JP2883367B2 - Electronic cooking equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electronic heating cooking device such as a microwave oven, and more specifically, a cooking program corresponding to each cooking menu is built in, and after one cooking menu is selected. More specifically, the present invention relates to an electronic heating cooking appliance capable of performing an immediate operation for immediately executing a cooking program and a delayed time operation for executing the cooking program after a predetermined standby time has elapsed after selecting a cooking menu.

<Prior Art> In recent years, many cooking devices using a microcomputer as heating control means have been marketed.
In this electronic heating cooking device, various types of cooking can be performed using a microcomputer. For example, a system has been developed in which a desired time is set as a cooking end time, and a delay time operation for automatically starting the operation at which the cooking should be completed at that time can be performed (Japanese Patent Publication No. Sho.
59-35159).

<Problems to be solved by the invention> However, when performing the delay time operation as described above,
In the case where the object to be cooked changes over time (for example, a water supply action) during a so-called standby period until the cooking start time after the object to be cooked is set, the object to be heated immediately before heating by the cooking appliance is used. The state depends on the length of the waiting period.

Therefore, there is a problem that a large difference occurs in the finish of the object to be cooked depending on the presence or absence of the standby time or the length of the standby time.

The present invention has been made in view of the above problems,
It is an object of the present invention to provide an electronic heating cooking apparatus in which, when performing cooking in which a change over time during a standby period has a significant effect on cooking, the finish does not change during the standby period.

<Means for Solving the Problems> An electronic heating cooking appliance of the present invention for achieving the above object includes a cooking program provided with a step for compensating for a shortage of a standby period when immediately after operation, When a cooking menu related to a cooking program provided with a process for compensating for the shortage of the standby period is selected, and when the delay time operation mode is set, the time from the setting time to the start of execution of the cooking program is set. Means for determining the time Ts,
A comparing means for comparing the preset time and the Ts, and a result of the comparison by the comparing means, when the time Ts is longer than the preset time, a step for compensating for the lack of the waiting period when the operation immediately after the above is performed. A cooking control means for executing the cooking program by omitting it.

<Operation> In the case of “immediate operation” in which the cooking program is immediately executed after selecting one cooking menu, the standby in the cooking menu in which the state of the object to be heated before the start of cooking depends on the length of the standby period. Special steps may be provided to compensate for the lack of time.

However, when the delay time operation is selected, when there is a sufficient standby time, the same result as when the “process for compensating for the shortage of the standby period” is obtained without performing the “process for compensating for the shortage of the standby period” is obtained. Is not considered to be a problem, and an effect such as saving time is produced.

Therefore, when the cooking menu in which the state of the object to be heated depends on the length of the waiting period is selected and the delay time operation mode is set at the same time, the execution of the cooking program is started from the time when the cooking menu is selected. When the time until the start was longer than the reference time, a part of the cooking program was omitted and executed.

<Example> Hereinafter, as an example of the present invention, rice cooked using a microwave heating device, that is, a microwave oven will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to a microwave oven, but may be applied to a gas microwave oven, an electric heater microwave oven, or the like.

FIG. 2 shows the appearance of the microwave oven. Microwave oven body 1
A door 2 is attached to a front surface of the microwave oven 1, and a control panel 3 is arranged on a side of a front surface of the microwave oven main body 1. After selecting at least one cooking menu, the control panel 3
A mode selection key for selecting the immediate operation mode or the delay time operation mode for immediately executing the cooking program, a time setting key for setting a cooking end time when the delay time operation mode is selected, "cooking rice", "reheating", etc. A cooking menu selection key for selecting the cooking menu is provided.

FIG. 3 is a schematic diagram showing an electric circuit of a microwave oven,
The output of the commercial power supply 11 is input to the primary side of the transformer 14 through the fuse 12 and the operation switch 13, and is supplied from the secondary side of the transformer 14 to the magnetron through the capacitor 15 and the diode 16. The operation switch 13 is turned on and off by a relay 17 driven by the control unit 4 including a microcomputer.
Is performed in accordance with the operation of. Various keys provided on the control panel 3 are connected to the control unit 4, and when the heating control is performed by operating these keys, the relay 7 operates to control the operation. .

Generally, when cooking rice using a microwave oven, sufficient results cannot be obtained even if the rice is heated with full power immediately after washing.
Usually, when cooking rice, the operation of immersing rice in water is performed for about 30 minutes, but in a microwave oven, as shown in FIG.
Before the rice cooking start time to, the output (pulse duty ratio) of the magnetron is lowered and heated, and the water temperature is gradually raised to perform the immersion process in a short time. However, when the delay time operation is performed, it takes 30 minutes from the time when the rice was washed and put into the microwave oven body 1 to the time when the operation started.
If there is a waiting time of more than a minute, the rice will naturally finish the immersion process during the waiting time. Therefore, in the above case, the immersion step by heating is not required.

Therefore, a flowchart (FIG. 1) of the heating control when performing the delay time operation according to the present invention will be described below.

First, the cooking end time Te is set by the time setting key (step), and the cooking menu is set to “cooked rice” by the cooking menu selection key (step). Then, the microcomputer calculates the cooking start time Ts by Te−t, Store (step). Here, t is the time required to execute the cooking program.

Next, a comparison is made as to whether or not the cooking start time Ts exceeds 30 minutes (step). If not, the process proceeds to step S, where time display and key scanning for determining which key is operated are performed. Then, a routine (step) for counting down the time is defined as a cooking start time.
Circulate until it reaches Ts (step to step).
When the cooking start time Ts is reached (step), as shown in FIG. 4A, a immersion step (step) is performed in which the output of the magnetron is reduced and heating is performed, and after the immersion step is completed, cooking is executed (step).

Therefore, if the cooking start time Ts is 30 minutes or less, cooking is performed after the immersion step. In other words, the cooking program including the immersion process is executed.

In step, if it is more than 30 minutes before the cooking start time Ts, the process proceeds to step, time display and key scan are performed, and the time is counted down (step). When the cooking start time Ts comes (step), cooking starts immediately without going through the immersion step. That is, the step of FIG. In other words, a cooking program that does not include the immersion step is executed.

Therefore, if the cooking start time Ts exceeds 30 minutes,
If the scheduled time comes without performing the immersion step, cooking will be executed.

As described above, if the predetermined time is exceeded until the cooking start time Ts, the immersion step is automatically omitted, so that the time for executing the cooking program is short, and time and power are saved. The finish of cooked rice is also good.

<Effects of the Invention> As described above, according to the electronic cooking device of the present invention,
When a cooking menu in which the state of the object to be heated depends on the length of the standby period is selected and the delay time operation mode is set at the same time, the execution of the cooking program is started from the time when the cooking menu is selected. If the time until is longer than the reference time, a part of the cooking program is omitted and executed, so that stable cooking can be performed regardless of whether the immediate operation mode or the delay time operation mode is set. You can get the finish of the thing.

In addition, by omitting a part of the cooking program, it is possible to shorten the time that the electronic heating appliance is occupied by one cooking, and to effectively utilize the electronic heating appliance. If the cooking amount is constant, the cooking time can be shortened, and this can also be used to save power.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a cooking control procedure when the delay time operation mode is set, FIG. 2 is a front view of a microwave oven as a kind of electronic heating cooking appliance, FIG. 3 is a heating circuit diagram of the microwave oven, FIG. 4 is a waveform diagram showing a magnetron drive signal. 1 ... microwave oven body 3 ... control panel 4 ... control unit

Claims (1)

(57) [Claims] A cooking program corresponding to each cooking menu is built in, an operation mode for immediately executing a cooking program after selecting one cooking menu, and a cooking program for a predetermined standby time after selecting a cooking menu. In the electronic heating cooking device capable of setting the delay time operation mode to be executed after the elapse, the cooking program includes a cooking program provided with a process for compensating for a shortage of a standby time when immediately after operation, When a cooking menu related to a cooking program in which a process for compensating for a shortage of time is provided is selected, and when the delay time operation mode is set, a time Ts from the set time to the start of execution of the cooking program. , A comparing means for comparing the preset time with the above Ts, and a time Ts obtained as a result of the comparison by the comparing means. An electronic heating cooking device comprising: cooking control means for executing the cooking program by omitting a step for compensating for the shortage of the standby time when is longer than a preset time.