An HVAC duct is provided. The duct includes an outer tube having a fully continuous external perimeter. The duct further includes an inner tube capable of conveying forced air. The inner tube extends within the outer tube longitudinally. The duct also includes a plurality of support elements spannin
An HVAC duct is provided. The duct includes an outer tube having a fully continuous external perimeter. The duct further includes an inner tube capable of conveying forced air. The inner tube extends within the outer tube longitudinally. The duct also includes a plurality of support elements spanning between the outer tube and the inner tube. The elements extends along the outer tube and the inner tube longitudinally. The elements define a plurality of channels between the outer tube and the inner tube. The outer tube, the inner tube, and the elements are fully unitary.
대표청구항▼
1. An HVAC duct comprising: an outer tube having a fully continuous external perimeter, wherein said outer tube comprises an inner corner;an inner tube capable of conveying forced air, wherein said inner tube extending within said outer tube longitudinally, wherein said inner tube comprises an outer
1. An HVAC duct comprising: an outer tube having a fully continuous external perimeter, wherein said outer tube comprises an inner corner;an inner tube capable of conveying forced air, wherein said inner tube extending within said outer tube longitudinally, wherein said inner tube comprises an outer corner, wherein said inner tube comprises a first lateral cross section;a plurality of support elements spanning between said outer tube and said inner tube, wherein each of said outer tube and said inner tube comprises a first end portion and a second end portion, wherein said elements span along said outer tube and said inner tube longitudinally between said first end portions and said second end portions, wherein said elements defining a plurality of channels between said outer tube and said inner tube, wherein each of said channels comprises a second lateral cross section smaller in perimeter than said first lateral cross section, wherein a support element from said support elements spans between said inner corner and said outer corner, wherein said outer tube, said inner tube, and said elements are fully unitary and comprised of same material. 2. The duct of claim 1, wherein said channels containing a plurality of thermally insulating layers. 3. The duct of claim 2, wherein said outer tube, said inner tube, and at least one of said layers having a combined R-value between about 8 and about 12. 4. The duct of claim 3, wherein said outer tube having an R-value greater than said inner tube. 5. The duct of claim 3, wherein said at least one of said layers having an R-value between about 7 and about 10. 6. The duct of claim of claim 3, wherein at least one of said outer tube, said inner tube, and at least one of said elements including plastic. 7. The duct of claim 1, wherein said outer tube is curved longitudinally. 8. The duct of claim 1, wherein said outer tube includes at least two sides substantially parallel to each other. 9. The duct of claim 1, wherein said outer tube and said inner tube have differently shaped cross-sections. 10. The duct of claim 1, wherein said channels comprising a first channel and a second channel, said first channel containing a first thermally insulating layer material, said second channel containing a second thermally insulating layer material, said first material different from said second material. 11. The duct of claim 1, wherein said outer tube having an inner corner, said inner tube having an outer corner, one of said elements spanning between said inner corner and said outer corner. 12. The duct of claim 1, wherein said outer tube including an external corner, said outer tube having a corner piece installed onto said corner, said piece is configured to provide support to said outer tube. 13. The duct of claim 1, wherein said inner tube is shaped for conveying said air about 90 degrees from input of said air into said inner tube to output of said air from said inner tube. 14. A method comprising: manufacturing a one-piece, HVAC duct, wherein said duct comprising an outer tube having a fully continuous external perimeter, wherein said outer tube comprises an inner corner, wherein said duct comprising an inner tube capable of conveying forced air, wherein said inner tube comprises an outer corner, wherein said inner tube comprises a first lateral cross section, wherein said duct comprising a plurality of support elements spanning between said outer tube and said inner tube, wherein each of said outer tube and said inner tube comprises a first end portion and a second end portion, wherein said elements span along said outer tube and said inner tube longitudinally between said first end portions and said second end portions, wherein said elements defining a plurality of channels between said outer tube and said inner tube, wherein each of said channels comprises a second lateral cross section smaller in perimeter than said first lateral cross section, wherein a support element from said support elements spans between said inner corner and said outer corner. 15. The method of claim 14, further comprising: filling said channels with a plurality of thermally insulating layers. 16. The method of claim 15, wherein said outer tube, said inner tube, and at least one of said layers having a combined R-value between about 8 and about 12. 17. The method of claim 16, wherein said outer tube having an R-value greater than said inner tube. 18. The method of claim 16, wherein said at least one of said layers having an R-value between about 7 and about 10. 19. A method comprising: conducting forced air through an HVAC duct, wherein said duct comprising an outer tube having a fully continuous external perimeter, wherein said duct comprising an inner tube capable of conveying said forced air, wherein said duct comprising a plurality of support elements spanning between said outer tube and said inner tube, wherein each of said outer tube and said inner tube comprises a first end portion and a second end portion, wherein said elements span along said outer tube and said inner tube longitudinally between said first end portions and said second end portions, wherein said elements defining a plurality of channels between said outer tube and said inner tube, wherein said outer tube, said inner tube, and said elements are fully unitary, wherein said channels containing a plurality of thermally insulating layers, wherein said outer tube, said inner tube, and at least one of said layers having a combined R-value between about 8 and about 12. 20. The method of claim 19, wherein said outer tube having an R-value greater than said inner tube, wherein said at least one of said layers having an R-value between about 7 and about 10. 21. A device comprising: an HVAC duct comprising a polygonal outer tube with an inner corner, an inner tube with an outer corner and a first lateral cross section, and a wall spanning between the inner corner of the outer tube and the outer corner of the inner tube, wherein the inner tube includes conditioned forced air, wherein each of the outer tube and the inner tube comprises a first end portion and a second end portion, wherein the wall spans along the outer tube and the inner tube longitudinally between the first end portions and the second end portions such that a cavity between the outer tube and the inner tube is defined with a second lateral cross section smaller in perimeter than the first lateral cross section, wherein the outer tube, the inner tube, and the wall are a single-piece.
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