KR100811742B1 - Inner oven of electric rice cooker and manufacturing method thereof - Google Patents

Abstract

The present invention relates to an inner pot for an electric pressure cooker and a manufacturing method thereof. The present invention is a carbon molded body pulverized and sintered to form an inner pot shape; It provides an inner pot for an electric pressure cooker comprising a; metal layer formed in close contact with the outer surface of the carbon molded body so that the upper end is higher than the upper end of the carbon molded body. In addition, the present invention (1) preparing a carbon structure; (2) pulverizing the carbon structure; (3) manufacturing the cylindrical carbon sintered body by sintering the pulverized carbon structure in a cylindrical container; (4) sintering and aging the cylindrical carbon sintered body produced; (5) forming the aged cylindrical carbon sintered body into an inner pot shape to produce a carbon molded body; And (6) forming a metal layer by casting a metal on an outer surface of the carbon molded body such that an upper end thereof is higher than an upper end of the carbon molded body.

Electric pressure cooker, sintered, carbon molded body, charcoal, carbon mineral, aluminum casting

Description

Inner pot for electric pressure cooker and its manufacturing method {INNER OVEN OF ELECTRIC RICE COOKER AND MANUFACTURING METHOD THEREOF}

1 is a perspective view of a general induction heating electric pressure cooker.

Figure 2 is a cross-sectional view of the inner pot for electric pressure cooker according to the present invention.

Figure 3 is a flow chart for explaining the manufacturing method of the inner pot for an electric pressure cooker according to the present invention.

<Explanation of symbols for the main parts of the drawings>

200; Inner pot 210; Carbon molded body

220; Metal layer 220; Teflon Coating Layer

The present invention relates to an inner pot for an electric pressure cooker and a method for manufacturing the same, and more particularly, by applying an inner pot including a carbon molded body and a metal layer, an electric pressure cooker which can prevent food from being discolored or deteriorated even if the food is stored for a long time. It relates to an inner pot and a method for manufacturing the same.

In general, the pressure cooker is a rice cooker to increase the boiling point of the water to improve the taste of the rice by increasing the pressure of the inner pot containing the rice when the rice is cooked using the boiling point of the water depending on the pressure. That is, when rice is cooked using a pressure cooker, the ratio of alpha of the starch of the rice is increased, thereby improving sweetness.

Typically, the higher the temperature of the water, the higher the rate at which the starch of the rice is alphaized. Therefore, as the pressure of the inner pot of the pressure cooker increases, the boiling point of the water increases, so that the ratio of the alpha of the inner pot becomes larger, and thus the rice is cooked quickly and the ratio of sweetness is increased, thereby improving the taste of the rice.

Like this, the pressure cooker is widely used because the rice is faster and the rice tastes better than the normal rice cooker.

As described above, the pressure cooker has been used to heat cooking inside the inner pot by using combustion heat to perform cooking, but recently, unlike a pressure cooker using the combustion heat, a heating heater that generates heat using a commercial electric machine The electric pressure cooker of the method using is popularized, in particular, the electric pressure cooker is applied to the induction heating method to heat the food while generating the induction current by the induction current generated by the inner pot is widely used.

Hereinafter, the structure of the induction heating electric pressure cooker will be described with reference to FIG. 1.

1 is a perspective view of a general induction heating electric pressure cooker, as shown in Figure 1, the electric pressure cooker is an installation space of the main body 10, the installation space of the main body 10 is formed by forming an open upper space Installed in the outer pot 20, the inner pot 30 is installed in the outer pot 20, the body lid 13 for opening and closing the upper portion of the body 10, the lower portion of the body lid 13 is installed Inner pot lid 33 for opening and closing the inner pot 30, the steam discharge means 40 for discharging steam when a predetermined or more steam pressure generated according to the cooking is configured to include a heating means 50 for heating the inner pot (30). .

At this time, the flange (flange; 31) corresponding to the upper edge portion of the inner pot 30 spans the outer pot 20, and the inner pot 30 is seated inside the outer pot 20, and the inner pot 30 is seated on the flange. (31) by fastening the locking device (not shown) to the portion to perform the cooking process.

On the other hand, the inner pot 30 is made of a material such as aluminum, aluminum alloy and stainless steel, the inner pot 20 is made of such a metallic material, so the rice is discolored or inherent taste when warmed for a long time The problem of change arises.

Thus, in order to solve the above problems, an inner pot formed of a multiplicity of stones or a carbon molded body is disclosed, but when the inner pot is formed of only a carbon molded body, the flange portion of the electric pressure cooker does not endure the pressure applied during the cooking process. There is a problem that the cooking process can not proceed smoothly because the abnormality in the safety performance, such as the molded body is destroyed or the lid is opened.

Therefore, the present invention has been made in order to solve the conventional problems as described above, the object of the present invention by using a carbon sintered body sintered material such as charcoal or carbon mineral as the main material of the inner pot to emit a large amount of anion and far infrared rays, The present invention provides an inner pot for an electric pressure cooker capable of preventing discoloration and deterioration of food, and a method of manufacturing the same.

Another object of the present invention, by applying an inner pot formed by casting a metal casting, such as aluminum on the outer surface of the carbon molded body to form a metal layer, the flange portion can withstand the high temperature and high pressure applied during the cooking process smoothly cooking process It is to provide an inner pot for an electric pressure cooker and a method of manufacturing the same.

In order to achieve the above object, the present invention is a carbon molded body pulverized and sintered to form an inner pot shape; It provides an inner pot for an electric pressure cooker comprising a; metal layer formed in close contact with the outer surface of the carbon molded body so that the upper end is higher than the upper end of the carbon molded body.

Here, the inner pot for an electric pressure cooker according to the present invention; preferably further comprises a Teflon coating layer formed on the inner surface of the carbon molded body.

In this case, preferably, the carbon structure is char or carbon mineral.

On the other hand, the carbon molded body (1) preparing a carbon structure; (2) pulverizing the carbon structure; (3) manufacturing the cylindrical carbon sintered body by sintering the pulverized carbon structure in a cylindrical container; (4) sintering and aging the prepared cylindrical carbon sintered body; And (5) forming the aged cylindrical carbon sintered body into an inner pot to produce a carbon molded body.

At this time, in the step (3), the pulverized carbon structure is sintered 40 to 50 hours at 2500 ~ 3500 ℃ in a cylindrical vessel, in the step (4), the cylindrical carbon sintered body is 60 ~ 80 at 2500 ~ 3000 ℃ Preferably, it is time sintered.

In addition, the metal layer is preferably formed by casting a metal casting, more preferably the metal layer is an aluminum layer formed by casting an aluminum casting.

According to another embodiment of the present invention, (1) preparing a carbon structure; (2) pulverizing the carbon structure; (3) manufacturing the cylindrical carbon sintered body by sintering the pulverized carbon structure in a cylindrical container; (4) sintering and aging the cylindrical carbon sintered body produced; (5) forming the aged cylindrical carbon sintered body into an inner pot shape to produce a carbon molded body; And (6) forming a metal layer by casting a metal on an outer surface of the carbon molded body such that an upper end thereof is higher than an upper end of the carbon molded body.

Here, the carbon structure is preferably char or carbon minerals.

In addition, preferably in the step (3), the pulverized carbon structure is sintered 40 to 50 hours at 2500 ~ 3500 ℃ in a cylindrical vessel, in the step (4), the cylindrical carbon sintered body at 2500 ~ 3000 ℃ Sintered for 60 to 80 hours.

On the other hand, preferably the metal layer is formed by casting aluminum.

In addition, the carbon molded body is preferably obtained by molding the cylindrical carbon sintered body into an inner pot form by CNC (computer numerical control) operation.

On the other hand, coating the Teflon on the inner surface of the carbon molded body to form a Teflon coating layer; preferably further comprises a.

The method may further include adding and stirring an additive to the pulverized carbon structure. Preferably, the additive is at least one of a vegetable polymer, charcoal, a soft carbon adhesive, or a hard carbon adhesive.

Also preferably, the method may further include spray coating or stenting the outer surface of the metal layer.

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

2 is a cross-sectional view of the inner pot for an electric pressure cooker according to the present invention.

As shown in FIG. 2, the inner pot 300 for an electric pressure cooker according to the present invention includes a carbon molded body 310, a metal layer 320, and a teflon coating layer 330.

The carbon molded body 310 is a main layer forming the inner pot 300, and is formed in a cylindrical shape in which an upper portion of the inner pot 300 is opened and a lower surface thereof is sealed, which is harmless to charcoal or carbon minerals (hereinafter, 'carbon Structure ". Here, the carbon structure is not limited to charcoal or carbon minerals only, and any carbon harmless material is included in the scope of the present invention.

The carbon molded body 310 is formed by using a high-purity material obtained through a predetermined process by pulverizing the carbon structure, and by applying such a carbon molded body 310 to the inner pot 300, the inner pot that is released a large amount of far infrared rays and anions 300 may be manufactured to minimize discoloration and deterioration of the cooked food.

The outer surface of the carbon molded body 310 is formed with a cast metal layer 320 by a casting method. The metal layer 320 is formed to surround the outer surface of the carbon molded body 310 and is formed so that the height of the opened upper end is higher than the upper end of the carbon molded body 310.

That is, the 'b' shaped edge portion extending from the upper end of the metal layer 320 is formed, which corresponds to the flange 321 is fastened to the locking device. In this way, by forming the inner portion of the flange 321 of the inner pot with a metal layer, and by making the inner pot so that the upper end portion of the carbon molded body 310 is lower than the flange 321 portion, the effect caused by the carbon molded body 310 is fully exhibited. While the flange 321 portion can withstand the high pressure applied during the cooking process, the cooking process is smoothly performed.

Here, the metal layer 320 is preferably made of aluminum, which is light and has excellent thermal conductivity and corrosion resistance, and the aluminum metal layer 320 may have a casting method according to the material of the carbon molded body 310.

Meanwhile, the Teflon coating layer 330 is formed on the inner surface of the carbon molded body 310, and the Teflon is coated on the inner surface of the metal layer in the upper portion of the inner pot formed only of the metal layer.

Teflon is known to have excellent non-tackiness, low friction coefficient, non-oiliness, heat resistance, electrical properties, low temperature durability and chemical resistance. In particular, the Teflon coating is excellent in non-tackiness that almost all materials do not stick to and non-tackiness that does not adhere well to water or oil. When applied to a rice cooker, it prevents rice from sticking to or sticking to the bottom. It is easy to clean because water does not get well.

As described above with reference to FIG. 3, a method of manufacturing the inner pot 300 for an electric pressure cooker according to the present invention in which the metal layer 320 is formed on the outer surface and the Teflon coating layer 330 is formed on the inner surface of the carbon molded body 310 is described. Will be explained.

Figure 3 is a flow chart for explaining the manufacturing method of the inner pot for electric pressure cooker according to the present invention. Hereinafter, the same components as in Fig. 2 are denoted by the same reference numerals.

First, prepare a carbon structure such as charcoal or carbon mineral mass made of charcoal or white charcoal (S100).

Next, the prepared carbon structure is pulverized (S110) and the carbon structure pulverized product of high purity is separated through a plurality of processes (S120).

When it is necessary to increase their cohesion according to the amount of the carbon structure is added by stirring any one of the natural additive vegetable polymer powder, charcoal consisting of pine or charcoal, soft carbon adhesive or hard carbon adhesive (S130).

Next, the separated high-purity carbon structure is put into a cylindrical container and sintered at 2500 to 3000 ° C. for 40 to 50 hours to produce a cylindrical carbon sintered body from which impurities are removed (S140).

Subsequently, in order to increase the physical properties (strength) of the manufactured cylindrical carbon sintered body, the carbon sintered body was aged by sintering for 60 to 80 hours in a kiln of 2500 to 3000 ° C (S150), and then the inner pot was prepared by computer numerical control (CNC). Producing a carbon molded body 310 of the form (S160). Here, the CNC work refers to a work of forming a cylindrical carbon sintered body that has a solid shape to have a shape of an inner pot and an outer shape of the inner pot.

Next, the metal layer 320 is formed on the outer surface of the completed carbon molded body 310 by the casting method (S180). At this time, the metal layer 320 to surround the outer surface of the carbon molded body 310, but is molded so that the upper end of the metal layer 320 is located at a position higher than the upper end of the carbon molded body 310, the upper end of the metal layer 320 ' B-shaped to form a flange 321 (S170). At this time, the metal layer 320 is preferably an aluminum layer formed by casting aluminum.

Subsequently, in the case of the inner pot 300 for the induction heating electric pressure cooker, the spray coating or the injecting of the aluminum layer is performed to apply the induction heating method (S180).

Here, thermal spray is a technique in which a powder or a linear material is changed into a molten liquid from a high temperature heat source to impinge on a substrate at high speed to form a rapidly-cooled and laminated film. For heating and melting of materials, heat sources such as combustion flames with high energy density, arc and plasma are required. The technique of forming a film on the surface of the substrate by using different materials for thermal spraying is one of the surface treatment methods that make use of the characteristics possessed by the substrate, to compensate for defects, and to diversify and enhance material functions.

And, the stamping operation is to embed a stainless gong on the outer surface of the aluminum layer to form induced heat.

Finally, Teflon is coated on the inner surface of the completed carbon molded body 310 and the upper inner surface of the metal layer 320 to form a Teflon coating layer (S190).

In the above, the best embodiment has been disclosed in the drawings and the specification. Although specific terms have been used herein for the purpose of description, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the invention as defined in the appended claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

According to the present invention, by applying a carbon molded body sintered materials such as charcoal and carbon minerals to the inner pot, far infrared radiation function, anion release function, humidity control function and anti-corruption function act on the food to be cooked intrinsic taste of food And nutrients can be maintained, not only to prevent food deterioration and discoloration due to long-term storage, but also to suppress the occurrence of the causative agent of food decay, heavy metals contained in the cooked food through the strong adsorption function of the carbon molded body By adsorbing and filtering harmful substances such as food, it is possible to eat food that is beneficial to the human body, and to absorb and block electromagnetic waves generated from an electric pressure cooker.

In addition, according to the present invention, by casting a metal casting, such as aluminum on the outer surface of the carbon sintering layer to form a metal layer, by applying an inner pot formed by forming a flange portion of the metal layer, the flange portion at high temperature and high pressure accompanying the cooking process Since it is not destroyed, the cooking process can be performed smoothly.

Claims (16)

Preparing a carbon structure, pulverizing the carbon structure, sintering the pulverized carbon structure in a cylindrical container to produce a cylindrical carbon sintered body, and sintering and aging the manufactured carbon sintered body; A carbon molded product manufactured by molding the aged carbon sintered body into an inner pot shape; The inner pot for an electric pressure cooker comprising a; metal layer formed in close contact with the outer surface of the carbon molded body so that the upper end is higher than the upper end of the carbon molded body. delete delete delete The method of claim 1, The pulverized carbon structure is sintered 40 to 50 hours at 2500 ~ 3500 ℃ in a cylindrical vessel, The cylindrical carbon sintered body is an inner pot for an electric pressure cooker, which is sintered at 2500 ~ 3000 ℃ 60 ~ 80 hours. delete delete (1) preparing a carbon structure; (2) pulverizing the carbon structure; (3) manufacturing the cylindrical carbon sintered body by sintering the pulverized carbon structure in a cylindrical container; (4) sintering and aging the prepared cylindrical carbon sintered body; (5) forming the aged cylindrical carbon sintered body into an inner pot shape to produce a carbon molded body; And (6) forming a metal layer by casting a metal on the outer surface of the carbon molded body so that the upper end is higher than the upper end of the carbon molded body; the inner pot for electric pressure cooker comprising a. The method of claim 8, The carbon structure is an inner pot manufacturing method for an electric pressure cooker, characterized in that the char or carbon mineral. The method of claim 8, In the step (3), the pulverized carbon structure is sintered 40 to 50 hours at 2500 ~ 3500 ℃ in a cylindrical vessel, In the step (4), the cylindrical carbon sintered body is an inner pot manufacturing method for an electric pressure cooker, characterized in that the sintered 60 to 80 hours at 2500 ~ 3000 ℃. The method of claim 8, The metal layer is an inner pot manufacturing method for an electric pressure cooker, characterized in that formed by casting aluminum. The method of claim 8, The carbon molded body is an inner pot manufacturing method for an electric pressure cooker, characterized in that obtained by molding the cylindrical carbon sintered body into the inner pot form by CNC (computer numerical control) operation. The method of claim 8, Coating the Teflon on the inner surface of the carbon molded body to form a Teflon coating layer; The inner pot for the electric pressure cooker further comprising. The method of claim 8, The method of manufacturing an inner pot for an electric pressure cooker, characterized in that it further comprises; adding an additive to the pulverized carbon structure and stirring. The method of claim 14, The additive is a method of manufacturing an inner pot for an electric pressure cooker, characterized in that at least one of a vegetable polymer, charcoal, soft carbon adhesive or hard carbon adhesive. The method of claim 8, An inner pot manufacturing method for an electric pressure cooker further comprising; spraying or stenting the outer surface of the metal layer.

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