http://www.quiltingboard.com/posts/list/12287.page
I googled pvc pipe frames, and came up with this one from this board. My husband made me one much like this, but I couldn't reach all the way across, so he cut it down to I would say 18 inches or so across. Of course, the quilt has to be basted, ( I pin baste) To quilt, I start in the middle, then move the quilt aroud as I finish each section. I have done queen size quilts on it and no problem with the backing bunching or puckering. I have the same problem you do, to little space for a full size frame, although I do have one that my grandfather made for my grandmother probably 85 or so years ago. I would love to be able to use it. There was also a post on this board about a fan type frame that looked to be very handy. I would think you would be able to roll the quilt and take it down for storage. Maybe the person who has it will post again. Or you could google "fan quilt frame" Good luck.
Phyllis