JPS63223435A - Grill - Google Patents

Abstract

PURPOSE:To improve the cooking property of the grill by providing a lower heat source and an upper heat source and disposing a cleaning material immediately above the lower heat source. CONSTITUTION:An upper part source 11 having a burner port plate 10 of a grill box 9 heats the upper surface part of a material to be cooked. A Bunsen flame formed by the lower heat source 15 heats the inner part of a cleaning material 14 made of porous ceramics, and heats a part of the cleaning material in candescence. Oil parts and water contents leaching from the material to be cooked drop downward. Oil parts which have contacted the cleaning material 14 is subjected to pyrolysis while impregnating into fine holes formed in the inner part of the cleaning material 14, and is sprayed while being decomposed into CO2 and steam. The water content falling onto the cleaning material 14 is sprayed in the form of steam. Further, the cleaning material 14 itself becomes a radiation heat source and the material to be cooked undergoes the heating operation on both upper and lower surfaces.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a grill for home or business use that uses gaseous fuel such as city gas or liquefied natural gas.

2. Description of the Related Art As shown in FIG. 3, a conventional grill burner is equipped with a heat-resistant baking device 2 inside an outer box 1, and a pair of upper burners 3 are disposed on the left and right sides of the upper part of the baking device 2. A grill 4 on which the food to be cooked is placed is removably installed at the bottom of the cooking device 2, and a pair of left and right lower burners 5 are installed directly below the grill 4 of the baking device 2 to remove meat juices and other food from the food. A canopy-like cover 6 is provided that is bent inward from the left and right to prevent the falling components from adhering to the product, and a removable saucer 7 is provided at the bottom of the baking oven 2 to collect the falling components from the food to be cooked. The radiant heat and convection heat generated by the combustion of the upper burner 3 and lower burner 5 simultaneously heat and cook the food placed on the grill 4 from both the upper and lower surfaces. The oil and moisture that fall from the food as it progresses are collected by the saucer 7 directly below it.

Problem 3 to be solved by the invention -7 In the grill according to the above-mentioned conventional technology, when the oil, moisture, small pieces of meat, etc. that have fallen from the food to be cooked come into contact with the saucer 7, the inside of the griller 2 has already reached 300 ml. Since the temperature is around °C, the saucer 7 is also heated to a temperature of nearly 200 °C, and the oil, small pieces of meat, etc. stuck to the saucer 7 are removed when cleaning the saucer 7 after cooking. Conditions frequently occurred in which it became difficult to clean the oil, or the fallen oil vaporized on the saucer 7, and the vaporized gas touched the flame of the lower burner and ignited. For this reason, in the method using the saucer 7 described above, a cautionary note has been attached to the instruction manual etc. to the effect that the saucer must be filled with water before use. On the other hand, when water is injected into the saucer 7, it is possible to avoid situations in which components falling from the food to be cooked stick to the saucer 7 or catch fire due to volatilization of oil; Not only may some water or dirty water containing oil scatter to the outside, but also the water in the saucer 7 may evaporate during cooking.
The generated steam comes into contact with the bottom surface of the food and condenses, keeping the bottom surface of the food moist at all times, even though the top surface of the food is relatively crisp after cooking is complete. In comparison, the bottom surface became watery, which deteriorated the cooking performance.

Means for Solving the Problems In order to solve the above-mentioned problems, the grill according to the present invention includes a grill chamber coated with a heat-resistant coating, and a grill chamber equipped with both a lower heat source and an upper heat source. 1. A purifying material made of porous ceramics is placed directly above or below the lower heat source.

Effect of the present invention With the above configuration, fuel is supplied to both the upper heat source and the lower heat source, combustion is started in both the upper heat source and the lower heat source by ignition means such as an ignition spark, and the radiant heat from the upper heat source causes the fuel to be supplied to both the upper heat source and the lower heat source. At the same time that the top surface of the food is heated, the flame from the lower heat source contacts the purifying material, heating the purifying material,
Let it reach a point where some parts become red hot. As cooking progresses, oil, moisture, etc. from the food to be cooked fall onto the heated purifying material. At this time, the fallen oil is impregnated into the interior of the purification material due to its porous nature in a high temperature state, and undergoes a purification action by being burnt off, decomposing into CO2 and water vapor and scattering. Similarly, the water that falls once comes into contact with the purifying material and becomes water vapor and scatters. In addition, since a part of the purifying material exhibits a red-hot state, the purifying material itself becomes a radiant heat source and heats the bottom side of the food to be cooked, so both the top and bottom sides of the food to be cooked are heated simultaneously by both the upper heat source and the purifying material. be done.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

(Example 1) In FIG. 1, a grill chamber 9 coated with a heat-resistant coating is built into the outer box 8, and the grill chamber 9 has a flame hole plate 10 formed by laminating wire mesh on the top thereof. An upper heat source 11 is disposed, and a pair of left and right covers 12 are provided at the bottom of the grill chamber 9 to concentrate falling ingredients such as oil and moisture from the food to be cooked to a certain extent in the center of the grill. A grill 13 for placing food to be cooked is removably installed directly above the cover 12. Furthermore, a purifying material 14 made of porous ceramics is installed directly under the cover.
A lower heat source 15 consisting of a burner that forms a Bunsen flame is disposed at the lowest part of the grill chamber 9 and below the left and right sides of the purifying material 14.

Next, the operation of the first embodiment with the above configuration will be described.

Fuel is supplied to the upper heat source 11 and the lower heat source 15 at the same time,
Combustion is started in the flame hole plate 10 of the upper heat source 11 and the flame hole portion of the lower heat source 15 by ignition means (not shown) such as an ignition spark. After a certain period of time has passed from the time of ignition, the upper heat source 1
The flame hole plate 10 formed by laminating the wire meshes 1 becomes red-hot, and radiant heat from infrared rays begins to heat the upper surface of the food to be cooked.

On the other hand, the Bunsen flame formed by the lower heat source 15 heats the inside of the purifying material 14 from the lower part, and in a steady state, the purifying material 14
A part of it reaches a red-hot state of about 650 to 700°C. From this point on, oil and water seep out from the entire food to be cooked, begin to partially fall downward, and begin to come into contact with the purifying material 14 heated by the Bunsen flame of the lower heat source 15. The oil that has come into contact with the purification material 14 undergoes thermal decomposition (burn-off action) while impregnating into the internal pores due to the porous nature of the purification material 14, and is dispersed while being decomposed into Co2 and water vapor.

At the same time, the water that falls onto the purifying material 14 mixes with water vapor and scatters when it comes into contact with the cleaning material 14. The amount of water vapor generated in this way is so small that it does not moisten the bottom surface of the food to be cooked. Further, as described above, a portion of the purifying material 14 has a particle size of 650 to 70
Since the purifying material 14 exhibits a red-hot state of about 0°C, the purifying material 14 itself becomes a radiant heat source and heats the lower surface of the object to be cooked. Both sides will be heated by radiant heat at the same time.

(Embodiment 2) In FIG. 2, a grill cabinet 9' coated with a heat-resistant coating is built into the outer box 8 as in FIG. An upper heat source 11 similar to the above is disposed at the bottom of the IJ/shelf 9', and a lower heat source consisting of a Bunsen burner with a downward flame hole directly below absorbs fallen components such as oil and moisture from the food to be cooked. Covers 12' are provided on the left and right sides so as not to contact the covers 15'. moreover,
The lowest part of the grill chamber 9' and directly below the lower heat source 15' are made of porous ceramics, La1-, CexCo○3
A purification material 14' supporting a (X=O-S-0,5) system belobunite type oxide as a purification catalyst is installed.

Next, the operation of the second embodiment with the above configuration will be described.

Combustion is started in the upper heat source 11 and lower heat source 15' in the same manner as in Example 1, and after a certain period of time has passed since ignition, the radiant heat from the flame hole plate 10 of the upper heat source 11 burns the food to be cooked, as in Example 1. Start heating the top part. On the other hand, the lower heat source 15
The obliquely downward Bunsen flame formed at 14' heats the inside of the purifying material 14' from the top surface directly below it, and in a steady state, a part of the purifying material 14' reaches a red-hot state of 650 to 700° C. , the purification catalyst supported on the purification material 14' is maintained at an activation temperature. From this point onwards, oil and fat from the entire food
The water leaches out and some of the water begins to form droplets and fall onto the cleaning material 14'. The oil that has come into contact with the purifying material 14' is
Due to the porosity of 4', it gradually vaporizes while being impregnated into the internal pores, undergoes thermal decomposition (burn-off action) and catalytic oxidation action of the purification catalyst, and is decomposed into Co2 and water vapor, which then scatter. At the same time, the water that falls comes into contact with the purifying material 14' and becomes water vapor and scatters. The amount of water vapor generated in this way is very small and the temperature is high, and the amount of dew condensation on the bottom surface of the object to be cooked is small and does not moisten the bottom surface of the object to be cooked. Further, as mentioned above, a portion of the purifying material 14' is 65
It exhibits a red-hot state of about 0 to 700°C, and the La1- and CelCoO3 type perovskite oxides used as purification catalysts have radioactivity close to that of a black body, resulting in extremely high infrared radiation efficiency. Therefore, the upper and lower surfaces of the food to be cooked are simultaneously efficiently heated by the upper heat source 11, the purifying material 14', and a portion of the convection gas from the lower heat source.

Effect of the invention According to the grill of the present invention, the following effects can be obtained.

(1) Heat-resistant coated IJ) The refrigerator is equipped with both a lower heat source and an upper heat source, and a purifying material made of porous ceramics is placed directly at or below the lower heat source. The purifying material is heated by a heat source, and the oil and moisture that fall from the food being cooked during cooking are decomposed into Co2 and water vapor by thermal decomposition or catalytic oxidation, thereby keeping the bottom of the grill clean and improving the cleanliness of the grill compared to conventional methods. At the same time, the purifying material itself can be self-purified during cooking.

(2) With the above configuration, a part of the purifying material itself has a particle size of 650 to 700
Since it exhibits a red-hot state of about 0°C, the purifying material itself becomes a radiant heat source and can heat the bottom surface of the food to be cooked. As a result, both the upper heat source and the purifying material heat both the top and bottom surfaces of the food at the same time. Can be cooked.

[Brief explanation of drawings]

FIG. 1 is a cut front view of a steel IJ/shield according to an embodiment of the present invention, FIG. 2 is a cut front view of another embodiment of the invention, and FIG. 3 is a cut front view of a conventional steel wire. 9.9'...Grill storage, 11...Upper heat source, 14.14'...Purification material, 15.15'
...Lower heat source. Name of agent: Patent attorney Toshio Nakao and 1 other person9-
m - Grid 2 door 11 - m - Upper part rough / 4' -- Wild wood Fig. 2 ts' - Consonant p sweep / 4' Fig. 3 1.3 2r is ζ]

Claims (3)

[Claims] (1) A grill that is equipped with a heat-resistant coating, a lower heat source and an upper heat source inside the grill, and a purifying material made of porous ceramics placed directly above or below the lower heat source. (2) Claim 1 in which the lower heat source is a flaming burner
Grill as described in section. (3) As purification materials, Al_2O_3, SiO_2, M
One type of heat-resistant ceramics made of gO, ZrO_2, Cr_2O_3, etc. molded into a porous foam, honeycomb molded body, or fiber molded body, or one of the above foams, honeycomb molded bodies, or fiber molded bodies As a carrier,
2. The grill according to claim 1, which uses one of perovskite oxides and catalysts supported on purification catalysts such as platinum group metals such as Pt and Rh.