Drying and gas or vapor contact with solids – Apparatus – For diverse operations on treated material
Patent
1985-10-01
1987-06-23
Schwartz, Larry I.
Drying and gas or vapor contact with solids
Apparatus
For diverse operations on treated material
34 41, 34155, 34242, F26B 1310
Patent
active
046741976
ABSTRACT:
A heat treatment tunnel for the treatment of fibers, threads slit film or the like fibrillary material used in the textile field is arranged to extend horizontally. The material to be heat treated is transported along a travel path, in endless length form, through the horizontally arranged tunnel. This tunnel includes a heat-insulated housing having an inlet slot for entry of the material and an outlet slot for withdrawal of the material from the housing; a fan chamber; a fan arranged within the chamber for effecting circulation of a gaseous treatment medium within the housing; a heater disposed downstream of the fan for heating the treatment medium; a fan intake connecting pipe positioned either above or below the traveling material to draw the gaseous treatment medium away from the travel path and fan exhaust openings positioned either below or above the traveling material; i.e., opposite to the location of the fan intake connecting pipe, to direct the gaseous treatment medium toward the travel path. The heater extends in parallel with an in close juxtaposition to the travel path over the entire length and width of the travel path. A screen wall is arranged above and below the heater for regulating the flow of treatment medium whereby heat is retained around the heater to provide a source of uniform heat across the width and length of the traveling material. Also, a seal or closure is provided for sealing marginal zones of the heater so that the zones are gas-impermeable; i.e., no gas can pass into or out through the zones.
REFERENCES:
patent: 2629162 (1953-02-01), Peck
patent: 2872173 (1959-02-01), Munker
patent: 3722899 (1973-03-01), Sedwell
Schwartz Larry I.
Vepa Aktiengesellschaft
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