KR200338458Y1 - electric heating element - Google Patents

Abstract

The present invention relates to an electric heating element, and is printed on the upper surface of the support made of silicone rubber, and bonded to the heating portion made of a mixture containing silver powder, the insulating layer attached thereon. In addition, the insulating layer is characterized in that the non-woven form retaining layer is fused on the inner and lower sides thereof, and optionally a mounting pad of Teflon material is attached to the insulating layer. According to the present invention, for example, by applying electricity to the bottom surface of a frying pan, a pot, etc., a high efficiency heat generating effect can be obtained, and the disconnection of the heat generating part can be prevented. When directly used as a cooking utensil, it is possible to obtain effects such as preventing food from sticking to the upper side.

Description

Electric heating element

The present invention relates to an electric heating element, and more particularly, a heating unit made of a mixture containing silver powder is coated and bonded in a zigzag form between a support and an insulating layer made of silicon rubber, and an upper surface of the insulating layer is selectively made of Teflon material. The present invention relates to an electric heating element that improves heat conductivity by attaching a mounting pad and prevents sticking of foods placed on the top.

In general, an electric heating element is a device that generates electricity by passing electricity through a conductor to heat the conductor itself according to its resistance value, and is mainly divided into a heating appliance such as an electric mat and a cooking appliance such as a burner.

At this time, the conductor, which is the heating part, is generally composed of a metal such as nickel or copper, which has high heat generation, but it has a high risk of a safety accident such as a fire in case of overheating due to excessive use time or sudden overload, especially in children or the elderly. For users with low coping skills, the risk can be doubled.

In addition, in case of nickel or copper, a change in physical properties of the heating element itself occurs due to a sudden decrease in power efficiency, resulting in a large amount of electricity consumption, and a large amount of electromagnetic waves is generated due to electricity generation during use. There was a problem such as adversely affecting the user.

On the other hand, when cooking food often in the open air there is a risk of fire and safety accidents, such as using a flammable material such as gas, not only easy to carry, but also has a disadvantage that the gas is low consumption efficiency and the maintenance cost increases.

In general, the heating device should be able to maintain an appropriate temperature, have a strong adaptation to temperature changes, and ensure the safety to prevent burns, fire and electric shocks during use. In addition, it is desirable to minimize the generation of electromagnetic waves harmful to the human body while allowing the generated heat to spread evenly.

In addition, the heat generating unit is preferably selected from metals having high efficiency of converting electrical energy into thermal energy and high heat generating efficiency in order to reduce current consumption.

In general, all heating elements (conductors) generate Joule heat proportional to the square of the current value and resistance value of the heating elements (conductors) when steady current flows for a certain period of time (called Joule's law).

Therefore, the present invention is to solve the problems inherent in such a conventional heating element, by inserting a heat generating part made of silver material with little change in physical properties into the support and the insulator to obtain a high-efficiency heating effect and at the same time fire It is possible to prevent, the support is made of silicone rubber to minimize the generation of electromagnetic waves, the upper side of the selectively installed a pad of Teflon material so that when the food is cooked directly on it so that the food is not pressed. The object is to provide an electric heating element.

Another object of the present invention is to provide a portable cooking utensil to which the heating element is attached to enable easy cooking and keeping warm.

The electric heating element of the present invention for achieving the above object is disposed between the support and the insulating layer of the silicone rubber, the thin heating portion made of a mixture containing silver powder is coated and bonded in a zigzag form to generate heat when the power is applied, Teflon mounting pads are attached to the upper surface of the insulating layer to prevent the adhesion of heat when the food is placed, and the insulating layer has a lower inner surface to prevent breakage and expansion of the support and the insulating layer itself. It is characterized in that the shape retaining layer made of a nonwoven fabric having a thin thickness is integrally fused.

In addition, the cooking utensil of the present invention is characterized in that the heating element is attached to a predetermined portion in a state where the mounting pad is removed.

1 is a perspective view showing a heating element of the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

Figure 3 is an exploded perspective view showing the structure of the heating element of the present invention.

Figure 4 is an illustration of a cooking utensil attached to the heating element of the present invention.

Explanation of symbols on the main parts of the drawings

One ; Support 2; Insulation layer

3; Morphology maintenance layer 4; Mounting pad

5; Heat generating portion 6; Connector

7; frying pan

Hereinafter, described in detail with reference to the accompanying drawings an embodiment of the electric heating element according to the present invention.

1 is a perspective view showing a heating element of the present invention, Figure 2 is a cross-sectional view taken along line A-A of Figure 1, Figure 3 is an exploded perspective view showing the structure of the heating element of the present invention.

As shown in Figures 1 to 3, the electric heating element of the present invention is excellent in heat resistance and insulation, and produced a support 1 of a predetermined size made of a silicon rubber material with extremely low electromagnetic wave generation, Insulating layer (2) made of the same material on the upper side is a structure that is firmly attached through a separate adhesive or the like.

In addition, between the support 1 and the insulator 2 (the upper surface of the support 1), a heat generating portion 5 made of a mixture containing silver powder is zigzag on the upper surface of the support 1 so as to generate heat by an external power source. The coating is bonded in the form, both ends of the heat generating portion 5 is attached to the connecting terminal 6 of the form stacked on the coating so as to be connected to the external power source.

In this case, the connection terminal 6 is coupled to both ends of the heat generating portion 5 printed on the support 1 to prevent disconnection of the heat generating portion 5 by crimping and soldering, or a separate insulating layer thereon. (Omitted) is preferably manufactured in the form of a cover.

In addition, an end portion of the connection terminal 6 is preferably provided with an adapter (not shown) that uses a weak current of 220 V to reduce power consumption, and a rechargeable battery connection part (not shown) for use outdoors.

At this time, the heat generating portion 5 is formed of silver, the heat and electrical conductivity of the silver has a thermal conductivity of 1.006cal / cm · deg (18 ℃), resistivity 1.62 × 10 ^-6 Ω · cm (18 ℃) This is because it is an excellent material.

In particular, silver is a material suitable for use as the heat generating part 5 because the resistance value as the heating element itself is high heat generation effect, not well oxidized, has a strong heat and strength properties, and the resistance value with temperature changes little.

On the other hand, the inner surface of the insulating layer 2 is formed of a nonwoven fabric or the like to prevent the heat generating part 5 from being cut or disconnected due to the bending of the insulating layer 2 due to the elasticity of the silicone rubber. ) Is integrally attached.

The nonwoven fabric is a material widely used as a coating material, and has fibers intertwined with no lateral and transverse directions, and no cut edges are unwound, and a silicone rubber material bonded to the insulating layer 2 as well as the insulating layer 2. The bending of the phosphorus support 1 also has the effect of preventing it at the same time.

In addition, on the upper side of the insulating layer 2, when the food is directly cooked for the purpose of cooking utensils (for example, grilling meat in the open air, etc.), the placed food is placed on the insulating layer 2 due to high heat. A mounting pad 4 made of a material such as Teflon is selectively attached to prevent sticking and to prevent slipping.

The Teflon is also called a fluororesin, and has excellent thermal and chemical properties. In particular, Teflon is a material having excellent electrical insulation and flexibility and high safety, and can be used at both low temperature and high temperature (about 1 ° C. to 300 ° C.).

On the other hand, the heating element configured as described above can be used for cooking purposes by mounting a frying pan, pot, etc. on the upper surface, and as shown in FIG. It can be attached integrally to the cooking utensils capable of heating and keeping warm according to the application of electricity.

Hereinafter, the manufacturing method of the electric heating element of the present invention is as follows.

The electric heating element of the present invention is provided with a support 1 by cutting silicon rubber into an appropriate size and thickness, and heat-generating by printing a mixture containing silver powder on the upper surface of the support 1 in a zigzag form to increase efficiency with respect to space. The part 5 is formed.

After that, both ends of the heat generating part 5 are covered with a connecting insulation layer 6 covered with a separate insulating layer (not shown) formed in a predetermined size so as to be connected to an external power source (adapter, rechargeable battery). On top of that, the form-retaining layer 3 of nonwoven fabric having a predetermined size smaller than the support 1 and the insulating layer 2 of silicone rubber are sequentially and firmly attached using a separate adhesive or the like.

Thereafter, the mounting pad 4 made of Teflon is attached to the insulating layer 2 to complete the electric heating element.

Although the present invention has been described with specific examples, the present invention is not limited thereto, and modifications and variations can be made without departing from the scope of the technical idea of the present invention.

That is, the support 1 and the insulating layer 2, etc. can be arbitrarily modified if necessary, such as the size and thickness can be used as cooking utensils and heating appliances for various purposes.

Further, after forming a groove (not shown) having a predetermined diameter and depth on the upper surface of the support 1, the insulating layer 2 by laminating and inserting the insulating layer 2 and the mounting pad 4 in the groove. ), The heat generating unit 5 and the mounting pad 4 may be manufactured to have a flat shape without being protruded by being inserted into the support 1.

As described above, according to the electric heating element according to the present invention, the heating element made of a mixture containing silver powder is bonded between the support made of silicon rubber and the insulator in a zigzag form, whereby a high efficiency heat generating effect can be obtained, as well as a fire. Effective in prevention, there is an advantage that can minimize the generation of electromagnetic waves.

In addition, the insulator is integrally fused with a nonwoven fabric shape retaining layer on the inner and lower sides to prevent bending of the support and the insulating layer, thereby preventing disconnection of the heat generating unit, and a mounting pad made of Teflon or the like on the top surface thereof. By attaching it to prevent food from sticking when cooking directly on it.

In addition, the heating element may be directly attached to the cooking utensils to conveniently insulate or heat food contained in the cooking utensils at home or outdoors.

Claims (2)

A thin heating part 5 made of a mixture containing silver powder is coated and bonded in a zigzag form to be disposed between the support 1 made of silicon rubber and the insulating layer 2 to generate heat when the power is applied. 2) Teflon mounting pad (4) is attached to the upper surface to prevent the adhesion of heat when the food is placed, the insulating layer (2) is the bending and expansion of the support (1) and the insulating layer (2) itself An electric heating element, characterized in that the shape-retaining layer (3) made of a nonwoven fabric having a thin thickness on the inner lower surface is integrally fused to prevent the disconnection of the heat generating unit (5). The cooking utensil of claim 1, wherein the heating element is attached to a predetermined portion in a state where the pad 4 is removed.