US 5,472,342 A · Kitchen exhaust hood grease extractor

Abstract

A grease collector housing is mounted directly atop a filter-containing kitchen exhaust hood at the exhaust collar. The housing includes a liquid reservoir at the bottom, a 360 degree shallow conical spray head immediately above the reservoir, an array of baffle-type grease filters above the spray, a filter-cleaning spray head above the array and a connector above it to the exhaust duct. A detergent water supply and removal system includes a pump and associated valving for moving a water-based solution through the spray heads and sprays as and when needed to remove grease from kitchen exhaust fumes and to wash down any residual grease from the filters and reservoir in the housing. A disposable cartridge-type water filter is included in the recirculating liquid system. Controls automatically provide the proper valve operating sequence for the operations as and when needed.

Claims23

Dependent claims

A grease collector system for a fume collecting hood coupled to an exhaust blower and comprising:

a housing mountable between the hood and the exhaust blower;
an array of permanent-type filters removably mounted in the housing and defining a vertically extending boundary for filtering Of air passing generally horizontally between an air entry chamber and an air exit chamber;
a first spraying device located in the entry chamber and arranged to establish a chamber-partitioning spray in the entry chamber;
an air inlet in the housing below the partitioning spray to admit fume-bearing air to the air entry chamber;
a wall in the entry chamber and arranged with respect to the filter array to force air entering the housing through the inlet to pass through the spray before entering the filters;
and
an outlet in the housing above the array and communicating with the exit chamber to receive air that has passed through the spray and filters.

4 more elements

Dependencies are inferred from the claim text.

Kitchen exhaust hood grease extractor

Life of this patent

Kitchen exhaust hood grease extractor

Life of this patent

Abstract

Claims23