The main uses of crossflow fans in ovens are as follows:

1. Uniform heating: Crossflow fans circulate air to evenly distribute hot air to the inside of the oven. This helps ensure that food is evenly heated during grilling or cooking, and avoids overheating or uneven burning of the food surface.

2. Fast preheating: Crossflow fans can speed up the preheating of the oven. They promote air flow and quickly spread hot air to the inside of the oven, so that the entire oven quickly reaches the required temperature and shortens the preheating time.

3. Improve baking effect: Crossflow fans improve the air flow inside the oven and help to better transfer heat. They can reduce moisture on the surface of food during baking, promote crispness and uniform color of food. Crossflow fans can also help food form the ideal baking effect of crispy outside and soft inside more quickly.

4. Temperature regulation: Crossflow fans play a role in temperature regulation in the oven. They can help maintain temperature stability inside the oven. When the oven temperature exceeds the set value, the crossflow fan will help dissipate heat to prevent overheating. Conversely, when the oven temperature drops, the crossflow fan circulates hot air into the oven to increase the temperature.

5. Exhaust function: Some ovens are equipped with crossflow fans that have an exhaust function. By circulating air and exhausting hot air, the crossflow fan helps to remove smoke, steam and odors generated inside the oven, keeping the oven clean and comfortable.

In general, the role of the crossflow fan in the oven is to achieve uniform heating of food, rapid preheating, improve baking effects and temperature regulation, and exhaust smoke and steam inside the oven. They provide better temperature control and consistency in food baking, helping you get better cooking results.