JPH0155376B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention estimates the net weight of the food from the total weight of the food including the container, and automatically sets the heating time based on this estimated value and the type of food. The present invention relates to a heating time setting device for a container.

Conventionally, in cooking devices such as microwave ovens, a certain correlation has been recognized between the weight of food and the appropriate heating time for cooking, so the weight of the food is calibrated on the attached timer scale of the cooking device that sets the heating time. An ivy device was proposed. However, due to the characteristics of cooking, it is often used for reheating, and the food is already in the container when cooking is to be carried out, so in order to measure the net weight of the food, the food must be separated from the container. It was necessary to weigh the container or to subtract the weight of the container from the value measured together with the container. For this reason, it is troublesome to weigh the food, or if the above-mentioned operation is neglected due to this troublesomeness, the net weight of the food cannot be known, so there is an inconvenience that the correlation between weight and heating time is deviated from, and the correlation is not effectively utilized.

The present invention was made in view of the above points, and detects the total weight of the food including the container, and calculates the total weight of the food including the container.
The net weight of the food is calculated by multiplying it by a correction constant stored in accordance with the type of food, and the heating time is calculated by multiplying this net weight by a predetermined correction coefficient stored in advance according to the type of food. The purpose of this calculation is to solve the above-mentioned conventional disadvantages.

That is, as shown in FIG. 1, the present invention includes a total weight detection means for detecting the total weight of the cooked food including the container, a selection key group for selecting the type of the cooked food, and a selection key group for selecting the type of the cooked food. net weight calculating means for calculating the net weight of the food by multiplying the total weight by a predetermined correction coefficient stored in advance according to the type of the cooked food; and A heating time setting device for a cooking device is provided, comprising: heating time calculating means for calculating a heating time by multiplying the net weight by a predetermined correction coefficient stored in advance.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 5.

In the figure, 1 is a control unit with a built-in microcomputer installed in the microwave oven body, which has both oven and steam functions, and 2 is a selection key group for selecting the type of food to be cooked. For example, ``rice'', which is frequently reheated. , ``miso soup,'' ``simmered dishes,''``fries,''``tempura,'' and ``soup.'' Reference numeral 3 denotes a group of numeric keys through which the operator can arbitrarily input numerical values, and after operating the function selection key 4 for selecting oven, steam heating, etc., heating time and heating temperature are input. 5 is a start key for starting the cooking operation after inputting cooking data such as the heating time and heating temperature; 6 is a digital display unit that sequentially displays functions during the cooking operation, heating time, heating temperature, etc.; 7 is not shown; If a container is placed in advance using the zero point adjustment key of the weighing device and this key 7 is operated, the net weight of the food after subtracting the weight of the container is measured. 8 is a tare key, and after operating this key 8, by operating the numeric key group 3, the numerical value selected by the above operation can be subtracted from the value displayed on the digital display section 6. Reference numeral 9 denotes a weight designation key that allows a known food weight to be entered via the numeric key group 3, and is related to the selection key group 2 but is unrelated to the weighing device. Reference numeral 10 denotes a rotary plate that is interlocked with a measuring device installed in the cooking chamber.

Next, the action will be explained.

When the operator opens the door of the cooker, the display on the digital display section 6 automatically changes to the display of the weighing function, and if a load of more than a certain amount (for example, 50 g) is not placed on the rotary table 10, The display automatically becomes zero, and the functional transition of the weighing device is completed after these preparation steps. Then, when a container containing food is placed on the rotating plate 10, the weighing device measures the total weight of the food including the container.
W _GROSS is detected and the correlation between the gross weight W _GROSS obtained by statistically processing the field data of microwave oven owners and the net weight W _NET of only the food, for example, in the case of rice, the relationship between the container and the food. In other words, it is known that the relationship with the internal capacity falls within the range of ±15% from W _NET = 0.5W _GROSS 11 with approximately 90% probability, so this W _NET = 0.5W _GROSS and the total weight W _GROSS Estimate the net weight of the food W _NET from the detected value of W NET. On the other hand, since the heating temperature of rice is usually in the range of 60°C to 80°C, the correlation between the net weight and heating time at 60°C, 70°C, and 80°C is 12a, 12, and 12b in order. =0.225W _NET12a ,
12b corresponds to a value of ±16% for this relational expression, and is approximately equal to ±15% of the total weight W _GROSS and the net weight W _NET .

As a result, from the above T = 0.225W _NET and the relational expression W _NET = 0.5W _GROSS to estimate the net weight W _NET , the following formula T = 0.225 x 0.5 x W _GROSS =
0.1125W _GROSS 13 is obtained, and from this relational expression, the heating time T corresponding to the total weight W _GROSS can be automatically set using a microcomputer or the like. Therefore, if you select, for example, "Rice" from the selection key group 2, the heating time T will be automatically set via the above relational expression T = 0.1125W _GROSS , and then just by operating the cooking start key 5, the food will be cooked. Cooking begins with a heating time commensurate with the weight.

In addition, in the above example, the case of cooking rice was mentioned, but in the case of cooking miso soup, milk, simmered dishes, and other side dishes that are frequently cooked in daily life, the heating time T and the weight of the food including the container are the same as above. Of course, the correlation with

As explained above, according to the present invention, the net weight of only the food is estimated by multiplying the weight of the food including the container by a correction constant, and this estimated value is added to a predetermined value stored in advance according to the type of food. Since the heating time is calculated by multiplying by a correction factor, there is no need to separate the food from the container or subtract the weight of the container from the total weight when weighing the net weight of the food, making it easier to use. Not only is it extremely good, but
Overestimation of heating time can be prevented. For example, in the case of microwave ovens that use infrared detectors, humidity, gas sensors, etc., the overheating time can be used to prevent humidity and gas caused by overheating of the infrared detector during oven function and overhumidity during steam function. It also has the advantage of preventing sensor failure.

[Brief explanation of drawings]

Fig. 1 is a view corresponding to the claims of the present invention, Fig. 2 is a perspective view of a microwave oven that is an embodiment of the present invention, and Fig. 3 is a perspective view of a microwave oven that is an embodiment of the present invention.
The figure is an enlarged view of the control section of the same range as above, Figure 4 is a diagram showing the relationship between the gross weight W _GROSS and the net weight W _NET , and Figure 5 is a diagram showing the relationship between the gross weight W GROSS and the net weight W NET.
The figure shows the relationship between net weight W _NET and heating time.
FIG. 6 is a diagram showing the relationship between the total weight W _GROSS and the heating time T. DESCRIPTION OF SYMBOLS 1... Control unit, 2... Selection key group, 4... Function selection key, 5... Cooking start key, 6... Digital display section, 7... Zero point adjustment key, 10... Rotating plate.

Claims (1)

[Claims] 1. A total weight detection means for detecting the total weight of the cooked food including the container, a selection key group for selecting the type of cooked food, and a predetermined value stored in advance according to the type of cooked food selected by the selection key group. net weight calculating means for calculating the net weight of the food by multiplying the gross weight by a correction coefficient; A heating time setting device for a heating cooker, comprising: heating time calculation means for calculating the heating time by multiplying the net weight.