Dual stage extraction blower for removing contaminants from an air stream
OwnerJames E. Petersen JR.inventor
Life of this patent
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Abstract
A two stage extracting blower that cleans liquid and solid contaminants from supply air, and provides high velocity air for cooling equipment, personnel and/or structures. In a first air cleaning stage, the blower uses air velocity and the centrifugal force of a rotating impeller to separate heavier contaminants entrained in a dirty air stream into a rear partitioned chamber of the blower housing. In a second air cleaning stage, the blower uses centrifugal forces imparted by the impeller on lighter contaminants to cause the contaminants to be collected in a skimmer provided in the partially cleansed air stream prior to release of the air stream from the blower.
Claims24
An extracting blower, comprising:
- a fan housing in which is defined a front chamber and a rear chamber with a interior wall disposed within said housing to separate said front chamber from said rear chamber;
- b. an first opening in said fan housing and a second opening in said interior wall;
- c. a rotatable impeller located within said fan housing, said impeller disposed to extend from said rear chamber to said front chamber through said second opening in said interior wall, said impeller including a back plate oriented within said rear chamber and a plurality of impeller blades extending through said second opening from said back plate;
- d. said housing including a tangential section extending therefrom, said tangential section forming a chute internally defined by a forward portion and a rear portion, wherein said forward portion is in fluid communication with said forward chamber and said rear portion is in fluid communication with said rear chamber;
- and
- e. a skimmer disposed within said forward portion of said chute, said skimmer comprising a contaminant deflection wall.
An extracting blower, comprising:
- a. a first stage air cleaning apparatus having a centrifugal impeller disposed to extend between a front clean air chamber and a rear contaminant chamber;
- and
- b. a second stage air cleaning apparatus having an air chute in fluid communication with said front clean air chamber and a skimmer disposed within said clean air chute, said skimmer comprising a contaminant deflection wall.
Dependencies are inferred from the claim text.