KR200455454Y1

KR200455454Y1 - Electric Oil Core Skilllet

Info

Publication number: KR200455454Y1
Application number: KR2020110000290U
Authority: KR
Inventors: 손종임
Original assignee: 주식회사 동원금속
Priority date: 2011-01-11
Filing date: 2011-01-11
Publication date: 2011-09-06

Abstract

The present invention relates to an electric oil core skillet in which food is indirectly heated by a heat transfer medium heated by an electric heater. An oil core skilllet according to an embodiment of the present invention is an electric oil core skilllet including a heat transfer medium filled in a double partition structure of an inner skin and an outer shell and an electric heater for heating the heat transfer medium, the bottom of the outer shell. The inner surface center of the surface protrudes upwardly to be brought into contact with the inner surface center of the bottom surface of the endothelium, and the edge of the outer skin and the rim of the inner skin contact each other to seal the heat transfer medium.

Description

Electric Oil Core Skillet

The present invention relates to a cooking vessel, and more particularly, to an electric oil core skillet in which food is indirectly heated by a heat transfer medium heated by an electric heater.

Containers used for cooking it is important to evenly distribute the heat applied to the food during cooking to warm the food evenly. For this purpose, an electric oil core skillet (or also known as an oil core frying pan) product which manufactures the body of the container in a double wall structure, fills the heat transfer medium in the double wall structure and heats it to heat the entire container. I'm getting attention.

In conventional electric oil core skilllets, when the heat transfer medium is heated to cause internal expansion, a pressure regulating valve may be provided to safely release the pressure, or, optionally, a weak mechanical strength of the endothelium forming the double wall structure. It is made of a material having a method of inducing a natural deformation of the endothelium to relieve pressure during use. Of these methods, the latter strain induction method causes a change in the appearance of the electric oil core skillet, which is not aesthetically desirable, so that the above-mentioned pressure regulating valve is generally used.

However, even in the case of using the pressure control valve, when using an inner skin having a weak mechanical strength compared to the outer skin, the central portion of the oil core skillet may bulge upward due to an increase in pressure during use, and may deteriorate aesthetically gradually. Dishes that require a flat heated surface, such as ups and downs, can cause problems that are difficult to cook.

Therefore, the technical problem to be solved by the present invention, in response to the increase in the pressure of the internal space during the use of the electric oil core skillet and the product life, the electric endothelial can maintain the mechanical and aesthetic characteristics without thermal deformation and heat discoloration To provide an oil core skilllet.

Electric oil core skillet according to an embodiment of the present invention for achieving the above technical problem, an electric oil core including a heat transfer medium and an electric heater for heating the heat transfer medium filled in the double partition structure of the inner skin and the shell. Skilllet. In the electric oil core skilllet, the inner surface center of the bottom surface of the outer shell protrudes upwardly to be brought into contact with the inner surface center of the bottom surface of the inner shell, and the edge portion of the outer skin and the edge portion of the inner skin contact each other. Seal the heat transfer medium.

In some embodiments, the engagement of the inner surface center of the shell and the inner surface center of the shell may be accomplished by spot welding from the outer surface center of the shell to the inner surface center of the shell. In some embodiments, the electric oil core skilllet may further comprise a liner for welding on the outer surface center of the shell.

The electric heater may be disposed on the bottom surface around a central portion of the inner surface protruding upward of the shell. In some embodiments, an insulating member may be disposed between the electric heater and the inner surface of the endothelium opposite the electric heater. Part or all of the heat insulating member may have a pattern in which the shape of the electric heater is projected. The heat insulating member may be glass, ceramic, metal ash or a combination thereof. The heat insulating member may be attached on the inner surface of the endothelium.

The edge portion of the envelope and the edge portion of the endothelium may be coupled by curling bonding. The heat transfer medium may be air, water or thermal fluid charged to surround the electric heater.

According to the embodiment of the present invention, since the endothelial and the outer shell of the oil core skillet is made at the center of each bottom surface, the problem that calories can be concentrated in the center during cooking is solved, and the whole including the endothelial bottom surface. Uniform heat transfer can be obtained.

In addition, according to an embodiment of the present invention, even if there is an increase in pressure due to the expansion of air which may inevitably exist with the heat transfer medium existing in the internal space during use of the oil core skillet, the central portion of the endothelium is mechanically located at the center of the shell. Since it is fixed, the thermal deformation at which the bottom surface of the endothelium with the use of the oil core skillet can be suppressed or reduced. In addition, during the life of the oil core skillet and during the life of the product, the endothelial bottom of the oil core skillet remains flat, which not only maintains the aesthetic characteristics of the product used in the kitchen, And cooking of dishes requiring a flat heated bottom as before is possible for a long time.

1 is an exploded perspective view of an electric oil core skilllet according to an embodiment of the present invention.
2 is a cross-sectional view taken along line II-II of the electric oil core skilllet in which the endothelial and the outer shell are combined.
3 is an exploded perspective view of an electric oil core skilllet according to another embodiment of the present invention.
4 is a cross-sectional view taken along line IV-IV of the electric oil core skilllet in which the endothelial and the outer shell are combined.

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

Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art, the following examples can be modified in many different forms, the scope of the present invention It is not limited to an Example. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

In addition, in the following drawings, the thickness or size of each layer is exaggerated for convenience and clarity of description, the same reference numerals in the drawings refer to the same elements. As used herein, the term “and / or” includes any and all combinations of one or more of the listed items.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. Also, as used herein, "comprise" and / or "comprising" specifies the presence of the mentioned shapes, numbers, steps, actions, members, elements and / or groups of these. It is not intended to exclude the presence or the addition of one or more other shapes, numbers, acts, members, elements and / or groups.

Although the terms first, second, etc. are used herein to describe various members, parts, regions, layers, and / or parts, these members, parts, regions, layers, and / or parts are defined by these terms. It is obvious that not. These terms are only used to distinguish one member, part, region, layer or portion from another region, layer or portion. Accordingly, the first member, part, region, layer or portion, which will be described in detail below, may refer to the second member, component, region, layer or portion without departing from the teachings of the present invention.

Embodiments of the present disclosure relate to an electric oil core skillet in which food is indirectly heated by a heat transfer medium heated by an electric heater, and using the indirect heating, steam, grill, fryer, slow cooking, pot, oven Or cooking methods by other heating may be carried out, the present invention is not limited by these terms.

1 is an exploded perspective view of the electric oil core skillet 100 according to an embodiment of the present invention, Figure 2 is a line II of the electric oil core skillet 100 is combined with the inner shell 10 and the outer shell 20 Sectional view taken along -II.

1 and 2, the electric oil core skilllet 100 includes a container having a double partition structure of an inner shell 10 and an outer shell 20. The endothelium 10 and the sheath 20 have inner surfaces 10A and 20A and outer surfaces 10B and 20B, respectively, based on the combined state of FIG. 2. The inner skin 10 and the outer skin 20 may be coupled to each other and at least some of the opposing inner surfaces 10A and 10B may be spaced apart from each other to form an inner space.

An electric heater 30 is disposed in the internal space, and the heat transfer medium 40 heated by the electric heater 30 is filled. do. Heat transfer medium 40 may be any suitable fluid capable of convection, such as air, water or thermal oil. However, such heat transfer medium 30 is exemplary and may be a metal-based and carbon-based material that is superior in any suitable thermal conductivity.

The electric heater 30 for heating the heat transfer medium 40 may be any heat source that is easy to adjust temperature by electrical control, but the present invention is not limited thereto. For example, the heat source may be an insulated resistance wire, a high frequency heating wire, a heating lamp, and a thin film heater. In the illustrated embodiment, the resistance line 30 is illustrated. The shape of the resistance wire 30 may have a double overlapping structure, as shown, or other structures such as a spiral structure or a radial structure, and a combination thereof, as required, but the present invention is not limited thereto. .

The oil core skilllet 100 transmits a power casing 31 for accommodating a power plug (not shown) for supplying power to the electric heater 30 and electric power supplied from the power plug to the electric heater 30. The fixing member 33 may further include a fixing member 33 for fixing the conductive member 32 and the resistance wire 30 in the internal space. Although not shown, in some embodiments, a temperature sensor, such as a thermocouple, for sensing the temperature of the heat transfer medium 40 may be further disposed within the interior space.

Coupling of the endothelium 10 and the sheath 20 is achieved by contacting each rim with each other, whereby the filled heat transfer medium 30 is sealed. Coupling of the endothelium 10 and the outer shell 20 may be achieved by a curling joint that is fastened by pressing bending at a time after overlapping the respective edge portions of the endothelium 10 and the outer shell 20 as shown in FIG. 2. have. The pressure bending process is more reliable in terms of sealing than conventional welded fastening structures.

In some embodiments, the engagement of the endothelium 10 and the sheath 20 is also accomplished at the central portions 10AC, 20AC of each bottom surface. As shown in FIG. 1, the inner surface center portion 20AC of the bottom surface of the outer shell 20 protrudes upward toward the inner shell 10. The central portion 20AC of the upwardly projecting shell 20 is joined in contact with the inner surface center portion 10AC of the bottom surface of the opposing endothelium 10 (the dotted line indicates the inner surface center region projected on the outer surface of the endothelium). . The central portion 20AC of the outer shell 20 has a flat surface so as to be in surface contact with the inner surface 10A of the inner shell 10. The flat area of the central portion 20AC of the shell 20 may be appropriately selected in consideration of mechanical strength and heat transfer efficiency at 5% to 40% of the shell diameter.

The engagement between the endothelium 10 and the central portion 10AC, 20AC of the outer shell 20 is the inner surface central portion 10AC of the endothelium 10 from the outer surface central portion 20BC of the outer shell 20, as indicated by the arrow SW. It can be achieved by spot welding in the () direction. However, this is exemplary and the coupling between the endothelium 10 and the central portion 10AC, 20AC of the envelope 20 may be achieved through laser welding. In some embodiments, a liner 20L having a predetermined thickness for welding may be attached on the outer surface center portion 20BC of the outer shell 20 to prevent thermal damage of the outer shell 20 by the welding process. . The thickness and material of the liner 20L may be a metal material suitably selected in accordance with the thermal load of the welding process.

The electric heater 30 may be an insulated resistance wire, as shown in FIG. 1, and may be disposed on a bottom surface around the inner surface center portion 20AC of the upwardly drawn inner surface of the shell 20. In some embodiments, the area 20S1 in which the electric heater 30 is disposed may be lower than the main surface 20S2 of the shell 20. In this case, the inner surface center part 20AC which protrudes upwards is higher than the main surface 20S2 of the outer shell 20 from the level of the area | region 20S1 in which the electric heater 30 is arrange | positioned, as shown in FIG. It must protrude.

As described above, since the coupling between the inner shell 10 and the outer shell 20 of the oil core skillet 100 is made at the center of each bottom surface, there is substantially no heat transfer medium in the central region. Accordingly, according to the present embodiment, the problem that heat can be concentrated in the center during cooking is solved, and uniform heat transfer can be obtained in the whole including the endothelial bottom surface.

In addition, according to an embodiment of the present invention, even if there is an increase in pressure due to the expansion of air which may inevitably exist with the heat transfer medium present in the inner space during the use of the oil core skillet, the central portion of the endothelial 10 is the outer shell 20 Since it is mechanically fixed to the central portion of the), the thermal deformation of the bottom surface of the endothelial 10 due to the use of the oil core skillet 100 can be suppressed or reduced. In addition, since the endothelial bottom surface of the oil core skillet 100 can be kept flat during use and during the life of the product, the aesthetic characteristics of the product used in the kitchen Not only can it be kept intact, it is also possible to cook dishes that require flat and heated floors, such as ups and downs, for a long time.

In some embodiments, a pressure regulating valve 50 may be further disposed on the sidewall of the shell 20. The pressure regulating valve 50 forms a through hole 51 at a predetermined height of the outer shell 20, and according to the pressure of the lid 52 and the internal space for opening / closing the through hole 51, It may include a spring 53 capable of switching control. The through-hole 51 is not only used for pressure relief during use of the oil core skillet 100, but also for filling a heat transfer medium 40 such as heat medium oil in the internal space in the manufacture of the oil core skillet 100. It can be used and is normally occluded by filling the heat transfer medium 40 and then laying the pressure regulating valve 50. In some embodiments, the pressure regulating valve 50 described above may be designed to be concealed by the handle 60.

Figure 3 is an exploded perspective view of the electric oil core skillet 200 according to another embodiment of the present invention, Figure 4 is a line IV of the electric oil core skillet 200 combined with the inner shell 10 and the outer shell 20 -Sectional view taken along IV.

In FIG. 3, a part of the endothelium 10 is cut for convenience of explanation, and the layer structure thereof is illustrated. Reference may be made to the foregoing disclosure as long as there is no contradiction with respect to the constituent members of these figures having the same reference numerals as the constituent members shown in FIGS. 1 and 2.

3 and 4, the oil core skillet 200 further adds an insulating member 70 between the electric heater 30 and the inner surface 10A of the endothelial 10 opposite the electric heater 30. It may include. In some embodiments, some or all of the heat insulating member 70 may have a pattern in which the shape of the electric heater 30 is projected.

The thermal insulation member 70 may be any suitable material having a thermal conductivity lower than that of the heat transfer medium 40. For example, the heat insulating member 70 may be a combination such as glass, ceramic, metal material or mixtures thereof, which are exemplary only and the present invention is not limited thereto. In addition, the heat insulating member 70 may have a layer structure, as shown in FIG. 3. The layer structure may be attached to the bottom surface of the inner surface 10A of the endothelium 10. If necessary, such layer structure may have a single layer or a laminated structure of two or more.

Since the heat insulating member 70 is disposed above the electric heater 30 along the shape of the electric heater 30, the inner surface 10A of the endothelial 10 is not directly exposed to the electric heater 30. The heat insulating member 70 restricts the heat transfer of the electric heater 30 directly to the upper side, so that heat transfer in the horizontal direction along the endothelial bottom surface is smoothly performed. Therefore, according to the embodiment of the present invention, the heat transfer is uniformly made to the entire bottom surface of the endothelium 10 can be cooked well.

In addition, according to the present embodiment, since the heat amount of the electric heater 30 is not directly transferred upward by the heat insulating member 70, the heat heater 30 is closest to the electric heater 30 among the inner surfaces 10A of the endothelium 10. Local damage to the exposed portion is suppressed. Such thermal damage may generally cause discoloration of the endothelium 10 to the extent that it is visually observed on the outer surface 10B of the endothelium 10. In this case, a discoloration pattern along the shape of the electric heater 30 may be observed on the outer surface 10B of the endothelium 10. However, when the heat insulating member 70 is applied, this discoloration pattern can be suppressed or reduced during use or during product life.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, it is possible that various substitutions, modifications and changes within the scope without departing from the technical spirit of the present invention, it is common in the art It will be apparent to those who have knowledge.

Claims

An electric oil core skilllet comprising a heat transfer medium filled in a double partition structure of an inner skin and an outer skin and an electric heater for heating the heat transfer medium,
The inner surface center of the bottom surface of the outer shell protrudes upwardly to be brought into contact with the inner surface center of the bottom surface of the inner shell, and the edge portion of the outer skin and the edge portion of the inner skin contact each other to seal the heat transfer medium.
And the electric heater is disposed on an inner surface of the bottom surface around an inner surface center of the upwardly projecting inner surface of the shell.

The method of claim 1,
The coupling between the inner surface center of the shell and the inner surface center of the shell is accomplished by spot welding from the outer surface center of the shell to the inner surface center of the shell. Let.

The method of claim 1,
And a liner for welding on the central portion of the outer surface of the shell.

The method of claim 1,
The outer surface of the bottom surface of the endothelial electric oil core skillet, characterized in that the flat.

The method of claim 1,
And an insulating member is disposed between the electric heater and the inner surface of the endothelial facing the electric heater.

The method of claim 5, wherein
Part or whole of the said heat insulation member has an electric oil core skillet which has the pattern which projected the shape of the said electric heater.

The method of claim 5, wherein
The insulating member is an electric oil core skillet, characterized in that the glass, ceramic, metal ash or a combination thereof.

The method of claim 5, wherein
And the insulating member is attached on the inner surface of the endothelial.

The method of claim 1,
The edge portion of the shell and the edge portion of the inner shell of the electric oil core skillet, characterized in that coupled by curling bonding.

The method of claim 1,
The heat transfer medium is an electric oil core skillet, characterized in that the air, water or heat medium oil filled to surround the electric heater.