Three.OrbitControls regular camera (zooming)

Questions
1

Help me please with THREE.OrbitControls

I want to regular camera.fov using THREE.OrbitControls

I use PerspectiveCamera:

var camera = new THREE.PerspectiveCamera(120, canvasArea.width / canvasArea.height, 0.1, 100);

And now I scale without OrbitControls as:

camera.fov = camera.fov + delta * 0.05;

camera.fov = Math.max(30, Math.min(camera.fov, 120));

this.updateMatrix();

delta - is e.deltaY value of wheel event.

How can I replace this code using OrbitControls ?

I want only move closer camera. Only scale