JP2983656B2 - Cooking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking device for cooking food by heating with a heater.

[0002]

2. Description of the Related Art In a cooker disclosed in Japanese Patent Application Laid-Open No. 2-25631 for heating and cooking food using a halogen heater, for example, when the halogen heater is turned on and off based on the temperature of a heating chamber, a halogen heater is used. When the heating room is on, the heating room is quite bright, but when it is off, the heating room becomes considerably darker than when it is on, the brightness in the heating room changes extremely, and there is a risk that the user may mistake it for a failure. is there.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a cooker in which the brightness in a heating chamber does not undesirably change when driving and controlling a halogen heater.

[0004]

[0005]

[0006]

[0007]

SUMMARY OF THE INVENTION A cooking device according to the present invention comprises a food
And a halogen chamber for heating the food
And another heater for heating the food, and based on time
The connection status of the heaters to the power supply in series or
And a control unit as a column.

[0008]

In the driving control of the halogen heater, the halogen heater is not driven to be turned on or off. When the drive is turned off, the drive is performed with low power consumption. Therefore, the brightness in the heating chamber does not change extremely.

[0009]

1 and 2 show the structure of a microwave oven according to an embodiment of the present invention. A heating chamber 1 for storing food is provided in a microwave oven main body 2. The food in the heating chamber 1 is heated by microwaves supplied from a magnetron 3, and a quartz tube heater 4 of 400 W and a halogen of 400 W are provided. The heater is heated by the heater 5 and the flat heater 6 of 500 W. The quartz tube heater 4 and the halogen heater 5 are arranged side by side on the outside of the upper wall 7 of the heating chamber in front and behind, respectively, and are covered with reflectors 8 and 9. Is radiated to the food through a small hole formed in the upper wall 7 of the heating chamber for heating the heater.
The flat heater 6 is in close contact with the outer surface of the heating chamber bottom wall 10, and the heat from the flat heater 6 is applied to the food via the heating chamber bottom wall 10 for heating the food. In addition, heating room 1
An interior light 11 for illuminating the inside is provided, and a temperature sensor 12 composed of a thermistor and detecting the temperature in the heating chamber is provided.

FIG. 3 shows a circuit of the microwave oven. A control unit 14, which is composed of a microcomputer or the like, is supplied with power through a power supply circuit 13 including a control transformer, and controls a microwave oven, is provided. The control unit 14 is provided on the front surface of the microwave oven. Based on key operation information from the keyboard 15 and the temperature detected by the temperature sensor 12, the first to sixth switches 16a to 16f are turned on and off by relay control. The first switch 16a corresponds to the microwave circuit 17 including the magnetron 3, and the first switch 16a
When the switch 16a is turned on, microwaves are oscillated from the magnetron 3, and microwave heating of the food is performed. The second, third, and fourth switches 16b, 16c, and 16d correspond to the quartz tube heater 4, the halogen heater 5, and the flat heater 6, respectively. The fifth switch 16e sets the connection relationship between the halogen heater 5 and the quartz tube heater 4. Switching is performed in parallel or in series, and the sixth switch 16 f corresponds to the interior light 11.

When a key operation is performed on the keyboard 15 to perform microwave heating, the control unit 14 first turns on the sixth switch 16f to start lighting the interior lamp 11. Subsequently, the control unit 14 turns on the first switch 16a to execute microwave heating. This microwave heating ends when the desired time has elapsed.

Next, when a key operation is performed on the keyboard 15 in order to heat the oven, the control unit 14 similarly turns on the sixth switch 16f to start lighting the interior lamp 11 similarly. Subsequently, the control unit 14 controls the second and third switches 16
b, 16c are turned on, the fifth switch 16e is switched to the solid line position, and the halogen heater 5 and the quartz tube heater 4 are connected in parallel to drive the halogen heater 5 and the quartz tube heater 4 in parallel, and the fourth switch 16d Is turned on, and the flat heater 6 is also driven. At this time, 1300 W oven heating is executed by parallel driving of the heaters. When the heating chamber temperature detected by the temperature sensor 12 reaches the desired temperature by performing the oven heating, the control unit 14
Turns off the fourth switch 16d to stop the driving of the flat heater 6, and turns off the third switch 16c and switches the fifth switch 16e to the broken line position to connect the connection relation between the halogen heater 5 and the quartz tube heater 4 in series. Only the series drive of the halogen heater 5 and the quartz tube heater 4 is performed. At this time, oven heating is performed with low power consumption of 200W.

In the oven heating with the small power consumption of 200 W, the temperature in the heating chamber soon becomes lower than the desired temperature, and then the control unit 14 switches to the 1300 W oven heating again.
The heating chamber temperature is maintained at the desired temperature by repeating the W oven heating, and the oven heating is terminated when the desired heating time has elapsed.

In such an oven heating, the driving mode of the halogen heater 5 is not an on / off driving mode, and the connection state with the quartz tube heater 4 is changed according to the temperature of the heating chamber. In this case, the power consumption is changed to a large or small value, and the brightness in the heating chamber does not change drastically as in the case of the ON / OFF driving mode.

When the temperature in the heating chamber reaches the desired temperature, not all the heaters 4, 5, and 6 are stopped, but the oven is heated with a small electric power of 200 W.
At this time, the oven heating is further advanced while the uneven heating of the food is eliminated, and good oven heating performance is executed.

In the above embodiment, each heater 4,
Although only oven heating has been described as heating by 5 and 6, grill heating can also be executed by similar control of each heater.

Further, a halogen heater 5 and a quartz tube heater 4
The switching of the connection state is performed according to the temperature in the heating chamber, but may be performed based on time.

According to the present invention, the driving control of the halogen heater based on the temperature of the heating chamber or the like is performed by controlling the power of each heater.
Since the power consumption is changed by connecting the connection states in series or in parallel, the brightness in the heating chamber does not extremely change based on the driving control of the halogen heater, and the cooking device does not change. Can be eliminated as a malfunction.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a microwave oven according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the microwave oven according to the embodiment of the present invention.

FIG. 3 is a circuit diagram of a microwave oven according to an embodiment of the present invention.

[Description of Signs] 1 Heating chamber 4 Quartz tube heater 5 Halogen heater 12 Temperature sensor 14 Control unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24C 7/02 320 F24C 7/04 301

Claims (1)

(57) [Claims] 1. A heating chamber for storing food, and a heating chamber for storing the food.
A halogen heater that heats and another heater that heats the food
And connection of each heater to power supply based on time
A cooker characterized by comprising a control unit that sets a state in series or in parallel .