JP6748387B2 - microwave - Google Patents

Description

The present invention relates to a microwave oven capable of selectively partially heating an object to be heated.

Conventionally, various types of microwave ovens have been known as a microwave oven for heating an object to be heated such as food by applying microwaves.
For example, in Patent Document 1, a turntable is arranged at the bottom of the heating chamber, and an electron provided with a microwave stirrer that stirs the microwaves oscillated from the magnetron and propagated through the waveguide to guide them to the heating chamber. The range is disclosed.
Further, Patent Document 2 discloses a microwave oven provided with a rotary antenna, which is oscillated from a magnetron and radiates a microwave propagating through a waveguide into a heating chamber, below a bottom portion of the heating chamber.

JP, 6-185737, A JP, 2008-166221, A

In recent years, the market size of the so-called snack food industry has expanded, and various pre-made lunch boxes for take-out have come to be sold at convenience stores and the like. Many of the users then heat the lunches they have purchased in a microwave oven at the store, or warm the lunches they brought back with their own microwave oven before eating.

However, in such a lunch box for take-out, generally, several kinds of cooked foods are stored in one container, and it is preferable to heat the cooked food such as cooked rice, grilled food, fried food, simmered food, and fried food before eating. It is served with foods that you like to eat without heating, such as salads, pickles, and fruits. Conventional microwave ovens have been designed and developed so that uneven heating of objects to be heated can be eliminated as much as possible and uniform heating is possible. There was a problem that even things I didn't want to get warmed up.

The present invention has been made in view of the above circumstances, for example, when warming a lunch box for take-out sold at convenience stores or the like, selectively warm what you want to warm, and do not want to warm it. An object of the present invention is to provide a microwave oven capable of selectively partially heating an object to be heated so as not to heat it.

The microwave oven according to the present invention includes a heating chamber that accommodates an object to be heated, a microwave oscillating unit that oscillates microwaves, and a plurality of microwave outputs that are oscillated from the microwave oscillating unit. A power supply unit, the power supply unit is disposed on both the bottom surface side and the top surface side of the heating chamber in a planar manner, and the microwave output radiated from the power supply unit is provided for each of the power supply units. A movable plate that is controlled and is movable up and down is provided on the top surface side or the bottom surface side of the heating chamber, the power feeding unit is arranged in a flat shape on the movable plate, and the side wall portion of the heating chamber can be moved horizontally. The power supply portion is arranged in a planar shape on the side wall portion .
Further, the microwave oven according to the present invention radiates a heating chamber that houses the object to be heated, a microwave oscillating unit that oscillates microwaves, and a microwave output oscillated from the microwave oscillating unit to the heating chamber. A plurality of power supply units, wherein the power supply unit is arranged in a planar shape on at least one of the bottom surface side and the top surface side of the heating chamber, and a micro-radiation unit radiates from the power supply unit. The wave output is controlled for each power feeding unit, the side wall of the heating chamber can be moved in the horizontal direction, and the power feeding unit is arranged in a plane on the side wall.

According to the microwave oven of the present invention, it is possible to selectively partially heat the object to be heated.

It is explanatory drawing which shows the outline of the microwave oven which concerns on 1st embodiment of this invention. It is a perspective view which shows the outline of the principal part of the microwave oven which concerns on 1st embodiment of this invention. It is a perspective view which shows the outline of the principal part of the microwave oven which concerns on 2nd embodiment of this invention. It is a perspective view which shows the outline of the principal part of the modification of the microwave oven which concerns on 2nd embodiment of this invention. It is explanatory drawing which shows the outline of the microwave oven which concerns on 3rd embodiment of this invention. It is explanatory drawing which shows the usage example of the microwave oven which concerns on 3rd embodiment of this invention.

Hereinafter, preferred embodiments of a microwave oven according to the present invention will be described with reference to the drawings.

[First embodiment]
First, a first embodiment of the present invention will be described.
FIG. 1 is an explanatory diagram showing an outline of the microwave oven according to the present embodiment, and schematically shows its configuration. In addition, FIG. 2 is a perspective view showing an outline of a main part of the microwave oven according to the present embodiment, and shows the inside of the heating chamber as viewed obliquely from above the front side.

As shown in these drawings, the microwave oven 1 includes a heating chamber 2 that houses the object to be heated 10, a microwave oscillating unit 3 that oscillates microwaves, and a microwave output oscillated from the microwave oscillating unit 3. A distribution unit 4 for distributing, a plurality of power supply units 5 for radiating the microwave output distributed by the distribution unit 4 to the heating chamber 2, a control unit 6 for controlling the output from the distribution unit 4 to the power supply unit 5, and heating. An image pickup unit 7 for picking up an image of the bottom surface 2a side of the chamber 2 is provided.

The microwave oscillating unit 3 can be configured using an oscillation circuit using a semiconductor element, for example, a Hartley type oscillation circuit, a Colpitts type oscillation circuit, or the like.

The distributor 4 can be configured by using, for example, a Wilkinson distributor. Further, the distribution unit 4 can also be provided with an amplifier circuit or the like for amplifying and outputting the distributed microwave output, if necessary.

The power feeding unit 5 can be configured using, for example, a planar antenna such as a microstrip antenna (patch antenna). In addition, the power feeding unit 5 can also be provided with an isolator or the like that absorbs reflected waves, if necessary.

In the present embodiment, the power feeding unit 5 is arranged in a planar shape on the bottom surface 2a side of the heating chamber 2 (below the bottom surface 2a).
When arranging the plurality of power supply units 5 in a plane below the bottom surface 2a of the heating chamber 2, for example, as shown in FIG. 2, these can be arranged in a grid pattern at predetermined intervals. Not limited. The arrangement of the power supply units 5 is such that the microwaves emitted from the respective power supply units 5 can heat the object 10 to be heated placed on the bottom surface 2a without canceling each other by interfering with each other. It can be appropriately adjusted according to the wavelength and output of the radiated microwave. The number of power supply units 5 to be arranged can also be appropriately adjusted according to the size of the bottom surface 2a and the like.
Note that, in FIG. 2, the power feeding portion 5 arranged in a plane below the bottom surface 2a of the heating chamber 2 is shown by a shaded line (broken line) seen through them.

The image pickup unit 7 can be configured by using an image pickup device such as CCD or CMOS. The imaging unit 7 is attached to the top surface of the heating chamber 2 so that the bottom surface 2a side of the heating chamber 2 can be imaged, and images the object to be heated 10 placed on the bottom surface 2a of the heating chamber 2.

The image pickup data obtained by the image pickup unit 7 picking up the object to be heated 10 can be displayed on the image display device 8 having a touch-panel display screen. FIG. 1 shows an example in which the lunch box for take-out is the object to be heated 10 and the lunch box is displayed on the display screen of the image display device 8.

In the present embodiment, the control unit 6 controls the output from the distribution unit 4 to the power feeding unit 5 based on the imaged data captured by the image capturing unit 7, and the microwave output radiated from the power feeding unit 5 is supplied to each power feeding unit 5. The microwave oven 1 can be configured so as to be controlled by the above. An example of the control will be described below.

For example, when the user stores the object to be heated 10 in the heating chamber 2, the imaging unit 7 images the object to be heated 10 placed on the bottom surface 2 a of the heating chamber 2, and the image data is displayed by the image display device 8. Displayed on the screen.
Then, the user looks at the image of the object to be heated 10 displayed on the display screen of the image display device 8 and traces the area of the object to be heated 10 on the display screen with his/her finger to determine the range. specify.
Note that in FIG. 1, the range designated on the display screen of the image display device 8 is indicated by a dashed line.

In this way, when the range of the portion to be heated of the article to be heated 10 is designated on the display screen of the image display device 8, the control unit 6 uses the position information designated on the display screen to correspond to the range. The output from the distribution unit 4 is controlled so that the microwave output is distributed to the power supply unit 5 located, and the microwave output radiated from the power supply unit 5 is controlled for each power supply unit 5.
In FIG. 1, an arrow indicates an image in which microwaves are radiated from the power feeding unit 5 located corresponding to the designated range on the display screen of the image display device 8.

As a result, microwaves are radiated from the power supply unit 5 located immediately below the portion to be heated of the object to be heated 10, and the portion to be heated of the object to be heated 10 is selectively heated, and the object to be heated 10 is not desired to be heated. The part may not be heated. As a result, when warming lunches for take-out sold at convenience stores etc., warm only those that you prefer to eat after warming and not those that you prefer to eat without warming It becomes possible to do.

Although not particularly shown, the microwave oven 1 can also be equipped with a thermography. By controlling the microwave output radiated from the power feeding unit 5 or controlling the ON/OFF of the microwave oscillating unit 3 according to the temperature change of the object 10 to be heated measured by thermography, When the object 10 is selectively partially heated, the temperature of the portion to be warmed can be appropriately adjusted so as to be an appropriate temperature.

In the present embodiment, the image display device 8 may be included in the microwave oven 1. You may use it.

In the latter case, the microwave oven 1 can be provided with an interface for connecting to such a portable information terminal. The connection method may be a wireless connection via Bluetooth or a wireless LAN, or a wired connection via a universal serial bus or the like. Then, the image data captured by the image capturing unit 7 is displayed on the display screen of the mobile information terminal owned by the user, and the microwave output is output to the power supply unit 5 located corresponding to the range specified on the display screen. The control unit 6 controls the output from the distribution unit 4 so that the power is distributed, and the user installs the application software that controls the microwave output radiated from the power supply unit 5 for each power supply unit 5. It is possible to enable the operation of the microwave oven 1 by the own portable information terminal.

Although the first embodiment of the present invention has been described above, the following modifications can be made in this embodiment.

In the above-described example, the microwave is radiated from the power feeding unit 5 located directly below the portion to be heated of the object to be heated 10 and the microwave is not radiated from the other power feeding units 5; however, the present invention is not limited to this. Not done.
For example, when the object to be heated 10 has a large amount of water and is easily heated by microwaves and a source that has a small amount of water and is difficult to be heated by microwaves are mixed, the output of the microwave radiated to the former Can be weakened to increase the output of the microwave radiated to the latter, so that the strength of the microwave radiated from the power feeding unit 5 can be controlled, and an output control circuit for this can be provided as necessary. It can be provided.

Further, in the above-described example, the image data is displayed on the display screen of the image display device 8, and the microwave output is distributed to the power supply unit 5 located corresponding to the range specified on the display screen. Although the output from the distribution unit 4 is controlled by the unit 6 to control the microwave output radiated from the power feeding unit 5 for each power feeding unit 5, the present invention is not limited to this.
For example, for the various objects 10 to be heated, information such as the shape, size, and position of the portion to be heated is stored in the control unit 6 in advance, and the objects 10 to be heated are stored based on the imaging data captured by the imaging unit 6. The output from the distribution unit 4 is controlled by the control unit 6 so that the microwave output is distributed to the power supply unit 5 located in the specified portion of the object to be heated 10 to be heated. The radiated microwave output can be controlled for each power feeding unit 5.
Further, the image recognition technology is used to identify the part of the object to be heated 10 to be heated, and the control part 6 outputs the output from the distribution part 4 so that the microwave output is distributed to the power feeding part 5 located at the part. It is also possible to control and control the microwave output radiated from the power feeding unit 5 for each power feeding unit 5.
In the case of carrying out in this way, the image display device 8 is unnecessary.

Further, when the object to be heated 10 is heated, the user sets the power feeding unit 5 that radiates microwaves, and the microwave output is distributed to the power feeding unit 5 based on the setting. It is also possible to control the output from the distribution unit 4 by the control unit 6 and control the microwave output radiated from the power feeding unit 5 for each power feeding unit 5.
In such a case, the selective partial heating can be performed without being based on the imaging data captured by the imaging unit 7, and the imaging unit 7 is unnecessary.

Further, in the above example, the plurality of power feeding units 5 are connected to one distribution unit 4 and the output from the distribution unit 4 to the power feeding unit 5 is controlled by the control unit 6, but the present invention is not limited to this. Not done.
Two or more distribution units 4 may be provided to distribute the power supply units 5 to each, and the distribution unit 4 may be omitted and the microwave oscillation units 3 may be directly connected to each of the plurality of power supply units 5 in a one-to-one relationship. Alternatively, the microwave output radiated from the power feeding unit 5 can be controlled for each power feeding unit 5 by connecting via an amplifier circuit or an output control circuit.

Also, by combining with a conventional magnetron type microwave oven, one microwave oven can selectively use partial heating of a heated object and uniform heating of the heated object as needed. You can also

[Second embodiment]
Next, a second embodiment of the present invention will be described.
FIG. 3 is a perspective view schematically showing the main part of the microwave oven according to the present embodiment, which corresponds to FIG. 2 and is a perspective view of the inside of the heating chamber from diagonally above the front side.

In the present embodiment, in addition to the examples shown in FIGS. 1 and 2, a movable plate 2b that can be moved up and down is provided on the top surface side of the heating chamber 2, and the power feeding unit 5 is also formed in a planar shape on the back surface side of the movable plate 2b. It is arranged. The power supply unit 5 arranged on the back side of the movable plate 2b is connected to the distribution unit 4 similarly to the power supply unit 5 arranged below the bottom surface 2a of the heating chamber 2, and the microwave output from the distribution unit 4 is generated. The microwave output that is controlled by the control unit 6 and is radiated from the power feeding unit 5 is controlled for each power feeding unit 5.

Although not particularly shown, the movable plate 2b is provided with a standby position on the top surface side of the heating chamber 2 by, for example, a mechanical drive mechanism using a ball screw or the like, or a fluid pressure type drive mechanism using an air cylinder or the like. It is possible to move up and down between a position close to the object to be heated 10 placed on the bottom surface 2a of the heating chamber 2. The movable plate 2b may be provided with a peep hole (not shown) so as not to prevent the object 7 placed on the bottom surface 2a of the heating chamber 2 from being imaged by the imaging unit 7.

The microwave oven 1 of the present embodiment describes an example of the case where the object 10 to be heated is selectively heated based on the imaged data captured by the imager 7. First, the user described above In the same manner as described above, on the display screen of the image display device 8, the range to be heated of the object 10 to be heated is designated.

When the object 10 to be heated is selectively partially heated, the movable plate 2b is lowered to a position close to the object 10 to be heated, and the power feeding unit 5 arranged on the back side of the movable plate 2b and the heating chamber 2 are provided. With respect to each of the power feeding units 5 disposed below the bottom surface 2a of the, the control unit 6 outputs the microwave output to the power feeding units 5 located corresponding to the range based on the position information specified in the range on the display screen. The output from the distribution unit 4 is controlled so that the power is distributed, and the microwave output radiated from the power supply unit 5 is controlled for each power supply unit 5.

Thereby, it is possible to selectively partially heat the portion to be heated of the object to be heated 10 and prevent the portion of the object to be heated 10 which is not to be heated from being heated. Since microwaves are radiated from the power feeding section 5 located at, even if the object to be heated 10 has a large thickness, it is possible to selectively partially heat the portion to be warmed in the thickness direction. ..

Although the second embodiment of the present invention has been described above, the following modifications can be made in this embodiment.
It is needless to say that the present embodiment can be modified and implemented in the same manner as the modification described in the first embodiment.

In the above example, the movable plate 2b that can be moved up and down is provided on the top surface side of the heating chamber 2, but the movable plate that can be moved up and down is provided on the bottom surface 2a side of the heating chamber 2, and the power supply unit 5 is attached to the movable plate. It can also be arranged in a plane. That is, instead of disposing the power feeding unit 5 below the bottom surface 2 a of the heating chamber 2 in a planar shape, the power feeding unit 5 is disposed above the top surface of the heating chamber 2 in a planar shape and the heating chamber 2 It is also possible to provide a movable plate that can be moved up and down on the bottom surface 2a side, and dispose the power supply unit 5 on the back surface side in a planar manner.

In such a mode, the movable plate is raised when selectively heating the object to be heated 10 and the object to be heated 10 placed thereon is brought close to the top surface of the heating chamber 2. .. Then, among the power feeding parts 5 disposed on the bottom surface 2a side and the top surface side, respectively, the distribution part is arranged so that the microwaves are radiated from the power feeding parts 5 located above and below the portion to be heated of the object to be heated 10. The control unit 6 controls the output from the power supply unit 4 and the microwave output radiated from the power supply unit 5 may be controlled for each power supply unit 5. Even in this case, it is possible to selectively partially heat the thick portion of the article to be heated 10 in the thickness direction without unevenness.

In addition, in the above-mentioned example, the power feeding unit 5 is arranged in a flat shape on the back surface side of the movable plate 2b, but the power feeding unit 5 is on the front surface side of the movable plate 2b (the surface side facing the object to be heated 10). It is sufficient that it is not exposed to the outside, and it can be installed in a state of being embedded in the movable plate 2b.

Further, as shown in FIG. 4, the power supply unit 5 arranged below the bottom surface 2a of the heating chamber 2 may be omitted. In this case, instead of disposing the power feeding unit 5 below the bottom surface 2a of the heating chamber 2, below the bottom surface 2a of the heating chamber 2, as in the conventional microwave oven disclosed in Patent Document 2, It is also possible to provide a rotating antenna that radiates the microwave oscillated from the magnetron and propagated through the waveguide into the heating chamber. As a result, by combining with a conventional magnetron type microwave oven, one microwave oven can selectively use selective partial heating of the heated object and overall uniform heating of the heated object as necessary. Will be possible.

The present embodiment is different from the first embodiment in the points described above, and the other points are common to the first embodiment, and thus the duplicated description will be omitted.

[Third embodiment]
Next, a third embodiment of the present invention will be described.
FIG. 5 is an explanatory diagram showing an outline of the microwave oven according to the present embodiment, and FIG. 6 is an explanatory diagram showing a usage example thereof.

In the above-described second embodiment, the movable plate 2b that can move up and down is provided on the top surface side or the bottom surface side of the heating chamber 2, and the power feeding unit 5 is arranged in a flat shape on the movable plate 2b. In addition, in addition to this, the side wall portion 2c of the heating chamber 2 is made movable in the horizontal direction, and the power feeding portion 5 is also disposed in a planar shape on the side wall portion 2c.

Although the power feeding unit 5 is not shown in FIG. 5, the power feeding unit 5 is connected to the distribution unit 4, and the microwave output from the distribution unit 4 is controlled by the control unit 6 so that The radiated microwave output is controlled for each power feeding unit 5, as in the above-described first and second embodiments. Since the side wall portion 2c of the heating chamber 2 is movable in the horizontal direction and the power feeding portion 5 is arranged in a flat shape on the side wall portion 2c, the second embodiment is common to the second embodiment, and a duplicate description will be omitted.

The microwave oven 1 of the present embodiment configured as described above is effective in the case of selectively partially heating the object to be heated 10 in which the portion to be warmed and the portion not to be warmed are located above and below in the height direction, For example, even when using a bowl of rice, such as seafood bowl, on which sashimi of seafood and the like is served as the article to be heated 10, only the cooked rice can be selectively partially heated.

Specifically, as shown in FIG. 6, the side wall portion 2c is moved in the horizontal direction to bring the side wall portion 2c close to the object to be heated 10, and microwaves are transmitted from the power feeding portion 5 located opposite to something to be heated such as cooked rice. If the control unit 6 controls the microwave output from the distribution unit 4 so as to be radiated and the microwave output radiated from the power feeding unit 5 is controlled for each power feeding unit 5, it warms rice and the like. You can heat only what you want.
Note that, in FIG. 6, an image of microwaves being radiated from the power feeding portion facing the cooked rice is shown by an arrow.

In addition, also in the microwave oven of the present embodiment, when warming a lunch box such as the object 10 to be heated in FIG. 1, the selective operation is performed in the same manner as described in the first and second embodiments described above. It goes without saying that partial heating is possible. Further, it goes without saying that the present embodiment can be modified and implemented in the same manner as the modified examples described in the first and second embodiments.

Although the present invention has been described above with reference to the preferred embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. Nor.

INDUSTRIAL APPLICATION This invention can be applied and utilized for a microwave oven.

DESCRIPTION OF SYMBOLS 1 Microwave oven 2 Heating chamber 2a Bottom part 2b Movable plate 2c Side wall part 3 Microwave oscillating part 4 Distribution part 5 Feeding part 6 Control part 7 Imaging part 8 Image display device

Claims (8)

A heating chamber for containing the object to be heated,
A microwave oscillating unit that oscillates microwaves;
A plurality of power feeding units for radiating the microwave output oscillated from the microwave oscillating unit to the heating chamber,
The power feeding unit is arranged on both the bottom surface side and the top surface side of the heating chamber in a planar manner, and the microwave output radiated from the power feeding unit is controlled for each power feeding unit,
A movable plate that can be raised and lowered is provided on the top surface side or the bottom surface side of the heating chamber, and the power feeding unit is arranged in a flat shape on the movable plate ,
A microwave oven, wherein a side wall portion of the heating chamber is movable in a horizontal direction, and the power feeding portion is arranged in a planar shape on the side wall portion . A heating chamber for containing the object to be heated,
A microwave oscillating unit that oscillates microwaves;
A plurality of power feeding units for radiating the microwave output oscillated from the microwave oscillating unit to the heating chamber,
The power supply unit is disposed in a flat shape on at least one of the bottom surface side and the top surface side of the heating chamber, and a microwave output radiated from the power supply unit is provided for each power supply unit. Controlled,
A microwave oven, wherein a side wall portion of the heating chamber is movable in a horizontal direction, and the power feeding portion is arranged in a planar shape on the side wall portion. The microwave oven according to claim 2 , wherein a movable plate that can move up and down is provided on a top surface side or a bottom surface side of the heating chamber, and the power feeding unit is arranged on the movable plate in a planar shape. A distribution unit that distributes the microwave output oscillated from the microwave oscillation unit and outputs the microwave output to the power feeding unit,
The microwave oven according to any one of claims 1 to 3, and a control unit for controlling the output from the distributor to the power source. An imaging unit for imaging the bottom side of the heating chamber is provided,
The microwave oven according to claim 4 , wherein an output from the distribution unit to the power supply unit is controlled based on imaged data captured by the imager. The imaging data is displayed on an image display device having a touch-panel display screen, and the microwave output is distributed to the power supply unit located corresponding to the range specified on the display screen of the image display device, The microwave oven according to claim 5 , wherein the control unit controls the output from the distribution unit. The microwave oven according to claim 6 , comprising the image display device. The microwave oven according to claim 6 , wherein the image display device is a mobile information terminal having a touch-panel display screen, and an interface connected to the mobile information terminal.