KR200368268Y1 - Structure of inner kettle for electronic pressure cooker - Google Patents

Abstract

The present invention relates to an inner pot structure of an electric pressure cooker, and more particularly, to an inner pot structure of an electric pressure cooker equipped with natural stones to provide a high quality cooked food. The inner pot structure according to the present invention includes a natural stone container 110 and a metal layer 140 fused to the natural stone container 110, the natural stone container 110 has a stepped heat transfer through groove 121 and a fixed groove ( 131 and the binding groove 135 are formed, and the heat transfer protrusion 151, the fixing protrusion 161, and the binding portion 165 are shape-fitted to the metal layer 140 to prevent separation from each other.

Description

Structure of inner kettle for electronic pressure cooker

The present invention relates to an inner pot structure of an electric pressure cooker, and more particularly, to an inner pot structure of an electric pressure cooker equipped with a natural stone reinforced coupling means between the natural stone container and the metal layer of the inner pot.

1 is a partial cutaway perspective view showing the structure of a general electric pressure cooker and the function of the inner pot of a conventional electric pressure cooker. According to this, the electric pressure cooker is composed of a main body 2 and a lid 3, a heating plate 32 that generates heat by electricity is mounted on the bottom center of the main body 2, the inner pot 1 is the main body (2) It is mounted inside. In this state, when the lid 3 is closed and electricity is applied, the heating plate 32 is heated to transfer heat to the inner pot 1, and the food of the inner pot 1 is cooked by heating.

On the other hand, in order to have a better food taste, the inner pot (1) is manufactured in a structure containing natural stone in recent years, a typical example of this is the inner pot for electric pressure cooker of No. 20-0333003 disclosed in the Korean Utility Model Publication . This design is different from the present design, but it will be described with reference to the advantages of the present invention more clearly.

Figure 2 is an inner pot structure of the electric pressure cooker according to the prior art. As shown, the inner pot 1 is composed of a container body 10 having an open top surface, and a metal coating body 20 covering the outside of the container body 10. The outer periphery of the container body 10 is formed with a concave concave annular groove 12 at regular intervals, so that the metal is fused to the concave concave return groove 12 when coating by casting using a metal having fluidity. In addition, the bottom of the metal coating body 20 to form a hole 22 corresponding to the area in contact with the heating plate 32 of the electric pressure cooker so that the container body 10 is exposed. Therefore, the inner pot 1 of the electric pressure cooker has an effect of increasing the bonding force between the metal coating body 20 and the container body 10, and heat is easily transferred to the container body 10 through the heating plate 32.

However, the inner pot of the electric pressure cooker according to the prior art of the above-described configuration, although the bonding force between the metal coating body and the container body is still insufficient, the coupling of the two is often dropped, the moisture of food through the porous container body made of stone There is a problem that water is accumulated inside the electric pressure cooker during the cooking process.

The present invention is devised to solve the above problems, the object of the present invention is to improve the heat transfer efficiency from the heating plate, the inner layer of the inner pot composed of natural stone is configured to be better bonded to the outer layer composed of metal To provide a pressure cooker.

1 is a partial cutaway perspective view showing the function of the inner pot of a conventional electric pressure cooker.

Figure 2 is a cross-sectional view showing the inner pot structure of the electric pressure cooker according to the prior art.

Figure 3 is a cross-sectional view showing an embodiment of the inner pot structure of the electric pressure cooker according to the present invention.

Figure 4 is a sectional view showing another embodiment of the inner pot structure of the electric pressure cooker according to the present invention.

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

Inner pot: 1 Body: 2

Lid: 3 Container Body: 10

Urinary repayment groove: 12 Metallic coating: 20

Bore: 22 Hot Plate: 32

Inner pot: 100 Natural stone container: 110

1st floor: 120 heat transfer groove: 121

1st wall: 130 fixing groove: 131

1st wall upper part: 133 binding groove: 135

Metal layer: 140 Second floor: 150

Heat transfer protrusion: 151 Second wall: 160

Fixing protrusion: 161 Tether: 165

The inner pot structure of the electric pressure cooker according to the present invention is a natural stone container made of a natural stone material comprising a first bottom constituting a bottom surface, and a first wall extending upward from the first bottom circumference to form a wall, In a step shape in a section corresponding to the upper part of the heating plate installed in the electric pressure cooker body on the first floor and the metal layer having a metal material including the second floor and the second wall respectively overlapping the outer surface of the first floor and the first wall. It is characterized in that it comprises a; heat transfer and coupling means consisting of a heat transfer projection formed to be formed in the heat transfer through groove and the heat transfer through groove formed in the second bottom.

At this time, it is preferable that a plurality of fixing grooves 131 concave inwardly are formed in both first walls 130 of the natural stone container, and fixing protrusions conforming to the shape thereof are formed in the metal layer.

In addition, the upper end of the second wall of the metal layer has a step extending outwardly, and the binding portion extending inward to be bent downward to surround the upper end of the first wall of the natural stone container, the first of the natural stone container It is preferable that a binding groove is formed on the inner surface of the upper end of the wall to fit the binding portion.

Hereinafter, with reference to the drawings of the embodiment will be described in more detail. However, the scope of the present invention is not limited to the following examples, and various modifications can be made within the scope that can be easily implemented by those skilled in the art. Within the scope of the modification, the type of natural stone container, the shape and thickness of the inner pot, the shape change of the fixing groove and the fixing protrusion, the shape of the heat transfer groove and the heat transfer protrusion, and the like will be described below.

3 and 4 is a cross-sectional view of each showing an embodiment of the inner pot structure of the electric pressure cooker according to the present invention. However, the present invention refers to the structure of the electric pressure cooker as the inner pot structure of the electric pressure cooker, referring to the conventional electric pressure cooker structure of FIG. 1, and the first and second names of the components are for distinguishing and displaying similar components. This is a unique name, not an order for each component. As shown, the inner pot 100 is a cooker that is mounted inside the main body of the electric pressure cooker, the inner pot structure is composed of a large natural stone container 110 and a metal layer 140 overlapping the outside of the natural stone container (110).

When the natural stone container 110 is mounted on the main body of the first floor 120 is provided with a stepped heat transfer through groove 121 on the heating plate 32 installed in the electric pressure cooker main body, and the first floor 120 of It comprises a first wall 130 extending from the tip of the circumference to form an electric pressure cooker body, wherein forming the heat transfer groove 121 in a step shape is a natural stone container 110 and a metal layer 140 and In order to prevent the thermal expansion coefficient of the separation from each other, the staircase is usually formed in 1.5 stages and configured to become narrower toward the bottom. However, even if the number of steps is changed or configured to be narrower toward the top, it is natural that it belongs to the scope of the present invention.

In addition, a plurality of trapezoidal fixing grooves 131 are formed on the outer surfaces of both first walls 130 of the natural stone container 110, the widths of which are wider toward the inside. The fixing groove 131 has a trapezoidal shape in order to increase the bonding force between the natural stone container 110 and the metal layer 140, but is not limited to the above shape, and may be implemented in various shapes such as a circle, a triangle, and a rectangle. Of course it can.

In addition, a binding groove 135 is formed at the inner wall upper end portion 133 to which the binding portion 165 to be described below is fused. As described above, the binding portion 165 and the binding groove 135 are also matched to the upper end portion 133 of the wall 133 to increase the coupling force between the natural stone container 110 and the metal layer 140.

On the other hand, natural stone container 110 is a layer that forms a space for food is accommodated and cooked, usually made of natural stone material, typically germanium ore, jade is used and irradiates far infrared rays even if not natural stone without regard to other names Stones can also be used without limitation to the extent that it is not harmful to the human body, thinning may be added. The natural stone is usually heat-treated at 600 ° C. or higher, thereby discharging the gas in the natural stone to be processed to be compatible with the metal layer 140.

The metal layer 140 is an outer layer which is generally fused with aluminum-chromium on the outer surface of the natural stone container 110 and formed to correspond to the natural stone container 110 and includes a second bottom 150 and a second wall 160. The second bottom 150 has a heat transfer protrusion 151 protruding to fit in the heat transfer groove 121. The heat transfer protrusion 151 is fused in a step shape so as to fit into the heat transfer groove 121, and the separation of the natural stone container 110 and the metal layer 140 is prevented, and the food to be cooked from the heating plate 32. Heat transfer becomes easy.

The second wall 160 is provided with a fixing protrusion 161 which is shaped to fit into the fixing groove 131 of the natural stone container 110, and the stepped portion 167 extending outward at the upper end 163 of the second wall 160. ) And a binding portion 165 extending inwardly. The fixing protrusion 161 prevents the natural stone container 110 and the metal layer 140 from being separated from each other, and the step 167 extends to a predetermined length to be caught by the electric pressure cooker body, and the binding unit 165 is formed of a natural stone container ( It extends in a shape surrounding the upper end 133 of the 110. That is, the binding portion 165 is extended while contacting the upper end 133 of the natural stone container 110 and then bent downward, the portion bent to the bottom is bound to the binding groove 135 of the natural stone container 110.

Next will be described the operation and function according to the present invention. After the inner pot 100 is mounted on the main body of the electric pressure cooker, the lid is covered, and when electricity is applied, the heating plate 32 of the bottom of the electric pressure cooker body is heated, and heat is transferred to the metal layer 140. The heat conducted to the bottom of the metal layer 140 is not only conducted to the wall, but also a lot of heat is transferred to the inside of the inner pot 100 through the heat transfer protrusion 151 formed to penetrate the heat transfer groove 121 to cook food. do. On the other hand, as the heat is transferred, the separation between the two layers may occur due to the thermal expansion coefficient difference between the natural stone container 110 and the metal layer 140, or may occur, but according to the present invention, the stepped heat transfer protrusion 151 is The shape fits into the heat transfer groove 121, the fixing protrusion 161 is shaped into the fixing groove 131, and the binding portion 165 is shaped into the binding groove 135 so that separation and separation between the two layers is achieved. Will be prevented.

According to the present invention of the above configuration, since the heat generated from the heating plate passes only through the metal layer to the food, the heat transfer efficiency is increased, and the coupling means for coupling both to the natural stone container and the bottom, wall, etc. of the metal layer is adopted so that both are separated Solved the problem.

Although the invention has been described with respect to the preferred embodiments mentioned above, many other possible modifications and variations can be made without departing from the spirit and scope of the invention. Accordingly, the appended claims are intended to cover such modifications and variations as fall within the true scope of the invention.

Claims (4)

A natural stone container 110 formed of a natural stone material including a first bottom 120 forming a bottom surface and a first wall 130 extending upward from a circumference of the first bottom 120 to form a wall; The metal layer 140 of metal material having a second bottom 150 and a second wall 160 overlapping the outer surface of the first bottom 120 and the first wall 130 of the natural stone container 110, respectively. ; And Shaped in the heat transfer through groove 121 and the heat transfer through groove 121 formed in the section corresponding to the upper portion of the heating plate 32 installed in the electric pressure cooker body on the first bottom 120 and the second bottom 150. The inner pot structure of the electric pressure cooker, characterized in that it comprises a; heat transfer and coupling means consisting of a heat transfer protrusion 151 is formed to fit. The method according to claim 1, The heat transfer groove 121 is formed in a stepped shape, the heat transfer protrusion 151 is inner pot structure of the electric pressure cooker, characterized in that the shape is fused and fused. The method according to claim 1 or 2, A plurality of fixing grooves 131 concave inwardly are formed in both first walls 130 of the natural stone container 110, and the fixing layer 161 is formed in the metal layer 140. Inner pot structure of electric pressure cooker. The method according to claim 3, The upper end 163 of the second wall 160 of the metal layer 140 has an inner step 167 extending outward and an inner side of the upper end 133 of the first wall 130 of the natural stone container 110. And a binding portion 165 extending downward and bent downward, and the binding groove 135 is formed on the inner surface of the upper end portion 133 of the first wall 130 of the natural stone container 110 so as to be shaped with the binding portion 165. The inner pot structure of the electric pressure cooker, characterized in that is formed.