My oven has gas burners in the top and bottom of the oven, and a tiny fan in the back for convection bake. The wee fan is meant to help distribute heat evenly throughout the oven. Convection is meant for baking multiple trays on both racks - it spreads the heat evenly throughout.
The air fryer has a big fan right behind the big heating element, which sits a few inches above the food, and blasts heat directly onto the food.
Similar components, but entirely different results.
Your comparison is rightly dispels the misconception that any “frying without oil” is happening though. An air fryer is closer to an oven, convection or otherwise, than it is to a deep fryer and pan-frying with oil. You just won’t get the same speed or results with a convection oven, though. They’re different designs.
theunknownmuncher@lemmy.world 5 weeks ago
I was like you once and believed a convention oven and air fryer are the same thing and produce the same results. But I was wrong!
There’s actually a subtle but crucial difference between an air fryer and a convection oven. A convection oven only circulates air around inside the oven, keeping the steam trapped with the food, while an air fryer actually removes all of the steam away from the food, allowing it to get much crispier much faster than is possible with a convection oven.
Karyoplasma@discuss.tchncs.de 5 weeks ago
so an air fryer is more like a small convection oven?
if you want the steam to escape, you can just open the oven door for a few seconds and there it goes.
acosmichippo@lemmy.world 5 weeks ago
also the air circulation is more intense in an air fryer, and it’s a smaller enclosed space which is easier to keep at a high temperature. both of these also help food cook more evenly.
grue@lemmy.world 5 weeks ago
I wonder if I could DIY an air fryer with a heat gun, a metal box, and a PID controller.
theunknownmuncher@lemmy.world 5 weeks ago
That would help, but I doubt it would be as effective as a real air fryer that is actively blowing air while heating it, instead of just circulating it. An air fryer gets really loud because it is moving so much more air.