Method and apparatus for circulating hot air in board drying app

Details Method and apparatus for circulating hot air in board drying app Method and apparatus for circulating hot air in board drying app

1985-04-18

1986-09-30

Makay, Albert J.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 54, 34149, F26B 304, F26B 2112

Patent

active

046140450

ABSTRACT:
Boards to be dried, such as veneer are placed, one after another, on a pair of fork conveyors disposed opposite to each other. The boards are kept in the form of layers separated and carried downwardly in this fashion, so that the boards can be dried by hot air blown and circulated in the horizontal direction through a space between the two conveyors during their downward voyage. The space between the two fork conveyors is divided into a central passage portion and right and left passage portions, and the flow amount of the hot air at the right and left passage portions is controlled to be somewhat less than the hot air at the central passage portion. In this way, possible dry cracking and wave-shaped shrinkage can be effectively prevented.

REFERENCES:
patent: 353816 (1886-12-01), Richards
patent: 1564491 (1925-12-01), Rees
patent: 3074180 (1963-01-01), Ahlstedt
patent: 3320677 (1967-05-01), Reitzel
patent: 3520396 (1970-07-01), Lingg
patent: 3848725 (1974-11-01), Toby
patent: 4562650 (1986-01-01), Nagasawa et al.

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