IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0387128
(2003-03-13)
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우선권정보 |
CA-2142190 (1995-02-14) |
발명자
/ 주소 |
- Lessard, Marc
- Tremblay, Mona
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
2 |
초록
▼
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 follow
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.
대표청구항
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1. A method of construction of an 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
1. A method of construction of an 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 of:cutting said sandwich insulting material demarcating a perimeter of predefined dimension; sealing said perimeter of said sandwich to prevent liquid or gaseous fluid exchanges between the interior of said insulting material and the exterior, said step of sealing comprising a step of crushing said first flat end and said second flat end; folding said sandwich around said major axis according to a desired cross-sectional form; assembling said first flat end and said second flat end with means of adhesion, to compplete said cross-sectional form; and installing a rigid adaptor fitting into said downstream end. 2. A method as defined in claim 1, wherein the duct is a parallelepiped air duct of rectangular section comprising a top, a bottom and opened and closed sides, said method further comprising the steps of:heat folding said sandwich to obtain said top, said bottom, said closed side and said opened side forming said rectangular air duct; preparing a C-reinforcement, by shaping a web and two wings from said insulting material; and installing said wings respectively in contact with said top and said bottom, said web serving as reinforcement joining said top to said bottom. 3. A method as defined in claim 1, wherein said sandwich is a sheet comprising several layers of material, four sides, and said perimeter, and wherein said step of sealing said perimeter consists in heating said perimeter with an angle iron in such a way that the layers of said sandwich melt to create four thin bands respectively on each of said four sides of said sheet, two of said thin bands coinciding with said first flat end and said second flat end, said first flat end, when installed, being joined to said second flat end.4. A method as defined in claim 2, wherein the width of said first flat end is larger than the width of said second flat end to cover completely any joint between said top and said opened side, said first flat end being installed externally to said opened side, and said second flat end of said opened side being placed under said top side.5. A method as defined in claim 2, wherein said step of folding said sandwich consists in heating said sandwich with and angle iron to produce three V grooves on said internal film of said sandwich, said V grooves having 135° sides to form a section of an isosceles triangular form when said sandwich is placed on a flat surface, said V grooves respectively demarcating a first limit between said top and said closed side, a second limit between said closed side and said bottom and a third limit between said bottom and said opened side; when said sandwich is folded to form said rectangular air duct, said 135° sides join to define corners of said rectangular air duct.6. A method as defined in claim 2, wherein said step of assembling consists in sticking said first flat end of said top onto said opened said adhesive band all along a length of said first flat end.7. A method as defined in claim 1, wherein said step of folding comprises an additional step to circularize said air duct sandwich sheet with a folding advice.8. A method as defined in claim 7, wherein said step of installation comprises the jointing of a circular adaptor in said upsrteam end, said adaptor being rigid and comprising a cylindrical wall and two ends.9. A method as defined in claim 1, wherein said means for adhesion is an aluminized band of the Mactac™ type located on all length of joining of said first flat end to said second flat end.10. A method as defined in claim 7, wherein said step of sealing of said perimeter of said insulating material consists of heating said perimeter by pressing a heated angle iron so that the layers of sandwich that form the insulating material melt to create a thin band and a 135° side 134, this band being placed under said cylindrical wall, said second flat end comprising said chamfered 135° side 130 being placed outside of said cylindrical wall.11. A method as defined in claim 10, wherein said second flat end 124 leans against said interior face of said cylindrical wall to form continuous cylindrical wall.
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