JPS61191807A - Baking apparatus for cooking - Google Patents

Abstract

PURPOSE:To make it possible to uniformly heat a griddle plate and to improve the heat efficiency of the titled apparatus by constituting the apparatus so that the griddle plate can be heated by disposing a plurality of infrared ray burners provided with a ceramic plate having a large number of fine burner ports at the lower part of the griddle plate. CONSTITUTION:A griddle plate 1 is supported on the apparatus, and a plurality of infrared ray burners 2 are provided in parallel thereto at the lower part of the griddle plate 1. A ceramic plate 15 is made of pieces each of which is formed into a rectangular parallelepiped having a thickness of approximately 11mm, said pieces being provided longitudinally in a row. The ceramic plate 15 is attached to the upper end surface of the main burner body 6 so that the ceramic plate 5 covers the upper surface opening of the main burner body 6, and a refractory heat insulating material 14 is made contact with the lower surface central part of the ceramic plate 15. The surface of the ceramic plate having a large number of fine burner ports is incandesced to generate infrared rays, and the griddle plate can be heated by radiant heat. Therefore, the heat efficiency of the apparatus is extremely good, and uniform heating can be achieved in a wide range because the ceramic plate is plane.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) This invention relates to a cooking grill using an infrared burner.

(Prior Art) Conventionally, there is a cooking pot shown in FIG. 5. In FIG. 1, there is a griddle plate (
The iron plate 52 is heated by the flame of a rod-shaped burner 53 installed horizontally below it and used for cooking. This rod-shaped burner 53 is a rod-shaped tube body, and a large number of flame holes are bored in its upper peripheral surface. The gas injected into the rod-shaped burner 53 from the nozzle 54 becomes a flame and is ejected from the flame hole to heat the griddle plate 52. 55 in the figure is an exhaust port.

(Problem) In the conventional cooking roaster configured as described above, since the burner is rod-shaped, only a part of the griddle plate located above the burner is heated to a high temperature, and the griddle plate is heated to a high temperature. There was a problem that the heat distribution on the plate was uneven. 'For this reason, a large number of rod-shaped burners 53 are disposed below the griddle plate 52 in an attempt to make the heat distribution uniform, but it is still difficult to make the heat distribution completely uniform due to the structure. In addition, with such a conventional structure, when gas is ejected from the flame hole of the rod-shaped burner 53 and combusted, air is taken in from around the flame for complete combustion. The chamber needs to be an open type that allows air to flow, so the airflow A inside the combustion chamber flows in the direction of the arrow in Figure 5.
There is a problem in that the griddle plate 52 is always cooled from below, resulting in poor thermal efficiency during temperature rise and increased gas consumption during temperature control.

(Means for Solving the Problems) The present invention has been devised in view of the above-mentioned conventional problems, and aims to provide a cooking grill that can uniformly heat a griddle plate and has good thermal efficiency. The gist is that a plurality of infrared burners equipped with ceramic plates having a large number of fine flame holes are disposed below the griddle plate to heat the griddle plate. .

(Function) An infrared burner equipped with a ceramic plate that has many fine flame holes burns the introduced gas within the fine flame holes of the ceramic plate, so the surface of the ceramic plate becomes red hot and emits strong infrared rays. I can do it. The griddle plate can be heated by this infrared radiant heat, but
Compared to convection heating using the flame of a conventional rod-shaped burner, radiant heat from infrared rays reaches the griddle plate directly, and because it has no directionality, it reaches the griddle plate in a diffusive manner. Therefore, the griddle plate can directly heat a fairly wide area. In other words, the surface area of the ceramic plate is quite wide, so
The heating area of the griddle plate is larger. Also, since the surface of the ceramic plate is red-hot and no flame is generated upward,
The distance between the ceramic plate and the griddle plate can be shortened, improving thermal efficiency. Also, because the total area of the ceramic plate's flame holes is large, the internal pressure of the burner is low, so a large amount of primary air can be sucked through the nozzle of the burner, and secondary air is not required on the red-hot surface of the ceramic plate. . Therefore, the combustion chamber can be sealed, and cooling of the griddle plate due to outside air flowing into the combustion chamber can be prevented.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a plan view showing a state in which a plurality of infrared burners 2 are arranged below the griddle plate 1, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. A sectional view taken along the line B-B is shown. FIG. 4 is an exploded perspective view of the infrared burner 2.

In the figure, a griddle plate 1, which is an iron plate for cooking, is received in a container frame P of a cooking pot, and a plurality of infrared burners 2 are arranged in parallel below the griddle plate 1.

A combustion chamber C is formed by the lower surface of the griddle plate 1, the upper surface of the infrared burner 2, and the vessel frame P, and this combustion chamber C is formed in a substantially sealed shape to prevent outside air from entering from below. Incidentally, an exhaust pipe 3 is provided upright on the side of the combustion chamber C. Reference numeral 4 in Figure 4 is a concave oil pan provided on the side of the griddle plate.

Next, the structure of the infrared burner 2 will be explained in detail.

In the figure, reference numeral 6 denotes a burner body constituting the infrared burner 2, which is formed in the shape of a horizontally elongated funnel, and a mixing tube 7 for mixing gas and air is connected to the bottom center of the funnel. A nozzle 8 is connected to the end of the mixing tube 7, and gas and air are introduced from the nozzle 8 into the burner body 6 through the mixing tube 7.

In the figure, reference numeral 9 denotes a baffle plate, which is formed by slightly bending both ends of a thin iron plate downward, and a partition plate 10 is fixed to the center of the lower surface in a hanging manner. This baffle plate 9 is placed on a protrusion 6a that is provided upwardly on the bottom surface of the burner main body 6, and is placed on the partition plate 1.
0 is placed on the mixing tube 7. Therefore, the gas and air introduced from the mixing tube 7 are distributed along this baffle plate 9 to both ends of the burner body 6.

In the figure, reference numeral 11 denotes a holder formed in the shape of a gutter, and is placed above the baffle plate 9 via a sleeve 12. That is, two through holes are provided in the holder 11 and the baffle plate 9, and the screws 13 are inserted from above the through holes in the holder 11. It is inserted through the through hole and is screwed onto a screw threaded onto the protrusion 6a of the burner body. Therefore, by tightening the screws 13, the baffle plate 9 and the holder 11 are fixedly installed within the burner body at an appropriate interval in the vertical direction.

In the figure, reference numeral 14 denotes a refractory heat insulating material installed in the holder 11, and in this example, elastic cotton-like refractory heat insulating fiber made of ceramic and mainly composed of alumina and silica is used. This fire-resistant heat insulating material 14 has excellent heat resistance and heat insulation properties, and has low thermal conductivity, and may be in the form of a blanket or paper.

In the figure, reference numeral 15 denotes a ceramic plate, in which rectangular parallelepiped pieces each having a thickness of about 11 ys are arranged in a row in the longitudinal direction. It can be completely attached to the upper end surface of 6. In this engaged state, the refractory heat insulating material 14 comes into contact with the center portion of the lower surface of the ceramic plate 15.

This ceramic plate 15 has fine flame holes with a diameter of about 1 m perforated over the entire plane, and is made of ceramic having a thermal conductivity of J\.

Next, the operation of the infrared burner 2 configured as described above will be explained.

A part of the gas introduced into the burner main body 6 through the mixed pipe 7 and the primary air from the nozzle 8 flows along the lower surface of the baffle plate 9 to both ends of the burner main body 6 in the longitudinal direction. The liquid flows and fills the burner body almost uniformly. The filled gas rises through the flame hole of the ceramic plate 15 and burns on the surface of the ceramic plate 15 by being ignited. As the surface temperature of the ceramic plate 15 gradually rises, the surface of the ceramic plate becomes completely red-hot, and when the surface temperature reaches 800 to 900°C, it becomes in the infrared wavelength range and infrared rays are emitted. In this case, as the surface temperature of the ceramic plate rises, the place where the gas combustion reaction begins tends to shift from the surface of the ceramic plate 15 to the lower layer, but the ceramic plate 1
No. 5 has low thermal conductivity, so the temperature of the lower layer does not rise and the temperature difference between the front and back surfaces is large. Therefore, no gas flashback phenomenon occurs, the gas burns slightly below the surface, and only the surface of the ceramic plate 15 becomes red hot. In addition, since the refractory heat insulating material 14 is in contact with the central part of the lower surface of the ceramic plate 15 in this example along the longitudinal direction of the ceramic plate 15, the flame holes of the ceramic plate 15 at the abutting part are closer to each other from the lower surface side. It is in a state of being connected. Therefore, gas is blocked at the abutment area and no combustion occurs within the ceramic plate. That is, the central portion of the ceramic plate 15, which is in contact with the refractory heat insulating material 14, is not red-hot. This is ceramic plate 15
This is to avoid that when the entire surface of the ceramic plate 15 becomes red hot, the radiant heat will be concentrated in the center and the center will be hotter than the periphery, and the distribution of radiant heat on the surface of the ceramic plate 15 should be uniform. This is to prevent it from becoming a reality. The purpose of sealing the flame holes of the ceramic plate 15 with the fire-resistant heat insulating material 14 is to avoid cracking of the ceramic plate 15 due to heating and drying that would occur if the flame holes were sealed with silicone clay, etc. If the flame hole is sealed and closed, it will be difficult to adjust the flame hole after that, so a fire-resistant heat insulating material 14 that can be easily cut to change the contact area is placed in contact with the flame hole. It was made from the bottom to make it easier to adjust the flame hole later.

In this way, the infrared burner 2 is connected to the ceramic plate 1.
By making the surface of the griddle plate 5 red hot, radiant heat is generated by infrared rays, and the griddle plate 1 can be directly heated by the radiant heat. Moreover, since the flame hole portion of the ceramic plate 15 is a plane, the red-hot surface is wide and radiant heat can be generated over a wide range, and the griddle plate 1 is not heated locally, resulting in a good heat distribution on the griddle plate. It's true. Therefore, by disposing a plurality of infrared burners 2 to heat the griddle plate 1, the heat distribution over the entire area of the griddle plate is made uniform, and the griddle plate is heated to a uniform temperature. Furthermore, according to the infrared burner 2 of this example, since the central part of the ceramic plate 15 is covered with the fire-resistant heat insulating material 14, the ceramic plate 1
5, the radiant heat is not concentrated in the central part of the housing 5, preventing the central part from becoming hot and making the distribution of the radiant heat uniform.

(Effects) The cooking pot of the present invention is configured to heat the griddle plate by disposing a plurality of infrared burners each having a ceramic plate having a large number of fine flame holes below the griddle plate. This makes the surface of the ceramic plate red hot and generates infrared rays, and the griddle plate can be heated by the radiant heat of the infrared rays, resulting in very high thermal efficiency. Can be heated. Furthermore, since the total area of the flame holes in the ceramic plate is large, the internal pressure of the burner is lowered, a large amount of primary air can be sucked in, and the combustion chamber can have a sealed structure. Therefore, dirt, oil, etc. are prevented from entering the combustion chamber, and stable combustion occurs in the combustion chamber without being affected by outside air. Furthermore, since the infrared burner can be placed close to the griddle plate for combustion, efficiency can be further improved.

[Brief explanation of the drawing]

1 to 4 show one embodiment of the present invention, FIG. 1 is a plan view showing a state in which a plurality of infrared burners are arranged below the griddle plate, and FIG. 3 is a sectional view taken along line A, FIG. 3 is a sectional view taken along line BB in FIG. 2, and FIG. 4 is an exploded perspective view of the infrared burner. FIG. 5 shows a sectional view of a conventional cooking pot. 1... Griddle plate 2... Infrared burner 14... Fireproof insulation material 15... Ceramic plate

Claims (2)

[Claims] (1) A plurality of infrared burners 2 each having a ceramic plate 15 having a large number of fine flame holes are disposed below the griddle plate 1 to heat the griddle plate 1. A pottery pot for cooking. (2) The flame pores of the infrared burner 2 can be adjusted by abutting a refractory heat insulating material 14 on the center of the lower surface of the ceramic plate 15 and blocking a predetermined number of flame pores of the ceramic plate 15. A cooking pot as claimed in claim 1, characterized in that: