US 2001/0017165 A1 · Insulating air conduit

Abstract

This invention is related to ultra-light conduit for used air and a method for construction of such a conduit with sandwich sheet type of material such as “THERMO-FOIL™” permitting to avoid losses of heat and humid air. The method of construction of a used air rectangular conduit includes the following five (5) steps: 1) cutting of a sandwich sheet 2) sealing around the sandwich sheet 3) heat formation of lengthwise channels on the surface of sandwich sheet 4) assembling the sandwich sheet into a conduit of a predetermined length and 5) installing a lengthwise vertical reinforcement into the conduit and providing a male adaptor to a fore end of the conduit which could be adapted to an aft end of a joining conduit.

Claims20

Dependent claims

An air duct comprising:

one or more segments, each segment disposed longitudinally relatively to a major axis 32 parallel to the air flow, each segment comprising a wall defining an internal space that permits flow of said air, said wall being uniformly thick and made of a sandwich material comprising air cells contained between a first external film and a second internal film, said second internal film coinciding with an internal space,
each said segment comprising an upstream end 36 and a downstream end 34, said upstream end 36 and said downstream end 34 being opened, each segment comprising means for coupling fitted into said downstream end and posing as a male end to join a segment to another segment, and an evacuation conduit to a female end of another evacuation conduit;
said upstream end 34 to pose as female end to join with said means for coupling.

A method of construction of air duct made with rigid insulating material comprising a sandwich made of air cells contained between a first external film and a second internal film, said air duct comprising a wall placed around a major axis parallel to fluid flow direction, said wall comprising a longitudinal union of a first flat end and a second flat end, said air duct comprising opened upstream and downstream ends, said method of construction comprising the following steps:

step of cutting said sandwich insulating material demarcating a perimeter of predefined dimension;
step of sealing said perimeter to proof said sandwich to prevent liquid or gaseous fluid exchanges between the interior of said insulating material and the exterior, said step of sealing comprising a step of crushing of said first flat end and said second flat end;
step of folding said sandwich around said major axis according to a desired form of section;
step of assembling of said first flat end and said second flat end with means of adhesion, to complete said form of section;
step of installation of a rigid adaptor fitting into said downstream end.

2 more elements

Dependencies are inferred from the claim text.

Insulating air conduit

Life of this patent

Insulating air conduit

Life of this patent

Abstract

Claims20