JP2001065873A - Heating method of cooking heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To start heating smoothly without requiring preheating through a heater transformer by containing a food to be heated in the heating chamber, driving a heating source by closing the door, setting a desired heating time and then pushing a heating start key. SOLUTION: When a food to be heated is contained in the heating chamber by opening the door and then the door is closed again, a timer is initially reset and a heat source, i.e., a magnetron, is driven 2 second later to start oscillation. Subsequently, a user inputs a heating time of the food and pushes a start key. The time elapsed after start of heating is T1. The time difference between T0 and T1 is then operated and if it is within 5 sec, the operation proceeds to step S7 and oscillation is sustained. The time (T1-T0) required for setting a heating time after start of heating is subtracted from an inputted heating time and then added with the time required for starting heating after closing the door thus determining the remaining time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking device such as a microwave oven, and to a method for controlling a heating time.

[0002]

2. Description of the Related Art In a conventional commercial microwave oven, a magnetron filament is heated by a heater transformer immediately before heating and cooking, and the magnetron is oscillated immediately (within 0.5 seconds) when a start key of the microwave oven is input. There is something like that.

In the case of such an example, there are problems such as an increase in manufacturing price and an increase in total weight due to mounting of a heater transformer, and an increase in a time required for heating. In addition, there has been a problem that the heating time of the filament is prolonged, and the filament life of the magnetron is shortened.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and provides a heating method capable of starting heating smoothly without performing preliminary heating by a heater transformer. The purpose is to do.

[0005]

According to a first aspect of the present invention, a step of opening a door that can be opened and closed, containing a food to be heated in a heating chamber, and closing the door again to drive a heating source. And setting a desired heating time after the heating source drive and pressing a heating start key, and timing the time from when the heating source is driven by closing the door to when the heating start key is pressed, A step of continuing the heating as a remaining heating time by subtracting a time from when the heating source is driven by closing the door and pressing the heating start key from the desired heating time to a remaining heating time, This is a heating method.

Further, according to the invention of claim 2 of the present invention, the food to be heated is accommodated in the heating chamber by opening the openable door, and after closing the door again, the operation of setting the heating time within a predetermined time or This is a heating method for a heating cooking device including a step of forcibly stopping driving of a heating source when there is no operation of pressing a heating start key.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a heating method according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a flowchart showing the flow of the processing of the heating method. In the figure, the door is opened in step S1, and the food to be heated is stored in the heating chamber in step S2.

Next, when the door is closed again in step S3,
The timer is initially reset (t = T0), and after two seconds in step S3, the magnetron as a heating source is driven and its oscillation is started.

After the start of the oscillation, the user inputs a heating time of the food to be heated and presses a start key (start key) (step S5). The elapsed time from the start of heating at this time is t
= T1.

Then, the process proceeds to step S6 to calculate the difference between the times T0 and T1, and if the result is within 5 seconds, the process proceeds to step S7 to continue the oscillation. On the other hand, if it is longer than 5 seconds in step S6, the oscillation is stopped to prevent long-time idling or the like (step S8).

When the oscillation is continued, a heating end time is calculated in step S9. That is, from the input heating time,
Time spent for setting heating time from the start of heating (T1-T
0) is subtracted, and the time (2 seconds) spent from closing the door to starting the heating is added to obtain the remaining heating time (step S9).

Further, the remaining heating time is counted down, and when it reaches 0, the oscillation is stopped and the heating is terminated (step S10).

According to the above-described heating method, the magnetron is energized when the food is put into the heating chamber by opening the door and the door is closed, and the magnetron starts oscillating about two seconds later.

Then, a heating time of 30 seconds is input,
The time (tentatively 5 seconds) until the start key is pressed is measured, and [30 seconds] − [(time 5 seconds from when the door is closed until the start key is pressed) − (oscillation time 2 seconds)] = 27 seconds Continue oscillation.

In this example, 5 + 27 = 32 seconds from the closing of the door to the completion of cooking.

[0017]

As described above, according to the present invention, since the heating is started before the heating time is set, when the heating source is a magnetron, a heater transformer becomes unnecessary, thereby reducing the manufacturing cost and the total weight. And the total cooking time can be reduced. When the heating source is a magnetron, the heating time of the filament is shortened, so that the life of the magnetron itself can be extended.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating a heating method of the present invention.

Claims (2)

[Claims] 1. A step of driving a heating source by opening a door that can be opened and closed to accommodate a food to be heated in a heating chamber and closing the door again, and setting a desired heating time after the driving of the heating source. Pressing a heating start key; timing the time from when the heating source is driven by closing the door and pressing the heating start key; and closing the door and driving the heating source from the desired heating time And continuing the heating as a remaining heating time by subtracting the time from when the heating start key is pressed until the heating start key is pressed. 2. When the food to be heated is accommodated in the heating chamber by opening the openable door and the door is closed again, there is no operation for setting the heating time or pressing the heating start key within a predetermined time. The method according to claim 1, further comprising the step of forcibly stopping the driving of the heating source.