Cooking appliance, control method, and computer program

Abstract

In a cooking appliance, the control of the magnetron and heater is achieved with a simple configuration. [Solution] The heating appliance according to this disclosure comprises a magnetron that irradiates microwaves when energized, a heater that generates heat when energized, and a control unit that controls the energization of the magnetron and the heater. The control unit determines the energization time of the magnetron and the heater based on the anode current value of the magnetron. The heating appliance according to this disclosure also comprises an inverter that supplies power to the magnetron. The inverter acquires the anode current value of the magnetron and outputs the acquired anode current value to the control unit.

Description

Technical Field

[0001] The present technology relates to a heating cooker, a control method, and a computer program.

Background Art

[0002] Conventionally, a heating cooker including a magnetron and a heater has been proposed. For example, the heating cooker described in Patent Document 1 includes a DC power supply circuit including a full-wave rectifier circuit connected to an AC power supply, a heater and a semiconductor switching element connected in series to the DC power supply circuit, an input current detection unit configured to detect an input current from the AC power supply, and an input control unit configured to control the switching element such that a detected current value of the input current detection unit is less than an upper limit value, and an inverter circuit including a resonance circuit and a high-frequency switching element for driving a microwave generator is connected to the DC power supply circuit.

[0003] Further, the heating cooker described in Patent Document 1 includes a voltage detection circuit, and determines an on-duty ratio of the semiconductor switching element that controls power supply to the microwave generator based on a voltage value of the AC power supply detected by the voltage detection circuit.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the heating cooker described in Patent Document 1 requires a voltage detection circuit for controlling the magnetron and the heater.

[0006] The present disclosure has been made in view of such circumstances, and an object thereof is to realize control of a magnetron and a heater in a heating cooker with a simple configuration. [Means for solving the problem]

[0007] The heating appliance according to this disclosure comprises a magnetron that irradiates microwaves when an electric current is applied, a heater that generates heat when an electric current is applied, and a control unit that controls the supply of electric current to the magnetron and the heater, wherein the control unit determines the energizing time of the magnetron and the heater based on the anode current value of the magnetron.

[0008] In this disclosure, the control unit of the cooking appliance determines the energizing time of the magnetron and heater based on the anode current value, such as shortening the energizing time of the magnetron and heater when the current value of the power input to the anode of the magnetron (anode current value) is high, and lengthening the energizing time of the magnetron and heater when the anode current value is low. In other words, the control unit of the cooking appliance can determine the energizing time of the magnetron and heater by a simple configuration that only requires acquiring the anode current value.

[0009] The heating appliance according to this disclosure includes an inverter that supplies power to the magnetron, the inverter acquires the anode current value of the magnetron and outputs the acquired anode current value to the control unit.

[0010] In this disclosure, the magnetron of the cooking appliance is powered by an inverter. The inverter has a function to acquire the current value of the power output to the magnetron. The inverter can acquire the anode current value by setting the current value of the power output to the magnetron as the anode current value of the magnetron, or by multiplying the current value of the power output to the magnetron by a predetermined coefficient. The control unit can determine the energizing time of the magnetron and heater with a simple configuration by determining the energizing time of the magnetron and heater based on the anode current value acquired by the inverter.

[0011] In the heating cooker according to this disclosure, the control unit calculates the power supply output voltage value of the power supply that supplies power to the magnetron and the heater based on the anode current value of the magnetron, and determines the energizing time of the magnetron and the heater based on the calculated power supply output voltage value.

[0012] In this disclosure, the control unit calculates the output voltage value (power supply output voltage value) of the power supply that supplies power to the magnetron and heater of the cooking appliance, i.e., the household power supply to which the cooking appliance is connected, based on the anode current value. The power supply output voltage value may fluctuate, and if the power supply output voltage value fluctuates, the anode current value will also fluctuate. By determining the energizing time of the magnetron and heater based on the power supply output voltage value calculated based on the anode current value, the energizing time of the magnetron and heater can be determined without the need to provide a circuit to measure the power supply output voltage value.

[0013] In the heating cooker according to this disclosure, the control unit determines the energizing time of the magnetron and the heater to the standard time when the calculated power supply output voltage value is the same as the standard voltage value of household power supply, determines the energizing time of the magnetron and the heater to be shorter than the standard time when the calculated power supply output voltage value is higher than the standard voltage value, and determines the energizing time of the magnetron and the heater to be longer than the standard time when the calculated power supply output voltage value is lower than the standard voltage value.

[0014] In this disclosure, the output voltage value of a household power supply (power supply output voltage value) usually outputs power at a standard voltage value (e.g., 100V). However, household power supplies may supply power at a voltage value higher or lower than the standard voltage value depending on the power transmission conditions, the degree of deterioration of the wiring or outlets, or the power usage conditions within the household. By determining whether the calculated power supply output voltage value is higher or lower than the standard voltage value, it is possible to supply a certain amount of energy to food being heated by a cooking appliance by determining the length of the energizing time of the magnetron and heater.

[0015] In the heating cooker according to this disclosure, the control unit calculates the power supply output voltage value based on the anode current value of the magnetron, the temperature of the magnetron, and the output setting value of the magnetron.

[0016] In this disclosure, the anode current value of the magnetron fluctuates depending on the power supply output voltage value, the magnetron temperature, and the magnetron output setting value (output intensity) specified by the user when using the cooking appliance. By using the magnetron anode current value, magnetron temperature, and magnetron output setting value, it is possible to calculate a more accurate power supply output voltage value.

[0017] The heating cooker according to this disclosure includes a control unit which determines a first coefficient according to the output setting value of the magnetron, determines a second coefficient according to the temperature of the magnetron, calculates a conversion coefficient by multiplying the first coefficient and the second coefficient, calculates the voltage value of the power supplied to the magnetron based on the anode current value of the magnetron, and calculates the power supply output voltage value by dividing the voltage value of the power supplied to the magnetron by the conversion coefficient.

[0018] In this disclosure, the voltage value of the power supplied to the magnetron is the value obtained by multiplying the power supply output voltage value by a conversion factor. The conversion factor is determined by the magnetron temperature and the magnetron's output setting value. In other words, by dividing the voltage value of the power supplied to the magnetron, which is calculated based on the anode current value, by the conversion factor, it is possible to calculate a more accurate power supply output voltage value.

[0019] The control method relating to this disclosure is a control method for a cooking appliance comprising a magnetron that irradiates microwaves by energizing, a heater that generates heat by energizing, and a control unit that controls the energizing of the magnetron and the heater, wherein the control unit determines the energizing time of the magnetron and the heater based on the anode current value of the magnetron.

[0020] In the present disclosure, the control unit of the heating cooker determines the energization time of the magnetron and the heater based on the anode current value, for example, shortening the energization time of the magnetron and the heater when the current value of power input to the anode of the magnetron (anode current value) is high, and lengthening the energization time of the magnetron and the heater when the anode current value is low. That is, the control unit of the heating cooker can determine the energization time of the magnetron and the heater with a simple configuration that only acquires the anode current value.

[0021] A computer program according to the present disclosure is a computer program executable by a heating cooker including a magnetron that irradiates microwaves when energized, a heater that generates heat when energized, and a control unit that controls energization to the magnetron and the heater, the computer program causing the control unit to execute a process of determining the energization time of the magnetron and the heater based on the anode current value of the magnetron.

[0022] In the present disclosure, the control unit of the heating cooker determines the energization time of the magnetron and the heater based on the anode current value, for example, shortening the energization time of the magnetron and the heater when the current value of power input to the anode of the magnetron (anode current value) is high, and lengthening the energization time of the magnetron and the heater when the anode current value is low. That is, the control unit of the heating cooker can determine the energization time of the magnetron and the heater with a simple configuration that only acquires the anode current value. Effects of the Invention

[0023] In the heating cooker according to one embodiment of the present disclosure, the energization time of the magnetron and the heater can be determined with a simple configuration. Brief Description of the Drawings

[0024] [Figure 1] It is a perspective view of the heating cooker. [Figure 2] It is a schematic right side cross-sectional view of the heating cooker. [Figure 3]It is a schematic front cross-sectional view of the heating cooker. [Figure 4] It is a circuit diagram and a block diagram showing the main configuration of the heating cooker. [Figure 5] It is a flowchart showing an example of processing of the control circuit. [Figure 6] It is an explanatory diagram showing an example of the energization time table. [Mode for Carrying Out the Invention]

[0025] (Embodiment) Hereinafter, embodiments of the present disclosure will be described based on the drawings. In the following description, up, down, front, back, left and right directions indicated by arrows in the drawings are used. For convenience of explanation, the dimensional ratios in the drawings may differ from actual ratios, and each part may be exaggerated or omitted.

[0026] Figure 1 is a perspective view of the heating cooker 1. In the figure, reference numeral 1 denotes a heating cooker, and the heating cooker 1 is configured as, for example, a microwave oven. The heating cooker 1 includes an outer box 11 and a door 12. Figure 2 is a schematic right side cross-sectional view of the heating cooker 1. As shown in Figure 1 and Figure 2, the outer box 11 has a rectangular parallelepiped shape with an open front surface. The door 12 opens and closes the front opening of the outer box 11. A handle 121 and an operation unit 122 are provided on the outer surface of the door 12. As shown in Figure 2, the heating cooker 1 includes an inner box 13 and a partition wall 14. The inner box 13 is housed in the outer box 11. The inner box 13 has a rectangular parallelepiped shape with an open front surface. When the door 12 opens and closes the front opening of the outer box 11, the front opening of the inner box 13 is also opened and closed. The outer box 11, the door 12, and the inner box 13 have heat resistance and microwave reflectivity. For example, the outer box 11 and the inner box 13 are made of metal.

[0027] Figure 3 is a schematic front cross-sectional view of the heating cooker 1. As shown in Figures 2 and 3, a recess is provided in the center of the inner bottom surface of the inner box 13, and the opening of this recess is watertightly closed by a partition wall 14 positioned along the bottom plate of the inner box 13. The partition wall 14 has heat resistance and microwave permeability and is made of, for example, ceramic.

[0028] The area of ​​the inner box 13 above the partition wall 14 is used as the heating chamber 2. The inner top surface of the inner box 13 and the top surface of the partition wall 14 function as the inner top and bottom surfaces of the heating chamber 2. The portions of the left and right inner walls of the inner box 13 above the partition wall 14 function as the left and right inner walls of the heating chamber 2. The inner surface of the door 12 functions as the front inner wall surface of the heating chamber 2. The door 12 comprises, for example, a metal plate (perforated metal) with numerous through-holes and transparent heat-resistant glass covering this metal plate. When the door 12 is closed, the heating chamber 2 can be seen through the door 12.

[0029] The area below the partition wall 14 of the inner box 13 (the recess in the center of the inner bottom surface of the inner box 13) is used as the antenna room 10. The cooking appliance 1 is equipped with an irradiation device 15. The irradiation device 15 is equipped with a rotating antenna 151 and a magnetron 152. The rotating antenna 151 is housed in the antenna chamber 10. The rotating antenna 151 is disc-shaped with both sides facing up and down, and rotates circumferentially driven by a motor (not shown). The magnetron 152 is housed in a space enclosed, for example, by an outer casing 11 and an inner casing 13. The magnetron 152 generates microwaves. The wavelength of the microwaves generated by the magnetron 152 is approximately 12 cm.

[0030] The microwaves generated by the magnetron 152 are guided into the antenna chamber 10 by a waveguide member (not shown). The microwaves guided into the antenna chamber 10 are scattered by the rotating antenna 151. The scattered microwaves pass through the partition wall 14 and are irradiated from below into the internal space of the heating chamber 2. A cooking dish 3 is housed in the heating chamber 2. The cooking dish 3 is heat-resistant and microwave-reflective, and is made of, for example, metal. The cooking dish 3 generates heat when exposed to microwaves. Food 4 (the item to be heated) is placed on the cooking plate 3. The heat emitted by the cooking plate 3 when it receives microwaves cooks the food 4 placed on it. Note that the cooking plate 3 does not necessarily have to be placed inside the heating chamber 2, and the food 4 (the item to be heated) may be placed on the bottom surface of the heating chamber 2.

[0031] The cooking appliance 1 is equipped with a heater 17. The heater 17 comprises, for example, a cylindrical body and a carbonaceous heating element (graphite) housed within the cylindrical body that has two-dimensional isodirectional thermal conductivity in the planar direction. Instead of this heating element, a coiled electric heating wire such as nichrome wire or tungsten wire may be used. The heater 17 is installed on the lower side of the upper surface of the inner box 13 and on the upper side of the cooking plate 3, i.e., at the top of the heating chamber 2, and generates heat when power is supplied, radiating heat from above the food 4. The location where the heater 17 is installed is not limited to the top of the heating chamber 2, but may be installed, for example, on the side or bottom of the heating chamber 2. In addition, multiple heaters may be provided in the heating chamber 2.

[0032] Figure 4 is a circuit diagram and block diagram showing the main components of the heating appliance 1. In Figure 4, solid lines indicate power lines and dashed lines indicate signal lines. The heating appliance 1 comprises a magnetron 152, an inverter 153, a heater 17, a converter 18, a control circuit 19, a temperature sensor 19a, and an operation panel 19b.

[0033] The control circuit 19 is composed of, for example, a microcomputer and includes a control unit 191, a memory unit 192, and an input / output interface 193. The control unit 191 is composed of a CPU or logic circuit (e.g., FPGA). The control unit 191 performs various control and calculation processes by reading and executing a program P and data pre-stored in the memory unit 192. The control unit 191 may be configured to perform multiple processes in parallel using multiple CPUs (multi-CPU) or a multi-core CPU.

[0034] The memory unit 192 of the control circuit 19 is composed of volatile memory elements such as RAM (Random Access Memory) or non-volatile memory elements such as ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable ROM), or flash memory. The memory unit 192 stores a program P for performing various control and calculation processes, and a power-on time table T. Details of the power-on time table T will be described later.

[0035] The input / output interface 193 of the control circuit 19 is connected to the inverter 153, heater 17, temperature sensor 19a, and control panel 19b via signal lines, and transmits and receives signals with each connected component. Details of the information indicated by the signals transmitted and received with each component will be described later.

[0036] The temperature sensor 19a is located near the magnetron 152 and measures the temperature of the magnetron 152, transmitting the data to the control circuit 19. The control panel 19b includes an operating unit 122 and receives input from the user of the cooking appliance 1 regarding the output power setting value (output intensity) of the magnetron 152 during heating and the heating time (standard time), and transmits the input output setting value to the control circuit 19. The output setting value may be input by selecting a value from, for example, 200W, 500W, 600W, or 1000W.

[0037] The cooking appliance 1 is connected to a household power supply (AC power supply) S. The heater 17 is also connected to the household power supply S. In other words, the heater 17 is supplied with AC power supplied from the household power supply S.

[0038] The inverter 153 is connected to a household power supply S via a converter 18, and DC power is supplied to it. That is, the converter 18 and inverter 153 and the heater 17 are connected in parallel. The converter 18 receives AC power supplied from the household power supply S, converts the received AC power to DC power, and outputs it to the inverter 153. The inverter 153 converts the DC power supplied from the converter 18 to AC power and supplies it to the magnetron 152. At this time, the inverter 153 converts the voltage of the input power based on a conversion coefficient received from the control circuit 19, and supplies the converted voltage power to the anode 152a of the magnetron 152. Details of the conversion coefficient will be described later. Note that the inverter 153 may be configured as an integral part of the magnetron 152, or it may be an internal component of the magnetron 152.

[0039] Furthermore, the inverter 153 acquires the current value of the power input to the anode 152a of the magnetron 152 (anode current value). The inverter 153 acquires the current value of the power output to the magnetron 152 as the anode current value. If a current transformer is provided between the inverter 153 and the magnetron 152, the inverter 153 may acquire the anode current value by multiplying the current value of the output power by a predetermined coefficient related to the current transformer. The inverter 153 transmits the acquired anode current value to the control circuit 19.

[0040] The control unit 191 of the control circuit 19 calculates the output voltage value of the household power supply S based on the acquired anode current value, the temperature of the magnetron 152, and the output setting value. Based on the calculated output voltage value, the control unit 191 determines the energizing time for the magnetron 152 and the heater 17. For example, during the determined energizing time, the control unit 191 transmits an energizing signal to the inverter 153 instructing it to supply power to the magnetron 152. The inverter 153 supplies power to the magnetron 152 while it is receiving the energizing signal. The control unit 191 also transmits an energizing signal to a switch located inside or adjacent to the heater 17 during the determined energizing time. The switch remains in the ON state while it is receiving the energizing signal, and power is supplied to the heater 17. Alternatively, the inverter 153 may be configured to supply power to the magnetron 152 while it is receiving power without receiving a power supply signal, or it may be connected in series with the heater 17 and supply power to the magnetron 152 when the heater 17 is switched on.

[0041] Furthermore, the energizing time of the magnetron 152 and the energizing time of the heater 17 may be different.

[0042] Figure 5 is a flowchart showing an example of the processing of the control circuit 19. The control unit 191 of the control circuit 19 acquires the input output setpoint and standard time from the operation panel 19b (S1). The control unit 191 acquires the temperature of the magnetron 152 from the temperature sensor 19a (S2).

[0043] The control unit 191 calculates a conversion coefficient based on the acquired output setpoint and the temperature of the magnetron 152 (S3). Specifically, the control unit 191 identifies a first coefficient corresponding to the output setpoint. The first coefficient is higher the higher the output setpoint and lower the lower the output setpoint. The first coefficient is, for example, proportional to the output setpoint. The control unit 191 also identifies a second coefficient corresponding to the temperature of the magnetron 152. The second coefficient is lower the higher the temperature of the magnetron 152 and higher the lower the temperature of the magnetron 152. The control unit 191 calculates the conversion coefficient by multiplying the first coefficient and the second coefficient.

[0044] The control unit 191 transmits the calculated conversion coefficient to the inverter 153 (S4). The control unit 191 also starts transmitting power supply signals to the inverter 153 and the heater 17 (S5). The inverter 153 supplies power to the magnetron 152 at a voltage value obtained by multiplying the voltage value of the power supplied from the household power supply S via the converter 18 by the conversion coefficient. The inverter 153 acquires the anode current value of the magnetron 152 and transmits the acquired anode current value to the control unit 191. The control unit 191 acquires the anode current value from the inverter 153 (S6).

[0045] The control unit 191 calculates the power supply output voltage value based on the acquired anode current value (S7). Specifically, the control unit 191 calculates the voltage value of the power output by the inverter 153 to the magnetron 152 based on the anode current value. The control unit 191 calculates the power supply output voltage value by dividing the calculated voltage value by a conversion coefficient. The conversion coefficient is calculated based on the temperature and output setting value of the magnetron 152, as described above. In other words, the power supply output voltage value is calculated based on the anode current value, the temperature and output setting value of the magnetron 152.

[0046] The control unit 191 determines the energizing time of the magnetron 152 and heater 17 based on the calculated power supply output voltage value (S8).

[0047] Figure 6 is an explanatory diagram showing an example of a power-on time table T. The power-on time table T has two management items (fields): a power supply output voltage value field and a power-on time field. The power supply output voltage value field stores the voltage value used for comparison with the calculated power supply output voltage value. In the example shown in Figure 6, the power-on time table T includes records for every 1V from 90V to 110V. If the calculated power supply output voltage value is not an integer, the record with the closest voltage value is referenced.

[0048] The energizing time field in the energizing time table T stores the correction degree for the energizing time of the magnetron 152 and heater 17 relative to the power supply output voltage value. The power supply output voltage value of the household power supply S is normally the standard voltage value (e.g., 100V), but depending on the power transmission conditions, the degree of deterioration of the wiring or outlets, or the power usage in the household, power may be supplied at a voltage value higher or lower than the standard voltage value. When the power supply output voltage value of the household power supply S is the same as the standard voltage value (100V), the energizing time is, for example, the standard time entered by the user in the control panel 19b, the correction degree is 0%, and the energizing time is determined to be the standard time. In this embodiment, "same value" includes a predetermined error range and includes cases where the values ​​are approximately the same, i.e., substantially the same. When the power supply output voltage value is higher than the standard voltage value, the correction degree becomes a negative value. For example, if the power supply output voltage value is 10% higher than the standard voltage value, the correction degree becomes -10%, and the energizing time is determined to be 10% shorter than the standard time. If the power supply output voltage is lower than the standard voltage, the correction factor will be a positive value. For example, if the power supply output voltage is 10% lower than the standard voltage, the correction factor will be +10%, and the power-on time will be determined to be 10% longer than the standard time.

[0049] The method for determining the energizing time of the magnetron 152 and heater 17 is not limited to this. For example, the control unit 191 may determine the degree of correction for the energizing time by inverse correlation or inverse proportion according to the ratio of the power supply output voltage value to the standard time. Also, the degree of correction of the magnetron 152 and the degree of correction of the heater 17 for a calculated power supply output voltage value may be different, and the energizing time of the magnetron 152 and the energizing time of the heater 17 for a calculated power supply output voltage value may be different.

[0050] The control unit 191 stops transmitting the power supply signal to the inverter 153 and heater 17 (S9) and terminates the process after the power supply time calculated in S8 has elapsed since the start of transmitting the power supply signal to the inverter 153 and heater 17 in S5. The control unit 191 is equipped with a timer function and starts measuring time when the transmission of the power supply signal starts in S5, and determines the power supply time immediately after the inverter 153 starts supplying power to the magnetron 152. The control unit 191 stops transmitting the power supply signal when the determined time matches the time measured by the timer function.

[0051] With the above configuration and processing, the cooking appliance 1 does not require a circuit configuration for directly measuring the power supply output voltage value, and the control unit 191 acquires the power supply output voltage value and determines the energizing time of the magnetron 152 and heater 17 based on the power supply output voltage value. Therefore, the cooking appliance 1 according to this embodiment can determine the energizing time of the magnetron 152 and heater 17 with a simple configuration.

[0052] The embodiments disclosed herein should be considered in all respects as illustrative and not restrictive. The technical features described in each embodiment can be combined with each other, and the scope of the present invention is intended to include all modifications within the claims and scope equivalent to the claims. Furthermore, the independent and dependent claims described in the claims can be combined with each other in any combination, regardless of the form of reference. In addition, the claims use a multi-claim format in which claims refer to two or more other claims (multi-claim format), but are not limited to this. They may also be described using a multi-claim format in which at least one multi-claim refers to another multi-claim (multi-multi-claim format). [Explanation of Symbols]

[0053] 1:Heating cooker 2:Heating chamber 3: Cooking dish 4:Food 10: Antenna Room 11: Outer box 12: Door 13: Inner box 14: Bulkhead 15: Irradiation device 17: Heater 18: Converter 19: Control circuit 19a: Temperature sensor 19b: Operation panel 121: Handle 122:Operation unit 151: Rotating antenna 152: Magnetron 152a: Anode 153: Inverter 191: Control Unit 192: Storage section 193: Input / Output Interface P: Program S: Household power supply T: Power-on time table

Claims

1. A magnetron that irradiates microwaves when an electric current is applied, A heater that generates heat when electricity is applied, A control unit that controls the supply of power to the magnetron and the heater. Equipped with, The control unit determines the energizing time of the magnetron and the heater based on the anode current value of the magnetron. Heating cooker.

2. The system includes an inverter that supplies power to the magnetron, The aforementioned inverter is The anode current value of the magnetron is obtained, The acquired anode current value is output to the control unit. A heating appliance according to claim 1.

3. The control unit, Based on the anode current value of the magnetron, the output voltage value of the power supply that supplies power to the magnetron and the heater is calculated. The energizing time of the magnetron and the heater is determined based on the calculated power supply output voltage value. A heating appliance according to claim 1 or 2.

4. The control unit, If the calculated power supply output voltage value is the same as the standard voltage value of household power supply, the energizing time of the magnetron and the heater is determined to be the standard time. If the calculated power supply output voltage value is higher than the standard voltage value, the energizing time for the magnetron and the heater is set to a time shorter than the standard time. If the calculated power supply output voltage value is lower than the standard voltage value, the energizing time for the magnetron and the heater is set to be longer than the standard time. A cooking appliance according to claim 3.

5. The control unit, The power supply output voltage value is calculated based on the anode current value of the magnetron, the temperature of the magnetron, and the output setting value of the magnetron. A cooking appliance according to claim 3.

6. The control unit, A first coefficient is identified according to the output setting value of the magnetron. A second coefficient is determined according to the temperature of the magnetron, The conversion coefficient is calculated by multiplying the first coefficient and the second coefficient. Based on the anode current value of the magnetron, the voltage value of the power supplied to the magnetron is calculated. The power supply output voltage value is calculated by dividing the voltage value of the power supplied to the magnetron by the conversion coefficient. A heating appliance according to claim 5.

7. A magnetron that irradiates microwaves when an electric current is applied, A heater that generates heat when electricity is applied and A control unit that controls the supply of power to the magnetron and the heater. A control method for a heating appliance, comprising: The control unit determines the energizing time of the magnetron and the heater based on the anode current value of the magnetron. Control method.

8. A magnetron that irradiates microwaves when an electric current is applied, A heater that generates heat when electricity is applied and A control unit that controls the supply of power to the magnetron and the heater. A computer program that can be executed in a cooking appliance equipped with the following: The control unit determines the energizing time of the magnetron and the heater based on the anode current value of the magnetron. A computer program that executes a process.

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