JPH07312280A - Electric cooking heater - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an electric cooking heater capable of displaying the energization state and heating range of an electromagnetic induction heating unit with a simple configuration. [Structure] In an electric cooking heater in which an electromagnetic induction heating unit 3 is provided in a main body, and a flat plate 5 made of crystallized glass or the like that transmits light is arranged on the upper surface of the electromagnetic induction heating unit 3, the electromagnetic induction heating unit 3 is A plurality of heat-resistant and heat-insulating adiabatic light guides 7 are provided around the outer circumference of the induction heating coil 6 to be formed.
An electric cooking heater provided with a light emitting diode 8 surrounded by the adiabatic light guide tube 7. The light emitting diode 8 is arranged below the induction heating coil 6 so that it is energized and emits light simultaneously with the induction heating coil 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric cooking heater having an electromagnetic induction heating section and a flat plate.

[0002]

2. Description of the Related Art Conventionally, electromagnetic induction heating cookers are safer than gas cookers, and thus the demand is increasing year by year. However, the heating part of the electromagnetic induction heating cooker applies a high-frequency current to the induction heating coil, generates a high-frequency magnetic field, and causes an eddy current to flow in the pan itself as a load that is magnetically coupled to the induction heating coil, resulting in Joule heat. Since the pot itself generates heat, a light emitting diode or the like provided on the operation panel has been used as a means for indicating the heating temperature and the heating power thereof, as shown in JP-A-5-47463.

Further, an electric cooking heater provided with an electromagnetic induction heating section and a transparent flat plate is disclosed in Japanese Patent Laid-Open No. Hei.
As shown in Japanese Patent Publication No. 114182, etc., a light emitting means is provided at a position lower than the flat plate and higher than the induction heating coil to display the heated portion in a manner similar to that of a gas cooker or an electric heater, and further, the brightness depends on the output. For example, a light emitting means for changing the temperature is provided so that the strength of the heating output can be visually recognized.

Further, in a cooking device provided with a heat source such as a halogen lamp and a translucent flat plate without an electromagnetic induction heating unit, as shown in Japanese Patent Laid-Open No. 4-64820, the central portion of the heating area is There is a lamp house whose lower surface is covered with a heat insulating material and a luminous body provided in the lamp house constitutes a residual heat display portion.

[0005]

In the electromagnetic induction heating cooker in which the conventional means for indicating the heating temperature and the heating power is provided on the operation panel, there is a problem that the heating state of the upper surface of the flat plate is difficult to understand. In addition, in the electric cooking heater that displays the heating portion of the flat plate, the heating state is somewhat easy to understand, but since the light emitting means is provided at a position higher than the induction heating coil, heat resistance is a problem when using a light emitting diode or the like. Met.

In addition, a lamp house covered with a heat insulating material to protect the light emitting body from heat has a problem that the heating state of the upper surface of the flat plate is difficult to understand, and is not capable of electromagnetic induction heating.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is provided with an electromagnetic induction heating section in the main body, and crystallized glass that transmits light to the upper surface of the electromagnetic induction heating section. In an electric cooking heater in which a flat plate composed of etc. is arranged, a plurality of heat-resistant and heat-insulating heat-insulating light guide tubes and light-emitting diodes surrounded by the heat-insulating light guide tubes are provided on the outer circumference of the induction heating coil that constitutes the electromagnetic induction heating section. The light emitting diode is arranged below the induction heating coil and is energized at the same time as the induction heating coil to emit light.

[0008]

With the above construction, when the induction heating coil is energized, the light emitting diode is energized to emit light, and the light is guided by the heat insulating light guide and transmitted to the upper surface of the flat plate on the outer periphery of the induction heating coil to display energization. , Acts to clarify the heating part. In addition, the light emitting diode arranged below the induction heating coil is insulated from the heat from the flat plate or the induction heating coil by the heat insulating optical tube.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view of an electric cooking heater according to an embodiment of the present invention, and FIG. 2 is a partial cross-sectional view of the electromagnetic induction heating section.

In FIG. 1, reference numeral 1 is a main body of an electric cooking heater, 2, 3, and 4 are heating parts provided on the upper part of the main body 1 and made of various heat sources. In the present embodiment, 2 is a halogen heater. Part, 3 is an electromagnetic induction heating part,
4 is a radiant heater part. Reference numeral 5 denotes a flat plate made of crystallized glass having heat resistance and light transmittance, and covers the upper surfaces of the heating units 2, 3 and 4. The above constitutes a so-called smooth stop heater.

In FIG. 2, the electromagnetic induction heating section 3 includes an induction heating coil 6, a plurality of heat-resistant and heat-insulating heat-insulating optical tubes 7 provided in an annular shape on the outer circumference of the induction heating coil 6, and the heat-insulating optical tube 7. It is composed of a light emitting diode 8 surrounded and a control unit (not shown) thereof. The light emitting diode (8) is arranged below the induction heating coil (6).

Reference numeral 9 denotes an electromagnetic induction display portion which can be seen on the upper surface of the flat plate 5 on the electromagnetic induction heating portion 3 when the light emitting diode 8 emits light, and 10 is placed on the upper surface of the flat plate 5 on the electromagnetic induction heating portion 3. It is a pot as a load.

Next, the operation of the above configuration will be described. The pan 10 is placed on the upper surface of the flat plate 5 on the electromagnetic induction heating unit 3, and the induction heating coil 6 is controlled by a control unit (not shown).
When electricity is applied to the light emitting diode to heat it, the light emitting diode 8 is energized to emit light.

When the light emitting diode 8 emits light, the light is guided to the adiabatic light guide tube 7 and the electromagnetic induction energization display section 9 around the induction heating coil 6 shines through the flat plate 5, so that the energized state and the electromagnetic induction heating section 3 are clearly defined. , So you can cook with a feeling similar to a gas cooker or electric heater.

Further, the light emitting diode 8 is arranged below the induction heating coil 6, and the heat from the flat plate 5 and the induction heating coil 6 is insulated by the heat insulating optical tube 7. No problem occurs.

[0016]

According to the present invention, a plurality of heat-resistant and heat-insulating adiabatic light guides and a light-emitting diode surrounded by the heat-insulating light guides are provided on the outer circumference of the induction heating coil forming the electromagnetic induction heating section. Since the light emitting diode is placed below the induction heating coil, the energization state and electromagnetic induction heating part can be clarified on the flat plate upper surface with a very simple structure, and the heat resistance problem of the light emitting diode can be solved, so it is possible to You can cook with a feeling similar to an electric heater,
Its practical effect is extremely large.

[Brief description of drawings]

FIG. 1 is an external perspective view of an electric cooking heater showing an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of the same electromagnetic induction heating unit.

[Explanation of symbols]

 1 main body 3 electromagnetic induction heating section 5 flat plate 6 induction heating coil 7 adiabatic light guide tube 8 light emitting diode

Claims (1)

[Claims] 1. A main body (1) is provided with an electromagnetic induction heating section (3), and a flat plate (5) made of crystallized glass or the like which transmits light is arranged on the upper surface of the electromagnetic induction heating section (3). In the electric cooking heater described above, a plurality of heat-resistant and heat-insulating adiabatic light guide tubes (7) are surrounded by the heat-insulating light guide tube (7) around the outer periphery of the induction heating coil (6) that constitutes the electromagnetic induction heating section (3). A light emitting diode (8) is provided, the light emitting diode (8) is disposed below the induction heating coil (6), and is energized and emits light simultaneously with the induction heating coil (6). Electric cooking heater.