JP2020106217A - Microwave oven - Google Patents

Abstract

To solve a serious problem that cooking can be easily completed in a short time in heating cooking by a conventional microwave oven and it is convenient but texture, flavor, etc., is easy to be impaired.SOLUTION: In a microwave oven, a power supply device is an inverter power source 30 and a setting operation section includes a course selection part 19 for selecting an earthen pot cooking course in which an earthen pot PO where an object to be heated is put in is accommodated in a heating chamber and heated. A control section 29 newly sets multiple stages of alternative heating conditions with a heating condition defined as a reference via a selecting operation of the course selection part 19 and controls operation of a magnetron 25 in accordance with the multiple stages of alternative heating conditions.SELECTED DRAWING: Figure 4

Description

The present invention relates to a microwave oven, and more particularly, to a microwave oven that can easily and suitably perform cooking using a clay pot.

BACKGROUND ART Conventionally, a microwave oven has been widely known as a device that easily realizes heating of food or a cooking device that does not use fire. Further, a clay pot that can be used in a microwave oven is already known (see Patent Document 1, etc.). For example, when cooking rice in a microwave oven, the clay pot containing rice and water is placed in the heating chamber of the microwave oven, and the heating output and heating time for cooking rice described in the instruction manual of the clay pot are set in the microwave oven. Microwave heating is performed by inputting on the operation unit.

JP, 2014-188156, A

By the way, in general, when cooking food, it is important to control the heat by switching to high heat or low heat according to the cooking process and ingredients. Subtle changes in fire can have a great effect on the finish of cooking.

However, in the conventional microwave oven, as shown in FIG. 11, ON/OFF on the power source side is intermittently repeated, and the set output is changed according to the ON/OFF duty ratio. Therefore, in the conventional microwave oven, microwave supply is intermittently performed according to the set output, and it is difficult to adjust the degree of heating (heating). For this reason, the conventional cooking method using a microwave oven is convenient because it can be easily cooked in a short time, but on the other hand, it has a serious problem that the texture and flavor are easily impaired.

In particular, when cooking rice in a clay pot using a microwave oven, the heating of the earthenware pot is intermittent due to intermittent microwave supply, so the boiling state in the earthenware pot is not maintained continuously, and a delicious delicious rice is cooked. It was difficult to raise.

An object of the present invention is to provide a microwave oven improved by examining the current situation as described above.

The present invention provides a range main body having a heating chamber for housing an object to be heated, a magnetron for microwave heating the object to be heated, a power supply device for operating the magnetron, and a setting for setting heating conditions for the object to be heated. A microwave oven comprising an operation unit and a control unit for controlling the operation of the magnetron according to the heating conditions set by the setting operation unit, wherein the power supply device is an inverter power supply, and the setting operation unit includes the A clay pot containing a material to be heated is provided in the heating chamber, and a course selection unit for selecting a clay pot cooking course to be heated is provided, and the control unit is a selection operation of the course selection unit, based on the heating condition. A plurality of stages of alternative heating conditions that are continuously switched are newly set, and the operation of the magnetron is controlled according to the plurality of stages of alternative heating conditions.

In the microwave oven of the present invention, the setting operation unit includes a menu selection unit capable of selecting a plurality of cooking menus in the clay pot cooking course, and the control unit controls the cooking operation selected by the selection operation of both selection units. The alternative heating conditions of the plurality of stages may be newly set based on the menu and the heating conditions.

Further, in the microwave oven of the present invention, the setting operation unit includes an adjustment control unit that adjusts the adjustment of the heating condition, and the control unit operates the adjustment control unit to operate the alternative heating conditions of the plurality of stages. You may make it adjust the adjustment of.

Furthermore, in the microwave oven of the present invention, the clay pot may be included in the microwave oven body.

According to the microwave oven of the present invention, the heating conditions (for example, the heating output and the heating time) described in the instruction manual of the clay pot are only input in the setting operation unit, and the alternative heating of a plurality of stages is performed based on the input heating conditions. The conditions can be newly set, and the magnetron can be operated using the inverter power supply according to the alternative heating conditions of the multiple stages. That is, the user simply inputs, for example, the output and time, and automatically switches to alternative heating conditions such as low heat number minutes → high heat number minutes → low heat number minutes or medium heat number minutes → low heat number sufficient, The object to be heated can be continuously microwave-heated. Therefore, it is possible to realize a microwave oven that can be easily cooked in a short time and is convenient, but can be cooked without impairing the texture and flavor.

It is a schematic side view which shows the internal structure of a microwave oven. It is an appearance front view of a microwave oven. It is a front view showing an example of an operation panel. It is a functional block diagram of a microwave oven. It is a flow chart which shows a 1st embodiment of clay pot rice cooking control. It is a timing chart which shows 1st Embodiment of clay pot rice cooking control. It is a front view showing an example of an operation panel in a 2nd embodiment. It is a flow chart which shows a 2nd embodiment of clay pot cooking control. It is a flow chart which shows an example of adjustment control. It is explanatory drawing which shows the example of the alternative heating conditions by adjustment control, Comprising: (a) is a flowchart when there is no setting of strength, (b) is a flowchart when strong is designated, (c) 6 is a flowchart when weak is designated. It is a timing chart which shows the output control operation in the conventional microwave oven.

Next, an embodiment of the present invention will be described with reference to the drawings (FIGS. 1 to 10). As shown in FIGS. 1 and 2, a microwave oven 10 according to the present invention includes a rectangular box-shaped range body 11. A heating chamber 12 for accommodating an object to be heated and cooking is formed inside the range main body 11. A front opening of the cooker body 11 that communicates with the heating chamber 12 is openably and closably closed by an opening/closing door 13.

A handle 14 for opening and closing is provided on the top of the opening/closing door 13. An operation panel 15 as a setting operation unit is provided below the opening/closing door 13. On the operation panel 15, for example, the contents and progress of the cooking menu can be displayed and the heating conditions (output, time, cooking menu, etc.) for the object to be heated can be set. The open/close door 13 is opened to place the object to be heated in the heating chamber 12, the open/close door 13 is closed, and then the operation panel 15 is operated, whereby the microwave oven 10 cooks.

As shown in FIG. 3, the operation panel 15 includes a display panel 16 for displaying the contents and progress of the cooking menu, a start button 17 for instructing to start heating, and a cancel button 18 for instructing to stop heating or cancel the setting. , A clay pot button 19 (corresponding to a course selection section) for selecting a clay pot cooking course in which a clay pot PO containing an object to be heated is housed in a heating chamber and heated, a dial type output knob 20 for setting a heating output, A dial type time knob 21 for setting the heating time, a dial type menu knob 22 for selecting a plurality of cooking menus (corresponding to a menu selection section), and heating conditions (for example, heating output and heating time) can be adjusted. A strong button 23 and a weak button 24 are provided as an adjusting unit for adjusting. The various input devices 17 to 24 of the operation panel 15 are not limited to those described above. For example, the dial type may be changed to the button type.

Below the heating chamber 12 in the range main body 11, a magnetron 25 as a generation source (heating source) for generating a microwave, a waveguide 26 for guiding the microwave from the magnetron 25 into the heating chamber 12, and a guide An antenna 27 for diffusing microwaves from the wave tube 26 toward the heating chamber 12 and an antenna motor 28 as a drive source for rotating the antenna 27 are arranged. Further, below the heating chamber 12, a control unit 29 that controls overall control of the microwave oven 10 and an inverter power supply 30 (see FIG. 4) as a power supply device are arranged.

Although not described in detail, the control unit 29 of the microwave oven 10 stores a CPU that executes various arithmetic processes and controls, a communication interface (I/F) unit for connecting to an external terminal, an EPROM, a flash memory, and the like. Means, a RAM for temporarily storing control programs and data, a timer for measuring time, and the like are provided. As shown in FIG. 4, the control unit 29 includes a display panel 16, a start button 17, a cancel button 18, a clay pot button 19, an output knob 20, a time knob 21, a menu knob 22, a strong button 23, and a weak button. 24, and a magnetron 25 and the like via an inverter power supply 30 are electrically connected.

Next, with reference to FIG. 5 and FIG. 6, a first embodiment of cooking a clay pot by the microwave oven 10 will be described. The algorithm shown in the flowcharts of FIG. 5 and subsequent figures is stored as a program in the storage means of the control unit 29, and is read by the RAM and then executed by the CPU. As for the alternative heating conditions of a plurality of stages described later, the values corresponding to the set heating output and heating time are obtained in advance by experiments and the like, and are stored in advance in the storage unit of the control unit 29 as a calculation formula, a control map or a table. Remembered

The earthenware pot button 19 of the first embodiment is set as a button dedicated to earthenware pot rice cooking. The control unit 29 newly sets a plurality of stages of alternative heating conditions based on the heating conditions (heating output and heating time) set by the output knob 20 and the time knob 21 by pressing the clay pot button 19, It is possible to execute the clay pot rice cooker control of controlling the operation of the magnetron 25 according to the alternative heating conditions of a plurality of stages. In the first embodiment, the heating conditions (heating output and heating time) set by the output knob 20 and the time knob 21 in order to realize "beginning choro choro, middle pappa" which is an ideal heating for clay pot rice cooking. Using, the three-stage alternative heating conditions of low heat T1 minutes→high heat T2 minutes→low heat T3 minutes are calculated from a calculation formula or the like stored in advance in the storage means.

When the opening/closing door 13 is opened, the clay pot PO containing rice and water is placed in the heating chamber 12, and after the opening/closing door 13 is closed and the clay pot button 19 is pressed, the clay pot rice cooking control is started. (S01: YES), the character data of "earthenware pot" is displayed on the display panel 16 (S02, see FIG. 3). Next, the heating output and the heating time which are heating conditions are set based on the manipulated variables of the output knob 20 and the time knob 21 (S03 to S04). As the heating condition, for example, the value described in the instruction manual of the clay pot PO is sufficient.

Then, the control unit 29 uses the heating conditions set in step S03, and from the calculation formulas or the like stored in advance in the storage means, the alternative heating in a plurality of stages of three stages of low heat T1 minutes→high heat T2 minutes→low heat T3 minutes. The condition is calculated, and the calculated alternative heating condition is stored (S05). Next, when the start button 17 is pressed (S06), the magnetron 25 is operated by using the inverter power supply 30 to continuously perform microwave heating of low heat T1 minutes→high heat T2 minutes→low heat T3 minutes (S07-). S09). That is, the rice cooker with the microwave oven 10 is executed under the alternative heating condition different from the input heating condition.

For example, when the heating condition is set to “500 W, 12 minutes”, in the first embodiment, it is replaced with the three-stage alternative heating condition of “200 W, 1 minute→600 W, 11 minutes→300 W, 2 minutes”, and the inverter power supply is used. Continuous microwave heating by using 30 is carried out. Note that the alternative heating conditions are not limited to the above example, and may be four or more stages, such as "200 W, 2 minutes→600 W, 11 minutes→300 W, 2 minutes→150 W, 1 minute". It may be in two stages. As long as the earthen pot PO can be used in the microwave oven 10, a commercially available earthen pot may be used, or the earthen pot PO included in the microwave oven body 11 may be used.

According to the above control, the heating conditions (for example, the heating output and the heating time) described in the instruction manual of the clay pot PO are only input on the setting panel 15, and the alternative heating conditions of a plurality of stages are set on the basis of the input heating conditions. Can be newly set, and the magnetron 25 can be operated using the inverter power supply 30 according to the alternative heating conditions of the plurality of stages. That is, the user simply inputs the heating output and the heating time, for example, and automatically switches to alternative heating conditions such as low heat number minutes→high heat number minutes→low heat number minutes or medium heat number minutes→low heat number minutes. Thus, the object to be heated can be continuously microwave-heated. Therefore, it is possible to realize the microwave oven 10 that can be easily cooked in a short time and is convenient, but can be cooked without impairing the texture and flavor.

Next, a second embodiment of cooking a clay pot by the microwave oven 10 will be described with reference to FIGS. 7 and 8.

The earthenware pot button 19 of the second embodiment is set to a button for earthenware pot cooking. The control unit 29 displays the selected cooking menu and the heating conditions (heating output and heating time) set by the output knob 20 and the time knob 21 by pressing the clay pot button 19 and selecting the menu knob 22. It is possible to execute earthenware cooking control in which a plurality of alternative heating conditions are newly set as a reference and the operation of the magnetron 25 is controlled in accordance with the plurality of alternative heating conditions.

In the second embodiment, rice-related alternative heating conditions corresponding to types of rice such as white rice, millet rice, and non-glutinous rice, and types of cooking methods such as rice porridge and cooked rice, as well as meat potatoes, Chikuzen-ni, curry, and stew. Alternative heating conditions related to stewed dishes corresponding to the above are stored in advance in the storage unit of the control unit 29 as a calculation formula, a control map, a table, or the like.

Here, the control aspect of the second embodiment will be described by taking porridge as an example. When the opening/closing door 13 is opened, the clay pot PO containing rice and water is placed in the heating chamber 12, the opening/closing door 13 is closed, and the clay pot button 19 is pressed to start the clay pot cooking control (S11). The character data of "earthenware pot" is displayed on the screen (S12, see FIG. 7). Next, the menu knob 22 is operated to display the character data of "white rice" on the display panel, white rice is selected as a cooking menu, and heating conditions are set (S13).

Then, the control unit 29 uses the heating conditions set by the cooking menu (white rice) selected in step S13 and calculates the low heat T1 minutes→high heat T2 minutes→low heat T3 minutes from the calculation formula stored in the storage means in advance. The alternative heating conditions of a plurality of three stages are obtained and newly set (S14). Next, the start button 17 is pressed (S15), the magnetron 25 is operated using the inverter power supply 30, and continuous microwave heating is performed for low heat T1 minutes→high heat T2 minutes→low heat T3 (S16 to S18). .. That is, the clay pot cooking by the microwave oven 10 is executed under the alternative heating condition different from the heating condition for the inputted cooking menu.

For example, when the heating condition is set to “500 W, 12 minutes” for the input “white rice” which is a cooking menu, it is referred to as “200 W, 1 minute→600 W, 11 minutes→300 W, 2 minutes” in the second embodiment. Instead of the three-stage alternative heating conditions, continuous microwave heating is performed by using the inverter power supply 30. Note that the alternative heating conditions are not limited to the above example, and may be two steps or four or more steps. As long as the earthen pot PO can be used in the microwave oven 10, a commercially available earthen pot may be used, or the earthen pot PO included in the microwave oven body 11 may be used. Further, in the present embodiment, the alternative heating condition is calculated after setting the heating condition from the selected cooking menu, but the alternative heating condition may be calculated directly from the selected cooking menu.

In the present embodiment, the case where white rice is selected as the cooking menu has been described, but when meat and potatoes are selected as the cooking menu, the three-stage alternative heating conditions of “high heat T1 minute→medium heat T2 minute→low heat T3 minute” are used. If you select porridge or boiled chikuzen, you can use two alternative heating conditions: "medium heat T1 minutes → low heat T2 minutes". Furthermore, when curry is selected, a two-stage alternative heating condition of “high heat T1 min→low heat T2 min” can be adopted, and when stew is selected, “medium heat T1 min→low heat T2 min” is selected. Alternative heating conditions can be used. It goes without saying that various patterns can be set as the alternative heating conditions according to the cooking menu.

When controlled as described above, the same operational effects as those of the first embodiment are obtained.

In the first and second embodiments, when the strong button 23 or the weak button 24 is pressed before and after the start button 17 is pressed, the control unit 29 is configured to adjust the increase/decrease of alternative heating conditions in multiple stages. ing. When the strong button 23 or the weak button 24 is pressed after pressing the start button 17, for example, if the strong button 23 or the weak button 24 is pressed within a predetermined time (for example, within 1 minute) from the time when the start button 17 is pressed. It is preferable that the push operation of the button 24 is recognized. The adjustment control is executed as an interrupt process during execution of the clay pot rice cook control or the clay pot cooking control.

In the interrupt process shown in FIG. 9, when the strong button 23 is pressed before and after the start button 17 is pressed (S21: strong), the output of all or some of the alternative heating conditions of a plurality of stages is increased, or all or some of them are increased. The conditions are changed to extend some time (S22). When the weak button 24 is pressed (S21: weak), the output of all or some of the alternative heating conditions of a plurality of stages is reduced, or all or some of the outputs are shortened (S23). In the first or second embodiment, continuous microwave heating is performed under the changed alternative heating conditions.

In the case where three-stage alternative heating conditions of “200 W, 1 minute→600 W, 11 minutes→300 W, 2 minutes” are set, as in the examples shown in the first and second embodiments, FIG. An example of the alternative heating condition that is newly set depending on whether or not the strong button 23 and the weak button 24 are pressed is shown. That is, when neither the strong button 23 nor the weak button 24 is pressed, as shown in FIG. 10A, the alternative heating condition remains “200 W, 1 minute→600 W, 11 minutes→300 W, 2 minutes”. Becomes

When the strong button 23 is pressed, as shown in FIG. 10B, the heating time “11 minutes” in the second stage condition “600 W, 11 minutes” of the alternative heating conditions is “12 minutes”. And the alternative heating condition is changed to “200 W, 1 minute→600 W, 12 minutes→300 W, 2 minutes”. On the other hand, when the weak button 24 is pressed, as shown in FIG. 10C, the heating time “11 minutes” in the second stage condition “600 W, 11 minutes” of the alternative heating conditions is “10 minutes”. Min." and the alternative heating condition is changed to "200 W, 1 min.fwdarw.600 W, 10 min.fwdarw.300 W, 2 min."

In addition, in the example of FIG. 10, the heating time of the second stage of the alternative heating condition is changed based on whether or not each of the strong button 23 and the weak button 24 is pressed. It is only necessary that at least one step of is changed. Further, as in the example of FIG. 10, the heating time in the alternative heating condition is not limited to be changed based on whether or not the strong button 23 and the weak button 24 are pressed, and the heating time and At least one of the heating outputs may be changed.

By controlling in this way, it is possible to easily adjust the completion of cooking and cook with priority on speed.

The configuration of each unit in the present invention is not limited to the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention.

PO clay pot 10 microwave oven 11 range body 12 heating chamber 15 operation panel (setting operation part)
17 Start Button 19 Earthenware Button (Course Selection Section)
20 Output knob 21 Hours knob 22 Menu knob (menu selection section)
23 Strong Button (Adjustment part)
24 Weak button (Adjustment part)
29 control unit 30 inverter power supply

Claims (4)

A range main body having a heating chamber that accommodates an object to be heated, a magnetron that microwave-heats the object to be heated, a power supply device that operates the magnetron, and a setting operation unit that sets heating conditions for the object to be heated, A microwave oven including a control unit that controls the operation of the magnetron according to the heating conditions set by the setting operation unit,
The power supply device is an inverter power supply, the setting operation unit includes a course selection unit for selecting a clay pot cooking course in which the clay pot containing the object to be heated is housed and heated in the heating chamber,
The control unit newly sets a plurality of stages of alternative heating conditions based on the heating conditions by the selection operation of the course selecting unit, and controls the operation of the magnetron according to the plurality of stages of alternative heating conditions.
microwave. The setting operation unit includes a menu selection unit capable of selecting a plurality of cooking menus in the clay pot cooking course,
The control unit newly sets the alternative heating conditions of the plurality of stages based on the selected cooking menu and the heating condition by the selection operation of both the selecting units,
The microwave oven according to claim 1. The setting operation unit includes an adjustment unit for adjusting the heating condition.
The control unit adjusts the adjustment of the alternative heating conditions of the plurality of stages by operating the adjustment adjusting unit,
The microwave oven according to claim 2. The clay pot is included in the range body,
The microwave oven according to claim 1.

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