KR100220906B1 - Control system for electric pressure cooker - Google Patents

Abstract

The present invention relates to a driving control method of an electric pressure cooker, in an electric rice cooker that generates pressure at high temperature and high pressure by performing steam cooking, and when cooking, the rice cooker lid and inner cylinder are tightly coupled to the inner container containing rice. By creating a high-temperature, high-pressure steam pressure, by discharging the high-temperature and high-pressure steam generated in the inner cylinder when cooking is completed, by implementing a control method to automatically release the coupling of the rice cooker lid and the inner cylinder so that the user can easily open the rice cooker lid. When cooking is started and cooking is completed, the user can improve the inconvenience of manually combining or releasing the rice cooker lid and the inner tube.

Description

Driving control method of electric pressure cooker

The present invention relates to a drive control method of an electric pressure cooker, and more particularly, in an electric rice cooker that generates pressure at high temperature and high pressure to perform pressure cooking, the rice cooker lid and inner cylinder are tightly sealed when cooking. The high temperature and high pressure steam is generated inside the inner cylinder, and upon completion of cooking, the high pressure and high pressure steam generated inside the cylinder can be stably discharged while the user can easily open the rice cooker lid to automatically uncouple the rice cooker lid and the inner cylinder. It relates to a drive control method of the electric pressure cooker.

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 depending on 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 of the rice in the inner barrel is increased, thereby improving the taste of the rice. 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 inner cylinder has to be high pressure by the steam. Pressure cooker (Korean Utility Model Publication No. 90-11191), as shown in Figure 1, the cooker body (1) is embedded in the rice cooker body 10 of the hollow body with the upper surface is opened, The cover 9 is coupled to the opening so as to be openable and closed. The bottom of the cover (9) is provided with a pot lid (7) which is sealed and combined with the cooker body (1) at the time of cooking, a plurality of coupling stones (7a) are provided on the outer periphery of the pot lid at regular intervals. 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 the incision groove 4b and the engaging portion 4c are formed in the coupling wheel 4. Unexplained portion 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 described briefly. The cover 9 covers the main body 10 so that the coupling protrusion 7a of the lid is inserted into the cut groove 4b of the pot body. Thereafter, when the handle 5 is rotated in one direction, the locking portion 4c of the coupling wheel 4 is caught by the coupling stone 7a so that the pot lid 7 and the pot body 1 are hermetically coupled, and the coupling wheel handle 5 When rotating in the other direction of the opposite pot lid (7) and the pot body (1) is to be separated.

However, the electric pressure cooker of the conventional configuration as described above, because the pot lid and the pot body is firmly coupled by the residual pressure of the steam remaining inside the cooker body after cooking, the coupling wheel handle can not be easily rotated, and also coupled Since the wheel handle protrudes out of the cooker body, there was an unsightly disadvantage.

In addition, the coupling wheel handle becomes a high temperature due to the high temperature during cooking. When the user grasps the coupling wheel handle to separate the cooker body and the cooker body immediately after cooking, it is difficult to catch with bare hands due to the high temperature and can reduce heat transfer. There was an inconvenience to separate the body of the pot by operating the coupling wheel handle using the medium.

The present invention has been made in order to solve the above-mentioned problems, the purpose is to produce a steam pressure of high temperature and high pressure in the rice cooker to perform pressure cooking automatically when cooking rice cooker lid and the inner tube tightly coupled The high temperature and high pressure steam pressure is generated inside the container, and when cooking is completed, the steam pressure of the high temperature and high pressure generated inside the cylinder is stably discharged, and the rice cooker lid and the inner cylinder are automatically released so that the user can easily open the rice cooker lid. It is to provide a drive control method of the electric pressure cooker that can be made.

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 perspective view of a part of the combination 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.

Figure 5 (a) is a side view showing the 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 for main parts of the drawings

114: electronic heating heater 130: inner cylinder

140: lid 150: auxiliary lid

170: solenoid valve 171: steam discharge hole

180: rotating member 190: locking member

200: motor 210: reed switch

211: magnet

In order to achieve the above object, the electric pressure cooker according to the present invention is rotatably coupled to one side of an upper surface of the main body, an inner cylinder formed in the main body and having a hook frame formed on an edge of an opening, and the inner cylinder sealed. In the drive control method of the electric pressure cooker having a lid, when the cooking start signal is input while the lid is closed, the lid and the inner cylinder is bent at one end so as to be hermetically coupled and locked, the linear reciprocating motion by the rotating member A motor driving step of rotating the rotating member so that the bending member is installed in a linear motion by allowing the bending member to be inserted into the hook frame of the inner cylinder, and a position of the locking member linearly moving by the motor driving step through a reed switch. When the sensing and outputting a signal according to the locking of the lid and the inner cylinder from the reed switch, the motor When the operation is stopped and the pressure cooking step is performed to turn on the solenoid valve to turn on the solenoid valve and turn on the electric heating heater so as to form a high temperature and high vapor pressure in the inner cylinder during cooking, and when the cooking completion signal is input in the pressure cooking step. Opening the solenoid valve to discharge the steam inside the inner cylinder and to drive the motor so that the bent portion of the locking member is separated from the engaging frame of the inner cylinder to rotate the rotating member while the signal according to the unlocked from the reed switch When the output is characterized in that the pressure cooking end step for stopping the drive of the motor.

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

2 is a perspective view showing a schematic structure of an electric pressure cooker according to the present invention.

As shown in FIG. 2, a hollow rice cooker body 100 having an open top surface is provided, and an inner cylinder 130 having an open upper surface containing rice in the hollow portion 111 of the cooker body 100. The built-in, rotatably coupled to the upper side of the cooker body 100 and the lid 140 for sealing the inner cylinder 130 is installed to be openable.

In addition, the front side of the cooker body 100 is provided with a key operation unit 120 for operating the electric pressure cooker, one side of the rice cooker body 100 is provided with a power supply 113 connected to the key operation unit 120. do.

In addition, the bottom of the hollow portion 111 of the cooker body 100, when electricity is supplied to the rice cooker through the power supply 113 generates a magnetic line around the electronic heater to generate heat itself by the inner cylinder 130 by the magnetic force (Not shown) is provided in a shape wound up spaced apart from the inner cylinder by a predetermined interval. Reference numeral 171 is a steam discharge hole for controlling the steam pressure to discharge the steam generated during cooking to the outside of the main body to maintain a constant pressure of the steam in the inner cylinder, 170 is the pressure for opening and closing the steam discharge hole 171 It is a solenoid valve that is a regulating device. And 150,160 is an auxiliary lid and the sealing member which will be described in detail below.

In the electric pressure cooker according to the present invention, there is provided a means including a motor 200 for automatically coupling or separating the lid 140 and the inner cylinder 130 according to the cooking or not, and the lid 140 and A motor driver 330 is provided for controlling the driving of the motor 200 by detecting that the inner cylinder 130 is completely coupled or separated.

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. Hereinafter, referring to FIGS. 3 and 4, a means for coupling or separating the lid 140 and the inner cylinder 130 and a control means for controlling the motor 200 will be described.

First, the hook 132 bent outward is formed in the opening 131 of the inner cylinder 130, which is cooked by containing rice and water, the hook 132 is caught by the locking member 190 described below The unit 192 is combined or separated. The auxiliary lid 150 as a heat sink 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. Here, 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.

In addition, the means for coupling or 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 on the upper surface of the auxiliary lid 150 It is provided, and rotates by the driving force of the motor 200. That is, the rotating member 180 is screwed to the auxiliary lid 150 on the lower surface of the motor 200 is seated in the case and the coupling groove 181 is coupled to the drive shaft of the motor 200 is formed Rotational movement is applied by the driving force of (200).

In addition, a guide path 182 is formed on the surface of the rotating member 180 in which the coupling groove 181 is formed to guide the locking member 190 in a linear reciprocating motion. The guide path 182 is formed as a closed, the distance is formed differently based on the center of the rotating member 180.

In addition, the locking member 190 is provided with a connection link 191 and the locking portion 192. The connection link 191 is provided in plurality, 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 having a different length based on the center of the rotating member 180, the connecting link 191 to make a linear reciprocating motion when the rotating member 180 is rotated do. A circular protrusion 191a is formed at the side of the link link inserted in the guide path 182, which minimizes the frictional resistance between the link link 191 and the rotating member 180, thereby smoothly performing the linear reciprocating motion of the link link 191. To make it work.

In addition, the engaging portion 192 is respectively coupled to the other side of the connection link 191, when the connection link 191 horizontal movement by the rotation of the rotating member 180, the same movement as the connection link 191 While being coupled to and separated from the hook 132. And the end of the engaging portion 192 is formed of a bent portion 192a bent downward, inward in order to be firmly caught on the engaging 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, as shown in FIG. 5, the means for controlling the driving of the motor 200 is fixed to the magnet 211 provided on the upper surface of the engaging portion 192 and the support member 193 The reed switch 210 is alternately operated by the magnetic field of the magnet 211. In addition, the reed switch 210 is connected to the control unit 340, respectively, and inputs an on-off signal, and in a normal case, 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 211, and the other reed switch which is not affected by the magnetic field of the magnet is turned off. Therefore, the controller 340 detects whether each reed switch is on or off, and determines the pressure state and the pressure release state inside the inner cylinder 130 to control the driving of the motor 200.

The operation and effects of the electric pressure cooker according to the present invention by 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, as shown in Figure 5 (a) assuming that the connection link 191 is inserted into the guide path 182 located far away from the center of the rotation member 180, the first state, this In this case, since the catching part 192 is not coupled to the catching frame 132, the catching frame 132 of the auxiliary lid 150 and the inner tube 130 are 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 by the rotation of the rotating member 180 is a central axis of the rotating member 180 Will slowly move toward. 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 FIG. 5 (b), when the connection link 191 is inserted into the guide path close to the center of the rotating member 180, the magnet 211 is positioned directly below the second reed switch 210b. Therefore, the second reed 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. (Figure 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.

First, in step S10, the controller determines whether power is input. If power is input, the controller determines whether cooking is selected by receiving an operation signal of the key manipulation unit 120 from the user in step S12. When cooking is selected in step S12, in step S14, the controller drives the motor 200 to couple the inner cylinder 130 and the lid 140 by linearly moving 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 is transferred by the rotation of the rotating member 180 to linearly move. Therefore, in this case, the magnet 211 is first moved to the second lead 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 lead are moved. The on-off signal of the switch 210b is input to sense the current locked state of the inner cylinder. That is, when the first lead switch 210a is turned on and the second lead switch 210b is turned off, the lock of the inner cylinder 130 is released, the first lead switch 210a is turned off, and the second lead switch 210a is turned off. When the reed switch 210b is on, it is determined that the inner cylinder 130 and the auxiliary lid 150 are locked by the coupling member 190.

Therefore, in step S16, it is determined whether the motor 200 is in the locked state by driving. When it is determined that the first lead switch 210a is turned off and the second lead switch 210b is turned on, the locked state is determined. Therefore, the process proceeds 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 steam pressure generated during cooking 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. For example, a determination is made whether or not the cooking completion time is elapsed. 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, thereby allowing the steam pressure inside the inner cylinder to become external. To be discharged. In this case, the solenoid valve 170 is intermittently driven to prevent the high temperature steam inside the inner cylinder from being suddenly discharged to the outside by repeating the opening and closing of the steam discharge hole 171.

Subsequently, when the pressure inside the inner cylinder is lowered due to the stop of driving of the solenoid valve 170 in step S30, the inner cylinder 130 and the auxiliary lid 150 are separated by driving the motor 200. At this time, the rotation member 180 is rotated due to the driving of the motor 200, and the linking link 191 is transferred to the outside of the inner cylinder 130 in association with the locking member 192 from the hook frame 132. Will be separated. At this time, it is determined whether the locked state is released by detecting the on-off state of the first lead switch 210a and the second reed switch 210b in step S32. That is, the motor 200 is driven until the first lead switch 210a is turned on and the second lead switch 210b is turned off to release the locked state of the inner cylinder 130 and the auxiliary lid 150. Let's go.

Accordingly, when it is determined that the locked state is released as a result of the detection of the step (s32), the driving of the motor 200 is turned off and the cooking is completed in step (s34).

As described above, according to the driving control method of the electric pressure cooker according to the present invention, in the electric rice cooker to generate a high-temperature high-pressure steam pressure to perform pressure cooking, the rice cooker by tightly sealing the rice cooker lid and the inner cylinder when cooking The high temperature and high pressure steam pressure is generated inside the container, and upon completion of cooking, the steam pressure of the high temperature and high pressure generated inside the cylinder is stably discharged, and the rice cooker lid and the inner cylinder are automatically combined so that the user can easily open the cooker lid. Implementing a control method to release the cooking has improved the inconvenience that the user must manually combine or release the rice cooker lid and inner cylinder when starting and cooking.

Claims (1)

A main body 100, an inner cylinder 130 embedded in the main body 100 and having a hook frame 132 formed on an edge surface of the opening 131, and an upper surface of the main body 100 to seal the inner cylinder 130. In the drive control method of the electric pressure cooker having a lid 140 rotatably coupled to one side, when the cooking start signal is input in the closed state of the lid 140, the lid 140 and the inner cylinder 130 The bent portion 192a has a bent portion 192a at one end so as to be hermetically coupled and is locked by linearly moving the locking member 190 installed to enable a linear reciprocating motion by the rotating member 180. A motor driving step of rotating the rotating member 180 to enter the engaging frame 132 of 130, and the position of the locking member 190 to linearly move by the motor driving step to the reed switch 210 Sensing through, the lid switch 210 to the locking of the lid 140 and the inner cylinder 130 When the correct signal is output, the solenoid valve 170 is turned on and the electromagnetic heating heater 114 is turned on to stop the driving of the motor 200 and to form a high temperature and high pressure vapor pressure in the inner cylinder 130 when cooking. In the pressure cooking step of performing pressure cooking and the cooking completion signal is input in the pressure cooking step, the electronic heating heater 114 is turned off and the solenoid valve 170 is turned off to remove steam inside the inner cylinder 130. And rotating the rotary member 180 by driving the motor 200 so that the bent portion 192a of the locking member 190 is spaced apart from the locking frame 132 of the inner cylinder 130. And a pressure cooking termination step of stopping the driving of the motor when the signal according to the unlocking is output from the switch (210).

Images