Apparatus for cleaning heating, ventilation, and air conditionin

Details Apparatus for cleaning heating, ventilation, and air conditionin Apparatus for cleaning heating, ventilation, and air conditionin

1988-10-27

1990-11-06

Nozick, Bernard

Gas separation

Multiple bag type filters in chamber

55350, 55356, 55473, 55484, 153401, B01D 4600

Patent

active

049683330

ABSTRACT:
An apparatus for cleaning ducts for heating, ventilation, and air conditioning systems in a building includes a portable primary filter unit and a portable blower and final filter unit. The contaminant material is first loosened in the ducts and is entrained in a stream of air produced by the blower and final filter unit at a vacuum of approximately 4,000 cfm. The air entrained contaminants are passed upwardly through cylindrical filter elements in the primary filter unit where over 90% of the contaminants are removed. The partially contaminated stream is then directed into a fan chamber in the blower and final filter unit, and is then directed through a high efficiency particulate air filter where the remaining contaminants are removed before being discharged into the interior of the building.

REFERENCES:
patent: 3926596 (1975-12-01), Coleman
patent: 4017281 (1977-04-01), Johnstone
patent: 4306893 (1981-12-01), Fernando
patent: 4590884 (1986-05-01), Kreeger et al.
patent: 4935984 (1990-06-01), Bryant et al.

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