JPH1163516A - Heating cooking range - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooking range in which excessive heating time is eliminated in the deodor heating. SOLUTION: When a deodor key on a control panel is depressed (YES at S2), a decision is made whether the temperature T2 in a heating chamber is higher than a preset time switching temperature T0 (S10). If T2 is shorter than T0, the heating time for deodoring the heating chamber (burn-up time) is set at TB (S12) otherwise the burn-up time is set at TA shorter than the TB (S11).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating and cooking apparatus such as a microwave oven, and more particularly to a heating and cooking apparatus for performing a heating and deodorizing treatment for heating a heating chamber for deodorizing.

[0002]

2. Description of the Related Art In a conventional cooking apparatus of this kind, the smell of cooked food may remain in the heating chamber after cooking. And the heating cooking device, the heating unit,
It was configured to perform a heating deodorization process of heating a heating chamber for deodorization. This heat deodorization treatment,
It was also called "baked". In a conventional heating cooking device, this roasting has been performed for a certain period of time. This fixed time means that even if the temperature of the heating chamber is the lowest temperature within the temperature range normally expected before burning out, the predetermined temperature (for example, contained in the deodorizing paint applied in the heating chamber). (The activity change temperature, at which the activity of the catalyst changes remarkably), and is maintained at the predetermined temperature for a predetermined period or more. In addition, the conventional heating cooking device was provided with a temperature detection unit that detects the temperature of the heating chamber. In this burn-out, the operation of the heating unit is controlled so that the temperature detected by the temperature detection unit does not exceed the temperature (maximum heating temperature) considered to be dangerous if it rises further.

[0003]

However, in the conventional heating cooking apparatus, in the burn-out, the heating unit is controlled so that the temperature of the heating chamber does not exceed the maximum heating temperature. It was controlled regardless of temperature. That is, the time required for the burn-off process was constant irrespective of the temperature of the heating chamber. Therefore, depending on the temperature of the heating chamber at the start of burning, the above-mentioned predetermined temperature may be maintained longer than necessary. In other words, the fixed time for performing heating at the time of burning is set such that a predetermined effect by burning can be obtained even if the temperature of the heating chamber at the start of burning is the normally expected minimum temperature. Therefore, as the temperature of the heating chamber at the start of burning becomes higher than the above minimum temperature, the extra heating time in burning increases.

[0004] On the other hand, the heating and cooking device should be configured so as not to perform an extra heating operation as much as possible in order to save energy in its operation and to enhance safety in its use.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heating cooking apparatus which is controlled so as to eliminate an extra heating time in heating for deodorization.

[0006]

According to a first aspect of the present invention, there is provided a heating and cooking apparatus comprising: a heating chamber for storing food; a heating section for performing a heating deodorization process for heating the heating chamber for deodorization; The control unit that controls the operation of the heating unit, including a temperature detection unit that detects the temperature of the heating chamber, the control unit, the processing period of the heating deodorization process, the temperature detected by the temperature detection unit It is characterized in that it is changed according to it.

According to the first aspect of the present invention, in the heating cooking apparatus, the processing period of the heating and deodorizing treatment in which the heating chamber is heated for deodorization varies according to the temperature of the heating chamber.

[0008] As a result, the duration of the heating and deodorizing treatment does not become constant irrespective of the temperature of the heating chamber. Therefore, it is possible to provide a heating and cooking apparatus that does not require extra heating time in heating for deodorizing. it can.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, an instruction unit for instructing the heating unit to perform the heat deodorizing process is provided. The control unit may further include a processing period of the heating and deodorizing process as a first period when a temperature detected by the temperature detection unit when an instruction from the instruction unit is input is lower than a predetermined temperature. If the temperature is equal to or higher than the predetermined temperature, a second period shorter than the first period is set.

According to the second aspect of the present invention, the first aspect is provided.
In addition to the operation according to the invention described in the above, in the heating cooking device, in the heating deodorization processing, if the temperature of the heating chamber at the start of the processing is less than a predetermined temperature, the heating chamber is heated only for the first period, If the temperature is equal to or higher than the predetermined temperature, the heating chamber is in the first position.
Is heated for a second period shorter than the period.

Thus, in addition to the effect according to the first aspect of the present invention, when the temperature of the heating chamber at the start of the heating deodorization treatment is increased to some extent during the heating deodorization treatment period,
Be shorter. Therefore, it is possible to provide a heating cooking apparatus that does not require an extra heating time in heating for deodorization.

According to a third aspect of the present invention, in the heating and cooking apparatus according to the first aspect of the present invention, in addition to the configuration of the heating and cooking apparatus according to the first aspect of the present invention, the control unit controls the processing period of the heating and deodorizing process. A predetermined period is set from a point in time when the temperature detected by the temperature detector reaches a predetermined temperature.

According to the third aspect of the present invention, the first aspect is provided.
In addition to the operation according to the invention described in the above, in the heating cooking device, in the heating deodorization processing, the heating chamber, after the start of the processing,
After the temperature reaches a predetermined temperature, the heating is further performed for a predetermined period.

[0014] Thus, in addition to the effect of the first aspect of the present invention, the heating deodorizing treatment is performed for a predetermined period during the heating chamber regardless of the temperature of the heating chamber at the start of the processing. It changes so that it is maintained at the temperature. Therefore, it is possible to provide a heating cooking apparatus that does not require an extra heating time in heating for deodorization.

According to a fourth aspect of the present invention, in addition to the configuration of the third aspect of the present invention, an instruction unit for instructing the heating unit to perform the heat deodorizing process is provided. The control unit may further include, if the temperature detected by the temperature detection unit when the instruction from the instruction unit is input is less than a predetermined temperature, the first period may be a first period.
And a second period shorter than the first period if the temperature is equal to or higher than the predetermined temperature.

According to the invention described in claim 4, according to claim 3,
In addition to the operation according to the invention described in the above, in the heating cooking device, a predetermined period after the temperature of the heating chamber reaches a predetermined temperature in the heating deodorization processing period, at the start of the heating deodorization process. It changes depending on the temperature of the heating chamber. In other words, if the temperature of the heating chamber at the start of the heat deodorization treatment is lower than the first temperature, the predetermined period is the first period, and if it is equal to or higher than the first temperature, the predetermined period is the first period. Is a second period shorter than the period.

Thus, in addition to the effect of the third aspect of the present invention, the processing period of the heating and deodorizing treatment is shortened when the temperature of the heating chamber at the start of the heating and deodorizing treatment is increased to some extent. Therefore, it is possible to provide a heating cooking apparatus that does not require an extra heating time in heating for deodorization.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1A is a perspective view of a microwave oven according to a first embodiment of the heating and cooking apparatus of the present invention. The microwave oven 1 mainly includes a main body 2 and a door 3. The main body 2 is provided with an exterior part 4 that covers the outer periphery of the main body 2, a control panel 6, and a plurality of legs 8. The control panel 6 is provided on the front of the microwave oven 1 so that the user can operate the microwave oven 1. Further, the door 3 is provided with a handle 3a for the user to open and close the door 3.

FIG. 1B shows a state in which the door 3 of FIG. 1A is opened to the front. A heating chamber 5 is provided inside the main body 2 behind the door 3. Further, a turntable 15 for placing food is provided inside the heating chamber 5.

FIG. 2 is a view schematically showing the internal structure of the main body 2 of the microwave oven 1. A thermistor 18 for detecting the temperature of the heating chamber 5 is attached inside the heating chamber 5. An upper heater 12 and a lower heater 13 for heating the food 17 on the heating chamber 5 and the turntable 15 are provided above and below the heating chamber 5, respectively. Further, on the right side of the heating chamber 5, a magnetron 10 that emits high-frequency radio waves to heat and cook the food 17 and a transformer 11 for supplying power to the magnetron 10 are provided. A turntable motor 16 for rotating and driving the turntable 15 is provided below the heating chamber 5.
Is provided.

A fan (not shown) for cooling the heated magnetron 10 is provided behind the magnetron 10. Further, on the left side of the heating chamber 5, a heating chamber light (not shown) for illuminating the heating chamber 5 when the magnetron 10 or the upper heater 12 and the lower heater 13 are heating is provided.

FIG. 3 is a diagram showing a detailed configuration of the control panel 6. The control panel 6 includes a display panel 60 made of, for example, a liquid crystal, and further has an automatic menu key 6a operated to select a desired menu from among the automatic menus 61 in which cooking proceeds in accordance with a previously stored cooking program; Decompression key 6b operated for thawing, oven key 6c operated for oven cooking, start key 6d operated for starting cooking, cooking for canceling contents specified by key operation or proceeding Cancel key 6e operated to temporarily stop the process, warming key 6f operated to warm food, range key 6g operated for range cooking, grill key 6h operated for grill cooking, and cooking Includes a timer key 6i that is rotated to set the period. In addition, the control panel 6 heats the inside of the heating chamber 5 at a high temperature by using the upper heater 12 and the lower heater 13 to operate the direct fire grill key 6j operated to cook the surface of the food 17 so as to brown it. Includes a deodorizing key 6k operated for deodorizing (burning out). Further, the control panel 6 includes the microwave oven 1.
And a kitchen timer key 62 operated to use as a timer other than during cooking. The contents of these various key operations are displayed on the display panel 60 each time, and the user can confirm the operation contents.

FIG. 4 is a diagram schematically showing an electric circuit of the microwave oven 1. In FIG. 4, the microwave oven 1 includes a control circuit 25 including a microcomputer for controlling the operation of the microwave oven 1. The control circuit 25
The microwave oven 1 is connected to the control panel 6 and controls the microwave oven 1 in accordance with data and the like input from the control panel 6. The control circuit 25 is connected to the thermistor 18 and controls the microwave oven 1 according to the temperature of the heating chamber 5 detected by the thermistor 18.

Reference numeral 21 denotes a relay for turning on the turntable motor 16. Reference numerals 22 and 23 denote relays for turning on the upper heater 12 and the lower heater 13, respectively. Reference numeral 24 denotes a relay for energizing the transformer 11. Reference numeral 26 denotes a heating chamber light for illuminating the above-described heating chamber 5, and reference numeral 27 denotes a motor for driving a cooling fan of the magnetron 10 described above.

Reference numeral 30 denotes a door switch which closes the circuit shown in FIG. 4 when the door 3 is closed. Also, 20 is
It is a relay for energizing the heating chamber light 26 and the motor 27, and its opening and closing are controlled by the control circuit 25. The opening and closing of the relays 21 to 25 are also controlled by the control circuit 25.

An AC power supply 100 supplies power to the entire circuit shown in FIG. Numerals 28 and 29 are fuses, respectively. The fuse 29 is a thermal fuse, and opens the circuit when the temperature of the portion other than the heating chamber 5 of the microwave oven 1 becomes abnormally high (eg, 200 ° C.). Has a role to prevent.

Next, performed in the microwave oven 1,
The burning will be described. Usually, the roasting is performed in a state where no food is stored in the heating chamber 5. In this state, when the deodorizing key 6k is pressed, the upper heater 12
And the energization of the lower heater 13 is started. The burning in the present embodiment is performed by heating the heating chamber 5 by the upper heater 12 and the lower heater 13, and the heating time is the time when the deodorizing key 6 k is pressed (at the start of burning). It changes according to the temperature of the heating chamber 5. Less than,
The burn-out in which the heating time changes depending on the temperature of the heating chamber 5 will be described with reference to FIG.

FIG. 5 is a flowchart of burn-out according to this embodiment. First, the control circuit 25 determines in step S1
In (hereinafter, simply referred to as S1), it is determined whether or not any key of the control panel 6 has been pressed.
If any key is pressed, the process proceeds to S2, and if no key is pressed, the process returns.

Next, in S2, the control circuit 25 determines whether or not the pressed key is the deodorizing key 6k. If the depressed key is 6k, the control circuit 25 proceeds to S4. In S3, another process is performed based on the pressed key, and the process returns.

Next, the control circuit 25 turns on the relay 20 to start the heating of the upper heater 12 and the lower heater 13 in S4, performs a process of closing the circuit by the relay 20, and proceeds to S5. When the door 3 is closed and the door switch 30 is turned on and the relay 20 is turned on, the heating chamber light 26 and the blower motor 2 are prepared in preparation for heating by the upper heater 12 and the lower heater 13.
7 is turned on.

Next, in S5, the control circuit 25 performs a process of setting the in-chamber control temperature (T1). T1 is the temperature of the heating chamber 5 to be reached in the burning, for example, 300 ° C. When a paint containing a deodorizing reaction catalyst is applied to the inner wall of the heating chamber 5, this T
One can be the temperature at which the activity of the catalyst changes significantly.

Next, the control circuit 25 performs processing for setting the time switching temperature (T0) in S6. T0 is the boundary temperature when the burning time is determined by the temperature of the heating chamber 5 at the start of burning. In the present embodiment,
If the temperature of the heating chamber 5 at the start of burning is T0 or more, the burning time, that is, the heating time is TA, and if it is less than T0, the heating time is TB longer than TA. Therefore, if the temperature of the heating chamber 5 at the start of heating is high to some extent, the burning time is shortened. Note that T0 is, for example, 20
0 ° C. Also, TA is, for example, 15 minutes, TB
Is, for example, 20 minutes. In the present embodiment, by setting T0 in this manner, for example, heating and cooking is performed in microwave oven 1 immediately before burning, and when the temperature of heating chamber 5 is sufficiently high, the burning time is reduced. It can be shorter. In other words, setting T0 is
If the temperature of the heating chamber 5 at the start of burning is sufficiently high, it is not necessary to heat the heating chamber 5 for the same time as when the temperature of the heating chamber 5 is low in order to set the temperature of the heating chamber 5 to the aforementioned T1. It is. Thus, extra burning time can be eliminated.

Next, the control circuit 25 determines in step S7 that the timer T
A and TB are reset. Note that the timer T
A and TB are timers for measuring the heating times TA and TB of the above-described heating chamber 5, respectively. Next, the control circuit 25
At step 8, a process for resetting the flags F0 and F1 is performed.
The flags F0 and F1 will be described later. Next, in S9, the control circuit 25 detects the detected temperature of the thermistor 18 (T
A process for detecting 2) is performed.

Next, in S10, the control circuit 25 determines whether or not T2 at that time is equal to or greater than T0. In other words, here, the temperature of the heating chamber 5 at the start of burning is T
A determination is made whether it is greater than or equal to zero. When determining that the heating time is equal to or longer than T0, the control circuit 25 sets a timer TA to set the heating time for burning out to TA in S11. When determining that the heating time is shorter than T0, the control circuit 25 determines the heating time in S12. A timer TB is set in order to set TB.

Next, the control circuit 25 turns on the relay 22 to turn on the upper heater 12 at S13, and turns on the relay 23 to turn on the lower heater 13 at S14. Perform

Next, the control circuit 25 determines in S15 that S11
Alternatively, the timer (timer TA or timer TB) set in S12 is counted down. Next, the control circuit 25
Determines whether the timer counted down in S15 has become 0 in S16. If the timer is not yet 0, the control circuit 25 performs a process of detecting T2 at that time in S17, and further determines in S18 whether the detected T2 is equal to or greater than T1.

When T2 is less than T1, that is, when the temperature of the heating chamber 5 has not reached T1, the control circuit 25
Determines whether the flag F0 is set (F0 = 1) in S19. The flag F0 corresponds to S2 described later.
This flag is set at 2. And the control circuit 25
When determining that F0 is not set, S15
Then, a process of counting down the timer TA or TB is performed.

If the timer TA or the timer TB has not yet become 0 and T2 has reached T1, the control circuit 25
Performs the processing of S16 to S18, and determines whether or not the flag F0 has been reset in S21. If the flag F0 is reset (F0 = 0), a process of setting the flag F0 is performed in S22, and further, in S24 and S25, the relay 22 is turned off to turn off the upper heater 12 and the lower heater 13. 23 is turned off.

Next, the control circuit 25 determines whether or not the flag F1 is set in S26. The flag F1 is a flag set in S23. If it is determined that the flag F1 is not set, the control circuit 25
Performs the process of counting down the timer TA or the timer TB in S15 as it is. And the timer TA
Or, if the timer TB is not yet 0, the control circuit 2
5, after performing the processing of S16 and S17, it is determined in S18 whether or not T2 at that time is equal to or greater than T1.

When T2 becomes less than T1 due to turning off the upper heater 12 and lower heater 13 in S24 and S25, the control circuit 25 determines whether or not the flag F0 is set in S19. If the flag F0 is set, the control circuit 25 performs a process of resetting the flag F0 in S20, and then turns on the relays 22 and 2 to turn on the upper heater 12 and the lower heater 13 in S13 and S14.
3 is performed, and the process proceeds to S15 to count down the timer.

If the timer has not yet reached 0 and T2 has reached T1, the control circuit 25 determines in steps S16 to S1
After performing the process in step 8, it is determined in step S21 whether the flag F0 has been reset. And the control circuit 25
Determines that the flag F0 has been reset,
After the flag F0 is set at S22, the relay 2 is turned off at S24 and S25 to turn off the upper heater 12 and the lower heater 13.
A process for turning off the switches 2 and 23 is performed. And the control circuit 2
In step S26, it is determined whether or not the flag F1 is set. If the flag F1 is not set, the process proceeds to step S15. If it is determined in S21 that the flag F0 has not been reset, the process directly proceeds to S15.

The above processing is repeated, and the heating chamber 5
Is heated for a time of TA or TB. And
The control circuit 25 continues counting down the timer in S15, and when determining in S16 that the timer has become 0, the control circuit 25 proceeds to S23
Then, a process of setting the flag F1 is performed. And S
In steps S24 and S25, a process of turning off the upper heater 12 and the lower heater 13 is performed. Then, the control circuit 25 determines in step S26 that F
If it is determined that 1 is set, the relay 2 is determined in S27.
Turn off 0, and finish burning.

In the present embodiment described above, the upper heater 12 and the lower heater 13 constitute a heating section for performing a heating deodorization process (burning out) for heating the heating chamber for deodorization. And a control unit for controlling the operation of the heating unit. The deodorizing key 6k constitutes an instruction unit for instructing the heating unit to perform a heating deodorization process.

Further, the control circuit 25 performs the above processing, so that the burning time, that is, the heating time, becomes
Either TA or TB depending on the temperature detected by the thermistor 18. Therefore, the control unit changes the processing period of the heating and deodorizing process according to the temperature detected by the temperature detection unit. Note that the number of periods prepared as the heat deodorization processing period is not limited to “2”. More processing periods may be prepared according to the temperature detected by the temperature detection unit.

Further, in this embodiment, if the temperature of the heating chamber 5 at the start of burning, detected in S10, is lower than T0, the burning time is set to TB in S12.
On the other hand, if T0 or more, the burn-out time is set to TA in S11.

That is, the control unit sets the processing period of the heating and deodorizing process to a first period if the temperature detected by the temperature detecting unit when the instruction from the instruction unit is input is lower than a predetermined temperature. If the temperature is equal to or higher than the temperature, the second period is shorter than the first period. Thereby, an extra heating time can be eliminated in the heating deodorization treatment.

[Second Embodiment] A second embodiment of the present invention is different from the microwave oven 1 in the first embodiment in that only the control mode in the burn-out of the control circuit 25 is changed. is there. That is, in the present embodiment, the control circuit 25 presses the deodorizing key 6k to start heating, and the temperature of the heating chamber 5 reaches the in-compartment control temperature (T1) described in the first embodiment. Thereafter, a process of setting the burning time so that the heating chamber 5 is heated for a further fixed time is performed. Hereinafter, a control mode in burn-out of the control circuit 25 according to the second embodiment will be described with reference to FIG.

FIG. 6 is a flowchart of burn-out according to this embodiment. First, the control circuit 25 determines in S30 that none of the keys on the control panel 6 has been pressed, or presses a key other than the deodorizing key 6k (YES in S30, NO in S31) and S32
When another process is performed based on the pressed key, the process returns. When the key is pressed and the key is the deodorizing key 6k (when YES is determined in S31)
In step S33, a process of turning on the relay 20 is performed.
Then, in S34, a process of setting T1 is performed. This T1 is the same as T1 of the first embodiment.

Next, in S35, a process for resetting the timer TC is performed. Note that the timer TC is a timer for measuring the time TC, and the TC means that the temperature of the heating chamber 5 is initially T
This is the time when the heating chamber 5 is heated after reaching 1. Note that TC is, for example, 15 minutes. Next, the control circuit 2
5 is a step of resetting the flags F2 and F3 in S36. The flags F2 and F3 will be described later. Next, the control circuit 25 performs a process of setting a timer TC in S37.

Next, the control circuit 25 proceeds to steps S38 and S39.
Then, in order to turn on the upper heater 12 and the lower heater 13, a process of turning on the relays 22 and 23 is performed. Next, in S40, the control circuit 25 sets the flag F3 (F3 = 1).
It is determined whether or not it has been performed. The flag F3 is a flag set in S46 described later. Then, when the control circuit 25 determines that F3 is not set, it proceeds to S
Go to 41.

Next, in S41, the control circuit 25 performs a process of detecting T2 (the temperature detected by the thermistor 18) at that time, and in S42, the detected T2 is equal to T1.
It is determined whether or not this is the case. When T2 is less than T1, that is, when the temperature of the heating chamber 5 has not yet reached T1, the control circuit 25 determines in S43 whether or not the flag F2 is set (F2 = 1). Flag F2
Is a flag set in S48 described later. Then, when the control circuit 25 determines that F2 is not set, in S44, it determines whether or not the flag F3 is reset. When determining that F3 has been reset, the control circuit 25 performs a process of detecting T2 at that time in S41.

Then, the control circuit 25 determines in step S42 that T2
Is greater than or equal to T1, it is determined in S47 whether or not the flag F2 has been reset. If it is determined that F2 has been reset, a process of setting the flag F2 is performed in S48, and the relay 2 is turned off to turn off the upper heater 12 and the lower heater 13 in S49 and S50.
Turn off 2, 23 and proceed to S51. On the other hand, when it is determined in S47 that the flag F2 has not been reset,
Proceed directly to S51.

The control circuit 25 performs a process of counting down the timer TC in S51, and in S52,
It is determined whether or not the timer TC has reached 0. Timer TC
If is not yet 0, the process proceeds to S41.

Then, the control circuit 25 detects T2 at that time in S41, and determines in S42 whether or not T2 is equal to or greater than T1. In S42, T2 becomes T
It is determined that the value is less than 1 and, in S43, the flag F2
Is set, the control circuit 25
Resets the flag F2 in S45, and furthermore in S46
After setting the flag F3, the process proceeds to S38.

If it is determined in S40 that the flag F3 has been set, the control circuit 25 proceeds to S51.

When the control circuit 25 determines that the timer TC has become 0 in S52, the control circuit 25 repeats the above processing.
At 53, the relay 20 is turned off.
Then, the relays 22 and 23 are turned off to finish burning.

In the present embodiment described above, S
The countdown of the timer TC at 51 is performed by the control circuit 25
Is started after first determining that T2 is equal to or greater than T1 (YES in S42). That is, in the present embodiment, for example, when cooking is performed before burning and the temperature of the heating chamber 5 is increased to about 250 ° C., the temperature of the heating chamber 5 is set to room temperature (25 ° C.). ), The heating time to the heating chamber 5 becomes shorter. This is because even if the heating time is shortened, a sufficient effect of burning out can be expected. That is, in the present embodiment, the control unit sets the processing period of the heating and deodorizing process to a predetermined period (TC) from the time when the temperature detected by the temperature detection unit reaches the predetermined temperature (T1). And, by this, in burning
Extra heating time can be eliminated.

[Third Embodiment] A third embodiment of the present invention is different from the microwave oven 1 of the first embodiment in that only the control mode in the burn-out of the control circuit 25 is changed. is there. That is, in the present embodiment, the control circuit 25 presses the deodorizing key 6k to start heating, and the temperature of the heating chamber 5 reaches the in-compartment control temperature (T1) described in the first embodiment. Thereafter, a process is performed to set the burning time so that the heating chamber 5 is heated for a further predetermined time. Then, the predetermined time is the deodorizing key 6k
Changes according to the temperature of the heating chamber 5 when is pressed.
Hereinafter, a control mode in burn-out of the control circuit 25 according to the third embodiment will be described with reference to FIG.

FIG. 7 is a flowchart of the burn-out processing according to the present embodiment. First, the control circuit 25 determines in S60 that none of the keys on the control panel 6 has been pressed, or presses a key other than the deodorizing key 6k (YES in S60, NO in S61), and returns to S60.
If another process based on the pressed key is performed at 62, the process returns. If the key is pressed and the key is the deodorizing key 6k (YES in S61), a process of turning on the relay 20 is performed in S63. Then, in S64, a process of setting T1 is performed.
This T1 is the same as T1 of the first embodiment.

Next, in S65, the control circuit 25 performs a process of setting the time switching temperature (T3). T3 is a boundary temperature when the heating time after the temperature of the heating chamber 5 reaches T1 is determined by the temperature of the heating chamber 5 at the start of burning. The heating time after the temperature of the heating chamber 5 reaches T1 is TP if the temperature of the heating chamber 5 at the start of burning is T3 or higher, and TQ is longer than TP if the temperature of the heating chamber 5 is lower than T3. Therefore, if the temperature of the heating chamber 5 at the start of burning is high, the burning time, that is, the heating time, becomes short. T3 is, for example, 250 ° C. TP is, for example, 10 minutes, and TQ is, for example, 15 minutes.
Minutes. By setting T3 as described above in the present embodiment, for example, heating cooking is performed in microwave oven 1 immediately before burning, and when the temperature of heating chamber 5 is sufficiently high, the burning time can be shortened. Note that T
The reason for setting 3 is that if the temperature of the heating chamber 5 for burning is sufficiently high, it is possible to assume that the microwave oven 1 has performed substantially the same processing as that of burning before starting burning. Heating chamber 5 for the same time as when the temperature of 5 is low
Is considered to be unnecessary. Thus, extra burning time can be eliminated.

Next, the control circuit 25 performs a process of resetting the timers TP and TQ in S66. Note that the timers TP and TQ are the heating times (TP, T
Q). Next, the control circuit 25
Performs a process of resetting the flags F4 and F5 in S67. The flags F4 and F5 will be described later.
Next, the control circuit 25 performs a process of detecting the detected temperature (T2) of the thermistor 18 in S68.

Next, in S69, the control circuit 25 determines whether or not T2 at that time is greater than or equal to T3.
If the control circuit 25 determines that the temperature is equal to or higher than T3, in S70, the heating time after the temperature of the heating chamber 5 reaches T1 is set to TP (timer TP is set), and if it is less than T3. If determined, the heating time is set to T in S71.
Q (set timer TQ).

Next, the control circuit 25 determines in steps S72 and S73.
Then, in order to turn on the upper heater 12 and the lower heater 13, a process of turning on the relays 22 and 23 is performed. Next, in S74, the control circuit 25 sets the flag F5 (F5 = 1).
It is determined whether or not it has been performed. The flag F5 is a flag set in S80 described later. When the control circuit 25 determines that F5 is not set, the process proceeds to S7.
In step S5, a process of detecting T2 is performed.
It is determined whether or not the detected T2 is equal to or greater than T1. Then, when determining that T2 is less than T1, the control circuit 25 determines whether or not the flag F4 is set in S77. The flag F4 is a flag set in S82 described later.

If F4 is not set, the control circuit 25 resets the flag F5 in step S78 (F5 = 0).
It is determined whether or not it has been performed. And the control circuit 2
When determining that the flag F5 has not been reset, the timer 5 counts down the timer set in S70 or S71 in S85, and determines whether the timer is 0 in S86. If the timer is not yet 0, the process proceeds to S75. On the other hand, the control circuit 25
When it is determined that the flag F5 has been reset, the process directly proceeds to S75.

The control circuit 25 detects T2 at that time in S75, and determines in S76 whether or not T2 is equal to or greater than T1. And the control circuit 25
When it is determined that T2 is equal to or greater than T1, in S81,
It is determined whether the flag F4 has been reset. When the control circuit 25 determines that the flag F4 has been reset, the control circuit 25 performs a process of setting the flag F4 in S82, and further in S83 and S84,
After performing a process of turning off the relays 22 and 23 to turn off the lower heater 13, the process proceeds to S85. On the other hand, if it is determined in S81 that the flag F4 has not been reset, the process directly proceeds to S85.

The control circuit 25 counts down the timer in S85, and determines in S86 whether the timer has reached 0. If the timer is not 0, T2 at that time is detected in S75, and it is determined in S76 whether T2 is equal to or greater than T1. When determining that T2 is less than T1 and determining that the flag F4 is set in S77, the control circuit 25 resets the flag F4 in S79, sets the flag F5 in S80, and then proceeds to S72.

If it is determined in S74 that the flag F5 has been set, the control circuit 25 proceeds to S85.

The above processing is repeated, and if it is determined in S86 that the timer has become 0, the control circuit 25 proceeds to S87
Then, the relay 20 is turned off, and the relays 22 and 23 are turned off in S88 and S89.

In the above processing, the control circuit 2
5 does not count down the timer in S85 until it determines in S76 that T2 is greater than or equal to T1. In this way, in the burning-out of the present embodiment, after the temperature of the heating chamber 5 first reaches T1, the heating chamber 5 is heated by the control circuit 25 for the time of TP or TQ. The heating time after the temperature of the heating chamber 5 first reaches T1 is the temperature of the heating chamber 5 at the start of burning (T
If 2) is less than T3, TQ is set in S71, and T2 is TQ.
If it is three or more, it is determined in step S70 that the TP is shorter than TQ.

That is, in the present embodiment, the control unit sets the processing period of the heating and deodorizing process to a predetermined period from the time when the temperature detected by the temperature detecting unit reaches the predetermined temperature. The predetermined period is the temperature detected by the temperature detection unit (T2) when the instruction from the instruction unit is input (at the start of burning out).
Is less than the predetermined temperature (T3), the first period (TQ)
If the temperature is equal to or higher than the predetermined temperature (T3), a second period (TP) shorter than the first period (TQ) is set.

[Brief description of the drawings]

FIG. 1 is a diagram showing a microwave oven according to a first embodiment of the present invention.

FIG. 2 is a view schematically showing an internal structure of a main body of the microwave oven of FIG. 1;

FIG. 3 is a diagram showing a detailed configuration of a control panel of the microwave oven of FIG. 1;

FIG. 4 is a diagram schematically showing an electric circuit of the microwave oven in FIG. 1;

FIG. 5 is a flowchart of burning out according to the first embodiment of the present invention.

FIG. 6 is a flowchart of burning out according to the second embodiment of the present invention.

FIG. 7 is a flowchart of burning out according to the third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Microwave oven 5 Heating room 6 Control panel 6k Deodorizing key 12 Upper heater 13 Lower heater 18 Thermistor 20-24 Relay 25 Control circuit

Claims (4)

[Claims] 1. A heating chamber for storing food, a heating unit for performing a heating deodorization process for heating the heating chamber for deodorization, a control unit for controlling an operation of the heating unit, and a temperature of the heating chamber. The heating cooking device, further comprising: a temperature detection unit that detects the temperature, wherein the control unit changes a processing period of the heat deodorization process in accordance with a temperature detected by the temperature detection unit. 2. The apparatus according to claim 2, further comprising an instruction unit configured to instruct the heating unit to perform the heating deodorization process, wherein the control unit sets a processing period of the heating deodorization process when the instruction from the instruction unit is input. If the temperature detected by the temperature detecting unit is lower than a predetermined temperature, the first period is set. If the temperature is equal to or higher than the predetermined temperature, a second period shorter than the first period is set.
The heating and cooking device according to claim 1, wherein the period is set to the period. 3. The heating cooking device according to claim 1, wherein the control unit sets a processing period of the heating deodorization processing to a predetermined period from a point in time when a temperature detected by the temperature detecting unit reaches a predetermined temperature. . 4. The apparatus further includes an instruction unit for instructing the heating unit to perform the heating deodorization process, wherein the control unit is configured to perform the predetermined period during the temperature detection unit when an instruction from the instruction unit is input. The heating and cooking apparatus according to claim 3, wherein if the detected temperature is lower than a predetermined temperature, the first period is set, and if the detected temperature is equal to or higher than the predetermined temperature, a second period shorter than the first period is set.