Cleaning and liquid contact with solids – Processes – Work handled in bulk or groups
Patent
1977-03-07
1978-07-04
Bashore, S. Leon
Cleaning and liquid contact with solids
Processes
Work handled in bulk or groups
98115R, B08B 700, B67C 1100
Patent
active
040986160
ABSTRACT:
A recirculating exhaust hood for a dishwasher may be comprised of an exhaust duct, a positive pressure plenum, a negative pressure plenum, and a fan for circulating air from the communicating dishwashing cavity through the positive and negative pressure plenums, and the exhaust duct. Air drawn through the intake of the fan is circulated through the positive pressure plenum to a supply slot. High velocity air exiting from the supply slot to a contiguous intake port of the negative pressure plenum creates a high velocity stream of air which by entrainment or by Venturi effect draws warm moisture laden air from the dishwashing cavity into the negative pressure plenum. The entrained moist warm air is then recirculated to the positive pressure plenum by means of the fan. A portion of the output of the fan is directed to an exhaust duct and removed from the dishwashing system. One or more static pressure plates, drying coils, or heat exchanging coils may be appropriately disposed in the positive pressure plenum in order to couple energy from the warm moist air being circulated through the dishwashing cavity to a working fluid, to dry the air or to create the desired pressure differential.
REFERENCES:
patent: 3728866 (1973-04-01), Layton
patent: 3745908 (1973-07-01), Mayberry
patent: 3811250 (1974-05-01), Fowler
Dorius John
Moriarty Daniel
Bashore S. Leon
Elster's Inc.
Konkol Chris
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