KR102361959B1 - Electric cooker and its to method - Google Patents

Abstract

The present invention relates to an electric cooker that can change between a high-pressure mode and a no-pressure mode, and can cook a menu corresponding to the changed mode.
The electric cooker of the present invention opens and closes a main body having an accommodating space in which the inner pot is accommodated, a lid coupled to the upper portion of the main body to open and close, and a plurality of discharge paths penetrating and blocking between the inner pot and the outside of the cover to open and close the high pressure mode and a pressure converter for selecting a no-pressure mode, first and second detection sensors for respectively detecting the no-pressure mode and the high-pressure mode selected by the pressure converter, and pre-stored menus including a high-pressure menu and a no-pressure menu and a display unit for displaying a pressure mode including at least the no-pressure mode and the high-pressure mode; and a current pressure mode according to first and second detection signals from the first and second detection sensors, the display unit and a control unit that visually or audibly displays the current pressure mode.

Description

ELECTRIC COOKER AND ITS TO METHOD

The present invention relates to an electric cooker and a control method thereof, and more particularly, to an electric cooker capable of changing between a high-pressure mode and a no-pressure mode, and allowing a menu corresponding to the changed mode to be cooked, and a control method thereof.

The electric cooker is a device for cooking food by heating the inside of the inner pot in a state in which the food material to be cooked is contained in the inner pot. A basic structure of a general electric cooker includes a main body, an inner pot that is accommodated in the main body and into which food is put, and a lid that covers the upper part of the main body. The main body is provided with a heating means to heat the inner pot, and the lid is provided to open and close the upper part of the main body. In addition, the lid is provided with a steam discharge unit (eg, a solenoid valve device) for controlling the steam in the inner pot by opening and closing the steam discharge passage, and a pressure weight valve for maintaining the inner pressure inside the pot at a constant level.

This conventional electric cooker maintains the inside of the inner pot at a set pressure through the interaction between the weight pressure of the pressure weight and the vapor pressure, so a cooking method suitable for the user's taste or type of food cannot be applied/selected, resulting in deterioration of cooking quality. there was For example, in the case of cooking of food that does not require pressure (for example, steamed vegetables, etc.), there is a problem that the texture is weakened due to high pressure, and I do not like pressure rice with a sticky and chewy texture, If you like non-pressurized rice with a soft texture, you need to purchase and use a separate pressureless rice cooker or cook it using a regular pot.

The present invention provides an electric cooker capable of selecting a change between a high-pressure mode (or cooking) and a no-pressure mode, and allowing the user to recognize the selected mode and the menu corresponding to the selected mode to cook the menu corresponding to the selected mode, and the same An object of the present invention is to provide a control method.

In addition, the present invention determines various modes such as high-pressure mode, no-pressure mode, error mode, and failure mode based on the detection signals from a plurality of magnetic sensors, and displays and guides the user corresponding to the determined mode. An object of the present invention is to provide an electric cooker and a control method therefor.

The electric cooker of the present invention opens and closes a main body having an accommodating space in which the inner pot is accommodated, a lid coupled to the upper portion of the main body to open and close, and a plurality of discharge paths penetrating and blocking between the inner pot and the outside of the cover to open and close the high pressure mode and a pressure converter for selecting a no-pressure mode, first and second detection sensors for respectively detecting the no-pressure mode and the high-pressure mode selected by the pressure converter, and pre-stored menus including a high-pressure menu and a no-pressure menu and a display unit for displaying a pressure mode including at least the no-pressure mode and the high-pressure mode; and a current pressure mode according to first and second detection signals from the first and second detection sensors, the display unit and a control unit that visually or audibly displays the current pressure mode.

In addition, it is preferable that the control unit display the menus and the pressure mode differently when there is a change in the current pressure mode and when there is no change.

In addition, the electric cooker includes an input unit that receives a menu selected and confirmed by a user from among the menus displayed on the display unit, and the control unit displays the pre-stored menus on the display unit, and the selected and confirmed menu from the input unit It is preferable to input

In addition, the electric cooker includes an input unit for receiving a menu selected and confirmed by a user from among the menus displayed on the display unit, and the control unit turns on only the menu corresponding to the current pressure mode or turns on the pre-stored menus, It is preferable to receive the selected and confirmed menu from among the menus corresponding to the current pressure mode from the input unit.

Preferably, the controller determines whether there is a change in the current pressure mode while performing the cooking algorithm.

In addition, according to the present invention, the control method of the electric cooker selectively performing the high-pressure mode and the no-pressure mode included in the pressure mode includes displaying menus including a high-pressure menu and a no-pressure menu, and selecting one of the menus displayed in the display step. A method comprising: receiving a selection and confirmation of a menu; obtaining a cooking start input for the selected and confirmed menu; and performing cooking on the selected and confirmed menu according to the cooking start input, the control method comprising: and determining the pressure mode during or before performing at least one of the display step, the selection confirmation step, the cooking start input obtaining step, and the menu cooking step, or the step of determining whether the pressure mode is changed.

According to the present invention, it is possible to select a change between a high-pressure mode (or cooking) and a no-pressure mode, and the selected mode and the menu corresponding to the selected mode are recognized by the user so that the cooking of the menu corresponding to the selected mode is performed, so that pressure-free cooking is performed. Since the pressure-free mode for cooking and high-pressure mode for cooking that requires high pressure such as pressure cooking can be easily changed, various recipes can be freely used with one device. It is possible to cook according to the user's taste, such as a soft texture, so it has the effect of improving product compatibility and cooking quality.

In addition, the present invention determines various modes such as high-pressure mode, no-pressure mode, error mode, and failure mode based on detection signals from a plurality of magnetic sensors, and displays and guides the user corresponding to the determined mode. , provides cooking according to the user's desired recipe (high pressure/no pressure), and has the effect of preventing deterioration of cooking quality due to wrong selection of pressure mode or menu.

1 is a block diagram of an electric cooker according to the present invention.
2 is an exploded perspective view showing a lid part of the electric cooker according to the present invention.
3A and 3B are perspective views showing the open and closed states of the pressure converting means in the electric cooker according to the present invention.
4A and 4B are cross-sectional views showing the open and closed state of the pressure converting means in the electric cooker according to the present invention.
5 is a plan view of the lid part of the electric cooker according to the present invention.
6 is a flowchart of a control method of the electric cooker of FIG. 1 .
7A and 7B are exemplary embodiments displayed to a user through the display unit 114 .
FIG. 8 is a control flowchart when a pressure mode is changed in the menu selection process of FIG. 6 .
9 is an example of the input unit 112 .
10A and 10B are other embodiments of the cooking start input process of FIG. 6 .
FIG. 11 is a control flowchart when a pressure mode is changed in the cooking process of FIG. 6 .

Hereinafter, the present invention will be described in detail through drawings and examples.

1 is a block diagram of an electric cooker according to the present invention.

The electric cooker 100 of the present invention includes a power supply unit 110 that receives commercial power and supplies necessary power, and an input unit 112 that receives input from the user for menu selection, servings or capacity (amount of food), and cooking start input. And, a display unit 114 for displaying a cookable menu or a process currently in progress, and a pressure converting unit for selecting a high-pressure mode or a no-pressure mode by performing a change between the high-pressure mode and the no-pressure mode by an external force ( FIGS. 2 to 4b ) ), a first magnetic sensor 18a that senses a high-pressure mode and applies a first detection signal, a second magnetic sensor 18b that senses a no-pressure mode and applies a second detection signal, and a control unit ( 120), the steam discharge unit (90b) operating according to the control signal, the heating unit (19c) mounted on the main body or lid to apply heat to the upper side, side, lower side of the inner pot, and the upper, side or bottom of the inner pot The temperature sensing unit 116 that detects the temperature, controls the above-described components to cook cooking corresponding to the current pressure mode by the pressure converting unit, that is, cooking of the high-pressure menu corresponding to the high-pressure mode and the no-pressure menu corresponding to the no-pressure mode. It is composed of a control unit 120 that performs cooking. In this embodiment, the power supply unit 110, the steam discharge unit 90b, the heating unit 19c and the temperature sensing unit 116 are of a degree naturally recognized by those of ordinary skill in the art to which the present invention pertains. Since it corresponds to the technology, the description thereof is omitted.

In detail, the input unit 112 obtains a menu selection input, a menu selection confirmation input, a serving or quantity (amount of food), and a cooking start input from the user, and applies it to the controller 120 . In addition, the input unit 112 may additionally include at least one lower input unit corresponding to each pressure mode, such as a high pressure mode cooking start or a pressureless mode cooking start.

The display unit 114 is mounted on the front surface of the main body or the upper surface of the lid and, in addition to displaying a cookable menu or a process currently in progress, visually or visually or displayed aurally. In addition, the display unit 114 may include a lower display unit that independently displays the current pressure mode on the handle unit (11 in FIG. 2 ) or on the upper surface of the lid near it. Also, the display unit 114 displays menus corresponding to the high-pressure mode and the no-pressure mode, respectively, so that the user can select the menus corresponding to the high-pressure mode and the no-pressure mode through the input unit 112 .

The pressure converter operates independently of the control unit 120 and performs at least a change between the high-pressure mode and the no-pressure mode by the operation of the handle part (11 in FIG. 2 ) that rotates within a certain angular range by the user's external force. Corresponds to, the configuration and operation of the pressure converter is described in detail in Figures 2 to 4b below.

Also, the first magnetic sensor 18a and the second magnetic sensor 18b may be implemented as a reed switch or a magnetoresistive sensor (MR), and a detailed description thereof will be provided below.

In addition, the control unit 120 receives a first or second detection signal from at least one of the first and second magnetic sensors 18a and 18b for the current pressure mode and the pressure mode changed by the pressure converter. It is judged based on the standard or judged and stored. Also, the controller 120 stores cooking pressure information for at least some of the pre-stored menus. The cooking pressure information includes a menu to be cooked in a high pressure mode (high pressure menu) and a menu to be cooked in a no pressure mode (no pressure menu). Hereinafter, a detailed control method of the controller 120 will be described.

Figure 2 is an exploded perspective view showing the lid of the electric cooker according to the present invention, Figures 3a and 3b is a perspective view showing the open and closed state of the pressure converting means in the electric cooker according to the present invention, Figures 4a and 4b are the present invention It is a cross-sectional view showing the open and closed state of the pressure conversion means in the electric cooker according to, Figure 5 is a plan view of the lid portion of the electric cooker according to the present invention.

The electric cooker 100 according to the present invention includes a main body (not shown) having an accommodating space therein, an inner pot accommodated in the accommodating space of the main body, a lid 10 coupled to the upper portion of the main body to open and close, and a pressure-response operating means ( 90), and a pressure conversion means 50. 2 to 3A, the lid 10 is coupled to the upper portion of the main body (not shown) and covers the inner lid portion 10b, which is opened and closed, and the inner lid portion 10b, but a handle portion on one side of the upper surface portion ( 11) is provided with an outer lid portion (10a) provided. Hereinafter, it is preferable to understand that one side is directed toward the open end 17 of the lid 10 , and the other side is directed toward the hinge connection portion 16 of the lid 10 . The handle unit 11 is provided to interlock with the inner pot locking means for locking the inner pot. Here, the inner pot locking means may be provided with a locking ring 20, etc. which is rotatably coupled to the lower surface of the inner lid part 10b and is selectively locked to the flange part according to the rotation angle, but is not limited thereto. For example, a plurality of locking projections 21 protrude inward in the radial direction to correspond to each flange portion on the inner periphery of the locking ring 20 .

Here, the handle base part 30 is connected to the lower end of the handle part 11 , and the handle base part 30 includes a support part 30c and a locking ring interlocking part protruding from one end and the other end of the support part 30c. (30a) and a lever interlocking portion (30b). At this time, the support portion 30c is key-coupled to the lower end of the handle portion 11 on the upper surface portion, and the support protrusion 14 of the inner lid portion 10b is inserted into the rotation support groove portion 34 formed on the lower surface portion to support rotation. do. In addition, the locking ring interlocking portion 30a is formed to extend to overlap the rotational trajectory of the locking ring 20 , and a connection hole 31 is formed through one side overlapping the locking ring 20 . At this time, the connection protrusion 23 protruding from the upper surface of the locking ring 20 is inserted and coupled to the connection hole 31 through the arc-shaped long hole 15 of the inner lid portion 10b.

On the other hand, the lead plate 80 is coupled to the lower surface of the inner lid part 10b, and a sealing packing 82 for sealing the upper opening of the inner pot (not shown) is provided on the lower surface of the lead plate 80 . An inner pot cover (not shown) may be additionally mounted on the lower surface of the lead plate 80, and in this case, the sealing packing 82 for sealing the upper opening of the inner pot (not shown) is the inner pot cover (not shown). ) is provided on the rim. At this time, a plurality of steam flow holes are formed through the other side of the inner pot cover (not shown) so that the steam inside the inner pot is discharged. , 81c) is formed through.

And, between the lead plate 80 and the inner lid portion (10b), but cover each communication hole (81a, 81b, 81c) integrally, the mounting hole (71a) corresponding to each communication hole (81a, 81b, 81c), A control plate 70 through which 71b and 71c is formed is provided. On the other hand, on the other side of the outer lid part (10a), a plurality of upper penetration parts (13a, 13b, 13c) are formed to correspond to each mounting hole (71a, 71b, 71c), and each upper penetration part is formed in the inner lid part (10b). A lower penetrating portion 13d having a size encompassing the forming regions of the portions 13a, 13b, and 13c is formed. At this time, the pressure conversion means 50 is arranged to penetrate the lid 10 through one of the upper through-portion (13a, 13b, 13c) (13a) and the lower through-portion (13d), for discharging the steam inside the inner pot. It is provided so that the selective open/close state is maintained.

And, the pressure-response operation means 90 is arranged to penetrate the lid 10 through the remaining upper through-portions 13b and 13c and the lower through-portion 13d where the pressure converting means 50 is not disposed, and the control unit ( 120) includes a steam outlet (eg, a solenoid valve) 90b that is opened and closed according to the control signal, and a pressure weight valve 90a provided with a weight that is lifted according to the steam pressure inside the inner pot.

And, in the upper surface of the outer lid portion (10a), the mounting groove portion 12 is recessed along the edges of the upper through portions (13a, 13b, 13c), the pressure response operation means (90) and the pressure conversion means (50) The steam cap part 60 for guiding the steam discharge may be detachable. Here, the steam cap part 60 is mounted so that a pressure weight through hole 63 is formed on the other side to surround the outer periphery of the pressure weight valve 90a, and the pressure conversion means 50 and steam are discharged to the guide space 61 formed therein. The upper end of the portion 90b is arranged. At this time, the steam of the pressure conversion means 50 and the steam discharge unit 90b collides with the flow rate control rib (not shown) protruding in the guide space 61 and is decelerated, and the steam guide hole 62 of the other end of the guide space 61 is decelerated. ) can be discharged to the outside.

And, the main body (not shown) is provided with an auxiliary locking means for locking the locking projection (17a) protruding from the open end (17) of the lid (10), the locking ring (20) is unlocked, the pressure switching means (50) ), the closed state of the lid 10 can be stably maintained even in the open no-pressure mode.

On the other hand, the pressure conversion means 50 is preferably provided including the lower cylinder 53, the lifting piston 52, the upper cylinder 51, and the pressing means. Here, the lower cylinder 53 is provided in a hollow cylindrical shape, the pressure conversion flow path (53a) is formed therein, it is arranged to penetrate the lower through-portion (13d). A decut coupling portion 53c is formed at the lower end of the lower cylinder 53, and the communication hole 81a opposite to the lower cylinder 53 is provided as a decut hole machined with a decut cross-section to correspond to the decut coupling portion 53c. This is preferable. At this time, the decut coupling portion 53c is inserted into the decut hole in a state where the sealing O-ring 59 is mounted on the outer periphery, and a thread is formed on the inner periphery of the decut coupling portion 53c inserted into the decut hole to form a cylinder cap 58 . of the outer peripheral side thread may be fastened. And, a plurality of steam discharge holes (58b) are formed through the cylinder cap (58) so that the inner pot internal steam flows, and a fastening step (58a) caught on the lower edge of the decut hole along the outer periphery is formed. At this time, when the cylinder cap 58 is coupled to the decut coupling portion 53c, the edge of the decut hole is engaged between the fastening step 58a and the lower end of the lower cylinder 53, so that the lower cylinder 53 can be fixed, The sealing O-ring 59 may seal between the lower end of the lower cylinder 53 and the edge of the decut hole.

In addition, the lifting piston 52 is coupled to the upper part of the lower cylinder 53 to be elevating, and the pressure conversion passage 53a is opened and closed according to the elevating piston 52 . Here, the lifting piston 52 is formed to have a size exceeding the pressure conversion flow path 53a and is seated on the upper end of the lower cylinder 53 in the vertical direction from the outer end of the seating plate 52a and the seating plate 52a. It includes an extended upper slide tube portion (52c) and a lower slide tube portion (52b). At this time, a shielding protrusion 52f for shielding the pressure conversion passage 53a protrudes from the lower surface of the seating plate 52a, and an arc-shaped conversion discharge hole 52e divided into a plurality along the periphery of the shielding protrusion 52f. ) is formed through

In addition, the upper cylinder 51 is provided in a hollow cylindrical shape is disposed to pass through the upper through-portion (13a). At this time, the space between the upper cylinder 51 and the upper penetrating portion 13a is closed by a tubular sealing member 57, and a ring-shaped sealing groove 51c is recessed in the upper outer periphery of the upper cylinder 51 to form a tubular sealing member ( 57) of the inner circumferential side sealing protrusion 57a may be supported by being caught. In addition, a plurality of divided arc-shaped column fastening portions 51b are provided at the lower end of the upper cylinder 51 , and threads are formed on the inner periphery of the column fastening portions 51b. At this time, the upper cylinder 51 can be fixed to the lower cylinder 53 as the column fastening part 51b passes through the switching discharge hole 52e and is fastened to the upper outer periphery 53d side thread of the lower cylinder 53. have. In addition, it is preferable that the scattering prevention plate 51f is formed to protrude inward in the radial direction on the inner periphery of the upper cylinder 51 .

On the other hand, the lower slide pipe portion (52b) is provided with an inner diameter exceeding the upper outer diameter of the lower cylinder (53), the upper slide tube portion (52c) is provided with an inner diameter exceeding the lower outer diameter of the upper cylinder (51), the lifting piston 52 may be mounted to surround the outer periphery of the lower cylinder 53 and the outer periphery of the upper cylinder 51 .

In addition, ring-shaped sealing grooves 51d and 53b are recessed in the lower outer periphery of the upper cylinder 51 and the upper outer periphery of the lower cylinder 53 so that the sealing members 55 and 56 are mounted. At this time, it is preferable that a plurality of sealing ribs (55a, 56a) protrude from the outer periphery of the sealing members (55, 56).

On the other hand, on the outer periphery of the lower slide tube portion (52b), it is preferable that the lifting wing portion (52d) protrudes outward in the radial direction. At this time, the lifting blade portion (52d) may be pressed downward by the pressing means to maintain the closed state of the pressure conversion passage (53a). Here, the pressing means may be provided with an elastic member 54 such as a spring having an elastic modulus corresponding to the abnormal pressure so that the pressure conversion passage 53a is forcibly opened at a preset abnormal pressure or more. In detail, a spring support protrusion 51a is protruded from the outer periphery of the upper cylinder 51, and a washer member 51e having a size exceeding the diameter of the elastic member 54 is mounted at the lower end of the spring support protrusion 51a. And, as the elastic member 54 is interposed between the lifting wing portion 52d and the washer member 51e, the close contact of the shielding protrusion 52f and the pressure conversion passage 53a may be maintained.

On the other hand, between the pressure conversion means 50 and the handle base portion 30 is provided with a lift lever portion 40 that is linearly moved to one side and the other side in response to the rotation of the lever interlocking portion 30b. In detail, the lift lever part 40 includes a connection body part 40c provided in a plate shape with an area covering the rotation trajectory of the lever interlocking part 30b and a pressure conversion means 50 from the other end of the connection body part 40c. It includes a first lever body portion 40a and a second lever body portion 40b extending so as to be in contact with both sides of the outer periphery of the . At this time, the first lever body part 40a and the second lever body part 40b move in a straight line so as to maintain the overlapping state with the elevating wing part 52d and the lower surface part during linear movement. It is preferable to form an extension. In addition, a guide long hole 44a is formed through the first lever body portion 40a at one end adjacent to the connection body portion 40c. At this time, when the screw member 18c passes through the guide long hole 44a and is fastened to the inner lid part 10b, the washer member provided in the head of the screw member 18c supports the upper edge of the guide long hole 44a. However, the inner surface of the guide long hole 44a is guided along the outer periphery of the screw member 18c, so that the lift lever part 40 can be linearly moved to one side and the other side.

In addition, the connecting body portion 40c is penetrated so that the interlocking protrusion 32 protruding from the lower end of the lever interlocking portion 30b is inserted, and the crank hole 41 is formed extending in a tangential direction from one end of the rotational trajectory of the interlocking protrusion 32 . ) is provided. At this time, the rotational trajectory of the interlocking protrusion 32 means a curve connecting the position of the interlocking protrusion 32 from the position of the interlocking protrusion 32 during the locking rotation of the locking ring 20 to the position of the interlocking protrusion 32 during the unlocking rotation, but at one end of the rotational trajectory. is preferably understood to mean the position of the interlocking protrusion 32 during lock rotation of the locking ring 20 . Accordingly, when the handle base part 30 is rotated, the interlocking protrusion 32 draws an arc and moves in the transverse direction along the inside of the crank hole 41 , but pulls one edge of the crank hole 41 to pull the lift lever part 40 ) can be moved linearly to one side. And, when the handle base part 30 is rotated in the opposite direction, the interlocking protrusion 32 is moved in a circular arc in the opposite direction, and the lift lever part 40 can be linearly moved to the other side by pushing the other edge of the crank hole 41 .

And, on the upper surface of the first lever body part 40a and the second lever body part 40b, when the lift lever part 40 moves in a straight line, a lift protrusion part 43 along the edge in contact with the outer periphery of the pressure switching means 50 is provided. ) is thrown out. At this time, the lift protrusion part 43 is formed along the portion facing the lifting wing part 52d when the lift lever part 40 moves in a straight line. This is preferable.

3A and 4A, when the handle 11 is rotated to release the lock while the lift lever part 40 is moved to the other side, the lift lever part 40 is pulled to one side and the lifting blade part 52d is It slides along the inclined surface of the lift protrusion 43 and rises. And, when the lifted lifting blade part 52d is supported by the highest end 43b of the lift protrusion part 43, the pressure conversion flow path 53a is completely opened, and the open state can be maintained. At this time, the steam inside the inner pot is a steam flow hole, a steam discharge hole (58b), a communication hole (81a), a pressure conversion flow path (53a), a conversion discharge hole (52e), the hollow of the upper cylinder (51), the steam cap part (60) It can be discharged to the outside through Accordingly, the steam inside the inner pot is continuously discharged and cooking can be performed in a pressureless mode in which the inner pressure inside the inner pot is not increased.

In addition, as shown in FIGS. 3B and 4B, when the handle 11 is locked and rotated in a state in which the lift lever part 40 is moved to one side, the lift lever part 40 is pushed to the other side and the lifting blade part 52d. is lowered by sliding along the inclined surface of the lift protrusion (43). And, when the lifting blade part 52d and the lowest end 43a of the lift protrusion part 43 are disposed to face each other, upward pressure on the lifting blade part 52d is released, and the lifting piston 52 is lowered and the pressure conversion flow path (53a) can be completely closed. At this time, since the lowering state of the lifting piston 52 is maintained by the pressurizing means 54, the steam inside the inner pot flows to the pressure-responding operation means 90 through the steam flow hole, and is selectively discharged according to the internal pressure of the inner pot. The internal pressure can be maintained at a constant level. That is, when the pressure converting means 50 is closed, the inner pressure of the inner pot is increased to cook in the high pressure mode, and the inner pressure of the inner pot is raised to a certain level or higher or the pressure response operation means by the control of the control unit 120 . (90) is opened, the inner pot steam can be discharged to the outside through the steam flow hole, pressure-response operating means (90), the steam cap unit (60).

On the other hand, it is preferable that the locking ring 20 is provided with a pair of markers 22a and 22b that are disposed to be spaced apart from each other in the locking rotational direction and the unlocking rotational direction to indicate the rotational direction. At this time, the markers 22a and 22b may be provided with permanent magnets, etc., and installed on the rotational trajectory of each marker 22a and 22b on the upper surface of the inner lid part 10b, At least one or more first and second magnetic sensors 18a and 18b are provided to sense a magnetic force. The first magnetic sensor 18a is disposed corresponding to the position of the first marker 22a on the lock rotation direction side when the locking ring 20 is locked, and the second magnetic sensor 18b is used to unlock the locking ring 20 . It is arranged to correspond to the position of the second indicator 22b on the side of the unlocking rotation direction at the time of unlocking. When the locking ring 20 is locked, the first magnetic sensor 18a detects the magnetic force of the first marker 22a and applies a first detection signal to the controller 120. When the locking ring 20 is unlocked, the first magnetic sensor 18a detects the magnetic force of the first marker 22a. The second magnetic sensor 18b senses the magnetic force of the second marker 22b and applies a second detection signal to the controller 120 .

As described above, the electric cooker has a steam flow hole, a steam discharge hole 58b, a communication hole 81a, a pressure conversion flow path 53a, a switch discharge hole 52e, a hollow of the upper cylinder 51 and a steam cap part ( 60), which consists of a first discharge path passing between the inner pot and the outside of the body (or lid), a steam flow hole and a pressure-response operating means 90, and the operation (or It consists of a second discharge path that penetrates and blocks between the inside of the inner pot and the outside of the main body by the opening and closing operation), and selectively opens and closes the first discharge path and the second discharge path so that the steam inside the inner pot is discharged into the first discharge path or the second discharge path. It is the action of the pressure transducer to selectively discharge into the discharge path. This pressure converting unit is composed of a handle unit 11, a locking ring 20, a handle base unit 30, a lift lever unit 40 and a pressure converting means 50, and by a chain operation between them, the pressure is converted. Opening/closing of the flow path 53a is performed, the opening (fully opening) of the pressure conversion flow path 53a is in a non-pressure mode (selection of the first discharge path), and closing (fully closing) of the pressure converting flow path 53a is a high pressure mode. (selection of the second discharge route).

The above-described pressure converter is a case in which the first discharge path and the second discharge path are separated and independent. However, in the pressure converter, the first discharge path for the no-pressure mode and the second discharge path for the high-pressure mode share a certain space in series It may be arranged in multiple stages. In the case of such a series multi-stage arrangement, it is possible to select a pressure-free mode and a high-pressure mode according to the opening and closing operations of each of the first and second discharge paths. For example, when the first discharge path for the pressure-free mode is opened, the pressure-free mode may be operated, and when the first discharge path for the pressure-free mode is closed, the high-pressure mode may be operated through the second discharge path for the high-pressure mode. Conversely, when the second discharge path for the high-pressure mode is closed, the operation may be performed in the no-pressure mode, and when the second discharge path for the high-pressure mode is opened, the operation may be performed in the high-pressure mode. Accordingly, the pressure converter is independent or arranged in series multi-stage, and includes a device for selecting a high-pressure mode and a no-pressure mode by opening and closing a plurality of discharge paths penetrating and blocking between the inner pot (or accommodating space) and the outside of the main body.

5 is a plan view of the lid part of the electric cooker according to the present invention. As shown in FIG. 5 , when the handle part 11 is positioned at the position L1, the second discharge path is selected in the high-pressure mode, and when the handle part 11 is positioned at the position L2, it is returned to the no-pressure mode. 1 When the exhaust path is selected. However, depending on the rotation angle of the handle portion 11, when the handle portion 11 is positioned between the positions L1 and L2 (intermediate position), the pressure conversion flow path 53a is partially opened or maintained in a closed state. can be In such an intermediate position, since the control unit 120 does not receive a detection signal from any of the first magnetic sensor 18a and the second magnetic sensor 18b, the handle unit 11 does not receive the detection signal. It can be determined that is located at the intermediate position.

Table 1 shows at least four modes that the controller 120 can determine by receiving and not receiving the first and second sensing signals from the first and second magnetic sensors 18a and 18b.

mode first detection signal second detection signal judgment One reception not received high pressure mode 2 not received reception no pressure mode 3 not received not received error mode 4 reception reception failure mode

Mode 4 is a case in which the control unit 120 receives both the first and second detection signals, when any one of the first and second magnetic sensors 18a and 18b is in a short circuit state and the other sensors are in a normal state; , the first and second magnetic sensors 18a and 18b are all in a short circuit state. The control unit 120 determines mode 4 as a failure mode.

Mode 3 is a case in which the control unit 120 does not receive both the first and second detection signals, and regardless of whether the handle unit 11 is in an intermediate position or the position of the handle unit 11 , the first and second magnetic fields This is a case in which the sensors 18a and 18b are both disconnected. The controller 120 determines mode 3 as an error mode.

Mode 2 is a case in which the control unit 120 receives the second detection signal without receiving the first detection signal, and the first and second magnetic sensors 18a and 18b are both in a normal state or the first magnetic sensor ( 18a) is a disconnected state, the second magnetic sensor 18b is in a normal state, or the first magnetic sensor 18a is in a normal state and the second magnetic sensor 18b is in a short-circuited state. The controller 120 determines the mode 2 as the no-pressure mode.

Mode 1 is a case in which the control unit 120 receives the first detection signal and does not receive the second detection signal, wherein the first and second magnetic sensors 18a and 18b are both in a normal state or the first magnetic sensor ( 18a) is in a normal state, the second magnetic sensor 18b is in a disconnected state, or the first magnetic sensor 18a is in a short-circuited state and the second magnetic sensor 18b is in a normal state. The control unit 120 determines that mode 1 is a high-pressure mode.

It should be understood that the pressure mode in this embodiment includes an error mode and a failure mode as well as a high pressure mode and no pressure mode determined by the control unit 120 through the first and second detection signals. That is, the control unit 120 uses the reception and non-reception of the first and second detection signals, as well as the high-pressure mode and the no-pressure mode, as well as the electrical state of at least one of the first and second magnetic sensors 18a and 18b ( short circuit state and/or disconnection state) may be determined.

6 is a flowchart of a control method of the electric cooker of FIG. 1 . The control method of the present invention starts as power is supplied to each component through the power supply unit 110 .

In step S1, the control unit 120 determines whether there is a change in the current pressure mode. For this determination, the controller 120 checks whether there is a change in the reception and non-reception states of the first and second detection signals in the current pressure mode. If there is a change in the current pressure mode, the process proceeds to step S15, otherwise, since there is no change or rotation of the handle unit 11, the process proceeds to step S3.

In step S3, the control unit 120 determines the current pressure mode by checking the reception and non-reception states of the first and second detection signals. The current pressure mode corresponds to one of the four modes in Table 1.

In step S5, the control unit 120 determines whether the current pressure mode is an error mode. If the current pressure mode is the error mode, the process proceeds to step S7; otherwise, the process proceeds to step S9.

In step S7, the control unit 120 includes changing the position of the handle unit 11 to a position other than the high pressure or no pressure position (intermediate position), or changing the handle unit 11 to a high pressure or no pressure position by operating the handle unit 11 Error indication is performed visually or aurally. At this time, the control unit 120 may ignore or discard the input through the input unit 112 to induce the user to operate the handle unit 11 , and the current pressure mode is the high pressure mode or the no pressure mode. It ends when it is determined to be a mode. By step S7, the control unit 120 induces the user to operate the electric cooker in the high-pressure mode or the non-pressure mode, so that the control unit 120 mechanically determines the high-pressure mode or the non-pressure mode stably in a state in which the high-pressure mode or the non-pressure mode is stably determined. Cook or cook without pressure. The control unit 120 performs step S7, and proceeds to step S1.

In step S9, the control unit 120 determines whether the current pressure mode is a failure mode. If the current pressure mode is the failure mode, the process proceeds to step S11, otherwise, since the current pressure mode is the high pressure mode or the no pressure mode, the process proceeds to step S13.

In step S11, the control unit 120 visually or aurally displays the failure of the electric cooker (the first and second magnetic sensors 18a and 18b). In addition, the control unit 120 ignores or discards the input from the input unit 112 so as not to perform control according to any input, thereby promoting user safety.

In step S13 , the controller 120 displays the maintenance of the high pressure mode or the no pressure mode, which is the current pressure mode, visually or audibly, and alerts the user by notifying the user of the current pressure mode. The controller 120 displays the current pressure mode differently from the high-pressure mode and the no-pressure mode. For example, when the current pressure mode is maintained in the high pressure mode, the control unit 120 turns on the most recently performed high pressure menu and the [High Pressure] display on the display unit 114, for example, in red, and also on the lower display unit. Turns on the red [High Pressure] indicator. In addition, when the current pressure mode is maintained as the no-pressure mode, the control unit 120 displays the most recently performed no-pressure menu and the [No-Pressure] display on the display unit 114 by illuminating blue, for example, and also in the lower display unit in blue color. [No pressure] indicator of [No pressure] is turned on.

In step S15, the control unit 120 determines the changed pressure mode by checking the reception and non-reception states of the first and second detection signals, and the determined pressure mode (ie, the changed pressure mode) is recognized as the current pressure mode do.

In each of steps S17 to S23, the same process as that of steps S5 to S11 is performed.

In step S25, the control unit 120 visually or aurally displays the change of the high pressure mode or the no pressure mode, which is the current pressure mode, to alert the user by notifying the user of the current pressure mode. The control unit 120 differently displays a case in which the non-pressure mode is changed to the high-pressure mode and a case in which the high-pressure mode is changed to the non-pressure mode. For example, when changing from the no-pressure mode to the high-pressure mode, the control unit 120 blinks the high-pressure menu for a certain period of time, turns on the no-pressure menu, and visually or audibly displays the change to the high-pressure mode on the display unit 114 after , blinks only the most recently performed high-pressure menu, turns on other high-pressure menus other than the flashing high-pressure menu, and displays the [High Pressure] indication on the display unit 114, for example, as a red light, and also on the lower display high pressure] indicator is turned on. In addition, when changing from the high-pressure mode to the no-pressure mode, the control unit 120 blinks the no-pressure menu for a certain period of time, turns on the high-pressure menu, and visually or aurally displays the change to the no-pressure mode on the display unit 114, and then Only the recently performed no pressure menu menu is flashed, other no pressure menus other than the flashing no pressure menu are turned on, the [No pressure] indication is displayed on the display unit 114, for example, as a blue light, and the blue [No pressure menu] is displayed on the lower display unit as well. ] indicator is turned on.

In step S27 , the control unit 120 determines whether the user has completed the menu selection by determining whether a menu selection confirmation input for the menu selected by the user is obtained from the input unit 112 . In this case, the controller 120 allows the user to select one of all menus (ie, the high-pressure menu and the no-pressure menu) regardless of the current pressure mode. If the menu selection confirmation input is not obtained and the selection of the menu is not completed, the process proceeds to step S29; otherwise, the process proceeds to step S31.

In step S29 , the control unit 120 maintains the display of the current pressure mode, and sequentially flashes the high-pressure menus and the no-pressure menus according to a menu selection input from the input unit 112 . For example, when the current pressure mode is the high-pressure mode, the controller 120 blinks the most recently performed high-pressure menu, turns on other high-pressure menus and no-pressure menus other than the high-pressure menu, and displays the menu from the input unit 112 . Whenever a selection input is obtained, the blinking state of the most recently performed high-pressure menu is sequentially moved to other high-pressure menus and no-pressure menus.

Additionally, in step S27, when the control unit 120 obtains the menu selection confirmation input, the menu that flickers when the menu selection confirmation input is obtained is determined and stored as the menu selected by the user.

In step S31 , the control unit 120 determines whether a cooking start input is obtained from the input unit 112 . If the cooking start input is obtained, the process proceeds to step S33; otherwise, the process proceeds to step S27. Alternatively, the control unit 120 proceeds from step S31 to step S29 or repeatedly performs step S31 until a cooking start input is obtained. In the case of proceeding from step S31 to step S27 or S29, if the control unit 120 additionally acquires a menu selection input and a menu selection confirmation input through the input unit 112, another menu is selected instead of the previously selected menu It is also possible to change and save the menu selected by the user. For example, if the previously selected menu is samgyetang, but the menu is changed to high pressure steamed, the controller 120 stores high pressure steamed as a menu selected by the user instead of samgyetang.

In step S33, the control unit 120 determines whether the menu selected by the user and the current pressure mode correspond. That is, the controller 120 determines that the selected menu and the current pressure mode correspond to a case in which the selected menu is a high pressure menu and the current pressure mode is a high pressure mode, and when the selected menu is a no pressure menu and the current pressure mode is a no pressure mode. judge

In step S35, the control unit 120 controls the heating unit 19c and/or the steam discharge unit 90b based on the detected temperature of the temperature sensing unit 116 to cook the menu selected in the current pressure mode. . For example, in the high-pressure mode, the controller 120 controls the heating unit 19c and/or the steam discharging unit 90b based on the temperature detected by the temperature sensing unit 116 according to the high-pressure cooking algorithm corresponding to the selected menu. ) to control high-pressure cooking. By performing such high-pressure cooking, the control unit 120 provides the user with food having a chewy texture and the like characteristic of high-pressure cooking. In addition, in the case of the no-pressure mode, the controller 120 controls the heating unit 19c based on the temperature detected by the temperature sensing unit 116 according to a pressure-free cooking algorithm corresponding to the selected menu to perform pressure-free cooking. By performing such non-pressure cooking, the controller 120 provides the user with food having a soft texture characteristic of non-pressure cooking.

In step S37 , the control unit 120 visually or audibly displays a correspondence error indicating that there is no correspondence between the selected menu and the current pressure mode on the display unit 114 . That is, when the selected menu is a high-pressure menu, the current pressure mode is a no-pressure mode, and the selected menu is a no-pressure menu, and the current pressure mode is a high-pressure mode. cannot provide the desired cooking quality. Accordingly, the controller 120 recognizes the corresponding error to the user and proceeds to step S1 to induce the user to change the pressure mode or change the menu.

Steps (S1) to (S25) described above are menu display processes, steps (S27) to (S29) described above are menu selection processes, and steps (S31) to (S37) described above may be referred to as cooking processes. .

In steps S27 and S29, the control unit 120 displays all menus regardless of the current pressure mode, and allows the user to select one menu from among all the menus (hereinafter, 'first How to display and select menus') has been described. When the first menu display and selection method is applied, the control unit 120 must perform steps S33 and S37.

In addition, as the second menu display and selection method, in step S27 , the controller 120 may select only a menu corresponding to the current pressure mode from among a plurality of menus. That is, when the control unit 120 determines the current pressure mode as the high pressure mode, only the menus corresponding to the high pressure mode are selected through the display unit 114 . In order to implement the second menu display and selection method, the control unit 120 blinks the most recently performed menu among the menus corresponding to the current pressure mode in step S27, and in addition to the flashing menu, The first display method of turning on only the menus and turning off the menus of other pressure modes, or flashing the most recently performed menu among the menus corresponding to the current pressure mode, and all menus (high pressure and no pressure) A second display method of illuminating the menus) on the display unit 114 is possible. However, in the second menu display and selection method, the controller 120 may display according to the first or second display method described above, and only select a menu corresponding to the current pressure mode. In step S29 , the display of the current pressure mode is maintained, and only the menus corresponding to the current pressure mode are sequentially flickered according to the menu selection input from the input unit 112 . In this case, the control unit 120 maintains the same menu display according to the first or second display method other than the flickering menu. For example, when the current pressure mode is the high-pressure mode and the first display method is applied, the controller 120 blinks the most recently performed high-pressure menu, turns on only high-pressure menus other than the flashing high-pressure menu, and turns on the no-pressure menu turns off, and whenever a menu selection input is obtained from the input unit 112, the blinking state of the most recently performed high-pressure menu is sequentially moved only to other high-pressure menus. As another example, when the current pressure mode is the no-pressure mode and the second display method is applied, the controller 120 blinks the most recently performed no-pressure menu, turns on all menus other than the blinking no-pressure menu, and the input unit ( 112), the blinking state of the most recently performed no pressure menu is sequentially moved only to other no pressure menus whenever a menu selection input is obtained from the 112). In addition, when the second menu display and selection method is performed, the control unit 120 does not need to perform steps S33 and S37, and when the cooking start input is obtained in step S31, the process proceeds to step S35. Thus, cooking of the selected menu corresponding to the current pressure mode is performed.

7A and 7B are exemplary embodiments displayed to a user through the display unit 114 . 7A and 7B illustrate a case in which a first display method among the second menu display and selection methods is applied.

In the case of Figure 7a, the control unit 120 turns on the high pressure menus (eg, super grain, brown rice / germinated, samgyetang, high pressure steamed, mixed grains, high heat power, nurungji) and [high pressure] display in the high pressure mode, Grinding rice, which is the most recently performed high-pressure menu, is displayed on the display unit 114 by blinking. Also, the control unit 120 turns off the no-pressure menus.

In the case of FIG. 7B , the control unit 120 lights the no-pressure menus (eg, ramen, baby food, non-pressure steamed, healthy porridge) and [no pressure] in the no pressure mode, and the most recently performed no pressure menu. The polished rice is displayed on the display unit 114 by blinking. Also, the control unit 120 turns off the high-pressure menus.

FIG. 8 is a control flowchart when a pressure mode is changed in the menu selection process of FIG. 6 . The controller 120 performs the control of FIG. 8 while performing the menu selection process of FIG. 6 .

In step S41, the control unit 120 determines whether there is a change in the current pressure mode. For this determination, the controller 120 checks whether there is a change in the reception and non-reception states of the first and second detection signals in the current pressure mode. If there is a change in the current pressure mode, the process proceeds to step S43, otherwise, since there is no change or rotation of the handle unit 11, the process proceeds to step S27 (or step S29).

In step S43 , the controller 120 determines the changed pressure mode, and the determined pressure mode (ie, the changed pressure mode) is recognized as the current pressure mode.

In step S45, the control unit 120 performs the same as in step S5, and if the current pressure mode is the error mode, proceeds to step S47, otherwise proceeds to step S51.

In step S47, the control unit 120 includes changing the position of the handle unit 11 to a position other than the high pressure or no pressure position (intermediate position) or changing the handle unit 11 to a high pressure or no pressure position to perform an error display and proceed to step S49. In this case, the controller 120 may ignore or discard the input from the input unit 112 until the current pressure mode is changed back to the high-pressure mode or the no-pressure mode in steps S27 and S29.

In step S49, the control unit 120 determines whether there is a change in the current pressure mode in the same manner as in step S41. Step S49 is a process of enticing the user to change the pressure mode to the high pressure mode or the no pressure mode while performing the error display of step S47. If there is a change in the current pressure mode, the process proceeds to step S43, otherwise, step S49 is performed.

In addition, when receiving a menu selection input or a cooking start input from the input unit 112 while performing steps S47 and/or S49, the control unit 120 sets the current pressure mode to a pressure mode corresponding to the selected menu. A voice or message for guiding to change to , may be displayed visually and/or audibly through the display unit 114 .

In step S51, the control unit 120 determines whether the current pressure mode is a failure mode in the same manner as in step S9. If the current pressure mode is the failure mode, the process proceeds to step S53; otherwise, the process proceeds to step S55.

In step S53, the control unit 120 performs the fault indication in the same manner as in step S11 and terminates the control process so that no additional operation is performed, thereby promoting user safety.

In step S55, the control unit 120 displays the change of the current pressure mode, the high-pressure mode or the no-pressure mode, visually or audibly, as in the step S25, and informs the user of the current pressure mode to draw the user's attention. ventilate The controller 120 proceeds to step S27 (or step S29) after step S55 to select a menu corresponding to the changed current pressure mode.

Step S41 of FIG. 8 is performed until a cooking start input is obtained in each of the above-described first and second menu display and selection methods, and when the pressure mode is changed, steps S43 to S55 are performed. are performed sequentially.

9 is an example of the input unit 112 . The input unit 112 of FIG. 9 is implemented in a touch panel method, the first input unit 112a is a menu selection input, the second input unit 112b is a menu selection confirmation input, and the high-pressure cooking input unit 112c is a high-pressure mode. It is a cooking start input (ie, high-pressure cooking start input), and the no-pressure cooking input unit 112d is a cooking start input (ie, no-pressure cooking start input) in the pressureless mode.

10A and 10B are other embodiments of the cooking start input process of FIG. 6 . The embodiment of FIG. 10A corresponds to a control method in the electric cooker to which the input unit 112 of FIG. 9 is applied, and is performed after step S27 of FIG. 6 to which the second menu display and selection method is applied.

In step S61, the control unit 120 determines whether a high-pressure cooking start input is obtained from the input unit 112 (or the high-pressure cooking input unit 112c) subsequent to the step S27. If the high-pressure cooking start input is obtained, the process proceeds to step S63; otherwise, the process proceeds to step S69.

In step S63, the control unit 120 determines whether the current pressure mode is a high pressure mode. If the current pressure mode is the high pressure mode, the process proceeds to step S65, otherwise, since the current pressure mode is the no-pressure mode, the process proceeds to step S67. Alternatively, in the second menu display and selection method, since the user can select a menu only from among the menus corresponding to the current pressure mode, the control unit 120 has already selected the menu corresponding to the current pressure mode before step S63. Since it is stored, it may be determined whether the selected menu is a high-pressure menu, and the same result as in step S63 may be checked.

In step S65, the control unit 120 controls the heating unit 19c and the steam discharge unit 90b based on the temperature detected by the temperature sensing unit 116 to perform high-pressure cooking for the selected menu (high pressure menu). carry out

In step S67, the control unit 120 displays an error indication indicating that the high-pressure mode start input has been obtained instead of the no-pressure mode start input on the display unit 114 visually or aurally to draw the user's attention and step S1 proceed with Alternatively, the control unit 120 proceeds from step S67 to step S27 to select a new menu, or proceeds to step S61 to input a cooking start input corresponding to the current pressure mode through the input unit 112. induce

In step S69 , the control unit 120 determines whether a pressureless cooking start input is obtained from the input unit 112 (or the pressureless cooking input unit 112d). If the pressureless cooking start input is obtained, proceed to step S71, otherwise proceed to step S27 to select a new menu, or proceed to step S61, where the control unit 120 receives the input unit 112 from the input unit 112. Wait for input to start high-pressure cooking or input to start non-pressure cooking.

In step S71, the control unit 120 determines whether the current pressure mode is the no-pressure mode. If the current pressure mode is the no-pressure mode, the process proceeds to step S73 , otherwise, since the current pressure mode is the high-pressure mode, the process proceeds to step S75 . Alternatively, in the second menu display and selection method, since the user can select a menu only from among the menus corresponding to the current pressure mode, the controller 120 has already selected the menu corresponding to the current pressure mode before step S69. Since it is stored, it may be determined whether the selected menu is a no-pressure menu and the same result as in step S71 may be confirmed.

In step S73 , the control unit 120 controls the heating unit 19c based on the temperature detected by the temperature sensing unit 116 to perform pressureless cooking on the selected menu (no pressure menu).

In step S75, the control unit 120 displays an error indication indicating that the no-pressure mode start input has been obtained instead of the high-pressure mode start input on the display unit 114 visually or aurally to draw the user's attention, step S1 ) to proceed. Alternatively, the control unit 120 proceeds from step S75 to step S27 to select a new menu, or proceeds to step S61 to input a cooking start input corresponding to the current pressure mode through the input unit 112. induce

10A, the control unit 120 allows the current pressure mode and the cooking start input (high pressure cooking start input or no pressure cooking start input) to correspond to the cooking process before the cooking process of steps S65 and S73. Continuously informs the user of pressure mode.

FIG. 10B corresponds to a control method in the electric cooker to which the input unit 112 of FIG. 9 is applied, and is performed after step S27 of FIG. 6 to which the first menu display and selection method is applied.

Step S61 of FIG. 10B is the same as step S61 of FIG. 10A.

In step S63-1, the controller 120 determines whether the current pressure mode is the high-pressure mode and whether the selected menu is the high-pressure menu. If the current pressure mode is the high pressure mode and the selected menu is the high pressure menu, the process proceeds to step S65; otherwise, the process proceeds to step S67-1.

Step S65 is the same as step S65 of FIG. 10A because the high-pressure cooking start input, the high-pressure mode, and the selected menu all correspond to high-pressure.

In step S67-1, since the control unit 120 does not correspond to the high pressure cooking start input, the current pressure mode, and any one or more of the selected menu, the pressure mode (no pressure mode) that does not correspond to the high pressure cooking start input and / or an error indication indicating the selected menu (no pressure menu) is displayed on the display unit 114 visually or audibly to draw the user's attention and proceed to step S1. Alternatively, the controller 120 proceeds from step S67-1 to step S27 to select a new menu, or proceeds to step S61 to input a cooking start input corresponding to the current pressure mode and menu to the input unit 112 induce input through

Step S69 is the same as step S69 of 10a.

In step S71-1, the control unit 120 determines whether the current pressure mode is the no pressure mode and whether the selected menu is the no pressure menu. If the current pressure mode is the no-pressure mode and the selected menu is the no-pressure menu, the process proceeds to step S73; otherwise, the process proceeds to step S75-1.

Step S73 is the same as step S73 of FIG. 10A because the no-pressure cooking start input, the no-pressure mode, and the selected menu all correspond to no-pressure.

In step S75-1, since the control unit 120 does not correspond to the no-pressure cooking start input, the current pressure mode, and any one or more of the selected menu without pressure, the pressure mode (high-pressure mode) that does not correspond to the no-pressure cooking start input and / or an error indication indicating the selected menu (high-pressure menu) is visually or aurally displayed on the display unit 114 to draw the user's attention and proceed to step S1. Alternatively, the control unit 120 proceeds from step S75-1 to step S27 to select a new menu, or proceeds to step S61 to input a cooking start input corresponding to the current pressure mode and menu to the input unit 112 induce input through

FIG. 11 is a control flowchart when a pressure mode is changed in the cooking process of FIG. 6 . Since the pressure mode of the pressure converter may be changed by the user, the control unit 120 performs the control of FIG. 11 while performing steps S35 of FIG. 6 and steps S65 and S73 of FIGS. 10A and 10B. do.

In step S81, the control unit 120 determines whether there is a change in the current pressure mode while performing step S35 (or step S65 or step S73). For this determination, the controller 120 checks whether there is a change in the reception and non-reception states of the first and second detection signals in the current pressure mode. If there is a change in the current pressure mode, the process proceeds to step S83; otherwise, since there is no change or rotation of the handle unit 11, the process proceeds to step S35 (or step S65 or S73). .

In step S83, since the current pressure mode is changed and the changed current pressure mode does not correspond to the selected menu, the controller 120 cancels the currently performed cooking and also stops the heating operation of the heating unit 19c.

In step S85 , the control unit 120 notifies that the current pressure mode has been changed during the cooking process, and visually or aurally displays on the display unit 114 that the currently performed cooking is cancelled. After step S85, the controller 120 proceeds to step S1 so that the user can change the pressure mode or change the menu so that the current pressure mode and the menu correspond.

In steps (S83) and (S85), when the pressure mode is changed while cooking according to the no pressure mode algorithm or the high pressure mode algorithm, especially when the pressure mode is changed from the high pressure mode to the no pressure mode, the steam inside the inner pot is Since there is a risk of sudden discharge to cause burns to the user, it is preferable that the control unit 120 cancel the cooking. In addition, due to the change of the pressure mode, the selected menu does not correspond to the changed current pressure mode, and food cooked according to the algorithm corresponding to the pressure mode before the change until the time of change must be cooked with the algorithm of another pressure mode. As a result, there is a problem that the cooking quality of the food may be deteriorated, so it is preferable that the controller 120 cancel the cooking.

As described above, the present invention is not limited to the specific preferred embodiments described above, and anyone with ordinary skill in the art to which the invention pertains can use various methods without departing from the gist of the present invention as claimed in the claims. It goes without saying that modifications are possible, and such modifications are intended to be within the scope of the claims.

110: power unit 112: input unit
114: display unit 116: temperature sensing unit
120: control unit

Claims (41)

An electric cooker comprising: a main body having a receiving space in which an inner pot is accommodated; and a lid coupled to an upper portion of the main body to open and close, the electric cooker;
a pressure converter for selecting a high-pressure mode and a no-pressure mode by opening and closing a plurality of discharge paths penetrating and blocking between the inner pot and the outside of the lid;
first and second detection sensors for respectively sensing the no-pressure mode and the high-pressure mode selected by the pressure converter;
a display unit for displaying pre-stored menus including a high pressure menu and a no pressure menu, and a pressure mode including at least the no pressure mode and the high pressure mode;
and a control unit that determines a current pressure mode according to first and second detection signals from the first and second detection sensors, and visually or aurally displays the current pressure mode on the display unit,
The electric cooker includes an input unit that receives a menu selected and confirmed by a user from among the menus displayed on the display unit, and the control unit displays the pre-stored menus on the display unit and inputs the selected and confirmed menu from the input unit. under,
The control unit determines whether there is a change in the current pressure mode before receiving an input of the selected and confirmed menu from the input unit, or after receiving the selected and confirmed menu from the input unit before obtaining a cooking start input, A first display method of displaying the menus and a pressure mode when there is no change in the current pressure mode, and a second display method of displaying the menus and a pressure mode when there is a change in the current pressure mode, respectively It is performed through the display unit,
The first display method and the second display method are different from each other. delete delete The method of claim 1,
and the control unit performs a menu corresponding to the current pressure mode and performs a most recently performed menu and a first display method of turning on a display of the current pressure mode on the display unit. The method of claim 1,
The control unit blinks the menu corresponding to the changed pressure mode for a certain period of time, turns on menus other than the flashing menu to display the change in the pressure mode visually or aurally, and then responds to the changed pressure mode and most An electric cooker, characterized in that the second display method of turning on the display of the recently performed menu and the changed pressure mode is performed. The method of claim 1,
The control unit performs a first display method of displaying the pre-stored menus on the display unit, and receives the selected and confirmed menu from the input unit. delete 6. The method of claim 5,
The control unit performs the second display method and receives an input of a selected and confirmed menu from the input unit. An electric cooker comprising: a main body having an accommodating space in which an inner pot is accommodated; a lid coupled to the upper portion of the main body to open and close; and a heating unit mounted on the main body or lid to apply heat to the inner pot, the electric cooker comprising:
a pressure converter for selecting a high-pressure mode and a no-pressure mode by opening and closing a plurality of discharge paths penetrating and blocking between the inner pot and the outside of the lid;
first and second detection sensors for respectively sensing the no-pressure mode and the high-pressure mode selected by the pressure converter;
a display unit for displaying pre-stored menus including a high pressure menu and a no pressure menu, and a pressure mode including at least the no pressure mode and the high pressure mode;
and a control unit that determines a current pressure mode according to first and second detection signals from the first and second detection sensors, and visually or aurally displays the current pressure mode on the display unit,
The electric cooker includes an input unit that receives a menu selected and confirmed by a user from among the menus displayed on the display unit, and the control unit displays the pre-stored menus on the display unit and inputs the selected and confirmed menu from the input unit. under,
The control unit obtains a cooking start input from the input unit, determines whether the current pressure mode and the selected and confirmed menu correspond,
When the current pressure mode and the selected and confirmed menu do not correspond, a corresponding error indicating that the current pressure mode and the selected and confirmed menu do not correspond is displayed on the display unit, and the selected and confirmed menu from the input unit is displayed again Electric cooker, characterized in that the input. 10. The method of claim 9,
When the current pressure mode and the selected menu correspond to each other, the control unit performs cooking by controlling the heating unit using a cooking algorithm according to the current pressure mode. delete 10. The method of claim 9,
The control unit acquires one of a high-pressure cooking start input and a no-pressure cooking start input from the input unit, and determines whether the cooking start input corresponds to the current pressure mode and the selected menu. . 13. The method of claim 12,
When the cooking start input corresponds to the current pressure mode and the selected menu, the controller executes a cooking algorithm corresponding to the current pressure mode. 13. The method of claim 12,
When any one of the cooking start input, the current pressure mode, and the selected menu does not correspond, the control unit displays an error indication of the cooking start input on the display unit. 6. The method according to claim 4 or 5,
The control unit is an electric cooker, characterized in that it receives the selected and confirmed menu from among the menus corresponding to the current pressure mode or the changed pressure mode from the input unit. delete delete delete An electric cooker comprising: a main body having an accommodating space in which an inner pot is accommodated; a lid coupled to the upper portion of the main body to open and close; and a heating unit mounted on the main body or lid to apply heat to the inner pot, the electric cooker comprising:
a pressure converter for selecting a high-pressure mode and a no-pressure mode by opening and closing a plurality of discharge paths penetrating and blocking between the inner pot and the outside of the lid;
first and second detection sensors for respectively sensing the no-pressure mode and the high-pressure mode selected by the pressure converter;
a display unit for displaying pre-stored menus including a high pressure menu and a no pressure menu, and a pressure mode including at least the no pressure mode and the high pressure mode;
and a control unit that determines a current pressure mode according to first and second detection signals from the first and second detection sensors, and visually or aurally displays the current pressure mode on the display unit,
The electric cooker includes an input unit that receives a menu selected and confirmed by a user from among the menus displayed on the display unit, and the control unit receives the selected and confirmed menu from among the menus corresponding to the current pressure mode from the input unit. ,
The control unit obtains a cooking start input that is one of a high-pressure cooking start input or a no-pressure cooking start input from the input unit, and determines whether the cooking start input corresponds to the current pressure mode;
When the cooking start input does not correspond to the current pressure mode, the control unit displays an error indication of the cooking start input on the display unit and induces the cooking start input corresponding to the current pressure mode to be input through the input unit Electric cooker, characterized in that. 20. The method of claim 19,
When the cooking start input corresponds to the current pressure mode, the controller controls the heating unit according to a cooking algorithm corresponding to the current pressure mode to cook. delete An electric cooker comprising: a main body having a receiving space in which an inner pot is accommodated; a lid coupled to the upper portion of the main body to open and close; and a heating unit mounted on the main body or lid to apply heat to the inner pot, the electric cooker comprising:
a pressure converter for selecting a high-pressure mode and a no-pressure mode by opening and closing a plurality of discharge paths penetrating and blocking between the inner pot and the outside of the lid;
first and second detection sensors for respectively sensing the no-pressure mode and the high-pressure mode selected by the pressure converter;
a display unit for displaying pre-stored menus including a high pressure menu and a no pressure menu, and a pressure mode including at least the no pressure mode and the high pressure mode;
and a control unit that determines a current pressure mode according to first and second detection signals from the first and second detection sensors, and visually or aurally displays the current pressure mode on the display unit,
The control unit determines whether there is a change in the current pressure mode while performing cooking by controlling the heating unit according to a cooking algorithm,
When there is a change in the current pressure mode, the controller controls the heating unit to cancel the cooking. delete 23. The method of claim 22,
When there is no change in the current pressure mode, the control unit performs the cooking algorithm. An electric cooker comprising a main body having a receiving space in which an inner pot is accommodated, and a lid coupled to an upper portion of the main body to open and close, the electric cooker comprising:
a pressure converter for selecting a high-pressure mode and a no-pressure mode by opening and closing a plurality of discharge paths penetrating and blocking between the inner pot and the outside of the lid;
first and second detection sensors for respectively sensing the no-pressure mode and the high-pressure mode selected by the pressure converter;
a display unit for displaying pre-stored menus including a high pressure menu and a no pressure menu, and a pressure mode including at least the no pressure mode and the high pressure mode;
and a control unit that determines a current pressure mode according to first and second detection signals from the first and second detection sensors, and visually or aurally displays the current pressure mode on the display unit,
The current pressure mode includes an error mode in which the first and second detection signals are not received and a failure mode in which both the first and second detection signals are received. 26. The method of claim 25,
The control unit is an electric cooker, characterized in that, when the current pressure mode is the error mode, display through the display unit to operate the pressure converting unit in the high pressure mode or the no pressure mode. 26. The method of claim 25,
The controller ignores or discards the input through the input unit when the current pressure mode is the error mode. 28. The method of claim 27,
The control unit is an electric cooker, characterized in that when it is determined that the current pressure mode is the high pressure mode or the no pressure mode, ignoring or ending the discarding of the input. delete 26. The method of claim 25,
When the current pressure mode is the failure mode, the controller displays a failure of the electric cooker on the display unit and ignores or discards the input from the input unit. In the control method of the electric cooker selectively performing the high-pressure mode and the no-pressure mode included in the pressure mode, the control method includes:
displaying menus including a high-pressure menu and a no-pressure menu;
receiving confirmation of selection of one menu from among the menus displayed in the display step;
obtaining a cooking start input for the selected and confirmed menu;
Comprising the step of performing cooking for the selected and confirmed menu according to the cooking start input,
The control method includes determining whether the pressure mode is changed during or before performing at least one of the display step, the selection confirmation step, the cooking start input obtaining step, and the menu cooking step,
The control method includes a first display method of displaying the menus and a pressure mode when there is no change in the current pressure mode before the step of obtaining the cooking start input from the display step or the selection confirmation step; performing a second display method of displaying the menus and the pressure mode, respectively, when there is a change in the pressure mode;
The first display method and the second display method are different from each other. 32. The method of claim 31,
The control method corresponds to the changed pressure mode after flashing a menu corresponding to the changed pressure mode for a certain period of time, illuminating menus other than the flashing menu to visually or aurally display the change in the pressure mode, and A method of controlling an electric cooker, characterized in that the second display method of turning on the display of the most recently performed menu and the changed pressure mode is performed. 32. The method of claim 31,
If there is no change in the pressure mode,
The control method of the electric cooker, wherein the control method of the electric cooker, characterized in that performing the most recently performed menu corresponding to the determined pressure mode, and a first display method of displaying the determined pressure mode by turning on the display. delete In the control method of the electric cooker selectively performing the high-pressure mode and the no-pressure mode included in the pressure mode, the control method includes:
displaying menus including a high-pressure menu and a no-pressure menu;
receiving confirmation of selection of one menu from among the menus displayed in the display step;
obtaining a cooking start input for the selected and confirmed menu;
Comprising the step of performing cooking for the selected and confirmed menu according to the cooking start input,
The control method further includes the step of determining whether the determined pressure mode and the selected and confirmed menu correspond between the cooking start input acquisition step and the menu cooking step,
When the determined pressure mode and the selected and confirmed menu correspond,
In the menu cooking step, cooking is performed by a cooking algorithm according to the determined pressure mode,
When the determined pressure mode and the selected and confirmed menu do not correspond,
The control method further includes displaying a corresponding error indicating that the determined pressure mode and the selected and confirmed menu do not correspond, and performing the selection and confirming step again. 32. The method of claim 31,
In the display step, only a menu corresponding to the determined pressure mode among the menus is displayed. In the control method of the electric cooker selectively performing the high-pressure mode and the no-pressure mode included in the pressure mode, the control method includes:
displaying menus including a high-pressure menu and a no-pressure menu;
receiving confirmation of selection of one menu from among the menus displayed in the display step;
obtaining a cooking start input for the selected and confirmed menu;
Comprising the step of performing cooking for the selected and confirmed menu according to the cooking start input,
The control method includes determining whether the pressure mode is changed during the execution of the menu cooking step,
The control method may include canceling the cooking when the pressure mode is changed in the menu cooking step. In the control method of the electric cooker selectively performing the high-pressure mode and the no-pressure mode included in the pressure mode, the control method includes:
displaying menus including a high-pressure menu and a no-pressure menu;
receiving confirmation of selection of one menu from among the menus displayed in the display step;
obtaining a cooking start input for the selected and confirmed menu;
Comprising the step of performing cooking for the selected and confirmed menu according to the cooking start input,
The control method includes determining the pressure mode during or before performing at least one of the display step, the selection confirmation step, the cooking start input obtaining step, and the menu cooking step,
The pressure mode control method of the electric cooker, characterized in that it additionally includes an error mode and a failure mode. 39. The method of claim 38,
The control method of the electric cooker further comprises: when the determined pressure mode is the error mode, indicating that the determined pressure mode is to be operated as the high pressure mode or the no pressure mode. 39. The method of claim 38,
In the control method, when the determined pressure mode is the error mode, the step of ignoring or discarding the input from the input unit provided in the electric cooker until the determined pressure mode is determined to be the high-pressure mode or the no-pressure mode Control method of the electric cooker, characterized in that it additionally comprises. 39. The method of claim 38,
When the determined pressure mode is the failure mode, the control method further includes displaying a failure of the electric cooker and ignoring or discarding an input from an input unit provided in the electric cooker. How to control the cooker.

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