KR101362287B1 - Electronic pressure rice cooker - Google Patents

Abstract

The present invention relates to an electric pressure cooker, and more particularly, a main body case in which a heater is provided therein and an open top, an inner pot having a plurality of flanges provided therein, which is settled inside the main body case, and the main body. An electric pressure cooker having a lid assembly hinged to a case and disposed to cover an upper portion of an open body case, the lid assembly including an outer cover installed with a rotatable handle.
The inner pot, the tapered inclined surface is formed on the upper edge, the lid assembly, the inner cover is rotated by the handle, the engaging portion is formed on the flange portion of the inner pot is formed on the edge; A sealing member disposed to cross the upper portion of the inner pot so as to seal the inner pot, and a sealing member having a shape corresponding to the tapered inclined surface on a lower surface of the inner pot, the sealing member made of a metal material; And a driving means coupled to the sealing member and the inner cover, respectively, and driven by electricity to move the inner cover and the sealing member in a direction away from or in proximity to each other.

Description

Electronic pressure rice cooker

The present invention relates to an electric pressure cooker, and more particularly, to an electric pressure cooker using a sealing member of a metal material instead of rubber packing as a configuration to prevent the steam of the inner pot is discharged to the outside.

Generally, food such as rice is accommodated in the inner pot, and the bottom surface of the inner pot is seated on the inner side of the main body so as to be in close contact with the hot plate provided on the inner side of the main body. It is common to use electric pressure cookers to cook food.

The electric pressure cooker is divided into a direct heating type electric pressure cooker and an induction heating type electric pressure cooker according to the heating method of heating the inner pot.

In the direct heating type electric pressure cooker, the heater coil installed in the bottom and the outer surface of the inner pot is supplied with power to heat the inner pot to cook and keep warm.

Induction heating type electric pressure cooker is to cook and insulate using an induction coil for generating an induction current by the power source, and the inner pot as a material capable of generating heat by induction current.

As described above, the direct heating type electric pressure cooker and the induction heating type electric pressure cooker are different from each other in the heating method, but only some components constituting the inside of the main body case are different in configuration, including a lid. The same is true for the remaining configurations.

The direct heating type electric pressure cooker and the induction heating type electric pressure cooker of the prior art, as shown in Figures 1 and 2, the inner pot 70 is largely placed in the main body case 1 and the main body case (1). ), And the lid 3 to be hinged to the upper body case (1).

The main body case 1 is composed of various electric devices for heating the inner pot 70 and a support plate 5 for supporting the inner pot 70.

Here, the inner pot 70 is composed of a cylindrical accommodating space 71 for accommodating grains, and a fastening jaw 72 formed in plural at the outer circumference of the upper end of the accommodating space 71.

The lid 3 has a locking means operated by an outer cover 10 hinged to the main body case 1 and a handle 21 coupled to the handle coupling groove 13 of the outer cover 10. 20), the inner cover 30 is coupled to the bottom of the outer cover 10 to guide the operation of the locking means 20, and is coupled to the bottom of the inner cover 30 to control the locking means 20. Locking ring 40 to be received, the upper heating plate 50 is fastened to the handle shaft 22 at the bottom of the locking ring 40 to support the upper locking ring 40 in a rotatable state, and the upper heating plate ( 50) It is composed of the packing 60 to be inserted into the packing groove 52 formed on the bottom to maintain the airtight of the inner pot (70).

The outer cover 10 includes a hinge portion 11 formed at the rear end of the rear cover for coupling to the main body case 1, a steam discharge portion 12 formed at the rear of the upper surface for discharging high pressure steam, and a handle. Handle coupling groove 13 formed in front of the upper surface for engaging the 21 and the open button 14 formed elastically at the front end to open the lid 3 from the body case (1) .

The locking means 20 includes a handle 21 coupled to the handle coupling groove 13 of the outer cover 10, a handle shaft 22 formed by a predetermined length at the bottom of the handle 21, and a handle. The upper washer 23 and the lower washer 24 to be fitted to the shaft 22, and the arm member 25 is fastened to the handle shaft 22 by the upper washer 23 and the lower washer 24. will be.

Here, the arm member 25 is formed by bending the plate-shaped body twice at a right angle, and the shaft groove 25a formed at one end is engaged with the handle shaft 22, and the locking groove 25b formed at the other side is locked. The fastening protrusion 41 of the ring 40 is to be bound.

The inner cover 30 has a protruding groove 31 for supporting the handle shaft 22 to which the arm member 25 is fastened, a solenoid valve pipe, and a pressure valve valve pipe (not shown) pass through the inner cover 30. The pipe through groove 32 and the guide portion 41 of the locking ring 40 are formed so that the guide groove 33 is rotated by a predetermined angle.

The locking ring 40 is formed in a circular ring shape in which the upper and lower end faces are jaws and the inner surface is open, and the lower end faces are made to correspond to the fastening jaw 72 of the inner pot 70. It is formed by forming a protrusion 41 in a plurality of fastening grooves 42 formed in the inner periphery of the formed lower end portion, and the upper end end portion is formed in the upper end so that the upper end face.

In addition, the upper heating plate 50 is formed on the plate-like body with a predetermined depth, the shaft fixing portion 51 formed to fasten the handle shaft 22 and the packing 60 can be inserted into the bottom periphery It is made of a packing groove (52).

Here, the upper heating plate 50 serves as an opening and closing plate to maintain the airtightness of the inner pot (70).

Looking at the assembly process of a conventional electric pressure cooker made of a configuration as described above are as follows.

First, the outer cover 10 is hinged to the body case (1).

Then, the handle 21 is coupled to the handle coupling groove 13 formed in the outer cover 10. The upper washer 23, the arm member 25, and the lower washer 24 are sequentially fastened on the handle shaft 22 penetrating the outer cover 10 in order.

Then, the inner cover 30 is coupled to each other, and the solenoid valve pipe, the pressure valve valve pipe (not shown), and the handle shaft 22 correspond to the pipe through groove 32 and the protrusion groove 31, respectively. Join to penetrate.

Then, when the locking ring 40 is fastened, the protrusion 41 passes through the guide groove 33 of the inner cover 30 so as to fit into the protrusion groove 25b of the arm member 25.

Then, the handle shaft 22 is fastened to the shaft fixing part 51 formed on the upper heating plate 50.

Here, the shaft fixing portion 51 and the handle shaft 22 are fastened in a rotatable state.

Finally, the packing is coupled to the packing groove 52 formed in the bottom of the upper heating plate 50.

Here, looking at the operation of the prior art made of the assembly process as described above are as follows.

When the lid 3 made of the assembly process is closed, the fastening groove 42 of the locking ring 40 and the fastening jaw 72 of the inner pot 70 do not interfere with each other, which opens or closes the lid freely. It is in a state that is able to keep cooking rice already cooked.

On the other hand, when cooking is required as a locking means 20 capable of withstanding the high pressure generated during cooking,

Accordingly, the action of the locking means 20, when rotating the handle 21 coupled to the upper portion of the outer cover 10 by a predetermined angle in the locking direction, the arm member 25 is fastened on the handle shaft 22 Is rotated, and when the projection 41 of the locking ring 40 fitted in the projection groove 25b formed at the other end of the arm member 25 is rotated along the guide groove 33, the locking ring 40 is the inner pot Rotating as if wrapped around the outer periphery of the 70 and when the locking jaw 72 of the inner pot 70 completely enters the locking portion 43 except for the locking groove 42 of the locking ring 40, the rotation is completed. In this case, it is able to withstand pressure sufficiently even at high temperature and high pressure cooking.

After cooking is finished, the lock can be simply released in the reverse order of the above method.

The pressure cooker according to the prior art is provided with a packing made of a rubber material at the bottom of the upper heating plate in order to prevent the steam generated in the cooking process to flow out. However, this packing is made of a rubber material, there is a problem that can be easily worn in the opening and closing process of the lid repeatedly. As such, the wear cost increases due to the replacement of the packing.

In addition, the steam generated from the cooking food is dropped into the water when the contact with the packing drops again, the corrosion of the packing used for a long time is a contaminant itself, so there is a risk that the water vapor in contact with it will be contaminated. . In particular, a synthetic resin material such as rubber used as a packing may cause environmental hormones, and thus is not preferable in terms of health.

Republic of Korea Patent Publication No. 2003-0018429 (Published March 6, 2003)

The present invention was created in order to solve the above problems, more specifically, it is possible to seal using only the sealing member made of a metal material without rubber packing, so that frequent maintenance of the rubber packing is not necessary, so that maintenance costs are reduced. It is an object to provide a pressure cooker.

In addition, the present invention provides an electric pressure cooker including a drive means for preventing the degradation of airtightness that may occur according to the use of the sealing member made of a metal material and to easily detach the sealing member combined with the inner pot from the inner pot. For the purpose of

Electric pressure cooker of the present invention for achieving the above object, the main body case is provided with a heater therein and the top is open, the inner pot is placed inside the main body case and a plurality of flanges are provided on the top, and An electric pressure cooker having a lid assembly hinged to a body case and disposed to cover an upper portion of an open body case, the lid assembly including an outer cover on which a rotatable handle is installed.

The inner pot,

Tapered incline at the top edge,

The lid assembly is,

An inner cover which is rotated by the handle but has a locking portion formed at an edge thereof and fastened to a flange of the inner pot;

A sealing member disposed to cross the upper portion of the inner pot so as to seal the inner pot, and a sealing member having a shape corresponding to the tapered inclined surface on a lower surface of the inner pot, the sealing member made of a metal material; And

And driving means coupled to the sealing member and the inner cover, respectively, and operated by electricity to move the inner cover and the sealing member in a direction away from or in proximity to each other.

In the electric pressure cooker,

The driving means includes:

A drive motor disposed on the inner cover and including a drive shaft; And

And a rotation converting member disposed on the sealing member and connected to the driving shaft to enable the sealing member to move coaxially with the driving shaft in accordance with the rotation of the driving shaft.

In the electric pressure cooker,

The driving means includes:

A torque sensor may be further connected to the driving shaft to detect a rotational torque of the driving motor.

In the electric pressure cooker,

If the rotational torque sensed by the torque sensor is a predetermined or more may include a control unit for stopping the operation of the drive motor.

In the electric pressure cooker,

The inner cover or the sealing member is disposed a pressure sensor for measuring the pressure inside the inner pot,

It may include a control unit for operating the drive means by the operation of at least one of the handle and the pressure sensor.

In the electric pressure cooker,

An operation button for operating the operation of the heater is provided,

A control unit for operating the driving means by the operation of the operation button may be included.

In the electric pressure cooker,

The drive motor may be a reduction motor including a reduction gear.

In the electric pressure cooker,

An elastic pressing means for pressing the sealing member in a direction away from the inner cover may be formed between the sealing member and the inner cover.

In the electric pressure cooker,

The elastic pressing means may be a spring.

In the electric pressure cooker,

The sealing member may be made of a stainless steel material.

Electric pressure cooker according to the present invention is provided on the lid without a separate rubber packing and can prevent the external leakage of steam generated during the cooking process by a sealing member that can be sealed to the top of the inner pot, frequent replacement There is no need to save the maintenance cost.

In the electric pressure cooker according to the present invention, as the sealing member made of a metal material provides a separate driving means for coupling with the inner pot, the inner pot and the sealing member are hermetically coupled with the inner pot and the inner pot is easily combined with the inner pot. There is an advantage that can be separated from.

1 is a cross-sectional view of the electric pressure cooker according to the prior art.
Figure 2 is an exploded perspective view of the main part of Figure 1;
Figure 3 is a cross-sectional view of the electric pressure cooker according to an embodiment of the present invention.
4 is an operation of FIG.
5 is a configuration diagram of the electric pressure cooker of FIG.
Figure 6 is a cross-sectional view of the electric pressure cooker according to another embodiment of the present invention.

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

The electric pressure cooker according to the present invention includes a main body case in which a heater is provided inside and an upper part thereof is opened, an inner pot placed inside the main body case and provided with a plurality of flanges at an upper part thereof, and hinged to the main body case. It includes a lid assembly including an outer cover disposed to cover the upper portion of the open body case and the rotatable handle is installed, the body case and the outer cover is similar to the prior art, so a detailed description thereof will be omitted. In addition, the handle disposed on the outer cover and the assembly configuration of the handle and the inner cover is also similar to the prior art, so a detailed description thereof will be omitted.

The inner pot of the pressure electric rice cooker according to the present invention is made in the form of a container as a whole, but a plurality of flanges protrude outwards and are spaced apart from each other at predetermined intervals. In addition, an inclined surface tapered inward is formed at the upper edge of the inner pot. Specifically, the tapered inclined surface is inclined downward inward from an upper end to a lower side.

The lid assembly 100 includes an outer cover, an inner cover 110, a sealing member 120, a driving means 130, and an elastic pressing means 140.

Since the outer cover is similar to the prior art, a detailed description thereof will be omitted.

The inner cover 110 is rotated by the handle 200, the engaging portion 111 is fastened to the flange portion of the inner pot 190 is formed on the edge. The engaging portion 111 of the inner cover 110 is fastened and released from the flange portion 191 of the inner pot 190 by the handle 200 to be coupled with the inner pot 190 or Can be uncoupled. The inner cover 110 is provided with a through hole 112 through which the outlet 122 of the sealing member 120 can pass.

The sealing member 120 is disposed to cross the upper portion of the inner pot 190 so as to seal the inner pot 190 and has a shape corresponding to the tapered inclined surface 192 on the lower surface of the inner pot 190 ( 121) is formed. In this case, the sealing surface 121 is formed to be inclined downward to the outside as opposed to the tapered inclined surface 192 and has a shape corresponding to the tapered inclined surface 192. The sealing member 120 is formed with an outlet 122 to allow steam to be discharged to the outside, the lower end of the outlet 122 is configured to communicate with the space inside the inner pot (190). The sealing member 120 may be made of a metal material different from the prior art, preferably made of a stainless steel material.

The driving means 130 is coupled to the sealing member 120 and the inner cover 110, respectively, and is operated by electricity to move the inner cover 110 and the sealing member 120 in a direction away from or in proximity to each other. It is to let. The drive means 130, the drive motor 131, the rotation conversion member 132, including a torque sensor 133.

The drive motor 131 is disposed on the outer side of the inner cover 110 by a predetermined fastening means, it is preferable that a reduction motor including a reducer is used. The drive motor 131 is provided with a drive shaft 131a which rotates in both directions, and a screw thread is formed on the drive shaft 131a.

The drive shaft 131a is positioned at an end thereof close to the sealing member 120 and inserted into the rotation conversion member 132.

The rotation conversion member 132 is disposed on the upper surface side of the sealing member 120, and specifically, is made in the form of a nut. That is, the screw thread corresponding to the screw thread formed in the drive shaft 131a is formed on the inner surface thereof so as to be screwed to the drive shaft 131a. As the rotation conversion member 132 rotates in the forward and backward directions with respect to the drive shaft 131a, the rotation conversion member 132 may move the sealing member 120 in the coaxial direction with the drive shaft 131a. For example, when the driving shaft 131a rotates in one direction, the sealing member 120 may be raised or when the driving shaft 131a rotates in the other direction, the sealing member 120 may be lowered.

The torque sensor 133, as detecting the rotational torque of the rotating drive motor 131, a conventional torque sensor 133 may be used, and various types of magnetic strain, strain gauge, phase difference detection Of course, a sensor can be used. The torque sensor 133 is coupled to the drive shaft 131a to sense the torque transmitted to the drive shaft 131a. The rotation torque measured by the torque sensor 133 is transmitted to the controller 180 to be described later, so that the operation of the driving motor 131 can be controlled.

The elastic pressing means 140 is disposed between the sealing member 120 and the inner cover 110 to press the sealing member 120 in a direction away from the inner cover 110, the present embodiment Compression coil springs may be used in the example. As the elastic pressing means 140 is disposed as described above, the sealing means reliably maintains the sealing level with the inner pot 190 when the sealing means seals the inner pot 190 by the operation of the driving motor 131. It can be done.

In FIGS. 3 and 4, reference numeral 150 denotes a separation preventing member, and the separation preventing member 150 prevents the sealing member 120 and the inner cover 110 from being spaced apart by a predetermined interval or more. Specifically, the sealing member 120 is to prevent the completely separated from the inner cover (110). The separation preventing member 150 may be a pin having a screw thread formed on one side thereof and having a diameter of the head.

In FIG. 5, reference numerals 160, 170, and 180 refer to pressure sensors, operation buttons, and controllers, respectively. The pressure sensor 160 is disposed on the inner cover 110 or the sealing member 120 to measure the pressure inside the inner pot 190 and performs a function of measuring the steam pressure generated by the heater.

The operation button 170 is for manipulating the operation of the heater, and may be, for example, a cooking button or a cooking termination button. When the cooking button contains rice and water inside the inner pot 190, the heater is operated by pressing the button so that the rice can be cooked. The finishing button is forcibly cooking when the user wants during the cooking process. To terminate. In addition, various buttons may be included.

The controller 180 is connected to the torque sensor 133, the operation button 170, the pressure sensor 160, the handle 200, and the like to receive a signal from each of them or to perform a function such as giving a signal. It can be. As the controller 180 is connected to the torque sensor 133, when the rotational torque applied to the driving motor 131 becomes greater than or equal to a predetermined level, the power transmitted to the driving motor 131 may be turned off. That is, after the driving motor 131 pressurizes the sealing member 120 and the inner pot 190 sufficiently, the operation of the driving motor 131 may be stopped to prevent breakage of the driving motor 131.

The controller 180 connected to the operation button 170 is configured to operate the driving motor 131 in association with the user's pressing of the cooking button. For example, after the user puts rice and water into the rice cooker and closes the outer cover, the user can press the operation button 170 to operate the driving motor 131 to enable a closed operation.

The controller 180 connected to the pressure sensor 160 performs the function of preventing the pressure from exceeding a dangerous level by operating the driving motor 131 when the pressure inside the inner pot 190 exceeds a reference value. do.

The controller 180 connected to the handle 200, when the user operates the handle 200 after the cooking is completed to operate the drive motor 131 to raise the sealing means for sealing the inner pot 190 The user can easily lift the outer cover.

Electric pressure cooker according to an embodiment of the present invention can operate as follows.

First, cover the lid 110 in a state of putting food such as rice and water in the inner pot (190). Specifically, after the outer cover is covered, the handle 200 is rotated so that the engaging portion 111 of the inner cover 110 can be locked to the flange portion 191 of the inner pot 190. Thereafter, when the user presses the cooking button, the control unit 180 interlocked with the cooking button applies electric power to the driving motor 131 so that the driving motor 131 operates. At this time, when the drive shaft 131a of the drive motor 131 rotates, the rotation conversion member 132 moves coaxially with the drive shaft 131a. Specifically, the drive shaft 131a moves downward. Since the sealing member 120 is coupled with the rotation conversion member 132, the inner pot 190 is hermetically sealed while descending together with the rotation conversion member 132. On the other hand, the torque sensor 133 continuously detects the rotational torque of the drive shaft 131a, when a predetermined or more rotational torque is recognized, the controller 180 turns off the electricity transmitted to the drive motor 131 by the sealing means. This further suppresses the drop and stops the rotation of the drive motor 131.

As such, even when the rotation of the driving motor 131 is stopped, the reduction motor is disposed in the driving motor 131 so that the sealing member 120 pressurizes the inner pot 190 in an airtight manner without being raised. Meanwhile, since the elastic pressing member is additionally disposed, the sealing member 120 may be prevented from rising. Steam generated during the cooking process may be discharged to the outside through the outlet (122). After cooking is completed, when the user rotates the handle 200, the controller 180 recognizes the rotation of the handle 200 to apply electricity to the drive motor 131. Thus, electricity is applied to the drive motor 131. The drive shaft 131a of the ground drive motor 131 rotates to raise the sealing member 120 so that the user can easily open the outer cover. That is, in the situation where the sealing member 120 and the inner pot 190 are in airtight contact, the driving motor 131 may be operated so that the sealing member 120 and the inner pot 190 can be easily separated.

As such, when the sealing member 120 and the inner pot 190 are separated, the outer cover can be opened in a hinged manner.

Electric pressure cooker according to this embodiment has the following effects.

First, since the electric pressure cooker according to the present embodiment maintains the sealing of the inner pot 190 by using the sealing member 120 made of a metal material rather than rubber packing, it is unnecessary to replace and maximize the convenience of use. There is an advantage.

In addition, the electric pressure cooker according to the present embodiment provides a driving means 130 to enable the raising and lowering of the sealing member 120, so that the user needs to separate or combine the sealing member 120 by applying excessive force. There is no desirable. Particularly, unlike the conventional rubber packing, the sealing member 120 made of a metal material maintains airtightness by contacting the inner pot 190 with the friction surface, and the driving means 130 makes the sealing member 120 the inner pot 190. ), Easy operation may be possible.

In addition, the electric pressure cooker according to the present embodiment, as the torque sensor 133 is disposed, so that the appropriate level of torque can be taken without fear of excessive rotational torque, thereby protecting the motor and driving motor 131. Due to excessive pressurization of the sealing member 120 and other inner pot 190 can also be prevented from being deformed.

In addition, since the electric pressure cooker according to the present embodiment includes a pressure sensor 160, when the pressure inside the inner pot 190 rapidly increases because the steam does not escape smoothly, the controller 180 controls the driving motor 131. By operating it to force the internal steam to escape to the outside has the advantage of eliminating the risk factors such as explosion.

In addition, the electric pressure cooker according to the present embodiment, the handle 200 and the operation button 170 and the control unit 180 is connected to operate the drive motor 131 can easily operate the drive motor 131. There is an advantage.

In addition, the electric pressure cooker according to the present embodiment, even when the motor is stopped, even if there is a risk that a gap occurs between the sealing means and the inner pot 190 due to factors such as backlash, the elastic pressing means 140 Since the pressurizing means is reliably secured, there is an advantage that the minimum steam cannot be discharged to the outside to maximize the efficiency.

The electric pressure cooker of the present invention can also be modified as follows.

For example, in the above-described embodiment, but illustrated that the inclined surface 192 of the inner pot 190 is tapered downward to face the outer side, but is not limited thereto, the tapered downward to face the inner side as shown in FIG. It is also possible. In addition, the corresponding sealing surface 121 may also be tapered downward to face the outer side, as shown in FIG. 6, rather than downward taper toward the inner side.

Since other configuration is the same as the electric pressure cooker of Figure 3 will not be described in detail.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, and many modifications may be made without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100.Land assembly 110 ... Inner cover
111 ... catching part 112 ...
120 Sealed member 121 Sealed surface
122 ... outlet 130 ... driving means
131 ... drive motor 131a ... drive shaft
132 ... Torque conversion means 133 ... Torque sensor
140 ... elastic pressure means 150 ... release prevention member
160.Pressure sensor 170 ... Operation button
180 control unit 190 inner pot
191.Flange section 192.Inclined plane
200 ... handle

Claims (10)

A main body case having a heater provided therein and having an open upper portion, an inner pot having a plurality of flange portions provided therein, and covering the upper portion of the main body case hinged to the main body case and disposed in the upper portion of the main body case; In the electric pressure cooker having a lid assembly comprising an outer cover disposed and the rotatable handle,
The inner pot,
Tapered inclined surface is formed on the outer circumferential surface of the upper edge,
The lid assembly is,
An inner cover which is rotated by the handle but has a locking portion formed at an edge thereof and fastened to a flange of the inner pot;
A sealing member disposed to cross the upper portion of the inner pot so as to seal the inner pot, and a sealing member having a shape corresponding to the tapered inclined surface on an inner circumferential surface thereof, the sealing member made of a metal material; And
It is coupled to each of the sealing member and the inner cover and includes a drive means for operating by moving the inner cover and the sealing member in a direction away from or close to each other,
The driving means includes:
A drive motor disposed on the inner cover and including a drive shaft; And
And a rotation converting member disposed on the sealing member and connected to the driving shaft to enable the sealing member to move coaxially with the driving shaft in accordance with the rotation of the driving shaft. delete The method of claim 1,
The driving means includes:
An electric pressure cooker is connected to the drive shaft further comprises a torque sensor for detecting the rotational torque of the drive motor. The method of claim 3,
The electric pressure cooker, characterized in that the control unit for stopping the operation of the drive motor when the rotational torque detected by the torque sensor more than a predetermined. The method of claim 1,
The inner cover or the sealing member is disposed a pressure sensor for measuring the pressure inside the inner pot,
And a control unit for operating the driving means by at least one of the handle and the pressure sensor. The method of claim 1,
An operation button for operating the operation of the heater is provided,
Electric pressure cooker comprising a control unit for operating the drive means by the operation of the operation button. The method of claim 1,
The drive motor is an electric pressure cooker, characterized in that the reduction motor including a reducer. The method of claim 1,
An electric pressure cooker, characterized in that the elastic pressing means for pressing the sealing member in a direction away from the inner cover between the sealing member and the inner cover. 9. The method of claim 8,
The elastic pressing means is an electric pressure cooker, characterized in that the spring. The method of claim 1,
The sealing member is an electric pressure cooker having a sealed structure without a rubber packing, characterized in that made of stainless steel material.

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