JP2017058080A - Cooking stove burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable secondary air to be assured even if the number of flame ports is increased so as to increase maximum fire power without increasing an outer diameter of a cooking stove burner or increasing its height.SOLUTION: A plurality of grooves are formed in a radial manner at either an upper surface of a burner body having a circular-ring shaped mixing chamber or a lower surface of a burner head installed at the burner body, the burner head is installed at the burner body to form a plurality of flame ports equally spaced apart at an outer peripheral surface of the burner head or the burner body while being communicated with the mixing chamber in a substantially horizontal direction. Then, the adjoining flame ports themselves cause the positions where the flames are formed to be made different in at least one of a radial direction and a vertical direction of the burner head. With this arrangement as above, the adjoining flames are hardly interfered to each other and a contact area between the flame in a peripheral direction at the burner head and secondary air is increased, so that even if the number of flame ports is increased and a spacing among the flame ports is made narrow, it is possible to keep secondary air and to restrict occurrence of incomplete combustion.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a stove burner in which a plurality of flame openings are opened on an outer peripheral surface in a state where a burner head is placed on a burner body.

  The stove burner includes a burner body having a substantially annular mixing chamber to which a mixed gas of fuel gas and primary air is supplied, and a burner head mounted on the burner body so as to cover the upper opening of the mixing chamber. I have. On the lower surface of the burner head, a plurality of flame opening grooves are formed radially with respect to the center of the burner head. When the burner head is mounted on the burner body, the burner head is formed by the upper surface of the burner body and the plurality of flame opening grooves. A plurality of flame openings are formed in the outer peripheral surface of the head. The mixed gas supplied to the mixing chamber is ejected from the flame opening, and when ignited by the spark plug, a flame is formed outside the flame opening, and the cooking container such as a pan placed above the stove burner is heated.

  In such a combustor, if the maximum gas power (amount of gas mixture) is increased without increasing the outer diameter, and the gas mixture jet speed increases excessively, the flame moves from the flame outlet to the diameter direction of the gas burner. Combustion becomes unstable at a distance, and the heating efficiency of the cooking container is deteriorated. Therefore, in order to moderately suppress the jet speed of the mixed gas, it has been proposed to enlarge the total opening area of the flame port by lengthening the flame port in the longitudinal direction or increasing the number of flame ports ( For example, Patent Document 1). In addition, it has been proposed to pierce a burner head in advance with a plurality of flame openings by changing the opening position and opening direction in the vertical direction (for example, Patent Document 2).

Japanese Patent Application Laid-Open No. 2000-171009 JP-A-8-152113

  However, the stove burner of Patent Document 1 tends to be insufficient if only the secondary air is obtained from the upper and lower sides of the flame outlet because the flame mouth becomes longer in the vertical direction, and the number of flame outlets is increased. As the distance from the flame opening becomes narrow, adjacent flames interfere with each other, making it difficult to obtain secondary air from the side (circumferential direction). Further, in the stove burner of Patent Document 2, since it is necessary to increase the height of the stove burner in order to form the flame opening in a plurality of stages, it cannot be applied if the height dimension is limited, and is formed upward. Since the spilled juice from the upper cooking container easily enters the flame outlet, there is a problem that the flame mouth may be clogged.

  The present invention has been made in response to the above-mentioned problems of the prior art. In order to increase the maximum heating power without increasing the outer diameter or height of the stove burner, The purpose of the present invention is to provide a stove burner that can secure secondary air even when the number is increased, and that can prevent boiled juice from a cooking vessel from entering the flame outlet.

In order to solve the above-described problems, the stove burner of the present invention employs the following configuration. That is,
A burner body having a substantially annular mixing chamber to which a mixed gas of fuel gas and primary air is supplied, and a burner head mounted on the burner body so as to cover an upper opening of the mixing chamber, A plurality of grooves are formed radially from the center on the lower surface of the burner head or the upper surface of the burner body, and the burner head communicates with the mixing chamber by placing the burner head on the burner body. Alternatively, a plurality of flame openings opening in the substantially horizontal direction on the outer peripheral surface of the burner body are formed at equal intervals with respect to an opening position and an opening area in the vertical direction, and the mixed gas ejected from the flame opening is ignited Then, in a stove burner where a flame is formed outside the flame outlet,
Adjacent ones of the plurality of flame outlets are characterized in that the positions where flames are formed are different in at least one of the radial direction and the vertical direction of the burner head.

  In such a stove burner of the present invention, adjacent flames are less likely to interfere by shifting the position of the flame in the burner head radial direction or in the vertical direction, and the contact area between the flame and the secondary air in the circumferential direction of the burner head is small. Since it increases, it becomes easier to obtain secondary air from the circumferential direction compared to the case where the position of the flame is uniform (overlapping) in the radial direction and the vertical direction. For this reason, even if the number of flame ports is increased and the interval between the flame ports becomes narrow, secondary air can be secured and occurrence of incomplete combustion can be suppressed. The plurality of flame openings are formed by placing the burner head on the burner body, and the opening positions in the vertical direction are all the same. As a result, it is possible to increase the maximum heating power without increasing the outer diameter or height of the stove burner. Furthermore, since each of the plurality of flame outlets is open in a substantially horizontal direction, the spilled juice from the upper cooking container enters the flame outlet as compared to the case where the flame mouth is formed upward. This can be suppressed.

  In the above-described stove burner of the present invention, the direction in which the mixed gas is ejected may be varied in the vertical direction between adjacent ones of the plurality of flame openings.

  In this way, as the mixed gas ejection direction approaches the horizontal direction, a longer flame is formed in the radial direction of the burner head, and as the mixed gas ejection direction is directed upward, the burner head radial direction is shorter and obliquely upward. Thus, the radial and vertical changes can be applied to the positions of adjacent flames. As a result, as described above, it is possible to secure secondary air from the circumferential direction of the burner head and suppress the occurrence of incomplete combustion.

  In addition, the ceiling surface of the communication passage surrounded by the upper surface of the burner body and the groove on the lower surface of the burner head in the above-described stove burner of the present invention has an inclination angle from the mixing chamber toward the flame opening between adjacent flame openings. It may be different.

  Since the mixed gas flowing out of the mixing chamber flows along the ceiling surface of the communication passage, for example, by making the ceiling surface horizontal, the mixed gas is ejected in the horizontal direction from the flame opening, and the ceiling surface is removed from the mixing chamber. By inclining upward toward the flame outlet, the mixed gas can be ejected obliquely upward with respect to the horizontal direction from the flame outlet. Since the jet direction of the mixed gas changes according to the inclination angle of the ceiling surface in this way, the radial direction of the burner head and the vertical direction change can be added to the position of the adjacent flame by changing the inclination angle of the ceiling surface. Can do.

  In addition, the bottom surface of the communication path surrounded by the groove on the upper surface of the burner body and the lower surface of the burner head in the above-described stove burner of the present invention has different inclination angles from the mixing chamber toward the flame port between adjacent flame ports. It may be allowed.

  By changing the inclination angle of the bottom of the communication passage through which the mixed gas passes, even if the opening area of the flame opening is the same, the communication passage is narrowed from the mixing chamber side toward the flame opening side, and the mixed gas ejection speed The communication path can be widened from the mixing chamber side to the flame opening side, and the jet speed of the mixed gas can be reduced. If the jet speed of the mixed gas is made different between adjacent flame openings, the radial direction and the vertical direction of the burner head can be changed at the position where the flame is formed.

  Further, in such a stove burner of the present invention, the opening positions of the adjacent flame outlets in the plurality of flame openings may be made different in the radial direction of the burner head.

  In this way, the position of the flame formed outside the flame mouth also changes according to the opening position of the flame mouth, so that the positions of the adjacent flames can be shifted in the radial direction of the burner head. As a result, it is possible to secure secondary air from the circumferential direction of the burner head and suppress the occurrence of incomplete combustion.

It is a perspective view which shows the upper external appearance of the stove burner 10 of the present Example protruded from the gas stove. It is sectional drawing which showed the internal structure of the stove burner 10 of a present Example. It is explanatory drawing which expanded and showed the lower surface of the outer peripheral wall 13a of the burner head 13 in which the several flame slot 13d of the present Example was formed. It is the expanded sectional view which compared the shape of the flame slot 13d for the main flame nozzles 14 adjacent by the burner head 13 of a present Example. It is the perspective view which showed the flame formed around the burner head 13 of a present Example. It is an expanded sectional view which compared the shape of the flame slot 13d for the main flame mouth 14 adjacent by the burner head 13 of a 1st modification. It is explanatory drawing which expanded and showed the lower surface of the outer peripheral wall 13a of the burner head 13 of a 2nd modification. It is the perspective view which showed the flame formed around the burner head 13 of a 2nd modification.

  FIG. 1 is a perspective view showing an upper appearance of a stove burner 10 of the present embodiment protruding from a gas stove 1. In the gas stove 1, the upper surface of a stove body (not shown) is covered with a top plate 2, and a stove burner 10 is installed in the stove body with the upper portion protruding from a through hole 3 formed in the top plate 2. Further, on the top surface of the top plate 2, the virtues 4 for placing a cooking container such as a pan above the stove burner 10 are installed.

  The stove burner 10 protrudes from the center of the burner cover 16, the burner body 13 that is mounted on the burner body 11, the burner cover 16 that is mounted above the burner head 13, and the burner cover 16. The temperature sensor 17 provided in the state is provided.

  A plurality of vertically long main flame openings 14 are opened at predetermined intervals on the outer peripheral surface of the burner head 13. When a mixed gas of fuel gas and primary air is ejected from the main flame port 14 and the mixed gas is ignited by a spark plug (not shown), a flame is formed outside the main flame port 14 and combustion of the mixed gas is started. . Further, a flame holding port 15 that is shorter in the longitudinal direction than the main flame port 14 is opened between the main flame port 14. The mixed gas is also ejected from the flame holding port 15, and the small flame formed outside the flame holding port 15 ensures the fire transfer and flame holding properties of the large flame formed outside the main flame port 14. ing.

  The burner cover 16 prevents the boiled juice from being applied to the burner head 13 when spilled from a cooking container placed on the Gotoku 4. Moreover, the temperature sensor 17 contacts the lower surface of a cooking container, and the temperature sensor 17 measures the temperature of a cooking container.

  FIG. 2 is a cross-sectional view showing the internal structure of the stove burner 10 of this embodiment. The burner body 11 according to the present embodiment is a substantially annular shaped mixture by facing and airtightly bonding two sheet metals (outer surface plate 11a and inner surface plate 11b) formed by pressing a stainless steel thin plate. A chamber 11c is formed inside. Further, the upper end side of the outer surface plate 11a is bent inward to form an upper surface, and the burner head 13 is placed on the upper surface.

  Further, a mixing tube 12 communicating with the mixing chamber 11 c is extended from the burner body 11. When the fuel gas is injected toward the opening end 12a of the mixing pipe 12, it flows into the mixing pipe 12 while sucking the primary air. Then, the fuel gas passing through the mixing tube 12 and the primary air are mixed, and the mixed gas is supplied to the mixing chamber 11c.

  The burner head 13 is formed in a substantially annular shape by forging or die casting using a metal material such as aluminum alloy or brass. A substantially cylindrical outer peripheral wall 13a extends downward from the outer edge portion of the burner head 13, and a substantially cylindrical fitting tube 13b longer than the outer peripheral wall 13a extends downward from the inner edge portion. It is installed. When placing the burner head 13 on the burner body 11, the lower surface of the outer peripheral wall 13 a is brought into contact with the upper surface of the burner body 11 with the fitting cylinder 13 b fitted to the inner surface plate 11 b of the burner body 11.

  The inside of the fitting cylinder 13b of the burner head 13 is a supply passage 13c for supplying secondary air necessary for the combustion of the mixed gas to the upper side of the burner head 13, and a temperature sensor is provided at the upper end of the supply passage 13c. A support pole 18 to which 17 is attached is inserted. Above the burner head 13, a substantially annular burner cover 16 is fixed by a mounting bracket (not shown), and the upper portion of the temperature sensor 17 protrudes from the central opening 16 a of the burner cover 16. The temperature sensor 17 is urged upward by a coil spring (not shown), and the upper end of the temperature sensor 17 comes into contact with the lower surface of the cooking container placed on the virtues 4.

  A plurality of grooves (flame grooves) 13d are formed in the lower surface of the outer peripheral wall 13a of the burner head 13 (surface placed on the burner body 11) so as to penetrate in the radial direction. When placed on the burner body 11, a plurality of flame mouths (main flame mouth 14 and flame holding mouth 15) communicating with the mixing chamber 11c are formed by the plurality of flame mouth grooves 13d and the upper surface of the burner body 11.

  FIG. 3 is an explanatory view showing, in an enlarged manner, the lower surface of the outer peripheral wall 13a of the burner head 13 in which a plurality of flame opening grooves 13d of the present embodiment are formed. In the figure, the lower surface of the outer peripheral wall 13a is shown with hatching. The plurality of flame opening grooves 13d are formed radially with respect to the center of the burner head 13, and the flame opening grooves 13d for the main flame opening 14 and the flame opening grooves 13d for the flame holding opening 15 are alternately formed. ing. In this embodiment, the main flame mouth 14 corresponds to the “flame mouth” of the present invention, and the flame mouth groove 13d for the main flame mouth 14 corresponds to the “groove” of the present invention.

  As described above, the flame holding port 15 is shorter in the vertical direction than the main flame port 14 (see FIG. 1). Correspondingly, the flame port groove 13d for the flame holding port 15 has a main flame port 13d. It is formed shallower than the flame opening groove 13d for the mouth 14 (short in the depth direction in FIG. 3). In addition, since the plurality of main flame openings 14 of the present embodiment are all open in a substantially horizontal direction, and the opening positions and the opening areas in the vertical direction are all set to be the same, they are equivalent in appearance. Yes (see FIG. 1). However, the plurality of flame mouth grooves 13d for the main flame mouth 14 are not uniform, and the shapes of the flame mouth grooves 13d for the adjacent main flame mouths 14 are different.

  FIG. 4 is an enlarged cross-sectional view comparing the shapes of the flame opening grooves 13d for the main flame openings 14 adjacent to each other in the burner head 13 of the present embodiment. 4A shows a cross-sectional view taken along the line AA in FIG. 3, and FIG. 4B shows a cross-sectional view taken along the line BB in FIG. It is shown. First, in the flame port groove 13d for the main flame port 14 shown in FIG. 4A, the groove upper surface (the ceiling surface of the communication path surrounded by the upper surface of the burner body 11 and the flame port groove 13d) is substantially horizontal. Is formed. Since the mixed gas flowing out of the mixing chamber 11c flows along the groove upper surface of the flame opening groove 13d, the mixed gas is ejected from the main flame opening 14 in a substantially horizontal direction as indicated by a two-dot chain line arrow in the figure. . Therefore, a long flame in the radial direction is formed outside the main flame opening 14 as indicated by a broken line in the drawing.

  On the other hand, in the flame mouth groove 13d for the main flame mouth 14 shown in FIG. 4B, the groove upper surface is directed from the inner side (mixing chamber 11c side) to the outer side (main flame mouth 14 side) of the burner head 13. The mixed gas is ejected from the main flame opening 14 obliquely upward with respect to the horizontal direction as indicated by a two-dot chain line arrow along the upper surface of the groove. As a result, a flame that is shorter in the radial direction is formed on the outer side of the main flame opening 14 as compared with the flame of FIG.

  Further, such a difference in the shape of the flame groove 13d affects not only the direction (angle) at which the mixed gas is ejected from the main flame port 14, but also the ejection speed of the mixed gas. In the stove burner 10 of the present embodiment, the upper surface of the burner body 11 is inclined upward from the inside to the outside, and the flame top groove 13d in FIG. The communication path through which the mixed gas passes is narrowed from the inner side (mixing chamber 11c side) to the outer side (main flame port 14 side) in relation to the inclination of the upper surface. On the other hand, in the flame opening groove 13d of FIG. 4B, the inclination of the groove upper surface is steeper than the inclination of the upper surface of the burner body 11, so that the communication path becomes wider from the inside to the outside. For this reason, even if the opening area of the main flame opening 14 is the same, the ejection speed of the mixed gas is higher from the main flame opening 14 of FIG. 4B than from the main flame opening 14 of FIG. Becomes slower. From the difference in the jet speed of the mixed gas, when the flame of FIG. 4A is compared with the flame of FIG. 4B, the jet speed of the mixed gas is slower in FIG. An upward flame tends to be formed at a position close to 14.

  FIG. 5 is a perspective view showing a flame formed around the burner head 13 of this embodiment. In order to avoid complicated illustration, only some of the plurality of main flame openings 14 opened on the outer peripheral surface of the burner head 13 show flame. As described above, in the burner head 13 of the present embodiment, the flames extending long in the radial direction of the burner head 13 can be obtained by making the inclination angles of the groove upper surfaces different between the adjacent flame port grooves 13d for the main flame port 14. The flames directed obliquely upward near the main flame opening 14 are alternately formed.

  If the positions where the flames are formed in the adjacent main flame ports 14 in the radial direction and the vertical direction of the burner head 13 in this way, the contact area between the flame and the secondary air in the circumferential direction of the burner head 13 increases. Therefore, secondary air is obtained from the circumferential direction of the burner head 13 as compared with the case where the position where the flame is formed with respect to the main flame opening 14 is uniform (overlapping) in the radial direction and the vertical direction. It becomes easy. For this reason, even if the number of the main flame openings 14 is increased and the interval between the main flame openings 14 and the main flame openings 14 becomes narrow, it is possible to secure the secondary air and suppress the occurrence of incomplete combustion. Further, the plurality of main flame openings 14 of the present embodiment are formed by placing the burner head 13 on the burner body 11, and the opening positions in the vertical direction are all the same. As a result, it is possible to increase the maximum heating power (the amount of the mixed gas ejected) without increasing the outer diameter of the stove burner 10 or increasing the height protruding from the top plate 2. Furthermore, in the stove burner 10 of the present embodiment, since the plurality of main flame openings 14 are all open toward the substantially water level direction, compared to the case where the obliquely upward main flame opening 14 is provided, It is possible to suppress boiled spilled juice from the upper cooking container from entering the main flame outlet 14.

  There are also the following modifications in the above-described stove burner 10 of the present embodiment. In the following, modifications will be described focusing on differences from the above-described embodiment. In the description of the modified example, the same components as those in the above-described embodiment are denoted by the same reference numerals and the description thereof is omitted.

  In the above-described embodiment, the direction in which the mixed gas is ejected from the main flame mouth 14 (ejection angle) is varied by varying the inclination angle of the groove upper surface of the flame orifice groove 13d. However, the mode in which the jet angle of the mixed gas is varied is not limited to this. For example, the length of the horizontal portion in the radial direction may be varied by forming the main flame mouth 14 side on the groove upper surface of the flame mouth groove 13d substantially horizontally.

  FIG. 6 is an enlarged cross-sectional view comparing the shapes of the flame opening grooves 13d for the main flame openings 14 adjacent to each other in the burner head 13 of the first modification. In the flame mouth groove 13d for the main flame mouth 14 shown in FIG. 6A, the upper surface of the groove is formed substantially horizontally, and the horizontal portion continues to the inner side of the burner head 13 (mixing chamber 11c side). Yes. For this reason, as shown by the two-dot chain line arrow in the figure, the mixed gas supplied upward from the mixing chamber 11c changes its flow direction along the horizontal portion, and is substantially horizontal from the main flame port 14. To erupt.

  On the other hand, in the flame mouth groove 13d for the main flame mouth 14 shown in FIG. 6B, the groove upper surface is formed substantially horizontally on the main flame mouth 14 side, but the inner side of the burner head 13 is horizontal. The portion does not continue and has a shape curved downward with a radius of curvature larger than that of FIG. As described above, the length in the radial direction of the horizontal portion in FIG. 6B is shorter than that in FIG. 6A, and the flow direction of the mixed gas supplied upward from the mixing chamber 11c is changed to the horizontal direction. Not enough. For this reason, the direction of the flow of the mixed gas does not change in the horizontal direction as indicated by the two-dot chain line arrow, and the mixed gas is ejected from the main flame port 14 obliquely upward with respect to the horizontal direction.

  Thus, even if the inclination angle (substantially horizontal in the first modification) on the upper surface of the groove opening 13d is the same, the length in the radial direction of the portion having the same inclination angle is made different. Thus, it is possible to change the ejection angle of the mixed gas ejected from the main flame opening 14. Then, in the conoburner 10 of the first modified example, the radial lengths of the horizontal portions formed on the upper surface of the groove of the flame groove 13d are made different between the adjacent main flame holes 14 to thereby change the jet angle of the mixed gas. By changing the position, the position where the flame is formed can be varied in the radial direction and the vertical direction of the burner head 13 as in the above-described embodiment. As a result, it is possible to secure secondary air from the circumferential direction of the burner head 13 and suppress the occurrence of incomplete combustion.

  Further, in the above-described embodiment and the above-described first modification, the position at which the flame is formed is changed in the radial direction and the vertical direction of the burner head 13 by changing the ejection angle of the mixed gas ejected from the main flame opening 14. It was different. However, the mode in which the position where the flame is formed is not limited to this, and the position where the main flame opening 14 opens may be varied in the radial direction of the burner head 13.

  FIG. 7 is an explanatory view showing, in an enlarged manner, the lower surface of the outer peripheral wall 13a of the burner head 13 of the second modified example. In the figure, the lower surface of the outer peripheral wall 13a is shown with hatching. As shown in the drawing, a plurality of recesses 13e recessed inward in the radial direction are formed at predetermined intervals on the outer peripheral surface of the burner head 13 of the second modification. And the main flame mouth 14 (henceforth a concave main flame mouth 14a) opened to this recessed part 13e and the main flame mouth 14 (henceforth, the convex main flame mouth 14b) opened between the two recessed parts 13e are arrange | positioned alternately. Has been. In the burner head 13 of the second modified example, the inclination angle of the groove upper surface is the same in the flame slot 13d for the concave main flame port 14a and the flame slot 13d for the convex main flame port 14b. The flame head groove 13d for the concave main flame mouth 14a is shorter in the radial direction of the burner head 13 than the flame mouth groove 13d for the convex main flame mouth 14b.

  FIG. 8 is a perspective view showing a flame formed around the burner head 13 of the second modified example. In order to avoid complicated illustration, only some of the plurality of main flame openings 14 (concave main flame openings 14a and convex main flame openings 14b) opened on the outer peripheral surface of the burner head 13 are shown with flames. Yes. In the stove burner 10 of the second modified example, the concave portion 13e is provided on the outer peripheral surface of the burner head 13, and the concave main flame port 14a and the convex main flame port 14b having different opening positions in the radial direction of the burner head 13 are alternately arranged. Thereby, the position where the adjacent flame is formed can be shifted (different) in the radial direction of the burner head 13. As a result, as in the above-described embodiment, it is possible to secure secondary air from the circumferential direction of the burner head 13 and suppress the occurrence of incomplete combustion.

  As described above, the combustor 10 according to this embodiment and the modification has been described. However, the present invention is not limited to the above-described embodiment and modification, and can be implemented in various modes without departing from the gist thereof. It is.

  For example, in the above-described embodiments and modifications, two types of flames with different flame formation positions in the radial direction and the vertical direction of the burner head 13 are alternately formed at the plurality of main flame openings 14, and every other flame is formed. A similar flame was formed. However, if the positions where the flames are formed (the types of flames formed) are different between the adjacent main flame outlets 14, it is not always necessary to be the same type every other, and the positions where the flames are formed. Three or more types of differences may be provided.

  Further, in the embodiment and the first modified example described above, the ejection angle and the ejection speed of the mixed gas ejected from the main flame port 14 are varied, and in the second modified example described above, the position where the main flame port 14 is opened is changed to a burner. By making the head 13 different in the radial direction, the position where the flame is formed is made different in the radial direction and the vertical direction of the burner head 13. However, the jetting angle and jetting speed of the mixed gas jetted from the main flame port 14 may be varied, and the position where the main flame port 14 is opened may be varied in the radial direction of the burner head 13. By doing so, the distance between the positions where the flames are formed between the adjacent main flame ports 14 is further increased, so that the supply of secondary air from the circumferential direction of the burner head 13 can be increased.

  In the above-described embodiments and modifications, the upper surface of the burner body 11 is uniform, and a plurality of flame opening grooves 13 d are formed on the lower surface of the burner head 13. However, on the contrary, by making the lower surface of the burner head 13 uniform and forming a plurality of flame slot grooves on the upper surface of the burner body 11 and placing the burner head 13 on the burner body 11, the burner body A plurality of main flame outlets 14 may be formed on the outer peripheral surface of 11. In this case, by changing the inclination angle of the bottom surface of the flame opening groove of the burner body 11 (the bottom surface of the communication path surrounded by the flame opening groove of the burner body 11 and the lower surface of the burner head 13), the mixed gas passes through. The passage is narrowed from the inner side (mixing chamber 11c side) to the outer side (main flame port 14 side) to increase the jetting speed of the mixed gas, or the communication path is widened from the inner side to the outer side to jet the mixed gas You can slow down. If the jet speed of the mixed gas is made different between the adjacent main flame ports 14, the radial direction and the vertical direction of the burner head 13 can be changed at the position where the flame is formed.

1 ... gas stove, 2 ... top plate, 3 ... through hole,
4 ... Five virtues, 10 ... Combo burner, 11 ... Burner body,
11a ... outer plate, 11b ... inner plate, 11c ... mixing chamber,
12 ... Mixing tube, 13 ... Burner head, 13a ... Outer wall,
13b ... fitting tube, 13c ... supply passage, 13d ... flame opening groove,
13e ... recess, 14 ... main flame mouth, 15 ... flame holder,
16 ... burner cover, 17 ... temperature sensor, 18 ... support pole.

Claims (5)

A burner body having a substantially annular mixing chamber to which a mixed gas of fuel gas and primary air is supplied, and a burner head mounted on the burner body so as to cover an upper opening of the mixing chamber, A plurality of grooves are formed radially from the center on the lower surface of the burner head or the upper surface of the burner body, and the burner head communicates with the mixing chamber by placing the burner head on the burner body. Alternatively, a plurality of flame openings opening in the substantially horizontal direction on the outer peripheral surface of the burner body are formed at equal intervals with respect to an opening position and an opening area in the vertical direction, and the mixed gas ejected from the flame opening is ignited Then, in a stove burner where a flame is formed outside the flame outlet,
A stove burner characterized in that a position where a flame is formed differs between at least one of the radial direction and the vertical direction of the burner head between adjacent ones of the plurality of flame openings. The stove burner according to claim 1,
The combustor characterized in that the direction in which the mixed gas is ejected is different in the vertical direction between adjacent ones of the plurality of flame openings. The stove burner according to claim 2,
The ceiling surface of the communication path surrounded by the upper surface of the burner body and the groove on the lower surface of the burner head has an inclination angle from the mixing chamber toward the flame port different between the adjacent flame ports. A combo burner characterized by The stove burner according to claim 1,
The bottom surface of the communication path surrounded by the groove on the upper surface of the burner body and the lower surface of the burner head has an inclination angle from the mixing chamber toward the flame port that is different between the adjacent flame ports. A featured stove. In the stove burner according to any one of claims 1 to 4,
A stove burner characterized in that, among the plurality of flame openings, adjacent flame openings have different opening positions in the radial direction of the burner head.

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