JPS6044570B2 - microwave oven - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention aims to provide a microwave oven that is easy to operate.

Generally, a microwave oven equipped with a microprocessor forms a heating cycle by setting a desired combination of heating output, heating time, heating temperature, etc., and further forms a heating method by combining a plurality of these heating cycles.

Microwave ovens that implement a heating method that includes a large number of setting elements are complicated to operate, making them unsuitable for home use. The present invention has been made in view of this point, and will be described below with reference to one embodiment.

1 is a microwave oven main body, 2 is a door for opening and closing the high-frequency heating chamber 3, 4 is a door handle, and 5 is an operation/display section.

The operation display section 5 is formed by patterning a conductive film such as Nesa film on the back side of a plate made of dielectric material, and is provided with a large number of so-called touch keys that can be activated simply by touching them. The microwave oven main body 1 includes an input circuit 6 for inputting signals from the touch keys of the operation display section 5, and a main control circuit 7 for performing desired heating based on the signals from the input circuit. , a first storage section with a small capacity within the main control circuit, that is, a storage circuit 8, which has a relatively large capacity and can store signals from the main control circuit 7 and retrieve the stored signals when desired. An operating circuit 10 is provided for actually driving a high frequency oscillator (not shown), etc. using signals from a second storage section, that is, a storage device 9, and the main control circuit 7. Next, a large number of touch keys on the operation display section 5 will be explained.

11... are numerical keys from 0 to 9, which are used to input numerical values when setting the heating output and heating time.

12 is an output key for setting the high frequency output, and the numerical value n input after that is the heating output n which can be switched from 0 to 9 steps.
This indicates that it is a tier.

Reference numeral 13 is a time key for setting the heating time, and is used to indicate that the numerical value input thereafter is the heating time.

Reference numeral 14 denotes a temperature key, and the numerical value input thereafter indicates the temperature that the heated object should reach.

Reference numeral 15 is a memory key used when implementing a heating method that includes multiple heating cycles, for example, when thawing in the first cycle, followed by cooking in the second cycle, and then keeping warm in the third cycle. When making settings, by touching this memory key after setting each cycle, the preceding cycles are sequentially stored in the small capacity storage circuit 8.

Numeral 16 is a start key for starting heating, and by touching this key, heating is started under conditions such as heating output and heating time that have been set up to that point.

Numeral 17 is a stop key for temporarily stopping heating, and when the start key 16 is touched again after touching this key, heating is continued.

Reference numeral 18 is a clear key for erasing set values, and heating is stopped by touching this key.

Reference numeral 19 denotes a program number key used to store in the storage device 9 a heating method consisting of a plurality of heating cycles formed in the main control circuit, or retrieve the memory thereof.After touching this key, the number key 11 is By touching ..., you can specify the program number for each heating method.

20 is a program store key for storing the heating method in conjunction with the program number key, and the program store key 20 is touched after touching the program number key 19 and the numerical key 11 for specifying the program number. Accordingly, the heating method is stored in the storage device by specifying a program number.

Reference numeral 21 denotes a display unit that displays any one of the elapsed time after heating to a set value, the temperature of the object to be heated, etc., when desired.

Note that when measuring and displaying the temperature of the heated object, a probe with a built-in thermistor is inserted into the heated object and the change in resistance of the thermistor is converted into a digital quantity. In the microwave oven having the above configuration, the operating procedure will be described, for example, when thawing a frozen food and subsequently heating and cooking the food.

First, by touching the clear key 18, the previous setting values are erased and a new setting becomes possible. After that, in the first cycle, the time key 13, for example the numeric key 11.
By sequentially touching 2 and 0 of . . . , the output key 12, the numeric key 11 . Next, by touching the memory key 15, the setting conditions for this first cycle are stored in the small capacity storage circuit 8. Furthermore, in the second cycle, by sequentially touching the temperature key 1, for example, 8 and 0 of number key 11..., output key 12, and 9 of number key 11..., the temperature reached by the food reaches 80℃. A cycle is set in which the output is in the ninth stage. Next, by touching the memory key 15, the setting conditions for this second cycle are stored in the small capacity storage circuit 8. Finally, by touching the start key 16, the heating method consisting of the first and second cycles is implemented. The heating method is stored as is in the small capacity storage circuit 8 in the main control circuit 7.

Here, when executing another cooking next time, the memory circuit 8
When storing a heating method corresponding to the other cooking mentioned above, the clear key 18 must be operated to erase the previous heating method. Of course, when such a heating method is used frequently, it is convenient to memorize and retain the heating method as it is, as it saves the effort of setting the same heating method again. The mass storage device 9 is provided for this purpose. Within the capacity of this storage device, multiple heating methods can be stored, and each of the multiple heating methods is assigned a program number, and is called up and executed by this program number. It is becoming more and more like this. Specifically, when storing a heating method in the mass storage device 9 and calling up this heating method at a desired time to perform heating, the following procedure is followed. First, touch program number key 19, then number key 11...
For example, touch 1 and 5 and then program store key 20
By touching , the heating method is stored in the mass storage device 9 as program number 15. If you want to use the heating method with program number 15 at a later date, press the program number key 19 and the numeric keys as follows. By sequentially touching 1 and 5 of 11 and the start key 16, the corresponding heating method corresponding to the program number 15 is called up, and then by touching the start key 16, heating cooking according to this program is performed. As is clear from the above description, according to the present invention,
A first storage section that stores only one heating method consisting of a plurality of heating cycles, and a second storage section that stores each of the plurality of heating methods in association with a program number, and when a program number is not specified, the first storage section Recalls a heating method in the storage unit and executes heating cooking according to the method, and when a program number is specified, calls up a heating method corresponding to the specified number in the second storage unit and executes heating cooking according to the method. Therefore, if you designate a program number for a heating method that is frequently used and want to keep it in memory even after use, the desired method will be stored in the memory. By simply specifying a program number and operating, for example, a start key, that method can be called up and the desired cooking can be carried out, making the operation simple.

In addition, for heating methods that can be deleted after use, the heating method is set each time cooking is performed on the heating method.In this case, the heating method can be set in the first storage section. Then, simply by operating the start key, the heating method in the first storage section can be recalled and the desired cooking can be carried out, so in such a case there is no need to specify a separate program number as described above. This makes the operation easier.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a block diagram schematically showing a circuit provided in the embodiment, and FIG. 3 is an enlarged view of the operation display section of the embodiment. 9... Mass storage device, 19... Program number key, 20... Program store key.

Claims (1)

[Claims] 1. A first storage unit that stores only one heating method consisting of a plurality of heating cycles, and a second storage unit that stores each of the plurality of heating methods by specifying a program number,
When a program number is not specified, a heating method in the first storage section is called up and cooking is performed according to the method;
A microwave oven characterized in that when a program number is specified, a heating method corresponding to the specified number in the second storage section is called up and cooking is performed according to the method.