower ring arranged so as to narrow pressure from above and below,
The burner ring includes a top plate contact portion at the lower end of the outer peripheral edge that contacts the top surface of the top plate, a recess that is recessed upward in the radially inner portion of the top plate contact portion, and a recess A positioning portion that protrudes radially inward from the outer peripheral wall portion and contacts the outer peripheral surface of the packing, and a lower surface of a portion near the radially inner end of the positioning portion is above the top plate contact portion. Gas stove characterized by being located.   The gas stove according to claim 1, wherein five virtues each having an annular five virtue frame surrounding the burner ring are placed on the top plate, and the diameter from the five virtue frames is set at a plurality of circumferential positions on the outer peripheral edge of the burner ring. In which a plurality of circumferentially projecting protrusions engage with each other in a radially inwardly recessed portion that is engaged with a plurality of circumferentially projecting portions, and located on both sides in the circumferential direction of each recessed portion of the outer peripheral wall portion of the recessed portion The positioning portion is provided so as to protrude radially inward from the portion, and the radially inner end of the positioning portion is positioned more radially inward than the radially inner end of the recessed portion. Gas stove.   The gas stove according to claim 1, wherein five virtues each having an annular five virtue frame surrounding the burner ring are placed on the top plate, and the diameter from the five virtue frames is set at a plurality of circumferential positions on the outer peripheral edge of the burner ring. A plurality of circumferentially projecting protrusions that are engaged in a radially inward protruding portion that is provided in a radially inwardly protruding portion that is provided in a radially inward direction. A gas stove, wherein the positioning portion is provided so as to protrude inward. The annular groove is formed in the outer peripheral surface of the packing, and the radially inner end of the positioning portion is formed to engage with the groove of the outer peripheral surface of the packing. The gas stove according to any one of claims.

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