Air ring having a circular array of a large multiplicity of subs

Details Air ring having a circular array of a large multiplicity of subs Air ring having a circular array of a large multiplicity of subs

1981-04-13

1983-02-15

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

For hollow article

34 20, 34106, 264569, 425 72R, 4253261, F26B 1900, B29D 720

Patent

active

043732739

ABSTRACT:
An air ring of the type mounted concentrically with a moving tube of plastic at a point close to where the plastic emerges from an annular die to receive, guide and discharge air in a desired direction to expose cooling air to the surface of the tube, the air ring having a circular array of a multiplicity of substantially parallel, cell-like passages, each passage having orthogonal lateral dimensions (X and Y directions) transverse to the local direction of flow (Z direction) that are less than one-half of the flow length, and divide the flow path to the outlet into a multiplicity of individual cell-like flow paths, the aggregate flow area presented by the passages being at least 80% of the inlet surface of the array. The array of passages and cooperating surfaces of the air ring are adapted to deliver a general nonhomogeneous flow to the array, to momentarily divide the flow into discrete, parallel, oriented streams which remerge into a second general, radially directed flow toward the surface of the tube, the multiplicity of streams being effective to orient air flow and to remove major turbulences and vortices in both orthogonal directions with relatively little pressure drop occuring across the array.

REFERENCES:
patent: 2926384 (1960-03-01), Hertz et al.
patent: 2952874 (1960-09-01), Doyle
patent: 3176347 (1965-04-01), Shaul
patent: 3210803 (1965-10-01), Najar

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