JP2011149638A - Gas stove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas stove which does not only prevent flaming of a trivet but also achieves excellent combustion in a concentric burner by uniformly distributing mixed gas supplied to a lower position of a slave burner over the circumference of a master burner provided outside the slave burner annularly. <P>SOLUTION: The concentric burner 1 and the trivet 2 are provided. The concentric burner 1 includes: the slave burner 19; the annular master burner 20 surrounding the outer side of the slave burner 19; and gas passages 25 introducing mixed gas supplied to the lower position of the slave burner 19 to the master burner 20. Small burner ports 41 in which a jetting amount of the mixed gas is smaller than that in other burner ports are provided in positions corresponding to trivet claws 11 of the master burner 20. The gas passage 25 is extended radially from the slave burner 19 toward the master burner 20 so that the centerline A in the flowing direction of the mixed gas inside and a straight line B in the extending direction of the trivet claw 11 correspond to each other in a plan view, and the respective gas passages 25 are arranged in the circumferential direction at the same interval. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a gas stove including a parent-child burner and five virtues, wherein the parent-child burner has a small flame hole corresponding to the five virtue claws.

  Generally, a gas stove is provided with a burner and five virtues for supporting a cooking container such as a pot on the burner. Furthermore, there is a gas stove burner that employs a parent-child burner.

  Conventionally, as this kind of parent-child burner, a child burner having a plurality of flame holes on the outer periphery, a parent burner formed in an annular shape surrounding the outer side of the child burner and having a plurality of flame holes on the outer periphery, fuel gas and primary air And a plurality of pipes provided between the child burner and the parent burner to introduce the mixed gas supplied to the lower position of the child burner into the parent burner. There is known a gas flow path portion that is used as a flow path for circulating secondary air for the child burner between adjacent gas flow path portions (see Patent Document 1 below).

JP 2005-164058 A

  However, in the above-mentioned conventional one, in particular, when the flame of the flame hole formed on the outer periphery of the parent burner hits the virtues claw provided on the virtues, poor combustion occurs at the portion corresponding to the virtues.

  Further, in the above-described conventional apparatus, when the mixed gas is introduced into the parent burner by the plurality of gas passage portions and the mixed gas is supplied to the flame holes on the outer periphery of the parent burner and burned, it is located near the gas passage portion. Even if the flame in the flame hole is formed in a desired size, a desired flame may not be formed at a position corresponding to between adjacent gas passage portions, and good combustion cannot be obtained. This is because in the flame hole located near the gas passage part, the flow of the mixed gas from the outlet of the gas passage part toward the flame hole is relatively large. It is considered that it cannot be uniformly distributed over the entire area.

  In view of the above points, the present invention not only prevents the burning of virtues, but also applies the mixed gas supplied to the lower position of the child burner over the entire circumference of the parent burner provided in an annular shape outside the child burner. It aims at providing the gas stove which can obtain favorable combustion in a parent-child burner by distributing uniformly.

  The present invention provides a child burner having a plurality of flame holes on the outer periphery, a parent burner formed in an annular shape surrounding the child burner and having a plurality of flame holes on the outer periphery, and a mixed gas of fuel gas and primary air. A mixing pipe for supplying a lower position of the child burner, and a plurality of gas passage portions provided between the child burner and the parent burner for introducing the mixed gas supplied to the lower position of the child burner to the parent burner; Provided with a parent-child burner as a flow path for circulating secondary air for the child burner between adjacent gas passage portions, and extending in a direction from the periphery of the parent-child burner toward the center of the parent-child burner In the gas stove provided with the five victories having the five virtue claws, the parent burner is provided with a small flame hole at a position corresponding to the five virtue claws in which the amount of the mixed gas is smaller than the other flame holes, Mixing in the gas passage The center line along the flow direction of the gas and the straight line along the extending direction of the five virtue claws are extended in the radial direction from the child burner to the parent burner so that they coincide with each other in plan view. The gas passage portions are arranged at the same interval in the circumferential direction.

  According to the present invention, the main burner is provided with a small flame hole in which the ejection amount of the mixed gas is smaller than other flame holes, and the small flame hole is arranged at a position corresponding to the five virtue claws. At the position where the flame burns, the flame of the parent burner can be made small to suppress the burning of the five virtue claws and to prevent poor combustion.

  Furthermore, according to the present invention, the center line of each gas passage portion arranged at the same interval in the circumferential direction and the straight line of the five virtue claws are provided so as to coincide with each other in plan view. As a result, each gas passage portion is arranged at a position corresponding to the small flame hole of the parent burner.

  Thereby, the mixed gas can be distributed extremely uniformly inside the parent burner, and the combustion in the parent burner can be improved. That is, the small flame hole is relatively small in order to prevent the flame from hitting the five virtue claws, and the amount of the mixed gas ejected from the small flame hole is limited to be small. When the mixed gas that has passed through each gas passage enters the parent burner, a large amount of mixed gas hits the small flame holes and is dispersed except for a relatively small amount of mixed gas ejected from the small flame holes. As a result, the mixed gas is evenly distributed over the entire circumference of the parent burner inside the parent burner, and a sufficient amount of the mixed gas is directed to each flame hole to obtain good combustion over the entire circumference of the parent burner. Can do.

  Furthermore, according to the present invention, the center line of the gas passage portion and the straight line of the five virtue claws coincide with each other in plan view, so that the appearance in plan view is excellent.

  In the present invention, by providing the same number of the gas passage portions as the five virtue claws, all the gas passage portions are aligned with the corresponding five virtue claws. As a result, not only the appearance is further improved, but when disassembling the parent / child burner for cleaning etc. and reassembling it to the original state, the position of each gas passage part with respect to each virtuosity claw is used as a guide for easy positioning. Can be done.

The top view of the principal part of the gas stove of embodiment of this invention. II-II sectional view taken on the line of FIG. The disassembled perspective view of the parent-child burner in this embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The gas stove according to the present embodiment includes a parent-child burner 1 and five virtues 2 provided around the parent-child burner 1, as shown in FIGS.

  The parent-child burner 1 includes a burner body 4 exposed on a top plate 3 of a stove, and a mixing tube 5 disposed below the top plate 3. As shown in FIG. 2, the top plate 3 is formed of a metal plate or a glass plate, and is provided so as to cover the upper surface of the stove body 6. The top plate 3 is provided with a burner opening 7 that faces the parent-child burner 1 provided on the stove main body 6. A pedestal member 8 is attached to the peripheral portion of the burner opening 7, and the pedestal member 8 is An annular juice receiving plate 9 covering the upper side of the burner opening 7 is placed.

  On the soup receiving plate 9, Gotoku 2 is placed. As shown in FIG. 1, the virtues 2 include an annular virtuosity frame 10 and four virtues claws 11 fixedly supported at predetermined intervals in the circumferential direction of the virtues frame 10. As shown in FIG. 2, the five virtue frame 10 is fitted on the outer periphery of the step portion 12 formed on the juice receiving plate 9 and placed on the juice receiving plate 9 in a positioned state. Further, a convex portion 13 is formed on the inner side of the lower end of the virgin claw 11, and this convex portion 13 engages with a concave portion 14 formed in the step portion 12 of the juice receiving plate 9. As a result, Gotoku 2 is prevented from rotating with respect to the juice receiving plate 9.

  Further, the juice receiving plate 9 is positioned by fitting the inner periphery of the stepped portion 12 to the pedestal member 8 of the burner opening 7, and is further rotated by an engagement portion (not shown) provided between the pedestal member 8. Stopped.

  The mixing tube 5 of the parent-child burner 1 is fixed to the stove main body 6 via a frame 15 provided at the bottom of the stove main body 6. A gas nozzle 16 from which the fuel gas is ejected faces the upstream end of the mixing pipe 5, and a mixed gas is generated by the fuel gas ejected from the gas nozzle 16 and the primary air sucked as the fuel gas is ejected. An annular channel 17 for the mixed gas is formed at the downstream end of the mixing tube 5, and an upper part of the annular channel 17 is opened in an annular shape. The downstream end of the mixing tube 5 protrudes upward through the juice receiving plate 9, and the burner body 4 is detachably attached to the downstream end of the mixing tube 5 with an air-permeable gap 18 between the burner body 4 and the juice receiving plate 9. Mounted on. When the burner body 4 is attached to the downstream end of the mixing tube 5, the burner body 4 is prevented from rotating with respect to the mixing tube 5 by an engaging portion (not shown).

  As shown in FIGS. 1 and 2, the burner body 4 includes a child burner 19 positioned at the center thereof, and a parent burner 20 formed in an annular shape surrounding the child burner 19. As shown in FIG. 3, the child burner 19 includes a child burner head portion 21 serving as a base and a child burner cap 22 placed on the child burner head portion 21. The parent burner 20 includes a parent burner head portion 23 serving as a base and a parent burner cap 24 placed on the parent burner head portion 23.

  As shown in FIGS. 1 and 3, four gas passage portions 25 extending radially in the horizontal direction are provided between the sub-burner head portion 21 and the parent burner head portion 23 with a predetermined interval therebetween. The child burner head portion 21 and the parent burner head portion 23 are integrated by the gas passage portion 25.

  As shown in FIG. 2 and FIG. 3, the child burner head portion 21 has a circular ridge portion 26 that bulges from the central portion thereof, and a hole portion that feeds the mixed gas through the central portion of the ridge portion 26 in the vertical direction. 27 and a cylindrical child burner outer cylinder 28 provided concentrically from the raised portion 26 at a predetermined distance.

  As shown in FIG. 3, the child burner cap 22 includes a tube wall portion 29 that is seated on the upper surface of the child burner outer tube 28. A large number of grooves having different depths are formed in the cylindrical wall portion 29 with circumferential intervals.

  When the child burner cap 22 is placed on the child burner head portion 21, the upper portion of the child burner head portion 21 is covered with the child burner cap 22, and there is a predetermined gap at the upper end of the raised portion 26 so that the child burner cap 22 The back side is opposite. An annular chamber 31 is defined on the bottom 30 between the raised portion 26 and the child burner outer cylinder 28. Further, the groove formed in the cylindrical wall portion 29 of the child burner cap 22 becomes a hole by the upper surface of the child burner outer tube 28, and a number of flame holes are defined in the outer peripheral portion of the chamber 31.

  Referring to FIG. 3 (in FIG. 3, the grooves are denoted by reference numerals as flame holes), three small grooves are continuous at predetermined four locations in the cylindrical wall portion 29 of the child burner cap 22, and these small grooves are small. It becomes a flame hole 32. Each small flame hole 32 is located in the same direction as the five virtue claws 11, respectively. Thereby, the flame of the part corresponding to the 5 virtue claw 11 in the child burner 19 is made small, and it is suppressed that the 5 virtue claw 11 is beaten, and combustion failure is prevented. Large groove and small groove are alternately formed in the portion of the cylindrical wall portion 29 of the child burner cap 22 at a position corresponding to between the five virtue claws 11, the large groove becomes the main flame hole 33, and the small groove becomes the auxiliary flame hole 34. Become.

  In addition, three protrusions 35 a are formed on the back side of the child burner cap 22, and the child burner cap 22 is positioned by the protrusion 35 a engaging with the outer periphery of the raised portion 26. Further, a positioning claw 35b is formed on the back surface side of the child burner cap 22. By engaging the positioning claw 35b with a positioning recess 35c formed in the child burner outer cylinder 28, the child burner head portion 21 is formed. The upper child burner cap 22 is prevented from rotating. Accordingly, inadvertent rotation and displacement of the child burner cap 22 with respect to the child burner head portion 21 can be prevented, and the corresponding position between the small flame hole 32 and the five virtue claws 11 can be reliably maintained.

  As shown in FIG. 3, the parent burner head portion 23 includes a cylindrical parent burner outer cylinder 36 standing up along the outer periphery, and a cylindrical shape provided concentrically from the parent burner outer cylinder 36 at a predetermined distance. A parent burner inner cylinder 37 is provided.

  As shown in FIG. 3, the parent burner cap 24 includes a cylinder wall portion 38 that is seated on the upper surface of the parent burner outer cylinder 36. As in the case of the child burner cap 22, a number of grooves having different depths are formed in the cylindrical wall portion 38 with a circumferential interval.

  When the parent burner cap 24 is placed on the parent burner head portion 23, the upper portion of the parent burner head portion 23 is covered by the parent burner cap 24, and the bottom 39 between the parent burner outer cylinder 36 and the parent burner inner cylinder 37 is covered. An annular chamber 40 is defined. Further, the groove formed in the cylindrical wall portion 38 of the parent burner cap 24 becomes a hole by the upper surface of the parent burner outer cylinder 36, and a number of flame holes are defined in the outer peripheral portion of the chamber 40.

  As shown in FIG. 3, two or three small grooves are continuous at predetermined four locations in the cylindrical wall portion 38 of the parent burner cap 24, and these small grooves become small flame holes 41. Each small flame hole 41 is located in the same direction as the five virtue claws 11 respectively. Thereby, the flame of the part corresponding to the five virtue claws 11 in the parent burner 20 is made small, and it is suppressed that the five virtue claws 11 are beaten, and a combustion failure is prevented. Large groove and small groove are alternately formed in the portion of the cylindrical wall portion 38 of the parent burner cap 24 at a position corresponding to the five virtue claws 11, the large groove becomes the main flame hole 42, and the small groove becomes the auxiliary flame hole 43. Become.

  Further, a positioning claw 44 extending downward is formed inside one small flame hole 41 on the back side of the parent burner cap 24. The positioning claw 44 positions the parent burner cap 24 on the parent burner head portion 23 by engaging with a positioning recess 45 formed in the parent burner outer cylinder 36. Accordingly, inadvertent rotation and misalignment of the parent burner cap 24 with respect to the parent burner head portion 23 can be prevented, and the corresponding positions of the small flame holes 41 and the five virtue claws 11 can be reliably maintained.

  Here, the four gas passage portions 25 provided between the child burner 19 and the parent burner 20 will be described. As shown in FIG. 1, the gas passage portions 25 are provided at positions corresponding to the five virtue claws 11 and are arranged at the same interval in the circumferential direction. As shown in FIG. 2, each gas passage portion 25 is made to be able to flow a mixed gas through a hollow interior, and is supplied from the downstream end of the mixing tube 5 to the space below the bottom portion 30 of the child burner head portion 21. The mixed gas is introduced into the chamber 40 of the parent burner head portion 23. As shown in FIG. 1, the gas passage portion 25 includes a center line A (virtual line) along the flow direction of the mixed gas in the gas passage portion 25 and a straight line B along the extending direction of the five virtue claws. (Virtual line) is provided so as to coincide with each other in plan view.

  In the parent burner 20, as described above, the small flame holes 41 are positioned in the same direction as the five virtue claws 11. Thereby, the exit 25a of each gas passage part 25 respond | corresponds to the position in which each small flame hole 41 is formed.

  Moreover, as shown in FIG.1 and FIG.3, the cylindrical part 46 of planar view substantially triangular shape penetrated cylindrically in the upper and lower sides of the burner main body 4 between each gas passage part 25 mutually adjacent, The cylindrical portion 46 serves as a passage for the secondary air for combustion supplied to the child burner head portion 21.

  Although not shown, an ignition plug is provided on one of the cylindrical portions 46 or on the outer periphery of the parent burner 20 so that the child burner 19 or the parent burner 20 can be ignited. When the child burner 19 is ignited, it moves to the parent burner 20, and when the child burner 20 is ignited, it moves to the child burner 19 and both the burners 19, 20 are ignited.

  In the parent-child burner 1 of the present embodiment configured as described above, as shown in FIG. 2, when fuel gas is ejected from the gas nozzle 16 at the upstream end of the mixing pipe 5, the fuel gas burns air from the surroundings. It enters the inside of the mixing tube 5 while being entrained as primary air. Inside the mixing tube 5, the fuel gas and primary air are mixed to generate a mixed gas, and this mixed gas is supplied to the space below the bottom 30 of the child burner head portion 21 via the downstream end of the mixing tube 5. Thereafter, the mixed gas flows in a branched manner into the hole portion 27 formed in the raised portion 26 of the child burner head portion 21 and the inside of each gas passage portion 25. The mixed gas that has passed through the hole portion 27 of the child burner head portion 21 hits the back surface of the child burner cap 22 and is spread in the radial direction, and is distributed evenly through the chamber 31 toward each flame hole of the child burner 19. Burned. When the child burner 19 is combusted, as shown in FIGS. 1 to 3, a cylindrical shape between the gas passage portions 25 from the gap 18 formed between the burner body 4 and the juice receiving plate 9. Sufficient secondary air is supplied through the part 46, and the combustion in the child burner 19 is maintained in a good state.

  On the other hand, the mixed gas that has passed through each gas passage portion 25 enters the chamber 40 of the parent burner head portion 23. A small flame hole 41 by the parent burner cap 24 is formed at a position corresponding to the outlet 25 a of each gas passage portion 25. As described above, the small flame hole 41 forms a relatively small flame in order to avoid the flame from touching the five virtue claws 11. That is, since the small flame hole 41 corresponding to the position of the five virtue claws 11 is formed by arranging two or three small grooves side by side, the main flame hole by the large groove provided between the five virtue claws 11 is provided. Compared to 42, the amount of gas mixture ejected is limited to be small. For this reason, the mixed gas introduced into the chamber 40 of the parent burner head portion 23 from the outlet 25a of each gas passage portion 25 has a large amount of mixed gas except for a relatively small amount of mixed gas ejected from the small flame hole 41. It strikes the small flame hole 41 and is dispersed in the chamber 40. As a result, the mixed gas is very efficiently dispersed in the chamber 40, is evenly distributed in the chamber 40, and is burned in a good state toward each flame hole of the parent burner head portion 23.

  As described above, according to the parent-child burner 1 of the present embodiment, each gas passage portion 25 is provided at a position corresponding to the small flame hole 41 of the parent burner 20. The mixed gas can be uniformly distributed, and stable combustion in the parent burner 20 can be maintained in a good state.

  Further, as shown in FIG. 1, each of the five virtue claws 11 and each gas passage portion 25 are aligned on the same straight line, so that the appearance is good and the burner removed from the top plate 3 during cleaning and the like is also provided. Even when the main body 4 is returned to the top plate 3 again, the position of each gas passage portion 25 with respect to each of the five virtue claws 11 can be easily determined.

  In addition, in this embodiment, the parent-child burner 1 provided with the four gas passage parts 25 was shown corresponding to the Gotoku 2 provided with the four virtues claw 11. On the other hand, the number of five virtue claws is not limited to four, but is appropriately determined. Therefore, it is preferable to provide as many gas passage portions as the number corresponding to the five virtue claws. Further, the gas passage portion is provided at a position corresponding to the five virtue claws, but the gas passage portion may be provided so as to correspond to only one of the five virtue claws regardless of the number of the five virtue claws. For example, in the case where six virtues are provided, three gas passages corresponding to every other five virtues may be provided.

  Moreover, in this embodiment, although the structure which supplies mixed gas from the single mixing pipe 5 to the sub burner 19 and the parent burner 20 was shown, it does not restrict to this. For example, although not shown in the figure, a structure is provided that includes a mixing tube for the child burner and a mixing tube for the parent burner, and supplies the mixed gas for the child burner and the mixed gas for the parent burner separately to the central portion of the burner body. The structure of the present invention can also be applied to a thing.

  DESCRIPTION OF SYMBOLS 1 ... Parent-child burner, 2 ... Gotoku, 5 ... Mixing pipe, 11 ... Gotoku nail, 19 ... Child burner, 20 ... Parent burner, 25 ... Gas passage part, 41 ... Small flame hole, 46 ... Channel (tubular part) , A ... center line, B ... straight line.

Claims (2)

A child burner having a plurality of flame holes on the outer periphery, a parent burner formed in an annular shape surrounding the child burner and having a plurality of flame holes on the outer periphery, and a mixed gas of fuel gas and primary air below the child burner And a plurality of gas passages provided between the child burner and the parent burner to introduce the mixed gas supplied to the lower position of the child burner into the parent burner, A parent-child burner is provided as a flow path for allowing secondary air for the child burner to flow between adjacent gas passages, and has a plurality of five virtue claws extending in the direction from the periphery of the parent-child burner toward the center of the parent-child burner. In the gas stove with five virtues,
The parent burner is provided with a small flame hole in which the amount of gas mixture ejected is smaller than other flame holes at a position corresponding to the five virtue claws,
The gas passage portion is arranged so that the center line along the flow direction of the mixed gas in the gas passage portion and the straight line along the extending direction of the five virtue claws coincide with each other in the plan view from the child burner. A gas stove that extends in the radial direction over the burner and that the gas passage portions are arranged at equal intervals in the circumferential direction.   The gas stove according to claim 1, wherein the same number of the gas passage portions as the five virtue claws are provided.

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