JPS6361750B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a thawing cooking method using a high-frequency heating device, and particularly to one configured to automatically perform thawing and cooking sequentially.

Configuration of conventional examples and their problems Thawing of frozen foods by microwave heating is completed in an extremely short time, resulting in good quality after thawing, and has been put into practical use more widely than ever before. Here, we will refer to the so-called thawing cooking method, which involves heating frozen cooked foods and frozen vegetables such as Mitsu Vegetables all at once after thawing them.
Conventionally, such defrosting cooking methods generally involve heating at a constant power from defrosting to cooking. Then, using gas sensors, infrared sensors, etc., it detects when the food is heated and automatically finishes cooking. This conventional thawing cooking method requires less heating time, but on the other hand, cold spots tend to appear in the center of the food, and uniformity is lost in areas that start to melt early and areas that start to melt slowly, resulting in temperature fluctuations. Even if there is no difference in the quality, the problem is that the finish is sluggish. This is especially noticeable when there is a large amount of food. Therefore, when thawing and cooking large quantities of curry or stew,
If you don't immediately move the food to the refrigerator or indoors to thaw it before cooking, you won't be able to defrost it properly.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to provide a heating pattern that can reduce the temperature difference of food during thawing and cooking, improve homogeneity, and enable prompt cooking.

Structure of the Invention In order to achieve the above object, the high frequency heating device of the present invention is provided with a weight setting means for inputting the weight of the frozen food and a finishing sensor for detecting the completion of heating of the object to be heated. is set, the food is first thawed for a time corresponding to its weight, and then automatically cooked using the finished sensor.
Defrosting and cooking can be done quickly and uniformly, reducing temperature differences.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a perspective view of a high-frequency heating device according to the present invention. A door body 2 is pivotally supported on the front surface of the main body 1 so as to be freely openable and closable, and an operation panel 3 is arranged. An auto key is provided on the operation panel 3, and a thawing/cooking key 4 according to the present invention is provided therein. The timer knob 5 is used to set the heating time, but when the thawing cooking key 4 is pressed, it functions as a weight setting means.

FIG. 2 is a block diagram showing one embodiment of the configuration of the present invention. Commands input from the thawing/cooking key 4 on the operation panel 3 and the weight setting means 5 are decoded by the control section 6. Then, the control unit 6 starts defrosting and cooking the frozen food, which is the object to be heated 8 placed in the heating chamber 7 . The heating is controlled by supplying power to a magnetron, which is a high frequency generating means 10, through a driver 9.

Heating is different depending on when the weight is set and when it starts suddenly without setting the weight.
one pattern is selected. In other words, after the thawing cooking cake 4 is pressed, the timer knob 5, which is a weight setting means, is turned and the weight is input.In other cases, the start key is pressed immediately after the thawing cooking key 4 is pressed. be. The choice is left to the user; when thawing large chunks of meat that tend to vary in temperature, or curry and stew that tend to end up mushy, set the weight and carefully thaw before cooking. However, for foods such as frozen Yuumai and Mitsu Vegetables, which are produced in small quantities and have little temperature difference and are less likely to lose homogeneity, it is easier to defrost and cook them all at once using the conventional method. Therefore, depending on the food, the user can choose whether to prefer convenience or quality of finish by performing or omitting the weight setting operation.

Now, reference numeral 11 denotes a finishing sensor, and in this embodiment, a gas sensor that reacts to steam or gas generated from the object to be heated is used. The gas sensor 11 is disposed within the exhaust guide 12 and detects steam or gas exhausted by the ventilation fan 13. In addition, mounting plate 1
4 is rotationally driven by a motor 15 to improve uneven heating. 16 is a detection circuit of the gas sensor.

As the gas sensor 11, a relative humidity sensor "Hyumi Ceram" manufactured by Matsushita, an absolute humidity sensor "Neo Huyumi Ceram", a gas sensor manufactured by Figaro, etc. can be used.

Further, as a finishing sensor, an electric type infrared sensor or a SAW sensor applying surface acoustic waves can be used.

FIG. 3 shows a heating pattern for thawing cooking in an embodiment using a gas sensor as a finishing sensor, and represents a case where weight setting is performed. Diagram a shows the state of microwave output, and diagram b shows the amount of steam generated from food. Heating consists of a defrosting mode "DEF" and a cooking mode "COOK", and the defrosting mode is further divided into three small modes. First T ₁
is heated by microwave at full power and T ₁ =
The process ends when _K1W ( _K1 : constant, W: set weight) has elapsed. In this mode, the temperature of the frozen food is raised all at once, and before the surface reaches a boil, it shifts to the next _T2 mode, or rest mode. T ₂ time is K ₂ W
(K ₂ : constant), and carryover heating is performed during this time to eliminate temperature unevenness.

The following T ₃ mode is a mode in which the power is reduced to prevent the surface from boiling while thawing the center of the food, and the time is calculated by T ₃ = K ₃ W (K ₃ : constant).

Now, when the defrosting is completed through these steps, the cooking mode is shifted to "COOK". Here, we count the time t ₄ until the amount of steam generated from the food reaches a predetermined value △h, and based on this we calculate t ₄ = t ₄ + k ₄ t ₄
(k ₄ : constant) is calculated. k ₄ may be zero.

Next, a heating pattern without weight setting will be explained using FIG. 4. At this time, heating is 1
mode only, and the “DEF-COOK” mode defrosts and cooks all at once. and a predetermined amount of steam △
The time t until h is detected is counted, and based on this, the heating time is determined by T=t+Kt (K: constant).

As described above, the thawing cooking of the present invention uses the weight setting means and the finished product sensor to automatically cook the frozen food in an optimal pattern depending on convenience or finished product.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) By setting the weight of large amounts of curry, stew, chunks of meat, etc. that are prone to localized boiling or cold spots in the center, the temperature difference is small and it is possible to defrost and cook highly uniformly without becoming sloppy.

(2) Small amounts of shiiyu mai or frozen vegetables, which tend to become overcooked due to oil ooze and water content release,
You can easily thaw and cook at the appropriate finishing temperature without setting the weight.

(3) With one thawing cooking key, the user can select whether or not to set the weight of various frozen foods, allowing for efficient automatic thawing cooking.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main body of a high-frequency heating device showing an embodiment of the present invention, FIG. 2 is a block diagram showing an embodiment of the same configuration, FIG. 3 is a diagram showing an embodiment of the heating pattern, and FIG. FIG. 4 is a diagram showing an example of a heating pattern without weight setting. 4... Thawing cooking key, 5... Weight setting means, 6
...Control unit, 7...Heating chamber, 8...Object to be heated, 1
0... High frequency generating means, 11... Finishing sensor (gas sensor).

Claims (1)

[Claims] 1. A heating chamber in which the object to be heated is placed, a high frequency generation means coupled to this heating chamber, a control section for controlling power supply to the high frequency generation means, and a weight of the object to be heated is input to this control section. weight setting means; a finish sensor that detects completion of heating of the object to be heated;
and a key for instructing thawing cooking, and when the weight of the object to be heated is input by the weight setting means together with the input of the key, the control section defrosts at low output for a time corresponding to the set weight. . A high-frequency heating device configured to perform cooking at high output after that, and to control completion of heating using the finished sensor.