TWI624240B - Heat cooking device, computer program product and recording medium - Google Patents

Abstract

The invention provides a heating conditioner, a computer program product and a recording medium. The rice cooker according to the present invention includes: first and second stirring arms that stir the object to be heated; a motor that rotates the first and second stirring arms; and a motor control unit that faces the first and second stirring arms The rotation of the motor is controlled by rotating the direction a plurality of times. The motor control unit controls the rotation of the motor so that the first and second agitating arms rotate in the forward direction after the rotation of the first and second agitating arms in the forward direction or before the start of the rotation.

Description

Heating conditioner, computer program product and recording media

The present invention relates to a heating conditioner that heats while heating an object to be heated.

Heretofore, a heating conditioner that stirs while stirring a material such as a foodstuff is known. As such a heating conditioner, for example, Patent Document 1 discloses a rice cooker having a stirring body that is rotated by a rotating body disposed between a main body and a lid body.

In the heating conditioner having such a stirring body, if a signal indicating the stirring is given at regular intervals, the rotating body rotates the stirring body in a certain direction.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Laid-Open Patent Publication No. 2013-188292 (published on September 28, 2013)

In the heating conditioner as described above, in the case where the amount of the agitated material is increased, the load of the motor that drives the agitating arm becomes large in a state where the agitating arm touches the foodstuff, and there is a case where the stirring arm cannot rotate. . This is due to the amount of rotation corresponding to the amount of the agitated object in order to achieve the target. The power applied is different. Therefore, in such a case, in order to rotate the stirring arm, it is necessary to increase the power (torque) of the motor.

The present invention has been made in view of the above problems, and an object thereof is to suppress an increase in power of a motor that drives a stirring arm even if an object to be heated is increased.

In order to solve the above problems, a heating conditioner according to an aspect of the present invention is characterized in that the heating conditioner includes: a stirring body that agitates the object to be heated; a motor that rotates the agitating body; and a motor control unit that The motor is controlled to rotate the motor in a plurality of times in the forward direction; and the motor control unit is opposite to the positive direction after the rotation of the agitating body in the forward direction in each rotation or before the start of the rotation The rotation of the motor is controlled in such a manner that the rotation direction is rotated.

According to an aspect of the present invention, it is possible to suppress an increase in power of a motor that drives the agitating arm even if the amount of the object to be heated is increased.

1‧‧‧ rice cooker body

2‧‧‧ cover

2a‧‧‧Steam outlet

3‧‧‧Open button

4‧‧‧Power cord

5‧‧‧Display Department

6‧‧‧Operation Department

7‧‧‧ inner pot

8‧‧‧The locked part

10‧‧‧Induction coil

11‧‧‧ rotating body

12A‧‧‧1st mixing arm/stirring body

12B‧‧‧2nd mixing arm/stirring body

13‧‧‧ Cover heater

14‧‧‧Insulation heater

15‧‧‧Temperature Sensor

16‧‧‧CPU/Central Processing Unit

17‧‧‧ROM/read only memory

18‧‧‧RAM/random access memory

19‧‧‧Motor drive circuit

20‧‧‧FG sensor

21‧‧‧ Cover

22‧‧‧ Inner cover

23‧‧‧Cards

24‧‧‧Motor

25‧‧‧Motor Control Department

26‧‧‧General Rotation Control Department

27‧‧‧Unconventional Rotation Control Department

31‧‧‧Motor Control Department

32‧‧‧Rotation amount comparison unit/rotation amount determination unit

33‧‧‧Power Change Department

34‧‧‧Rotation count calculation unit/rotation count unit

35‧‧‧Spinning comparison department

41‧‧‧Heating Control Department

42‧‧‧Rising temperature measuring department

43‧‧‧ Temperature rise determination unit

50‧‧‧Stirring unit

100‧‧‧Electric rice cooker/heating conditioner

FGm‧‧‧ measured FG value

FGt‧‧‧ target FG value

Nc‧‧‧ Calculate the number of rotations/count value

Nt‧‧‧ specifies the number of rotations

T1‧‧‧ time

T2‧‧‧ time

Fig. 1 is a perspective view showing a state in which a lid of a rice cooker according to Embodiment 1 of the present invention is closed.

Fig. 2 is a perspective view showing a state in which the lid of the rice cooker is opened.

Fig. 3 is a perspective view showing a state in which the first stirring arm and the second stirring arm of the rice cooker are stirred.

Fig. 4 is a longitudinal sectional view showing the internal structure of the rice cooker.

Fig. 5 is a block diagram showing the configuration of the above-described rice cooker control system.

Fig. 6 is a block diagram showing the configuration of the motor control system of the above rice cooker.

Fig. 7 is a waveform diagram showing the concept of the rotation control of the motor by the motor control unit of the motor control system.

Fig. 8 is a view showing a change in the power of the motor with respect to the number of stirring times in comparison with the previous stirring method by the above-described rice cooker stirring method.

Fig. 9 is a block diagram showing the configuration of a motor control system of the second embodiment of the rice cooker.

Figure 10 is a flow chart showing the procedure for power control of the motor of the motor control system of Figure 9.

Fig. 11 is a view showing a change in the power of the motor with respect to the number of agitations in comparison with the previous stirring method by the stirring method of the rice cooker having the motor control system of Fig. 9.

Fig. 12 is a waveform diagram showing a specific example of the rotation control of the motor by the motor control unit of the motor control system of Fig. 9.

Figure 13 is a flow chart showing the procedure for controlling the actual number of rotations of the motor by the motor control system of Figure 9.

Fig. 14 is a block diagram showing the configuration of a heating control system of the third embodiment of the rice cooker.

[Embodiment 1]

An embodiment of the present invention will be described based on FIGS. 1 to 8 as follows.

Fig. 1 is a perspective view showing a state in which the lid body 2 of the rice cooker 100 (heating conditioner) of the first embodiment is closed. Fig. 2 is a perspective view showing a state in which the lid of the rice cooker 100 is opened. Fig. 3 is a perspective view showing a state in which the first stirring arm 12A and the second stirring arm 12B of the rice cooker 100 are stirred. 4 is a longitudinal sectional view showing the internal structure of the rice cooker 100. The structure of the rice cooker 100 will be described with reference to the drawings.

As shown in Fig. 1, the rice cooker 100 includes a rice cooker main body 1 and a lid body 2 attached to an upper portion of the rice cooker main body 1. The rice cooker 100 is configured to be used not only for cooking but also for cooking or steaming food.

An opening button 3 for opening the lid 2 is provided on the surface of the rice cooker body 1 . On the other hand, the plug provided at the end of the power supply line 4 protrudes from the rear surface of the rice cooker body 1. Most of the power cord 4 is wound around a wire spool (not shown) in the rice cooker main body 1.

A display unit 5 for displaying a liquid crystal such as a tanning method and a conditioning name, and an operation unit 6 including a plurality of operation switches are provided in front of the upper surface of the lid body 2. Further, the steam of the inner pot 7 shown in Fig. 2 is discharged from the steam discharge port 2a at the rear portion of the upper surface of the lid body 2.

As shown in Fig. 2, an inner pot 7 is housed in the rice cooker main body 1, and the inner pot 7 is opened and closed by the lid body 2.

A locked portion 8 is provided at a front portion of the upper surface of the rice cooker body 1. The locking portion 23 provided at the front portion of the lower surface of the lid body 2 is detachably locked to the engaged portion 8. When the open button 3 is pressed, the locked portion 8 moves rearward, and the locking of the locking portion 23 with respect to the locked portion 8 is released.

An induction coil 10 for inductively heating the inner pot 7 is provided in the rice cooker body 1. Further, the induction coil 10 is an example of a heating portion.

Rice, water, and the like as an example of the contents are housed in the inner pot 7. The inner pot 7 is formed of a highly heat conductive material such as aluminum. A magnetic body such as stainless steel which improves the heating efficiency is attached to the outer surface of the inner pot 7. On the other hand, the inner surface of the inner pot 7 is coated with a fluororesin for preventing adhesion of the contents.

The lid body 2 has a lid 21 that is located on the side opposite to the inner pot 7 side when the lid body 2 is closed, and an inner lid 22 that is located on the inner pot 7 side when the lid body 2 is closed. A motor 24 is disposed in a right corner portion of the rear portion of the outer cover 21. A connecting shaft (not shown) is rotatably disposed on the inner lid 22 . The connecting shaft is rotated by a rotational driving force generated by the motor 24 via a pulley or a belt (not shown).

At the cover 2, a stirring unit 50 is rotatably mounted. The stirring unit 50 is rotated by the driving force of the motor 24 to agitate the contents contained in the inner pot 7.

As shown in FIGS. 2 and 3, the stirring unit 50 includes a rotating body 11, a first stirring arm 12A as a stirring body, and a second stirring arm 12B.

The rotating body 11 is rotatably attached to the lid body 2. The first agitating arm 12A and the second agitating arm 12B are disposed so as to be swingably attached to the rotating body 11 and sandwich the rotating body 11 .

The first agitating arm 12A and the second agitating arm 12B are in a non-stirring state (see FIG. 2 ) that can be arranged to be disposed along the side surface of the rotating body 11 and a stirring state in which the non-stirring state extends in the vertical direction (refer to FIG. 3 ). The method is rotatably attached to the rotating body 11. Since the first agitating arm 12A and the second agitating arm 12B are extended toward the inner pot 7 as shown in FIG. 3 in the agitating state, they are in contact with rice or the like in the inner pot 7.

As shown in FIG. 4, a cover heater 13 for heating the inner lid 22 is provided on the upper surface side of the inner lid 22. Further, a heat insulating heater 14 for holding the object to be heated in the inner pot 7 is provided on the outer surface of the inner pot 7. Furthermore, the induction coil 10 described above is disposed directly below the bottom of the inner pot 7. A temperature sensor 15 for detecting the temperature of the inner pot 7 is provided in the space on the inner circumference side of the induction coil 10. The temperature sensor 15 is a sensor for detecting the temperature of the inner pot 7, and is constituted by, for example, a thermal resistor or the like. The temperature sensor 15 is disposed in contact with the bottom of the inner pot 7.

Next, the control system of the rice cooker 100 will be described. Fig. 5 is a block diagram showing the construction of a control system for the rice cooker 100. Figure 6 shows the composition of the motor control system of the rice cooker 100 Block diagram.

As shown in FIG. 5, the main part of the control system of the rice cooker 100 includes a CPU (Central Processing Unit) 16, a ROM (Read Only Memory) 17, and a RAM (Random Access Memory). Take memory)18. Further, the rice cooker 100 includes a motor drive circuit 19 that drives the motor 24, and an FG sensor 20 that detects the rotation of the motor 24.

The CPU 16 controls the respective sections by executing a control program stored in the ROM 17. Specifically, the CPU 16 performs display control of the display unit 5, accepts an operation of the operation unit 6, and performs on/off control and temperature control of the induction coil 10, the lid heater 13, and the heat retention heater, and the motor drive circuit 19 Drive control, etc.

An FG sensor 20 is mounted on the motor 24. On the outer circumference of the rotor having the motor 24 composed of, for example, a DC motor, 360 FG (Frequency Generator) teeth magnetized in such a manner that the N pole and the S pole are alternately arranged are provided. The FG sensor 20 is a magnetic sensor such as a Hall element that detects a magnetic field generated by the rotation of the rotor, an MR sensor, or the like, and outputs a pulse-shaped FG signal.

The CPU 16 measures the period (FG value) of the FG signal, and outputs a PWM signal to become the target FG value. Further, the CPU 16 outputs an ON/OFF signal for turning on/off the motor 24 and a rotation direction signal of the rotation direction of the specific motor 24.

The motor drive circuit 19 rectifies the PWM signal to generate a DC voltage applied to the motor 24. Further, the motor drive circuit 19 drives and stops the drive motor 24 based on the on/off signal. Further, the motor drive circuit 19 rotates the motor 24 in the forward direction or in the reverse direction based on the rotation direction signal.

As shown in FIG. 6, the rice cooker 100 is equipped with the motor control part 25. Motor control unit 25 is implemented The portion of the motor 16 that is controlled by the CPU 16 performs the above-described PWM signal, on/off signal, and output of the rotation direction signal. Further, the motor control unit 25 includes a general rotation control unit 26 and an abnormal rotation control unit 27. The general rotation control unit 26 operates in the normal agitation mode, and the non-conventional rotation control unit 27 operates in the non-normal agitation mode.

The general stirring mode is applied to a case where the load of the first stirring arm 12A and the second stirring arm 12B is small, for example, the case where the weight of the object to be heated is smaller than a specific value, or the case where a light load of a cooking surface or the like is selected. . The unconventional stirring mode is applied when the load of the first stirring arm 12A and the second stirring arm 12B is large, for example, the weight of the object to be heated is a specific value or more, or the amount of the object to be heated is increased under the conditioning menu of the cooking or the like. The situation. Moreover, the magnitude of the load can also be determined by the value of the current flowing in the motor 24. The weight of the object to be heated can be measured by, for example, providing a weight sensor (not shown) on the bottom of the inner pot 7.

The general rotation control unit 26 and the non-conventional rotation control unit 27 appropriately determine whether or not the general stirring mode is applicable or unconventional, in accordance with the instruction content (the specification of the conditioning menu, the increment instruction of the object to be heated, etc.) input to the operation unit 6. Whether the stirring mode is applicable or not. In either the normal agitation mode or the non-conventional agitation mode, the rotation of the first agitating arm 12A and the second agitating arm 12B is determined in advance according to the conditioning menu for a specific number of times, in each rotation. It is carried out with a specific amount of rotation.

The general rotation control unit 26 rotates the motor 24 in the forward direction so that the first agitating arm 12A and the second agitating arm 12B are rotated in the stirring direction (positive direction) a plurality of times.

Similarly to the general rotation control unit 26, the non-conventional rotation control unit 27 rotates the motor 24 in the forward direction so that the first agitating arm 12A and the second agitating arm 12B rotate in the stirring direction a plurality of times (positive rotation control step). . Further, the unconventional rotation control unit 27 rotates in the forward direction in each rotation of the first agitating arm 12A and the second agitating arm 12B in addition to the above-described basic rotation control. After the end of the rotation or before the start of the rotation, the motor 24 is rotated slightly in the opposite direction to the positive direction, and the motor 24 is rotated in the reverse direction after the end of the rotation in the forward direction (the reverse control step).

The operation of the general stirring mode and the non-normal stirring mode of the rice cooker 100 configured as described above will be described. Fig. 7 is a waveform diagram showing the concept of the rotation control of the motor 24 by the motor control unit 25 of the motor control system. Fig. 8 is a graph showing changes in the power of the motor 24 with respect to the number of stirring times in comparison with the previous stirring method by the stirring method of the rice cooker 100.

In the normal stirring mode, the normal rotation control unit 26 operates to output a PWM signal, an on/off signal, and a forward rotation direction signal from the normal rotation control unit 26. The motor drive circuit 19 rotates the motor 24 in response to the time, the number of rotations, and the amount of rotation that are designated based on the signals.

In the normal stirring mode, the load applied to the first stirring arm 12A and the second stirring arm 12B is small. Therefore, even if the first agitating arm 12A and the second agitating arm 12B are rotated in the forward direction only when the first agitating arm 12A and the second agitating arm 12B are in contact with the object to be heated, the load of the motor 24 is small, so that the first agitating arm 12A and the first can be made according to the target. 2 The stirring arm 12B rotates.

In the non-conventional stirring mode, the non-conventional rotation control unit 27 outputs a PWM signal, an on/off signal, and a reverse/forward rotation direction signal by the unconventional rotation control unit 27. The motor drive circuit 19 rotates the motor 24 in response to the time, the number of rotations, and the amount of rotation that are designated based on the signals. As shown in Fig. 7, the motor 24 is reversed after being rotated in the forward direction (forward rotation) in each rotation. Alternatively, the motor 24 is reversed before the forward rotation in each rotation as shown by the broken line in FIG.

As a result, the first agitating arm 12A and the second agitating arm 12B are rotated in the reverse direction after being rotated in each of the positive directions or before being in contact with the object to be heated. Thus, starting at the positive rotation At this time, since the first agitating arm 12A and the second agitating arm 12B do not touch the object to be heated, the load of the motor 24 becomes small. Then, the first agitating arm 12A and the second agitating arm 12B are slightly in contact with the object to be heated after being rotated in the forward direction. Therefore, even when the amount of the object to be heated is increased and the load of the motor 24 is increased, the first agitating arm 12A and the second agitating arm 12B can be rotated in accordance with the target without increasing the power of the motor 24.

Here, in the case where the object to be heated is stirred 10 times by the first stirring arm 12A and the second stirring arm 12B, the stirring method of the present embodiment is compared with the previous stirring method (rotation in the positive direction only) with respect to the number of stirring times. The change in power is explained. Next, the material of the potato stew (the meat and the potato cooking) of a relatively large number of 6 persons is used as the object to be heated, and the stirring amount (target rotation amount) which is the target of the first time is fixed to be constant. An example.

According to the stirring method of the present embodiment, as shown by the solid line in FIG. 8, the target amount of rotation is reached in the stirring after four times, and the power of the motor 24 is substantially constant. In the stirring up to 4 times, it is necessary to gradually increase the power of the motor 24 to achieve the target amount of agitation. Further, in the stirring after 5 times, the effect of reversing the motor 24 after the forward rotation (or before) occurs, and the increase in the power of the motor 24 can be suppressed.

On the other hand, according to the previous stirring method, as shown by a broken line in FIG. 8, the stirring of the up to four times increases the power of the motor 24 in the same manner as the stirring method of the present embodiment. However, the power of the motor 24 is also increased during the stirring up to the next nine times, and the target rotation amount is finally reached in the ninth stirring, and the power of the motor 24 is constant. The power of the motor 24 is increased until the agitation of the motor 24, and the motor 24 is rotated in the stirring direction in order to bring the first agitating arm 12A and the second agitating arm 12B into contact with the object to be heated during each agitation. The load is large.

According to the stirring method of the present embodiment, as shown in FIG. 8, the target rotation can be achieved. The power of the rotating motor 24 reduces the large power difference ΔP compared to the previous stirring method.

Further, the amount of rotation (rotation angle) when the motor 24 is reversed may be a specific ratio with respect to the amount of rotation during forward rotation, or may be a fixed amount of rotation.

Further, in the present embodiment, the two first stirring arms 12A and the second stirring arms 12B are used as the stirring system, but one or three or more stirring arms may be used.

Further, in the present embodiment, the general agitation mode and the non-conventional agitation mode are used separately, but the non-conventional agitation mode may be fixedly used as a general agitation mode.

Further, in the present embodiment, the rice cooker 100 has been described. However, the rotation control of the first stirring arm 12A and the second stirring arm 12B as described above may be applied to a heating conditioner that does not have a rice cooking function. The second embodiment and the third embodiment to be described later can also be applied to a heating conditioner that does not have such a rice cooking function.

[Embodiment 2]

Another embodiment of the present invention will be described with reference to Figs. 9 to 13 as follows. In the following description, the components that have the same functions as those of the components described in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

Fig. 9 is a block diagram showing the configuration of a motor control system of the second embodiment of the rice cooker 100.

The rice cooker 100 of the present embodiment includes the motor control unit 31 shown in Fig. 9 instead of the above-described motor control unit 25. The motor control unit 31 realizes the function of the motor control function of the CPU 16 (see FIG. 5), and outputs the PWM signal, the on/off signal, and the rotation direction signal described above. Further, the motor control unit 31 includes a rotation amount comparison unit 32 (rotation amount determination unit) and a power change unit 33.

The rotation amount comparing unit 32 compares the target FG value FGt determined based on the conditioning menu or the like with the measured FG value FGm actually measured by the motor control unit 31 based on the FG signal from the FG sensor 20. The amount of rotation of the target of the motor 24 is compared with the actual amount of rotation. Further, when the difference between the target FG value FGt and the actual measured FG value FGm is equal to or greater than a specific value, the rotation amount comparing unit 32 outputs a power change instruction signal indicating the change of the power. Further, the rotation amount comparing unit 32 outputs a general power instruction signal that sets the power to the normal power when the difference between the target FG value FGt and the measured FG value FGm does not reach a specific value.

When the power change unit 33 receives the power change instruction signal from the rotation amount comparison unit 32, the power of the motor 24 is changed to the specific difference between the target FG value FGt and the measured FG value FGm from the next rotation. Value (specific PWM value). When the general power instruction signal from the rotation amount comparing unit 32 is received, the power of the motor 24 is set to the normal power during the next rotation. Further, when the power change unit 33 receives the power change instruction signal, the power change unit 33 changes the rotation time of the motor 24 to a specific value corresponding to the power change instruction signal, and if the general power instruction signal is received, The time when the rotation time of the motor 24 is set to the normal power from the next rotation. Further, when the power change unit 33 receives the power change instruction signal, it is possible to change the current value flowing in the motor 24 to the power change instruction signal in the same rotation time of the motor 24 from the next rotation. The specific value (PAM control).

The operation of changing the power of the motor 24 by the motor control unit 31 configured as described above will be described with reference to Fig. 10 . Figure 10 is a flow chart showing the procedure for power control of the motor 24 by the motor control system.

As shown in FIG. 10, first, the rotation amount comparing unit 32 compares the target FG value FGt with the actual measured FG value FGm (step S1). The rotation amount comparing unit 32 determines whether the difference between the first specific value D1 and the first specific value D1 is less than the first specific value D2 or the second specific value D2 or the second specific value D2 by using the comparison (step S2). Here, the second specific value D2 is a value larger than the first specific value D1.

When the rotation amount comparing unit 32 determines that the difference between the two is equal to or greater than the first specific value D1 and does not reach the second specific value D2, the power changing unit 33 causes the power of the next rotation to be slightly changed from the current value (No. The change amount is changed to output the PWM signal to the motor drive circuit 19. The motor 24 is driven by the motor drive circuit 19 based on the PWM signal, and is rotated at a power changed by a small amount of change in the next rotation (step S3). For example, when the measured FG value FGm is equal to or larger than the first specific value D1 and less than the second specific value D2 with respect to the target FG value FGt, the motor 24 increases the power. Conversely, in the case where the measured FG value FGm is a large value with respect to the target FG value FGt, the motor 24 reduces the power.

In step S2, when the rotation amount comparing unit 32 determines that the difference between the two is equal to or greater than the second specific value D2, the power changing unit 33 causes the power of the next rotation to have a large amount of change from the current value (the second amount of change). The manner of the change outputs the PWM signal to the motor drive circuit 19. Here, the second amount of change is a value larger than the first amount of change. The motor 24 is driven by the motor drive circuit 19 based on the PWM signal in step 3, and is rotated at the power changed by a large amount of change in the next rotation (step S4).

When the rotation amount comparing unit 32 determines in step S2 that the difference between the two does not reach the first specific value D1, the power changing unit 33 outputs the PWM signal to the motor so that the power of the motor 24 becomes the normal power during the next rotation. Drive circuit 19. The motor 24 is driven by the motor drive circuit 19 based on the PWM signal, and is rotated at a normal power during the next rotation (step S5).

After step S3, step S4, or step S5, the rotation amount comparing unit 32 determines whether or not the rotation of the predetermined number of times has ended (step S6). When the rotation amount comparing unit 32 determines that the rotation of the predetermined number of times has ended (Yes), the processing is terminated. On the other hand, if it is determined that the rotation of the predetermined number of times has not ended (NO), the processing of the step S1 is performed again.

When the difference between the measured rotation amount and the target rotation amount of the first agitating arm 12A and the second agitating arm 12B (motor 24) is equal to or greater than a specific value (first specific value), the motor control unit 31 corresponds to a specific value (first specific value). In the next rotation, the measured rotation amount is approached to the target rotation amount in the next rotation. The amount of change in power and time in the direction of change. Specifically, the motor control unit 31 controls the motor 24 such that the amount of change is increased when the measured amount of rotation is away from the target amount of rotation, and the amount of change is made when the measured amount of rotation approaches the target amount of rotation. The amount of change is reduced (return to normal).

In this way, even if the weight of the object to be heated is increased, the first rotation arm 12A and the second agitating arm 12B start to rotate faster, and after the target rotation amount is simultaneously reached, the target rotation amount can be maintained without largely deviating. Therefore, even if the weight range of the object to be heated is expanded, the first stirring arm 12A and the second stirring arm 12B can be operated by using the power and time suitable for each amount, and as shown in FIG. 11, in a short time. The target amount of rotation is reached and maintained.

Fig. 11 is a graph showing the change in power of the motor 24 with respect to the number of stirring times in comparison with the previous stirring method by the stirring method of the rice cooker 100. Fig. 11 shows an example in which a relatively six-part potato stew material is used as the object to be heated. Further, the previous stirring method is an example in which the power is changed to a constant value regardless of the difference between the measured rotation amount and the target rotation amount.

As shown in FIG. 11, according to the stirring method of the present embodiment, as shown by the solid line, the target power is reached at time T1. On the other hand, according to the previous stirring method, as indicated by a broken line, the target power is finally reached when the time T2 is significantly longer than the time T1. As described above, according to the stirring method of the present embodiment, the time until the target amount of rotation is reached can be significantly shortened compared to the previous scrambling method.

Here, a specific example of the control of the motor 24 corresponding to the difference between the target rotation amount and the actual measured rotation amount by the motor control unit 31 will be described. Fig. 12 is a waveform diagram showing a specific example of the rotation control of the motor 24 by the motor control unit 31 of the motor control system. Fig. 12 shows an example in which the power of the motor 24 is changed in accordance with the difference between the measured rotation amounts with respect to the target rotation amount without changing the rotation time of the motor 24. It is not limited to this example, and the motor may not be used. Under the power variation of 24, the rotation time is changed in accordance with the difference between the measured rotation amounts with respect to the target rotation amount.

As shown in FIG. 12, when the measured rotation amount is smaller than the target rotation amount, the motor control unit 31 increases the power of the motor 24 in accordance with the difference between the target rotation amount and the measured rotation amount in the next rotation. . On the other hand, when the actual measured rotation amount is larger than the target rotation amount, the motor control unit 31 decreases the power of the motor 24 in accordance with the difference between the target rotation amount and the actual measured rotation amount in the next rotation. The motor control unit 31 controls the power of the motor 24 such that the measured amount of rotation approaches the target amount of rotation as described above. Further, when the measured rotation amount is equal to the target rotation amount, the motor control unit 31 maintains the power of the motor 24 during the next rotation.

For example, as the heating conditioning proceeds, the object to be heated becomes soft, or if the object to be heated, such as a sauce, is dried, the viscosity becomes high and becomes hard. In the case where the object to be heated becomes soft, since the load of the motor 24 becomes light and it is easy to rotate, the measured amount of rotation becomes larger than the target amount of rotation. In this case, the power of the motor 24 is controlled in a reduced manner during the next rotation. On the other hand, in the case where the object to be heated is hardened, since the load of the motor 24 becomes heavy and it is not easy to rotate, the measured amount of rotation is smaller than the target amount of rotation. In this case, the power of the motor 24 is controlled in an increased manner during the next rotation.

In addition, the processing shown in FIG. 10 is actually not related to whether or not the motor 24 is rotated. When the rotation amount comparing unit 32 determines that the motor 24 has been rotated a predetermined number of times in step S6, the rotation amount comparing unit 32 ends. However, even if the first agitating arm 12A and the second agitating arm 12B attempt to rotate at the same number of times within a certain period of time, the number of times of actually rotating by the target amount of rotation differs depending on the load (weight of the object to be heated). Therefore, in the case of a small load, the stirring will be excessive, and conversely, the stirring will be insufficient in the case of a large load.

Moreover, even in the case where the object to be heated is heavy (heavy), even if the target amount of rotation is reached as soon as possible In this way, the power of the next rotation is increased, and the target rotation amount is finally reached under a plurality of rotations, so that the difference in the actual number of rotations (stirring) is generated as compared with the case where the object to be heated is less (light). For example, when the first agitating arm 12A and the second agitating arm 12B are rotated 30 times in the heating time of 5 minutes, the motor control unit 31 can use the above-described processing as soon as possible when the number of objects to be heated is large. Ground rotation control. However, when the first agitating arm 12A and the second agitating arm 12B cannot rotate in accordance with the target amount of rotation during the first several rotations, the first agitating arm 12A and the second agitating arm 12B cannot be rotated correctly 30 times.

In order to eliminate the disadvantageous aspect as described above, the motor control unit 31 further includes a rotation number calculation unit 34 (rotation count unit) and a rotation number comparison unit 35.

When the determination target FG value FGt coincides with the actual measured FG value FGm, the rotation number calculation unit 34 determines that the motor 24 has been rotated once in the forward direction, and adds 1 to the calculation rotation number Nc (count value), and the counting motor 24 is positive. The number of rotations in the direction of rotation.

The number-of-rotations comparison unit 35 compares the predetermined number of rotations Nt and the number of calculations of rotation Nc which are predetermined in advance in accordance with the conditioning menu or the like. When the two match, the rotation number comparison unit 35 outputs an off signal to the power changing unit 33 to stop the motor 24 . When the two do not match each other, the rotation number comparison unit 35 outputs an ON signal to the power changing unit 33 to cause the motor 24 to rotate next.

The operation of controlling the actual number of rotations of the motor 24 by the motor control unit 31 configured as described above will be described with reference to FIG. FIG. 13 is a flowchart showing a procedure for controlling the actual number of rotations of the motor 24 controlled by the motor control unit 31.

As shown in FIG. 13, first, the number-of-rotations calculation unit 34 sets the number of calculation rotations Nc to 0 (step S11). Next, the rotation amount comparing unit 32 compares the target FG value FGt with the actual measured FG value FGm (step S12), and determines whether or not the two match (step S13). The rotation amount comparison unit 32 determines When the two are coincident (Yes), the number-of-rotations calculation unit 34 adds 1 to the number of calculation rotations Nc (step S14).

Then, the number-of-rotations comparison unit 35 compares the predetermined number of rotations Nt with the number of calculations of the number of rotations Nc (step S15), and determines whether or not the two match (step S16). When the number-of-rotations comparison unit 35 determines that the two match (Yes), it is determined that the motor 24 has rotated the target rotation amount in each rotation and has completed the rotation of the predetermined number of rotations Nt. Thereby, the power changing unit 33 stops the rotation of the motor 24 (step S17), and the stirring operation is completed. Thereafter, transfer to the next conditioning stage as needed.

When the rotation amount comparing unit 32 determines in step S13 that the target FG value FGt does not match the measured FG value FGm, the process proceeds to step S15.

When the number-of-rotations comparing unit 35 determines that the two do not match in step S16, the process proceeds to step S12, and in the next rotation, the rotation amount comparing unit 32 compares the target FG value FGt with the measured FG value FGm.

In this manner, the motor control unit 31 determines whether or not the actual measured rotation amount of each rotation of the motor 24 has reached the target rotation amount. Further, the motor control unit 31 controls the motor 24 such that the rotation in which the measured rotation amount reaches the target rotation amount is regarded as normal rotation, and the rotation operation is continued until the number of rotations of the normal rotation reaches the predetermined number of rotations Nt. . Thereby, it is possible to unify the number of times of normal rotation in accordance with the target, not the number of attempts to rotate, and the predetermined number of rotations Nt. Therefore, even if the amount of the object to be heated differs, the amount of the agitation can be made uniform to the same extent without causing a difference in the degree of agitation.

Further, the rotation amount comparing unit 32 determines whether the target FG value FGt matches or does not coincide with the measured FG value FGm in the above-described step S13, but may determine whether the measured FG value FGm reaches a specific ratio (for example, 70%) of the target FG value FGt. . Such a determination can be applied to a case where the target FG value FGt does not coincide with the measured FG value FGm, but if the measured FG value FGm approaches the target FG value FGt to some extent, the 1st agitation is completed according to the target. .

In addition, the rotation amount comparison unit 32, the power change unit 33, the rotation number calculation unit 34, and the rotation number comparison unit 35 of the motor control unit 31 can be used as the function of the non-conventional rotation control unit 27 of the motor control unit 25 of the first embodiment. Group loading.

[Embodiment 3]

Another embodiment of the present invention will be described based on Fig. 14 as follows. In addition, for the convenience of description, constituent elements having the same functions as those of the first embodiment and the second embodiment will be denoted by the same reference numerals, and their description will be omitted.

Fig. 14 is a block diagram showing the configuration of a heating control system of the third embodiment of the rice cooker 100.

As shown in FIG. 14, the rice cooker 100 of this embodiment is equipped with the heating control part 41. The heating control unit 41 realizes the function of the heating control function of the CPU 16 (refer to FIG. 5), and controls the conduction of the heat insulating heater 14 and the induction coil 10 based on the temperature of the inner pot 7 detected by the temperature sensor 15. / Shutdown and temperature. Therefore, the heating control unit 41 includes the rising temperature measuring unit 42 and the temperature increase determining unit 43.

The rising temperature measuring unit 42 measures the rising temperature ΔT of the inner pot 7 during a specific time period from the start of heating based on the detected temperature of the temperature sensor 15.

When the rising temperature ΔT is equal to or higher than the specific temperature, the temperature increase determining unit 43 determines that the amount of the object to be heated is small, and controls the heat insulating heater 14 to be turned off during the heat retention.

Thereby, it is possible to prevent the burned material from being dried or excessively heated, and to prevent the burnt material on the side surface of the inner pot 7 from adhering or adhering. Moreover, since it does not consume unnecessary power, it contributes to power saving. When the temperature rise determination unit 43 determines that the amount of the object to be heated is small during the heat retention, the heat retention heater 14 disposed on the side surface of the inner pot 7 is turned off, and the induction coil 10 disposed on the bottom surface of the inner pot 7 is turned on. Keep warm.

Further, in the present embodiment, the configuration in which the heat insulating heater 14 is provided on the side surface of the inner pot 7 and the induction coil 10 is provided on the bottom surface of the inner pot 7 has been described. On the other hand, the heating means may be configured such that a heater is provided on both the side surface and the bottom surface of the inner pot 7, or an induction coil is provided on both the side surface and the bottom surface of the inner pot 7.

[Example of implementation using software]

The control block of the rice cooker 100 (in particular, the motor control unit 31 and the heating control unit 41) can be realized by a logic circuit (hardware) formed of an integrated circuit (IC chip) or the like, or can be realized by the CPU 16 using software.

In the latter case, the rice cooker 100 has a CPU 16 that executes a command to implement a software program of each function, and a ROM 17 or a memory device that records the program and various materials in a manner that can be read by a computer (or CPU) (will These are referred to as "recording media", and the RAM 18 in which the above program is developed. If so, the computer (or the CPU 16) reads (loads) the above program from the recording medium and executes it, thereby achieving the purpose of the invention. As the recording medium, "non-transitory tangible media" such as a magnetic tape, a magnetic disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. Further, the program may be supplied to the computer via any transmission medium (communication network, broadcast wave, etc.) that can transmit the program. Furthermore, the present invention can also be implemented in such a manner that the program is embodied by a data signal carried on a carrier by electronic transmission. Moreover, the present invention can also be implemented in the form of a computer program product incorporating the above program.

〔to sum up〕

A heating conditioner according to a first aspect of the present invention includes: a stirring body (a first stirring arm 12A and a second stirring arm 12B) that agitates the object to be heated; a motor 24 that rotates the agitating body; and a motor control unit 25; 31. The rotation of the motor 24 is controlled such that the agitating body rotates in the forward direction a plurality of times; and the motor control units 25 and 31 are oriented in the respective rotations of the agitating body. The rotation of the motor is controlled such that the rotation of the direction is completed or before the start of the rotation in the direction of rotation opposite to the positive direction.

According to the above configuration, the agitating body rotates in the forward direction slightly after the last rotation of the agitating body in a state of self-contact with the object to be heated. Thereby, at the start of the rotation in the positive direction during each rotation, since the agitating body is away from the object to be heated, the load of the motor becomes small. If the agitating body is slightly rotated in the positive direction and then touches the object to be heated, the power of the motor can be more suppressed than when the agitating body is rotated in the forward direction from the first rotation.

The heating conditioner according to the aspect 2 of the present invention is the heating device according to the aspect 1, wherein the motor control unit 31 can correspond to a difference between a target rotation amount of the motor 24 and a measured rotation amount of a specific value or more. The amount of change in the difference is used to change the power of the motor that is rotated next time.

According to the above configuration, when the difference between the measured rotational amount of the motor and the target rotational amount is large, the amount of change in the power of the motor can be increased in the next rotation so as to quickly approach the target rotational amount. Thereby, even in the case where the amount of the object to be heated is large, the target power can be achieved in a shorter time.

A heating conditioner according to a third aspect of the present invention, wherein the motor control unit 31 further includes: a rotation amount determining unit that determines a measured rotation of the motor at one rotation Whether the amount reaches the target rotation amount; and the number-of-rotations counting unit counts the number of rotations in which the motor has been rotated in the forward direction when the measured rotation amount reaches the target rotation amount; and until the count value of the rotation number counting unit reaches the prescribed value The rotation operation of the motor is maintained until the number of rotations Nt.

According to the configuration described above, the number of times the target rotation amount is normally rotated, not the number of attempts to rotate, can be unified with the predetermined number of rotations Nt. Therefore, even if the amount of the heated object is different The total amount of the agitation can be made uniform to the same extent without causing a difference in the degree of agitation.

The heating conditioner of each aspect of the present invention can be realized by a computer. In this case, the heating conditioning of the heating conditioner is realized by a computer by operating the computer as a part (software element) of the heating conditioner. The control program of the device and the computer readable recording medium on which it is recorded are also within the scope of the present invention.

[attachment]

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and embodiments in which the respective technical means disclosed in the different embodiments can be combined as appropriate are also included in the present invention. Within the technical scope. Furthermore, new technical features can be formed by combining the technical means separately disclosed in the respective embodiments.

Claims (5)

A heating conditioner comprising: a stirring body that agitates an object to be heated; a motor that rotates the agitating body; and a motor control unit that rotates the agitating body in a positive direction a plurality of times The motor control unit controls the rotation of the motor, and the motor control unit rotates in the positive direction after the rotation of the agitating body in the forward direction in each rotation or before the start of the rotation, and the positive direction The rotation of the aforementioned motor is controlled in such a manner as to rotate in the opposite direction of rotation. The heating device according to claim 1, wherein the motor control unit changes the motor of the next rotation in accordance with a change amount of the difference when a difference between a target rotation amount of the motor and a measured rotation amount is a specific value or more power. The heating controller according to claim 1 or 2, wherein the motor control unit further includes: a rotation amount determining unit that determines whether a measured rotation amount of the first rotation of the motor reaches a target rotation amount; and a rotation number counting unit that is When the measured rotation amount reaches the target rotation amount, the number of rotations in which the motor has been rotated in the forward direction is counted; and the rotation operation of the motor is maintained until the count value of the rotation number counting unit reaches a predetermined number of rotations. A computer program product that loads a program via a computer; and has a program for causing the computer to perform the following control steps: a forward rotation control step that controls the stirring body that agitates the object to be heated to rotate in the forward direction a plurality of times a rotation of the motor in which the agitating body rotates; and a reverse control step of causing the agitating body to rotate in a direction shorter than a positive direction after the end of the rotation in the forward direction or before the start of the rotation of the agitating body The rotation of the aforementioned motor is controlled in such a manner that the positive direction is rotated in the opposite direction of rotation. A computer readable recording medium loaded with a program via a computer; and a program for causing a computer to perform the following control steps: a positive rotation control step for rotating the stirring body of the heated object in a positive direction a plurality of times Controlling the rotation of the motor that rotates the agitating body; and a reversing control step of rotating the agitating body shorter than the positive direction after the rotation in the positive direction is terminated in each rotation or before the rotation is started. At the time, the rotation of the motor is controlled in such a manner as to rotate in the opposite direction of rotation with respect to the positive direction.