JPH11218328A - Gas grill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To spread a hot gas of a Bunsen type burner to a center with a simple constitution. SOLUTION: In the case of supplying a fuel gas to a lower burner 40, a primary air is sucked at the time of injecting fuel gases from nozzles 82, 83, 84, 85, and mixed. Accordingly, the primary air suction amount as a whole is increased, and its mixing ratio is enhanced. Thus, a temperature of a flame formed at cooling burner hole rows 51, 61 is raised, and its inner flame becomes stable, and its rise is suppressed to a shape extended in an injecting direction of the mixed gas so that a hot gas easily arrives at the center.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas grill provided with a Bunsen-type burner that forms a row of flame holes that open toward the center on both sides of a heating chamber.

[0002]

2. Description of the Related Art Conventionally, a gas grill for heating an object to be cooked such as fish in a heating cabinet has been known. For example, as shown in FIG. 4, such a gas grill includes a grill 20 on which the object to be cooked F is placed in the heating cabinet 10, and an all-primary pneumatic system that burns fuel gas on the left and right sides of the heating cabinet 10 above the grill 20. An upper burner 30 and a Bunsen-type lower burner 70 that burns fuel gas below and to the left and right of the grill 20 are provided.

The lower burner 70 is a Bunsen type burner in which air required for combustion is supplied by primary air and secondary air.
As shown in the figure, a cooking flame hole array 71 opening toward the center is formed along the depth direction on opposite sides of the U-shaped inner edge portion along the depth direction, and a U-shaped hollow portion 72 and a mixing portion 73 are formed. Thus, a flow path for guiding the fuel gas to the cooking flame hole row 71 is formed. A gas pipe 80 for supplying a fuel gas to the lower burner 70 is provided at a fuel inlet of the mixing section 73, and a nozzle 81 for injecting gas into the mixing section 73 is mounted at a tip of the gas pipe 80. . Further, a damper 74 for adjusting the opening area of the primary air suction port is provided at a portion where the nozzle 81 of the fuel suction port of the mixing section 73 is inserted. Therefore, when gas is supplied from the gas pipe 80 and injected by the nozzle 81, primary air is sucked from the primary air suction port of the damper 74, mixed in the mixing section 73, and then passed through the hollow section 72 to form a cooking flame hole array. It is led to 71. Also,
The cooking flame hole array 71 is formed by inclining the jetting direction of the mixed gas downward so that the hot air due to the flame can easily reach the center.

[0004]

As described above, although the cooking flame hole array 71 is inclined downward, it is difficult for hot air to sufficiently spread to the center by itself, and it is easy for the central part to burn harder than both end parts. . In particular, recently, it has been required to increase the width of the heating chamber 10 to increase the space inside the chamber. However, as the distance between the opposed cooking flame hole rows 71 becomes longer, it becomes more difficult for hot air to spread to the center. Burns worse. An object of the present invention is to solve the above-mentioned problems and to spread the hot air of the Bunsen-type burner to the center with a simple configuration.

[0005]

According to a first aspect of the present invention, there is provided a gas grill for storing and heating an object to be cooked, and a center for heating on the left and right sides of the heating chamber. A Bunsen-type burner that forms a row of open flame holes along the depth direction, and is provided facing a fuel inlet of the Bunsen-type burner, and is supplied as a mixed gas in which primary air is mixed by injecting fuel gas. The left and right Bunsen-type burners each have a plurality of fuel inlets, and a plurality of nozzles facing each fuel inlet are supplied with a mixed gas, and the mixed gas is supplied to the Bunsen-type burner. The gist of the invention is that a plurality of gas flow paths are respectively formed to lead to independent areas of a row of flame holes formed in the burner.

According to a second aspect of the present invention, there is provided a gas grill according to the first aspect.
The gist is that the plurality of gas passages are integrally formed by the left and right Bunsen burners.

In the gas grill according to the first aspect of the present invention, the left and right Bunsen-type burners each have a plurality of fuel inlets, and the combustion gas is injected by a plurality of nozzles facing each fuel inlet. , And supplied as a mixed gas in which primary air is mixed. As described above, since the primary air is sucked in with the injection of the fuel gas from the plurality of nozzles, the primary air suction amount as a whole is the sum of them, so that the mixing ratio can be increased. .
Therefore, the flame formed in the row of flame holes has a high flame temperature, the internal flame is firm, its rise is suppressed, and it has a shape that extends toward the center, and hot air spreads to the center and the temperature distribution is good. Becomes

Further, the present invention has the above-mentioned structure.
In the described gas grill, a plurality of gas flow paths are integrally formed by the left and right Bunsen burners, respectively, so that the structure can be simplified.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the structure and operation of the present invention described above, a preferred embodiment of the gas grill of the present invention will be described below. FIG. 1 is a schematic configuration diagram of a gas grill as one embodiment of the present invention. This gas grill has the same basic configuration as the gas grill shown in the conventional example (FIG. 4), but differs mainly in the configuration of the lower burner portion. Other overlapping points are denoted by the same reference numerals and description thereof is omitted.

The upper burner 30 is an all-primary pneumatic burner having a combustion surface formed by penetrating a large number of small flame holes in a plane plate of porous ceramics, and inhaling most of air required for combustion as primary air. The combustion surface is provided slightly inclined with respect to the vertical plane.

The lower burner 40 is a Bunsen type burner in which air required for combustion is supplied by primary air and secondary air.
As shown in the figure, the burner body is composed of two burner bodies 50 and 60 having a symmetric shape. The configuration of the burner body 50 will be described below, and the description of the symmetric burner body 60 will be omitted.

The burner body 50 is formed by laminating two metal plates each having a recess of a predetermined shape. The burner body 50 is provided with a cooking flame hole array 51 opening toward the center of the heating chamber 10 along a depth direction on the center side. Formed. In addition, a hollow portion 52 is formed as a flow path for guiding the fuel gas to the cooking flame hole array 51, and a partition plate 53 is provided in the hollow portion 52 to provide two spaces 52a, 52a.
52b. Furthermore, each space 52a,
Two mixing portions 54 and 55 communicating with 52b are formed,
Further, nozzles 82 and 83 for injecting fuel gas to the respective mixing sections 54 and 55 are provided. Further, dampers 56, 57 for adjusting the opening area of the primary air inlet are provided in the insertion portions of the nozzles 82, 83 of the fuel inlets of the respective mixing sections 54, 55. Therefore, when the gas is supplied from the gas pipe 80 and is injected by the nozzles 82 and 83, the primary air is sucked from the primary air suction ports of the dampers 56 and 57, and the primary air is mixed by the mixing units 54 and 55, and then the hollow air is mixed. Each space 52a, 5 of the part 52
It is led to the cooking flame hole row 51 through 2b. In addition, the cooking flame hole array 51 is formed such that the jet direction of the mixed gas is inclined downward, so that the hot air due to the flame can easily reach the center. It is not necessary to completely separate the inside of the hollow portion 52 by the partition plate 53, and there is no problem even if a gap is slightly formed. That is, any configuration that prevents the flow of the mixed gas in the hollow portion 52 from being disturbed may be used.

Here, the reason why the supply of the fuel gas is performed by dividing the fuel gas into two in each of the burners 50 and 60 will be described. Normally, the amount of primary air suction is adjusted by the opening area of the primary air suction port of the damper.However, the amount of primary air suction accompanying the injection of fuel gas from the nozzle is limited, and even if the damper is fully opened, The primary air volume cannot be increased any further. However, if the primary air is forcibly sucked in using a fan or the like, the cost increases. Therefore, the supply of the fuel gas is divided into two in each of the burners 50, 60, and the nozzles 82, 83, 8
By injecting the primary gas by injecting the fuel gas into each of the fuel cells 4 and 85, the primary air intake amount as a whole is increased.

As shown in FIG. 3, an exhaust passage 90 opened upward is provided at the back of the heating chamber 10. An upper communication port 91 and a lower communication port 92 for communicating the heating chamber 10 and the exhaust passage 90 are formed at the middle position and the lower position of the rear surface of the heating chamber 10. The upper communication port 91 has an upper end located below the upper end of the flame forming surface of the upper burner 30 and above the grill 20, and a lower end thereof located at the lower burner 40.
Is formed at a middle position above the lower end of the flame hole forming surface. Further, the lower communication port 92 is formed at a lower position where the upper end is lower than the upper end of the flame forming surface of the lower burner 40 and the lower end is near the lower end of the heating chamber 10.

With such a configuration, when the fuel gas is supplied to the lower burner 40, the respective nozzles 82, 8
The primary air is sucked and mixed with the injection of the fuel gas from 3, 84, 85. Therefore, the primary air suction amount as a whole increases, and the mixing ratio increases. As a result, the flame formed in the cooking flame hole rows 51 and 61 has a high flame temperature, and the internal flame is firmly raised. Is suppressed and the shape extends in the ejection direction of the mixed gas, so that the hot air can easily reach the center.

The high-temperature exhaust gas generated in the upper burner 30 during cooking is temporarily stored in the upper portion of the heating chamber 10 and is connected to the upper communication port 91.
, The heating effect on the object to be cooked F by the exhaust gas can be enhanced. Further, since the exhaust gas from the upper burner 30 overflows to the upper communication port 91 above the lower burner 40, the influence on the combustion in the lower burner 40 can be reduced. On the other hand, due to the effect that the exhaust gas from the upper burner 30 stays in the upper part of the heating chamber 10, the high-temperature exhaust gas generated in the lower burner 40 heats the object F to be cooked and flows to the lower communication port 92. It becomes easy to spread to the part, and the temperature distribution below the grill 20 can be made more uniform.

As described above, according to the gas grill of the present embodiment, by increasing the mixing ratio of the primary air, the flame temperature is increased and the hot air is extended to the center in a shape extending in the fuel gas ejection direction. Since it is possible to spread the food, it is possible to uniformly heat the object to be cooked and reduce uneven grilling. Therefore, even if the width of the heating chamber 10 is widened, the heating chamber 10 can be uniformly heated to the center.
In particular, the lower burner 40 is effective because it must be disposed on the side surface so that grilled oil and the like from the object to be cooked F do not drop into the opening of the row of flame holes. In addition, the cooking flame row 51,
Since the hollow portion 52 and the mixing portions 54 and 55 are integrally formed, the structure can be simplified, and further, since it is not necessary to use a fan or the like to increase the primary air suction amount,
It can be realized at relatively low cost.

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. For example, the inclinations of the upper burner 30 and the lower burner 40 are not limited to those in the present embodiment, but can be changed as appropriate. Further, in the present embodiment, the lower burner 40 is formed separately from the left and right, but may be formed integrally. Further, in this embodiment, the case where the Bunsen type burner is used as the lower burner 40 of the double-sided gas grill is described. However, the present invention is not limited to this. For example, it may be used as the upper burner of the single-sided gas grill.

[0019]

As described in detail above, claim 1 of the present invention
According to the described gas grill, by increasing the primary air intake amount, the mixing ratio of the primary air is increased, so that the flame temperature can be increased and the hot air can be spread to the center and spread to the center. In addition, the object to be cooked can be uniformly heated to reduce uneven grilling. Therefore, even if the heating chamber has a wide width, it can be uniformly heated to the center. In particular, the configuration in which the Bunsen-type burner is provided below the object to be cooked is effective because grilled oil and the like from the object to be cooked must be arranged on the side surface so as not to drop into the opening portion of the row of flame holes. Further, since it is not necessary to use a fan or the like to increase the intake amount of the primary air, it can be realized at a relatively low cost.

Further, according to the gas grill of the present invention, the structure can be simplified and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a gas grill as one embodiment.

FIG. 2 is an explanatory diagram of a lower burner.

FIG. 3 is a cross-sectional view of the gas grill as viewed from a side.

FIG. 4 is a schematic configuration diagram of a gas grill as a conventional example.

FIG. 5 is an explanatory diagram of a lower burner.

[Explanation of symbols]

10: heating chamber, 30: upper burner, 40: lower burner,
50, 60: Burner body, 51, 61: Flame hole array for cooking.

Claims (2)

[Claims] 1. A heating chamber for storing and heating an object to be cooked, a Bunsen-type burner forming a row of flame holes opening toward the center on both left and right sides of the heating chamber along a depth direction, It is provided facing the fuel inlet of the Bunsen type burner,
In a gas grill, comprising: a nozzle for supplying a mixed gas obtained by mixing primary air by injecting a fuel gas, the left and right Bunsen-type burners each include a plurality of fuel inlets, and a plurality of fuel inlets facing each fuel inlet. A gas grill, wherein a plurality of gas flow paths are formed, each of which is supplied with a mixed gas by the nozzles, and guides the mixed gas to independent areas of a row of flame holes formed in the Bunsen-type burner. 2. The gas grill according to claim 1, wherein the plurality of gas flow paths are integrally formed by the left and right Bunsen burners.