What should I do if the kitchen exhaust fan keeps ringing when it is in use

Depending on the direction of the wind, if the exhaust smoke happens to be blown into the window, the window should not be opened, and if the exhaust smoke happens to be blown to the other side by the wind, then the window can be opened.

The kitchen exhaust fan keeps squeaking, which should be caused by the oil smoke adhering to the exhaust fan, resulting in a decrease in lubrication and a greater resistance.

Find a professional to fix it, maybe there is dust inside!

Adding a governor is a way, but it seems to take up a bit of space, fixed on the wall and not very convenient, there is also a way to connect a capacitor in series on the power supply inside the electric fan, the capacity is selected between 1 micro-method, the capacity is small and the wind is small, the capacity is large and the wind is large, and a switch can be connected in parallel on the capacitor, and the switch is closed when not needed, just like the original. If you have hands-on ability, you can try it. Stay safe.

Why can't you press? Don't you have an exhaust duct? Or no facades? There are external walls that can be opened for exhaust fans to exhaust air to the outside. It is also possible to have an exhaust duct. If there is no external wall, you can consider opening holes in the interior wall and pulling soft or hard pipes to the holes in the window or exterior wall to exhaust the air.