APPARATUS FOR GAS TREATMENT OF PRODUCTS Russian patent published in 1998 - IPC

FIELD: food-processing industry, in particular, cooling, heating or drying equipment. SUBSTANCE: apparatus has housing with inlet and outlet openings. Belt conveyor conveys products through housing along path extending from inlet opening to outlet opening. Belt conveyor is partially covered with tunnel which extends over part of path between inlet and outlet openings and is provided with perforated upper wall. Gas suction device is connected with tunnel for vacuumizing tunnel inner cavity. Gas conditioning device treats gas circulated by means of gas suction device from inner cavity of tunnel to its outer side and returned into inner cavity of tunnel through its perforated upper wall. Thus, gas sucked through perforated upper wall of tunnel at its outer side (outside tunnel) forms gas flows running onto belt conveyor. EFFECT: simplified construction, provision for regulation of gas flows and improved hygienic factors. 12 cl, 7 dwg