JPS6345601Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for a complex cooker that can perform oven cooking and high frequency cooking.

A conventional device of this type is equipped with a gas burner for oven cooking, a magnetron for high-frequency cooking, and an output switching circuit that can freely switch the output of the magnetron between large and small in conjunction with the opening and closing operation of the gas cooker.
When performing oven cooking alone or at the same time as high-frequency cooking, reduce the output of the magnetron so that the food is evenly heated to the inside, and when performing high-frequency cooking alone, reduce the cooking time as much as possible. It is known that the output of the magnetron is increased in order to shorten the length (Japanese Utility Model Publication No. 56-46196).

However, after opening the gas cooker and performing oven cooking alone, or after performing oven cooking and high frequency cooking at the same time,
When performing high-frequency cooking alone, if you forget to open the gas cooker, you may think that the output of the magnetron is increasing, but in reality it is decreasing as you open the gas cooker. There is an inconvenience that the desired cooking cannot be performed.

The purpose of the present invention is to provide an apparatus that eliminates the above-mentioned disadvantages, and includes a gas burner 1 for oven cooking and a magnetron 2 for high-frequency cooking.
and a switching circuit 3 that switches the output of the magnetron 2 to low when performing oven cooking or high-frequency cooking at the same time and to high output when performing high-frequency cooking alone, the output switching circuit The output of the magnetron is switched to the small output side only when the gas timer circuit 10 and the switch 23, which closes the changeover switch 4 interposed in the gas tank 3 in conjunction with the opening operation of the gas tank, are closed.
As shown in FIG. 1, the composite cooking device is equipped with a gas burner 1 on the lower side of an oven chamber 5 housed therein, and a magnetron 2 on the upper side thereof, and further includes a hot air circulation fan 6 and the magnetron in the oven chamber 5. A cooling fan 7 is provided near the cooling fan 2.

In FIG. 1, 8 indicates the front door of the oven storage 5.

The operating circuit 9 of the gas burner 1 consists of a gas timer circuit 10 and a combustion control circuit 11, as shown in the second figure. The gas timer circuit 10 includes a timer motor 10b connected in series to a timer contact 10a, and the timer contact 10a is closed by setting an operator (not shown) and opened by the timer motor 10b after a set time has elapsed. .

During the set period of the gas timer circuit 10 in which the timer contact 10a is kept closed, the combustion control circuit 11 is energized via the timer contact 10a, thereby causing the gas burner 1 to be ignited. It was to so.

In the case shown in the second figure, an auxiliary switch 12 is provided between the timer contact 10a and the timer motor 10b.
Intervention was made so that it was opened by switching the operator to the continuous operating position.

The operating circuit 13 of the magnetron 2 includes a second timer circuit 14 and a drive device 15.

The timer circuit 14 for high frequency cooking is constructed by connecting a relay 16 in parallel with the timer motor 14b to a series connection circuit of a timer contact 14a and a timer motor 14b. Like the contact 10a, it is closed by setting an operator (not shown), and is opened by the timer motor 14b after a set time has elapsed.

During the set time of the high-frequency cooking timer circuit 14 in which the timer contact 14a is kept closed, the relay 16 is energized and the pair of contacts 1
The drive device 15 is energized via 6a, 16a,
This enabled magnetron 2 to be activated.

The output switching circuit 13 is provided within the drive device 15 and includes two first and second capacitors 1.
The changeover switch 4 is connected to the first capacitor 17 side of one of the parallel connection circuits 7 and 18, and when the changeover switch 4 is closed, both capacitors 1
It is possible to freely switch between a state in which the capacitances of capacitors 7 and 18 are combined and the output of the magnetron 2 becomes large, and a state in which the first capacitor 17 is electrically disconnected when it is opened and the output of the magnetron 2 becomes small. A manual switch 19 is further interposed and connected to the first capacitor 17 side, so that the output of the magnetron 2 can be switched between large and small by opening and closing the switch 19 when using only high frequency cooking.

The changeover switch 4 is connected to the timer motor 10b.
The normally-closed contact of the relay 20 is connected in parallel with the relay 20.

In FIG. 2, 21 is a door switch that is closed when the front door 8 of the oven storage 5 shown in the first diagram is closed, and 22 is a self-resetting type door switch that is closed by pressing a start button (not shown). a start switch, 24 is an operating circuit for the cooling fan 7 shown in the first diagram;
25 indicates an AC power source.

Reference numerals 26 and 27 indicate an operating circuit and a relay for the hot air circulation fan 6 shown in the first figure, which is energized through the timer contact 10a of the gas timer circuit 10 during the set time of the gas timer circuit 10.

Furthermore, 28 is a self-holding contact of the relay 27;
Reference numeral 29 indicates a self-holding contact of the relay 16.

Next, to explain its operation, in order to perform oven cooking using the gas burner 1, the temperature adjustment knob (not shown) and the gas timer circuit 10 are set, and then the gas cooker is opened.
Then press the start button again.

According to these series of operations, door switch 2
1. Start switch 22, Kotuku switch 23
and the combustion control circuit 11 via the timer contact 10a.
is energized, relay 20 is energized via auxiliary switch 12, and oven cooking is performed using gas burner 1 until the time set by gas timer circuit 10 elapses and timer contact 10a is opened.

At this time, the changeover switch 4 is opened and the output changeover circuit 3 is in a state of outputting a small output.

In order to perform high frequency cooking using the magnetron 2, the timer circuit 14 for high frequency cooking is set and the start button is pressed. At this time, since the gas timer circuit 10 is open, the changeover switch 4 that intervenes in the output changeover circuit 3 is kept at the high output side, that is, in the closed state, regardless of whether the switch 23 is opened or closed. The output of magnetron 2 is in a state where a large output is produced. Therefore, if you need a small output of it,
All you have to do is open the manual switch 19.

According to these series of operations, door switch 2
1. Start switch 22 and timer contact 14a
The relay 16 is energized via the electronic cooking timer circuit 14, and high-frequency cooking is performed by the magnetron 2 until the time set by the electronic cooking timer circuit 14 elapses and the timer contact 14a is opened. Furthermore, in order to perform oven cooking and high-frequency cooking, it is sufficient to combine the above-mentioned operations, and by performing both the closing of the gas cooker switch 23 in conjunction with the gas cooker opening operation and the setting operation of the gas timer circuit 10a. , the relay 20 is energized and the selector switch 19 connected to the high-voltage capacitor circuit 3 is opened, so the first circuit 3a is closed and the output of the magnetron 2 is always small.

Moreover, the output of the magnetron 2 is made small only after opening the gas stove and setting the gas timer circuit 10a, so it is possible to open the gas stove and perform oven cooking alone. If you perform high-frequency cooking alone after cooking or after performing oven cooking and high-frequency cooking at the same time, even if you forget to close the gas cooker, that is, leave the switch 23 in the closed state, the gas timer circuit 10a will not work. The output of the magnetron will not decrease unless the setting is performed. Therefore, with the manual switch 19, the output of the magnetron can be increased or decreased, eliminating the malfunction of the magnetron that occurs in the conventional apparatus, and allowing desired cooking to be carried out.

In this way, according to the present invention, the switch 23 which closes the changeover switch 4 interposed in the output changeover circuit 3 of the magnetron 2 in conjunction with the opening operation of the gas tank, and the output of the magnetron are changed only when the gas timer circuit 10 is closed. Since the output of the magnetron 2 is switched to the low output side, when performing oven cooking alone or simultaneously with high frequency cooking, the output of the magnetron 2 can be made low without fail, ensuring that the food to be cooked is evenly distributed inside. The magnetron can be heated and the desired cooking can be carried out without failure, and when the gas timer circuit 10 is opened by completing the time setting, the output of the magnetron always returns to a high level, unlike the conventional example. There are no problems that could cause problems.

[Brief explanation of the drawing]

FIG. 1 is a cutaway side view showing an example of a composite cooking device;
FIG. 2 is a circuit diagram showing one example of implementing the present invention. 1... Gas burner, 2... Magnetron, 3...
...Output switching circuit, 4...Selector switch, 23...
Switch.

Claims (1)

[Scope of utility model registration request] A gas burner 1 for oven cooking, a magnetron 2 for high-frequency cooking, and a switching circuit 3 that switches the output of the magnetron 2 to low when performing oven cooking or high-frequency cooking at the same time, and to high output when high-frequency cooking is performed alone. In a composite cooking device, the output of the magnetron is changed only when the switch 23 and the gas timer circuit 10 are closed, which closes the changeover switch 4 interposed in the output changeover circuit 3 in conjunction with the opening operation of the gas cooker. A control device for a composite cooker that switches the output to the low output side.