JP2015183890A - burner head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a burner head capable of excellently forming flame and capable of thinning a body part.SOLUTION: A burner head 1 includes: a body part 2 that has an internal flow passage S in which combustion gas can circulate in a longitudinal direction; a plurality of flame holes 3 that is formed in the longitudinal direction of the body part 2, and can combust the combustion gas of the internal flow passage S; and a step part 4 that communicates the internal flow passage S of the body part 2 and the flame hole 3 while reducing its diameter toward the flame hole 3, and can jet the combustion gas of the internal flow passage S at the flame hole 3. The step part 4 is formed in the longitudinal direction of the body part 2 between flame holes 3 adjacent to each other.

Description

  The present invention relates to a burner head capable of causing a combustion gas to be ejected from a flame port while flowing through an internal flow path of a main body, and burning the combustion gas at the flame port.

  For example, a so-called Bunsen combustion-type cooking device for heating foods has a casing in which a pan or the like can be placed on an upper part, and combustion gas is burned to heat the upper pan or the like housed in the casing. With a burner head. Such a burner head includes a main body having an internal flow path through which combustion gas can flow in the longitudinal direction, and a plurality of flame ports formed in the longitudinal direction of the main body and capable of burning the combustion gas in the internal flow path. Was.

  Further, as disclosed in, for example, Patent Document 1, the conventional burner head has step portions formed on both sides in the width direction of the main body portion, and the internal flow path of the main body portion via the step portion. The flame outlet was in communication. That is, the step portion formed in the conventional burner head is for generating a uniform flame with momentum from all the flame openings, and the internal flow path and flame of the main body section are reduced in diameter toward the flame openings. By communicating with the opening, the combustion gas in the internal flow path is ejected vigorously and uniformly at the flame opening.

JP 2005-308316 A

  However, in the above-described conventional burner head, since the step portions are formed on both sides in the width direction of the main body portion, it is difficult to reduce the size of the main body portion in the width direction and reduce the thickness. That is, if the burner head is thinned, the pitch of the flame ports formed in the longitudinal direction of the main body can be increased to allow wide and gentle heating, and it can be installed corresponding to various layouts. In order to generate a good flame, a stepped portion extending in the width direction of the main body portion is required, and the dimension in the width direction is increased by the amount of the protruding stepped portion, making it difficult to reduce the thickness.

  This invention is made | formed in view of such a situation, and it is providing the burner head which can make a flame | frame favorable and can make a main-body part thin.

  The invention described in claim 1 is a main body having an internal flow path through which combustion gas can flow in the longitudinal direction, and a plurality of flames formed in the longitudinal direction of the main body and capable of burning the combustion gas in the internal flow path And a step portion that allows the internal channel and the flame port of the main body to communicate with each other while reducing the diameter toward the flame port, and allows the combustion gas in the internal channel to be ejected at the flame port. In the burner head, the step portion is formed in the longitudinal direction of the main body portion between the adjacent flame openings.

  According to a second aspect of the present invention, in the burner head according to the first aspect, sheet metal members formed in a desired concavo-convex shape by pressing are overlapped, and the flame opening and stepped portion are formed along the overlapped portion. Are alternately formed.

  According to a third aspect of the present invention, in the burner head according to the first or second aspect, the internal flow path is formed so that a cross-sectional area gradually decreases from the fuel gas mixing tube outlet toward the tip. To do.

  According to the invention of claim 1, since the step portion is formed in the longitudinal direction of the main body portion between the adjacent flame openings, the main body portion is compared with the step portion protruding in the width direction of the main body portion. Can be made thin, and a flame can be formed well.

  According to the invention of claim 2, since the sheet metal member formed in a desired uneven shape by press working is overlapped, and the flame opening and the stepped portion are alternately formed along the overlapping portion, By reducing the degree of processing of the sheet metal, the burner head can be manufactured smoothly.

  According to the invention of claim 3, since the internal flow path is formed so that the cross-sectional area gradually decreases from the fuel gas mixing tube outlet toward the tip, the amount of combustion gas ejected from each flame port is made more uniform. be able to.

The front view which shows the burner head which concerns on embodiment of this invention Plan view showing the burner head III-III line sectional view in FIG. IV-IV line sectional view in FIG. An enlarged front view showing a part of the burner head in an enlarged manner An enlarged plan view showing a part of the burner head in an enlarged manner The top view which shows the sheet-like metal member of the manufacturing process in the same burner head A plan view and a front view showing a cooking device to which the burner head is applied

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The burner head according to the present embodiment constitutes a so-called Bunsen combustion type burner unit that can heat a cooking pan or the like, for example, and as shown in FIGS. The step portion 4 is mainly included. In addition, about the burner head 1 which concerns on this embodiment, let the left-right direction in FIG. 1 be a longitudinal direction, and let the up-down direction in FIG. 2 be the width direction.

  The main body 2 is composed of an integral part of a metal plate having an internal flow path S through which combustion gas can flow in the longitudinal direction. In this embodiment, the dimension in the width direction is set to be small and the thickness is reduced. Yes. The internal flow path S forms a long and narrow space having a combustion gas supply port Sa and a tip Sb, and the combustion gas supplied from the supply port Sa is mixed with air (primary air) at the tip Sb. It is possible to circulate towards. Further, the internal flow path S according to the present embodiment has a gradually decreasing cross-sectional area (space area) from the fuel gas mixing tube outlet Ss toward the tip Sb (from the right end to the left end in FIG. 1). Is formed. Thereby, the ejection amount of the combustion gas from each flame mouth 3 can be made more uniform.

  A plurality of the flame openings 3 are formed in the longitudinal direction of the main body 2 and can burn the combustion gas in the internal flow path S (strictly, the combustion gas mixed with the primary air). Opening upward. In other words, a plurality of the flame openings 3 are formed in a straight line at a predetermined interval in the upper part of the main body 2 and each can be ignited while jetting combustion gas to form a flame. .

  The stepped portion 4 allows the internal channel S and the flame port 3 of the main body 2 to communicate with each other while reducing the diameter toward the flame port 3, and the combustion gas in the internal channel S can be ejected from the flame port 3. It is. That is, when the combustion gas supplied to the internal flow path S is discharged from the flame port 3 through the step portion 4, a “compressible flow” in fluid dynamics (a gas having compressibility such as a gas gradually has a sectional area). By utilizing the phenomenon that the flow velocity becomes faster by flowing through the flow path where the flow rate becomes smaller, it is possible to generate a uniform flame with momentum from all the flame ports 3.

  Here, the step part 4 according to the present embodiment is formed in the longitudinal direction of the main body part 2 between the adjacent flame openings 3. Specifically, as shown in FIGS. 5 and 6, gradient surfaces 4 a and 4 b are arranged between the adjacent flame openings 3 along the longitudinal direction of the main body 2 with a center line α (the center of the adjacent flame openings 3. Are inclined symmetrically (gradient surfaces 4a and 4b are V-shaped) in the figure, and the gradient surfaces 4a and 4b are located on both sides of the flame port 3 (left and right in the figure). (In the present embodiment, the left side in the drawing is an upward slope and the right side is a downward slope) forms a stepped portion 4.

  As a result, the flow path from the internal flow path S to the flame opening 3 gradually decreases in cross-sectional area toward the flame opening 3, making the compressive flow noticeable and making the nozzle effect effective from all the flame openings 3. A vigorous and uniform flame can be generated. At the same time, since the step portion 4 is formed in the longitudinal direction of the main body portion 2 between the adjacent flame ports 3, the overhang dimension in the width direction of the main body portion 2 can be suppressed, and the burner head 1 as a whole is thin. Can be easily achieved.

  Thus, by reducing the thickness of the burner head 1, it is possible to reduce the area that receives radiant heat and the liquid overflowing from the cooking utensil to be heated. Furthermore, since the step part 4 is formed between the flame openings 3, the separation dimension (flame opening pitch) of the adjacent flame openings 3 can be set relatively large, and wide and gentle heating can be performed. In addition, the width | variety of the main-body part 2 can be suitably set according to an application object, the magnitude | size of the internal flow path S, and the flame outlet 3, etc.

  On the other hand, as shown in FIG. 7, the burner head 1 according to the present embodiment overlaps the sheet-like metal member A formed in a desired uneven shape by press working, and the flame outlet 3 along the overlapping portion. And the step part 4 shall be formed alternately. For example, the sheet-like metal member A is press-worked symmetrically about the folding line L, and a plurality of concave shapes a are formed at substantially equal intervals at the upper edge portion and the lower edge portion, and communicated with the concave shape a. A concave shape c is formed. In addition, the site | part b has shown the area | region between the adjacent concave shapes a.

  Then, when the sheet-like metal member A is bent with the folding line L as the center, and the upper edge portion and the lower edge portion are overlapped and matched, the concave shapes a of the upper edge portion and the lower edge portion are matched to each other. 3 is formed, and the respective concave shapes c match to form the internal flow path S. Furthermore, by overlapping the sheet-like metal member A, the upper edge portion portion b and the lower edge portion portion b coincide with each other, and the step portion 4 is formed. Thereafter, by welding or the like at a predetermined part (part b in this embodiment), the burner head 1 in which the flame openings 3 and the stepped parts 4 are alternately formed can be obtained as shown in FIG.

  In addition, while aiming at thickness reduction of the main-body part 2 and enlarging the separation dimension (flame opening pitch) of the adjacent flame opening 3, the case where it is difficult to carry out a fire transfer in the adjacent flame opening 3 depending on an environment is assumed. Therefore, the formation positions of the concave shape a of the upper edge portion and the concave shape a of the lower edge portion may be shifted in the horizontal direction in FIG. 7 and the flame outlet 3 may be shifted in half in the longitudinal direction. That is, since the opening area of one flame mouth 3 is halved, gentle heating can be maintained. Moreover, welding or caulking is performed while overlapping a pair of sheet-like metal members A (symmetrically formed separately with respect to the folding line L in FIG. 7) formed in a desired uneven shape by press working. Thus, the flame openings 3 and the stepped portions 4 may be alternately formed along the overlapping portions.

  The burner head 1 obtained as described above can be applied to a cooking device as shown in FIG. 8, for example. Such a heating cooking apparatus is configured such that a plurality of burner heads 1 according to the present embodiment are arranged side by side in the width direction in a housing part Fa located inside the frame F, and each burner head is connected from the combustion gas supply pipe 5. 1 can be supplied with combustion gas. Thus, by installing a plurality of burner heads 1 in the width direction, it is possible to heat the cooking utensil such as a pan installed in the frame F with an arbitrary heating power.

  According to the above embodiment, since the stepped portion 4 is formed in the longitudinal direction of the main body portion 2 between the adjacent flame openings 3, compared to the stepped portion that protrudes in the width direction of the main body portion 2, While the main-body part 2 can be made thin, a flame can be formed favorably. Moreover, according to this embodiment, the sheet-like metal member A formed in the desired uneven | corrugated shape by pressing is overlapped, and the flame opening 3 and the step part 4 are formed alternately along the overlap part. Therefore, the burner head 1 can be manufactured smoothly by reducing the workability of the sheet metal.

  Although the present embodiment has been described above, the present invention is not limited to this, and the internal channel of the main body and the flame port are communicated with each other while reducing the diameter toward the flame port. It is sufficient that the step portion that can be ejected at the flame opening is formed in the longitudinal direction of the main body portion between the adjacent flame openings. For example, the gradient surfaces 4a and 4b are U-shaped (that is, the gradient surface 4a 4b is not a straight line but a curve or the like), or obtained by another manufacturing method. Further, the burner head 1 according to the present embodiment is formed by molding stainless steel, but may be made of other materials.

  As long as the burner head has a step portion formed in the longitudinal direction of the main body portion between adjacent flame openings, the burner head can be applied to one having a different appearance shape or having another function added.

1 Burner Head 2 Body 3 Flame Port 4 Step

Claims (3)

A main body having an internal flow path through which combustion gas can flow in the longitudinal direction;
A plurality of flame ports formed in the longitudinal direction of the main body, and capable of burning the combustion gas in the internal flow path;
A step portion that allows the internal passage and the flame opening of the main body portion to communicate with each other while reducing the diameter toward the flame opening, and allows the combustion gas in the internal passage to be ejected at the flame opening;
In the burner head equipped with
The burner head according to claim 1, wherein the step portion is formed in a longitudinal direction of the main body portion between the adjacent flame openings.   2. The burner according to claim 1, wherein sheet metal members formed in a desired concavo-convex shape by pressing are overlapped, and the flame openings and stepped portions are alternately formed along the overlapping portions. head.   3. The burner head according to claim 1, wherein the internal flow path is formed so that a sectional area gradually decreases from a fuel gas mixing tube outlet toward a tip. 4.

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