KR19980068425A - Driving control method of electric pressure cooker - Google Patents

Abstract

The present invention combines and separates the rice cooker lid and the inner cylinder by a motor, in the electric pressure cooker to perform cooking by the electronic heating heater, the electric pressure cooker for controlling the driving of the motor, the electronic heating heater and the pressure control device The drive control method of the present invention.

To this end, the present invention is in the electric pressure cooker having a heating means for heating the inner cylinder and the pressure adjusting means for regulating the pressure in the inner cylinder to combine and separate the inner container and the lid to contain rice by the driving force of the motor. When the cooking is started, driving the motor 200 until it is determined that the coupling between the lid 140 and the inner cylinder 130 is completed, and when the driving of the motor 200 is completed, the pressure regulating means 170 Heating the inner cylinder 130 by driving the heating means 114 to maintain the pressure inside the inner cylinder to drive cooking, and when the cooking is finished, driving of the heating means 114 is completed. Depressurizing and driving the pressure regulating means 170 to depressurize the pressure in the inner cylinder, and when the depressurization step in the inner cylinder is completed, the motor to separate the inner cylinder 130 and the lid 140. Driving 200.

Description

Driving control method of electric pressure cooker

The present invention relates to a driving control method of an electric pressure cooker, and more particularly, to an electric pressure cooker which can combine and separate a rice cooker lid and an inner cylinder by a motor, and perform cooking by driving an electronic heating heater. The present invention relates to a drive control method of an electric pressure cooker which can control driving of a motor, an electronic heating heater, and a pressure control device according to cooking and cooking completion.

In general, the pressure cooker is to increase the pressure of the inner container containing the rice when cooking by using the boiling point of the water according to the pressure to improve the boiling point of the water to improve the taste of the cooked rice.

The higher the rate at which the starch is alphaized, the higher the sweetness. The higher the rate at which the starch is alphaized, the higher the water temperature is near 100 ° C. In other words, when the pressure of the inner barrel is increased, the boiling point of the water is increased, so that the ratio of alpha in the rice in the inner barrel is increased, and the taste of rice is improved accordingly. This is why rice cooked by a pressure cooker occupies and tastes more than a general cooker.

On the other hand, in order to increase the pressure in the inner cylinder, the inner cylinder in which the rice is contained is sealed so that steam generated during cooking does not leak, and the inside of the inner cylinder is made to be high pressure by the steam. Pressure cooker (Korean Utility Model Publication No. 90-11191), as shown in Figure 1, the hollow body of the rice cooker body 10 of the hollow body with the upper surface is built in the cooker body (1) containing rice The cover 9 is coupled to the opening to be openable and closeable. The bottom of the cover (9) is provided with a pot lid (7) which is sealed and combined with the cooker body (1) when cooking, a plurality of coupling stones (7a) is provided at a predetermined interval on the outer periphery of the pot lid. The opening end of the upper pot body 1 is bent inwardly, and the bent portion is formed with an incision groove 2b into which the engaging stone 7a is inserted when the cover 9 is closed to the main body 10. . A coupling wheel 4 having the same width as that of the bent portion is rotatably coupled to the bottom of the bent portion, and an incision groove 4b and a locking portion 4c are formed in the coupling wheel. Reference numeral 5 is a coupling wheel handle for rotating the coupling wheel.

The method of combining and separating the pot lid and the pot body of the conventional electric pressure cooker as described above will be briefly described. The cover 9 is covered with the main body 10 so that the coupling protrusion 7a of the lid is inserted into the cutout groove 4b of the pot body. Then, when the handle 5 is rotated in one direction, the locking portion 4c of the coupling wheel is caught by the engaging stone 7a so that the pot lid and the pot body are hermetically coupled, and when the handle is rotated in the other direction, the pot lid and the pot body are It is to be separated.

However, the electric pressure cooker of the conventional configuration as described above can not easily rotate the handle because the pot lid and the pot body is firmly coupled by the residual pressure of the steam remaining inside the cooker body, the handle is also the cooker body Because it protrudes to the outside, there was an unsightly disadvantage.

In addition, the handle also becomes a high temperature due to the high temperature during cooking.If the user grasps the handle to separate the cooker body and the cooker body immediately after cooking is completed, it cannot be caught by bare hands due to high temperature and can reduce heat transfer. There was an inconvenience to remove the pot body by operating the handle.

Accordingly, the present invention has been made in order to solve the above-mentioned problems, the object of the present invention is to provide an electric pressure cooker that can be firmly coupled to the inner cylinder containing the rice cooker lid and the rice is driven by a motor and easily separated. Is in.

Another object of the present invention is to provide an electric heating heater and a pressure regulating device provided to uniformly heat the inner cylinder front and a driving control method of an electric pressure cooker to control the driving of the motor.

1 is a perspective view showing the structure of a conventional electric pressure cooker,

Figure 2 is a perspective view showing the structure of the electric pressure cooker according to the present invention,

3 is a partial perspective view of the electric pressure cooker according to the present invention;

4 is an exploded perspective view of a coupling member and a rotating member of the electric pressure cooker according to the present invention;

Figure 5 (a) is a cross-sectional view showing a separation state of the coupling member of the electric pressure cooker according to the present invention,

Figure 5 (b) is a cross-sectional view showing a coupling state of the coupling member of the electric pressure cooker according to the present invention,

6 is a flowchart showing a driving control method of the electric pressure cooker according to the present invention.

Explanation of symbols on the main parts of the drawings

114 ... electric heating heater, 130 ... inner tube,

140 lid, 150 secondary lid,

170 solenoid valve, 171 steam outlet,

180 rotating member, 190 locking member,

200 ... motor, 210 ... reed switch,

211 ... magnet.

The drive control method of the electric pressure cooker according to the present invention in order to achieve this object is coupled to and separated by the lid and the inner cylinder by a rice cooker body, a lid for opening and closing the rice cooker body, the driving force of the motor is built-in rice In the electric pressure cooker having a means for heating, the heating means for heating the inner cylinder and the pressure regulating means for adjusting the pressure in the inner cylinder, when cooking is selected by the user's key operation, the coupling of the lid and the inner cylinder is completed. Driving the motor until it is determined that, when the drive of the motor is completed to drive the pressure adjusting means to maintain the pressure inside the inner cylinder by heating the inner cylinder by the driving of the heating means to perform cooking Step, when it is determined that cooking is finished, turn off the driving of the heating means and then turn off the driving of the pressure adjusting means. When the inner tube comprising: a reduced pressure in the inner pressure, a reduced pressure step is completed, the inside of the inner tube is characterized in that it includes the step of driving the motor so as to separate the cap within the passage.

Hereinafter, the configuration and the effect according to the preferred embodiment of the present invention will be described in detail.

Figure 2 is a perspective view showing a schematic structure of the electric pressure cooker according to the present invention. In the present invention, as shown in FIG. 2, the cooker body 100 of the hollow body having an upper surface is provided. The hollow portion 111 of the main body 100 has a built-in inner cylinder 130, the upper surface containing the rice is opened, the upper side of the main body 100 is coupled to the opening 131 of the inner cylinder 130 to the inner cylinder ( The lid 140 sealing the 130 is installed to be openable and closed. The front surface of the main body 100 is provided with a key operation unit 120 for operating the electric pressure cooker, one side of the main body 100 is provided with a power supply 113 connected to the key operation unit 120. In addition, when electricity is supplied to the rice cooker through the power supply unit 113 on the bottom of the hollow part 111 of the main body 100, a magnetic force line is generated around the electronic heater so as to self-heat the inner cylinder 130 by the magnetic force ( Not shown) is installed in a shape wound around the inner cylinder and a predetermined interval. Reference numeral 171 denotes a steam discharge hole for discharging steam generated during cooking to the outside of the main body to prevent the inner cylinder from becoming a high pressure above a predetermined pressure, and 170 denotes a solenoid valve for opening and closing the steam discharge hole. 150, 160 is an auxiliary lid and the sealing member which will be described in detail below.

The electric pressure cooker according to the present invention is provided with a means for automatically coupling and separating the lid and the inner cylinder according to the cooking, and the motor to control the driving of the motor by detecting that the lid and the inner cylinder is completely coupled, separated Drive control means are provided.

3 is a partially perspective view of the electric pressure cooker according to the present invention, Figure 4 is an exploded perspective view of the coupling member and the rotating member of the electric pressure cooker according to the present invention. With reference to the bar shown in Figures 3 and 4 will be described below means for coupling and separating the lid and the inner cylinder and motor drive control means.

First, the hook 132 bent outward is formed in the opening 131 of the inner barrel 130, which is cooked by the rice and water, the hook 132 is coupled to the catching portion of the locking member to be described below Or separate. An auxiliary lid 150 formed of a plate having the same size and the same shape as the opening 131 of the inner cylinder 130 is coupled to the bottom of the lid 140. When the lid 140 is coupled to the main body 100, the auxiliary lid 150 is coupled to the opening 131 of the inner cylinder 130 to seal the inner cylinder 130.

Means for coupling and separating the lid 140 and the inner cylinder 130 is made of a rotating member 180 and the locking member 190, the rotating member 180 is provided on the upper surface of the auxiliary lid 150, It rotates by the driving force of the motor 200. The lower surface of the rotating member 180 is screwed to the auxiliary lid 150 is provided with a motor 200 is seated in the case, the lower surface of the rotating member 180 is coupled to the drive shaft of the motor 200 A coupling groove 181 is formed to receive a driving force of the motor to rotate. In addition, a guide path 182 is formed on the surface on which the coupling groove 181 is formed to guide the locking member 190 in a linear reciprocating motion. The guide path 182 is formed in communication with each other, and the radius of the guide member 182 is formed differently based on the center of the rotating member 180.

The locking member 190 is provided with a connection link 191 and the locking portion 192. A plurality of connection links 191 is provided, one side is inserted into the guide path 182, the other side is coupled to the engaging portion 192. The connecting link 191 is inserted into the guide path 182 whose radius is different from the center of the rotating member 180, and when the rotating member 180 is rotated, the connecting link 191 makes a linear reciprocating motion. do. A circular protrusion 191a is formed at the side of the connection link inserted into the guide path 182 to minimize the frictional resistance between the connection link 191 and the rotating member 180.

The engaging portion 192 is respectively coupled to the other side of the connection link 191, and when the connection link 191 is horizontally moved by the rotation of the rotating member 180 and the same movement as the connection link 191 The hook 132 is coupled and separated. An end portion of the catching portion 192 is formed of a bent portion 192a that is bent downward and inwardly so as to be firmly caught by the catching frame 132. In addition, the support member 193 for guiding and supporting the locking portion 192 to be horizontally moved at the same time is provided on the upper surface of the auxiliary lid 150 to surround the connection link 191.

On the other hand, the means for controlling the driving of the motor, as shown in Figure 5, the magnet 211 provided on the upper surface of the engaging portion 192 and the fixing member 193 is fixed to the magnet 211 It is provided as a reed switch 210 is alternately driven by the magnetic field of. In addition, the reed switch 210 is connected to a controller (not shown), respectively, and inputs an on-off signal. In general, the reed switch maintains an on (or off) state and has a magnetic field of sufficient force by a magnet around the reed switch. Is added to turn off (or on). That is, when the rotating member 180 is rotated by the driving of the motor 200, and thus the connection link 191 linearly moves, the magnet 211 installed on the upper surface of the locking part 192 is locked by the locking member 190. Since the linear movement in conjunction with the magnet 211 is located directly below one of the reed switch of each of the reed switch (210). At this time, the reed switch in which the magnet is located directly below is turned on by the magnetic field of the magnet, and the other reed switch which is not affected by the magnetic field of the magnet is turned off. Therefore, the controller detects whether each of the reed switches on or off, and determines the pressure state and the pressure release state inside the inner cylinder to control the driving of the motor.

The operation and effects of the electric pressure cooker according to the present invention according to the above configuration will be described below with reference to FIG. 5.

First, the auxiliary lid 150 is coupled to the bottom of the lid 140, and the motor 200, the rotating member 180 and the locking member 190 is installed on the upper side of the auxiliary lid 150. Then, the lid 140 is closed to the main body 100, the plug is connected to the power supply unit, and the cooking operation and other functions are selected by operating the switch of the key operation unit 120.

On the other hand, assuming that the connecting link is inserted into the guide path 182 located far away from the center of the rotating member 180, as shown in Figure 5 (a) is the first state, in this case the engaging portion Since the 192 is not coupled to the hook 132, the hook 132 of the auxiliary lid 150 and the inner cylinder 130 is also not coupled. At this time, when driving the motor 200, the rotating member 180 is rotated by the driving force of the motor 200, the connection link 191 is gradually moved toward the central axis of the rotating member 180 by the rotation of the rotating member. Done. Then, the locking member 190 is also moved to the center side of the rotating member 180 so that the magnet 211 is moved directly below the second reed switch 210b in a state that was located directly below the first reed switch 210a. do.

Thus, as shown in Figure 5 (b), when the connecting link is inserted into the guide path close to the center of the rotating member 180, the magnet 211 is located directly below the second reed switch 210b, the second lead The switch 210b is turned on under the influence of the magnetic field of the magnet 211. When the second reed switch 210b is turned on, the on signal is transmitted to a controller (not shown), so that the controller stops the motor 200 at the moment when a predetermined signal is received from the second reed switch 210b. Will output a signal. When the driving of the motor 200 is stopped, the locking portion 192 and the locking frame 132 are firmly coupled, so that the auxiliary lid 150 is coupled while sealing the inner cylinder 130.

On the other hand, the control unit determines that the cooking is completed when the cooking is completed to drive the motor 200 so that the locking member 190 is moved outward from the center side of the rotating member 180. At this time, as described above, the magnet 211 is positioned directly below the second reed switch 210b, and its position is changed directly below the first reed switch 210a so that the first reed switch 210a is turned on. (FIG. 5 (a)). Therefore, the controller receives the on signal of the first reed switch 210a to turn off the driving of the motor 200.

The driving control method of the electric pressure cooker according to the present invention is as shown in the flowchart shown in FIG. That is, as shown in FIG. 6, first, it is determined whether power is input in step S10, and if power is input, in operation S12, the user inputs an operation signal of the key control unit 120 to select cooking. Will be judged. When cooking is selected in step S12, in step S14, the inner cylinder 130 and the lid 140 are coupled by driving the motor 200 to drive the coupling member 190. That is, in this case, as described above, the rotating member 180 rotates according to the driving of the motor 200, and the connection link 191 moves linearly by the rotation of the rotating member 180. Therefore, at this time, the magnet 211 is first moved to the second reed switch 210b in a state in which the first reed switch 210a is turned on, and in the controller (not shown), the first reed switch 210a and the second reed are moved. The on-off signal of the switch 210b is input to sense the current pressure state of the inner cylinder. That is, when the first reed switch 210a is turned on and the second reed switch 210b is turned off, the pressure of the inner cylinder 130 is released, the first reed switch 210a is turned off, and the second reed switch 210a is turned off. When the reed switch 210b is turned on, the inner cylinder 130 and the auxiliary lid 150 are coupled by the coupling member 190 to determine that the pressure is set in the inner cylinder 130.

Therefore, in step S16, it is determined whether the pressure inside the inner cylinder is set by the motor 200 by driving, and as a result of the determination, the first reed switch 210a is turned off and the second reed switch 210b is turned on. If it is determined that the pressure is set to proceed to step (s18) to stop the driving of the motor 200. Thereafter, in step S20, the solenoid valve 170 is driven to close the steam discharge hole 171 so that the pressure set in the inner cylinder is not discharged to the outside.

In addition, in step S22, the cooking is performed for a predetermined time by driving the electronic heating heater 114 to heat the inner cylinder 130 itself. In step s24, the electronic heating heater 114 is driven for a predetermined time to perform a cooking operation. For example, a cooking completion condition is detected. Is completed, the operation of the electronic heating heater 114 is stopped at step s26, and the operation of the solenoid valve 170 is turned off at step s28 to open the steam discharge hole 171, so that the pressure inside the cylinder is external. To be discharged. At this time, the solenoid valve 170 is intermittently driven to repeat the opening and closing of the steam discharge hole 171 to prevent the high-temperature steam inside the inner cylinder is suddenly discharged to the outside.

In step S30, when the pressure inside the inner cylinder is lowered due to the stop of the solenoid valve 170, the inner cylinder 130 and the auxiliary lid 150 are separated by driving the motor 200. At this time, the rotating member 180 is rotated due to the driving of the motor 200, and the linking link 191 moves to the outside of the inner cylinder 130 in association with the locking member 192. Will be separated. At this time, by detecting the on-off state of the first reed switch 210a and the second reed switch 210b in step S32, it is determined whether the pressure inside the inner cylinder is released. That is, the inner cylinder 130 and the auxiliary lid 150 are separated by driving the motor 200 until the first reed switch 210a is turned on and the second reed switch 210b is turned off.

If it is determined that the pressure is released as a result of the detection of the step (s32), the driving of the motor is turned off and the cooking is terminated in the step (s34).

As described above, by operating the electric pressure cooker driving control method according to the present invention by implementing a device that combines and separates the rice cooker lid and the inner container containing the rice by the user manually operated according to the start and completion of cooking It can improve the inconvenience that should be. In addition, by controlling the operation of the motor, solenoid valve and electric heating heater according to the start and completion of cooking, it automatically combines and separates the rice cooker lid and the inner cylinder to provide the advantage of accurately setting the pressure inside the cylinder and releasing the pressure. Done.

Claims (1)

In the drive control method of the electric pressure cooker to perform the cooking by applying a heat and pressure after sealing the container containing the rice with a lid, Coupling the container and the lid by driving a motor; When the coupling of the container and the lid is completed by the driving of the motor to perform cooking by heating the container while maintaining the pressure inside the container, When it is determined that cooking is finished, stopping the heating of the container and releasing the pressure inside the container to reduce the pressure, And driving the motor to release the coupling between the container and the lid when the pressure reduction in the container is completed.