Heating Regulator

Abstract

To provide a technology to heat an object to be heated appropriately.SOLUTION: A cooker may include a heating part for heating an object to be cooked, a change instruction part for receiving an instruction to change heating force of the heating part, and a control part for controlling the heating part. The heating part may alternately execute first heating over a first period with first heating force smaller than heating force at start of heating and second heating over a second period with second heating force smaller than the first heating force. While the first heating is being executed, the control part may change the heating force of the heating part to the heating force at the start of heating when an instruction is received at the change instruction part for changing the heating force to the heating force larger than reference heating force and smaller than the heating force at the start of heating with the prescribed heating force larger than the first heating force and smaller than the heating force at the start of heating as the reference heating force.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The technology disclosed in this specification relates to a cooking appliance capable of changing heating power.

Background Art

[0002] The cooking appliance disclosed in Patent Document 1 includes a heating unit that heats a cooking container (heating target), a change instruction unit that receives an instruction to change the heating power of the heating unit, and a control unit that controls the heating unit. The control unit switches the heating power of the heating unit between a first heating power and a second heating power smaller than the first heating power to heat the noodles in the cooking container. In the noodle boiling process, when an instruction to change the heating power of the heating unit is given by the change instruction unit, the control unit changes only the first heating power among the first heating power and the second heating power.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the cooking appliance of Patent Document 1, it is conceivable that the heating target may be overheated by changing the first heating power. Therefore, this specification provides a technology capable of appropriately heating the heating target.

Means for Solving the Problems

[0005] In a first aspect of this technology, a cooking appliance may include a heating unit for heating an object to be heated, a change instruction unit for receiving instructions to change the heating power of the heating unit, and a control unit for controlling the heating unit. The heating unit may alternately perform a first heating for a first period with a first heating power smaller than the heating power at the start of heating, and a second heating for a second period with a second heating power smaller than the first heating power. During the execution of the first heating, the control unit may change the heating power of the heating unit to a predetermined heating power that is greater than the first heating power and smaller than the heating power at the start of heating, if the change instruction unit receives an instruction to change the heating power to a heating power that is greater than the reference heating power and smaller than the heating power at the start of heating.

[0006] This configuration allows for increased heating power in the heating section while simultaneously preventing overheating of the object being heated by imposing limitations (i.e., limiting the upper limit of the modified heating power to the standard heating power). Therefore, the object being heated can be heated appropriately. For example, in simmered dishes, this allows for faster boiling of the broth while preventing the broth from boiling over and the ingredients from burning.

[0007] In a second embodiment, in the first embodiment, the control unit may change the heating force of the heating unit to the instructed heating force if the change instruction unit receives an instruction to change the heating force to a heat force greater than the first heating force and less than the reference heating force while the first heating is being performed.

[0008] With this configuration, the heating force of the heating unit is changed to the specified heating force, so the object to be heated can be heated appropriately.

[0009] In a third embodiment, the cooking appliance may, in the first or second embodiment, include a heating unit for heating an object to be heated, a change instruction unit for receiving instructions to change the heating power of the heating unit, and a control unit for controlling the heating unit. The heating unit may alternately perform a first heating for a first period with a first heating power smaller than the heating power at the start of heating, and a second heating for a second period with a second heating power smaller than the first heating power. The control unit may change the heating power of the heating unit to the heating power at the start of heating if the change instruction unit receives an instruction to change to a heating power larger than the heating power at the start of heating while the first heating is being performed.

[0010] This configuration allows for increased heating power in the heating section while simultaneously preventing overheating of the object being heated by imposing limitations (i.e., limiting the upper limit of the modified heating power to the initial heating power). Therefore, the object being heated can be heated appropriately. For example, in simmered dishes, this allows for faster boiling of the broth while preventing the broth from boiling over and the ingredients from burning.

[0011] In the fourth embodiment, in any one of the first to third embodiments, the control unit may change the heating power of the heating unit during the execution of the first heating, maintain the changed heating power until the end of the first period, and then perform the second heating.

[0012] With this configuration, the modified heating power is maintained until the end of the first period, allowing the object to be heated to be sufficiently heated. Furthermore, it prevents overheating of the object after the end of the first period.

[0013] In a fifth embodiment, in any one of the first to fourth embodiments, the cooking appliance may include a heating unit for heating an object to be heated, a change instruction unit for receiving instructions to change the heating power of the heating unit, and a control unit for controlling the heating unit. The heating unit may alternately perform a first heating for a first period with a first heating power smaller than the heating power at the start of heating, and a second heating for a second period with a second heating power smaller than the first heating power. If the change instruction unit receives an instruction to change the heating power of the heating unit to a heating power greater than the second heating power and smaller than the first heating power while the second heating is being performed, the control unit may change the heating power of the heating unit to the instructed heating power.

[0014] This configuration allows for increased heating power in the heating section while simultaneously preventing overheating of the object being heated by imposing limitations (i.e., limiting the upper limit of the modified heating power to the first heating power). Therefore, the object being heated can be heated appropriately. For example, in simmered dishes, this allows for faster boiling of the broth while preventing the broth from boiling over and the ingredients from burning.

[0015] In the sixth embodiment, in any one of the first to fifth embodiments, the control unit may change the heating force of the heating unit during the execution of the second heating, maintain the changed heating force until the end of the second period, and then perform the first heating.

[0016] With this configuration, the modified heating power is maintained until the end of the second period, allowing the object to be heated to be sufficiently heated. Furthermore, it prevents overheating of the object after the end of the second period.

[0017] In the seventh embodiment, in any one of the first to sixth embodiments, the cooking appliance may include a heating unit for heating an object to be heated, a change instruction unit for receiving instructions to change the heating power of the heating unit, and a control unit for controlling the heating unit. The heating unit may alternately perform a first heating for a first period with a first heating power smaller than the heating power at the start of heating, and a second heating for a second period with a second heating power smaller than the first heating power. If the change instruction unit receives an instruction to change to a heating power greater than the first heating power while the second heating is being performed, the control unit may change the heating power of the heating unit to a heating power greater than the first heating power and maintain the changed heating power for the same period as the first period.

[0018] This configuration allows for increased heating power in the heating section while simultaneously preventing overheating of the object being heated by imposing limitations (i.e., limiting the duration of the modified heating power to the same period as the first period). Therefore, the object being heated can be heated appropriately. For example, in simmered dishes, this allows for faster boiling of the broth while preventing the broth from boiling over and the ingredients from burning.

[0019] In the eighth embodiment, in any one of the first to seventh embodiments, the control unit may, during the execution of the second heating, change the heating force of the heating unit to the reference heating force, which is a predetermined heating force greater than the first heating force and less than the heating force at the start of heating, if the change instruction unit receives an instruction to change to a larger heating force that is greater than the reference heating force and less than the heating force at the start of heating, and maintain the changed heating force for the same period as the first period.

[0020] With this configuration, the heating force of the heating element is limited to a standard heating force, which prevents overheating of the object being heated.

[0021] In a ninth aspect, in any one of the first to eighth aspects, when an instruction for changing to a heating power that is greater than the first heating power and less than the reference heating power is received by the change instruction unit during the execution of the second heating, the control unit changes the heating power of the heating unit to the instructed heating power, and may maintain the changed heating power over the same period as the first period.

[0022] According to this configuration, since the heating power of the heating unit is changed to the instructed heating power, the heating target can be appropriately heated.

[0023] In a tenth aspect, in any one of the first to ninth aspects, when an instruction for changing to a heating power that is greater than the heating power at the start of heating is received by the change instruction unit during the execution of the second heating, the control unit changes the heating power of the heating unit to the heating power at the start of heating, and may maintain the changed heating power over the same period as the first period.

[0024] According to this configuration, since the heating power of the heating unit is limited to the heating power at the start of heating, it is possible to suppress overheating the heating target.

[0025] In an eleventh aspect, in any one of the first to tenth aspects, the cooking heater may include a heating unit that heats a heating target, a change instruction unit that receives an instruction for changing the heating power of the heating unit, and a control unit that controls the heating unit. The heating unit may alternately execute a first heating over a first period with a first heating power that is less than the heating power at the start of heating, and a second heating over a second period with a second heating power that is less than the first heating power. During the execution of the first heating, when an instruction for changing to a predetermined heating power that is greater than the first heating power and less than the heating power at the start of heating is received by the change instruction unit as a reference heating power, the control unit may change the heating mode of the heating unit to a heating mode that alternately executes heating over the same period as the first period with the reference heating power and the second heating.

[0026] According to this configuration, while increasing the heating power of the heating unit, by providing a limit (that is, by limiting the upper limit of the changed heating power to the reference heating power), it is possible to suppress overheating of the heating target. Therefore, the heating target can be appropriately heated. For this reason, for example, in cooking ingredients, the cooking juice can be boiled quickly, and it is possible to suppress the cooking juice from spilling over and the ingredients from burning.

[0027] In the twelfth aspect, in any one of the first to eleventh aspects, when an instruction for changing to a heating power that is greater than the first heating power and less than the reference heating power is received by the change instruction unit during the execution of the first heating, the control unit may change the heating mode of the heating unit to an alternating execution of heating for the same period as the first period with the instructed heating power and the second heating.

[0028] According to this configuration, since the heating power of the heating unit is changed to the instructed heating power, the heating target can be appropriately heated. In addition, since the changed heating power and the second heating power are repeated, the heating target can be heated more sufficiently than when the first heating power and the second heating power are repeated.

[0029] In the thirteenth aspect, in any one of the first to twelfth aspects, the cooking heater may include a heating unit that heats a heating target, a change instruction unit that receives an instruction for changing the heating power of the heating unit, and a control unit that controls the heating unit. The heating unit may alternately execute a first heating for a first period with a first heating power that is less than the heating power at the start of heating and a second heating for a second period with a second heating power that is less than the first heating power. When an instruction for changing to a heating power that is greater than the heating power at the start of heating is received by the change instruction unit during the execution of the first heating, the control unit may change the heating mode of the heating unit to an alternating execution of heating for the same period as the first period with the heating power at the start of heating and the second heating.

[0030] This configuration allows for increased heating power in the heating section while simultaneously preventing overheating of the object being heated by imposing limitations (i.e., limiting the upper limit of the modified heating power to the initial heating power). Therefore, the object being heated can be heated appropriately. For example, in simmered dishes, this allows for faster boiling of the broth while preventing the broth from boiling over and the ingredients from burning.

[0031] In the 14th embodiment, in any one of the first to 13 embodiments, the cooking appliance may include a heating unit for heating an object to be heated, a change instruction unit for receiving instructions to change the heating power of the heating unit, and a control unit for controlling the heating unit. The heating unit may alternately perform a first heating for a first period with a first heating power smaller than the heating power at the start of heating, and a second heating for a second period with a second heating power smaller than the first heating power. If the change instruction unit receives an instruction to change to a heating power greater than the second heating power and smaller than the first heating power while the second heating is being performed, the control unit may change the heating mode of the heating unit to a heating mode in which heating for the same period as the second period with the instructed heating power and the first heating are alternately performed.

[0032] This configuration allows for increased heating power in the heating section while simultaneously preventing overheating of the object being heated by imposing limitations (i.e., limiting the upper limit of the modified heating power to the first heating power). Therefore, the object being heated can be heated appropriately. For example, in simmered dishes, this allows for faster boiling of the broth while preventing the broth from boiling over and the ingredients from burning.

[0033] In the 15th embodiment, in any one of the first to 14 embodiments, the cooking appliance may include a heating unit for heating an object to be heated, a change instruction unit for receiving instructions to change the heating power of the heating unit, and a control unit for controlling the heating unit. The heating unit may alternately perform a first heating for a first period with a first heating power smaller than the heating power at the start of heating, and a second heating for a second period with a second heating power smaller than the first heating power. If the change instruction unit receives an instruction to change to a heating power greater than the first heating power while the second heating is being performed, the control unit may change the heating mode of the heating unit to a heating mode in which heating for the same period as the first period with a heating power greater than the first heating power and the second heating are performed alternately.

[0034] This configuration allows for increased heating power in the heating section while simultaneously preventing overheating of the object being heated by imposing limitations (i.e., limiting the duration of the modified heating power to the same period as the first period). Therefore, the object being heated can be heated appropriately. For example, in simmered dishes, this allows for faster boiling of the broth while preventing the broth from boiling over and the ingredients from burning.

[0035] In the sixteenth embodiment, in any one of the first to fifteen embodiments, the control unit may, during the execution of the second heating, change the heating mode of the heating unit to a heating mode in which heating for the same period as the first period using the reference heating force and the second heating are alternately performed, if the control unit receives an instruction to change to a heating force that is greater than the reference heating force and less than the heating force at the start of heating, with a predetermined heating force that is greater than the first heating force and less than the heating force at the start of heating being used as the reference heating force.

[0036] With this configuration, the heating force of the heating unit is limited to the standard heating force, thus preventing overheating of the object to be heated. Furthermore, since the modified heating force and the second heating force are repeated, the object to be heated can be heated more thoroughly than if the first heating force and the second heating force were repeated.

[0037] In the 17th embodiment, in any one of the first to 16 embodiments, if the control unit receives an instruction from the change instruction unit to change the heating force to one that is greater than the first heating force and less than the reference heating force while the second heating is being performed, the heating mode of the heating unit may change to a heating mode in which heating for the same period as the first period at the instructed heating force and the second heating are performed alternately.

[0038] With this configuration, the heating force of the heating unit is changed to the specified heating force, allowing the object to be heated to be heated appropriately. Furthermore, since the changed heating force and the second heating force are repeated, the object to be heated can be heated more thoroughly than if the first heating force and the second heating force were repeated.

[0039] In the 18th embodiment, in any one of the first to 17 embodiments, if the control unit receives an instruction from the change instruction unit to change the heating force to a greater than the heating force at the start of heating while the second heating is being performed, the control unit changes the heating mode of the heating unit to a heating mode in which heating for the same period as the first period at the heating force at the start of heating and the second heating are performed alternately.

[0040] With this configuration, the heating force of the heating unit is limited to the initial heating force, thus preventing overheating of the object being heated. Furthermore, since the modified heating force and the second heating force are repeated, the object being heated can be heated more thoroughly than if the first heating force and the second heating force were repeated.

[0041] In the 19th embodiment, in any one of the 10th to 18th embodiments, the cooking appliance may further include a temperature detection unit for detecting the temperature of the object to be heated. After changing the heating mode of the heating unit, if the control unit determines, based on the temperature detected by the temperature detection unit, that the temperature of the object to be heated exceeds a predetermined reference temperature, it may return the heating mode of the heating unit to a heating mode in which the first heating and the second heating are performed alternately.

[0042] With this configuration, if the temperature of the object to be heated is determined to exceed the reference temperature, the heating mode of the heating unit returns to its original state, thus preventing overheating of the object to be heated. [Brief explanation of the drawing]

[0043] [Figure 1] A block diagram of the cooking appliance is shown. [Figure 2] This shows a perspective view of the cooking appliance from the front. [Figure 3] This chart shows the timing for normal heating and alternating heating. [Figure 4] A flowchart of the first heating mode process is shown (1). [Figure 5] The flowchart for the first heating mode process is shown (2). [Figure 6] The timing chart for the first heating mode processing is shown (1). [Figure 7] The timing chart for the first heating mode processing is shown (2). [Figure 8] The timing chart for the first heating mode processing is shown (3). [Figure 9] The timing chart for the first heating mode processing is shown (4). [Figure 10] The timing chart for the first heating mode processing is shown (5). [Figure 11] The timing chart for the first heating mode processing is shown (6). [Figure 12] The timing chart for the first heating mode processing is shown (7). [Figure 13] A flowchart of the second heating mode process is shown (1). [Figure 14] A flowchart of the second heating mode process is shown (2). [Figure 15] The timing chart for the second heating mode processing is shown (1). [Figure 16] The timing chart for the second heating mode processing is shown (2). [Figure 17]The timing chart for the second heating mode processing is shown (3). [Figure 18] The timing chart for the second heating mode processing is shown (4). [Figure 19] The timing chart for the second heating mode processing is shown (5). [Figure 20] The timing chart for the second heating mode processing is shown (6). [Figure 21] The timing chart for the second heating mode processing is shown (7). [Modes for carrying out the invention]

[0044] (Configuration of heating appliance 2; Figures 1 and 2) Referring to Figures 1 and 2, the configuration of the cooking appliance 2 in this embodiment will be described. The cooking appliance 2 is a gas-burning built-in cooktop used in a system kitchen. The cooking appliance 2 comprises a main body 4 whose front surface 4a is exposed to the front side of the system kitchen, and a top plate 6 located on top of the main body 4 and exposed to the countertop of the system kitchen. The top plate 6 is provided with three cooktop burners 10 (an example of a heating unit) for heating objects (for example, cooking containers such as pots) on the trivet (reference numerals omitted). The main body 4 is also provided with a grill 8.

[0045] On the front surface 4a of the main unit 4, to the right of the grill 8 as viewed from the user, there are three cooktop control units 12 (an example of a change instruction unit) and a cooktop panel 14. Each of the three cooktop control units 12 corresponds to one of the three cooktop burners 10. The cooktop control units 12 are for igniting and extinguishing the cooktop burners 10, as well as for adjusting the heating power of the cooktop burners 10. The cooktop control units 12 are alternate-type switches. When the user moves the cooktop control unit 12 from the extinguishing position to the ignition position (hereinafter referred to as the "ignition operation"), the cooktop burner 10 is ignited, and when the user moves the cooktop control unit 12 from the ignition position to the extinguishing position (hereinafter referred to as the "extinguishing operation"), the cooktop burner 10 is extinguished. The ignition position is the position where the front of the stove control unit 12 protrudes forward beyond the front of the main body 4a, and the extinguishing position is the position where the stove control unit 12 is housed inside the main body 4.

[0046] The heating power of the stove burner 10 is changed by the user operating the stove control unit 12 clockwise or counterclockwise while the stove control unit 12 is in the ignition position. The heating power of the stove burner 10 is indicated by the operation of the stove control unit 12.

[0047] The stovetop panel 14 comprises a display unit 14a and an operation unit 14b. The display unit 14a shows the operating status of the stovetop burner 10 and the automatic cooking menu. The user can input settings related to automatic cooking (e.g., heating power, time) by operating the operation unit 14b.

[0048] Furthermore, each of the three stove burners 10 is provided with a temperature sensor 16 (an example of a temperature detection unit) for detecting the temperature of the object to be heated by the stove burner 10 (i.e., the cooking container).

[0049] The cooking appliance 2 also includes a control unit 50. The control unit 50 includes a memory 52 and a timer 54. The control unit 50 controls the operation of the cooking appliance 2 according to a program 60 stored in the memory 52. ​​For example, the control unit 50 adjusts the opening degree of the flow control valve (not shown) of the gas supply passage (not shown) connected to the stove burner 10 in response to the user operating the stove operation unit 12. The control unit 50 also performs the first heating mode processing (see Figures 4 and 5) and the second heating mode processing (see Figures 13 and 14), which will be described later.

[0050] (Explanation of normal heating and alternating heating; Figure 3) Next, the normal heating and alternating heating performed by the cooking appliance 2 will be described. The cooking appliance 2 is capable of performing both normal heating and alternating heating. As shown in Figure 3, normal heating is a mode in which the object to be heated is heated while maintaining a constant heating power of the stove burner 10 without alternating changes. In normal heating, the cooking appliance 2 heats the object to be heated while maintaining the heating power instructed by the operation of the stove control unit 12.

[0051] Alternating heating is a method of heating an object by automatically alternating between heating with a relatively high heating force and heating with a relatively low heating force. In alternating heating, the cooking appliance 2 automatically alternating between, for example, a first heating H1 with a first heating force h1 for a first period t1 (for example, 3 seconds) and a second heating H2 with a second heating force h2 for a second period t2 (for example, 3 seconds). The first period t1 and the second period t2 may be the same length or different lengths. The end of the first period t1 and the start of the second period t2 are at the same time, and the end of the second period t2 and the start of the first period t1 are at the same time. The second heating H2 starts when the first heating H1 ends, and the first heating H1 starts when the second heating H2 ends. The first heating force h1 is a higher heating force than the second heating force h2. Furthermore, the first heating force h1 is set to a heating force h0 at the start of heating (i.e., when the stove burner 10 is ignited). The cooking appliance 2 performs normal heating, for example, when an ignition operation is received at the stove control unit 12. The cooking appliance 2 also performs alternating heating, for example, when an alternating heating instruction is received at the control unit 14b of the stove panel 14.

[0052] (First heating mode processing: Figures 4 and 5) The first heating mode process will be described with reference to Figures 4 and 5. The first heating mode process is started, for example, when an ignition operation is received by the stove operation unit 12.

[0053] In S10 of the first heating mode processing, the control unit 50 of the cooking appliance 2 starts normal heating using the stove burner 10. The heating force h0 of the stove burner 10 at the start of normal heating (i.e., when the stove burner 10 is ignited) is set to a heating force greater than the first heating force h1 of alternating heating. The heating force of the stove burner 10 can be changed by operating the stove operation unit 12. The control unit 50 adjusts the heating force of the stove burner 10 during normal heating to the heating force hx instructed by operating the stove operation unit 12.

[0054] In S12, the control unit 50 determines whether or not an instruction for alternating heating is received at the operation unit 14b of the stove panel 14. If an instruction for alternating heating is received (YES in S12), the process proceeds to S14. If an instruction for alternating heating is not received (NO in S12), the process waits. In S14, the control unit 50 starts alternating heating with the stove burner 10. That is, the control unit 50 alternately performs first heating H1 over a first period t1 with a first heating force h1, and second heating H2 over a second period t2 with a second heating force h2 (see Figure 3).

[0055] Furthermore, if the control unit 50 receives a fire extinguishing command from the stove operation unit 12 while the stove burner 10 is performing normal heating or alternating heating, it will terminate the normal heating or alternating heating and extinguish the stove burner 10. Also, if the control unit 50 receives an instruction to terminate alternating heating from the operation unit 14b of the stove panel 14 while the stove burner 10 is performing alternating heating, it will terminate the alternating heating and resume normal heating. In addition, if a duration for alternating heating is set, the control unit 50 will terminate the alternating heating and resume normal heating when the set duration expires. In these cases, the heating power of the re-executed normal heating is adjusted to, for example, the same heating power as the normal heating immediately before the alternating heating started.

[0056] In S16, following S14, the control unit 50 determines whether or not an instruction to change the heating power of the stove burner 10 is received by the stove operation unit 12. The user operates the stove operation unit 12 to receive an instruction to change the heating power of the stove burner 10. If the instruction to change the heating power is received (YES in S16), the process proceeds to S18. If the instruction to change the heating power is not received (NO in S16), the process waits.

[0057] In S18, the control unit 50 determines whether the first heating H1 is being performed in the currently running alternating heating. If the first heating H1 is being performed (YES in S18), the process proceeds to S20. If the first heating H1 is not being performed (i.e., if the second heating H2 is being performed, NO in S18), the process proceeds to S40 in Figure 5. In other words, if a heating force change instruction is received during the first period t1 in which the first heating H1 is performed (see Figures 6, 7, and 8), the process proceeds to S20, and if a heating force change instruction is received during the second period t2 in which the second heating H2 is performed (see Figures 9, 10, 11, and 12), the process proceeds to S40.

[0058] In S20, following a YES response in S18, the control unit 50 determines whether the heating force hx instructed by the change instruction in S16 is greater than the heating force h0 at the start of heating. If the heating force hx instructed by the change instruction in S16 is greater than the heating force h0 at the start of heating (YES in S20), the process proceeds to S22. If the heating force hx instructed by the change instruction in S16 is not greater than (less than) the heating force h0 at the start of heating (NO in S20), the process proceeds to S24. In S22, the control unit 50 changes the heating force of the stove burner 10 to the heating force h0 at the start of heating (see Figure 6).

[0059] In S24, following NO in S20, the control unit 50 determines whether the heating force hx instructed by the change instruction in S16 is greater than the first heating force h1 of the alternating heating. If the heating force hx instructed by the change instruction in S16 is greater than the first heating force h1 (YES in S24), the process proceeds to S25. If the heating force hx instructed by the change instruction in S16 is not greater than (less than) the first heating force h1 (NO in S24), the process proceeds to S28. In S28, the control unit 50 does not change the heating force of the stove burner 10.

[0060] In S25, following a YES response in S24, the control unit 50 determines whether the heating force hx instructed by the change instruction in S16 is greater than a predetermined reference heating force hr. The predetermined reference heating force hr is greater than the first heating force h1 and less than the heating force h0 at the start of heating. The reference heating force hr is set, for example, to the average value of the first heating force h1 and the heating force h0 at the start of heating. The reference heating force hr is set, for example, at the start of normal heating (i.e., when the stove burner 10 is ignited) according to the heating force h0 at the start of heating. If the heating force hx instructed by the change instruction in S16 is greater than the reference heating force hr (YES in S25), the process proceeds to S27. If the heating force hx instructed by the change instruction in S16 is not greater than (less than) the reference heating force hr (NO in S25), the process proceeds to S26. In S27, the control unit 50 changes the heating force of the stove burner 10 to the reference heating force hr (see Figure 7). Meanwhile, in S26, the control unit 50 changes the heating power of the stove burner 10 to the heating power hx instructed by the change instruction in S16 (see Figure 8).

[0061] In S30, following S22, S27, or S26, the control unit 50 maintains the changed heating power (h0, hr, or hx) of the stove burner 10 until the end of the first period t1 of alternating heating (see Figures 6, 7, and 8). After maintaining the changed heating power until the end of the first period t1, the control unit 50 changes the heating power of the stove burner 10 to the second heating power h2.

[0062] In the following step S32, the control unit 50 again performs alternating heating of the first heating element H1 and the second heating element H2. After that, the process returns to S16.

[0063] As shown in Figure 5, in S40, following NO in S18, the control unit 50 determines whether the heating force hx instructed by the change instruction in S16 is greater than the heating force h0 at the start of heating. If the heating force hx instructed by the change instruction in S16 is greater than the heating force h0 at the start of heating (YES in S40), the process proceeds to S42. If the heating force hx instructed by the change instruction in S16 is not greater than (less than) the heating force h0 at the start of heating (NO in S40), the process proceeds to S44. In S42, the control unit 50 changes the heating force of the stove burner 10 to the heating force h0 at the start of heating (see Figure 9).

[0064] In S44, following NO in S40, the control unit 50 determines whether the heating force hx instructed by the change instruction in S16 is greater than the first heating force h1 of the alternating heating. If the heating force hx instructed by the change instruction in S16 is greater than the first heating force h1 (YES in S44), the process proceeds to S45. If the heating force hx instructed by the change instruction in S16 is not greater than (less than) the first heating force h1 (NO in S44), the process proceeds to S50.

[0065] In S45, following a YES response in S44, the control unit 50 determines whether the heating force hx instructed by the change instruction in S16 is greater than the reference heating force hr. The reference heating force hr is greater than the first heating force h1 and less than the heating force h0 at the start of heating. If the heating force hx instructed by the change instruction in S16 is greater than the reference heating force hr (YES in S45), the process proceeds to S47. If the heating force hx instructed by the change instruction in S16 is not greater than (less than) the reference heating force hr (NO in S45), the process proceeds to S46. In S47, the control unit 50 changes the heating force of the stove burner 10 to the reference heating force hr (see Figure 10). On the other hand, in S46, the control unit 50 changes the heating force of the stove burner 10 to the heating force hx instructed by the change instruction in S16 (see Figure 11).

[0066] In S48, following S42, S47, or S46, the control unit 50 maintains the changed heating power (h0, hr, or hx) of the stove burner 10 for the same period as the first alternating heating period t1 (see Figures 9, 10, and 11). After maintaining the changed heating power for the same period as the first period t1, the control unit 50 changes the heating power of the stove burner 10 to the second heating power h2.

[0067] In S50, following NO in S44, the control unit 50 determines whether the heating force hx instructed by the change instruction in S16 is greater than the second heating force h2 for alternating heating. If the heating force hx instructed by the change instruction in S16 is greater than the second heating force h2 (YES in S50), the process proceeds to S52. If the heating force hx instructed by the change instruction in S16 is not greater than (less than) the second heating force h2 (NO in S50), the process proceeds to S54. In S52, the control unit 50 changes the heating force of the stove burner 10 to the heating force hx instructed by the change instruction in S16 (see Figure 12). On the other hand, in S54, following NO in S50, the control unit 50 does not change the heating force of the stove burner 10.

[0068] In S56, following S52, the control unit 50 maintains the changed heating power (hx) of the stove burner 10 until the end of the second period t2 of alternating heating (see Figure 12). After maintaining the changed heating power until the end of the second period t2, the control unit 50 changes the heating power of the stove burner 10 to the first heating power h1.

[0069] In S58, following S48 or S56, the control unit 50 again performs alternating heating of the first heating H1 and the second heating H2. After that, the process returns to S16.

[0070] (Second heating mode processing: Figures 13 and 14) The second heating mode process will be described with reference to Figures 13 and 14. Detailed explanations of the second heating mode process are omitted for parts that are similar to the first heating mode process described above (see Figures 4 and 5).

[0071] In the second heating mode processing, as shown in Figure 13, the process in S70 is executed following the process in S30 described above. In S70, the control unit 50 changes the heating mode of the stove burner 10. Specifically, the control unit 50 changes the alternating heating mode to a heating mode in which the second heating H2 and the third heating H3 are performed alternately (see Figures 15, 16, and 17). The third heating H3 is a mode in which heating is performed for the same period as the first period t1 using the heating force (h0, hr, or hx) after the change in S22, S27, or S26 described above.

[0072] In the following step S72, the control unit 50 determines whether the temperature Tx of the object to be heated exceeds a predetermined reference temperature Th. For example, the control unit 50 samples the temperature detected by the temperature sensor 16 a predetermined number of times at predetermined intervals (for example, 5 samples at 1-second intervals), and determines that the temperature Tx of the object to be heated exceeds the reference temperature Th if all of the samples fall within a predetermined temperature range (for example, 98°C to 102°C). If at least one of the sampled temperatures does not fall within the predetermined temperature range, it determines that the temperature Tx of the object to be heated does not exceed the reference temperature Th. If it is determined that the temperature Tx of the object to be heated exceeds the reference temperature Th (YES in S72), the process proceeds to S74. If it is not determined that the temperature Tx of the object to be heated exceeds the reference temperature Th (NO in S72), the process waits.

[0073] In S74, the control unit 50 returns the heating mode of the stove burner 10 to its original state. Specifically, the control unit 50 changes the alternating heating mode from one in which the second heating H2 and the third heating H3 are performed alternately to one in which the first heating H1 and the second heating H2 are performed alternately (see Figures 15, 16, and 17). After that, the process returns to S16.

[0074] In the second heating mode processing, as shown in Figure 14, the process in S80 is executed following S48. In S80, the control unit 50 changes the heating mode of the stove burner 10. Specifically, the control unit 50 changes the alternating heating mode to a heating mode in which the second heating H2 and the fourth heating H4 are performed alternately (see Figures 18, 19, and 20). The fourth heating H4 is a mode in which heating is performed for the same period as the first period t1 using the heating force (h0, hr, or hx) after the change in S42, S47, or S46.

[0075] Furthermore, in the second heating mode processing, the process in S90 is executed following the process in S56 described above. In S90, the control unit 50 changes the heating mode of the stove burner 10. Specifically, the control unit 50 changes the alternating heating mode to a heating mode in which the first heating H1 and the fifth heating H5 are performed alternately (see Figure 21). The fifth heating H5 is a mode in which heating is performed for the same period as the second period t2 using the heating force (hx) changed in S52 described above.

[0076] In S82, following S80 or S90, the control unit 50 determines whether the temperature Tx of the object to be heated exceeds a predetermined reference temperature Th. S82 is the same process as S72 above. If it is determined that the temperature Tx of the object to be heated exceeds the reference temperature Th (YES in S82), the process proceeds to S84. If it is not determined that the temperature Tx of the object to be heated exceeds the reference temperature Th (NO in S82), the process waits.

[0077] In S84, the control unit 50 returns the heating mode of the stove burner 10 to its original state. Specifically, the control unit 50 changes the alternating heating mode to a heating mode in which the first heating H1 and the second heating H2 are performed alternately (see Figures 18, 19, 20, and 21). After that, the process returns to S16.

[0078] (effect) The heating appliance 2 of the embodiment has been described above. As is clear from the above description, when the control unit 50 of the heating appliance 2 receives an instruction from the stove operation unit 12 to change the heating power hx to a higher heating power h0 than the heating power h0 at the start of heating during the execution of the first heating H1, the control unit 50 of the heating appliance 2 changes the heating power of the stove burner 10 to the heating power h0 at the start of heating (see S20, S22 in Figure 4 and Figure 6). With this configuration, while increasing the heating power of the stove burner 10, the upper limit of the changed heating power is limited to the heating power h0 at the start of heating, thereby preventing overheating of the object to be heated. Therefore, the object to be heated can be heated appropriately.

[0079] Furthermore, during the execution of the first heating H1, if the control unit 50 receives an instruction from the stove operation unit 12 to change the heating power hx to a level greater than the reference heating power hr and less than the heating power h0 at the start of heating, the control unit 50 changes the heating power of the stove burner 10 to the reference heating power hr (see S20, S24, S25, S27 in Figure 4 and Figure 7). With this configuration, while increasing the heating power of the stove burner 10, the upper limit of the changed heating power is limited to the reference heating power hr, thereby preventing overheating of the object to be heated. Therefore, the object to be heated can be heated appropriately.

[0080] Furthermore, if the control unit 50 receives an instruction from the stove operation unit 12 to change the heating force hx to a force greater than the first heating force h1 and less than the reference heating force hr while the first heating force H1 is being performed, the control unit 50 changes the heating force of the stove burner 10 to the instructed heating force hx (see S20, S24, S25, S26 in Figure 4 and Figure 8). With this configuration, the heating force of the stove burner 10 is changed to the instructed heating force hx, so the object to be heated can be heated appropriately.

[0081] Furthermore, the control unit 50 changes the heating power of the stove burner 10 during the execution of the first heating H1, maintains the changed heating power until the end of the first period t1, and then executes the second heating H2 (see S30, S32 in Figure 4, Figures 6, 7, and 8). With this configuration, the changed heating power is maintained until the end of the first period t1, so the object to be heated can be sufficiently heated. In addition, it is possible to prevent the object to be heated from being overheated after the end of the first period t1 has arrived. Since the heating power is changed only in the step in which the instruction to change the heating power is received, it is possible to prevent the object to be heated from being overheated.

[0082] Furthermore, if the control unit 50 receives an instruction from the stove operation unit 12 to change the heating force hx to a force greater than the second heating force h2 and less than the first heating force h1 while the second heating force H2 is being executed, the control unit 50 changes the heating force of the stove burner 10 to the instructed heating force hx (see S44, S50, S52 in Figure 5 and Figure 12). With this configuration, while increasing the heating force of the stove burner 10, it is possible to suppress overheating of the object to be heated by limiting the upper limit of the changed heating force to the first heating force h1. Therefore, the object to be heated can be heated appropriately.

[0083] Furthermore, the control unit 50 changes the heating power of the stove burner 10 during the execution of the second heating H2, maintains the changed heating power until the end of the second period t2, and then executes the first heating H1 (see S56, S58 in Figure 5 and Figure 12). With this configuration, the changed heating power is maintained until the end of the second period t2, so the object to be heated can be sufficiently heated. In addition, it is possible to prevent the object to be heated from being overheated after the end of the second period t2 has arrived. Since the heating power is changed only in the step in which the instruction to change the heating power is received, it is possible to prevent the object to be heated from being overheated.

[0084] Furthermore, if the control unit 50 receives an instruction from the stove operation unit 12 to change the heating power to a higher level than the first heating power h1 while the second heating H2 is being performed, it changes the heating power of the stove burner 10 to a higher level than the first heating power h1 and maintains the changed heating power for the same period as the first period t1 (see S40, S42, S44, S45, S46, S47, S48 in Figure 5, Figures 9, 10, and 11). With this configuration, while increasing the heating power of the stove burner 10, the duration of the changed heating power is limited to the same period as the first period t1, thereby preventing overheating of the object to be heated. Therefore, the object to be heated can be heated appropriately.

[0085] If the control unit 50 receives an instruction from the stove operation unit 12 to change the heating force hx to a greater than the heating force h0 at the start of heating while the second heating H2 is being performed, the control unit 50 changes the heating force of the stove burner 10 to the heating force h0 at the start of heating and maintains the changed heating force for the same period as the first period t1 (see S40, S42, S48 in Figure 5 and Figure 9). With this configuration, the heating force of the stove burner 10 is limited to the heating force h0 at the start of heating, so it is possible to prevent overheating of the object to be heated.

[0086] During the execution of the second heating H2, if the control unit 50 receives an instruction from the stove operation unit 12 to change the heating force hx to a value greater than the reference heating force hr and less than the heating force h0 at the start of heating, the control unit 50 changes the heating force of the stove burner 10 to the reference heating force hr and maintains the changed heating force for the same period as the first period t1 (see S40, S44, S45, S47, S48 in Figure 5 and Figure 10). With this configuration, since the heating force of the stove burner 10 is limited to the reference heating force hr, it is possible to suppress overheating of the object to be heated.

[0087] During the execution of the second heating H2, if the control unit 50 receives an instruction from the stove operation unit 12 to change the heating force hx to a heating force greater than the first heating force h1 and less than the reference heating force hr, the control unit 50 changes the heating force of the stove burner 10 to the instructed heating force hx and maintains the changed heating force for the same period as the first period t1 (see S40, S44, S45, S46, S48 in Figure 5 and Figure 11). With this configuration, the heating force of the stove burner 10 is changed to the instructed heating force, so the object to be heated can be heated appropriately.

[0088] Furthermore, if the control unit 50 receives an instruction from the stove operation unit 12 to change the heating force hx to a greater than the heating force h0 at the start of heating while the first heating H1 is being performed, the control unit 50 changes the heating mode of the stove burner 10 to a heating mode in which a third heating H3 lasting for the same period as the first period t1 with the heating force h0 at the start of heating, and a second heating H2 are performed alternately (see S20, S22, S70 in Figure 13 and Figure 15). With this configuration, while increasing the heating force of the stove burner 10, the upper limit of the changed heating force is limited to the heating force h0 at the start of heating, thereby preventing overheating of the object to be heated. Therefore, the object to be heated can be heated appropriately. Also, since the changed heating force h0 and the second heating force h2 are repeated, the object to be heated can be heated more sufficiently than if the first heating force h1 and the second heating force h2 were repeated.

[0089] Furthermore, if the control unit 50 receives an instruction from the stove operation unit 12 to change the heating force hx to one greater than the reference heating force hr and less than the heating force h0 at the start of heating while the first heating H1 is being performed, the control unit 50 changes the heating mode of the stove burner 10 to a heating mode in which a third heating H3 lasting the same period as the first period t1 at the reference heating force hr and a second heating H2 are performed alternately (see S20, S24, S25, S27, S70 in Figure 13 and Figure 16). With this configuration, by limiting the upper limit of the changed heating force to the reference heating force hr, it is possible to suppress overheating of the object to be heated. Also, since the changed heating force hr and the second heating force h2 are repeated, the object to be heated can be heated more sufficiently than if the first heating force h1 and the second heating force h2 were repeated.

[0090] Furthermore, if the control unit 50 receives an instruction from the stove operation unit 12 to change the heating force hx to one greater than the first heating force h1 and less than the reference heating force hr while the first heating H1 is being performed, the control unit 50 changes the heating mode of the stove burner 10 to a heating mode in which a third heating H3 lasting for the same period as the first period t1 at the instructed heating force hx and a second heating H2 are performed alternately (see S20, S24, S25, S26, S70 in Figure 13 and Figure 17). With this configuration, the heating force of the stove burner 10 is changed to the instructed heating force hx, so the object to be heated can be heated appropriately. Also, since the changed heating force hx and the second heating force h2 are repeated, the object to be heated can be heated more sufficiently than if the first heating force h1 and the second heating force h2 were repeated.

[0091] Furthermore, if the control unit 50 determines, based on the temperature detected by the temperature sensor 16, that the temperature Tx of the object to be heated exceeds the reference temperature Th after changing the heating mode of the stove burner 10, it returns the heating mode of the stove burner 10 to a heating mode in which the first heating H1 and the second heating H2 are performed alternately (see S72, S74 in Figure 13, Figures 15, 16, and 17). With this configuration, the heating mode of the stove burner 10 returns to its original state when it is determined that the temperature Tx of the object to be heated exceeds the reference temperature Th, thus preventing overheating of the object to be heated.

[0092] Furthermore, if the control unit 50 receives an instruction from the stove operation unit 12 to change to a heating force greater than the first heating force h1 while the second heating H2 is being executed, the control unit 50 changes the heating mode of the stove burner 10 to a heating mode in which a fourth heating H4, which lasts for the same period as the first period t1 with a heating force greater than the first heating force h1, and the second heating H2 are performed alternately (see S40, S44, S80 in Figure 14, Figures 18, 19, and 20). With this configuration, while increasing the heating force of the stove burner 10, the duration of the changed heating force is limited to the same period as the first period t1, thereby preventing overheating of the object to be heated. Therefore, the object to be heated can be heated appropriately. In addition, since the changed heating force and the second heating force h2 are repeated, the object to be heated can be heated more sufficiently than if the first heating force h1 and the second heating force h2 were repeated.

[0093] If the control unit 50 receives an instruction from the stove operation unit 12 to change the heating force hx to a greater than the heating force h0 at the start of heating while the second heating H2 is being performed, the control unit 50 changes the heating mode of the stove burner 10 to a heating mode in which the fourth heating H4, which lasts for the same period as the first period t1 with the heating force h0 at the start of heating, and the second heating H2 are performed alternately (see S40, S80 in Figure 14 and Figure 18). With this configuration, the heating force of the stove burner 10 is limited to the heating force h0 at the start of heating, so it is possible to prevent overheating of the object to be heated. In addition, since the changed heating force h0 and the second heating force h2 are repeated, the object to be heated can be heated more sufficiently than if the first heating force h1 and the second heating force h2 were repeated.

[0094] When the control unit 50 receives an instruction from the stove operation unit 12 to change the heating force hx to one greater than the reference heating force hr and less than the heating force h0 at the start of heating while the second heating H2 is being performed, the control unit 50 changes the heating mode of the stove burner 10 to a heating mode in which the fourth heating H4, which lasts for the same period as the first period t1 at the reference heating force hr, and the second heating H2 are performed alternately (see S45, S80 in Figure 14, and Figure 19). With this configuration, the heating force of the stove burner 10 is limited to the reference heating force hr, so it is possible to prevent overheating of the object to be heated. In addition, since the changed heating force hr and the second heating force h2 are repeated, the object to be heated can be heated more sufficiently than if the first heating force h1 and the second heating force h2 were repeated.

[0095] If the control unit 50 receives an instruction from the stove operation unit 12 to change the heating force hx to one that is greater than the first heating force h1 and less than the heating force h0 at the start of heating while the second heating H2 is being performed, the control unit 50 changes the heating mode of the stove burner 10 to a heating mode in which the fourth heating H4, which lasts for the same period as the first period t1, and the second heating H2 are performed alternately (see S44, S80 in Figure 14 and Figure 20). With this configuration, the heating force of the stove burner 10 is changed to the instructed heating force hx, so the object to be heated can be heated appropriately. In addition, since the changed heating force hx and the second heating force h2 are repeated, the object to be heated can be heated more sufficiently than if the first heating force h1 and the second heating force h2 were repeated.

[0096] Furthermore, if the control unit 50 determines, based on the temperature detected by the temperature sensor 16, that the temperature Tx of the object to be heated exceeds the reference temperature Th after changing the heating mode of the stove burner 10, it returns the heating mode of the stove burner 10 to a heating mode in which the first heating H1 and the second heating H2 are performed alternately (see S82, S84 in Figure 14, Figures 18, 19, and 20). With this configuration, the heating mode of the stove burner 10 returns to its original state when it is determined that the temperature Tx of the object to be heated exceeds the reference temperature Th, thus preventing overheating of the object to be heated.

[0097] Furthermore, if the control unit 50 receives an instruction from the stove operation unit 12 to change the heating force hx to one that is greater than the second heating force h2 and less than the first heating force h1 while the second heating force H2 is being executed, the control unit 50 changes the heating mode of the stove burner 10 to a heating mode in which the fifth heating H5, which lasts for the same period as the second period t2 with the instructed heating force hx, and the first heating H1 are performed alternately (see S44, S50, S90 in Figure 14 and Figure 21). With this configuration, while increasing the heating force of the stove burner 10, the upper limit of the changed heating force is limited to the first heating force h1, thereby preventing overheating of the object to be heated. Therefore, the object to be heated can be heated appropriately. Also, since the changed heating force hx and the first heating force h1 are repeated, the object to be heated can be heated more sufficiently than if the first heating force h1 and the second heating force h2 were repeated.

[0098] Furthermore, if the control unit 50 determines, after changing the heating mode of the stove burner 10, that the temperature Tx of the object to be heated exceeds the reference temperature Th based on the temperature detected by the temperature sensor 16, it returns the heating mode of the stove burner 10 to a heating mode in which the first heating H1 and the second heating H2 are performed alternately (see S82, S84 in Figure 14 and Figure 21).

[0099] According to the above configuration, for example, in simmered dishes, the broth can be brought to a boil quickly while preventing the broth from boiling over and the ingredients from burning. Furthermore, even if the user temporarily requires high heating power, sufficient heating power can be achieved, thus preventing undercooked ingredients and extended cooking times, and thus alleviating the resulting user dissatisfaction. In addition, cooking time can be shortened.

[0100] Although each embodiment has been described in detail above, these are merely illustrative examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes to the specific examples illustrated above.

[0101] (Variation 1) The "heating appliance" is not limited to a gas-burning built-in stovetop; for example, an induction cooktop may also be used.

[0102] (Modification 2) The "temperature detection unit" may be a thermograph that photographs the object to be heated from the outside of the cooking appliance 2. Alternatively, an infrared sensor that detects the temperature of the cooking container (non-contact) may be used as the temperature sensor 16, and time-series data of the temperature measured by the infrared sensor may be used.

[0103] (Modification 3) The first heating mode and the second heating mode may be a simmering mode for cooking simmered dishes or a noodle boiling mode for boiling noodles.

[0104] The technical elements described herein or in the drawings demonstrate technical usefulness individually or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technologies illustrated herein or in the drawings can achieve multiple objectives simultaneously, and achieving even one of these objectives constitutes technical usefulness in itself. [Explanation of symbols]

[0105] 2: Cooking appliance, 4: Main unit, 4a: Front, 6: Top plate, 8: Grill, 10: Cooktop burner, 12: Cooktop control panel, 14: Cooktop panel, 14a: Display unit, 14b: Control unit, 16: Temperature sensor, 50: Control unit, 52: Memory, 54: Timer, 60: Program

Claims

1. A heating unit that heats the object to be heated, A change instruction unit that receives instructions to change the heating power of the heating unit, The system comprises a control unit for controlling the heating unit, The heating unit alternately performs a first heating for a first period with a first heating force smaller than the heating force at the start of heating, and a second heating for a second period with a second heating force smaller than the first heating force, A cooking appliance in which, during the execution of the first heating, the control unit changes the heating power of the heating unit to the reference heating power, which is a predetermined heating power greater than the first heating power and less than the heating power at the start of heating, when the change instruction unit receives an instruction to change to a heating power greater than the reference heating power and less than the heating power at the start of heating.

2. The cooking appliance according to claim 1, wherein the control unit, during the execution of the first heating, changes the heating power of the heating unit to the instructed heating power when the change instruction unit receives an instruction to change the heating power to a heating power greater than the first heating power and less than the reference heating power.

3. A heating unit that heats the object to be heated, A change instruction unit that receives instructions to change the heating power of the heating unit, The system comprises a control unit for controlling the heating unit, The heating unit alternately performs a first heating for a first period with a first heating force smaller than the heating force at the start of heating, and a second heating for a second period with a second heating force smaller than the first heating force, A cooking appliance in which, when the control unit receives an instruction from the change instruction unit to change the heating force of the heating unit to the heating force at the start of heating during the execution of the first heating, the control unit changes the heating force of the heating unit to the heating force at the start of heating.

4. The cooking appliance according to any one of claims 1 to 3, wherein the control unit changes the heating power of the heating unit during the execution of the first heating, maintains the changed heating power until the end of the first period, and then performs the second heating.

5. A heating unit that heats the object to be heated, A change instruction unit that receives instructions to change the heating power of the heating unit, The system comprises a control unit for controlling the heating unit, The heating unit alternately performs a first heating for a first period with a first heating force smaller than the heating force at the start of heating, and a second heating for a second period with a second heating force smaller than the first heating force, A cooking appliance in which, during the execution of the second heating, the control unit changes the heating power of the heating unit to the instructed heating power when the change instruction unit receives an instruction to change the heating power to a heating power greater than the second heating power and less than the first heating power.

6. The cooking appliance according to claim 5, wherein the control unit changes the heating power of the heating unit during the execution of the second heating, maintains the changed heating power until the end of the second period, and then performs the first heating.

7. A heating unit that heats the object to be heated, A change instruction unit that receives instructions to change the heating power of the heating unit, The system comprises a control unit for controlling the heating unit, The heating unit alternately performs a first heating for a first period with a first heating force smaller than the heating force at the start of heating, and a second heating for a second period with a second heating force smaller than the first heating force, A cooking appliance comprising a control unit that, when an instruction to change the heating force to a greater than the first heating force is received by the change instruction unit during the execution of the second heating, changes the heating force of the heating unit to a greater than the first heating force and maintains the changed heating force for the same period as the first period.

8. The heating appliance according to claim 7, wherein, during the execution of the second heating, the control unit changes the heating power of the heating unit to the reference heating power, which is a predetermined heating power greater than the first heating power and less than the heating power at the start of heating, when an instruction to change to a heating power greater than the reference heating power and less than the heating power at the start of heating is received by the change instruction unit, and maintains the changed heating power for the same period as the first period.

9. The heating appliance according to claim 7, wherein, during the execution of the second heating, the control unit, with a predetermined heating force greater than the first heating force and less than the heating force at the start of heating as the reference heating force, receives an instruction from the change instruction unit to change the heating force of the heating unit to the instructed heating force and maintains the changed heating force for the same period as the first period.

10. The cooking appliance according to claim 7, wherein, during the execution of the second heating, if the control unit receives an instruction from the change instruction unit to change the heating force to a greater than the heating force at the start of heating, the control unit changes the heating force of the heating unit to the heating force at the start of heating and maintains the changed heating force for the same period as the first period.

11. A heating unit that heats the object to be heated, A change instruction unit that receives instructions to change the heating power of the heating unit, The system comprises a control unit for controlling the heating unit, The heating unit alternately performs a first heating for a first period with a first heating force smaller than the heating force at the start of heating, and a second heating for a second period with a second heating force smaller than the first heating force, A cooking appliance, wherein the control unit, during the execution of the first heating, uses a predetermined heating force that is greater than the first heating force and less than the heating force at the start of heating as the reference heating force, and when the change instruction unit receives an instruction to change to a heating force that is greater than the reference heating force and less than the heating force at the start of heating, the control unit changes the heating mode of the heating unit to a heating mode in which heating for the same period as the first period at the reference heating force and second heating are performed alternately.

12. The cooking appliance according to claim 11, wherein, during the execution of the first heating, the control unit receives an instruction from the change instruction unit to change the heating force to one that is greater than the first heating force and less than the reference heating force, and changes the heating mode of the heating unit to a heating mode in which heating for the same period as the first period at the instructed heating force and second heating are performed alternately.

13. A heating unit that heats the object to be heated, A change instruction unit that receives instructions to change the heating power of the heating unit, The system comprises a control unit for controlling the heating unit, The heating unit alternately performs a first heating for a first period with a first heating force smaller than the heating force at the start of heating, and a second heating for a second period with a second heating force smaller than the first heating force, A cooking appliance in which, when the control unit receives an instruction from the change instruction unit to change the heating force to a greater than the heating force at the start of heating while the first heating is being performed, the heating mode of the heating unit is changed to a heating mode in which heating for the same period as the first period with the heating force at the start of heating and second heating are performed alternately.

14. A heating unit that heats the object to be heated, A change instruction unit that receives instructions to change the heating power of the heating unit, The system comprises a control unit for controlling the heating unit, The heating unit alternately performs a first heating for a first period with a first heating force smaller than the heating force at the start of heating, and a second heating for a second period with a second heating force smaller than the first heating force, A cooking appliance in which, when the control unit receives an instruction from the change instruction unit to change the heating force to one that is greater than the second heating force and less than the first heating force during the execution of the second heating, the control unit changes the heating mode of the heating unit to a heating mode in which heating for the same period as the second period at the instructed heating force and the first heating are performed alternately.

15. A heating unit that heats the object to be heated, A change instruction unit that receives instructions to change the heating power of the heating unit, The system comprises a control unit for controlling the heating unit, The heating unit alternately performs a first heating for a first period with a first heating force smaller than the heating force at the start of heating, and a second heating for a second period with a second heating force smaller than the first heating force, A cooking appliance comprising a control unit that, when an instruction to change to a heating force greater than the first heating force is received by the change instruction unit during the execution of the second heating, changes the heating mode of the heating unit to a heating mode in which heating for the same period as the first period with a heating force greater than the first heating force and the second heating are performed alternately.

16. The cooking appliance according to claim 15, wherein, during the execution of the second heating, the control unit, with a predetermined heating force greater than the first heating force and less than the heating force at the start of heating as the reference heating force, receives an instruction from the change instruction unit to change the heating mode of the heating unit to a heating mode in which heating for the same period as the first period at the reference heating force and the second heating are performed alternately.

17. The cooking appliance according to claim 15, wherein, during the execution of the second heating, the control unit, when an instruction is received by the change instruction unit to change to a heating force that is greater than the first heating force and less than the reference heating force, with a predetermined heating force that is greater than the first heating force and less than the heating force at the start of heating being used as the reference heating force, changes the heating mode of the heating unit to a heating mode in which heating for the same period as the first period at the instructed heating force and the second heating are performed alternately.

18. The cooking appliance according to claim 15, wherein, during the execution of the second heating, if the control unit receives an instruction from the change instruction unit to change to a heating force greater than the heating force at the start of the heating, the heating mode of the heating unit is changed to a heating mode in which heating for the same period as the first period at the heating force at the start of the heating and the second heating are performed alternately.

19. The system further includes a temperature detection unit for detecting the temperature of the object to be heated, The cooking appliance according to any one of claims 11 to 18, wherein the control unit, after changing the heating mode of the heating unit, determines based on the temperature detected by the temperature detection unit that the temperature of the object to be heated exceeds a predetermined reference temperature, and then returns the heating mode of the heating unit to a heating mode in which the first heating and the second heating are performed alternately.

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