Single suction inlet evaporative cooler pump apparatus

Pumps – Motor driven – Electric or magnetic motor

Patent

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Details

41742311, 415230, F04D 2910

Patent

active

054315484

ABSTRACT:
Pump apparatus for an evaporative cooler includes an impeller housing sealed on its top wall by a closed cell foam element and a bearing and seal element. The impeller housing has only one water inlet and one water outlet. The sealing of the impeller housing allows the level of the water in which the pump is disposed to be substantially lower than with prior art pumps, and substantially eliminates air intake into the impeller housing except through the one water inlet. Water outflow is only through the impeller housing outlet. Two embodiments are illustrated.

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patent: 3806975 (1974-04-01), Fyfe
patent: 4856971 (1989-08-01), Koble
patent: 4882806 (1989-11-01), Davis
patent: 5055006 (1991-10-01), Kobayashi et al.
patent: 5061157 (1991-10-01), Arakawa
patent: 5205725 (1993-04-01), Pattison

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