JPH09251891A - Heating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating apparatus capable of efficiently calculating the driving condition of a cooling fan corresponding to a variety of heating modes and menus and restricting complication of a control algorithm for driving the cooling fan and reducing work during updating of the driving condition. SOLUTION: A heating mode table for storing data for each heating mode to be associated with heating mode and a correction data table for storing correction data are stored in EEPROM16, and if a key input circuit 14 gives a heating instruction a control unit 11 calculates the driving start time of a cooling fan 15 corresponding to the heating mode or menu based on these tables and controls a fan driving circuit 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device used as a cooking device for heating an object to be heated such as a microwave oven,
In particular, the present invention relates to a heating device for efficiently driving and controlling a cooling fan in accordance with a heating mode such as an oven function or a grill function, or a menu provided corresponding to an object to be heated.

[0002]

2. Description of the Related Art In heating equipment represented by a microwave oven,
Since an object such as food is heated by a heat source such as a heater, there is a possibility that abnormalities may occur in electrical components and structural parts due to a rise in temperature inside the equipment due to this heating.

For this reason, a conventional heating device is provided with a cooling fan for taking in outside air and cooling the inside of the device and a temperature sensor inside the device, and adopts a technique of driving the cooling fan when a certain temperature is reached. Often.

However, if the cooling fan is driven indiscriminately, the temperature inside the equipment, which should be raised in temperature, decreases conversely, so that the rate of temperature rise inside the equipment may be delayed or the set temperature may not be reached. .

In addition, although a thermistor which detects the temperature and changes the resistance value is often used, at the initial stage of heating,
Although the temperature of this thermistor shows almost the same value as the component temperature, the temperature distribution inside the equipment is not uniform, so the temperature of the thermistor will differ from the temperature of the electrical components as heating progresses, and the accurate component temperature will be Often cannot be detected.

Therefore, as a measure for protecting the parts of the heating equipment, the time from the start of heating to the driving of the cooling fan is often controlled.

For example, Japanese Unexamined Patent Publication No. 5-5529 discloses that
The first for measuring the time after the start of energization of the resistance heater
Provided is a time measuring means and a second time measuring means for measuring the time after the energization of the resistance heating heater is stopped, and the energization is resumed when the energization of the resistance heating heater is continued for a predetermined time or before the elapse of a predetermined time after the end of energization. In this case, a heating cooker configured to drive and control a cooling fan is disclosed.

That is, in this conventional technique, the time during which the resistance heater can be continuously energized and the minimum time interval until the energization is restarted are set in advance, and when the measured time exceeds these times. It drives a cooling fan.

[0009]

However, since the conditions for heating the object are different each time, in order to apply this conventional technique, it is necessary to prepare various data that can correspond to the various conditions in advance.

For example, in a heating mode in which a heating device heats an object, an oven mode in which an upper heater and a lower heater are used to uniformly heat the object, and a maximum heating power of the upper heater is used to heat the object. There are various types such as grill mode.

Therefore, in order to support such a mode, it is necessary to prepare driving conditions of the cooling fan corresponding to the set temperature or the heating time for each mode in advance.

For example, when the grill is heated at a set temperature of 120 ° C. for 5 minutes and the cooling fan is driven 5 minutes after the temperature reaches 120 ° C., “heating mode = grill”, “set temperature” = 120 ° C "and" heating time = 5 minutes "
Corresponding to the three heating conditions, the driving condition of the cooling fan is determined such that “the cooling fan is driven 5 minutes after reaching 120 ° C.”.

The driving condition of the cooling fan fluctuates when any one of the heating mode, the set temperature and the heating time changes, so that the conventional heating device has a cooling fan with different heating conditions. It was necessary to give the driving conditions individually.

Therefore, in the conventional heating device, not only the amount of data of the driving condition to be held becomes huge, but also the control algorithm for driving the cooling fan becomes complicated, and the driving condition is updated. It was a cause of enormous effort.

In particular, recent microwave ovens are often provided with various one-touch menus such as "cake", "gratin" and "grilled fish", and the driving conditions of the cooling fan corresponding to such menus are also given in advance. The amount of data surrounding this cooling fan is further increasing because of the necessity.

Therefore, in the present invention, the above problems are solved, the driving conditions of the cooling fan are efficiently calculated corresponding to various heating modes and various menus, and the control algorithm for driving the cooling fan is prevented from becoming complicated. An object of the present invention is to provide a heating device suitable as a heating cooker capable of reducing the labor when updating the driving conditions.

[0017]

In order to achieve the above object, the first invention is a heating section for applying heating energy to an object to be heated arranged in a refrigerator in a heating mode instructed, and the heating section. In a heating device having a cooling fan that supplies the outside air sucked in as cooling air,
A table that associates the heating mode that the heating unit can support and the drive data of the cooling fan that corresponds to each heating mode, and the heating mode that heats the object to be heated is instructed, based on the table. A control unit that specifies drive data corresponding to the heating mode and controls the drive of the cooling fan based on the specified drive data.

A second aspect of the present invention is a heating unit for applying heating energy to an object to be heated arranged in a refrigerator in a heating mode instructed, and external air sucked to the heating unit as cooling air. In a heating device having a cooling fan to be supplied and a temperature sensor for measuring the temperature in the refrigerator,
A table that associates the heating mode that the heating unit can correspond with the driving data of the cooling fan that corresponds to each heating mode, and stores the temperature inside the refrigerator and the correction data that corresponds to the temperature in association with each other; When a heating mode for heating an object to be heated is designated, drive data corresponding to the heating mode is specified based on the table, and a basic drive time is calculated based on the specified drive data. Means and second calculation means for extracting correction data corresponding to the temperature inside the refrigerator measured by the temperature sensor from the table, and calculating a drive start time in which the basic drive time is corrected based on the correction data, And a control unit that drives and controls the cooling fan based on the drive start time calculated by the second calculation unit.

In a third aspect of the invention, the second calculating means retrieves from the table correction data corresponding to the temperature inside the chamber measured by the temperature sensor at a predetermined time interval, and the heating unit receives the correction data. It is characterized in that the basic driving time is corrected based on the correction data while responding to the progress of heating the heating object.

In the first aspect of the invention, a table is prepared in advance in which the heating modes that the heating unit can support and the drive data of the cooling fan corresponding to each heating mode are associated with each other, and the object to be heated is heated. When the heating mode is instructed, the control means specifies the drive data corresponding to the heating mode based on the table, and drives and controls the cooling fan based on the specified drive data.

Therefore, the driving condition of the cooling fan corresponding to each heating mode can be efficiently calculated without individually storing the driving start time corresponding to the heating temperature and the heating time for each heating mode.

Further, in the second aspect of the present invention, the heating mode that the heating unit can correspond to and the driving data of the cooling fan that corresponds to each heating mode are associated with each other, and the temperature inside the refrigerator and the correction data corresponding to the temperature are associated with each other. A table to be additionally stored is prepared in advance, and when the heating mode for heating the object to be heated is instructed, the first calculating means specifies the drive data corresponding to the heating mode based on this table. Then, the basic drive time is calculated based on the specified drive data. Then, the second calculating means retrieves the correction data corresponding to the temperature inside the refrigerator measured by the temperature sensor from the table, calculates the drive start time in which the basic drive time is corrected based on the correction data, and controls it. The means drives and controls the cooling fan based on the drive start time.

Therefore, it is possible to correct the basic drive time based on the initial temperature in the refrigerator and the temperature change in the refrigerator at the start of heating, and set an appropriate drive start time.

Further, in the third invention, the second calculating means fetches the correction data corresponding to the temperature in the refrigerator measured by the temperature sensor at a predetermined time interval from the table, and the heating unit heats the object. The basic driving time is corrected based on the correction data while responding to the progress of heating the object.

Therefore, it is possible to correct the basic drive time based on the temperature inside the chamber which has risen after the start of heating, and set an appropriate drive start time.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In addition, this Embodiment has shown the case where the heating apparatus of this invention is applied to a microwave oven as an example of a cooking device.

FIG. 2 is a diagram showing an outline of the microwave oven used in the first embodiment. As shown in FIG.
The microwave oven 10 includes an upper heater 21 and a lower heater 22.
The thermistor 23, the magnetron 24, the cooling fan 25, the electrical components 26, and the operation panel 27.

Here, the upper heater 21 and the lower heater 22
Is a heat source that applies heating energy to the food to be heated, and both heaters are used together when the microwave oven 10 is used as an oven.
When 0 is used as a grill, only the upper heater 21 is used.

The thermistor 23 is a variable resistor that changes its resistance value in accordance with the temperature inside the oven to keep the temperature inside the oven constant, and the magnetron 24 is used for food when a microwave oven is used as a microwave oven. It is a microwave oscillating tube that gives a magnetic field to it.

The cooling fan 25 is a fan that applies outside air sucked through a duct (not shown) to the inside of the oven as cooling air, and is drive-controlled in accordance with the input heating mode and the selected menu. .

The electrical components 26 are various electronic components mounted on the microwave oven 10. The operation panel 27 has a button for directly setting a heating temperature and a heating time, as well as foods such as cake, gratin and grilled fish. A corresponding one-touch menu is provided.

FIG. 2B is a diagram showing an outline of the electronic circuit of the microwave oven 10. As shown, the microwave oven 10 has an upper heater 21, a lower heater 22, a cooling fan 25 and a magnetron 24. Are connected in parallel.

The upper heater 21, the lower heater 22, the cooling fan 25 and the magnetron 24 are driven by connecting and controlling relays 28a, 28b, 28c and 28d, respectively.

For example, when the microwave oven 10 is used as an oven, the relays 28a and 27b are turned on, heating energy is applied to food by using both the upper heater 21 and the lower heater 22, and after a predetermined time elapses, the relays are relayed. Two
8c is turned on to drive the cooling fan 25.

When the microwave oven 10 is used as a grill, the relay 28a is turned on to apply heating energy to food by using the upper heater, and after a predetermined time elapses, the relay 28c is turned on to drive the cooling fan 25. To do.

Next, the structure of the microwave oven 10 will be specifically described. FIG. 1 is a block diagram showing the configuration of the microwave oven 10. The microwave oven 10 is configured to efficiently calculate the drive start time of the cooling fan corresponding to various heating modes and menus, and suppress the temperature rise of electric components and structural parts provided inside the microwave oven.
Specifically, the drive start time of the cooling fan 25 is calculated based on the data uniquely determined according to the heating mode and the data determined based on the temperature inside the oven.

That is, the microwave oven 10 according to the present invention.
Does not hold the driving start time of the cooling fan corresponding to the set temperature and the heating time individually for each heating mode and menu, but corrects the basic parameter based on the temperature condition etc. The drive start time is calculated.

As shown in FIG. 1, this microwave oven 10
Is a control unit 11, a temperature sensor circuit 12, and a power supply circuit 1.
3, key input circuit 14, reset circuit 15, EE
It is composed of a PROM 16, a relay drive circuit 17, a fan drive circuit 18, and a display circuit 18.

The control unit 11 is a control unit that controls the entire microwave oven 10 including drive control of the cooling fan 25.
It is composed of a microprocessor having a program memory and the like.

Then, the control section 11 becomes the initial state when receiving the reset signal generated by the reset circuit 15, and shifts to the heating state mode when receiving the heating start key data from the key input circuit 14. Then, the relay drive circuit 17 is instructed to heat.

Further, the control unit 11 controls the heating amount based on the temperature data received from the temperature sensor circuit 12, and when a predetermined time has elapsed from the start of heating or the temperature inside the oven rises above a predetermined temperature. In that case, the fan drive circuit 19 is instructed to drive the cooling fan 25.

Specifically, when the heating mode is designated by the key input circuit 14, the data a corresponding to the heating mode and the constant α common to each heating mode are integrated to obtain the basic drive start time (Ta). Ta = a × α is calculated, and the initial temperature correction data b corresponding to the initial temperature is subtracted from the basic drive start time (Ta) to calculate the drive start time (Tb) Tb = Ta−b. Then, the fan driving circuit 19 is instructed to start driving the cooling fan 25 at the time when the driving start time (Tb) elapses after the heating is started.

In this data a, the basic drive start time T after the heating of the oven chamber at room temperature is started.
The time during which the temperature can be cooled to a predetermined temperature is set up to a.

The temperature sensor circuit 12 is a temperature sensor that detects the temperature inside the oven and outputs it to the control unit 11.
The power supply circuit 13 supplies power to each part such as the upper heater 21, the lower heater 22, and the cooling fan 25.

The key input circuit 14 is for inputting necessary keys for heating. Specifically, the heating mode, the set temperature and the heating time can be manually set, and the heating time and the like can be automatically set using a menu. It can also be set.

The reset circuit 15 is a circuit for generating a reset signal to the control section 11 when the power is turned on, and the EEPROM 16 is a heating mode table holding data corresponding to the heating mode for each heating mode. When,
A correction data table holding correction data corresponding to the oven internal temperature is stored for each oven internal temperature.

The relay drive circuit 17 is a circuit for driving and controlling the relays 28a, 28b and 28d corresponding to the upper heater 21, the lower heater 22 and the magnetron 24 in response to an instruction from the controller 11, and the fan drive circuit 18 Is a relay 2 corresponding to the cooling fan in response to an instruction from the control unit 11.
8c is a circuit for driving and controlling.

The display circuit 18 is a circuit for displaying a waiting time until the heating of the food placed in the oven is completed.

As described above, in the microwave oven 10, the drive start time (Tb) is calculated based on the data in the heating mode table and the correction data in the correction data table,
The drive control of the cooling fan 25 is performed based on the calculated drive start time (Tb).

Next, the control procedure of the cooling fan 25 performed by the control unit 11 shown in FIG. 1 will be described.

FIG. 3 is a flowchart showing the control procedure of the cooling fan 25 performed by the control unit 11 shown in FIG. As shown in FIG. 3, when a key input for heating is performed from the key input circuit 14, heating in the oven chamber is started (step 302), and the temperature sensor circuit 12 is used to initialize the oven chamber. Measure temperature (step 30)
3).

Then, the data is taken out from the heating mode table stored in the EEPROM 16 (step 30
1, 304), the basic drive start time of the cooling fan 25 (T
After calculating a) (step 305), the basic drive start time is corrected using the correction data in the correction data table to obtain the drive start time (Tb) (step 306).

After the start of heating, the drive start time (T
When b) has elapsed, the cooling fan 25 is driven to start cooling (steps 307 and 308). The relay drive circuit 17 turns on the heating relay 28a of the upper heater 21 and / or the heating relay 28b of the lower heater 22 regardless of whether cooling is performed (step 309).

Next, the heating mode table and the correction data table stored in the EEPROM 16 shown in FIG. 1 will be described.

FIG. 4 is a diagram showing an example of the heating mode table and the correction data table stored in the EEPROM 16 shown in FIG. As shown in FIG. 4 (a), the heating mode table 40 is used for a period from the start of heating the inside of the oven in the normal temperature state to the elapse of the basic drive start time (Ta) according to the type of the heating mode. Set the time for cooling to a predetermined temperature respectively.

That is, in the figure, data a1 is set corresponding to the heating mode "Oven", data a2 is set corresponding to the heating mode "Grill", and data a2 is set corresponding to the heating mode "Toaster". Since a3 is set, if the inside of the oven is at room temperature at the start of heating and the heating mode is "oven", α1 times a1 times a constant α will start the basic drive. It is time Ta.

However, when the oven is continuously used, the temperature inside the oven chamber has already risen, so it is necessary to advance the drive timing of the cooling fan 25. Therefore, the correction data is held in the correction data table 41.

As shown in FIG. 4B, this correction data table 41 holds correction data for correcting the basic drive start time (Ta) corresponding to the temperature inside the oven at the start of heating. are doing.

That is, in the figure, the correction data b1 is used when the temperature inside the oven is 50 ° C. or lower at the start of heating, and the correction data b2 is used when the temperature is between 50 ° C. and 100 ° C. Is set.

As described above, the microwave oven 10 used in the first embodiment does not store the heating start time for each heating mode and heating time, but the data uniquely determined corresponding to the heating mode and the data. Since only the correction data for correcting the data from the viewpoint of the oven internal temperature is stored and the drive start time Tb is calculated from the data, the control algorithm of the control unit 11 can be simplified.

The first embodiment has been described above.

In the first embodiment, the basic drive start time (Ta) is corrected only by the correction data corresponding to the initial temperature. However, the present invention is not limited to this. .

Then, a second embodiment in which the control unit 11 performs the correction by the menu and the correction based on the temperature in the oven during heating will be described. However, this embodiment shows the case where the EEPROM 16 is provided with a table divided for each heating mode.

The structure of the microwave oven used in the second embodiment is similar to that of the first embodiment, and detailed description thereof will be omitted.

FIG. 5 is a diagram showing the structure of the table 50 used in the second embodiment. As shown in FIG. 5, the table 50 is divided into heating modes of oven, grill, and toaster, and a correction element is added to the head of each division.

That is, the table 50 uses the menu as a correction factor, and also uses the initial temperature and temperature change in the oven as a correction factor. In the present embodiment, each correction element is listed for convenience of description, but in reality, identification data corresponding to each correction element is added.

Further, in the table 50, following the item of the correction element, parameters of each correction element, that is, menu correction, initial temperature correction and temperature change correction are set, and specifically, as menu correction data. a is set, b1 to b3 are set as initial temperature correction data, and c1 and c2 are set as temperature change correction data.

In this case, the basic drive start time (T
a ′) is the product of the constant α and the menu correction value a, and Ta ′ = α × a.

Further, assuming that the initial temperature correction and the temperature change correction are b and c, respectively, the drive start time (T
b ′) can be calculated from Tb ′ = Ta ′ × c−b.

Next, the processing procedure of the control unit when this table 50 is used will be described.

FIG. 6 is a flowchart showing the processing procedure of the control unit when the table 50 shown in FIG. 5 is used.
As shown in FIG. 6, when a key input for heating including menu selection is made from the key input circuit 14, heating in the oven chamber is started (step 602), and the temperature sensor circuit 12 is used to heat the oven. The initial temperature in the refrigerator is measured (step 603).

Then, after taking out the data from the table 50 stored in the EEPROM 16 (step 60
1, 604), and the temperature inside the oven at that time is measured (step 605).

Next, after calculating the reference drive start time (Ta ') of the cooling fan 25 (step 606), the correction data b1 to bn corresponding to the initial temperature and the correction data c1 to c2 corresponding to the changing temperature are used. Then, the basic drive start time is corrected to obtain the drive start time (Tb ') (step 60).
7, 608).

After the start of heating, this drive start time (T
When b ′) has elapsed, the cooling fan 25 is driven to start cooling (steps 609 and 610). Note that the relay drive circuit 17 uses the upper heater 21 regardless of whether cooling is performed or not.
The heating relay 28a and / or the heating relay 28b of the lower heater 22 are turned on (step 611).

As described above, in the second embodiment, the menu is treated as correction data, and the drive start time of the cooling fan 25 is corrected so as to follow the temperature change in the oven chamber.

Next, taking the temperature change of the weight sensor portion arranged under the microwave oven 10 as an example, the EEPROM 1
Data to be stored in the table in 6 will be described.

FIG. 7 is a diagram showing a temperature change of the weight sensor portion arranged in the lower portion of the microwave oven 10 and a table configuration in such a case. As shown in FIG. 7A, here, the component temperature at the start of heating is 20 ° C., and the temperature at which the weight sensor component should be cooled is 270 ° C.
Then, when it takes 15 minutes to reach this temperature when heating the oven, the time required for heating (Tc) per 10 ° C. when heating the oven is: Tc = 15 minutes / (270 ° C.−20 ° C.) = 0.6
Min / 10 ° C.

At a certain point, the initial temperature of the component is 70
If it is ℃, it will take (70-20) × Tc = 3 minutes for this heavy component to reach 70 ℃ from 20 ℃.

From this, "0.6" is set in the menu correction data of the table 70 shown in FIG. 7B,
'3' is set to the initial temperature correction data of 70 ° C. Here, assuming that the fixed constant common to each heating mode is 25, the drive start time Tb ′ is 0.6 × 25−3 = 12 minutes, so the drive of the cooling fan 25 is started after 12 minutes.

As described above, in the second embodiment, the menu is regarded as a correction element, and the initial temperature and temperature change in the oven chamber can be designated as the correction element. It is possible to correct the basic drive time based on the temperature inside the oven, and set an appropriate drive start time.

[0081]

As described in detail above, in the first aspect of the present invention, a table in which the heating modes that the heating unit can support and the drive data of the cooling fan that corresponds to each heating mode are associated with each other is prepared in advance. Every time, when the heating mode for heating the object to be heated is instructed, the drive data corresponding to the heating mode is specified based on this table, and the cooling fan is drive-controlled based on the specified drive data. Therefore, it is possible to efficiently calculate the driving condition of the cooling fan corresponding to each heating mode without individually storing the driving start time corresponding to the heating temperature and the heating time for each heating mode.

In the second aspect of the present invention, the heating mode that the heating unit can correspond to and the drive data of the cooling fan that corresponds to each heating mode are associated with each other, and the internal temperature and the correction data corresponding to the temperature are associated with each other. A table to be stored additionally is prepared in advance, and when the heating mode for heating the object to be heated is instructed, the drive data corresponding to the heating mode is specified based on this table, and the specified drive data is set. Based on this, the basic driving time is calculated. Then, the correction data corresponding to the temperature inside the refrigerator measured by the temperature sensor is taken out from the table, the drive start time in which the basic drive time is corrected is calculated based on the correction data, and the cooling fan is calculated based on the drive start time. Since it is configured to control the drive, it is possible to correct the basic drive time based on the initial temperature in the refrigerator and the temperature change in the refrigerator at the start of heating, and set an appropriate drive start time.

Further, in the third invention, correction data corresponding to the temperature inside the chamber measured by the temperature sensor at predetermined time intervals is taken out from the table, and the heating unit responds to the progress of heating the object to be heated. Meanwhile, since the basic drive time is configured to be corrected based on the correction data, it is possible to correct the basic drive time based on the temperature inside the chamber that rises after the start of heating, and set an appropriate drive start time. .

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a microwave oven used in a first embodiment.

FIG. 2 is a diagram showing an outline of a microwave oven used in the first embodiment.

3 is a flowchart showing a control procedure of a cooling fan performed by a control unit shown in FIG.

4 is a diagram showing an example of a heating mode table and a correction data table stored in the EEPROM shown in FIG.

FIG. 5 is a diagram showing a configuration of a table used in the second embodiment.

6 is a flowchart showing a processing procedure of a control unit when the table shown in FIG. 5 is used.

FIG. 7 is a diagram showing a temperature change of a weight sensor portion arranged under the microwave oven and a table configuration in such a case.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Microwave oven, 11 ... Control part, 12 ... Temperature sensor circuit, 13 ... Power supply circuit, 14 ... Key input circuit, 1
5 ... Reset circuit, 16 ... EEPROM, 17 ... Relay drive circuit, 18 ... Display circuit, 19 ... Fan drive circuit, 21 ... Upper heater, 22 ... Lower heater, 23 ... Thermistor, 24 ... Magnetron, 25 ... Cooling fan,
26 ... Electrical components, 27 ... Operation panel, 28a, 28
b, 28c, 28d ... Relay, 40 ... Heating mode table, 41 ... Correction data table, 50, 70 ... Table

Claims (3)

[Claims] 1. A heating unit for applying heating energy in a heating mode instructed to an object to be heated arranged in a refrigerator, and a cooling fan for supplying outside air sucked to the heating unit as cooling air. In a heating device having, a table in which heating modes that the heating unit can support and drive data of the cooling fan corresponding to each heating mode are associated with each other, and a heating mode for heating the object to be heated is instructed. ,
A heating device comprising: a control unit that specifies drive data corresponding to the heating mode based on the table and drives and controls the cooling fan based on the specified drive data. 2. A heating unit for applying heating energy in a heating mode instructed to an object to be heated arranged in a refrigerator, and a cooling fan for supplying outside air sucked to the heating unit as cooling air. , In a heating device having a temperature sensor for measuring the temperature in the refrigerator, in association with the heating mode that the heating unit can correspond and the drive data of the cooling fan corresponding to each heating mode, the temperature in the refrigerator And a table that stores the correction data corresponding to the temperature in association with each other, and when a heating mode for heating the object to be heated is instructed,
Corresponding to the temperature inside the refrigerator measured by the temperature sensor, first calculation means for specifying the drive data corresponding to the heating mode based on the table, and calculating the basic drive time based on the specified drive data Based on the drive start time calculated by the second calculating means, which calculates the drive start time in which the basic drive time is corrected based on the correction data A heating device comprising: a control unit that drives and controls the cooling fan. 3. The second calculating means fetches correction data corresponding to the temperature inside the refrigerator measured by the temperature sensor at predetermined time intervals from the table, and the heating unit heats an object to be heated. 3. The heating device according to claim 2, wherein the basic drive time is corrected based on the correction data while responding to.