Cooking stove burner

Abstract

To join a lower plate member and an upper plate member of a burner cap without damaging an aesthetic appearance.SOLUTION: This burner cap includes a plate-like lower plate member 20 having a plurality of stationary parts 20a to be fixed to a top part of a burner head 13, and an upper plate member 21 having a plurality of projections 21d extending from a plate-like plane part 21a to be overlapped on the lower plate member by installing a burner cap 16 over the top part of the burner head to be mounted on a burner body of a cooking stove burner. Then, the upper plate member is sandwiched by the plane part of the upper plate member and the projections by folding the projections toward the lower plate member in a state in which the plane part of the upper plate member is overlapped on the lower plate member. In this way, welding becomes unnecessary for joining because the lower plate member and the upper plate member of the burner cap are joined due to sandwiching by folding of the projections, and an aesthetic appearance can be improved more than joining by welding because there is no weld trace on the surface of the upper plate member.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a stove burner in which a burner cap is installed to cover the top of a burner head placed on a burner body. [Background technology]

[0002] A common type of stove burner is one in which a burner head is mounted on a burner body having a mixing chamber to which a mixture of fuel gas and air is supplied, and multiple flame ports communicating with the mixing chamber are defined circumferentially on the outer surface of the burner head, and the mixed gas flowing out from the flame ports is burned to heat a cooking vessel such as a pot placed above the stove burner. Also known is a stove burner that has a burner cap installed over the burner head to prevent boil-over liquid from boiling over from the cooking vessel and directly contacting the high-temperature burner head.

[0003] Such burner caps are often composed of a plate-shaped lower plate member having multiple fixing portions that are fixed to the top of the burner head, and a plate-shaped upper plate member that is overlapped and joined to the lower plate member (for example, Patent Document 1), and the lower plate member and the upper plate member are generally joined by welding. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-32516 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the case of a stove burner in which the lower plate member and the upper plate member of the burner cap are joined by welding as described above, welding marks can appear on the surface of the upper plate member, and since the welding marks are visible on the surface of the burner cap, which is easily noticeable to users, there is a problem that the aesthetics are marred. Furthermore, in order to make the welding marks on the surface of such upper plate member less noticeable, a careful polishing process must be added during manufacturing, and even after polishing, slight welding marks may remain.

[0006] This invention has been made in response to the above-mentioned problems in the conventional technology, and aims to provide a technology that makes it possible to join the lower plate member and the upper plate member of a burner cap without spoiling the aesthetic appearance of the stove burner. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the stove burner of the present invention employs the following configuration: <First aspect> A burner body has a mixing chamber to which a mixture of fuel gas and air is supplied, and a burner head is mounted on the burner body. By doing so, a plurality of flame ports communicating with the mixing chamber are defined in the circumferential direction of the outer peripheral surface of the burner head, and a burner cap is installed to cover the top of the burner head. The burner cap is a plate-shaped lower plate member having a plurality of fixing portions fixed to an upper portion of the burner head; an upper plate member having a plurality of protrusions extending from a plate-like flat portion that overlaps the lower plate member; Equipped with With the flat surface of the upper plate member superimposed on the lower plate member, the protrusion is bent toward the lower plate member, thereby sandwiching the lower plate member between the flat surface of the upper plate member and the protrusion. It is characterized by:

[0008] In this first type of stove burner, the lower plate member and the upper plate member of the burner cap are joined by clamping them together by bending the protrusions, so welding is not required for the joining and no welding marks are left on the surface of the upper plate member, which improves the appearance compared to joining by welding and simplifies the polishing process during manufacturing.

[0009] <Second aspect> In the stove burner of the first aspect, the lower plate member has a lower plate through-hole formed substantially at the center thereof and a lower plate tubular portion extending downward from the periphery of the lower plate through-hole, the upper plate member has an upper plate through-hole formed through approximately the center of the flat surface portion, and an upper plate tubular portion extending downward from the flat surface portion around the upper plate through-hole and fitted inside the lower plate tubular portion, The plurality of protrusions extending downward are arranged at intervals in the circumferential direction on the lower end of the upper cylindrical plate portion, With the flat surface of the upper plate member overlapped on the lower plate member and the upper plate member fitted inside the lower plate member, the protrusion is bent radially outward of the upper plate member, whereby the lower plate member is sandwiched between the flat surface of the upper plate member and the protrusion. It is characterized by:

[0010] In this second embodiment of the stove burner, the lower and upper plate members can be aligned by fitting the lower and upper plate members together, preventing misalignment and rattle. Furthermore, the upper plate member makes it difficult for users to see the lower plate member (lower plate member) inside the burner cap (upper plate through-hole), improving the appearance. Furthermore, the protrusion on the lower end of the upper plate member is bent toward the lower plate member and hidden, so the protrusion does not detract from the appearance.

[0011] <Third aspect> In the second aspect of the stove burner, With the flat portion of the upper plate member overlapped on the lower plate member and the upper plate cylindrical portion fitted inside the lower plate cylindrical portion, a notch is formed on both sides of the protrusion at the lower end of the upper cylindrical plate, the notch extending to a position above the lower end of the lower cylindrical plate; The portion of the lower end of the upper cylindrical plate excluding the protrusion and the notch is located at the same height as or below the lower end of the lower cylindrical plate. It is characterized by:

[0012] In this third embodiment of the stove burner, the notches on both sides of the protrusion at the lower end of the upper tubular plate allow for a bending margin for the protrusion from a position above the lower end of the lower tubular plate. This allows the protrusion, bent radially outward from the upper tubular plate, to abut against the lower end surface of the lower tubular plate, firmly securing the lower tubular plate by clamping it between the flat surface and the protrusion. The portion of the lower end of the upper tubular plate excluding the protrusion and the notch (hereinafter referred to as the base portion) can be extended to the same height as or lower than the lower end of the lower tubular plate, thereby hiding the lower plate member (lower tubular portion) from the user inside the burner cap and improving its aesthetic appearance.

[0013] <Fourth aspect> In the stove burner of the second aspect or the third aspect, With the lower plate tubular portion of the lower plate member sandwiched between the flat portion and the protrusion of the upper plate member, the protrusion of the upper plate member and the fixing portion of the lower plate member are positioned on the same straight line in the radial direction of the upper plate tubular portion. It is characterized by:

[0014] When the burner cap is installed above the burner head, for example, if liquid boils over from a cooking vessel and spills onto the burner cap, causing distortion (warping) of the upper plate member due to heat shock, the greater the distance between the protrusion and the fixing part, the greater the tendency for the burner cap to deform. In the stove burner of the fourth aspect, the protrusion and the fixing part are positioned on the same straight line in the radial direction of the upper plate cylindrical part, which minimizes the distance between them, and the force of distortion acting on the protrusion of the upper plate member is easily transmitted to and received by the fixing part fixed to the burner head, making it possible to minimize deformation of the burner cap. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view showing the appearance of a gas stove 1 equipped with a stove burner 10 of this embodiment. [Figure 2] FIG. 2 is a vertical cross-sectional view showing the internal structure of the stove burner 10 of this embodiment. [Figure 3] 1 is a perspective view showing the burner cap 16 of this embodiment in an exploded state before being assembled to the burner head 13. FIG. [Figure 4] 2 is a vertical cross-sectional view showing a state in which a lower plate member 20 and an upper plate member 21 of the burner cap 16 of this embodiment are joined together. FIG. [Figure 5] 1 is a perspective view showing a state in which a lower plate member 20 and an upper plate member 21 of a burner cap 16 of this embodiment are joined together. [Figure 6] 2 is an explanatory diagram showing the positional relationship between an insertion portion 20a and a protrusion 21d in the burner cap 16 of this embodiment. FIG. [Figure 7] 10 is a perspective view showing another example of the burner cap 16 in which the lower cylindrical plate portion 20d and the upper cylindrical plate portion 21c are omitted. FIG. [Figure 8] 10 is a perspective view showing another example of a burner cap 16 in which a rotation stopper 20e is provided at the lower end of a lower cylindrical plate 20d. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] Fig. 1 is a perspective view showing the appearance of a gas stove 1 equipped with a stove burner 10 of this embodiment. The upper surface of the stove body (not shown) of the gas stove 1 is covered with a top plate 2, and the top of the stove burner 10 installed in the stove body protrudes from an insertion hole 3 formed in the top plate 2. Also, a trivet 4 is installed above the stove burner 10 on the top plate 2 for placing cooking vessels such as pots. The trivet 4 has multiple trivet claws 4b (six in the illustrated example) arranged radially and supported by an annular frame 4a surrounding the stove burner 10. The cooking vessel is placed on the trivet claws 4b and heated from below by the stove burner 10.

[0017] The stove burner 10 comprises a burner body 11 serving as a base, a burner head 13 placed on the burner body 11, a ring-shaped burner cap 16 installed to cover the top of the burner head 13, and a temperature sensor 17 protruding from the center of the burner cap 16.

[0018] A burner head 13 mounted on the burner body 11 has a plurality of flame ports 14 opening at predetermined intervals around the periphery of its outer surface. A mixture of fuel gas and air flows out of these flame ports 14, and when ignited by a spark plug (not shown), combustion of the mixture begins, forming a flame outside the flame ports 14. When food boils over from a cooking vessel placed on the trivet 4, the burner cap 16 prevents the boil-over liquid from splashing onto the burner head 13. Furthermore, the temperature sensor 17 measures the temperature of the cooking vessel by having its upper end surface abut against the bottom of the cooking vessel.

[0019] FIG. 2 is a vertical cross-sectional view showing the internal structure of the stove burner 10 of this embodiment. The burner body 11 is formed by airtightly joining two sheets of metal (an outer plate 11a and an inner plate 11b) formed by pressing thin plates such as stainless steel, facing each other. An annular mounting surface 11d is formed at the upper end of the outer plate 11a by bending it inward, and the upper part of the outer plate 11a protrudes above the top plate 2 through the insertion hole 3 (see FIG. 1). The burner head 13 is mounted on this mounting surface 11d. Note that the burner body 11 is not limited to being made of sheet metal, and may be formed by casting (die casting) or the like.

[0020] A mixing pipe 12 that communicates with the mixing chamber 11c extends from the burner body 11, and a nozzle 31 at the tip of a gas supply pipe 30 that supplies fuel gas is installed facing the open end 12a of the mixing pipe 12. The fuel gas injected from the nozzle 31 flows into the mixing pipe 12 together with primary air for combustion that is sucked in from the surrounding area. Then, the fuel gas and primary air are mixed as they pass through the mixing pipe 12, and the mixed gas is supplied to the mixing chamber 11c.

[0021] The burner head 13 is formed in an annular shape by casting or die-casting using a metal material such as aluminum alloy or brass. A cylindrical wall 13a extends downward from the outer edge of the burner head 13, and a cylindrical fitting tube 13b extends downward from the inner edge and is longer than the cylindrical wall 13a. When the burner head 13 is mounted on the burner body 11, the fitting tube 13b is fitted inside the inner plate 11b, and the lower end surface of the cylindrical wall 13a is brought into contact with the annular mounting surface 11d located around the upper opening of the mixing chamber 11c. This covers the upper opening of the mixing chamber 11c with the burner head 13.

[0022] In addition, a plurality of radially transverse grooves 13d are recessed at intervals in the circumferential direction on the lower end surface (the surface abutting the mounting surface 11d) of the cylindrical wall 13a of the burner head 13. The left cylindrical wall 13a in FIG. 2 shows a cross section cut at the position of the grooves 13d, while the right cylindrical wall 13a shows a cross section cut at a position where the grooves 13d are not present. When the burner head 13 is mounted on the burner body 11, the grooves 13d in the cylindrical wall 13a and the mounting surface 11d of the burner body 11 define a plurality of flame ports 14 communicating with the mixing chamber 11c, and the mixed gas in the mixing chamber 11c flows out from the flame ports 14. In the illustrated example, the mounting surface 11d is inclined downward from the outside to the inside in the radial direction, and the lower end surface of the cylindrical wall 13a is similarly inclined.

[0023] The inside of the fitting tube 13b of the burner head 13 is a vertical passage 13c that passes through the stove burner 10 in the vertical direction, and a support pole 18 with a temperature sensor 17 attached to its upper end is inserted into this vertical passage 13c. Also, as will be described in detail later, a ring-shaped burner cap 16 is installed above the burner head 13, and the upper part of the temperature sensor 17 protrudes from a central opening 16a that passes through the center of the burner cap 16. The temperature sensor 17 is movable in the axial direction (vertical direction) of the support pole 18 and is biased upward by a biasing spring (not shown), so that the upper end face of the temperature sensor 17 abuts against the bottom surface of a cooking container placed on the trivet 4.

[0024] FIG. 3 is a perspective view showing the burner cap 16 of this embodiment in a disassembled state before being assembled to the burner head 13. As shown in the figure, the burner cap 16 of this embodiment is composed of two members: a lower plate member 20 and an upper plate member 21. First, the lower plate member 20 is a plate-like member formed by pressing a stainless steel plate or the like, and has multiple insertion portions 20a (three in this embodiment) as fixing portions to be fixed to the upper part of the burner head 13. Three recesses 20b recessed radially inward are provided at predetermined intervals on the approximately circular outer periphery of the illustrated lower plate member 20, and an insertion portion 20a extends downward from each recess 20b. In addition, a substantially circular lower plate through-hole 20c is formed through approximately the center of the lower plate member 20, and the periphery of this lower plate through-hole 20c is bent downward by burring to form an extended lower plate cylindrical portion 20d.

[0025] In this embodiment, the upper surface of the burner head 13 has multiple (three in this embodiment) insertion holes 13e that open upward, corresponding to the insertion portions 20a of the lower plate member 20, and when the burner cap 16 is installed above the burner head 13, the lower plate member 20 is fixed to the burner head 13 by pressing the insertion portions 20a into the insertion holes 13e.

[0026] On the other hand, the upper plate member 21, like the lower plate member 20, is formed by pressing a stainless steel plate or the like. A substantially circular upper plate through-hole 21b is formed through the approximate center of the plate-shaped flat portion 21a that overlaps the lower plate member 20. The periphery of this upper plate through-hole 21b is bent downward by burring to form an upper plate cylindrical portion 21c. In this embodiment, the upper plate cylindrical portion 21c has a smaller diameter than the lower plate cylindrical portion 20d and is fitted inside the lower plate cylindrical portion 20d. Additionally, a plurality of (three in this embodiment) protrusions 21d extend downward from the lower end of the upper plate cylindrical portion 21c and are spaced apart circumferentially. Furthermore, the substantially circular outer periphery of the flat portion 21a is bent downward to form an outer peripheral cylindrical portion 21f.

[0027] FIG. 4 is a longitudinal cross-sectional view showing the state in which the lower plate member 20 and the upper plate member 21 of the burner cap 16 of this embodiment are joined together. FIG. 4 shows an enlarged cross-section taken along a vertical plane passing through the center of the central opening 16a of the burner cap 16, at the position of the protrusion 21d. When the flat portion 21a of the upper plate member 21 is overlapped and joined to the lower plate member 20, the protrusion 21d is bent radially outward (toward the lower plate member 20d) of the upper plate member 21c with the upper plate member 21c fitted inside the lower plate member 20d, as shown in the figure. As a result, the lower plate member 20d of the lower plate member 20 is sandwiched between the flat portion 21a of the upper plate member 21 and the protrusion 21d.

[0028] In this way, in the burner cap 16 of this embodiment, the lower plate member 20 and the upper plate member 21 are joined (prevented from coming loose) by being clamped by bending the protrusions 21d, so welding is not required for joining, and no welding marks are left on the surface of the upper plate member 21, which improves the appearance compared to joining by welding and simplifies the polishing process during manufacturing.

[0029] In particular, in the burner cap 16 of this embodiment, the lower plate member 20 and the upper plate member 21 can be centered by fitting the lower plate cylindrical portion 20d and the upper plate cylindrical portion 21c together, thereby suppressing misalignment and rattle. Moreover, in the central opening 16a of the burner cap 16, the upper plate cylindrical portion 21c makes it difficult for the user to see the lower plate member 20 (lower plate cylindrical portion 20d), thereby improving the aesthetic appearance. Furthermore, the protrusion 21d provided at the lower end of the upper plate cylindrical portion 21c is bent toward the lower plate cylindrical portion 20d and hidden, so the protrusion 21d does not spoil the aesthetic appearance.

[0030] FIG. 5 is a perspective view showing the state in which the lower plate member 20 and the upper plate member 21 of the burner cap 16 of this embodiment are joined together. In FIG. 5, the burner cap 16 is cut along a vertical plane passing through the center of the central opening 16a, so that the engagement between the lower cylindrical plate portion 20d and the upper cylindrical plate portion 21c can be seen. As shown in the figure, with the flat portion 21a of the upper plate member 21 overlapping the lower plate member 20 and the upper cylindrical plate portion 21c engaged inside the lower cylindrical plate portion 20d, notches 21e are formed on both sides of the protrusion 21d at the lower end of the upper cylindrical plate portion 21c, extending to a position above the lower end of the lower cylindrical plate portion 20d. Furthermore, in this embodiment, the portion of the lower end of the upper cylindrical plate portion 21c excluding the protrusion 21d and the notch 21e (hereinafter referred to as the base portion) is located at the same height as the lower end of the lower cylindrical plate portion 20d. The base portion at the lower end of the upper cylindrical plate portion 21c may be located below the lower end of the lower cylindrical plate portion 20d.

[0031] In this way, the burner cap 16 of this embodiment has notches 21e on both sides of the protrusion 21d at the lower end of the upper cylindrical plate portion 21c, ensuring a bending margin for the protrusion 21d from a position above the lower end of the lower cylindrical plate portion 20d. Therefore, the protrusion 21d, which is bent radially outward from the upper cylindrical plate portion 21c, abuts against the lower end surface of the lower cylindrical plate portion 20d, and the lower cylindrical plate portion 20d is firmly fixed by the clamping between the flat portion 21a and the protrusion 21d. As a result, rotation of the upper plate member 21 relative to the lower plate member 20 is suppressed. Furthermore, the base portion of the lower end of the upper cylindrical plate portion 21c, excluding the protrusion 21d and the notch 21e, extends to the same height as or lower than the lower end of the lower cylindrical plate portion 20d. This hides the lower plate member 20 (lower cylindrical plate portion 20d) from view in the central opening 16a, improving aesthetics and reducing the risk of a user touching the inner periphery of the central opening 16a during maintenance or other operations.

[0032] 6 is an explanatory diagram showing the positional relationship between the insertion portions 20a and the protrusions 21d in the burner cap 16 of this embodiment. Fig. 6 shows a bottom view of the burner cap 16 as seen from below (the burner head 13 side). As shown in the figure, the burner cap 16 of this embodiment has the same number of insertion portions 20a of the lower plate member 20 and the same number of protrusions 21d of the upper plate member 21 (three for each). With the lower plate cylindrical portion 20d of the lower plate member 20 sandwiched between the flat portion 21a and the protrusions 21d of the upper plate member 21, the insertion portions 20a and the protrusions 21d are positioned on the same straight line in the radial direction of the upper plate cylindrical portion 21c, as shown by the dashed line in the figure.

[0033] When the burner cap 16 is installed above the burner head 13, for example, if boil-over liquid from a cooking vessel splashes onto the burner cap 16, causing distortion (warping) of the upper plate member 21 due to a heat shock, the greater the distance between the insertion portion 20a and the protrusion 21d (the greater the deviation in the circumferential direction of the upper plate cylindrical portion 21c), the greater the tendency for deformation of the burner cap 16. In the burner cap 16 of this embodiment, the distance between the insertion portion 20a and the protrusion 21d is minimized by being positioned on the same straight line in the radial direction of the upper plate cylindrical portion 21c, and the distortion force acting on the protrusion 21d of the upper plate member 21 is easily transmitted to the insertion portion 20a fixed to the burner head 13 and is received by the insertion portion 20a, making it possible to minimize deformation of the burner cap 16.

[0034] The above describes the stove burner 10 of this embodiment, but the present invention is not limited to the above embodiment and can be implemented in various forms within the scope of its gist.

[0035] For example, in the above-described embodiment, the lower plate cylindrical portion 20d extends from the periphery of the lower plate through-hole 20c of the lower plate member 20, and the upper plate cylindrical portion 21c extends from the periphery of the upper plate through-hole 21b of the upper plate member 21, with the protrusion 21d extending from the lower end of the upper plate cylindrical portion 21c (see FIG. 3). However, as shown in FIG. 7, the lower plate cylindrical portion 20d and the upper plate cylindrical portion 21c may be omitted, and the protrusion 21d may extend downward directly from the periphery (flat surface portion 21a) of the upper plate member 21 around the upper plate through-hole 21b. Then, the protrusion 21d may be bent radially outward so that the periphery of the lower plate through-hole 20c of the lower plate member 20 is sandwiched between the flat surface portion 21a of the upper plate member 21 and the protrusion 21d. However, if the lower plate cylindrical portion 20d and the upper plate cylindrical portion 21c are provided as in the above-described embodiment, centering is possible by fitting them together, and the upper plate cylindrical portion 21c can hide the lower plate member 20 (lower plate cylindrical portion 20d), thereby improving the aesthetic appearance of the central opening 16a.

[0036] In the above-described embodiment, the lower plate member 20 and the upper plate member 21 are joined by being sandwiched by bending the protrusions 21d on the inner peripheral side (the central opening 16a side) of the annular burner cap 16 (see FIG. 4). However, the sandwiching by bending the protrusions 21d is not limited to the inner peripheral side of the burner cap 16, but may also be on the outer peripheral side of the burner cap 16. That is, the outer periphery of the lower plate member 20 may be enlarged and bent downward to provide an extending fitting cylindrical portion that fits inside the outer peripheral cylindrical portion 21f of the upper plate member 21 (see FIG. 3), and the protrusions 21d extending downward from the lower end of the outer peripheral cylindrical portion 21f may be bent radially inward of the outer peripheral cylindrical portion 21f so that the fitting cylindrical portion of the lower plate member 20 is sandwiched between the flat portion 21a of the upper plate member 21 and the protrusions 21d. However, since the outer periphery of the burner cap 16 is more noticeable to the user than the inner periphery, it is more aesthetically pleasing to clamp the protrusion 21d by bending it on the inner periphery of the burner cap 16 as in the above-mentioned embodiment than to clamp it on the outer periphery.

[0037] Furthermore, in the above-described embodiment, the insertion portions 20a of the lower plate member 20 are press-fitted into the insertion holes 13e of the burner head 13 to be fixed, but the method of fixing the lower plate member 20 to the burner head 13 is not limited to this. For example, engaging grooves may be formed on the side surfaces of a plurality of protrusions that protrude upward from the top surface of the burner head 13, and a plurality of engaging claws may be provided that extend downward from the lower plate member 20, and the lower plate member 20 may be fixed to the burner head 13 by engaging the engaging claws with the engaging grooves.

[0038] Furthermore, in the burner cap 16 of the embodiment described above, the lower end of the cylindrical lower plate portion 20d of the lower plate member 20 was uniform (see FIG. 3). However, as shown in FIG. 8, a notched anti-rotation portion 20e may be provided at the lower end of the cylindrical lower plate portion 20d, and the anti-rotation portion 20e and the insertion portion 20a may be arranged on the same straight line in the radial direction of the cylindrical lower plate portion 20d. In this way, with the cylindrical upper plate portion 21c fitted inside the cylindrical lower plate portion 20d, the protrusions 21d bent radially outward can be engaged with the anti-rotation portion 20e, thereby reliably preventing rotation of the upper plate member 21 relative to the lower plate member 20. [Explanation of symbols]

[0039] 1...gas stove, 2...top plate, 3...insertion hole, 4...trivet, 10...cooker burner, 11...burner body, 11a...Outer plate, 11b...Inner plate, 11c...Mixing chamber, 11d... placement surface, 12... mixing tube, 12a... open end, 13... burner head, 13a... cylindrical wall, 13b... fitting cylinder, 13c...vertical passage, 13d...groove, 13e...insertion hole, 14...flame port, 16...burner cap, 16a...central opening, 17...Temperature sensor, 18...Support pole, 20...Lower plate member, 20a...insertion portion, 20b...recessed portion, 20c...lower plate through hole, 20d...lower plate cylindrical portion, 20e...rotation prevention portion, 21...upper plate member, 21a...flat portion, 21b...upper plate through hole, 21c...upper plate cylindrical portion, 21d... protrusion, 21e... notch, 21f... outer circumferential cylindrical portion, 30...gas supply pipe, 31...nozzle.

Claims

1. A burner body has a mixing chamber to which a mixture of fuel gas and air is supplied, and a burner head is mounted on the burner body. By doing so, a plurality of flame ports communicating with the mixing chamber are defined in the circumferential direction of the outer peripheral surface of the burner head, and a burner cap is installed to cover the top of the burner head. The burner cap is a plate-shaped lower plate member having a plurality of fixing portions fixed to an upper portion of the burner head; an upper plate member having a plurality of protrusions extending from a plate-like flat portion that overlaps the lower plate member; Equipped with With the flat surface of the upper plate member superimposed on the lower plate member, the protrusion is bent toward the lower plate member, thereby sandwiching the lower plate member between the flat surface of the upper plate member and the protrusion. A stove burner characterized by:

2. The stove burner according to claim 1, the lower plate member has a lower plate through-hole formed substantially at the center thereof and a lower plate tubular portion extending downward from the periphery of the lower plate through-hole, the upper plate member has an upper plate through-hole formed through approximately the center of the flat surface portion, and an upper plate tubular portion extending downward from the flat surface portion around the upper plate through-hole and fitted inside the lower plate tubular portion, The plurality of protrusions extending downward are arranged at intervals in the circumferential direction on the lower end of the upper cylindrical plate portion, With the flat surface of the upper plate member overlapped on the lower plate member and the upper plate member fitted inside the lower plate member, the protrusion is bent radially outward of the upper plate member, whereby the lower plate member is sandwiched between the flat surface of the upper plate member and the protrusion. A stove burner characterized by:

3. The stove burner according to claim 2, With the flat portion of the upper plate member overlapped on the lower plate member and the upper plate cylindrical portion fitted inside the lower plate cylindrical portion, a notch is formed on both sides of the protrusion at the lower end of the upper cylindrical plate, the notch extending to a position above the lower end of the lower cylindrical plate; The portion of the lower end of the upper cylindrical plate excluding the protrusion and the notch is located at the same height as or below the lower end of the lower cylindrical plate. A stove burner characterized by:

4. The stove burner according to claim 2 or 3, With the cylindrical lower plate portion of the lower plate member sandwiched between the flat portion of the upper plate member and the protrusion, the protrusion of the upper plate member and the fixing portion of the lower plate member are positioned on the same straight line in the radial direction of the cylindrical upper plate portion. A stove burner characterized by:

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