Convector containing a flattened plastic tube spiral, and a...

F - Mech Eng,Light,Heat,Weapons – 28 – D

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26/145, 257/21

F28D 7/04 (2006.01) F28D 1/047 (2006.01) F28F 21/06 (2006.01)

Patent

CA 1049493

Abstract: there is provided a convector comprising a plastic tube arranged in the shape of a flattened helix, the major flat sides of which are displaced relative to each other in the axial direc- tion of the helix, such that the bend radius of the tube at the minor sides or the helix is substantially longer than half the distance between the major side of the flattened helix. There is also provided a method for manufacturing such a convector,wherein, starting from a supply of tubing, a bend is formed in the tube, said bend inserted in a slot in one of a pair of parallel support structures, each having a series of oblique and parallel slots, a fresh vend is formed in the tube and in- serted in a slot on the other structure, and so on.

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