KR20170071222A - Electric cooker with plate heater - Google Patents

Electric cooker with plate heater Download PDF

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Publication number
KR20170071222A
KR20170071222A KR1020150179291A KR20150179291A KR20170071222A KR 20170071222 A KR20170071222 A KR 20170071222A KR 1020150179291 A KR1020150179291 A KR 1020150179291A KR 20150179291 A KR20150179291 A KR 20150179291A KR 20170071222 A KR20170071222 A KR 20170071222A
Authority
KR
South Korea
Prior art keywords
heating element
inner pot
planar heating
base
present
Prior art date
Application number
KR1020150179291A
Other languages
Korean (ko)
Inventor
김동원
최귀진
Original Assignee
주식회사 대유위니아
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 대유위니아 filed Critical 주식회사 대유위니아
Priority to KR1020150179291A priority Critical patent/KR20170071222A/en
Publication of KR20170071222A publication Critical patent/KR20170071222A/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/086—Pressure-cookers; Lids or locking devices specially adapted therefor with built-in heating means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater

Abstract

An aspect of the present invention relates to an electric cooker provided with a surface heating element, wherein the surface heating element is provided on a side surface of a base for heating an inner pot in the electric cooking appliance, According to the above-described configuration, it is possible to uniformly heat the entire inner pot at the time of cooking or keeping warm, and to minimize heat (thermal insulation) deviation during heating of the inner pot. have.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric cooker,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric cooker provided with a surface heating element capable of uniformly heating the inner pot during cooking or keeping warm and minimizing heat (thermal insulation) variation during heating of the inner pot.

In general, an electric rice cooker is an electric cooking device used for building or storing rice, and since it uses electricity that is convenient to control automatically, there is no need to adjust the firepower, and thus it is widely used in various countries including rice.

When you look at the operation principle of the rice cooker, the heating element is installed on the bottom or the body of the pot. When water and rice are put into the inside of the pot and heated, the water evaporates as time passes and becomes rice.

Such electric cooking apparatus is disclosed in Korean Patent No. 0514926 ('Cooking Apparatus', September 9, 2005). According to the publication, the planar heating elements are included in the upper plate, the lower plate, the rear plate, and both side plates of the inner case.

However, the cooking apparatus including the planar heating element according to the above publication is disadvantageous in that the planar heating element is included on all the surfaces of the cooking appliance, resulting in an increase in production cost and a decrease in production efficiency.

Therefore, it is necessary to develop a technology capable of efficiently arranging an area heating element in a cooking appliance, optimizing the heat transfer of the inner pot, lowering the manufacturing cost, and increasing the productivity.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide an electric cooker which can uniformly heat the entire inner pot during cooking or keeping warm and is provided with a surface heating element capable of minimizing heat The purpose is to provide.

The present invention relates to an electric cooker provided with a surface heating element, wherein the surface heating element is provided on a side surface of a base for heating an inner pot in the electric cooking pot, and is divided into multiple stages along the height direction of the inner pot An electric cooker provided with a heating element is provided.

According to the present invention, there is provided an electric cooker provided with a planar heating element, wherein the planar heating elements are provided at different densities.

In the present invention, the planar heating element may include a first planar heating element disposed to correspond to a position from an upper end of the inner pot, and a second planar heating element disposed to correspond from a lower portion of the first planar heating element to a lower end of the inner pot The present invention provides an electric cooker provided with a planar heating element.

In the present invention, the first planar heating element is arranged to correspond to a position where the temperature deviation from the lower portion of the inner pot is higher than a predetermined reference when the inner pot is heated.

In the present invention, the first surface heat emission element is disposed at an interval from the upper end of the base, and the second surface heat emission element is disposed except for the curved surface at the lower end edge of the base Provides an electric cooker.

According to the present invention, there is provided an electric cooker provided with a planar heating element, wherein the density of the second planar heating element is higher than the density of the first planar heating element.

According to the electric cooking machine equipped with the surface heating element of the present invention, the following effects can be obtained.

The surface heating elements are divided into multiple stages along the height direction of the inner pot, and in particular, the density of each surface heating element is different, so that uniform heating can be performed throughout the inner pot at the time of cooking or keeping warm, Can be minimized.

Therefore, by arranging a plurality of surface heating elements to optimize the heat transfer in the inner pot, the manufacturing cost of the inner pot can be reduced and the productivity can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a planar heating element according to an embodiment of the present invention; FIG.
Fig. 3 schematically shows only the planar heating element and the inner pot in order to explain the positional relationship between the inner pot and the planar heating element placed in the base of Fig. 1; Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

The electric cooker equipped with the planar heating element according to the present invention may be a cooker for cooking using electricity such as an electric rice cooker, an electric pressure cooker, and an electric oven.

The detailed structure of the electric pressure cooker will be described with reference to FIGS. 1 and 2 as an example of the electric cooker provided with the surface heating element according to the present invention.

(Not shown) formed with an open top surface, an lid (not shown) hingedly coupled to the main body so as to cover the opened upper surface of the main body, A base 100 installed in the space and having a top surface opened to heat the inner pot 300 and an inner pot 300 which is seated in the base 100 and is detachable. On the front surface of the main body portion, a control panel is provided which is provided with a display portion for displaying the operation state of the electromagnetic cooker, various operation buttons, operation switches, and the like.

The planar heating element according to the present invention may be fixed to the ring-shaped cases 150 and 170 mounted on the inner surface of the base 100 in the main body for heating the side surface of the inner pot 300. [ An induction heating (IH) coil (not shown) is provided outside the portions corresponding to the curved portion 330 and the floor surface 310 of the base 100 to heat the curved portion 330 and the floor surface 310 of the inner pot 300, (110) may be provided.

The ring-shaped cases 150 and 170 are mounted on the inner surface of the base 100 in the form of a ring, and protrusions 151 protruding outward are formed around the upper and lower ends of the ring-shaped cases 150 and 170, respectively. The cross-section of the projections 151 and 171 is a circular shape having a hollow.

The surface heating elements are fixed to the outer surfaces of the ring-shaped cases (150, 170). That is, the ring-shaped cases 150 and 170 are disposed between the protrusions 151 and 171 protruding outward at the lower end.

The ring-shaped cases 150 and 170, to which the surface heating elements are fixed on the outer surface, are fixed to the inner surface of the base 100. Accordingly, the planar heating element is disposed between the inner side surface of the base 100 and the outer side surfaces of the ring-shaped cases 150 and 170.

3 is a schematic view illustrating a position where the planar heating element is provided when the planar heating element according to a preferred embodiment of the present invention is provided on the inner surface of the base 100. FIG.

3, only the planar heating element and the inner pot 300 are schematically shown in order to explain the positional relationship between the inner pot 300 and the planar heating element placed in the base 100. FIG. In particular, it should be noted that the planar heating element shown in FIG. 3 is attached to the ring-shaped cases 150 and 170 fixed to the base 100 and not to the outer surface of the inner pot 300.

3, the inner pot 300 includes a bottom surface 310 having a cylindrical shape with an open top and a peripheral portion 350 extending vertically along the bottom surface 310. And the height of the peripheral portion 350 is H with respect to the bottom surface 310.

At this time, the portion where the bottom surface 310 and the circumferential portion 350 are in contact with each other is formed of a curved surface portion 330 having a curvature radius r.

The planar heating element is divided into a plurality of stages 210 and 230 along the height H direction of the inner pot 300 according to the present invention. It is. That is, the planar heating element is composed of a plurality of (210, 230) along the height (H) direction of the inner pot 300.

In the present embodiment, as shown in Fig. 3, the planar heating element is composed of a first planar heating element 210 and a second planar heating element 230.

The first surface heating element 210 is arranged to correspond to a position from the upper end of the inner pot 300 and the second surface heating element 230 corresponds to the lower end of the inner pot 300 .

The position where the first surface heating element 210 is disposed is preferably such that the temperature deviation from the lower portion of the inner pot 300 is greater than a predetermined reference when the inner pot 300 is heated.

At this time, it is preferable that the first surface heat emission elements 210 are arranged at a certain distance L from the upper end of the base 100.

Although the inner pot 300 is not illustrated in FIG. 3 of the present invention, a handle may be provided to protrude outward along the upper periphery of the inner pot 300 so that the inner pot 300 can be easily lifted by hand , So that it is preferable not to dispose the surface heating element in the portion where the handle is provided when the handle is provided.

That is, the first surface heat emission element 210 can be disposed at a distance L from the upper end of the base 100 corresponding to the handle portion by the portion of the inner pot 300 where the handle is provided.

It is preferable that the second surface heat emission element 230 is arranged to correspond from the lower portion of the first surface heat emission element 210 to the lower end of the inner pot 300 and except the curved surface of the lower end edge of the base 100. That is, since the inner pot 300 has the curved surface portion 330 at the lower edge, the lower edge of the base 100 is also curved to correspond to the curved surface portion 330, Is provided except for the curved surface of the lower edge of the base 100. [

2, the first and second surface heat emission elements 210 and 230 may be fixed to the outer surfaces of the ring-shaped cases 150 and 170, The first planar heating element 210 and the second planar heating element 230 are fixed between the protrusions 151 and 171 projecting outward on the ring-shaped cases 150 and 170 as shown in FIG.

The ring-shaped cases 150 and 170 are fixed to the inner surface of the base 100 with the first and second surface heating elements 210 and 230 fixed to the upper and lower surfaces, respectively. Accordingly, the first and second surface heat emission elements 210 and 230 are disposed between the inner surface of the base 100 and the outer surfaces of the ring-shaped cases 150 and 170, respectively.

It is preferable that the densities of the surface heat emission elements 210 and 230 divided into the multi-stages are different from each other in terms of minimizing thermal drift.

In this embodiment, the density of the second surface heat emission element 230 is higher than the density of the first surface heat emission element 210.

Each of the surface heat emission elements 210 and 230 may be formed of a conductive material such as carbon or copper. Although not shown in the drawings, electrode terminals are connected to the surface heat emission elements 210 and 230 so that power is applied to the surface heat emission elements 210 and 230 to generate heat.

In the electric cooker provided with the surface heating element according to the present invention, the surface heating element is divided into multiple stages along the height direction of the inner pot, and in particular, the density of each surface heating element is different, And it is possible to minimize the heat (thermal insulation) deviation when the inner pot is heated.

Therefore, a plurality of planar heating elements are disposed in the inner pot 300 so as to optimize heat transfer, so that the manufacturing cost of the inner pot 300 can be reduced and productivity can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

100: Base
210: a first surface heating element
230: Second surface heating element
300: inner pot
310: bottom surface
330:
350: circumference

Claims (6)

An electric cooker provided with an area heating element,
The planar heating element,
Characterized in that the surface heating element is provided on a side surface of a base for heating an inner pot in the electric cooking utensil and is divided into multiple stages along the height direction of the inner pot. The method according to claim 1,
Wherein the flat heating elements divided into the plurality of stages have different densities. The method according to claim 1,
The planar heating element,
A first planar heating element arranged so as to correspond to a position from an upper end of the inner pot,
And a second planar heating element disposed so as to correspond to the lower end of the inner pot from the lower portion of the first planar heating element. The method of claim 3,
The first planar heating element
Wherein the inner pot is disposed so as to correspond to a position where the temperature deviation from the lower portion of the inner pot is greater than a predetermined reference value when the inner pot is heated. The method according to claim 3 or 4,
The first planar heating element
And spaced from the top of the base,
The second planar heating element
Wherein the curved surface of the bottom edge of the base is not disposed. The method according to claim 3 or 4,
And the density of the second area heating element is higher than the density of the first area heating element.
KR1020150179291A 2015-12-15 2015-12-15 Electric cooker with plate heater KR20170071222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150179291A KR20170071222A (en) 2015-12-15 2015-12-15 Electric cooker with plate heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150179291A KR20170071222A (en) 2015-12-15 2015-12-15 Electric cooker with plate heater

Publications (1)

Publication Number Publication Date
KR20170071222A true KR20170071222A (en) 2017-06-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150179291A KR20170071222A (en) 2015-12-15 2015-12-15 Electric cooker with plate heater

Country Status (1)

Country Link
KR (1) KR20170071222A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190006288A (en) * 2017-07-10 2019-01-18 아바윈주식회사 Planar heat element for electric cooking device
KR20210136693A (en) * 2020-05-08 2021-11-17 와이즈 브라더스 주식회사 Rotary type cooker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190006288A (en) * 2017-07-10 2019-01-18 아바윈주식회사 Planar heat element for electric cooking device
KR20210136693A (en) * 2020-05-08 2021-11-17 와이즈 브라더스 주식회사 Rotary type cooker

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