JP7019703B2 - Cooker - Google Patents

Description

The present invention relates to a cooking device.

Conventionally, a heating cooker capable of not only warming an object to be heated but also baking has been proposed. For example, Patent Document 1 discloses a microwave heating device that cooks a heated object by heating the object to be heated by a microwave absorber layer provided on the bottom surface side.

Japan Republished Patent Gazette "WO2009 / 157110 Gazette (Internationally published on December 30, 2009)"

However, in the conventional microwave heating device, since the microwave absorber layer is provided on the bottom surface of the heating chamber, it is possible to cook the entire surface of the object to be heated, but the portion to be heated in the object to be heated is desired. Cannot be selectively heated. Therefore, there arises a problem that it is not possible to perform cooking such as heating or baking only a portion desired by the user.

One aspect of the present invention is to provide a cooking device capable of selectively heating a portion of an object to be heated that is desired to be heated.

In order to solve the above-mentioned problems, the heating cooker according to one aspect of the present invention generates heat by absorbing microwaves and heats an object to be heated. A plurality of radiating parts that radiate waves and a radiating control part that makes the phase of the microwave radiated from the radiating part different in each radiating part are provided, and the microwave heating part has a gap at at least one place. The radiation control unit is formed, and the radiation control unit changes the location where the microwave is radiated in the microwave heating unit, and the microwave heating unit is composed of a plurality of microwave heating elements that generate heat by absorbing the microwave. The plurality of microwave heating elements are arranged apart from each other, and the radiation control unit is characterized in that the intensity distribution of the microwave is different with respect to the plurality of microwave heating elements .

According to one aspect of the present invention, the portion of the object to be heated that is desired to be heated can be selectively heated.

It is a schematic block diagram of the cooking apparatus which concerns on Embodiment 1 of this invention. It is a top view which shows the structural example of the microwave heating part of the heating cooker shown in FIG. It is a block diagram which shows the structure of the cooking apparatus shown in FIG. It is a schematic block diagram of the cooking apparatus of another embodiment of this invention. It is a schematic block diagram of the switching part mounted on the cooking apparatus of another embodiment of this invention. It is a top view which shows the antenna mounted on the microwave oven which is the heating cooker of still another embodiment of this invention, and the wiring thereof.

[Embodiment 1]
Embodiments of the present invention will be described below with reference to the drawings. In the following embodiment, an example in which the configuration of the cooking device of the present invention is applied to the microwave cooking device will be described.

(Composition of microwave heating cooker)
FIG. 1 is a schematic configuration diagram of the microwave heating cooker of the present embodiment. In the present embodiment, the microwave cooking device 1 which is a heating cooker can selectively heat a portion of the heated object X to be heated via a grill container 31 accommodating the heated object X. ..

As shown in FIG. 1, the microwave heating cooker 1 is provided with a first antenna 22 on the top surface and a second antenna 23 on the bottom surface, and is inside the microwave heating cooker 1 from the top surface side and the bottom surface side. It is designed to emit microwaves.

The grill container 31 is provided with a microwave heating element (microwave heating unit) 32 on the top surface and the bottom surface which absorbs microwaves and generates heat. As shown in (a) of FIG. 2, for example, a plurality of microwave heating elements 32 are provided on the top surface of the grill container 31 with gaps 33 at predetermined intervals. That is, at least one gap is provided between the microwave heating elements 32. Similarly, on the bottom surface of the grill container 31, a plurality of microwave heating elements 32 are provided with gaps 33 at predetermined intervals. The arrangement position of the microwave heating element 32 may be appropriately set according to the recipe that can be cooked in the microwave heating cooker 1, and is not particularly limited. The microwave heating element 32 provided on the top surface of the grill container 31 absorbs microwaves radiated by the first antenna 22 installed on the top surface of the microwave heating cooker 1 and generates heat. The microwave heating element 32 provided on the bottom surface of the grill container 31 absorbs microwaves radiated by the first antenna 22 installed on the top surface of the microwave heating cooker 1 and generates heat.

In this way, the microwave heating element 32 that absorbs the microwave and generates heat dissipates heat toward the heated object X housed in the grill container 31 and heats the heated object X. If a plurality of microwave heating elements 32 are provided, the object X to be heated can be divided into a plurality of locations and heated, so that partial heating is possible. Moreover, by providing a predetermined gap between the microwave heating element 32 and the microwave heating element 32, the heated portion and the non-heated portion can be separated, so that the heating of the desired portion can be performed accurately. You can do it well.

As shown in FIG. 1, the microwave heating element 32 is preferably provided at a position facing the first antenna 22 and the second antenna 23. This is because the microwaves radiated by the first antenna 22 and the second antenna 23 can be efficiently received. However, the arrangement position of the microwave heating element 32 is not limited to this, and may be any position as long as it can absorb the microwave emitted by the first antenna 22 and the second antenna 23.

Further, as shown in FIG. 2A, a plurality of microwave heating elements 32 are provided on the top surface and the bottom surface of the grill container 31 so as to be separated from each other, but the present invention is limited to this. is not it. For example, as shown in FIG. 2B, a microwave heating element 32 may be provided on the entire top surface of the grill container 31 to form an opening 32a at a desired location. Similarly, a microwave heating element 32 may be provided on one surface of the bottom surface of the grill container 31 to form an opening 32a at a desired location. The position of forming the opening 32a may be appropriately set according to the recipe that can be cooked in the microwave heating cooker 1, and is not particularly limited.

FIG. 3 is a block diagram showing the configuration of the microwave heating cooker 1. As shown in FIG. 3, the microwave heating cooker 1 includes a control unit 11, an oscillation unit 12, a front-stage amplification unit 13, a first amplification unit 14, a second amplification unit 15, a first phase conversion unit 16, and a second phase. The conversion unit 17, the first reflected power detection unit 18, the second reflected power detection unit 19, the first switching unit 20, the second switching unit 21, the first antenna 22, the second antenna 23, the temperature sensor 24, and the storage unit 25. I have.

The oscillating unit 12 oscillates the microwave and adjusts the oscillation frequency of the microwave and the intensity of the microwave based on the instruction from the control unit 11. The microwave output from the oscillating unit 12 passes through the first amplification unit 13, the first amplification unit 14, the first phase conversion unit 16, the first reflected power detection unit 18, and the first switching unit 20, and then the first antenna. It branches to the path leading to the second antenna 23 via the path leading to 22, the second amplification section 15, the second phase conversion section 17, the second reflected power detection section 19, and the second switching section 21, and each of them is the first antenna. It is radiated from the 22 and the second antenna 23 into the microwave heating cooker 1.

The first amplification unit 14 oscillates in the oscillation unit 12, further amplifies the microwave amplified by the previous stage amplification unit 13, and further amplifies the first phase conversion unit 16, the first reflected power detection unit 18, and the first switching unit 20. Is output to the first antenna 22.

The second amplification unit 15 oscillates in the oscillation unit 12, further amplifies the microwave amplified by the previous stage amplification unit 13, and further amplifies the second phase conversion unit 17, the second reflected power detection unit 19, and the second switching unit 21. Is output to the second antenna 23.

The first phase conversion unit 16 and the second phase conversion unit 17 are controlled by the control unit 11 so that the desired intensity distribution of microwaves is formed with respect to the microwave heating element 32 of the grill container 31. The phase of the microwave emitted from the antenna 22 and the second antenna 23 is converted.

The first reflected power detection unit 18 and the second reflected power detection unit 19 receive the reflected wave of the microwave radiated to the microwave heating element 32, convert it into reflected power, and convert the converted reflected power into the control unit 11. Send to. The control unit 11 identifies the heated state of the object X to be heated in the grill container 31 from the reflected power from the first reflected power detection unit 18 and the second reflected power detection unit 19, and generates the optimum microwave for cooking. , Control to radiate to the object X to be heated.

The first switching unit 20 and the second switching unit 21 switch the microwave supply destination according to the instruction from the control unit 11. The microwave switching destination in the first switching unit 20 may be one first antenna 22 or two or more first antennas 22. Similarly, the microwave switching destination in the second switching unit 21 may be one second antenna 23 or two or more second antennas 23. That is, the first switching unit 20 and the second switching unit 21 both perform one-to-many switching. In this embodiment, the microwave switching in the first switching unit 20 and the second switching unit 21 is realized by using a switch that switches ON / OFF based on the instruction from the control unit 11. However, the switching of microwaves in the first switching unit 20 and the second switching unit 21 is not limited to the above example, and may be realized by other methods. The realization of the other method will be described in another embodiment described later.

The control unit 11 controls the operations of the oscillation unit 12, the first phase conversion unit 16, the second phase conversion unit 17, the first switching unit 20, and the second switching unit 21. As a result, the control unit 11 supplies the microwave by the first switching unit 20 and the second switching unit 21 as to how the first phase conversion unit 16 and the second phase conversion unit 17 perform the phase conversion of the microwave. It is decided how to select the first antenna 22 and the second antenna 23, which are the destinations.

The storage unit 25 is composed of a non-volatile memory, and the control unit 11 controls the operations of the oscillation unit 12, the first phase conversion unit 16, the second phase conversion unit 17, the first switching unit 20, and the second switching unit 21. Various information used by the control unit 11 such as information used in the case is stored.

Further, the microwave heating cooker 1 is further provided with a temperature sensor 24 that detects the temperature of the microwave heating element 32 shown in FIG. 1 in a non-contact manner. The temperature sensor 24 transmits the detection result to the control unit 11. The control unit 11 emits microwaves from the first antenna 22 and the second antenna 23 so that the temperature of the microwave heating element 32 becomes a desired temperature (preset temperature) from the detection result transmitted from the temperature sensor 24. Control.

(Heating control of the object to be heated)
Here, the heating control of the object X to be heated will be described below with reference to FIG.

As shown in FIG. 1, the grill container 31 containing the object to be heated X is placed in the microwave heating cooker 1 and the object to be heated X is baked and cooked.

The microwave heating element 32 installed on the top surface of the grill container 31 absorbs microwaves radiated by the first antenna 22 installed on the top surface of the microwave heating cooker 1 and generates heat. At this time, when baking is performed at a desired position of the object X to be heated, the control unit 11 shown in FIG. 1 so as to apply microwaves to the microwave heating element 32 near the desired position of the object X to be heated. Converts the phase of the microwave to the first phase conversion unit 16 and the second phase conversion unit 17, and for the first switching unit 20 and the second switching unit 21, which antenna of the first antenna 22 group, Which antenna in the second antenna 23 group is to be used is selected, and microwaves are emitted from the selected first antenna 22 and the second antenna 23.

The microwaves phase-converted by the first phase conversion unit 16 and the second phase conversion unit 17 are radiated with a phase shift by a predetermined value when radiated from each of the first antenna 22 and each second antenna 23. To. Therefore, by combining each of the first antennas 22 and each of the second antennas 23, the directivity of the radiated microwave can be changed. This makes it possible to appropriately radiate microwaves to the desired microwave heating element 32.

(effect)
According to the microwave heating cooker 1 having the above configuration, the supply destination of the microwave from the first amplification unit 14 and the second amplification unit 15 is switched to any one of the plurality of first antennas 22 and the second antenna 23. The number of the first amplification unit 14 and the second amplification unit 15 is smaller than the number of the first antenna 22 and the second antenna 23, which are the radiation units. In this embodiment, four first antennas 22 correspond to one first amplification unit 14, and four second antennas 23 correspond to one second amplification unit 15. As a result, it is possible to suppress an increase in cost of the microwave cooking device 1 which is a cooking device due to an increase in the number of amplification units.

Therefore, even if the number of the first antenna 22 and the second antenna 23 is increased in order to selectively heat the portion of the object X to be cooked, the number of amplifiers does not increase, so that the number of antennas and the amplifier is 1. It becomes possible to provide the microwave heating cooker 1 which is cheaper than the case of one-to-one.

[Embodiment 2]
Other embodiments of the present invention will be described below. For convenience of explanation, the same reference numerals are given to the members having the same functions as the members described in the above-described embodiment, and the description thereof will not be repeated.

(Composition of microwave heating cooker)
FIG. 4 is a schematic configuration diagram of the microwave heating cooker of the present embodiment. In the present embodiment, the microwave cooking device 2 which is a heating cooker has almost the same configuration as the microwave cooking device 1 of the first embodiment, and is different in that it includes a microwave absorber 41. Is.

As shown in FIG. 4, the microwave absorber 41 is provided on the top surface and the bottom surface of the microwave heating cooker 2, and emits microwaves radiated by the first antenna 22 and the second antenna 23. It is designed to absorb. Specifically, the microwave absorber 41 absorbs the reflected wave of the microwave that is not absorbed by the microwave heating element 32 and is reflected in the refrigerator of the microwave heating cooker 2. The microwave absorber 41 is made of, for example, carbon.

In this way, by absorbing the reflected wave of the microwave by the microwave absorber 41, it is possible to reduce the reflection of the microwave to the first antenna 22 and the second antenna 23. As a result, the semiconductor elements constituting the first antenna 22 and the second antenna 23 can be suppressed from being damaged by the reflection of microwaves.

As shown in FIG. 4, the microwave absorber 41 is provided on the top surface and the bottom surface of the microwave heating cooker 2, but the present invention is not limited to this, and for example, the first antenna is provided. 22. The second antenna 23 may be provided on a surface (for example, a side surface in the refrigerator) where the second antenna 23 is not provided, as long as it is provided within the microwave radiation range of the first antenna 22 and the second antenna 23. good. In particular, it is preferable that the microwave absorber 41 is arranged at a position where the reflection to the first antenna 22 and the second antenna 23 can be reduced as much as possible. Further, the number of arrangements of the microwave absorbers 41 is not particularly limited.

[Embodiment 3]
Still other embodiments of the present invention will be described below. For convenience of explanation, the same reference numerals are given to the members having the same functions as the members described in the above-described embodiment, and the description thereof will not be repeated.

In the first and second embodiments, the example in which the microwave switching in the first switching unit 20 and the second switching unit 21 is realized by using a switch only for ON / OFF switching has been described, but this embodiment has been described. Now, an example of switching microwaves using a circulator will be described.

(Switching section)
FIG. 5 is a diagram showing a schematic configuration of a switching unit 51 according to the present embodiment. The switching unit 51 is composed of three first circulators 52 connected to each first antenna 22 and three second circulators 53 connected to each second antenna 23. That is, the functions of the first switching unit 20 in the first and second embodiments are realized by the three first circulators 52, and the functions of the second switching unit 21 are realized by the three second circulators 53.

The three first circulators 52 are connected in series, and the microwave amplified by the first amplification unit 14 is input to the first stage circulator 52. Further, the three second circulators 53 are connected in series, and the microwave amplified by the second amplification unit 15 is input to the second circulator 53 in the first stage.

Here, the frequency characteristics of the four first antennas 22 connected to the three first circulators 52 need to be different. Similarly, the frequency characteristics of the four second antennas 23 connected to the three second circulators 53 also need to be different. However, the first antenna 22 and the second antenna 23 may have the same frequency characteristics or may have different frequency characteristics.

(Switching operation)
The first antenna 22 and the second antenna 23 radiate only microwaves having matching frequency characteristics. This is used to determine the antenna to which the microwave is supplied.

In the switching unit 51 shown in FIG. 5, the frequency characteristics of the first antenna 22 are set to 2.4 GHz, 2.45 GHz, 2.5 GHz, and 2.55 GHz in order from the first antenna 22 in the first stage. Similarly, the frequency characteristics of the second antenna 23 are set to 2.4 GHz, 2.45 GHz, 2.5 GHz, and 2.55 GHz in order from the second antenna 23 in the first stage.

Here, when the frequency characteristic of the microwave amplified by the first amplification unit 14 is 2.5 GHz, the microwave is first sent to the first antenna 22 connected to the first circulator 52 in the first stage. However, since the frequency characteristic of the first antenna 22 is 2.4 GHz, it is not emitted but is reflected by the first antenna 22 and returns to the first circulator 52. The microwave returned to the first circulator 52 is sent to the first antenna 22 connected to the first circulator 52 in the next stage. However, since the frequency characteristic of the first antenna 22 here is 2.45 GHz, it is not emitted but is reflected by the first antenna 22 and returns to the first circulator 52. The microwave returned to the first circulator 52 is sent to the first antenna 22 connected to the first circulator 52 in the next stage. Since the frequency characteristic of the first antenna 22 here is 2.5 GHz, microwaves having a frequency characteristic of 2.5 GHz are radiated from the first antenna 22. In this way, microwaves are radiated by the first antenna 22 whose frequency characteristics match. That is, the microwave amplified by the first amplification unit 14 moves in the direction of the arrow shown in FIG. 4 until the second antenna 23 having the matching frequency characteristics is found, and finally the first antenna having the matching frequency characteristics. It is radiated from 22.

Similarly, the microwave amplified by the second amplification unit 15 also moves in the direction of the arrow shown in FIG. 5 until the second antenna 23 having the matching frequency characteristics is found, and finally the second antenna having the matching frequency characteristics. It is radiated from the antenna 23.

As described above, by switching the emission destination of the microwave using the frequency characteristics of the first antenna 22 and the second antenna 23, the first switching unit 20 and the second switching unit 21 of the first and second embodiments 1 and 2 have. It is not necessary to switch ON / OFF based on the instruction from the control unit 11. Therefore, it is not necessary to provide a circuit or the like for receiving a control signal from the control unit 11, and it is possible to switch the microwave destination with a very simple configuration.

[Embodiment 4]
Still other embodiments of the present invention will be described below. For convenience of explanation, the same reference numerals are given to the members having the same functions as the members described in the above-described embodiment, and the description thereof will not be repeated.

In the first embodiment, the first phase conversion unit 16 and the second phase conversion unit 17 are used in order to change the directivity of the emitted microwave, that is, to shift the phase of the microwave. In the embodiment, an example of shifting the phase of the microwave without using the first phase conversion unit 16 and the second phase conversion unit 17 will be described.

FIG. 6 is a plan view showing an antenna mounted on a microwave oven, which is a cooking device of the present embodiment, and its wiring.

As shown in FIG. 6, wiring 61 for transmitting microwaves is connected to each of the four first antennas 22 arranged in the heating chamber 1a, and similarly, micros are connected to the four second antennas 23. Wiring 62 for transmitting waves is connected to each other.

The four wirings 61 have different lengths. That is, the length from the first amplification unit 14 to the first antenna 22 is different in each first antenna 22. Similarly, the four wirings 62 have different lengths. That is, the length from the second amplification unit 15 to the first antenna 22 is different in each second antenna 23.

By making the length of the wiring 61 different, the phase of the microwave supplied to each first antenna 22 can be shifted. Similarly, by making the length of the wiring 62 different, the phase of the microwave supplied to the second antenna 23 can be shifted. This makes it possible to give directivity to the microwaves radiated from the first antenna 22 and the second antenna 23. The wirings 61 and 62 are preferably wirings that are patterned according to the desired directivity.

As described above, since the phase of the microwave supplied by each wiring can be shifted only by changing the lengths of the wirings 61 and 62, the first used in the microwave heating cooker 1 of the first embodiment is described. The phase conversion unit 16 and the second phase conversion unit 17 are unnecessary.

〔summary〕
The heating cooker according to the first aspect of the present invention has a microwave heating unit (microwave heating element 32) that generates heat by absorbing microwaves and heats the object X to be heated, and the microwave heating unit (microwave heating unit). The phases of the microwaves radiated from the plurality of radiating portions (first antenna 22, second antenna 23) radiating microwaves to the heating element 32) and the radiating portions (first antenna 22, second antenna 23) are shown. The microwave heating unit (microwave heating element 32) is provided with a radiation control unit (control unit 11) that is different in each radiation unit (first antenna 22, second antenna 23), and the microwave heating unit (microwave heating element 32) has a gap at least one place. It is characterized in that 33 is formed.

According to the above configuration, the directivity of the microwave can be changed by the combination of the radiating parts by making the phase of the microwave radiated from the radiating part different in each radiating part. As a result, it is possible to apply the microwave only to the desired portion of the microwave heat generating portion, so that the portion to be heated in the object to be heated can be selectively heated. Moreover, since the microwave heat generating portion has a gap formed at at least one place, the gap portion is not heated, so that the partial heating can be performed more effectively.

In the heating cooker according to the second aspect of the present invention, in the first aspect, the microwave heating unit is composed of a plurality of microwave heating elements 32 that generate heat by absorbing microwaves, and the plurality of microwave heating elements are composed of the plurality of microwave heating elements 32. , May be spaced apart from each other.

According to the above configuration, since the plurality of microwave heating elements are arranged apart from each other, it is possible to clearly distinguish between the heated portion and the unheated portion in the microwave heating unit. As a result, if the directivity of the microwave emitted by the radiating part is used to apply the microwave only to the desired microwave heating element, it is possible to perform partial heating of the object to be heated more accurately. Become.

In the heating cooker according to the third aspect of the present invention, in the first or second aspect, the temperature sensor 24 for detecting the temperature of the microwave heating unit (microwave heating element 32) is further provided, and the radiation control unit (control unit) is further provided. 11) may control radiation from the radiation unit (first antenna 22, second antenna 23) so that the temperature detected by the temperature sensor 24 becomes a preset temperature.

According to the above configuration, by controlling the temperature of the microwave heating element to be a preset temperature, it is possible to reliably heat the portion to be heated in the object to be heated.

The heating cooker according to the fourth aspect of the present invention is a microwave absorber that absorbs microwaves radiated by the radiating unit (first antenna 22, second antenna 23) in any one of the above aspects 1 to 3. 41 may be provided within the microwave radiation range by the radiation unit (first antenna 22, second antenna 23).

According to the above configuration, since the microwave absorber can absorb the microwave emitted by the radiating portion, the reflection of the microwave to the radiating portion can be reduced. As a result, it is possible to prevent the semiconductor element constituting the radiation portion from being damaged by the reflection of microwaves.

In the heating cooker according to the fifth aspect of the present invention, in any one of the above aspects 1 to 4, the plurality of radiating portions (first antenna 22 and second antenna 23) have different frequency characteristics. Switching to switch the supply destination of the microwave amplified by the amplification unit (first amplification unit 14, second amplification unit 15) according to the frequency characteristics of each radiation unit (first antenna 22, second antenna 23). The unit 51 may be provided.

According to the above configuration, it is possible to easily switch the microwave supply destination by changing the frequency characteristic of the microwave supplied to the amplifier.

In the cooking apparatus according to the sixth aspect of the present invention, in the fifth aspect, the switching unit 51 has a circulator (52, 53) connected to each of the radiating units (first antenna 22, second antenna 23). You may be prepared.

According to the above configuration, by using the circulator, only the microwave having the frequency characteristic matching the frequency characteristic of the radiating part is supplied from the microwave amplified from the amplifier, and as a result, it is simple. Microwaves can be radiated from the desired radiating unit in the configuration.

In the heating cooker according to the seventh aspect of the present invention, in the fifth or sixth aspect, the wiring (61, The length of 62) may be different for each radiation unit (first antenna 22, second antenna 23).

According to the above configuration, the length of the wiring for supplying microwaves from the switching unit to the radiation unit is different for each radiation unit, so that the phase of the microwave supplied to each radiation unit is shifted. Can be done. This makes it possible to radiate microwaves with directivity. In this case, since the phase of the microwave flowing through each wiring is changed only by changing the length of the wiring, it is not necessary to separately provide a phase conversion unit for converting the phase of the microwave.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Further, by combining the technical means disclosed in each embodiment, new technical features can be formed.

1 and 2 microwave heating cooker (heating cooker)
11 Control unit (radiation control unit)
12 Oscillator 13 Pre-stage amplification unit 14 First amplification unit 15 Second amplification unit 16 First phase conversion unit 17 Second phase conversion unit 18 First reflected power detection unit 19 Second reflected power detection unit 20 First switching unit (switching) Department)
21 Second switching unit (switching unit)
22 First antenna (radiating part)
23 Second antenna (radiating part)
24 Temperature sensor 25 Storage unit 31 Grill container 32 Microwave heating element (microwave heating element)
32a Opening 33 Gap 41 Microwave absorber 51 Switching part 52 First circulator 53 Second circulator 61, 62 Wiring X Heated object

Claims (6)

A microwave heating unit that generates heat by absorbing microwaves and heats the object to be heated,
A plurality of radiating parts that radiate microwaves to the microwave heating part,
It is provided with a radiation control unit that makes the phase of the microwave emitted from the radiation unit different in each radiation unit.
In the microwave heat generating portion, a gap is formed at least in one place.
The radiation control unit changes the location where microwaves are radiated in the microwave heat generation unit.
The microwave heating unit is composed of a plurality of microwave heating elements that generate heat by absorbing microwaves.
Multiple microwave heating elements are spaced apart from each other and
The radiation control unit is a cooking device characterized in that the intensity distribution of microwaves is different with respect to the plurality of microwave heating elements . A temperature sensor that detects the temperature of the microwave heating unit is further provided.
The radiation control unit is
The heating cooker according to claim 1 , wherein the radiation is controlled from the radiation unit so that the temperature detected by the temperature sensor becomes a preset temperature. The cooking apparatus according to claim 1 or 2 , wherein the microwave absorber that absorbs the microwave emitted by the radiating portion is provided within the microwave radiating range of the radiating portion. The above-mentioned plurality of radiation units have different frequency characteristics, and the above-mentioned plurality of radiation units have different frequency characteristics.
The cooking according to any one of claims 1 to 3 , further comprising a switching unit that switches the supply destination of the microwave amplified by the amplification unit according to the frequency characteristics of each radiation unit. vessel. The above switching unit
The cooker according to claim 4 , further comprising a circulator connected to each of the radiating portions. The cooker according to claim 4 or 5 , wherein the length of the wiring for supplying microwaves from the switching unit to the radiating unit is different for each radiating unit.

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