JPH11337079A - Microwave oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure having a steaming function and a kneading function without generally increasing a vertical dimension and effectively use a heating chamber. SOLUTION: A boiler 31 and a vessel 45 can be detachably set to a heating chamber 3. Water stored in a boiler chamber 33 is heated by microwave oscillated by magnetron 7 to generate steam. Glutinous rice 55 housed in the vessel 45 is steamed by the steam. After steaming, a vane 50 is rotated through a belt 28, a rotation transmitting member 24 and a rotary shaft 39 to knead the glutinous rice 55 and make rice cakes. An entire vertical dimension may not be increased, which is different from a device in which a boiler is attached below a heating chamber. Further, when the boiler 31 and the vessel 45 are not used, the heating chamber 3 can be effectively used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a microwave oven having a steaming function and a kneading function.

[0002]

Conventionally, microwave ovens having a function of making rice cakes have been considered.
This method uses a cooking method without steaming the glutinous rice, and kneads the cooked glutinous rice to make rice cakes. In such a case, since the cooking method is employed, there is a disadvantage that the moisture content of the completed rice cake is inevitably increased.

On the other hand, for example, an electric oven having a function of making rice cake has a function of steaming glutinous rice and a function of kneading the steamed glutinous rice. In this apparatus, a boiler is provided below the bottom of the heating chamber, and a container that is detachably set in the heating chamber and a kneading blade is provided in the container. In this one, water is put into the boiler, and glutinous rice previously immersed in water is stored in the container, and steam is generated by heating the water in the boiler with a heater. Steam the glutinous rice in the container. Thereafter, by rotating the blades in the container and kneading the steamed glutinous rice, rice cakes can be made.

[0004] However, in the configuration described above,
Because the boiler is configured below the heating chamber,
As a result, there is a problem that the overall vertical dimension becomes large.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a structure having a steaming function and a kneading function without increasing the overall vertical dimension. Another object of the present invention is to provide a microwave oven that can use a heating chamber effectively.

[0006]

In order to achieve the above object, a microwave oven according to the present invention comprises a heating chamber, a magnetron for supplying microwaves into the heating chamber, a material having an open upper surface and a radio wave transmitting material. A boiler which is detachably set in the heating chamber; and a boiler which is removably mounted on an upper portion of the boiler so as to close an upper opening of the boiler chamber, and a boiler is provided on a bottom portion of the boiler. A container having a steam hole communicating with the upper opening of the chamber and having an object to be cooked stored therein, and a boiler substantially vertically penetrating the boiler at a substantially central portion thereof, and an upper end portion protruding into the container; A rotatable shaft that is rotatably provided in a state where the rotatable shaft is rotated by a motor, and is mounted on an upper end portion of the rotatable shaft in the container, and is rotated by the rotatable shaft to rotate the rotatable shaft. It is characterized in that it has and a blade knead the food.

In the above-described apparatus, when the magnetron is driven in a state in which water is stored in the boiler chamber and an object to be cooked, for example, glutinous rice previously immersed in water is accommodated in the container, the magnetron is driven by the magnetron. The water in the boiler room is heated by the oscillating microwave to generate steam, and the steam steams the glutinous rice stored in the container. Then, when the blades in the container are rotated by the motor in a state where the glutinous rice is steamed, the glue is kneaded by the blades and rice cakes are made.

[0008] In the above configuration, since the boiler is configured to be detachable from the heating chamber, unlike the case where the boiler is provided below the heating chamber, it is possible to prevent the whole from increasing in the vertical direction. Can be. Further, since the boiler and the container can be taken in and out of the heating chamber, the heating chamber can be widely used when the boiler and the container are not used.

In the present invention, it is preferable that the container has a structure that does not transmit radio waves. In this case, when the food in the container is steamed, the food can be prevented from being heated by the microwave as much as possible.

[0010] An excitation port for supplying microwaves from the magnetron to the heating chamber is preferably provided at a position corresponding to the boiler in the lower part of the heating chamber. In such a case, the water in the boiler room can be more favorably heated by the microwaves emitted from the excitation port.

Further, in the present invention, by driving the magnetron, the water stored in the boiler room is heated by microwaves to generate steam, and the cooking object stored in the container is steamed by the steam. Performing a process, and thereafter, by driving a motor, rotating the blades via a rotary shaft, kneading the object to be cooked in the container with the blades, a configuration including control means for controlling to perform a kneading process; and Is preferred.

[0012] In such a configuration, if water is stored in the boiler room and the object to be cooked is stored in the container, the operation can be performed automatically from steaming to kneading the object to be kneaded. it can.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, in FIGS. 1 and 2, an inner box 2 is provided inside a main body 1 of a microwave oven, and the inside of the inner box 2 is a heating chamber 3. The heating chamber 3 has an open front, and the front opening is opened and closed by a door 4 shown in FIG. In the main body 1, the right side of the inner box 2 is a machine room 5, and an operation panel 6 is provided on a front portion of the machine room 5. A magnetron 7 is provided on the right side wall of the inner box 2 on the machine room 5 side, and a cooling fan 8a for cooling the magnetron 7 and a high-voltage transformer (not shown) and a fan 8a Motor 8 for rotating the motor
b is provided.

A ventilation duct 10 is provided between the magnetron 7 and a ventilation hole 9 formed in the right side wall of the inner box 2, and an opening 10a is formed in the ventilation duct 10. Further, the damper device 1 is provided in the ventilation duct 10.
One damper plate 12 is rotatably provided via a shaft 12a, and the damper plate 12 is provided with a damper motor 13
(See FIG. 7).

In this case, when the damper plate 12 is located at the first position shown by a solid line in FIG. 4, the vent hole 9 is closed by the damper plate 12, and the opening 10a of the ventilation duct 10 is opened. As a result, the wind from the fan 8a entering the ventilation duct 10 flows from the opening 10a to the outside of the ventilation duct 10 as indicated by an arrow A1, and does not flow into the heating chamber 3. In the state where the damper plate 12 is located at the second position shown by the two-dot chain line in FIG.
The ventilation hole 9 is opened and the opening 10 a of the ventilation duct 10 is closed by the damper plate 12.
As shown by 2, the air is supplied from the ventilation hole 9 into the heating chamber 3.

In the lower part of the right side wall of the inner box 2, an excitation port 14 is formed in a portion corresponding to a position below the magnetron 7, and a waveguide 15 is provided between the excitation port 14 and the magnetron 7. Have been.

At a substantially central portion of the bottom of the inner box 2, a fitting projection 16 is provided so as to be one step higher than other portions, and a hole 17 is formed at the center of the fitting projection 16. Is formed. On the lower surface side of the bottom of the inner box 2, a mounting plate 18 is mounted below the fitting projection 16, and a space 19 is formed between the mounting plate 18 and the fitting projection 16. Have been. On the lower surface side of the mounting plate 18, an RT motor 21 serving as a turntable driving motor is provided via a motor mounting plate 20.
Is attached.

The rotation shaft 21a of the RT motor 21 is directed upward, and a hole 22 formed in the mounting plate 18 is formed.
And the hole 17 of the inner box 2. Its rotation axis 2
1a, bearings 2 supported by motor mounting plate 20
The rotation transmitting member 24 is rotatably provided through the third transmission member 3. The rotation transmitting member 24 includes a cylindrical portion 24a inserted into the holes 22 and 17 together with the rotary shaft 21a, and a cylindrical portion 24.
and a pulley portion 24b disposed so as to be located below the mounting plate 18 at a lower end portion of the cylindrical portion 24a.
5 are provided integrally. This coupling part 25
Is composed of a plurality of uneven portions.

A motor 26 for driving the blades is provided below the machine room 4. A drive pulley 27 is attached to a rotation shaft 26 a directed below the motor 26, and a belt 28 is stretched between the drive pulley 27 and the pulley portion 24 b of the rotation transmission member 24. Further, an exhaust duct 29 is provided on the upper part of the left side wall of the inner box 2, and a steam sensor 30 is provided in the exhaust duct 29.

The boiler 31 is made of a synthetic resin, which is a radio wave transmitting material, and has an annular boiler chamber 33 around a central cylindrical portion 32 as shown in FIG.
The fitting recess 34 formed in the lower portion is fitted to the fitting projection 16 in the heating chamber 3 so that the fitting recess 34 is detachably set in the heating chamber 3. With the boiler 31 set in the heating chamber 3, the boiler chamber 33 corresponds to the excitation port 14. The upper surface of the boiler chamber 33 is open, and a step portion 35 is formed at a portion corresponding to the outer peripheral portion of the upper surface opening 33a in the boiler chamber 33, as shown in FIG.
The step portion 35 is provided with a seal member 36. Further, a plurality of convex portions 37 are provided on an outer peripheral portion of the boiler chamber 33 so as to be located above the step portion 35 and face inward so as to face the seal member 36 from above. .

A rotary shaft 39 is rotatably inserted into the cylindrical portion 32 via a bearing 38, and a coupling portion 40 constituting a connected portion is integrally formed at the lower end of the rotary shaft 39. Is provided. The coupling portion 40 is constituted by a plurality of concave and convex portions, and is connected to the coupling portion 25 of the rotation transmitting member 24. A stopper ring 41 is provided on the upper part of the rotating shaft 39 to prevent the stopper from coming off. A seal member 42 is provided between the outer peripheral surface of the upper part of the rotating shaft 39 and the inner peripheral surface of the upper part of the cylindrical part 32. Have been. The upper end of the rotating shaft 39 protrudes above the cylindrical portion 32 and the seal member 42.

A container 45 is detachably mounted on the upper part of the boiler 31. This container 45
For example, it is made of aluminum and does not transmit radio waves. A large number of steam holes 46 are formed at the bottom of the container 45, and an insertion hole 47 is formed at substantially the center, and a ring-shaped leg 48 is provided at the outer periphery of the lower surface of the bottom of the container 45. Have been. As shown in FIG. 5, the leg portion 48 is provided with a plurality of inclined convex portions 49 on an outer peripheral portion of a pressing portion 48a which comes into close contact with the seal member 36 from above.

Here, when mounting the container 45 on the top of the boiler 31, first, the insertion hole 4 in the bottom of the container 45 is used.
7, the upper end of the rotating shaft 39 is inserted, and the pressing portion 48a of the leg 48 is brought into contact with the upper surface of the seal member 36. Then, the container 45 is rotated in the direction of arrow B in FIGS. Then, each inclined convex portion 49 enters the lower side of the corresponding convex portion 37, and the inclined convex portion 49
Is pushed downward by the convex portion 37, whereby the pressing portion 48 a comes into close contact with the seal member 36. Thereby, the container 45 can be attached to the upper part of the boiler 31.

At this time, the lower surface of the bottom of the container 45 is in close contact with the seal member 42 at the periphery of the insertion hole 47.
In the state where the container 45 is attached to the upper portion of the boiler 31 in this manner, the upper end of the rotating shaft 39 projects to the bottom in the container 45, and the blade 50 is detachably attached to the upper end of the rotating shaft 39. It is designed to be worn.

On the other hand, FIG. 7 schematically shows an electrical configuration of a portion related to the description of the present invention. In FIG. 7, a control circuit 51 constituting the control means includes:
Includes microcomputer. This control circuit 51
Are input with signals from the various switch input units 52 provided on the operation panel and signals from the steam sensor 30. In this case, the switch input unit 52 includes, although not shown, a start key for starting cooking, a key for rice cake constituting an operation unit for rice cake, and an operation unit for adjusting hardness of the completed rice cake. It is provided with a hardness adjusting key to be configured, a steaming cooking key to constitute operation means dedicated to steaming, and the like.

The control circuit 51 controls the display unit 53 on the basis of the input signals of the switch input unit 52 and the vapor sensor 30 and a program provided in advance, and controls the magnetron 7 via the drive circuit 54, respectively. ,
Fan motor 8b, damper motor 13, RT motor 2
1 and a function of controlling the motor 26 for the blades.

Next, the operation of the above configuration will be described. When making rice cake, the user first soaks the glutinous rice in water,
Prepare a well-watered one. Then, outside the heating chamber 3, the boiler chamber 33 of the boiler 31
And an appropriate amount of water (200-300 c
c) is put, and in this state, the container 45 is attached to the upper portion of the boiler 31 via the legs 48 as described above. Next, the blades 50 are attached to the upper end of the rotating shaft 39 in the container 45, and thereafter, the drained glutinous rice (the object to be cooked) is stored in the container 45, and the surface thereof is flattened. .

The boiler 31 and the container 45
Into the heating chamber 3, the fitting concave portion 34 of the boiler 31 is fitted to the fitting convex portion 16 of the heating chamber 3, and the coupling portion 40 at the lower end of the rotating shaft 39 is rotated at the bottom of the heating chamber 3. It is in a state of being connected to the coupling part 25 of the member 24. Thereafter, while the door 4 is closed, the rice cake key on the operation panel 6 is operated and the start key is operated.

Then, the control circuit 51 first drives the magnetron 7 and also drives the fan motor 8b to execute the steaming process. In this case, the damper plate 12 of the damper device 11 is located at a first position shown by a solid line in FIG. By driving the magnetron 7, the microwave oscillated from the magnetron 7 is supplied from the excitation port 14 into the heating chamber 3, and the water stored in the boiler chamber 33 is heated by the microwave. become.

The fan 8a is rotated by driving the fan motor 8b, and the magnetron 7 is cooled by the fan 8a. At this time, the ventilation hole 9 in the right side wall of the inner box 2 is closed by the damper plate 12, so that the wind that has entered the ventilation duct 10 flows to the outside of the ventilation duct 10 from the opening 10a, and the heating is performed. Room 3
It is not supplied inside.

At the beginning of the steaming step, the output of the magnetron 7 is set to the maximum output, for example, 500 W. When the water in the boiler chamber 33 is heated, steam will eventually be generated in the boiler chamber 33,
The vapor passes through a vapor hole 46 at the bottom of the container 45 and passes through the container 4.
5 is supplied to the glutinous rice 55, and the glutinous rice 55 is steamed by the steam.

At this time, between the boiler 31 and the container 45, portions corresponding to the peripheral portion of the rotating shaft 39 at the center and the outer peripheral portion of the upper opening 33a of the boiler chamber 33 are sealed by sealing members 36 and 42, respectively. Since it is sealed, the steam generated in the boiler chamber 33 is supplied to the container 45 only from the steam hole 46 without leaking to the other, so that the glutinous rice 55 can be satisfactorily steamed. Further, in this case, since the excitation port 14 is a lower portion corresponding to the boiler chamber 33, water in the boiler chamber 33 can be favorably heated by the microwave. Moreover, since the container 45 is made of a material that does not transmit radio waves, the sticky rice 55 in the container 45 is prevented from being directly heated by the microwave as much as possible.

A part of the steam flowing into the heating chamber 3 through the container 45 is discharged to the outside through the exhaust duct 29. At this time, the detection value of the steam sensor 30 provided in the exhaust duct 29 becomes a certain value or more, and the control circuit 51
When the control circuit 51 detects the generation of steam, the control circuit 51
The output of the magnetron 7 is controlled, for example, to about 200 W so that the temperature of the magnet 5 can be maintained at about 98 ° C. or more for about 20 minutes by steam.

The control circuit 51 controls the steam sensor 30
If it is determined based on the detected value that the amount of generated steam is lower than the preset value, the operation of the magnetron 7 is stopped, the blade motor 26 is driven, and the damper device 11 is driven. Then, the damper motor 13 is driven to rotate the damper plate 12 to the second position shown by the two-dot chain line in FIG. 4 to execute the kneading process.

When the blade motor 26 is driven, the rotation transmitting member 24 is rotated via the belt 28, and the blade 50 is rotated together with the rotary shaft 39 connected to the rotation transmitting member 24. The steamed sticky rice 55 in the container 45 is kneaded. In this case, the blade 50 is rotated at a rotation speed of, for example, 500 to 600 rpm.

At this time, since the damper plate 12 is located at the second position where the ventilation hole 9 is opened, the ventilation duct 10
The wind passing through the inside is supplied from the ventilation hole 9 into the heating chamber 3,
Accordingly, the steam in the heating chamber 3 is discharged from the exhaust duct 29 to the outside. During this kneading process,
When the detection value of the steam sensor 30 becomes equal to or less than a predetermined value and the control circuit 51 determines that the amount of steam in the heating chamber 3 has become lower than a preset value, the damper plate 12 is moved to the first position. And the supply of air from the vent hole 9 into the heating chamber 3 is stopped.

When the time of the kneading step reaches a preset time, the motor 26 and the fan motor 8 are turned on.
The operation of a is stopped, and the cooking is ended. Thereby, rice cakes can be made.

As described above, when adjusting the hardness of the rice cake, the user operates the hardness adjustment key. The control circuit 51 increases the amount of air supplied into the heating chamber 3 at the time of the kneading process when “hardness” is set more than usual based on the operation of the hardness adjustment key. When the amount of air supplied to the heating chamber 3 increases, the amount of water in the heating chamber 3 decreases as the amount of steam discharged to the outside increases, and as a result, the rice cake becomes firm.

When "soft" is set based on the operation of the hardness adjusting key, the control circuit 51 reduces the amount of air supplied to the heating chamber 3 during the kneading process. I do. When the amount of air supplied into the heating chamber 3 decreases, the amount of steam discharged to the outside decreases,
Accordingly, the amount of water in the heating chamber 3 increases, resulting in a soft rice cake.

On the other hand, when steam cooking, for example, bowl cooking, is performed, an appropriate amount of water is put into the boiler room 33 of the boiler 31, and a steaming shelf 60 is set in the container 45, as shown in FIG. At the same time, the bowl 61 containing the contents is placed on the shelf 60, and the boiler 31 and the container 45 are set in the heating chamber 3 in this state. At this time, the blade 50 may or may not be mounted on the upper end of the rotating shaft 39. Then, the lid 62 is put on the upper surface of the container 45.

Thereafter, with the door 4 closed, the steaming key on the operation panel 6 is operated, and then the start key is operated. Then, the control circuit 51 drives the magnetron 7 and also drives the fan motor 8b to execute the steaming process. Thereby, the food in the bowl 61 is steamed by the steam. Then, the control circuit 51 controls the steam sensor 3
When the elapsed time from the detection of the generation of steam by 0 reaches a preset time, the operation of the magnetron 7 and the fan motor 8b is stopped. Thereby, the steam cooking is completed.

In this embodiment, it is also possible to use only the function of kneading dough, for example, without using the steaming function.

According to the above-described embodiment, the following operation and effect can be obtained. First, while storing water in the boiler chamber 33 and operating a rice cake key in a state in which a cooking object, for example, glutinous rice 55 previously immersed in water is stored in a container 45, the magnetron 7 Steam is generated from the water in the boiler room 33 by the oscillating microwave, and the glue rice 55 in the container 45 can be steamed by the steam. Then, with the glutinous rice 55 steamed,
By rotating the blades 50 in the container 45 by the motor 26, the glutinous rice 55 can be kneaded to make rice cake.

In this case, since the glutinous rice is steamed, the amount of water in the completed mochi can be made to be an appropriate amount as compared with, for example, the case of kneading cooked glutinous rice to make a good mochi. become.

Further, in this case, the process from the steaming process to the kneading process can be automatically performed by the control circuit 51, which is convenient.

In the above-described embodiment, since the boiler 31 is configured to be detachable from the heating chamber 3, unlike the case in which a boiler is provided below the heating chamber 3, the entire boiler 31 is arranged in the vertical direction. Can be suppressed. Further, since the boiler 31 and the container 45 can be put in and taken out of the heating chamber 3, the heating chamber 3 can be widely used when the boiler 31 and the container 45 are not used.

Further, an RT motor 21 is provided at the bottom of the heating chamber 3.
The rotation transmission member 24 rotated by the motor 26 is rotatably provided around the rotation shaft 21a of the rotation shaft 21a, and a rotation shaft 39 for rotating the blade 50 is connected to the rotation transmission member 24. Therefore, the rotation shaft 39 and thus the blade 50 can be satisfactorily rotated with a relatively simple configuration.

In the steaming process, once the water in the boiler chamber 33 boils, a large output is not required as the magnetron 7 for heating the water. Therefore,
In the present embodiment, in the steaming step, the output of the magnetron 7 is set to the maximum output at the beginning so as to boil early, and after boiling once, the output is reduced to maintain the boiling state. By doing so, useless power consumption can be prevented as much as possible.

By determining the timing of switching from the steaming process to the kneading process on the basis of the detection result of the steam sensor 30, the timing can be set satisfactorily, and the rice cake can be satisfactorily made.

In the steaming step, air is not introduced into the heating chamber 3 and in the kneading step, the heating chamber 3
By controlling the air to flow into the inside, the amount of water in the heating chamber 3 can be favorably controlled, and the amount of water in the completed rice cake can be made moderate, so that a good rice cake can be produced.

Further, in the present embodiment, using a boiler 31 and a container 45 for making rice cakes, steaming tea bowl steamed steamed bean paste, steamed bean jam, meat bean jam, or sweet potato, etc.
Steam cooking can also be performed. In this case, by using the lid 62, the steam cooking can be performed more favorably.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. As the motor for rotating the blade 50 for kneading, the RT motor 21 can be used also.

As long as the container 45 does not transmit radio waves, the container 45 may have a two-layer structure of, for example, a material that transmits radio waves and a material that does not transmit radio waves, instead of using aluminum as a whole.

In the steaming step, the time when the output of the magnetron 7 is reduced from the maximum output can be determined based on the elapsed time from the start of the steaming step. Further, at the time of the kneading step, the time at which the amount of air to be introduced into the heating chamber 3 is reduced may be determined based on the elapsed time from the start of the kneading step being a preset time.

Further, when adjusting the hardness of the rice cake, the output of the magnetron 7 may be controlled during the kneading step. Further, in the case of steam cooking, the time when the driving of the magnetron 7 is stopped is determined by the steam sensor 30.
Can be determined on the basis of the detection result.

[0056]

As is clear from the above description, according to the present invention, the following effects can be obtained. According to the microwave oven of claim 1, for example, glutinous rice to be cooked is steamed with steam, and the steamed glutinous rice is kneaded with the wings, so that a steaming function and a kneading function can be obtained. You can make mochi. And since the boiler is configured to be removable from the heating chamber, unlike the case where a boiler is provided below the heating chamber,
It is possible to suppress the whole from increasing in the vertical direction. Further, since the boiler and the container can be taken in and out of the heating chamber, the heating chamber can be widely used when the boiler and the container are not used.

According to the microwave oven of the second aspect, the rotating shaft and thus the blade can be satisfactorily rotated with a relatively simple configuration. According to the microwave oven of the third aspect, the steam generated in the boiler room is supplied to the inside of the container only from the steam hole without leaking to the other, so that the food in the container can be steamed well. it can.

According to the microwave oven of the fourth aspect, when water in the boiler room is heated by the microwave, it is possible to prevent the food in the container from being directly heated by the microwave as much as possible. According to the microwave oven of the fifth aspect, the microwave supplied from the excitation port into the heating chamber can satisfactorily heat the water in the boiler chamber, and the cooking object contained in the container above the boiler is heated by the microwave. Direct heating can be prevented as much as possible.

According to the microwave oven of the sixth aspect, the control means can automatically perform the steps from the steaming step to the kneading step, which is convenient. According to the microwave oven of the seventh aspect, wasteful consumption of electric power in the steaming process can be suppressed as much as possible. According to the microwave oven of the eighth aspect, the output of the magnetron during the steaming process can be controlled well. According to the microwave oven of the ninth aspect, the timing of switching from the steaming process to the kneading process can be controlled well.

According to the microwave oven of the tenth aspect, the amount of water in the heating chamber can be controlled well, and the amount of water in the completed object can be made moderate, so that the object can be satisfactorily produced. it can. According to the microwave oven of the eleventh aspect, the air entering the heating chamber can use a fan for cooling the magnetron, and the air entering the heating chamber can be favorably controlled by the damper device.

According to the microwave oven of the twelfth aspect, it is possible to make the water content of the object to be cooked, for example, the mochi proper, and to make the object to be cooked well. According to the microwave oven of the thirteenth aspect, the hardness of the object to be cooked can be adjusted. According to the microwave oven of the fourteenth aspect, it is possible to satisfactorily perform only the steam cooking.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, and is a longitudinal sectional front view showing a state in which a boiler and a container are set in a heating chamber.

FIG. 2 is a longitudinal sectional front view of a state before setting a boiler and a container in a heating chamber.

FIG. 3 is a longitudinal sectional front view in a state where main parts are separated.

FIG. 4 is a cross-sectional plan view of a main part.

FIG. 5 is a cutaway perspective view showing a connection portion between a boiler and a leg of a container.

FIG. 6 is a cutaway front view of a connection portion between a boiler and a leg of a container.

FIG. 7 is a block diagram showing an electrical configuration.

FIG. 8 is a diagram corresponding to FIG. 1 when steam cooking is performed.

[Explanation of symbols]

1 is a main body, 2 is an inner box, 3 is a heating room, 7 is a magnetron,
8a is a fan, 11 is a damper device, 12 is a damper plate, 1
4 is an excitation port, 21 is an RT motor (turntable driving motor), 21a is a rotating shaft, 24 is a rotation transmitting member, 25
Is a coupling part (connection part), 26 is a motor, 28 is a belt, 30 is a steam sensor, 31 is a boiler, 33 is a boiler room, 33a is an upper surface opening, 36 is a sealing member, 39
Is a rotating shaft, 40 is a coupling part (connected part),
42 is a sealing member, 45 is a container, 46 is a steam hole, 48 is a leg, 49 is an inclined convex portion, 50 is a blade, 51 is a control circuit (control means), 52 is a switch input portion (operation for adjusting hardness). Means, operating means for steaming cooking), 55 indicates glutinous rice (thing to be cooked).

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI H05B 6/78 H05B 6/78 Z

Claims (14)

[Claims] 1. A heating chamber, a magnetron for supplying microwaves to the heating chamber, and a boiler chamber having an open upper surface and made of a radio wave permeable material, are detachably set in the heating chamber. A boiler, which is removably mounted on the top of the boiler so as to close the top opening of the boiler chamber, and has a steam hole at the bottom that communicates with the top opening of the boiler chamber. A container to be accommodated, a rotating shaft that is rotatably provided in a state where an upper end portion of the boiler projects vertically into a substantially central portion of the boiler and protrudes into the container, and is rotated by a motor; And a blade attached to an upper end of the rotating shaft and rotated by the rotating shaft to knead the food in the container. 2. A rotation transmitting member, which is provided at the bottom of the heating chamber so as to be rotatable around a rotation axis of a turntable driving motor, and has a coupling portion at an upper portion, and rotates the rotation transmitting member. A rotating shaft, wherein the rotating shaft has a connected portion connected to the connecting portion while being set in the heating chamber at a lower portion, and is configured to be rotated via the rotation transmitting member. The microwave oven according to claim 1, wherein 3. A seal member is provided between the boiler and the container at a portion corresponding to a peripheral portion of the rotary shaft and a portion corresponding to an outer peripheral portion of an upper opening of the boiler chamber. 2. The microwave oven according to claim 1, wherein the microwave is supplied into the container only from the hole. 4. The microwave oven according to claim 1, wherein the container is configured not to transmit radio waves. 5. The microwave oven according to claim 1, wherein an excitation port for supplying microwaves from the magnetron to the heating chamber is located at a position corresponding to the boiler in a lower part of the heating chamber. 6. By driving a magnetron,
The water stored in the boiler room is heated by microwaves to generate steam, and a steaming step of steaming the food contained in the container with the steam is performed.After that, the motor is driven to rotate the rotating shaft. 2. The microwave oven according to claim 1, further comprising control means for rotating the blades through the blades and kneading the object in the container with the blades to control the kneading process. 7. The microwave oven according to claim 6, wherein the control means controls the magnetron output to be initially large during the steaming step, and thereafter to decrease the output. 8. A steam sensor for detecting steam generated in the heating chamber, wherein the control means determines a time at which the output of the magnetron is reduced from a large level in the steaming step based on a detection result of the steam sensor or an elapsed time. The microwave oven according to claim 7, wherein the microwave oven is used. 9. A steam sensor for detecting steam generated in a heating chamber, wherein the control means determines a timing of switching from a steaming process to a kneading process based on a detection result of the steam sensor. 6. The microwave oven according to 6. 10. The control means for preventing air from entering the heating chamber during the steaming step and controlling the air to enter the heating chamber during the kneading step.
The microwave oven as described. 11. The air blown into the heating chamber is a wind of a fan for cooling the magnetron, and a damper device for controlling the wind of the fan into the heating chamber is provided. microwave. 12. A steam sensor for detecting steam generated in a heating chamber, wherein the control means is configured such that, in a kneading step, a steam amount obtained based on a detection result of the steam sensor is lower than a preset value. 2. The method according to claim 1, wherein the amount of air introduced into the heating chamber is reduced when the time has elapsed or when the elapsed time from the start of the kneading process has reached a preset time.
The microwave oven according to 0. 13. A hardness adjusting operation means for adjusting the hardness of the finished food, wherein the control means is configured to operate the magnetron in the kneading process based on the operation of the hardness adjusting operation means. 11. The microwave oven according to claim 10, wherein the output of the microwave oven or the amount of wind introduced into the heating chamber is controlled. 14. A steam sensor for detecting steam generated in the heating chamber, and an operating means for steaming cooking. The control means controls the magnetron based on the operation of the operating means for steaming cooking. By driving, the water stored in the boiler room is heated by microwaves to generate steam, and thereafter, the timing for stopping the driving of the magnetron is determined by detecting the generation of steam by the steam sensor. 2. The microwave oven according to claim 1, wherein the control is performed based on an elapsed time or a detection result of a steam sensor.