JPS6044568B2 - microwave oven - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microwave oven equipped with a microprocessor.

Generally, microwave ovens equipped with microprocessors
A heating cycle is formed by setting a combination of heating output, heating time, heating temperature, etc., and a heating method is formed by combining a plurality of these heating cycles.

Microwave ovens that use 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 these points,
A feature of the present invention is that instructions regarding the next operation to be performed are given to the cook as appropriate via the display section.

Embodiments of the present invention will be described below based on the drawings.

In FIG. 1, 1 is a main body of the microwave oven, 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 a Nesa film on the back surface of a dielectric plate, and is provided with a large number of touch keys as an information input operation section, which can be operated by simply touching. As shown in FIG. 2, the microwave oven body 1 includes a key input means 6 for inputting operation commands from touch keys on an operation display section 5, and a card reader for reading magnetically recorded information on a cooking card to be described later. means 7, a display section 8 for displaying information in the microwave oven, an alarm means 9 that is activated and notifies the end of heating, etc., a heater drive section 10 that is equipped with a heater and that operates it, a magnetron. and a magnetron drive section 11 as a microwave generating means for operating the same, and a magnetron drive section 11 for controlling the respective drive sections 9, 10, 11 according to signals inputted using the input means 6, 7. A microprocessor 12 is provided.

Further, within the microprocessor 12, a read only memory (hereinafter abbreviated as ROM) 13, a nonvolatile memory 14, and an arithmetic unit 15 are formed. The microprocessor 12 performs arithmetic operations in the arithmetic unit 15, writes and reads information to and from the nonvolatile memory 14, and outputs to the display section 8, heater drive section 10, magnetron drive section 11, and alarm means 9. Control behavior. Next, the operation display section 5 will be explained with reference to FIG.

16... are numerical keys from 0 to 9, which are used to input numerical values when setting the heating output, temperature of the heated object, heating time, etc.

17 is a microwave key that is touched when operating the magnetron, and 18 is a heater key that is used when operating the heater.

Reference numeral 19 is an output key for setting the microwave output and heater output, and is used to indicate that the numerical value input thereafter is the output.

20 is a timer key, which instructs that the value input thereafter is the heating time.

Reference numeral 21 denotes a temperature key, which instructs that the value input thereafter is the heating temperature of the object to be heated.

22 is a start key for starting heating (by touching this key, heating is started under the conditions such as heating output, heating temperature, heating time, etc. that have been set up to that point).

Reference numeral 23 is a stop key for temporarily stopping heating, and when the start key 22 is touched again after touching this key, heating is continued.

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

25 is a read key whose function will be described later.

The display section 8 is for displaying elapsed heating time, temperature of the heated object, command information from the microprocessor 12, etc., when desired.

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. 26 is the card insertion force of the card reader means 7.

As shown in FIGS. 4 and 5, the dish card 27 is entirely made of synthetic resin, and has a dish name display section 28 and a photo 29 showing the finished state of the dish on the surface 27a.
A cooking pre-processing procedure display section 30 is also provided.

The cooking pre-processing procedure display section 30 is for explaining the cooking operations to be performed on the cooking material before heating it in the microwave oven. The cooking pre-processing procedure display section 30 includes not only the above-mentioned explanation but also an explanation of operations to be performed on the food by stopping the microwave heating halfway through the heating process. Further, on the back side 27b of the cooking card 27, a dish name display section 28'', a program card operation procedure display section 31, and a magnetic recording section 32 are provided.

The program card operation procedure display section 31 describes the operation procedure of the microwave oven and the method of inputting data such as weight. As shown in FIG.
4 stores each memory area (timer memory 14a1 temperature memory 14b1 magnetron power memory 14C1 heater power memory 1 river 4d1 cooking code column 14e timer factor column 14f1 baking condition column 14g) and each step of the heating cycle sequentially from the starting end side. It has a program area for the first to tenth step columns 14h and a storage area for an END column 141.

Note that the END column 141 stores an END signal.
Furthermore, since the memory is non-volatile, the program signals stored in these columns are not erased even when the power is turned off. Next, the operating procedure of the microwave oven of the present invention will be explained. [1] When using a cooking card, specifically, continuous microwave heating is performed in the first heating cycle, intermittent microwave heating is performed in the second cycle, and heater heating is performed in the third cycle. The manner of use will be explained.

First, a cooking card 27 is selected in which the heating method consisting of the above-mentioned first cycle to third cycle is magnetically recorded.
As shown in FIG. 7, this cooking card 27 has a cooking code 32a stored at its starting end. Specifically, time 1 was recorded for continuous microwave heating, time 2 was recorded for intermittent microwave heating, and time 3 was recorded for heater heating. Also, cooking card 27 is
When the card is inserted into the card insertion slot 26, the recorded contents are read into the non-volatile memory 4.

Specifically, the cooking code 32a is the cooking code column 14e.
, the first heating cycle 32b1 is placed in column 1 of heating cycle step 14h, the second heating cycle 32b2 is placed in column 2 of heating cycle step 14h, and the third heating cycle 32Y is placed in column 2 of heating cycle step 14h.
)3 is stored in column 3 of heating cycle step 14h. After that, the cooking card 27 is automatically inserted into the card insertion slot 2.
It is configured to come out from 6. After going through the above operating procedure, the user puts the pre-processed food into the microwave oven according to the cooking pre-processing procedure display section 30 of the cooking card and touches the start key 22.

At this time, the operation characteristic of the present invention is executed. That is,
In this case, the display section 8 displays a predetermined code (0004 in this embodiment) as instruction information to the cook from inside the microwave oven, and the alarm means 9 operates. Then, the microprocessor 12 enters a state of waiting for an operation based on the instruction information for which the program has been stopped. Here, the cook refers to the operation procedure display section 31 of the program card 27.

The operation procedure display section 31 specifically states that the display symbol (A)004) corresponds to an information input operation instruction to input the weight of the food, and how to input it. . Therefore, the cook follows this information input operation instruction, and if the weight is 200g, press the numeric key 1.
6 and (2) 101101 in sequence, and then touch the read key 25. Then, microprocessor 1
2 exits the standby state and performs calculations based on the input weight signal and the cooking code signal in the non-volatile memory 14.
As a result, a timer factor, which is a conversion index for converting timer time from food weight, unique to each program cooking, is formed, and this timer factor signal is stored in the timer factor field 14f in the non-volatile memory 4. Ru. Subsequently, the code 10110)1QU(6) of instruction information for the cook is displayed on the display section 8, and the microprocessor 12 similarly enters the standby state.

Display code 010101(6) corresponds to an information input operation instruction to input the degree of burntness, and this correspondence and the method of inputting the degree of burntness are described in the operation procedure display section 31. Furthermore, the program card operation procedure display section 31 of the cooking card 27 specifically shows Namayakita, Nakayaki (2),
It says fully baked (3).

Therefore, by inputting any one of these numerical values (1) to (3) according to his preference, the cook can store the grilling condition signal in the grilling condition column 14g of the non-volatile memory 4. Next, when the read key 25 is touched, the microprocessor 12 similarly exits the standby state, and the calculation unit 15 performs calculations based on this burnt condition signal.
The burntness signal is converted into magnetron power and heater power and stored in each memory of the nonvolatile memory 14.

Next, a code (6) of instruction information for the cook is displayed on the display section 8.
)■n(9) is displayed, and similarly microprocessor 1
2 enters a standby state.

The display code (6) ■NlOl corresponds to an information input operation instruction to start heating, and this correspondence relationship is written on the operation procedure display section 31. When the start key 22 is touched according to this operating procedure, the microprocessor 12 similarly exits the standby state, sequentially reads each heating cycle stored in the nonvolatile memory 14, and performs the heating method as follows. .

First, in the first stage of reading, the non-volatile memory 14
"Continuous microwave heating" information and "Time 1" information are read out from the "Time 1" information, of which "Time 1" information is combined with the timer factor information from the non-volatile memory 14 in the calculation unit 15, and the "Timer" information is read out. It is converted into time.

Further, the magnetron power memory 14c(7)'6 magnetron power 3' is read out. These "continuous microwave heating" signals, "magnetron power" signals and "timer time" signals are transmitted to the magnetron drive unit 11.
continuous microwave heating is carried out. In the second read stage, "intermittent microwave heating" information and "time 2" information are read out from the nonvolatile memory 14, and among these, "time 2" information is read out from the nonvolatile memory 14. The calculated timer factor and the calculated timer factor are combined in the arithmetic unit 15 and converted into "timer time".Furthermore, the "magnetron power" in the magnetron power memory 14c is read out.Then, these "intermittent microwave heating" signals "magnetron power" are read out. The ``signal'' and the ``timer time'' signal are sent to the magnetron drive unit 11 to perform intermittent microwave heating. In the third reading stage, "heater heating" information and "time 3" information are read from the non-volatile memo I river 4, and then "゜time 3" information is read out in the same manner as in the first and second stages. The information is converted into timer time.

Further, the "heater power" in the heater power memory 14d is read out.Then, these 64hi, 7, 99, and 64h, 7, 99, and 0.99 timer signals are sent to the heater drive unit 10. Thereafter, each heating cycle 14h is executed in the same manner until the final reading stage.

However, in this embodiment, since only the third stage is programmed, the subsequent steps 14h from 4 to [phase] are skipped. When "END" is reached, the operation signal of the alarm means 9 is transmitted to the microprocessor 1.
2, an alarm sounds and the above heating method is completed. [2] When the cooking card is not used.

First, by touching the clear key 24, the previous setting values are erased and a new setting becomes possible.

When performing microwave heating, press microwave key 1 in sequence.
7. When the output key 19 and number key 16 are touched, microwave heating with a predetermined output is set, and this signal is sent to the microprocessor 12 via the key input means 6 and stored in the magnetron power memory 14c of the nonvolatile memory 14. Then, when the timer key 20 and number key 16 are sequentially touched, the timer time is stored in the timer memory 14a, and finally when the start key 22 is touched, the information set above is transmitted to the magnetron drive unit 11 as a control signal. .

Thereby, microwave heating with a predetermined output is performed for a predetermined time. When heating the heater, touch the heater key 18, output key 19, and number key 16 in sequence to set the heater heating at a predetermined output, and this setting signal is sent to the heater power in the nonvolatile memory 14 via the key input means 6. It is stored in the memory 14d, and then when the timer key 20 and the number key 16 are sequentially touched, the timer memory 14a is stored.
The timer time is stored in the memory, and when the start key 22 is finally touched, the information set above is transmitted to the heater drive unit 10 as a control signal.

Thereby, heater heating with a predetermined output is performed for a predetermined time.

When performing microwave heating and heater heating at the same time, press microwave key 17, output key 19, and number key 1 in sequence.
6. Also heater key 18, output key 19, number key 1
When you touch 6, microwave heating and heater heating with a predetermined output are set, then when you touch the timer key 20 and number keys 16 in sequence, the timer time is stored in the timer memory 4a, and finally when you touch the start key 22. and,
The information set above is transmitted to the magnetron drive unit 11 and heater drive unit 10 as control signals.

Thereby, microwave heating with a predetermined output and heater heating with a predetermined output are performed simultaneously for a predetermined period of time. others,
In this example, microwave heating by setting the temperature of the object to be heated, heater heating by setting the temperature of the object to be heated, and simultaneous heating by microwave and heater by setting the temperature of the object to be heated are also carried out. It is configured so that it can be done.

In these cases, microwave key 17 or heater key 1
After touching 8, press temperature key 21 and number key 1 in sequence.
6, this setting signal is stored in the temperature memory 14b of the nonvolatile memory 14. In the above embodiment, only a single heating cycle can be performed when the card is not used. However, in this embodiment, a memory key is further added, and after setting the heating cycle, the memory key can be used. By touching it, the previous heating cycles are sequentially memorized, and for example, microwave heating is performed in the first heating cycle, and heater heating can be performed in the subsequent second heating cycle,
The heating method program formed in this manner can also be stored in a non-volatile memory in the same way as in the case of using the cooking card.

Furthermore, it is also possible to insert a cooking card that is not magnetically recorded into the card reader means so that the stored contents of the nonvolatile memory can be magnetically recorded on the card, thereby copying the magnetically recorded contents of the cooking card. It is also possible to save the program input from the key input means.

As is clear from the above description, according to the present invention, an information input operation section, a microwave generation means, and drive control of the microwave generation means based on information inputted by an input operation on the information input operation section. A microwave oven comprising a microprocessor that performs microwave heating, the microwave oven having a display section, the microprocessor displaying information regarding the next information input operation to be performed on the information input operation section based on the information input immediately before. Since operation instruction symbols are displayed on the display section, complex information input operations can be easily performed based on the operation instruction symbols, and the troublesome input operations are eliminated. It is possible to provide an extremely practical microwave oven for home use.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of the present invention, Fig. 2 is a control circuit block diagram of the embodiment, Fig. 3 is an enlarged view of the operation display section of the embodiment, and Fig. 4 shows the surface of a cooking card. 5 is a diagram showing the back side of the cooking card, FIG. 6 is an explanatory diagram of the nonvolatile memory, and FIG. 7 is a partially enlarged view of the cooking card. 12...Microprocessor.

Claims (1)

[Claims] 1. A microwave oven comprising an information input operation section, a microwave generation means, and a microprocessor that drives and controls the microwave generation means to perform microwave heating based on information input through input operations on the information input operation section. , further comprising a display section, wherein the microprocessor causes the display section to display an operation instruction symbol regarding the next information input operation to be performed on the information input operation section, based on the information input immediately before. Microwave oven.