JPH0124483Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to cooking devices such as microwave ovens and microwave ovens, and more specifically, the output and heating time of the heating device are determined according to the amount of food to be cooked after basic cooking. The present invention relates to a cooking device that can automatically set and perform post-heat cooking.

Some cooking devices such as microwave ovens and microwave ovens are configured to perform initial heating, which is basic cooking, and then perform post-heating cooking for ripening. Conventionally, the output and heating time of the heating device for post-cooking have been determined based on the constant heating device output and the amount of food actually cooked, which are considered appropriate for the standard amount of food to be cooked for each cooking menu. This was done by adjusting the approximate heating time based on the time required for the associated initial heating.

By the way, when using the method for setting the output and heating time of the heating device as described above, the relationship between the surface and internal temperatures of the food changes depending on the amount of food actually cooked, and the output of the heating device also changes. The larger the difference between the standard cooking amount for each menu and the amount of food actually cooked, the more difficult it will be to adjust the heating time alone, especially when the amount of food is larger than the standard amount. If the amount is less than the standard amount, the surface of the food will be overheated, and in either case, the cooking finish is not desirable.

The present invention was developed to solve the above-mentioned difficulties, and it detects the time taken for the temperature of the food to be cooked to reach a set cooking finish temperature as an indicator of the amount of food to be cooked. The object of the present invention is to provide a cooking device that automatically sets the output and heating time of a heating device for post-heating based on this and performs post-heating.

As shown in FIG. 4, the cooking device according to the present invention has the following features:
Temperature setting means A such as an input key for the food to be cooked
In a cooker designed to heat the food to a preset cooking finish temperature with a heating device B such as a magnetron, and then post-cook it with the heating device B, the food to be cooked reaches the cooking finish temperature. means C for measuring the time required for the food to be heated; means D for calculating the ratio of this time to the time required for a standard amount of the same food to be heated to the finished cooking temperature; Means E for changing and setting the heating time and output of the heating device for post-heating, which have been set in advance for the same food, to a heating time and output corresponding to the product of these heating times and outputs and the ratio.
It is equipped with the following.

In addition, F in FIG. 4 is a temperature measuring means.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to drawings showing embodiments thereof.

FIG. 1 is a schematic vertical sectional view showing the internal mechanism of the cooking device according to the present invention (hereinafter referred to as the proposed product). A cavity (cooking room) 2 is provided with a turntable 5.

Furthermore, a waveguide 3 and a food temperature detection section 6 are provided on the top surface of the cavity 2 .

The waveguide 3 is for guiding microwaves generated by a magnetron 4, which is a heating device provided on the lower surface of one end protruding to the side of the cavity, into the cavity 2 from an opening on the lower surface of the other end. be.

The food temperature detecting section 6 detects thermal infrared rays emitted by the food F by an infrared sensor 61 whose detecting section faces a small hole 64 opened in the top surface of the cavity 2 almost directly above the center of rotation of the turntable 5. This is to detect the surface temperature of food F.

In addition, 63 in the figure is a tipper rotated by a motor 62, and intermittently applies infrared rays emitted from the food F to an infrared sensor 61 to detect the temperature difference between the food F and the tipper 63.
It is configured to measure the temperature of

Figure 2 is a block diagram of the control system of this product.
Arithmetic control device using a microcomputer 1
1. Consists of a detection circuit 60 for the infrared sensor 61, an oscillation control circuit 12 for the magnetron 4, a keyboard 13 for inputting cooking data, a display device 14, and a display memory 15 for storing the contents displayed on the display device 14. .

The arithmetic control device 11 stores data of a plurality of cooking menus in its memory, performs arithmetic operations as described below, and controls the output and on/off (adjustment of heating time) of the magnetron 4 via the oscillation control circuit 12. The data for this purpose is input from the keyboard 13, and the temperature detection circuit 60
The display device 14 displays the input contents from the keyboard 13 or the arithmetic and control device 1.
1 control details etc. are displayed.

The operation of the product constructed as described above will be explained with reference to the flowchart of FIG. 3 showing the contents of the calculation control performed by the calculation and control unit 11 during automatic cooking. First, when the keyboard 13 is operated and automatic cooking is selected and the cooking menu is selected, the arithmetic and control unit 11 starts the time counter ti, Time.
The flag FT and the Sec flag FS are each reset (step), and the number of the selected cooking menu is stored in the display memory 15 (step).
Note that the Time flag FT is set based on the temperature of the food F when it is in the reset state (FT=0).
In addition, in the set state (FT=1), the magnetron 4 is controlled by the post-heating time that is automatically set based on the elapsed time from the start of cooking until the temperature of the food to be cooked reaches the set temperature. is to be carried out. In addition, the Sec flag FS measures time (in seconds) when it is in the set state (FS = 1).
It is something that allows people to do this.

Further, the arithmetic and control device 11 sets the initial heating output P ₀ of the heating device, that is, the magnetron 4, and the finished cooking temperature Ts of the food F, respectively, according to the cooking menu selected from the cooking menu data stored in the memory in advance. Set (step). When the start of cooking is instructed via the input key 13 (step), the arithmetic and control unit 11 sends a control signal instructing the initial heating output _P0 to the oscillation control circuit 12.
As a result, magnetron 4 starts heating food F at output P ₀ (step).

When initial heating cooking starts in this way,
The states of the Time flag FT and Sec flag FS are checked (step, ).

Immediately after starting cooking, both flags FT and FS are reset, so proceed from step to step and reset the Sec flag FS (step).
The contents of the display memory 15 (at this point, the cooking menu number) are displayed on the memory 14, and the
The Sec flag FS is set, and processing such as key scanning is performed (step). As a result of the key scan, if it is determined that some key operation has been performed, the corresponding control is performed (step), and if no key operation has been performed, the process returns to step and heating continues ( step).

The food F is heated by repeating the process of proceeding from the above steps to , , , and returning to the steps.
Sec flag FS is set.

In this way, when the Sec flag FS is set every time one second passes, the arithmetic and control unit 11 increments the time counter ti by +1 and sets the surface temperature Tf of the food F by the infrared sensor 61.
Read from (step), cooking finish temperature Ts
Compare with (step). As a result of this comparison, if the food temperature Tf does not reach the finishing temperature Ts, the process proceeds to step, the Sec flag FS is reset, and the process proceeds from the same steps as described above and returns to step, which is repeated for the next 1 second. After 1 second has passed, the Sec flag is set again at the step.
FS is set and step to step,
Then, processing is performed to compare the food temperature Tf and the finished temperature Ts, and the above two types of processing are performed to compare the food temperature
Heating is repeated until Tf reaches the finished cooking temperature Ts.

Therefore, the count value of the above-mentioned time counter ti is the number of seconds, which means that the elapsed time from the start of heating is counted.

Now, when the food temperature Tf reaches the finished cooking temperature Ts, the process proceeds from step to step, basic cooking, that is, initial heating is completed, and post-heating is performed.

First, an index x for the amount of food F to be cooked in standard cooking is determined. This is the value of the time counter ti, that is, the predetermined cooking finish temperature of the food F, which is the actual cooking target.
By calculating the ratio of the time (seconds) required for the food to be heated to Ts and the number of seconds ts it takes to reach the finished cooking temperature Ts when cooking a standard amount of food, the actual cooked food can be determined. It is used as an index for the standard amount of food F in the food, and is calculated using the following formula (1).

x=ti/ts...(1) When the index x is determined, the arithmetic and control unit 11 determines the output _P1 and heating time _t1 of the magnetron 4 for post-heating.
is calculated using equations (2) and (3) below (step).

P ₁ = Kp・Ps・x …(2) t ₁ =Kt・ts・x …(3) In the above formulas (2) and (3), Kp and Kt are for post-heating for each menu, respectively. Ps and ts are coefficients of the output and heating time of the magnetron 4, respectively, and Ps and ts are the output and heating time of the magnetron 4 that are appropriate when a standard amount of food for each menu is cooked. These Kp, Kt, Ps, and ts are stored in advance in the memory within the arithmetic and control unit 11.

In this way the magnetron 4 for post-heating
When the output P ₁ and heating time t ₁ are determined, the post-heating output P ₁ is set, the arithmetic and control unit 11 stores the post-heating time t ₁ in the display memory 15, and also sets the Time flag.
Set FT (step).

Then, in the step described above, the Sec flag FS is set.
The content stored in the display memory 15 (at this point, it is post-heating time t ₁ ) is displayed on the display device 14, and each time 1 second elapses, the content stored in the display memory 15 is displayed.
After the Sec flag FS is set and a key scan and corresponding processing are performed in the step, the process returns to the step and the magnetron 4 is post-heated at the output _P1 .

In the case of post-heating, set the Time flag at the step.
Since FT has been set, the state of the Sec flag FS is checked from step to step, but as mentioned above, once the Sec flag FS is set in a step, it is reset in the step for the next 1 second. Therefore, if the Sec flag FS has been reset, the process proceeds from step to step, returns to step, and then repeats the process of proceeding from step to step. Then, when 1 second has elapsed, the Sec flag FS is set at the step, so proceeding from step to step, the content of the display memory 15, that is, the remaining time (seconds) for post-heating, is subtracted by 1 second, and this becomes 0. Proceed to step until (step 〓〓),
The Sec flag FS is reset and heating continues.

Therefore, in the case of post-heating, heating is continued by repeating the process of proceeding from step to step, ... and returning to step, and each time 1 second elapses, proceeding from step to step and subtracting the post-heating time. This is displayed on the display device 14 as the remaining heating time, and while these two types of processing are repeated, post-heating is performed for the post-heating time t ₁ determined by the above equation (3).

Then, the post-heating time determined in step
When _t1 has elapsed, the process advances to step 〓〓, the driving of the magnetron 4 is stopped, and the post-heating is completed.

Needless to say, this product requires manual,
That is, it is also possible for the user to cook the food by setting all the heating time, temperature, output of the heating device, etc. necessary for cooking the food.

As described in detail above, the cooking device according to the present invention is a cooking device that is configured to heat food to be cooked to a preset cooking temperature using a heating device and then post-cook the food using the heating device. , a means for measuring the time required for the food to be cooked to be heated to the finished cooking temperature, and the ratio of this time to the time required for a standard amount of the same food to be heated to the finished cooking temperature. This is because it is characterized by comprising means for calculating the ratio, and means for changing and setting the heating time for post-heating and the output of the heating device set for a standard amount of the food based on this ratio. , depending on the amount of food actually being prepared.
The output and heating time of the heating device for post-heating are appropriately set, and post-heating is performed under heating conditions that are substantially similar to those when cooking a standard amount of food. Therefore, inconveniences such as uneven cooking between the surface and inside of the food are eliminated, and special operations for post-heating are no longer necessary. As described above, according to the present invention, a good finish can be obtained regardless of the weight of the object to be cooked.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
The figure is a schematic vertical cross-sectional view of the cooking device according to the present invention.
The figure is a block diagram of the arithmetic and control system, and FIG. 3 is a flowchart showing the processing contents of the arithmetic and control unit. FIG. 4 is a functional block diagram of the cooking device of the present invention. 4... Magnetron, 6... Temperature detection section, 11
... Arithmetic control unit, 61 ... Infrared sensor.

Claims (1)

[Scope of Claim for Utility Model Registration] After the food to be cooked is heated to a preset finishing temperature using a heating device, the food to be cooked is cooked in a cooking device that is used for post-cooking in the heating device. means for timing the time required for the food to be heated to the doneness temperature; and means for calculating the ratio of this time to the time required for a standard amount of the same food to be heated to the doneness temperature; , means for changing and setting the preset heating time and output of the heating device for post-heating for the standard amount of the same food to a heating time and output corresponding to the product of these heating times and outputs and the ratio; A cooking device characterized by comprising: