CN110811295B

CN110811295B - Electric cooking appliance

Info

Publication number: CN110811295B
Application number: CN201910720808.XA
Authority: CN
Inventors: 李昌龙; 孙贤汎
Original assignee: Cuckoo Electronics Co Ltd
Current assignee: Cuckoo Holdings Co Ltd
Priority date: 2018-08-09
Filing date: 2019-08-06
Publication date: 2022-06-14
Anticipated expiration: 2039-08-06
Also published as: CN110811295A

Abstract

The present invention relates to an electric cooker. In order to reduce the starch content of the cooking object and improve the production efficiency by a simple structure when cooking, the invention provides an electric cooking appliance, which comprises: an inner container, which forms a containing space inside; a separation plate which is detachably attached to the inner container so that the accommodating space is divided into an upper cooking area for accommodating the cooking object and a lower water storage area for storing heated water, wherein a siphon tube for heating water immersed in the water storage area is arranged at the lower surface of the separation plate; and a separation plate gasket installed at an edge of the separation plate to seal a space between the separation plate and the inner container such that when the inner container is heated, steam pressure of the water storage region is increased and the heated water rises along the siphon tube.

Description

Electric cooking appliance

Technical Field

The present invention relates to an electric cooking appliance, and more particularly, to an electric cooking appliance which reduces starch content of an object to be cooked and improves production efficiency with a simple structure during cooking.

Background

Generally, an electric cooker is an electric cooker, an electric pressure cooker, or the like used in shops and homes to cook food, and is composed of a main body having a heating part and a cover covering the upper part of the main body.

And, the inner container is arranged in the body, and when the washed rice is put into the inner container, the inner container is heated by the heating part, so that the cooking process can be performed.

In this case, a large amount of carbohydrates are stored in grains such as rice in the form of starch, and excessive absorption of such carbohydrates may induce various cardiovascular problems such as obesity and adult diseases such as diabetes.

Accordingly, electric cookers have been developed which separate starch so that cooking with a low starch content can be performed for the purpose of weight reduction and the like. In detail, the electric cooker is provided with an electronic valve at the lower part of an inner container for accommodating food, and after the inner container is filled with heated water and heated, the electronic valve is opened to discharge the heated water, thereby separating starch.

However, in the conventional electric cooker, an additional device such as an electronic valve is required to discharge heated water in which starch is eluted to the outside of the inner container. In addition, the above-mentioned electric cooker requires an additional water tank for collecting water discharged from the inner container, and thus has a problem in that the structure and assembly of parts are complicated and the production efficiency is lowered.

Further, the conventional electric cooker has a one-way flow in which water used for separating starch flows in from the outside of the inner container, passes through the inner container, and is discharged into the water tank. This not only increases the amount of water consumed during cooking, but also reduces the overall cooking quality, thereby reducing the satisfaction of consumers. Further, since consumers need to purchase new products for low starch cooking, there is a problem that the burden on consumers is increased.

Disclosure of Invention

In order to solve the above problems, the present invention provides an electric cooker which can reduce the starch content of the cooking object and improve the production efficiency with a simple structure during cooking.

In order to solve the above problems, the present invention provides an electric cooking appliance, comprising: an inner container, which forms a containing space inside; a separation plate which is detachably attached to the inner container so that the accommodating space is divided into an upper cooking area for accommodating the cooking object and a lower water storage area for storing heated water, and the lower part of the separation plate is provided with a siphon tube for heating water immersed in the water storage area; and a separation plate gasket installed at an edge of the separation plate to seal a space between the separation plate and the inner container such that when the inner container is heated, steam pressure of the water storage region is increased and the heated water rises along the siphon tube.

With the above solution, the present invention provides the following effects.

First, since the siphon tube is provided at one side of the separation plate dividing the inner tub into upper and lower portions, the starch of the cooking object can be separated by raising and lowering the heating water only by the change of the steam pressure due to the heating of the inner tub. Thus, a compact cooking device can be provided which can be used for weight reduction, dietetic therapy, etc. and which has a low starch content and does not require an additional water storage tank or a valve device.

Secondly, the separation plate covers the lower part of the cooking area and is arranged opposite to the water storage area, so that the steam heat of the water storage area heated at high temperature is transmitted to the cooking area through the whole area of the separation plate. Therefore, the heating efficiency of the product is improved, and the temperature of the heated water is increased, thereby improving the cooking quality of the product.

Thirdly, the siphon tube is supported on the bottom of the liner, the installation position of the separation plate is fixed, and the water storage area and the siphon tube can be communicated with each other through an arch hole formed on the side surface of the siphon tube. Therefore, the inner container can be easily applied to a common electric rice cooker, thereby improving the interchangeability of products and the production efficiency.

Fourthly, a locking part is convexly arranged in the inner container to guide the separating plate to be installed at a correct position. When the separation plate inserted into the inner container is pressed downward, the separation plate is closely attached to the locking portion and fixed in a correct direction without being inclined, and the space between the inner container and the separation plate can be accurately sealed. Therefore, the assembly convenience of the product can be improved.

Fifth, the siphon tube can be spaced from the bottom of the inner container by fixing the installation position of the separation plate by the locking portion, thereby minimizing deformation and damage due to direct contact between the siphon tube and the inner container. Further, since the lower end portion of the siphon tube can be manufactured in a simple shape, durability and productivity of the product can be improved.

Sixthly, additional heat is supplied to the upper part of the inner container by heating the side heating part of the side surface part of the inner container, so that the heating water of the cooking area can be heated more stably, thereby improving the cooking quality.

Drawings

Fig. 1 is an exploded perspective view showing an electric cooker according to a first embodiment of the present invention.

Fig. 2 is a sectional view showing an electric cooker according to a first embodiment of the present invention.

Fig. 3a, 3b and 3c are exemplary views illustrating an operation process of the electric cooker according to the first embodiment of the present invention.

Fig. 4 is an exploded perspective view showing an electric cooker according to a second embodiment of the present invention.

Figure 5a is a cross-sectional view of an inner bladder of a second embodiment of the present invention.

Fig. 5b is a cross-sectional view showing a modification of the inner bladder according to the second embodiment of the present invention.

Fig. 6 is a sectional view showing an electric cooker according to a second embodiment of the present invention.

Fig. 7a, 7b and 7c are exemplary views illustrating an operation process of the electric cooker in accordance with the second embodiment of the present invention.

Description of reference numerals

100. 200: electric cooker 10, 210: inner container

20. 220, and (2) a step of: separation plate 25, 225: siphon tube

30: separator plate liner 40, 240: heating part

50: cover 50 c: penetration part

60. 260: body

Detailed Description

Hereinafter, an electric cooker according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is an exploded perspective view illustrating an electric cooker according to a first embodiment of the present invention, fig. 2 is a sectional view illustrating a separation plate gasket of the electric cooker according to the first embodiment of the present invention, and fig. 3a, 3b and 3c are exemplary views illustrating an operation process of the electric cooker according to the first embodiment of the present invention.

As shown in fig. 1 to 3c, the electric cooker 100 of the present embodiment includes a body 60, a cover 50, an inner container 10, a separation plate 20, a separation plate gasket 30, and a heating part 40.

Referring to fig. 1 to 2, a heating space d for attaching and detaching the inner container 10 is formed in the main body 60. The inner container 10 is formed in a container shape having an open upper portion and an accommodating space a formed therein.

On the other hand, the separation plate 20 is detachably mounted in the inner container 10, and the receiving space a is divided into an upper cooking area b for receiving the cooking object r and a lower water storage area c for storing the heated water w by the separation plate 20.

In detail, the separation plate 20 is preferably formed of a disc-shaped member having an outer diameter smaller than the upper inner diameter of the inner container 10 and larger than the minimum inner diameter portion of the stepped portion 11, and the outer diameter corresponds to the inner diameter, without directly contacting the upper inner periphery of the inner container 10.

That is, the separation plate 20 has an outer diameter smaller than the inner diameter of the inner container 10 without directly contacting the inner periphery of the inner container 10. Further, it is preferable that the separation plate 20 is formed of an outer diameter of the inner container 10 excluding a gap corresponding to a radial thickness of the separation plate gasket 30 attached to an outer circumference of the separation plate 20.

Accordingly, the separation plate 20 can be attached to the storage space a such that the lower surface portion faces the water storage region c and the upper surface portion covers the lower portion of the cooking region b. A gasket support 21 extending upward is formed at the edge of the separation plate 20, and a separation plate gasket 30 made of a sealing material and formed on the gasket support 21 is attached to the separation plate 20, so that the liner 10 can be attached.

On the other hand, the above-mentioned separator pad 30 may be made of silicone or the like, which is a material that is both elastic and resistant to high temperature, and may include a pad body portion 31, an insertion-inducing portion 32, and a sealing protrusion 33.

The gasket body 31 preferably has a ring shape extending in the vertical direction so as to surround the outer periphery of the gasket support portion 21, and thus has a thickness in the radial direction equal to or larger than the interval between the gasket support portion 21 and the inner periphery of the inner container 10.

As a result, the liner main body portion 31 is pressed between the outer periphery of the liner support portion 21 and the inner periphery of the inner liner 10, and the inner periphery and the outer periphery of the liner main body portion 31 are in surface contact with the outer periphery of the liner support portion 21 and the inner periphery of the inner liner 10. Therefore, the space between the separation plate 20 and the inner periphery of the inner container 10, which is mounted in the housing space a, can be sealed accurately.

At the same time, since the outer surface of the liner main body 31 supported in a vertical cylindrical shape by the liner support portion 21 is guided along the inner circumference of the inner liner 10, the separation plate 20 can be attached in a correct direction without twisting.

The pad body 31 has a size corresponding to the vertical height of the pad support 21. The insertion guide portion 31 projects downward from the lower end of the pad support portion 21, and is formed to extend obliquely inward in the radial direction toward the lower side of the lower end of the pad body portion 31.

Accordingly, in a state where the liner support portion 21 is covered, the separation plate 20 is not directly attached to or detached from the inner circumferential surface of the liner 10, and thus damage such as scratching or peeling of the coating film of the liner 10 can be minimized.

At this time, the lower end of the insertion guide portion 32 is narrowed so as to be smaller than the inner diameter of the upper portion of the inner container 10, so that the separation plate 20 can be maintained in a state of being spaced apart from the inner circumference of the inner container 10 when being attached. Accordingly, the separator pad 30 can be smoothly inserted without being wound or dropped due to friction with the inner container 10.

Further, it is more preferable that the insertion guide portion 32 is coupled to a lower end portion of the pad support portion 21. That is, the insertion guide portion 32 is closely attached to surround the lower end portion of the liner support portion 21, and thus, when the inner container 10 and the liner main body portion 31 are rubbed, the coupled state with the separation plate 20 can be stably maintained.

The seal projection 33 is formed to project outward in the radial direction at the outer peripheral upper end of the gasket body portion 31. At this time, the sealing protrusion 33 is pressed and deformed upward by the inner periphery of the inner container 10 when the separation plate 20 is inserted, and can be closely attached to the inner periphery of the inner container 10 by a restoring force in a lower direction.

Further, the inner peripheral upper end portion 34 of the separator pad 30 is protruded radially inward in accordance with the pressure deformation of the seal projection 33, and the upper end portion of the pad support portion 21 is restricted, so that the upward flow of the separator 20 can be prevented.

At the same time, the upper surface portion of the separation plate liner 30 is deformed to be inclined upward toward the radially outer side, and thus is pressurized radially outward by the load of the object to be cooked r or the heated water w filled in the cooking area b. Therefore, the separation plate gasket 30 and the inner container 10 can be more stably adhered.

A hollow siphon 25 for heating the water w immersed in the water storage region c is provided in a central lower surface portion of the separation plate 20. The siphon 25 may be integrally formed on the lower surface of the separation plate 20, or may be implemented as an additional member, or may be coupled to the lower surface of the separation plate 20. On the other hand, it is preferable that a connection portion between the separation plate 20 and the siphon 25 is sealed.

Further, it is preferable that the siphon tube 25 is provided with an upper hole 24, in which the cooking area b and the siphon tube 25 are communicated with each other while being hollow, and a downward flow of the cooking object r accommodated in the cooking area b is restricted.

The perforated portion 24 may be integrally formed in the center of the separation plate 20 so as to cover the upper opening of the siphon tube 25, or may be implemented as an additional member, or may be disposed above the separation plate 20.

In this case, it is preferable that a plurality of meshes 24a having a diameter smaller than a predetermined diameter are formed to penetrate through the perforated portion 24 so that particles of the object to be cooked r are caught. The diameter of the mesh 24a is set in consideration of the particle size based on the kind of the cooking object r, and may be set to 3mm or less based on rice.

Further, it is preferable that a crown support portion 25b is provided at a lower end portion of the siphon tube 25, the crown support portion 25b is supported at a bottom portion of the inner container 10, and an arch hole 25a is formed to penetrate a side surface portion of the crown support portion 25 b.

In detail, it is preferable that the lower end of the crown support portion 25b is formed flat, and the arch hole 25a is formed in a plurality of spaced-apart positions in the circumferential direction. The arch hole 25a is formed in a semicircular shape connected to a lower end of the crown support portion 25b, and the crown support portion 25b may be formed in an inverted crown shape. In a state where the crown support portion 25b is closely supported by the bottom of the inner container 10, the water storage region c and the siphon tube 25 are communicated with each other to be hollow.

Of course, the arch hole 25a is preferably formed at a low position in order to smoothly raise the heating water w, but may be formed at a position spaced apart from the lower end of the crown support portion 25b to the upper side. The arch hole 25a may be formed in various shapes such as a circle and a polygonal cross section, in addition to a semicircular shape.

Preferably, the upper surface of the separation plate 20 is formed with a drainage guide surface portion 22 whose height increases as the height of the outer surface increases in the radial direction along the outer peripheral region of the siphon tube 25. The drainage guide surface portion 22 is a portion corresponding to a portion between an edge of the through hole portion 24 and a lower end edge of the pad support portion 21 in the upper surface of the separation plate 20.

In detail, the drainage guide surface portion 22 preferably has a lower surface height as it approaches the through hole portion 24. That is, the drainage guide surface portion 22 may be formed as an inclined surface inclined downward toward the inside in the radial direction, a slope surface recessed in a circular shape, a stepped surface recessed in multiple steps with a step, or the like.

In this case, in order to reinforce the strength, a plurality of concave and convex portions 23 may be formed in the radial direction of the separation plate 20, and the drainage guide surface portion 22 may be formed along the concave and convex portions 23.

On the other hand, the lid 50 having a through-hole 50c formed at one side thereof is provided at an upper portion of the body 60. In detail, the lid 50 includes an outer lid 50a coupled to an upper end portion of the body 60 to be opened and closed so as to cover the heating space d, and an inner lid 50b detachably attached to a lower surface portion of the outer lid 50a so as to cover the receiving space a.

The penetrating portion 50c includes a steam discharging portion 51 of the outer cover 50a and a communication hole 52 formed at one side of the inner cover 50b to communicate with the steam discharging portion 51.

In this case, the steam discharge part 51 means a space part vertically penetrating one side of the outer cap 50a so that the communication hole 52 communicates with the outside air. A sealing gasket 51a is provided at a lower end edge of the steam discharge part 51 to be in close contact with an outer peripheral region of the communication hole 52 so as to prevent steam leakage between the outer cap 50a and the inner cap 50 b.

Of course, the steam discharge part 51 may further include a pressure switching valve device (not shown). In detail, during cooking, the cooking area b covered by the inner cover 50b is selectively communicated with the external atmosphere according to opening and closing of the pressure switching valve device (not shown).

On the other hand, the heating part 40 heats the inner container 10 such that the steam pressure of the water storage region c is increased and the heating water w is supplied to the cooking region b along the siphon tube 25. Further, the heating unit 40 may be implemented as a hot plate heater, an induction heating device, or the like, and is preferably disposed at a lower portion of the heating space d so as to face the bottom portion of the inner container 10.

Specifically, referring to fig. 3a and 3b, when the inner container 10 is filled with water, the separation plate 20 is installed inside the inner container 10 such that the arch hole 25a of the siphon tube 25 is submerged. In this case, only in the state where the arch hole 25a is completely immersed, the steam generated when the water is heated is isolated in the water storage region c, and a high pressure is generated to raise the heated water w on the lower side by the siphon tube 25.

Further, the lower end of the crown support portion 25b is supported by the bottom of the inner container 10, so that the installation position of the separation plate 20 can be fixed. On the other hand, the size ratio of the cooking area b and the water storage area c can be adjusted according to the length of the siphon 25.

In this case, the cooking object r is disposed on the upper surface of the installed separation plate 20, the lid 50 is closed, and an operation button (not shown) provided on the body 60 is selected, so that the cooking process of the cooking object r can be performed.

That is, the heating part 40 is operated, the inner container 10 and the heating water w stored in the water storage region c are heated, and when the temperature of the heating water w is increased to a boiling point or higher, steam is generated. At this time, the space between the edge of the separation plate 20 and the inner container 10 is sealed by the separation plate gasket 30, and the arch hole 25a is immersed in the heated water w. Thereby, the vapor pressure with the space between the surface of the heating water w and the lower surface of the separation plate 20 can be increased.

On the other hand, the cooking area b communicating with the atmosphere through the through portion 50c of the cover 50 maintains the atmospheric pressure, and the siphon tube 25 communicating with the cooking area b through the perforated portion 24 also maintains the atmospheric pressure.

When the steam pressure in the water storage area c is increased to the atmospheric pressure or more, the heated water w in the water storage area c rises along the siphon tube 25 by the pressure difference between the water storage area c and the cooking area b, and can be supplied to the cooking area b.

At this time, the heated water w in the water storage area c has a surface water level lowered to a height corresponding to the upper end of the arch hole 25a, and is raised only by the siphon tube 25. That is, when the water level of the water storage area c is reduced to the arch hole 25a or less, the steam flows through the arch hole 25 a. At this time, since the pressure difference between the cooking area b and the water storage area c is removed, the heated water w that has risen to the cooking area b falls again to the water storage area c.

Accordingly, only the heated water w stored in the upper portion of the arch-shaped hole 25a among the heated water w in the water storage region c can be raised to the cooking region b, and the position of the arch-shaped hole 25a plays a main parameter role in raising and lowering the heated water w.

In this case, it is preferable that the length of the siphon tube 25 is set so that the volume of the water storage area c corresponding to the outer contour of the siphon tube 25 from the upper side of the upper end of the arcuate hole 25a is larger than the sum of the internal volume of the siphon tube 25 and the volume of heated water in which the cooking object r on the cooking area b side can be completely immersed. Accordingly, the heated water w can be filled along the upper surface of the separation plate 20 and the upper portion of the separation plate liner 30 so that the cooking object r is completely immersed in the heated water w having a high temperature.

In this case, the heated water w rising as the inner lid 50b covers the upper opening of the inner container 10 is prevented from being scattered and discharged or foreign substances are prevented from flowing into the cooking area b. Further, the communication hole 52 of the inner lid 50b can maintain the communication state between the cooking area b and the external atmosphere.

The separation plate 20 covers a lower portion of the cooking region b and is disposed to face the water storage region c. At this time, the lower surface of the separation plate 20 is in contact with the steam heated at a high temperature, and the upper surface of the separation plate 20 is in contact with the heated water w rising to the cooking area b.

That is, the storage space a is divided into the water storage area c and the cooking area b by the separation plate 20, and heat of steam heated at a high temperature in the water storage area c is transferred to the heating water w in the cooking area b through the entire area of the separation plate 20.

Accordingly, the heated water w in the cooking area b can be stably maintained at a cooking temperature suitable for the object to be cooked r without excessive variation, and thus the heating efficiency and cooking quality of the product can be remarkably improved.

On the other hand, the electric cooker 100 further includes a control unit 61, and the control unit 61 controls the power of the heating unit 40 such that the water filled in the cooking area b is repeatedly increased or decreased according to the steam pressure of the water storage area c, thereby separating the starch of the cooking object r.

That is, when the control unit 61 supplies power to the heating unit 40, the heating water w is heated and vaporized, and the steam pressure of the water storage region c is increased. On the other hand, when the control unit 61 turns off the power supply to the heating unit 40, the water vapor is liquefied to reduce the vapor pressure in the water storage area c.

In detail, referring to fig. 3b to 3c, when the steam pressure of the water storage region c increases to be more than the atmospheric pressure, the heating water w of the water storage region c is supplied to the cooking region b. Further, when the object to be cooked r is immersed in the heated water w at a high temperature, a starch-based substance such as pullulan is dissolved in the heated water w.

When the steam pressure in the water storage area c is reduced, the heated water w in the cooking area b is discharged to the water storage area c through the through hole 24, and can be separated from the cooking object r. At this time, the eluted starch flows together with the heated water w and is separated from the object to be cooked r. The upper surface of the separation plate 20 is configured such that the drainage guide surface 22 lowers the through-hole 24. Accordingly, the viscous heated water w from which starch is eluted smoothly flows toward the perforated portion 24 by gravity, and is discharged to the water storage region b.

Then, the control unit 61 repeats the supply and interruption of the power to the heating unit 40 at predetermined intervals, thereby repeating the supply of the heating water w to the cooking area b and the discharge of the supplied heating water w to the water storage area c. Therefore, the starch contained in the cooking object r can be effectively separated while the cooking object r is cooked. In this case, it is preferable that the bottom portion of the inner container 10 be formed to be inclined downward as the contour region 19 of the central portion supported by the crown support portion 25b is closer to the outside in the radial direction.

Thereby, the heated water w having high specific gravity from which starch is eluted is collected in the depressed portion, and the starch content in the heated water w supplied to the cooking region b can be reduced at the time of subsequent heating.

In this way, the electric cooker 100 includes the siphon tube 25 connecting the water storage area c and the cooking area b on one side of the separation plate 20 dividing the receiving space a of the inner container 10 into upper and lower portions. Therefore, the heated water w can be made to flow to the cooking area b and the water storage area c by only the change of the steam pressure of the water storage area c passing through the heating part 40, thereby effectively separating the starch of the cooking object r.

Thus, a compact cooking device for weight reduction, diet, and the like can be provided which has a low starch content and does not require an additional water storage tank or a valve device for discharging the heated water w.

Unlike the stew cooking, the heating water w rises in direct contact with the cooking object r according to the difference in steam pressure between the water storage area c and the cooking area b. Therefore, the cooking object r absorbs sufficient moisture to be cooked, thereby improving the cooking quality of the product.

Further, the siphon tube 25 having the arcuate hole 25a formed in the lower end side portion thereof fixes the installation position of the separation plate 20 in a state where the water storage region c and the interior of the siphon tube 25 communicate with each other. Therefore, the inner container (10) can be easily applied to a common electric rice cooker, thereby improving the interchangeability of products and the production efficiency.

On the other hand, fig. 4 is an exploded perspective view showing an electric cooker according to a second embodiment of the present invention, fig. 5a is a sectional view of an inner container according to the second embodiment of the present invention, fig. 5b is a sectional view showing a modification of the inner container according to the second embodiment of the present invention, fig. 6 is a sectional view showing the electric cooker according to the second embodiment of the present invention, and fig. 7a, 7b and 7c are exemplary views showing an operation process of the electric cooker according to the second embodiment of the present invention.

As shown in fig. 4 to 7c, the electric cooker 200 according to the second embodiment includes a body 260, the above-mentioned cover 50, the inner container 210, the separation plate 220, the above-mentioned separation plate gasket 30, and the heating part 240.

In this case, in the second embodiment, since the engaging portion is formed on the inner periphery of the inner container 210, and the basic configuration except for the partial configuration of the separation plate 220 and the heating portion 240 is the same as that of the first embodiment, detailed description of the same configuration is omitted.

The outline region 219, the pad support portion 221, the drainage inducing surface portion 222, the uneven portion 223, the perforated portion 224, the mesh 224a, and the control portion 261 shown in the drawings showing the second embodiment are substantially the same as the outline region 19, the pad support portion 221, the drainage inducing surface portion 22, the uneven portion 223, the perforated portion 24, the mesh 24a, and the control portion 61 shown in the drawings showing the first embodiment, and thus detailed description thereof will be omitted.

Referring to fig. 4 to 7, a heating space d for attaching and detaching the inner container 210 is formed in the main body 260. The inner container 210 is opened at its upper portion, has a container shape having a receiving space a formed therein, and has a locking portion formed at its inner periphery.

Specifically, the locking portion is a portion where the cross-sectional area of the receiving space a is narrowed, and as shown in fig. 5a, the locking portion may be implemented as a stepped portion 211 formed by narrowing the lower portion of the inner container 210 inward in the radial direction in the inner circumferential direction. On the other hand, as shown in fig. 5b, the locking portion may be formed as a seating protrusion 2111 formed to protrude radially inward from the inner periphery of the inner container 210. Preferably, the step portion 211 and the seating protrusion 2111 are formed such that the upper surface thereof is inclined radially inward toward the lower side.

In the present embodiment, a case where the locking portion is implemented as the stepped portion 211 will be described as an example, and in a case where the locking portion is replaced with the seating protrusion 2111, the upper surface portion of the seating protrusion 2111 functions in the same manner as the upper surface portion 211a of the stepped portion 211.

On the other hand, the separation plate 220 is preferably attached to and detached from the inner container 210, and has an outer diameter smaller than the upper inner diameter of the inner container 210 and larger than the minimum inner diameter of the locking portion without directly contacting the upper inner periphery of the inner container 210.

Accordingly, the lower surface of the separation plate 220 faces the water storage area c, and the upper surface of the separation plate 220 covers the lower portion of the cooking area b, so that the separation plate can be supported by the locking part and mounted in the receiving space a.

The gasket support portion 221 extending upward is formed at the edge of the separation plate 220, and the separation plate 220 may be attached to the separation plate gasket 30 formed of a sealing material on the gasket support portion 221 and may be attached to the inner container 210.

At this time, the edge of the separation plate 220 and the separation plate packing 30 are supported by the step 211, which is the locking part, so that the installation position of the separation plate 220 can be fixed. The size ratio of the cooking area b and the water storage area c can be adjusted according to the position of the locking part.

On the other hand, the separator pad 30 may be made of silicone or the like, which is a material that is both elastic and resistant to high temperature, and may include the pad body 31, the insertion-inducing portion 32, and the sealing protrusion 33.

The lower end of the insertion guide portion 32 is narrowed to be smaller than the inner diameter of the upper portion of the inner container 210, so that the separation plate 220 can be spaced apart from the inner circumference of the inner container 210 when being attached. Accordingly, the separator pad 30 can be smoothly inserted without being wound or dropped due to friction with the inner container 210.

At this time, the inclined outer surface portion of the insertion-inducing portion 32 is gently slid along the upper surface portion 211a of the stepped portion 211, so that it can be seated on the stepped portion 211, thereby allowing the separation plate 220 to be more easily inserted.

When the separation plate 220 inserted into the inner container 210 is pressed downward, the outer surface of the insertion guide portion 32 and the upper surface 211a of the stepped portion 211 are joined to each other and closely contact each other. Therefore, the separation plate 220 can be fixed in a correct direction without being inclined, and the separation plate 220 and the inner container 210 can be sealed correctly.

A hollow siphon 225 for heating the water w immersed in the water storage region c is provided in a central lower portion of the separation plate 220. In this case, when the separation plate 220 is attached to the siphon tube 225, a lower end portion of the siphon tube 225 is preferably formed to be extended by a length spaced from a bottom portion of the inner container 210 so that the inner space of the siphon tube 225 and the water storage region c communicate with each other.

That is, the heated water w in the water storage region c passes through the hollow inside of the siphon tube 225 by the space between the lower end of the siphon tube 225 and the bottom of the inner container 210, and the heated water w in the siphon tube 225 can flow into the water storage region c.

On the other hand, it is preferable that the heating part 240 includes: a lower heating part 240a disposed below the heating space d to heat the bottom of the inner container 210; the side heating part 240b is disposed on an outer side surface of the heating space d to heat a side surface portion of the inner container 210.

It is preferable that the side surface heating part 240b is disposed along an upper portion of the separator pad 30 so as to surround an outer surface of the heating space d, and a lower end of the side surface heating part 240b is positioned higher than an upper end of the separator pad 30.

In detail, referring to fig. 7a and 7b, when the inner container 210 is filled with water, the separation plate 220 is installed inside the inner container 210 in such a manner that the lower end of the siphon tube 225 is immersed.

In this case, only in a state where the lower end portion of the siphon tube 225 is completely immersed, the steam generated when heating the water is isolated in the water storage region c, and a high pressure can be generated to raise the heating water w on the lower portion side by the siphon tube 225.

The edge of the separation plate 220 and the separation plate gasket 30 are seated on the stepped portion 211, so that the installation position of the separation plate 220 can be fixed. Further, the size ratio of the cooking area b and the water storage area c can be adjusted according to the formation position of the stepped portion 211.

Accordingly, unlike the case where the separation plate 220 is supported by the lower end of the siphon tube 225, the lower end of the siphon tube 225 is spaced from the bottom of the inner container 210, thereby preventing direct contact. Therefore, the scratch of the coating film of the inner container 210 and the damage of the siphon tube 225 caused by thermal deformation can be minimized, the shape of the lower end of the siphon tube 225 can be simplified, and the production efficiency of the product can be improved.

The cooking object r is disposed on the upper surface of the installed separation plate 220, the lid 50 is closed, and an operation button (not shown) provided on the main body 260 is selected, so that the cooking process of the cooking object r can be performed. That is, the lower heating part 240a is operated, the inner container 210 and the heating water w stored in the water storage region c are heated, and when the temperature of the heating water w is increased to a boiling point or higher, water vapor is generated.

The space between the edge of the separation plate 220 and the inner container 210 is sealed by the separation plate gasket 30, and the lower end of the siphon tube 225 is immersed in the heating water w, so that the steam pressure in the space between the surface of the heating water w and the lower surface of the separation plate 220 can be increased.

On the other hand, the cooking area b communicating with the atmosphere through the through portion 50c of the cover 50 maintains the atmospheric pressure, and the siphon tube 225 communicating with the cooking area b through the through hole portion 224 also maintains the atmospheric pressure.

When the steam pressure in the water storage area c is increased to be equal to or higher than the atmospheric pressure, the heated water w in the water storage area c is raised along the siphon tube 225 by the pressure difference between the water storage area c and the cooking area b, and can be supplied to the cooking area b.

At this time, the heated water w in the water storage area c has a surface water level lowered to a height corresponding to the lower end of the siphon tube 225, and is raised to the cooking area d only at this time. That is, when the water level of the water storage region c is decreased to a level lower than the height of the lower end of the siphon tube 225, the steam flows between the lower end of the siphon tube 225 and the water surface. Therefore, since the pressure difference between the cooking area b and the water storage area c is removed, the heating water w that has risen to the cooking area b falls again to the water storage area c.

Accordingly, the heated water w having a volume c1 corresponding to the distance from the lower end to the lower end of the siphon tube 225 in the water storage region c does not rise to the cooking region b. On the other hand, of the heated water w in the water storage area c, only the heated water w stored in the upper portion side from the lower end portion of the siphon tube 25 can be raised to the cooking area b. At this time, the length of the siphon tube 225 and the position of the step portion 211 supporting the separation plate 220 play a main parameter role when the heated water is lifted and lowered.

Preferably, the step portion 211 is located such that a volume c2 of a usable water storage area corresponding to an area from a lower end edge of the siphon tube 225 to an upper outer side of the water storage area c is greater than a sum of a volume c3 of the siphon tube 225 and a maximum cooking water volume b1 of the cooking area b.

Specifically, the usable water storage area is an area corresponding to a space from the outer circumference of the siphon tube 225 to the inner circumference of the inner container 210, among areas from a plane corresponding to the lower end of the siphon tube 225 to the lower surface of the separation plate 220.

The maximum cooking water volume b1 is a volume from the upper surface of the separating plate 220 to a water level at which the cooking object r corresponding to the maximum cooking amount in the cooking area b can be completely immersed.

At this time, the heated water w is filled along the upper surface of the separation plate 220 and the upper portion of the separation plate liner 30. Accordingly, when the inner tub 210 is heated, the object to be cooked can be completely immersed in the heated water w having a high temperature in a state where the lower end of the siphon tube 225 is immersed in the heated water w in the water storage region c.

On the other hand, the electric cooker 200 further includes a control part for controlling the power of the heating part 240 such that the water filled in the cooking area b is increased or decreased based on the steam pressure of the water storage area c, and separating the starch of the cooking object r.

In this manner, the electric cooker 200 includes the siphon tube 225 connecting the water storage region c and the cooking region b to each other on the side of the separation plate 220 which vertically divides the storage space a of the inner container 210. Accordingly, the heated water w can flow through the cooking region b and the water storage region c by only the change of the steam pressure of the water storage region c of the heating part 240, thereby effectively separating the starch of the cooking object r.

Thus, cooking with low starch content for weight reduction, dietotherapy, etc. can be realized. Further, the heated water w rises in direct contact with the object to be cooked r according to the steam pressure difference between the water storage area c and the cooking area b, so that the object to be cooked r absorbs sufficient water to cook, thereby improving the cooking quality of the product.

As described above, the present invention is not limited to the above-described embodiments, and those skilled in the art to which the present invention pertains may implement modifications of the present invention without departing from the scope of the present invention claimed in the claims, and such modified implementations fall within the scope of the present invention.

Claims

1. An electric cooking appliance, comprising:

an inner container, which forms a containing space inside;

a separation plate which is detachably attached to the inner container so that the accommodating space is divided into an upper cooking area for accommodating the cooking object and a lower water storage area for storing heated water, wherein a siphon tube for heating water immersed in the water storage area is arranged at the lower surface of the separation plate; and

a separation plate gasket installed at an edge of the separation plate to seal a space between the separation plate and the inner container such that steam pressure of the water storage region is increased and the heated water rises along the siphon tube when the inner container is heated,

a spacer support part extending upward so as to be in surface contact with the spacer of the separation plate is formed at the edge of the separation plate,

a locking part is formed on the inner periphery of the inner container, the separating plate liner is supported on the locking part in a mode of fixing the installation position of the separating plate,

the separating plate is formed by a disc-shaped member which has an outer diameter smaller than the inner diameter of the upper portion of the inner container and larger than the minimum inner diameter portion of the locking portion without directly contacting with the inner periphery of the upper portion of the inner container, so that the cooking area is formed by the inner surface of the inner container and the upper surface of the separating plate,

the position of the locking part is set to be larger than the sum of the volume of the siphon pipe and the maximum cooking water volume of the cooking area,

the usable water storage region is a region corresponding to a region from the outer periphery of the siphon tube to the inner periphery of the inner container in a region from a plane corresponding to the lower end of the siphon tube to the lower surface of the separation plate,

the maximum volume of water for cooking is set to a volume from the upper surface of the separating plate to a water level at which the cooking object corresponding to the maximum cooking amount in the cooking area is immersed.

2. The electric cooking appliance of claim 1, wherein the separation plate has a perforated portion such that the cooking area and the siphon tube communicate with each other and a downward flow of the cooking object is restricted.

3. The electric cooking appliance according to claim 2, wherein a plurality of meshes having a diameter smaller than a predetermined diameter are formed to penetrate the perforated portion, so that the particles of the cooking object are caught.

4. The electric cooking appliance of claim 1, wherein the separation plate is disposed opposite to the water storage region and has an outer diameter corresponding to an inner diameter of the inner container to cover a lower portion of the cooking region.

5. The electric cooking appliance according to claim 1, wherein the siphon tube is integrally formed at a lower surface portion of the separation plate, and a crown support portion supported at a bottom portion of the inner container is provided at a lower end portion of the siphon tube to fix an installation position of the separation plate.

6. An electric cooking appliance as claimed in claim 5, wherein an arch hole is formed through a side surface of the crown support so that the water storage area and the siphon tube communicate with each other.

7. The electric cooking appliance according to claim 1, wherein a drainage guide surface portion is formed on the upper surface portion of the separation plate along an outer peripheral region of the siphon tube, and a surface height of the drainage guide surface portion increases as it gets closer to an outer side in a radial direction.

8. The electric cooking appliance according to claim 1, further comprising a heating part which heats the inner container such that steam pressure of the water storage region is increased and the heating water is supplied to the cooking region along the siphon pipe.

9. An electric cooking appliance according to claim 8,

the heating part includes:

a lower heating part for heating the bottom of the inner container,

a side heating part for heating the side part of the inner container,

the side surface heating section is disposed along an upper side of the separator pad so as to surround an outer surface of the heating space in which the inner container is attached and detached.

10. The electric cooker according to claim 1, wherein an insertion guide portion inclined inward in a radial direction is formed at a lower end portion of the separation plate gasket as the lower side is closer to the inside.

11. An electric cooking appliance as claimed in claim 1, wherein a sealing projection is formed on the outer surface of the separation plate gasket to project outward in the radial direction.

12. The electric cooking appliance according to claim 1, further comprising a control part which controls a power source of the heating part so that water filled in the cooking area is repeated based on increase and decrease of the steam pressure in the water storage area to separate starch of the cooking object.

13. An electric cooking appliance according to claim 1,

the upper end of the inner container is provided with a cover for covering the cooking area,

a through part is formed on one side of the cover in a mode of communicating the cooking area with the atmosphere.

14. The electric cooking appliance as claimed in claim 1, wherein the locking portion is a stepped portion formed by narrowing an inner periphery of a lower portion of the inner container in a radial direction so as to seat the separation plate gasket.

15. An electric cooking appliance as claimed in claim 14, wherein the stepped portion is formed to be inclined inward in a radial direction as it goes to a lower side.

16. An electric cooking appliance according to claim 1,

the locking part is a setting projection which is arranged in a protruding way from the inner periphery of the lower part of the inner container to the inner side of the radius direction so as to set the separating plate gasket,

the upper surface of the mounting projection is formed to incline inward in the radial direction as the upper surface is closer to the lower side.

17. The electric cooking appliance of claim 1, wherein the siphon tube is integrally formed at a lower portion of the separation plate, and a lower end portion of the siphon tube is extended by a length spaced from a bottom of the inner container to communicate with the water storage region.