KR20160126625A - Electric cooker - Google Patents

Abstract

The present invention relates to an electric rice cooker which brings reduction in energy, uniform heat transmission, and an increase in energy efficiency, by replacing linear heater used as a heating unit in the electric rice cooker with a sheet-like heating element.

Description

ELECTRIC COOKER

The present invention relates to an electromagnetic cooker capable of achieving uniform heat transfer, improvement in consumption efficiency, and energy saving by replacing a linear heater as a heating means of an electromagnetic cooker with a surface heating element.

Generally, an electric rice cooker is a type of household appliances that uses electric energy to heat food to be cooked and produce food in a form that can be consumed. Typically, the rice cooker functions to generate rice in the form of a cookable rice.

At this time, the rice cooker is constructed so that rice is produced by inserting a heating element using electricity and heating the rice and water by heating.

1, the rice cooker includes an oven 1 for uniformly delivering heat to uniformly cook rice, an oven lid 2 for opening and closing the oven 1, rice to be cooked, An upper heater 5 for removing heat and dew that is formed on the water, a side heater 8 for heating the front of the rice cooker, and a heater for heating the rice and water together with the upper and side heaters, A bottom surface heater 7 used for adjusting the required thermal power and time, and a bottom surface temperature sensor 6 for controlling the bottom surface heater 7.

A sheath heater, which is a heater used in a conventional rice cooker, is a tubular heater in which a heating wire is embedded in a metal protecting tube as a base of an electric heating heater, a magnesium oxide as an insulating powder is charged, and the heating wire and the protecting pipe are insulated.

The heating means used in such a conventional rice cooker is a nickel-based linear heater, and the generated heat is locally transmitted to the inner pot, so that the cooking can not be uniformly heated.

At this time, the cooker can be heated by heating only a specific part of the heater. In particular, when the cooked rice is cooked rice, there are many side effects of burning rice.

If the heater is raised to the desired temperature and then stopped, the heat will be cooled again in a few seconds. To prevent this, a thick insulation is required in the heater.

The energy consumption efficiency is low because the amount of heat outputted to the heater is low.

Patent Registration No. 0152806

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a heating device for a rice cooker, in which a linear heater as a heating means is replaced by a surface heating element to uniformly transmit heat to the inner pot, It has its purpose.

In order to achieve the above object, there is provided an electromagnetic rice cooker according to claim 1 of the present invention, comprising: an inner pot; a main body having a housing portion for housing the inner pot; and a lid for opening and closing the main body, An area heating element is provided.

In the electromagnetic cooker according to claim 2 of the present invention, the planar heating element is provided on a side surface of the accommodating portion, and a heater is provided on a lower surface of the accommodating portion.

In the electromagnetic rice cooker according to claim 3 of the present invention, an area heating element is further provided below the lid.

In the electromagnetic cooker according to claim 4 of the present invention, the planar heating element is a carbon surface heating element.

According to the electromagnetic cooker of the present invention as described above, the following effects can be obtained.

The planar heating elements can uniformly transfer heat to a predetermined area, increase the heat transfer amount per unit area as compared with the linear heater, and improve the energy consumption efficiency due to the low current density.

Carbon surface heating elements using carbon nanotubes and graphite can achieve far-infrared heating through the self-heating of carbon components. Graphite is advantageous for human body because it is durable, strong against heat, and generates little electromagnetic waves.

Even if the surface heating element is raised to the desired temperature and then the operation is stopped, the surface temperature of the surface heating element slowly drops due to the nature of the carbon material. Therefore, unlike ordinary rice cookers which are equipped with only a linear heater, it is not necessary to install additional heat insulating material or only a small amount of heat insulating material is required, and thus, the cost saving, process reduction, and volume reduction of the rice cooker are reduced have.

1 is a sectional view of a conventional electric rice cooker provided with a linear heater.
2 is a sectional view of a first embodiment of the present invention;

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the scope of the present invention is not limited by the following examples.

For reference, the same components as those of the prior art of the present invention will be described with reference to the above-mentioned prior arts, and a detailed description thereof will be omitted.

1st Example

2, an electromagnetic cooker 100 according to a preferred embodiment of the present invention includes an inner pot 210 for accommodating a food and a main body 210 having an accommodating portion 220 for receiving the inner pot 210 A lid 300 for opening and closing the main body 200 and a lid 300 for opening and closing the inner pot 210 and a planar heating element 400 ).

The planar heating elements 400 and 500 may be made of a thin metal plate, a heating paint, carbon fiber, or the like.

In the present invention, it is preferable to use a carbon surface heating element (see Publication No. 10-2015-0019467) which is a surface heating element 400 (500) using carbon nanotubes and graphite.

The surface temperature of the surface heating elements 400 and 500 slowly drops due to the characteristic of the carbon material even if the carbon surface heating elements are raised to a desired temperature and then stopped. Therefore, unlike a conventional electromagnetic cooker 100 equipped with only a linear heater, it is not necessary to install additional heat insulating material, or only a small amount of heat insulating material is required, so that it is possible to save the unit cost, reduce the process and reduce the volume of the rice cooker It is effective.

Also, the surface heat emission elements 400 and 500 have an increased heat transfer amount per unit area and a low current density, thereby improving energy consumption efficiency.

At this time, the carbon surface heating element can achieve far-infrared heating through the self-heating of the carbon component, and graphite is beneficial to the human body because it has good durability, heat resistance and little electromagnetic waves.

A planar heating element 400 is provided on a side surface of the accommodating part 220 and a linear heater 212 is provided on a lower surface of the accommodating part 220.

A planar heating element 500 is further provided on the lower side of the lid 300.

Second Example

The planar heating element 400 is provided instead of the heater 212 on the bottom surface of the receiving part 220 of the first embodiment and the remaining structure is the same as that of the first embodiment.

Third Example

A linear heater 212 is provided instead of the planar heating element 400 on the side of the accommodating portion 220 of the first embodiment and a planar heating element 400 is provided on the lower surface of the accommodating portion 220 instead of the heater 212 , And the remaining structure is the same as that of the first embodiment.

Since the surface heaters 400 and 500 transmit uniform heat to the installed area, the heaters 212 are superior in thermal insulation performance to those using the heaters 212, The examples are most preferable among the embodiments described above.

According to this embodiment of the present invention, the receiving portion 220 is formed in the inner space of the main body 200, and the inner pot 210 is accommodated in the receiving portion 220.

A surface heating element 400 is installed on the lower side of the lid 300 and a side surface or a lower surface of the receiving portion 220 and a heater 212 is provided on the lower surface of the receiving portion 220.

Therefore, the electromagnetic cooker 100 of the present invention can efficiently heat the food stored in the inner pot 210 while saving energy.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be apparent to those skilled in the art.

** Explanation of symbols **
100: rice cooker 200: main body
210: inner pot 212: heater
220: receptacle 300: lid
310: Insulating cover 400: Surface heating element (receiving part)
500: Surface heating element (lid)

Claims (4)

Inner pot;
A main body having an accommodating portion for accommodating the inner pot;
And a lid for opening and closing the main body,
Wherein the surface heating element is provided at least on a lower surface or a side surface of the accommodation portion. The method according to claim 1,
The planar heating element is provided on a side surface of the accommodating portion,
And a heater is provided on a lower surface of the receiving portion. The method according to claim 1 or 2,
And an area heating element is further provided on the lower side of the lid. The method according to claim 1 or 2,
Wherein the planar heating element is a carbon surface heating element.

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