A while back I saw a web page that explained the physics of it and can't find it so now but... yeah, it's actually impossible for a direct single-stage fan (which is what a normal domestic vacuum cleaner uses) to pull more than a few PSI against a closed air mass. A real vacuum pump needs a piston pump, multistage turbine, etc. And to vaporize water at "room temperature" you have to get down down to something like .5 psi, or around 29Hg of vacuum. That's actually a little more than is usually possible to achieve with something like a converted appliance pump.
(I know there's this video on Youtube showing a guy collapsing the walls of the "Spun steel pan" that makes up his homemade vacuum-cleaner-powered chamber but... there's a lot fishy about that video, and notable by its absence is a vacuum gauge. I'm thinking that's a *really* light gauge pan; even a pressure difference of a few PSI can deform something like that and that sort of pressure is of marginal use even for degassing castings. Vaporizing water? Fuggettaboutit.)
Vacuum cleaner companies love parlor tricks like picking up bowling balls with their vacuums but the notable thing there is that they always attach a *funnel* to the end of the hose. If their vacuum can pull even 1 PSI and they use a funnel 6 inches in diameter that's plenty enough to pick up a 12 pound bowling ball. A cleaner powerful enough to evacuate a vacuum chamber would have to be able to pick up that same bowling ball simply by pressing the crevice attachment snugly against it. That would be one scary vacuum cleaner.
(Edit: Granted technically you might indeed be able to somewhat accelerate the drying out of an object by putting it in a partial vacuum but you could get the same effect simply by raising the temperature a few degrees. Either way if you're putting the object in a sealed container you'll need to have some sort of desiccant in there with it to capture the water once it's out.)