KR102357794B1 - Control method of electric pressure cooker - Google Patents

Abstract

The present invention relates to a control method for an electric pressure cooker, and more particularly, includes an input step of receiving a cooking pressure and a cooking step of cooking according to the input value, wherein the cooking step is performed only in some of the various processes. It relates to a method for controlling an electric pressure cooker in which the temperature of the variable pressure device is prevented from rising and power consumption is reduced by applying power to the device.

Description

Control method of electric pressure cooker

The present invention relates to a method for controlling an electric pressure cooker, and more particularly, to a method for controlling an electric pressure cooker in which the cooking step applies power to a variable pressure device only in some of several processes.

In general, the electric pressure cooker has an inner pot inside the rice cooker body 1 as shown in FIG. 1, and the inner pot 2 is opened and closed again by opening and closing the inner cover 2A, and this upper side is It is configured to be opened and closed by opening and closing of the main body lid (1A). In addition, the inner pot (2) and the inner lid (2A) are to be locked and unlocked by a locking means. A locker (3A) having another several lugs corresponding to the lugs of the inner pot (2) while interlocking with the rotary sphere (3) provided in the main sieve lid (1A) on the inner lid (2A) side is provided so that it can be locked or released by interlocking or misalignment by the rotation operation of the rotary sphere 3 . In addition, the gap between the inner pot (2) and the inner lid (2A) is sealed by a packing (2B), on the outer surface of the inner pot (2) the food (F) contained in the inner pot (2) A heating means (5) for heating according to an operation signal by the user's operation of the operation unit (4) is provided. And the inner lid (2A) is provided with a pressure adjusting means for constantly maintaining the inner pressure of the inner pot (2) by the steam generated by heating the food (F) by the heating means (5). The pressure regulating means is provided with a valve 6 having a vapor discharge hole 6A in the form of a vertical pipe in such a way that it penetrates the inner and outer lids of the inner lid 2A, and a pressure weight 7 is installed at the upper end of the valve 6 ) is mounted on the steam outlet hole (6A) of the valve (6) in a closed state. At this time, the internal pressure of the inner pot (2) is to determine the working pressure in a correlation formula according to the weight of the pressure weight (7) and the diameter of the steam discharge hole (6A). The electric pressure cooker configured in this way first rotates the rotary port 3 provided in the main body lid 1A in the opening direction. Accordingly, the locking of the inner lid (2A) with respect to the inner pot (2) is released, and the user opens the inner pot (2) by opening the inner lid (2A) together with the main body lid (1A). When the inner pot (2) is opened in this way, the food (F) is put inside the inner pot (2), then the inner lid (2A) and the lid body are closed again, and then the rotary port (3) is rotated in the closing direction After sealing the inner lid (2A) with respect to the inner pot (2) in a locked state, the cooking is started by operating the operation unit (4) provided on one side of the rice cooker body (1). When the operation unit 4 is operated in this way, the food F inside the inner pot 2 is cooked by the heating means 5 installed in several places on the outer side of the inner pot 2, and the inner pot 2 has Internal pressure is generated by steam. At this time, the internal pressure is the set pressure, that is, the diameter of the steam discharge hole 6A of the valve 6 vertically installed in such a way that it penetrates the inner lid 2A and the valve 6 When the pressure set by the weight relation formula of the pressure weight 7 provided at the upper end of the pressure weight 7 is lifted upward by the pressure, the steam discharge hole 6A of the valve 6 is opened, and the steam inside the inner pot (2) is discharged to the outside through the opened steam discharge hole (6A), and when the pressure inside the inner pot (2) falls below the set pressure again, the pressure weight (7) ) is to close the steam discharge hole (6A) while descending by its own weight, thereby maintaining the pressure inside the inner pot (2) constant.

However, the conventional electric pressure cooker has a problem in that the pressure inside the inner pot (2) is determined by the pressure weight (7), so that food in various conditions cannot be cooked.

In order to solve this problem, a pressure cooker capable of variously adjusting the pressure inside the inner pot (2) is proposed in Korean Patent No. 10-0638994. In such a pressure cooker, the user operates a pressure switch formed on the outside of the lid of the pressure cooker to set a cooking pressure suitable for the food to be cooked, the displacement of the pressure switch operated by the user is measured, and the displacement measurement information of the pressure switch is In addition to being transmitted to the central processing unit of the pressure cooker, preset cooking information corresponding to the displacement information of the pressure switch is derived from the central processing unit and transmitted to the controller, and the heating temperature and heating corresponding to the cooking information in the controller By controlling time, etc., the pressure inside the inner pot is changed according to the maximum pressure inside the inner pot changed by the user, the heating temperature and time for the inner pot are changed, and the corresponding information is displayed outside the pressure cooker .

However, such a conventional pressure cooker is inconvenient to use because the user must directly rotate the pressure switch. Therefore, in order to solve this inconvenience, supplying power to the solenoid valve to control the pressure is suggested in Korean Utility Publication No. 20-0342109. However, when using the solenoid valve as described above, if continuous cooking is performed, the temperature of the solenoid valve increases, so that power is not applied even when power is to be applied.

In addition, the conventional pressure cooker has a problem in that the temperature of the solenoid valve increases and power consumption increases by applying power to the solenoid valve from before cooking to when cooking is completed.

Korean Patent Publication No. 10-0638994 Korean Utility Publication No. 20-0342109

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a method for controlling an electric pressure cooker in which a temperature rise of a variable pressure device is prevented and power consumption is reduced.

An electric pressure cooker control method of the present invention for achieving the above object includes an input step of receiving a cooking pressure and a cooking step of cooking according to the input value, wherein the cooking step is variable only in some of the various processes. It is characterized in that power is applied to the pressure device.

In the cooking step, power may be applied to the variable pressure device in the heating process.

In the cooking step, power may be applied to the variable pressure device in the delay process.

In the cooking step, power may be applied to the variable pressure device from after the soaking process to before the steaming process.

In the cooking step, power may not be applied to the variable pressure device in the soaking process.

In the cooking step, power may not be applied to the variable pressure device in the steaming process.

According to the electric pressure cooker control method of the present invention as described above, the following effects are obtained.

It includes an input step of receiving a cooking pressure and a cooking step of cooking according to the input value, wherein the cooking step applies power to the variable pressure device only in some of the various processes to increase the temperature of the variable pressure device. and power consumption is reduced.

In the cooking step, power may be applied to the variable pressure device from after the soaking process to before the steaming process to maintain the taste of the rice.

1 is a cross-sectional view showing the internal structure of a conventional electric pressure cooker.
2 is a cross-sectional view of a variable pressure device for an electric pressure cooker (state set at high pressure) according to a preferred embodiment of the present invention.
3 is a cross-sectional view of a variable pressure device for an electric pressure cooker according to a preferred embodiment of the present invention (a state set to a low pressure).
Figure 4 is a graph showing the bottom temperature of the variable pressure device and the inner pot for an electric pressure cooker according to a preferred embodiment of the present invention.

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

For reference, among the components of the present invention to be described below, for the same components as in the prior art, reference will be made to the above prior art, and a separate detailed description thereof will be omitted.

When a part is referred to as being “above” another part, it may be directly on the other part, or the other part may be involved in between. In contrast, when a part is referred to as being "directly above" another part, the other part is not interposed therebetween.

The terminology used herein is for the purpose of referring to specific embodiments only, and is not intended to limit the invention. As used herein, the singular forms also include the plural forms unless the phrases clearly indicate the opposite. The meaning of "comprising," as used herein, specifies a particular characteristic, region, integer, step, operation, element and/or component, and other specific characteristic, region, integer, step, operation, element, component, and/or group. It does not exclude the existence or addition of

Terms indicating a relative space such as “below” and “above” may be used to more easily describe the relationship of one part shown in the drawings to another part. These terms are intended to include other meanings or operations of the device in use with the meanings intended in the drawings. For example, if the device in the drawings is turned over, some parts described as being "below" other parts are described as being "above" other parts. Thus, the exemplary term “down” includes both the up and down directions. The device may be rotated 90 degrees or at other angles, and terms denoting relative space are to be interpreted accordingly.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be

The variable pressure device for an electric pressure cooker of this embodiment includes a main body 100 having an inlet 101 and an outlet 102 formed therein, and a variable member 200 installed in the main body 100 to adjust the pressure inside the cooker. includes

As shown in FIG. 2 , the main body 100 has an inlet 101 through which the steam inside the inner pot is introduced and an outlet 102 through which the steam is discharged. The body 100 is installed on the lid of the electric pressure cooker. In this embodiment, the main body 100 and the lid are provided separately, but alternatively, the main body 100 may be integrally formed with the lid.

The inlet 101 communicates with the inner pot of the electric pressure cooker, and the outlet 102 communicates with the outside.

The inlet 101 is formed in the left and right direction. That is, the inlet 101 is formed in the horizontal direction.

A protrusion 110 is formed in the body 100 to surround the inlet 101 , and the protrusion 110 is in line contact with the contact portion 291 of the variable member 200 . The protrusion 110 is formed to protrude toward the contact portion 291 of the variable member 200 . That is, the protrusion 110 is formed to protrude to the left.

The protrusion 110 is formed to be thinner as it approaches the contact portion 291 . Although the inner diameter of the protrusion 110 is the same, an inclined surface is formed at the end of the outer peripheral surface of the protrusion 110 so that the outer diameter becomes smaller toward the contact portion 291 .

At least one of the contacting portion 291 and the protruding portion 110 is formed so that a portion in contact with each other is curved. In this embodiment, the end 111 of the protrusion 110 is formed to be curved in an arc shape.

The outlet 102 is formed in the vertical direction. That is, the outlet 102 is formed in a vertical direction, which is a direction crossing the inlet 101 .

The inlet 101 is disposed at the lower portion between the left end and the right end of the outlet 102 .

An inlet pipe 120 and an outlet pipe 130 having flow paths communicating with the inlet 101 and the outlet 102 are formed in the upper part and the side of the body 100 , respectively.

The outlet pipe 130 is formed in a straight shape in the vertical direction.

The inlet pipe 120 is formed by bending the middle portion at a right angle. That is, the flow path is formed in the vertical direction at the inlet side of the inlet pipe 120 , and the flow path is formed in the left and right directions at the outlet side (the portion connected to the inlet port).

A variable member installation groove 104 in which the variable member 200 is installed is formed in the body 100 .

The variable member installation groove 104 is formed in the left and right directions, and communicates with the inlet 101 and the outlet 102 . The variable member installation groove 104 is disposed under the outlet 102 , and is disposed on the left side of the inlet 101 .

The variable member installation groove 104 is formed so that the left side is opened.

A drain hole 103 is formed in the body 100 to communicate with the variable member installation groove 104 . The drain hole 103 is formed to penetrate in the vertical direction.

The drain hole 103 prevents rice water from accumulating inside the variable member installation groove 104, which is hygienic and there is no need to separate the variable member 200 for cleaning, thereby improving convenience.

The inlet 101 is disposed at an intermediate height of the variable member installation groove 104 , and the lowest point of the variable member installation groove 104 is lower than the lowest point of the inlet 101 . Due to this, even if the drain hole 103 is blocked, it is minimized that the rice water inside the variable member installation groove 104 is discharged to the inlet 101 .

The drain hole 103 is disposed at the bottom of the variable member installation groove 104 , and is disposed below the inlet 101 . That is, the drain hole 103 is disposed to be spaced apart from the inlet 101 . For this reason, the rice water inside the variable member installation groove 104 is prevented from being discharged to the inlet 101 .

The drain hole 103 may be formed to be disposed in a straight line with the inlet 101 and the outlet 102 .

The drain hole 103 and the drip tray provided in the electric pressure cooker may be connected through a pipe or the like. That is, the water discharged through the drain hole 103 may be transferred to the drip tray. In this way, the water discharged through the drain hole 103 is discharged to the outside.

The drain hole 103 is disposed between the diaphragm 290 and the inner wall in which the inlet 101 is formed in the main body 100 .

The variable member 200 is installed in the variable member installation groove 104 of the main body 100 to adjust the internal pressure of the inner pot of the electric pressure cooker.

The variable member 200 is disposed in the horizontal direction, so that the vertical height of the lid on which the variable member 200 is installed can be minimized.

The variable member 200 includes a coil 210 , a plunger 230 disposed inside the coil 210 , a relief 280 slidable with respect to the plunger 230 , the relief 280 and the plunger. and a relief spring 270 disposed between 230 . In the variable member 200, the plunger 230 is slid in the left and right direction by electromagnetic force, and the relief spring 270 is contracted or relaxed to adjust the tension. Due to this, the internal pressure of the inner pot is easily and finely adjusted. For example, when power is applied to the coil 210 to move the plunger 230 to the right, the relief spring 270 is contracted to increase the elastic force applied by the relief spring 270 to the relief 280, and the coil ( When power is applied to 210 and the plunger 230 is moved to the left, the relief spring 270 is relaxed and the elastic force applied by the relief spring 270 to the relief 280 is reduced, thereby regulating the internal pressure of the inner pot. .

In the relief 280 , a spring seating groove in which one end of the relief spring 270 is seated is formed in the left and right directions. The spring seating groove is formed so that the left side is opened. Due to the spring seating groove, the relief spring 270 can stably maintain the installed state in the relief 280 .

The relief 280 is slid in the horizontal direction (left and right direction).

The relief 280 may be formed of a non-magnetic material.

On the other hand, it may further include an input unit (not shown) that receives the pressure inside the inner pot from the user, and a control unit (not shown) for controlling the coil 210 according to the information input to the input unit. Due to this, the user can easily adjust the pressure inside the inner pot according to the situation. The input unit may be provided as a button or a touch screen.

Furthermore, the variable member 200 of this embodiment further includes a frame 250 surrounding the coil 210 and a plunger spring 240 disposed between the plunger 230 and the frame 250 .

A coil 210 is disposed inside the frame 250 .

The frame 250 is installed on the left side of the main body 100 .

In addition, a core 220 may be further disposed between the frame 250 and the plunger 230 .

In the plunger 230, a spring seating groove in which one end of the plunger spring 240 is seated is formed in the left and right directions. The spring seating groove is formed so that the left side is opened.

The other end of the plunger spring 240 is supported by the core 220 fixed to the frame 250 .

The plunger spring 240 and the relief spring 270 are provided as coil springs, and use a compression spring.

The plunger spring 240 and the relief spring 270 are arranged in series.

As shown in FIG. 2 , when no power is applied to the coil 210 , the plunger 230 is also freely slidable with respect to the body 100 . Therefore, when no power is applied to the coil 210 , pressure is formed by the tension of the plunger spring 240 and the relief spring 270 . That is, when no power is applied to the coil 210 , the internal pressure of the inner pot is adjusted to a high pressure (eg, 2.0 bar). In this way, even when power is not applied to the coil 210 , the pressure inside the inner pot is formed to minimize power consumption. In addition, since the amount of deformation of the spring can be reduced, the deformation of the spring itself can be prevented, so that operation reliability can be improved.

On the other hand, as shown in FIG. 3, when power is applied to the coil 210, the position of the plunger 230 is fixed and pressure is formed by the tension of the relief spring 270, and the internal pressure of the inner pot is low pressure (eg for example, 1.2 bar). In this way, when the low pressure is set, the plunger 230 is initially moved to be in close contact with the core 220 .

The tension of the plunger spring 240 and the tension of the relief spring 270 may be different.

For example, the tension of the plunger spring 240 may be greater than the tension of the relief spring 270 . Alternatively, the tension of the plunger spring 240 may be less than the tension of the relief spring 270 .

The variable member 200 includes a contact portion 291 that is in line contact with the body 100 and blocks the inlet 101 .

The contact part 291 is provided separately from the relief 280 and is installed at the end (one end) of the relief 280 . Alternatively, the contact portion 291 may be integrally formed with the relief 280 .

The contact portion 291 is integrally formed with the diaphragm 290 . That is, the relief 280 is provided with a diaphragm 290 .

On one side (right side) of the contact portion 291, a flat surface in contact with the body 100 is formed, and on the other side (left side) of the contact portion 291, an insertion groove into which a relief flange formed at the end of the relief 280 is inserted is formed. do. Unlike the above, the surface in contact with the body 100 in the contact portion 291 may be formed to be curved in a convex or concave arc shape.

The outer diameter of the contact portion 291 is larger than the inner diameter (diameter of the inlet) of the protrusion 110 .

An outer diameter of the relief flange is smaller than an outer diameter of the contact portion 291 . The inner diameter of the protrusion 110 is smaller than the outer diameter of the relief flange. The inner diameter of the protrusion 110 is smaller than the outer diameter of the relief spring 270 .

The upper and lower widths (outer diameters) of the contact portion 291 are formed to be the same as or similar to the upper and lower widths of the relief 280 .

The contact portion 291 is in line contact with the end 111 of the protrusion 110 . When the contact portion 291 is in surface contact, if there is a slight inclination or unevenness, steam leaks to the portion and cannot maintain a constant atmospheric pressure, but the contact portion 291 of this embodiment is in line contact with the body 100 and the inlet ( 101), the airtightness is improved and the pressure can be kept constant.

The diaphragm 290 is disposed between the coil 210 and the inlet 101 of the main body 100 to prevent fluid from flowing toward the coil 210 , thereby protecting the variable member 200 .

The diaphragm 290 includes a fixing part 293 disposed at an edge, a connection part 292 connecting the fixing part 293 and the contact part 291 , and a contact part 291 .

The thickness of the contact part 291 is formed to be thicker than the fixing part 293 , and the thickness of the fixing part 293 is formed to be thicker than the connecting part 292 . The connection part 292 is a part that is elastically deformed. The contact part 291 and the connection part 292 may be formed of different materials. For example, the connecting portion 292 may be formed of a material that can be elastically deformed well, and the contact portion 291 may be formed of a material having rigidity.

A seating groove is formed in the main body 100 in which the fixing part 293 is seated around the variable member installation groove 104 , so that the installation of the diaphragm 290 is facilitated.

The variable member 200 includes a stopper 261 for limiting the stroke distance of the relief 280 . Due to the stopper 261, the stroke distance of the relief 280 is limited, thereby preventing the internal pressure of the inner pot from falling or increasing, thereby maintaining a desired pressure during cooking. Therefore, the reliability of the product can be improved.

The stopper 261 is formed in the housing 260 to guide the sliding of the relief 280 .

The housing 260 includes a cylindrical guide portion 262 , a flange 263 formed outside one end of the guide portion 262 , and a stopper 261 formed inside the other end of the guide portion 262 .

The guide part 262 is formed through a guide hole into which the relief 280 is inserted in the left and right directions. The guide part 262 guides the relief 280 in a straight line. The guide part 262 is disposed in the left and right directions, and the left side is disposed inside the coil 210 . A part of the guide hole is disposed inside the coil 210 . Accordingly, the stopper 261 is disposed between both ends of the coil 210 . The sliding of the relief 280 may be smooth due to the guide portion 262 .

The flange 263 is disposed between the coil 210 and the body 100 , and is installed in the body 100 . In detail, it is disposed between the coil 210 and the fixing part 293 of the diaphragm 290 . A donut-shaped plate having a hole through which the guide part 262 passes is disposed between the coil 210 and the flange 263 . A second fastening part (not shown) is formed on the plate to be fastened to a first fastening part (not shown) formed to protrude on the outside of the main body 100 . In addition, a third fastening part (not shown) fastened to the second fastening part is formed in the frame 250 . Bolts and the like are fastened to the first, second, and third fastening portions, and the frame 250 and the plate are fixedly installed on the body 100 .

The stopper 261 is formed to protrude inward from the inner wall of the guide part 262 .

The stopper 261 is formed to have an inner diameter smaller than the outer diameter of the relief 280, and is formed to be larger than the outer diameter of the relief spring 270 provided as a coil spring.

The stopper 261 is disposed between the right side of the plunger 230 and the left side of the relief 280 . The right side of the plunger 230 may be caught by the stopper 261 . The left side of the relief 280 is caught by the stopper 261 .

The stopper 261 may be disposed between one end and the other end of the relief spring 270 to prevent excessive pressure from being applied to the relief spring 270 to protect the relief spring 270 . In detail, the surface in contact with the relief 280 in the stopper 261 is disposed between one end and the other end of the relief spring 270 .

Hereinafter, the operation of the present embodiment having the above-described configuration will be described.

When cooking, the steam inside the inner pot is introduced through the inlet pipe 120 to reach the inlet 101 . When the pressure inside the inner pot is higher than the pressure set by the user, the steam presses the contact portion 291 blocking the inlet 101, and the main body 100 and the contact portion 291 are spaced apart to open the inlet 101. For this reason, the steam inside the inner pot is discharged to the outside through the outlet (102). When the steam presses the contact portion 291 , the relief 280 slides to the left to contract the plunger spring 240 and/or the relief spring 270 . When the high pressure is set, the plunger 230 and the relief 280 are slidable, so the plunger spring 240 and the relief spring 270 are contracted, and when the low pressure is set, the plunger 230 is fixed and only the relief 280 is Since it is slidable, the relief spring 270 is contracted. When the relief 280 is slid to the left, if it is slid more than a certain distance, it is caught by the stopper 261 and no longer slid. Due to this, the stroke distance of the relief 280 is limited and the pressure inside the inner pot is stably maintained.

If the pressure inside the inner pot is less than the pressure set by the user, the inlet 101 is kept blocked by the contact portion 291 by the elastic force of the plunger spring 240 and/or the relief spring 270, and the steam is discharged to the outside. will not be emitted. The contact portion 291 and the main body 100 are in line contact to improve airtightness, thereby preventing steam leakage. Accordingly, the pressure inside the inner pot is stably maintained.

After the steam is discharged, the water accumulated in the variable member installation groove 104 is automatically discharged to the outside through the drain hole 103 .

The electric pressure cooker control method of this embodiment includes an input step of receiving a cooking pressure and a cooking step of cooking according to the input value, wherein the cooking step applies power to the variable pressure device only in some of the various processes. characterized in that

The pressure and cooking inside the inner pot are input through the input unit installed on the main body or lid of the electric pressure cooker. A value input through the input unit is transmitted to a control unit, and the control unit cooks by controlling each component of the electric pressure cooker according to the input value.

If the pressure inside the inner pot is set to high pressure, it becomes sticky rice, and if it is set to low pressure, it becomes sticky rice without stickiness. When high pressure is selected, the maximum internal pressure of the inner pot is set higher than when low pressure is selected.

As described above, the variable pressure device of this embodiment maintains a low pressure when power is applied, and maintains a high pressure when power is not applied.

When the user selects high-pressure rice in the input step, power is not applied to the variable pressure device in all processes of the cooking step. In addition, it is cooked according to the high-pressure rice cooking process determined in the cooking step.

When the user selects low-pressure rice in the input step, power is applied to the variable pressure device only in some of the various processes. That is, when low-pressure rice is selected, the pressure is adjusted only in some processes. In addition, it is cooked according to the low-pressure rice cooking process determined in the cooking step.

The cooking step consists of a plurality of processes. For example, the cooking step includes a soaking process, a primary heating process, a delay process, a secondary heating process, and a steaming process.

During the soaking process, no power is applied to the variable pressure device.

Then, the first heating process is performed. During the first heating process, power is applied to the variable pressure device to adjust the inner pressure of the inner pot to become low pressure.

Then, a delay process is performed, and power is applied to the variable pressure device during the delay process.

Then, during the secondary heating process, power is applied to the variable pressure device to adjust the internal pressure of the inner pot to become low pressure.

That is, power is applied to the variable pressure device from after the soaking process to before the steaming process.

Then, power is not applied to the variable pressure device during the steaming process.

As described above, by applying power to the variable pressure device only in some processes, the temperature of the variable pressure device is prevented from rising, power consumption is reduced, and the taste of rice is maintained.

4 is a case in which power is applied to the variable pressure device before cooking (from the soaking process) when low-pressure rice is cooked (case A) and when power is applied to the variable pressure device from the first heating process (case B) It is a graph showing the temperature of the variable pressure device. Blue indicates the temperature of the bottom of the inner pot detected through the bottom sensor (BS), red indicates the side temperature of the variable pressure device when power is applied from the soaking process, and yellow green indicates when power is applied from the soaking process shows the bottom temperature of the variable pressure device, orange represents the side temperature of the variable pressure device when power is applied from the heating process, and light blue represents the bottom temperature of the variable pressure device when power is applied from the heating process.

During the soaking process, the temperature of the bottom of the inner pot rises to about 40℃ and is maintained, during the first heating process, the temperature of the bottom of the inner pot rises to 122℃, and during the delayed process, the temperature of the bottom of the inner pot drops to 116℃, , during secondary heating, the temperature of the bottom of the inner pot rises to 122°C, and during the steaming process, the temperature of the bottom of the inner pot drops to 82°C.

In case A, the temperature of the side surface of the variable pressure device rises to 160°C during the soaking process, and the temperature of the bottom of the variable pressure device rises to 142°C.

In case B, the temperature of the side and bottom of the variable pressure device is maintained at about 30℃ during the soaking process. During the primary heating process, the side temperature of the variable pressure device rises to 132°C, and the temperature at the bottom of the variable pressure device rises to 122°C. During the delay process, the temperature of the side surface of the variable pressure device drops to about 130°C, and the temperature of the bottom of the variable pressure device rises to about 126°C. In the secondary heating process, the side temperature of the variable pressure device is 130°C, and the temperature of the bottom of the variable pressure device is maintained at about 126°C. During the steaming process, the temperature of the side and bottom of the variable pressure device drops to 48℃.

In this way, the maximum temperature of the variable pressure device is lower than that when power is not applied to the variable pressure device during the soaking process. Due to this, the variable pressure device can be protected and the variable pressure device from malfunctioning is prevented.

As described above, although described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify or modify the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. can be carried out.

** DESCRIPTION OF SYMBOLS FOR MAJOR PARTS OF DRAWING **
100: body 101: inlet
102: outlet 103: drain hole
104: variable member installation groove 110: protrusion
120: inlet pipe 130: outlet pipe
200: variable member 210: coil
220: core 230: plunger
240: plunger spring 250: frame
260: housing 261: stopper
262: guide portion 263: flange
270: relief spring
280: relief 290: diaphragm
291: contact portion 292: connection portion
293: fixed part

Claims (6)

an input step of receiving the cooking pressure of the electric pressure cooker;
It includes a cooking step of cooking according to the input value,
The cooking step is
When the input value is low pressure, power is applied to the variable pressure device only in some processes among several processes,
When the input value is high pressure, power is not applied to the variable pressure device in all processes,
The variable pressure device is
When power is applied, the internal pressure of the electric pressure cooker is maintained at a low pressure,
To maintain the internal pressure of the electric pressure cooker at a high pressure when power is not applied,
How to control electric pressure cooker. The method according to claim 1,
The cooking step is an electric pressure cooker control method, characterized in that applying power to the variable pressure device in the heating process. The method according to claim 1,
The cooking step is an electric pressure cooker control method, characterized in that applying power to the variable pressure device in the delay process. The method according to claim 1,
The cooking step is an electric pressure cooker control method, characterized in that applying power to the variable pressure device from after the soaking process to before the steaming process. The method according to claim 1,
In the cooking step, the electric pressure cooker control method, characterized in that non-applying power to the variable pressure device in the soaking process. The method according to claim 1,
The cooking step is an electric pressure cooker control method, characterized in that the non-applying power to the variable pressure device in the steaming process.

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