Hi Firochromis, welcome to the forum.
Not all orchids takes direct morning sun even in the morning especially during hot summer. Phals particularly, will burn if expose to direct sun even in the morning. With regards to phal flowers being exposed, they might drop, I'm not sure because I haven't experience it.
If I were you, I would put a sheer curtain to filter the direct morning sun. I also have phals growing on window sill that get direct sun and a double layer of sheer curtain is doing great job, I use double layer because my window is facing the afternoon sun. In your case, maybe one layer is enough.
The experts will give you more info when they wake up.