JP7105146B2 - Induction heating cooking device and its control method - Google Patents

Description

TECHNICAL FIELD The present invention relates to an induction heating cooker that is placed on a dining table and used.

2. Description of the Related Art Conventionally, as this type of heat cooking apparatus, there has been known one in which an operation panel is provided on the upper surface of a cooker main body (see, for example, Patent Document 1). In such a heat cooking apparatus, when a pot is placed on the top plate, the pot is heated to heat and cook the food in the pot. Also, such a heat cooking device is placed approximately in the center of the table when in use.

JP-A-9-213469

In such a heat cooking apparatus, as described above, the operation panel is provided on the cooker main body, so that the operation is performed by the person sitting closest to the operation panel. However, if this person leaves the seat temporarily, no one will be able to operate the heat cooking device, so there is a problem that cooking cannot be performed well and is dangerous. Furthermore, when the cooker body is placed substantially in the center of the dining table, it is necessary to reach out to operate the operation panel. For this reason, there is a problem that it is difficult to operate when other tableware is placed on the dining table.

In order to solve the above problems, the applicant of the present application filed a patent application for a heat cooking device that operates a cooking appliance body with a remote control (Japanese Patent Application No. 2018-60099). This heat cooking device has a cooking device main body and a remote control body that can be operated at a position remote from the cooking device main body, and preferably the cooking device main body and the remote control device are wirelessly connected. . In this way, by allowing the remote control unit to operate the main body of the cooking apparatus, anyone sitting at the dining table can easily operate the cooking apparatus.

However, such a cooking apparatus has the following new problems. That is, when the heating cooking apparatus is an induction heating cooking apparatus, and the infrared sensor of the infrared signal receiving section of the cooking apparatus body receives the infrared signal transmitted from the infrared LED of the infrared signal transmitting section of the remote controller. When the frequency of the current flowing through the induction heating coil matches or approximates the frequency of the infrared signal, electrical noise from the induction heating coil affects the infrared sensor, making remote control difficult. Specifically, the distance that can be operated by the remote control body has become shorter.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide an induction heating apparatus capable of stabilizing operation by a remote controller.

An induction heating cooking apparatus according to claim 1 of the present invention has a cooking apparatus main body having an induction heating coil, and a remote control body capable of operating the cooking apparatus main body at a position separated from the cooking apparatus main body, An induction heating cooking apparatus in which the cooking apparatus main body has an infrared signal receiving section and the remote control body has an infrared signal transmitting section, and when the cooking apparatus main body is set to a predetermined output, the induction When the frequency of the coil current of the heating coil becomes the frequency of the infrared signal or when the frequency of the infrared signal is multiplied, it has a control means for intermittently operating at a higher output than a predetermined output. .

The induction heating cooking apparatus according to claim 2 of the present invention is the induction heating cooking apparatus according to claim 1, wherein the control means is configured such that the frequency of the coil current of the induction heating coil is within a predetermined range including the frequency of the infrared signal. and when it reaches a predetermined range including the multiplication of the frequency of the infrared signal, intermittent operation is performed with an output higher than a predetermined output.

A control method for an induction heating cooking apparatus according to claim 4 of the present invention comprises a cooking apparatus main body having an induction heating coil, and a remote control body capable of operating the cooking apparatus main body at a position remote from the cooking apparatus main body. wherein the cooking apparatus body has an infrared signal receiving section, and the remote control body has an infrared signal transmitting section, wherein the cooking apparatus body is set to a predetermined output. When the frequency of the coil current of the induction heating coil becomes the frequency of the infrared signal or the frequency of the infrared signal is multiplied, intermittent operation is performed with an output higher than a predetermined output. is.

Further, according to claim 5 of the present invention, there is provided a control method for an induction heating cooking apparatus according to claim 4, wherein when the frequency of the coil current of the induction heating coil reaches a predetermined range including the frequency of the infrared signal, And when it reaches a predetermined range including the multiplication of the frequency of the infrared signal, it is intermittently operated with an output higher than a predetermined output.

In the heat cooking apparatus according to claim 1 of the present invention, by configuring as described above, the frequency of the coil current and the frequency of the infrared signal are not matched, and the noise from the induction heating coil is reduced by the infrared signal. It is possible to prevent the output signal of the signal receiving section from being adversely affected. Further, even when the frequency of the coil current of the induction heating coil becomes a multiple of the frequency of the infrared signal, the control means intermittently operates at an output higher than a predetermined output, thereby preventing the induction heating coil from noise is less likely to adversely affect the output signal of the infrared signal receiving section.

In addition, when the frequency of the coil current of the induction heating coil reaches a predetermined range including the frequency of the infrared signal, and when it reaches a predetermined range including the frequency of the infrared signal multiplied, By intermittently operating at an output higher than a predetermined output, it is possible to prevent noise from the induction heating coil from adversely affecting the output signal of the infrared signal receiving section.

Further, the heat cooking apparatus according to claim 3 of the present invention is configured as described above, so that the frequency of the coil current and the frequency of the infrared signal are not matched, and the noise from the induction heating coil is reduced to the above. It is possible to prevent the output signal of the infrared signal receiving section from being adversely affected. Further, even when the frequency of the coil current of the induction heating coil is multiplied by the frequency of the infrared signal, noise from the induction heating coil can be reduced by intermittent operation at an output higher than a predetermined output. It is possible to make the output signal of the external signal receiving section less likely to be adversely affected.

In addition, when the frequency of the coil current of the induction heating coil falls within a predetermined range including the frequency of the infrared signal and when falling within a predetermined range including the frequency multiplication of the infrared signal, the output is higher than the predetermined output. By intermittently operating at a high output, it is possible to prevent noise from the induction heating coil from adversely affecting the output signal of the infrared signal receiving section.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the heat cooking apparatus which shows 1st embodiment of this invention. It is a side view of a cooking apparatus main body equally. It is a top view of a cooking apparatus main body equally. Fig. 3 is an enlarged front view of the remote controller of the same; Fig. 3 is an enlarged plan view of the remote controller of the same; It is a schematic diagram of an electric circuit of the same. It is an explanatory view of the state of use of the same. Similarly, it is a flow chart of control. FIG. 10 is an explanatory diagram of the case where the frequencies of the coil current and the infrared signal do not match; FIG. 10 is an explanatory diagram of control when the coil current and the frequency of the infrared signal match. FIG. 10 is an explanatory diagram of another control when the frequencies of the coil current and the infrared signal are the same. FIG. 10 is an explanatory diagram of control when the coil current is a multiple of the frequency of the infrared signal.

A first embodiment of the present invention will be described below with reference to FIGS. 1 to 12. FIG. 1 is the heat cooking apparatus of the present invention. This heat cooking device 1 includes a cooking device main body 2 and a remote control body 3 . The heat cooking device 1 is an induction heating cooker.

The cooking apparatus main body 2 has a short cylindrical upper shell 4 , a dish-shaped lower shell 5 , and a disk-shaped top plate 6 provided on the upper shell 4 . An induction heating coil 7 as a heat source and an LED array 8 as display means are housed below the top plate 6 . Light emitted from this LED array 8 is transmitted through the top plate 6 and is visually recognized. A pot compatible with an induction heating cooker (not shown) can be placed on the top plate 6 and heated. Cutouts 9 and 10 are provided on the side surface of the upper shell 4 and the side surface of the lower shell 5, respectively. . A magnet plug of a power cord (not shown) is detachably connected to the power connection portion 11 . A main switch operation portion 12 and an output control switch operation portion 13 are provided on the side portion of the lower shell body 5 . Further, a plurality of (three in this embodiment) light receiving windows 15 of the infrared signal receiving section 14 are provided on the side portion of the lower shell 5 . These light receiving windows 15 appear in a side view. Further, these light receiving windows 15 are provided at equal angular intervals (120 degree intervals in this embodiment) around the vertical center line of the cooking apparatus main body 2 .

The remote control body 3 has a short cylindrical shape as a whole. The remote control unit 3 includes a short cylindrical body portion 16 and an operation portion 17 that is put on the body portion 16 . The operating portion 17 is provided so as to be rotatable in the horizontal direction and movable in the vertical direction with respect to the main body portion 16 . Further, the body portion 16 is provided with means (not shown) for detecting the amount of horizontal rotation of the operation portion 17 and the downward pressure. Furthermore, the lower end of the operating portion 17 is higher than the lower end of the main body portion 16 . Accordingly, the lower portion of the body portion 16 is exposed to the outside. A plurality of (three in the present embodiment) emission windows 19 of the infrared signal transmitter 18 are provided on the exposed lower side surface of the main body 16 . These emission windows 19 appear in a side view. Further, these emission windows 19 are provided at equal angular intervals (120° intervals in this embodiment) around the vertical center line of the remote control unit 3 . An infrared LED (not shown) is provided inside each of the emission windows 19 . That is, in the case of this embodiment, the infrared LEDs are provided at three locations, like the emission windows 19 . The number of infrared LEDs per location may be one or plural.

An outline of the electric circuit of the cooking apparatus main body 2 will be described. In this electric circuit, as shown in FIG. 6, an AC power supply 20 is connected to a rectifier circuit 20A, and the induction heating coil 7 is connected between both electrodes of the rectifier circuit 20A via an induction heating drive circuit 21 as a heat source drive circuit. are connected structures. The induction heating coil 7 is driven and controlled by the induction heating drive circuit 21 . A power supply circuit 22 and a microcomputer 23 as control means are connected in parallel with the induction heating coil 7 . Between the power supply circuit 22 and the microcomputer 23, a series circuit of a switch SW1 and a diode D is provided. The switch SW1 is of a self-reset type, and is operated by pressing the main switch operating portion 12. As shown in FIG. A series circuit of the switch SW1 and the diode D is connected to the power supply input PW of the microcomputer 23 . Further, a line branched from between the switch SW1 and the diode D is connected to the input section X of the microcomputer 23. As shown in FIG. Furthermore, a series circuit of field effect transistors (hereinafter referred to as FETs) 24 and 25 as switching elements is connected in parallel with the series circuit of the switch SW1 and the diode D. The output A of the microcomputer 23 is connected through a capacitor C to an integration circuit 26 as a smoothing means, and the integration circuit 26 is connected to the gate of the FET 24 . On the other hand, the microcomputer 23 has its output B connected to the gate of the FET 25 . The microcomputer 23 is connected to the induction heating drive circuit 21 and configured to be able to control the induction heating drive circuit 21 . Further, infrared sensors 27 , 28 and 29 are connected to the microcomputer 23 . The infrared sensor 27 is arranged inside the light receiving window 15A, the infrared sensor 28 is arranged inside the light receiving window 15B, and the infrared sensor 29 is arranged inside the light receiving window 15C. Also, the microcomputer 23 is connected to a switch SW2. The switch SW2 is also of a self-reset type, and is operated by pressing the output adjustment switch operating portion 13. FIG. Furthermore, the LED array 8 is connected to the microcomputer 23 .

With such a circuit configuration, although a large amount of power is supplied from the AC power supply 20 to the induction heating coil 7, the switch SW1 can be a switch with a relatively small capacity. This is because the current flowing through the switch SW1 needs only to have a sufficient value to activate the microcomputer 23. FIG.

The output of the induction heating coil 7 can be set stepwise by operating the output control switch operating section 13 or the operating section 17 of the remote control 3 . In this embodiment, it can be set in five stages (minimum value OP1 to maximum value OP5), but the number of stages is arbitrary.

Next, the operation of this embodiment will be described. First, the user places a pot compatible with an induction heating cooker (not shown) on the top plate 6, connects the magnet plug of the power cord (not shown) to the power supply connection portion 11, and connects the power plug to the AC power supply 20. Connecting. In this state, no current flows through the induction heating coil 7, and the microcomputer 23 does not start. When the main switch operating portion 12 is pressed, the switch SW1 is turned "on". Thus, when the switch SW1 is turned "on", power is supplied from the power supply circuit 22 to the power input part PW of the microcomputer 23 through the switch SW1 and the diode D, and the microcomputer 23 is activated. At the same time, the microcomputer 23 detects that the current flowing through the switch SW1 is supplied to the input section X. When the microcomputer 23 detects that the current is supplied to the input section X, the microcomputer 23 supplies an intermittent current from the output section A to the integrating circuit 26 . Since the current supplied from the output portion A is an intermittent current, it passes through the capacitor C and is supplied to the integrating circuit 26. FIG. This intermittent current is smoothed by the integration circuit 26 to become a DC current, which is supplied to the gate of the FET 24 . At the same time, a DC current is supplied from the output B of the microcomputer 23 to the gate of the FET 25 . By supplying currents to the gates of the FETs 24 and 25 in this way, the FETs 24 and 25 are turned on at the same time, and the power supply circuit 22 passes through the series circuit of the FETs 24 and 25 and the Power is supplied to the power input unit PW of the microcomputer 23 . Since the switch SW1 is a self-reset type switch as described above, it turns "OFF" when the user releases the main switch operation section 12. FIG. However, current continues to flow to the microcomputer 23 due to current flowing through the series circuit of the FETs 24 and 25 . By continuing to supply the current to the microcomputer 23, the currents continue to be supplied to the gates of the FETs 24 and 25, respectively. Therefore, the microcomputer 23 continues to operate. The current flowing through the series circuit of the FETs 24 and 25 is blocked by the diode D and therefore does not flow to the input X.

After the microcomputer 23 operates in this manner, the user presses the output adjustment switch operating portion 13 to turn on the switch SW2. By this operation, the microcomputer 23 controls the induction heating drive circuit 21 , and the induction heating drive circuit 21 drives and controls the induction heating coil 7 . That is, an alternating current is supplied to the induction heating coil 7 by the induction heating drive circuit 21 . The set output of the induction heating coil 7 when the switch SW2 is turned "on" is the minimum value OP1. Each time the microcomputer 23 detects that the switch SW2 is turned on by pressing the output adjustment switch operating section 13, the microcomputer 23 causes the induction heating drive circuit 21 to turn the induction heating coil 7 on. The output is controlled stepwise (minimum value OP1 to maximum value OP5). Further, the microcomputer 23 controls the number of LEDs to be emitted in the LED array 8 each time the switch SW2 is turned on. At this time, the number of LEDs to emit light in the LED array 8 corresponds to the output of the induction heating coil 7 . Therefore, the current output of the induction heating coil 7 can be known from the number of LEDs in the LED array 8 emitting light. Light emitted from the LEDs of the LED array 8 passes through the top plate 6 and is visually recognized.

Note that the control of the cooking apparatus body 2 can also be performed by operating the remote control body 3 . (However, only the operations from activation of the microcomputer 23 to the start of heating are performed by the main switch operation section 12 and the output adjustment switch operation section 13 of the cooking apparatus main body 2.) It is operated while placed on top. That is, when the remote control unit 3 is placed on the dining table T and the operation part 17 is pushed downward, the current to the induction heating coil 7 is cut off. Even if the operating portion 17 is pushed downward again, the energization of the induction heating coil 7 is not resumed. When the operating portion 17 is rotated clockwise, the output of the induction heating coil 7 increases, and when the operating portion 17 is rotated counterclockwise, the output of the induction heating coil 7 decreases.

A control signal by such an operation is transmitted as an infrared signal S from the three infrared LEDs (not shown) of the infrared signal transmission unit 18, and emitted from the emission windows 19, 19, 19. . That is, the infrared signal S is transmitted from the remote controller 3 in three directions. In addition, the infrared LED has a relatively wide irradiation angle (specifically, about 120 degrees). Therefore, the infrared signal S is transmitted over a wide range around the remote control 3 .

On the other hand, the infrared sensors 27, 28, 29 of the cooking apparatus main body 2 also have a relatively wide detection angle (specifically, approximately 140 degrees). Therefore, the infrared sensors 27 , 28 and 29 can receive the infrared signal S from all directions around the cooking apparatus main body 2 . For example, as shown in FIG. 7, the infrared signal S emitted from the light emitting window 19A of the remote control unit 3 placed at the position P1 on the dining table T is received by the light receiving window 15A of the cooking apparatus main body 2. is received by the infrared sensor 27 through . On the other hand, the infrared signal S emitted from the light emitting window 19B of the remote control unit 3 placed at the position P2 on the dining table T passes through the light receiving window 15C of the cooking apparatus main body 2 and reaches the infrared sensor. 29 receives. At the same time, the infrared signal S emitted from the light emitting window 19C is received by the infrared sensor 28 through the light receiving window 15B of the cooking apparatus main body 2. As shown in FIG. That is, in the case of this example, two systems of infrared signals S are exchanged. Depending on the positional relationship between the cooking apparatus main body 2 and the remote controller 3, the infrared signal S transmitted by the infrared LED at one location may be received by two infrared sensors, or The infrared signal S transmitted by the LED may be received by one infrared sensor. That is, by receiving the infrared signal S transmitted by any of the infrared LEDs by any of the infrared sensors 27, 28, 29, the remote control 3 can control the cooking apparatus main body 2. becomes. Since the infrared signals S transmitted in three directions from the remote controller 3 are all the same command signal, even if they are received by the plurality of infrared sensors 27, 28 and 29, the command will be inconsistent. do not have. Note that FIG. 7 does not provide two remote control units 3 for one cooking apparatus main body 2 . The case where one remote control unit 3 is placed at position P1 on the dining table T and the case where it is placed at position P2 for one cooking apparatus main body 2 are shown simultaneously in one drawing.

With the remote control unit 3 placed on the dining table T, when the operation unit 17 is pushed downward or the main switch operation unit 12 is pushed to turn on the switch SW1, the microcomputer 23 is turned on. cuts off the energization of the induction heating coil 7 and then stops its own operation. When the induction heating coil 7 is de-energized by operating the remote control 3, when the infrared sensors 27, 28, 29 receive the infrared signal S of the stop command, the microcomputer 23 detects the induction heating. After the drive circuit 21 stops energizing the induction heating coil 7, the current supply from the output portions A and B is stopped. On the other hand, when the induction heating coil 7 is deenergized by operating the main switch operation section 12, when it is detected that the current is supplied from the power supply circuit 22 to the input section X through the switch SW1, the micro After the induction heating drive circuit 21 stops the induction heating coil 7, the computer 23 stops the current supply from the output portions A and B. FIG. As a result, the current supply to the gates of the FETs 24 and 25 is cut off, so that both of these FETs 24 and 25 are turned off, and the power supply circuit 22 passes through the series circuit of the FETs 24 and 25 to the microcomputer 23 . is also cut off. This causes the microcomputer 23 to stop. Thus, when the microcomputer 23 stops, it becomes impossible to control the induction heating drive circuit 21 and supply current to the induction heating coil 7 . Therefore, it is possible to reduce the possibility that current is unintentionally supplied to the induction heating coil 7 due to malfunction of the microcomputer 23 when not in use. Thereby, the safety of the heat cooking device 1 can be enhanced. When the microcomputer 23 determines that there is no operation for a predetermined time (for example, 30 minutes) during heating by the induction heating coil 7, the induction heating drive circuit 21 stops energizing the induction heating coil 7. , the current supply from the output portions A and B is stopped. This causes the microcomputer 23 to stop.

By connecting the FETs 24 and 25 in series, even if one of the FETs 24 or 25 fails in a short-circuit mode, by stopping the power supply to the gate of the other FET 25 or 24, the microcomputer 23 can be stopped. Therefore, the possibility that the microcomputer 23 cannot be stopped can be reduced. Further, if the microcomputer 23 fails, the intermittent current cannot be output from the output section A of the microcomputer 23 . If no current can be supplied from the output section A, no current is supplied to the gate of the FET 24 . Therefore, the FET 24 remains "OFF", and the microcomputer 23 also stops when the switch SW1 is turned "OFF". Conversely, if the current supplied from the output section A becomes a direct current, this direct current cannot pass through the capacitor C, so that no current is supplied to the gate of the FET 24 as well. Therefore, the FET 24 remains "OFF", and the microcomputer 23 also stops when the switch SW1 is turned "OFF". Therefore, it is possible to prevent current from being supplied to the induction heating coil 7 when the microcomputer 23 fails.

The energization control of the induction heating coil 7 during cooking will be described. When the output adjustment switch operation unit 13 is pressed while the microcomputer 23 is in operation, the induction heating drive circuit 21 causes the induction heating drive circuit 21 to turn on the induction heating. An alternating current (coil current) flows through the heating coil 7 . The frequency of the coil current varies depending on the output of the induction heating coil 7 and the type of pot. That is, even if the output of the induction heating coil 7 is the same, the frequency of the coil current differs depending on the type of pan. Further, even if the same pot is used, the frequency of the coil current differs if the output of the induction heating coil 7 differs. When the pot is the same, the higher the output of the induction heating coil 7, the lower the frequency of the coil current, and the lower the output of the induction heating coil 7, the higher the frequency of the coil current. The frequency of the coil current is defined as 20-100 kHz. In other words, it can be said that the induction heating coil 7 generates noise of 20 to 100 kHz. On the other hand, the frequency of the infrared signal transmitted from the remote control means 3 is defined as 38 kHz.

As shown in FIG. 8, by operating the output adjustment switch operating section 13 or the operating section 17 of the remote control 3, the set output OPx is set. At the same time, the actual output OPy is also automatically set. Note that OPx=OPy in the initial stage. Then, when the induction heating drive circuit 21 causes the induction heating coil 7 to flow an alternating current corresponding to the output OPx, the frequency of the coil current changes to F. For example, as shown in FIG. 9, when the set output OPx is the maximum output OP5, the frequency F of the coil current is F5 kHz. If this frequency F5 kHz is outside the frequency range of 38 kHz of the infrared signal and the avoidance frequency range of ±4 kHz around this frequency, the induction heating drive circuit 21 controlled by the microcomputer 23 reduces the frequency of the coil current to F5 kHz. remain as In this case, the actual output OPy does not fluctuate and remains OPx=OPy, so the induction heating drive circuit 21 controlled by the microcomputer 23 performs heating control with the set output OPx.

On the other hand, FIGS. 10 and 11 show the case where the set output OPx is OP3, the frequency F of the coil current is F3 kHz, and this frequency F3 kHz is within the aforementioned avoidance frequency range. In this case, if the distance between the cooking apparatus main body 2 and the remote control means 3 is long, there is a possibility that the cooking apparatus main body 2 cannot be operated by the remote control means 3 . This is because when the distance between the cooking apparatus main body 2 and the remote control means 3 is long, the level of the infrared signal received by the infrared sensors 27, 28, and 29 is relatively lowered. Since the signal levels of the analog portions at 27, 28, and 29 are also relatively lowered, not only is the SN ratio worsened, but the noise frequency approximates the signal frequency, making it difficult to distinguish between the signal and the noise. It's for.

In this case, the induction heating drive circuit 21 controlled by the microcomputer 23 raises the output by one step to make the actual output OPy OP4. Then, the coil current frequency F=F4 kHz at this actual output OPy=OP4 is measured. When this frequency F4 kHz goes out of the avoidance frequency range described above, the induction heating drive circuit 21 controlled by the microcomputer 23 changes the output of the induction heating coil 7 to the intermittent output of the actual output OPy=OP4. By doing so, the set output OPx=OP3 is simulated. That is, the induction heating drive circuit 21 controlled by the microcomputer 23 performs on-off control to turn on the entire OP3/OP4 and turn off the entire (OP4-OP3)/OP4 with the actual output OPy=OP4. I do.

As shown in FIG. 11, if the frequency F4 kHz remains within the avoidance frequency range, the induction heating drive circuit 21 controlled by the microcomputer 23 further raises the output of the induction heating coil 7 by one step. , the actual output OPy=OP5. Then, the coil current frequency F=F5 kHz at this actual output OPy=OP5 is measured. When this frequency F5 kHz goes out of the avoidance frequency range described above, the induction heating drive circuit 21 controlled by the microcomputer 23 changes the output of the induction heating coil 7 to the intermittent output of the actual output OPy=OP5. By doing so, the set output OPx=OP3 is simulated. That is, the induction heating drive circuit 21 controlled by the microcomputer 23 performs on-off control to turn on the entire OP3/OP5 and turn off the entire (OP5-OP3)/OP5 with the actual output OPy=OP5. I do.

Further, FIG. 12 shows that when the set output OPx is OP3, the frequency F of the coil current is F3'kHz, and this frequency F3'kHz is a multiple of the avoidance frequency range described above, specifically the range of 76±8kHz. This is the case when Also in this case, if the distance between the cooking apparatus main body 2 and the remote control means 3 is long, the remote control means 3 may not be able to operate the cooking apparatus main body 2 .

Also in this case, the induction heating drive circuit 21 controlled by the microcomputer 23 raises the output by one step to make the actual output OPy OP4. Then, the coil current frequency F=F4'kHz at this actual output OPy=OP4 is measured. When the frequency F4'kHz goes out of the avoidance frequency range described above, the induction heating drive circuit 21 controlled by the microcomputer 23 intermittently changes the output of the induction heating coil 7 to the actual output OPy=OP4. By setting it as an output, the set output OPx=OP3 is simulated. That is, the induction heating drive circuit 21 controlled by the microcomputer 23 performs on-off control to turn on the entire OP3/OP4 and turn off the entire (OP4-OP3)/OP4 with the actual output OPy=OP4. I do.

In this way, when the frequency F of the coil current reaches the infrared signal frequency of 38 kHz, the avoidance frequency range of ±4 kHz around this frequency, and the multiplication range of 76 kHz ±8 kHz, the actual output OPy is increased. By lowering the frequency F of the coil current by using the heater and intermittent output based on the ratio between the set output OPx and the actual output OPy, it is possible to pseudo-heat the pot with the set output OPx and even from a remote position. The cooking apparatus main body 2 can be operated by the remote control means 3 .

As described above, the present invention has the cooking apparatus main body 2 having the induction heating coil 7 and the remote control unit 3 capable of operating the cooking apparatus main body 2 at a position spaced apart from the cooking apparatus main body 2, and the cooking device described above is provided. The main body 2 of the induction heating cooking device 1 has an infrared signal receiving section 14, and the remote control 3 has an infrared signal transmitting section 18. The cooking device main body 2 is set to a predetermined set output OPx. When the frequency F of the coil current of the induction heating coil 7 becomes the frequency 38 kHz of the infrared signal, it has a microcomputer 23 as control means for intermittent operation with the actual output OPy higher than the set output OPx. By doing so, the frequency F of the coil current does not coincide with the frequency of the infrared signal, and the noise from the induction heating coil 7 is reflected in the output signals of the infrared sensors 27, 28 and 29 of the infrared signal receiver 14. It is possible to make it difficult to give a bad influence.

Further, according to the present invention, the microcomputer 23, when the frequency F of the coil current of the induction heating coil 7 falls within a predetermined range of 34 to 42 kHz, which includes the infrared signal frequency of 38 kHz, The output signals of the infrared sensors 27, 28 and 29 of the infrared signal receiver 14 are less likely to be adversely affected by noise from the induction heating coil 7 by intermittently operating at a high actual output OPy. can be done.

Further, according to the present invention, when the frequency F of the coil current of the induction heating coil 7 is multiplied by the frequency 38 kHz of the infrared signal, the microcomputer 23 intermittently operates at the actual output OPy higher than the set output OPx. Thus, the noise from the induction heating coil 7 can be made less likely to adversely affect the output signals of the infrared sensors 27 , 28 , 29 of the infrared signal receiver 14 .

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the gist of the invention. For example, in the above embodiment, both the set output OPx and the actual output OPy are set in five stages, but the actual output OPy may be set in finer stages (for example, ten stages).

REFERENCE SIGNS LIST 1 induction heating cooking device 2 cooking device body 3 remote control unit 7 induction heating coil 14 infrared signal receiver 15 light receiving window (infrared signal receiver)
18 infrared signal transmitter 19 emission window (infrared signal transmitter)
23 microcomputer (control means)
27, 28, 29 infrared sensor (infrared signal receiver)
S Infrared signal F Coil current frequency OPx Set output OPy Actual output

Claims (4)

a cooking appliance body having an induction heating coil; and a remote control body capable of operating the cooking appliance body at a position remote from the cooking appliance body, the cooking appliance body having an infrared signal receiving section, An induction heating cooking device in which the remote control body has an infrared signal transmission unit,
If the frequency of the coil current of the induction heating coil becomes the frequency of the infrared signal when the cooking apparatus body is set to a predetermined output, or if the frequency of the infrared signal is multiplied, a predetermined output is obtained. An induction heating cooking apparatus characterized by having control means for intermittent operation with a higher output than the above. When the frequency of the coil current of the induction heating coil falls within a predetermined range including the frequency of the infrared signal, and when the frequency of the infrared signal reaches a predetermined range including multiplication of the frequency of the infrared signal, a predetermined 2. The induction heating cooking apparatus according to claim 1, wherein the output is higher than the output and is operated intermittently. a cooking appliance body having an induction heating coil; and a remote control body capable of operating the cooking appliance body at a position remote from the cooking appliance body, the cooking appliance body having an infrared signal receiving section, A control method for an induction heating cooking device in which a remote control body has an infrared signal transmission unit,
If the frequency of the coil current of the induction heating coil becomes the frequency of the infrared signal when the cooking apparatus body is set to a predetermined output, or if the frequency of the infrared signal is multiplied, a predetermined output is obtained. A control method for an induction heating cooking apparatus characterized by intermittently operating at a higher output than the above. When the frequency of the coil current of the induction heating coil falls within a predetermined range including the frequency of the infrared signal and when within a predetermined range including the frequency multiplication of the infrared signal, an output higher than a predetermined output 5. The control method for an induction heating cooking apparatus according to claim 4, wherein the induction heating cooking apparatus is operated intermittently.

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