JPH03159094A - Microwave oven - Google Patents

Abstract

PURPOSE:To prevent excessive or insufficient food heating by setting a cooking time with the predetermined rated output on the basis of heating output and cooking time information displayed as cooking procedures for a microwave oven. CONSTITUTION:Input means 5 and 6 respectively for heating output and cooking tine information displayed as cooking procedures for a microwave oven are provided, and time control means 24a to 24c for setting a cooking time with rated output on the basis of entered heating output and cooking time information are provided. In addition, an operation control means 24d for performing a heating operation during the set cooking time is provided. Furthermore, as a total calorific value required for heating is calculated on the basis of the heating output and cooking tine information displayed for the food, the cooking time is automatically so set as to give the required total calorific value for heating the food, even when the rated output is fixed. According to the aforesaid construction, the excessive or insufficient heating of the food can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a microwave oven configured to heat food at a predetermined rated output.

(Prior Art) In recent years, many types of microwave-specific foods have been sold, and the number of users using these foods has also increased. In the above-mentioned microwave oven food, heating output information and cooking time information are written and displayed as cooking instructions for the microwave oven, for example, on a packaging bag or the like so as to serve as a cooking guide. In this case, the heating output information includes, for example, the output value of the microwave oven (600 W, 500 W, 400 W, etc.), and the cooking time information includes, for example, the time value (10 minutes, 5 minutes, 2 minutes, etc.).

On the other hand, the rated output of a microwave oven is generally fixed to a predetermined value, and the heating output cannot be adjusted. In this configuration, the user manually sets the cooking time as appropriate, and the food is heated for that cooking time.

(Divisional Report to be Solved by the Invention) However, when using the above-mentioned conventional configuration to cook food exclusively for microwave ovens, the user can Since heating is performed by manually setting the cooking time according to the cooking time information displayed on the food, there is a drawback that the food may be overheated or the food may be underheated.

Therefore, an object of the present invention is to avoid overheating the food or underheating the food when cooking according to the heating output information and cooking time information displayed on the food in a device with a fixed rated output. The purpose is to provide a microwave oven that can prevent running out of microwave ovens.

[Structure of the Invention] (Means for Solving the Problems) The microwave oven of the present invention is configured to heat food at a predetermined rated output, and the microwave oven has heating output information and cooking information displayed as cooking instructions for the microwave oven. A manual means for manually inputting time information is provided, and a time control means is provided for setting a cooking time at the rated output based on the manually input heating output information and cooking time information, and at the set cooking time... 1. It is characterized by the provision of an operation control means for performing heating operation.

(Function) If the heating output information displayed on the food or cookbook is approximately the same as the rated output, the cooking time may be set to be the same as the cooking time information. Further, when the heating output information is larger than the rated output, by making the cooking time longer than the cooking time information, it is possible to make the cooking finish equivalent to that obtained by following the microwave cooking instructions to some extent. However, since the time control means sets the cooking time at the rated output based on the manually input heating output information and cooking time information, it is possible to appropriately set the cooking time even if the heating output information differs from the rated output. It is possible. Since the heating operation is performed at the rated output during the set cooking time, you can expect the same cooking results as when following the microwave cooking instructions, and there is no possibility of overheating the food or undercooking the food. You can prevent this from happening.

(Example) An example of the present invention will be described below with reference to the drawings.

First, in FIG. 2, a heating cooking chamber 2 is provided inside an outer box 1 of a microwave oven, and a door 3 is provided to open and close a front opening of this heating cooking chamber 2. Outer box 1
An operation panel 4 is provided at the right end of the front surface of the , and this operation panel 4 includes input means such as various operation switches 5, input means such as a timer knob 6, and a display section 7.
is installed. As shown in FIG. 3, the various operation switches 5 mentioned above are provided with a food switch 5a exclusively for microwave ovens. Incidentally, at the bottom of the heating cooking chamber 2, a rotating plate 8 on which food can be sampled is provided.

Further, in FIG. 4 showing the electrical configuration, a pair of power supply busbars 10 and 11 are led out from a plug 9 connected to a commercial AC power source. One power bus 10 has a fuse 1
2. One end of a primary coil 17a of a high voltage transformer 17 is connected via a thermoswitch 13, a first door switch 14, and a relay switch 15, 16 for output adjustment. The other end of the primary coil 17a of the high voltage transformer 17 is connected to the other power supply bus 11 via a second door switch 18. A seal switch 19 and an interior light 20 are connected in parallel between the two power supply buses 10 and 11. on the other hand,
A magnetron drive circuit 21 is connected to the secondary coil 17b of the high voltage transformer 17, and its DC output is applied to the magnetron 22. The high voltage transformer 17, magnetron drive circuit 21 and magnetron 2
A heating circuit 23 is constituted by the second and the like. Further, a control circuit 24 is connected to the power supply bus 10.11 via a DC power supply circuit (not shown). This control circuit 24 is configured to include, for example, a microcomputer, and a third
As shown in the figure, it has a switch input section 24a, a timer knob input section 24b1, a display/countdown control section 24C, and a heating circuit control section 24d. In this case, the switch input section 24a, the timer knob input section 24b, and the display/countdown control section 24c constitute time control means, and the heating circuit control section 24d constitutes operation control means. The control circuit 24 receives each switch signal from the operation switch 5 and a signal corresponding to the rotation angle from the timer knob 6, and drives the display section 7 and controls the heating circuit 23, in this case a relay. The switches 15 and 16 are controlled to be turned on and off as appropriate.

Next, the operation of the above configuration will be explained with reference also to FIGS. 1 and 5.

FIG. 1 shows a flowchart of the portion of the control program stored in the control circuit 24 for cooking microwave-specific food. When cooking food that can only be microwaved,
First, for example, heating output information and cooking time information displayed on a food or cookbook are input manually. Specifically, when the microwave-specific food switch 5a is operated, a display indicating the heating output is displayed on the display section 7. That is, FIG. 5(a).

As shown in (b), when the switch 5a is operated once, rP 600J is displayed on the display section 7. In this case, in the initial state before the switch 5a is operated, the display content of the display unit 7 is not an output value, so the switch 5a is operated once and after proceeding to [YESJ in step S1,゜S3. In S4, the process advances to rNOJ, executes step S5, and displays [P 600J on the display section 7. Below, the above switch 5
Each time a is operated, rP 500J, rP400J,
rP 300J is displayed one after another on the display section 7, and after that,
Each time the switch 5a is operated, the above-mentioned four displays are sequentially repeated (steps 81 to 510). In this case, rP 600J indicates that the heating power is 600W. After the heating output information displayed on the food matches the display on the display section 7, the timer knob 6 is rotated to input the cooking time (step S9). Specifically, when the timer knob 6 is rotated, the time is displayed on the display section 7 as shown in FIG. 5(c), and when this time matches the cooking time information displayed on the food, the timer knob is turned. 6
Stop operating. Display r on the display section 7 shown in FIG. 5(C)
lo:OOJ indicates 10 minutes (“10” on the left indicates minutes, and “00” on the right indicates seconds). In this state, as shown in FIG. 5(d), when the start switch 5b, which is one of the operation switches 5, is operated (step 511), the rated output and the input heating output information are compared. do. At this time, if the two are equal, the input cooking time information is set as the actual cooking time. If not equal, then
The cooking time is calculated and set so that the product of the rated output and the cooking time is equal to the product of the manually input heating output information and the cooking time information.

That is, the actual cooking time is set so that the food can be heated by the exact amount required to heat the food determined by the heating output information and the cooking time information. Specifically, when counting down the time displayed on the display unit 7, 1 second to count down (1 second on the display) is (b/a) of the real time.
seconds (step 512). Here, a is the rated output and b is the input heating output information. The heating output information and cooking time information displayed on the food are now 5°O.
W and 10 minutes, and if the predetermined rated output of the microwave oven is 600W, then 1m600W, b-
Since it is 500W, 1 second of countdown is 5/6
seconds (i.e. the actual cooking time is 50/6 minutes)
. Further, as another example, if it is a-500W and b-600W, one second of the countdown is 615 seconds.

--Heating is then started, and the displayed time countdown is started as described above (step S13, 514). While the display time is being counted down, the remaining time is displayed on the display section 7. Thereafter, when the displayed remaining time becomes zero, heating is stopped (step S15, 516).

According to this embodiment with such a configuration, when cooking is performed according to the heating output information and cooking time information displayed on the food, the total amount of heat required to heat the food can be calculated based on the image information. . Therefore, even if the rated output is fixed, the cooking time can be automatically set to achieve the required total heat amount. Since the food is heated for the set cooking time, the total amount of heat for heating is appropriate, and it is possible to prevent the food from being overheated or underheated. Moreover,
In this case, the operation is simple because the user only needs to input the heating output information and cooking time information displayed on the food as the cooking instructions for the microwave oven.

[Effects of the Invention] As is clear from the above description, the present invention provides a manual means for manually inputting heating output information and cooking time information displayed as cooking instructions for a microwave oven, and also provides a manual means for manually inputting heating output information and cooking time information displayed as cooking instructions for a microwave oven. Since the structure is configured to provide a time system for setting the cooking time with a predetermined rated output based on the cooking time information and cooking time information, the heating output information and cooking time information displayed on the food can be adjusted even if the rated output is fixed. When cooking according to this method, it is possible to prevent the food from being overheated or underheated.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a flow chart, FIG. 2 is an overall perspective view, FIG. 3 is a block diagram, FIG. FIG. 4 is a diagram showing the correspondence between the display example of the display unit and the display example of the display unit. In the drawings, reference numeral 5 indicates an operation switch (manual power means), 6 a timer knob (input means), 7 a display section, and 24 a control circuit (time control means, operation control means).

Claims (1)

[Claims] 1. An input means for inputting heating output information and cooking time information displayed as cooking instructions for a microwave oven in a device that heats food at a predetermined rated output;
The electronic device is characterized by being provided with a time control means for setting a cooking time at the rated output based on the input heating output information and cooking time information, and an operation control means for performing a heating operation for the set cooking time. range.