KR980008125A - Electric pressure cooker - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric pressure cooker, and more particularly, to an electric pressure cooker, more particularly, to an electric pressure cooker having an inner cylinder deformed such that a volume of the inner cylinder becomes larger, To an electric pressure cooker for preventing damage.

The present invention relates to a rice cooker main body of a hollow body to which a lid is rotatably coupled; An inner cylinder which is built in the main body and contains rice having one side opened; A lid coupled to the opening surface of the inner cylinder when the lid is closed to the body, the lid being movably coupled to the bottom surface of the lid; A sealing member coupled to the lid to prevent leakage of steam generated during cooking to the outside of the inner cylinder; A device connected to a control unit provided at a proper position of the main body to hermetically couple and separate the lid and the inner tube; A steam discharging device installed so as to penetrate through the cover and the lid and opened when the pressure of the steam generated at cooking becomes a certain pressure to discharge the steam to the outside of the main body; And means for reducing the pressure of the inner cylinder by moving the lid to the upper side of the lid when the inside of the inner cylinder becomes a certain pressure or more because the amount of the steam generated between the lid and the lid is larger than the amount of steam discharged to the steam discharging device .

Description

Electric pressure cooker

Since this is a trivial issue, I did not include the contents of the text.

1 is a perspective view of a conventional electric pressure cooker;

2 is a sectional view of Fig. 2; Fig.

3 is a perspective view of an electric pressure cooker according to the present invention.

4 is an exploded perspective view of a lid portion of an electric pressure cooker according to the present invention.

FIG. 5 is a sectional view showing an operation state of an electric pressure cooker according to the present invention, in which an end portion of an engaging member is located outside the engaging portion of an inner cylinder.

6 shows the operation of the electric pressure cooker according to the present invention. Sectional view showing that the end portion of the engaging member is located inside the engaging portion of the inner tube.

7 is a sectional view showing the operation of the electric pressure cooker according to the present invention, wherein the lid is lifted by the pressure of the steam.

DESCRIPTION OF THE REFERENCE NUMERALS

50: inner tube 55: steam discharging device

60: lid 65: guide member

70: lid 72: engaging projection

73: guide projection 81: motor

82: rotating member 83: connecting link

85: engaging member 100:

DETAILED DESCRIPTION OF THE INVENTION [

[Object of the invention]

[TECHNICAL FIELD OF THE INVENTION AND RELATED ART OF THE SAME]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric pressure cooker, and more particularly, to an electric pressure cooker, more particularly, to an electric pressure cooker having an inner cylinder deformed such that a volume of the inner cylinder becomes larger, To an electric pressure cooker for preventing damage.

In the old cooking method where rice was put into the container and the amount of water was adjusted by guessing and cooking by firepower, the container with the water level indicated by the amount of rice was built in the body and cooked using electricity The electric rice cooker with the

A pressure cooker was developed in which the boiling point of water was different according to the pressure, and the pressure of the container was raised during cooking. The higher the percentage of starchy starch in the rice, the higher the sweetness, and the higher the rate of the alpha starch is, the higher the water temperature is closer to 100 ℃ and the higher the water temperature is above 100 ℃. That is, as the pressure of the container increases, the boiling point of the water becomes higher, so the rice in the container becomes more alpha, and the taste of the rice becomes better.

As a means of increasing the pressure in the container, the container containing the rice is sealed at the time of cooking and the vapor generated during cooking is prevented from leaking to a certain pressure, so that the inside of the container becomes high pressure by the steam.

A conventional electric pressure cooker (Korean Utility Model Publication No. 90-11191) for implementing this method will be described with reference to Figs. 1 and 2. Fig. A pot body 1 is built in a body 10 of a hollow body and a heat plate 8 for heating the pot body is provided on the bottom of the hollow portion. A lid 9 is rotatably coupled to the main body, and a lid 7 is coupled to the bottom surface of the lid 9 for sealingly connecting the pot body. When the lid covers the main body, the joining stones 7a of the lid are inserted into the incising grooves 2b, 4b of the cooking pot body 1 and the engaging wheel 4. Thereafter, when the handle 5 is rotated, the pot lid and the pot body are separated. The lid 9 is provided with a steam outlet 9a for preventing the inside of the closed pot body from becoming a certain pressure or higher due to steam generated during cooking. Reference numeral 3 denotes a support member for elastically supporting the heat plate 8, and 8a is a sensor for sensing the temperature of the pot body.

However, in the conventional electric pressure cooker as described above, there is a disadvantage that the heat of the heat plate can not be transferred to the pot body because the pot body is deformed or the contact between the heat plate and the pot body is poor. In detail, when the pot body is not built in the main body, the heating plate is moved upward by the spring of the support member. And, when the pot body is built in the body and the cover is covered, the heat plate is moved downward by the load of the pot body. When the cover is covered and cooked, steam is generated. When the pressure of the inside of the pot body becomes constant due to the steam, the steam is discharged to the steam discharging device. However, if the amount of steam generated is larger than the amount of steam to be discharged, the inside of the pot body becomes higher in pressure. Then, the pot body is moved to the lower side, and the pot lid is moved upward, so that the heat plate is subjected to a load. When the above operation is continuously repeated, the heat plate and the pot body are not accurately contacted with each other, and the pot body is deformed by the pressure of the steam.

[Technical Problem]

It is an object of the present invention to solve the above-mentioned problems, and an object of the present invention is to provide a method and an apparatus for reducing the pressure of a steam by increasing the volume of an inner cylinder when a sealed inner cylinder containing rice by steam generated during cooking, In which the load caused by the heating element is not applied to the heat plate through the inner tube, and an electric pressure cooker capable of preventing the heating plate from being damaged. In addition, it is an object of the present invention to provide an electric pressure cooker capable of preventing the inner cylinder from being deformed because the inner cylinder pressure is reduced when the inner cylinder volume is increased.

[Structure and operation of the invention]

According to an aspect of the present invention, there is provided a rice cooker comprising: a rice cooker body of a hollow body to which a lid is rotatably coupled; An inner cylinder which is built in the main body and contains rice having one side opened; A lid coupled to the opening surface of the inner cylinder when the lid is closed to the body, the lid being movably coupled to the bottom surface of the lid; A sealing member coupled to the lid to prevent leakage of steam generated during cooking to the outside of the inner cylinder; A device connected to a control unit provided at a proper position of the main body to hermetically couple and separate the lid and the inner tube; A steam discharging device installed so as to penetrate through the cover and the lid and opened when the pressure of the steam generated at cooking becomes a certain pressure to discharge the steam to the outside of the main body; Means for reducing the pressure of the inner cylinder by moving to the upper side of the cover of the lid when the inner pressure of the inner cylinder becomes higher than a predetermined pressure due to the amount of steam generated between the lid and the lid, Respectively.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of an electric pressure cooker according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 3, the rice cooker according to the present invention is provided with a rice cooker main body 100 of a hollow body having an opened upper surface. A control unit 101 is provided on one side of the main body, and a wire unit 102 is connected to the control unit 101. A heat plate 103 is provided on a bottom surface of the hollow portion of the main body so as to be heated when current is supplied through the power source portion. In the hollow portion of the main body, an inner cylinder 50 containing rice to be in contact with the heat plate 103 is built in. The inner cylinder is formed with an engaging surface 51 whose upper surface is open and whose opening is bent outward.

The main body 100 is provided with a lid 60 which is rotatably coupled to cover the hollow portion of the main body. A lid 70 is vertically coupled to the bottom surface of the lid 60. The lid 70 is engaged with the opening of the inner cylinder 50 to seal the inner cylinder when the lid 60 covers the hollow portion of the body. An insertion groove 71 (see FIG. 5) is formed at the edge of the lid 70, and a sealing member 978 is coupled to the insertion groove 71. The sealing member 78 contacts the inner surface of the inner cylinder to prevent steam generated during cooking from leaking to the outside of the inner cylinder. Reference numeral 85 is an engaging member to be described later.

On the upper side of the lid, there is provided a device 80 for further tightly sealing and separating the lid, which will be described with reference to Fig.

A motor 81 driven by a command of the control unit 101 is provided on the bottom surface of the lid 60 and a rotary member 82 rotated by a motor is provided on the top surface of the lid 70. The second coupling cylinder 82b is connected to the bottom of the rotary member 82 and the guide passage 82c is communicated with the second coupling cylinder 82b. And a portion positioned far away from a portion positioned closer to the center. A motor is connected to the first coupling cylinder 82a and a coupling protrusion 72 to be described later is inserted into the second coupling cylinder 82b.

An engaging projection 72 is formed on the upper surface of the lid 70 to be engaged with the second coupling cylinder 82b. One end of a connecting link 83 for converting the rotational motion of the rotating member into a linear motion is inserted into the guide path 82c of the rotating member 82 coupled to the engaging projection 72, And one side of the latching member 85 having the bent portion 85a is coupled to the other end.

When the rotary member 82 is rotated by the rotation of the motor 81, the connection link is located close to the second coupling cylinder 82b side by the guide passage 82c and is located far away. The engaging member 85 coupled to the connecting link 83 linearly reciprocates and is engaged with and separated from the engaging surface 51 of the inner tube. Reference numeral 87 denotes a supporting member for supporting the engaging member 85 to make an accurate linear reciprocating motion.

The cover 60 and the lid 70 are provided with a steam discharging device 55 which is opened when the pressure of the inner barrel is higher than a predetermined pressure due to the steam generated during cooking, . If the amount of steam generated is greater than the amount of steam discharged to the steam discharging device 55, the pressure inside the inner cylinder is further increased and becomes dangerous.

Even if the steam is discharged through the steam discharging device between the lid 60 and the lid 70 according to the present invention, when the pressure of the inner cylinder 50 is further increased, the lid is moved to the upper side of the lid So as to reduce the pressure of the inner cylinder. When the volume of the inner cylinder is increased, the pressure of the inner cylinder is reduced. Then, since the load of the inner cylinder acting on the heat plate 103 is also reduced by the pressure of the steam, the heat plate is not damaged and the inner cylinder is not deformed.

The means is provided with a guide protrusion 73 provided on the upper surface of the lid 70, a guide member 65 formed on the bottom surface of the lid 60 and an elastic member 68. In detail, a plurality of guide protrusions 73 are formed on the upper surface of the lid 70. The cover 60 is provided at its bottom surface with a cylindrical guide member 65 into which the guide protrusion 73 is inserted.

The guide member (65) guides the guide protrusion (73) to move up and down accurately. The elastic member 86 is wound on the guide protrusion 73 so that the elastic member 68 can be moved in a direction in which the lid passes through the through- And the lid 70 raised by the pressure of the steam returns to the initial state. A plurality of latching protrusions 64 are formed on the bottom surface of the lid 60. The latching protrusion 64 is formed to be in contact with the rim of the lid 70 to prevent the lid from flowing to the left and right sides of the lid.

The operation of the electric pressure cooker according to the present invention having the above structure will be described.

5, when the inner tube 50 is inserted into the main body 100 and the main body is covered with the lid 60, the end of the latching member 85 is positioned outside the latching surface 51 of the inner tube Lt; / RTI > When the motor is driven, the rotary member is rotated, whereby the connection link 83 is moved to the second coupling cylinder 82b side. Then, the end portion of the engaging member is positioned inside the engaging surface of the inner tube as shown in Fig. Thereafter, when the control unit 101 is operated to cook, steam is generated in the inner cylinder. When the pressure of the inner cylinder due to the steam becomes equal to or higher than a predetermined pressure, the steam discharging device 55 is opened to discharge the steam. If the amount of generated steam is larger than the amount of discharged steam, the pressure of the inner cylinder is increased even if the steam is discharged through the steam discharging device. However, since the lid 70 according to the present invention is moved toward the lid 60 by the pressure of the steam as shown in Fig. 7, the volume of the inner cylinder is increased. At this time, the engaging member 85 is caught by the engaging surface 51 of the inner tube. Therefore, the pressure of the inner tube is lowered, the inner tube is not deformed, and the load due to the inner tube is not applied to the soleplate, so the soleplate is not damaged.

[Effects of the Invention]

As described above, in the electric pressure cooker according to the present invention, the volume of the inner cylinder increases when the inside of the inner cylinder becomes a certain pressure or more due to the steam generated during cooking. Therefore, there is a feature that the heat plate is not damaged because the load of the inner tube due to the pressure of the steam does not act on the heat plate. Further, when the volume of the inner cylinder is increased, the pressure of the inner cylinder is reduced, so that the inner cylinder is not deformed.

Claims (3)

A rice cooker main body 100 of a hollow body to which a lid 60 is rotatably coupled; An inner cylinder (50) which is built in the main body (100) and contains rice having one side opened; A lid 70 coupled to the opening surface of the inner tube 50 when the lid 60 is closed to the main body so as to be fluidly connected to the bottom surface of the lid 60; A sealing member 78 coupled to the lid 70 to prevent leakage of steam generated during cooking to the outside of the inner cylinder; An apparatus 80 connected to the control unit 101 provided at a proper position of the main body 100 to hermetically couple and separate the lid 70 and the inner cylinder 50; A steam discharging device 55 penetrating the lid 60 and the lid 70 to open the steam when the pressure of the steam generated when cooking is a certain pressure to discharge the steam to the outside of the main body; When the inner pressure of the inner cylinder 50 becomes equal to or higher than a predetermined pressure due to a large amount of steam generated between the lid 60 and the lid 70 than the amount of steam discharged to the steam discharging device 55, And means for reducing the pressure of the inner cylinder by moving the inner pressure of the inner pressure cooker. Said means comprising: A guide protrusion 73 provided on the upper surface of the lid 70 and a guide member 65 provided on the bottom surface of the lid 60 for guiding the movement of the lid up and down by the pressure of the steam to insert the guide protrusion 73 , And an elastic member (68) provided between the guide projection (73) and the guide member (65) for returning the lid raised by the pressure of the steam to the initial state. Wherein an engaging protrusion (64) is formed on the bottom surface of the lid (60) to prevent the lid from moving to the left and right sides of the lid by contacting the rim of the lid (70). ※ Note: It is disclosed by the contents of the first application.