Continuous water wash hood type ventilating system

Abstract

A continuous water wash hood type ventilation system for installation over one or more cookers, wherein exhaust air is drawn into and passed through one or more hoods for scrubbing by a spray of recirculated solution, including a water-detergent combination, with each hood incorporating a canopy formed of a front, back, side and top walls, an exhaust outlet provided through the top wall, an exhaust chamber formed within the canopy by means of a series of arranged baffles, generally comprising an upper, intermediate, and lower baffle, all staggered, to adequately pass the exhaust gases through the canopy to achieve scrubbing and discharge, and for properly channelling the collection of the scrubbing solution within a basin for draining to a supply and recirculation reservoir. The recirculation unit of this invention includes its reservoir, a pump for recirculating the solution to the various spray heads embodied within the exhaust hoods, the reservoir holding the supply of water-detergent solution, and additional water may be added to the reservoir, to replenish any depleted stock, while further adding a quantity of detergent so as to maintain a specified concentration of the solution for use within the ventilating system; a drain may be provided for flushing all or part of the solution, and which accumulates grease and debris for collection of such impurities before the soiled water is discharged to the sewer system.