JP2001201050A - Far-infrared radiation cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oven wherein the ratio of a far-infrared heating is increased to preserve an flavor component such as broth in the prepared food. SOLUTION: A far infrared radiation vessel 6 is placed in a stove chamber 5, hot air is convected in the vessel, and a cooking tray 11 is placed to be freely taken in/out at an opening A of the vessel 6. The wall (a bottom sheet 8-1, side walls 8-2, and a ceiling wall 8-3) of the vessel 6 is constituted as a ceramic plasma sprayed surface. The cooking tray 11 is placed apart from a heat source 2 in the vessel 6 by holding means (a flange 12 and a supporter 13). The stove chamber 5 is filled with hot air to heat a to-be-cooked material 13 on the tray 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to far-infrared cooking utensils, and more particularly, converts convective heat in a furnace chamber to far-infrared rays to bake umami components in a cooking product by confining more umami components. The present invention relates to a far-infrared cooking utensil.

[0002]

2. Description of the Related Art There are various types of cooking ovens, such as a heating oven arranged with a heat source below and a heating oven arranged above or below with a heat source. The dish is placed at a certain distance from the heat source to heat the cooked food by applying more convective heat and radiant heat, and to circulate hot air such as combustion gas to heat the cooked food more uniformly. There are things. As a heating means for the oven, fuel gas such as city gas and propane gas, electric heating and the like are generally used.

[0003]

By the way, it has been proposed to increase the amount of far-infrared radiation for heating an oven or a similar cooking device. For example, in Nobuhide Maeda, "Investigating the Current Status of Products Utilizing Far-Infrared Lights" (published on the last day of April, 1989), the pot bottom is made of ceramic with a plurality of convex and concave shapes that bulge inward, and this pot bottom is a dome. A cooker with stainless steel plate coated with ceramic having far-infrared radiation characteristics, holding the cooked product in the middle of the pot, and heating the pot bottom with a gas burner. There are reports of gas ovens in which a treated infrared panel is heated with a combustion gas. It is described that the blackening treatment is one in which an oxide film is formed on the surface of a stainless steel plate, and the peeling phenomenon, which is a defect of the far-infrared radiation surface obtained by plasma-spraying ceramic, can be improved.

According to the study of the present inventor, the above-mentioned conventional cooker utilizing far-infrared radiation, which imparts far-infrared radiation characteristics to the surface of the heating element, is compared with a conventional cooker which does not provide such far-infrared radiation characteristics. Even so, no special effect could be recognized.

The present invention has been made in view of the above problems. Even in a ready-made oven, the ratio of heating by far-infrared rays is increased, and more umami components such as meat juice are cooked. It is intended to provide a far-infrared cookware that can be left inside.

[0006]

A first far-infrared cooker according to the present invention for achieving the above object comprises a far-infrared radiation container for heating and cooking, wherein the far-infrared radiation container has a cooking temperature. At least one opening through which heated hot air can flow in and out, and holding means for holding a cooking dish in which cooking material is placed floating inside the space, and holding at least one opening on the inner surface of the far-infrared radiation container. A ceramic plasma sprayed surface is formed in the portion, and is mounted in a furnace chamber filled with hot air, away from a heat source that generates the hot air.

The function of the ceramic plasma sprayed surface (hereinafter simply referred to as the ceramic sprayed surface) is as follows. The convection heat in the furnace chamber heats the far-infrared radiation container, and the convection heat is converted into far-infrared light having a wavelength easily absorbed by the cooked product. And act to radiate from the ceramic sprayed surface. Therefore, preferably, the ceramic sprayed surface is made as large as possible, but the present invention is not limited to this. Also, a ceramic sprayed surface can be formed outside the far-infrared radiation container.

The opening is not particularly limited in size and shape, and may be any window as long as it allows easy entry and exit of convective hot air. At least one of the openings may be used as a port for the cooking dish. It can be. Further, the openings are preferably opened at a plurality of locations to promote convection of hot air and to eliminate temperature unevenness in the furnace chamber. However, it is not preferable that the total area of the openings reduces the area of the ceramic sprayed surface and reduces the amount of far-infrared radiation. The ratio of the opening to the entire wall surface is preferably determined in accordance with actual practice.

The holding means is not particularly limited as long as it can hold the cooking dish floating in a space. As an easy-to-handle means, a general cooking oven that holds a flange projecting sideways from the cooking dish on a receiving portion projecting in a shelf shape from the inner side wall of the far-infrared radiation container, Commonly used means can be applied.

The means for mounting the far-infrared radiation container in the furnace chamber may be the same as the holding means, but may be other means, and is preferably detachable. Is also good.

The structure of the furnace chamber is not particularly limited, and may be, for example, a cooking material heating chamber of a cooking oven. Therefore, the far-infrared radiation container can be used by attaching it to a commercially available cooking oven. In the case where the furnace chamber is used as a cooking oven chamber, the opening and exit of the cooking dish may be opened facing the oven door.

The second far-infrared cooking utensil of the present invention is characterized in that in a furnace chamber for heating and cooking a cooking material by filling it with hot air, the wall surface is prevented from escaping from the wall surface of the furnace chamber heated by the hot air to the outside. Has a heat-insulating outer surface, a ceramic-sprayed surface is formed on at least a part of the wall surface, and holding means is provided in the furnace chamber for holding a cooking dish on which a cooking material is placed away from the heat source.

As means for providing heat insulation, the far-infrared radiation container wall which is covered with a heat insulating material has a double wall, and a space between the double walls is a space where convection hardly occurs, for example, a space of about 10 mm. And the like.

Assuming that the outside of the far-infrared radiation container wall is heat-insulating, the container wall is heated to a temperature equal to or close to the temperature by hot air convection in the furnace chamber, and the wavelength of the electromagnetic radiation radiated from the ceramic sprayed surface to a desired wavelength. It can be converted and even thick cooked products such as hamburgers can be cooked inside without increasing the surface temperature.

As the heat source for the hot air, various sources such as fuel gas such as city gas and propane gas, electric heat and electromagnetic induction heating can be used. Further, the heat source may directly heat the far-infrared radiation container, or may circulate hot air with a fan or the like.

There are no particular restrictions on the ceramics that can be used. Quartz ceramics such as alumina, chromium oxide and silica sand, titania, various other ceramics, and mixtures of these as appropriate can be used. The particle size of the ceramic powder to be plasma sprayed is not particularly limited.
Those having a diameter of about 10 to 10 μm are preferred. Similarly, the plasma spray density is not particularly limited, but is preferably about 5 to ²⁰ g / m ² . As the plasma spraying method, an ordinary method can be appropriately used.

The substrate on which the ceramic is plasma-sprayed is not particularly limited. However, in terms of rigidity, workability, cost, etc., an iron plate,
A stainless plate or the like can be used.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention;

In the far-infrared cooker 1 shown in FIG. 1, a heat source (gas burner) 2 is arranged on the lower side, and three sides are surrounded by a side wall 3 and a ceiling wall 4 above the door, and a door (shown in FIG. 3) is provided, and a detachable far-infrared radiation container 6 is provided inside. The far-infrared cooking utensil 1 used was a general oven equipped with a temperature automatic controller (not shown), a temperature setting device and the like except for the far-infrared ray container 6. Reference numeral 7 in FIG. 1 is a housing.

The far-infrared radiation container 6 is formed by plasma spraying ceramics such as alumina powder (hereinafter simply referred to as thermal spraying).
An opening A is provided on the front side and the opposite side of the door side, and the other four sides are surrounded by a bottom plate 8-1, a side wall 8-2, and a ceiling wall 8-3, and a shelf-like engagement is provided on the outside. With the part 9 protruding, the furnace chamber 5
The far-infrared ray radiating container 6 is mounted on the furnace chamber 5 on a shelf-shaped receiving portion 10 protruding from the inner wall of the container, and a receiving portion 13 for holding the flange portion 12 of the cooking dish 11 is provided inside the side wall 8-2. It is provided on the stage. Note that a combustion gas discharge port (not shown) is provided in an upper part of the furnace chamber 5.

The ceramic used in the present embodiment is alumina having a particle size of 3 to 10 μm and a spray density of 5 to 20 g / m ² .

The combustion gas (hot air) of the heat source 2 rises between the furnace chamber 5 and the side wall 8-2 of the far-infrared radiation container 6, and the opening A
Part of the vessel enters the far-infrared radiation container 6 and the ceiling wall 8
When it reaches -3, it flows out of the far-infrared radiation container 6 again.
During this time, the far-infrared radiation container 6 is heated from inside and outside by the combustion gas, and emits far-infrared rays. Can be made to act more strongly.

The method of using the far-infrared cooker 1 of the present embodiment is basically the same as that of a conventional oven. However,
A specific usage method may be determined as appropriate according to the type of heat source and other specifications of the far-infrared cooker of the present invention. Hereinafter, a result of cooking a hamburger as a cooking product to be cooked with the far-infrared cookware 1 of the present embodiment will be described below.

The far-infrared radiation container 6 was placed on the far-infrared cooking utensil 1, the temperature was set to 200 ° C., and ignition was performed. A hamburger (cooked product) 14 prepared based on the specifications usually made at home is placed on a cooking dish 11 substantially similar to an oven dish, and is held in the far-infrared radiation container 6 when the hot air temperature reaches the set temperature. I let it. After a lapse of a predetermined time (about 20 minutes), it was confirmed that the fire had passed to the inside, and was taken out. The baked hamburger (cooked product) 14 had almost no scorch on the surface, the fire passed through to the inside, and the juice was confined inside.

The result is that the convective heat in the high-temperature combustion gas is converted into far-infrared rays, which are easily absorbed by the cooked product, and the heat inside the hamburger (cooked product) 14 is not excessively increased, and the heat inside the hamburger 14 does not rise excessively. Hamburger (cooked food) 14 to infiltrate
It is thought that it became easier to confine the gravy inside. In addition, the roasted sea bream was delicious in a very short time because the surface temperature could be lowered and the fins could be cooked through the fire without burning the fins.

[0026]

As described above, the far-infrared cooking utensil of the present invention is attached to at least the inner wall of the far-infrared radiation container in which the cooking dish is placed inside the furnace chamber wall and / or inside the furnace chamber where there is no heat source and the cooking dish is placed in the chamber. By forming a sprayed surface,
From the ceramic sprayed surface heated by the hot air convection in the furnace chamber, the wavelength is converted to far-infrared rays that are easily absorbed by the cooked product and radiated, so that the surface of the cooked product is not excessively heated and is evenly distributed inside. Heat can be transmitted, and delicious cooking can be achieved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view for explaining an outline of an oven of the present invention.

FIG. 2 is a perspective view of the far-infrared radiation container of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Far-infrared container 5 Far-infrared radiation container 6 Furnace room 11 Metal dish 13 Cooking item 8-1 Bottom plate 8-2 Side wall 8-3 Ceiling wall 12 Flange part 13 Receiving part A Opening

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[Procedure amendment]

[Submission Date] August 1, 2000 (2008.1)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

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[Claims]

[Procedure amendment 2]

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[Correction target item name] 0006

[Correction method] Change

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[0006]

A first far-infrared cooking utensil of the present invention for achieving the above object comprises a far-infrared radiation container for heating and cooking, wherein the far-infrared radiation container has a cooking temperature. At least one opening through which heated hot air can flow in and out, and holding means for holding a cooking dish in which cooking material is placed floating inside the space, and holding at least one inner surface of the far-infrared radiation container. In the part, the particle size is 3 ~ 10μ
m of ceramic at a rate of 5 to 20 g / m ²
The heat-generating surface is formed in a furnace room filled with hot air, and is mounted separately from a heat source for generating the hot air.

[Procedure amendment 3]

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[Procedure amendment 6]

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[Correction target item name] 0016

[Correction method] Change

[Correction contents]

There are no particular restrictions on the ceramics that can be used. Quartz ceramics such as alumina, chromium oxide and silica sand, titania, various other ceramics, and mixtures of these as appropriate can be used . Flop plasma spraying method, it is possible to use a method which is usually performed as appropriate.

Claims (4)

[Claims] 1. A far-infrared radiation container for heating and cooking, the far-infrared radiation container having at least one opening through which hot air heated to a cooking temperature can flow in and out, and a cooking material therein. A holding means for holding a cooking dish on which the cooking dish is to be floated in a space, a ceramic plasma sprayed surface formed on at least a part of the inner surface of the far-infrared radiation container, and a heat source for generating the hot air in a furnace chamber filled with hot air. Far-infrared cookware designed to be installed away from. 2. The far-infrared ray according to claim 1, wherein said holding means comprises a receiving portion projecting in a shelf shape from an inner side wall of said far-infrared radiation container, and a flange projecting laterally from said cooking dish. Cookware. 3. The far infrared cooker according to claim 1, wherein the furnace chamber is a cooking oven chamber. 4. In a furnace chamber which heats and cooks a cooking material by filling with hot air, the outside of the wall surface is made heat-insulating so that heat does not escape to the outside from the wall surface of the furnace chamber heated by the hot air. A far-infrared cooking utensil having a ceramic plasma sprayed surface formed at least in part, and holding means for holding a cooking dish on which a cooking material is placed in the furnace chamber away from the heat source.