Weather louver

Claim 1

In a weather louver for separating liquid particles from a flowing air stream as it passes through said weather louver from the front to the rear thereof in a generally longitudinal direction along a zigzag flow path, said weather louver having: a housing; a plurality of vanes each including an inlet wall, a diagonal wall, a connecting wall, and an outlet wall, said vanes each having a similar cross sectional configuration and mounted in said housing in transverse spaced parallel relation to each other with said respective walls of immediately adjacent vanes defining therebetween a zigzag air stream passage extending in said longitudinal direction through said weather louver; said air stream passage including, in said longitudinal direction of flow of said air stream, an inlet portion defined by said spaced adjacent inlet walls, a diagonal portion defined by said spaced adjacent diagonal walls extending at a first transverse angle away from said longitudinal direction, a connecting portion defined by said spaced adjacent connecting walls extending at a second transverse angle back toward said longitudinal direction and an outlet portion defined by said spaced adjacent outlet walls; The improvement comprising; a first arcuate part projecting part way into one side of said air stream passage at the juncture of said diagonal and connecting walls of one of said vanes; a second arcuate part projecting part way into the other side of said air stream passage at the juncture of said diagonal and connecting walls of an immediately adjacent vane; said first and second arcuate parts defining therebetween a first venturi at the juncture of said diagonal and connecting walls for accelerating the velocity of said liquid particles; said second arcuate part having a deflector extending upstream into said diagonal portion of said air stream passage to define a second venturi upstream of said juncture of said diagonal and connecting walls for accelerating the velocity of said liquid particles; said deflector and diagonal wall defining an opening for entry of liquid into said second arcuate part; and said connecting wall having an impact surface downstream from said first and second venturi against which said liquid particles impinge for collection and removal.