JP2807595B2 - Cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating means for heating an object to be heated in a heating chamber, a rotatable tray for mounting the object to be heated, and a driving device for rotating the tray. The present invention relates to a heating cooker comprising:

[0002]

2. Description of the Related Art Conventionally, in a heating cooker such as an electric oven, a gas oven, and a microwave oven with an electric heating device, when the object to be heated housed in a heating chamber is heated and browned, the object to be heated is placed on a saucer. In some cases, heating is performed while the pan is fixed and the pan is fixed, and in other cases, the pan is rotatable and heating is performed.

In particular, in the case of performing high-frequency heating, in many cases, the pan is rotatable in order to uniformly perform high-frequency heating, and in many cases, the pan is rotatable even when heating with an electric heating device. In many cases, for example, an electric heating device for browning bread or the like is often provided at a position slightly off the center of the plane of the heating chamber, so when two breads are placed on a saucer and heating is performed. In the case where the pan is fixed, the portion near the electric heating device is browned quickly, and the portion farther away is hardly browned, so that cooking cannot be performed uniformly.

[0004] In the case of cooking by rotating the pan, the two breads alternately pass in the vicinity of the electric heating device, so that the cooking is uniformly browned and good cooking can be performed.

[0005]

However, the conventional heating cooker cannot simultaneously heat a plurality of objects to be heated each having a different heating time required for an optimum cooking finish.

[0006] However, in the case where the cooking is performed by rotating the saucer as described above, when a plurality of objects to be heated with different heating times are simultaneously heated, for example, the eggs and the bread sliced in the container are removed. When cooking by heating with the heat of an electric heating device (electric heater), if the cooking is performed while rotating the saucer, the eggs and the bread pass alternately near the electric heating device, and the heat is uniformly transmitted to both. Therefore, the bread is heated faster and burns faster, and the bread finishes cooking before the egg, but the egg remains unheated. Cooking at the same time was not possible.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to discriminate objects to be heated having different heating times and to position the object to be heated having a long cooking time in the vicinity of the heating means, thereby reducing the heating time. It is an object of the present invention to allow different objects to be heated and cooked simultaneously.

[0008]

In order to achieve the above object, a heating cooker according to the present invention is provided with heating means for heating an object to be heated in a heating chamber, and rotatably mounts the object to be heated. The apparatus is provided with a tray provided, a driving device for rotating the tray is provided, and a menu selection means for simultaneously heating and cooking a plurality of objects to be heated having different heating times is provided.
And a plurality of objects to be heated are determined based on the detection result of the position detecting means, and the driving device is controlled to move the object to be heated having a long cooking time in the vicinity of the heating means. Is provided.

Further, a light source for irradiating the object to be irradiated with visible light is provided, a visible light emitted from the light source and reflected by the object to be received is received, and a detection signal corresponding to the illuminance of the reflected light is output. And a controller that determines the cooking state of the object to be heated based on a detection signal from the light receiving unit and controls the energization of the heating unit.

[0010]

The above-mentioned heating cooker determines a plurality of objects to be heated based on the detection result of the position detecting means, and controls the driving device to position the object to be heated with a long cooking time near the heating means. Then, a large amount of heat is transmitted to the object to be heated having a long cooking time to perform heating cooking, and the object to be heated having a long cooking time and the object to be heated having a short cooking time are cooked simultaneously.

Further, the visible light emitted from the light source and reflected by the object to be heated is received by the light receiving means, the cooking state of the object to be heated is determined based on the detection result of the light receiving means, and the power supply to the heating means is controlled. To finish the object to be heated in a good cooking state.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. FIG. 1 is an internal perspective view of a microwave oven with a toaster function, which is a cooking device according to the present invention, with an outer shell removed.
2 is a sectional view of FIG. 1 as viewed from the front, and FIG. 3 is a sectional view of FIG. 1 as viewed from the side.

[0013] Microwave of the invention, to arrange the electric heaters 3 is a heating means for heating the object to be heated in its entirety towards the rear from the center of the ceiling 2 of the heating chamber 1 of a box body formed of a metal A light source 4 for irradiating the object to be heated with visible light is provided in front of the electric heater 3, and an electric heater 6 is provided behind the center of the bottom plate 5 of the heating chamber 1. A rotatable tray 8 having a roller 7 for placing an object to be heated is provided, and a drive motor 9 for rotating the tray 8 is provided. The receiving tray 8 is used to transfer the object to be heated to the electric heaters 3 and 6.
It is formed in a mesh shape so that both sides of the object to be heated are scorched when cooked by heating.

On the side wall of the heating chamber 1, there is provided a magnetron 10 for irradiating the object to be heated on the tray 8 with microwaves at the time of microwave heating. A light receiving element 11 for receiving the visible light and detecting the illuminance of the visible light is provided.

FIG. 5 is a diagram showing the configuration of the above-described microwave oven control device. The control unit 12 controls the electric heaters 3 and 6 and the drive motor 9, and the control unit 12 has a plurality of heated objects having different heating times. and an operation section 15 having a wake-up key 13 and a cooking start key 14 for heating cooking menu selection key for example bread and egg simultaneously for performing heating tone management of things, the operating unit 15 and the light receiving element 11 and the control unit 12 are connected via an interface 16, and the electric heaters 3, 6 and the drive motor 9 are connected, and the electric heaters 3, 6, 6 are driven by signals from the operation unit 15 and the light receiving element 11.
The controller 12 controls the drive motor 9 to perform heating cooking.

In FIGS. 2 and 3, when microwave heating is performed by the magnetron 10, the tray 8 is constantly rotated by the drive motor 9 so that the object to be heated is uniformly heated by the microwave. Heating is being performed.

On the other hand, when cooking with the electric heaters 3 and 6, for example, when simultaneously cooking one slice of bread 17 and the eggs 19 divided in the container 18,
When the container 18 containing the bread 17 and the eggs 19 is placed as shown in FIG. 4 and heating and cooking are started at the same time, the bread 17 is heated and cooked earlier than the eggs 19. And 6 are heated by the amount of heat more than the bread 17, and when the eggs 19 are cooked to some extent, the pan 8 is rotated to finish the cooking at the same time.

The eggs 19 placed in the container 18 as described above
In order to position the egg 19 near the electric heaters 3 and 6, it is necessary to detect the position of the egg 19 by rotating the tray 8 at least once from the start of heating.

In order to detect the position of the egg 19 and position the egg 19 in the vicinity of the electric heaters 3 and 6, the light receiving element 11 is disposed in the vicinity of the electric heater 3 and the light receiving element 11 Then, the position of the egg 19 is detected by detecting the illuminance of the visible light reflected by the egg 19. That is, bread 17
Is compared with the illuminance of visible light reflected by the bread 17 when passing through the back side of the heating chamber 1 (in the vicinity of the electric heaters 3 and 6). The illuminance of the visible light reflected by the eggs 19 becomes darker. This is because when the egg 19 is not cooked, the white portion of the egg 19 is in a transparent state, so that less visible light is reflected on the surface of the egg 19, and the illuminance of the reflected visible light is reduced. By detecting, the bread 17 and the egg 19 can be discriminated.

FIG. 6 shows a circuit in which cadmium sulfide CdS, which is a photoconductive element whose resistance value decreases as the illuminance received increases, is used as the light receiving element 11 described above.
This circuit is composed of a resistor R1 and the other end of CdS11 having one end grounded.
Are connected in series, and a voltage Vc is applied to the other end of the resistor R1. The other end of the CdS 11 is connected to an input port An of the control unit 12 (the interface 13 is omitted) via a filter 18 including a resistor R2 and a capacitor C2. Therefore, if the resistance value Rc of CdS11 decreases, the input voltage to the control unit 12 also decreases accordingly.

FIG. 7 is a voltage characteristic diagram showing a change in the input voltage to the controller 12 when the bread 17 and the egg 19 are placed on the tray 8 and the tray 8 is rotated. During the rotation, the input voltage changes to indicate a voltage value A and a voltage value B. A drive motor 9 for rotating the tray 8
By using a synchronous motor, the number of rotations can be determined in synchronization with the power supply frequency, and the time required to make the pan 8 rotate once can be constant.

That is, the above voltage value A indicates the time when the bread 17 has passed near the electric heaters 3 and 6, and the voltage value B higher than this voltage value A indicates that the egg 19 has moved near the electric heaters 3 and 6. since shows the time that has passed, it is possible to stop the egg 19 by stopping the drive motor 9 after a predetermined time from when showing the voltage value B in the vicinity of the electric heater 3 and 6.

As described above, when the bread 17 and the egg 19 are cooked simultaneously, the saucer 8 is first rotated once and the input voltage (detection signal) from the light receiving element (CdS) 11 to the control unit 12 is used. The position of the egg 19 is detected, and the drive motor 9 is stopped after a predetermined time from when the input voltage indicates the voltage value B, whereby the egg 19 is automatically turned into the electric heater 3.
Then, the egg 19 is stopped at a position in the vicinity of 6 and the egg 19 is given a larger amount of heat than the bread 17 to cook.

Then, as the cooking proceeds and the white portion of the egg 19 solidifies, the illuminance of the visible light reflected from the surface of the egg 19 gradually increases, and the input voltage to the input port of the controller 12 gradually increases. It is getting lower. When the input voltage reaches a predetermined value, the tray 8 is rotated again so that the bread 17 and the egg 19 alternately pass near the electric heaters 3 and 6, so that the bread 17 and the egg 19 are simultaneously in good condition. Cook to the finished state.

In the above embodiment, the light source 4 is connected to the ceiling 2 of the heating chamber 1.
However, as shown in FIG. 8, the light source 4 may be provided on the bottom plate 5 as shown in FIG. As shown in FIG. 9, the visible light is blocked by the bread 17 and the container 18 at the portion where the bread 18 and the egg 19 are placed, as shown in FIG. Since the visible light is blocked by the mesh-shaped tray 8 in the portion where the bread 17 and the container 18 are not located, the ON and OFF are repeated. Therefore, when the bread 17 and the container 18 are placed on the tray 8, FIG. It becomes a signal like
When the bread 17 passes over the light source 4, it is turned off for the time Ta, and when the container 18 passes over the light source 4, it is turned off for the time Tb. Since the length is smaller, the time Tb is shorter than the time Ta. Based on this time, the bread 17 or the container 18 can be determined. Based on the determination result, the rotation of the pan 8 is controlled to perform the heating cooking.

[0026]

[0027]

According to the heating cooker of the present invention having the above-described configuration, a plurality of objects to be heated having different cooking times can be simultaneously cooked, and the objects to be heated having different cooking times can be optimally placed. Can be finished.

Further, the finished state of the object to be heated can be detected by using the light receiving means for detecting the position of the object to be heated, so that good heating can be performed with a simple and small number of parts.

[Brief description of the drawings]

FIG. 1 is an internal perspective view showing an embodiment of a heating cooker according to the present invention.

FIG. 2 is a cross-sectional view of the heating cooker of the present invention as viewed from the front.

FIG. 3 is a cross-sectional view of the heating cooker of the present invention as viewed from a side.

FIG. 4 is a plan view showing a tray 8 of the cooking device of the present invention.

FIG. 5 is a circuit diagram showing a control device for a heating cooker according to the present invention.

FIG. 6 is a main part circuit diagram showing a light receiving element 11 of the cooking device of the present invention.

FIG. 7 is a voltage characteristic diagram showing an input voltage to the control unit 12 of the cooking device of the present invention.

FIG. 8 is a sectional view seen from the front of a cooking device according to another embodiment of the present invention.

FIG. 9 shows a light receiving element 1 of a cooking device according to another embodiment of the present invention.
FIG. 4 is a characteristic diagram illustrating a detection signal of No. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating room 3 Electric heater 4 Light source 6 Electric heater 8 Receiving tray 9 Drive motor 11 Light receiving element 12 Control part 17 Bread 19 Egg

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24C 7/02 335 F24C 7/02 551 F24C 15/16

Claims (2)

(57) [Claims] 1. A heating cooker comprising: heating means for heating an object to be heated in a heating chamber; a rotatable tray on which the object to be heated is mounted; and a driving device for driving the tray to rotate. , and menu selection means for cooking a different object to be heated of the heating time at the same time, a position detecting means for detecting a position of the object to be heated, a plurality of heated based on the detection result of said position detecting means A cooking unit for determining an object and controlling the driving device to position an object to be heated having a long cooking time near the heating means. 2. The cooking device according to claim 1, wherein the position detecting means includes a light source for irradiating the object to be heated with visible light, and a visible light emitted from the light source and reflected by the object to be heated. And a light receiving means for outputting a detection signal corresponding to the illuminance of the reflected light. The above control for judging the cooking state of the object to be heated based on the detection signal from the light receiving means and controlling the energization to the heating means A cooking device characterized by having a part.