JPH08213160A - Induction heater cooker - Google Patents

Abstract

PURPOSE: To cook food having curved surface evenly and efficiently by burying the food in the particles of iron powder or iron balls in a pan formed out of an electric insulation material, and applying induction heat to the particles. CONSTITUTION: A cooking vessel formed out of a glass pan 11 and iron powder 12 is placed on a heater coil 13 and, then, a food 14 such as a sweet potato is buried in the powder 12. Thereafter, the powder 12 is induction heated with the coil 13, thereby three-dimensionally heating the entire surface of the sweet potato 14 for preparing a baked food. In this case, the mixed particles of iron powder or iron ball, and sand or pebbles, or particles of high thermal conductivity may be used, instead of the above iron powder particles or the like, to improve cooking functions or shorten the cooking time.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an induction heating cooker.

[0002]

2. Description of the Related Art A conventional induction heating cooker has a structure as shown in FIG. That is, the high frequency current supplied from the inverter (not shown) is converted into a high frequency magnetic field by the heating coil 13, and the pan is directly heated by the eddy current flowing to the bottom of the pan 2 made of a material such as iron or stainless steel by electromagnetic induction. The cooked food 3 is heated and cooked.

[0003]

When cooking a pottery in such a conventional induction heating cooker, since the bottom of the pan is flat, the cooked food is uniformly heated unless it is in a flat shape in close contact with the bottom of the pan. It was difficult to cook. Further, there is a problem that the food and the cooking method are limited such that the food is heated only from the lower surface side in contact with the pan.

The present invention is intended to solve the problems of the above-described conventional structure. In grilling, it is possible to heat a dish having a curved surface and to cook the dish three-dimensionally. Since heating from the entire surface is possible,
It is a first object of the present invention to provide an induction heating cooker having a characteristic that the range of application of induction heating for cooking is expanded.

A second object is to achieve the first object and further improve the cooking performance.

A third object is to achieve the first object and further shorten the cooking time.

[0007]

In order to achieve the first object, the first means of the present invention comprises a cooking container and a heating coil, and the cooking container is made of iron powder or iron balls. Granules and a pot made of an electrically insulating material, and the pot holds granules made of iron powder or iron balls that are induction-heated by the heating coil and made of iron powder or iron balls. The induction heating cooker heats the cooking material embedded in the granular material.

In order to achieve the second object, the second means of the present invention has a cooking vessel and a heating coil, and the cooking vessel comprises a mixed granule and an electric insulator. The mixed granules are composed of iron powder or iron balls and sand or stone, and the pan holds the mixed granules and is an induction heating cooker for heating the food embedded in the mixed granules. Is.

In order to achieve the third object, the third means of the present invention has a cooking vessel and a heating coil, and the cooking vessel comprises a mixed granule and an electric insulator. The mixed granules are composed of iron powder or iron balls and granules having good thermal conductivity, and the pot holds the mixed granules and induction cooking for heating the food embedded in the mixed granules. It is a container.

[0010]

The first means of the present invention is to pass the high frequency magnetic field generated by the heating coil through the pot made of an electrical insulator,
By inductively heating the iron powder or the iron balls held in the pan to generate heat, the cooked food embedded in the granular body made of the iron powder or the iron balls acts to be cooked.

The second means of the present invention is that the high frequency magnetic field generated in the heating coil is transmitted through the pot made of an electrically insulating material and is held in the pot made of an electrically insulating material. By inducing heat to heat the iron powder or iron balls in a mixture of powder or iron balls and sand or stone to heat the food to be cooked, and heating the sand or stone by the heat of the iron powder or iron balls. Far-infrared rays are efficiently radiated from the sand or stone by heating the sand or stone to a high temperature, and far-infrared ray heating is also performed to heat the cooking material embedded in the mixed granules.

The third means of the present invention is that the high frequency magnetic field generated by the heating coil is transmitted through the pot made of an electrically insulating material and is held in the pot made of an electrically insulating material. Induction heating of iron powder or iron balls in a mixture of powder or iron balls and granules with good thermal conductivity to rapidly generate heat from iron powder or iron balls with granules with better thermal conductivity than iron In addition, by uniformly dispersing and heating the cooked product, the cooked product embedded in the mixed granules acts to be cooked.

[0013]

【Example】

(Embodiment 1) Hereinafter, an induction heating cooker for preparing roasted potatoes, which is a first embodiment of the present invention, will be described with reference to FIG. In FIG. 1, 11 is a glass pot which is an electrical insulator, 12 is iron powder, 13 is a heating coil, and 14 is sweet potato. The iron powder 12 is held by the glass pot 11, and the iron powder 12 and the glass pot 11 form a cooking container. The sweet potato 14 is embedded in the iron powder 12.

A high frequency current supplied from an inverter (not shown) is converted into a high frequency magnetic field by the heating coil 13. Since glass is an electrical insulator, eddy current due to electromagnetic induction does not flow. Therefore, the high frequency magnetic field generated from the heating coil 13 passes through the glass pot 11. The transmitted high frequency magnetic field causes an eddy current to flow through the iron powder 12 due to electromagnetic induction, and the iron powder 12 generates heat. The sweet potato 14 embedded in the iron powder 12 is cooked by the heat generated from the iron powder 12 to prepare a baked potato.

As described above, according to this embodiment, the sweet potato can be cooked by inductively heating the iron powder. That is, it is possible to realize an induction heating cooker used for preparing baked potatoes.

(Example 2) Hereinafter, an induction heating cooker used for preparing baked potatoes, which is a second example of the present invention, will be described.
This will be described with reference to FIG. In FIG. 2, 11 is a glass pot which is an electrical insulator, 22 is a mixed granule made of iron powder and sand, and the mixed granule 22 and the glass pan 11 form a cooking vessel. 13 is a heating coil and 14 is a sweet potato. The mixed granules 22 are held by the glass pan 11, and the sweet potatoes 14 are embedded in the mixed granules 22.

A high frequency current supplied from an inverter (not shown) is converted into a high frequency magnetic field by the heating coil 13. Since glass is an electrical insulator, eddy current due to electromagnetic induction does not flow. Therefore, the high frequency magnetic field generated from the heating coil 13 passes through the glass pot 11. The transmitted high-frequency magnetic field causes an eddy current to flow through the iron powder in the mixed particles 22 by electromagnetic induction to cause induction heating to heat the sweet potato 14 and
By heating the sand in the mixed particles 22 by the heat generated by the iron powder, the temperature of the sand is raised to a high temperature and the far infrared rays are efficiently radiated from the sand, and the far infrared rays is also heated to embed the sweet potato 14 embedded in the mixed particles 22. A baked potato is prepared by cooking with heat.

As described above, according to this embodiment, the induction heating of the iron powder heats the sweet potato and the heating of the sand causes the far infrared rays to be radiated from the sand to perform the far infrared heating as well. Can be cooked. This makes it possible to realize an induction heating cooker for preparing baked potatoes having improved cooking performance by using far-infrared heating as compared with the first embodiment.

(Embodiment 3) Hereinafter, an induction heating cooker for preparing baked potatoes, which is a third embodiment of the present invention, will be described.
This will be described with reference to FIG. In FIG. 3, 11 is a glass pot which is an electrical insulator, 32 is a mixed granule made of iron powder and aluminum powder, and the mixed granule 32 and the glass pan 11 form a cooking vessel. 13 is a heating coil and 14 is a sweet potato. The mixed granules 32 are held by the glass pot 11, and the sweet potatoes 14 are embedded in the mixed granules 32.

A high frequency current supplied from an inverter (not shown) is converted into a high frequency magnetic field by the heating coil 13. Since glass is an electrical insulator, eddy current due to electromagnetic induction does not flow. Therefore, the high frequency magnetic field generated from the heating coil 13 passes through the glass pot 11. The transmitted high-frequency magnetic field causes an eddy current to flow in the iron powder in the mixed particles 32 by electromagnetic induction to perform induction heating, and the heat generated from the iron particles is rapidly and uniformly mixed by the aluminum powder having better thermal conductivity than iron. A sweet potato is prepared by dispersing the potatoes in the inside and cooking the sweet potato 14 by heating.

As described above, according to this embodiment, the sweet potato is heated by inductively heating the iron powder, and the heat generated from the iron powder by the aluminum powder having good thermal conductivity is rapidly and uniformly mixed. The potatoes can be cooked by dispersing them inside and heating. This is the induction heating cooking used for the preparation of roasted potatoes in which the cooking time is further shortened by using the mixed granules in which the aluminum powder having good thermal conductivity is mixed in addition to the iron powder as compared with the first embodiment. Can be realized.

In the above-mentioned three embodiments, the induction heating cooker used for the preparation of roasted potatoes has been described. Of course, the cooker is not limited to this cooked product, and it can be applied to various cooked products. is there. Further, it goes without saying that the second and third embodiments can be used in combination and the improvement of cooking performance and the reduction of cooking time can be realized at the same time. Further, although iron powder is used in the above-mentioned embodiment, iron balls may be used, and glass is used as the electrical insulator, but it goes without saying that various electrical insulators such as ceramic glass can also be used. . Further, the same effect can be obtained by replacing the cooking container of the above-mentioned embodiment with the pan of the induction heating type rice cooker.

[0023]

As described above, according to the first means of the present invention, it is possible to heat a cooked product having a curved surface and to heat the cooked product three-dimensionally from the whole surface in the grilled food cooking. Therefore, it is possible to realize an induction heating cooker having a feature that the range of application of induction heating for cooking is expanded.

According to the second means of the present invention, the heat of the iron powder or the iron balls heats the sand or stone to raise the temperature of the sand or stone to efficiently radiate far infrared rays from the sand or stone. By performing far-infrared heating and cooking the food embedded in the mixed granules, an induction heating cooker with improved cooking performance can be realized.

Further, according to the third means of the present invention, the heat generated from the iron powder or the iron balls is rapidly and uniformly dispersed by the granules having better thermal conductivity than iron to heat the food. By heating the cooking material embedded in the mixed granules, an induction heating cooker with a shorter cooking time can be realized.

[Brief description of drawings]

FIG. 1 is a sectional view showing an induction heating cooker according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing an induction heating cooker according to a second embodiment of the present invention.

FIG. 3 is a sectional view showing an induction heating cooker according to a third embodiment of the present invention.

FIG. 4 is a sectional view of a conventional induction heating cooker.

[Explanation of symbols]

 2 Pans 3 Cooked foods 11 Glass pans 12 Iron powder 13 Heating coils 14 Sweet potatoes 22 Mixed granules 32 Mixed granules

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Izumio Hirota 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Hideki Omori 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. A heating coil, a granule made of iron powder or iron balls, and a cooking container made of a pot made of an electrically insulating material. The pot is induction-heated by the heating coil. An induction heating cooker that holds a granular body composed of iron powder or iron balls and heats a food embedded in the granular body composed of iron powder or iron balls. 2. The cooking container comprises a mixed granule and a pot composed of an electrical insulator, the mixed granule comprises iron powder or iron balls, and sand or stone, and the pan comprises the mixed granule. The induction heating cooker according to claim 1, wherein the induction heating cooker is configured to hold the. 3. The cooking container comprises a mixed granule and a pot made of an electrically insulating material. The mixed granule comprises iron powder or iron balls and a granule having good thermal conductivity. The induction heating cooker according to claim 1, which holds the mixed granules.