JPS60175929A - Heating cooker - Google Patents

Abstract

PURPOSE:To enable to ensure stable finish at all times regardless of the amount of cooking materials, the mixing ratio of the materials and the like by a method wherein automatic heating is performed by utilizing a plurality of sensors. CONSTITUTION:A sensing means 19 to detect humidity and a sensing means 20 to detect the atmospheric temperature in a cooker are arranged in an exhaust guide 18. In addition, a sensing means 21 to detect the surface temperature of stuff to be cooked 13 is in the upper part of a heating chamber 12. All the sensors 19, 20 and 21 transmit the state of progress of heating through a detection circuit 22 to a control part 11. Concretely, the humidity sensor 19 gives the information of the sure progress of oven-cooking to the control part 11 by giving the information on the process of the stuff to be cooked 13, during which vapor is discharged by heating until the surface of the stuff to be cooked 13 becomes dry. On the other hand, the sensor 21 monitors the process, during which the surface of the stuff to be cooked 13 gets dry and turns to be browned, through the rise of surface temperature. Accordingly, the automatic oven-cooking is established by the help of the informations from the two sensors.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a heating cooker, and more particularly to a heating cooker that automatically performs heating using a plurality of sensors.

Conventional example ("i'7i construction and its problems") Conventional sensor-equipped microwave ovens intended for automatic cooking, for example, can be used to reheat menus for reheating cold rice, cold miso soup, etc., or for raw foods, such as vegetables. Automatic cooking using sensors has been put into practical use for menus that are heated using radio waves, such as pre-cooked menus or simmered menus.Furthermore, the above-mentioned ranges usually have Ilf function for automatic oven cooking. If you press the key on the shoe key, the pre-recorded (
The most common method is to call out the specified time and temperature for cooking, and even though it is an automatic cooker, it has not yet been automated using sensors.

Therefore, if the condition of the food to be cooked, such as the size of the quantity or the monthly mixing ratio of the dough, differs from the value specified in the cookbook, there is a problem that the finished state of the cooking will also change.

Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks, and aims to provide a cooking device that uses sensor-based automatic cooking for oven cooking and provides a constant finish regardless of the amount of ingredients or the mixing ratio. .

Structure of the Invention In order to achieve the above object, the cooking device of the present invention includes a heating means for heating the food to be cooked, a control section for controlling the heating means, a first sensor means for detecting the steam kite emitted from the food to be cooked, and a cooking device for cooking. comprising a second sensor means for detecting the surface temperature of the object;
The first sensor means is used to determine the temporal change in steam generation, especially the maximum value, and the second sensor means is used to control the heating stages.
1 is ff1lf In oven cooking, automatic cooking is performed using a sensor, and the size of the amount of food to be cooked is determined. / 1 systemAlways stable performance even if there are differences in blending ratio etc.
This has the effect of securing lilies.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of the main body according to this embodiment. Body 1 +
On the 7iJ surface, a door body 2 is pivotally supported, which is freely provided. A menu key 4 for selecting a cooking menu is provided on the operation panel 3.

FIG. 2 is a detailed view of the operation panel 3. As shown in FIG. To use the menu, select the desired menu using the menu key 4. For example, press the ``Kutsky'' button on the oven.

Then, 11 A21 Tr appears on the display window 5 in the 4-digit numeric display section, indicating that the key has been decoded by the control section and has been validly input.

Subsequently, when the start button 6 is pressed, preheating for automatic cooking is started. When the preheating reaches a predetermined temperature, for example 180°C, a buzzer will notify you.

When the user puts the ingredients in and presses the start button again, automatic cooking begins. On the operation panel 3, there are also a mode setting key 7 for manual cooking, a timer knob 8,
A temperature setting key 9 is arranged. Reference numeral 10 is a cancel key for canceling a preset menu or heating pattern and stopping cooking in progress.

Now, FIG. 3 is a block diagram showing the configuration of such a heating cooker. Various commands input from the operation panel 3 are decoded by the control section 11.

Based on this command, the control unit 11 performs a predetermined display,
Furthermore, the progress of heating is controlled.

An object to be heated 13 is placed in the heating chamber 12 and heated by a magnetron 14 and an electric heater 15 serving as heating means. The magnetron 14 is energized and controlled by the control unit 11 via the driver 16 . The blower 17 cools the magnetron 14 and also ventilates the inside of the heating chamber 12.

18 is an exhaust kite that sends the air out of the aircraft.

Inside the exhaust guide 18, a first sensor means 19 capable of detecting humidity and a third sensor means 20 capable of detecting the internal atmospheric temperature are provided. A second sensor means 21 is provided to transmit the progress of heating to the control unit 11 via a detection circuit 22. The control unit 11 controls the heating of the food to be cooked, which will be described later, based on the information from these sensors. Note that 23 is a turntable that rotates the food 13 to improve uneven heating, and 24 is a motor that is its driving source.

Now, in oven cooking, the way steam is generated from negative values is as shown in Figure 4. In particular, I gave an example of Kutsky. Steam increases until point A, and steam is generated from the entire food. It reaches its pole at point A. From point A to point B, less water vapor is generated from the surface, resulting in a dry state. After point B, the internal moisture also decreases, and at point 0, there is almost no moisture in the food. On the other hand, the change in the surface degree of the food is shown in Figure 5. Ta.

The surface temperature of the food placed in the preheated container 12 gradually rises due to the radiant heat of the heater 15 and the convection and conduction of hot air! t reaches point a. Since moisture is present in the food, the amount of heat added to the food and the amount of heat absorbed by the evaporating moisture remain in equilibrium for a while, and the surface temperature of the food does not rise above the 5th point. At point 5, there is no moisture on the surface, so the surface temperature rises rapidly.At points Jl, L, and C, the surface of the food begins to change color due to so-called impatience. In other words, it is possible to control the browning of the surface necessary for oven cooking.

Now, the humidity sensor gives information on the process by which the food releases steam when heated and the surface becomes dry, ensuring that oven cooking progresses.

Its role is to provide the control unit with information about the current status. On the other hand, an increase in surface temperature causes the surface of the food to dry,
The role of jiao is to monitor the process of eye appearance. Therefore, the information from these two sensors combine to achieve automatic cooking of oven food. Now, as described above, the present invention uses two sensors to control the cooking finish, but if the humidity sensor fails, the surface temperature sensor monitors the temperature, so if the temperature level is below 2, it will not be necessary to heat up. It is possible to increase safety by using control software that cancels δf. Similarly, it is also possible to further improve safety by using control software that stops heating when the humidity information indicates that the dry state is maintained for a predetermined period of time or longer. In this way, automatic control of oven cooking using sensors, which could not be achieved in the past, can be achieved.

As the first sensor means, even at temperatures of 100°C or higher,
Neohumiceram, an absolute humidity sensor capable of accurately measuring humidity, and a pyroelectric type or surface acoustic wave type infrared sensor as the second sensor means are optimal sensor means for achieving the present invention.

Effects of the Invention According to the present invention, the following effects can be obtained.

(1) Automatic oven cooking can be achieved, compared to conventional 11
During cooking, variations in finish due to published ingredients, additive mixing ratio, etc. are improved, and a stable finish can be achieved.

(2) Even if the humidity sensor fails, it is highly safe because the finish is controlled by the temperature sensor.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the main body of a heating cooker that is an embodiment of the present invention, Fig. 2 is a detailed view of the operation panel, Fig. 3 is a configuration diagram showing the embodiment, and Fig. 4 is the temperature sensor. FIG. 5 is a diagram showing information on the surface 1'l'i+'1 degree of the same temperature sensor. 11...Control unit, 12...Heating chamber, 13...
...Cooked food, 14-...Magnetron, 19...
...first sensor means, 21...second sensor means. Name of agent: Patent attorney Satoshi Nakao and 1 other person No. 1
Figure 3 Figure 4 Figure 5

Claims (3)

[Claims] (1) Consisting of a heating means for heating the food to be cooked, a control section for controlling the heating means, a first sensor means for detecting the amount of steam emitted from the food to be cooked, and a second sensor means for detecting the surface temperature of the food to be cooked. , the first sensor means is used to determine whether the steam generation changes over time, and whether it reaches a maximum value or (■), and the second sensor means is used to determine whether the surface temperature of the food to be cooked suddenly stops 1r1 from a substantially constant state. 11. A heating cooker having a configuration 11-1 that controls the heating means by determining the point at which the heating device turns. (2) The heating cooker according to claim 1, which includes a gas sensor or a sensor as the first sensor means. (3) The cooking device as set forth in claim 1, characterized in that it is equipped with an infrared sensor as the second sensor means.