JPS60111823A - Electronic control type cooker - Google Patents

Abstract

PURPOSE:To simplify heat retaining operation by a method wherein a second cooking initiating means, which effects heat retaining operation after finishing heating operation, is provided in the cooker. CONSTITUTION:An operating panel is provided with a key board 5 while the key board 5 is provided with numeral keys of 0-9, first and second start keys for starting cooking, a time key as well as a temperature key for setting heating time and heating temperature as the conditions of cooking respectively, a stop key for stopping the cooking on the way thereof and a clear key for releasing set cooking conditions and the like. The heating operation is carried out (M1 step) based on the cooking conditions, preset by the operation of the first start key. On the other hand, the heat retaining operation, effected by a predetermined control, is carried out (M2 step) by the operation of the second start key after the heating operation, same as the operation upon operating said cooking starting means, is carried out (M1 step). Accordingly, a special procedure is not necessitated as the operation for a case in which the heat retaining is to be effected after finishing the heating operation.

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to an electronically controlled cooking device such as a microwave oven.

(B) Prior art Conventionally, the operating procedure for executing a keep-warm operation to keep food warm after the desired heating operation has ended is to set cooking conditions such as heating time and heating temperature, and then perform a keep-warm operation instruction operation.
After that, the cooking start operation is performed. Therefore, in this case, in addition to setting the cooking conditions, it is also necessary to perform a warming operation instruction operation, making the operability extremely complicated.

e→ Purpose of the Invention The object of the present invention is to greatly simplify the operation when performing a heat retention operation after the heating operation is completed.

B) Structure of the Invention The structure of the present invention for achieving the above object will be explained with reference to FIG. (M1 step) In the electronically controlled cooker, another cooking start means (B) is provided, and when the other cooking start means is operated, the same heating operation as when the above cooking start means (A) is operated. After execution (M1 step), a heat retention operation is performed under predetermined control (M2 step).

(f) Example A microwave oven according to an embodiment of the present invention will be described below.

Figure 2 shows the appearance of the microwave oven.
) contains a heating chamber (
3) is arranged, and the operation panel (4) on the front of the main body (1) is arranged.
) is provided with a keyboard (5). As shown in Fig. 3, the keyboard has number keys from 0 to 9, a first start key and another second start key for starting cooking, and for setting heating time and heating temperature as cooking conditions, respectively. It has a time key, a temperature key, a stop key for stopping cooking halfway, and a clear key for canceling the set cooking condition table.

FIG. 4 shows the circuit of the microwave oven, which is controlled by a microcomputer (6).

The computer receives key signals from the keyboard (5), door signals from the door switch (7) that is turned on when the door (2) is closed, and a temperature detection unit (8) for detecting food temperature. ) is input.

The temperature detection section (8) is a temperature sensor consisting of an infrared sensor that receives infrared rays from food and outputs a signal according to the food temperature, or a temperature probe that is inserted directly into the food and outputs a signal according to the food temperature. (9), and an A/D converter (10) that converts the temperature signal from the temperature sensor into a digital signal and inputs it to the microcomputer (6).
) and consists of. Microwave heating is controlled by the microcomputer (6) depending on whether or not the heating signal M is output. That is, when the heating signal M is output, a switching circuit (work 1) consisting of a triac or the like is turned on, and power from a commercial power source (12) is transferred to a high voltage circuit (13) consisting of a high voltage transformer and a half-wave voltage doubler rectifier circuit. As a result, a high voltage is applied to the magnetron (1 pull), microwave oscillation is performed, and microwave heating is performed. Also, when the output of the heating signal M is stopped, the switching circuit (11) is turned off.
As a result, no high voltage is applied to the magnetron Q41, so microwave heating is not performed.

Next, the operation of the microwave oven will be explained based on the flowchart of FIG. 5 showing the flow of the operating program of the microcomputer (6).

First, when microwave heating is performed for 10 minutes and no further warming is performed, the key operations on the keyboard (5) are as follows: perforated plate Lil 1 time 10 times The state is exited, a heating time of 10 minutes is set in the microcomputer (6), and the program reaches step A1, where the heat retention flag in the microcomputer (6) is reset. continue,
The program advances to step A3, heating signal M is output, microwave heating is started, and then a heating time of 10 minutes is counted, and the program remains at step A4 until 10 minutes have elapsed. Then, after 10 minutes have passed, the program moves from step A4 to step A5. In this step, the contents of the heat retention flag are checked, and in this case, the heat retention flag is in a reset state, so the program proceeds to step A6, the output of the heating signal M is stopped, and the microwave heating ends. Furthermore, after that, microcomputers (6)
enters a standby operating state and remains there until a key operation for the next cooking is performed.

Next, when performing microwave heating for 10 minutes and then performing heat retention, the key operations on the keyboard (5) are as follows. When the key is operated, the microcomputer (6) exits the standby state in the same manner as described above, and a heating time of 10 minutes is set in the computer (6).
The program then reaches step A2. In this step, a heat retention flag is set.

Then, the program advances to step A and A4 in the same way as above, microwave heating is performed, and after 10 minutes, the program reaches step A5, but in this case, the keep-warm flag is set, so the program continues after that. Proceed to step A7.

In this step, the temperature of the food at the current moment, that is, after 10 minutes of microwave heating, is measured via the temperature sensor (9) and set in the temperature register in the microcomputer (6). Next, the program is A8A9. AIO,A
12 steps or A8. The temperature of the food is maintained at the temperature at which the 10 minutes have elapsed until the door is opened, thereby keeping the food warm. Here, in step A8, the current food temperature is detected via the temperature sensor (9), and in step A9, the detected current food temperature is set to 1 in the temperature register.
It is checked whether the food temperature is higher or lower than the food temperature after 0 minutes have elapsed, and in step A10, the output of the heating signal M is stopped and microwave heating is stopped, and in step A11, the output of the heating signal M is started and the microwave heating is started. is carried out, A12
In this step, the open/closed state of the door (2) is checked via the door switch (7).

When the door (2) is opened to take out the food, the door switch (7) is turned off, and the program reaches step A13 from any of the above cycles, and the heating signal M is output. If it is stopped, the above-mentioned heat retention will be stopped. The microcomputer (6) then enters a standby operating state.

As mentioned above, when heating without heat retention, the first start key is operated, and when heating with heat retention, the second start key is operated, and it simply depends on whether or not heat retention is involved. It is only concerned with selecting the start key, and therefore, when keeping warm is involved, there is no need to perform a special keep-warm instruction operation before operating the start key, making the key operation extremely simple.

In the above embodiment, if the temperature sensor (9) is a temperature probe, it is necessary to insert a temperature glove into the food in advance during heating accompanied by heat retention.

Furthermore, in the above embodiments, microwave heating based on heating time settings has been described, but of course microwave heating based on heating temperature settings can also be performed. In this case, judgment as to whether or not the food temperature has reached the heating temperature is made in step A4, and if the temperature sensor (9) is a temperature probe, the temperature is determined in advance regardless of whether or not heat retention is involved. It is necessary to insert the probe into the food.

Further, in the above embodiment, the heat retention is performed until the door (2) is opened, but it may also be kept for a certain period of time.

Furthermore, in the embodiments described above, if the desired heating is followed by heat retention, this may be displayed from the time of the desired heating.

Furthermore, in the above-mentioned embodiments, it is also possible to change the heat retention during heating so that the heat retention can be performed afterwards or the heat retention can be canceled. In this case, the key operation may be, for example, operating a stop key to stop the current heating, and then reselecting the first start key or the second start key. Therefore, when such a key operation is performed, heating is continued from the time when the stop key was operated, and if keeping warm is designated according to the changed contents thereafter, keeping warm is executed.

(F) Effects of the Invention As is clear from the above explanation, according to the present invention, there is no special increase in the number of steps required to perform the warming operation after one heating is completed, and therefore key operations are extremely simple. A cooking device with excellent operability can be obtained.

[Brief explanation of drawings]

FIG. 1 is a flowchart for explaining the basic configuration of the cooking device of the present invention, FIG. 2 is an external perspective view of a microwave oven according to an embodiment of the present invention, and FIG. 6 is a front view of the keyboard of the microwave oven.
Figure 4 is a circuit diagram of the microwave oven's microwave oven, and Figure 5 is an explanation of the operation of the microcomputer in the microwave oven. It's a yard. (5)...Keyboard, (6)...Microcomputer. [Sanyo Electric Co., Ltd. Figure 1 Figure 2 Figure 1 Figure 3 Figure 4

Claims (1)

[Claims] (1) In an electronically controlled cooker that performs heating operation based on cooking conditions set by operating a cooking start means, another cooking start means is provided, and when the other cooking start means is operated, the above-mentioned cooking starts. An electronically controlled cooking appliance characterized in that after performing the same heating operation as when operating the means, a warming operation is executed under predetermined control.