JP2000051092A - Gas grill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To illuminate a grill shed by a simple configuration. SOLUTION: A burner plate 14 provided on a burner in a grill shed is a thick plate made to ceramics, and a plurality of flame holes 15, 15,... directed from a rear surface toward the inside of the grill shed are drilled and provided at an equal interval. Projections 16, 16,... each having a diamond-shaped plane and whose center protrudes are erected at an equal interval on a surface thereof, and the flame holes 15, 15,... are opened around respective projection 16 and its plane, respectively. Moreover, a height H of each projection 16 is 1.3 mm.

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 on a table stove or the like and for cooking food in a grill storage by a burner.

[0002]

2. Description of the Related Art As a burner provided in the gas grill, there is a burner in which a burner plate having a plurality of flame holes formed in a ceramic plate is attached to a surface of a box-shaped burner body. The fuel gas supplied to the burner is ejected from the flame holes of the burner plate and ignited, and burns as a short flame near the surface of the burner plate. by the way,
In a gas grill provided with such a burner, lighting means may be provided in the grill storage so that the cooked state of the cooked product can be easily checked. For example, Japanese Patent Application Laid-Open No. H08-1143
No. 30, JP-A-8-191766, a luminous body or gas mantle mainly composed of thorium, cerium or the like is provided in a grill cabinet, and this is heated by a burner at the same time as cooking, so that heat energy is increased. There is disclosed an invention in which a light-emitting body or the like that receives the light emits light so that the inside of the grill storage can be illuminated.

[0003]

However, the use of the above luminous body or the like leads to an increase in cost because the luminous body itself is expensive and a mechanism for supporting the luminous body is separately required. In particular, since the luminous body such as thorium has a short life, the luminous body needs to be frequently replaced, and the usability deteriorates. Also, since the irradiation by the light emitter is partial,
Only a part becomes bright, and it does not reach to make the whole inside of the grill cabinet bright. Therefore, in consideration of such costs, ease of use, lighting effects, and the like, it is conceivable to use the burner plate itself for lighting, but in normal combustion, although the surface is glowing to some extent, the inside of the grill chamber can be sufficiently illuminated. Brightness cannot be obtained. Therefore, it is possible to make the entire surface of the burner plate glow red by adjusting the gas input and air volume. However, in this case, the temperature of the entire burner plate rises too much and the flame backs (wraps around the back side of the burner plate). Would.

In view of the above, the first aspect of the present invention is to provide an illuminating means which is excellent in terms of cost, ease of use, and illumination effect by utilizing a burner plate itself without using a light-emitting body or the like, and to provide an appropriate lighting means which does not cause flame back. It is an object of the present invention to provide a gas grill that can be configured in a state.

[0005]

In order to achieve the above object, according to the present invention, the burner plate includes:
A glowing means for glowing the surface at a temperature of 850 ° C. or higher is provided, and the inside of the grill storage can be illuminated by light emission by the glow. According to a second aspect of the present invention, in addition to the object of the first aspect, in order to easily realize the glowing means, the glowing means has a burner plate having a porosity of 66% or more. is there.

[0006] The invention described in claim 3 is the invention according to claim 1 or 2.
In addition to the above-mentioned purpose, in order to realize more reliable and effective red-hot means, the red-hot means is provided on the surface of the burner plate and has a height of 1.3 mm or more from the surface to the tip. , And a flame hole arranged around the projection. According to a fourth aspect of the present invention, in addition to the object of the third aspect, a flame hole is also formed in the projection in order to reduce the heat capacity of the projection and obtain a more effective lighting effect. The invention described in claim 5 provides, in addition to the object of claim 3 or 4,
In order to maintain the durability of the burner plate and effectively prevent the back of the flame, the area of the protrusion occupying the surface of the burner plate is set to 50% or less of the total area of the flame holes. The invention according to claim 6 provides the burner plate according to any one of claims 1 to 5, in order to prevent the ceramic powder from dropping into the food and to effectively prevent the back of the flame. It is provided horizontally on the side surface inside the grill storage.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory vertical sectional view of a gas grill 1 provided on a table stove. In a lower part of a grill cabinet 2, a saucer 4 containing a grill 3 on which a food F is placed is provided. A handle 5 is integrally attached to the front (left side in FIG. 1). A grill door 6 that can open and close the front of the grill storage 2 is provided above the handle 5 with a support shaft 7.
When the handle 5 of the tray 4 is gripped and moved forward, the grille door 6 moves upward with the support shaft 7 as a center. To open the front of the grill storage 2 and the tray 4 moves forward and is pulled out of the grill storage 2 until it comes into contact with a stopper (not shown). Further, the grill door 6 has a viewing window 9 formed of a transparent glass plate.

On the other hand, above the tray 4, a burner 10 is provided. The burner 10 includes a box-shaped burner main body 12 fixed to a ceiling plate 11, and a burner plate 14 attached to an opening formed on a lower surface of the burner main body 12 via a gasket 13 such as asbestos. .
The burner plate 14 is a thick plate made of ceramic, and as shown in FIG. 2, a plurality of flame holes 15, 15,... Are provided on the surface, and projections 16, 16,... Having a flat rhombus shape and projecting at the center are erected at equal intervals throughout the entire surface, and the flame holes 15, 15,. 16 and open around the plane. still,
The burner plate 14 has a surface dimension of 93.5 mm × 134.
mm, the diameter of each flame hole 15 is 1.25 mm, the total number of flame holes 15 is 4156, and the height H to the center of the protrusion 16 is 1.3 mm.

In the gas grill 1 configured as described above, the fuel gas mixed with the primary air required for combustion is supplied to the burner main body 12 from the gas supply port 17 provided in the burner main body 12 with the ignition operation. Flame hole 1 of burner plate 14
., And are ignited by an ignition electrode (not shown) arranged near the burner plate 14, and burn as a short flame on the surface of the burner plate 14. Note that the combustion gas is discharged to the outside through an exhaust port 18 at the rear of the grill storage 2. During the combustion, on the surface of the burner plate 14, each of the projections 16, 16,.
・ It is heated by the flame from it and glows red at a temperature of 850 ° C or more. Therefore, the inside of the grill storage 2 is illuminated by the red light of the red-heated projections 16, 16,. As described above, according to the above embodiment, only the surface of the burner plate 14 can be reliably and effectively glowed to 850 ° C. or higher by using the protrusions 16 and 16 formed on the burner plate 14, so that it is used for lighting. It is possible to obtain a sufficient lighting effect with a simple configuration and good usability without using a separate luminous body or adjusting the gas input or the amount of air.
Further, since the temperature does not rise to the back surface of the burner plate 14, no flame back occurs.

Incidentally, the projections 16 may be partially provided not at the entire surface of the burner plate 14 but at a place requiring illumination. Further, in the above embodiment, the shape of the projection may be appropriately changed such as a flat upper surface or a complete pyramid without a columnar portion. For example, as shown in FIG. A simple columnar projection 19 on the surface,
Even if 19... Are erected, red heat of 850 ° C. or more can be obtained by the flames from the surrounding flame holes 15. Also, in this case, as shown in FIG.
By providing 5, 15,..., Respectively, the heat capacity of each columnar projection 19 becomes small, and red light with high speed and high brightness can be obtained. In addition, the planar shape of the projection can be appropriately changed, such as an elliptical shape or another polygon, or the upper surface of the projection can be made spherical, or the like, but in order to reduce heat capacity, a flame hole is provided in the projection as in the above embodiment. Or it is effective to make the tip protrude. However, these projections need to have a height of 1.3 mm or more from the surface of the burner plate as in the previous embodiment in order to obtain red heat of 850 ° C. or more. The total area of the protrusions on the surface of the burner plate is 5% of the total area of the flame holes.
It is desirable to set it to 0% or less. This is for maintaining the durability of the burner plate and preventing the back of the flame. Further, the burner plate is not limited to the structure in which the burner plate is attached to the burner main body with a single plate, and the same effect can be obtained by forming the projections in the same manner as in the above embodiment even in a structure in which a plurality of divided burners are attached.

On the other hand, in the above embodiment, the projections and the flame holes are used as the glowing means. However, as another configuration for realizing the glowing means, the porosity of the burner plate may be set to 66% or more. That is, by setting the porosity, the heat capacity is reduced and the temperature rises quickly, and the thermal conductivity is lowered to increase the surface temperature by 8 without increasing the overall temperature.
It can be maintained at 50 ° C. or higher. Also in this case, the inside of the grill storage can be illuminated by the red heat of the burner plate, so there is no need to use a separate illuminator for illumination, or to adjust the gas input or air volume, and a simple configuration provides sufficient illumination. The effect can be obtained. Further, since the temperature does not rise to the back surface of the burner plate, the back of the flame can be prevented.

The burner plate may be provided with a projection,
Since the strength becomes brittle by increasing the porosity,
There is a possibility that the ceramic powder may be peeled off and fall into the food. Therefore, as shown in FIG. 5, a burner 20 composed of a burner main body 21 and a burner plate 22 having the same protrusion as the above-described embodiment standing up or having a porosity of 66% or more is placed in the pan 4.
If the ceramic powder is placed horizontally in the grill storage 2 in a manner sandwiching the ceramic powder, it is possible to prevent the ceramic powder from dropping into the food F. In particular, in this embodiment, the temperature of the back surfaces of the burner plates 22 and 22 is less likely to rise as compared with the case where the burner plates 22 are arranged above the grill storage 2, which is effective in preventing back of a flame.

[0013]

According to the first aspect of the present invention, since the glowing means for glowing the surface of the burner plate to 850 ° C. or higher is provided, the inside of the grill storage can be illuminated by the red heat. It is possible to obtain a sufficient lighting effect with a simple configuration and good usability without using a separate light emitting body or adjusting a gas input or an air amount. Further, since the temperature does not rise to the back surface of the burner plate, no flame back occurs. According to the second aspect of the present invention, in addition to the effect of the first aspect, the glowing means includes:
When the porosity of the burner plate is set to 66% or more, the red heat means can be easily realized.

According to a third aspect of the present invention, there is provided the first or second aspect.
In addition to the effects described above, the red heating means is constituted by the projections and the flame holes, so that a more reliable and effective red heating means can be realized. According to the fourth aspect of the invention, in addition to the effect of the third aspect, since the flame holes are also formed in the projections, the heat capacity of the projections can be reduced and a more effective lighting effect can be obtained.
According to the fifth aspect of the invention, in addition to the effect of the third or fourth aspect, the area of the projection occupying the surface of the burner plate is set to 50% or less of the total area of the flame holes, thereby improving the durability of the burner plate. While maintaining, the back of the flame can be effectively prevented. According to the invention of claim 6, in addition to the effect of any one of claims 1 to 5, the ceramic powder drops from the burner plate to the cooking object by providing the burner plate horizontally on the side surface in the grill storage. It is also effective in preventing flame back.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a gas grill.

FIG. 2 is an explanatory view of a surface and a cross section of a burner plate.

FIG. 3 is an explanatory view showing a modified example of a projection.

FIG. 4 is an explanatory view showing a modified example of a projection.

FIG. 5 is an explanatory view of a gas grill in which a burner is turned sideways.

[Explanation of symbols]

1. Gas grill, 2. Grill storage, 10. Burner,
12 ・ ・ Burner body 、 14 ・ ・ Burner plate 、 15 ・
Flame holes, 16 projections, 19 pillar projections.

Claims (6)

[Claims] 1. A gas grill using a ceramic burner plate in which a plurality of flame holes are formed in a burner installed in a grill storage, wherein the surface of the burner plate is heated at a temperature of 850 ° C. or higher. A gas grill, comprising: a red hot means for causing the inside of the grill storage to be illuminated by light emitted by the red heat. 2. The gas grill according to claim 1, wherein the glowing means sets the porosity of the burner plate to 66% or more. 3. The red heating means is a projection projecting from the surface of the burner plate, having a height from the surface to a tip of not less than 1.3 mm, and a flame hole arranged around the projection. Or the gas grill according to 2. 4. The gas grill according to claim 3, wherein a flame hole is also formed in the projection. 5. The gas grill according to claim 3, wherein the area of the protrusion occupying the surface of the burner plate is set to 50% or less of the total area of the flame holes. 6. The gas grill according to claim 1, wherein the burner plate is provided laterally on a side surface inside the grill storage.