Tobacco leaf curing system

Tobacco – Cigar or cigarette making – Tobacco feeding

Patent

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Details

131135, 34 46, 34225, A24B 102

Patent

active

039372278

ABSTRACT:
A tobacco leaf curing system comprising an air tight curing house divided by a porous floor plate into an upper curing barn and a lower blast chamber, the curing barn being provided at its upper portion with a circulation port and an outlet port; a circulation duct passageway containing duct fan means and heating means, said circulation duct passageway communicating with the circulation port for drawing air from the curing barn, said air being compressed by said duct fan means and heated by said heating means and then reintroduced into the blast chamber through a blast port; an automatic temperature regulator associated with the burner of the heating means for automatically igniting or extinguishing said burner according to variations appearing on a wet-bulb temperature sensor so as to regulate the temperature and humidity of the air to be sent to the blast chamber; an inlet control system comprising a cylindrical damper provided with openings and located in said circulation duct system, said inlet control system being so arranged that, with the rotation of said damper, the inlet port is automatically opened in a progressive manner as the leaf setting stage begins and is closed again before the stem drying stage is completed, said inlet control system also varying the mixing ratio of the external air to the recycled, heated air being supplied to the blast chamber for each curing stage; and an outlet port control mechanism which is located at the outlet port opening on a side of said curing barn, said outlet port control mechanism automatically opening or closing according to the amount of air which is drawn through the inlet port of the inlet port control system so that the air which has passed through the curing barn may be partially exhausted through the outlet port to the exterior of said barn.

REFERENCES:
patent: 585759 (1897-07-01), Hysore
patent: 1968764 (1934-07-01), Harris
patent: 2097168 (1937-10-01), Vellner
patent: 2229942 (1941-01-01), Touton
patent: 2606372 (1952-08-01), Foulder et al.
patent: 2779105 (1957-01-01), Park
patent: 3233339 (1966-02-01), Long et al.
patent: 3397465 (1968-08-01), Carmichael
patent: 3664034 (1972-05-01), Wilson

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