JPH02130322A - Heating cooker - Google Patents

Abstract

PURPOSE:To extend a heating time after recooking according to a heating intermittent time to prevent heating shortage while regulating an extended heating time at specified value or less to prevent cooking failure by overheat by providing the above heating cooker with each means of heating, control, input, intermission instructions, counting, recooking instructions, calculating, regulation and indicating. CONSTITUTION:A microcomputer 1 calculates counted Ti, namely, a heating time after heating reopening according to a heating intermission time. In other words, K.Ti (K: positive constant) is added to a heating residual time T at the time of heating intermission and the calculation of a heating time t after recooking in the form for modifying the heating residual time T is performed. At this time, calculated t is compared with the heating Tm of heating start and t is regulated at Tm in the case where t is equal to or more than Tm. Further, during the intermission, t is indicated in a display 5. Thereby, cooking failure by heating shortage or overheat and the dispersion of a cooking finish condition by the length of the intermission can be controlled. Further, since the heating time after recooking is indicated during intermission, handling is very easy.

Description

[Detailed description of the invention] (appropriate industrial applications) The present invention relates to a cooking device such as a microwave oven.

(0) Conventional technology When cooking using a microwave oven or the like, there are cases where cooking operations such as stirring or seasoning the food are performed during the heating process. When performing such a cooking operation, it has been proposed to temporarily interrupt the heating operation and display a message indicating that heating is being interrupted. However, in such cases, the cook may not notice the display indicating that heating is being interrupted, or may take time to add seasoning or other cooking operations, resulting in a longer heating interruption time. It is possible that the temperature of the food may drop. In this case, even if heating is restarted after the cooking operation is completed and heating is performed for the prescribed heating time, there is a risk that the cooking will fail due to insufficient heating.

The present invention prevents cooking failure due to overheating by regulating the heating interruption time to a predetermined value or less, and also displays the extended heating time to be performed after restarting during heating interruption. To obtain a heating cooker that is easy to use.

(d) Means for Solving the Problems The heating cooker of the present invention includes a heating means for heating food, a control means for controlling the heating means, an input means for inputting heating time information into the control means, and a heating device for heating food. Interruption instruction means for instructing interruption of heating during operation; timekeeping means for timing such heating interruption time; restart instruction means for instructing restart of interrupted heating;
A calculation means for calculating the heating time after restarting heating according to the heating interruption time, a regulating means for regulating the heating time after restarting to a predetermined value or less, and a heating interruption for the heating time after restarting calculated by the calculation means. It is characterized by comprising a display means for displaying information inside.

(E) Effect When heating is interrupted, the heating time after restart is calculated according to the interruption time, and the calculated heating time after restart is displayed even during heating interruption. The heating time after restarting is regulated to be below a predetermined value.

(v) Embodiment Figure 1 shows a microwave oven according to an embodiment of the present invention, (1) is the main body of the microwave oven, (2) is a heating chamber formed in the main body, and (3) is the heating chamber. Door that opens and closes the front opening (4
) is an operation panel provided on the front of the main body (1).

As shown in Figure 2, the operation panel (4) consists of a display (5) that displays operating status such as heating time, heating, interruption, etc., menu keys (6), number keys (7), and operation keys (8). It has a keyboard (9) as an input means for inputting heating time information and the like.

FIG. 3 shows a circuit block diagram of this microwave oven. (1
0) is provided in the main body (1) and serves as a heating means for supplying high frequency waves to the heating chamber (2) to heat the food in the heating chamber (2), and (11) is a high voltage circuit or relay. A drive circuit that drives the magnetron (10) by a signal from a microcomputer, which will be described later.
12) is a microcomputer (hereinafter referred to as microcomputer) as a control means for controlling the display (5) and magnetron (10) by referring to the information input from the keyboard (9), (131 corresponds to various menus) (14) is a memory storing cooking data to be prepared;
2) A sensor installed nearby to detect the heating state of the food.

FIG. 4 is a flowchart of a control program built into the microcomputer (12), and the operation of the present microwave oven will be explained according to this diagram.

In the initial state, the flags BSY and IN of the microcomputer (12)
T is reset to 0, and the program normally runs from 81 to
It is cycling through S5 steps. In step S1, the display (5) is controlled. In step S1, when heating is not performed, the current time is displayed on the display (5) based on time information from a clock (not shown) built in the microcomputer (12). Further, while heating is in progress, the remaining time of heating is displayed. Further, during the heating interruption, in step S2, keys of the keyboard (9) are scanned, and in step S3, it is determined whether or not there is any human power on the keys. When there is no key power, the process proceeds to step S4, where the flag BSY is checked to determine whether or not heating is in progress. When the flag BSY is O, that is, when heating is not in progress, the process proceeds to step S5, where the flag INT is checked to determine whether or not heating is being interrupted. When the flag INT is 0, that is, when heating is not being interrupted, the process returns to step S1.

To start cooking, when the total heating time (heating time information) is input from the keyboard (9), the input is detected in step S3, and a judgment is made as to whether or not it is the start key (
S6 step), and determining whether it is a stop key (S6 step).
Step 7), it is determined whether or not it is a time input (step S8), and then the process advances to step S9. In step S9,
The total heating time that has not been input is stored in the internal memory T as the remaining heating time.
Store in. In the subsequent step S10, -( is the total heating time at the beginning of heating.)
and store it in Tm.

The program then returns to the loop of steps S1-S5. At this time, the inputted total heating time is displayed in step S1, but when an instruction to start heating is given by inputting the start key, the process goes through steps S3 and S6, and then advances to step Sll. In the Sll step, check the flag INT,
Determine whether heating is being interrupted. Since the flag F ONT is 0 at the start of heating, the process advances to step S12. In step S1^2, flag BSY is set to 1 to indicate that heating is being performed, and the process advances to step S13.

Thereafter, the program cycles through a heating loop of steps S13-S15 and S1-S4. In step S13, the magnetron (lO) is driven to perform heating, and then in step S14
After the memory T indicating the remaining heating time is subtracted in step S15, if 9T, which is used to judge whether the memory T is 0 or not, is not 0 or not, is not 0, in step S15,
Returning to step S1, the remaining heating time is displayed, and heating continues through this heating loop. When the scheduled heating is completed and T becomes 0 in step S15, the flag BSY is reset to O in step S16, and the heating is ended.

If, during heating, it is desired to temporarily interrupt the heating to stir the food, etc., the user may press the stop key (8a), which is an interrupt instruction means. At this time, execution of the program exits the heating loop through step S3, and proceeds to steps S17 and S18 through steps S6 and S7.

In step S17, the drive of the magnetron (10) is stopped to interrupt heating, and in step S18, the flag BSY is set.
The flag INT is set to 0 and INT is set to 1 to indicate that heating is being interrupted, and 0 is stored in the internal memory Ti.Next, the program proceeds to step S5, but since the flag INT is 1, it proceeds to step S19. Then, the elapsed time from when the stop key (8a) was pressed and heating was interrupted is counted and stored (added) in the internal memory Ti. That is, this 819 step corresponds to a timekeeping means.

The following step S20 is a calculation means that calculates the heating time after restarting heating according to the timed Ti, that is, the heating interruption time. In this example, K Ti (K: positive constant) is added to the remaining heating time T when heating is interrupted, and the remaining heating time T
The heating time t after restart is calculated by correcting the above. With such a configuration, the heating time after restarting heating can be corrected depending on the length of the heating interruption time. That is, the heating interruption time T
The longer i is, the longer the heating time after interruption, so even if the temperature of the food or inside the heating chamber (2) drops during a long heating interruption, cooking will fail due to insufficient heating. There isn't.

Next, S21. S22 step l is S20
This is a regulating means that regulates the heating time after restart calculated in step to a predetermined value or less. Here, the calculated t is compared with the heating time Tm at the beginning of heating (step S21).
, when t is greater than or equal to Tm, t is regulated to Tm (step S22). Without this regulating means, the heating time t after restart calculated in step S20 when the interruption time Ti is very long. This means that the heating time t after restarting may exceed the initial total heating time Tm, and there is a risk that cooking may fail due to overheating in the zero-burn configuration. Since the subsequent heating time t is regulated to be less than or equal to the predetermined value Tm, t will not become indefinitely long, and there is little risk of cooking failure or overheating of the cooker.

After that, the program will run from S1 to S until new key personnel are available.
5. Cycle through the interruption loop of steps S19 to S21 (S22). During this interruption, the heating time t after restart calculated in step S20 is displayed on the display (5) by executing step S1. The displayed value of t gradually increases from the value immediately after heating is interrupted (remaining heating time T at the time of interruption) as the interruption time passes, and if heating is restarted now, heating will end in how many minutes. The user can immediately know what is going on, and it is very easy to use.

When you have finished stirring the food and want to resume heating, close the door (3).
), then press the start key (8b). That is, this start key (8b) not only instructs the start of heating, but also serves as a restart instructing means for instructing restart of heating after interruption of heating. Start key (8b) during heating interruption
When is pressed, the program execution passes through the S3 step, exits the recording interruption loop, and proceeds to S6, the Sll step, but since the flag INT is 1 in the Sll step, the program proceeds to the S2B step. In step S23, the value of t calculated at the time of execution of the previous step S20 is stored in the internal memory T where the remaining heating time is to be stored as the new remaining heating time, and at the same time, the flag INT is reset to 0, and the step S1
Proceed to step 2. In step S12, the flag BSY
is set to 1, and the process proceeds to step S13, whereupon the process returns to the heating loop. Thereafter, this heating loop is closed and the heating after the interruption is continued until the new remaining heating time becomes 0. If you want to interrupt heating several times during one heating session, repeat the above operation.

Note that even when automatic cooking is performed using cooking data corresponding to various menus stored in the memory (13), heating can be temporarily interrupted for stirring or seasoning. In this case, the input of the menu number corresponding to the desired menu or the input of the menu key (6) corresponds to the heating time information, and the heating interruption instruction signal in the stored cooking data corresponds to the interruption instruction means. . In such a case, when the menu number 1 and the menu key (6) are pressed manually, the process advances from step S8 to step S24, and in the step S24, data such as the total heating time stored in the memory (13) is read out. Operations such as storing in memories T and Tm are performed.

Furthermore, various embodiments of the present invention are conceivable; for example, a launch switch (
(not shown), the heating can be automatically interrupted when the door (3) being heated is opened, and the heating can be automatically restarted when the door (3) is closed. In this case, the latch switch serves both as an interruption instruction means and a restart instruction means. Furthermore, the content of the calculation means is not limited to the content of the illustrated S20 step, and various applications can be considered. For example, the constant K may be changed depending on the amount of food or the menu, or the heating interruption time Ti may be changed.
It is also possible to divide the time into door opening time and door closing time, and when the door opening time is long, the heating time after restarting is made longer.

(g) Effects of the Invention According to the present invention, even if the heating operation is interrupted during heating to stir the food, etc., and even if the interruption time becomes longer for some reason, the heating operation can be resumed according to the interruption time. Since the heating time is calculated and the heating time after restarting is regulated to be below a predetermined value, it is possible to suppress cooking failures due to insufficient heating or overheating, and variations in the finished state of cooking due to the length of interruption time. Moreover, since the calculated heating time after restarting is displayed during interruption, it is very easy to use.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an external perspective view.
Fig. 2 is a front view showing the ci operating system, Fig. 3 is a circuit block diagram, and Fig. 4 is a flow diagram showing the control. (8a)...Stop key, (8b)...Start key, (9)...Keyboard, (lO)...Magnetron, (12)...Microcomputer. 2■ Figure 3 Figure 4

Claims (1)

[Claims] (1) Heating means for heating food, control means for controlling the heating means, input means for inputting heating time information into the control means, interruption instruction means for instructing interruption of heating during heating operation, interruption of heating A clocking means for counting time, a restart instructing means for instructing to restart the interrupted heating, a calculating means for calculating the heating time after restarting the heating according to the heating interruption time, and regulating the heating time after restarting to a predetermined value or less. A cooking device characterized by comprising a regulating means and a display means for displaying the heating time after restart calculated by the calculating means during heating interruption.