JP5204009B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device having, for example, three heating ports on a top plate, and more particularly to a heating cooking device in which electric power used by two heating ports among the three heating ports is limited.

  In the power system of home appliances, if the power consumption of the home appliances exceeds the contracted power consumption, the power of the home appliances is cut off or the power of the home appliances is set according to the preset usage priority from the home appliances in use The power consumption is reduced so that it does not exceed the contract power consumption (see, for example, Patent Document 1).

JP-A-9-252533 (page 4-5, FIGS. 2 and 3)

  By the way, the maximum power consumption is set for the cooking device. For example, in a cooking device having three heating ports on the top plate, a heating coil is used as a heating source for the three heating ports. Further, this type of cooking device is provided with a grill using a sheathed heater as a heating source. The total maximum power consumption of these four heating sources is set to 5.8 KW, for example. When the power consumption of the heating cooker exceeds 5.8 KW, the power is limited so that the power is reduced to 5.8 KW or less by lowering the power from the heating source with the lower priority of use.

  However, in the above-described conventional cooking device, an inverter that supplies high-frequency current to the heating coil, an inverter drive circuit, and a circuit board on which a control unit that controls the drive circuit is mounted correspond to the three heating coils. Since it is arrange | positioned, the volume of the housing | casing of a heating cooker increased, and there existed a subject that the increase in cost was caused.

  The present invention has been made in order to solve the above-described problems, and a heating cooker using a heating coil as a heating source for three heating ports arranged on the top plate is miniaturized to reduce costs. It is an object of the present invention to provide a cooking device that can handle the above.

The heating cooker according to the present invention includes a plurality of heating coils arranged opposite to the back surface of the top plate on which the cooking container is placed, a DC voltage converted into an AC voltage, and a plurality of high frequency currents are respectively supplied to the plurality of heating coils. A plurality of inverters that supply the power, and a priority of use of at least two heating coils among the plurality of heating coils is set in accordance with the cooking mode, and a total of power set in the two heating coils is preset. A power limiter that lowers the power of the heating coil with a lower priority of use so that the power consumption of the heating coil is lower than the first maximum power consumption when exceeding the maximum power consumption of in the cooking device that implements at least the same circuit board two inverters to the power limiting portion, the total electricity plus set power of the other heating means sets the power of the two heating coils Exceeds the preset second maximum used power (second maximum used power> first maximum used power), so that the set power of the two heating coils is equal to or lower than the first maximum used power. Among the two heating coils, the power of the heating coil with the lowest use priority is lowered, and the total power is less than or equal to the second maximum power consumption. Lower the power of the low heating means .

In the present invention, the total power obtained by adding the set power of the other heating means to the set power of the two heating coils is the second maximum used power (second maximum used power> first maximum power) set in advance. When the power consumption exceeds the power consumption), the power of the heating coil with the lower priority of use is reduced among the two heating coils so that the set power of the two heating coils is equal to or lower than the first maximum power consumption. The electric power of the heating means having a lower use priority is reduced among all the heating means including the two heating coils so that the electric power is less than or equal to 2. With this configuration, the element heat generation temperature due to the drive of each inverter on the same circuit board does not become abnormal, and damage to the heat generation element can be prevented. For this reason, it is possible to mount an inverter that supplies high-frequency current to the two heating coils on the same circuit board, which makes it possible to reduce the number of circuit boards compared to the prior art and reduce the assembly process of the cooker. It is possible to reduce the cost. Moreover, since a circuit board can be reduced, there exists an effect that size reduction of this cooker is attained.

It is an external appearance perspective view of the heating cooker which shows embodiment of this invention. It is a control block diagram of the heating cooker which concerns on embodiment. It is a flowchart which shows the operation | movement of the electric power restriction | limiting with respect to the heating source of the main control part in the heating cooker of embodiment. It is a flowchart following FIG.

FIG. 1 is an external perspective view of a cooking device showing an embodiment of the present invention, and FIG. 2 is a control block diagram of the cooking device according to the embodiment.
1 and 2, a heat-resistant tempered glass top plate 3 having a peripheral edge fixed by a frame 4 is placed on the upper portion of the casing 2 of the cooker 1. For example, a left heating port 5, a right heating port 6, and a central heating port 7 that indicate the placement positions of cooking containers such as a pan and a frying pan are arranged on the top plate 3. A left heating coil 5a (hereinafter referred to as “left heater 5a”) shown in FIG. 2 is accommodated in the housing 2 so as to face the back surface of the left heating port 5, and a right heating coil 6a (hereinafter referred to as “right heater 6a”). And the central heating coil 7 a (hereinafter referred to as “central heater 7 a”) is accommodated facing the back surface of the central heating port 7. Furthermore, the housing 2 accommodates a grill 8 having a front door that can be opened and closed. The grill 8 is provided with a grill heater 8a including an upper heater and a lower heater.

  A left heating power display unit 10a that displays the heating power (electric power) of the left heater 5a and a left liquid crystal display unit 11a that displays the operating state of the left heater 5a are disposed on the left side of the top 3 in front. A right heating power display unit 10b that displays the heating power of the right heater 6a and a right liquid crystal display unit 11b that displays the operation state of the right heater 6a are disposed on the right side of the top 3 in front. In addition, a central heating power display unit 10c for displaying the heating power of the central heater 7a is provided at the central portion of the top plate 3, and further, the central heater 7a and the grill heater 8a are provided at the front central portion of the top plate 3. A central liquid crystal display unit 11c for displaying the operation state is arranged.

  An upper surface operation unit 9 is provided on the frame 4 on the near side of the top plate 3, and a front operation unit 12 is provided on the front surface of the housing 2 adjacent to the door of the grill 8. The upper surface operation unit 9 includes a plurality of key switches for setting the power of the left and right heaters 5a and 6a, the fried food mode, the 3 kW mode, and the like, and a key switch for the grill 8 for setting the grill mode and the like. Has been. The front operation unit 12 is provided with a heating power adjustment dial for adjusting each power of the left and right heaters 5a, 6a and the central heater 7a. Each of the heating power adjustment dials protrudes toward the front side when turned on, and is turned off when pushed.

  The left heater 5a described above is connected to an inverter 22 mounted on the circuit board 20, as shown in FIG. In addition to the inverter 22, the circuit board 20 is mounted with a converter 21, an inverter driving unit 23, for example, a first control unit 24 including a microcomputer. The converter 21 converts AC voltage into DC voltage and supplies it to the inverter 22. The inverter 22 is constituted by, for example, a half-bridge inverter that converts the DC voltage from the converter 21 into AC and supplies a high-frequency current to the right heater 5a. The inverter drive unit 23 generates a drive signal for driving the switching element (for example, IGBT) of the inverter 22 based on the control from the first control unit 24. The first control unit 24 controls the inverter driving unit 23 so that the set power is output to the left heater 5a when detecting the set power according to an instruction from the main control unit 50 described later. In addition, when the cooking temperature is set, temperature information during heating is notified to the main control unit 50, and when an inappropriate cooking container or abnormal temperature is detected, error information is notified to the main control unit 50.

  The right heater 6 a is connected to an inverter 32 mounted on the circuit board 30, and the central heater 7 a is connected to an inverter 35 mounted on the same circuit board 30. In addition to the above-described inverters 32 and 35, the circuit board 30 includes a converter 31 disposed on the input side of the inverter 32, an inverter drive unit 33 that drives the inverter 32, and a converter 34 disposed on the input side of the inverter 35. An inverter drive unit 36 that drives the inverter 35, a second control unit 37 that controls the inverter drive units 33 and 36, and the like are mounted. Each of these circuit units is composed of, for example, an intelligent power module. When the second control unit 37 detects the set power of the right heater 6a according to the instruction from the main control unit 50, the second control unit 37 controls the inverter drive unit 33 so that the set power is output to the right heater 6a, and the central heater 7a When the set power is detected, the inverter drive unit 36 is controlled so that the set power is output to the central heater 7a. Further, as described above, when the cooking temperature is set, the main control unit 50 is notified of temperature information during heating, and when an inappropriate cooking container or abnormal temperature is detected, error information is sent to the main control unit. 50 is notified.

  The grill heater 8 a is connected to a heater energization circuit 41 mounted on the circuit board 40. In addition to the heater energization circuit 41 described above, a third control unit 42 and the like are mounted on the circuit board 40. When the third control unit 42 detects the set power according to the instruction from the main control unit 50, the third control unit 42 controls the heater energization circuit 41 so that the set power is output to the grill heater 8a. Further, when the internal temperature of the grill 8 becomes an abnormal temperature during heating, the information is notified to the main control unit 50.

  The circuit boards 20, 30, and 40 described above are installed at positions away from the heaters 5 a, 6 a, and 7 a and the grill 8 in the casing 2 of the cooker 1, and are cooled during use of the cooker 1. It is cooled by a fan (not shown).

  The main control unit 50 detects the heating source (the left heater 5a, the right heater 6a, and the central heater 7a) to be energized by turning on the front operation unit 12 (heating power adjustment dial), and then detects the front operation unit 12 or the upper surface. The set power of the heating source to be energized is detected by operating the operation unit 9. And a control part (1st, 2nd and 3rd control part) is discriminate | determined from the heating source of energization control object, setting electric power is notified, and it operates. Moreover, when the power of the heating source to be energized is set, it is displayed on the thermal power display unit (the left thermal power display unit 10a, the right thermal power display unit 10b, and the central thermal power display unit 10c), and the operation state (normal heating mode, The frying mode, the kettle mode, etc.) are displayed on the liquid crystal display (left liquid crystal display 11a, right liquid crystal display 11b, and central liquid crystal display 11c).

  The main control unit 50 has, as data, the maximum power consumption set according to the combination of heating sources. Specifically, the maximum used power (first maximum used power) for the right heater 6a and the central heater 7a is, for example, 4 kw. When the total power of the right heater 6a and the central heater 7a exceeds 4 kw, two inverters 32 and 35 are mounted on one circuit board 30 and are configured by one air path (not shown). The switching element of the inverters 32 and 35 may be damaged due to the high temperature. In order to prevent this, the maximum power consumption (4 kW) is set. The maximum power consumption for the three heating sources of the left heater 5a, the right heater 6a, and the central heater 7a is, for example, 5.5 kw, and the maximum power consumption (second maximum power consumption) for the three heating sources and the grill heater 8a is For example, it is set to 5.8 kw. This 5.8 kw is the maximum power consumption of the cooker 1 defined by the Fire Service Law.

  Moreover, the use priority order of the heat source is set to the main control unit 50 according to various preset cooking modes. For example, the cooking mode includes a normal heating mode, a 3 kW mode, a fried food mode, and a grill mode. Among them, the normal heating mode has the lowest use priority, and the grill mode and the fried food mode have the highest use priority. In the 3 kW mode, the use priority is set lower than the grill mode and higher than the normal heating mode. In the normal heating mode, when “strong / medium / weak” heating power (electric power) is selected by a key switch provided on the upper surface operation unit 9 or when a heating power adjustment dial provided on the front operation unit 12 is used ( When (power) is set. In this normal heating mode, when the power of the left heater 5a is set, and then the power of the central heater 7a is set and the heating operation is performed, the power of the right heater 6a is set. The lower heater is the right heater 6a, and the next lower priority of use is the central heater 7a. In addition to the cooking mode described above, there are a heat retention mode, a stew mode, and the like.

Here, operation | movement of the main control part 50 which performs electric power restriction | limiting with respect to a heat source is demonstrated based on FIG.3 and FIG.4. FIG.3 and FIG.4 is a flowchart which shows the operation | movement of the electric power limitation with respect to the heating source of the main-control part in the heating cooker of embodiment.
First, the main control unit 50 determines whether the selection of the heating source has been detected (S1). It is determined that the heating source has been selected when the start switch of the grill 8 provided on the upper surface operation unit 9 or the on operation of the heating power adjustment dial provided on the front operation unit 12 is detected. When the selection of the heating source is detected, it is determined whether there is one selected heating source (S2). In the case of one, it returns to S1 and repeats the operation | movement mentioned above. For example, when the 3 kW mode is set for the right heater 6a, the maximum power consumption is 4 kW or less. When the same 3 kW mode is set for the left heater 5a, the maximum power consumption is 5.5 kW. This is because when the grill mode (for example, 2.5 kW) is set, it is 5.8 kW or less, which is the maximum power consumption of the cooker, and it is not necessary to limit power.

  When there is a heating source used before detecting the selection of the heating source in S1, the main control unit 50 selects the currently used heating source because there is not one selected heating source. It is determined whether the heating source is the right heater 6a and the central heater 7a (S3). When it is determined that the heating source is the right heater 6a and the central heater 7a, the total power P set in the right heater 6a and the central heater 7a is calculated (S4), and it is determined whether it exceeds 4 kW (S5). When the electric power P is 4 kw or less, it returns to S1 and it is determined whether the new heating source was selected.

  Moreover, when the electric power P exceeds 4 kw, the electric power of the heating source with a low use priority is lowered | hung and the total electric power P is made into 4 kw or less (S6). For example, when the 3 kW mode is set for the right heater 6a and 1.5 kW is set for the central heater 7a in the normal heating mode, the power of the central heater 7a having a low use priority is reduced by at least 0.5 kW. Thereby, it becomes possible to suppress the high temperature of the circuit board 30 by driving the inverters 32 and 35 of the right heater 6a and the central heater 7a mounted on the same circuit board 30, and the switching elements of the inverters 32 and 35 can be suppressed. Damage can be prevented.

  When determining that the heating source is not the right heater 6a and the central heater 7a in S3, the main control unit 50 determines whether the heating source (grill heater 8a) of the grill 8 is selected (S7). If the grill heater 8a is selected, the process proceeds to S21. If the grill heater 8a is not selected, it is determined whether the right heater 6a and the central heater 7a are selected (S8). For example, when the left heater 5a is selected first and then the right heater 6a or the central heater 7a is selected, it is determined that the right heater 6a and the central heater 7a are not selected, and the process proceeds to S18.

  Further, for example, when the right heater 6a is first selected, the left heater 5a is subsequently selected, and then the central heater 7a is selected, it is determined that the right heater 6a and the central heater 7a are selected, First, the total power P set for the right heater 6a and the central heater 7a is calculated (S9). Then, it is determined whether or not the total power P exceeds 4 kW (S10). When the total power P is 4 kW or less, the process proceeds to S15, but when the total power P exceeds 4 kW, as described above. The power of the central heater 7a having a low use priority is lowered to make the total power P 4 kw or less (S11).

  Further, for example, when the left heater 5a is selected after the right heater 6a and the central heater 7a are selected, the total power P set in the right heater 6a and the central heater 7a is calculated in the same manner as described above (S9). ), It is determined whether or not the total power P exceeds 4 kW (S10). In this case, since the right heater 6a and the central heater 7a are selected before the left heater 5a, the total power P of the right heater 6a and the central heater 7a is calculated, and whether the total power P exceeds 4 kW. The determination of whether will be the second time. This is because the electric power of the right heater 6a or the central heater 7a that has already been heated may be increased after the electric power of the left heater 5a is set. Also in this case, when the total power P of the right heater 6a and the central heater 7a is 4 kW or less, the process proceeds to S15. However, when the total power P exceeds 4 kW, the power of the central heater 7a having a lower use priority is reduced. The total power P is set to 4 kW or less (S11).

  The main control unit 50 calculates the total power P ′ of the right heater 6a and the central heater 7a due to power reduction (power limitation) and the total power P1 of the set power of the left heater 5a (S12), and the total power P1 is 5.5 kW. It is determined whether or not (S13). When the total power P1 is 5.5 kw or less, the process returns to S1. However, when it is determined that the total power P1 exceeds 5.5 kw, the power of the heating source having a low use priority is lowered to reduce the total power P1 to 5 .5 kw or less (S14), the process returns to S1. For example, when the right heater 6a and the central heater 7a are operating in the normal heating mode, if the total power P1 exceeds 5.5 kw due to the power setting of the left heater 5a, the usage priority order among these three heating sources Is the left heater 5a set later, so that the electric power is lowered to make the total electric power P1 less than 5.5 kw.

  Further, when determining that the total power P of the right heater 6a and the central heater 7a is 4 kW or less in S10, the main control unit 50 calculates the total power P and the total power P2 of the left heater 5a (S15), It is determined whether or not it exceeds 5.5 kw (S16). When the total power P2 does not exceed 5.5 kw, the process returns to S1. However, when it is determined that the total power P2 exceeds 5.5 kw, the power of the heating source having a low use priority is reduced to reduce the total power P2 Is set to 5.5 kw or less (S17), and the process returns to S1. Also in this case, since the use priority of the left heater 5a set with power after the right heater 6a and the central heater 7a is the lowest, the set power of the left heater 5a is lowered to make the total power P2 5.5 or less.

  When determining that the right heater 6a and the central heater 7a are not selected in S8, the main control unit 50 calculates the total power P3 of the selected heating source (S18), and the total power P3 is 5 It is determined whether or not it exceeds 5 kw (S19). When the total power P3 does not exceed 5.5 kw, the process returns to S1. However, when it is determined that the total power P3 exceeds 5.5 kw, the power of the heating source having a low use priority is lowered to reduce the total power P3. Is set to 5.5 kw or less (S20), and the process returns to S1. For example, when the heating source is the left heater 5a and the right heater 6a and both are in the 3 kW mode, the priority of use is the same, but the power of the heating source selected later is lowered to reduce the total power P3 to 5.5 kW or less. To.

  Further, when determining that the heating source of the grill 8 is selected in S7, the main control unit 50 determines whether the right heater 6a and the central heater 7a are selected (S21). For example, when the left heater 5a is first selected, the right heater 6a is subsequently selected, and the grill heater 8a that is the heating source of the grill 8 is selected, the right heater 6a and the central heater 7a are not selected. And the process proceeds to S31.

  Further, for example, when the grill heater 8a is first selected, the right heater 6a is subsequently selected, and then the central heater 7a is selected, it is determined that the right heater 6a and the central heater 7a are selected, First, the total power P set for the right heater 6a and the central heater 7a is calculated (S22). Then, it is determined whether or not the total power P exceeds 4 kw (S23). When the total power P is 4 kw or less, the process proceeds to S28, but when the total power P exceeds 4 kw, the use priority order The power of the low central heater 7a is lowered to make the total power P 4 kw or less (S24).

  Further, for example, when the grill heater 8a is selected after the right heater 6a and the central heater 7a are selected, the total power P set in the right heater 6a and the central heater 7a is calculated as described above (S22). ), It is determined whether or not the total power P exceeds 4 kW (S23). Also in this case, as described above, since the right heater 6a and the central heater 7a are selected before the grill heater 8a, the total power P of the right heater 6a and the central heater 7a is calculated, and the total power P is 4 kW. This is the second time the decision is made whether or not. This is because, as described above, after the grill mode is set, there is a possibility that the electric power of the right heater 6a or the central heater 7a that has already been heated is increased. Also in this case, when the total power P of the right heater 6a and the central heater 7a is 4 kW or less, the process proceeds to S28, but when the total power P exceeds 4 kW, the right heater 6a and the central heater 7a are set later. The power of the heating source is lowered to make the total power P 4 kw or less (S24).

  The main control unit 50 calculates the total power P ′ of the right heater 6a and the central heater 7a due to power reduction (power limitation) and the total power P4 of the set power of the grill heater 8a in the grill mode (S25), and the total power P4 is It is determined whether it exceeds 5.8 kw (S26). When the total power P4 is less than or equal to 5.8 kw, the process returns to S1. However, when it is determined that the total power P4 exceeds 5.8 kw, the power of the heating source having a low use priority is lowered to reduce the total power P4 to 5 .8 kw or less (S27), the process returns to S1. For example, when the set power of the grill heater 8a is 2.5 kW and the total power P ′ of the right heater 6a and the central heater 7a is 4 kW, the total power P4 is 6.5 kW. In this case, since the grill heater 8a has a high priority of use, the power of the central heater 7a set later, for example, of the right heater 6a and the central heater 7a is lowered to make the total power P4 5.8 kw or less.

  Here, when the left heater 5a is added as the 3 kW mode, the total power P4 is 8.8 kW at the maximum. In this case, since the use priority of the grill heater 8a and the left heater 5a is high, the power of the heating source set later among the right heater 6a and the central heater 7a is lowered as described above. For example, if the total power P4 exceeds 5.8 kw even if the set power of the central heater 7a is reduced to 0 kW, the set power of the right heater 6a having the next lowest priority of use is lowered to reduce the total power P4 to 5.8 kW. Below.

  Further, when the main control unit 50 determines in S23 that the total power P of the right heater 6a and the central heater 7a is 4 kW or less, the main control unit 50 calculates the total power P and the total power P5 of the other heating source (grill heater 8a). It is calculated (S28), and it is determined whether it exceeds 5.8 kw (S29). When the total power P5 does not exceed 5.8 kw, the process returns to S1. However, when it is determined that the total power P5 exceeds 5.8 kw, the power of the heating source having a low use priority is reduced to reduce the total power P5. Is set to 5.8 kw or less (S30), and the process returns to S1. Also in this case, the set power of the central heater 7a having the lowest use priority is further lowered to make the total power P5 5.8 kw or less. Similarly to the above, when the left heater 5a is added as the 3 kW mode, the total power P5 is 8.8 kW at the maximum. In this case, since the use priority of the grill heater 8a and the left heater 5a is high, the set power of the central heater 7a having the lowest use priority is lowered as described above. If the total power P5 exceeds 5.8kw even if the set power of the central heater 7a is lowered to 0kw, the set power of the right heater 6a having the next lowest priority of use is lowered to reduce the total power P5 to 5.8kw or less. To.

  When determining that the right heater 6a and the central heater 7a are not selected in S21, the main control unit 50 calculates the total power P6 of the selected heating source (S31), and the total power P6 is 5 It is determined whether it exceeds .8 kw (S32). When the total power P6 does not exceed 5.8 kw, the process returns to S1. However, when it is determined that the total power P6 exceeds 5.8 kw, the power of the heating source with a lower use priority is reduced to reduce the total power P6. Is set to 5.8 kw or less (S33), and the process returns to S1. For example, when the heating source is the grill heater 8a and the left and right heaters 5a and 6a, and the left and right heaters 5a and 6a are in the normal heating mode of 2.5 kw, the left and right heaters 5a having a lower use priority than the grill heater 8a. , 6a, the set power is lowered. For example, when the right heater 6a is selected after the left heater 5a, the set power of the right heater 6a selected later is lowered so that the total power P6 is 5.8 kW or less.

  As described above, according to the embodiment, when the total power P of the right heater 6a and the central heater 7a exceeds 4 kW, the power with the lower priority of use is lowered to reduce the total power P to 4 kW or less. Since it did in this way, the element heating temperature by the drive of each inverter 32, 35 of the right heater 6a and the central heater 7a mounted on the same circuit board 30 will not become abnormal, and the switching element of each inverter 32, 35 Damage can be prevented. Accordingly, the number of circuit boards can be reduced by one as compared with the prior art, so that the assembly process of the cooker 1 can be reduced, the cost can be reduced, and the cooker 1 can be downsized.

  In addition, in this Embodiment, although demonstrated using the heating cooker provided with three heating openings on the top plate, you may apply to the heating cooker provided with four heating openings. That is, drive circuits (converters, inverters, inverter drive circuits, control units, etc.) of two heating sources out of four heating sources (heating coils) are mounted on one circuit board, and the electric power of the two heating sources is When the total P exceeds 4 kw, the power with the lower priority of use is lowered so that the total power P becomes 4 kw or less.

  Also in the cooking device configured in this way, the element heat generation temperature due to the driving of the inverters 32 and 35 does not become abnormal as described above, and the switching element of each inverter can be prevented from being damaged. Thereby, since one circuit board can be reduced compared with the past, it is possible to reduce the assembly process of the cooker 1 and to reduce the cost, and the cooker 1 can be downsized.

  DESCRIPTION OF SYMBOLS 1 Heating cooker, 2 housing | casing, 3 top plate, 4 frames, 5 left heating port, 6 right heating port, 7 center heating port, 8 grill, 9 upper surface operation part, 10a left heating power display part, 10b right heating power display Part, 10c central thermal power display part, 11a left liquid crystal display part, 11b right liquid crystal display part, 11c central liquid crystal display part, 12 front operation part, 5a left heater, 6a right heater, 7a central heater, 8a grill heater, 20, 30 40, circuit board, 21, 31, 34 converter, 22, 32, 35 inverter, 23, 33, 36 inverter drive circuit, 24 first control unit, 37 second control unit, 41 heater energization circuit, 42 third control unit 50 Main control unit.

Claims (1)

A plurality of heating coils arranged opposite to the back surface of the top plate on which the cooking container is placed;
A plurality of inverters that convert a DC voltage into an AC voltage and supply a high-frequency current to each of the plurality of heating coils;
The priority of use of at least two heating coils among the plurality of heating coils is set in accordance with the cooking mode, and the total power set for the two heating coils exceeds a preset first maximum power usage. A power limiter that lowers the power of the heating coil with a lower priority of use so that the power is less than or equal to the first maximum power usage .
In a heating cooker in which at least two inverters for supplying a high-frequency current to the two heating coils are mounted on the same circuit board ,
The power limiting unit is configured such that the total power obtained by adding the set power of the other heating means to the set power of the two heating coils is a preset second maximum used power (second maximum used power> first Of the two heating coils, the power of the heating coil having a lower priority of use is reduced so that the set power of the two heating coils is equal to or lower than the first maximum power consumption. A heating cooker characterized by lowering the power of the heating means having a lower use priority among all the heating means including the two heating coils so that the total power becomes equal to or less than the second maximum power consumption .

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