CN110811293B - Electric cooking appliance - Google Patents

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 assembled with the inner container to divide the containing space into an upper side cooking area for containing the object to be cooked and a lower side water storage area for storing the heated water, wherein the lower part of the separation plate is provided with a siphon tube for immersing the heated water in the water storage area; a separating plate liner which is arranged on the edge of the separating plate in a mode of sealing the space between the separating plate and the inner container; and a heating part for heating the inner container to increase the steam pressure of the water storage area and supply the heated water to the cooking area along the siphon pipe.

Description

Electric cooking appliance

Technical Field

The present invention relates to an electric cooking appliance, and more particularly, to an electric cooking appliance which can reduce starch content of a cooking object and improve productivity 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 households to cook food, and is composed of a body having a heating portion and a cover covering the upper portion of the 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 has an electronic valve installed at a lower surface of an inner container for receiving 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 increases the amount of water consumed during cooking, and also causes a problem of low overall cooking quality, which lowers the satisfaction of consumers.

Documents of the prior art

Patent literature

Korean laid-open patent No. 10-2007-0078741

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 cooker, 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; a separation plate liner installed at an edge of the separation plate in such a manner as to seal between the separation plate and the inner container; and a heating part for heating the inner container to increase the steam pressure of the water storage area and supply the heated water to the cooking area along the siphon pipe.

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 product is provided which allows cooking with low starch content for weight loss, dietetic therapy, etc., without the need for additional water tanks or valve arrangements.

Secondly, since the auxiliary sealing protrusion is protruded from a plurality of stages of the outer circumference of the liner body having a constant thickness with a certain interval from the inner circumference of the liner, the friction area with the liner is reduced, and the separation plate liner can be inserted gently. Furthermore, the auxiliary sealing protrusions of the plurality of stages are closely attached to the inner circumference of the inner container, thereby stably sealing the space between the separation plate and the inner container.

And third, the limit projection protruding from the inner circumference of the main body of the liner limits the upper end of the supporting part of the liner, thereby preventing the upward flow of the separating plate caused by steam pressure and simultaneously supporting the edge of the perforated plate for placing the cooking object. Thereby, a synergistic effect of minimizing abrasion damage and noise caused by friction between the separation plate and the perforated plate can be provided.

Fourth, an interlocking projection which is inclined upward toward the outside in the radial direction is connected to the outer end of the regulating projection which regulates the upper end portion of the pad support portion. Accordingly, the pressure applied to the restricting projection in the upper direction is converted into the pressure in the lower direction by the seesaw movement using the pad body portion as the supporting point, and is transmitted to the interlocking projection. Therefore, as the pressure in the water storage area increases, the contact force between the inner container and the interlocking projection increases, thereby improving the sealing performance of the separator gasket.

Fifthly, the siphon liner is attached to and detached from an edge of the opening, and when the siphon liner is separated, air in the water storage area flows to the cooking area through the opening. This prevents positive pressure from being generated by compression of air between the surface of the water filled in the inner tank and the lower surface of the separation plate, thereby enabling the separation plate to be inserted gently.

Sixth, if the siphon liner and the siphon tube are separated from the opening, the vacuum pressure due to the liquefaction of the steam in the water storage area can be removed, and thus the separation plate can be easily separated, thereby improving the convenience of use of the product.

Seventh, when the siphon tube and the siphon tube packing are pushed into the opening, the coupling guide vane is guided by the coupling guide projection and can be positioned in the correct direction on the upper surface of the base portion. Further, since the engaging projection projecting from the outer periphery of the seal pipe portion is engaged and fixed to the edge of the opening portion, the siphon tube and the siphon gasket can be easily attached to the separation plate, and the ease of assembly of the product can be improved.

Drawings

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

Fig. 2 is a sectional view showing a separation plate gasket of the electric cooker of the 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 a sectional view showing an electric cooker according to a second embodiment of the present invention.

Fig. 5a and 5b are perspective views illustrating a coupling process of a separation plate and a siphon tube in an electric cooker according to a second embodiment of the present invention.

Fig. 6 is a plan view showing a siphon gasket of the electric cooker according to the second embodiment of the present invention.

Fig. 7 is a sectional view showing a siphon gasket of an electric cooker according to a second embodiment of the present invention.

Fig. 8a, 8b, 8c, 8d and 8e are exemplary views illustrating an operation process of the electric cooker according to the second embodiment of the present invention.

Fig. 9 is a sectional view showing an electric cooker according to a third embodiment of the present invention.

Fig. 10 is a sectional view showing an electric cooker according to a fourth embodiment of the present invention.

Description of reference numerals

100. 200, 300, 400: electric cooker 10, 210, 310, 410: inner container

11. 411: step portion 20, 220, 320, 420: separating plate

25. 225, 380, 480: siphon 30, 430: separating plate lining pad

40a, 40b, 440a, 440 b: the heating portion 50: cover for portable electronic device

50 c: through portions 60, 460: body

70: perforated plate

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 a sectional 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, an electric cooker 100 of a first embodiment of the present invention includes a body 60, a cover 50, a liner 10, a separation plate 20, a separation plate gasket 30, a perforated plate 70, and heating parts 40a, 40 b.

A heating space d is formed in the body 60, and the upper portion of the inner container 10 is opened, and a container type having a receiving space therein is provided and is mounted in and dismounted from the heating space d.

Further, it is preferable that a locking portion is formed on the inner periphery of the inner container 10. The locking portion may be a stepped portion 11 formed by narrowing the inner periphery of the lower portion of the inner container 10 inward in the radial direction, or a protrusion formed by protruding from the inner periphery of the inner container 10 inward in the radial direction. On the other hand, in the present embodiment, a case where the locking portion is implemented as the stepped portion 11 is illustrated and described as an example. In this case, the upper surface portion 11a of the stepped portion 11 is preferably formed to be inclined inward in the radial direction as it goes downward.

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

In detail, the outer diameter of the separation plate 20 is preferably smaller than the upper inner diameter of the inner container 10 and larger than the minimum inner diameter of the stepped portion 11 so as not to directly contact the upper inner circumference of the inner container 10.

Accordingly, the separation plate 20 may be mounted in the housing space such that the lower surface thereof faces the water storage region c and the upper surface thereof covers the lower portion of the cooking region b, and is supported by the stepped portion 11.

A gasket support 21 extending upward is formed at an edge of the separation plate 20, and the separation plate 20 is attached to the inner container 10 by attaching the separation plate gasket 30 made of a sealing material to the gasket support 21.

At this time, the edge of the separation plate 20 and the separation plate packing 30 are supported by the stepped portion 11, so that the installation position of the separation plate 20 can be fixed. 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 11.

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. At this time, an opening 26 is formed through the center of the separation plate 20 so that the interior of the siphon tube 25 and the cooking area b communicate with each other.

The siphon tube 25 may be integrally formed on the lower surface of the separation plate 20, or may be implemented as an additional member and coupled along the edge of the opening 26. On the other hand, the connection portion between the separation plate 20 and the siphon 25 is preferably sealed.

Further, it is preferable that the lower end of the siphon tube 25 is extended by a length spaced from the bottom of the inner container 10 in a state where the separation plate 20 is attached to the inner container 10 so that the hollow inside of the siphon tube 25 and the water storage region c communicate with each other. That is, the heated water w of the siphon tube 25 can flow into the water storage region c through the hollow inside of the siphon tube 25 by the space between the lower end of the siphon tube 25 and the bottom of the inner container 10.

Of course, in the case where the stepped portion 11 is not provided on the inner periphery of the inner container 10, the lower end of the siphon tube 25 may be supported by the bottom of the inner container 10, and the installation position of the separation plate 20 may be fixed.

In this case, a plurality of holes are preferably formed to penetrate around the siphon tube 25. Accordingly, the heated water w can flow between the hollow inside of the siphon tube 25 and the water storage region c in a state where the lower end of the siphon tube 25 and the bottom of the inner container 10 are in close contact with each other. At this time, the maximum heating water amount that can be raised from the water storage area c to the cooking area b can be adjusted according to the uppermost height of the hole.

Further, it is preferable that the upper surface of the separation plate 20 is formed with a drainage guide surface portion 22 whose surface height increases toward the outer side 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 the edge of the opening portion 26 and the lower end edge of the pad support portion 21 in the upper surface of the separation plate 20. Specifically, the drainage guide surface portion 22 may be formed as an inclined surface inclined downward radially inward so as to have a height that decreases toward the side surface of the opening portion 26, a circularly concave inclined surface, a stepped surface that is concave in multiple steps with a difference in height, or the like.

In this case, in order to reinforce the strength, a plurality of concave and convex portions (not shown) may be formed in the radial direction of the separation plate 20, and the drainage inducing surface portion 22 may be formed along the concave and convex portions.

On the other hand, the perforated plate 70 covers the opening 26 so that the cooking area b and the siphon tube 25 communicate with each other and the downward flow of the cooking object r accommodated in the cooking area b is restricted.

In this case, it is preferable that the perforated plate 70 is formed to have a plurality of meshes 71 penetrating therethrough so as to have a diameter smaller than a predetermined diameter to lock the particles of the object to be cooked r. Further, the diameter of the mesh 71 is preferably 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.

Thereby, the cooking object r can be placed on the upper surface of perforated plate 70. In a state where the downward flow of the cooking object r is restricted, the heated water w in the siphon tube 25 may flow into the cooking area b, and the heated water w in the cooking area b may flow into the siphon tube 25.

The perforated plate 70 may be coupled along the edge of the opening 26 and may be formed integrally with the separation plate 20. On the other hand, in the present embodiment, the perforated plate 70 is implemented as an additional member separated from the separation plate 20 and installed on the upper portion of the separation plate 20 as an example.

In this case, the perforated plate 70 may be implemented as a circular plate having an outer diameter smaller than the inner diameter of the upper portion of the inner container 10 and larger than the inner diameter of the upper edge of the liner support 21, and inserted into the receiving space.

The perforated plate 70 has a flat mounting surface portion 70a at the center portion, and a reinforcement surface portion 70b inclined upward toward the outer side in the radial direction on the outer contour of the mounting surface portion 70 a.

On the other hand, referring to fig. 1 to 2, 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. The separator pad 30 may include a pad body 31, an insertion guide 32, a restriction protrusion 37, an interlocking protrusion 36, and auxiliary sealing protrusions 31a and 31 b.

The pad body 31 has a vertically elongated ring shape and is coupled so as to surround the outer periphery of the pad support 21, and preferably has a vertical height greater than that of the pad support 21. Accordingly, since the liner support portion 21 is covered, the separation plate 20 is detachable without being directly contacted with the inner circumferential surface of the inner container 10, and thus damage such as scratch and falling off of the coating film of the inner container 10 can be minimized.

Further, it is preferable that the inner periphery of the pad main body 31 is provided with a binding groove portion 31c formed to be recessed outward in the radial direction. Specifically, it is preferable that a binding end 21a is formed on the pad support portion 21, and the binding end 21a may be formed by folding an upper end portion of the pad support portion 21 outward in a radial direction.

At this time, the binding groove portion 31c is formed to be recessed in a size corresponding to the binding end 21a, and the binding end 21a is inserted into the binding groove portion 31c, thereby stably binding the separator pad 30 to the pad supporting portion 21.

At the same time, the inner periphery of the gasket main body portion 31 and the outer periphery of the gasket support portion 21 are in surface contact with each other, and the binding end 21a and the binding groove portion 31c are joined and closely attached to each other, so that the space between the gasket main body portion 31 and the gasket support portion 21 can be stably sealed.

Further, the restricting protrusion 37 is preferably formed to protrude radially inward along the upper end of the binding groove portion 31c so as to restrict the upper end of the pad supporting portion 21.

At this time, the curved extension 37a extends downward at the radially inner end of the restricting projection 37. Accordingly, the upper end portion of the pad support portion 21 is not separated from the separator pad 30 by supporting the inner circumference of the pad support portion 21 by the bent extension portion 37a, and thus, the restriction can be more stably performed.

Preferably, the interlocking projection 36 is formed to protrude along the outer periphery of the pad body portion 31, and a radially inner end thereof is connected to a radially outer end of the restricting projection 37. In this case, the interlocking projection 36 is formed to extend beyond the interval between the outer periphery of the liner main body portion 31 and the inner periphery of the liner 10, and is preferably formed to be inclined upward approximately radially outward.

The upper surface of the regulating projection 37 may have a flat-shaped seating portion 31d along a portion corresponding to the edge of the perforated plate 70, and the edge of the perforated plate 70 may be seated on the seating portion 31d and may be positioned at the upper end of the spacer support portion 21.

Thereby, an available space b2 is formed between perforated plate 70 and separating plate 20, and cooking object r placed on perforated plate 70 and opening 26 can be arranged at a distance. Further, since the spacer support 21 and the perforated plate 70 do not directly contact each other, noise and abrasion damage due to the contact can be prevented.

The insertion guide portion 32 is formed to extend obliquely inward in the radial direction as the lower end portion of the pad main body portion 31 is located downward so as to protrude downward from the lower end portion of the pad support portion 21.

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 10, so that the separation plate 20 can be spaced apart from the inner periphery 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.

More preferably, the insertion guide portion 32 is coupled to a connection portion between the pad support portion 21 and the drainage guide surface portion 22. Accordingly, the insertion-inducing portion 32 surrounds and closely contacts the lower end portion of the edge-side liner support portion 21 of the separation plate 20, and thus, when the separation plate liner 30 and the separation plate 20 are rubbed against the inner container 10, the coupled state of the separation plate liner 30 and the separation plate 20 can be stably maintained.

At this time, the inclined outer surface portion of the insertion guide portion 32 is gently slid along the upper surface portion 11a of the stepped portion 11, and is thereby placed on the stepped portion 11. Accordingly, when the separation plate 20 inserted into the inner container 10 is pressed downward, the outer surface portion of the insertion guide portion 32 and the upper surface portion 11a of the stepped portion 11 are joined to each other and closely contact each other. Therefore, the separation plate 20 can be fixed in a correct direction without being inclined, and the separation plate 20 and the stepped portion 11 can be sealed correctly.

In addition, in a state where the liner support portion 21 is covered, since the separation plate 20 is detachably attached without directly contacting the inner peripheral surface of the inner container 10, damage such as scratches and falling off of the inner container 10 due to painting can be minimized.

On the other hand, the thickness of the liner main body 31 in the radial direction is formed to be narrower than the interval between the liner support portion 21 and the upper inner periphery of the liner 10 so that the liner main body 31 is spaced from the inner periphery of the liner 10 by a predetermined interval.

The auxiliary seal projections 31a and 31b are formed on the outer periphery of the gasket body 31 so as to project outward in the radial direction of the outer periphery. In this case, it is preferable that the auxiliary sealing protrusions 31a and 31b have a radial length larger than a gap between the gasket main body 31 and the upper inner periphery of the inner container 10 and have a plurality of stages spaced apart from each other in the vertical direction.

Accordingly, since the frictional area between the separation plate liner 30 and the inner container 10 is reduced, the separation plate 20 can be inserted gently. Further, since the auxiliary sealing protrusions 31a and 31b of plural stages are closely attached to the inner circumference of the inner container 10, the gap between the separation plate 20 and the inner container 10 can be stably sealed.

In this case, it is preferable that the protruding length of the auxiliary seal projections 31a and 31b protruding outward in the radial direction increases as it approaches the upper side end. That is, it is preferable that the above-mentioned auxiliary sealing protrusions 31a, 31b are implemented as a pair of segments, and the length of the upper side end is formed longer than the lower side end.

Accordingly, the lower side end 31b of the auxiliary seal projection having an outer diameter similar to the inner diameter of the inner container 10 allows the upper side end 31a of the auxiliary seal projection to be pressed against the inner periphery of the inner container 10 in a state where the insertion position of the separator gasket 30 is guided. Therefore, the installation convenience and the sealing force of the separator pad 30 can be improved at the same time.

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.

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 external atmosphere. 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 discharging part 51 may further include a pressure switching valve device (not shown), and the cooking area b covered by the inner lid 50b may be selectively communicated with the outside atmosphere according to opening and closing of the pressure switching valve device (not shown) during cooking.

On the other hand, referring to fig. 1 to 3a, the heating parts 40a and 40b heat 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.

The heating units 40a and 40b may be implemented as hot plate heaters, induction heating devices, or the like. The heating units 40a and 40b preferably include a lower heating unit 40a disposed below the heating space d to heat the bottom of the inner container 10, and a side heating unit 40b disposed outside the heating space d to heat the side surface of the inner container 10.

It is preferable that the side surface heating part 40b is disposed along an upper portion side 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 40b is positioned at an upper side higher than an upper end of the separator pad 30.

Specifically, when the inner container 10 is filled with water, the separation plate 20 is inserted into the inner container 10. At this time, the edge of the separation plate 20 and the separation plate gasket 30 are seated on the stepped portion 11, the installation position of the separation plate 20 can be fixed, and the lower end portion of the siphon tube 25 is immersed in the heating water w.

In this case, only in a state where the lower end portion of the siphon tube 25 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 25.

The edge of the perforated plate 70 is seated on the seating portion 31d, and is fixed to the upper end of the spacer support 21. The cooking object r is placed on the upper surface of the perforated plate 70, the lid 50 is closed, and an operation button (not shown) provided on the main body 60 is selected, whereby the cooking process of the cooking object r can be performed. That is, as the lower heating part 40a is operated, the inner container 10 is heated together with the heating water w stored in the water storage region c, and when the temperature of the heating water w is increased to a boiling point or higher, steam is generated.

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 lower end of the siphon tube 25 is immersed in the heated water w. Thereby, the vapor pressure of the water storage region c corresponding to the space between the surface of the heating water w and the lower surface of the separation plate 20 can be increased.

Specifically, when the steam pressure in the water storage region c increases, a pressure in the upper direction is applied to the lower surface of the separation plate 20. At this time, since the edge-side pad support portion 21 of the separation plate 20 is restricted by the restricting projection 37 and the bent extension portion 37a, the pad support portion 21 is prevented from being detached. Further, the pressure in the upper direction due to the steam in the water storage area c is accurately transmitted to the side e of the restriction protrusion 37 through the upper end portion of the packing support portion 21.

The radially outer end of the restricting projection 37 is connected to the radially inner end of the interlocking projection 36, and the interlocking projection 36 is disposed to be inclined upward as it gets closer to the radially outer side. Accordingly, the pressure transmitted to the side e of the regulating protrusion 37 is converted into a pressure in a lower direction by the seesaw movement using the upper end portion of the pad body portion 31 as the supporting point f, and thus can be transmitted to the interlocking protrusion 36.

At this time, the interlocking projection 36 rotates downward, and the radially outer end g of the interlocking projection 36, which is disposed upward from the upper end side supporting point f of the gasket main body 31, is pressed downward, so that the interlocking projection can be pressed against the inner periphery of the inner container 10.

Accordingly, as the steam pressure in the water storage region c increases, the contact force between the inner container 10 and the interlocking projection 36 increases, and thus the space between the separation plate 20 and the inner container 10 can be more accurately sealed.

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 opening 26 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 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 heating water w in the water storage area c may be raised to the cooking area b until the surface water level is lowered to a height corresponding to the lower end of the siphon tube 25. That is, when the water level of the water storage area c is reduced to a level lower than the height of the lower end of the siphon tube 25, the steam flows between the lower end of the siphon tube 25 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, only the heated water w stored in the upper portion of the siphon tube 25 from the lower end of the siphon tube 25 can be raised into the cooking area b. At this time, the length of the siphon tube 25 and the position of the stepped portion 11 supporting the separation plate 20 play a main parameter role when the heated water w is raised and lowered.

Preferably, the level difference part 11 is positioned so that a volume c2 of a usable water storage area corresponding to an upper outer side from a lower end edge of the siphon tube 25 in the water storage area c exceeds a sum of a volume c3 of the siphon tube 25 and a maximum cooking water volume b1 of the cooking area b.

In detail, the usable water storage area means an area corresponding to a space between a plane corresponding to a lower end of the siphon tube 25 and a lower surface of the separation plate 20, from an outer circumference of the siphon tube 25 to an inner circumference of the inner tub 10.

The maximum cooking water volume b1 is a volume from the upper surface of the separation plate 20 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 20 and the upper portion of the separation plate liner 30. Accordingly, when the inner container 10 is heated, the cooking object r can be completely immersed in the heated water w having a high temperature in a state where the lower end portion of the siphon tube 25 is immersed in the heated water w in the water storage region c.

Wherein the heated water w rising as the inner lid 50b covers the upper end opening of the inner container 10 is prevented from being scattered and discharged or external foreign materials are prevented from flowing into the cooking area b. Also, the communication state between the cooking area b and the external atmosphere can be maintained through the communication hole 52.

The separation plate 20 covers a lower portion of the cooking area b and is disposed to face the water storage area 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 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 heated water w in the cooking area b through the entire area of the separation plate 20.

At the same time, the upper side of the inner container 10 corresponding to the cooking area b may be heated by the side heating part 40 b. Accordingly, the heated water w in the cooking area b can be stably heated at a cooking temperature suitable for the cooking object r, and thus the heating efficiency and cooking quality of the product can be remarkably improved.

On the other hand, the rising heated water w is supplied to the cooking area b through the opening 26, and is filled along the upper surface of the separation plate 20 and the upper portion of the separation plate liner 30. In this case, heated water w passing through opening 26 can be distributed widely and rise in the area corresponding to perforated plate 70 in available space b2 between perforated plate 70 and separation plate 20, which is spaced upward from opening 26.

When the level of the heated water w in the usable space b2 rises to a level higher than the surface level of the perforated plate 70, the object to be cooked r can be immersed in the heated water w at a high temperature and cooked.

The mounting surface 70a of the perforated plate 70 is disposed to face the upper portion of the opening 26 and has an area exceeding the cross-sectional area of the opening 26. Further, the lowest water level of the cooking object r can be made uniform by the mounting surface 70 a. In this case, the minimum water level means the minimum water level of the heated water w in which the cooking object r is immersed in each part such as a central part adjacent to the opening 26 and a peripheral part spaced apart from the opening 26. That is, since the flat shape of the seating surface 70a allows each part of the object to be cooked r to be disposed in the same height range, when the water level of the heating water w is increased, the center part and the outer peripheral part of the object to be cooked r can be immersed and cooked at a uniform speed without variation.

Accordingly, the cooking deviation such as the dilution of the cooking object r in the center of the perforated plate 70 disposed opposite to the opening 26 is minimized, and the cooking object r can be cooked uniformly in each part, thereby improving the cooking quality of the product.

On the other hand, as shown in fig. 1 to 3b, when the cooking object r is immersed in the heated water w having a high temperature supplied to the cooking area b, a starch-structural substance such as pullulan is dissolved in the heated water w.

At this time, the remaining steam generated when the heating water w is heated, excluding a part of the steam pressure of the water storage area c, rises to the cooking area b along the siphon tube 25 in a bubble state. The air bubbles can flow to the cooking object r through the available space b 2.

The bubbles are widely dispersed over the entire area of perforated plate 70 by the flow of heated water w dispersed from available space b2, and pass through between the particles of cooking object r. Thereby, the particles of the object to be cooked r are finely vibrated by the kinetic energy of the bubbles, and the starch elution process can be promoted.

On the other hand, as shown in fig. 1 to 3c, when the power supply to the heating parts 40a and 40b is cut off, the vapor in the water storage area c is liquefied, and thus the vapor pressure in the water storage area c can be reduced.

When the steam pressure in the water storage area c is reduced to atmospheric pressure or less, the heated water w in the cooking area b is discharged into the water storage area c, and the eluted starch is separated from the cooking object r together with the heated water w.

At this time, the cooking object r is supported by a perforated plate 70 formed with the mesh 71, and is spaced upward from the separation plate 20 and the opening 26. Accordingly, the heated water w can vertically descend to the usable space b2 through the mesh 71 without passing through the center of the cooking object r disposed opposite to the opening 26.

Accordingly, since the path of the heated water w flowing inside the cooking object r is shortened, the amount of starch reabsorbed or reabsorbed by the cooking object r is minimized, thereby improving the starch separation efficiency.

The heated water w that has fallen down to the usable space b2 flows toward the opening 26 with the inclination of the drainage guide surface portion 22, and can be discharged to the water storage area c.

On the other hand, the electronic cooker 100 further includes a control unit 61, and the control unit 61 controls the power sources of the heating units 40a and 40b so that the water filled in the cooking area b is increased or decreased based on the steam pressure in the water storage area c, and the cooking object r is separated. The heating units 40a and 40b control the power supply according to the control unit 61 so that the water filled in the cooking area b is repeated.

That is, when the control unit 61 supplies power to the heating units 40a and 40b, the heating water w is heated and vaporized, thereby increasing the vapor pressure of the water storage region c. On the other hand, when the control unit 61 turns off the power supply to the heating units 40a and 40b, the vapor is liquefied, and the vapor pressure in the water storage area c is reduced.

At this time, the control unit 61 repeats the supply and interruption of the power to the heating parts 40a and 40b at a predetermined cycle, thereby repeating the process of supplying the heated water w to the cooking area b and discharging the supplied heated 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 through the repeated process.

However, it is preferable that the bottom of the inner container 10 be formed to be inclined downward as the outer region 19 of the central portion facing the siphon tube 25 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 which divides the receiving space of the inner vessel 10 into the upper and lower sides. Accordingly, the heated water w can be caused to flow into the cooking area b and the water storage area c by only the change in the steam pressure of the water storage area c through the heating parts 40a and 40b, and thus the starch of the cooking object r can be effectively separated.

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 object r can absorb sufficient water and be cooked, thereby improving the cooking quality of the product.

On the other hand, fig. 4 is a sectional view showing an electric cooker according to a second embodiment of the present invention, fig. 5a and 5b are perspective views showing a coupling process of a separation plate and a siphon tube in the electric cooker according to the second embodiment of the present invention, fig. 6 is a plan view showing a siphon tube gasket of the electric cooker according to the second embodiment of the present invention, fig. 7 is a sectional view showing the siphon tube gasket of the electric cooker according to the second embodiment of the present invention, and fig. 8a, 8b, 8c, 8d and 8e 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 8e, the electric cooker appliance 400 of the second embodiment includes a body 460, the above-mentioned cover 50, an inner container 410, a separation plate 420, a separation plate gasket 430, the above-mentioned perforated plate 70, a siphon 480, a pressure difference removing unit, and heating parts 440a, 440 b.

In this case, the second embodiment is the same as the first embodiment except for the partial structure of the separation plate 420 and the siphon tube 480. The basic configuration of the separator plate 420 is the same as that of the first embodiment except that it has a differential pressure removing means for removing the negative pressure and the positive pressure in the water storage area c. Thus, a detailed description of the same structure is omitted.

The main body 460, the control portion 461, the pad supporting portion 421, the binding groove portion 431c, the bent extending portion 437a, the upper surface portion 411a, and the outer peripheral region 419 shown in the drawings showing the second embodiment are substantially the same as the main body 60, the control portion 61, the pad supporting portion 21, the binding groove portion 431a, the bent extending portion 37a, the upper surface portion 11a, and the outer peripheral region 19 shown in the drawings showing the first embodiment, and thus detailed description thereof will be omitted.

The body 460 has a heating space d formed therein, and the inner container 410 has a container type with an open upper portion and a receiving space formed therein, and is detachably mounted to the heating space d. On the other hand, the engaging portion is formed on the inner periphery of the inner container 410, and in the present embodiment, the case where the engaging portion is provided by the stepped portion 411 is shown and described as an example.

The separation plate 420 is detachably mounted inside the inner container 410. In this case, the receiving space of the inner container 410 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 420.

Preferably, an opening 426 is formed through the central portion of the upper surface of the separation plate 420, and a drainage guide surface portion 422 having a surface height that increases toward the outside in the radial direction along the outer region of the opening 426 is formed. In this case, in order to reinforce the strength, a plurality of concave and convex portions 423 may be formed in the radial direction of the separation plate 420, and the drainage inducing surface portion 422 may be formed along the concave and convex portions 423.

The siphon tube 480 is hollow at the center of the lower surface of the separation plate 420 so as to be immersed in the heated water w in the water storage region c. Although the siphon tube 480 may be integrally formed on the lower surface of the separation plate 420, the present embodiment will be described by taking as an example a case where the siphon tube 480 is attached to and detached from the opening 426.

At this time, referring to fig. 5a to 5b, the siphon tube 480 preferably includes a hollow tube main body 480a having an outer diameter smaller than the inner diameter of the opening 426. Further, the siphon tube 480 preferably includes a coupling guide blade 481, and the coupling guide blade 481 is provided to protrude outward in the radial direction so as to be larger than the inner diameter of the opening 426 at the upper end edge of the tube main body 480 a.

Accordingly, the tube main body 480a is disposed below the separation plate 420 through the opening 426, and the coupling guide blade 481 is locked to an edge surface 426a of the opening 426 to fix the siphon tube 480.

In the siphon tube 480, the length from the coupling guide blade 481 to the lower end of the tube main body 480a is preferably smaller than the distance from the opening 426 to the bottom of the inner tube 410. Accordingly, the heated water w can flow between the lower end of the tube main body 480a and the bottom of the inner container 410 in a state where the separation plate 420 is supported by the stepped portion 411.

That is, the heated water w in the water storage area c can flow into the water storage area c through the space between the lower end of the tube main body 480a and the bottom of the inner container 410, which is hollow in the siphon tube 480.

On the other hand, the differential pressure removing unit removes the negative pressure and the positive pressure of the water storage region c when the separation plate 420 is attached and detached. In detail, the separation plate 420 may be installed inside the inner bladder 410 in a state where the water storage region c is filled with the heating water w. The pressure difference removing means may remove the pressure difference between the water storage region c and the cooking region b when the separation plate 420 is separated from the inner container 410.

Preferably, the differential pressure removing unit is implemented as a siphon tube gasket 490, and the siphon tube gasket 490 is attached to an outer circumference of the siphon tube 480 so as to selectively seal an edge of the opening 426 when the siphon tube 480 is attached and detached.

That is, the siphon gasket 490 is installed at a lower portion of the coupling guide 481, and seals a gap between an edge of the opening 426 and an outer circumference of the siphon tube 480 as it is closely attached to the separation plate 420. On the other hand, when the siphon liner 490 is separated from the separation plate 420, the gap between the edge of the opening 426 and the outer circumference of the siphon tube 480 may be opened.

Accordingly, when the siphon tube 480 and the siphon tube packing 490 are attached and detached, the lower surface side water storage area c of the separation plate 420 and the upper surface side cooking area b of the separation plate 420 can be selectively communicated.

Specifically, as shown in fig. 4 to 8a, when the inner container 410 is filled with water, the separation plate 420 coupled to the separation plate gasket 430 at the gasket support portion 421 is installed inside the inner container 410. The separator pad 430 may include a pad body 431, an insertion guide 432, a restriction protrusion 437, an interlocking protrusion 436, and auxiliary sealing protrusions 431a and 431 b.

At this time, when the siphon liner 490 is separated, even in a state where the separation plate 420 and the inner periphery of the inner liner 410 are sealed by the separation plate liner 430, air between the surface of the heating water w and the lower surface of the separation plate 420 can flow toward the upper surface of the separation plate 420 through the opening 426.

Accordingly, the air between the surface of the heated water w and the lower surface of the separation plate 420 is prevented from being compressed to generate a positive pressure, thereby allowing the separation plate 420 to be inserted gently.

When the edge of the separation plate 420 and the separation plate gasket 430 are seated on the stepped portion 411 and the installation position of the separation plate 420 is fixed, the siphon pipe gasket 490 and the siphon pipe 480 are installed in the opening 426.

Accordingly, the lower end of the siphon tube 480 is immersed in water, and the air flow between the cooking area b and the water storage area c is prevented as the space between the cooking area b and the water storage area c is sealed.

On the other hand, referring to fig. 6 to 7, the siphon gasket 490 may be made of a sealing material, such as silicon, which is elastic and resistant to high temperature, and preferably includes a base portion 490a and a sealing tube portion 490 b.

In detail, the base portion 490a is implemented as an elliptical member having an outer diameter larger than the inner diameter of the opening 426, and a mounting hole 491 having an inner diameter corresponding to the outer diameter of the tube main body 480a is formed to penetrate through the center portion. Thus, the tube main body 480a can be inserted into the mounting hole 491, and the base portion 490a can be set on the edge surface 426a of the opening 426 to support the lower surface portion of the coupling guide blade 481.

Among them, the coupling guide blades 481 are preferably provided in the shape of a circular arc divided into one or more circular arcs and arranged at predetermined intervals in the circumferential direction.

At this time, coupling guide protrusions 493 are formed on the upper surface of the base portion 490a so as to protrude along positions corresponding to the spaces between the coupling guide blades 481. Also, it is preferable that the coupling guide protrusion 493 be formed in a size corresponding to an arc angle between ends of the coupling guide vanes 481 arranged to be spaced apart from each other.

Thus, along the space between the above-described coupling guide protrusions 493, it can be inserted by guiding the coupling guide vanes 481. Further, both circumferential ends of the coupling guide vane 481 are supported by both circumferential ends of the coupling guide projection 493, thereby preventing the rotational flow of the siphon tube 480.

The sealing tube 490b has an outer diameter corresponding to the inner diameter of the opening 426, and is formed to protrude downward along the edge of the mounting hole 491 so as to have an inner diameter corresponding to the outer diameter of the tube main body 480 a.

Thus, the sealing tube 490b is inserted into the opening 426 to seal between the outer circumference of the tube main body 480a and the opening 426.

At this time, a pressing projection 494 is projected inward in the radial direction on the inner periphery of the sealing tube portion 490b so as to have an inner diameter smaller than the outer diameter of the tube main body portion 480 a. The radially inner end of the pressing projection 494 is pressed against the outer periphery of the pipe main body 480a inserted into the mounting hole 491, so that the siphon 480 and the mounting hole 491 can be more accurately sealed.

Further, an engaging projection 495 is provided on the outer periphery of the sealing tube portion 490b so as to protrude outward in the radial direction so as to have an outer diameter larger than the inner diameter of the opening 426.

Accordingly, when the siphon tube 480 and the siphon tube gasket 490 attached to the outer periphery of the siphon tube 480 are pushed into the opening 426, the locking projection 495 elastically locks the lower end edge of the opening 426. Therefore, the siphon liner 490 and the siphon tube 480 may be defined in the opening 426.

On the other hand, as shown in fig. 4 to 8b, when the siphon tube 480 is coupled to the opening 426, the perforated plate 70 is attached to the upper portion of the separation plate 420.

In this case, the perforated plate 70 may cover the hollow upper end of the siphon tube 480 so as to restrict the downward flow of the cooking object r placed on the upper surface and to allow the heated water w to flow back and forth between the cooking area b and the water storage area c.

On the other hand, the cooking object r is placed on the upper surface of the perforated plate 70, the lid 50 is closed, and an operation button (not shown) provided on the main body 460 is selected, thereby cooking the cooking object r.

At this time, the steam pressure of the water storage region c is increased in the heating parts 440a and 440b, and the inner bladder 410 is heated such that the heating water w is supplied to the cooking region b along the siphon tube 480.

Further, it is preferable that the heating parts 440a and 440b include: a lower heating part 440a disposed at a lower portion of the heating space d to heat a bottom of the inner container 410; the side heating part 440b is disposed on an outer side surface of the heating space d to heat the side surface of the inner container 410.

In detail, as the lower heating part 440a is operated, the steam is heated together with the inner bladder 410 and the heating water w stored in the water storage region c, and when the temperature of the heating water w is increased to a boiling point or higher, the steam is generated.

The space between the edge of the separation plate 420 and the inner container 410 is sealed by the separation plate gasket 430, and the space between the opening 426 and the siphon tube 480 is sealed by the siphon tube gasket 490. At this time, since the lower end portion of the siphon tube 480 is immersed in the heated water w, the steam pressure of the water storage area c is increased by the steam generated on the surface of the heated water w.

On the contrary, the cooking area b, which is in communication with the atmosphere through the through portion 50c of the cover 50, maintains the atmospheric pressure. At this time, when the vapor pressure of the water storage area c is increased to the atmospheric pressure or more, a pressure difference between the water storage area c and the cooking area b is generated. Therefore, the heated water w in the water storage area c is raised through the hollow inside of the siphon tube 480 by the pressure difference, and thus can be supplied to the cooking area b.

At this time, the pressure in the upper direction applied to the lower surface of the separation plate 420 by the steam in the water storage area c is transmitted to the restriction protrusion 437 through the upper end of the pad support 421. Accordingly, the pressure transmitted to the restricting protrusion 437 is converted into a downward pressure by the seesaw movement using the upper end of the pad body 431 as a supporting point, and thus can be transmitted to the interlocking protrusion 436.

At this time, the interlocking protrusions 436 rotate downward and press the inner circumference of the inner bladder 410, so that the steam pressure of the water storage region c increases, and the contact force between the inner bladder 410 and the interlocking protrusions 436 can be increased.

On the other hand, as shown in fig. 4 to 8c, when the steam pressure of the water storage region c increases, the heating water w rises along the siphon tube 480 and is supplied to the cooking region b, thereby filling along the upper surface of the separation plate 420 and the upper portion of the separation plate liner 430.

At this time, the heated water w can be widely distributed over the area corresponding to the perforated plate 70 and can be raised through the available space b 2. When the level of the heated water w in the usable space b2 rises to a level higher than the surface level of the perforated plate 70, the object to be cooked r can be immersed in the heated water w at a high temperature and cooked.

Further, since the flat shape of the seating surface portion 70a allows each portion of the object to be cooked to be disposed in the same height range, when the water level of the heating water w is increased, the center portion and the outer peripheral portion of the object to be cooked r can be immersed and cooked at a uniform speed without variation. Accordingly, the cooking deviation such as the transformation of the cooking object r into olefin in the center of the perforated plate 70 disposed opposite to the siphon tube 480 is minimized, and the cooking object r can be cooked uniformly in each portion, thereby improving the cooking quality of the product.

On the other hand, the above-mentioned electronic cooker 400 may include the above-mentioned control part 461 that controls the power of the above-mentioned heating parts 440a, 440 b. The heating units 440a and 440b control power supply according to the control unit 461, so that water filling into the cooking area b is repeated.

As shown in fig. 4 to 8d, when the power of the heating parts 440a and 440b is cut off, the vapor of the water storage area c is liquefied, thereby reducing the vapor pressure of the water storage area c.

When the steam pressure in the water storage area c is reduced to atmospheric pressure or less, the heated water w in the cooking area b is discharged into the water storage area c, and the eluted starch can be separated from the cooking object r together with the heated water w.

At this time, the heating water w passes through the mesh 71 and is vertically lowered into the usable space b2 without passing through the center of the cooking object r disposed opposite to the siphon 480. Accordingly, since the path of the heated water w flowing inside the cooking object r is shortened, the amount of starch reabsorbed or reabsorbed by the cooking object r is minimized, thereby improving the starch separation efficiency.

The heated water w that has fallen down to the usable space b2 flows toward the siphon tube 480 with the inclination of the drainage guide surface 422, and can be discharged to the water storage area c.

On the other hand, referring to fig. 4 to 8e, when the cooking process of the object to be cooked r is finished, the object to be cooked r is taken out and the perforated plate 70 is separated.

At this time, as shown in fig. 8a, the siphon tube gasket 490 and the siphon tube 480 are separated from the opening 426, and thus the air in the cooking area b flows into the water storage area c on the lower surface side of the separation plate 420. Accordingly, the vacuum pressure generated by the liquefaction of the vapor in the water storage region c can be removed, and the separation plate 420 can be easily separated without being affected by the vacuum pressure.

A clamp portion 492 is formed by extending the edge of the base portion 490a, and the siphon tube gasket 490 and the siphon tube 480 are separated from the opening 426 by pulling the clamp portion 492. At this time, since the clamp portion 492 is formed in a portion corresponding to the major axis of the ellipse, the amount of elastic deformation of the base portion 490a can be increased during stretching, and thus the siphon gasket 490 can be easily separated.

On the other hand, fig. 9 is a sectional view showing an electric cooker according to a third embodiment of the present invention.

In the third embodiment, the configuration of the basic electric cooker 200 is substantially the same as that of the above-described electric cooker 400 of the above-described second embodiment except that the siphon tube 225 is formed integrally with the separation plate 220 in the inner container 210, and the differential pressure removing means is realized as an opening/closing cover 290 that penetrates through the differential pressure removing hole 227 formed in the separation plate 220. Thus, a detailed description of the same structure is omitted.

As shown in fig. 9, in the electric cooker 200, the siphon tube 225 is integrally formed at the lower surface of the separation plate 220.

In this case, it is preferable that the siphon tube 225 is implemented as an additional member, and may be coupled along an edge of the opening 226, and a connection portion between the separation plate 220 and the siphon tube 225 is sealed.

A differential pressure removing hole 227 is formed through the separating plate 220 at a position radially outward from the edge of the opening 226. In this case, the differential pressure removing means is preferably implemented as an opening/closing cover 290 that is detachably attached to the differential pressure removing hole 227. A clamp portion is formed by extending the edge of the opening/closing cover 290, and the opening/closing cover 290 can be separated from the separation plate 220 by pulling the clamp portion.

Accordingly, the opening/closing cover 290 is separated to remove a pressure difference between the water storage region c and the cooking region b, so that the separation plate 220 can be easily attached and detached.

On the other hand, fig. 10 is a sectional view showing an electric cooker according to a fourth embodiment of the present invention.

In the fourth embodiment, the basic configuration of the electric cooker 300 except that the differential pressure removing unit is integrally provided at the upper end portion of the siphon tube 380 in the inner container 310 is substantially the same as that of the electric cooker 400 of the second embodiment, and thus detailed description of the same configuration is omitted.

As shown in fig. 10, the siphon tube 380 includes a tube body 380a having an outer diameter corresponding to the inner diameter of the opening 326, and a seal 380b provided at an outer peripheral upper end of the tube body 380 a. Among them, the siphon tube 380 is preferably made of a sealing material such as silicon having a predetermined strength and elasticity.

The sealing portion 380b may selectively seal the opening 326 when the siphon tube 380 is attached and detached. At this time, the above-mentioned sealing portion 380b preferably includes a seating sealing protrusion 381 and a catching sealing protrusion 382.

Specifically, the seating seal projection 381 is formed to be protruded from an outer peripheral upper end portion of the tube main body 380a so as to be seated on an edge surface of the opening portion 326, and has an outer diameter larger than an inner diameter of the opening portion 326. The seating seal 381 has a clamp 383 formed on an edge thereof for clamping when the siphon tube 380 is attached and detached.

The locking seal projection 382 is formed to protrude from the outer periphery of the tube main body 380a at a distance from the lower portion of the seating seal projection 381, and has an outer diameter larger than the inner diameter of the opening 326. In this case, it is preferable that the interval from the upper surface of the locking seal projection 382 to the lower surface of the seating seal projection 381 be set to be equal to or less than the thickness of the edge of the opening 326 in the vertical direction.

Accordingly, the outer periphery of the tube main body 380a is in close contact with the opening 326, and the upper surface of the locking seal projection 382 and the lower surface of the seating seal projection 381 are in close contact with each other so as to cover the upper and lower edge surfaces of the opening 326. That is, the opening 326 can be stably sealed by the tube body 380a and the sealing portion 380 b.

When the clamp 383 is pulled, the siphon tube 380 is separated from the opening 326, and the pressure difference between the water storage area c and the cooking area b can be removed, so that the separation plate 320 can be easily detached.

In this way, the pressure difference removing means allows the water storage region c on the lower surface side and the cooking region b on the upper surface side of the separating plate 320 to selectively communicate with each other, thereby removing the pressure difference between the two regions. Accordingly, the force required for assembling and disassembling the separation plate 320 is reduced, and the assembling convenience of the product can be improved.

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 (18)

1. An electric cooking appliance, comprising:

an inner container, which forms an accommodating space inside and forms a step part by narrowing the inner periphery of the lower part towards the inner side in the radial direction;

a separation plate which is detachably mounted in the inner container and is supported by the step part 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;

a separation plate liner installed at an edge of the separation plate in such a manner as to seal between the separation plate and the inner container; and

a heating part for heating the inner container to increase the steam pressure of the water storage area and supply the heated water to the cooking area along the siphon pipe,

the separation plate is formed into a minimum inner diameter part with an outer diameter smaller than the inner diameter of the inner container at the upper side and exceeding the step part so as not to be in direct contact with the inner periphery of the inner container at the upper side, the accommodating space of the inner container is divided into an upper cooking area for accommodating cooking objects and a lower water storage area for storing heated water according to the separation plate arranged in the inner container,

setting the position of the step part so that the volume of the available water storage area corresponding to the upper outer side from the lower end edge of the siphon pipe in the water storage area exceeds the sum of the volume of the siphon pipe and the maximum volume of the water for cooking in the cooking area,

the usable water storage region is a region corresponding to a region between an outer circumference of the siphon tube and an inner circumference of the inner container in a region between a plane corresponding to a lower end of the siphon tube and a lower surface of the separation plate,

the maximum volume of water for cooking is a volume from the upper surface of the separation plate to a water level at which the object to be cooked corresponding to the maximum amount of rice to be cooked in the cooking area is completely immersed.

2. An electric cooking appliance as claimed in claim 1, wherein said separating plate gasket comprises:

an insertion guide part formed at the lower end of the separating plate pad and inclined inward in the radial direction toward the lower side,

a pad body part formed to extend in the vertical direction so as to be in surface contact with a pad support part formed to extend upward at the edge of the separation plate,

and a restricting projection projecting radially inward from an inner periphery of the pad body portion so as to restrict an upper end portion of the pad support portion.

3. An electric cooking appliance according to claim 2,

the upper end of the pad support part is folded to the outside of the radius direction to form a binding end,

a binding groove part inserted into the binding end is formed on the inner periphery of the gasket body part.

4. The electric cooker according to claim 2, wherein a curved extension portion extending downward to support an inner circumference of the gasket support portion is formed at a radially inner end portion of the restricting protrusion.

5. An electric cooking appliance according to claim 2,

a perforated plate for placing the cooking object is installed on the upper part of the separation plate,

and a mounting part for mounting the edge of the perforated plate is formed on the upper part of the limiting bulge.

6. The electric cooker of claim 2, wherein the insertion-inducing portion is combined with a lower end portion of the rim of the separation plate.

7. An electric cooking appliance as claimed in claim 1, wherein an auxiliary seal projection is provided on the outer periphery of the separation plate gasket so as to be in close contact with the inner periphery of the inner container and project outward in the radial direction.

8. The electric cooking appliance of claim 7, wherein the auxiliary sealing protrusion is formed in a plurality of stages so as to be spaced apart from each other in an up-down direction, and a protruding length of the protrusion in an outer side in a radius direction is increased as it is closer to an upper side end.

9. An electric cooking appliance according to claim 1,

the separating plate liner is provided with a limiting bulge protruding towards the inner side of the radius direction in a mode of limiting the upper end part of the separating plate on the inner periphery, and is provided with a linkage bulge connected with the limiting bulge in a protruding mode on the outer periphery,

the interlocking projection rotates downwards when the upper part of the limiting projection is pressurized, and is formed to incline upwards towards the outer side in the radial direction in a manner of closely pressing with the inner periphery of the inner container.

10. An electric cooking appliance according to claim 1,

an opening is formed at a central portion of the separation plate, and a differential pressure removing unit is provided to remove negative and positive pressures in the water storage region when the separation plate is attached and detached.

11. An electric cooking appliance according to claim 10,

the siphon tube is detachable from the opening portion,

the differential pressure removing unit is implemented as a siphon gasket mounted on an outer circumference of the siphon tube so as to selectively seal an edge of the opening portion when the siphon tube is attached and detached.

12. An electric cooking appliance according to claim 11,

the siphon liner comprises:

a base body part which is arranged on the upper surface part of the separation plate and is provided with a mounting hole at the central part,

and a sealing pipe portion which is provided so as to be inserted into the opening portion and is projected downward along the edge of the mounting hole.

13. The electric cooking appliance according to claim 12, wherein a locking protrusion is formed on an outer periphery of the sealing pipe portion so as to be elastically locked to a lower end edge of the opening portion and protrude outward in a radial direction.

14. The electric cooking appliance according to claim 12, wherein a pressing projection is formed on an inner periphery of the sealing pipe portion so as to be projected inward in a radial direction so as to press an outer periphery of the siphon pipe.

15. An electric cooking appliance according to claim 12,

a combination guide vane is formed on the upper end periphery of the siphon tube and is projected outwards in the radial direction,

a coupling guide protrusion is formed on the upper surface of the base portion in a protruding manner so as to guide a coupling position of the coupling guide blade.

16. The electric cooking appliance according to claim 12, wherein a clamp portion is formed to be extended on a side of an edge of the base portion.

17. An electric cooking appliance according to claim 10,

the siphon tube is detachable from the opening portion,

the differential pressure removing means is a sealing portion integrally provided at an upper end portion of the siphon tube and selectively sealing the opening portion when the siphon tube is attached and detached.

18. An electric cooking appliance according to claim 10,

the siphon pipe is integrally provided on the lower surface of the separation plate,

the differential pressure removing unit is an opening/closing cover that is detachably attached to a differential pressure removing hole formed through the separation plate.

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