JP2017075717A - Grill burner and grill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve pressure distribution and miscibility of mixture gas.SOLUTION: A grill burner 21 includes a throat part 26 to which mixture gas of fuel gas and combustion air is supplied, and a flat chamber part 27 formed so as to communicate with a downstream end of the throat part 26. A throttle 34 with an X shape in a plan view is dented at the chamber part 27, and thereby on an inner surface of the chamber part 27, erected is an inner wall part 36 with a V shape in a plan view, which is arranged in an extending direction from a center side of the chamber 27 toward a communication port 33 with the throat part 26, and with which the mixture gas flowing from the communication port 33 collides.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a grill burner installed in a grill such as a built-in stove, and a grill provided with the grill burner.

The grill burner is connected to a gas pipe and is supplied with a mixed gas of fuel gas and combustion air, and is connected to the downstream end of the throat part, and has a flat chamber with a plurality of flame ports formed on the lower surface. It is installed in the upper part of the grill cabinet with the flame front forming face down.
Such a flat grill burner is formed by caulking and joining an upper member and a lower member obtained by press-molding a metal plate such as an aluminum plate, as disclosed in Patent Document 1, for example. In particular, in this case, a rectangular diaphragm is provided in the center of the upper member in order to adjust the surplus when pressed, or a rectangular annular diaphragm rib for increasing the rigidity of the chamber. And an invention in which a reinforcing diaphragm including radial diaphragm ribs is provided at the center.

Japanese Patent No. 5158812

  In the above-described conventional grill burner, the short side portion of the rectangular throttle or the annular throttle rib is formed in parallel with the short side of the chamber portion, so the mixed gas flowing into the chamber portion from the throat portion is divided into right and left by the short side portion. The mixture tends to stay and the pressure distribution and mixing properties of the mixed gas deteriorate. Particularly, in recent years, the chamber portion tends to become larger with an increase in the size of the grill. However, the mixed gas does not easily reach the end portion of the chamber portion far from the throat portion.

  Therefore, an object of the present invention is to provide a grill burner and a grill that can improve the pressure distribution and mixing property of the mixed gas.

In order to achieve the above object, the invention according to claim 1 is a flat throat formed in communication with a throat portion to which a mixed gas of fuel gas and combustion air is supplied and a downstream end of the throat portion. A sheet metal grill burner comprising a plurality of flame openings on the lower surface of the chamber part,
At least a V-shaped collision part in a plan view is arranged on the inner surface of the chamber part so as to expand from the center side of the chamber part toward the communication port side with the throat part, and the mixed gas flowing from the communication port collides with it. It is characterized by being erected.
According to a second aspect of the present invention, in the configuration of the first aspect, the collision portion is formed by a diaphragm formed in the chamber portion by press working.
According to a third aspect of the present invention, in the configuration of the second aspect, the diaphragm is X-shaped in plan view.
According to a fourth aspect of the present invention, in the structure according to any one of the first to third aspects, the upper plate in which the upper portion of the throat portion and the chamber portion is pressed, and the lower portion of the throat portion and the chamber portion are pressed. The collision part is formed on the upper plate.
In order to achieve the above object, the invention according to claim 5 is a grill, and the grill burner according to any one of claims 1 to 4 is installed in the grill box with the flame opening facing downward. It is characterized by that.

According to the first and fifth aspects of the present invention, since at least the V-shaped collision portion in plan view is erected on the inner surface of the chamber portion, the mixed gas that has collided with the collision portion is left and right and front side of the chamber portion. Flows in a distributed manner. Therefore, the pressure distribution and mixing property of the mixed gas can be improved.
According to the second aspect of the invention, in addition to the above-described effect, the collision part is formed by drawing, so that the collision part can be formed simultaneously with the press working of the chamber part.
According to the third aspect of the invention, in addition to the above effect, the diaphragm has an X-shape in plan view, so that a reinforcing effect of the chamber portion can be expected.
According to the invention described in claim 4, in addition to the above-described effect, the grill burner is formed by combining the upper plate and the lower plate, and the collision portion is formed on the upper plate. The part can be formed easily.

It is a longitudinal cross-sectional view of the grill part in a built-in stove. It is a cross-sectional view of a grill. (A) is a top view of a grill burner, (B) is a side view. It is a bottom view of a grill burner. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is a top view of the grill burner of the example of a change.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view of a grill portion in a built-in stove. This built-in stove 1 has a pair of left and right (the left side of FIG. 1 is the front) stove 3 and 3 and a grill 4 positioned between the stoves 3 and 3 in the body 2. The stove 3 includes a stove burner 5 to which fuel gas is supplied via a gas amount adjusting device (not shown), and the burner body 6 of the stove burner 5 is exposed upward from the top plate 7 of the vessel 2 so that the burner body 6 is exposed. A burner cap 8 forming a flame opening is placed on the top. 9 is the five virtues.

  As shown also in FIG. 2, the grill 4 is a box-shaped grill box 10 that is long in the front and rear directions surrounded by the left and right side plates 11, 11, the bottom plate 12, the top plate 13 that is slightly inclined downwardly, and the rear plate 14. On the top plate 13, a grill burner 21 described later is installed, and on the bottom plate 12, a tray 15 that supports the grill 16 is placed. A handle 17 is attached to the front end of the tray 15, and the tray 15 can be taken in and out by the handle 17. Reference numeral 18 denotes a grill door that opens and closes when the tray 15 is put in and out. In addition, an exhaust passage 19 that is inclined obliquely upward rearward is formed on the rear upper side of the grill cabinet 10, and an upper end of the exhaust passage 19 is connected to an exhaust port 20 provided in the rear portion of the top plate 7.

As shown in FIG. 3, the grill burner 21 is a flat body having a rectangular shape in plan view, and is made of a metal such as aluminum and overlaps an upper plate 22 and a lower plate 23 having substantially the same shape in plan view. The parts 24, 24 are joined by caulking. In the flange portion 24, screw holes 25, 25,... For attachment to the top plate 13 of the grill cabinet 10 are formed.
The grill burner 21 is formed with a throat portion 26 and a chamber portion 27. First, the throat portion 26 is formed in a tubular shape on one short side of the grill burner 21 in a direction parallel to the short side, and one end of the throat portion 26 is projected at right angles from the adjacent long side together with the flange portion 24. The projecting end of the throat portion 26 is covered with a damper cap 28 (FIG. 2) having a gas introduction hole at the center and a primary air introduction hole around it, and the flange portion 24 projects on both sides of the throat portion 26. A positioning plate 29 for fixing the gas nozzle coaxially to the gas introduction hole of the damper cap 28 is fixed. The other end of the throat portion 26 is a bent portion 30 that is bent at a right angle toward the chamber portion 27, and the bent portion 30 is press-molded only on the upper plate 22.

The chamber portion 27 is a flat hollow portion having a rectangular shape in plan view that is slightly smaller than the outer shape of the grill burner 21. The chamber portion 27 is formed by pressing the deep bottom upper bulging portion 31 formed on the upper plate 22 and the lower plate 23. The bent portion 30 of the throat portion 26 is connected to the short side of the upper bulged portion 31 of the upper plate 22 to form a communication port 33. .
Further, the upper surface of the upper bulging portion 31 is provided with a throttle 34 having an X-shape in plan view, which is recessed shallower than the upper bulging portion 31, so that the space in the thickness direction of the chamber portion 27 has the shape of the throttle 34. Narrow along. However, a circular convex portion 35 for adjusting a surplus at the time of press working is left in the center of the diaphragm 34.
The throttle 34 is formed at a position overlapping the communication port 33 in the long side direction of the chamber portion 27, and serves as a collision portion that protrudes into the chamber portion 27 on the communication port 33 side in a V shape in plan view. The inner wall portion 36 is disposed so as to expand toward the communication port 33. Therefore, most of the mixed gas flowing into the chamber portion 27 from the communication port 33 collides with the inner wall portion 36.

  On the other hand, the lower bulging portion 32 of the lower plate 23 has a U shape along the short side on the opposite side and a pair of long sides connected thereto, except for the short side on the communication port 33 side, as shown in FIG. A plurality of flame openings 37, 37,... Are formed in the shape forming range. The formation range of the flame opening 37 does not overlap the diaphragm 34 of the upper plate 22 in the thickness direction. In addition, on the lower surface of the lower bulging portion 32, a pair of strip-shaped lower diaphragms 38, 38 whose both ends in the longitudinal direction are semicircular are formed on the inner side of the formation range of the flame opening 37. It is shallower than 32 and is recessed. The lower diaphragm 38 is for preventing deformation of the chamber portion 27.

  In the grill burner 21 configured as described above, the chamber portion 27 with the flame opening 37 on the lower side is accommodated in the opening 39 provided on the top plate 13 from the upper side of the top plate 13 of the grill cabinet 10, and the throat portion 26 is provided. It is installed in the direction of the rear side, and is attached to the top plate 13 with the screws 40, 40... Inclined downward using the screw holes 25 of the flange portion 24. When the gas nozzle 42 of the gas pipe 41 piped to the grill 4 is fixed to the positioning plate 29, the opening 39 is closed as shown in FIGS. 10 is installed. 43 is an ignition electrode, and 44 is a thermocouple.

In this grill 4, when an operation button (not shown) provided on the front panel of the container body 2 is pressed, the fuel gas supplied to the gas pipe 41 is ejected from the gas nozzle 42, and the damper cap 28 of the throat portion 26 together with the combustion air. The mixed gas of fuel gas and combustion air flows from the communication port 33 into the chamber portion 27 through the throat portion 26. The mixed gas that has flowed into the chamber portion 27 is ejected from each flame mouth 37 and burns in the formation range of the flame mouth 37 by the discharge of the ignition electrode 43. Therefore, the food to be cooked on the grill 16 is cooked.
Here, the mixed gas that has flowed into the chamber portion 27 from the communication port 33 collides with the V-shaped inner wall portion 36 of the throttle 34 and stays inside the inner wall portion 36. Therefore, the mixed gas that subsequently flows in collides with the mixed gas staying inside the inner wall portion 36, and most of the mixed gas overflows evenly to the left and right of the chamber portion 27 as shown by the thick dotted arrows in FIG. To the front. The mixing promotion effect is produced by the collision between the mixed gases. Further, due to the pressure of the mixed gas flowing in subsequently, a part of the mixed gas staying inside the inner wall portion 36 moves to the center side along the inclination of the inner wall portion 36 as indicated by a thin dotted arrow. It is pushed out to the lower side of the diaphragm 34 and flows to the front side while spreading in a fan shape to the left and right beyond the diaphragm 34. Therefore, the mixed gas is dispersed and spreads to the left and right and the front side of the chamber portion 27, and the pressure distribution in the formation range of the flame opening 37 becomes uniform.

Thus, according to the grill burner 21 and the grill 4 of the said form, it arrange | positions in the direction which spreads toward the communicating port 33 side with the throat part 26 from the center side of the chamber part 27 on the inner surface of the chamber part 27, By providing the V-shaped inner wall portion 36 in plan view where the mixed gas flowing in from the communication port 33 collides, the pressure distribution and mixing property of the mixed gas can be improved.
In particular, here, the inner wall portion 36 is formed by the diaphragm 34 pressed into the chamber portion 27, so that the collision portion can be formed simultaneously with the pressing of the chamber portion 27.
In addition, since the diaphragm 34 has an X shape in plan view, the reinforcing effect of the chamber portion 27 can be expected.
Further, the grill burner 21 is connected by caulking the upper plate 22 in which the upper portion of the throat portion 26 and the chamber portion 27 is pressed and the lower plate 23 in which the lower portion of the throat portion 26 and the chamber portion 27 is pressed. Since the inner wall portion 36 is formed on the upper plate 22, the collision portion can be easily formed using only the upper plate 22.

In the above embodiment, the diaphragm is formed in an X shape in plan view. However, a diaphragm 34A having a V shape in plan view is formed only on the side of the communication port 33, as in the burner 21A shown in FIG. May be. Also in this case, the mixed gas collides with the mixed gas staying inside the inner wall portion 36, spreads left and right, and is uniformly dispersed in the chamber portion 27.
Moreover, in the said form, although the communication port 33 has shifted | deviated to the right with respect to the center of V shape of the inner wall part 36, if the connection port is located in the width | variety of V shape, you may shift | deviate to the left. In addition, a communication port may be arranged at the center of the V shape.

Further, the V-shape in plan view of the collision portion is not limited to a strict V-shape, the tip portion is rounded, the left and right inclined portions that are expanded are not linear, but are arc-shaped or arc-shaped, Even if the lengths and angles of the inclined portions are different, they can be appropriately modified as long as they produce an action of dispersing the flowing mixed gas in a fan shape to the left and right while guiding it to the center side. The depth and width of the diaphragm are not limited to the above forms.
The collision part is not limited to being formed by a diaphragm, but can also be formed by standing up a V-shaped rib or a wall body on the inner surface of the chamber part.

  In addition, the structure other than the aperture and the collision part, such as the form of the throat part or the flame outlet, is not limited to the above form, and can be appropriately changed. Moreover, although the said form demonstrated by the grill provided in the built-in stove, this invention is applicable also to the grill provided in the table stove.

  1 ・ ・ Built-in stove, 2 ・ ・ Body, 3 ・ ・ Stove, 4 ・ Grill, 5 ・ ・ Combo burner, 10 ・ ・ Grill storage, 13 ・ ・ Top plate, 21,21A ・ ・ Grill burner, 22 ・ ・Upper plate, 23 ... Lower plate, 26 ... Throat part, 27 ... Chamber part, 31 ... Upper bulge part, 32 ... Lower bulge part, 33 ... Communication port, 34, 34A ... , 36 ... inner wall, 37 ... flame outlet.

Claims (5)

A throat portion to which a mixed gas of fuel gas and combustion air is supplied, and a flat chamber portion formed in communication with the downstream end of the throat portion. A sheet metal grill burner with a flame opening,
Arranged on the inner surface of the chamber portion so as to expand from the center side of the chamber portion toward the communication port side with the throat portion, and the mixed gas flowing in from the communication port collides with at least a V-shape in plan view A grill burner characterized in that a cylindrical collision part is erected.   2. The grill burner according to claim 1, wherein the collision portion is formed of a diaphragm formed by press working on the chamber portion.   The grill burner according to claim 2, wherein the diaphragm has an X-shape in a plan view.   An upper plate obtained by pressing the upper part of the throat part and the chamber part and a lower plate obtained by pressing the lower part of the throat part and the chamber part are combined, and the collision part is formed by the upper part. 4. The grill burner according to claim 1, wherein the grill burner is formed on a plate.   A grill formed by installing the grill burner according to any one of claims 1 to 4 in a grill cabinet with the flame opening facing downward.

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