JPS5856055B2 - High frequency heating device with gas oven - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a start switch for a high frequency heating device with a gas oven.

A conventional microwave oven, which is a high-frequency heating device, for example, is equipped with a start switch that starts high-frequency oscillation.

The purpose of this is to oscillate high frequencies without placing a load, i.e., food to be cooked, inside the oven, and the impedance seen from the magnetron, which is the high frequency generator, toward the oven is high. There is a risk that the emitted microwaves will be reflected and destroy the magnetron, and this is to reduce that risk as much as possible.

Therefore, if you set the timer but it does not oscillate, and instead oscillates only when you press the start button, the probability of dry firing will be reduced.

On the other hand, with gas ovens, current flows through the solenoid valve coil simply by closing the timer contacts.

However, with both microwave ovens and gas ovens, when the door is open, combustion in the microwave and gas main burners must be stopped, and in particular, in hot air circulation type gas ovens, the circulation fan must be stopped. It was essential to prevent the risk of burns, and for microwave ovens, the start switch was released when the door was open, and for gas ovens, the circulation fan was stopped by installing a stop device linked to the door.

However, for a combined heating device that integrates a gas oven and a microwave oven, the conventional configuration requires a device that stops the operation of the magnetron and the circulation fan for the gas oven when the door is open. If it is provided as is, the configuration will become complicated.

In addition, the operability of these operation stop devices for multiple (simultaneous) use is complicated, making them inconvenient to use.

The present invention solves the above-mentioned conventional drawbacks by providing a start switch for the high-frequency heating means and a start switch for the gas circuit of the gas oven independently, so that the high-frequency heating and gas heating can be operated independently. operate at the same time
The purpose of this is to simplify the operability of combined use in which the operation is stopped simultaneously.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

Referring to FIG. 1, 1 is a timer contact of a first timer, and when the timer contact 1 is closed to the NO side and the timer motor 2 of the first timer is energized, the timer operates.

When the first timer contact 1 closes to the NC side and the second timer is turned, the timer contact 3 closes and the second timer operates.

When both timers are set, the first timer operates first, and after completion, the second timer operates.

When the simultaneous heating instruction switch 4, the heat sink, and both timers are set, both timers operate simultaneously.

5 is a start switch A that starts high-frequency oscillation from a magnetron, which is a high-frequency heating means, and 6 is a start switch A that starts high-frequency oscillation from a magnetron, which is a high-frequency heating means.
This is a start switch B that starts energizing.

This start switch A5 and start switch B
6 is closed by one operation button 9 when the door 10 is closed.

That is, when the door 10 is closed, the door key 11 is pressed against the spring 1.
Push up the door switch lever A13 with the force of 2.

However, since the door switch lever A13 is held down by the door switch lever B14, the start switch A5. - and start switch B6 cannot be closed.

If operation button 9 is pressed here, door switch lever B
14, in order to stop pressing the door switch lever A13, the door key 11 pushes up the door switch lever A13 and closes the start switch A5.3 and the start switch B6.

14 is an ignition switch, and 15 is a thermocouple that detects the ignition of the pilot flame and uses its thermoelectromotive force to send current to the coil 16 of the safety valve relay to keep the safety valve open.

By configuring the high-frequency heating device with gas oven in this way, when dielectrically heating the object with high frequency,
When the object to be heated is placed in the heating chamber, the door 10 is closed, and the first timer is turned, the timer contact 1 is closed to the No side.

Then, press operation button 9 to activate the high-frequency heating means (Magne).
ON operates and high frequency is supplied into the heating chamber.

When cooking with a gas oven, turn the second timer to close the timer contact 3, press the operation button 9, and press the ignition switch 14 to energize the coil 8 of the solenoid valve, which is the gas heating means. At the same time, the pilot flame is ignited in the igniter.

The ignition of this pilot flame is detected by a thermocouple 15, and the thermoelectromotive force causes current to flow through the coil 16 of the safety valve relay to open the safety valve and cause combustion to occur.

When using the magnetron, which is a high-frequency heating means, and the gas heating means at the same time, turn the first timer to set timer contact 1 to the No side, turn the second timer to close timer contact 3, and instruct simultaneous heating. Switch 4, operation button 9
, when the ignition switch 14 is pressed, a pilot flame is ignited in the igniter and electricity is applied to the solenoid valve coil 8, and the electromotive force from the thermoelectric body 15 flows to the relay coil 16 of the safety valve, keeping the safety valve open and releasing gas. While the food is cooked by combustion, the magnetron also operates to allow cooking to be done by dielectric heating.

As described above, according to the high-frequency heating device with a gas oven of the present invention, the heating operation can be operated using a single operation button for the start switch of the high-frequency heating means and the start switch of the gas heating means, thereby simplifying the operation. This is a high-frequency heating device with a gas oven that is highly efficient and easy to use.

[Brief explanation of drawings]

FIG. 1 is an electric circuit diagram of a high-frequency heating device with a gas oven showing an embodiment of the present invention, and FIG. 2 is a sectional view of the main part showing the mechanism of a start switch of the same main part. 1.3... Timer contact (timer), 5, 6
... Start switch, 8 ... Solenoid valve coil (gas heating means), 9 ... Operation button.

Claims (1)

[Claims] 1. A heating chamber that accommodates an object to be heated, a high-frequency heating means and a gas heating means that heat the object housed in the heating chamber, and an operating time control system for each of the high-frequency heating means and gas heating means. ), and 2 each controlling the operation of the high frequency heating means and the gas heating means.
A high-frequency heating device with a gas oven, comprising two start switches, the two start switches being operated simultaneously with one operation button.