JPH06193888A - Microwave oven - Google Patents

Abstract

PURPOSE:To permit the even heating of a plurality of cooking foods, which are different in necessitating amount of heat, in a microwave oven equipped with a heater. CONSTITUTION:A microwave oven is provided with a heater 36, heating a cooking food by radiation heat, a high-frequency oscillator 13, heating the cooking food by high-frequency wave, and a power conduction controlling means 20, controlling the power conducting condition for the heater 36 or the high-frequency oscillator 13 in accordance with a selected cooking menu. Upon selecting a heater menu, respective temperatures of a plurality of cooking foods W1, W2, which are heated by the heater 36, are detected by a temperature sensor 52 and when a temperature difference is bigger than a predetermined value, the rotation of a turn table 3 is slowed down or stopped, the amount of generated heat of the heater 36 is increased and the like when the lower temperature cooking food W1 or W2 is approached to the heater 36 whereby a kind of additional heating is effected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven capable of individually controlling the heating state of a heater for each of a plurality of cooked foods.

[0002]

2. Description of the Related Art Generally, in heating a heater in a microwave oven with a heater, a turntable motor is driven to perform uniform heating control on the premise that the cooked food has the same amount, the same container, and the same temperature. (See, for example, Japanese Utility Model Laid-Open No. 2-64803). Therefore, if any one of those conditions is not satisfied, heating unevenness will occur between the cooked foods.

[0003]

However, there are many cases in which a plurality of cooked foods which do not satisfy the above three conditions are simultaneously heated by the heater.

For example, there are various examples such as simultaneous baking of sponge cakes of different sizes and amounts for adults and children, and simultaneous baking of normal toast and frozen toast.

In such a case, in the above-mentioned conventional heating control system, in the former case, there is a large difference in the burning state, and in the latter case, there is too much difference in the required heat amount, and the baking is substantially performed. There is a problem to be solved, such as being unable to do so.

[0006]

The inventions described in claims 1 to 3 of the present application have been made for the purpose of solving the above-mentioned conventional problems, and are configured as follows. There is.

(1) Structure of Microwave Oven According to Claim 1 The microwave oven according to the present invention comprises a turntable on which a food is placed and rotated, and a plurality of turntables on the turntable by radiant heat. A heater for heating food, a high-frequency oscillator for heating a plurality of food on the turntable by high frequency, and an energization control means for controlling the energization state to the heater or the high-frequency oscillator according to the selected cooking menu. In a microwave oven comprising: a temperature sensor for detecting the temperature of each of the plurality of food items on the turntable; and when the temperature difference between the temperatures of the individual food items detected by the temperature sensor is a predetermined value or more, A rotation speed control that reduces or stops the rotation speed of the turntable when the low-temperature side cooked food comes close to the heater due to the rotation of the turntable. And means are provided.

(2) Structure of Microwave Oven According to Claim 2 A microwave oven according to the invention according to claim 2 is a turntable on which a food is placed and rotated, and a plurality of microwave ovens on the turntable by radiant heat. Heater for heating the cooked food, a high frequency oscillator for heating a plurality of cooked foods on the turntable by high frequency, and energization control means for controlling the energized state of the heater or the high frequency oscillator according to the selected cooking menu And a temperature sensor for detecting the temperature of each of the plurality of cooking items on the turntable, and a temperature difference between the temperatures of the individual cooking items detected by the temperature sensor is equal to or more than a predetermined value. And a heating value increase control means for increasing the heating value of the heater when the low temperature side cooked food comes close to the heater by the rotation of the turntable. Is configured.

(3) Structure of microwave oven according to claim 3 The microwave oven according to claim 3 of the present invention has a turntable on which a food is placed and rotated, and a plurality of microwave ovens on the turntable by radiant heat. Main heater that heats the cooked food of
In a microwave oven comprising a high-frequency oscillator that heats a plurality of food items on the turntable by high-frequency waves, and an energization control unit that controls the energization state of the heater or the high-frequency oscillator according to the selected cooking menu, An auxiliary heater located on the opposite side of the main heater, a temperature sensor for detecting the temperature of each of the plurality of food items on the turntable, and a temperature difference between the temperatures of the individual food items detected by the temperature sensor are predetermined. When the value is equal to or more than the value, auxiliary heater control means is provided to energize the auxiliary heater when the low-temperature side cooked material comes close to the auxiliary heater due to rotation of the turntable.

[0010]

The microwave oven of the inventions according to claims 1 to 3 of the present application has the following actions.

(1) Operation of the microwave oven according to the first aspect of the invention In the configuration of the microwave oven according to the first aspect of the invention, as described above, the turntable on which the cooked food is placed and rotated,
A heater that heats a plurality of food items on the turntable by radiant heat, a high-frequency oscillator that heats a plurality of food items on the turntable by high frequency, and a heater or a high-frequency oscillator according to the selected cooking menu. And a temperature sensor for detecting the temperature of each of the plurality of cooking items on the turntable, and the temperature of each cooking item detected by the temperature sensor. And a rotation speed control means for lowering or stopping the rotation speed of the turntable when the low-temperature side cooked food comes close to the heater due to the rotation of the turntable when the temperature difference is above a predetermined value. There is.

Therefore, the low-temperature cooked food, which is insufficiently heated, is sufficiently heated for a longer time than the high-temperature-side cooked food when passing through the heater portion, and the insufficient heating is eliminated. It

(2) Operation of the microwave oven according to the second aspect of the invention In the configuration of the microwave oven according to the second aspect of the invention, as described above, the turntable on which the food is placed and rotated,
A heater that heats a plurality of food items on the turntable by radiant heat, a high-frequency oscillator that heats a plurality of food items on the turntable by high frequency, and a heater or a high-frequency oscillator according to the selected cooking menu. And a temperature sensor for detecting the temperature of each of the plurality of cooking items on the turntable, and the temperature of each cooking item detected by the temperature sensor. When the temperature difference is equal to or more than a predetermined value, a heating value increase control means for increasing the heating value of the heater when the low temperature side cooked food comes close to the heater by the rotation of the turntable is provided.

Therefore, the low-temperature cooked food, which is insufficiently heated, is sufficiently heated by passing a larger amount of heat than the high-temperature-side cooked food when passing through the heater portion, and the insufficient heating is eliminated. .

(3) Operation of the microwave oven according to the invention of claim 3 In the structure of the microwave oven of the invention of claim 3, as described above, the turntable on which the food is placed and rotated,
A main heater that heats a plurality of food items on the turntable by radiant heat, a high-frequency oscillator that heats a plurality of food items on the turntable by high frequency, and the heater or high-frequency oscillator according to the selected cooking menu. In a microwave oven provided with an energization control means for controlling an energization state to an auxiliary heater located on the opposite side of the main heater, and a temperature sensor detecting the temperature of each of the plurality of cooked items on the turntable. When the temperature difference between the temperatures of the individual cooking products detected by the temperature sensor is equal to or more than a predetermined value, the auxiliary of energizing the auxiliary heater when the low-temperature cooking products come close to the auxiliary heater due to the rotation of the turntable. And a heater control means.

Therefore, the low-temperature cooked food, which is insufficiently heated, is sufficiently heated by receiving auxiliary heating by the auxiliary heater when passing through the auxiliary heater portion located on the side opposite to the main heater. Is eliminated.

[0017]

As a result of the above, according to the microwave oven of the present invention, it is possible to uniformly heat a plurality of cooked foods having different required amounts of heat. For example, two types of frozen toasts and ordinary toasts having greatly different required heating amounts are provided. It becomes possible to simultaneously heat the cooked food etc. to an even finishing level, and it becomes possible to convert the conventional toast key and frozen toast key to one key.

[0018]

【Example】

(1) First Embodiment FIGS. 1 to 5 show the configuration and operation of a microwave oven having a heater heating function according to a first embodiment of the present invention.

First, FIGS. 1 and 2 show the microwave oven 1.
It shows the overall structure of (the housing structure), and its housing 1a
A heating chamber (cook storage) 2 is provided inside.
A turntable 3 for placing a food item is rotatably installed on the bottom of the heating chamber 2. Also, the heating chamber 2
A door 16 having a finder portion 17 is attached to the front opening 19 of the front opening 19 so as to be vertically openable and closable. A latch switch 18 is provided on the main body side corresponding to the door 16.

On the other hand, the heating chamber 2 on the front side of the housing 1a
An operation panel section 26 for operating and controlling various functions of the high-frequency heating apparatus is installed on the right side of the opening 19 of the. As shown in detail in FIG. 2, for example, the operation panel unit 26 is provided with a display unit from the upper side to the lower side.
(Liquid crystal display part) 34, heating time setting key for manual menu (27a for 5 minutes, 27b for 1 minute, 3c of 27c for 10 seconds)
2 keys), manual heating key group (4 keys: raw thawing, toaster, pizza heating, porridge) 2
9, automatic heating key group (consisting of 4 keys of canned sake, toast, and rice) 30, manual menu designation key 4
1. The automatic menu designating keys 42 are provided with appropriate operability.

Further, as is apparent from FIG. 1, the door 1 is
In the lower part of the finder 17 of 6, the finishing adjustment key 37 from the left side to the right side, the toast key 39 in which both normal and freezing are made into one key, the thawing key 43, the warming / starting key 44, the cancel key 45, and the range heating for 1 minute A door key group 38 such as the key 47 that is particularly frequently used is provided.

The operation panel section 26 inside the door
On the display unit 34 of, for example, the various operation keys described above are displayed.
When N is operated, various selection setting states are displayed correspondingly.

The operation panel section 26 and the above-mentioned door key group 38 are connected to each other, and for example, as shown in FIG. 3, a control unit 20 for controlling a microwave oven, a data bus and a control bus, which is mainly composed of a microcomputer. The input / output signals can be freely transmitted and received by being connected via.

Further, as is apparent from FIG. 3, the housing 1a of the high-frequency heating device 1 radiates and absorbs microwaves to the object to be heated (cooked product) on the turntable 3 in the heating chamber 2. Magnetron 13 heated by heating
A heater 36 for heating an object to be heated in the heating chamber 2 by irradiating infrared rays, and a heater circuit 35 for driving the heater 36 are installed as shown in the drawing.
Further, a turntable motor drive circuit 24 is provided between the control unit 20 and the turntable motor 4.
However, a magnetron drive unit 22 is provided between the control unit 20 and the magnetron 13. The turntable motor 4 is also provided with a weight sensor WS, and the detection value detected by the weight sensor WS is used for determining the amount of various kinds of food W.

Further, a thermistor 52 is provided above the heating chamber 2 as shown in the drawing. For example, a turntable 3 to which a enamel net 3a is detachably provided.
Radiant heat radiated from the surface of the cooked food W ₁ , W ₂ such as upper toast bread (usually frozen) is incident, and the individual temperature of the cooked food W ₁ , W ₂ is detected from the amount of incident heat. It is like this. An internal lamp 51 is provided on the other side, and the internal lamp 51 is driven to be turned on by a lighting circuit 53.

Then, when the heater menu key such as the door key group 38 or the toast menu key 39 of the operation panel section 26 is turned ON, the control of the heater and the turntable motor as shown in FIG. 6 is started, The heater 36 is turned on, the turntable 3 is rotationally driven, and the internal lamp 51 is turned on.

As a result, for example, the two cooked foods W ₁ and W ₂ on the turntable 3 also rotate.

Further, the thermistor 52 is turned on substantially in synchronization with turning on the heater 36, rotationally driving the turntable 3 and lighting the internal lamp 51.

The cooking product temperature detection signal of the thermistor 52 is input into the control unit 20 to determine the current temperatures T ₁ and T ₂ of the respective cooking products W ₁ and W ₂ and further to determine the temperature between them. The temperature difference ΔT is calculated. Then, when it is determined that there is a temperature difference of a predetermined reference value ΔTs or more between the two, additional heating (heating time increase) is executed by slowing the turntable rotation as described later.

By the way, FIGS. 4 and 5 particularly show the installation structure of the heater 36 with respect to the microwave oven main body in the present embodiment. The heater 36 is arranged near the rear side of the heating chamber 2 and arranged on the ceiling. It is set up.

The positional relationship between the heater 36 and the turntable 3 and the thermistor 52 is set as shown in FIG. 5, and when the turntable 3 is rotationally driven as shown by an arrow, the position of the turntable 3 is increased. The plurality of placed food items W ₁ and W ₂ having different required heat amounts also rotate and move in the arrow direction, and are heated by the radiant heat from the heater 36 in the moving process. As shown in the figure, the thermistor 52 sets the temperature detection position SP at a position on the movement locus of the food products W ₁ and W ₂ at which the temperature of the food products W ₁ and W ₂ starts to approach the heater 36. _{When 1} or W ₂ proceeds to the lower part of the heater 36 and tries to go to the lower part, the rotation speed of the turntable motor 4 is reduced to prolong the heating time for the low temperature side cooked food.

Next, the details of the heater and turntable motor control when the heater menu is selected by the control unit 20 of the present embodiment will be described in detail with reference to the flowchart of FIG.

That is, first, in step S ₁ , the operation data (menu, finishing adjustment level, set time, etc.) of the door key group 38 or the operation panel unit 26 is read.

Next, in step S ₂ , it is judged whether or not the heater menu is selected by turning on the "toast key" or the "sweets key", and when the heater menu is selected YES, further advances to step S ₃ to S _5, the above-described heater 36, a turntable motor 4, the thermistor 5
Turn on 2 sequentially.

Then, in step S ₆ , subsequently, the temperature of the food W passing through the predetermined detection position SP is set to the thermistor 5 temperature.
It detects from the output of 2.

Thereafter, in step S ₇ , the cooked food W per one turntable rotation detected in step S ₆ is detected.
First, it is determined whether or not there are a plurality of food items W based on the number of changes in the temperature. If the result is YES, the next step S
_{At 8} , it is determined whether the temperature difference ΔT (absolute value) between the plurality of cooked foods W ₁ and W ₂ is equal to or larger than a predetermined reference value ΔTs.

As a result, in the case of YES, there is a difference in the finished state (baked state) between the plurality of cooked foods W ₁ and W ₂ , and for a large cooked food such as a size or quantity or a normal toast. since towards freezing toast is found to be insufficient heating, followed by proceeding to step S _9, the lower portion of the low-temperature side food the heater 36 and thus reduce the rotational speed of the turntable motor 4 from the determination time Heat thoroughly by passing slowly.

[0038] Then, the process proceeds to step S _10, to determine the course of setting the heating time input in step S _1, the heater 36 and the turntable motor when the YES that has elapsed heating time set The control of 4 is ended.

[0039] On the other hand, when the determination NO has not passed the heating time is the set yet again the steps S ₃ ~
The heater and turntable motor control of S ₉ is continued to make the finish levels of the plurality of cooked foods W ₁ and W ₂ uniform.

(2) Second Embodiment Next, FIG. 7 shows the heater control operation of the microwave oven according to the second embodiment of the present invention using the control unit 20 of FIG. The structure of the microwave oven body of this embodiment is the same as that shown in FIGS.

That is, first, in step S ₁ , the operation data (menu, finish adjustment level, set time, etc.) of the door key group 38 or the operation panel unit 26 is read.

Next, in step S ₂ , it is judged whether or not the heater menu is selected by turning on the "toast key", "candy key", etc., and when the heater menu is selected YES, further advances to step S ₃ to S _5, the heater 36, the turntable motor 4, causing sequentially turned oN thermistor 52.

[0043] and, subsequently, in step S _6, FIG. 5
The temperature of the food W passing through the predetermined detection position SP is detected from the output of the thermistor 52.

Then, in step S ₇ , the cooked food W per one turntable rotation detected in step S ₆ is detected.
First, it is determined whether or not there are a plurality of food items W based on the number of changes in the temperature. As a result, when the result is YES, also then the temperature difference ΔT between the plurality of food W in step S ₈ is equal to or greater than a predetermined reference value .DELTA.Ts.

As a result, in the case of YES, there is a difference in the finished state between the plurality of cooked foods W ₁ and W ₂ , and the cooked foods of large size or quantity, or the frozen toasts are not sufficiently heated. since it is recognized as, subsequently proceeds to step S _9, it is sufficiently heated by increasing the heating value of the heater 36 from the determination time by raising the oN / OFF duty ratio of the heater 36.

Thereafter, the process proceeds to step S _10, to determine the course of the set heating time, when the YES that has elapsed heating time is set to end the duty ratio control of the heater and the heater.

[0047] On the other hand, when the NO determination has not elapsed heating time which is the set yet, the plurality of food W ₁ heater and continues the duty ratio control of the heater in the step S ₃ to S ₉ again, Make sure that each finish level of W ₂ is even.

(3) Third Embodiment Next, FIGS. 8 and 9 show the structure and operation of a heater and turntable control system for a microwave oven according to a third embodiment of the present invention.

First, FIG. 8 shows a heater installation structure for the main body of the microwave oven of the present embodiment. Reference numeral 36 in the drawing is moved to one side of the heating chamber 2 as in the first and second embodiments. The heater is installed on the ceiling.

Then, the heater 36 and the turntable 3
The positional relationship between the turntable 3 and the thermistor 52 is set as shown in the drawing. When the turntable 3 is rotationally driven as indicated by an arrow, a plurality of cooked foods W placed on the turntable 3 are driven.
₁ and W ₂ also rotate and move in the direction of the arrow, and are heated by the radiant heat from the heater 36 in the moving process. As shown in the figure, the thermistor 52 in the present embodiment has the cooked product W ₁ , which is slightly above the cooked product mounting surface of the turntable 3.
Each detected temperature T _1, T ₂ of the temperature detection the food comes to a spot SP position detection have a spot SP W _1, W ₂ in a horizontal plane on horizontal center of the movement locus of the W _2, they When the difference between the temperatures T ₁ and T ₂ T ₁ −T ₂ = ΔT is equal to or larger than the predetermined reference value ΔTs, the cooked food (W ₁ or W ₂ ) having a lower temperature among them is the detection spot position SP. Past the heater 3
Turntable motor 4 when it reaches the position just below 6
Is turned off for a predetermined time so that the low temperature side cooked food is sufficiently heated.

Next, the contents of the normal toast / frozen toast simultaneous baking control using the control unit 20 of FIG. 3 will be described in detail with reference to the flowchart of FIG. 9, for example, when the toast menu is selected.

That is, first, in step S ₁ , the operation data (menu, finish adjustment level, etc.) of the door key group 38 or the operation panel unit 26 is read.

Then, as a result, in step S ₂ , it is determined whether the toast menu key 39 is turned on and the toast menu is selected, and the toast menu key 39 is determined.
There If YES the toast menu is selected in the ON state, further goes to step S ₃ to S _5, the heater 36, the turntable motor 4, causing sequentially turned ON thermistor 52.

Then, in step S ₆ , the temperatures of the cooked foods W ₁ and W ₂ passing through the predetermined detection spot position SP are detected from the output of the thermistor 52.

Thereafter, in step S ₇ , the cooked food W per one turntable rotation detected in step S ₆ is detected.
First, it is determined whether or not there are a plurality of food items W based on the number of changes in the temperature. As a result, also the next step when the YES S ₈
Then, it is determined whether or not the temperature difference ΔT between the plurality of food items W ₁ and W ₂ is greater than or equal to a predetermined reference value ΔTs.

As a result, in the case of YES, there is a difference in the finished state (baked state) between the plurality of cooked foods W ₁ and W ₂ , and the frozen toasted cooked food with a large required heat quantity is insufficiently heated. since deemed it, then the process proceeds to step S _9, the said frozen toasted calculated from the determined time is within the predetermined time OFF the turntable motor 4 when it reaches just below portion of the heater 36 With the above heater, the heater 36 performs sufficient concentrated heating.

[0057] Then, the process proceeds to step S _10, to determine the course of the set heating time, when the YES that has elapsed heating time set terminates the heater and the turntable motor control.

[0058] On the other hand, when the determination NO has not elapsed heating time which is the set yet, the plurality of food W ₁ continues the heater and the turntable motor control in step S ₃ to S ₉ again, W Make sure that each of the finishing levels of ₂ are even.

As a result, according to this structure, the normal toast and the frozen toast can be baked at the same time, and the toast key can be made into one key.

(4) Fourth Embodiment Next, FIGS. 10 to 12 show the configuration and operation of a heater control system for a microwave oven according to a fourth embodiment of the present invention.

First, FIGS. 10 and 11 show a heater installation structure for the microwave oven main body of the present embodiment. In the drawings, reference numeral 36a denotes the rear surface of the heating chamber 2 as in the first to third embodiments. The main heater is arranged on the ceiling part closer to one side in the direction, and 36b is an auxiliary heater which is also arranged on the ceiling part opposite to the main heater 36a (front side) and has a relatively small amount of heat generation. Is.

The positional relationship between the heaters 36a, 36b and the turntable 3 and the thermistor 52 is set as shown in FIG. 11, and when the turntable 3 is rotationally driven as indicated by the arrow, the position of the heater is increased. The plurality of food items W ₁ and W ₂ placed on the table are also rotationally driven in the direction of the arrow and are heated by the radiant heat from the main heater 36a during the moving process. The thermistor 52 is, as shown in the figure, the main heater 3 on the movement locus of the food W ₁ or W _2.
6a and the auxiliary heater 36b at the intermediate position of the temperature detection spot S
The food W having P and coming to the detection spot SP position
The temperatures T ₁ and T ₂ of ₁ and W ₂ are detected, respectively, and both temperatures T ₁ and T ₂ are detected.
_When the difference T ₁ -T ₂ = ΔT of ₂ is equal to or larger than the predetermined reference value ΔTs, the cooked food (W ₁ or W ₂ ) having a lower temperature passes through the detection spot position SP and the auxiliary heater. 36
The auxiliary heater 36b is turned on at the time of advancing to the b side to perform auxiliary heating for the low temperature side cooked material.

Next, the details of the heater control when the heater menu is selected using the control unit 20 of FIG. 3 will be described in detail with reference to the flowchart of FIG.

That is, first, in step S ₁ , the operation data (menu, finish adjustment level, set time, etc.) of the door key group 38 or the operation panel unit 26 is read.

Next, in step S ₂ , it is determined whether the "toast key" or the "sweets key" is turned on and the heater menu is selected, and when the heater menu is selected YES, further advances to step S ₃ to S _5, the main heater 36a, a turntable motor 4, causing sequentially turned oN thermistor 52.

Then, in step S ₆ , the temperature of the food W passing through the predetermined detection position P is set to the thermistor 52.
Detected from the output of.

Thereafter, in step S ₇ , the cooked food W per one turntable rotation detected in step S ₆ is detected.
First, it is determined whether or not there are a plurality of food items W based on the number of changes in the temperature. As a result, if YES, then step S
_{At step 8} , it is determined whether the temperature difference ΔT between the plurality of food items W ₁ and W ₂ is equal to or more than the predetermined reference value ΔTs.

As a result, in the case of YES, there is a difference in the finished state between the plurality of cooked foods W ₁ and W ₂ , and the cooked food (or frozen toast) having a larger size or quantity is heated. since it is found to be insufficient, then the process proceeds to step S _9, the increase the heating time from the decision point in the oN the auxiliary heater 36b by passing the lower portion of the auxiliary heater 36b (main heater + auxiliary heater ) And heat it sufficiently.

[0069] Then, the process proceeds to step S _10, to determine the course of the set heating time, when the YES that has elapsed heating time set terminates the main heater and the auxiliary heater control.

[0070] On the other hand, when the determination NO has not elapsed heating time which is the set yet, the plurality of food W ₁ continues the main heater and the auxiliary heater control in step S ₃ to S ₉ again, W Make sure that each of the finishing levels of ₂ are even.

[Brief description of drawings]

FIG. 1 is a front view of a door panel portion of a microwave oven having a heater function according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a housing structure when the door of the microwave oven according to the first embodiment of the present invention is opened.

FIG. 3 is a block diagram showing a control circuit configuration of a main part of the microwave oven.

FIG. 4 is a view showing a heater, a thermistor, and a heater of the microwave oven.
It is a schematic sectional drawing which shows the layout relationship of turntables mutually.

FIG. 5 is a schematic plan view showing a layout relationship among the heater, the thermistor, and the turntable.

FIG. 6 is a flowchart showing a heater control operation by the control unit of the microwave oven.

FIG. 7 is a flowchart showing a heater control operation of the microwave oven according to the second embodiment of the present invention.

FIG. 8 is a schematic plan view showing a layout relationship among a heater, a thermistor, and a turntable of a microwave oven according to a third embodiment of the present invention.

FIG. 9 is a flowchart showing a heater and turntable motor control operation of the microwave oven.

FIG. 10 is a schematic cross-sectional view showing a layout relationship among a heater, a thermistor, and a turntable of a microwave oven according to a fourth embodiment of the present invention.

FIG. 11 is a schematic plan view showing a layout relationship among a heater, a thermistor, and a turntable of the microwave oven.

FIG. 12 is a flowchart showing a heater control operation of the microwave oven.

[Explanation of symbols]

1a is a housing, 2 is a heating chamber, 3 is a turntable, 4 is a turntable motor, 13 is a magnetron, 20 is a control unit, 26 is an operation panel section, 36 is a heater, and 36a
Is a main heater, 36b is an auxiliary heater, and 52 is a thermistor.

Claims (3)

[Claims] 1. A turntable for placing and rotating cooked food, a heater for heating a plurality of cooked food on the turntable by radiant heat, and a plurality of cooked food on the turntable for high frequency. A microwave oven equipped with a high-frequency oscillator and an energization control means for controlling the energization state of the heater or the high-frequency oscillator according to the selected cooking menu, and detects the temperature of each of the plurality of food items on the turntable. When the temperature difference between the temperature sensor and the temperature of each cooking product detected by the temperature sensor is equal to or more than a predetermined value, rotation of the turntable causes the low-temperature cooking product to approach the heater at the time when the low-temperature cooking product approaches the heater. A microwave oven provided with rotation speed control means for reducing or stopping the rotation speed. 2. A turntable for placing and rotating cooked food, a heater for heating the cooked food on the turntable by radiant heat, and a plurality of cooked food on the turntable for high frequency. A microwave oven equipped with a high-frequency oscillator and an energization control means for controlling the energization state of the heater or the high-frequency oscillator according to the selected cooking menu, and detects the temperature of each of the plurality of food items on the turntable. When the temperature difference between the temperature sensor and the temperature of each of the cooked foods detected by the temperature sensor is a predetermined value or more, the rotation of the turntable causes the heat of the heater to be generated when the cold cooked food comes close to the heater. A microwave oven provided with a heating value increase control means for increasing the amount. 3. A turntable for placing and rotating cooked food, a main heater for heating a plurality of cooked food on the turntable by radiant heat, and a plurality of cooked food on the turntable for high frequency. In a microwave oven comprising: a high-frequency oscillator, and an energization control unit that controls an energization state of the heater or the high-frequency oscillator according to a selected cooking menu, an auxiliary heater located on the opposite side of the main heater, A temperature sensor that detects the temperature of each of the plurality of food items on the turntable, and when the temperature difference between the temperatures of the individual food items detected by the temperature sensor is equal to or greater than a predetermined value, the low temperature side is generated by rotating the turntable. And an auxiliary heater control means for energizing the auxiliary heater when the food is close to the auxiliary heater. range.