JP2008311001A - Induction heating cooking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an induction heating cooking device which is controlled not to exceed a predetermined rated power for user's convenience when simultaneous cooking is carried out on a plurality of heating portions. <P>SOLUTION: The induction heating cooking device includes the top plate disposed on the upper surface of a main body; a plurality of heating coils to heat a metal pan put on the top plate; an inverter to supply an electric power to the heating coil; a grill portion having a heater; and a grill power supply to supply an electric power to the grill portion, wherein the electric power is supplied to the heating coil, to which an electric power is supplied earlier, and the heater of the grill portion in response to the set electric power when an output request to the heater of the grill portion is later than that to any of the plurality of heating coils. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an induction heating cooker including a plurality of heating units.

  In recent years, the demand for induction heating cookers has increased. The induction heating unit of the induction heating cooker has high thermal efficiency, can obtain a thermal power higher than a gas stove, does not emit a flame, has a function such as a timer forgetting to turn it off, is safe, and the top surface is flat and can be cleaned. Demand for induction heating cookers that combine grill parts for grilling fish, etc. and induction heating parts with two or more heating coils for heating pans, etc., as an alternative to gas tables, as a substitute for gas tables Is growing.

  In such a conventional induction heating cooker, it is desirable in terms of cooking performance that each heating part (grill part and induction heating part) can stably obtain as high output as possible, but the power supply situation (power capacity, Due to restrictions on wiring capacity, types of outlets, etc.) and legal restrictions, the product has a range in which the maximum total power of the entire device falls within a predetermined range. For this reason, an induction heating unit with two heating coils provided on the left and right sides on the front side of the top plate, a heating unit with a radial heater (electric heater) provided on the rear side of the center of the top plate, and a pull-out unit provided in front of the main body When the heating part by the electric heater that heats the grill part is provided and the heating part by the electric heater of the radiant heater or the grill part is in operation, the total power of the apparatus−electric heater heating power = output of the induction heating part (power) The output that can be assigned to the induction heating unit is obtained, the total power of the device is kept within a predetermined value, and the output is set within the range of power consumption allowed by the induction heating unit within the predetermined range of the total power of the device. It is possible to do. Therefore, the induction heating unit can set the output in a wide range in the range of 0 to 100% with respect to the permissible range, and can be cooked at a high output in a short time during cooking. The cooking finish by the output with high heat exchange efficiency, which is a feature of heating, can be realized (see, for example, Patent Document 1).

JP 2003-347026 A

  However, in the above-described conventional technology, when a user tries to perform a plurality of cooking using a plurality of heating units, the grill unit may not be used depending on the combination of the electric power.

  For this reason, for example, if you cook fish on the grill after the cooking of the heating part of the top plate part, it will take a long time until all cooking is finished, the cooked food will cool down and the taste will be noticeable It will be lost.

  On busy mornings, the usage rate is very high, such as using all the heating parts including the grilled fish to carry dishes to the table at once and making lunch boxes. Furthermore, it is necessary to be able to prepare many dishes at one time for dinner so that the whole family can surround the table. Thus, having a heating part which cannot be used even though it has a plurality of heating parts has a problem that it gives a user a significant inconvenience during cooking and causes pain.

  In recent years, so-called all-metal induction heating cookers that support induction heating of nonmagnetic pots (aluminum pots, copper pots, etc.) have also appeared, but when performing induction heating cooking of nonmagnetic pots Since the electric power larger than the induction heating of the magnetic pot is required, the above-mentioned problem is more likely to occur.

  An object of the present invention is an induction heating cooker provided with a plurality of induction heating units having a heating coil corresponding to induction heating of a nonmagnetic pan and a grill unit having a heating element such as a sheathed heater as heating means. It is to realize an induction heating cooker that can use many heating units in parallel.

  In order to solve the above problems, an induction heating cooker according to the present invention includes a top plate provided on the upper surface of a main body, a plurality of heating coils for heating a metal pan placed on the top plate, and the heating In an induction heating cooker having an inverter that supplies electric power to a coil, a grill unit having heating means, and a grill power supply unit that supplies electric power to the grill unit, there is an output request to the heating unit of the grill unit. When the output request is later than one of the plurality of heating coils, power is supplied to the heating unit of the grill unit according to the heating coil to which power has been supplied first and the set power.

  According to the present invention, in an induction heating cooker including at least one induction heating unit and a grill unit corresponding to induction heating of a non-magnetic material pan, many heating units can be used in parallel, and the user can cook It can be cooked comfortably without inconvenience at times, and is very convenient.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view showing a state where an induction cooking device according to an embodiment of the present invention is incorporated in a system kitchen. In FIG. 1, a main body 1 of the induction heating cooker is provided under a top plate 2. The top plate 2 is made of crystallized glass having high heat resistance. A cooking utensil such as a cooking pan or the like to be heated is placed on the top plate 2.

  The top plate frame 3 covers the periphery of the top plate 2. A sealing material (not shown) is filled between the top plate 2 and fixed around the top plate 2. Even if liquid spills on the top plate 2 due to the sealing material, it has a watertight structure that prevents water from leaking inside the main body 1.

  The top plate frame 3 is also fixed to the main body 1. When attaching the main body 1 to the system kitchen 10, the main body 1 is suspended from the top plate frame 3 and installed.

  An intake portion 1 a that opens in the rear frame portion of the top plate frame 3 communicates with an intake / exhaust passage provided in the rear portion of the main body 1 to cool a control unit (not shown) and the heating coil 6 in the main body 1. Inhale air.

  As with the intake section 1a, the exhaust section 1b that opens in the rear frame section of the top plate frame 3 exhausts air that has cooled the control section unit (not shown), the heating coil 6, and the like, and exhaust gas from the grill section 5. To do.

  The plurality of pan position display units 4 provided on the top surface of the top plate 2 are display units provided at positions directly above a heating coil 6 (not shown) disposed under the top plate 2.

  The plurality of heating coils 6 are provided substantially horizontally below the top plate 2 and above the main body 1. The heating coil 6a is on the front left side that is from the front surface of the top plate 2, and the heating coil 6b is on the front right side that is from the front surface of the top plate 2, and the top plate 2 is in the back between the heating coil 6a and the heating coil 6b. A heating coil 6c is provided at the center rear side. A cooking pan or the like placed on the top plate 2 is induction-heated. At least one of the plurality of heating coils 6 corresponds to induction heating of a non-magnetic pot (aluminum pan, copper pan, etc.).

  The pan position display part 4a is provided corresponding to the heating coil 6a arranged on the left side before the top plate 2, and the pan position display part 4b is provided corresponding to the heating coil 6b arranged on the right side near the top plate 2, The pan position display part 4c is provided corresponding to the heating coil 6c arranged at the center rear side of the top plate 2.

  The left and right heating coils 6a and 6b on the front side of the top plate 2 are for cooking that requires a relatively large output such as fried foods and fried foods. In this embodiment, each has a heating output (thermal power) with a maximum power consumption of 3.0 kW.

  Moreover, the heating coil 6c arranged at the center rear side of the top plate 2 does not require much work during cooking such as heat insulation, stewed cooking, and rice cooking, and is compared with the heating coils 6a and 6b on the near side. It is for cooking with low target output. In the present embodiment, the heating coil 6c has a heating output (thermal power) with a maximum power consumption of 1.6 kW.

  In the present embodiment, the heating coils 6a and 6b on the front left and right sides of the top plate 2 have a diameter of about 200 mm so that a pot having a diameter of about 200 mm, which is often used for cooking pots, can be efficiently heated. And the pan position display part 4a, 4b provided in the upper surface of the top plate 2 just above the heating coils 6a, 6b is a display of substantially the same size as the diameter of the heating coils 6a, 6b. In this embodiment, it is assumed that the heating coils 6a and 6b correspond to induction heating of a nonmagnetic pan.

  Further, the heating coil 6c on the rear side of the center of the top plate 2 has a diameter of about 140 mm and is sized so that a small cooking pot can be efficiently heated. And the pan position display part 4c provided in the upper surface of the top plate 2 just above the heating coil 6c is a display of substantially the same size as the diameter of the heating coil 6c.

  In addition, in the present Example, the size of the induction heating cooker main body 1 is matched with the opening size of the mounting hole provided in the counter top of the system kitchen 10 in which the main body 1 is incorporated. The dimensions of the opening are 560 mm in width and 460 mm in depth in JIS.

  The top plate 2 has a width of about 600 mm and a depth of about 400 mm according to the opening size of the mounting hole. Within this range, the heating coils 6a and 6b having a diameter of 200 mm are spaced apart from each other on the near side. Was disposed 100 mm apart, and a heating coil 6c having a diameter of 140 mm was disposed on the rear side of the center.

  The grill portion 5 is provided below the heating coil 6 on the left side or the right side (left side in this embodiment) in the main body 1. The grill portion 5 is a rectangular box and has heating means for heating an object to be heated. In this embodiment, this heating means is a sheathed heater (not shown) having a heating output of 1.2 kW. Furthermore, the grill part 5 includes a door 5a having a handle 5b, and a tray (not shown) that can be taken in and out from the front surface of the main body 1 together with the door 5a.

  A net (not shown) on which the object to be heated is placed is placed on the saucer for cooking. The grill unit 5 performs cooking on the grill by placing a cooked object such as fish, pizza, or gratin on the net. When cooking in the grill unit 5, odors and smoke are generated in the grill unit 5. In order to prevent them from being exhausted indoors from the exhaust part 1b and polluting the indoor air, a mechanism for purifying exhaust from the grill part 5 with a catalyst may be provided. Since the catalyst requires heating, a 0.3 kW heater (not shown) is incorporated. Therefore, when cooking is performed in the grill portion 5 provided with a catalyst, the power consumption is 1.5 kW in total.

  The panel operation unit 7 is provided on the right front surface of the main body 1, which is a side position of the grill unit 5. As shown in FIG. 2, the power supply is turned on / off switch 7a for turning on / off the induction heating cooker and the turn / start key 7b for turning on / off a sheathed heater which is a heating means of the grill section 5. The panel display unit 7c displays the contents operated by the panel operation unit 7 in an easy-to-understand manner for the user.

  The upper surface operation unit 8 is provided in the front frame portion of the plate frame 3 provided in front of the top plate 2. In this embodiment, it is provided on the front frame portion of the plate frame 3, but it may be provided on the top plate 2.

  The upper surface operation unit 8 shown in FIG. 3 includes upper surface operation units 8a, 8b, and 8c corresponding to the heating coils 6a, 6b, and 6c, respectively. As shown in FIG. 4, the upper surface operation units 8a, 8b, and 8c have a cut / start key 401 that is pressed when energizing the respective heating coils 6a, 6b, and 6c and the respective heating coils 6a, 6b, and 6c. Set key 402 that is pressed when setting (selecting) output (output), timer value, and automatic cooking, timer key 403 that is pressed when setting the timer time of each heating coil 6a, 6b, and 6c, and each heating A menu key 404 to be pressed when setting automatic cooking of the coils 6a, 6b, 6c is provided.

  As shown in FIG. 5, the setting key 402 can set stepwise outputs for the respective heating coils 6a, 6b, 6c. In FIG. 5, the maximum output of the heating coils 6a and 6b is 3.0 kW. However, even when the same heating coils 6a and 6b are used, the maximum output varies depending on the material to be heated. When the maximum output changes between the pan and the cooking pan made of a nonmagnetic material, a stepwise output may be set according to each maximum output.

  Although not shown, when the timer key 403 is pressed, a setting request for timer control is issued to the control unit 713, and the set time can be set as a stepwise timer value.

  When the menu key 404 is pressed, the automatic cooking setting process starts. Then, by operating the setting key 402, the four types of automatic cooking functions shown in FIG. 6 are basically provided, and these are displayed and can be selected.

  In the automatic cooking function, a program executed by controlling the temperature of the cooking pan, which is an object to be heated, is stored in the control unit, and in the case of the present embodiment, it is heat insulation, rice cooking, fried food, and kettle. In FIG. 6, the heating coil 6 c provided at the center rear side of the top plate 2 automatically heats and cooks rice in relation to the set maximum output (1.6 kW) and the maximum output required by automatic cooking. However, the heating coil 6c can be set to be stewed. The heating coils 6a and 6b provided on the front left and right sides of the top plate 2 that have larger set maximum power consumption than the heating coil 6c have a maximum power consumption of 3.0 kW when heating iron and stainless steel, respectively. Since it is possible to output, any of the automatic cooking menus (heat retention, stew, rice cooking, fried food, kettle) listed in the present embodiment can be set for any automatic cooking because the set maximum output is low.

  For example, when the automatic cooking menu is kept warm, the heating coil 6 corresponding to the input setting key 402 is set to a maximum output of 0.5 kW during the automatic cooking menu.

  Similarly, when another automatic cooking menu is set, the maximum output is set to 1.1 kW for cooking rice, the maximum output to 1.8 kW for deep-fried food, and the maximum output to 2 kW for hot water.

  The heating coil 6 in which the automatic setting menu is set detects the temperature of the cooking pan with a temperature detector 711 described later, adjusts the output according to the temperature, and cooks (heats) according to the set automatic cooking control program. Process).

  The automatic cooking of the stew in the heating coil 6c may be smaller than the maximum output required for automatic cooking of cooked rice. Stewed cooking requires an output that heats to the boiling temperature. However, once the object to be heated boils, the output for maintaining the boiling temperature is unnecessary thereafter. Although it is affected by the size and material of the pan, an output that is less than the output required to heat the food in the pan to the boiling temperature is sufficient.

  The relationship between the automatic cooking and the heating coil 6 has been described so far. The heating coil 6c whose set maximum power consumption is smaller than those of the other heating coils 6a and 6b is provided in the back of the top plate 2 and is inhaled. It is in a location close to the part 1a and the exhaust part 1b. For this reason, when trying to cook rice in a pan, the flying (foam) scatters from the lid, so there is a possibility that the flying may infiltrate into the main body particularly from the intake portion 1a.

  Further, if automatic cooking of rice is not performed, even if heat retention or stew is set in other automatic cooking performed by the heating coil 6c, only electric power of less than 1.1 kW is constrained by the heating coil 6c, and the other heating coils 6a. , 6b and the grill part 5 increase in power, so the heating coil 6c may not set the rice cooking function by automatic cooking.

  As shown in FIG. 3, the upper surface display unit 9 is provided on the front side of the top plate 2 and at a position corresponding to the upper surface operation unit 8 of each heating coil. The set value of the output operated by the upper surface operation unit 8, the contents of the automatic cooking menu, the cooking timer time, and the like are displayed by the user near the upper surface operation unit 8 in an easy-to-understand manner.

  Note that the upper surface operation units 8a, 8b, and 8c and the upper surface display units 9a, 9b, and 9c are directly in front of the heating coils 6a, 6b, and 6c in order to make the correspondence relationship with the heating coils 6a, 6b, and 6c easy to understand. The side top plate 2 was provided in a straight line on the side.

  FIG. 7 is a circuit block diagram of the induction heating cooker. In FIG. 7, AC 701 of a commercial power source input to the induction heating cooker is a drive circuit that controls the output (electric power) of the sheathed heater 702 that is the heating means of the grill portion 5 and the heating coils 6a, 6b, and 6c. It is supplied to the inverter circuits 703, 704, and 705. The on / off circuit 706 supplies power by controlling on / off of the sheathed heater 702 that is a heating means of the grill portion 5.

  The upper surface operation circuit unit 707 is connected to the upper surface operation unit 8 and converts the input information into a signal and transmits the signal to the control unit 713. The upper surface display circuit unit 708 displays the display signal from the control unit 713 on the upper surface display unit 9. The panel operation circuit unit 709 changes the input at the panel operation unit 7 into a signal to be sent to the control unit 713. The panel display circuit unit 710 displays the output of the control unit 713 on the panel display unit.

  The temperature detector 711 is provided below the top plate 2, and detects the temperature of the cooking pan heated by the respective heating coils 6 a, 6 b, 6 c via the top plate 2. At the time of automatic cooking by the set automatic cooking menu, the output of the heating coil is adjusted based on the temperature information detected by the temperature detector 711 to control the pan at a predetermined temperature. The notification unit 712 notifies the user with a buzzer sound or the like based on the output of the control unit 713.

  The control unit 713 is a control unit configured with a microcomputer. The control unit 713 inputs operation signals from the upper surface operation circuit unit 707 and the panel operation circuit unit 711 and an output signal from the temperature detector 711, and outputs display signals to the upper surface display circuit unit 708 and the panel display circuit unit 710. Output. Control signals are output to an on / off circuit 706 for turning on / off the sheathed heater 702 that is the heating means of the grill section 5 and inverter circuits 703, 704, 705 for adjusting the outputs of the heating coils 6a, 6b, 6c in a plurality of stages. .

  Next, details of the control of the heating coil 6 described above will be described. FIG. 12 is a specific circuit diagram of the heating coils 6a, 6b, 6c and inverter circuits 703, 704, 705 shown in FIG. Since the three heating coils 6 are the same, only one will be described.

  The inverter circuit 703 will be described. The alternating current supplied from the alternating current power source 117 is converted into direct current by the rectifying means 102 and connected to a switching unit constituted by a series body of the switching elements 103 and 105. Diodes 104 and 106 are connected in antiparallel to switching elements 103 and 105, respectively, and a resonance circuit section formed of heating coil 13 and resonance capacitor 107 is connected between the connection point of switching elements 103 and 105 and the reference point of the DC voltage. Is done. Snubber capacitors 108 and 109 are connected to the switching elements 103 and 105, respectively.

  By switching on and off the switching elements 103 and 105 exclusively at a high frequency, a high-frequency resonance current is supplied to a resonance circuit unit composed of the heating coil 101 and the resonance capacitor 107, and a load disposed in the vicinity of the heating coil 101 is heated.

  The control unit 110 inputs a target power level instruction to be applied to the load from the control unit 713 (FIG. 7), and controls the switching units 103 and 105 so that the output power of the inverter becomes a target value.

  The input current conversion unit 112 converts the output signal of the detection unit 111 that detects the current input from the AC power source 117 into an appropriate level and outputs the converted signal to the inverter control unit 110.

  The input voltage detection means 113 detects the voltage of the AC power supply 117, converts it to an appropriate level, and outputs it to the control means 110.

  The inverter current detection means 115 converts the output signal of the detection means 114 for detecting the current flowing through the resonance circuit section to an appropriate level and outputs it to the inverter control section 110.

  Inverter control unit 110 receives these signals, calculates inverter power that is input to the load, determines the state of the load, suitability for heating, etc., and exclusively controls on / off of switching elements 103 and 105. The signal is converted to an appropriate drive level for the switching elements 103 and 105 by the level converter 116, and the switching elements 103 and 105 are driven. Further, the inverter control unit 110 outputs these states to the control unit 713.

  Next, the operation according to the above configuration will be described. For example, the case where a user cooks with the heating coil 6a on the left side before the top plate 2 will be described.

  First, when the metal pan containing the food to be cooked is placed at the center of the pan position display portion 4a on the heating coil 6a and the power-off / on switch 7a of the panel operation unit 7 is turned on, the induction heating cooker Operation starts.

  Next, a scale for increasing or decreasing the stepwise thermal power (output) shown in FIG. 5 in accordance with the numerical value and / or the required thermal power in accordance with the output request with the setting key 402 for setting the output of the heating coil 6a of the upper surface operation unit 8a. For example, the images are sequentially displayed on the upper surface display portion 9a.

  The requested thermal power displayed by the user's operation is set by the control unit 713 as a set output that is confirmed when left for several seconds in the display state.

  Next, when the control unit 713 detects an input of heating start from the cut / start key 401 of the upper surface operation unit 8a, power is supplied from the control unit 713 to the inverter circuit 703 so that a set output is obtained. To start.

  The inverter control unit 110 detects whether the metal pan is a heatable pan and the material is magnetic or non-magnetic based on the detection results of the input current conversion unit 112 and the inverter current detection unit 115. The inverter control unit 110 switches the resonance capacitor 107 according to the material of the metal pan so as to heat at a resonance frequency according to the material (a detailed circuit is not shown), and drives the switching elements 103 and 105.

  When the user's manual cooking is completed, a cut input is made from the cut / start key 401 of the upper surface operation unit 8a. When the control unit 713 receives this heating cut request, the heating of the heating coil 6a is stopped. If there is no other operation after using the heating coil 6a, the power is turned off by turning off the power on / off switch 7a of the panel operation unit 7.

  In the case of setting the cooking timer, the controller 713 enters a timer setting input waiting state by the input of the timer key 403 of the upper surface operation unit 8 corresponding to the corresponding heating coil 6 during cooking.

  When entering the timer setting input waiting state, the corresponding upper surface display unit 9 is switched to the timer value input screen. When a timer value is input by the setting key 402, the timer value according to the input is displayed on the upper surface display unit 9 in order.

  In other words, if there is no input of a new timer value from the setting key 402 without changing the display content, the passage of several seconds is monitored. After the elapse of the predetermined time, the control unit 713 sounds a buzzer from the notification unit 412, and when no new timer value is input, the control unit 713 sets the final input timer value as a determined value. And the control part 713 starts the timer for the set time. The control unit 713 issues a command to the inverter circuit to stop the energization of the corresponding heating coil 6 when the set time is counted by the cooking timer, and the heating of the heating coil 6 is stopped. To notify the end of the set time by sounding a buzzer.

  When grilling fish or the like on the grill unit 5, the user puts an object to be heated on the net, stores the net in the grill unit 5, and then turns on the power off / on switch 7 a of the panel operation unit 7. By the power-on operation of the power-off / on switch 7a, the grill portion 5 is also in a heating preparation state together with other heating means.

  Next, when the off / start key 7b of the panel operation unit 7 is pressed, it is determined that there is a heating request to the grill unit 5, and the control unit 713 energizes the sheath heater 702 of the grill unit 5 to the on / off circuit 706. Then, heating of the object to be heated placed on the net is started. Although not shown, a temperature detector 711 is provided in the heating chamber of the grill unit 5, and the detection result of the temperature sensor is received by the control unit 713, and the heating state of the object to be heated is determined to determine the heating state in the heating chamber. The grill part 5 is cooked while adjusting the temperature.

  The temperature adjustment process varies depending on the object to be heated in the heating chamber. Although not shown in FIG. 2, for example, in the case of grilled fish, the amount of heating is changed according to the progress of the grilled fish that is to be heated. When it is detected that the temperature change in the chamber has decreased, the control unit 713 stops energizing the sheathed heater 702. When cooking is finished, the user turns off the power by pressing the power off / on switch 7a when there is no other cooking. As described above, the grill unit 5 has a range of required outputs depending on the cooking target. Therefore, it is necessary to secure the set maximum output in advance. In the present embodiment, as described below, the set maximum output of the grill portion 5 is set to 1.5 kW.

  Next, automatic cooking by the heating coil 6 will be described. For example, when fried food is cooked with the heating coil 6b, a tempura pan filled with oil is placed at the center of the pan position display section 4b on the heating coil 6b, and the user turns on / off the switch 7a of the panel operation section 7 by the user. When turned on, the heating coil 6b is ready for heating.

  Next, the automatic cooking mode is set by inputting the menu key 404 of the upper surface operation unit 8b, and the control unit 713 sequentially displays the automatic cooking menu on the display unit 9b by inputting the setting key 402 of the upper surface operation unit 8b.

  If the fried food display state of the automatic cooking menu is maintained for several seconds, in other words, if the fried food cooking is maintained for a predetermined time with the operation of the setting key 402, the control unit 713 sets the automatic cooking menu. To do.

  Next, when a set start request for fried food cooking is input to the control unit 713 by pressing the cut / start key 401 of the upper surface operation unit 8b, the control unit 713 matches the preheat temperature set separately. Thus, the inverter circuit 704 of the heating coil 6b is requested to be preheated, and power is supplied from the inverter circuit 704, so that the heating coil 6b starts preheating.

  When the control unit 713 determines that the oil temperature has reached the set temperature based on the temperature information from the temperature detector 711, the control unit 713 makes a notification request to the notification unit 712 and uses a buzzer that indicates that preheating has ended. Inform the person.

  During fried food cooking, the controller 713 instructs the inverter circuit 704 to maintain a predetermined oil temperature based on temperature information from the temperature detector 711 as cooking progresses, and adjusts the power to the heating coil 6b. To do.

  When the fried food cooking is finished, the cut / start key 401 of the upper surface operation unit 8b is pressed by the user's operation, and the control unit 713 stops heating by this input. If cooking is not being performed, the user presses the power off / on switch 7a of the panel operation unit 7 to turn off the power.

  Next, control for preventing the power consumption of the entire induction heating cooker from exceeding a predetermined rated power will be described with reference to FIG. 8, FIG. 9, and FIG. FIG. 8 is a diagram illustrating an example of output setting of each heating unit, FIG. 9 is a flowchart illustrating control for preventing the power consumption of the entire apparatus from exceeding a predetermined rated power when the setting key is operated, and FIG. 10 is grill cooking It is a flowchart explaining the control which makes the power consumption of the whole apparatus not exceed predetermined rated power at the time of a start. In FIG. 8, the sheathed heater is a heating means for the grill portion 5.

  Example 1 in FIG. 8 is a case where cooking is started with the heating coil 6c set to the maximum output of 1.6 kW that can be set by the setting key 402 of the upper surface operation unit 8c.

  When the heating coil 6b is set to the maximum output of 3.0 kW that can be set by the setting key 402 of the upper surface operation unit 8b after the heating coil 6c starts heating, the heating coil 6c has 1.6 kW and the heating coil 6b has The total output with the required output of 3.0 kW is 4.6 kW. This is within 5.8 kW which is the rated output in this embodiment. Therefore, the control unit 713 accepts the output request of the heating coil 6b. And the control part 713 displays the display corresponding to 3.0 kW on the upper surface display part 9b, requests | requires the electric power supply to the heating coil 6b from the inverter circuit 704, and a user starts cooking.

  Further, if the output setting is set to exceed 1.1 kW in order to cook with the heating coil 6a, the controller 713 controls the power consumption of the entire device so that it does not exceed the predetermined rated power of 5.8 kW. The operation of the setting key 402 for setting the output of the coil 6a does not accept an output request exceeding 1.1 kW, and does not display an output larger than 1.1 kW on the upper surface display portion 9a. Since the heating powers that can be set for each heating coil 6 are set discretely, in this case, 1.2 kW is not set for the rated power of 5.8 kW.

  Therefore, the output of the heating coil 6a can only be set up to 1.1 kW. That is, as shown in FIG. 9, when the set output is larger than the value obtained by subtracting the total output currently being cooked from the predetermined rated power 5.8 kW in step 901, the control unit 713 outputs the set output in step 902. Do not accept, do not display.

  If the set output is not larger than the value obtained by subtracting the total output currently being cooked from the predetermined rated power 5.8 kW in step 901, the set output is accepted in step 903, and 1.1 kW is given to the user. Guidance is made so that the setting is not exceeded.

  As described above, when the cooking is simultaneously performed by the three heating coils 6a, 6b, and 6c on the top plate 2, the two heating coils 6 having different set maximum heating power outputs can be cooked at the settable maximum output. This is possible, and the remaining one heating coil 6 can be cooked with adjusted output.

  Therefore, in the case of the present embodiment, the two heating coils having different set maximum heating power outputs can be cooked with the maximum settable output, and the remaining one heating coil can be cooked with the adjusted output. It is possible to cook comfortably without feeling inconvenience due to difficulty in use due to the limitation of output during cooking, and it is very convenient to use.

  Example 2 in FIG. 8 starts cooking rice for automatic cooking (set maximum output 1.1 kW) with the heating coil 6c, and then sets the maximum output 3.0 kW that can be set with the heating coil 6b and starts cooking. Then, it is a case where the fried food for automatic cooking (set maximum output 1.8 kW) is to be set by the heating coil 6a. Since the power consumption of the entire device at this time is 5.9 kW and exceeds a predetermined rated power of 5.8 kW, the control unit 713 performs control so that an automatic cooking function for fried food in the heating coil 6a cannot be set.

  In this way, the output during cooking and the output of cooking to be set in the future will be the output set at that time if it is a manual output setting, and in the case of automatic cooking, the output may change midway due to the automatic cooking function. When controlled, the calculation is performed with the maximum output (set maximum output) in the automatic cooking function. By doing so, it is possible to eliminate exceeding a predetermined rated power. In this case, after the set output of the heating coil 6b is manually lowered (for example, when 3.0 kW is lowered to 2.5 kW), the total output of the heating coil 6c and the heating coil 6b is 3.6 kW, so the heating coil 6a. Even if the deep-fried food cooking menu is selected, it becomes 5.4 kW. In this case, the control unit 713 accepts the setting request for the deep-fried food cooking menu of the heating coil 6a.

  In Example 3 of FIG. 8, the heating coil 6a performs automatic cooking water heating (set maximum output 2 kW), the heating coil 6b performs automatic cooking fried food (set maximum output 1.8 kW), and the heating coil 6c cooks rice ( This is an example in which a set maximum output of 1.1 kW) is performed. The power consumption of the entire device at this time is a maximum of 4.9 kW and does not exceed a predetermined rated power of 5.8 kW.

  As described above, automatic cooking can be performed simultaneously on the top plate 2 by the three heating coils 6a, 6b, and 6c, so that the usability is very good.

  The display of the upper surface display unit 9 when setting the last automatic cooking in any of the automatic cooking settings will be described. When the menu key 404 of the corresponding heating coil 6 is pressed and the automatic cooking mode is set, the preset maximum output is registered in advance in each automatic cooking menu, so that the control unit 713 can be set in the upper surface display unit 9. Display automatic menus. In the case of Example 3, when the automatic cooking setting in the heating coil 6b is the last, the automatic menus for heat retention, rice cooking, deep-fried food, and kettle are displayed.

  Example 4 in FIG. 8 is an example in the case of cooking fish or the like by the heating means of the grill unit 5, and grilling fish in the grill unit 5 during automatic cooking (setting maximum output 1.1 kW) with the heating coil 6 a. It is a case where cooking such as is started.

  When the grill unit 5 is cooked, when the cut / start key 7b of the panel operation unit 7 is pressed and the output request of the grill unit 5 is sent to the control unit 713, as shown in FIG. During cooking, step 102 is executed because cooking is in progress.

  Since the heating coil 6a is under automatic cooking (rice cooking), step 103 is executed. Since the output of the heating coil 6a does not exceed 1.6 kW, step 104 is executed next. Since (predetermined rated power 5.8 kW)-(total output during cooking 1.1 kW) is 4.7 kW, which is 1.5 kW or more of the power consumption of the grill unit 5, the control unit 713 In step 105 of 5, a heating means off / start key 7b is received.

  Next, when the output request of the heating coil 6b is made to the control unit 713, if the required output is 2.4 kW, the total maximum power consumption of the device is 5.0 kW, so the value is smaller than the rated power 5.8 kW. It is. Thereby, the control unit 713 receives the output request of the heating coil 6b, and controls the inverter circuit 704 to output the required output of 2.4 kW.

  Further, when the control unit 713 detects an input of heating start from the off / start key 401 of the upper surface operation unit 8c corresponding to the heating coil 6c, the total maximum consumption output of the device has already become 5.0 kW. No. 713 is performed only up to display of 0.8 kW as an output on the upper surface display portion 9c.

  Therefore, when the output request for the heating coil 6c is set to 0.8 kW, the control unit 713 controls the inverter circuit 705 to output 0.8 kW. The power consumption of the entire device at this time is 5.8 kW, and does not exceed the predetermined rated power of 5.8 kW.

  In this case, since the set maximum output is preset for the grill part 5 regardless of what is to be cooked, it is necessary to ensure a constant output unlike the other heating coils 6. . In Example 4, since the required output necessary for heating the grill unit 5 was satisfied with respect to the rated power, the control unit 713 could accept the output request for the grill unit 5.

  In this way, cooking can be performed simultaneously with the three heating coils 6 on the top plate 2 and the grill portion 5, so that the usability is very good.

  In Example 5 of FIG. 8, when the heating coil 6a is heated at the maximum settable output of 3.0 kW and the heating coil 6b is heating at the output of 2.4 kW, cooking such as grilled fish is performed at the grill section 5. Is required.

  When the user presses the cut / start key 7 b of the panel operation unit 7 to start cooking at the grill unit 5, an output request for the grill unit 5 is input to the control unit 713. The control unit 713 executes processing as shown in FIG. 10 and determines whether or not this output request is possible.

  First, the heating coil 6a is cooking at the maximum output of 3.0 kW (step 101), but the heating coil 6a is not cooking automatically (step 102), so step 106 is executed.

  Since the output 3.0 kW of the heating coil 6a is larger than 1.6 kW, step 107 is executed, and the total of 2. (predetermined rated power 5.8 kW)-(output during cooking (heating coils 6b, 6c) is 2. 4 kW) -1.6 kW becomes 1.8 kW.

  Since this is greater than 1.5 kW, step 108 is executed. In step 108, the output of the heating coil 6a is automatically reduced from 3.0 kW to a specific value of 1.6 kW. The control unit 713 accepts it.

  Next, when there is an output request for the heating coil 6c in the control unit 713, the total maximum power consumption of the device is 5.5 kW. Therefore, even if the control unit 713 operates the setting key 402 corresponding to the heating coil 6c, The upper display unit 9c displays 0.3 kW. When the set heating power for the heating coil 6c is set to 0.3 kW, the control unit 713 controls the inverter circuit 705 to output the required heating power, and the user cooks.

  The total power consumption at this time is 5.8 kW, which does not exceed the predetermined rated power 5.8 kW. The specific value of 1.6 kW is not limited to this value, and may be appropriately selected according to the power supply capacity of the electrical equipment in which the induction heating cooker is installed.

  This specific value (1.6 kW) in the present embodiment is not able to perform frying (set maximum output 1.8 kW) and boiling (set maximum output 2.0 kW) as an automatic cooking menu in the heating coil 6a with limited output. It is a power value.

  However, in the heating coil 6b that can output at least the same maximum output 3.0 kW as that of the heating coil 6a with the magnetic pot, even if power is supplied to the sheathed heater 702 of the grill part 5, the heating coil 6a and 6b are more powerful. Depending on the setting output of the heating coil 6c having a small maximum output, it is preferable that an output capable of executing all automatic cooking menus set in advance in the heating coil 6b can be secured and supplied.

  Specifically, the heating coil 6a whose output is limited is 1.6 kW, and the set maximum output of the sheathed heater 702 of the grill unit 5 is 1.5 kW, and when these are combined, it is 3.1 kW. This has a margin of 2.7 kW with respect to the rated power of 5.8 kW assumed in the present embodiment. This surplus electric power is an output capable of performing boiling water cooking (2.0 kW) that requires the maximum set heating power in the automatic cooking menu preset in the heating coil 6b.

  In this embodiment, for example, when power is supplied to the heating coil 6a, there is an output request to the on / off circuit 706 that is a power supply unit so as to supply power to the sheathed heater 702 of the grill unit 5. However, as a result of restricting the power supply to the heating coil 6a, the heating coil 6b can perform all set automatic cooking (heat insulation, rice cooking, deep-fried food, boiling water), and set maximum output than the heating coils 6a and 6b. Even with a small heating coil 6c, at least one automatic cooking (heat insulation) is possible.

  Thus, by automatically reducing the output of the heating coil 6a to a specific value of 1.6 kW, cooking can be performed at the same time by the three heating coils 6 on the top plate 2 and the grill part 5, so that it is easy to use. Very good.

  Further, when cooking such as grilled fish is started by the heating means of the grill unit 5, the specific heating coil 6 that automatically reduces the output is provided on the left side before the top plate 2 provided on the grill unit 5. Since the heating coil 6a is specified, the user can perform cooking with the specific heating coil 6a in advance so that the cooking finish is not hindered even if the output changes in the middle, so that the usability is very good.

  Also, when cooking such as grilled fish is to be started by the heating means of the grill section 5, even if there is a heating coil whose output is automatically reduced, the equipment is an automatic in which at least one heating coil is set. Since all cooking can be performed, there is little influence on practical usability.

  If the heating coil 6a is automatically cooking in step 102 and the output of the heating coil 6a during the automatic cooking exceeds 1.6 kW in step 103, the heating means off / start key 7b of the grill section 5 is selected in step 109. Was not accepted.

  In other words, if the heating coil 6a is performing automatic cooking performed at a set maximum output exceeding a specific value, priority is given to the automatic cooking and cooking of the grill section 5 is restricted. As described above, when the heating coil 6a is under automatic cooking, the output is not automatically reduced so as not to affect the result of the automatic cooking.

  If (predetermined rated power 5.8 kW)-(total output of heating coils 6b, 6c during cooking)-(output 1.6 kW of heating coil 6a) is 1.5 kW or less in step 107, the grill portion When the heating means 5 is operated, the total power consumption exceeds the predetermined rated power. Therefore, in step 109, the turn / start key 7b of the panel operation unit 7 is not accepted so that the predetermined rated power is not exceeded. I have control.

  Further, when the heating coil 6a is not cooking in step 101, in step 104, when (predetermined rated power 5.8 kW)-(total output of heating coils 6b and 6c during cooking) is 1.5 kW or less, When the heating means of the grill unit 5 is operated, the total power consumption exceeds a predetermined rated power. Therefore, in step 109, the turn / start key 7b of the panel operation unit 7 is not accepted and the predetermined rated power is not exceeded. So that it is controlled.

  In this way, when the user uses the heating unit according to cooking, the grill unit 5 that can be used for cooking grilled fish, pizza, gratin, etc., which many Japanese prefer, can be preferentially used, and further automatic Cooking is also given priority, and by distributing power so that one of the other heating units automatically reduces power, all heating units can be used, and many dishes can be carried to the table at once. .

  Therefore, a plurality of dishes can be cooked in parallel. Furthermore, there is no need to divide cooking into several times. Therefore, the user can cook comfortably without feeling inconvenience during cooking, and is very convenient.

It is an external appearance perspective view of the state which incorporated the induction heating cooking appliance which shows one Example of this invention in the system kitchen. Similarly, it is a detailed view of the panel operation unit. Similarly, it is a top view of an induction heating cooker. Similarly, it is a detailed view of the upper surface operation unit. Similarly, it is a figure explaining the output which can be set. Similarly, it is a figure explaining the automatic cooking which can be set. Similarly, it is a circuit block diagram of an induction heating cooking device. Similarly, it is a figure explaining the output setting example of each heating part. Similarly, it is a flowchart illustrating control for preventing the power consumption of the entire device from exceeding a predetermined rated power when the setting key is operated. Similarly, it is a flowchart illustrating control for preventing the power consumption of the entire apparatus from exceeding a predetermined rated power at the start of grill cooking. Similarly, it is a block diagram of an inverter circuit of an induction heating cooker.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Top plate 5 Grill part 6 Heating coil 702 Seed heater 703,704,705 Inverter circuit 713 Control part

Claims (3)

A top plate provided on the upper surface of the main body;
A plurality of heating coils for heating the metal pan placed on the top plate;
An inverter that supplies power to the heating coil;
A grill having heating means;
In an induction heating cooker having a grill power supply unit that supplies power to the grill unit,
At least one of the plurality of heating coils is a heating coil corresponding to heating of a nonmagnetic metal pan,
When power is supplied to any one of the plurality of heating coils, when power supply is requested to the heating means of the grill portion, the heating coil to which power has been supplied first and the set power An induction heating cooker that supplies electric power to the heating means of the grill unit according to the above. The induction heating cooker according to claim 1,
The set power of the heating coil to which power has been supplied earlier is greater than a specific value, and the power obtained by removing this specific value and the power supplied to other heating coils from the rated power is When it is larger than the set maximum output of the heating means, the induction heating cooker that supplies power to the heating means of the grill part by reducing the power set in the heating coil previously supplied with power to the specific value . The induction heating cooker according to claim 1,
When the heating coil to which power is supplied earlier is a heating coil close to the grill part, and the power supplied to the heating coil close to the grill part exceeds a specific value, the output of the heating coil close to the grill part An induction heating cooker that reduces power to the specific value and supplies power to the heating means of the grill portion.

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