JPH10232004A - Gas burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with widening of a grill and improve carry-over performance by a method wherein a small hole train is formed in a central air-fuel mixture chamber astride two burner port trains formed in two edge parts and a cover plate is arranged above the small hole train with a gap formed therebetween. SOLUTION: Fuel gas is injected through small holes 7 formed in an air-fuel mixture chamber 4. Injected fuel gas resides in a gap between a small hole 7 train and a covering plate 8 and flows over and is ignited by the flames of burner ports train 5 at two edge parts. The ignited flame is propagated from one burner port train 5 to the other burner port train 5 to effect carry- over. Further, since a carry over flame ignited at a gap between the small hole 7 train and the cover plate 8 consumes fuel gas and combustion air in a short time, the flame is fire-extinguished once. When fuel gas gathers, ignition is effected again and ignition and fire extinguishment are repeated until combustion of a gas burner 50 is stopped. Thus, carry-over between the burner port 5 trains is reliably effected by a carry-over part 9 and sufficient coping with widening of a grill is practicable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a gas burner such as a press burner for a grill.

[0002]

2. Description of the Related Art Conventionally, in a grill cooker, FIG.
As shown in FIG. 0, a hot plate 31 is provided on the upper surface of the grill storage 30, and the hot plate 31 is uniformly heated by a burner 35.
A device that heats and cooks a food 36 such as a fish by radiant heat from the hot plate 31 is widely known. In this case, it is important that the heating plate 31 is uniformly heated and the radiation temperature distribution is uniform, which greatly affects the heating temperature unevenness of the food 36. Therefore, as the hot plate heating burner 35, a so-called U-shaped burner that spreads the flame to uniformly heat the hot plate 31 is used. The U-shaped burner 35 is shown in FIG.
As shown in FIG. 2, a pair of press-formed burner upper plates 1 and lower burner plates 2 are overlapped, and a throat 3 for mixing fuel gas and combustion air is provided.
And a mixture chamber 24 having a V-shape.
A flame row 5 is provided at the inner edge of each of 4a, 24b, and a burner flame 6 is provided at the base of the mixture chamber 20a, 20b connected to the flame row 5, and the outer peripheral edge thereof is closed and fixed. . However, recently, the demand for wide grilles having a wider width of the grill warehouse 30 has been increasing, and the widening of the heating range inside the grill warehouse 30 due to the widening of the grill warehouse 30 requires a conventional U-shaped burner 3.
There was a problem just by increasing 5. In other words, the flame spreads away from the center only by extending the space between the flame port rows 5 of the U-shaped burner 35, and the heating near the center of the hot plate is insufficient. Therefore, as shown in FIG. 5, a central mixture chamber communicating with the throat 3 is added to form an E-shaped mixture chamber 4, and the mixture chambers 4a, 4b, and 4c facing each other have inner edges. A gas burner row 5 is provided to disperse the combustion flame to expand the heating range and to compensate for insufficient heating at the center of the hot plate 31.
It has been known. This gas burner 40 is provided with each flame row 5 of the left and right mixture chambers 4a and 4b and each flame port of the right mixture chamber 4c and the middle mixture chamber 4b. A fire burner port 6 is formed so as to be continuous with the row 5, and the fire burner rows 5 are fired. Further, as shown in FIG. 6, a slit 17 is formed in the upper surface of the central mixture chamber 4b to perform a fire transfer between the two rows of flame ports 5 provided on both edges thereof.

[0003]

However, since the gas burner 40 is provided with a slit 17 for a fire transfer in the upper surface of the upper burner plate 1 of the central mixture chamber 4b, the central mixture chamber 4b is provided with the lower burner plate 2b. And the strength is weakened, and the temperature of the perforated portion rises due to the combustion flame of the slit 17 itself and the radiant heat from the hot plate, etc., and the slit 17 is deformed, resulting in combustion failure such as lifting and backfire. There is a problem in durability performance such as generation of a problem. Further, since the slit 17 is formed so as to face upward, there is a problem that impurities drop and the flame opening is clogged, resulting in a fire failure during ignition. For this reason, it is conceivable to increase the slit width. However, this time, the amount of combustion in the slit 17 increases, and in combination with a shortage of air above the burner, poor combustion due to a flashover flame occurs.

[0004] It is an object of the present invention to provide a gas burner which responds to the widening of the grill and has a good fire transfer performance.

[0005]

According to a first aspect of the present invention, there is provided a gas burner, comprising: a throat for mixing a fuel gas and combustion air; a throat communicating with the throat; The upper and lower presser-formed burner upper plates and the lower burner plate are superposed to form three mixture chambers at the left and right sides arranged side by side, and a flame port row is formed at an edge of each of the opposed mixture chambers. In the formed gas burner, the central air-fuel mixture chamber is provided with a small hole row extending over two flame hole rows formed on both edges thereof, and a cover plate is provided above the small hole row with a gap therebetween. The gist is that it is provided.

A gas burner according to a second aspect of the present invention includes a throat for mixing fuel gas and combustion air,
In a gas burner formed by superposing a burner upper plate and a burner lower plate, each of which is formed by press-forming two air-fuel mixture chambers which are communicated with the throat and are provided side by side substantially in parallel at intervals. A row of flame holes is formed on both sides of the hole, and a row of small holes is formed over the two rows of flame holes formed on both sides of the hole, and a gap is provided above the row of small holes. And that a cover plate is provided.

[0007] In the gas burner according to the first aspect of the present invention, fuel gas is ejected from small holes formed in the mixture chamber. The jetted fuel gas accumulates in the gap between the row of small holes and the cover plate, and overflows and is ignited by the flames in the row of flame ports on both edges.
The ignited flame propagates from one row of flame ports to the other row of flame ports and ignites. In addition, the transfer flame ignited in the gap between the row of small holes and the cover plate is extinguished once to consume fuel gas and combustion air in a short time, and when fuel gas is accumulated, it is ignited again and the combustion of the gas burner stops. Repeat the fire extinguishing until
Therefore, the transfer of fire between the rows of flame outlets is ensured, and the gas discharge holes are small holes, so that the strength is not impaired more than necessary. Can be kept. In addition, even if impurities fall onto the burner, the small hole array is protected by the cover plate, so that the small holes are not clogged.

In the gas burner according to the second aspect of the present invention, since the rows of flame ports are provided at the inner and outer edges of the two substantially parallel air-fuel mixture chambers communicating with the throat, respectively, the flame of the rows of flame ports at the inner edge is formed. The vicinity of the center is heated, and the flames in the flame row at the outer edge spread outward. In addition, a fire transfer between the respective flame outlet rows is performed by a fire transfer unit. Therefore, it is possible to sufficiently cope with widening of the grill without using a large burner in which the space between the air-fuel mixture chambers is widened.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of a gas burner of the present invention will be described below. FIG. 1 is an external view of a gas burner as one embodiment of the present invention. FIG. 2 is an enlarged view of the main part. The gas burner 50 includes a throat 3 for mixing the fuel gas and the combustion air with the press-formed burner upper plate 1 and the burner lower plate 2 overlapped with each other, and an E-shaped mixed gas chamber 4 communicating with the throat 3. Is formed, and the outer peripheral edge is closed and fixed. The mixture chamber 4 includes three substantially parallel mixture chambers 4a, 4b, 4c, and a flame port array 5 is provided at the inner edge of each of the opposed mixture chambers 4a, 4b, 4c. Is formed at the base portion of the nozzle so as to be continuous with the flame row 5. In addition, the central mixture chamber 4
The upper surface of b was provided with a fire transfer portion 9 for transferring a fire between the two rows of flame ports 5 provided at both edges thereof.

As shown in FIG. 3, a plurality of small holes 7 formed in the upper surface of the upper burner plate 1 of the central mixture chamber 4b are provided in the fire transfer section 9.
And a cover plate 8 that covers the small hole 7. Multiple small holes 7
Has four holes having a diameter of about 1.4 mm, which are linearly formed at intervals of about 2.0 mm. The cover plate 8 includes a top plate 8a and a fixing plate 8b. The bonding protrusions 10 provided on the burner upper plate 1 are inserted into holes 11 of the fixing plate 8b, and are bonded by spot welding. The gap from the small hole 7 to the top plate 8a is provided to be kept at 1.0 mm.

The gas sent to the throat 3 is divided and introduced into each of the gas mixture chambers 4a, 4b, 4c, and is ejected from each of the flame port rows 5, and the igniter 12 provided near the right gas mixture chamber 4c in the drawing.
Ignited, and the flame was transferred to the opposing flame row 5 by the combustion flame of the flame port 6. In addition, the fire is transferred to the back-to-back burner row 5 provided at both edges of the central mixture chamber 4b.
It is performed by That is, the air-fuel mixture ejected from the small holes 7 is filled between the top plate 8a and the surface of the burner upper plate 1, overflows from the gap, and is ignited by the flame of the flame row 5. The ignited flame propagates through the fire transfer section 9 and transfers to the flame row 5 on the left side. Then, the flame is transferred to the flame row 5 in the left-side air-fuel mixture chamber 4a by the combustion flame of the fire flame 6. Further, the flame ignited in the gap of the fire transfer part 9 is extinguished once because the fuel gas and the combustion air are consumed in a short time, and when the fuel gas is accumulated, it is ignited again and ignited until the gas burner stops burning. repeat.

As described above, according to the gas burner 50 of the present embodiment, the flame port array 5 is connected to the opposing edges of the three air-fuel mixture chambers 4a, 4b, 4c to spread the flame over a wide range. As shown in FIG. 7, the three air-fuel mixture chambers 4a, 4b, 4c connected to the throat 3
When it is installed horizontally from the back to the front and burned,
Insufficient heating at the center 1 does not occur. In addition, the fire of the opposing burner row 5 is
The fire of the back-to-back flame port row 5 provided at both edges of the central mixture chamber 4b is reliably performed by the fire transfer unit 9. Also,
Since the gas ejection small holes 7 of the fire transfer section 9 have a diameter of about 1.4 mm, the strength of the central mixture chamber 4b is not unnecessarily impaired. Further, since the flame of the fire transfer portion 9 repeats ignition and extinguishing, the small holes 7 and the cover plate 8 of the fire transfer portion 9 can be kept at a low temperature, and the durability is improved. Further, even if the impurities fall onto the air-fuel mixture chamber 4b of the burner, the small holes 7 are protected by the cover plate 8, so that no clogging occurs.

Next, a gas burner as another embodiment will be described with reference to FIG. This embodiment is common except for the air-fuel mixture chamber of the first embodiment, and therefore, the common parts are denoted by the same reference numerals and description thereof is omitted. Mixture chamber 20
The U-shaped air-fuel mixture chambers 20a and 20b are formed in a U-shape.
A fire transfer section 9 is provided before and after 20b. Since the flame port rows 5 are connected to both edges of the two U-shaped mixture chambers, as shown in FIG. Then, the flame in the flame row 5 at the outer edge burns outward. Therefore, even if the inside of the grill storage becomes wide, the heating range can be expanded without expanding the space between the air-fuel mixture chambers 20a and 20b of the burner. Therefore, the heating near the center of the hot plate 31 does not decrease, and there is no need to increase the size of the burner, so that the heating distribution can be made uniform without impairing the productivity. In addition, the transfer of fire between each row of flame outlets is reliably performed by the fire transfer section, which can sufficiently cope with widening of the grill.

The embodiments of the present invention have been described above.
The present invention is not limited to these embodiments at all, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention.

[0015]

As described in detail above, according to the gas burner of the present invention, the flames are diffused over a wide area by connecting the rows of flame ports to the opposed edges of the three mixture chambers, respectively. In addition to being able to cope with the widening of the grill, the fire transfer section ensures the transfer of fire between the rows of flame outlets, and the gas ejection holes are small holes, so that the strength of the mixture chamber will not be impaired more than necessary. . Therefore, the fire transfer performance between the rows of flame ports is improved without impairing the durability performance of the burner.

In the gas burner according to the present invention, the flames of the rows of flame ports connected to both edges of the two air-fuel mixture chambers, that is, the flames of the rows of flame ports at the inner edge and the flames at the outer edge, are provided. The heating range can be widened by the flames in the row of burner rows, and the fire transfer between each row of burner rows is reliably performed by the fire transfer section. Therefore, it is possible to sufficiently cope with the widening of the grill without using a large burner in which the space between the air-fuel mixture chambers is widened.

[Brief description of the drawings]

FIG. 1 is an external view of a gas burner of the present embodiment.

FIG. 2 is an enlarged view of a main part of the gas burner of the present embodiment.

FIG. 3 is an exploded perspective view of a main part of the gas burner of the present embodiment.

FIG. 4 is an external view of a gas burner of another embodiment.

FIG. 5 is an external view of a conventional gas burner.

FIG. 6 is an enlarged view of a main part of a conventional gas burner.

FIG. 7 is a view showing a relative position of a gas burner according to the present embodiment in a grill storage.

FIG. 8 is a view showing a relative position of a gas burner according to another embodiment in a grill storage.

FIG. 9 is an external view of a conventional gas burner.

FIG. 10 is a view showing a relative position of a conventional gas burner in a grill storage.

[Explanation of symbols]

1 ... burner upper plate, 2 ... burner lower plate, 3 ... throat,
4 ... mixture chamber, 4a, 4b, 4c ... mixture chamber, 5 ...
Flame row, 6: Fire transfer flame port, 7: Small hole, 8: Cover plate,
8a ... top plate, 8b ... fixed plate, 9 ... fire transfer part,

Claims (2)

[Claims] 1. A burner formed by press-forming a throat for mixing a fuel gas and combustion air, and three right and left center air-fuel mixture chambers communicating with the throat and provided side by side substantially in parallel at intervals. In a gas burner formed by stacking a plate and a burner lower plate on top of each other and forming an array of flame ports at the edges of the respective mixture chambers facing each other, the central mixture chamber is formed at both edges of the gas mixture chamber. A gas burner comprising: a row of small holes extending over two rows of flame holes; and a cover plate provided above the small row of holes via a gap. 2. A burner upper plate formed by press-forming a throat for mixing fuel gas and combustion air, and two air-fuel mixture chambers communicating with the throat and provided side by side substantially in parallel at intervals. In a gas burner formed by overlapping a burner lower plate, a row of flame holes is formed at both edges of each of the above-mentioned mixture chambers, and a small row is formed over two rows of flame holes formed at each of the both edges. A gas burner comprising: a hole array; and a cover plate provided above the small hole array with a gap therebetween.