The vacuum cleaner itself is larger and perhaps has a quieter motor than portable units, but it's conventional in design. A fan covered by a dust filter provides the suction.
But what about positioning the motor and fan on the other side of the dirt? Make the house airtight, and when using the vacuum close the usual exhaust ports, like the ones for the kitchen and bathrooms. Make an opening from the outside of the house to the inside, and have a fan in it blowing through a filter (for pollen etc.) toward the inside. In other words, have a fan that pressurizes the house. Behind each access port, have a tube goes directly to a screened-in container outside. The user closes up the house, starts the pressurizing fan, and uses the flexible pick-up tubes as in the conventional arrangement. Dust and gases get removed from the house, and the larger pieces of trash get caught in the screened-in containers.
I see advantages to this kind of system:
The tube system is simple and cheap.
Short tubes going outside are unlikely to clog.
Instead of capturing most of the dust as with a conventional unit, you exhaust the dust to the outside. This exhaust doesn't need much of a filter. A screen would prevent you from littering the neighborhood.
Relatively clean incoming air goes to the fine filter. This would need infrequent replacement.
Pick-up tubes can be different sizes.
There's a possibility of quiet operation.
Would this be a practical system? Has anybody ever seen anything like it?
(||) Nehmo (||)
(||) Nehmo (||)