KR100733153B1 - Oven for Induction Heating Rice Cooker - Google Patents

Abstract

The present invention is not only beneficial to the human body, but also maintains the inherent taste and flavor of the food during cooking and provides excellent heat retention, so that the food is not well cooled, The present invention relates to an inner pot for an IH rice cooker which does not smell food, particularly rice, even when stored.

According to the present invention, there is provided a method of manufacturing an aluminum container, comprising: an inner container body of a natural stone material having an opened top surface; and an aluminum outer body molded outside the inner container body, Wherein the magnetic film of the material is coated by spray coating.

Electromagnetic induction, IH, rice cooker, inner pot, natural stone, magnetic film, spray coating

Description

{Oven for Induction Heating Rice Cooker}

1 is a sectional view of an inner pot for an electric pressure cooker according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view showing the inner pot for the IH rice cooker according to FIG. 1; FIG.

3 is an enlarged view of a portion of an inner pot for an IH rice cooker according to a second embodiment of the present invention.

4 is a cross-sectional view of an inner pot for an IH rice cooker according to a third embodiment of the present invention.

FIG. 5 is a diagram showing a far-infrared ray experiment result in the case where an inner pot is manufactured using a rolling mill in accordance with the present invention.

Description of the Related Art [0002]

20: inner pot 21: inner vessel body

22: aluminum outer body 23: step

24: magnetic film 25: handle

26:

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner induction heating cooker (hereinafter referred to as " IH ") type inner pot, and more particularly to an induction heating cooker This is about an inner pot for a rice cooker.

Conventional rice cookers use a "hot plate heater" similar to electric stoves. There is a hot plate heater at the bottom of the cooker, and a hot plate heated at the bottom of the inner pot. However, the IH electric rice cooker cooks the inside of the inner pot three-dimensionally like a firewood, and cooks rice.

IH rice cooker is a coil built in the body of rice cooker, when a high frequency current is flowed, a magnetic force line is generated around the coil and the magnetic force line passes through the pot. The magnetic line passing through the pot induces the secondary current, and the joule heat is generated by the secondary current and the resistance of the pot, so that the pot is heated hot, so that the food can be cooked.

Conventional inner pots for IH rice cookers have been manufactured using a single integrated stainless steel plate or CLAD (stainless steel + aluminum) plate. In this case, since most of them are produced by the press method, it is very easy to manufacture and has an advantage of excellent heat conductivity. However, there is a problem in that the food smells when the cooked food is stored for a long time.

The present invention has been conceived to solve the above-mentioned problems, and an object of the present invention is to provide a method and apparatus for a food which is naturally friendly and which is useful for a human body such as providing a far infrared ray, a large amount of minerals, The present invention provides an inner pot for an IH rice cooker that does not smell food, especially rice, even when the food is not stored well and is stored for a long time because the taste and aroma remain intact and excellent in thermal insulation.

According to an aspect of the present invention, there is provided a method of manufacturing an aluminum container, comprising: an inner container body of a natural stone material having an opened top surface; and an aluminum outer body cast on the outer surface of the inner container body, There is provided an inner pot for an IH rice cooker which is coated with a magnetic film of a material capable of generating heat by a magnetic force line.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments, which are to be taken in conjunction with the accompanying drawings.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of an inner pot for an IH rice cooker according to a first embodiment of the present invention, and FIG. 2 is a partially cutaway perspective view illustrating an inner pot for an IH rice cooker according to FIG.

Referring to FIG. 1, an inner pot 20 for an IH rice cooker according to the present invention includes an inner container body 21 having an opened upper surface and an aluminum outer body 22 cast on the outer surface of the inner container body 21.

The inner container body 21 is made of a natural stone material, and is made of a material such as elvan, ceramic, boulder, crumb stone, or the like, and is preferably made of bamboo or crushed stone.

These natural stone materials are natural-friendly, they release far infrared rays and minerals from the natural stones to provide smooth metabolism, and they are beneficial to the human body, while maintaining the unique taste and flavor of the food during cooking, Even if the food does not cool well and is stored for a long time, the food, especially the rice, does not give off the smell.

Thus, the inner pot according to the present invention has an advantage that it is resistant to heat by using natural stones, has high thermal conductivity and high degree of conservation (i.e., it does not heat up quickly and quickly), saves fuel, and does not stick to food.

A magnetic film 24 is coated on the surface of the aluminum outer body 22 to allow the pot to generate heat by a magnetic force line generated by an induction current. Preferably, the magnetic film 24 is coated to a height of about 1/5 to 1/3 from the bottom with respect to the entire height of the inner pot 20 (a portion indicated by a dotted line in FIG. 2).

The coating of the magnetic film 24 is performed by a spray coating method. The spray coating method is a type of arc-finished spraying, in which electricity is used as a heat source and an arc is generated using two metal wires as electrodes, And fog-like fine particulate metal melted into the layer is sprayed onto the base material together with the high-speed air stream to form a film.

The material of the magnetic layer 24 is low-priced general-purpose mild steel made of carbon + silicon + Mn (manganese) + steel. Here, the content ratio of carbon, silicon, and manganese to the steel is 0.15 to 0.23%, about 0.35%, and 1 to 1.5%, respectively.

Further, the aluminum outer body 22 has a step 23 for engaging the upper end of the inner container body 21. The step 23 contributes to increase the thermal conductivity of the inner pot than the case where the upper end of the inner container body 21 is exposed.

In addition, the inner container body 21 may have a predetermined number of concave and convex grooves (not shown) at a portion where the aluminum outer body is casted. The concave and convex grooves may include an inner container body 21 made of a natural stone material, For example, aluminum metal is filled in the recessed and recessed grooves so as to be fused when the casting operation is performed.

In addition, a water marking mark (not shown) for water control can be displayed on the inside of the inner container body. These graduation lines can be marked by drawing a scale line using, for example, an NC machine or the like, which is used in the field of machining a workpiece, a mold, and the like.

It should be understood that the inner container body 21 and the aluminum outer body 22 constituting the inner pot 20 should have a thickness enough to withstand a constant pressure generated during cooking. Preferably, the inner container body has a thickness of 4 to 4.5 mm, and the aluminum outer body has a thickness of 3.5 to 4 mm.

3 is an enlarged cross-sectional view of an inner pot for an IH rice cooker according to a second embodiment of the present invention, except that a knob 25 is provided at an upper end of the inner container body 21, Element. The handle 25 can be coupled to the inner vessel body using various methods such as welding, riveting, etc. according to the prior art.

FIG. 4 is a cross-sectional view of an inner pot for an IH rice cooker according to a third embodiment of the present invention. In the inner pot body 21, And has the same constituent elements as those of the inner pot described above except that it further includes concave grooves 26. [ That is, since the flow of the fluid in the inner pot is made in a vortex shape during cooking, the recessed portion 26 can rapidly spread the heat inside the pot, and as a result, the food is uniformly ripened, Helps to improve performance. Preferably, the recessed portion 26 is formed at a height h of 5 to 10 mm from the bottom surface.

FIG. 5 shows far-infrared ray experiment results in the case of manufacturing an inner pot using a rolling mill according to the present invention. In comparison with other materials such as ceramics (0.9 μm) and ceramics (0.824 μm) ≪ / RTI >

A method of manufacturing an inner pot for an IH rice cooker according to the present invention will now be described.

First, the inner container body 21 is processed into a cylindrical shape.

Next, the inner container body 21 is covered with a mold, and then aluminum casting is poured to form an aluminum outer body 22.

Next, after the aluminum outer body 22 is fused, the inner surface of the inner container body 21 is ground to have a predetermined thickness.

Finally, the magnetic film 24 is coated on the surface of the aluminum outer body 22 by a stain spray coating method. After covering the magnetic film 24, a surface coating for improving durability can be performed incidentally.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, in the inner pot for an IH rice cooker, the inner container body is made of a natural stone material, which is natural and friendly, and provides a large amount of far infrared rays, It provides the advantage of easily making food (bibimbap, nutrient-stone-rice, miso soup, etc.) at home at home.

In addition, the heat penetrates deeply into the food to generate heat, and the outside is heated substantially uniformly, so that the taste of the cooked food is improved. As a result of the nature of the natural stone, there is a side effect of not smelling even if kept for a long time.

Although the present invention has been described in connection with the preferred embodiments mentioned above, it is possible to make various modifications and variations without departing from the spirit and scope of the invention. Accordingly, the appended claims for utility model registration will include any modifications or alterations that come within the spirit of the invention.

Claims (8)

In an inner pot for an electromagnetic induction heating cooker, An aluminum outer body casted on the outside of the inner container body; and a member capable of heating the inner pot by a magnetic force line caused by an induced current, which is coated on the surface of the aluminum outer body, Wherein the inner pot is formed by a film forming process. [4] The inner pot for an electromagnetic heating cooker according to claim 1, wherein the aluminum outer body has a step formed on the outer surface of the inner container body. The inner pot for an electromagnetic induction heating cooker according to claim 2, wherein the inner container body has a thickness of 4 to 4.5 mm, and the aluminum outer body has a thickness of 3.5 to 4 mm. The magnetic film according to claim 1, wherein the magnetic film is coated with a spray coating method to a height of 1/5 to 1/3 from the bottom with respect to the total height of the inner pot, and uses a mild steel material made of carbon, silicon, manganese, and steel The inner pot for electromagnetic induction heating cooker. The inner pot for an electromagnetic induction heating cooker according to claim 4, wherein the content ratio of carbon, silicon, and manganese to the steel is 0.15 to 0.23%, about 0.35%, and 1 to 1.5%, respectively. The inner pot for an electromagnetic induction heating cooker according to claim 1, wherein the magnetic film is coated on a part of a surface of the aluminum outer body. [4] The inner pot for an electromagnetic induction heating cooker according to claim 1, wherein the inner container body further comprises a concave portion recessed inwardly of the container in the center of the bottom surface, wherein the concave portion is formed to 5 to 10 mm from the bottom surface. The inner pot for an electromagnetic induction heating cooker according to claim 1, wherein a recessed groove is formed on an outer surface of the inner container body.

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