Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1978-09-08
1981-09-29
Schwartz, Larry I.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 34, 34212, 34216, 99475, 99483, 426305, 426455, F26B 304
Patent
active
042914728
ABSTRACT:
A method and apparatus for drying articles, such as fruit, which are treated with an aqueous coating such as a wax composition to preserve and to enhance the appearance of the article. The drying apparatus comprises a plurality of housing sections, each providing substantially closed chambers through which a conveyor means carries and advances articles to be dried at a selected rate of speed. The conveyor and a strata of articles carried thereon form a perforate zone in each housing section. Drying air is directed downwardly into a side passageway means at one side of each chamber to pass into a plenum chamber below the conveyor means and to then flow upwardly and substantially uniformly through the conveyor means and strata of articles thereon. Drying air is drawn from an upper chamber above the conveyor means by a blower which directs the drying air into side passageway means downwardly and into the plenum chamber of the next adjacent downstream housing section. Flow of drying air through each of the housing sections is maintained at a substantially equal flow rate. A method of drying aqueous coatings on fruit by passing drying air upwardly through a strata of fruit at substantially a uniform flow rate over the entire area of the strata of fruit, and controlling the temperature and humidity of the drying air.
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Brogdex Company
Schwartz Larry I.
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