Pretty simple device.

There is a piece in the oven that measures temperature, call it a thermometer.
There is a connection between the thermometer and the gas supply, the gas valve.
There is a temperature control knob on the front.
There is an on-off method built into the oven. This is controlled by the control mechanism.

Here's how it works.

You set the temperature and turn the oven on. Say you set it to 350F.

The gas valve opens and the gas ignites, whether by pilot light, electronic ignition or match.

The oven burns some gas and the oven heats.

As the oven heats, the oven thermometer measures the temperature and reports that back to the control mechanism.

The control mechanism is set to respond to a range around the temperature you set. It will go on at a temperature slightly below what you set and off at a temperature slightly above the temperature you set. In this instance, let's say that it is set at 10F above and below the temperature on the knob.

As the oven heats, the thermocouple reads the temperature. Then the temperature gets to 350 + 10F, it will stop heating. As the oven cools, it will continue reading the temperature. When the temperature gets to 350 - 10F, it will turn back on and heat until it hits 350 + 10F. And so and so on and so on.

The oven is never really "at" 350F except in passing through on the way up and down, but it averages 350F over the course of the baking period.

Barry


"Alan" > wrote in message ...
i'd like to know how's the gas oven works?any web site or someone could give me the infos?
thanks
alan