Patent ID: 6858054
Filing Date: 2005-02-22
Classification: A61L,F24F

Abstract:
1. A storage chamber comprising an essentially closed space defined by a base sheet, flexible plastics material cover having a periphery which is connected to the base sheet but which cover is at least partially releasable from the base sheet to give access to the space, the cover having an opening therethrough, and a fan assembly including an electrically-driven fan mounted to the opening through the cover to drive air into the essentially closed space to inflate the chamber, characterised in that the fan assembly has a base plate defining an aperture therethrough which base plate is mounted to said cover with said aperture in register with the opening through the cover, and a first plenum chamber is formed on the upstream side of the fan whereby the fan draws air from the first plenum chamber and drives that air through the aperture in the base plate into said space, the fan assembly further including an air treatment unit disposed in or over a further opening through the base plate between said space and the first plenum chamber and a first filter disposed in or over an opening between the first plenum chamber and the external atmosphere, whereby the air driven into said space is a mixture of air drawn from the external atmosphere through the first filter and air drawn from said space through the air treatment unit into the first plenum chamber which latter air is circulated into the space.