Concentric burner and gas cooking stove

Abstract

To provide a concentric burner constituted of a slave burner and a master burner surrounding the slave burner in which a slave burner inflow pipe 45 and a slave burner nozzle 46 facing an opening 451 of the upstream end thereof are disposed on a top plate 2 of a cooking stove and a tip of the slave burner nozzle 46 is positioned downward from the master burner and radial inward from an outer periphery of the master burner when being viewed from above, and which can inhibit a fuel gas jetted from the slave burner nozzle 46 from being fanned from a lateral side by an air flow that is generated between the top plate 2 and the master burner.SOLUTION: A concentric burner is provided with a pair of wind shield walls 47, 47 for covering an interval between a tip of a slave burner nozzle 46 and an opening 451 of an upstream end of a slave burner inflow pipe 45 from both horizontal lateral sides orthogonal to an opposite direction between the tip of the slave burner nozzle 46 and the upstream end of the slave burner inflow pipe 45.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a parent-child burner provided on a gas stove and a gas stove equipped with this parent-child burner. [Background technology]

[0002] Conventionally, this type of parent-child burner is known from the one described in Patent Document 1. In this type, the child burner includes a child burner body exposed on the top plate of the gas stove, a child burner cap with multiple child burner flame holes formed therein for ejecting the mixture in the child burner distribution chamber, which is placed on the child burner body so as to define a child burner distribution chamber between the child burner body and the child burner cap, and a child burner inlet pipe extending horizontally from the child burner body on the top plate of the gas stove, and the mixture of fuel gas and primary air ejected from the nozzle hole at the tip of the child burner nozzle provided facing the opening at the upstream end of the child burner inlet pipe is supplied to the child burner distribution chamber via the child burner inlet pipe. The parent burner also comprises an annular parent burner body surrounding the child burner body exposed on the top plate of the gas stove, an annular parent burner cap placed on the parent burner body so as to define a parent burner distribution chamber between the parent burner body and the parent burner cap, and having multiple parent burner flame holes formed therein for spraying the mixed gas in the parent burner distribution chamber, and a parent burner inlet pipe extending from the parent burner body below the top plate of the gas stove, so that the mixed gas of fuel gas and primary air sprayed from the nozzle hole at the tip of the parent burner nozzle provided facing the opening at the upstream end of the parent burner inlet pipe is supplied to the parent burner distribution chamber via the parent burner inlet pipe.

[0003] In general parent-child burners, the child burner inlet pipe extends below the top plate of the gas stove, just like the parent burner inlet pipe. However, this means that if the door of the cabinet with the gas stove built in on top is quickly opened when the parent-child burner is at its lowest flame (when only the child burner is burning at low flame), negative pressure will be created inside the cabinet, and this negative pressure will act on the opening at the upstream end of the child burner inlet pipe, causing the flame of the child burner to be drawn into the child burner distribution chamber, resulting in a misfire.

[0004] In contrast, in the device described in Patent Document 1, the child burner inlet pipe is arranged on the top plate of the gas stove, so even if the inside of the cabinet becomes negative pressure, this negative pressure does not act on the opening at the upstream end of the child burner inlet pipe, and the child burner does not misfire. However, when the child burner inlet pipe is arranged on the top plate of the gas stove, the child burner nozzle is also arranged on the top plate of the gas stove. And, since it would spoil the appearance if the child burner nozzle was conspicuous when viewed from above, in the device described in Patent Document 1, the tip of the child burner nozzle is positioned below the parent burner body and radially inward from the outer periphery of the parent burner body when viewed from above.

[0005] However, it was found that locating the tip of the slave burner nozzle in such a position would cause the following problem: Between the top plate of the gas stove and the parent burner, a relatively strong air current (air flow) is generated during combustion of the slave burner, which is drawn by the updraft generated by the combustion and heads toward the slave burner. As a result, the fuel gas sprayed from the nozzle hole of the slave burner nozzle is blown by the air current generated between the top plate and the parent burner from the horizontal side perpendicular to the opposing direction between the tip of the slave burner nozzle and the upstream end of the slave burner inlet pipe, making the combustion of the slave burner unstable. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] CN212691761U Summary of the Invention [Problem to be solved by the invention]

[0007] In view of the above, the present invention aims to provide a parent-child burner and a gas stove equipped with the parent-child burner, which can stabilize the combustion of the child burner by preventing the fuel gas injected from the nozzle hole of the child burner nozzle from being blown by the air current generated between the top plate and the parent burner. [Means for solving the problem]

[0008] In order to solve the above problems, the first invention of the present application is a parent-child burner to be installed in a gas stove, which is composed of a child burner and a parent burner surrounding the child burner, the child burner is equipped with a child burner body exposed on the top plate of the gas stove, a child burner cap with multiple child burner flame holes formed therein for spraying the mixture in the child burner distribution chamber, which is placed on the child burner body so as to define a child burner distribution chamber between the child burner body and the child burner cap, and a child burner inlet pipe extending horizontally from the child burner body on the top plate of the gas stove, so that the mixture of fuel gas and primary air sprayed from the nozzle hole at the tip of the child burner nozzle provided facing the opening at the upstream end of the child burner inlet pipe is supplied to the child burner distribution chamber via the child burner inlet pipe, and the parent burner is equipped with an annular parent burner body surrounding the child burner body exposed on the top plate of the gas stove, and a parent burner cap on the parent burner body for spraying the mixture in the child burner distribution chamber. The gas stove comprises an annular parent burner cap, which is placed between the parent burner body and the parent burner distribution chamber to define a parent burner distribution chamber, and which is formed with a plurality of parent burner flame holes for spraying the mixture in the parent burner distribution chamber, and a parent burner inlet pipe extending from the parent burner body below the top plate of the gas stove, and a mixture of fuel gas and primary air sprayed from a nozzle hole at the tip of a parent burner nozzle provided facing the opening at the upstream end of the parent burner inlet pipe is supplied to the parent burner distribution chamber via the parent burner inlet pipe, and the tip of the child burner nozzle is located below the parent burner body and radially inward from the outer periphery of the parent burner body when viewed from above, and a pair of wind shielding walls are provided to cover the gap between the tip of the child burner nozzle and the opening at the upstream end of the child burner inlet pipe from both horizontal sides perpendicular to the opposing direction of the tip of the child burner nozzle and the upstream end of the child burner inlet pipe. A second aspect of the present invention is a gas stove comprising the parent-child burner of the first aspect of the present invention.

[0009] According to the present invention (first invention), the windshield can prevent the fuel gas injected from the nozzle hole of the slave burner nozzle from being blown horizontally from the side perpendicular to the opposing direction between the tip of the slave burner nozzle and the upstream end of the slave burner inlet pipe by the air current generated between the top plate and the master burner, thereby stabilizing the combustion of the slave burner.

[0010] In the present invention, it is also preferable to provide an upper wall portion spanning between the upper ends of the pair of wind shielding walls, which can prevent the airflow from flowing around from the upper end of the wind shielding wall into the gap between the tip of the slave burner nozzle and the upstream end of the slave burner inlet pipe, thereby improving the effect of suppressing the fanning of the fuel gas.

[0011] In the present invention, it is also preferable that a pair of wind shielding walls extend from the upstream end of the child burner inlet pipe. This allows the wind shielding walls to be integrally formed with the burner inlet pipe, making it possible to avoid an increase in the number of parts required due to the provision of the wind shielding walls. Furthermore, this is advantageous in that it prevents a gap from being generated between the wind shielding walls and the upstream end of the burner inlet pipe due to an assembly error, which would impair the effect of suppressing the fanning of the fuel gas.

[0012] In the present invention, it is preferable that a skirt portion extending downward is extended from the outer periphery of the parent burner body, and the height of the lower end of the skirt portion is lower than the upper end of the wind shielding wall. In this way, the height of the airflow passing under the skirt portion and flowing between the top plate and the parent burner is lower than the upper end of the wind shielding wall. Therefore, the airflow can reliably hit the wind shielding wall, improving the effect of suppressing the fanning of the fuel gas.

[0013] Furthermore, in the gas stove of the second invention of the present application, when the parent and child burners have the above-mentioned skirt portion, it is preferable that a raised portion that rises above the lower end of the skirt portion is provided in a portion located radially inward from the skirt portion when viewed from above the top plate of the gas stove, and the tip of the child burner nozzle is located radially inward from the contour of the raised portion when viewed from above. In this way, the airflow that passes under the skirt portion and flows between the top plate and the parent burner hits the step of the contour of the raised portion that is higher than the lower end of the skirt portion. Therefore, the force of the airflow is weakened, and the effect of suppressing the fanning of the fuel gas is further improved. [Brief description of the drawings]

[0014] [Figure 1] 1 is a perspective view of a main part of a gas stove equipped with a parent and child burner according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a cross-sectional side view taken along line II-II in FIG. [Diagram 3] FIG. 3 is a cross-sectional plan view taken along line III-III in FIG. 2. [Figure 4] 4 is a cross-sectional view taken along line IV-IV in FIG. 2. [Diagram 5] FIG. 2 is a perspective view of a parent and child burner according to the embodiment in an exploded state. [Figure 6] 6 is an enlarged perspective view of a child burner inlet pipe of the parent and child burners of the embodiment, seen from the opposite direction to that of FIG. 5. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] 1 and 2 show a gas stove equipped with a parent-child burner A according to an embodiment of the present invention. The gas stove has a top plate 2 that covers the top surface of a stove body 1. The top plate 2 is composed of a top plate main body 21 and a cover plate 22 that prevents overflowing liquid from seeping in through a burner opening 21a that is opened in the top plate main body 21 and faces the parent-child burner A. A trivet 3 having a plurality of trivet claws 31 is placed on the top plate 2 so as to surround the burner opening 21a.

[0016] The parent-child burner A is composed of a child burner 4 and a parent burner 5 surrounding the child burner 4. The heat can be changed widely from a minimum heat where only the child burner 4 is burned at low heat to a maximum heat where both the child burner 4 and the parent burner 5 are burned at high heat. A thermocouple 6 for detecting the flame of the child burner 4 is attached to the child burner 4, and an ignition electrode 7 for igniting the parent burner 5 is attached to the parent burner 5.

[0017] The sub burner 4 includes a sub burner body 41 exposed on the top plate 2 of the gas stove, and a sub burner cap 42 placed on the sub burner body 41. Referring also to FIG. 5, the sub burner body 41 has an outer cylinder 411 and an inner cylinder 412 formed of separate members. The sub burner cap 42 has an outer cylinder portion 421 seated on the upper end of the outer cylinder 411 of the sub burner body 41, and an inner cylinder portion 422 fitted into the inner cylinder 412 of the sub burner body 41. An annular sub burner distribution chamber 43 is defined between the sub burner body 41 and the sub burner cap 42. A plurality of sub burner flame holes 44 for ejecting the mixture in the sub burner distribution chamber 43 are formed in the outer cylinder portion 421 of the sub burner cap 42.

[0018] The slave burner 4 further includes a slave burner inlet pipe 45 that extends horizontally from the slave burner body 41 on the top plate 2 of the gas stove. A slave burner nozzle 46 is provided on the top plate 2, facing an opening 451 at the upstream end of the slave burner inlet pipe 45. The slave burner nozzle 46 is attached to a nozzle holder 461 that is fixed to a mounting base 11 fixed to the stove body 1 so as to be exposed on the top plate 2 through the cover plate 22. Fuel gas is supplied to the slave burner nozzle 46 via a gas pipe 462 for the slave burner and the nozzle holder 461. A mixture of fuel gas and primary air ejected from a nozzle hole 46a at the tip of the slave burner nozzle 46 is supplied to the slave burner distribution chamber 43 via the slave burner inlet pipe 45.

[0019] The parent burner 5 includes an annular parent burner body 51 surrounding the child burner body 41 exposed on the top plate 2 of the gas stove, and an annular parent burner cap 52 placed on the parent burner body 51. Referring also to FIG. 5, the parent burner body 51 has an outer cylinder part 512 and an inner cylinder part 513 erected on the outer periphery and inner periphery of the annular bottom wall part 511. The parent burner cap 52 has an outer cylinder part 521 seated on the upper end of the outer cylinder part 512 of the parent burner body 51, and an inner cylinder part 522 fitted on the inner cylinder part 513 of the parent burner body 51. An annular parent burner distribution chamber 53 is defined between the parent burner body 51 and the parent burner cap 52. A plurality of parent burner flame holes 54 from which the mixed gas in the parent burner distribution chamber 53 is ejected are formed in the outer cylinder part 521 of the parent burner cap 52. In addition, on the upper surface of the parent burner cap 52, a slit-shaped flame transfer flame hole 54a extending in the radial direction is formed for flame transfer between the child burner 4 and the parent burner 5.

[0020] The parent burner 5 further includes a parent burner inlet pipe 55 extending from the parent burner body 51 below the top plate 2 of the gas stove. A mixture of fuel gas and primary air ejected from a nozzle hole at the tip of a parent burner nozzle (not shown) provided facing the opening at the upstream end of the parent burner inlet pipe 55 is supplied to the parent burner distribution chamber 53 through the parent burner inlet pipe 55. The parent burner inlet pipe 55 is composed of a downstream pipe 551 that fits into a port portion 53a that communicates with the parent burner distribution chamber 53 and extends to the bottom of the top plate 2, and an upstream pipe 552 that is connected to the lower end of the downstream pipe 551 via a connecting pipe portion 552a and extends horizontally below the top plate 2. A venturi portion 552b is formed in the upstream pipe 552 near its upstream end. When fuel gas is sprayed from the nozzle hole of the parent burner nozzle, negative pressure is generated in the venturi portion 552b, causing primary air to be sucked in from the upstream end of the upstream pipe 552, i.e., the opening at the upstream end of the parent burner inlet pipe 55.

[0021] However, when the child burner nozzle 46 is arranged on the top plate 2 of the gas stove as in this embodiment, if the child burner nozzle 46 stands out when viewed from above, it will spoil the appearance. Therefore, the tip of the child burner nozzle 46 is positioned below the parent burner body 51 and radially inward from the outer periphery of the parent burner body 51 when viewed from above.

[0022] The sub burner body 41 also has an extension 413 extending downward from the sub burner distribution chamber 43. Referring also to FIG. 3, an internal gap 414 communicating with the sub burner distribution chamber 43 is provided in a circumferentially predetermined range of the extension 413. The circumferential center portion of the internal gap 414 is formed in a narrow portion 4141 whose radial width is narrower than the radial width of the other portions of the internal gap 414, and the other portions of the internal gap 414, i.e., the circumferentially opposite sides, are formed in wide portions 4142 whose radial width is wider. The downstream end of the sub burner inlet pipe 45 communicates with the narrow portion 4141 of the internal gap 414, and is arranged to extend radially outward along a radial line passing through the circumferential center of the narrow portion 4141. The mixture of fuel gas and primary air sprayed from the nozzle hole 46a of the sub burner nozzle 46 flows from the narrow portion 4141 to the wide portion 4142 of the internal gap 414 via the sub burner inlet pipe 45, thereby obtaining the effect of sucking in primary air from the opening 451 at the upstream end of the sub burner inlet pipe 45 (an effect similar to the so-called radial venturi effect).

[0023] A seal portion 412a is formed in the portion that becomes the extension portion 413 of the inner cylinder 412 of the sub burner body 41, located in a portion other than the internal gap 414, and contacts the inner peripheral surface of the portion that becomes the extension portion 413 of the outer cylinder 411 of the sub burner body 41. In addition, the portion that matches the narrow width portion 4141 of the inner peripheral side wall surface 414a and the outer peripheral side wall surface 414b of the internal gap 414 is a plane perpendicular to a radial line passing through the circumferential center of the narrow width portion 4141 of the internal gap 414. Furthermore, an opening 452 at the downstream end of the sub burner inlet pipe 45 is opened in the portion that matches the narrow width portion 4141 of the outer peripheral side wall surface 414b of the internal gap 414. And the internal flow passage 453 that connects the opening 451 at the upstream end and the opening 452 at the downstream end of the sub burner inlet pipe 45 is narrowed toward the downstream side. Incidentally, the child burner inlet pipe 45 may also have a venturi portion near the upstream end, similar to the parent burner inlet pipe 55 .

[0024] Meanwhile, between the top plate 2 of the gas stove and the parent burner 5, a relatively strong air current (air flow) is generated during combustion of the child burner 4, attracted by the rising air current generated by the combustion and directed toward the child burner 4. Therefore, the fuel gas injected from the nozzle hole 46a of the child burner nozzle 46 is blown by the air current generated between the top plate 2 and the parent burner 5 from the horizontal side perpendicular to the opposing direction between the tip of the child burner nozzle 46 and the upstream end of the child burner inlet pipe 45, which may cause the combustion of the child burner 4 to become unstable.

[0025] In this embodiment, as shown in Fig. 3 and Fig. 6, a pair of wind shielding walls 47, 47 are provided to cover the gap between the tip of the sub burner nozzle 46 and the opening 451 at the upstream end of the sub burner inlet pipe 45 from both sides in the horizontal direction perpendicular to the opposing direction of the tip of the sub burner nozzle 46 and the upstream end of the sub burner inlet pipe 45. Furthermore, an upper wall portion 471 is provided to span between the upper ends of both wind shielding walls 47, 47. Both wind shielding walls 47, 47 and the upper wall portion 471 extend from the upstream end of the sub burner inlet pipe 45. Moreover, both wind shielding walls 47, 47 are provided so that the distance between them gradually increases toward the nozzle holder 461 side so that primary air is smoothly sucked in from the opening 451 at the upstream end of the sub burner inlet pipe 45.

[0026] According to the above configuration, the windshield wall 47 can prevent the fuel gas injected from the nozzle hole 46a of the child burner nozzle 46 from being fanned laterally (more precisely, from the horizontal side perpendicular to the opposing direction between the tip of the child burner nozzle 46 and the upstream end of the child burner inlet pipe 45) by the airflow generated between the top plate 2 and the parent burner 5, stabilizing the combustion of the child burner 4. Furthermore, the upper wall portion 471 can prevent the airflow from flowing around from the upper end of the windshield wall 47 into the gap between the tip of the child burner nozzle 46 and the upstream end of the child burner inlet pipe 45, improving the effect of suppressing the fanning of the fuel gas.

[0027] It is also possible to provide the wind shielding wall 47 as a separate and independent member from the sub burner inlet pipe 45. However, this increases the number of parts required by providing the wind shielding wall 47, leading to increased costs. Also, assembly errors may cause a gap to form between the wind shielding wall 47 and the upstream end of the sub burner inlet pipe 45, which may impair the effect of suppressing the fanning of the fuel gas injected from the nozzle hole 46a of the sub burner nozzle 46. In contrast, if the wind shielding wall 47 is extended from the upstream end of the sub burner inlet pipe 45 as in this embodiment, the wind shielding wall 47 is integrally formed with the sub burner inlet pipe 45. This is advantageous because it is possible to avoid an increase in the number of parts required by providing the wind shielding wall 47, and the effect of suppressing the fanning of the fuel gas is not impair due to assembly errors.

[0028] A skirt portion 514 extends downward from the outer periphery of the parent burner body 51. The height of the lower end of the skirt portion 514 is set lower than the upper end of the wind shielding wall 47, as shown in Fig. 4. This makes the height of the airflow passing under the skirt portion 514 and flowing between the top plate 2 and the parent burner 5 lower than the upper end of the wind shielding wall 47. This ensures that the airflow hits the wind shielding wall 47, improving the effect of suppressing the fanning of the fuel gas.

[0029] Furthermore, as shown in FIG. 4, a portion of the cover plate 22 located radially inward from the skirt portion 514 when viewed from above the top plate 2 of the gas stove, i.e., a portion of the cover plate 22 located radially inward from the skirt portion 514, is provided with a raised portion 221 that rises above the lower end of the skirt portion 514. As shown in FIG. 3, the tip of the child burner nozzle 46 is positioned radially inward from the contour of the raised portion 221 when viewed from above. According to this, the airflow that flows in between the top plate 2 and the parent burner 5 through under the skirt portion 514 hits the step 221a of the contour of the raised portion 221 that is higher than the lower end of the skirt portion 514. Therefore, the force of the airflow is weakened, and the effect of suppressing the fanning of the fuel gas is further improved.

[0030] Incidentally, the upper wall portion 471 is located below the bottom wall portion 511 of the parent burner body 51, and when overflowing liquid falls along the underside of the bottom wall portion 511 onto the upper wall portion 471, some of the overflowing liquid may get around the underside of the upper wall portion 471 and get into the nozzle hole 46a at the tip of the child burner nozzle 46, possibly causing clogging of the nozzle hole 46a. Therefore, a visor portion 515 is extended radially inwardly so as to cover the child burner inlet pipe 45 from above on the inner periphery of the circumferential portion of the bottom wall portion 511 of the parent burner body 51 that matches the child burner nozzle 46. On both side edges of the visor portion 515, as shown in Figs. 3 and 5, hanging walls 515a, 515a are provided that extend downward outside the child burner inlet pipe 45. According to this, even if the boil-over liquid falls between the parent burner body 51 and the child burner body 41, the boil-over liquid can be prevented from running down the underside of the bottom wall portion 511 of the parent burner body 51 and falling onto the upper wall portion 471, which helps to prevent clogging of the nozzle hole 46a of the child burner nozzle 46.

[0031] 5, the outer cylinder 411 of the child burner body 41 is integrally molded with a base plate portion 416 that is integrated with the bottom wall portion of the child burner inlet pipe 45 and that protrudes outward from a circumferential location that matches the child burner inlet pipe 45 at the bottom of the portion that becomes the extension portion 413 and the opposite location. The nozzle holder 461 that mounts the child burner nozzle 46 and the end of the base plate portion 416 on the nozzle holder 461 side are fixed to a common mounting base 11, thereby ensuring the concentricity of the child burner nozzle 46 and the child burner inlet pipe 45. In addition, the portion of the base plate portion 416 that protrudes outward from the opposite location of the circumferential location that matches the child burner inlet pipe 45 is provided with a short cylinder portion 416a into which the downstream pipe 551 of the parent burner inlet pipe 55 is fitted.

[0032] Although the embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited thereto. For example, in the above embodiment, the sub-burner inlet pipe 45 is integrally molded with the outer cylinder 411 of the sub-burner body 41, but the sub-burner inlet pipe 45 separate from the outer cylinder 411 may be connected to the outer cylinder 411. Also, in the above embodiment, the top plate 2 of the gas stove is composed of the top plate main body 21 and the cover plate 22, but the top plate main body 21 and the cover plate 22 may be integrated. [Explanation of symbols]

[0033] A...parent and child burners, 2...top plate, 221...raised portion, 4...child burner, 41...child burner body, 42...child burner cap, 43...child burner distribution chamber, 44...child burner flame hole, 45...child burner inlet pipe, 451...opening at upstream end, 46...child burner nozzle, 46a...nozzle hole, 461...nozzle holder, 47...wind shield wall, 471...upper wall portion, 5...parent burner, 51...parent burner body, 514...skirt portion, 52...parent burner cap, 53...parent burner distribution chamber, 54...parent burner flame hole, 55...parent burner inlet pipe.

Claims

1. A parent-child burner provided on a gas stove, the parent burner including a child burner and a parent burner surrounding the child burner, The slave burner comprises a slave burner body exposed on the top plate of the gas stove, a slave burner cap with a plurality of slave burner flame holes formed therein for spraying the mixture in the slave burner distribution chamber, which is placed on the slave burner body so as to define a slave burner distribution chamber between the slave burner body and the slave burner cap, and a slave burner inlet pipe extending horizontally from the slave burner body on the top plate of the gas stove, so that the mixture of fuel gas and primary air sprayed from the nozzle hole at the tip of the slave burner nozzle provided facing the opening at the upstream end of the slave burner inlet pipe is supplied to the slave burner distribution chamber via the slave burner inlet pipe, The parent burner comprises an annular parent burner body that surrounds the child burner body exposed on the top plate of the gas stove, an annular parent burner cap that is placed on the parent burner body so as to define a parent burner distribution chamber between the parent burner body and the parent burner cap and that has a plurality of parent burner flame holes formed therein for ejecting the mixture in the parent burner distribution chamber, and a parent burner inlet pipe that extends from the parent burner body below the top plate of the gas stove, so that the mixture of fuel gas and primary air ejected from the nozzle hole at the tip of the parent burner nozzle provided facing the opening at the upstream end of the parent burner inlet pipe is supplied to the parent burner distribution chamber via the parent burner inlet pipe, The tip of the child burner nozzle is located below the parent burner body and radially inward from the outer periphery of the parent burner body when viewed from above. A parent-child burner characterized in that a pair of wind shielding walls are provided to cover the gap between the tip of the child burner nozzle and the opening at the upstream end of the child burner inlet pipe from both horizontal sides perpendicular to the opposing direction between the tip of the child burner nozzle and the upstream end of the child burner inlet pipe.

2. 2. The parent-child burner according to claim 1, further comprising an upper wall portion extending between upper ends of the pair of wind shielding walls.

3. 2. The parent-child burner according to claim 1, wherein the pair of wind shielding walls extend from an upstream end of the child burner inlet pipe.

4. A parent-child burner as described in any one of claims 1 to 3, characterized in that a skirt portion extending downwardly extends from the outer periphery of the parent burner body, and the height of the lower end of the skirt portion is lower than the upper end of the wind shield wall.

5. A gas stove comprising the parent and child burner according to any one of claims 1 to 3.

6. A gas stove equipped with a parent-child burner as described in claim 4, characterized in that a raised portion that rises above the lower end of the skirt portion is provided in a portion located radially inward from the skirt portion when viewed from above the top plate of the gas stove, and the tip of the child burner nozzle is located radially inward from the contour of the raised portion when viewed from above.

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