JPH0316571B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a high-frequency heating device equipped with a memory key, and more particularly to one improved so that programmed heating data can be corrected in accordance with the weight of the object to be heated.

Conventional configuration and its problems Conventional high-frequency heating equipment configured so that heating data can be programmed using a memory key,
It is widely used in practical applications. For example, in the case of microwave ovens, advantages such as the ease of operation of the memory key and the ability to obtain the finish desired by the user have been recognized, and the microwave oven is gradually penetrating the market under the nicknames "home memory" and "home key."

The memory key is a key that has a function that allows the user to program heating data, and is a key that allows the user to freely preset the magnetron output, heating time, etc. Therefore, user preferences are clearly reflected in the finishing temperature of sake cans and milk.
Menus that are difficult to automate even with sensors can be easily handled with automatic heating using memory keys.
For example, in the case of sake cans, the finishing temperature is so low that even the human tongue can discern subtle differences of about 5 degrees Celsius.
Moreover, the finishing temperature itself is highly dependent on each person's preference, and when used, the finish will be affected by the shape of the sake, the storage temperature of the sake (at room temperature or refrigerated), and variations in microwave output from microwave oven to microwave oven. There are many factors that give Therefore, sake cans were one of the menu items unsuitable for automatic heating using sensors. However, from a different point of view, when a user makes a sake can, the structure is generally the same, and the storage temperature and microwave output do not vary significantly in the home. In other words, by limiting the number of users, it is possible to easily and skillfully kettle sake using a memory key with a fixed output and heating time.

The only drawback to such memory keys is that they must be limited in quantity. When you program ``1 minute'' on ``high heat'' in the memory key, even if you can successfully heat 1 cup of sake with this, the 2-cup can or half cup won't heat up to the appropriate temperature. This was unavoidable since the memory key did not use a sensor.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a memory key that can handle quantities.

Structure of the Invention In order to achieve the above object, the high frequency heating device of the present invention is equipped with a memory key in which heating data can be programmed, and a weight sensor, and when presetting heating data for heating a certain object to be heated, In addition to setting heating data such as output and heating time, the object to be heated is placed on a mounting plate, and the weight data is detected by a weight sensor and automatically stored, so there is no need to limit the quantity. A memory key can be realized.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a perspective view of a high-frequency heating device according to the present invention. A door body 2 is provided on the front surface of the main body 1 so as to be openable and closable, and an operation panel 3 is disposed thereon. A memory key 4 is provided on the operation panel 3, and the user can program arbitrary heating data according to the object to be heated.

FIG. 2 is a detailed view of the main parts of such an operation panel. The above-mentioned memory key 4 is arranged on the right half of the keyboard, and in the example shown in the figure, the "sake can" key is placed from the top.
and "milk" are already programmed. A manual key 5 is arranged on the left half of the keyboard, allowing selection of the heat source and its output. "Electric strong" means high output microwave heating.
``Electric Weak'' allows you to select the low output, ``Grill'' allows you to select the grill heater, ``Oven Preheat'' allows you to preheat when cooking in the oven, and ``Oven'' allows you to select the grilling mode.

6 is a timer knob, which is used to set the heating time. 7 is an up/down key for setting the baking temperature of the oven.

When heating manually, first select one of the manual keys 5, then press the timer knob 6.
Alternatively, use the up/down keys 7 to set the heating time or temperature associated with that heating.
Such heating data is displayed on the display section 8, and heating is started by operating the start key 9. A cancel key 10 is used to stop or cancel this heating.

Next, the memory heating operation using the memory key 4 will be explained. When one of the memory keys 4 is selected and, for example, "Sake Can" is pressed,
The heating data already programmed is displayed on the display section 8. Then, by pressing the start key 9, you can easily start drinking sake. At this time, the control unit measures the weight of the object to be heated using a weight sensor, and corrects the programmed heating data according to the weight. That is, if heating data for one cup of sake is programmed, and an attempt is made to heat two cups of sake at once, the weight sensor detects this and automatically extends the heating time.

Now, how to program heating data in memory heating will be explained using FIG. 3. First, select memory key 4. In the example shown in the figure, the "Sake Can" key has been selected (A). The user writes a desired menu name or pastes a sticker on the home key 4. Initially, nothing is programmed into this key, so nothing other than "memory" appears on the display section 8.

Next, the heat source is selected using the manual key 5. In the example shown in the figure, "strong electric", that is, high output of microwave heating, was selected (B). At this time, the object to be heated and the structure are placed on a placing plate in the heating chamber, and the weight of the object is detected by a weight sensor.

Next, the heating time is set using the timer knob 6. In the example shown in the figure, "1 minute" is set (C). Through the above operations, the output and heating time are programmed, and the weight detected by the weight sensor is also automatically stored. For example, if only one bottle of sake is placed on the tray, its total weight is stored.

By storing heating data and weight data in pairs in this way, it is possible to heat a different amount in the memory than when programmed. In the example in the figure, we are trying to heat two memory sticks (D).
At this time, if you use the same container as when you programmed it, the weight sensor can detect that the weight of the totsukuri is double. Therefore, the programmed heating time of ``1 minute'' is doubled to ``2 minutes.'' With this correction, the memory that can handle the amount of
The key can be realized.

Note that in the example shown in the figure, the heating time is doubled if the weight is doubled, but in general, with microwave heating, there are many objects to be heated in which the heating time does not double even if the quantity is doubled. Many foods are about 1.5 to 1.8 times more expensive. This means that the microwave output varies depending on the amount of load (load characteristics).
It depends on the cause. Therefore, when the quantity is doubled, it is also useful to increase the heating time by 1.7 times, for example.

Next, the configuration of the high frequency heating device will be explained. In FIG. 4, the memory on the operation panel 3
The memory heating command input from the key 4 is decoded by the control unit 14. Then, the control unit 14 reads out the corresponding heating data already programmed from the memory 15. At this time, the memory 15 is a nonvolatile memory, such as Matsushita's MN1218A, but the control unit 14 may be configured with a microcomputer and its built-in RAM may be used. This may be selected depending on whether or not the programmed memory heating data is to be retained during a power outage or when the power plug is removed.

On the other hand, the control unit 14 uses the weight sensor 13 to
The weight of the object to be heated 11 placed on the placing plate 12 in the heating chamber 16 is measured. This data is the detection circuit 1
7 to the control unit 14, and the control unit 14 compares this weight data with certain weight data stored in the memory 15, and corrects and calculates the heating time. The result of this calculation is displayed on the display section 8. Here, the weight sensor 13 can use a strain gauge, a capacitive detection method, or a vibration detection method that focuses on the fact that the natural frequency of the mounting plate 12 changes depending on the weight of the object to be heated 11. Note that this mounting tray 12 is rotationally driven by a motor 18,
Improves uneven cooking during microwave heating.

Now, when heating is started by the above control, the control section 14 starts supplying power to the magnetron, which is the high frequency generating means 20, via the driver 19. The blower 21 cools the magnetron 20 and
The inside of the heating chamber 16 is ventilated, and the ventilation air is discharged to the outside of the aircraft from the exhaust guide 22. Once the calculated heating time has been counted, the power supply to the magnetron 20 is stopped and the heating is completed.

An electric heater 23 is further disposed within the heating chamber 16 and is used as a heat source for grilling or oven. Of course, grilling and oven cooking can also be programmed in the memory key 4, and at this time, the heating temperature is stored in addition to the output, time, and weight as heating data. A thermistor 24 is a temperature sensor, and is used to control the temperature inside the heating chamber 16.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) The user can freely program the heating data without worrying about the quantity, and there is no need to manually input the quantity, so the operation is extremely simple.

(2) The object to be heated can be handled by its total weight including the container, and so-called taring is not required, making the operation simple.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main body of a high-frequency heating device showing an embodiment of the present invention, FIG. 2 is a detailed view of the operation panel,
FIG. 3 is a conceptual diagram showing an example of the procedure for operating the home key, and FIG. 4 is a block diagram showing an example of the configuration. 4...Memory key, 11...Heated object, 13
... Weight sensor, 14 ... Control unit, 15 ... Memory, 16 ... Heating chamber, 20 ... High frequency generation means.

Claims (1)

[Claims] 1. A heating chamber in which an object to be heated is placed, a high frequency generation means coupled to this heating chamber, a weight sensor that detects the weight of the object to be heated, and a control section that controls power supply to the high frequency generation means. , a storage means capable of storing heating data such as a desired power supply time to the high frequency generation means in advance, and a memory key for reading the heating data from the storage means, and the control section is configured to store heating data such as a desired power supply time to the high frequency generation means. When desired heating data is to be stored, the weight of the object to be heated placed in the heating chamber is detected using the weight sensor, and is stored in the storage means as a pair with the set heating data. - When a key is pressed, the heating data and the weight data are read from the storage means, and the weight sensor is used to detect the weight of the object to be heated that is placed in the heating chamber at that time; A high-frequency heating device configured to compare the detected weight with the weight data read from the storage means and correct the heating data.