JP6346049B2 - Grill burner - Google Patents

Description

  The present invention relates to a burner for a grill.

  Conventionally, a grill burner is known in which three plates are overlapped and a main flame opening and a flame holding opening for flame holding and flame holding are formed by respective flange portions provided on the sides of the plate (for example, , See Patent Document 1). This type of burner has a bulging portion that bulges upward on the flange portion of the upper plate, and holds the flame between the flange portion of the middle plate and the flange portion of the lower plate. Forming a mouth. This type of burner is advantageous in terms of manufacturing cost, because it is possible to obtain a configuration necessary for the burner such as the flame opening portion by simply stacking and joining the three pressed plates.

  By the way, such a grill burner is provided with an ignition flame opening for igniting by ignition means such as an ignition plug. A target that forms a discharge gap with the ignition plug is provided in the vicinity of the ignition flame opening. And, when the gas / air mixture spouted from the ignition flame part passes through the discharge gap, it becomes an appropriate gas concentration to ignite the gas so that it is ignited by the discharge energy from the spark plug. It has become.

Japanese Patent No. 5470175

  However, in the above-mentioned grill burner, if the conditions such as the gas supply pressure, the discharge gap atmosphere temperature, and the gas type are different, the gas concentration may not be suitable for ignition in the discharge gap. However, there was a problem that ignition could not be performed normally. In addition, when the grill burner is installed as a lower burner in the grill cabinet, spilled oil or oil may enter the ignition flame and the ignition flame will be blocked. It was.

  An object of the present invention is to provide a grill burner capable of improving ignition performance and preventing the ignition flame opening from being blocked.

  The grill burner according to claim 1 of the present invention has an upper bulging portion bulging upward along the longitudinal direction and a flange portion at one end in a direction perpendicular to the longitudinal direction. An upper burner plate and an intermediate burner plate and a lower burner plate having a flange portion at one end in a direction perpendicular to the longitudinal direction are vertically overlapped and joined so that the flange portions overlap, A plurality of cylindrical pipes that form a gas flow path between the bulging part and the middle burner plate and communicate with the gas flow path by the flange part of the upper burner plate and the flange part of the middle burner plate And a part of the gas flowing through the gas flow path is formed in parallel with the width direction intersecting the longitudinal direction of the flange portion of each of the upper burner plate and the middle burner plate. The flange part of the burner plate In the grill burner using the gap as an auxiliary flame opening by flowing into the gap between the lower burner plate and the flange, the plurality of flame openings are ignited flames for ignition by ignition means. A center portion provided at one end portion of the flange portion of the middle burner plate and at a position corresponding to the ignition flame mouth portion, and being cut out in a concave shape toward the opposite side of the one end portion; A side notch and one end of the flange portion of the lower burner plate, provided at a position facing the middle notch, and a bottom notched in a concave shape toward the opposite side of the one end A side notch and one end of the flange portion of the upper burner plate, and provided at a position facing the middle notch and the lower notch, from the one end toward the lower side. A protrusion that protrudes and forms a discharge gap with the ignition means Characterized by comprising and.

  In the grill burner according to the first aspect of the present invention, a gas reservoir is formed by the gas ejected from the ignition flame portion being accumulated inside each of the middle notch portion and the lower notch portion. . As a result, even when the gas supply pressure, the atmospheric temperature in the discharge gap, the type of gas, and the like are different, the gas concentration suitable for ignition in the discharge gap can be obtained. As a result, the ignition flame port is reliably ignited, and the ignition performance of the grill burner can be improved. Further, in order to form a gas reservoir, an intermediate notch portion and a lower notch portion are respectively provided in the flange portion of the middle burner plate and the flange portion of the lower burner plate. Thereby, since a gas reservoir can be formed under the flange part of an upper burner board, it can be set as the structure which cannot spill and oil cannot penetrate | invade into the flame opening part for ignition in a grill warehouse. Thereby, it is possible to prevent the ignition flame portion from being clogged with oil or oil.

It is a perspective view of the burner 1 for grills. It is a top view of the burner 1 for grills. It is the perspective view which expanded a part of left burner part 3 shown in FIG. FIG. 4 is an exploded perspective view of a portion corresponding to FIG. 3. FIG. 3 is a front view of a flame forming unit 17. FIG. 4 is a cross-sectional view taken along the line I-I in FIG. 3. FIG. 4 is a cross-sectional view taken along the line II-II in FIG. 3. FIG. 4 is a cross-sectional view taken along the line III-III in FIG. 3. FIG. 4 is a partially enlarged view around an ignition unit 80 provided in the left burner unit 3. It is a front view of the flame formation part 170 which is a modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the top, bottom, left and right, front and back indicated by arrows in the figure are used. The grill burner 1 according to the present embodiment is used as, for example, a lower fire burner disposed on a grill (not shown) provided in a gas stove.

  First, the external shape of the grill burner 1 will be described. As shown in FIGS. 1 and 2, the grill burner 1 is formed in a horseshoe shape (substantially U-shaped) in a plan view, and extends from the left end of the middle burner portion 2 and the middle burner portion 2 extending linearly in the left-right direction. A left burner portion 3 that is bent forward at a substantially right angle and extends linearly is provided, and a right burner portion 4 that is bent at a substantially right angle forward from the right end portion of the middle burner portion and extends linearly.

  The middle burner portion 2 includes bulging bodies 7 and 8. The bulging body 7 extends in a straight line parallel to the longitudinal direction of the middle burner portion 2 and is formed in a cylindrical shape having a gas flow path (not shown) therein. A gas inflow port 6 having a funnel-like diameter is provided at the right end of the bulging body 7. A gas / air mixture flows into the gas inlet 6. The bulging body 8 is formed in a cylindrical shape on the front side of the bulging body 7, extending in a straight line parallel to the longitudinal direction of the middle burner portion 2 and having a gas flow path (not shown) therein. The left end, which is the end of the bulging body 7 in the gas flow direction, is connected to the central portion of the bulging body 8 in the longitudinal direction at the connecting portion 7A. Thereby, each gas flow path of the swelling body 7 and the swelling body 8 is mutually connected. The left and right ends of the bulging body 8 are connected to a bulging body 11 (described later) of the left burner section 3 and a bulging body 14 (described later) of the right burner section 4, respectively.

  As shown in FIGS. 1, 2, and 6, the left burner portion 3 includes a bulging body 11, an inner flange body 12, and an outer flange body 13. The bulging body 11 is formed in a cylindrical shape on the left side of the left burner portion 3, extending in a straight line parallel to the longitudinal direction of the left burner portion 3 and having a gas flow path 70 (see FIG. 6) inside. ing. The rear end portion of the bulging body 11 is connected to the left end portion of the bulging body 8 of the middle burner portion 2. The gas flow path 70 of the bulging body 11 communicates with the gas flow path of the bulging body 8, and the end of the gas flow direction is closed. The inner flange body 12 is provided along the right side of the bulging body 11 and is formed in a flange shape that extends to the center of the grill burner 1. A flame forming portion 17 is provided at the right end of the inner flange body 12 facing the center of the grill burner 1. The flame forming portion 17 is formed with a main flame mouth portion 21, an auxiliary flame mouth portion 22, and an auxiliary flame mouth portion 23, which will be described later. Each flame mouth part 21-23 is arrange | positioned so that the center of the burner 1 for grills may be faced. The outer flange body 13 is provided along the left side of the bulging body 11 and is formed in a flange shape that extends to the outside of the grill burner 1. The flange width of the outer flange body 13 is shorter than the flange width of the inner flange body 12.

  As shown in FIGS. 1 and 2, the right burner portion 4 has a bilaterally symmetric shape with the left burner portion 3 and includes a bulging body 14, an inner flange body 15, and an outer flange body 16. The bulging body 14 extends in a straight line parallel to the longitudinal direction of the right burner portion 4 on the right side of the right burner portion 4, and is formed in a cylindrical shape having a gas flow path (not shown) therein. . The rear end portion of the bulging body 14 is connected to the right end portion of the bulging body 8 of the middle burner portion 2. The gas flow path of the bulging body 14 communicates with the gas flow path of the bulging body 8, and the end in the direction in which the gas flows is blocked. The inner flange body 15 is provided along the left side of the bulging body 14 and is formed in a flange shape that extends to the center of the grill burner 1. A flame forming portion 18 is provided at the left end of the inner flange body 15 facing the center of the grill burner 1. Although not shown, the flame forming unit 18 is formed with a main flame port, a secondary flame port, and an auxiliary flame port, respectively, as with the flame forming unit 17. The outer flange body 16 is provided along the right side of the bulging body 14 and is formed in a flange shape that extends to the outside of the grill burner 1. The flange width of the outer flange body 16 is shorter than the flange width of the inner flange body 15.

  1 and 2, in the grill burner 1, the rear end side of the flame forming portion 17 of the left burner portion 3 and the rear end side of the flame forming portion 18 of the right burner portion 4 are An ignition unit 80 is provided for each. As shown in FIG. 9, the ignition part 80 is provided with an ignition flame part 25, and a spark plug 91 is supported by a support 95 near the ignition flame part 25. The support 95 includes an inner peripheral portion of a corner where the middle burner portion 2 and the left burner portion 3 are connected at a substantially right angle, and an inner periphery of a corner portion where the middle burner portion 2 and the right burner portion 4 are connected at a substantially right angle. Each is attached to each part. Further, a flame outlet portion 27 for detecting misfire is provided on the front side of the ignition flame portion 25. A thermocouple 92 is supported by a support 95 near the flame opening 27. The thermocouple 92 may be a frame rod. The specific structure of the ignition unit 80 will be described later.

  Next, the assembly structure of the grill burner 1 will be described. As shown in FIGS. 1, 2, and 6, the grill burner 1 is composed of one upper burner plate 30, two middle burner plates 40 </ b> A and 40 </ b> B, and one lower burner plate 50 made of stainless steel sheet metal. Are combined by overlapping each other vertically.

  First, the shape of the upper burner plate 30 will be described. As shown in FIGS. 1 and 2, the upper burner plate 30 is formed in a horseshoe shape in plan view. As shown in FIGS. 3 to 6, the portion corresponding to the left burner portion 3 includes an upper bulging portion 31 linearly extending in the front-rear direction, and an upper burner from the right end portion of the upper bulging portion 31. An inner flange portion 32 extending in a flange shape toward the center of the plate 30, and an outer flange portion 33 extending in a flange shape from the left end portion of the upper bulging portion 31 toward the outer side of the upper burner plate 30, Is formed by press working. Although not described in detail, also in the portion corresponding to the right burner portion 4, the left burner portion 3 and a left-right symmetrical upper bulge portion (not shown), an inner flange portion (not shown), and an outer flange portion (not shown) (Not shown) is formed by press working. Further, in the portion corresponding to the middle burner portion 2, two upper bulge portions (not shown) that respectively form the upper portions of the bulges 7 and 8 are formed by pressing.

  In the substantially linear portion corresponding to the left burner portion 3, as shown in FIG. 6, the upper bulging portion 31 bulges upward in a half-cylindrical shape, and the length of the portion corresponding to the left burner portion 3. It is formed along the direction. The inner flange portion 32 is formed in an elongated rectangular shape that is long in the front-rear direction in plan view. The inner flange portion 32 is formed with a plurality of upper flame mouth forming portions 34 at predetermined intervals in the longitudinal direction. When the flame forming portion 17 is viewed from the front, the upper flame port forming portion 34 is formed in a half-cylinder shape projecting upward in a reverse wedge shape, and is orthogonal to the longitudinal direction of the inner flange portion 32. It is provided along. The outer flange portion 33 is formed in an elongated rectangular shape that is narrower than the inner flange portion 32 and long in the front-rear direction in plan view.

  Furthermore, as shown in FIG. 6, a bent piece 37 is provided at the left end portion of the outer flange portion 33. The bent piece 37 is bent downward with the middle burner plate 40A and the lower burner plate 50 inside, and is connected to the middle burner plate 40A and the lower burner plate 50 by caulking. Also, as shown in FIGS. 1 and 2, it corresponds to the front end portion of the substantially linear portion corresponding to the left burner portion 3, the front end portion of the substantially linear portion corresponding to the right burner portion 4, and the middle burner portion 2. A burring hole 26 and an upright piece 26 </ b> A standing downward from the inner peripheral edge of the burring hole 26 are provided at the left end of the substantially linear portion.

  Next, the shape of the middle burner plates 40A and 40B will be described. As shown in FIGS. 1 and 2, the middle burner plate 40 </ b> A is formed in an elongated rectangular shape in plan view and is sandwiched between the upper burner plate 30 and the lower burner plate 50 along the longitudinal direction of the left burner portion 3. Arranged in such a way. The middle burner plate 40 </ b> B is formed in an elongated rectangular shape in plan view, and is disposed so as to be sandwiched between the upper burner plate 30 and the lower burner plate 50 along the longitudinal direction of the right burner portion 4. Since the middle burner plates 40A and 40B are symmetrical with each other, the middle burner plate 40A will be described here.

  As shown in FIGS. 3 to 6, the middle burner plate 40 </ b> A includes a lower bulging portion 41 extending linearly in the front-rear direction and a right end portion of the lower bulging portion 41 on the right side of the middle burner plate 40 </ b> A. An inner flange portion 42 extending in a flange shape and an outer flange portion 43 extending in a flange shape from the left end portion of the lower bulging portion 41 toward the left side are formed by pressing. .

  The lower bulging portion 41 bulges downward in a half cylinder shape and is formed along the longitudinal direction of the middle burner plate 40A. In the lower bulging portion 41, a plurality of communication holes 46 (see FIG. 6) are formed side by side in the longitudinal direction on the side wall located on the inner flange portion 42 side. The inner flange portion 42 is formed in an elongated rectangular shape that is long in the front-rear direction in plan view. As shown in FIG. 4, the inner flange portion 42 corresponds to each of the plurality of upper flame port forming portions 34 formed on the inner flange portion 32 of the upper burner plate 30 in the longitudinal direction. A plurality of lower flame-portion forming portions 44 are provided at the positions to be operated. When the flame forming part 17 is viewed from the front, the lower flame port forming part 44 is formed in a wedge shape projecting downward having a vertex at the bottom (see FIG. 5).

  Furthermore, as shown in FIG. 4, in the inner flange portion 42, a flat plate portion 47 is provided between each of the plurality of lower flame mouth forming portions 44. The positions of the plurality of flat plate portions 47 are the remaining positions not facing the lower flame mouth forming portion 44 among the plurality of upper flame mouth forming portions 34 formed on the inner flange portion 32 of the upper burner plate 30. It faces the plurality of upper flame mouth forming portions 34. In addition, a caulking hole (not shown) having the same shape as the burring hole 26 provided in the upper burner plate 30 and passing through the standing piece 26A is provided at the front end portion of the middle burner plate 40A.

  Next, the shape of the lower burner plate 50 will be described. As shown in FIGS. 1 and 2, the lower burner plate 50 is formed in a horseshoe shape in plan view. And the part corresponding to the left burner part 3 is as shown in FIGS. 3-6 from the lower side bulging part 51 extended linearly in the front-back direction, and the right end part of this lower side bulging part 51. An inner flange portion 52 extending in a flange shape toward the center of the lower burner plate 50, and an outer flange extending in a flange shape from the left end portion of the lower bulge portion 51 toward the outer side of the upper burner plate 30 The part 53 is formed by press working. Although not described in detail, a portion corresponding to the right burner portion 4 is also provided with a lower bulge portion (not shown) symmetrical to the left burner portion 3, an inner flange portion (not shown), and an outer flange portion. (Not shown) is formed by press working. Further, in the portion corresponding to the middle burner portion 2, two lower bulge portions (not shown) that respectively form the lower portions of the bulges 7 and 8 are formed by pressing.

  In the substantially linear portion corresponding to the left burner portion 3, the lower bulge portion 51 bulges downward in a half cylinder shape and is formed along the longitudinal direction of the portion corresponding to the left burner portion 3. ing. The inner flange portion 52 is formed in an elongated rectangular shape that is long in the front-rear direction in plan view. As shown in FIG. 4, the inner flange portion 52 is provided with a plurality of receiving portions 56 side by side in the longitudinal direction. The plurality of receiving portions 56 are disposed at a plurality of positions respectively corresponding to the plurality of lower side flame opening forming portions 44 provided on the inner flange portion 42 of the middle burner plate 40A. The receiving portion 56 is formed to be recessed downward corresponding to the position and shape of the lower portion of the lower flame mouth forming portion 44 provided in the inner flange portion 42 of the middle burner plate 40A.

  Further, the inner flange portion 52 is provided with a plurality of substantially cylindrical protrusion portions 55 arranged in the longitudinal direction. The plurality of projecting portions 55 are arranged so as to correspond to each of the plurality of flat plate portions 47 provided on the inner flange portion 42 of the middle burner plate 40A. The upper surface of the protrusion 55 is a flat surface. Further, at the front end portion of the substantially linear portion corresponding to the left burner portion 3, the front end portion of the substantially linear portion corresponding to the right burner portion 4, and the left end portion of the substantially linear portion corresponding to the middle burner portion 2 Are provided with caulking holes (not shown) having the same shape as the burring holes 26 provided in the upper burner plate 30 and passing through the upright pieces 26A.

  Next, the assembly process of the grill burner 1 will be described. First, an operator places the lower burner plate 50 on the workbench with the inner side facing upward. Next, the middle burner plate 40 </ b> A is disposed in a portion corresponding to the left burner portion 3 of the lower burner plate 50. At this time, as shown in FIG. 6, the lower bulging portion 41 of the middle burner plate 40 </ b> A is fitted inside the lower bulging portion 51 of the lower burner plate 50, and the caulking holes provided in the lower burner plate 50. A caulking hole (not shown) provided in the middle burner plate 40A is aligned with (not shown). Further, the inner flange portion 42 of the middle burner plate 40 </ b> A is overlapped with the inner flange portion 52 of the lower burner plate 50. As shown in FIGS. 3 to 5 and FIG. 8, a plurality of receiving portions 56 provided on the inner flange portion 52 are below the plurality of lower flame port forming portions 44 provided on the inner flange portion 42. Place the side part. Thereby, since the middle burner plate 40A is positioned with respect to the lower burner plate 50, it is possible to prevent the middle burner plate 40A from being displaced from the lower burner plate 50 during the assembly process. Further, the outer flange portion 43 of the middle burner plate 40 </ b> A is overlapped with the outer flange portion 53 of the lower burner plate 50. Although not described in detail, the middle burner plate 40B is disposed in a portion corresponding to the right burner portion 4 of the lower burner plate 50 in the same manner as the middle burner plate 40A.

  Next, the operator covers the lower burner plate 50 so that the inner side of the upper burner plate 30 is covered with the lower burner plate 50 on which the middle burner plates 40A and 40B are arranged on the inner side. Align with the outer edge of. At this time, in the portion corresponding to the left burner portion 3, the inner flange portion 32 of the upper burner plate 30 is laminated against the inner flange portion 42 of the middle burner plate 40A and the inner flange portion 52 of the lower burner plate 50. And overlay (see FIGS. 3 and 5). In addition, also in the part corresponding to the right burner part 4, it laminates | stacks similarly to the left burner part 3, and overlaps.

  6 to 8, the bent piece 37 of the upper burner plate 30 is folded in a state where the lower burner plate 50, the middle burner plate 40A (40B), and the upper burner plate 30 are stacked in this order from the bottom. The outer edge portion of the outer flange portion 53 of the lower burner plate 50 and the outer edge portion of the outer flange portion 43 of the middle burner plate 40A (middle burner plate 40B) are held inside and caulked. Thereby, the upper burner plate 30, the middle burner plate 40A (40B), and the lower burner plate 50 are integrally coupled. Further, the corresponding burring holes 26 of the upper burner plate 30 are aligned with the caulking holes provided in the middle burner plate 40A (40B) and the caulking holes provided in the lower burner plate 50, and the upright pieces 26A are connected to the caulking holes 26A. It inserts in a hole, this standing piece 26A is bent and it crimps. Thereby, since the adhesiveness of the upper burner plate 30, the middle burner plate 40A (40B), and the lower burner plate 50 is further improved, gas leakage and the like can be prevented. Further, by performing spot welding at a plurality of locations, the upper burner plate 30, the middle burner plate 40A (40B), and the lower burner plate 50 are firmly fixed to each other. In this manner, the middle burner portion 2, the left burner portion 3, and the right burner portion 4 are configured, and the assembly process of the grill burner 1 is completed.

  With reference to FIGS. 6-8, the gas flow path formed in the inside of the burner 1 for a grill is demonstrated. In the state where the upper burner plate 30, the middle burner plates 40 </ b> A and 40 </ b> B, and the lower burner plate 50 are integrally coupled, the upper bulging portion 31 of the upper burner plate 30, the lower bulging portion 51 of the lower burner plate 50, Are arranged so as to face each other vertically, and the intermediate burner plates 40A, 40B are arranged so as to be accommodated inside the corresponding lower bulging portions 51, respectively. A gas flow path 70 and a sub gas flow path 71 are formed inside the bulging body 11 of the left burner portion 3. The gas flow path 70 is formed in a space surrounded by the upper bulging portion 31 of the upper burner plate 30 and the lower bulging portion 41 of the middle burner plate 40A. Communicate. The sub-gas channel 71 is formed in a space surrounded by the outer surface of the right side wall of the lower bulging portion 41 of the middle burner plate 40A and the inner surface of the right side wall of the lower bulging portion 51 of the lower burner plate 50. The auxiliary flame opening 23 communicates. An air-fuel mixture is introduced into the auxiliary gas passage 71 from the gas passage 70 through a plurality of communication holes 46 provided in the lower bulging portion 41 of the middle burner plate 40A. A gas flow path and a sub gas flow path (not shown) similar to those of the left burner section 3 are also formed inside the bulging body 14 of the right burner section 4.

  With reference to FIGS. 3-5, the structure of the various flame mouth parts 21-23 in the flame formation part 17 and its effect are demonstrated. In the flame forming portion 17, the upper flame mouth forming portion 34 provided in the inner flange portion 32 of the upper burner plate 30 is opposed to the lower flame mouth forming portion 44 provided in the inner flange portion 42 of the middle burner plate 40 </ b> A. Thus, the rhombus-shaped main flame opening 21 is formed. As a result, the main flame opening 21 can be expanded to the area between the inner flange portion 42 of the middle burner plate 40A and the inner flange portion 52 of the lower burner plate 50. Can be taken, and the degree of freedom in design is expanded.

  Further, a plurality of receiving portions 56 provided on the inner flange portion 52 of the lower burner plate 50 are configured to receive the lower portion of the lower flame mouth forming portion 44 of the middle burner plate 40A. As a result, the position of the middle burner plate 40A can be prevented from shifting with respect to the lower burner plate 50, so that the assembly accuracy of the grill burner 1 can be improved. Further, the bent shape of each of the lower part of the lower flame mouth forming part 44 and the receiving part 56 is in close contact with each other, and further heat is applied so that the middle burner plate 40A is more closely attached to the lower burner plate 50. Can do.

  Further, since the lower flame mouth forming portion 44 is formed in a wedge-shaped projecting downward with the apex at the lowermost part, the lower flame mouth forming portion 44 is an intermediate burner that is the auxiliary flame mouth portion 23. The inner flange portions 42 and 52 of the plate 40A and the lower burner plate 50 are crossed obliquely. As a result, at the time of ignition by the spark plug 91, the contact area between the flame for transferring fire generated from the auxiliary flame opening 23 and the flame from the main flame opening 21 can be expanded, so that the flame transfer performance is improved. it can.

  Further, a triangular sub-flame port portion 22 is formed at a position sandwiched between the adjacent main flame port portions 21 and the main flame port portion 21. The auxiliary flame opening portion 22 has a smaller gas passage cross-sectional area than the rhombus-shaped main flame opening portion 21 and is located above the upper burner plate 30 with respect to the flat plate portion 47 provided on the inner flange portion 42 of the middle burner plate 40A. It can be easily formed by positioning the flame opening forming portion 34 so as to face each other. Since the main flame opening 21 is larger than the passage cross-sectional area of the auxiliary flame opening 22, a long flame is formed in the main flame opening 21 and a short flame is formed in the auxiliary flame opening 22. Thereby, even when the grill burner 1 is installed on a wide grill, the center part and both side parts can be heated uniformly, so that it is possible to prevent heating unevenness from occurring in the cooking object. Furthermore, since the main flame opening 21 and the auxiliary flame opening 22 are alternately arranged in the longitudinal direction of the flame forming portion 17, the grill burner 1 can be heated more uniformly in the front-rear direction. Therefore, it is possible to prevent heating unevenness from occurring in the object to be cooked.

  Further, as described above, the upper flame mouth forming portion 34 of the upper burner plate 30 and the flat plate portion 47 of the middle burner plate 40A are overlapped to form the auxiliary flame mouth portion 22, and the upper flame mouth forming portion 34 and Since the main flame mouth portion 21 is formed by superimposing the lower flame mouth forming portion 44 on the middle burner plate 40A, the formation pattern of the lower flame mouth forming portion 44 is different from that on the middle burner plate 40A. By replacing it with the middle burner plate 40A, it is possible to easily change to the optimal arrangement pattern of the main flame opening 21 and the auxiliary flame opening 22 corresponding to the grill storage to be attached, so that assembly is facilitated and parts are shared. Cost reduction can also be expected.

  Moreover, in this embodiment, in the flame formation part 17 of the left burner part 3, and the flame formation part 18 of the right burner part 4, the main flame mouth part 21 and the auxiliary flame mouth part 22 are located from the back side to the front side. Although arranged in an alternating manner, in the left burner portion 3 and the right burner portion 4, each arrangement pattern is relatively 1 so that the main flame mouth portion 21 and the auxiliary flame mouth portion 22 face each other. It is shifted one by one. Thereby, in the center part of the grill burner 1, the flames formed in the main flame mouth part 21 and the auxiliary flame mouth part 22 do not interfere with each other. Can be heated uniformly. And in order to form such flame formation parts 17 and 18, in this embodiment, as above-mentioned, middle burner board 40A differs from other middle burner board 40A from which the formation pattern of lower flame mouth formation part 44 differs. Since the arrangement pattern of the main flame mouth portion 21 and the auxiliary flame mouth portion 22 can be easily changed simply by replacing with the above, in the grill burner 1 having a horseshoe shape in plan view, more optimal main flame mouth portion 21 and auxiliary flame mouth portion. 22 arrangement patterns can be formed.

  Further, the lower surface of the inner flange portion 42 abuts on the upper end surface of each of the plurality of protrusions 55 provided on the inner flange portion 52 of the lower burner plate 50, so that the gap between the inner flange portion 52 and the inner flange portion 42 is reached. In addition, a substantially straight auxiliary flame opening 23 is formed. As shown in FIGS. 3 and 5, the grill burner 1 provides flame holding from the auxiliary flame opening 23 and the apex portion of the lower flame opening forming portion 44 and the inner flange during combustion after ignition. It is divided in the longitudinal direction by a receiving portion 56 provided in the portion 52. Thereby, since it can suppress that the flame from the main flame mouth part 21 and the flame from the auxiliary flame mouth part 23 mutually interfere and enlarge, the flame from the main flame mouth part 21 and secondary air A long thin flame can be generated by improving the contact. Therefore, by causing the combustion exhaust gas to flow through the center of the burner 1 for grill (for example, the central part in the grill cabinet), it is possible to prevent heating unevenness from occurring in the cooking object.

  With reference to FIG. 9, the structure of the ignition part 80 in the burner 1 for a grill is demonstrated. Here, the structure of the ignition part 80 of the left burner part 3 is demonstrated. As described above, the ignition part 80 is provided with the ignition flame part 25. The ignition flame portion 25 is formed in an inverted triangular shape in front view by the inner flange portion 32 of the upper burner plate 30 and the lower flame mouth forming portion 44 provided on the inner flange portion 42 of the middle burner plate 40A. , Communicated with the gas flow path 70 of the left burner portion 3. In such an ignition flame opening 25, an inner notch 48 is provided at one end of the inner flange portion 42 of the middle burner plate 40A. The middle cutout portion 48 is formed by cutting out in a substantially rectangular shape from one end portion of the inner flange portion 42 toward the left. Then, both corners positioned before and after the middle cutout 48 are each cut into a tapered shape, and the inside thereof is widened. Further, a lower notch 58 having the same shape as the middle notch 48 is provided at one end of the inner flange portion 52 of the lower burner plate 50 and at a position facing the middle notch 48. ing.

  Furthermore, at one end portion of the inner flange portion 32 of the upper burner plate 30 and at a position facing the middle notch portion 48 and the lower notch portion 58, the tip end side slightly protrudes from the one end portion to the right. A side L-shaped target 38 that is bent substantially at a right angle is provided below. The tip portion 38B of the target 38 is formed in a tapered shape as it goes downward. When viewed from the inner center of the grill burner 1, the widthwise direction of each of the middle notch portion 48 and the lower notch portion 58 is determined. It arrange | positions so that it may be located in the approximate center. With respect to such a tip portion 38A, the tip portion 91A of the spark plug 91 is disposed so as to face from below. A discharge gap G is formed between the tip 91A of the spark plug 91 and the tip 38A of the target 38.

  Further, a flame outlet portion 27 for detecting misfire is provided on the front side of the ignition flame portion 25. The flame port 27 is formed in an inverted triangular shape in front view by the inner flange portion 32 of the upper burner plate 30 and the lower flame port forming portion 44 provided on the inner flange portion 42 of the middle burner plate 40A. It communicates with the gas flow path 70 of the burner unit 3. In the vicinity of such a flame opening portion 27, a tip end portion 92A of a thermocouple 92 supported by a support tool 95 is disposed. The thermocouple 92 detects a flame formed at the flame opening 27.

  In the structure described above, a gas / air mixture flowing from the gas flow path 70 is ejected from the ignition flame portion 25. The air-fuel mixture ejected from the ignition flame part 25 accumulates inside the middle notch part 48 and the lower notch part 58, so that a gas reservoir is formed in the ignition flame part 25. By forming a gas pool in the ignition flame port 25, an appropriate gas concentration for igniting the gas is obtained in the discharge gap G. Therefore, when the ignition plug 91 is operated and discharged to the discharge gap G in a state where the gas reservoir is formed, the gas reservoir is ignited and the ignition flame 25 is ignited satisfactorily. Next, the adjacent auxiliary flame port 23 is ignited by the flame formed in the ignition flame port 25, and the main flame port 21 of the flame forming unit 17 and the flame formed in the auxiliary flame port 23 and A fire transfer phenomenon occurs in which the secondary flame port 22 is ignited one after another. In this way, flames are formed in the respective flame opening portions 21 to 23 of the flame forming portion 17.

  In this way, by forming a gas reservoir in the ignition flame port 25, even if the gas supply pressure, the atmospheric temperature in the discharge gap G, the type of gas, etc. are different, the discharge gap G A gas concentration suitable for ignition can be obtained. Thereby, since the ignition flame part 25 is ignited reliably, the ignition performance in the grill burner 1 can be improved. In the present embodiment, in order to form such a gas reservoir, in the inner flange portion 42 of the middle burner plate 40A and the inner flange portion 52 of the lower burner plate 50, the portions corresponding to the igniting portion 80 are respectively recessed. Notched. As a result, the gas reservoir can be formed below the inner flange portion 32 of the upper burner plate 30, so that a structure in which spillage or oil cannot enter the ignition flame port 25 can be achieved in the grill cabinet. Thereby, it is possible to prevent the ignition flame part 25 from being clogged with oil or oil. Further, in the present embodiment, by providing the middle notch 48 and the lower notch 58, it is possible to easily form a gas reservoir without adding parts. Therefore, the ignition performance can be effectively improved while saving the parts cost. Although not described in detail, since the same structure is provided also in the ignition part 80 of the right burner part 4, the same effect as that of the left burner part 3 can be obtained.

  As described above, the grill burner 1 according to the present embodiment is formed in a horseshoe shape in plan view, and includes the middle burner portion 2, the left burner portion 3, and the right burner portion 4. The grill burner 1 includes an upper burner plate 30, a middle burner plate 40 </ b> A, and a lower burner plate 50 in the left burner portion 3. The upper burner plate 30 is formed with an upper bulging portion 31 bulging upward along the longitudinal direction, and an inner flange portion 32 is formed at one end in a direction perpendicular to the longitudinal direction. The middle burner plate 40A has an inner flange portion 42 at one end in a direction orthogonal to the longitudinal direction. The lower burner plate 50 also has an inner flange portion 52 at one end portion in a direction orthogonal to the longitudinal direction. The upper burner plate 30, the middle burner plate 40A, and the lower burner plate 50 are joined in an overlapping manner so that the respective inner flange portions 32, 42, and 52 overlap each other. A gas flow path 70 is formed between the upper bulging portion 31 and the middle burner plate 40A. Further, a cylindrical main flame mouth portion 21 and a secondary flame mouth portion 22 communicating with the gas flow path 70 are formed by the inner flange portion 32 of the upper burner plate 30 and the inner flange portion 42 of the middle burner plate 40A. . Further, in the gap between the inner flange portion 42 of the middle burner plate 40A and the inner flange portion 52 of the lower burner plate 50, an auxiliary flame port portion 23 into which a part of the gas flowing through the gas flow path 70 flows is formed. Has been.

  An ignition flame port 25 is provided in the ignition unit 80 where the ignition plug 91 is disposed. The ignition flame portion 25 is formed in an inverted triangular shape in front view by the inner flange portion 32 of the upper burner plate 30 and the lower flame mouth forming portion 44 provided on the inner flange portion 42 of the middle burner plate 40A. , Communicated with the gas flow path 70 of the left burner portion 3. Further, at one end of the inner flange portion 42 of the middle burner plate 40 </ b> A and at a position corresponding to the ignition flame port 25, a middle notch 48 that is notched in a concave shape is provided. Further, a lower notch 58 that is notched in a concave shape is provided at one end of the inner flange portion 52 of the lower burner plate 50 and at a position facing the middle notch 48. Further, at one end portion of the inner flange portion 32 of the upper burner plate 30 and at a position facing the middle notch portion 48 and the lower notch portion 58, the tip end side projects downward, and the tip end of the spark plug 91 A target 38 that forms a discharge gap G with the portion 91A is provided.

  In such a grill burner 1, a gas reservoir is formed by the gas ejected from the ignition flame port 25 being accumulated inside the middle notch 48 and the lower notch 58. . As a result, even when the gas supply pressure, the atmospheric temperature in the discharge gap, the type of gas, and the like are different, the gas concentration suitable for ignition in the discharge gap can be obtained. As a result, the ignition flame opening 25 is reliably ignited, so that the ignition performance of the grill burner 1 can be improved. Further, in order to form a gas reservoir, an inner notch 48 and a lower notch 58 are provided in the inner flange portion 42 of the middle burner plate 40A and the inner flange portion 52 of the lower burner plate 50, respectively. As a result, the gas reservoir can be formed below the inner flange portion 32 of the upper burner plate 30, so that a structure in which spillage or oil cannot enter the ignition flame port 25 can be achieved in the grill cabinet. Thereby, it is possible to prevent the ignition flame part 25 from being clogged with oil or oil. Further, in the present embodiment, by providing the middle notch 48 and the lower notch 58, it is possible to easily form a gas reservoir without adding parts. Therefore, the ignition performance can be effectively improved while saving the parts cost. Although not described in detail, since the same structure is provided also in the ignition part 80 of the right burner part 4, the same effect as that of the left burner part 3 can be obtained.

  In addition, this invention is not limited to the said embodiment, A various change is possible. The grill burner 1 of the present embodiment has a horseshoe shape in plan view, but the shape is not limited to this. For example, an upper burner plate, a middle burner plate, and a lower burner made of a stainless steel sheet metal having a substantially rectangular outer shape. It may be configured by overlapping and joining three plate members.

  The grill burner 1 of the present embodiment is used as a lower fire burner disposed on a grill (not shown) provided in a gas stove, but may be used in other ways, for example, a grill It can also be used for a single grill device with a cabinet.

  Further, the grill burner 1 according to the above embodiment includes the main flame mouth portion 21 and the auxiliary flame mouth portion 22 in the flame formation portions 17 and 18. For example, the flame formation portion which is a modified example shown in FIG. 10. As shown by 170, the auxiliary flame opening 24 may be further provided that is larger than the auxiliary flame opening 22 and smaller than the main flame opening 21. The auxiliary flame opening 24 is smaller than the lower flame opening forming portion 44 that forms the main flame opening 21 in the upper flame opening forming portion 34 of the upper burner plate 30 and the inner flange portion 42 of the middle burner plate 40A. It is formed by vertically superimposing a lower flame mouth forming portion 49 bulging downward. Thus, by changing the height of the lower flame mouth forming portion 49 formed on the inner flange portion 42 of the middle burner plate 40A, a multi-stage flame mouth portion can be formed, so the size of the grill can be more flexible. A burner for the grill can be provided.

  Moreover, in the said embodiment, although the upper flame opening formation part 34 of the upper burner board 30 is reverse V shape, if it bulges upwards, shapes may be other than this, for example, even if it is a semicircular arc shape Good. The same applies to the lower flame mouth forming portion 44 of the middle burner plate 40A. In this case, the shape of the receiving portion 56 of the lower burner plate 50 may be matched with the lower flame mouth forming portion 44.

  Moreover, although the flame formation parts 17 and 18 of the said embodiment are each provided with the main flame mouth part 21, the auxiliary flame mouth part 22, and the auxiliary flame mouth part 23, even if the auxiliary flame mouth part 22 is abbreviate | omitted. The main flame opening 21 may be used instead of the auxiliary flame opening 22.

  Further, in the above embodiment, the cylindrical main flame port portion 21 communicating with the gas flow path 70 is connected to the inner flange portion 32 by the inner flange portion 32 of the upper burner plate 30 and the inner flange portion 42 of the middle burner plate 40A. , 42 is orthogonal to the width direction orthogonal to the longitudinal direction of each of the first and second portions 42, but it is sufficient that they intersect at least. For example, the main flame opening portion 21 extends in the width direction of the inner flange portions 32, 42. It may extend so as to cross diagonally.

  In the above description, the main flame mouth portion 21, the auxiliary flame mouth portion 22, and the ignition flame mouth portion 25 correspond to the “flame mouth portion” of the present invention, and the target 38 corresponds to the “projection portion” of the present invention.

DESCRIPTION OF SYMBOLS 1 Grill burner 21 Main flame mouth part 22 Sub flame mouth part 23 Auxiliary flame mouth part 25 Ignition flame mouth part 30 Upper burner board 32 Inner flange part 38 Target 40A Middle burner board 42 Inner flange part 50 Lower burner board 52 Inner flange Part 70 Gas flow path 91 Spark plug

Claims (1)

An upper bulge portion that bulges upward is formed along the longitudinal direction, and an upper burner plate having a flange portion at one end in a direction perpendicular to the longitudinal direction, and at least in a direction perpendicular to the longitudinal direction A middle burner plate and a lower burner plate each having a flange portion at one end are joined in an overlapping manner so that the flange portions overlap each other, and a gas is formed between the upper bulging portion and the middle burner plate. A plurality of cylindrical flame outlets that form a flow path and communicate with the gas flow path by the flange portion of the upper burner plate and the flange portion of the middle burner plate are connected to the upper burner plate and the middle burner plate. Each of the burner plates is formed in parallel to the width direction intersecting the longitudinal direction of the flange portion, and a part of the gas flowing through the gas flow path is formed between the flange portion of the middle burner plate and the lower burner plate. Clearance with the flange In grill burner and auxiliary burner port unit to the gap by flowing into,
The plurality of flame ports have ignition flame ports for being ignited by ignition means,
An intermediate notch portion provided at one end of the flange portion of the intermediate burner plate and at a position corresponding to the ignition flame opening, and recessed in a concave shape toward the opposite side of the one end;
A lower notch provided at one end of the flange portion of the lower burner plate and at a position opposite to the middle notch, and notched in a concave shape toward the opposite side of the one end;
Provided at one end of the flange portion of the upper burner plate and at a position facing the middle notch and the lower notch, projecting downward from the one end, and the ignition means A grill burner, characterized in that it comprises a projection that forms a discharge gap between the two.

Images